543results about "Steam distillation" patented technology

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 the field of carbon dioxide capture, and discloses a method and system for reducing degradation loss of a flue gas carbon capture absorption solvent, and the method comprises the following steps: carrying out gas stripping deoxygenization on an absorption solvent rich solution to obtain oxygen-containing stripped gas and a spent absorption solution; the method comprises the following steps: carrying out gas stripping and deoxygenization on a CO2-rich absorption solvent rich solution after absorption, regenerating a to-be-regenerated absorption solution to obtain regenerated gas and an absorption solvent barren solution, and extracting the regenerated gas by using oxygen-containing stripping gas at the same time. The oxygen physically dissolved in the rich solution of the absorption solvent is regenerated, the oxygen concentration in the absorption solvent is reduced, the possible degradation reaction is further reduced, the regenerated gas during regeneration is extracted by using the obtained oxygen-containing stripping gas, the regeneration operation temperature is reduced by reducing the operation pressure during regeneration, and the regeneration efficiency is improved. The degradation reaction rate is reduced, so that the purpose of reducing the degradation loss of the flue gas carbon capture absorption solvent is achieved.

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 discloses a novel high-flash stripping tower, which relates to the technical field of sewage treatment and comprises a tower body, a plurality of groups of steam output ends are distributed in the tower body in a circumferential array manner, and each steam output end is connected with the steam input module so as to output steam into the tower body; a spraying module is arranged at the top in the tower body and is used for spraying sewage to be treated into the tower body, and a steam stripping steam pipe is also arranged on one side of the top of the tower body and is used for discharging organic matters subjected to steam stripping; each steam output end is rotationally arranged in the tower body; each steam output end is connected with a rotating module which drives the steam output end to rotate in a reciprocating mode. The phenomenon that heat exchange cannot be generated when sewage drips in the direction away from the steam output ends is effectively avoided, and the steam output ends are arranged in the circumferential direction, so that the heat exchange requirement can be met by arranging a small number of steam output ends.

The invention provides a real-time optimization method for energy consumption in a chemical production process, which comprises the following steps: acquiring real-time purity data of a tower top product, comparing the real-time purity data with a target purity range, judging whether deviation occurs, if deviation occurs, acquiring a heating steam rate, a reflux amount, a feed preheating temperature and a tower plate blockage parameter, and evaluating an operation state; if blockage is detected and the gas-liquid contact efficiency is reduced, it is judged that the separation effect is reduced due to blockage, the blockage position and degree are obtained in real time, and the reflux liquid quantity parameter and the tower top condensation rate are dynamically adjusted to balance the tower top product purity and steam consumption; the efficiency difference between the gas-liquid contact efficiency and the target range is monitored in real time, the matching relation between the tower top product purity and the overall energy consumption is evaluated according to the process parameters and the equipment state, and the operation parameters and the load distribution are adjusted in real time to optimize the energy consumption distribution.

The invention belongs to the technical field of waste recycling, and particularly relates to a method for recycling nitric acid in acid yellow water based on nitration. The method for recovering nitric acid based on nitration acid yellow water comprises the following steps: stirring nitration acid yellow water and toluene or nitrotoluene and other organic extraction agents in a mixer, adding a certain amount of sulfamic acid, fully extracting, standing for layering, and removing the organic extraction agents through a stripping tower to obtain the nitric acid. The acid yellow water after extraction-steam stripping is sent to a nitric acid absorption-concentration tower to obtain concentrated nitric acid, and the concentrated nitric acid is recycled to a nitration reaction unit as a raw material.

The invention relates to the technical field of polyether polyol refining, and particularly discloses a method for continuously removing light components in polyether polyol, which comprises the following steps: mixing polyether polyol and deoxygenated water; according to the method, polyether polyol is continuously added into a light component removal tower and a dehydration tower, light components and water in the polyether polyol are removed through a process combining reduced-pressure flash evaporation, bubbling temperature increasing, steam stripping and nitrogen stripping, and purified polyether polyol is obtained. The difficulty of polyol quality control in the production stage is reduced, and the content of formaldehyde, acetaldehyde and propionaldehyde in the purified polyether polyol product obtained by the method can be as low as 10 ppm or below and is at the advanced level of the industry.

The present disclosure relates to a production process and device for synthesizing bisphenol A by a resin method, including a condensation reaction unit for performing a catalytic condensation reaction between phenol and acetone to generate bisphenol A, a first-stage adduct crystallization unit for mixing a concentrated solution with adduct crystals recycled after melting and then performing adduct crystallization, a liquid-phase dephenolization unit for melting an adduct to yield a bisphenol A product, a secondary adduct crystallization unit for recycling phenol and bisphenol A from a mother solution, a solvent recycling unit for recycling unreacted phenol and unreacted acetone, and discharging phenol-containing process water for sewage treatment, and a cracking and rearrangement unit for recycling the phenol from the mother solution, and convert bisphenol A, 2,4-bisphenol A and the like therein in the mother solution into the bisphenol A.

The invention discloses an energy-saving double-jet-pump steam stripping system which comprises a device body, an annular rotating seat is arranged at the top of the device body, a plurality of vertical rods are connected to the bottom of the annular rotating seat, a plurality of first flow guide discs are fixedly connected among the vertical rods, annular material accumulation discs are arranged at the bottoms of the first flow guide discs, and a plugging disc is arranged in the annular rotating seat. A guide air pipe is fixedly arranged above the plugging disc, an air supply pipe is movably arranged on the plugging disc in a penetrating mode, the top of the air supply pipe is movably arranged in the guide air pipe in a penetrating mode, a lifting device is arranged on the plugging disc, a plurality of second flow guide discs are fixedly connected to the air supply pipe, and every two first flow guide discs and every two second flow guide discs form a group; the upper openings of the second flow guide discs in the same group are located above the lower openings of the first flow guide discs, and the second flow guide discs are provided with material splashing blocks extending into the annular material accumulation discs. The steam stripping system can fully improve the steam stripping efficiency on the premise of avoiding flooding.

The invention relates to the field of steam, in particular to a steam generating device for plant extraction, which comprises a base and an extractor, the extractor is fixedly mounted at the top end of the base, a filter box is fixedly mounted at the top end of the base, one end of a second connecting pipe is fixedly connected with the input end of the extractor, and a first through hole is formed in the bottom end of the filter box. A first exchanger is slidably connected into the first through hole in a sealed mode, a filtering assembly is installed at the bottom end of the filtering box, an auxiliary assembly is installed at the bottom end of the filtering box, and adjusting assemblies are symmetrically installed on the side walls of the filtering box. According to the plant extraction device, the filtering assembly is arranged, in order to not affect normal operation of plant extraction, the second exchanger is used for conducting auxiliary filtering on steam, when the first exchanger is saturated, auxiliary filtering can be conducted through the second exchanger, and under the condition that plant extraction is not affected, the first exchanger can be cleaned and put into use again; the practicability of the device is improved.

The invention relates to a system and a method for producing polyvinyl chloride, and belongs to the field of polyvinyl chloride production. According to the material transportation direction, the system comprises a storage configuration unit, a polymerization steam stripping unit, a vinyl chloride recovery unit, a polyvinyl chloride drying and packaging unit and a wastewater treatment unit, the polymerization stripping unit comprises a polymerization kettle, a kettle top condenser, a discharge tank, a stripping tower storage tank, a polymerization heat exchanger, a stripping tower, a stripping tower condenser and a mixing tank, and the wastewater treatment unit comprises a condensation separator, a water storage tank, a wastewater heat exchanger, a wastewater stripping tower, a wastewater stripping tower condenser and a pretreatment reactor. The kettle top condenser is arranged in the polymerization steam stripping unit, vinyl chloride generated in each link in the system is recycled, meanwhile, residual wastewater in the wastewater treatment unit is treated by using the pretreatment reactor to remove pollutants and then discharged, the vinyl chloride is recycled in the wastewater treatment process, and the wastewater treatment efficiency is improved. And the consumption of vinyl chloride is reduced.

The invention provides a methanol synthesis reactor, system and method, and belongs to the technical field of chemical equipment. The methanol synthesis reactor comprises a shell, the upper part of the shell is provided with a raw material inlet for receiving raw material gas, and the lower part of the shell is provided with a product outlet for discharging mixed products including methanol; each section of reaction unit comprises an upper partition plate and a lower partition plate which are arranged in the shell at an interval; the plurality of reaction tube nests are connected between the upper partition plate and the lower partition plate, and a heat exchange shell pass is formed outside the reaction tube nests and in a cavity among the upper partition plate, the lower partition plate and the shell; the heat exchange medium inlet and the heat exchange medium outlet are formed in the shell, and the heat exchange shell side communicates with at least one temperature control device through the heat exchange medium inlet and the heat exchange medium outlet; and the heat exchange assembly is mounted around the reaction tube nest, and a flow guide channel is arranged between the heat exchange assembly and the reaction tube nest.

The present invention relates to the technical field of hydrogen fluoride preparation, and particularly to a method for separating a mixed solution containing hydrogen fluoride and sulfuric acid. The separation method includes: A) Concentrated fluorosilicic acid and concentrated sulfuric acid react in a reaction device to generate silicon tetrafluoride gas and a sulfuric acid solution containing hydrogen fluoride; B) The first part of the sulfuric acid solution containing hydrogen fluoride is subjected to two-stage separation to obtain hydrogen fluoride gas; the second part of the sulfuric acid solution containing hydrogen fluoride is heated and recycled to the reaction device. The present invention adopts two-stage separation; another path of the sulfuric acid solution containing hydrogen fluoride led out after the main reaction enters the reaction device again after being heated, with relatively low energy consumption. Therefore, the separation method provided by the present invention separates hydrogen fluoride from the sulfuric acid solution with relatively low energy consumption and can reduce fluorine loss.

The invention provides a low-energy-consumption urea synthesis system and method, and the system comprises a high-pressure synthesis unit which comprises a synthesis tower, a condensation part and a stripping tower; cO2 gas, liquid ammonia and methylamine liquid from the condensation part are introduced into the synthesis tower for a synthesis reaction; the synthesis tower is connected with the stripping tower to introduce the liquid generated by the synthesis reaction into the stripping tower; the synthesis tower is connected with the condensation part to introduce NH3 and CO2 gas generated by synthesis reaction into the condensation part; the stripping tower is connected with the condensing part to introduce NH3 and CO2 into the condensing part; a medium-pressure decomposition recovery unit; a low-pressure decomposition recovery unit; and a urea solution processing unit. By simplifying the high-pressure synthesis unit for urea synthesis, arranging the efficient medium-pressure decomposition and recovery unit, designing and transforming the urea production energy-saving system and optimizing the production process, the energy consumption of urea production is greatly reduced, and the urea synthesis process meets the production requirements of energy conservation and low energy consumption.

Process for producing a salt comprising NaCl and / or KCl from the aqueous effluents from one or more organic peroxide production processes, said process comprising the following steps (a) ensuring the pH of the aqueous effluents to be in the range from about 1-5, (b) separating the effluents in a liquid organic layer and an aqueous layer, (c) removing the organic layer, (d) raising the pH of the aqueous layer to a value in the range from about 6-14, and (e) crystallizing the salt from the aqueous layer having a pH in the range from about 6-14.

The invention relates to a BYD (1, 4-butynediol) rectification process and system, and solves the problems of high energy consumption and high steam and circulating water consumption in the existing BYD rectification process. The rectification process comprises the following steps: preheating a mixed solution containing 1, 4-butynediol, methanol, water and formaldehyde from an ethynylation reactor through a feed preheater, feeding the preheated mixed solution into a stripping tower for stripping, and leading out tower kettle liquid of a tower kettle of the stripping tower through a liquid phase outlet, feeding into the feed preheater, carrying out indirect heat exchange with the mixed solution, and further cooling by a stripping tower kettle discharge cooler to obtain a BYD product; a gas phase at the top of the stripping tower is led out through a gas phase outlet, is firstly fed into a compressor for pressurizing and heating, then is fed into a stripping tower reboiler for heat exchange and heat energy recovery, then enters a stripping tower reflux tank, and is fed into an alcohol tower for rectification through a reflux pump. The method has the advantages of simple process, energy saving, consumption reduction, low operation cost, effective recovery of tower top heat energy, saving of a large amount of cooling water, and high product concentration.

The utility model relates to the technical field of chemical engineering, in particular to a low-pressure gas-making furnace outlet oil-containing high-temperature coal gas purification and recovery system which comprises a high-temperature dust removal system, an oil and heat recovery system, a washing tower system and a stripping tower system. According to the utility model, low-grade heat in coal gas can be fully recovered, and energy is fully utilized; and the pollution of organic matters contained in the low-pressure coal gas to the environment is eliminated.

The utility model relates to a polymer volatile matter removal and recovery device, which belongs to the technical field of separation and comprises a primary positive pressure evaporation unit, a secondary vacuum extraction unit and a volatile matter recovery unit, and the primary positive pressure evaporation unit comprises a rising film type preheating evaporator, a flash separation mechanism and a falling film evaporator. And the secondary vacuum extraction unit comprises a feed heater, a gas stripping tower and a gas stripping tower gas-liquid separation module. The volatile matter recovery unit comprises a volatile matter recovery tower, a gas-phase volatile matter recovery module, a high-purity elementary substance or solvent collection module, a heavy component impurity collection module and a volatile matter recovery and reboiling module. According to the utility model, the foaming efficiency and the mass transfer area in the evaporation process are enhanced, the content of volatile matters in a polymer can be reduced to be below 0.1 wt% through two-stage evaporation, the polymer is effectively prevented from being deteriorated at high temperature in the evaporation process, the device is suitable for devolatilization of a heat-sensitive polymer, and meanwhile, the removed monomer and solvent are recycled and reused.

The invention discloses an aldehyde removal tower for removing aldehyde impurities in acetic acid, and relates to the field of aldehyde removal towers, the aldehyde removal tower comprises an aldehyde removal tower body, an alcoholization assembly is fixedly mounted on the upper side in the aldehyde removal tower body, a flow dividing frame A is mounted at the bottom of the alcoholization assembly, a secondary aldehyde removal filter plate is arranged below the flow dividing frame A, and a one-way hopper is mounted at the bottom of the secondary aldehyde removal filter plate; a diversion frame B is installed below the one-way hopper, an evaporation channel is arranged at the bottom of the diversion frame B, an acetic acid collecting pool is fixedly arranged at the bottom of the evaporation channel, and a steam inlet is formed in the side wall of the top of the acetic acid collecting pool. According to the dealdehyding tower for removing the aldehyde impurities in the acetic acid, separation is carried out by utilizing the difference of boiling points of alcohols and the acetic acid, so that the alcohols and other impurities can be fully vaporized, and the acetic acid is less vaporized, so that effective separation of the alcohols and the acetic acid is realized; the acetic acid solution collected in the acetic acid collecting tank is high in purity, a pure acetic acid product can be obtained, and the requirement of industrial production for the purity of acetic acid is met.

An integrated dual-temperature dual-stripping deodorization tower, comprising a skirt (1c), on which a plate tower cylinder (1), a low-temperature stripping tower cylinder (17), and a high-temperature stripping tower cylinder (11) are stacked. The plate tower cylinder (1) is internally provided with: a partition bottom plate (1a); a pre-degassing chamber (2); a central gas extraction cylinder (3), extending upward from a central hole of the partition bottom plate (1a) to a middle-upper part of the plate tower cylinder (1); tower trays (6), located in an annular space between the central gas extraction cylinder (3) and the plate tower cylinder (1), and arranged in a plurality of layers from top to bottom, each tower tray being provided with a stripping pump (7); a falling-film heat exchanger (5), provided with a housing located in the central gas extraction cylinder (3), wherein a lower end of the housing passes through a plate tower lower sealing head, an oil buffer tank (5j) is connected below a lower pipe plate, and a deodorized oil outlet (5k) is provided at the bottom of the oil buffer tank (5j); a deodorized oil inlet pipe (4), connected to a side wall of the plate tower cylinder (1), and provided with an outlet end pointing to the center of an oil distribution tray (5b); and a plate tower oil outlet (1b), connected to the side wall of the plate tower cylinder (1) and located above the partition bottom plate (1a).

Embodiments of the present disclosure can include a system for harvesting salt and generating distilled water from at least one of a produced water and salt water, comprising. A direct steam generator (DSG) can be configured to generate saturated steam and combustion exhaust constituents from the at least one of the produced water and salt water. A separation system can be configured to separate the salt from at least one of the saturated steam and combustion exhaust constituents in brine form or solid form. An expansion turbine can be configured to recover energy from the steam and combustion exhaust constituents.

The application relates to a method and a preparation system for preparing hydrogen fluoride from fluosilicic acid, which comprises a reaction kettle, a hydrogen fluoride absorption tower, a condenser and a silicon tetrafluoride absorption tower which are sequentially communicated; a gas outlet of the reaction kettle is communicated with a gas inlet of the hydrogen fluoride absorption tower, and a gas outlet of the hydrogen fluoride absorption tower is communicated with a gas inlet of the condenser; the generated fluorosulfonic acid in the reaction kettle is introduced into a stripping tower, fluorosulfonic acid generated in a side reaction is re-generated into hydrogen fluoride, the generation of intermediate products is reduced, the process route of the application is free of waste residues and waste gas, and fluosilicic acid is effectively utilized.

A process and apparatus for physically refining a vegetable oil comprising a step of deodourising a crude vegetable oil by steam refining under refining conditions effective to produce a refined vegetable oil having a trans fat content of less than 0.99 wt%. The apparatus may comprise a plurality of volatilisation stages for removal of free fatty acids from a vegetable oil.

A co-processing that includes converting oil drilling waste into a material with technical characteristics that can be used as fuel or alternative raw material for a specific petrochemical process. In the co-process, the components that make up the waste such as solid, oil, and water are recovered. The co-process is a self-sustaining process, reducing gas emissions into the atmosphere, accompanied by savings in the operating cost of the process.

The invention discloses an environmentally friendly and energy-saving ammonia recovery device and method for ammonia-containing condensate in coal chemical industry, comprising a primary stripping tower feed preheater, a primary stripping tower, a stripping gas scrubber, an acid gas heat exchanger, an ammonia-containing condensate tank, a secondary stripping tower, a partial condensate tank, a multi-stage condensation unit, an ammonia refining unit, and an ammonia water preparation unit; the ammonia-containing condensate is firstly concentrated by passing through the primary stripping tower to reduce the processing capacity of the secondary stripping tower, and the concentration of raw materials entering the secondary stripping tower is adjusted to ensure the optimal feed concentration, while reducing investment and energy consumption, high-quality concentrated ammonia water and elemental sulfur are recovered, and the environmental protection hidden danger of ammonia and water in the acid gas flare is solved.

The invention relates to an absorption stabilization system and a separation method of a wax oil hydrocracking unit, which are characterized in that an original naphtha separation tower is changed into a heavy naphtha tower, a feed stream is adjusted into a mixture of top oil of a steam stripping tower, top oil of a pre-fractionating tower and top oil of a main fractionating tower, and heavy naphtha is produced at the bottom of the tower; tower top distillate and tower bottom oil of the deethanizer are mixed and then enter a debutanizer, liquefied gas is obtained at the tower top after separation, light naphtha is obtained at the tower bottom, and part of the light naphtha serves as an absorbent to be recycled. By changing the top oil feeding position of the main fractionating tower, reducing the processing amount and the energy consumption of the debutanizer, and adopting pure light naphtha as an absorbent in the absorption tower, the adsorption effect is better, and the composition of the bottom of the debutanizer is changed, so that a reboiling heat source is changed from middle-section reflux of the main fractionating tower to product diesel oil, and the heat consumption level is reduced. The method does not change the reaction and main fractionating tower system process, has strong applicability in the aspects of new device construction and old device transformation, effectively solves the problem of high energy consumption in the traditional process, and improves the overall benefits of the device.

A process for the preparation of ethylene oxide in which the efficiency of separating ethylene from carbon dioxide is improved.

The invention discloses a distillation and extraction device for producing geranium oil in the technical field of distillation, which comprises a distillation unit, a distillation kettle, a guide part fixedly arranged at the lower part in the distillation kettle, a fixed part rotationally connected above the guide part, and a containing part rotationally connected above the fixed part. The three sets of bearing components used for containing the bay leaf raw materials are obliquely arranged in the vertical direction, and the three sets of bearing components are combined in the horizontal direction in a surrounding mode, so that the bearing components can fully guarantee that the bearing components make contact with bay leaf raw material steam, meanwhile, blocking interference cannot be formed among the bearing components, and the bearing components are not prone to falling off. Furthermore, the bay leaf raw materials at different positions in the distillation kettle can be in contact with steam in time for distillation, and an essential oil and steam mixture after distillation is not hindered to be collected upwards in time, so that the purposes of fully utilizing the internal space of the distillation kettle and remarkably improving the distillation efficiency are achieved.

A process for preparing an ethylene polymer in a suspension polymerization including the steps of separating the formed suspension of ethylene polymer particles in a solid-liquid separator into wet ethylene polymer particles and mother liquor, transferring a part of the mother liquor into a work-up section including an evaporator for producing a wax-depleted portion of the mother liquor, a diluent distillation unit for producing isolated diluent from the wax-depleted portion of the mother liquor, and a wax removal unit operated by direct steam distillation for producing a gaseous hydrocarbon / steam mixture which is condensed and then separated into an aqueous phase and a hydrocarbon phase, wherein a first part of the hydrocarbon phase is transferred to the diluent distillation unit without passing the evaporator for producing the wax-depleted portion of the mother liquor.

The present invention describes a co-processing that consists of converting oil drilling waste into a material with technical characteristics that can be used as fuel or alternative raw material for a specific petrochemical process, in said co-process, the components that make up the waste such as solid, oil and water are recovered; it is a self-sustaining process, reducing gas emissions into the atmosphere, accompanied by savings in the operating cost of the process.