465results about "Pressurized chemical process" patented technology

The invention discloses a method for preparing micro-nano magnesium hydride powder, which comprises the following steps: in a vacuum environment I, heating a magnesium raw material to form magnesium steam, and simultaneously introducing trace carrier gas I; in the vacuum environment II, magnesium steam is conveyed through the trace carrier gas I to be mixed with the carrier gas II to form mixed gas, meanwhile, the mixed gas is made to rapidly flow through the injection evacuator, the magnesium steam is cooled and hydrogenated, and the micro-nano magnesium hydride powder is formed. Compared with the prior art, the gasification efficiency of magnesium is higher, the magnesium is taken away by airflow, residues in an evaporation chamber are less, the utilization rate of the magnesium is high, produced magnesium powder is directly brought into the next link through hydrogen carrier gas, the processes of passivation, bin opening, powder taking and the like are omitted, magnesium powder conveying is more efficient and safer, and the production cost is reduced. Through the pre-hydrogenation of the magnesium powder and the shearing action of the carrier gas of the high-speed hydrogen, the generated magnesium powder particles are smaller, the magnesium hydride powder particles generated after hydrogenation are smaller, the activity is better, and the technical process is easier to realize large-scale amplification and automatic control.

The invention relates to the technical field of gas injection, in particular to a carbon dioxide gas-liquid combined mixed injection structure and a using method thereof.The carbon dioxide gas-liquid combined mixed injection structure comprises a reaction tank, a hollow pipe and a communicating pipe, the hollow pipe and the communicating pipe are installed at the two ends of the reaction tank, and the end, away from the reaction tank, of the communicating pipe communicates with a discharging pipe; the piston cylinder is installed at the end of the hollow pipe, a double-material pumping mechanism is arranged in the piston cylinder, and the double-material pumping mechanism can convey materials in the piston cylinder into the hollow pipe so as to adjust the pressure intensity in the hollow pipe; the pressurization atomization mechanism is arranged in the hollow pipe; and the conduction regulation and control mechanism is arranged in the conduction pipe, a follow-up disc is connected to the conduction regulation and control mechanism, a second discharge hole is formed in the follow-up disc, and a follow-up rotating assembly is further arranged in the conduction pipe. Therefore, the effect of spraying gas under the specific pressure is achieved.

Pressure lock and extruding apparatus for high pressure extrusion with a pressure lock.

The utility model discloses a polymerization reaction kettle. The polymerization reaction kettle comprises a reaction kettle body, a control device, a turnover driving mechanism and a supporting mechanism, the overturning driving mechanism can drive the reaction kettle body to overturn along a set rotating shaft; the reaction kettle body comprises a shell, a stirring driving mechanism and a stirring mechanism; in a first state, the overturning driving mechanism drives the reaction kettle body to be in a first posture; and in the second state, the overturning driving mechanism drives the reaction kettle body to be in a second posture. The polymerization reaction kettle provided by the utility model has the excellent surface updating function of a horizontal reaction kettle and the production flexibility of a vertical reaction kettle, and meanwhile, the working efficiency can be improved. In addition, clean discharging can be achieved in the aspect of discharging, and the cleaning problem of an existing horizontal batch polycondensation reaction kettle is solved.

A device and method for preparing high-purity metals by vacuum distillation and bidirectional step condensation, the device comprising an atmosphere control device, a vacuum distillation device, a charging device, an intelligent control device, and an exhaust gas treatment device. The atmosphere control device comprises a nitrogen bottle and a control valve located above the bottle mouth for controlling the opening and closing of the nitrogen bottle. The vacuum distillation device comprises a vacuum distillation device and a vacuum pump connected to the vacuum distillation device via a pipeline. The charging device is located in the middle of the vacuum distillation device, and the intelligent control device is connected to the vacuum distillation device. The exhaust gas treatment device comprises an impurity removal device. The vacuum distillation device is provided with a plurality of heaters, which are arranged in parallel along the length direction of the charging device and the condensation zone on both sides of the vacuum distillation device. The present invention also includes a method for preparing high-purity metals using the device. The device of the present invention has a simple structure, is not restricted by the gravity field, is convenient for sampling, and has high impurity removal efficiency.

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.

The present invention provides a method for producing olefins by catalytic dehydrogenation of alkanes and an apparatus. The apparatus comprises a reaction unit, a regeneration unit, and a product separation unit; the reaction unit comprises a pre-lift zone, an oil agent contact zone, a reaction zone, a product quenching zone, a reactor outlet zone, an oil agent separation zone, and a stripping zone. The oil agent contact zone is provided with a feeding distributor and a catalyst distributor, and an oil agent contact space is formed between the feeding distributor and the catalyst distributor, enhancing countercurrent contact between an alkane and a catalyst, and better facilitating the initiation of a catalytic dehydrogenation reaction. By bringing an alkane feedstock into contact with a catalyst and then leveraging the shape and parameters of the reactor, the present invention provides a proper reaction environment for a catalytic dehydrogenation reaction, thereby facilitating the catalytic dehydrogenation reaction, and improving the alkane conversion rate. In addition, the method and the apparatus of the present invention allow for alkane dehydrogenation reactions to be conducted under negative pressure, resulting in good safety and further improving alkane conversion rates and olefin selectivity.

The embodiment of the invention discloses a feeding system and method for a wet oxidation treatment process, and the system comprises a material feeding tank, a normal-pressure feeding pump set which is used for pumping a to-be-treated material into the material feeding tank, a pressurization system which is used for filling the material feeding tank with gas, and a feeding pump set which is used for pumping the to-be-treated material into the material feeding tank, and the pressure relief system is used for discharging redundant gas in the material feeding tank. The process is simple, the material feeding tank with the normal pressure and high pressure seamless switching function is ingeniously integrated at the front end of the wet catalytic oxidation treatment process, it is ensured that raw materials are stably and efficiently supplied to the pressurized reactor / kettle, the safety and flexibility of the whole treatment process are improved, and the production cost is reduced. In the feeding link, the dependence of a traditional process on a high-pressure pump is thoroughly eliminated, the initial equipment investment cost is greatly reduced, the problem that the feeding pump is frequently overhauled due to abrasion is effectively relieved by reducing direct pumping of materials in a high-pressure environment, and the maintenance frequency and the maintenance cost are greatly reduced.

1. A method for treating a material comprising at least one organic compound capable of releasing undesirable anions during thermal and / or chemical and / or physical treatment, comprising at least one step in which the material is contacted with a dense pressurized aqueous medium (particularly subcritical or supercritical) or a pressurized aqueous medium in the form of steam in the presence of a material reactive to the undesirable anions and capable of fixing the undesirable anions in its structure, whereby the organic compounds are destroyed and at least partially mineralized; and at the same time, the undesirable anions are released and immediately captured by a solid material reactive to the undesirable anions and then fixed, producing an aqueous solution free of undesirable anions.

A system and method for oxidative dehydrogenation including a first reactor having a first ODH catalyst to dehydrogenate an alkane to a corresponding alkene at a first temperature and facilitate generation of steam, a second reactor having a second ODH catalyst to dehydrogenate alkane in a first-reactor effluent to the corresponding alkene at a second temperature that may be greater than the first temperature and facilitate generation of steam, and a third reactor having a third ODH catalyst to dehydrogenate alkane in a second-reactor effluent to the corresponding alkene at a third temperature that may be greater than the first temperature or the second temperature and facilitate generation of steam.

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 relates to a method for producing methylamine by a generally exothermic gas-phase reaction of methanol and ammonia as reactants in the presence of a heterogeneous catalyst at a pressure in the range of 15 to 35 bar. The reactants are evaporated in one or more heat exchangers and superheated prior to being fed to the reactor, wherein the heat exchangers in turn are heated with a stream of hotter product gas from the reactor. In addition to methylamine (monomethylamine, dimethylamine, and trimethylamine), the product gas stream contains unconverted reactants, water, and any other reaction by-products. To control the reactor inlet temperature and limit it to a temperature in the range of 350 DEG C to 410 DEG C, a suitable quenching liquid is introduced into the hot product gas stream prior to feeding the hot product gas stream to a heat exchanger for heating the reactants. Evaporation and overheating of the added quenching liquid removes the corresponding amount of energy extracted from the hot product gas stream, with the result of efficient and rapid cooling of the hot product gas stream. As a result, the temperature difference between the cold side and the hot side of the heat exchanger is small, which means less energy is transferred to the reactant stream, and thus its reactor inlet temperature can be adjusted or limited.

The application discloses a preparation method of a nickel-doped and high-hydrated cobalt-chromium-iron ore monocrystal under high temperature and high pressure, and the method comprises the following steps: preparing a cylindrical cobalt-chromium-iron ore sample by taking solid basic cobalt carbonate powder, solid chromium (III) acetate hydroxide crystal powder, solid nickel stearate, solid oxalic acid powder, solid chromium hydroxide powder, solid nickel hydroxide powder and liquid dilute nitric acid as starting raw materials; preparing water source sheets by taking chromium hydroxide powder and nickel hydroxide powder in a weight ratio of 4:1; placing two water source sheets at two ends of the cylindrical cobalt-chromium-iron ore sample respectively and then putting them into a double-capsule structure sample bin; and obtaining a cobalt-chromium-iron ore monocrystal after high-temperature and high-pressure reaction, so that the blank of the preparation technology of the nickel-doped and high-hydrated cobalt-chromium-iron ore large-grain monocrystal under the current high-temperature and high-pressure condition is solved, and the experimental sample of the nickel-doped and high-hydrated cobalt-chromium-iron ore large-grain monocrystal is obtained.

The invention relates to a device for carrying out chemical and physical processes, wherein at least two nozzles, each with an associated pump and supply line, are provided for spraying a liquid medium into a reactor space enclosed by a reactor housing onto a common collision point, wherein an outlet opening is provided for removing the resulting products and excess gas from the reactor housing. Within the scope of the invention, it is proposed that the reactor space enclosed by the reactor housing not taper toward the outlet opening for removing the resulting products and excess gas from the reactor housing. This advantageously minimizes the settling of material on the inner wall of the reactor housing.

The utility model relates to the field of disinfectant production and processing, in particular to an online chlorine dioxide generator. The utility model provides an on-line chlorine dioxide generator capable of enabling reaction ions to fully collide to participate in reaction. The chlorine dioxide on-line generator comprises a reaction kettle and a PLC (Programmable Logic Controller), and the PLC is arranged at the upper part of the front side of the reaction kettle; the PLC is connected with all the mechanisms through the wires; the two sides of the reaction kettle penetrate through the kettle wall and are provided with the vibration mechanisms capable of enabling reaction liquid in the reaction kettle to collide with each other through vibration; the upper parts of the left side and the right side of the reaction kettle penetrate through the kettle wall and are provided with the electric control proportional valves capable of accurately controlling the total amount of reaction raw materials and the ratio of the raw materials. During use, the electronic control proportional valve accurately controls the total amount and proportion of raw materials, and meanwhile, the vibration mechanism drives reaction liquid in the reaction kettle to collide with each other, so that the reaction degree within a certain time is improved.

The utility model discloses a high-pressure reaction kettle discharge pipe anti-blocking structure which comprises a mounting structure, an ultrasonic transducer and a driving structure, the mounting structure is arranged on one side of a discharge pipeline and comprises a mounting channel and a mounting part, the mounting channel is communicated with the interior of the discharge pipeline, and the mounting part is slidably arranged in the mounting channel; the ultrasonic transducer is mounted on the mounting piece; and the driving structure is connected with the mounting part and is used for driving the mounting part to slide in the mounting channel, so that the ultrasonic transducer is mounted on the inner wall of the discharging pipeline in an abutting manner. According to the high-pressure reaction kettle, adhesion and accumulation of materials in the pipeline can be effectively reduced, so that the risk of blockage of the discharge pipe of the high-pressure reaction kettle is reduced.

The utility model discloses compatible high-viscosity semi-continuous polyester production equipment which is characterized in that a titanium and antimony catalyst, CHDM / NPG, EG and BDO injection port is formed in the top of a slurry preparation tank, an outlet of the slurry preparation tank is connected with an inlet of a first esterification kettle through a slurry pump or directly connected with the inlet of the first esterification kettle, and an ester and titanium catalyst injection port is further formed in the top of the first esterification kettle; one path of a material outlet of the first esterification kettle extends to the bottom of the kettle and is provided with a first electric valve, the other path of the material outlet of the first esterification kettle extends to the middle of the kettle and is provided with a second electric valve, and outlets of the two electric valves are connected in parallel and then are connected with a feeding hole of a second esterification pre-polycondensation kettle through a filter; the top of the second esterification pre-polycondensation kettle is also provided with a stabilizer, a polycondensation catalyst and a nitrogen injection port; a material outlet of the second esterification pre-polycondensation kettle is connected with an inlet of the polycondensation kettle through a pre-polycondensation gear pump and a filter; and a material outlet of the polycondensation kettle is connected with granulator granulation equipment through a polycondensation gear pump. The equipment can realize product diversification and differentiation, and is high in compatibility, high in productivity and high in viscosity.

The invention relates to a device for synthesizing urea, comprising an ammonia source 10 and a urea synthesis unit 20 wherein the ammonia source 10 is connected to the urea synthesis unit 20 by means of a reactant line 30, characterized in that the device comprises an ammonia turbine 40 wherein the ammonia source 10 is connected to the ammonia turbine 40 by means of a fuel line 50, and the ammonia gas turbine 40 is connected to the urea synthesis unit 20 through a steam pipeline 60.

1,2-propanediol is prepared by a process comprising the steps of: step a) reacting propene with hydrogen peroxide in the presence of a catalyst mixture comprising a phase transfer catalyst and a polytungstophosphate at 50-110°C in a liquid reaction mixture comprising an aqueous phase having a maximum apparent pH of 6 and an organic phase; step b) separating the reaction mixture into an aqueous phase (P a ) and an organic phase (P o ) comprising 1,2-propanediol; step c) recycling at least a portion of the separated organic phase (P o ) to step a); step d) recovering 1,2-propanediol from the aqueous phase (P a ); and step e) reacting a tungstate with hydrogen peroxide and phosphoric acid in the presence of a phase transfer catalyst in a liquid mixture comprising an aqueous phase and an organic phase at 5-40°C, followed by passing at least a portion of the resulting organic phase comprising polytungstophosphate and phase transfer catalyst to reaction step a).

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 invention relates to an opening and closing mechanism, an exhaust switching mechanism, and a substrate processing apparatus. The opening and closing mechanism of the present invention is provided with: a base member which can be attached to each of the attachment openings of the switching box; the upper supporting part is arranged on the upper surface of the base part; an actuator; a rod extending downward from the actuator while penetrating the base member and moving in the vertical direction by the actuator; the lower supporting part is arranged on the lower surface of the base part; a cover member provided below the base member and capable of blocking the communication port; and a first link and a second link provided below the base member and connecting the rod, the lower support member, and the cover member. The cover member is switched between an open state and a closed state by transmitting movement of the rod to the cover member via the first link and the second link.

A process for the dehydration of ethanol to ethylene with reduced steam consumption and the use of latent heat of condensation to generate steam.

Thermochemical treatment device (1) comprising: - a chamber (10); - a material inlet port (18) for material (80) and a material discharge port (19) for material (80); - a steam injection device (60) for steam (50); - a screw-type propeller (30) extending within the internal volume (15); wherein the steam injection device (60) for steam (50) includes a steam diffusion conduit (61) for steam (50). Figure for the abbreviation: Figure 1

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.

The CSHS reaction device comprises a liquid phase conveying system, a reaction system, a temperature control system and a sample collection system, the liquid phase conveying system consists of three same high-pressure conveying pumps for liquid chromatography, corresponding liquid phase pipelines and adapters; the reaction system consists of two sets of electric heating devices, corresponding liquid phase pipelines and adapters; the temperature control system controls the two sets of electric heating devices to enable the electric heating devices to be subjected to programmed temperature rise and stabilize the temperature to be 400 DEG C or above; and the sample collection system consists of a water cooling device, a filter and a back pressure valve. The CSHS reaction device is applied to preparation of a semiconductor H2S sensing material, is good in structural consistency and excellent in sensing performance, and can meet application requirements.

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.