213results about "Pressurized chemical process" patented technology

The present invention relates to reactors and reactor components which have good resistance to NH3 and N2 and possibly to H2O at high temperatures and moderate pressures and thus can be used in industrial-scale reactions for the catalytic decomposition of NH3 into N2 and H2.

This disclosure relates to a polymer composition comprising at least 95% by weight of post-consumer recycled polypropylene resin based on the total weight of the polymer composition, preferably a melt-processed polymer composition, wherein the ethylene content (C2(CF)) of the crystalline fraction (CF) is in the range of [C2-3.4] to [C2-0.2] by weight, preferably [C2-3.0] to [C2-0.6] by weight, more preferably [C2-2.4] to [C2-1.2] by weight, based on the total weight of the crystalline fraction of the polymer composition as measured by the Crystex analysis described herein; and the total light transmittance measured according to ASTM D1003-13 for a 60 × 60 × 1 mm compression-molded plaque is in the range of 60 to 100%, preferably 65 to 90%, more preferably 70 to 85%. This disclosure further relates to the use of the polymer composition in the manufacture of articles and each article.

The utility model provides a vacuum collecting device for polytetrahydrofuran production, and relates to the technical field of polytetrahydrofuran production devices. The vacuum collection device for polytetrahydrofuran production comprises an alcoholysis system, a first neutralization system and a second neutralization system which are connected with a discharge tank, a first vacuum assembly is arranged between the alcoholysis system and the discharge tank, and a second vacuum assembly is arranged between the first neutralization system and the discharge tank. A vacuum assembly III is arranged between the neutralization system II and the discharge tank, and the discharge tank is also connected with a nitrogen pipeline. The device can realize continuous discharge of materials without intermittent discharge, reduces workload, saves time and labor, does not affect vacuum of each system, and ensures normal work of each system.

The invention discloses a reaction system for producing hydrogen through coal supercritical water gasification. The reaction system comprises a vertical tank body, a heat insulation lining, a gas collection chamber, a separator, a slag collection chamber, a coal water slurry distribution pipe and an inlet diffuser, the separator is arranged between the gas collection chamber and the slag collection chamber, an upper exhaust port of the separator is communicated with the gas collection chamber, and a lower slag discharge port of the separator is communicated with the slag collection chamber; an ash inclined pipe at the lower part of the slag collecting chamber extends out of the vertical tank body to form an ash outlet; the coal water slurry distribution pipe is an annular pipe, and coal water slurry distribution holes are formed in the coal water slurry distribution pipe; the inlet diffuser is mounted at the bottom head of the vertical tank body; the inlet end of the supercritical water inlet pipe extends out of the bottom head of the vertical tank body to form a supercritical water inlet; a coal water slurry inlet is formed in the coal water slurry distribution pipe; a gas outlet is formed in a top sealing head of the vertical tank body; the lower end of the gas outlet is communicated with the gas collecting chamber. According to the invention, coal is gasified in a supercritical water environment to generate hydrogen, so that clean utilization of coal is realized; uniform heat supply of supercritical water to gasification reaction can be realized, and high-efficiency gasification of coal under large treatment capacity is realized.

The invention discloses a supercritical carbon dioxide fluid tissue decellularization reaction kettle, system and method based on hydrodynamic eddy current self-generating effect, the reaction kettle comprises a kettle cover, a hoop and a pressure-bearing kettle body, and the pressure-bearing kettle body and the kettle cover are fixed through the hoop; a porous tissue support comprising a top porous plate and a bottom porous plate is arranged in the reaction kettle, an internal space is formed after the bottom and the top porous plate are fixed, the vortex assisting device and the tissue cage are detachably fixed in the internal space, and the tissue cage is arranged below the top porous plate and above the vortex assisting device; the supercritical carbon dioxide fluid enters the reaction kettle to impact the vortex-assisting device, and the vortex-assisting device guides the supercritical carbon dioxide fluid upwards and forms a local recirculation vortex in the tissue cage. The supercritical carbon dioxide fluid is used as a treatment medium, the decellularization efficiency and quality are improved by optimizing fluid dynamics in the reaction kettle and integrating system circulation, and the efficient, uniform, large-scale, low-cost and environment-friendly decellularization process is realized.

The invention discloses a desorption and separation device and a desorption and separation method for substances in a material, and belongs to the technical field of impurity desorption, and the desorption and separation method comprises the following steps: obtaining absorption wavelengths, half-peak widths and relative intensities of all binding bonds between a target material and a specific substance, and obtaining binding bond energy between the target material and the specific substance; an irradiation generating device is adopted to irradiate a target material, energy emitted by the irradiation generating device is radiation or radiation combination equal to binding bond energy between the target material and a specific substance, and the specific substance and the target material are removed. According to the method for desorbing and separating the substances in the material, the energy of the binding bond between the target material and the specific substance is obtained, the radiation energy is accurately provided by utilizing the radiation generation device, the accurate cutting of the binding bond between the target material and the specific substance is realized, and on the premise that the phase change of the material is not influenced and the performance of the material is not damaged, the separation efficiency is improved. And efficient desorption of a target material and a specific substance is realized.

The utility model discloses a pyridine base synthetic production device belongs to pyridine base synthetic technical field, including first preheater and second preheater, first preheater and second preheater all are connected with mixer, the air inlet of mixer is connected liquid nitrogen tank, the discharge port of mixer is connected fixed bed reactor, the discharge port of fixed bed reactor is connected absorption tower, absorption tower is connected extraction column through the pipeline, the first rectifying column is connected through the pipeline to extraction column, the first rectifying column is connected through the pipeline to second rectifying column. The utility model can solve the problem that the existing reaction byproduct is more and miscellaneous, and is not easy to separate. The utility model can reduce the treatment of waste gas, promote the full mixing of feed liquid and extraction liquid, improve extraction efficiency and separation effect, improve the production capacity of extraction tower, reduce the steam energy consumption required for rectification, realize pyridine recovery, improve product separation efficiency and reduce production cost.

A reactor for coating particles includes a rotatable reactor assembly including a drum configured to hold a plurality of particles to be coated, an inlet tube, and an outlet tube, a stationary gas inlet line coupled to the inlet tube by a rotary inlet seal, a stationary gas outlet line coupled to the outlet tube by a rotary outlet seal, and a motor to rotate the rotatable reactor assembly.

In the valve assembly, the inner wall of the valve body includes at least one opening for introducing liquid under pressure below the slurry or liquid outlet from the tube or pipe. The valve assembly is particularly useful for maintaining a semi-continuous or continuous pressurized flow of biomass from the extruder and for extending the reaction zone downstream from the extruder. The advantage of having an extended reaction zone is that it allows for complete processing of the material without causing additional wear on the extruder and also allows for upstream processing of the material in the tube or pipe.

A high-pressure polymerization system having a) a polymerization reactor and b) a reactor blow down system having b1) a reactor blow down vessel, having a circular design over a major portion P having a L / D-ratio in the range from 1.75 to 10.0 and containing an aqueous quenching medium, b2) a release line connecting the polymerization reactor with the reactor blow down vessel and having an outlet located above a maximum level for the aqueous quenching medium, b3) a first emergency valve in the release line to open and close fluid communication between the polymerization reactor and the reactor blow down system, and wherein the release line outlet has a joining piece having an angle (α) between the central axis and a tangent at the reactor blow down vessel in the range from 5° to 70° and the reactor blow down vessel has a vent stack containing a constricted section.

Described is a chemical reactor (1), in particular of the batch type, comprising a body (2) defining a reaction space (V) for a chemical process, a head element (3) configured to seal the body (2), and a support base (5) designed to contain the body (2) and a plurality of discretization elements (4) fixed or capable of being fixed to the head element (3) and extending inside the body (2) according to a main direction of extension and configured to discretize the process action into subspaces (Vs) for releasing activation energy. The head element (3) is movable in such a way as to use the discretization elements (4) to form a controlled mixture of the reaction and a measurement of the solution, preferably a density measurement.

The invention belongs to the technical field of catalysts, and particularly relates to a carbon-coated metal oxide catalyst as well as a preparation method and application thereof. The method comprises the following steps: mixing biomass and enzyme-containing liquid, and carrying out enzymolysis treatment to obtain biomass subjected to enzymolysis treatment; enzymes in the enzyme-containing liquid comprise cellulase and xylanase; mixing the biomass subjected to enzymolysis treatment, metal salt and a nitrogen source, and sequentially performing pyrolysis in protective gas and annealing treatment in an air atmosphere to obtain a carbon-coated metal oxide catalyst; the pyrolysis comprises low-temperature pyrolysis and high-temperature pyrolysis in sequence; the temperature of the low-temperature pyrolysis is 350 to 450 DEG C; the temperature of the high-temperature pyrolysis is 700 to 800 DEG C. The carbon-coated metal oxide catalyst prepared by the invention has a multi-stage structure with a core metal oxide, a middle carbon branch channel and an outer layer N-doped charcoal, is large in specific surface area, has excellent structural uniformity and reactivity, and can improve the efficiency of biomass pyrolysis for hydrogen production.

The present application relates to the technical field of mineral processing, and particularly relates to a modified dodecylamine collector, a preparation method and application thereof.The preparation method of the modified dodecylamine collector provided by the present application comprises the following steps: carrying out glow discharge air plasma treatment on dodecylamine by taking air as a working gas.The present application introduces oxygen-containing and / or nitrogen-containing active groups on the surface of dodecylamine molecules by means of glow discharge air plasma modification of dodecylamine, and the dodecylamine is used for flotation separation of quartz and hematite, so that the adsorption capacity and selectivity of the dodecylamine to quartz, especially fine quartz, are enhanced, and efficient separation of quartz and hematite can be realized at a lower dosage; and the raw material of the preparation method is green and environmentally friendly, the modification process is low-temperature, safe and controllable, no by-product is generated, and the energy consumption is low.

The utility model discloses a dust-free discharging device of a double-cone rotary vacuum reactor, which comprises a dust hood, the dust hood is arranged at the top end of a rigid communicating pipe, the rigid communicating pipe is arranged along the vertical direction, the bottom end of the rigid communicating pipe is connected with the top end of a flexible communicating pipe, and the bottom end of the flexible communicating pipe is fixedly arranged on a sealing cover at the top of a collecting hopper. The bottom of the collecting hopper is connected with the input end of the conveying spiral cylinder, and a material waiting bin is installed below the output end of the conveying spiral cylinder. The side part of the rigid communicating pipe is connected with a lifting assembly; the lifting assembly can be used for buckling the dust removal cover on the outlet end of a discharge valve at the bottom of the double-cone reactor; a conical hole is formed in the dust removal cover, an annular clamping cavity is formed in the periphery of the conical hole, the annular clamping cavity and the conical hole are communicated through a plurality of evenly-distributed air suction holes, and a negative pressure connector communicated with the annular clamping cavity is installed on the side portion of the annular clamping cavity. The discharging device provided by the utility model ensures that no dust and raised dust are generated during discharging, and meanwhile, material loss and contamination are reduced.

This invention relates to an atomic-level manufacturing method and apparatus for two-dimensional metal oxide nanosheets based on controllable micro-explosion, belonging to the field of functional nanomaterials and atomic-level precision manufacturing technology. This invention uses transition metal energetic complexes and energetic oxygen compounds as metal-oxygen integrated precursors. Under the constraint of an array-type nano-confined microcavity, controllable micro-explosions are synchronously triggered by nanosecond lasers to achieve nanosecond-level stoichiometric precision in the directional self-assembly of two-dimensional metal oxide nanosheets. The preparation cycle of this invention is reduced to less than 10 minutes, and the overall energy consumption is less than 1% of that of the traditional hydrothermal method. The product has excellent specific surface area, photocatalytic and cycling performance, and is 100% compatible with existing mass production lines. It is suitable for large-scale manufacturing in fields such as photocatalysis, energy storage, gas sensors, and environmental governance.

The application discloses a low-pressure sewage treatment reaction device, which comprises a low-pressure reaction tank, an air compressor, a vacuum machine and a lifting pump, the air compressor is connected to the lower part of the low-pressure reaction tank through an air pipe, the lifting pump is connected to the low-pressure reaction tank through a water inlet pipe, the vacuum machine is connected to the upper part of the low-pressure reaction tank through a pipeline, an exhaust pipe is arranged at the top of the low-pressure reaction tank, a water outlet pipe is arranged at the upper part of the low-pressure reaction tank, sewage is intermittently fed into the upper part of the low-pressure reaction tank and discharged from the middle part, and after reaction treatment such as biodegradation and stripping under a low-pressure state, the total nitrogen is stably reduced to 10 mg / L; the application is suitable for sewage treatment with large water quality change, has the advantages of short treatment period, good water discharge effect, stable operation, small land occupation and the like.

The present disclosure concerns a rotary apparatus (100) configured for inputting thermal energy (heat) into fluids by having fluidic stream repeatedly propagated through rotating and stationary components arranged inside said rotary apparatus in accordance with essentially helical trajectory. The rotary apparatus (100) comprises two or more rotor blade cascades (R1, R2) coaxially arranged on one or more rotor shaft(s), and at least two stationary vane cascades arranged upstream of a first rotor blade cascade (R1) and downstream of a rearmost rotor blade cascade (R2), respectively. In operation, fluid, such as gas, is heated inside the rotary apparatus while repeatedly passing through cascades S1-R1-R2-S2 in accordance with essentially helical trajectory. The rotor blade cascades can be configured to rotate in co- and counter directions and / or with the same or different speed. In some configurations the apparatus further comprises a flow turn cascade (FTC) configured as a stationary vane cascade arranged between successive coaxial rotor blade cascades (R1, R2). Related method for thermally treating fluids is further provided.

The utility model discloses an aerogel supercritical fluid drying device which comprises a first gas storage tank, a first reaction kettle and a first collecting tank, a first discharging port is formed in the upper end of the first gas storage tank, a first feeding port is formed in the upper end of the first reaction kettle, and a second discharging port is formed in the lower end of the first collecting tank. The first discharging port is connected with the first feeding port through a first connecting pipe, a second discharging port is formed in the upper end of the first reaction kettle, a second feeding port is formed in the upper end of the first collecting tank, the second discharging port is connected with the second feeding port through a second connecting pipe, a first partition plate is arranged in the first collecting tank, and a second partition plate is arranged in the second collecting tank. The first collecting tank is divided into a first cavity and a second cavity by the first partition plate, and a first coil pipe is arranged in the first cavity. According to the aerogel supercritical fluid drying device, through the first heating rod and the second heating rod, the supercritical fluid state of CO2 gas is guaranteed, and the good drying effect is achieved.

This invention discloses a tungsten-based dust detritonation device for fusion reactors. In the field of nuclear fusion technology, a preheating degassing vacuum chamber preheats and degasses tungsten-based dust; a melting vacuum chamber melts the tungsten-based dust into a tungsten-based liquid; and a cooling vacuum chamber cools the tungsten-based liquid into a solid. A common manifold connects a vacuum extraction mechanism to the preheating degassing vacuum chamber, the melting vacuum chamber, and the cooling vacuum chamber, allowing the vacuum extraction mechanism to extract gas from the preheating degassing vacuum chamber, the melting vacuum chamber, and the cooling vacuum chamber. The vacuum extraction mechanism is connected to a recovery mechanism so that the extracted gas flows into the recovery mechanism. A detection mechanism detects the tritium parameters of the gas flowing towards the vacuum extraction mechanism in the common manifold. A controller is configured to control the operation of the preheating degassing vacuum chamber and the melting vacuum chamber based on the tritium parameters. This reduces the risk of tritium and radioactive activation product leakage and associated safety hazards.

The utility model discloses a visible vacuum coil heating device, belongs to the technical field of test equipment, and aims to overcome the defect that the parameter setting cost of the existing sediment manufacturing equipment is higher. The heating device comprises an inner transparent tube and an outer transparent tube sleeved outside the inner transparent tube, a cooling space is arranged between the inner transparent tube and the outer transparent tube, the cooling space is provided with a water inlet and a water outlet, a coil is wound on the outer wall of the inner transparent tube, and a vacuum cavity is arranged in the inner transparent tube and provided with a graphite tube. The heating device further comprises a temperature detection device and a pressure detection device for detecting the temperature of the graphite pipe and the air pressure of the vacuum cavity. A magnetic field generated by electrifying the coil can heat the graphite pipe, so that specific mixed gas in the vacuum cavity can react to form sediments, the inner transparent pipe and the outer transparent pipe are convenient for observing the state of the sediments, the sediments can reach the optimal state by controlling the temperature and the pressure, and parameters required by the sediments in the optimal state are convenient to obtain; and the parameter acquisition cost is reduced.

The extruder and valve system uses multiple injector assemblies to convey the biomass stream and includes conduits for providing water or other fluids and / or steam for pretreatment. Each injector in an assembly is connected to a corresponding port in the extruder. The ports can be positioned at discrete locations on or after the extruder to deliver the appropriate amount of fluid or steam for treatment of the biomass or other material.

The present application relates to the technical fields of hydrothermal liquefaction, and discloses an electrode reaction kettle, which comprises a reaction kettle cavity, a drain port arranged at the bottom of the reaction kettle cavity, a cavity cover arranged at the top of the reaction kettle cavity, and a feed inlet, a liquid inlet, an air inlet and an exhaust port arranged on the cavity cover; and a plasma device fixed to the reaction kettle cavity and / or the cavity cover, which is used to discharge electricity into the reaction kettle cavity to generate plasma. The present application does not involve the use of catalysts, is green and environmentally friendly, and is used for plastic degradation without involving the use of a large amount of catalysts, thus avoiding the phenomenon of subsequent separation and purification difficulties. The electrode reaction kettle can realize the plasma electrolytic degradation of plastics, and the operation process is simple and suitable for industrial production.

This application provides a device for surface modification of white fused alumina by nanoparticle atomization spraying, relating to the field of white fused alumina surface modification technology. It includes a first support frame. Through a set white fused alumina multi-atomization modification component, white fused alumina powder raw material is added to the inner side of a white fused alumina raw material storage box via a white fused alumina adding pipe. After addition, a vacuum pump is used to evacuate the white fused alumina raw material storage box and the white fused alumina spraying modification box. The white fused alumina modification operation needs to be carried out in a vacuum environment. An inclined guide ramp and guide chute allow the white fused alumina powder raw material to fall evenly through the white fused alumina adding pipe to the inner side of the white fused alumina spraying modification box. An extraction pump is controlled to extract nanoparticles from the inner side of the nanoparticle storage tank and transmit them to an atomizing nozzle through a transmission pipe. The atomizing nozzle atomizes and sprays the nanoparticles, allowing the falling white fused alumina raw material to contact the nanoparticles evenly.

The invention relates to a cow dung utilization and cow dung heavy metal and new pollutant purification method and a medicine permeating disc grinder, and belongs to the technical field of livestock and poultry manure comprehensive utilization environment. The method comprises the following steps: permeating fresh cow dung by using an oxidation extracting agent, grinding, rubbing, performing oxidation extraction to obtain a cow dung oxidation extracting agent mixture, performing solid-liquid separation, and purifying to obtain a cow dung extracting solution and a cow dung solid substance; the cow dung solid matter is incompletely carbonized to obtain cow dung semi-carbonized powder; adding an alkane extracting agent into the cow dung extracting solution, extracting and layering to obtain a raw material liquid fertilizer at the lower layer and volatilizing and recovering the extracting agent at the upper layer to obtain cow dung extracting oil; the cow dung extract oil and the cow dung semi-carbonized powder are mixed, granulated, subjected to gradient heating, carbonized and activated to obtain ground cow dung activated carbon, namely the cow dung carbon-based new pollutant adsorbent which is used for adsorbing and purifying a raw material liquid fertilizer to obtain the liquid fertilizer. Efficient extraction of useful substances such as cow dung oil in cow dung and high-added-value utilization of cellulose and lignin can be synchronously achieved, and a cow dung carbon-based new pollutant adsorbent and a safe liquid fertilizer are prepared.

A compression device according to the present invention, which compresses a material by using a centrifugal force, applies a centrifugal force to a material arranged in a ring shape to compress the material arranged in the ring shape with the centrifugal force. The material mentioned above may be hydrogen, helium, hydrogenated lanthanum, hydrogenated calcium, a high-pressure induced superconducting substance, or a quantum solid.

A urea-producing plant including a first steam network, configured to receive high-pressure steam, and a second steam network, configured to receive low-pressure steam, wherein the plant includes a steam compressor configured to receive steam from the second steam network, to convert low-pressure steam into high-pressure steam and to deliver the high-pressure steam to the first steam network. A method for reducing carbon dioxide emissions from a urea-producing plant.

To provide a combustion synthesis apparatus capable of accurately cooling and purifying the atmosphere in a furnace in a short time.SOLUTION: A combustion synthesis apparatus (1) according to the present invention includes: a combustion synthesis furnace (2); and a circulation mechanism (3) which is attached to the outside of the combustion synthesis furnace and circulates an atmosphere in the combustion synthesis furnace, wherein the circulation mechanism includes: a first heat exchanger (4) connected to a gas outlet side in the combustion synthesis furnace; a second heat exchanger (7) connected to a gas inlet side in the combustion synthesis furnace; a purifier (5) connected between the first heat exchanger and the second heat exchanger; and a compressor (6) connected between the purifier and the second heat exchanger.SELECTED DRAWING: Figure 1

The present disclosure relates to an integrated plant process for the production of urea and melamine, said process having a urea synthesis section with HP CO2 stripping and a part of the CO2 feed is supplied to a recovery section.

The invention discloses an aluminum industry fluorine-containing waste electrolyte negative pressure reaction device which comprises a kettle type reactor, a power source, a stirring structure, a spiral heat exchange material mixing structure and a negative pressure recovery unit, a raw material inlet, a sulfuric acid inlet, a water inlet and an exhaust port are formed in the upper portion of the kettle type reactor, and an extraction opening of the negative pressure recovery unit is connected with the exhaust port. A discharge hole is formed in the bottom of the kettle type reactor. The kettle type reactor is in a static closed state, negative pressure is pumped in combination with the negative pressure recovery unit, and an environment is created for roasting fluorine extraction of fluorine-containing waste electrolyte and concentrated sulfuric acid; stirring of the stirring paddle is combined with the spiral blade capable of extracting materials, so that forced mixing of the materials is promoted, the heat transfer efficiency is improved, and reaction is promoted; according to the method, the pyrogenic roasting process and the wet leaching process of the fluorine-containing waste electrolyte are combined and completed in the same reactor, so that the technological process is shortened, the equipment investment is reduced, materials adhering to the wall can be dissolved and eluted, and normal operation of the next round of roasting fluorine extraction reaction is ensured.

The utility model discloses a prepolymer vacuum reaction kettle which comprises a kettle body, a feeding pipe, a rack and an exhaust pipe are arranged on the outer wall of the top of the kettle body, one end of the exhaust pipe is fixedly connected with a vacuum pump, a motor is arranged on the outer wall of the top of the rack, an output shaft of the motor is fixedly connected with a stirring rod, and the stirring rod is fixedly connected with the rack. One end of the stirring rod extends into the kettle body, a first baffle and three first stirring paddles distributed at equal intervals are arranged on the circumferential outer wall of the stirring rod, and the first baffle is located above the first stirring paddles. The prepolymer vacuum reaction kettle disclosed by the utility model has the effects that the content of bubbles in the prepolymer is effectively reduced, the compactness and the stability of the prepolymer are improved, and the performance reduction of the prepolymer caused by the bubbles is avoided.