77results about "Vacuum distillation separation" patented technology

The utility model relates to distillation condensing device technical field discloses a kind of novel high-efficiency crude distillation condensing device, including distillation kettle, the distillation kettle is hollow cavity, bottom is provided with heating mechanism, top is communicated steam outlet, spiral condenser tube, the spiral condenser tube is connected with steam outlet, collector, the collector is communicated with spiral condenser tube outlet, for receiving condensate, temperature sensor, the temperature sensor is installed at steam outlet, vacuum pump, the vacuum pump is communicated with the top of distillation kettle by connecting pipe, cooling water circulation system, the cooling water circulation system includes cooling water tank and circulating pump. In the utility model, through the heat exchange structure of spiral condenser tube and double-layer spiral cooling jacket, cooperate the negative pressure distillation design of vacuum pump, effectively reduce liquid boiling point and increase condensing area, significantly improve distillation efficiency and energy utilization rate, while distillation kettle inner wall hydrophobic coating reduces liquid adhesion, further optimizes distillation process.

The utility model relates to waterborne polyurethane production technical field discloses a device of residual acetone in high -efficient out of waterborne polyurethane, including the reaction kettle, the reaction kettle side wall fixed mounting has spiral heating pipe, the utility model discloses the setting and the design of stirring blade present V -shaped flying wing shape of stirring mechanism, not only can promote material even heat, accelerate acetone volatilization, can also produce the big shearing force by its edge, effectively break the agglomerate in waterborne polyurethane, prevent local heating temperature too high, the colloid surface moisture volatilization causes the skin, and let residual acetone fully expose, one side through the setting of liquid pumping and spraying mechanism, further greatly increase gas -liquid contact area, more acetone can be fast volatilized, speed up the acetone from waterborne polyurethane in the separation speed, high -efficient realization acetone and other component separation, greatly shorten the processing time, significantly improve acetone removal rate, promote overall production efficiency.

This invention provides a vacuum-assisted drying and slag discharge control method for a distillation kettle, which automatically completes drying triggering, vacuum drying, and precise slag discharge, reducing the moisture content of the residue and improving system stability. The applicable vacuum-assisted drying and slag discharge equipment for the distillation kettle includes a distillation kettle, a heating system, a vacuum system, a detection unit, and a control unit. A spiral stirring shaft is arranged axially in the distillation kettle, with a speed reducer connected to its input end. The detection unit includes a moisture meter inside the kettle, a speed reducer torque acquisition module, and a secondary moisture content sensor at the slag discharge port. The vacuum system is connected to the inner cavity of the distillation kettle, and the speed reducer, vacuum system, heating system, detection unit, and control unit are electrically connected. The control is divided into the following steps: S1, drying triggering stage; S2, vacuum-assisted drying stage, maintaining the ultimate vacuum inside the distillation kettle for drying operations; S3, slag discharge determination stage; S4, slag discharge execution stage.

The utility model provides a kind of for perchloromethylmercaptan purification azeotropic distillation device, belong to captan production technical field, including: distillation kettle and azeotropic rectification tower;The feed inlet of distillation kettle is connected with perchloromethylmercaptan storage tank, and the distillation outlet of distillation kettle upper portion is connected with carbon tetrachloride storage tank by vacuum pump, and the discharge port of distillation kettle bottom is connected with the feed inlet of azeotropic rectification tower by feed pump;The feed inlet of azeotropic rectification tower is also connected with dichloroethane storage tank;The bottom discharge port of azeotropic rectification tower is connected with captan synthesis kettle, and the top discharge port of azeotropic rectification tower is connected with azeotrope storage tank.This device can significantly reduce carbon tetrachloride content, process and simple operation, and the azeotrope used can be reused, and the carbon tetrachloride content in perchloromethylmercaptan after purification is reduced to below 100ppm, which can be directly sent into captan synthesis kettle to participate in synthesis reaction, so that it meets export standard.

This invention provides a short-path distillation apparatus comprising a distillation tank, a distillation tube, a cooling tube, and a separating component. The distillation tank has a heating zone; the distillation tube is located within the heating zone and is connected to the inlet, a first outlet, and a second outlet; at least a portion of the cooling tube is located inside the distillation tube and is coaxially arranged with it; the cooling tube is used to condense the gas corresponding to the liquid material vaporized by the heating medium in the heated zone of the distillation tube, obtaining condensed liquid; the separating component is located inside the distillation tank and below the distillation tube, and is used to guide the liquid material vaporized by the heating medium in the unheated zone of the distillation tube to the first outlet and to guide the condensed liquid to the second outlet. This invention can separate light and heavy components in liquid materials and is also suitable for large-scale distillation.

The application discloses a segmented distillation system for tert-butyl benzyl chloride, which comprises a front fraction distillation tower, a flash vaporization tower and a segmented rectification tower which are independently operated; the front fraction distillation tower is used for removing light components under high vacuum conditions; the flash vaporization tower and the segmented rectification tower are operated in series; an independent heater is additionally arranged in the flash vaporization tower so that materials are rapidly vaporized within 5-10 seconds; the height of the segmented rectification tower is controlled within 10-12 meters and is provided with a finished product recovery system; through the three-stage cooperative design, the whole process is operated under high vacuum, low temperature and short residence time, the polymerization reaction of the tert-butyl benzyl chloride is greatly inhibited, the product yield is increased by 10-25%, the purity reaches 99.0-99.8%, the tower height is reduced by more than 40% than that of the traditional process, the equipment operation cycle is prolonged by 3-5 times, and the segmented distillation system is especially suitable for low-space plant installation and old plant transformation.

The invention belongs to the technical field of spinning, particularly relates to a high-strength polyethylene gel spinning system white oil deep purification and cyclic utilization process, and aims to solve the problems of incomplete purification, low cyclic utilization rate, unstable reuse quality, large adsorbent loss and high energy consumption in the prior art, and provides the following scheme: the method comprises the following steps: S1, collecting and pretreating crude white oil; the method comprises the following steps: collecting crude white oil generated in a high-strength polyethylene gel spinning extraction section, centrifugal deoiling and dry tail gas condensation, collecting the crude white oil into a crude white oil storage tank, adding a pretreatment aid into the crude white oil, and realizing deep purification and efficient circulation of the high-strength polyethylene gel spinning waste white oil through cooperation of a five-stage closed-loop process and five sets of customized formulas in a nitrogen protection atmosphere. The adsorption efficiency is improved by more than 35%, the index is close to that of fresh white oil, the cyclic utilization rate of the white oil is more than or equal to 95%, the consumption of each ton of fibers is reduced to below 1kg from 20kg, the hazardous waste output can be greatly reduced by more than 85% by the process, and VOC (volatile organic compounds) can be discharged after reaching the standard.

The application relates to the field of continuous dehydration systems, and discloses an industrial continuous dehydration vacuum system and a working method. The system comprises a front-stage vacuum circuit and a rear-stage vacuum circuit. Two liquid ring vacuum pumps are connected in series. The front-stage vacuum pump adopts conventional water as sealing liquid, and the rear-stage vacuum pump adopts a high-boiling-point liquid dissolved in water as working liquid. The front-stage vacuum pump provides negative pressure, and a heating source is used to remove a small amount of water in the working liquid in time, so that the vacuum degree of a production device is ensured. Meanwhile, an automatic control process scheme is adopted, so that the purpose of continuous and stable dehydration under various vacuum conditions is achieved. The continuous dehydration vacuum system provided by the application is reliable in operation, has strong adaptability to the change of water vapor content in extracted gas, produces a small amount of waste water, can meet various vacuum working conditions and continuous operation.

A kind of electronic grade semiconductor stripping liquid purification method, comprising: providing electronic grade semiconductor stripping liquid residual liquid, and carry out pH detection, when pH<7, drop NaOH solution to stop;The residual liquid after neutralization is extracted into distillation kettle, and the aqueous solution of residual liquid is removed, and the water is collected into storage tank from the top of kettle, and the bottom of kettle is waste liquid containing salt, and salt is removed by cooling, crystallization, centrifugation, and the aqueous solution of electronic grade semiconductor stripping liquid is recovered by redistillation;Water is extracted into dehydration kettle, and water is separated, and the bottom of kettle is electronic grade semiconductor stripping liquid crude product;The crude product is refined using rectifying kettle, and electronic grade semiconductor stripping liquid pure product is collected from the top of kettle;Electronic grade semiconductor stripping liquid pure product is microfiltrated using peristaltic pump, and electronic grade semiconductor stripping liquid fine product is prepared.The present application not only effectively improves the utilization rate of stripping liquid, reduces environmental pollution, provides convenient conditions for waste treatment, but also improves safety factor, reduces operating cost, and is worth popularizing and using in industry.

The application provides a continuous purification driving system and method for high-temperature-resistant flexible thermal insulation materials, and belongs to the field of purification processing of third-generation semiconductor thermal insulation materials; solves the problem of low purification efficiency of existing purification devices; the system comprises a feeding system, a purification system and a discharging system which are sequentially connected; a first driving device is arranged in the purification system and is used for winding the flexible thermal insulation material; a second driving device is arranged in the feeding system; a first driving shaft is detachably arranged on the second driving device; a third driving device is arranged in the discharging system; a second driving shaft is detachably arranged on the third driving device; the first driving device, the second driving device and the third driving device are matched with each other, so that the flexible thermal insulation material to be purified is stored on the third driving device after being purified from the feeding system through the purification system; and the application is applied to a thermal insulation material purification system.

The invention discloses an efficient regeneration method and system for inactivated alkali liquor in a liquefied gas extraction-oxidation mercaptan removal device, and belongs to the field of petrochemical engineering. The method comprises the following steps: carrying out reduced pressure distillation and concentration on inactivated alkali liquor, adsorbing clear liquid through activated carbon, adding calcium hydroxide for chemical precipitation, and enabling filtrate to sequentially pass through anion exchange resin and a nanofiltration membrane, so as to obtain purified alkali liquor. The method provided by the invention can effectively regenerate the inactivated reduced pressure, reduces the discharge amount of alkaline residues by more than 95%, and has remarkable environmental protection and economic benefits.

The utility model belongs to the field of chemical production technology discloses a kind of gas-liquid separation devices for vacuum unit in clethodim production, including vacuum unit, the one end of vacuum unit is equipped with unit air inlet, the other end is equipped with unit air outlet, unit air outlet is connected to circulating liquid storage tank by pipeline, valve and circulating pump;Circulating liquid storage tank top is equipped with condensate inlet;Condensate inlet is connected to the condensate outlet of the bottom of gas-liquid separator by pipeline and valve;Gas-liquid separator upper portion is equipped with separator air outlet and detection air port, separator air outlet is connected to the unit air inlet of vacuum unit by pipeline, and detection air port is connected to detection device by pipeline.The utility model can guarantee the safety of staff body and environment, guarantee detection effect, improve production efficiency.

The present disclosure provides a method for preparing vitamin D2 using a microchannel reactor, including: (a) dissolving ergosterol in a first solvent to form a first reaction solution; (b) introducing the first reaction solution into the microchannel reactor, and the first reaction solution is irradiated with light source A and light source B in sequence as the first reaction solution passes through a first photoreaction zone and a second photoreaction zone; (c) collecting and concentrating the first reaction solution irradiated by the light source B; (d) optionally, mixing the first reaction solution of step (c) with a second solvent to form a second reaction solution; (e) heating the first reaction solution of step (c) or the second reaction solution of step (d) to obtain the vitamin D2.

The utility model discloses a kind of for cottonseed oil deodorization device, it is related to cottonseed oil deodorization technical field.The for cottonseed oil deodorization device, including deodorization pot body, the deodorization pot body side is provided with feed inlet, the deodorization pot body one side is provided with steam pipe, the deodorization pot body one side is provided with vacuum pump, adjusting assembly is provided in the deodorization pot body, and the adjusting assembly is used to adjust the space in deodorization pot body is big.The for cottonseed oil deodorization device, using adjusting assembly is convenient for adjusting the space size in deodorization pot body, it is convenient for adjusting the amount of single processing cottonseed oil, and the amount of suitable space can reduce vacuum pump and steam, and improve the heating efficiency of heating mechanism in deodorization pot body, heat insulation plate is convenient for preventing heat transfer upwards, and the structure can reduce the energy consumption of processor's processing, thereby reduce the processing cost of processor.

This invention relates to a method for removing non-metallic impurities of carbon and oxygen from high-purity selenium, belonging to the field of high-purity selenium purification technology. The invention provides a method for removing non-metallic impurities of carbon and oxygen using high-purity selenium. The method involves vacuum distilling 99.999% high-purity selenium with a metal (or metal mixture) reducing agent under argon atmosphere while maintaining the temperature at 400℃ for 120 minutes. The carbon content in the resulting selenium volatiles is reduced from 0.0024% to <0.0001%, and the oxygen content is reduced from 0.011% to 0.0066%. The method described in this invention is simple, safe, controllable, and easy to operate.

A moisture evaporation device for a cold-end system in sponge titanium production mainly consists of a large cover and a reactor, with a sealing gasket between the large cover and the reactor. The lower flange of the reactor connects to the flange of a heating device, with another sealing gasket between the two. The large cover is equipped with a vacuum tube and a temperature measuring tube, and a valve C and a pressure gauge B are mounted on the vacuum tube. The heating device provides insulation and mainly consists of a heat inlet pipe, valve A, an outlet pipe, valve B, and pressure gauge A. This invention ensures that the large cover and reactor of the cold-end system are in a water-free state before entering production, guaranteeing the quality of the produced sponge titanium. It has a simple structure and is easy to operate.

The application discloses an ozone method for preparing glyoxylic acid monohydrate distillation reaction control method, including the following steps: step S1, the glyoxylic acid-formic acid mixed solution obtained by oxidation reaction is introduced into the distillation kettle; step S2, the heat exchange jacket and heat exchange coil in the distillation kettle are passed through 80 DEG C hot water; step S3, the vacuum is opened, and the inside of the distillation kettle is subjected to vacuum distillation; step S4, the vacuum degree, temperature and material density in the reaction kettle are monitored; step S5, the distillation reaction endpoint is judged by the change trend of the material temperature, vacuum degree and density in the kettle; step S6, the finished product after distillation is discharged into the glyoxylic acid storage tank, and the formic acid solution evaporated and condensed is discharged into the receiving tank. The application controls the parameters of the distillation process accurately, stops the distillation of the material immediately when the reaction reaches the endpoint, guarantees that the glyoxylic acid monohydrate product reaches the accurate water content ratio, and prevents water from being over-steamed, so that the product cost is prevented from being increased.

This utility model relates to the field of allicin technology and discloses a mixing and concentration device for allicin preparation raw materials. The top of the reaction vessel is provided with a sealing groove, and a sealing ring is snapped into the inside of the sealing groove. The top of the sealing ring is fixedly connected to the vessel lid, and the bottom of the vessel lid is fixedly connected to a flow guide hood. The top of the vessel lid is fixedly connected to a water storage tank, and the top right side of the water storage tank is fixedly connected to a drain pipe. The top rear side of the water storage tank is fixedly connected to a water pump, the rear side of the water pump is fixedly connected to a water inlet pipe, and the front side of the water pump is fixedly connected to a water outlet pipe. By setting up a flow guide hood, a collection box, etc., the water pump delivers cooling water to the upper surface of the flow guide hood through the water outlet pipe, thereby reducing the temperature of the flow guide hood. The water after heat exchange is discharged through the drain pipe for cooling, forming a circulation and keeping the flow guide hood at a low temperature, thereby enhancing the condensation effect of the flow guide hood, improving working efficiency, and facilitating operation by staff.

The utility model discloses a spiral membrane vacuum tower of high -efficient removal lubricating oil gas relates to lubricating oil processing technical field, the utility model discloses a base, the top outer wall fixedly connected with support plate of base, the utility model discloses a turbine agitator and spiral flow guide groove are set up, and the contact area of liquid and the inside of flow -through pipe is increased through spiral flow guide groove in the flow -through pipe, and because the turning of turbine agitator and spiral flow guide groove is opposite, the shear force produced when the rotation of two can tear liquid into small pieces, thereby extruding the tiny bubble in liquid, reach the shear force produced when turbine agitator and spiral flow guide groove rotate in the jar extrude the tiny bubble in liquid, prevent the emergence because traditional degassing jar relies on the rotation of stirring part and increase its contact area with liquid, thereby extruding gas, but the extrusion area of stirring part and liquid is limited, lead to the oil gas efficiency of device to liquid is not good, and the problem such as not thorough degassing.

The present application relates to a kind of bubble drinks for high uric acid population, production method, equipment, belong to functional food processing technical field.It includes the following weight parts of component: acid-eliminating composition extract: 6 to 9 parts by crude drug amount;Alkalization acid-eliminating regulator: 0.9 to 1.5 parts;Natural sweet and functional agent: 0.5 to 6 parts;And the balance of water;Acid-eliminating composition extract is prepared from chicory, tuckahoe and gardenia;Alkalization acid-eliminating regulator is composed of food-grade sodium bicarbonate and citric acid, both are reacted in water to generate sodium citrate buffer pair, and the mass ratio of citric acid and sodium bicarbonate is 1:(1.2-2.0), and the final pH of the bubble drink is 6.2-6.8.Utilize the sodium citrate buffer generated by alkalization acid-eliminating regulator reaction, fundamentally resolve uric acid crystallization, prevent uric acid kidney stone.Combined with acid-eliminating composition extract, physiological level of synthesis inhibition and excretion promotion and physicochemical level of urine alkalization and solubility promotion are realized.

The present application relates to the technical field of polyglycerol ester production, and particularly relates to a polyglycerol ester distillation production system and a control method; comprising a stirred tank, a multi-stage vacuum pump assembly, a multi-stage distiller, a temperature control assembly and a controller, the stirred tank is used for polyglycerol ester reaction, the material obtained by the stirred tank reaction is subjected to distillation operation in the multi-stage distiller, the multi-stage vacuum pump assembly is used for vacuumizing operation of the multi-stage distiller, and the temperature control assembly is used for temperature regulation of the multi-stage distiller; the controller is in electrical connection with the stirred tank, the multi-stage vacuum pump assembly, the multi-stage distiller and the temperature control assembly respectively; the automation degree of polyglycerol ester production is improved, and the production efficiency is improved.

The utility model discloses a high concentration nitric acid waste liquid treatment is with negative pressure distillation equipment, including distillation jar body, the right side of distillation jar body top is connected with the liquid guide tube, and the right -hand end of liquid guide tube is connected with the left side of the liquid storage jar and sets up, the top of distillation jar body is fixed with motor, and the output end key of motor bottom is connected with the stirring rod, and the stirring rod is located inside distillation jar body, the outside end inside of stirring rod is slidably connected with the cleaning plate, and the outside end of cleaning plate is bonded on the inner wall of distillation jar body and constitutes the cleaning mechanism, and the inner end of cleaning plate is connected with first spring, the inner end of first spring is connected in the inside of stirring rod. This high concentration nitric acid waste liquid treatment is with negative pressure distillation equipment and is installed the cleaning plate, and the stirring rod is rotated through motor drive, thereby making the stirring rod can drive the cleaning plate to clean the impurity adsorbed in the inner wall of distillation jar body and thereby avoids needing manual cleaning operation.

An automated distillation system includes a distillation process under vacuum, a sampling device for extracting a vapor sample of distillate, a gas analyzer for measuring a property of the vapor sample, and a controller for analyzing the property and appropriately adjusting one or more parameters of the system, such as a level of vacuum, in response to the analysis.

The application belongs to the field of high-performance materials, and discloses a PBO polymer continuous controllable polymerization method based on online viscosity balance regulation and control. Through online viscosity monitoring and feedback control in the post-polymerization stage of a double-screw extruder, the end point of polycondensation reaction is accurately regulated, so that stable high-molecular-weight PBO is obtained, and the production efficiency and process flexibility are improved. The system greatly reduces the shutdown and waste caused by process fluctuations, and improves the efficiency and economic benefits of continuous production. By adjusting the target parameters of the control system, the production of PBO polymers with different polymerization degrees can be flexibly adapted, and the process flexibility is significantly enhanced.

A method and system for distilling alcohol in an alcohol production process utilizes mechanical vapor recompression (MVR), by way of an MVR device, such as to improve vacuum distillation column capacity. The MVR device is used as a way to increase vapor pressure / density and reduce vapor volume providing for increased volumetric flowrate and thereby increasing the capacity of a distillation system. In particular, the MVR takes a low value waste heat from stillage evaporators and compresses it to a higher temperature / pressure to create useful energy. By raising the pressure in the beer column with an MVR device, the vapor density increases, vapor volume decreases, and vapor velocity increases so that more vapor can be fed to and through the beer column. That is, additional mass flow can be added to the stillage evaporators and beer column to return the overall vapor velocity at the beer column to the original velocity constraint point. As such, the throughput of the beer column can be increased until it reaches its original velocity design constraint.

The utility model relates to the technical field of decompression concentration device, and disclose ultraviolet absorbent decompression concentration device, including vacuum evaporation jar, the top end cover of vacuum evaporation jar is equipped with the sealing cover, first motor, install in the front and back two sides of sealing cover top, the outer end of plug rod all is connected with second hinged ear, the bottom of assembly station is connected with assembly column, the inside of assembly station and assembly column all inserts and arranges the stirring shaft, the outside both sides of stirring shaft are connected with horizontal vane, the outside both sides of stirring shaft are installed with vertical vane between the position of horizontal vane. This ultraviolet absorbent decompression concentration device, through the rotation of cam driven by first motor, thereby can promote horizontal arm, second motor and the up-down reciprocating motion of assembly station, make horizontal vane and vertical vane carry on the up-down vibration while rotating, break the limitation of traditional single rotation stirring, make the movement track of material in the device more complex and changeable.

A method and system for distilling alcohol in an alcohol production process utilizes mechanical vapor recompression (MVR), by way of an MVR device, such as to improve vacuum distillation column capacity. The MVR device is used as a way to increase vapor pressure / density and reduce vapor volume providing for increased volumetric flowrate and thereby increasing the capacity of a distillation system. In particular, the MVR takes a low value waste heat from stillage evaporators and compresses it to a higher temperature / pressure to create useful energy. By raising the pressure in the beer column with an MVR device, the vapor density increases, vapor volume decreases, and vapor velocity increases so that more vapor can be fed to and through the beer column. That is, additional mass flow can be added to the stillage evaporators and beer column to return the overall vapor velocity at the beer column to the original velocity constraint point. As such, the throughput of the beer column can be increased until it reaches its original velocity design constraint.

This utility model discloses a preparation device for total flavonoid extract from alfalfa, comprising: a pulverizing device, a hot reflux extraction device, a distillation device, a centrifuge, an extraction device, a first waste liquid tank, a first conditioning device, a resin adsorption device, and a second waste liquid tank. The first inlet of the distillation device is connected to the outlet of the hot reflux extraction device; the outlet of the distillation device is connected to the inlet of the centrifuge; the outlet of the centrifuge is connected to the inlet of the extraction device; the inlet of the first waste liquid tank is connected to the outlet of the extraction device; the inlet of the first conditioning device is connected to the outlet of the extraction device; the inlet of the resin adsorption device is connected to the outlet of the first conditioning device; the outlet of the resin adsorption device is connected to the third inlet of the distillation device; and the inlet of the second waste liquid tank is connected to the outlet of the resin adsorption device. This utility model can extract total flavonoid compounds from alfalfa with high extraction efficiency and good purification effect.

Water distillation device, comprising:a body defining a cavity suitable for allowing the distillation of an amount of water to distill, wherein in said cavity are defined a distillation chamber and a condensation chamber, and wherein the condensation chamber comprises a collection portion designed to collect at least temporarily distilled water,a heater, configured to heat the amount of water to distill present, in use, in the distillation chamber,a cooler, configured to cause a condensation of a distillation steam deriving from the heating of the water to distill through the heater,wherein the body comprises a head portion and a main portion, said distillation chamber being realized in substantial correspondence of the main portion,the water distillation device comprising a junction portion angularly joining the head portion with said main portion,the head portion comprising a three ways element in turn comprising a first way, a second way and a third way, wherein said first way faces on said junction portion, and wherein said third way houses said cooler and substantially defines the condensation chamber and a collection portion for the distilled water.