3131results about "Distillation regulation/control" patented technology

The invention discloses a dynamic intelligent control method and system for improving the efficiency of a rectifying tower, particularly relates to the technical field of chemical process control, and is used for solving the technical defect that an operation variable is mismatched with a physical state due to the fact that an existing distributed control system cannot recognize a hidden degradation state of equipment. The method comprises the following steps: acquiring temperature gradient distribution of each tower plate of a rectifying tower, thermal load of a reboiler and tower top condensation load parameters in real time, calculating a mass transfer efficiency offset by combining the temperature gradient distribution to generate a scaling trend index, and synchronously calculating a local entropy yield based on the thermal load and the condensation load to generate a thermodynamic irreversibility index. When the double indexes exceed a preset threshold value, it is judged that a recessive degradation state is entered, then a backflow ratio correction coefficient is reversely derived through a dynamic correlation model, and the correction coefficient is input into a distributed control system to dynamically adjust backflow ratio operation parameters; the product purity is maintained, the tower plate scaling process is obviously delayed, and long-term efficient operation of the rectifying tower is guaranteed.

The invention discloses argon recovery equipment capable of achieving stable rectification and a working method thereof.The argon recovery equipment capable of achieving stable rectification comprises a rectification system, the rectification system comprises a temperature adjusting mechanism and an argon extraction unit, and the argon extraction unit comprises a pure argon tower, an argon tower reboiler, a pure argon pipe set, a first valve set and a stability increasing component; the stability augmentation component comprises a stability augmentation assembly and a temperature detection piece, and the stability augmentation assembly comprises a nitrogen compressor and a nitrogen reboiler. According to the amount of pure argon gasified through heat exchange between pure liquid argon obtained through rectification in the pure argon tower and dried crude argon obtained after cooling in the argon tower reboiler, the supply amount of dry nitrogen is adaptively adjusted through the stability augmentation component so as to adjust the amount of pure argon supplied to the pure argon tower by the nitrogen reboiler; the argon extraction unit and the argon tower reboiler are jointly matched with the actual working condition of the argon tower reboiler, so that the anti-interference capability of the argon extraction unit is improved, the stability of the rectification process is ensured, and the purity of the obtained pure argon is ensured.

To provide a steam distillation system for producing clean water by purifying water.SOLUTION: A fluid steam distillation system is provided, the system comprises: a control system for controlling the fluid steam distillation device, the control system comprising, a release valve, a raw material flow controller for controlling a raw material flow rate valve, and a discharge level sensor connected to the release controller and the raw material flow rate controller. The discharge level sensor transmits a signal related to a discharge level to the discharge controller and the raw material flow rate controller which indicates the discharge level, the raw material flow rate controller drives the raw material flow rate valve on the basis of at least the discharge level sensor signal. The discharge controller drives the discharge valve on the basis of at least the discharge level sensor signal, and the discharge level and the raw material flow rate level are held by using the discharge level sensor signal as input.SELECTED DRAWING: Figure 75

The invention relates to a batch rectification system based on intelligent control, and relates to the technical field of batch rectification. A data acquisition module; the data acquisition module is used for acquiring temperature, pressure, flow and material concentration data in real time; the control module is used for receiving various data of the data acquisition module; a model prediction control algorithm is built in the control module; according to the model prediction control algorithm, a rectification process dynamic model is established, a current system state and a set control target are combined, an optimal control strategy is obtained through rolling optimization calculation, and a control instruction is sent by an execution mechanism based on the optimal control strategy; an execution mechanism; the touch display screen is connected with the control module; the operation parameters of the rectification system are displayed in real time.

The present invention relates to the technical field of solvent purification, and discloses a propylene glycol methyl ether acetate purification control method and a propylene glycol methyl ether acetate purification process, the propylene glycol methyl ether acetate purification control system comprises a rectification device and a rectification control system, the rectification device comprises a rectification tower, a raw material preheater, a condenser, a reflux tank and a reboiler, the rectification control system comprises an environment temperature measuring unit, a tower top temperature measuring unit, a tower bottom temperature measuring unit, a feeding temperature measuring unit and a regulation and control module, the rectification control system is pre-trained with a parameter prediction model, and the parameter prediction model takes the environment temperature, the tower top temperature, the tower bottom temperature and the feeding temperature as input to output regulation and control parameters. The regulation and control parameters comprise the opening degree of a steam valve, the power of a condenser and the opening degree of a return valve, a primary distribution controlled parameter is obtained according to a preset distribution strategy, the primary distribution controlled parameter is specifically the optimized regulation and control parameter, and the tower top temperature is controlled within a preset tower top temperature range according to the primary distribution controlled parameter.

A method for producing a tin compound represented by formula (A1) with a purity of 95 mol % or higher, involves a step of distilling the tin compound, in which the number of plates of the distillation is 10 or more, and the reflux ratio is 30 or less.RSnX3  (A1)In formula (A1), R is an organic group with 1 to 30 carbon atoms, and may be substituted with halogen, oxygen atoms, or nitrogen atoms. X is selected from OR′ and NR′2. R′ is an organic group with 1 to 10 carbon atoms, and part may be substituted with halogen, oxygen atoms, or nitrogen atoms. When there are multiple R′ groups in the molecule, they may have the same or different structures, and they may be bonded to each other to form a cyclic structure.

The invention discloses a multi-effect rectification system control method and a control system thereof.The method comprises the steps that technological parameter data in a multi-effect rectification system are collected in real time, and the technological parameter data comprise the steam flow, the feeding flow, the reflux flow and the recovery quantity of each stage of rectification tower; the temperature and the pressure of each tower plate in each stage of rectifying tower are measured; for each stage of rectifying tower, acquiring static operation parameters of the rectifying tower in a set load section based on a full-automatic load regulation algorithm; the static operation parameters comprise the steam flow, the reflux quantity and the extraction quantity of each stage of rectifying tower; for each stage of rectifying tower, on the basis of the static operation parameters, dynamic operation parameters in the load change process are obtained through a load transition algorithm, and the multi-effect rectifying system is controlled according to the dynamic operation parameters. The method can automatically adapt to feeding change and production load adjustment, optimizes energy efficiency and product quality in the rectification process, automatically adjusts system parameters when the production load fluctuates, and realizes optimal control of energy efficiency and product quality.

The invention discloses preparation equipment and a preparation process for preparing high-purity electronic-grade thionyl fluoride, and the preparation equipment comprises a mixer, the mixer is communicated with a first preheating device, the first preheating device is communicated with a first rectifying tower, the top of the rectifying tower is connected with a condenser, the condenser is communicated with a crude product tank, the crude product tank is communicated with a second preheating device, and the second preheating device is communicated with a second rectifying tower. The second preheating device is communicated with a second rectifying tower, the second rectifying tower is communicated with a third rectifying tower, the third rectifying tower is connected to a storage tank, the storage tank is connected with a vaporization device, the vaporization device is pressurized and then stored in a high-pressure buffer tank, the high-pressure buffer tank is connected with at least three adsorption towers, and the adsorption tower at the rearmost end is connected with a high-pressure product tank. According to the invention, the purity of the finished product is improved, and all raw material components are fully utilized.

The invention provides a preparation device and process of electronic-grade silane. According to the preparation device, a first disproportionation reaction is carried out on the basis of the first reactor, dichlorosilane is rectified and separated to serve as a raw material for a second disproportionation reaction, silane can be obtained on the basis of cheap trichlorosilane and a catalytic reagent, and electronic-grade silane can be obtained on the basis of traditional purification after rectification; based on heat exchange between tower top materials of the rectifying tower I and a tower kettle reboiler of the rectifying tower II, differential pressure thermal coupling integration is realized, condensing equipment and operation steps can be omitted, energy consumption is reduced, and the defects of high preparation cost and high energy consumption of a silane preparation device in the prior art are overcome.

The invention discloses an electronic-grade nitric acid preparation device and method capable of controlling the filtering speed based on temperature difference, and relates to the technical field of nitric acid preparation.The electronic-grade nitric acid preparation device comprises a first-stage rectifying tower and a second-stage rectifying tower, and a first-stage evaporator and a second-stage evaporator are arranged on the outer sides of the bottoms of the first-stage rectifying tower and the second-stage rectifying tower respectively; compared with an existing filtering part, the temperature control assembly is arranged, the temperature control assembly has double functions, on one hand, liquefied nitric acid entering the filter is preheated, and on the other hand, the filtering speed of the filtering assembly on nitric acid is changed according to needs; in addition, a filling disc is accurately rotated through a reversing motor, so that a target material storage cavity is isolated from the rectifying tower main body, and the risk of negative pressure damage or harmful gas leakage in the tower in the traditional dismounting process is avoided.

The invention discloses a purification device for producing electronic-grade hydrofluoric acid, which relates to the technical field of hydrofluoric acid production, and comprises a rectifying tower body, tower plates movably connected in the rectifying tower body at equal intervals, overflow weirs fixedly connected on the tower plates, a rotating speed convenient regulation and control mechanism and a state monitoring feedback mechanism, the follow-up rod and the tower plates installed on the outer surface of the follow-up rod can be driven to synchronously rotate in the rectifying tower body, so that the gas-liquid contact area is increased, the gas-liquid contact time is prolonged, the mass transfer process between gas and liquid phases is promoted, in the rectifying process, the separation efficiency and purity can be improved, impurities in raw materials can be removed more easily, and the product quality is improved. And the rotation of the tower plate can enhance the mixing of the liquid on the tower plate, so that the liquid is more uniformly distributed on the tower plate, the residence time and dead zone of the liquid on the tower plate are favorably reduced, and the separation efficiency is further improved.

The invention relates to the technical field of rectification, in particular to a balanced full-automatic separation control method for a rectifying tower system, the rectifying tower system comprises a rectifying tower I. The control method comprises the following steps: carrying out material balance control and gas-liquid balance control on the rectifying tower I. The gas-liquid balance control is used for controlling the reflux quantity of a material refluxed into the rectifying tower I; the material balance control comprises the following steps: detecting the actual feeding flow of the rectification tower I and the actual liquid level value of a first reflux tank corresponding to the rectification tower I, and calculating and controlling the flow of the material extracted from the tower top of the rectification tower I in real time by combining the set value of the component extracted from the tower top of the rectification tower I and the density of the component extracted from the tower top. Through the preparation method, the stability and the efficiency of a rectifying tower system are improved, and the energy consumption cost and the product volatility problem are reduced.

The invention relates to the technical field of chemical separation, in particular to a cyclohexanone rectification and purification method based on high-tower segmented packing, which comprises the following steps: step 1, filtering a cyclohexanone raw material containing impurities to remove solid particles, and dynamically adjusting the filtering precision according to the viscosity of the raw material; 2, arranging a bottom section, a middle section and a top section in the vertical high tower; the temperature gradient of each section is regulated and controlled through an independent temperature control unit, so that the temperature gradient of the middle section is matched with the relative volatility of the cyclohexanone-light component; 3, dynamically adjusting the reflux ratio based on the real-time detection result of the purity of the tower top distillate, and controlling an intermittent discharge valve according to the density change of the tower bottom heavy component enrichment liquid so as to continuously remove the heavy components; and 4, recycling the waste heat of the steam at the top of the tower for preheating the raw materials, and inhibiting the tower pressure fluctuation through a buffer tank. Through the innovative design of sectional packing of the high tower, the separation efficiency is improved, the energy consumption is reduced, and meanwhile, the equipment reliability is improved.

The invention discloses a vacuum degree micro pressure difference control method and device for desulfurization slurry flash evaporation deep heat recovery, and belongs to the technical field of coal-fired boiler and kiln waste heat heat supply. The system aims at solving the problems that when desulfurization slurry flash evaporation is adopted for boiler flue gas waste heat recovery, much non-condensable gas such as SO2 can escape due to heat release and condensation, the volume of a vacuum system is relatively large, and consequently the high vacuum degree is difficult to maintain by adopting a conventional vacuumizing device, a special micro-differential pressure vacuum pump is added, and the vacuum degree is reduced; extracting non-condensable gas on the liquid level of the condensed water of the last-stage heater, and sending the non-condensable gas to a front-mounted heater matched with the last-stage flash tank; an alkali liquor spraying device is arranged inside or outside the heater to absorb and remove SO2 and other components so as to reduce the partial pressure and the total amount of non-condensable gas, a micro-differential pressure vacuum pump and a conventional vacuum pump are adopted to stably maintain the vacuum degree required by each stage of flash evaporation tank, the temperature of a concentrated slurry outlet of the final stage of flash evaporation tank is greatly reduced, and the concentration effect of the final stage of flash evaporation tank is improved. And optimal operation conditions are created for greatly reducing the exhaust gas temperature and greatly improving the waste heat recovery amount.

The invention belongs to the technical field of intelligent early warning, and particularly relates to an intelligent early warning method for a DMF waste liquid purification and recovery control platform, and the method comprises the steps: carrying out the principal component analysis of long-period historical data, and constructing a principal component transformation matrix of a static reference model; for a moment to be diagnosed, calculating a reconstruction value by using the static reference model to obtain a residual vector, carrying out eigenvalue decomposition on a covariance matrix of a residual matrix of a sliding time window, calculating a drift coherence index according to the distribution of drift eigenvalues, modulating a drift principal component vector of the sliding time window by combining the residual vector, and carrying out diagnosis on the moment to be diagnosed; and obtaining a drift compensation vector, superposing the drift compensation vector with a reconstruction value of a real-time data vector at a to-be-diagnosed moment to obtain an adaptive reconstruction value at the to-be-diagnosed moment, calculating a reconstruction error, comparing the reconstruction error with a fault alarm threshold, judging whether a fault exists at the to-be-diagnosed moment, and performing early warning. According to the invention, the early warning accuracy and robustness are improved.

The invention relates to the technical field of glycerol triacetate preparation, in particular to an esterification phase splitter for preparing glycerol triacetate, which comprises a tower tray arranged in a rectifying tower, umbrella-shaped covers are uniformly distributed on the upper surface of the tower tray, and the tower tray comprises a movable tray, a fixed tray, a riser and an adjusting mechanism. By optimizing the structure of the umbrella-shaped cover and the design of the adjusting mechanism, the problems of a viscous layer and entrainment caused by high viscosity of glycerol triacetate are solved, by reducing the diameter of the bottom of the umbrella-shaped cover and reducing the comprehensive height of the overflow weir, the liquid flowing space is enlarged, the liquid retention time is shortened, and by forming an air inlet groove and an adjusting hydraulic oil cylinder, the liquid retention time is shortened. The gas-phase flow area is increased, gas-liquid contact is optimized, entrainment is reduced, through adjustment of the hydraulic oil cylinder, adaptation to the requirements of different reaction stages is achieved, the height of the downcomer is increased, and the flooding risk is reduced.

The invention relates to the technical field of chemical rectification equipment, in particular to a method and device for improving rectification purity by adjusting the reflux ratio, and the method comprises the following steps: determining the total reflux position and the total extraction position of a liquid separation module; an initial position is set, and the liquid separation module is deflected to the initial position; collecting distillate and analyzing the purity of the distillate; the obtained purity is compared with the set purity, and the deflection direction of the liquid separation module is determined; the liquid separation module is adjusted to deflect towards the determined deflection direction; the measurement position is obtained until the purity of the distillate reaches the maximum; and performing rectification treatment on the to-be-treated liquid according to the screened measurement position so as to improve the rectification purity of the to-be-treated liquid. Through mutual cooperation of all the units, multi-point adjustment of the swing position of the liquid separation module between total reflux and total extraction can be realized, so that the reflux ratio is accurately controlled, and the rectification purity is improved.

The invention discloses a distillation device and method for preparing methylamine methyl squarate, and particularly relates to the technical field of distillation.The distillation device for preparing methylamine methyl squarate comprises a reaction kettle and further comprises a condensation tank, sealing end covers are detachably installed at the two ends of the condensation tank, and flow dividing disc bodies are installed at the two ends in the condensation tank. According to the condensation tank, the design of the multiple condensation pipe fittings is adopted, condensation recycling can be conducted in a flow dividing mode, the condensation structure design is optimized, by arranging the isolation units, steam and condensate can be controlled in the condensation pipe fittings to achieve separation, steam flowing is optimized, steam is prevented from being accumulated and flowing excessively in a concentrated mode, and the condensation effect is improved. The condensation pipe fitting is arranged, condensation operation of the rear section of the condensation pipe fitting is facilitated, the diversion pipe fitting is controlled through the diversion pipe fitting and the suction mechanism, steam of the front section of the condensation pipe fitting is continuously introduced into the middle section of the condensation pipe fitting, concentrated accumulation of the steam in the condensation pipe fitting is avoided, effective diversion can be completed, and the condensation efficiency is improved.

The invention relates to the technical field of chemical engineering, in particular to a simple and safe ammonia residual gas recovery system which comprises a liquid ammonia storage tank (1), an accident ammonia absorption tower (2), a circulating pump set, a gas phase pipeline and a liquid phase pipeline, the circulating pump set comprises a circulating water pump, a compression pump and a waste heat recovery pump, the waste heat recovery pump is connected with a steam valve, and the liquid ammonia storage tank (1) is connected with a gasifier (11). The vaporizer (11) is connected with the buffer tank (12), the buffer tank (12) and the accident ammonia absorption tower (2) circulate pure ammonia gas through a gas phase pipeline, the accident ammonia absorption tower (2) and the liquid ammonia storage tank (1) circulate pure liquid ammonia through a liquid phase pipeline, the absorption tank (21) adsorbs exhaust gas detected by the accident ammonia absorption tower (2), and recovered nitrogen is used for purging the liquid ammonia storage tank (1), so that escape-free environment-friendly treatment and recycling of ammonia are realized.

The utility model relates to the technical field of mixed xylene refining and purifying, in particular to a mixed xylene refining and purifying device. Comprising a shell, the upper end of the shell fixedly communicates with an inlet pipe, the lower end of the shell fixedly communicates with an outlet pipe, a temperature control assembly is arranged in the upper portion of the shell, and an interception assembly is arranged in the lower portion of the shell and communicates with a condenser. By monitoring the temperature of the heat-conducting medium in the oil outlet pipe in real time, the high-temperature gaseous water-containing mixed xylene can be effectively cooled.

The utility model relates to a low-temperature decompression continuous catalytic rectifying tower for synthesizing diacetone alcohol, which comprises a catalytic rectifying tower, a condenser and a built-in reboiler, the catalytic rectifying tower comprises a reaction section and a stripping section, and a feed port of the catalytic rectifying tower is positioned between the reaction section and the stripping section. The external condenser is arranged at the tower top of the catalytic rectifying tower, the inlet end of the condenser is connected with a tower top outlet of the catalytic rectifying tower, the outlet end of the condenser is connected with a tower top side inlet of the catalytic rectifying tower, the built-in reboiler is arranged at the tower bottom of the catalytic rectifying tower, and a tower kettle extraction port is formed in the bottom of the catalytic rectifying tower. According to the utility model, not only is the reaction conversion rate (gt: 99.9%) obviously improved, but also the reaction selectivity reaches 100%, the generation of byproducts and the decomposition of diacetone alcohol are avoided, the reaction energy consumption is reduced, in addition, the product does not need to be subsequently separated, and the catalyst does not need to be separated and recycled.

The invention discloses a system for purifying trimethylsilane containing dichlorosilane impurities, which comprises a reactive distillation column and a purification distillation column, and also discloses a method for purifying trimethylsilane containing dichlorosilane impurities, which comprises the following steps of: feeding trimethylsilane gas containing dichlorosilane impurities into the reactive distillation column; trimethylsilane gas containing dichlorosilane impurities enters the reaction section to react, the dichlorosilane impurities react to generate silane gas and a material containing tetrachlorosilane impurities, the silane gas is discharged from an exhaust port in the top of the reactive distillation tower, and the material containing tetrachlorosilane impurities enters the purification distillation tower from a discharge port in the bottom of the reactive distillation tower; according to the method disclosed by the invention, dichlorosilane is taken as a raw material, the dichlorosilane is taken as a raw material, the dichlorosilane is rectified in a purification rectifying tower and is collected at a tower top collecting port to obtain the high-purity trimethylsilane, the dichlorosilane impurity in the trimethylsilane can be effectively removed through the method disclosed by the invention, the high-purity trimethylsilane with the purity of 99.99% or above is obtained, the yield is greater than 85%, the process is simple, and the cost is low.

The invention belongs to the field of petrochemical industry, and relates to a production method of isononyl alcohol and a production device of isononyl alcohol. The production method of the isononyl alcohol comprises the following steps: C8 olefin, synthesis gas and a catalyst enter a raw material reactor to react to obtain a hydroformylation reaction product, the hydroformylation reaction product enters a product separation unit to separate and remove by-products, and then the hydroformylation reaction product enters an aldehyde hydrogenation unit to react to obtain the isononyl alcohol. The invention has the following beneficial effects: the product separation unit removes most of non-condensable steam, light components and water through a low-vacuum flash evaporation-high-vacuum evaporation two-stage process, reduces the load of a high-vacuum system, and saves energy consumption; the circulation path of the catalyst is shortened through the efficient and rapid separation process of the catalyst, and decomposition of the catalyst is reduced; by applying the vacuum evaporator, low-pressure and low-temperature rapid separation of materials is achieved, the catalyst circulation process is short, the separation temperature is low, and meanwhile energy consumption is saved.

The invention relates to the field of carbon dioxide preparation, in particular to a backflow control method, device and equipment for carbon dioxide purification and a program product. The method comprises the following steps: determining components, inflow, working temperature and working air pressure of raw material gas in the carbon dioxide purification system, and determining constraint conditions of the purification rate after carbon dioxide purification; the working temperature, the working air pressure, the components, the inflow and the different backflow proportions are input into a backflow network model which is trained in advance, and purification rates and system energy consumption corresponding to the different backflow proportions are output through the backflow network model; according to the constraint condition of the purification rate, performing iterative optimization on the reflux proportion by taking the lowest system energy consumption as an optimization target, and determining the reflux proportion when the system energy consumption is the lowest under the condition that the constraint condition is met; carbon dioxide purification is carried out by controlling the opening degree of the backflow channel in the carbon dioxide purification system according to the backflow proportion, so that the system can meet the purification constraint, and the energy consumption of the system is effectively reduced.

The invention relates to a device and a process for purifying impurity gas in a disilane product synthesized from silane. The device comprises a gas inlet system, an adsorption system and a rectification system, the adsorption system comprises a first adsorption tower and a first vacuum pump for desorbing the first adsorption tower, and the first adsorption tower is communicated with the gas inlet system; the rectification system comprises a first rectification tower and a second rectification tower; the first rectification tower is communicated with the first adsorption tower through a first vacuum pump; the second rectifying tower is communicated with the first rectifying tower; the process comprises the following steps: adsorbing sample gas by a first adsorption tower; feeding gas into a first rectifying tower through a first vacuum pump; the first rectifying tower bottom material enters a second rectifying tower; a product disilane gas is obtained from the top of the second rectifying tower. According to the invention, high-content hydrogen, argon, helium and other light components in the product gas are adsorbed, and are primarily separated from silane, disilane, trisilane and the like. And compared with a gas-liquid separation mode only adopting condensation, the energy consumption and the disilane product loss in the purification process can be obviously reduced.

The invention discloses a multi-stage distillation control method and system for fatty acid ester refining, and the method comprises the steps: collecting the temperature, pressure, component concentration and flow data of each tower of a multi-stage distillation system in real time, and obtaining a real-time operation state vector representing the overall operation situation of the current system; according to the real-time operation state vector, obtaining a global optimization instruction set containing optimal set temperature, set pressure, reflux ratio and inter-tower energy flow instructions of each tower; according to the inter-tower energy flow instruction, obtaining a real-time energy flow map for realizing cross-tower energy cascade matching; according to the global optimization instruction set and the real-time energy flow atlas, obtaining a stable rectification operation state matched with the optimization target and the energy flow atlas; and obtaining a system self-healing state for maintaining continuous and stable output of the high-purity fatty acid ester according to abnormal disturbance characteristics continuously monitored in a stable rectification operation state. By utilizing the embodiment of the invention, global cooperative control of multi-stage distillation can be realized, and the separation purity and the energy efficiency ratio are improved.

The invention discloses a storage medium, and an optimization method, device and equipment for a multi-effect rectification process flow. The method comprises the following steps: constructing a mechanism model comprising each rectification tower in a multi-effect rectification system; respectively constructing a first correlation function and a second correlation function; generating a data set of a preset group number of process parameters; the data set serves as input, and the reboiler thermal load of the highest-pressure rectifying tower is obtained through mechanism model calculation and serves as theoretical output; taking the data set of the process parameters and theoretical output as modeling data, and generating a prediction model capable of predicting the thermal load of the reboiler of the highest-pressure rectifying tower according to the process parameters through deep learning; and obtaining predicted parameter values of the controllable process parameters when the maximum pressure rectifying tower reboiler has the minimum energy consumption through the prediction model. According to the method, the number of process parameters participating in calculation and the solving difficulty in subsequent optimization calculation can be greatly reduced, and the calculation efficiency of obtaining the optimal solution can be effectively improved.

The invention discloses a high-viscosity polymerization solution devolatilization system. The high-viscosity polymerization solution devolatilization system comprises a first-stage flash heater, a first-stage flash tank distributor, a first-stage flash tank, a second-stage flash heater, a second-stage flash tank distributor, a second-stage flash tank, a third-stage flash tank distributor and a third-stage flash tank. The invention also provides a high-viscosity polymerization solution devolatilization process which is operated in the system. According to the high-viscosity polymerization solution devolatilization system and process provided by the invention, through static flash devolatilization, dynamic flash does not need to be introduced, and the energy consumption is relatively low; in the high-viscosity polymerization solution devolatilization process provided by the invention, the glue solution content in the polymer solution at the liquid phase outlet of the first-stage flash tank is 50-75% wt, the glue solution content in the polymer solution at the liquid phase outlet of the second-stage flash tank is 85-93% wt, the glue solution content in the polymer solution at the liquid phase outlet of the third-stage flash tank can reach 99.9% wt or more, and the devolatilization efficiency is high.

The utility model relates to the technical field of plant component extraction, specifically to a natural plant effective component extraction device based on membrane separation, comprising a distillation kettle, wherein an exhaust pipe is installed at the exhaust port on the top of the distillation kettle; a collecting box for collecting the extract is provided below the condenser; a purification part is provided below the collecting box; through the provided distillation kettle and condenser, it is convenient to extract the extract by distillation extraction; through the provided collecting box and purification part, it is convenient to purify the extract through multiple microporous filter membranes, thereby facilitating the extraction of effective components in the extract; through the provided double-headed screw and supporting plate, etc., the end cover can be conveniently disassembled and assembled by lifting and lowering the supporting plate. The design changes the connection method between the shell and the end cover of the traditional membrane separator, improves the convenience of disassembly and assembly of the membrane separator, improves the disassembly and assembly efficiency of the microporous filter membrane, and ensures the extraction efficiency of the natural plant effective components.

The invention discloses gamma-butyrolactone single-tower rectification equipment and a treatment process thereof, and relates to the technical field of gamma-butyrolactone preparation.The gamma-butyrolactone single-tower rectification equipment comprises a feeding pump, a rectification tower, a first cooler, a second cooler, a hazardous waste storage tank, a finished product storage tank and a vacuum pump, the rectification tower comprises a tower shell, and tower plates are evenly arranged in the tower shell in the height direction; an overflow weir is arranged on one side of the tower plate, and a downflow plate is connected below the overflow weir; bubble cap assemblies are uniformly distributed above the tower plate, and each bubble cap assembly comprises a breather pipe, a rotary steam distribution component and a cyclone structure; the bottom end of the ventilation pipe is fixed at the top of the tower plate and forms a ventilation channel penetrating through the tower plate; the top end of the ventilation pipe is higher than the highest point of the overflow weir. Through structural innovation and process optimization, high purity of the product is guaranteed, energy consumption and material consumption are reduced, high efficiency, intelligence and environmental friendliness are achieved, and an advanced solution is provided for rectification production of gamma-butyrolactone.