129 results about "Azeotropic distillation" patented technology

The invention relates to a method for decalcification and carbon sequestration of fly ash water washing liquid. According to the method, the extraction effect of insoluble organic amine on acid is utilized to improve the pH value of a water washing liquid system, CO2 is continuously absorbed, and calcium in the fly ash water washing liquid is completely removed; the amine in the organic phase is regenerated through alkali, and meanwhile, a small amount of organic diluent mixed in the water washing liquid is separated from low-boiling-point azeotrope containing the organic diluent at the tower top through azeotropic distillation, so that recycling is realized. The prepared calcium carbonate product is small in particle and high in purity, is a high-quality vaterite type calcium carbonate particle, can be used as a very good adsorbent and additive material, and has wide application in multiple fields.

The invention belongs to the technical field of chemical production, and particularly relates to high-purity dimethyl carbonate and a preparation method thereof. The preparation method comprises the following steps: taking ethylene carbonate and methanol as raw materials, taking an alkali alcohol solution as a catalyst, carrying out transesterification in a rectifying tower to obtain dimethyl carbonate and methanol azeotrope, and extracting the azeotrope from the top of the rectifying tower; separating the dimethyl carbonate and methanol azeotrope by adopting pressurized azeotropic distillation to obtain a dimethyl carbonate crude product; and conveying the dimethyl carbonate crude product into a falling film crystallizer for continuous falling film crystallization, controlling the temperature of low-temperature chilled water in the falling film crystallizer to be-10 to 2 DEG C and the circulating material amount to be 3-5 times of the mass of the product required to be produced, and heating to melt the material to obtain the high-purity dimethyl carbonate product. According to the preparation method provided by the invention, rectification crude purification and continuous falling film crystallization processes are adopted, and dimethyl carbonate with the purity of 99.99% or above is obtained.

The invention relates to a synthesis process of p-chlorophenylboronic acid, which comprises the following steps: by taking tetrahydrofuran as a solvent and p-dichlorobenzene as an initial raw material, firstly preparing p-chlorophenylmagnesium chloride through Grignard reaction, then reacting the p-chlorophenylmagnesium chloride with boric acid ester in a microchannel reactor to obtain a p-chlorophenylboronic acid ester crude product, and then hydrolyzing, layering and carrying out oil-phase azeotropic distillation to obtain the p-chlorophenylboronic acid ester. And finally, recrystallizing by adopting a mixed system of an alcohol solvent and a benzene solvent to obtain p-chlorophenylboronic acid with the content of 98% or above. The synthetic process of the p-chlorophenylboronic acid is mild in reaction condition, simple and convenient to operate, low in cost, high in safety, high in product content and very suitable for being applied to industrial large-scale production.

The invention relates to the technical field of dehydration and regeneration methods of water-containing ethylene glycol rich liquor, in particular to an ethylene glycol dehydration and regeneration process and device adopting azeotropic distillation, in the ethylene glycol dehydration and regeneration process adopting azeotropic distillation, fuel gas is adopted as an entrainer of ethylene glycol rich liquor water, so that the boiling point of azeotrope in an ethylene glycol reboiler is reduced. Compared with an existing conventional ethylene glycol rich solution distillation regeneration process, under the condition that the same ethylene glycol barren solution regeneration concentration is achieved, the regeneration temperature is reduced by at least 30 DEG C, heating through a low-frequency electromagnetic heater can be achieved, and heating is safer and more reliable compared with heating through a traditional resistance heater; the regeneration energy consumption is reduced by about 10%, no regeneration tail gas is discharged, the VOCs discharge amount is zero, and the method has the advantage of environmental protection.

The invention belongs to the technical field of azeotropic distillation and dehydration of isopropanol, particularly relates to an azeotropic distillation and dehydration method of industrial-grade isopropanol, and aims to solve the problems that the energy consumption of separation of isopropanol and solvents is high, the energy consumption is low and the like due to the fact that solvents such as benzene and cyclohexane are adopted for azeotropic distillation and dehydration in the conventional isopropanol dehydration process, but the boiling points of benzene and cyclohexane are close to those of isopropanol. In order to solve the problems that when diethyl ether is used as an azeotropic agent, the solvent is easily enriched at the tower top to form potential safety hazards, and when the solvents are used for azeotropic distillation, the requirements of electronic chemicals cannot be met, the following scheme is provided: the method comprises the following steps: S1, adding an industrial-grade isopropanol raw material into an azeotropic distillation tower; the azeotropic dehydrating agent disclosed by the invention is small in boiling point, high in ignition point, non-corrosive, low in price, good in safety and low in separation energy consumption, and has excellent application value and application prospect in industrial production and experiments, the used device is simple and easy to operate, the yield is high, and automatic production can be realized.

The invention relates to a process for extracting alcohols from an initial mixture (1) comprising alcohols in aqueous phase, with:a distillative separation by an isopropanol-butanol distillation column (III) equipped at the top with a condenser (c3), intended for separating said mixture into a water-isopropanol azeotrope stream (6) at the top and into a water-butanol azeotrope stream (7) at the bottom,a distillative separation intended for separating the water-butanol azeotrope stream into water and butanol, by a hetero-azeotropic distillation system comprising at least one water-recovering water column (IV) and at least one butanol (9)-recovering butanol column (V) equipped with a reboiler (r5),such that a heat transfer is performed from the top water-isopropanol azeotrope stream (6) entering the condenser of the isopropanol-butanol distillation column (III), to the stream entering the reboiler of the butanol column (V).

The invention belongs to the technical field of organic matter purification, and relates to a rectification purification process of NMP (N-Methyl Pyrrolidone). The invention aims to solve the problem that water and organic impurities are difficult to efficiently remove at the same time in the conventional NMP purification process. The method comprises the following steps: carrying out normal-pressure primary distillation treatment on a raw material NMP to obtain tower top NMP; treating the tower top NMP through an adsorption rectification unit to obtain refined NMP; the refined NMP is subjected to azeotropic distillation treatment to obtain dehydrated NMP, the water content of the dehydrated NMP is detected by a water content detection unit, azeotropic distillation is performed again if the water content is higher than a threshold value, the dehydrated NMP is introduced into a reduced pressure distillation unit if the water content is lower than the threshold value, an electronic-grade NMP product is finally obtained through a membrane separation unit, and waste heat is recovered and used for preheating the raw material NMP. According to the rectification purification process provided by the invention, an industrial-grade raw material NMP can be purified to obtain an electronic-grade NMP product, and waste heat in the distillation process can be recycled.

The utility model relates to an MTO (Methanol To Olefins) concentrated water treatment device, which comprises a circulating liquid phase hydrogenation unit and a dehydration unit, aldehyde and ketone components in MTO concentrated water are converted into mixed alcohol through circulating liquid phase hydrogenation, and most of water in the mixed alcohol is removed through flash evaporation degassing, azeotropic distillation and zeolite membrane dehydration treatment. According to the MTO concentrated water treatment device, a mixed alcohol product with low water content (about 2wt%) and waste water with low alcohol content (less than 0.2 wt%) are obtained, the technical index of the obtained mixed alcohol product is higher than the national standard of alcohol-based liquid fuel GB16663-1996, and ethanol, isopropanol and 2-butanol products can be obtained through further separation. The additional value is also improved, and the purposes of improving the quality and improving the efficiency are achieved.

The present invention relates to a process for preparation of 1,3-butylene glycol, the process comprising: (a) stripping off acetaldehyde from a crude mixture comprising acetaldol acetaldehyde and water, at a temperature in a range from 80°C to 90°C, to produce a concentrated acetaldol, (b) hydrogenating the concentrated acetaldol to produce a crude 1,3-butylene glycol, and (c) subjecting the crude 1,3- butylene glycol to azeotropic distillation. The process of the present invention reduces hydrogen consumption in step (b) and further reduces colour and odor causing impurities. The invention also relates to 1,3-butylene glycol having low concentration of colour and odor causing impurities.

The application provides a preparation method of high-purity pyromellitic dianhydride, which is prepared from 2,3-dichloromaleic anhydride as raw material, and sequentially subjected to Diels-Alder cycloaddition reaction, elimination reaction and oxidation reaction to obtain high-purity pyromellitic acid, and then subjected to dehydration treatment to obtain high-purity pyromellitic dianhydride. In the preparation method, pyromellitic acid is used as a dehydration raw material to prepare anhydride, so that intermediate acid by-products are not easy to be generated, and the product purity is improved; the dehydration reaction is promoted by adopting azeotropic distillation and separation coupling, so that the reaction yield is improved; the preparation steps are few, the reaction process is simple, the reaction condition is mild, the raw materials are economically inexpensive and easy to obtain; the catalyst or the aid used in each step does not generate harmful substances, and is green and environment-friendly.

The invention discloses a recycling process for cinnamaldehyde production wastewater. The process comprises the following steps: filtering the cinnamaldehyde production wastewater after cooling treatment to obtain a first aqueous phase and a first solid phase; performing azeotropic distillation on the first aqueous phase to separate the azeotrope of acetaldehyde, benzaldehyde and water to obtain wastewater containing polyacetaldehyde; adding acid to the wastewater containing polyacetaldehyde to perform acidolysis reaction, then distilling and recovering acetaldehyde, and then filtering the mixture left by distillation to obtain acetaldehyde-free wastewater and scraps; dissolving the first solid phase with a first organic solvent, then adding alkali to perform a first neutralization reaction, separating the liquid after the reaction is completed, and then performing a first acidification on the inorganic layer to obtain benzoic acid, and concentrating the organic layer to obtain scraps. The present invention realizes the comprehensive utilization of useful components in wastewater, reduces emissions and reduces the treatment intensity of the final waste, achieves the transformation of waste into treasure, and comprehensive utilization of resources, significantly improves economic benefits, and greatly enhances the market competitiveness of the cinnamaldehyde project.

The invention discloses a solvent regeneration method for extracting 1, 3-butadiene by an acetonitrile method, which comprises the following steps: leading out acetonitrile extracted in a 1, 3-butadiene extraction process from a circulating system, feeding into a solvent adsorption unit for adsorption, preheating, feeding into a solvent rectifying tower to remove residual impurities, and obtaining regenerated acetonitrile from a tower kettle. According to the method disclosed by the invention, different types of impurities in the circulating acetonitrile solvent can be effectively removed in a mode of combining adsorption and azeotropic distillation, so that the total amount of the impurities in the refined acetonitrile solvent is as low as 10ppm or below, the metal ions are controlled to be 1ppm or below, and the loss amount of acetonitrile is controlled to be 1wt.% or below. According to the method, intermittent or continuous flexible operation can be realized, and the operation period of a butadiene device is greatly prolonged.

The invention provides a method for rectifying trifluoromethanesulfonyl fluoride, which can be used for effectively purifying trifluoromethanesulfonyl fluoride feed gas containing impurity gases such as HF, CO2, SO2 and the like, and comprises the following steps of: obtaining an azeotrope of trifluoromethanesulfonyl fluoride and HF by using a conventional rectifying process, condensing the azeotrope, settling, splitting phases, and rectifying and purifying again, thereby obtaining the trifluoromethanesulfonyl fluoride. The problem that trifluoromethanesulfonyl fluoride and HF cannot be thoroughly separated through azeotropic distillation is solved. The invention also provides a rectification device of the trifluoromethanesulfonyl fluoride, the rectification device comprises a collecting tower, a light component removal tower, a heavy component removal tower, a settling separation tank and a finished product rectification tower which are connected in sequence, continuous rectification preparation of the high-purity trifluoromethanesulfonyl fluoride is realized, and the purity of the high-purity trifluoromethanesulfonyl fluoride is not less than 99.5%.

The invention discloses a method for purifying isopropanol from isopropanol waste liquid. The method comprises the following steps: (1) primary rectification; (2) solid alkali dehydration; and (3) secondary rectification. Compared with a membrane separation method, the method provided by the invention has the advantages that membrane equipment does not need to be introduced, and the cost is greatly reduced; compared with an azeotropic distillation method, the method has the advantages that energy consumption is effectively reduced, an entrainer is not needed, expenditure is reduced, the problems of personal harm and environmental pollution do not exist in production operation, on the basis of existing distillation equipment, isopropanol is purified to the maximum extent in a simplest and most convenient mode to increase income, loss is low, and the method is suitable for industrial production. Other equipment does not need to be purchased, expenditure is reduced, and harm and pollution are avoided.

The invention discloses a knitted elastic composite sports suit and a preparation process thereof, and relates to the field of high polymer material modification and functional textiles, and the process comprises the following steps: firstly, thoroughly removing latent water in hollow silicon dioxide microspheres by using an azeotropic distillation technology, and regulating and controlling the density of active sites on the surfaces of the microspheres in cooperation with a double-effect silane system; then, grafting the modified microspheres to a polyurethane prepolymer main chain in situ under a low-temperature condition, and constructing an organic-inorganic covalent bonding network through a chain extension reaction; finally, modified fibers are prepared through dry spinning, and plaiting weave and moisture absorption and sweat releasing yarn are adopted for composite weaving. The technical problem that inorganic hollow filler is prone to gelation and spinning end breakage in polymerization is effectively solved, firm anchoring of functional particles in fibers is achieved, and the dynamic heat insulation stability, washing resistance and damp and hot comfort of sports suits are remarkably improved.

The invention discloses a heterogeneous azeotropic distillation ether dehydration, separation and purification method, and belongs to the technical field of propylene glycol monomethyl ether and propylene glycol isomethyl ether recovery methods. An ether-water mixture is fed into an ether concentration tower through a first material flow pipeline, and the top of the ether concentration tower is communicated with a first condenser; the first condenser is connected with a middle feeding pipeline and is communicated with the middle of the azeotropic dehydration tower, the upper feeding pipeline is separated from the middle feeding pipeline and is communicated with the upper part of the ether azeotropic dehydration tower, a material discharged from the bottom of the ether azeotropic dehydration tower is communicated with a methyl ether product tower, and the liquid separation tank is connected with an azeotropic agent from the outside; an entrainer injection pipeline connected from the liquid separation tank is communicated with the middle of the ether azeotropic dehydration tower, a first branch pipeline connected from the entrainer injection pipeline is communicated with the top of the ether azeotropic dehydration tower, and second regulating valves are mounted on the entrainer injection pipeline and the second branch pipeline; the method solves the technical problems of large usage amount of benzene as an entrainer and difficulty in wastewater treatment in the prior art, and is mainly applied to separation and purification of the ether-water mixed solution.

Provided is a method for producing purified isopropyl alcohol by dehydrating crude isopropyl alcohol containing water as an impurity, the method comprising: a phase separation step in which a mixed liquid of the crude isopropyl alcohol and an azeotropic agent is accommodated in a phase separation tank and phase-separated into an upper-phase liquid containing the azeotropic agent, water, and isopropyl alcohol and a lower-phase liquid containing water; and an azeotropic distillation step in which the upper-phase liquid is subjected to azeotropic distillation in an azeotropic distillation column, and a distillate containing an azeotropic mixture of the azeotropic agent and water and a bottom product containing isopropyl alcohol are extracted, wherein the distillate is supplied to the phase separation tank.

The invention provides a preparation method of an antioxidant TBHQ (tert-butylhydroquinone), which comprises the following steps: adding a certain amount of reducing agent into hydroquinone in the presence of an acid catalyst and a solvent, heating to a reaction temperature under the protection of nitrogen, maintaining for a certain time, and then introducing isobutene to carry out alkylation reaction; after the reaction is finished, separating the acid phase catalyst while hot, cooling, crystallizing and filtering an oil phase to obtain a crude product, adding a certain amount of water and a reducing agent into the crude product, carrying out azeotropic distillation under the protection of nitrogen to remove a residual solvent, filtering while hot to remove DTBHQ, cooling, crystallizing and filtering filtrate to obtain a semi-finished product, and recrystallizing the semi-finished product by using a solvent to obtain the DTBHQ. And finally, filtering and drying in vacuum to obtain a white finished product TBHQ. According to the preparation method disclosed by the invention, through the design of the technological process, the output of oxidation byproducts TBQ and DTBQ is greatly reduced, the product quality and yield are improved, three wastes are reduced, the cost is reduced, and the shelf life of the product can be prolonged.

The present invention relates to a method for recovering organic solvents and alkaline earth metal chloride salts in aramid production waste liquid, belongs to the technical field of waste liquid treatment / recovery process, and solves at least one of the problems that the existing treatment / recovery process will cause secondary pollution, high energy consumption, and inability to simultaneously recover alkaline earth metal chloride salts. The present invention provides a method for recovering organic solvents and alkaline earth metal chloride salts in aramid production waste liquid: the recovery method includes three process sections, which are flocculation precipitation process section, azeotropic distillation process section, and "distillation + evaporation crystallization" process section, and finally obtains pure high-concentration organic solvent and alkaline earth metal chloride salt crystals. The recovery method provided by the present invention can realize the efficient recovery of organic solvents and alkaline earth metal chloride salts in aramid production waste liquid. Taking the DMAC-CaCl2 waste liquid system as an example, the recovery rate of DMAC can reach 98.3%, the recovery rate of CaCl2 can reach 94.5%, and the purity of DMAC is ≧99.99%.

The invention relates to the technical field of organic synthesis, and discloses a synthesis process of salicylaldehyde. The process sequentially comprises three core stages: firstly, performing mechanochemical ball milling pretreatment on phenol, a catalytic complexing agent and a molecular sieve drying agent in an inert atmosphere; then, transferring the pretreated mixture into a reactor containing a composite solvent of sulfolane and ionic liquid [BMIM] PF6, and dropwise adding a hexamethylenetetramine solution under programmed temperature control to perform formylation reaction; and finally, cooling the reaction liquid, filtering, hydrolyzing the filtrate by using a phosphoric acid aqueous solution with gradient concentration, and separating the product in real time through azeotropic distillation. According to the process, mechanical activation, composite solvent and programmed reaction are combined, the process is continuous, and the reaction efficiency and selectivity are improved.

The invention provides a device and method for producing engineering plastics through continuous polymerization of a rubber solution, and the device comprises a direct rubber solution conveying system which is provided with a polymerization kettle; the premixing unit comprises a dynamic mixer and a premixing kettle; the solvent recovery system comprises a devolatilization tower and an azeotropic rectification tower; wherein the polymerization kettle is directly connected with the premixing unit through a thermal insulation pipeline. According to the invention, the glue solution is directly used for polymerization production of ABS or HIPS, and the cyclohexane solvent is refined and recycled, so that the problems of high energy consumption, low efficiency, complex flow, environmental pollution and the like in the traditional process can be solved.

The invention discloses a production device and a production method of dimethyl adipate, and belongs to the technical field of organic chemical synthesis. According to the scheme, efficient conversion of part of adipic acid is realized in the pre-reactor, so that the reaction load of a subsequent catalytic distillation tower is reduced; cyclohexane is adopted as an azeotropic water-carrying agent in a catalytic distillation tower, water generated by reaction is removed in real time through azeotropic distillation, the equilibrium limitation of esterification reaction is broken, complete conversion of adipic acid is realized, and the reaction efficiency is remarkably improved. According to the method, methanol and cyclopentane are efficiently separated through the washing step, cyclic utilization of cyclopentane is achieved, and raw material consumption is greatly reduced; meanwhile, resource utilization of methanol is achieved through the methanol recovery system, and waste emission is reduced. The method can effectively reduce energy consumption and production cost, improves product quality, and solves the problems of easy catalyst deactivation, severe equipment corrosion, high three-waste treatment cost and the like in the prior art.

A process for converting a liquid feed based on hydroxypropanoic acid into bio-acrylic acid, comprising at least the following steps: a step of vaporization (a) of a liquid feed based on hydroxypropanoic acid (3), a step (b) of catalytic dehydration of the hydroxypropanoic acid-based gaseous stream (3) to form acrylic acid, and a specific recovery and purification sequence (steps c) to g)) for the bio-acrylic acid produced, to obtain a bio-acrylic acid purified in terms of propionic acid, said specific purification sequence being based in particular on a first step of azeotropic distillation of the aqueous acrylic acid effluent, making it possible to remove the propionic acid upstream of the transfer of the acrylic acid into the organic phase.

The invention discloses a method for recovering a tert-butyl acetate dealcoholization tower top material. Aiming at the problem that tertiary butanol and diisobutylene in a dealcoholization tower top material are unbalanced in proportion and cannot be directly recycled, the method comprises the following steps: adding a specific entrainer (such as methanol) into the material, and carrying out azeotropic distillation in a tertiary butanol recycling tower by utilizing the characteristic that the entrainer and diisobutylene form a lower-boiling-point azeotrope. An azeotrope of the entrainer and diisobutylene is extracted from the tower top, and an enriched tert-butyl alcohol material which can be directly recycled is obtained from the tower bottom. According to the method, only one rectifying tower unit is needed, the technological process is simple, the azeotrope which is difficult to treat through a traditional method is successfully separated, efficient recycling and cyclic utilization of the tert-butyl alcohol are achieved, it is not needed to purchase the tert-butyl alcohol to adjust the proportion, production raw material consumption and separation energy consumption of the tert-butyl acetate are remarkably reduced, and remarkable energy-saving and consumption-reducing benefits are achieved.

This invention discloses an azeotropic extraction apparatus and method for enhanced separation of a mixture of n-propanol, isopropanol, and acetonitrile using ionic liquids. The apparatus includes an azeotropic distillation column, a product separation column, an extractive distillation column, and two-stage adiabatic flash tanks. Part of the isopropanol from the top of the product separation column is refluxed to the azeotropic distillation column as an azeotropic agent. The ionic liquid from the bottom of the extractive distillation column is recovered via a first-stage flash tank and a second-stage flash tank. The vapor from the top of the second-stage flash tank is compressed by a compressor and then recycled back to the first-stage flash tank, forming a heat self-coupling. The control scheme includes temperature control via sensitive plates at both ends of the product separation column and cascade control of the extractant / azeotropic agent ratio. This invention operates at atmospheric pressure, avoiding investment in high-pressure equipment; the recovered ionic liquid purity reaches 99.9% and can be recycled long-term; and it can stably produce a product with a purity ≥99.9% even within a feed composition fluctuation range of ±30%.

The invention discloses a dehydration method of a raw material 1, 5-pentanediamine in a PDI synthesis process by a phosgenation method, which is characterized by comprising the following steps: firstly, uniformly mixing the raw material 1, 5-pentanediamine and a solvent chlorobenzene according to a mass ratio of 1: 3; secondly, according to the azeotropic distillation principle, water in the mixed material is slowly enriched at the tower top through reduced pressure distillation and tower top total reflux operation modes; thirdly, passing through a tower top oil-water two-phase dynamic separator, and slowly and continuously extracting the enriched water phase (upper layer) from an overflow port at the upper end of the dynamic separator; and then continuously extracting the qualified mixed material dehydrated in the tower kettle from the tower kettle. According to the method, the moisture content of the mixture of the dehydrated raw material 1, 5-pentamethylene diamine and the solvent chlorobenzene is less than or equal to 50ppm, the dehydration efficiency is high, and the operation cost is low. The technical index requirements of a PDI synthesis process by a phosgenation method are completely met.

The invention provides a process for inhibiting dioxane and unsulfonated substances in AES production, which comprises the following steps: (1) adding a composite inhibitor into a fatty alcohol-polyoxyethylene ether raw material for pretreatment, the composite inhibitor being composed of citric acid and EDTA (Ethylene Diamine Tetraacetic Acid); (2) carrying out sulfonation reaction on the pretreated raw materials by adopting sulfur trioxide; (3) neutralizing a sulfonated product; (4) sequentially carrying out water washing-azeotropic distillation and nanofiltration membrane separation on the neutralized product; and (5) drying to obtain a high-purity AES product. Synchronous removal of unsulfonated substances is realized, and an unexpected synergistic effect is generated through a composite inhibitor in a specific proportion.

Described is a process for preparing a catalyst precursor based on at least one transition metal belonging to groups 5 to 12, containing organic sulphur, in the form of sulfonate ions, and / or carboxylate ions, comprising the steps of - reacting an organic acid selected from a sulfonic acid, a carboxylic acid (of fossil or renewable origin), and their combination, with a source of said at least one transition metal, optionally in the presence of a reducing agent; - removing the water produced in the aforementioned reaction by azeotropic distillation, or by anhydrification with a drying agent, to obtain at least one carboxylate and / or sulfonate salt of said transition metal, with the condition that when the acid is only a carboxylic acid and the metal is only Mo, said Mo has an average oxidation state that varies from +6 to +4.

The invention discloses a device for industrial production of glycidol and a production method thereof, the top of a reaction kettle is provided with a liquid alkali solution continuous feeding hole and is connected with an azeotropic rectifying tower, the bottom of the reaction kettle is provided with a reaction liquid outlet, and the top of the azeotropic rectifying tower is provided with a gas phase outlet; a gas phase outlet is sequentially connected with a second condenser and a liquid-liquid layering device, an organic phase outlet of the liquid-liquid layering device is connected with a liquid distributor at the top of the azeotropic rectifying tower, and a water phase outlet of the liquid-liquid layering device is connected with a solvent recovery tower; an inlet of the centrifugal filtering device is connected with a reaction liquid outlet of the reaction kettle; a filtrate outlet is connected with an inlet of the wiped-film evaporation device; an organic phase outlet is formed in the top of the wiped-film evaporation device and connected with an inlet of the first condenser, and a heavy component discharge port is formed in the bottom of the wiped-film evaporation device; and an outlet of the first condenser is connected with a glycidyl rectification system. The method has the advantages of low cost, high safety coefficient, environmental protection, high product purity, high reaction yield and the like.

The invention relates to the technical field of chemical engineering, and particularly discloses an anhydrous organic peroxy acid production system and method.The anhydrous organic peroxy acid production system comprises a peroxidation reaction distiller, a first oil-water separator, an azeotropic distillation tower and a second oil-water separation and light component removal tower, and moisture is brought out of a reaction system through two times of azeotropy and two times of oil-water separation; and the solvent and the entrainer are respectively recovered through the azeotropic distillation tower and the light component removal tower, and the recovered materials can be recycled. According to the present invention, with the method, the hydrogen peroxide conversion rate and the organic peroxy acid selectivity are high, the prepared anhydrous organic peroxy acid has characteristics of excellent quality and water content of less than 0.01%, and the process has advantages of short reaction time, high raw material utilization rate, high heat energy utilization rate and good economy.