149results about "Steam distillation" patented technology

An apparatus for steam reforming includes a reactor, a condensate separator, a condensate stripper, and a steam boiler. The reactor produces hydrogen and is connected to the condensate separator such that a gas mixture is conducted from the reactor into the condensate separator. The condensate separator and the condensate stripper are connected so that condensate separated out in the condensate separator is conducted into the condensate stripper. The condensate separator and the steam boiler are connected such that cleaned condensate can be conducted into the steam boiler. The steam boiler is connected to the reactor and to the condensate stripper in a steam-conducting manner. The boiler water feed line of the steam boiler is connectable to the condensate stripper in a liquid-conducting manner. A supply from the boiler water feed line is at a same location of the condensate stripper as a supply of the condensate from the condensate separator.

The invention discloses a biomass sugar solution steam stripping-hydrogenation device and a biomass sugar hydrogenation process, the biomass sugar solution steam stripping-hydrogenation device comprises: a steam stripping reaction kettle, the top of the steam stripping reaction kettle is provided with a feed pipe, and the bottom of the steam stripping reaction kettle is provided with a hydrogen inlet pipe; the fixed bed hydrogenation reactor is communicated with the steam stripping reaction kettle; the cooler is communicated with the fixed bed hydrogenation reactor; and the gas-liquid separator is communicated with the cooler. According to the present invention, the steam stripping-hydrogenation process coupling is adopted to achieve the in-situ conversion of the heat sensitive saccharide derivative, the problems of difficult separation, easy heating coking and the like of the saccharide derivative are solved, and the hydrogen circulation, the heat coupling and the integration of the process process are provided to provide the continuous, high-selectivity and low-energy-efficiency new process for preparing the biomass energy and the chemical product.

The invention relates to the field of olefin superimposition, and discloses a method and a system for preparing isomeric C8 olefin through selective superimposition of C4 olefin. The method comprises the following steps: (1) in the presence of a reaction regulator, carrying out a superposition reaction on a C4 raw material; (2) in the presence of a separation regulator, performing first separation on a material obtained by the superposition reaction in the step (1) in a residual raw material separation tower to obtain residual raw materials, a reaction regulator, the separation regulator, isomeric C8 olefin and a superposition product at the tower bottom; (3) sequentially introducing the bottom material of the residual raw material separation tower into a regulator recovery tower and an isomerized C8 separation tower, and carrying out second separation and third separation to obtain an isomerized C8 olefin gas phase; and (4) carrying out first heat exchange on the isomeric C8 olefin gas phase obtained in the step (3) and the residual raw material separation tower side draw-out material. By adopting the method disclosed by the invention, the purpose of further reducing the separation energy consumption can be achieved.

The utility model discloses a methanol-to-gasoline process system, which relates to the technical field of gasoline production, and comprises a fluidized bed reactor, a regenerator, a separator and a stripping tower, the top of the fluidized bed reactor is connected with the separator through a gas output pipeline, the bottom of the separator is provided with a liquid removal bag, and the liquid removal bag is connected with the lower end of the stripping tower; a first conveying pipeline and a second conveying pipeline are further connected between the bottom of the fluidized bed reactor and the bottom of the regenerator, a gas outlet of the separator and a gas outlet in the top of the stripping tower are jointly connected to the first conveying pipeline in parallel, and a gasoline separation tower is further connected to the bottom of the separator; the lower end of the fluidized bed reactor is connected with a methanol input pipeline. The device has the advantages of ingenious structure, few side reactions, good reaction efficiency, high yield and the like, and the catalyst in the system has the advantages of long service life, continuous production, low energy consumption, low production cost, high operation flexibility and easiness in large-scale production.

The invention discloses a tail gas desulfurization coupling carbon capture system and process, and belongs to the technical field of chemical engineering. The invention discloses a tail gas desulfurization coupling carbon capture system which comprises an online combustion furnace, a hydrogenation reactor, a cooling mechanism, a tail gas absorption tower, a tail gas regeneration tower, a carbon capture absorption tower and a carbon capture regeneration tower which are sequentially connected, and the online combustion furnace is connected with a Claus tail gas conveying pipe, a fuel gas conveying pipe and an air conveying pipe; the tail gas absorption tower is connected with a tail gas output pipe; the carbon capture absorption tower is connected with a CO2 gas output pipe; and the carbon capture regeneration tower is connected with an H2S-rich acid gas output pipe. The invention discloses a tail gas desulfurization coupling carbon capture process adopting the system. According to the invention, the Claus sulfur recovery tail gas can be subjected to desulfurization and carbon capture, the amount of tail gas entering the carbon capture unit is greatly reduced, one-time investment and operation energy consumption are saved, and the tail gas can be discharged up to the standard.

A black pepper cannabinoid extract includes beta-caryophyllene and five or more other terpenes. The invention also relates to a method of producing the black pepper cannabinoid extract, including the steps of: extracting black pepper to produce a first extract having fat-soluble components; winterizing the first extract to remove components differentiated by a higher solidification temperature; fractionally distilling the winterized fat-soluble components of the first extract to produce a plurality of black pepper lipid fractions; and blending two or more of the black pepper lipid fractions to produce a black pepper cannabinoid extract. The black pepper cannabinoid extract includes beta-caryophyllene and five or more other terpenes.

The invention belongs to the technical field of equipment control, and particularly relates to a Chinese mugwort essential oil extraction equipment control method and system.The Chinese mugwort essential oil extraction equipment control method comprises the following steps that S1, initial mass distribution and surface near-infrared spectrum data of Chinese mugwort raw materials are obtained, humidity distribution of the Chinese mugwort raw materials is calculated according to the surface near-infrared spectrum data and a preset model, and the humidity distribution of the Chinese mugwort raw materials is calculated; in combination with the initial mass distribution and the humidity distribution, generating a non-uniform injection matrix for differentially supplying initial steam; s2, monitoring the online refractive index of the condensate and the distributed temperature in the cavity in real time; and constructing an essential oil extraction rate curve by using refractive index data. According to the method, the overall extraction efficiency of the raw materials and the yield of the essential oil are improved, meanwhile, the ineffective energy consumption in the later period of the process is reduced, the extraction process can reach a better balance point among the yield of the essential oil, the product quality and the operation cost, and the maximization of the overall economic benefit is achieved.

The invention discloses a conversion condensate treatment device and method, and belongs to the technical field of wastewater treatment. A raw material pretreatment unit of the conversion condensate treatment device is used for pretreating conversion condensate; the steam stripping unit comprises a steam stripping tower, and the steam stripping tower is connected with the pretreatment unit and is used for performing steam stripping on the conversion condensate treated by the raw material pretreatment unit; the side line ammonia recovery unit is located in the middle of the stripping tower, ammonia gas is recovered from the middle of the stripping tower, and residual dilute ammonia water is fed into the raw material pretreatment unit for circular treatment; and the purified water circulating unit is positioned at the bottom of the stripping tower and is used for carrying out waste heat utilization treatment on purified water in the stripping unit. With the adoption of the conversion condensate treatment device and the treatment method, the problems that the recovery rate of ammonia gas in the existing conversion condensate is low, and pollution is easily caused can be solved.

The utility model relates to a production system for improving the utilization rate of butyl acetate esterification reaction raw materials. The raw material preheater is communicated with the esterification reboiler, the esterification reboiler is communicated with the esterification kettle, a discharge port of the esterification kettle is communicated with a feed port of the sulfuric acid trap, and a discharge port of the sulfuric acid trap is communicated with a feed port of the esterification tower; a discharge port of the esterification tower is communicated with a feed port of the tower top condenser, a discharge port of the tower top condenser is communicated with a feed port of the oil-water layering tank, and oil phase and water phase discharge ports of the oil-water layering tank are communicated with a reflux inlet in the top of the esterification tower; a water phase discharge port of the oil-water layering tank is communicated with a feed port of the stripping tower, and a gas phase port of the stripping tower is communicated with the esterification tower. The device disclosed by the utility model has the advantages that the catalyst entrained in the gas phase of the esterification kettle is separated and recycled through the sulfuric acid trap, so that the catalyst is prevented from being lost, the esterification reaction is promoted to move towards the positive direction, and the utilization conversion rate of raw materials is improved; materials dissolved in a water phase are recycled through the stripping tower, so that the loss of the materials is avoided, and the utilization conversion rate of the raw materials is increased to the maximum extent.

The invention discloses a start-up optimization method for an aromatic hydrocarbon combination unit, and belongs to the technical field of petrochemical engineering accessories. Comprising the following steps: S1, sequentially connecting a reformate tower, a stripping tower, a redistillation tower, an adsorption feeding tank, an extract tower and a p-xylene tower to extract a PX product; s2, leading out a first reflux pipeline between the stripping tower and the redistillation tower, and connecting the first reflux pipeline to an adsorption feeding tank; s3, in a start-up preheating stage, feeding a material at the bottom of the stripping tower to an adsorption feeding tank through a first reflux pipeline, synchronously heating the redistillation tower and the p-xylene tower at the moment, and heating the redistillation tower, the stripping tower and the extract tower in a peak shifting manner; and S4, after preheating is finished, closing the first reflux pipeline, recovering the material to be treated by the redistillation tower, feeding the material into the adsorption feeding tank, and continuously producing PX according to the flow of S1. Through process optimization, the core problems that the C8 circulation temperature rise is blocked and the thermal joint pressure difference is difficult to establish in the start-up stage are effectively solved, the operation steps are simplified, the risk of manual misoperation is reduced, the start-up period is remarkably shortened, the energy consumption is reduced, and safety and economic benefits are achieved.

This invention discloses a deodorization tower for high-acid-value rice bran oil production, relating to the field of rice bran oil production technology. The tower includes a tower body with a flow divider plate inside. Two symmetrically arranged "C"-shaped fixing frames are mounted on the inner wall of the tower body. Both ends of the flow divider plate are detachably connected to Velcro fasteners. Below the flow divider plate are several steam nozzles for ejecting steam, each detachably fixed to a support block via a disassembly structure. This invention, through the coordinated arrangement of the fixing frames, Velcro fasteners, fixing plates, sliders, and slide rails, allows for quick disassembly and installation of the flow divider plate. Furthermore, the detachable connection of each steam nozzle to its corresponding support block via the disassembly structure allows for individual replacement of a damaged nozzle, avoiding the need to replace the entire nozzle and mounting frame when a single nozzle is damaged, as is common in existing technologies. The disassembly and installation of the steam nozzles are both simple and quick.

The utility model discloses a heating device for feeding of a water stripping tower, relates to the field of heating devices, and provides the following scheme aiming at the problems that the heating speed is low due to the fact that the heat exchange amount is influenced by improper smoke discharge speed of an existing steam generator, the requirement for energy is high in the using process, and energy conservation and environmental protection are not enough. A front smoke box is arranged on one side of the heat insulation plate, a combustor is arranged on one side of the front smoke box, a rear smoke box is arranged on the other side of the heat insulation plate, a smoke exhaust pipe is arranged at the upper end of the top of the rear smoke box, a heating cavity is formed in the heat insulation plate, a combustion container is arranged in the heating cavity, a front pipe plate is arranged on one side of the combustion container, and a rear pipe plate is arranged on the other side of the combustion container. The energy-saving and environment-friendly boiler has the advantages that the structure is novel, the smoke exhaust speed can be controlled and slowed down, the heat exchange amount is increased, the heating efficiency is high, the energy is saved, the consumption is reduced, the use is economical, scientific and reasonable, and the durability is realized.

The utility model belongs to the technical field of hydrogen peroxide production equipment, and particularly provides a purification tower for purifying industrial-grade hydrogen peroxide, which comprises a tower body, the top of the tower body is provided with an exhaust port, one side of the upper part of the tower body is provided with a transverse feed port, and the bottom of the tower body is provided with a discharge port. A plurality of groups of distributors and structured packing are arranged in the tower body from top to bottom, a collector is arranged between every two adjacent groups, and the distributor in the uppermost group is communicated with the feed port; a transverse steam inlet is formed in one side of the lower part of the tower body, a steam outlet is formed in the other opposite side of the lower part of the tower body, and the steam inlet and the steam outlet are both positioned at the bottoms of the lowest group of distributor and structured packing. According to the hydrogen peroxide purification device disclosed by the utility model, through the multi-stage distribution of the plurality of groups of distributors and structured packing and the arrangement of steam heating, organic matters in hydrogen peroxide can be separated quickly, the content of total organic carbon (TOC) is reduced, and the purification efficiency and effect are improved.

The application discloses a low-temperature methanol washing system and method for treating unconverted gas, wherein the low-temperature methanol washing system comprises a first lean methanol pipe, a circulating gas pipe, a raw material gas cooler, a raw material gas separation tank, a washing tower, a medium-pressure flash tower, an H2S concentration tower, a semi-lean liquid stripping tower, a normal-temperature stripping tower, a hot regeneration tower, a lean methanol tank, a third lean methanol pipe, a CO2 flash tank, a methanol / water separation tower, a first tail gas pipe, a second tail gas pipe and a tail gas water washing tower. The process flow for separately treating unconverted gas is reasonable in design, meets the purification indexes and environmental protection requirements, and fills the blank of the low-temperature methanol washing for separately treating unconverted gas.

The invention relates to a system and a process for recovering gas phase condensation heat at the top of a desorption tower of a urea device. The system comprises a vacuum stripping preconcentrator, a reflux condenser, a vacuum preconcentrator, a medium-pressure methylamine condenser and a liquid ammonia preheater. A urea solution is subjected to first evaporation and concentration in a vacuum stripping preconcentrator, and a gas phase at the top of a desorption tower enters a reflux condenser to be completely condensed after being incompletely condensed in a shell pass; the concentrated urea solution enters a vacuum pre-concentrator for secondary evaporation and concentration, and the gas phase at the top of the medium-pressure decomposition tower and the methylamine solution at the outlet of the medium-pressure methylamine pump enter a medium-pressure methylamine condenser for further condensation after being incompletely condensed in a shell pass. The heat of the intermediate water is used for preheating liquid ammonia and refrigerating a lithium bromide unit, and the produced low-temperature water is supplied to a second-stage evaporative condenser of a urea granulation device. Through reasonable connection and process design, efficient recovery and utilization of low-grade heat energy are achieved, accurate control over the intermediate water flow is achieved, and it is ensured that all equipment operates under the optimal working condition.

The present application relates to a kind of structured packing, mass transfer separation unit, separation method and separation equipment.Structured packing includes a plurality of adjacent wire mesh layers;The wire mesh layer has corrugated structure;The wire mesh layer is obtained by hexagonal weaving of metal wire.Mass transfer separation unit includes liquid distributor, support and structured packing;The liquid distributor is located above the structured packing, and the support is located below the structured packing.The present application utilizes the structural characteristics of hexagonal weaving wire mesh, enhances the wetting effect of liquid on the surface of structured packing, can realize higher separation efficiency under small liquid system, meets separation requirement, while not sacrificing pressure drop, also does not increase additional investment cost.

The utility model relates to the technical field of fresh bamboo juice production, and discloses a dry distillation, condensation and collection device which comprises a device body, a controller and a box door are installed on the front side face of the device body, a heating bin, a cooling barrel and a collection tank are installed in the device body, and a heating rod and a bearing plate are installed in the heating bin. A dry distillation pipe is installed on the top face of the bearing plate, and a sealing plug is installed at the right end of the dry distillation pipe. According to the utility model, the two heating rods are started after the dry distillation pipe is placed on the plurality of bearing plates, and the heating rods can provide stable and uniform heat for the dry distillation process, so that the materials can be ensured to be continuously in a proper temperature condition in the dry distillation process, and the smooth dry distillation reaction is ensured; and the temperature sensor can accurately measure the temperature change in the dry distillation process in real time and feed back a temperature signal to the controller, so that an operator can know the temperature condition in the heating bin in time to carry out corresponding operation and adjustment.

Methods and systems for extracting additional beneficial lipid-soluble heavy compounds from plant material in an environmentally sustainable manner. A method includes preparing a solution that includes a solvent comprising one or more of a monoterpene, a monoterpenoid, a sesquiterpene, or a sesquiterpenoid. The solution further includes a solute comprising a plant material. The method includes extracting one or more compounds from the plant material using the solvent comprising the one or more of the monoterpene, the monoterpenoid, the sesquiterpene, or the sesquiterpenoid.

Systems and methods for processing mixed plastic waste can include one or more reactive extruders for initially dechlorinating and depolymerizing the mixed plastic waste and a catalytic reactive distillation column for further processing the dechlorinated, depolymerized mixed plastic waste. Depolymerization of the mixed plastic waste by one or more of the disclosed systems and methods produces at least a naphtha mixed feedstock and increases its yield.

The utility model relates to the field of separation and purification, in particular to a system for separating and purifying dilute sulphuric acid. Comprising a heat exchanger and a stripping tower which are connected, a gas outlet is formed in the top of the stripping tower, a mixed acid spraying opening is formed in the upper section of the stripping tower, an inert gas inlet is formed in the lower section of the stripping tower, and a dilute sulfuric acid outlet is formed in the bottom of the stripping tower. An outlet of the primary cooler is respectively connected with a downstream pipeline and a dilute sulphuric acid spraying opening in the middle lower part of the stripping tower; and the upper section of the stripping tower is provided with at least two mixed acid spraying ports with different vertical heights. The system disclosed by the utility model is extremely simple, good in gas stripping effect, high in dilute sulphuric acid concentration, high in fluorine recovery rate and good in process adaptability.

The present invention addresses to a process for the production of aromatic compounds from streams containing linear chains with 5 to 18 carbon atoms, of fossil or renewable origin, and application in the field of catalytic cracking aiming at a regenerator operation at much lower temperature, between 480° C. and 620° C., preferably the temperature should be between 500° C. and 600° C. The coked catalyst generated by the cracking of light streams with low potential for delta coke generation can have the combustion effected at a lower temperature. The regeneration temperature must be at least 40° C. and at most 100° C. higher than the reaction temperature, keeping the catalyst circulation high to maintain the energy balance in the reaction section. The minimum regeneration temperature can be ensured by installing an air preheating furnace before entering the regenerator and passing through the air distributor inside the regenerator. The used catalyst must contain zeolite with pores of intermediate size. Such conditions greatly favor the production of aromatics and the octane rating of the produced naphtha.

The application belongs to the technical field of spinning dope production, and discloses a polymerization liquid monomer removal system and a polymerization liquid monomer removal method. The polymerization liquid monomer removal system comprises a monomer removal tower, a reboiler, and a discharge port. The polymerization liquid enters the top of the monomer removal tower. The reboiler is in communication with the lower region of the monomer removal tower and transports solvent vapor into the monomer removal tower. The solvent vapor contacts the polymerization liquid to separate monomers in the polymerization liquid. The bottom of the reboiler has a discharge port. During the monomer removal process, liquid solvent continuously enters the reboiler, and the material at the bottom of the reboiler is continuously discharged through the discharge port. In the application, the material at the bottom of the reboiler is continuously discharged through the discharge port during the monomer removal process, which can timely discharge the precipitated impurities, ensure the purity of the solvent vapor, and further avoid the impurities entering the monomer removal tower with the vapor to affect the quality of the polymerization liquid.

The invention provides a low-energy-consumption urea production process by a CO2 stripping method. A related process device comprises a high-pressure system, a medium-pressure system, a low-pressure system, a micro-positive-pressure system, a vacuum concentration system, an ammonia and carbon dioxide recovery system and the like. Wherein the high-pressure system consists of a urea synthesis tower, a high-pressure washing condensation reactor and a high-pressure COstripping tower; the high-pressure washing and condensing reactor has three functions of condensing high-pressure ammonium carbamate liquid, dehydrating ammonium carbamate to generate urea, and washing ammonia gas and carbon dioxide gas. Decomposition of ammonium carbamate in the urea solution is completed through a heating decomposition process of the medium-pressure decomposition tower and the low-pressure decomposition tower; the moisture of the urea solution is evaporated by adopting processes such as micro-positive pressure flash evaporation, pre-concentration evaporation, concentration evaporation and the like. In the recovery system, processes such as micro-positive pressure flash evaporation condensation absorption, low-pressure washing absorption, low-pressure methylamine condensation absorption, medium-pressure methylamine condensation absorption, medium-pressure washing absorption and high-pressure washing absorption are used for effectively recovering ammonia and carbon dioxide.

The utility model discloses a byproduct hydrochloric acid dechlorination device, including stripping column and with stripping column cooperation uses reboiler, the downstream of stripping column is provided with cooler and intermediate storage tank in proper order, and the downstream connection dechlorination reactor and finished product storage tank of intermediate storage tank, be equipped with absorber between intermediate storage tank and dechlorination reactor. The utility model discloses through the cooperation use of stripping column and reboiler to byproduct hydrochloric acid stripping, and the volatilization removes a part of free chlorine, and the volatilization of a small amount of organic matter carbon tetrachloride dissolved in hydrochloric acid, then after the stripping of sodium sulfite solid and free chlorine are added in dechlorination reactor and react, remove free chlorine, therefore, the utility model discloses through above -mentioned device effectively removes organic matter and free chlorine and obtains colorless transparent finished product hydrochloric acid, and the slight reduction of hydrochloric acid from initial acidity 32 33% to acidity 31 32%. The dechlorination device can complete dechlorination and remove organic matter under the condition that the acidity of hydrochloric acid is guaranteed, and the device structure is simple, is worth the wide promotion.

Provided is a method for preparing synthesis gas, and more particularly, a method for preparing synthesis gas including: supplying a cracked gas stream discharged from a cracking furnace of a naphtha cracking center (NCC) process to a gasoline fractionator, separating a side discharge stream from the gasoline fractionator using a first stripper, and separating a lower discharge stream from the gasoline fractionator using a second stripper, wherein a mixed oil stream of a PGO stream and a PFO stream formed by controlling a flow rate of each stream are used.

The invention discloses a reaction tower with combined pickling and purifying functions for acrolein production, and belongs to the technical field of acrolein treatment. Comprising a combined absorption tower, the combined absorption tower is provided with a purification tower, the purification tower is fixedly connected with a liquid inlet pipe used for conveying an acrolein solution into the purification tower, the combined absorption tower is communicated with the liquid inlet pipe, two sliding discs are connected into the purification tower in a sealed and sliding mode, and the space between the two sliding discs is used for being filled with filler. Supporting pipes which are distributed at equal intervals in the circumferential direction are fixedly connected between the two sliding discs, through grooves are formed in the supporting pipes, and the supporting pipes which are distributed at equal intervals in the circumferential direction are jointly and fixedly connected and communicate with a flow guide shell which slides in a sealing mode with the purifying tower. The acrolein is subjected to acid pickling and purification through the combination of the absorption tower and the purification tower, the continuity of the processing process is guaranteed, water vapor is conveyed to the middle of the filler through the supporting pipe and the through groove, the amount of the water vapor making contact with an acrolein solution is increased, and the acrolein purification efficiency is improved.

A system and devices for treating and purifying fluids such as water. The system includes multiple devices and moves water through the devices. The system may include a steam boiler. The steam boiler may be connected to a steam stripper. Fluids may flow through the steam boiler and fed into the bottom of the steam stripper. The system may have salt treatment modules and carbon compound modules. The system may include desalination modules. The system may provide outputs of purified water, salt, and / or concentrated salt brine.

The application relates to the technical field of singling equipment, and discloses singling equipment and a singling method applied to preparation of strong weather-resistant styrene-acrylic emulsion, which comprises a singling mechanism arranged on the top of a box body and extending into the box body, and used for singling treatment of the strong weather-resistant styrene-acrylic emulsion. The heating assembly of the singling mechanism is arranged between a material conveying assembly and an auxiliary assembly, so that the steam conveyed by the heating assembly can be used for preheating the strong weather-resistant styrene-acrylic emulsion and an initiator, thereby improving the singling efficiency of the monomers in the strong weather-resistant styrene-acrylic emulsion. The steam, the strong weather-resistant styrene-acrylic emulsion and the initiator are contacted in a ring-shaped spraying mode, the contact area is increased, and the singling efficiency of the monomers is further improved. The filtering mechanism is used for filtering the strong weather-resistant styrene-acrylic emulsion during conveying, so that the caked impurities in the strong weather-resistant styrene-acrylic emulsion do not affect the singling effect.