43results about How to "Improve waste heat utilization effect" patented technology

The invention provides a power station boiler residual heat utilization system capable of achieving intelligent control for fan frequency. The system comprises a boiler, a main flue, a bypass flue, a heat exchanger, a flue temperature sensor and a central controller, wherein smoke generated by the boiler enters into the heat exchanger through an inlet of the bypass flue; smoke subjected to heat exchange flows into the main flue via the outlet of the bypass flue and then is discharged; a main flue fan is arranged on the main flue; a bypass flue fan is arranged on the bypass flue; the flue temperature sensor measures the temperature of discharged smoke; the central controller is in data connection with the temperature sensor, the main flue fan and the bypass flue fan; the central controller automatically adjusts the frequency of the main flue fan and the bypass flue fan according to the exhaust gas temperature measured by the temperature sensor. According to the power station boiler residual heat utilization system, the exhaust gas temperature of smoke is automatically controlled through intelligently controlling fan frequency to adjust flow of smoke participating in residual heat utilization and heat exchange, so that low-temperature corrosion is avoided, and intelligentized adjustment of the system is realized.

The invention provides a low-temperature corrosion resistant heating method adopting boiler residual heat. The method comprises the following steps: step I, firstly, measuring the exhaust gas temperature, and automatically adjusting the opening of a valve or the frequency of a draught fan according to the exhaust gas temperature; step II, measuring the inlet temperature of a radiator, and determining whether auxiliary heating equipment needs starting or not according to the measured temperature. According to the low-temperature corrosion resistant heating method, the inlet temperature of the radiator is automatically measured through a temperature sensor positioned at the inlet of the heating radiator, so as to meet the heat dissipation demand; the exhaust gas temperature is automatically controlled through controlling flow of exhaust gas participating in residual heat utilization and heat exchange, so that low-temperature corrosion is avoided, and intelligentized adjustment of a system is realized.

The invention provides a heat accumulating type heat exchanger for waste-heat utilization during a cement production process. The heat exchanger comprises a first pipe bundle, a second pipe bundle, a high temperature flue gas inlet, a high temperature flue gas outlet, a low temperature working medium inlet, a low temperature working medium outlet and a housing, wherein the first pipe bundle and the second pipe bundle are arranged in the housing; the first pipe bundle is used for communicating flue gas generated during the cement production process; the second pipe bundle is used for being communicated with the low temperature medium; the first pipe bundle and the second pipe bundle are arranged in cross-connection; the flue gas enters from the high-temperature flue gas inlet, passes the first pipe bundle, and is discharged from the high temperature flue gas outlet; the low temperature medium enters from the low temperature medium inlet, passes the second pipe bundle, and is discharged from the low temperature medium; heat accumulating materials are placed in the space out of the first pipe bundle and the second pipe bundle. The heat accumulating type heat exchanger fully utilizes the waste heat during the cement production, and enables the heat exchange efficiency to the maximum, so as to save energy and achieve the goal of environmental protection and energy conservation.

The invention provides a utility boiler heat supply system with auxiliary heating equipment. The utility boiler heat supply system includes a boiler, a main flue, a bypass flue and a heat exchanger, wherein flue gas generated by the boiler enters the heat exchanger through the inlet of the bypass flue; flue gas subjected to heat exchange flows to the main flue through the outlet of the bypass flue and is then discharged; the heat exchanger is connected with a radiator, being a heat supply radiator; heat is transmitted to water of the radiator through flue gas in the heat exchanger, so that waste heat is utilized for heat supply; the auxiliary heating equipment is arranged on an inlet pipeline of the radiator, and is used for heating water entering the radiator. The automatic heating equipment provided by the invention can be used for automatically adjusting the heating power according to the utilization condition of waste heat, so that the heat supply effect is guaranteed, energy is saved, and intelligent adjustment of the system is realized.

The invention discloses a tail flue built-in loop-shaped circulating fluidized bed boiler and a driving power generation system thereof. The boiler comprises a loop-shaped hearth, a tail flue arrangedin a boiler loop-shaped inner cavity and separators symmetrically arranged with respect to the center of the hearth, wherein cold walls are uniformly distributed on an inner ring and an outer ring ofthe loop-shaped hearth, and are divided into a first region cold wall and a second region cold wall according to functional characteristics, and a flue gas mixing chamber, a low-temperature reheater,a primary air preheater, a flue gas cooler and a secondary air preheater are sequentially arranged in the tail flue in the flue gas flow direction. The boiler has the beneficial effects that the structure of the existing boiler is compact and integrated, the boiler island occupied space is reduced about one third, meanwhile, the separators which are symmetrically arranged in the center and the flue gas mixing chamber enable flue gas to be symmetrically collected, so that the uniformity of the load of the separators are effectively increased, according to the gas-solid flow state and the heatdistribution in the hearth, the side wall area and the four-corner area in the hearth the width and the deep direction are divided into heating areas with different functions, energy loss is reduced,and flexible adjustment is realized.

The invention relates to a waste heat boiler system, a rotary hearth furnace high-temperature dust-laden smoke treatment system which is provided with the waste heat boiler system and a method for rotary hearth furnace smoke treatment applying the rotary hearth furnace high-temperature dust-laden smoke treatment system. According to the invention, an external smoke inlet is arranged on a sedimentation furnace of the waste heat boiler system, so that external high-temperature smoke is introduced in for diluting to-be-treated smoke; the dust concentration and harmful content concentration in the smoke are lowered; dust is prevented from being accumulated on the sedimentation furnace, a high-temperature heat exchange part and a low-temperature heat exchange part; the probability that smoke treatment equipment and a flue are blocked is lowered; meanwhile, corrosion of the smoke to the sedimentation furnace, the high-temperature heat exchange part, the low-temperature heat exchange part, the flue and the like is alleviated; stable operation of the waste heat boiler system and the rotary hearth furnace high-temperature dust-laden smoke treatment system is ensured; and the service life of the equipment is prolonged. Meanwhile, qualities of the smoke such as temperature can be ensured by the external high-temperature smoke, and the smoke waste heat utilization efficiency is ensured.

The invention discloses a differential motion airtight feeding electric furnace smelting device and a feeding method thereof. The device comprises an electric furnace and a charging device, wherein the charging device comprises a cold receiving conveying trough and a heat conveying trough; the lower sides of the cold receiving conveying trough and the heat conveying trough are provided with an independently-controlled excitation device respectively; the outlet of the cold receiving conveying trough is provided with a conveying throat opening which is extended into the heat conveying trough; and the distance between the conveying throat opening and the bottom of the heat conveying trough is greater than or equal to the depth of the heat conveying trough. By the feeding method, shock excitation at different frequencies is applied to the two conveying troughs to realize the differential motion conveying of raw materials, so that a thicker material layer can be laid on the cold receiving conveying trough, and the material loading speed is increased; simultaneously, a shorter cold receiving conveying trough and a shorter material-conveying bottom elongated slot can be designed, so thatthe device and the method make project implementation convenient. In addition, due to the adoption of the throat opening and a sealed door structure, the possibility of material blocking and the air leakage rate are greatly reduced, and the device has low heat loss and a good dedusting effect, and is high-efficient, energy-saving and environment-friendly during smelting.

The invention discloses a methanol-high-pressure oxygen composite two-stroke engine, which is composed of one or more than one cylinder group, each cylinder group includes a main cylinder and a corresponding auxiliary cylinder, the main cylinder is provided with a starting fuel nozzle, The methanol nozzle, the oxygen nozzle and the exhaust valve of the main cylinder do not have an intake valve. There is a connecting channel between the exhaust port of the main cylinder and the auxiliary cylinder. The connecting channel has a one-way valve at the entrance of the auxiliary cylinder. The one-way valve can only The gas in the main cylinder flows into the auxiliary cylinder. The auxiliary cylinder does not have a fuel nozzle, but is equipped with an inlet valve of the auxiliary cylinder and an exhaust valve of the auxiliary cylinder. Control the amount of oxygen injected by the main cylinder, control the degree of fuel combustion, introduce the high-temperature active gas that has not been completely burned in the main cylinder into the auxiliary cylinder to continue burning, realize the cycle of separate cylinders, reduce the emission of harmful gases, and realize the full combustion of fuel.

The invention provides a heat accumulation type heat exchanger for utilizing waste heat in the cement production process. The heat exchanger comprises heat accumulation material, first holes and second holes are formed in the heat accumulation material and are of multi-row structures, a row of second holes are arranged between every two rows of first holes, a row of first holes are arranged between every two rows of second holes, the first holes and the second holes are arranged to form an angle of 90 degrees, the distance between the centers of circles of every two adjacent holes in the same row of first holes is L2, and L2 and the diameter D1 of the first holes meet the relation that 1.5<L2 / D1<2.7. According to the solid material heat accumulation type heat exchanger, waste heat in the cement production process is fully utilized so that the heat exchange efficiency of the heat exchanger can be maximized, and thus energy is saved, and the purposes of environmental protection and energy conservation can be achieved.

The invention provides a boiler heat supply system. The system comprises a boiler, a main flue, a bypass flue and a heat exchanger. Smoke generated by the boiler enters the heat exchanger through an inlet of the bypass flue. The smoke subjected to heat exchange flows into the main flue to be exhausted after passing an outlet of the bypass flue. The heat exchanger is connected with a radiator which is a heating radiator. The smoke in the heat exchanger transmits heat to water of the radiator, and waste heat can be utilized for heat supply. According to the novel boiler waste heat supply system, utilization of the waste heat of smoke of the boiler is guaranteed, and energy is saved.

The embodiment of the present invention discloses a household tableware disinfection cabinet, specifically related to the field of household electrical appliances, including a disinfection cabinet body, a first fixing frame is installed on the top inner wall of the disinfection cabinet body, and the bottom of the first fixing frame is along the horizontal Several clamping mechanisms are equidistantly installed in the direction. The clamping mechanism is composed of a fixed block, a protective cover, a push plate, a cotton cloth layer and a first spring. The fixed block is fixedly connected to the bottom of the first fixed frame, and the fixed The outer wall of the bottom of the block is connected with a protective cover, one end of the protective cover is connected with a push plate, the outer wall of the push plate is provided with a cotton cloth layer, and the inner wall of the push plate is located inside the protective cover and connected with a first spring. The invention can conveniently place and limit the position of the dinner plate, avoid the slipping of the dinner plate caused by the inclination of the disinfection cabinet during the movement process, and improve the effect of waste heat utilization. Bacterial growth and mildew caused by time storage will affect the health of users.

The invention relates to the technical field of biomass boilers, in particular to a small biomass heat supply system for transforming a traditional cooking bench. The small biomass heat supply systemcomprises a cooking bench, a solar thermal collector, a heat radiator and domestic water equipment, wherein the cooking bench comprises a water tank, a hearth and a chimney, a water tank is arranged on the outer wall of the hearth, a partition plate is arranged in the water tank and divides the water tank into an inner water tank and an outer water tank, a water flow channel is formed in the wallsurface of the chimney, water in the water flow channel exchanges heat with smoke in the chimney, an water inlet of the solar thermal collector is connected with the municipal water supply, a water outlet of the solar thermal collector communicates with a water inlet of the inner water tank, and a water outlet of the inner water tank communicates with a water inlet of the heat radiator; and a water inlet of the water flow channel is connected with the municipal water supply, a water outlet of the water flow channel communicates with a water inlet of the outer water tank, a water outlet of theouter water tank communicates with a water inlet end of the domestic water equipment. The inner water tank and the outer water tank are arranged on the outer wall of the hearth, so that hot water canbe provided for heating and hot water for life can be provided as well.