117 results about "Consecutive reaction" patented technology

The invention discloses a continuous reaction device and method for producing 2-amino-4-methylbenzothiazole, and belongs to the technical field of compound production. The invention relates to a continuous reaction device for producing 2-amino-4-methylbenzothiazole, which comprises a first-stage reaction kettle and further comprises a stirring mechanism arranged in the first-stage reaction kettle and used for stirring chlorine and a mixed solution in the first-stage reaction kettle; the driving mechanism is arranged at the top of the first-stage reaction kettle and is used for driving the stirring mechanism to perform stirring action in the first-stage reaction kettle; the chlorine injection mechanism is connected with the stirring mechanism; the air exhaust mechanism is arranged at the top of the first-stage reaction kettle and is connected with the driving mechanism; the multistage reaction kettles are adopted for continuous operation to eliminate downtime, so that the problem of low production efficiency caused by repeated heating and cooling due to the use of intermittent reaction kettles in the traditional process is solved, the chlorine utilization rate is improved, and the production and processing cost is effectively reduced.

The invention provides a preparation method of 2-pentyl-2-cyclopentenone, and belongs to the technical field of organic synthesis. The preparation method comprises the following steps: carrying out a first-stage isomerization reaction on 2-pentylidene cyclopentanone and a first composite catalyst in a first atmosphere to obtain an intermediate, carrying out a second-stage isomerization reaction on the intermediate and a second composite catalyst in a second atmosphere, and controlling the volume ratio of nitrogen to hydrogen in the first atmosphere and the second atmosphere to obtain the 2-pentylidene cyclopentanone. In the first-stage isomerization reaction, the conversion rate of converting 2-pentylidene cyclopentanone into 2-pentyl-2-cyclopentenone is increased, and in the second-stage isomerization reaction, the use amount of hydrogen in the second atmosphere is reduced, the temperature of the second-stage isomerization reaction is increased, generation of by-products is inhibited, and the yield of 2-pentylidene cyclopentanone is increased. Further, the yield and the purity of the 2-pentyl-2-cyclopentenone can be improved. According to the preparation method, the first-stage isomerization reaction and the second-stage isomerization reaction are continuous reactions, intermittent reactions are not needed, and the preparation method is more suitable for industrial application.

The invention belongs to the field of new energy NCM ternary precursors, and particularly relates to a preparation method of a doped and (or) coated ternary precursor. A continuous and intermittent dynamic switching process is created for the first time, main particles are generated through continuous reaction, and after the particle size reaches a preset value, an intermittent process mode is selectively switched for precise coating; the double reaction kettles are linked, the first reaction kettle is used for continuous doping reaction, and the second reaction kettle is used for selective intermittent coating, so that production of products of multiple specifications is supported while the productivity is improved. The method solves the technical bottlenecks of narrow particle size distribution, non-uniform coating and limited productivity in the traditional process, realizes effective preparation of a wide-distribution doped type or doped coating type precursor, remarkably reduces the production cost, and is suitable for the field of consumer electronic battery materials.

Provided is an alkane production method wherein a continuous reaction of an alcohol and hydrogen proceeds at a low reaction pressure, carbon reduction from the alcohol can be suppressed, and the conversion rate is excellent. This alkane production method for producing an alkane from a C8-22 alcohol comprises a step in which the alcohol and hydrogen are continuously reacted under the following conditions. (i) The reaction is carried out in the presence of a zeolite carrier supporting palladium, the reaction temperature is 180°C or higher, and the hydrogen pressure is 0 MPa to 0.7 MPa in terms of gauge pressure. (ii) The space velocity (SV) of the hydrogen relative to the volume of a catalyst in which the palladium is supported on the zeolite carrier is 1200 h–1 to 2400 h–1. (iii) The space velocity (SV) of the alcohol relative to the volume of the catalyst in which the palladium is supported on the zeolite carrier is 8 h–1. (iv) The zeolite carrier is of an H-beta type or an H-ZSM-5 type, has a molar ratio (SiO2 / AL2O3) between silica (SiO2) and alumina (AL2O3) of 23 to 27, and has a palladium support quantity of 0.1 mass% to 5 mass%.

The application provides a method for synthesizing an eplerenone intermediate N-1 by one-pot method, and belongs to the technical field of organic synthesis. The method is characterized in that: the eplerenone intermediate N-4 is dissolved in dichloromethane, a potassium carbonate aqueous solution and dibromohydantoin are added to perform an opening ring reaction; after the reaction is completed, hydrochloric acid is directly added to perform a rearrangement reaction; then water is separated and methanol is added in the organic layer to perform an ozonation reaction; then sodium sulfite is added to perform a reduction reaction; then hydrochloric acid is added to perform a methyl esterification reaction, so as to obtain the eplerenone intermediate N-1 crude product, and finally the eplerenone intermediate N-1 fine product is obtained through refining. The method realizes the one-pot synthesis of the eplerenone intermediate N-1 from the eplerenone intermediate N-4 through the continuous reactions of opening ring, rearrangement, ozonation, reduction and methyl esterification, and can avoid column chromatography purification, so that the method becomes a green chemical process route with greatly reduced organic solvent consumption and wastewater.

The invention discloses a continuous production process of 1, 3-dimethyl-2-imidazolinone, and relates to the technical field of chemical processes, the process takes ethylene urea, formic acid, paraformaldehyde and water as raw materials, and the whole-process continuous production is realized through the steps of material preparation, batching, continuous reaction and post-treatment. The method is characterized in that water is used as a solvent, the reaction temperature is 150-250 DEG C, the pressure is 1-8 MPa, and the purity of the rectified product is greater than or equal to 99.5%. The method overcomes the defects of insufficient reaction and high cost of the existing intermittent process, has the advantages of high conversion rate, few impurities, few three wastes, easiness in automation and the like, and is suitable for industrial large-scale production.

The utility model discloses a continuous reaction device for an inorganic binder curing material, and relates to the technical field of inorganic binders. The inorganic binder heating device comprises a base, an inorganic binder heating box is arranged on the base, a plurality of filter holes are formed in the outer side of the inorganic binder heating box, guide plates corresponding to the filter holes are arranged on the outer side of the inorganic binder heating box, and forming boxes corresponding to the guide plates are arranged on the base. And a collecting box is arranged at the bottom of the inner wall of the inorganic binder heating box body. Through the arrangement of the continuous impact assembly, the rotating rod can rotate to drive the rotating plate to rotate and incline and drive the continuous impact assembly to operate at the same time, the rotating plate in the rotating and inclining process can be impacted to generate vibration, and impurities in an inorganic binder rapidly slide into the collecting box through vibration of the rotating plate and the inclined slope. And the impurities can be completely removed without additional operation, so that the labor intensity is reduced.

The invention belongs to the technical field of fluorine-containing polymer production, and particularly relates to a fluorine-containing olefin continuous polymerization system and a working method. The fluorine-containing olefin continuous polymerization system comprises a monomer conveying unit, a solvent conveying unit, a mixer, a reaction kettle, an additive adding unit, a flash tank and a drying tower, wherein the monomer conveying unit and the solvent conveying unit are used for conveying a monomer and a solvent respectively, mixing the monomer and the solvent through the mixer and inputting the mixture into the reaction kettle from the bottom of the reaction kettle; the auxiliary agent adding unit is used for adding an auxiliary agent into the reaction kettle; the flash tank is communicated with the top of the reaction kettle and is used for receiving mother liquor in the reaction kettle, separating unreacted monomers and polymers in the mother liquor and respectively discharging the unreacted monomers and polymers into the monomer conveying unit and the drying tower; and the drying tower is used for drying and separating the polymer to obtain a product and a solvent. According to the fluorine-containing olefin continuous polymerization system disclosed by the invention, full-liquid-filled kettle type reaction is adopted, and no gas phase space exists in the reaction kettle, so that the accumulation of monomers is reduced, and the explosion risk is sharply reduced. During continuous reaction, the concentrations of fluorine-containing olefin, an initiator and the like in the reaction are fixed, and the reaction temperature, the reaction pressure and the retention time of materials are also fixed, so that the product quality of the polymer is constant and controllable.

The invention relates to the technical field of fluorination equipment, in particular to a continuous reaction device of a fluorocarbonic ester-based solvent, which comprises a reaction main body internally provided with a reaction cavity; the gas-solid premixing module is tangentially communicated with the bottom of the reaction cavity and is used for enabling the fluorine gas and the solid catalyst to enter the reaction cavity together after being fully mixed; the liquid distribution module is arranged at the top of the reaction cavity and uniformly distributes reaction liquid into the reaction cavity; and the heat exchange reaction module is arranged in the reaction cavity, is positioned below the liquid distribution module, and is used for guiding the mixed gas flow and the reaction liquid to be in full countercurrent contact and directly exchanging heat on a reaction interface. According to the continuous reaction device provided by the invention, three-phase reactants are guided to be uniformly distributed in the reaction cavity through the heat exchange reaction module and then are fully contacted and reacted, and heat in the reaction process is timely exchanged and guided out, so that normal continuous production is ensured.

The utility model discloses a pyrazole alcohol diazotization shunting type pipeline continuous reaction device, and relates to the technical field of reaction devices. The pyrazol alcohol diazotization flow-dividing type pipeline continuous reaction device comprises a micro-mixer, a first guide pipe and a second guide pipe are fixed to the two inlet ends of the micro-mixer respectively, first valves are installed on the first guide pipe and the second guide pipe respectively, a tubular reactor is fixed to the outlet end of the micro-mixer, and a reaction valve is fixed to the outlet end of the tubular reactor. A bottom plate is fixed at the bottom of the reaction valve, a cover body is mounted above the reaction valve, and a lifting assembly for lifting the cover body above the reaction valve is mounted above the bottom plate; according to the device, an anti-deposition structure is specially designed, so that the auger conveying piece can be driven by the sliding block to move and rotate along the sliding groove, raw materials are effectively prevented from being deposited at the bottom of the reaction valve, the problem of insufficient reaction caused by accumulation of the raw materials is solved, and the reaction efficiency and the product quality are further improved.

The invention provides application of a compound in preparation of an additive for olefin carbonyl synthesis reaction, and relates to the technical field of catalytic reaction. The compound provided by the invention is used as an auxiliary agent for olefin carbonyl synthesis reaction, can inhibit agglomeration and inactivation of a metal catalyst, increase the dispersity of a palladium metal catalyst, maintain the concentration of the metal catalyst and reduce the use cost of the catalyst in the olefin carbonyl synthesis reaction, and has the advantages of simple method operation, mild reaction conditions and high yield. The auxiliary agent is recycled in the continuous reaction device, the product is easy to separate, and large-scale industrial production can be realized.

The present application relates to fluorination equipment technical field, especially to a kind of fluorinated carbonate-based solvent's continuous reaction device, including reaction main body, inside has reaction cavity;Gas-solid premixing module is communicated with the bottom of reaction cavity tangentially, for making fluorine gas and solid catalyst fully mixed after jointly entering reaction cavity;Liquid distribution module is set in reaction cavity top, and evenly spreads reaction liquid in reaction cavity;Heat exchange reaction module is set in reaction cavity inside and located below liquid distribution module, guides mixed gas stream and reaction liquid to fully counter-current contact, while direct heat exchange is carried out in reaction interface.The continuous reaction device provided by the present application guides three-phase reactants to be evenly distributed in reaction cavity by heat exchange reaction module, then fully contacts reaction, and the heat of reaction process is promptly exchanged and exported, to ensure the normal progress of continuous production.

The application discloses a process for preparing 3-methyl-2-buten-1-al diisopentyl acetal by continuous reaction rectification. The process comprises the following steps: reacting and rectifying isopentenyl alcohol and isopentenyl aldehyde in a reaction rectification tower to prepare 3-methyl-2-buten-1-al diisopentyl acetal, characterized in that the content of 2-methyl-3-buten-2-al in the liquid phase of the third to fifth trays of the reaction rectification tower from bottom to top is less than or equal to 1 wt%. By the continuous reaction rectification process, the device can be stably operated for more than 7200 hours, and the economic benefit of the enterprise can be remarkably improved.

This invention discloses a continuous production process for ethyl methyl carbonate (EMC), belonging to the field of organic carbonate synthesis technology. It aims to solve the problems of low conversion rate, poor selectivity, difficulty in catalyst separation and recovery, high energy consumption, and difficulty in stably preparing electronic-grade products in traditional batch processes. This invention uses dimethyl carbonate and ethanol as raw materials, employing a continuous reactive distillation coupled with a multi-stage distillation integrated process. Under the action of a solid base catalyst, a continuous transesterification reaction is achieved, simultaneously completing the discharge of the target product, online catalyst circulation, continuous separation of light and heavy components, and product purification. By precisely controlling the raw material ratio, reaction temperature, pressure, reflux ratio, and residence time, the entire process can operate continuously and stably. This invention features strong process continuity, high ethanol conversion rate, high EMC selectivity and yield, recyclable catalyst, low energy and material consumption, and the obtained product purity can reach electronic grade. It is suitable for the production of lithium-ion battery electrolyte solvents and is easy to scale up industrially and manage continuously.

This invention relates to the field of p-chlorobenzaldehyde preparation technology and discloses a method for the continuous preparation of p-chlorobenzaldehyde. The method includes: dissolving p-chlorobenzyl alcohol in a first solvent to obtain a homogeneous solution A; dissolving an oxidant, a catalyst accelerant, and a catalyst in a second solvent to obtain a homogeneous solution B; and pumping homogeneous solutions A and B into a microchannel reactor for reaction. The continuous preparation method for p-chlorobenzaldehyde provided by this invention uses p-chlorobenzyl alcohol as a raw material and combines it with a microchannel reactor for one-step continuous reaction to prepare p-chlorobenzaldehyde. This method can improve reaction efficiency, shorten reaction time, and simultaneously achieve low reaction temperature, high product yield, and virtually no hydrochloric acid wastewater generation.

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.

The invention discloses continuous reaction mixing equipment for preparing an amino acid surfactant, and relates to the technical field of mixing equipment.The continuous reaction mixing equipment comprises an equipment body, a support is fixedly installed on one side of the top face of the equipment body, a fixing column is fixedly connected to the top end of the support, and the other end of the fixing column is fixedly connected with the surface of a lantern ring; a lantern ring is arranged on one side of the top surface of the equipment body, a reaction kettle is fixedly mounted on the lantern ring, a mixing box is arranged on the other side of the top surface of the equipment body, a liquid discharge pipe is fixedly connected to the rear side of the mixing box, and a control panel is fixedly mounted on the surface of the mixing box. The device is reasonable in structure, amino acid surfactants preliminarily mixed in the reaction kettle are conveniently input into the mixing box for further treatment through the material passing assembly, and then the amino acid surfactants in the reaction kettle are preliminarily mixed through the reaction assembly; and the re-mixing assembly can continuously mix the amino acid surfactants which are mixed preliminarily, so that the mixing effect is improved.

The present application relates to the technical field of organic synthesis, and particularly relates to a method for synthesizing 3-methyl-2-phenyl-2,3-dihydrobenzothiazine-4-ketone. A conventional method for synthesizing 3-methyl-2-phenyl-2,3-dihydrobenzothiazine-4-ketone generally uses anthranilic acid as a starting material, and needs to be subjected to six-step continuous reactions to obtain the product, and the reaction time is long, the yield is low, and the operation is complicated. In view of the above problems, the present application provides a method for synthesizing 3-methyl-2-phenyl-2,3-dihydrobenzothiazine-4-ketone, which uses 2-mercapto-N-methyl benzamide as a starting material, and is completed through one-step reaction, and the starting material and catalyst are easy to obtain, the operation is simple, the reaction is fast, the equipment requirement is low, the post-treatment is simple, and the yield is high.

The present invention relates to a continuous reaction method and a continuous reaction apparatus, the reaction steps including an input step, a mixing step, a reaction step, and an output step, in the input step, a first reactant and a second reactant are independently input, the first reactant and the second reactant cannot be mutually dissolved, and the first reactant and the second reactant cannot be mutually dissolved; in the mixing step, a first reactant and a second reactant are dispersed into fine particles and fully mixed, the first reactant is at least one of halogen atoms which can be different from each other, Y is one or more H, F, lower alkyl, lower alkoxy, phenoxy, nitrile or trifluoromethyl, m is 0 or an integer of 1-5, and n is an integer of 1-2; the second reactant is an aqueous solution containing a catalyst. Compared with a traditional intermittent process, the method has the advantages that the reaction time is shortened from more than 30 hours to about 8 hours, the reactant conversion rate can reach 99.5% or above, the product selectivity is greater than 98%, byproducts are few, and the continuous process is high in safety.

The invention discloses a continuous reaction system and method for co-producing solid and liquid sodium ethyl xanthate, and relates to the technical field of sodium ethyl xanthate production. The system comprises a reaction kettle, a stirring motor, a raw material discharging pipe, an alkali liquor discharging pipe, a discharging pipe, a circulating liquid outlet pipeline, a centrifugal machine, a drying machine, a xanthate storage tank, a plurality of groups of control valves and a plurality of groups of backflow pipelines, which form a closed-loop reaction and separation system. The method comprises the following steps: feeding ethanol, carbon disulfide and caustic soda liquid with the concentration of more than or equal to 40% according to a molar ratio of 1: (0.9-1.2): (1.0-1.2), carrying out an initial reaction at 30-36 DEG C for 2.5-4.5 h, carrying out circulating separation, mother liquor recycling and continuous alkali supplementation to realize continuous production, and simultaneously producing liquid sodium ethyl xanthate and solid xanthate obtained by drying at 40-60 DEG C for 0.5-2.5 h. According to the method, reaction balance is promoted through high-concentration alkali, the raw material conversion rate is increased, the problem of solid precipitation is solved through the process of reaction-separation-recycling, product diversification is achieved, batch reaction is upgraded to continuous production, the productivity and stability are improved, and different market requirements are met.

The application discloses a mixed solid catalyst and application thereof in preparation of p-aminophenyl alkyl ether, wherein the mixed solid catalyst is composed of an activated carbon supported noble metal catalyst and a perfluorosulfonic acid resin with a mass ratio of 1:1-10, and the activated carbon supported noble metal catalyst is one or more than two of Pt / C, Pd / C and Ir / C; the mixed solid catalyst system prepared according to the application realizes continuous reaction and synthesis of p-aminophenyl alkyl ether by using nitrobenzene and an alcohol solution as raw materials, and has its own unique advantages.

The present invention provides a catalyst for synthesizing a cyclic carbonate and a preparation method and use thereof. A diamine compound X, a salicylaldehyde-containing compound and a metal source M are subjected to reaction, and then added with a phenothiazine compound Y for continuous reaction to obtain a phenothiazine metal Schiff base catalyst. The formation of phenothiazine free radicals by phenothiazine compounds with a central metal can protect the central metal in the course of reaction and inhibit inactivation caused by the self-polymerization of the central meta, thus improving the activity and stability of a catalyst. Phenothiazine compounds can be present as a polymerization inhibitor to inhibit the generation of by-products such as polycarbonates and polyethylene glycol and enhance the selectivity of the catalyst during the reaction. The phenothiazine compounds are alkaline and can adsorb and activate carbon dioxide during reaction, which helps to improve the reaction efficiency. The phenothiazine metal Schiff base catalyst prepared in the present invention has high activity, strong stability and good selectivity and thus, can achieve the efficient catalyzed synthesis of cyclic carbonates under mild conditions.

The utility model relates to an independent / continuous reaction device for vegetable protein feed liquid. The independent / continuous reaction device comprises a feeding system, a reaction tank body and a discharging system, the feeding system comprises a feeding pump, a feeding valve and a flow meter which are arranged on a feeding pipe; an overflow plate structure is arranged in the reaction tank body, the reaction tank body is divided into a plurality of reaction cavities which are communicated in sequence through the overflow plate structure, each reaction cavity is connected with the feeding system through a feeding pipe, a tank inlet valve is arranged on the feeding pipe connected with each reaction cavity, a liquid level meter is arranged in each reaction cavity, and the liquid level meter is connected with the liquid level meter. A tank bottom valve is arranged at the bottom of each reaction cavity; the discharging system comprises a discharging valve and a discharging pump which are arranged on a discharging pipe, and the discharging system is connected with the tank bottom valve through the discharging pipe. The utility model relates to a device which can be used for independent reaction of vegetable protein feed liquid and can also be used for continuous reaction.

The invention provides a continuous reaction preparation method of a perovskite film, which comprises the following steps: 1) preparing a first precursor solution, and forming a first precursor layer on a substrate through a liquid phase deposition mode, the first precursor solution comprising lead-containing halide; (2) under the condition that the first precursor layer is still in a low crystallization state or is not completely crystallized and still keeps reaction activity, a second precursor solution is introduced, and the second precursor solution comprises at least two organic halogenated ammonium salts; and 3) carrying out thermal annealing treatment on the film layer after the second precursor solution is introduced, so that the first precursor layer reacts with the second precursor solution, and the perovskite thin film is formed through conversion. According to the preparation method of the perovskite thin film provided by the invention, through the continuous reaction, uniform film formation and efficient conversion of the perovskite thin film can be realized under the condition that an independent drying step is not introduced, the interface defect density is reduced, and the crystallization quality and photoelectric property of the thin film are improved.

Provided is a method for preparing an ester-based composition using a continuous reaction system in which a plurality of reactors are connected in series, wherein the heat transfer performance, reactor productivity, and total reactor productivity can be improved by controlling operating conditions.

The invention provides a method for preparing alkenyl ester containing double bonds through continuous reactive distillation, which comprises the following steps: S1) mixing carboxylic acid containing alkenyl and a polymerization inhibitor to obtain a raw material mixed solution; s2) feeding the raw material mixed solution from the upper part of continuous reaction rectification equipment, feeding alcohol steam from the lower part of the continuous reaction rectification equipment, and enabling the raw material mixed solution to flow from top to bottom to react with the alcohol steam under the action of a supported acidic solid catalyst; and S3) sequentially carrying out alkali washing and water washing on the crude ester obtained by the reaction, and then refining to obtain alkenyl ester containing double bonds. The invention further provides a system for preparing alkenyl ester containing double bonds through continuous reactive distillation. According to the method for preparing the alkenyl ester containing the double bonds through continuous reactive distillation, the reaction efficiency of the alkenyl-containing carboxylic acid and the purity of the alkenyl ester containing the double bonds are improved.

The invention relates to a (S)-3-halo-5-substituted pyridine derivative and an asymmetric catalytic synthesis method thereof.The compound has a specific chiral center structure and can be used as an important medical intermediate, and the preparation process adopts three-step continuous reaction: firstly, performing Grignard reaction under a low-temperature condition to construct an acetyl framework; then, high-selectivity asymmetric reduction is realized by using a ruthenium catalyst with a specific configuration; and finally, carrying out mild methylation reaction to obtain a target product. By optimizing the catalyst system, the reaction temperature and the material ratio, the optical purity and the reaction yield of the product are remarkably improved, and meanwhile, the common side reaction problem in the traditional process is avoided. The method is easy and convenient to operate, mild in condition and suitable for industrial production, and an efficient and reliable synthesis path is provided for preparation of chiral drug intermediates.

The invention provides a high temperature resistant feruloyl esterase and an application thereof. The feruloyl esterase wild type has a remarkable high-temperature-resistant characteristic and still shows relatively high thermal stability under the condition of 95 DEG C, and the thermal inactivation half-life period of the feruloyl esterase wild type can reach 5h. On the basis, after the feruloyl esterase mutant obtained through structural rationality modification continuously reacts for 5 h at the temperature of 75 DEG C, floccule precipitation is not observed, and stable catalytic activity is kept. In the application, the feruloyl esterase mutant disclosed by the invention and commercial xylanase have a synergistic effect, so that the release of bound ferulic acid in starch-removed wheat bran can be effectively promoted. The invention provides a novel enzymology tool for efficiently and quickly releasing the plant-derived ferulic acid under a high-temperature condition.

The application provides a modified polyhydroxyalkanoate material, which comprises polyhydroxyalkanoate segments and polyurethane segments, wherein the polyurethane segments are obtained by the reaction of a melting agent and polyhydroxyalkanoate. The melt strength of PHA is effectively improved, and the mechanical property is enhanced by continuous reaction extrusion. The polyhydroxyalkanoate is modified by using an isocyanate melting agent and a high-performance catalyst, so that the polymer segments are crosslinked, the crystallinity of the modified PHA is effectively reduced, and the mechanical property, elongation and breaking energy of the modified PHA are significantly increased.

The present invention provides a xanthate production system, the xanthate production system comprises an alkali adding unit, a reaction unit and a liquid storage unit, the reaction unit comprises a main reaction kettle and a continuous reaction assembly, the continuous reaction assembly comprises 1-n reaction kettles, the reaction kettles 1-n are sequentially connected, and the main reaction kettle is communicated with the reaction kettle 1; a circulating cooling device is arranged on a pipeline for communicating the main reaction kettle and the reaction kettle 1, the circulating cooling device comprises a circulating pump and a circulating cooler, the circulating pump is communicated with a discharge port of the main reaction kettle and a feed port of the circulating cooler, a discharge port of the circulating cooler is communicated with the reaction kettle 1, and a discharge port of the circulating cooler is communicated with the main reaction kettle; the main reaction kettle 1 to the reaction kettle n are provided with stirring devices; the liquid storage unit comprises a carbon disulfide storage tank, an alcohol storage tank and a solvent storage tank; the alkali adding unit, the carbon disulfide storage tank, the alcohol storage tank and the solvent storage tank are respectively communicated with the main reaction kettle; and the solvent storage tank is communicated with the reaction kettles 1-n.