58results about How to "Increase internal air pressure" patented technology

A digital ring sizing device includes a cylinder removably positioned directly about the selected user finger, and a mechanism for determining a ring size of the selected user finger. The ring size determining mechanism is housed within an interior of the cylinder and connected directly thereto. A mechanism visually displays the determined ring size of the selected user finger, and is directly connected to an outer surface of the cylinder and further is electrically coupled to the ring size determining mechanism. The ring size of the user is automatically displayed in numeric characters by the visual displaying mechanism after the ring size determining mechanism calculates the ring size of the selected user finger.

The invention provides a rapid ventilation and smoke exhausting device for a construction period of a long-distance tunnel. The rapid ventilation and smoke exhausting device comprises a gantry bracket, a fixed wind door and a movable wind door, an axial flow ventilator and a jet flow draught fan, and a motor control system, wherein the fixed wind door is arranged at the upper end of the gantry bracket and the movable wind door is arranged on one side of the gantry bracket; the axial flow ventilator and the jet flow draught fan penetrate through the fixed wind door; the fixed wind door is matched with the unfolded movable wind door so that the axial wind flow in the tunnel is separated; a wind inlet of the axial flow ventilator and a wind outlet of the jet flow draught fan are formed in one side, which is close to a working surface, of the fixed wind door; the wind outlet of the axial flow ventilator is connected with a flexible wind barrel; the wind outlet of the flexible wind barrel extends to the outer part of the tunnel. According to a ventilation and smoke exhausting method provided by the invention, the wind doors for separating the axial wind flow are arranged in the tunnel; a safe space and a closed polluted space are formed on the two sides of the wind doors respectively, and pollutants in the polluted space can be discharged out of a hole along an airflow through a closed exhausting channel by using ventilation equipment; blasting equipment is used for blasting wind into the polluted space from the safe space so that the pollutants rapidly flows towards the inlet of the ventilation equipment.

The invention discloses an exhaust gas absorption device for aluminum alloy die casting product production, and concretely relates to the field of exhaust gas treatment. The device comprises a gas inlet tube, one end of the gas inlet tube is connected to the bottom of a water storage tank, a heat exchange tube is arranged at the end part, corresponding to the gas inlet tube, in the water storage tank, one end of the heat exchange tube is connected to the outer sidewall of the middle part of the water storage tank and is connected with a first gas delivery tube, one end of the first gas delivery tube is connected to the top of a spray tank, the front surface of the water storage tank is provided with a control switch, a water drawing tube is inserted into the water storage tank, one end ofthe water drawing tube is connected to the water inlet end of a first water pump, the water outlet end of the first water pump is connected with a first water outlet tube, and a second water pump is arranged at one side of the bottom of the water storage tank. The device improves the waste heat utilization effect of exhaust gas during use, and a part of the heated water is used for circulating spray treatment to improve the adhesion strength of harmful substances and particulate matters in the exhaust gas, so the purification effect on the exhaust gas is improved.

The invention discloses a paint stirring machine capable of regulating the viscosity. The paint stirring machine comprises a paint stirring device, a load bearing rod, a base, an anti-slip pad, a pollution collecting box, a pollution collecting pipe, an input module, a hinge, a box door, a lock and an operation box, wherein through the arrangement of a stirring chamber, a stirring blade, a thickening agent storage device, a thickening agent injection pipe, a water storage device and a water injection pipe, the paint viscosity can be regulated in the paint stirring process; different requirements on the paint viscosity in the production process can be met.

The invention relates to an external urethral catheterization device for a bedridden patient, belonging to the technical field of medical instruments. The external urethral catheterization device sequentially comprises: a pair of wearing trousers, which are provided with a ring sleeve that sleeves the penis of a patient; a middle fixing tube set, wherein a connecting-in end of the middle fixing tube set is in sealed butt joint with and communication with the ring sleeve, and sleeves the penis of the patient; a urine receiving pot, which allows the glans penis of the patient to extend into and is used for receiving urine, wherein a urine outlet is formed in the lower side of the urine receiving pot, and the urine receiving pot is in sealed butt joint with and communication with a connecting-out end of the middle fixing pipe set; a urine receiving pipe, wherein a funnel is arranged to be a liquid inlet end of the urine receiving pipe, and a plug is arranged to be a liquid outlet end of the urine receiving pipe;" a collecting frame, wherein a plurality of collecting bottles which can selectively communicate with the plug of the urine receiving pipe and are used for collecting urine are arranged on the collecting frame. The external urethral catheterization device can well assist a male patient in urethral catheterization.

The invention discloses an anesthesia waste gas purification and recovery device in an operating room. The device comprises a base, a first recovery mechanism, a second recovery mechanism, a sterilization mechanism and an impurity removal mechanism; wherein a purification box is arranged on the upper surface of the base, a control switch group is arranged on the upper surface of the purification box, a first recovery mechanism is arranged on the right side of the purification box, the first recovery mechanism is connected with a second recovery mechanism through a three-way joint, and an impurity removal mechanism and a sterilization mechanism are sequentially arranged in the purification box from top to bottom; a collecting mechanism is arranged on an air outlet of the purifying box, anda placing mechanism is arranged on the left side of the purifying box below the collecting mechanism; according to the anesthesia waste gas purification and recovery device in the operating room, anesthetic gas can be evenly distributed, bubbles formed by the anesthetic gas are divided, impurities are removed more thoroughly, the gas can flow irregularly in an ultraviolet sterilization space, andthe sterilization effect of the anesthetic gas is improved.

The invention relates to a horizontal axis wind generating set with a de-icing device. The horizontal axis wind generating set with the de-icing device comprises a wind generating component, a de-icing external support component, a rainwater treatment chamber, a steam treatment component and a hot air component. Through specifically arranging the various components, after the surface of a wind turbine blade is found to be frozen, namely, after a cabin position is fixed through a cabin card component, a heat-insulating component is raised and a wind power blade is blown by the hot air, so the effect of removing the ice on the blade surface effectively is realized.

The invention discloses a self-protection bird repeller based on wind power supply. The self-protection bird repeller comprises a mounting base, a downwind mechanism is rotatably connected to the end,away from a bottom shaft rod, of an adapter ball head, a protection cylinder is fixedly connected to the end, away from the adapter ball head, of the downwind mechanism, and a gas sound production mechanism is fixedly connected to the bottom of an inner cavity of the protection cylinder; a micro-sound-wave resonance mechanism is arranged at the position, located above the gas sound production mechanism, of the inner cavity of the protection cylinder, a capacitor energy supply electromagnet is fixedly connected to the position, located above the micro-sound-wave resonance mechanism, of the inner cavity of the protection cylinder, and a wind energy mechanism is fixedly connected to the middle of the top of the protection cylinder; and a ventilation hole is formed in the position, located atthe outer side of the wind energy mechanism, of the top of the protection cylinder. The self-protection bird repeller relates to the technical field of bird repelling. The bottom downwind mechanism is used for adjustment, so that the whole equipment is parallel to the wind direction, and the equipment is protected; and when wind power is overloaded, the downwind mechanism is folded, and the wholeequipment inclines towards the ground and lies flat, so that the overall size is reduced, and the equipment is protected.

A device capable of supplying an internal combustion engine with fuel while improving the utilization rate of vaporized fuel. A temporary transition from a third state (primary recovery path FL1: closed, secondary recovery path FL2: closed, second vaporized fuel path VL2: closed, condenser 30: decompressed) to a fourth state (primary recovery path FL1: closed, secondary recovery path FL2: closed, second vaporized fuel path VL2: open, condenser 30: decompressed) is achieved. This temporarily increases an internal air pressure P of a condenser 30, and the kinetic energy of a vaporized fuel V leaked out of a first fuel tank 40 through the second vaporized fuel path VL2 is able to sweep away a first fuel F1 in a liquid state accumulated in a vacuum pump 36 to the first fuel tank 40.

The invention discloses an overhaul climbing ladder for hydraulic engineering, and relates to the technical field of hydraulic engineering. The overhaul climbing ladder comprises two side fixed rods, a climbing rod is fixedly connected between the two side fixed rods, a bottom block is arranged in the climbing rod, the upper end face of the bottom block is arranged in a protruding mode, a treading block is arranged above the bottom block, and air compression structures are symmetrically arranged at the lower end of the treading block. Through the arrangement of a treading block, the air compression structures and a dirt cleaning structure, when a maintenance worker climbs, the treading block is treaded to extrude the air compression structures, so that the air compression structures deform, air in the air compression structures is extruded, the internal air pressure of the air compression structures is increased, the air flows, therefore, gas is sprayed out of the dirt cleaning structure, muddy water on a shoe sole is washed, the shoe sole is kept dry so the friction force is increased, and the overhaul climbing ladder has high safety.

The invention discloses an intelligent natural wind device, and relates to the technical field of fans. The intelligent natural wind device comprises a fan device and an exhaust device; the fan device includes an axial flow fan at the upper part; an exhaust port of the axial flow fan is tightly connected with a wind guide pipe; the lower end of the wind guide pipe communicates with a semispherical exhaust shell; mounting holes are uniformly distributed in an arc surface of the exhaust shell; exhaust devices are respectively mounted in all the mounting holes; the exhaust devices include guide pipes inserted with the mounting holes; electromagnetic valves are arranged in the guide pipes; control circuits of the electromagnetic valves and the axial flow fan are arranged in the exhaust shell; infrared scanners are respectively arranged at the upper part of the outer periphery of the wind guide pipe and the bottom of the exhaust shell; and output ends of the infrared scanners are connected with the control circuits. The intelligent natural wind device has the beneficial effects of simulation of natural wind blowing, intelligent control of the blowing direction, multi-angle synchronous working and improvement of the use experience.

The invention discloses a novel method for pyrolysing biomass and preparing high-quality fuel gas by the aid of liquid steel slag. Process are controlled, accordingly, the liquid steel slag can be effectively cooled, heat energy of the liquid steel slag can be effectively utilized, and the biomass can be converted into the high-quality energy gas. The technical scheme includes that the method comprises heating the liquid steel slag and gasifying the biomass and cooling water; enabling pyrolysis gas of the biomass and steam to carry out catalytic reaction under catalytic actions of the steel slag; gradually generating the energy gas from tar; enabling alkaline substances in the steel slag to absorb Cl and CO2 in the energy gas. The energy gas mainly comprises CO and H2. The novel method has the advantages that energy can be saved to a great extent while the steel slag is cooled, and the high-quality energy gas can be obtained.

The invention discloses an immersed rotating filling bed reactor and application. The immersed rotating filling bed reactor is characterized in that a rotor filler is immersed in materials in the reactor, the materials in the reactor form circulation under the driving of rotation of a rotor, the materials are fully sheared and dispersed into fluid infinitesimal elements when passing through the filler, the mass transfer rate and the reaction rate are enhanced, a feeding assembly enables different-phase materials to be led to the inner edge of the rotor at the same time, a blocking ring and a baffle play a vortex breaking role, and a heat exchange assembly can keep the system within a proper temperature range. According to the invention, the immersed rotating filling bed reactor is suitable for gas-liquid, liquid-liquid and other heterogeneous systems, and compared with a traditional rotating filling bed, the material contact time is long, and the reaction is more sufficient.

The invention discloses a grass carp static farming food provisioning apparatus with a function of enlarging food provisioning areas by means of pressurization. The grass carp static farming food provisioning apparatus structurally comprises a food provisioning head, a food provisioning pipe, three wheels, a lifter, a bracket, a food storage tank and a controller. The food provisioning head is fixedly mounted at the front end of the food provisioning pipe, the food provisioning head and the food provisioning pipe are of integral structures, the tail end of the food provisioning pipe is weldedwith the lifter, the three wheels are arranged on the front side and the rear side of the bracket and are movably connected with the front side and the rear side of the bracket, and the lifter is mounted at the lower end of the left side surface of the food storage tank in an embedded manner. The grass carp static farming food provisioning apparatus has the advantages that quantitative structuresare arranged inside the grass carp static farming food provisioning apparatus, feed can stop being added when a certain quantity of feed is added, food can be quantitatively provisioned, the food provisioning speed can be reduced to a certain extent, and accordingly the feed can be saved; the grass carp static farming food provisioning apparatus is provided with a pressurization apparatus, barriers can be matched with a balance plate via a stay in up-down movement procedures, accordingly, the air pressure can be increased by the pressurization apparatus, a pressurization rod can be driven by the pressurization apparatus to be matched with a pressurization plate, the feed can be scattered and discharged via main outlets and an outer-ring encircling opening, the food provisioning areas can be enlarged, each piece of grass carp can be fed, the feed cost can be reduced, and healthy growth of the grass carp can be guaranteed.

The invention relates to a method for synchronously processing liquid steel slags, chromium slags and sludge. The steel slags are heated, the sludge is gasified, and then catalysts such as dangerous waste chromium slags are used for high-temperature catalyzing of the sludge; under the condition of steam gasification, the sludge is relatively and thoroughly converted into low-molecular high-temperature energy gas, so that the condition that the surfaces of the chromium slags are coked is avoided. Besides, the high-temperature energy gas is used for heating the chromium slags, so that hexavalent chrome in the chromium slags is reduced to obtain trivalent chromium, and the energy gas can also be cooled; CO2 and Cl in the energy gas are absorbed by alkaline substances in the chromium slags. The technology can detoxify the chromium slags and cool the steel slags, energy can also be greatly saved, and besides, high-grade energy gas is obtained.

The invention relates to the field of coating devices, in particular to a coating brush facilitating control over the coating thickness. The coating brush comprises a fixing rod, an extension structure, a coating structure, a cleaning structure, an injection structure, a fixing structure, a pressure relief structure and a regulating structure; the feeding structure is driven to work by the coatingstructure synchronously while the coating structure works for coating; through cooperative application of the coating structure and the injection structure, the coating injection work can be made forthe coating structure automatically while the coating is performed, and manual repeated dipping of coatings or additional coating work is not required; not only can manpower be saved, but also the coating efficiency can be improved greatly, namely that when the coating structure does not work, the coatings are not injected into the coating structure; thus, the function of avoiding coating waste can be achieved, and through arrangement of the cleaning structure, particle impurities sticking to the coating structure can be cleaned in time; and the coating quality is ensured.

A device capable of supplying an internal combustion engine with fuel while improving the utilization rate of vaporized fuel. A temporary transition from a third state (primary recovery path FL1: closed, secondary recovery path FL2: closed, second vaporized fuel path VL2: closed, condenser 30: decompressed) to a fourth state (primary recovery path FL1: closed, secondary recovery path FL2: closed, second vaporized fuel path VL2: open, condenser 30: decompressed) is achieved. This temporarily increases an internal air pressure P of a condenser 30, and the kinetic energy of a vaporized fuel V leaked out of a first fuel tank 40 through the second vaporized fuel path VL2 is able to sweep away a first fuel F1 in a liquid state accumulated in a vacuum pump 36 to the first fuel tank 40.

The invention relates to the field of pesticide spraying devices, in particular to a pesticide spraying device with controllable dosage. The pesticide spraying device with controllable dosage includesa box body, a sealing structure, a pressing structure, a dosage regulating structure, an inflation structure and a pressure releasing structure, wherein external air can be filled into the box body through the pressing structure in a pressing mode, so that the air pressure inside the box body is increased, and pesticide inside the box body is sprayed in a form of mist; through combination with the dosage regulating structure, the dosage of the to-be-sprayed pesticide is controlled precisely, excessively sprayed crops in an area are avoided, and damage to the crops is avoided; through arrangement of the inflation structure, the external air can be squeezed into a secondary box under the action of the wind force in the case of large wind, so that the air pressure inside the secondary tank is increased; and the pesticide inside the secondary tank can be sprayed out without manpower, so that the labor force is saved.

The invention relates to a method of synchronously treating liquid steel slag, chromium slag and biomasses. According to the method, by heating the steel slag, gasifying the biomasses and utilizing chromium slag as hazardous wastes and other catalysts to catalyze and crack biomasses at high temperature, the biomasses are more completely converted to low-molecule high-temperature energy gas under the condition of gasifying water vapor, so that coking on the surface of the chromium slag is prevented; and meanwhile, by heating the chromium slag with utilization of the high-temperature energy gas and reducing hexavalent chromium in the chromium slag into trivalent chromium, the energy gas is cooled as well, and CO2 and Cl in the energy gas are absorbed by alkaline substances in the chromium slag. According to the process, when the chromium slag is treated to be harmless, and the steel slag is cooled, the energy is greatly saved, and the high-grade energy gas is also obtained.

The invention belongs to the technical field of thesium chinense planting equipment, and discloses a sowing device for thesium chinense planting, the sowing device comprises a storage box, the bottom surface of the storage box is fixedly connected with a fixed box, the fixed box is internally provided with an air pump, and the side surface of the storage box is fixedly communicated with a fixed curved pipe. The gas introduction direction is changed by operating the adjusting mechanism, so that the introduced gas pushes the push plate to rotate, rotation adjustment of the seeding cylinder is realized, the position of the seeding pipe on the seeding cylinder is changed, and the first pipe and the second pipe which are communicated with the two ends of the seeding bin respectively are movably connected with the seeding cylinder in a sleeving manner; torsion springs are additionally arranged on the outer surfaces of the first pipe and the second pipe, so that the outer side seeding pipe reaches a limiting position when rotating to the lower part under the pushing of gas, the position switching of different seeding pipes is quickly and conveniently realized, the seeding pipes with different intervals are replaced, different seeding requirements are met, different row spacing seeding is realized, the application range is wide, the adjustment is convenient, and the practicability is high. The use effect is good.

The invention discloses an energy-saving and environment-friendly factory waste gas treatment device, relates to the technical field of waste gas treatment, and solves the problem that the treatment degree of waste gas cannot be ensured because garbage in the waste gas is removed mainly through activated carbon adsorption and filtration in the existing waste gas treatment. The energy-saving and environment-friendly factory waste gas treatment device comprises a bin body, wherein the bin body is of a turning structure, and the top of the front side of the bin body turns towards the front side; the bin body further comprises a steam bin, a gas conveying pipe and a gas inlet pipe, the steam bin is integrally arranged on the rear side of the bin body, the top of the steam bin is of a funnel structure and is connected with the gas conveying pipe, and the gas conveying pipe is communicated with one side of the bottom of the gas bin. By arranging a gas guide water channel and a heater, a uniform and efficient waste gas treatment function is provided for the device, water in the gas guide water channel can be quickly evaporated to generate water vapor through the heater, the water vapor is mixed with the waste gas, the waste gas is sterilized and disinfected, and the waste gas is further subjected to stable treatment.

The invention provides a method for synchronously processing liquid steel slag, chromium slag and biomass. The method comprises the steps that biomass is heated and gasified by the steel slag; then catalysts such as hazardous wastes and chromium slag are used for catalyzing and pyrolyzing the biomass at a high temperature; the biomass is converted to be high-temperature low-molecule energy gas thoroughly under the gasifying condition of water vapor, and coking of the surface of the chromium slag is avoided; meanwhile, the high-temperature energy gas is used for heating the chromium slag to enable hexavalent chromium in the chromium slag to be reduced to trivalent chromium; the energy gas is cooled by the way; and CO2 and Cl in the energy gas are absorbed by alkaline substances in the chromium slag. According to the technology, while the chromium slag is made harmless and the steel slag is cooled, energy is greatly saved, and meanwhile high-grade energy gas is obtained.

The invention relates to the technical field of highway construction, and particularly to a roadbed maintenance device for highway construction. The roadbed maintenance device for highway constructioncomprises a base, the hot melting kettle comprises a bottom plate, a hot melting kettle body, a construction mechanism, a pressurizing mechanism, a stirring mechanism and a power supply mechanism, the bottom plate is a square bottom plate and is horizontally arranged, the hot melting kettle body is fixedly installed on one side of the upper portion of the bottom plate through a bottom supportingmechanism, and the construction mechanism communicates with the bottom of the hot melting kettle body. The mounting structure is stable, gravity center more stable, the crack pouring glue in the kettle body can be used more thoroughly without obliquely jacking up the kettle body; the device is simple in structure and convenient to use, waste is avoided, an external high-pressure air source is notneeded, convenience is brought to constructors, meanwhile, the manufacturing and machining cost of the device can be effectively reduced, more importantly, the accident of rollover caused by unstablegravity center of the whole device due to inclined jacking of the kettle body can be avoided, and the influence on the heating efficiency can be avoided.

The invention relates to easy-folding rods for airport air navigation aid equipment, and aims to provide an inflatable easy-folding rod. The inflatable easy-folding rod comprises an inflatable film tubular column, and multilayer airtight chambers with airtight separation between upper parts and lower parts and connected together are formed in the inflatable film tubular column; an inflatable filmtubular beam used for arranging air navigation aid equipment is connected to the top of the inflatable film tubular column, and the bottom of the inflatable film tubular beam is connected with an installation base; each layer of airtight chambers are provided with inflatable and deflatable pipelines, electromagnetic valves and pressure sensors; each layer of airtight chambers are provided with intelligent monitoring and pressurized equipment for inflating and deflating the airtight chambers through the inflatable and deflatable pipelines; and the inflatable film tubular column and the inflatable film tubular beam are made of flexible and high-strength film materials. The easy-folding rod with an inflatable structure is made of the film materials, when an airplane impacts, rapid pressure relief can be controlled automatically, pressure relief can further be broken, easy folding under a special working condition is ensured, the damage to the airplane is avoided, meanwhile, enough structural strength is further achieved in common use, the effect of supporting the air navigation aid equipment is achieved, and wind resistance and seismic resistance are achieved.

The invention discloses a universal environment-friendly water treatment material processing device and a preparation method thereof. The universal environment-friendly water treatment material processing device comprises a grinding box, a first mixing box and a second mixing box, wherein a feeding hole is formed in the upper end of the grinding box; a pull ring is arranged at the left upper end of the feeding hole; a second rotating shaft is arranged at a central position inside the grinding box; a plurality of grinding blades are uniformly arranged on the second rotating shaft; an arc screen is arranged at the lower end of the second rotating shaft; the first mixing box is arranged just under the grinding box; a third rotating shaft is vertically arranged at a central position on the right side of a first motor; ultrasonic generators are arranged on left and right sides inside the first mixing box; a transporting pipe is arranged on the right side of a lift pump; the right side of the transporting pipe is fixedly connected to the left upper part of the second mixing box; and an addition port is formed in the left upper end of the second mixing box. According to the device disclosed by the invention, the pull ring is held by a user to open the feeding hole by virtue of the first rotating shaft, and materials are put into the grinding box; and the second rotating shaft drives the grinding blades to grind the raw materials inside the grinding box.

The invention discloses a rail-type automatic evaporator leak detector, which is used to detect whether an evaporator has an air leakage problem after the evaporator is machined and formed. The rail-type automatic evaporator leak detector comprises a top rail, a bottom rail, a traction line, a traction arm, a rail car, a gas booster pump, a leak detection pool, a connection pipe and a plug. When the rail-type automatic evaporator leak detector is used, the connection pipe sleeves one end of an evaporator pipeline, the other end or ends is plugged with the plug, the whole evaporator is placed on the rail car, the whole car is towed into the leak detection pool, then the pressure in the pipeline is increased through the gas booster pump so as to make the internal pressure greater than 2.8 Mpa, and the whole car stays in the pool for 30 minutes. If no bubbles emerge, then the evaporator is qualified, otherwise unqualified. The applied air pressure is slightly higher than the pressure in the pipeline during actual use, so that the use safety can be ensured and the phenomenon of liquid leakage is eliminated.

The invention discloses a purification device which comprises a high-pressure sealed water tank and a filtering pressurizer, the high-pressure sealed water tank is used for loading water to dissolve residual ozone in ozone mixed gas so as to form high-oxygen-content gas and high-concentration ozone water, and the high-pressure sealed water tank is communicated with a first gas inlet pipe so that the ozone mixed gas can enter the high-pressure sealed water tank; the filtering pressurizer is used for filtering the high-oxygen-content gas and gathering a part of the high-oxygen-content gas in thehigh-pressure sealedwater tank, so that the internal air pressure of the high-pressure sealedwater tank is increased, and the high-pressure sealed water tank is communicated with a first gas outlet pipe, so that filtered high-oxygen-content gas is discharged; a gas outlet of the high-pressure sealedwater tank is communicated with a gas inlet of the filtering pressurizer, so that high-oxygen-content gas is introduced into the filtering pressurizer from the high-pressure sealedwater tank. The purification device can be used for removing residual ozone in ozone mixed gas and producing high-oxygen-content gas and high-concentration ozone water at the same time. The invention further discloses a purification method.

The present invention is a method for synchronously treating liquid blast furnace slag, chromium slag and biomass. The blast furnace slag is used to heat and gasify the biomass, and then the hazardous waste chromium slag and other catalysts are used to catalyze the cracking of the biomass at high temperature. Thoroughly convert biomass into low-molecular high-temperature energy gas, avoiding coking on the surface of chromium slag. At the same time, the high-temperature energy gas is used to heat the chromium slag, and the hexavalent chromium in the chromium slag is reduced to trivalent chromium at the same time, and the energy gas is cooled by the way, and the CO2 and Cl in the energy gas are absorbed by the alkaline substances in the chromium slag. This process greatly saves energy while detoxifying chromium slag and cooling blast furnace slag, and obtains high-grade energy gas at the same time.