277results about "Steam distillation" patented technology

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

The utility model discloses a cyclopropylamine stripping tower which comprises a stripping tower main body, a plurality of packing layers arranged at intervals are arranged in the stripping tower main body, a liquid inlet pipe is arranged above the packing layer positioned at the topmost part, the liquid inlet pipe is divided into an inlet and an outlet, the inlet is positioned outside the stripping tower, the outlet is positioned inside the stripping tower, and the liquid inlet pipe is connected with the stripping tower main body. A gas inlet pipe is arranged below the filler layer located at the bottommost part, a liquid outlet pipe is arranged at the bottom of the stripping tower, a gas outlet pipe is arranged at the top of the stripping tower, and an exhaust plate is arranged between every two filler layers; each exhaust plate comprises a rotating disc rotationally mounted in the stripping tower, a fixed disc fixedly arranged in the stripping tower and a driving part, the rotating disc is rotationally arranged on the fixed disc, and corresponding through holes are formed in the rotating disc and the fixed disc. And the size of the vent hole is changed in a rotating manner, so that the use flexibility is improved.

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.

An apparatus, in particular for separating and purifying styrene from a crude mixture comprising styrene, comprises a steam generating unit and a divided wall distillation column wherein the divided wall distillation column comprises a divided wall comprising a first portion, the first portion extends at least substantially vertically downward from a point located below the top of the distillation column to a point located above the bottom of the divided wall distillation column so as to subdivide the divided wall distillation column into: a top section located above the dividing wall; a bottom section below the partition wall; and a middle section comprising a first middle sub-section on one side of the first portion of the partition wall and a second middle sub-section on an opposite side of the first portion of the partition wall, where the partition wall further comprises a second portion connected to an upper portion of the first portion of the partition wall, at least one part of the bottom section, which extends at least over 10% of the height of the divided wall distillation column, has a smaller cross-sectional area than the middle section of the divided wall distillation column, and wherein at least one part of the bottom section, which extends at least over 10% of the height of the divided wall distillation column, has a smaller cross-sectional area than the middle section of the divided wall distillation column, the dividing wall type distillation column further comprises a feed inlet pipeline, an extraction solvent inlet pipeline, a steam inlet pipeline connected with the steam generating unit, an overhead outlet pipeline, a bottom outlet pipeline and a side outlet pipeline connected with the second middle sub-section of the dividing wall type distillation column, the plant further comprises a side condenser and a liquid-liquid separator, where the side outlet line is connected to the side condenser and downstream thereof to the liquid-liquid separator, where the liquid-liquid separator is connected to the water line leading into the steam generating unit.

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.

Processes, systems and equipment are for treating a digestate resulting from the thin stillage of a bioethanol plant. They can include a decarbonizer system to reduce the carbon and water footprint in an ethanol plant and associated biogas plant by treating a digestate stream resulting from a thin stillage digester. The treatment includes heating the digestate stream to decompose ammonia bicarbonate contained in the digestate stream into ammonium and bicarbonate; and contacting the heated digestate stream with air so that a first portion of the ammonia is desorbed from the heated stream to mix with the air.

This invention relates to a BYD (1,4-butynediol) distillation process and system, solving the problems of high energy consumption and high steam and circulating water consumption in existing BYD distillation processes. The distillation process includes a mixed solution containing 1,4-butynediol, methanol, water, and formaldehyde from an acetylation reactor, which is preheated in a feed preheater and then fed into a stripping tower for stripping. The liquid at the bottom of the stripping tower is drawn off through the liquid phase outlet and sent to the feed preheater for indirect heat exchange with the mixed solution. It is then further cooled by the stripping tower bottom outlet cooler to obtain the BYD product for external delivery. The vapor phase from the top of the stripping tower is drawn off through the vapor phase outlet, first sent to a compressor for pressurization and heating, then sent to the stripping tower reboiler for heat recovery, and then enters the stripping tower reflux tank, before being pumped to the alcohol distillation tower. This invention features a simple process, energy saving and consumption reduction, low operating costs, effective recovery of top heat energy, significant savings in cooling water, and high product concentration.

The utility model belongs to the technical field of production of chemical raw materials, and particularly relates to a device for recovering chloroacetic acid from heavy components of chloroacetic acid, which comprises a stripping tower, the bottom of the stripping tower is connected with a flash tank through a discharge pipe, the top of the flash tank is provided with a venturi ejector, and the venturi ejector is provided with a gas ejector pipe and a steam inlet pipe. The top of the stripping tower is sequentially connected with a cooler and a storage tank through an exhaust pipe, a bottom outlet of the storage tank is connected with the upper part of the stripping tower through a return pipe, the return pipe extends to the inner cavity of the stripping tower and is connected with a liquid distributor, and a feeding pipe is arranged on the side wall of the stripping tower. The device disclosed by the utility model can be used for recovering chloroacetic acid in the heavy components of chloroacetic acid, avoiding resource waste caused by treatment of the heavy components of chloroacetic acid, saving the use cost of materials and simultaneously reducing environmental pollution.

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.

The utility model discloses a styrene production device with a condensate storage pool, which comprises a catalytic dehydrogenation reactor, a condenser, an oil-water separation tank, a rectifying tower, a stripping tower, an organic component storage tank and the condensate storage pool which are communicated, and an upper water baffle and a lower water baffle are arranged in the condensate storage pool at intervals. In winter or when freezing occurs, heat energy of condensate can be reasonably utilized for heat tracing of pipelines and instruments, and the using amount of low-pressure steam is saved.

The invention discloses a dealcoholization and dehydration device for plasticizer production, and relates to the technical field of plasticizer production devices. When the dealcoholization and dehydration device is used for dealcoholization and dehydration, high-temperature water vapor is introduced into the dealcoholization tank through the water vapor forming device, high-temperature gas is introduced into the dealcoholization tank through the hot air forming device after the high-temperature water vapor is continuously introduced for a period of time, and materials in the dealcoholization tank are controlled to be discharged into the dehydration tank after the high-temperature gas is continuously introduced into the dealcoholization tank for a period of time; and after dehydration in a dehydration tank, discharging to obtain the required plasticizer. According to the dealcoholization and dehydration device, high-temperature water vapor and hot air are introduced in a staged mode to take away alcohol and water vapor residues, meanwhile, the dehydration tank is used for stretching for dehydration, and then efficient dealcoholization and dehydration are completed in the using process.

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 utility model relates to a device for preparing ammonia water from low-concentration ammonia steam condensate, which is characterized in that a deamination stripping tower is connected with a condenser, a pressure indication regulating valve and an electromagnetic three-way valve are arranged between the deamination stripping tower and the condenser, the third end of the electromagnetic three-way valve is connected with the outside, a separator is connected with the condenser, and the separator is connected with the condenser. The separator is connected with a liquid seal tank, the liquid seal tank is connected with a positive pressure storage tank, an ammonia water density meter is arranged on the positive pressure storage tank and is used for measuring whether the washed ammonia water reaches the standard or not, the finished product after reaching the standard enters the ammonia water storage tank, and the ammonia water which does not reach the standard continuously returns to the deamination stripping tower through a process condensate storage tank for washing and circulating positive pressure concentration; continuous and stable operation is guaranteed, the efficiency and the finished product conversion rate are effectively improved, and meanwhile discharged waste water meets the discharge standard.

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.

The present invention provides an energy-saving acidic water stripping system and method, and relates to the technical field of acidic water stripping, the energy-saving acidic water stripping system comprises: a stripping tower, the bottom of which is provided with a stripping steam inlet pipeline and a purified water outlet pipeline, the side wall of which is provided with an acidic water inlet pipeline and a middle section reflux pipeline, and the top of which is provided with an acidic gas outlet pipeline; a liquid storage tank; a first heat exchanger, a first heat release medium inlet and a first heat release medium outlet are connected with the middle section backflow pipeline, and a first heat absorption medium inlet and a first heat absorption medium outlet are connected with a backflow pipeline of the liquid storage tank; the second heat exchanger, the second heat release medium inlet and the second heat release medium outlet are respectively connected with a purified water outlet pipeline and a stripping steam inlet pipeline, and the second heat absorption medium inlet and the second heat absorption medium outlet are connected with an output pipeline of the liquid storage tank; the problems that in the prior art, an acidic water stripping device not only has low-temperature heat loss, but also needs high energy consumption are solved.

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.