194 results about "Continuous reactor" patented technology

A geothermal system including a heat-driven process system using heat extracted from a magma wellbore for driving a thermal process. The system includes a magma wellbore connected to the heat-driven process system in a closed loop. A heated heat transfer fluid conveys the heat from the magma wellbore to a reactor housing a decomposition reaction. The reactor can be a batch reactor, a continuous reactor, or a through-flow reactor. The heat provides the reaction temperature necessary for driving the decomposition reaction of a polymer to an end product. The heat can be provided directly by the heated heat transfer fluid, by an intermediate heat transfer fluid heated by the heated heat transfer fluid, or by a reaction medium heated by the heated heat transfer fluid.

A geothermal system including a heat-driven process system using heat extracted from a magma wellbore for driving a thermal process. The system includes a magma wellbore connected to the heat-driven process system in a closed loop. A heated heat transfer fluid conveys the heat from the magma wellbore to a reactor housing a decomposition reaction. The reactor can be a batch reactor, a continuous reactor, or a through-flow reactor. The heat provides the reaction temperature necessary for driving the decomposition reaction of a polymer to an end product. The heat can be provided directly by the heated heat transfer fluid, by an intermediate heat transfer fluid heated by the heated heat transfer fluid, or by a reaction medium heated by the heated heat transfer fluid.

A geothermal system including a heat-driven process system using heat extracted from a magma wellbore for driving a thermal process. The system includes a magma wellbore connected to the heat-driven process system in a closed loop. A heated heat transfer fluid conveys the heat from the magma wellbore to a reactor housing a decomposition reaction. The reactor can be a batch reactor, a continuous reactor, or a through-flow reactor. The heat provides the reaction temperature necessary for driving the decomposition reaction of a polymer to an end product. The heat can be provided directly by the heated heat transfer fluid, by an intermediate heat transfer fluid heated by the heated heat transfer fluid, or by a reaction medium heated by the heated heat transfer fluid.

A geothermal system including a heat-driven process system using heat extracted from a magma wellbore for driving a thermal process. The system includes a magma wellbore connected to the heat-driven process system in a closed loop. A heated heat transfer fluid conveys the heat from the magma wellbore to a reactor housing a decomposition reaction. The reactor can be a batch reactor, a continuous reactor, or a through-flow reactor. The heat provides the reaction temperature necessary for driving the decomposition reaction of a polymer to an end product. The heat can be provided directly by the heated heat transfer fluid, by an intermediate heat transfer fluid heated by the heated heat transfer fluid, or by a reaction medium heated by the heated heat transfer fluid.

The invention discloses a continuous production process of a CO2-based multipolymer, and belongs to the technical field of polycarbonate synthesis. The technological process comprises the following steps: firstly, preparing an auxiliary agent, a solid-state monomer, a liquid-state reaction monomer and any solvent into a mixed solution in a premixer (1); continuously feeding carbon dioxide and the mixed solution into a multi-stage continuous reactor for mixing and heating to initiate a reaction, wherein the total reaction residence time of the materials in the multi-stage continuous reactor is controlled to be 10 minutes to 5 hours; and after the reaction is completed, carrying out post-treatment to complete the continuous production of the CO2-based multipolymer. The process particularly optimizes the effective continuous polymerization of high-molecular and high-viscosity materials of the CO2-based multipolymer. Through accurate control of the multi-stage tubular reactor, appropriate reaction viscosity is realized, further reaction uniformity of materials in the screw extrusion reactor is ensured, and reaction efficiency is improved.

The invention relates to a high-selectivity continuous synthesis method of dipentaerythritol. According to the invention, pentaerythritol is introduced, so that more dipentaerythritol intermediates can be effectively generated at the initial stage of reaction, and the selectivity of dipentaerythritol is greatly improved. The reaction product solution can be separated through a conventional separation method, the separation cost is low, the obtained crude product pentaerythritol can serve as an additive to participate in the reaction again and be recycled, and high selectivity of dipentaerythritol is guaranteed. Besides, a continuous reactor is used for condensation reaction under the high-temperature condition, compared with a conventional method, the reaction rate is higher, the reaction time can be shortened to be within 1 hour, the selectivity of dipentaerythritol is improved, and the yield even reaches 30% or above.

A geothermal system including a heat-driven process system using heat extracted from a magma wellbore for driving a thermal process. The system includes a magma wellbore connected to the heat-driven process system in a closed loop. A heated heat transfer fluid conveys the heat from the magma wellbore to a reactor housing a decomposition reaction. The reactor can be a batch reactor, a continuous reactor, or a through-flow reactor. The heat provides the reaction temperature necessary for driving the decomposition reaction of a polymer to an end product. The heat can be provided directly by the heated heat transfer fluid, by an intermediate heat transfer fluid heated by the heated heat transfer fluid, or by a reaction medium heated by the heated heat transfer fluid.

The invention discloses an efficient continuous PET (polyethylene terephthalate) degradation process based on a membrane method technology, which comprises the following steps: mixing an immobilized enzyme compound, a PET raw material to be degraded and a glycine buffer solution to form a reaction solution for degradation, then constructing a'continuous reactor 'by using two size screening membranes, performing primary separation by using an ultrafiltration membrane or a microfiltration membrane, and performing secondary separation by using an ultrafiltration membrane or a microfiltration membrane. A nanofiltration membrane or a reverse osmosis membrane is adopted for secondary separation of the degradation product, automatic separation of the degradation product and a reaction system and automatic purification of the degradation product are achieved, and then the enzymatic degradation efficiency and the product recovery efficiency are improved. Through the construction of the continuous reactor, the automatic PET degradation is realized, so that the costs in the aspects of labor, time, economy and the like are remarkably saved. The undegraded PET and a small amount of exfoliative enzyme can be circulated back to the reaction kettle after being intercepted by the size screening membrane, and the process not only can promote full contact between the undegraded PET and the hydrolase, but also can reduce the loss of the enzyme in the degradation process.

The depolymerization method for depolymerizing a synthetic resin into raw material monomers comprises: a step for setting a target temperature inside a flow reactor (13e) and a target residence time of a synthetic resin and a solvent having a weight ratio of 1.5 times or more to the synthetic resin in the flow reactor (13e) so that the yield of the raw material monomers is 70% or more; and a step for supplying the synthetic resin and the solvent to the flow reactor (13e) so that the temperature inside the flow reactor (13e) becomes the target temperature, the residence time of the synthetic resin and the solvent in the flow reactor (13e) becomes the target residence time, and the pressure inside the flow reactor (13e) becomes 10 MPa or more.

The application discloses a continuous synthesis method of an amicarbazone intermediate 5-isopropyl-1,3,4-oxadiazole-2(3H)-ketone. The method comprises two continuous processes of hydrazinolysis and phosgenation: continuously feeding a mixture of isobutyric acid and a solvent, a mixture of hydrazine hydrate and a catalyst into a hydrazinolysis continuous reactor respectively, carrying out a warming reflux dehydration reaction, and obtaining an isobutyryl hydrazine solution shown in formula I; continuously feeding the isobutyryl hydrazine solution and phosgene into a phosgenation continuous reactor, carrying out a phosgenation reaction, and after distillation and desolventizing treatment of a reaction solution, obtaining 5-isopropyl-1,3,4-oxadiazole-2(3H)-ketone shown in formula II. The application has the advantages of simple reaction flow, high product yield, and significant production efficiency improvement, and is suitable for industrial large-scale production.

The present invention relates to a method to produce calcium rich-based aggregates by electrodeposition in salty aqueous CO2 enriched solutions, that can be used in the construction industry. The method includes filtering an aqueous salty solution to produce an aqueous salty solution free of organic debris or pollutants, adjusting a temperature and pH in a conditioning reactor CR1 to produce an aqueous salty solution, bringing the aqueous salty solution from CR1 to a continuous reactor CR2 equipped with an electroactive substrate comprising at least one cathode and at least one anode connected to an electrical DC supply, injecting in CR2 a flux of a gas mixture containing CO2 (C-gas) in contact with the flux of the aqueous solution, applying to the flux of the CO2-enriched aqueous solution a constant DC current, and recovering the calcium rich-based aggregates deposited on the electroactive substrate and / or on the bottom of CR2.

The invention relates to a continuous production method of ultra-pure 2, 3, 4, 4 '-tetrahydroxybenzophenone, which comprises the following steps: completely dissolving p-hydroxybenzoic acid in high-boiling range petroleum ether, and completely dissolving pyrogallic acid in the high-boiling range petroleum ether; the preparation method comprises the following steps: adding a p-hydroxybenzoic acid solution and a pyrogallic acid solution into an ultra-pure continuous reactor group, adding boron trifluoride diethyl etherate into the ultra-pure continuous reactor group at a flowing speed, reacting at 110-140 DEG C, adding the obtained reaction solution into the next ultra-pure continuous reactor group, stirring in ice water, filtering, washing and recrystallizing to obtain the 2, 3, 4, 5-tetramethyl-3, 5-dihydroxybenzoic acid. According to the present invention, the reaction time is substantially shortened, the conversion rate is 70-80%, the purity of the obtained electronic product is more than or equal to 99.2%, the content of the metal ions such as sodium, aluminum, copper, iron, calcium, zinc and boron is less than or equal to 60 ppb, the reaction materials, the reaction temperature and the reaction rate are controllable, the reaction is sufficient, the yield of the obtained target product is stable, and the method can be used for continuous production.

The application discloses a catalyst for preparing malononitrile, a preparation method of the catalyst and a method for preparing malononitrile by using the catalyst. The catalyst is a solid catalyst, which is an acidic catalyst loaded with rare earth metal oxide. The method for preparing malononitrile is that cyanoacetic acid or cyanoacetate or cyanoacetamide and an ammonia source are subjected to ammoniation dehydration reaction in a continuous reactor to prepare malononitrile according to a certain molar ratio. Then, vacuum distillation (20 torr-25 torr) is carried out, and a fraction collected at 110 DEG C-120 DEG C is malononitrile product. The ammonia source can be ammonia gas, ammonia water, ammonium carbonate or urea. The method for preparing malononitrile can reduce production cost, improve production safety, reduce the discharge amount of three wastes in the preparation of malononitrile by using an existing process, and improve product quality, and is a sustainable and green synthesis route.

The utility model belongs to the field of chemical production equipment, and discloses a cyclic carbonate synthesis system which comprises a reaction unit, the reaction unit is provided with a first feed port, a second feed port and a first discharge port, the first feed port is communicated with a carbon dioxide supply unit, the second feed port is communicated with an epoxide supply unit, and the first discharge port is communicated with a second discharge port. The reaction unit comprises a first continuous reactor, the first continuous reactor is provided with a reaction channel, the outer surface of the first continuous reactor is sleeved with a jacket, the first feeding port, the second feeding port and the first discharging port are communicated with the reaction channel, and the first feeding port, the second feeding port and the second discharging port are communicated with the reaction channel. A containing cavity is formed between the jacket and the first continuous reactor, a heat transfer fluid is arranged in the containing cavity, through the design, the reaction units are evenly heated through hot oil in the containing cavity, and then the stability of the cyclic carbonate preparation process is improved.

This invention provides a photochemical continuous reactor, comprising an outer shell; the outer shell includes a reactor cavity and sealing caps independently disposed at both ends of the reactor cavity; inside the reactor cavity, a light-emitting device, a transparent sleeve, and a reaction tube assembly are arranged sequentially from the center outwards. The photochemical continuous reactor provided by this invention solves the problem of low light energy utilization in photochemical reactions and effectively realizes ultra-low temperature or ultra-high temperature photochemical production, providing important insights for addressing related difficulties encountered in photochemical production processes.

The present invention relates to a process for producing a transition metal carbonate in a continuous reactor. According to other aspects, the present invention relates to a Li-containing and / or Na-containing transition metal mixed oxide, and to the use of an organic additive for producing a transition metal carbonate as a precursor of an Li-containing and / or Na-containing transition metal mixed oxide.

A catalyst for the direct synthesis of acetic acid and ethanol from CO2 via a non-hydrogenation route, its preparation method, and its application are disclosed. This invention belongs to the field of catalyst technology and overcomes the shortcomings of existing acetic acid synthesis technologies. The solution involves using TiO2 nanotubes as the catalyst support, and the active component being a single metal Co or Pd, or a bimetallic composition of Co and Pd, with a loading of 3-7%. wt The catalyst is prepared by first using a hydrothermal method to prepare TiO2 nanotubes, and then using the TiO2 nanotubes as a carrier, impregnating, drying, and calcining to obtain the catalyst. When applied to a dual-channel fixed-bed step-by-step continuous reactor, the catalyst enables the one-step conversion of CO2 to ethanol and acetic acid via a non-hydrogenation route at low temperature and atmospheric pressure, avoiding the problem of insufficient hydrogen source in the CO2 hydrogenation route. The process of this invention is short, the conditions are mild, it does not require a high-energy-consuming syngas production step, the product composition is simple, and the subsequent separation energy consumption is low.

The invention belongs to the field of organic chemical synthesis, and particularly relates to a synthesis method of triaryl sulfonium salt, which comprises the following steps: (1) dissolving a catalyst: dissolving the catalyst in an organic solvent in a preparation kettle in advance to form a uniform solution; and (2) continuous feeding and reaction: enabling reactants thionyl chloride and an aromatic hydrocarbon derivative and the catalyst-containing solution obtained in the step (1) to pass through a continuous reactor at a controllable flow rate, firstly carrying out Friedel-Crafts acylation reaction in an all-solvent system, then heating to carry out addition reaction, and finally obtaining the triaryl sulfonium salt. According to the invention, the problem of solid-liquid non-uniformity is eliminated, and the reaction efficiency and reproducibility are improved; the reaction is fast and uniform, and local overheating and out-of-control risks are avoided.

The utility model provides a continuous device for synthesizing 2-chloro-1-(1-chlorocyclopropyl) ethanone. The continuous device for synthesizing 2-chloro-1-(1-chlorocyclopropyl) ethanone comprises a raw material continuous supply unit, a first continuous chlorination reaction unit, a ring-opening reaction unit, a ring-closing reaction unit and a second continuous chlorination reaction unit. According to the technical scheme provided by the utility model, through the continuous synthesis device, the continuous production of 2-chloro-1-(1-chlorocyclopropyl) ethanone can be realized, and the labor cost is reduced; the continuous reactor has a relatively large heat exchange area, reaction heat can be quickly removed, accurate temperature control is realized, and the reaction selectivity is high; a gas-liquid two-phase contact interface in the continuous reactor is large, the reaction rate is high, and process amplification is easy to carry out. According to the continuous device, each reaction unit and each auxiliary unit also realize automation, and the reaction conditions are stable, so that the quality of a product prepared by the continuous device is relatively stable and uniform.

The application discloses an Ag-MoO x A preparation method of a bimetallic catalyst, an Ag-MoO x A bimetallic catalyst and application, the preparation method comprises the following steps: after a mixture containing a molecular sieve, an alkali source, a silver source and a molybdenum source is impregnated, dried and calcined, the Ag-MoO x A bimetallic catalyst; wherein the impregnation comprises the following steps: the molecular sieve and the alkali source are first impregnated and treated, and then impregnated with a solution containing the silver source and the molybdenum source, or the molecular sieve, the silver source and the molybdenum source are first impregnated and treated, and then impregnated with the alkali source. The application is greatly improved in the production efficiency of 2-methylpropenol by being matched with a continuous reactor-fixed bed. Under the condition that hydrogen is used as a reducing agent and without a solvent, the conversion rate of methylpropenal on the bimetallic catalyst reaches 82%, the selectivity of 2-methylpropenol is 89%, and meanwhile, the catalyst can be stably operated for a longer time.

The invention belongs to the technical field of organic chemical synthesis, and provides a process for producing pyromellitic dianhydride by liquid-phase oxidation, which comprises the following steps: proportionally adding durene and acetic acid into a batching kettle, matching by using a catalyst, stirring and heating a liquid material to obtain the liquid material, and adding the liquid material into the batching kettle to obtain the pyromellitic dianhydride; when a liquid material is pumped into the micro-channel continuous reactor, the flow of the liquid material pumped into the micro-channel continuous reactor needs to be obtained, pumping peak-valley analysis is carried out according to the flow of the liquid material, a pumping peak time period and a pumping valley time period are screened out, and the change types of the pumping peak time period and the pumping valley time period are identified; according to the method, the oxygen introduction strategy is formulated, the gas introduction adjustment amount is obtained, and the oxygen introduction amount is dynamically adjusted, so that oxygen introduction and liquid material pumping are highly coordinated in the time dimension, and the problems of violent reaction fluctuation or incomplete reaction and the like caused by imbalance of the gas-liquid proportion are solved.

The invention relates to a continuous reaction kettle for producing full-water-soluble nitro silicon calcium magnesium tablets, and relates to the technical field of reaction kettles.The continuous reaction kettle comprises a kettle body, an overflow cylinder, a flow blocking plate, a first stirring assembly, a second stirring assembly, a mixing assembly and a third stirring assembly, and the first stirring assembly comprises a driving part, a stirring shaft, a stirring plate and a first transmission part; the second stirring assembly comprises a driving rod, a first stirring impeller and a second transmission part, the mixing assembly comprises a first telescopic rod, the third stirring assembly comprises a second stirring impeller and a third transmission part, and a spoiler slides under the driving of a stirring shaft. The sliding spoiler drives the stirring plate, the first stirring impeller, the first telescopic rod and the second stirring impeller to act, the stirring plate turns over the mixed liquid, the first stirring impeller comprehensively stirs the mixed liquid, the first telescopic rod enables the mixed liquid to be impacted and mixed, and the second stirring impeller further stirs the mixed liquid. The powder and liquid mixing device has the effect of improving the overall mixing uniformity of powder and liquid.

The application provides a synthesis method of hydroxyapatite with uniform and controllable size, wherein a calcium source reaction solution is mixed with a phosphorus source reaction solution, a reaction is carried out under stirring after pH adjustment, and a particle size adjusting agent and a charge interference agent are added after the reaction is completed, so that hydroxyapatite with controllable single crystal size and uniform particle size is obtained. The application has the beneficial effect that: hydroxyapatite is synthesized by using the reactor, the liquid flow rate and the rotation speed of the reactor have great influence on the formation of particles and the uniformity of particle size distribution, controllable single crystal size and uniform particle size of hydroxyapatite can be obtained by controlling parameters such as flow rate and rotation speed, and adding additives such as particle size adjusting agent and charge interference agent, and the back mixing process can promote the size uniformity of particles. In addition, the reactor is a large continuous reactor, which can continuously sample and obtain products at the same time, and has good effect on the preparation of large-scale hydroxyapatite with limited agglomeration.

This invention provides a glow plug ignition internal combustion continuous supercritical water oxidation device, comprising three parts: an ignition zone, a reaction zone, and a separation zone. The device utilizes the heat from the glow plug to ignite fuel in the inclined reaction tube, rapidly raising the temperature in the reaction zone to the required level, achieving rapid preheating and efficient degradation of organic wastewater. Furthermore, the fuel does not require a preheater during the entire heating process, reducing equipment investment and energy consumption. The lower end of the separation straight tube is equipped with a first electric ball valve, a salt discharge pipe, and a second electric ball valve. By adjusting the opening and closing of the first and second electric ball valves, automatic salt discharge can be achieved, preventing the generation of saline wastewater and facilitating continuous reactor operation and zero discharge, thus meeting the needs of industrial-scale treatment.

The Joule thermal flash continuous reactor comprises a reaction cavity, a segmented pulse energy supply cabinet, an atmosphere and tail gas unit and a material bearing and positioning mechanism, the reaction cavity is sequentially provided with a heat-resistant insulating layer and a conductive slow-release layer from inside to outside, and the graphite boat is provided with a containing cavity. The distance between the narrow-gap multi-electrode array electrode and the side wall of the placing cavity is adjustable, the segmented pulse energy supply cabinet is connected with the reaction cavity through a connecting wire, the segmented pulse energy supply cabinet comprises a solid-state switch matrix and a plurality of energy storage capacitor sections, the solid-state switch matrix is connected with the energy storage capacitor sections, and the energy storage capacitor sections are connected with the energy storage capacitor sections. The atmosphere and tail gas unit comprises a gas inlet structure, a tail gas side taking device and a tail gas adsorption device, the material bearing and positioning mechanism comprises a position sensor, a multi-boat conveying belt and a driving part, the multi-boat conveying belt penetrates through the reaction cavity, and the two ends of the multi-boat conveying belt are located outside the reaction cavity. The Joule thermal flash continuous reactor based on the graphite boat has the advantage that the current density in the graphite boat in the thickness direction is uniform.

The invention relates to the technical field of chemical equipment, in particular to a hydroxyacetonitrile continuous reactor which comprises a first-stage falling film reactor, a second-stage mixing reactor, a first-stage circulating pipeline and a second-stage circulating pipeline, after hydrocyanic acid mixed gas enters the first-stage falling film reactor, formaldehyde and first-stage circulating liquid enter the first-stage falling film reactor from the two sides of the top of the first-stage falling film reactor respectively, and then formaldehyde and second-stage circulating liquid enter the second-stage falling film reactor; uniform falling films are formed on the inner walls of a plurality of reaction flow guide pipes and react, and cooling water outside the pipes circulates to timely remove reaction heat; after the primary reaction, returning one part of the material to the top through a primary circulation pipeline for continuous reaction, and enabling the other part to enter a secondary mixing reactor; and in the second-stage mixing reactor, the residual hydrocyanic acid is further mixed and reacted with glycolonitrile returned by a second-stage circulating pipeline, part of the final product is extracted, and part of the final product is circulated back to a second-stage circulating material inlet. The system strengthens heat and mass transfer through a falling film structure, and ensures full reaction of raw materials through two-stage circulation, and the product quality is stable.

The utility model discloses a novel continuous reactor device which comprises a tubular reactor, a first feed pipe is communicated and connected with the top of the tubular reactor close to the left side, and second feed pipes are respectively communicated and connected with the bottom of the tubular reactor close to the left side and the right side. The top end of the first feeding pipe and the bottom ends of the two second feeding pipes are respectively communicated and connected with an SK mixer, a combined SK mixer is arranged in the tubular reactor, and a heat exchange medium inlet is communicated and connected to the left side, close to the bottom, of the tubular reactor. According to the technical scheme, through mutual cooperation of the tubular reactor, the SK mixer, the combined SK mixer and other components, adding and continuous production of various materials at different time can be achieved, the SK mixer set is connected in parallel in the tubular reactor, the solution mixing and reaction efficiency is higher, the heat exchange efficiency is higher, local temperature rise is avoided, and the production efficiency is improved. And the reaction heat can be effectively utilized to supply heat to the two-stage reaction.

The present invention discloses a glycine mixed crystal intermediate production method, and relates to the technical field of glycine production, the method comprises the following specific steps: raw material mixing and heating reaction: crushed solid chloroacetic acid, crushed liquid chloroacetic acid and recovered mother liquor are added into a continuous reaction kettle together, in the continuous reaction kettle, a reaction is performed for 2-4 h, the reaction temperature of the neutralization reaction stage is controlled in a low-temperature reaction zone, and after the neutralization reaction is completed, the reaction stage of generating glycine is entered. In the crystallization process, glycine and ammonium chloride are naturally saturated and separated out in the mother liquor to generate an intermediate, so that the operation steps and the use amount of methanol are reduced, and the crystallization process is continuously completed; meanwhile, the loss of urotropin in the reaction mother liquor is extremely small, the mother liquor can be recycled, and the mixture is put into the reaction kettle again after being mixed with new solid chloroacetic acid or liquid chloroacetic acid, so that the recovery rate of glycine is increased.

Continuous spatial atomic layer deposition is performed on a particulate substrate in a continuous reactor comprising a plurality of spatially separated, precursor dosing zones and a means for moving the particulate substrate spatially through the precursor dosing zones to apply an atomic layer deposition coating thereon. The precursor dosing zones may be used simultaneously.

The invention discloses a heavy raw material lightening continuous reaction device and a method thereof, multiple raw materials are mixed and then jointly catalytically cracked, the catalytic conversion efficiency in the process of producing low-carbon olefins is further improved, and the product selectivity and yield are improved; the device comprises a continuous reactor, a separator, a gas conveying line, a solid conveying line and a crude oil conveying line, the gas conveying line and the crude oil conveying line are respectively connected with the bottom end of the continuous reactor, the solid conveying line is connected with the middle end of the continuous reactor, and the output end of the continuous reactor is connected with the separator; according to the method, crude oil is preheated and then enters a continuous reactor through a crude oil conveying line, low-carbon alkane enters the continuous reactor through a gas conveying line, solid raw materials enter a phase reactor through a solid conveying line, a catalyst enters the continuous reactor through a catalyst conveying line, a reaction is carried out for 1-4 s at the temperature of 470-700 DEG C and the pressure of 0.1-0.5 Mpa, and then a reaction product is conveyed to a separator to be separated. A target product is obtained; belongs to the technical field of heavy oil treatment.