31results about How to "Small reaction space" patented technology

The invention relates a floating entrainment metallurgical process. In this process, the reaction gas and the powdery materials are injected into the reaction furnace, aiming to obtain a controllable highly rotating and floating state and reach the ignition point under the high-temperature radiation of the reaction furnace to combust intensely. Meanwhile, the rotating fluid injected in the reaction furnace will drive the furnace gas, and forms a relatively low-temperature circular backflow protection area around the rotating fluid. The reaction gas is tangentially fed into the rotating generator along numbers of rotary channels to form a controllable rotating airflow, in addition, a conical exit air controller that can be moved up and down is adopted to control the exit area of the rotating generator, thus controlling the velocity of the reaction gas into the reaction furnace; the powdery materials fall freely around the reaction gas and are involved in the high-speed rotating airflow, forming a rotating fluid, of which the powdery materials are highly dispersed into the reaction gas, moving downwards along the radial high-speed rotating axle. For the purpose of this invention, a steplessly adjusted reactor is as well referred to in this invention.

The invention discloses an application method of a loop slurry reactor adopting a novel filtration module. In the method, synthesis gas firstly enters a riser of the loop slurry reactor from the bottom of the reactor, and then is mixed with the slurry in the riser for reaction, wherein the interior of the riser is provided with the filtration module, and the upper end of an internal flow passage of the filtration module is of a reverse conical structure with a cone angle of 20 degrees to 70 degrees; the slurry flows upwardly along the riser, part of the slurry flows into the internal flow passage of the filtration module, and clear solution penetrates through the wall of a filter tube and serves as a product to be discharged out of the slurry reactor through a discharge hole; and the filtered and condensed slurry continuously flows upwardly and then enters a settlement zone with an enlarged pipe diameter at the top; and the slurry, most bubbles of which are removed in the settlement zone, enters a downcomer, and then is circulated to the riser through the downcomer so as to be subjected to reaction continuously. The method provided by the invention has the advantages of long working cycle of the filtration module and high liquid-solid separation efficiency; and simultaneously, the method provided by the invention is favorable for uniform distribution of the gas flow and liquidflow in the reaction zone of the riser, thus the utilization efficiency of the reactor is increased.

The invention relates to a process and a device for smelting copper by a pulsation vortex method. The process comprises the following steps of: mixing dry copper concentrate powder or matte powder with oxygen-enriched air, and putting the mixture in a reactor to form high-speed vortex taking an axis as a center; introducing pulsation oxygen into the center of the high-speed vortex, performing pulsation combustion to generate pulsation turbulent flow in the high-speed vortex so as to promote particles to collide with one another, then forming a pulsation vortex reaction area with a high-temperature field, a high oxygen field and a high particle field, and completing a reaction of manufacturing the matte and slag from the copper concentrate or manufacturing crude copper and slag from the matte; after the reaction, precipitating fused materials in a fusing pool at the bottom of the reactor, and then separating the matte and slag or the crude copper and slag; and sending SO2 gas fume to an acid preparation process. The process and the device have the advantages of: 1, high reaction efficiency, high oxygen utilization efficiency and low fume yield; 2, high capacity, low energy consumption, small reaction space, centralized heat energy reacted, low loss of a refractory material of a furnace body, no need of a huge metallurgical hearth and low investment cost; and 3, environmental protection and simple, convenient and reliable technological operation.

The invention discloses a same-direction rotary-floating smelting method. The method includes that powdery sulphide concentrate and oxygen-containing gas are sprayed into space of a high-temperature reaction tower through equipment; the oxygen-containing gas is divided into two parts before entering the equipment, and second oxygen-containing gas is sprayed into the reaction tower by means of annular rotational flow to form a bell-shaped rotating air curtain; first oxygen-containing gas is converted into rotary jet flow through the equipment and injected at the center of the rotating air curtain; in an annular space between two branches of the rotating air flow, the concentrate enters in a direction deflecting to the center, is drawn into by the oxygen-containing gas and sucks high-temperature smoke on the lower portion of the reaction tower to form two-phase rotating jet flow with gas and particle mixed; when being ignited by high temperature, the sulphide concentrate is in drastic burning reaction with oxygen and releases SO2-enriched smoke and forms mixed melt containing sulfonium (or metal) and slag, and sulfonium (or metal) and slag are separated at the bottom of the reaction tower to complete metallurgical process. The invention further provides metallurgical equipment and a same-direction rotary floating smelting nozzle thereof.

The invention relates to a chlorination reaction device adopting the following technical scheme: the chlorination reaction device is composed of an injection mixer, an inner draft tube and a chlorination reactor, wherein the injection mixer is connected with the chlorination reactor, and the inner draft tube is arranged in the chlorination reactor; the injection mixer is characterized in that a material cavity is composed of a chlorination inlet pipe, a flat cover, a cylinder body, a nozzle and a mixed gas inlet pipe, a short section is respectively connected with the cylinder body and a reducer section which is connected with an injecting pipe, and the injecting pipe passes through the chlorination reactor to extend into the inner draft tube; the inner draft tube comprises a tube body, areinforcing rib, a supporting plate, a lifting lug and a stop block; the inner draft tube is matched with the chlorination reactor by the supporting plate and the stop block; the chlorination reactoris characterized in that an end socket and the cylinder body form a device body, the lower end of the cylinder body is provided with a man hole, a connecting plate and the supporting plate are used for fixing and limiting the inner draft tube, and the cylinder body is provided with a temperature measuring port, a material outlet and a support. The invention has favourable energy saving and loss reduction and obvious environment protection effect, and the production scale of carbon tetrachloride can be controlled from around 40% at present to 2%.

The invention discloses an integrated ultrasonic external field-assisted microchannel reactor for supercritical hydrothermal synthesis of nanomaterials, comprising a main body formed by axial docking of a plurality of supercritical microchannel reaction modules; A plurality of micro-reaction channels are arranged along the axial direction, and the micro-reaction channels are connected at the top or bottom end of the main body to form a material flow channel in the form of upper and lower turns. Turn up and down in the circumferential direction. The reactor can determine the number of supercritical microchannel reaction modules according to the reaction time of different types of nanoparticles, and precisely control the reaction time; multiple reaction processes are integrated inside the reactor, and the micro-scale multi-process supercritical hydrothermal synthesis reaction and the ultrasonic generator are coordinated. Under the action, metal and metal oxide nano-powders with small particle size and uniform distribution can be synthesized in a green and efficient manner, and at the same time, particle agglomeration can be effectively prevented and problems such as clogging of reaction channels can be avoided.

The invention belongs to the technical field of chemical equipment, and in particular relates to a chlorine dioxide solution generator taking sodium chlorate as a reaction raw material. The chlorine dioxide solution generator comprises a retort, an acid liquor metering pump, a sodium chlorate solution metering pump, a heating water jacket, a safety valve, a water ejector, and a control panel, wherein an acid liquor distributor and a sodium chlorate solution distributor are arranged on the lower part in the retort in turn; the lower end of the retort is provided with a retort exhaust valve; the upper part and the lateral surface of the retort are provided with a chlorine dioxide gas outlet and a chlorine dioxide solution outlet respectively; and the heating water jacket is also provided with a heating water jacket feed liquor and discharge air valve, an air communication valve, a heating water level display, a heating water temperature monitoring controller, and the like. The chlorine dioxide solution generator has the advantages of compact and small structure, simple operation, safe and reliable running, and convenient maintenance and use.

The invention relates to an absorption and separation integrated sulfur-containing gas desulfurization swirl reaction device, which belongs to the field of swirl reactors for sulfur-containing gas desulfurization. It is characterized in that: the outlet end of the mixing chamber (3) is sequentially connected to the reaction mechanism and the separation mechanism according to the reaction sequence, the air inlet pipe is arranged tangentially on the upper part of the mixing chamber (3), and the first atomizing nozzle (2) Inserted on the intake pipe, a first-stage guide vane (4) is provided between the mixing chamber (3) and the reaction mechanism, and a second-stage guide vane (8) is provided between the reaction mechanism and the separation mechanism. The mixing chamber ( 3) Both the reaction mechanism and the separation mechanism include a cavity with a gradually changing inner diameter. The invention realizes the integration of the desulfurization reaction and separation of the sulfur-containing gas and the absorption liquid, utilizes the high turbulence of the swirl field to increase the gas-liquid contact area, accelerates the gas-liquid mass transfer rate, and rapidly absorbs the hydrogen sulfide in the sulfur-containing gas , which effectively improves the reaction efficiency and saves the reaction space.

The invention discloses a preparation device and preparation method of high-purity chlorine dioxide. The preparation device comprises a heating device, a reaction tank body, at least two oblique plates and at least one gas collection hood, wherein a sample inlet and a liquid outlet are respectively formed in two opposite sides of the reaction tank body, and the liquid outlet is positioned at the bottom of the reaction tank body; nanosilver-loaded alpha-Al2O3 strips are inserted on the oblique plates, each oblique plate is obliquely arranged between the sample inlet and the liquid outlet and is approximately perpendicular to the flowing direction of a reaction liquid, the bottom surface and two side surfaces of each oblique plate and the reaction tank body are arranged in a sealing manner, the reaction tank body is divided into a plurality of reaction chambers, the upper end of the oblique plate is inclined towards the liquid outlet, and a set distance is preserved between the adjacent oblique plates; the gas collection hood is arranged on the upper end or the side wall of the reaction tank body and is used for collecting a reaction product gas; and the heating device is arranged on the upstream of the reaction tank body and is used for heating a reaction liquid entering in the reaction tank body.

The invention discloses a reverse spin floating smelting method. Powdery sulfide concentrate and oxygen-containing gas are sprayed into a space of a high-temperature reaction tower through equipment. The oxygen-containing gas is divided into two parts before entering the equipment; the second oxygen-containing gas is sprayed into the reaction tower in an annular rotary flow mode to form a bell-shaped rotary air curtain; the first oxygen-containing gas is converted into rotary jet via the equipment and is injected from the center of the rotary air curtain. In the annular space between the two rotary gas flows, the concentrate enters in the direction deflecting to the center, and is drawn in by the oxygen-containing gas while high-temperature flue gas from the lower portion of the reaction tower is sucked to form two-phase rotary jet of gas-particle mixing. When the sulfide concentrate is lighted at high temperature, the sulfide concentrate generates severe combustion reaction with oxygen and releases flue gas rich in SO2, meanwhile, sulfonium (or metal) and slag containing mixed melt is formed, and finally the sulfonium (or metal) is separated from the slag at the bottom of the reaction tower so as to complete the metallurgy process. The invention further provides the metallurgical equipment and a reverse spin floating smelting nozzle thereof.

The invention discloses a porous ceramic, which comprises a silicon carbide porous ceramic substrate; a silicon carbide film is attached to the surface of a hole wall of the silicon carbide porous ceramic substrate; and nanometer nickel particles are embedded in the silicon carbide film. The invention also discloses a catalytic microreactor and a catalytic microreaction system comprising the porous ceramic, and a preparation method of the catalytic microreactor. The porous ceramic can reduce the reaction space and help realize the miniaturization of the reforming hydrogen production system, and the nano-nickel particles embedded in the silicon carbide film can improve the binding strength of the catalyst load, and help realize the vehicle-mounted on-line hydrogen production.

The invention belongs to the field of solid waste disposal and resource utilization, and in particular relates to a process for production of biogas by wet method-dry method combined two-stage anaerobic fermentation. Broken solid waste and an inoculum are mixed in a full wet type reactor for wet anaerobic fermentation, the wet anaerobic fermentation period hydraulic retention time (HRT) is 5-20 days, after fermentation processing, a fermentation material can be delivered to a dry method fermentation reactor with an infiltration device at the bottom for dry solid fermentation for production of the biogas, and the process combines the dual advantages of wet method fermentation and dry method fermentation. The fermentation process integrating the advantages of fast mass transfer and easy start-up characteristics of the wet method fermentation and reaction space saving of the dry method fermentation, and the like is disclosed. By combination of biomass multistage decomposition and transformation in the fermentation process and methane producing bacteria group enrichment principle, the wet fermentation process advantage is used, the wet fermentation process is used as a homogeneous inoculation stage of the dry method fermentation process, and the problems of difficult inoculation and slow start of the dry method fermentation can be solved.

The invention discloses a hydrogen production device. The hydrogen production apparatus includes, for example, a shell having an accommodating space therein, wherein the accommodating space comprises a liquid accommodating cavity and a hydrogen accommodating cavity, and a partition plate is arranged between the liquid accommodating cavity and the hydrogen accommodating cavity; and at least one hydrogen production catalyst which is arranged in the at least one hydrogen production pipe, wherein the at least one hydrogen production pipe is communicated with the liquid accommodating cavity and the hydrogen accommodating cavity. The hydrogen production device further comprises a heating cavity and / or an electric heater; and the heating cavity is arranged between the liquid accommodating cavity and the hydrogen accommodating cavity, and the electric heater is arranged in the liquid accommodating cavity and / or the hydrogen production pipe. The technical problems that hydrogen production efficiency is low, a hydrogen production device is complex in structure, and steam heat consumption is high can be effectively solved.