897 results about "Nitrile" patented technology

The invention relates to the technical field of organic synthesis, and discloses a preparation method of bromo-pyrrole nitrile. The method comprises the following steps: (1) mixing p-chlorophenylglycine, acetonitrile, trifluoroacetic acid and a catalyst, then dropwise adding acyl chloride and carrying out acylation reaction, and after the reaction is completed, purging with an inert gas; (2) under the inert gas, mixing the mixture obtained in the step (1) with inorganic salt, then dropwise adding 2-chloroacrylonitrile, carrying out cyclization reaction, and separating a liquid phase from the obtained mixture; and (3) under the inert gas, mixing the liquid phase obtained in the step (2), hydrobromic acid and hydrogen peroxide, carrying out a bromination reaction, then extracting with acetonitrile to obtain an acetonitrile layer, then removing the acetonitrile, and then carrying out cooling crystallization to obtain the bromo-pyrrolenitrile. According to the technical scheme, the reaction yield is high, different solvents do not need to be frequently replaced, and the solvents can be recycled.

The invention discloses a preparation device and a preparation process of high-performance carboxylic butyronitrile latex, and relates to the technical field of carboxylic butyronitrile latex preparation.The preparation device comprises a reaction kettle, a feeding pipe is fixedly installed at the top of the reaction kettle, a motor is fixedly installed at the top of the reaction kettle, and a discharging pipe is fixedly installed at the bottom of the reaction kettle; a spiral heating pipe is arranged in the reaction kettle; the anti-adhesion device comprises a reciprocating lead screw, a threaded block, a fixed rod, an elastic telescopic rod, an arc-shaped plate, a connecting frame, a short rod, a rotating plate, a limiting block, a convex block and a groove, the reciprocating lead screw is driven to rotate through rotation of the motor, and the reciprocating lead screw rotates to drive the threaded block to reciprocate up and down; the threaded block reciprocates up and down to drive the elastic telescopic rod to reciprocate up and down, the elastic telescopic rod reciprocates up and down, and the arc-shaped plate reciprocates up and down, so that raw materials are prevented from being attached to the inner wall of the reaction kettle to form a thick layer, and the heating effect of the spiral heating pipe on carboxyl butyronitrile latex in the reaction kettle is affected.

The invention discloses a treatment process of high-nitrile-content wastewater, and belongs to the technical field of wastewater treatment. The method comprises the following steps: (1) pretreatment: adding an alkaline substance into the high-nitrile-content wastewater to adjust the pH value of the wastewater to 9-12, and adding sodium percarbonate for reaction to obtain pretreated wastewater; and (2) sequentially treating the pretreated wastewater through an A / A / O process and a biological filter EBF, and discharging after reaching the standard. According to the treatment process, the treatment cost of the high-nitrile-content wastewater can be effectively reduced, the content of nitrile compounds in the wastewater can be rapidly reduced, the biodegradability of the wastewater can be remarkably improved, and the wastewater can be discharged after reaching the standard.

The present invention relates to a method and an apparatus for producing nitrile with controlled spray liquid input pressure. According to the manufacturing method, spraying liquid can be atomized, the contact area with ammonia is increased, and the mass transfer efficiency is improved. The present invention relates to a method for producing nitrile, comprising a step (referred to as a reaction step) for producing a nitrile-containing reaction product by subjecting a hydrocarbon raw material to an ammoxidation reaction, and a step (referred to as a cooling step) for cooling the reaction product by spraying a spray liquid onto the reaction product by means of a spraying device, the spraying device comprises a spraying liquid inlet, a first spraying pipe in fluid communication with the spraying liquid inlet, and a plurality of second spraying pipes which are in fluid communication with the first spraying pipe, are perpendicular to the first spraying pipe and extend towards the two sides of the first spraying pipe. The first spraying pipe is communicated with the first spraying pipe through fluid, the second spraying pipe is communicated with the second spraying pipe through fluid, the third spraying pipes are communicated with the second spraying pipe through fluid and extend towards the two sides of the second spraying pipe perpendicular to the second spraying pipe, the nozzles are located at the tail ends of the third spraying pipes and communicated with the third spraying pipes through fluid, and in the cooling step, the spraying liquid input pressure of a spraying liquid inlet is controlled to be 0.06-1.00 MPaG.

The present invention relates to a process for preparing lithium bis(fluorosulfonyl)imide, comprising the following steps of: contacting of bis(fluorosulfonyl)imide with a lithium base in a solvent selected from carbonates, ethers and nitriles, to obtain a mixture comprising lithium bis(fluorosulfonyl)imide and water; diafiltration of the mixture on a nanofiltration membrane so as to obtain, firstly, a concentrate enriched in lithium bis(fluorosulfonyl)imide and depleted in water and, secondly, a permeate depleted in lithium bis(fluorosulfonyl)imide and enriched in water. The present invention also relates to a process for preparing an Li-ion battery electrolyte.

The invention relates to the technical field of sodium batteries, in particular to an electrolyte and a sodium battery containing the same. According to the electrolyte disclosed by the invention, the traditional solvents such as esters, sulfones and nitriles are abandoned, the sodium salt is mixed with one or more of the siloxane organic solvent, the fluorinated solvent or the ether organic solvent with a specific structure to form the electrolyte with a weak solvation structure, and additional additives do not need to be added; the method can be suitable for a sodium battery without a negative electrode (or a sodium metal negative electrode), stable operation is promoted, and the cycle performance is improved; and the electrolyte is simple in preparation process and is beneficial to promoting the industrial development of the sodium battery.

Provided is a wastewater purification method, the method including: supplying a first mixed stream, in which an acid component and wastewater including water, a nitrile-based monomer, and ammonia are mixed, to a first column; recovering the nitrile-based monomer from an upper discharge stream from the first column; supplying a second mixed stream, in which a lower discharge stream from the first column and a base component are mixed, to a second column; and recovering the ammonia from an upper discharge stream from the second column and separating purified wastewater.

The embodiment of the invention relates to an electrolyte of a high-voltage lithium ion battery and the lithium ion battery, and belongs to the technical field of lithium ion batteries. The electrolyte comprises an organic solvent, a lithium salt and an additive, the additive comprises a cyclotrisiloxane additive and an alkene nitrile additive; the structural formula of the cyclotrisiloxane additive is # imgabs 0 # olefinic nitrile additive is # imgabs 1 #. The electrolyte disclosed by the invention contains the olefinic nitrile additive, and the olefinic nitrile additive can be subjected to oxidative decomposition reaction prior to a solvent, so that a uniform and compact CEI film containing an element B is formed on the surface of the positive electrode material, and the positive electrode material is protected; the cyano group contained in the alkene nitrile additive can be adsorbed on the surface of the positive electrode material, and forms stable complexation with positive electrode metal ions, so that the dissolution of the positive electrode metal ions is inhibited, the side reaction of the electrolyte is slowed down, and the cycle life of the high-voltage lithium ion battery is effectively prolonged.

A carboxylic acid-modified nitrile-based copolymer latex includes a carboxylic acid-modified nitrile-based copolymer including: 65.5 wt % to 82.5 wt % of a conjugated diene-based monomer-derived unit, 15 wt % to 30 wt % of an ethylenic unsaturated nitrile-based monomer-derived unit, and 2.5 wt % to 4.5 wt % of an ethylenic unsaturated acid monomer-derived unit, wherein the carboxylic acid-modified nitrile-based copolymer latex satisfies General Formula 1:1.0 mm2 / s≤CV0≤3.0 mm2 / s  [General Formula 1]wherein CV0 represents a capillary viscosity of the carboxylic acid-modified nitrile-based copolymer latex which is measured in a swollen state in a methyl ethyl ketone solvent.

The invention relates to an absorption device with a gas cavity and a manufacturing method of nitrile. According to the absorption device, gas-phase ammonia can be uniformly dispersed on the cross section of the tower, and the ammonia absorption efficiency can be improved. The absorption device comprises a shell, a gas inlet and a spraying device arranged in the shell; the spraying device comprises a spraying liquid inlet, a first spraying pipe in fluid communication with the spraying liquid inlet, and a plurality of second spraying pipes which are in fluid communication with the first spraying pipe, are perpendicular to the first spraying pipe and extend towards the two sides of the first spraying pipe. The spraying device comprises a second spraying pipe, a plurality of third spraying pipes which are in fluid communication with the second spraying pipe, are perpendicular to the second spraying pipe and extend towards the two sides of the second spraying pipe, and nozzles which are located at the tail ends of the third spraying pipes and are in fluid communication with the third spraying pipes, and the gas inlet is located below the spraying device in the direction of the central axis of the absorption device; and the vertical distance between the gas inlet and the spraying liquid inlet of the spraying device is 800-6000 mm.

The invention relates to a supergravity adiponitrile production system and method, the system comprises a supergravity nitrile reactor, a separation tower, a semi-nitrile evaporator and a refining device, the middle part of the supergravity nitrile reactor is communicated with the lower part of the separation tower through a main pipeline, and the top of the supergravity nitrile reactor is communicated with a main ammonia gas pipeline; the top of the separation tower is respectively communicated with an ammonia recovery pipeline and a water recovery pipeline, and the upper part of the separation tower is communicated with the refining device through a pipeline; and the top of the semi-nitrile evaporator is respectively communicated with the bottom of the separation tower, the main pipeline and the main ammonia gas pipeline through pipelines. The reactor has the beneficial effects that the characteristics of structure, technology and the like of the supergravity reactor are utilized, the reverse concentration gradient of ammonia gas and molten adipic acid is formed in the radial direction of the rotor from inside to outside, the gas-liquid contact specific area is increased, the mass transfer driving force is increased, the reaction rate is increased, reaction products are separated out in the reaction process, and the reaction is accelerated and pushed.

The invention belongs to the field of shape memory of high polymer materials, and particularly relates to an amino side chain cross-linked shape memory polyarylene ether nitrile composite material as well as a preparation method and application of the amino side chain cross-linked shape memory polyarylene ether nitrile composite material. The preparation method of the composite material comprises the following steps: in an inert gas atmosphere, enabling a monomer containing a bisphenol group, 2, 2-bis (3-amino-4-hydroxyphenyl) propane, a water-carrying agent, an organic solvent, 2, 6-dihalobenzonitrile and a salt-forming agent to form a reaction system, so as to prepare a polyarylene ether nitrile copolymer with an amino side chain; and adding the obtained poly (arylene ether nitrile) copolymer and a monomer containing a terminal carboxyl group into an N, N-dimethylformamide solvent, adding a dehydrating agent, uniformly stirring to obtain a blend, stirring at 40-60 DEG C to enable the amino group and the carboxyl group to be subjected to dehydration, polycondensation and cross-linking, and synthesizing the shape memory poly (arylene ether nitrile) composite material with amino side chain cross-linking. The composite material has good mechanical properties and thermal stability, and also has a toughening function.

The invention discloses an ionic liquid-based electrolyte, a wide-temperature-range high-voltage supercapacitor and application of the wide-temperature-range high-voltage supercapacitor. The wide-temperature-range high-voltage supercapacitor comprises a eutectic ionic liquid system and an organic solvent, the eutectic ionic liquid system comprises at least two ionic liquids; the ionic liquid comprises cations and anions; the positive ions are selected from at least one of pyrrolidinyl positive ions, piperidinyl positive ions, imidazolyl positive ions and quaternary ammonium positive ions containing different side chains; the anion is selected from at least one of tetrafluoroborate, hexafluorophosphate, bis (trifluoromethylsulfonyl imine), bis (fluorosulfonyl imine) and tetracyanoborate; the organic solvent comprises at least one of fluorinated carbonic ester, fluorinated carboxylic ester, sulfones, ethers and nitriles. The supercapacitor based on the ionic liquid-based electrolyte can stably operate in a wide temperature range, so that the wide-temperature-range high-voltage supercapacitor can be suitable for an extreme working environment, and high energy density and power density are achieved.

The invention relates to a sodium ion battery and a nitrile-based electrolyte thereof. The electrolyte comprises: a solvent formed by fluoroethylene carbonate and at least one selected from the group consisting of dinitrile, 3-methoxypropionitrile, isobutyronitrile, valeronitrile, ethylene glycol bis (propionitrile) ether and 4-cyano tetrahydropyran, wherein the volume fraction of fluoroethylene carbonate is 5-20%; and at least one sodium salt selected from the group consisting of sodium hexafluorophosphate, sodium trifluoromethanesulfonate, bis (trifluoromethylsulfonyl) imide sodium and bis (fluorosulfonyl) imide sodium, with a concentration of 2.0-4.0 mol L <-1 >. The electrolyte provided by the invention can simultaneously stabilize an interface between a positive electrode and a negative electrode, and has reasonable ionic conductivity and high electrochemical stability.

The invention relates to a method for preparing porous carbon based on synchronous synthesis of nitrile resin / graphene nanosheets and a porous carbon material, synthesis of nitrile resin and dispersion of graphene nanosheets are synchronously realized by means of a ball milling process, the synthesized nitrile resin is used as a carbon source, the graphene nanosheets are used as conductive reinforcements, and the porous carbon material is prepared. According to a certain component proportion, the nitrile resin doped graphene nanosheet porous carbon is prepared according to a certain heat treatment procedure. Based on synchronous synthesis of the nitrile resin / graphene nanosheets, functionalized utilization of nitrile resin and graphene is realized; the high carbon yield of the nitrile resin and the high conductivity of the graphene are utilized to improve the electrochemical performance of the prepared porous carbon. The obtained nitrile resin / graphene porous carbon has excellent electrochemical performance, is synthesized in one pot, not only integrates and optimizes the technological process, but also has the effect of '1 + 1 > 2', and has industrial application prospects.

The present invention relates to a method for preparing lithium bis(fluorosulfonyl)imide, the method comprising the steps of: contacting the bis(fluorosulfonyl)imide with a lithium base in a solvent selected from carbonates, ethers, and nitriles to obtain a mixture comprising lithium bis(fluorosulfonyl)imide and water; Diafiltering the mixture through a nanofiltration membrane to obtain first a lithium bis(fluorosulfonyl)imide-enriched, water-depleted concentrate and then a lithium bis(fluorosulfonyl)imide-depleted, water-enriched permeate. The present invention also relates to a method for producing an electrolyte for a Li-ion battery.

The invention relates to the technical field of chemical fibers, and discloses a low-thermal-conductivity anti-ultraviolet fiber, a preparation method and application of the low-thermal-conductivity anti-ultraviolet fiber to a light-shading and heat-shielding fabric. The preparation method of the low-thermal-conductivity anti-ultraviolet fiber comprises the following steps: carrying out surface modification and functionalization treatment on a porous zinc oxide nanosheet to obtain a functionalized zinc oxide nanosheet; performing in-situ growth of cobalt borate on the surface of the functionalized zinc oxide nanosheet to obtain a composite nanomaterial; polyacrylonitrile, N, N-dimethylformamide and the composite nanomaterial are mixed, and a skin layer spinning solution is obtained; mixing the modified cellulose-based aerogel powder and N, N-dimethylformamide to obtain a core layer spinning solution; spinning the skin layer spinning solution and the core layer spinning solution to obtain polyacrylonitrile / aerogel composite fibers; the polyacrylonitrile / aerogel composite fiber is modified by diethylenetriamine, and an intermediate product is grafted to obtain the low-thermal-conductivity anti-ultraviolet fiber. The low-thermal-conductivity anti-ultraviolet fiber disclosed by the invention is low in thermal conductivity, good in anti-ultraviolet and flame-retardant effects and excellent in mechanical property.

The invention discloses a low-temperature electrolyte as well as a preparation method and application thereof, belongs to the technical field of battery electrolytes, and solves the problem of non-ideal battery performance in a low-temperature environment due to non-ideal compatibility of linear carboxylic ester and nitrile solvents and graphite in a lithium ion battery electrolyte in the prior art. The low-temperature electrolyte disclosed by the invention comprises the following components: electrolyte solute lithium salt, an organic solvent, an electrolyte additive and 3-fluorotoluene, wherein the organic solvent is a mixture of linear carboxylic ester and nitriles in a volume ratio of 1: (0.25-4). According to the electrolyte provided by the invention, the reversible charge-discharge performance of the lithium ion battery in a low-temperature environment is effectively improved.

The present invention provides a method for producing an aromatic nitrile compound, the method comprising a dehydration reaction wherein a desired compound can be selectively obtained with high yield while suppressing the generation of by-products during the regeneration of an aromatic amide compound into the corresponding aromatic nitrile compound. In addition, the present invention realizes a method for efficiently producing a carbonate ester by applying the abovementioned production method to a method for producing a carbonate ester. The above are achieved by means of a method for producing an aromatic nitrile compound involving a dehydration reaction wherein an aromatic amide compound is dehydrated, the method having a contact step for bringing the aromatic amide compound into contact with a catalyst in a gas phase during the dehydration reaction.

The invention provides a fluorine-containing thiophene compound, a preparation method thereof and an electrolyte. The structural formula of the fluorine-containing thiophene compound is as shown in formula I, R1 is fluorine or fluorosulfonyl, R2 is hydrogen, halogen, nitrile group, nitryl, C1-C6 alkyl or C1-C6 halogenated alkyl, and R3 is hydrogen, C1-C6 alkyl or C1-C6 halogenated alkyl. The fluorine-containing thiophene compound is improved on the basis of a conventional thiophene compound, fluorine or fluorosulfonyl is introduced, the defects of the conventional thiophene compound can be overcome, and when the fluorine-containing thiophene compound is used as an additive, the decomposition and oxidation reaction of an electrolyte in a high-pressure and high-temperature system can be reduced, so that the electrochemical performance of a lithium ion battery at high temperature and high pressure is improved.

An elastomeric article is formed from a blend of nitrile rubber and polychloroprene rubber. The elastomeric article can be a glove, such as a medical exam glove. The elastomeric article is softer than a conventional nitrile elastomeric article. The elastomeric article is formed from a blended rubber latex emulsion of nitrile and polychloroprene. The blended rubber latex emulsion may be free of sulfur and vulcanization accelerators.

Disclosed in the present invention are a composite oxide support, a supported catalyst, and a hydrogenated nitrile butadiene rubber and a preparation method therefor and a use thereof. The composite oxide support comprises: SiO2 and a group IVB metal oxide, wherein the group IVB metal oxide is TiO2 and / or ZrO2, and the composite oxide support has the surface characteristics that three characteristic peaks are present in the infrared spectrum within the range of 610-720 cm-1 and another three characteristic peaks are present in the infrared spectrum within the range of 2840-2970 cm-1. The composite oxide support of the present invention can significantly improve the dispersion of active components on the surface of a catalyst and significantly improve the hydrogenation activity of the catalyst. The supported catalyst of the present invention is used in combination with a homogeneous catalyst for hydrogenation saturation of a high molecular polymer material at a low temperature and pressure, and the resulting high molecular polymer (especially hydrogenated nitrile butadiene rubber) product has a high degree of hydrogenation. In addition, the supported catalyst of the present invention can be reused multiple times, thereby improving the recyclability of the catalyst, reducing the preparation costs.

The invention provides an in-situ polymerization modified polymer solid electrolyte, a preparation method thereof, a diaphragm-free lithium secondary battery and a lithium secondary battery. The polymer solid electrolyte comprises a nitrile polymer as a component (A), a polymer matrix as a component (B) and a lithium salt as a component (C), wherein the component (A) nitrile polymer is derived from an unsaturated nitrile monomer; the unsaturated nitrile monomer comprises an unsaturated aliphatic compound with a cyano group substitution; the unsaturated aliphatic compound contains more than three carbon atoms; the unsaturated nitrile monomer contains at least one unsaturated group, and the component (A) is polymerized in situ in the solid electrolyte. According to the invention, unsaturated nitrile monomers with specific structures are introduced into a high polymer material, and the unsaturated nitrile monomers are polymerized in the high polymer material in situ. Through the nitrile polymer with the specific structure, the ionic conductivity and the mechanical property of the polymer solid electrolyte are improved, and the electrochemical window of the polymer solid electrolyte is widened.

The invention relates to the technical field of high polymer materials, and discloses a synthesis method of low-chlorine polyphenylene sulfide nitrile, which comprises the following steps: carrying out pressurized prepolymerization reaction on a sodium sulfide solution and p-dichlorobenzene to obtain a first prepolymerization reaction product; carrying out copolymerization prepolymerization reaction on the first prepolymerization reaction product and 2, 6-dichlorobenzonitrile to obtain a second prepolymerization reaction product; carrying out heating polymerization reaction on the second prepolymerization reaction product and benzyl chloride to obtain a heating polymerization reaction product; and raising the temperature of the polymerization reaction product, and carrying out phase separation to obtain the low-chlorine polyphenylene sulfide nitrile. Under the condition of no auxiliary agent, the polymerization process of inert gas pressurization and phase separation is adopted, benzyl chloride is applied to adjust the end group, low-chlorine high-molecular-weight polyphenylene sulfide nitrile can be obtained in a short time, the production efficiency of synthesizing polyphenylene sulfide nitrile can be improved, the purification process of byproduct sodium chloride is shortened, auxiliary agent recovery is omitted, and the production cost is reduced. The engineering construction investment is reduced, and the production cost for manufacturing the polyphenylene sulfide nitrile is greatly reduced.

An elastomeric article is formed from a blend of nitrile rubber and polychloroprene rubber. The elastomeric article can be a glove, such as a medical exam glove. The elastomeric article is softer than a conventional nitrile elastomeric article. The elastomeric article is formed from a blended rubber latex emulsion of nitrile and polychloroprene. The blended rubber latex emulsion may be free of sulfur and vulcanization accelerators.

The invention relates to the technical field of polyphenylene sulfide, and discloses a preparation method of a high-temperature-resistant high-thermal-conductivity PPS composite material, 65-80 parts by weight of polyphenylene sulfide and 20-35 parts by weight of thioether polyarylene ether nitrile grafted graphene are added into a twin-screw extruder, melt blending and granulation are performed, and the high-temperature-resistant high-thermal-conductivity PPS composite material is obtained. After the surface of the graphene is grafted and coated with a thioether polyarylene ether nitrile molecular chain, the graphene is better in dispersity and higher in compatibility with polyphenylene sulfide, the graphene is uniformly dispersed in the polyarylene ether nitrile-polyphenylene sulfide alloy composite material, a better reinforcing effect is achieved, the tensile strength, the bending strength, the thermal weight loss temperature and the heat conductivity coefficient of the composite material are improved, and the service life of the composite material is prolonged. Higher mechanical property, high temperature resistance and heat-conducting property are shown. And moreover, the anti-creeping paint shows a relatively high anti-creeping tracking index CTI value and has good anti-creeping performance.

The invention discloses a method for synthesizing an organic nitrile compound by using Pickering emulsion to electrocatalyze aldoxime dehydration, which comprises the following steps: ultrasonically dispersing carbon nanotubes in water, dissolving aldoxime organic matters in cyclohexane, mixing an aqueous solution with a cyclohexane solution, and forming the Pickering emulsion under the action of a homogenizer with the rotating speed of more than 1500rpm; then injecting a certain amount of nitrogen dioxide gas, continuously electrolyzing for 12 hours within the voltage range of-0.3 VRHE to-1.2 VRHE, and homogenizing for 5 seconds by the homogenizer every 5 minutes; the invention relates to the technical field of organic electro-synthesis, in particular to a method for synthesizing an organic nitrile compound by using Pickering emulsion to electrocatalyze aldoxime dehydration, which is a method for directly preparing organic nitrile from reactants aldoxime and nitrogen dioxide in a reactor under electric drive. According to the method, the traditional synthetic technical route of organic nitrile is avoided, the nitrile compound is synthesized in one step, and the method is a novel synthetic method which is brand-new, green, safe and low in harm to a human body and the environment.

The invention discloses a crosslinkable perfluoroelastomer and a preparation method and application thereof, the preparation method comprises the following steps: (1) mixing nitrile perfluoroalkyl vinyl ether, a fluorocarbon solvent, deionized water and an emulsifier, and emulsifying to obtain a nitrile perfluoroalkyl vinyl ether microemulsion; (2) adding raw materials containing the nitrile perfluoroalkyl vinyl ether microemulsion, perfluoromethyl vinyl ether, tetrafluoroethylene and an initiator into a high-pressure polymerization kettle, and carrying out a copolymerization reaction; (3) after the copolymerization reaction is finished, cooling, emptying the pressure of the polymerization kettle to normal pressure, and taking out the emulsion in the kettle; and (4) demulsifying, condensing, filtering, washing and drying the emulsion in the kettle to obtain the crosslinkable perfluoroelastomer. The copolymer has higher molecular weight and crosslinking degree, and can be used as a sizing material of the perfluoroether rubber to perform vulcanization reaction in a rubber system without a crosslinking agent or with peroxide as a crosslinking agent, and the obtained perfluoroether rubber has excellent high temperature resistance.

The invention belongs to the technical field of gas detection, and particularly relates to a device and a method for detecting decomposition products of insulating gas perfluoroalkyl nitrile. The device comprises a gas collection module, a pretreatment module, a multi-technology combination module, a detection gas chamber and an intelligent data processing and control system, wherein the gas collection module collects and concentrates a gas sample through an equipment gas chamber sampling unit and a low-temperature enrichment unit; the pretreatment module purifies gas and converts complex components through a high-efficiency filter, a dryer and a catalytic conversion unit; the multi-technology combination module is used for separating gas by using a micro gas chromatography unit and carrying out qualitative analysis by using an infrared spectrum unit; a gas sensitive sensor array of the detection gas chamber realizes multi-dimensional detection; a storage module of the intelligent data processing and control system stores various databases, an analysis module calls the databases to analyze multi-module data, and sampling, detection and intelligent analysis of decomposition products are achieved. The problems that existing detection has a leak detection condition and lacks pertinence and high efficiency are solved.

The invention belongs to the technical field of chemical synthesis, and relates to a method for continuously synthesizing 4-bromo-2-p-chlorophenyl-5-trifluoromethyl pyrrole-3-nitrile by a microchannel reactor, which comprises the following steps: pumping a substrate solution to a first plate type micro-reaction module; respectively pumping the bromination reagent solution to a first plate type micro-reaction module, a second plate type micro-reaction module and a third plate type micro-reaction module to obtain a reaction base solution; the reaction base solution is introduced into a fourth plate type micro-reaction module, n-heptane is pumped to the fourth plate type micro-reaction module and a fifth plate type micro-reaction module, deionized water is pumped to the fourth plate type micro-reaction module and the fifth plate type micro-reaction module, and extract liquor is obtained; and carrying out separation, evaporation recovery and recrystallization to obtain a finished product. Through the multi-stage series design of the micro-channel reactor, catalytic bromination replaces traditional bromine oxidation and reaction-extraction in-situ integration, and the three major problems of low efficiency, serious pollution and poor safety of an intermittent process are solved.