84 results about "Fractionating column" patented technology

The utility model discloses a fractionating tower, which relates to the technical field of fractionating equipment and comprises an alloy tower body and a filler block, one side of the alloy tower body is connected with a discharge pipe fitting in a penetrating manner, the top end of the alloy tower body is connected with a material injection pipe fitting in a penetrating manner, and a positioning mechanism is arranged in the alloy tower body. The positioning mechanism is used for positioning the bottom ends and the top ends of the filler blocks with different sizes so as to meet the use requirements of quick disassembly and distance adjustment of the filler blocks with different sizes, a flow dividing mechanism is arranged under the filler blocks, and the flow dividing mechanism is used for carrying out flow dividing treatment on liquid filtered by the filler blocks, so that the use requirements of quick disassembly and distance adjustment of the filler blocks with different sizes are met. And therefore, blockage of the liquid in the alloy tower body in the flowing process of the liquid is avoided. The supporting bases arranged on the two sides vertically ascend and descend on the outer sides of the vertical guide plates, then the distances of the multiple sets of filler are adjusted, dynamic balance can be kept between the first filler plate and the second filler plate during mass transfer, the first filler plate and the second filler plate are prevented from deforming, and the service life of the filler is prolonged.

The present disclosure provides methods and systems for producing a C4+ compound, including the steps of: (i) reacting a feed stream comprising C1+O1-3 hydrocarbons in the presence of an acid condensation (AC) catalyst at a condensation temperature and condensation pressure to produce an AC product stream including the C4+ compound; (ii) fractionating AC product stream into an AC liquid product stream including organic products and a vapor stream; (iii) fractionating the AC liquid product stream by a fractionation column into a liquid C4+ compound product stream and a gaseous overhead stream; (iv) cooling the gaseous overhead stream to produce a liquid reflux stream and a gaseous vent stream; (v) recycling a first portion of the liquid reflux stream to the fractionation column for the fractionation in step (iii); and (vi) recycling a second portion of the liquid reflux stream to the feed stream for the reaction in step (i).

Processes and apparatuses for treating NOx from a carbon dioxide stream. Prior to separating carbon dioxide and NOx, NOx is converted to nitrogen gas in an NOx conversion zone, which may include an SCR reactor and / or CO boiler. A carbon separation zone which may include one or more fractionation columns produces a CO2 stream and an NOx stream. The NOx is passed back to the NOx conversion zone.

A system and methods for distillation and recovery of ethylene from a cracked hydrocarbon feed material, including a fractional distillation column having a series of trays and multiple distillation outlets, each located at a different tray location or level along the fractional distillation column. The fractional distillation column is controlled to optimize the output of ethylene, including altering operation of the fractional distillation column to enable extraction of streams of ethylene of different selected purity levels and in different phases from the fractional distillation column.

Processes and apparatuses for treating NOx from a carbon dioxide stream. Prior to separating carbon dioxide and NOx, NOx is converted to nitrogen gas in an NOx conversion zone, which may include an SCR reactor and / or CO boiler. A carbon separation zone which may include one or more fractionation columns produces a CO2 stream and an NOx stream. The NOx is passed back to the NOx conversion zone.

The utility model relates to the technical field of chemical production equipment, and discloses a high-boiling-point aromatic hydrocarbon fractionating tower device with a self-cleaning function, which comprises a shunting tower main body, cleaning and draining mechanisms are arranged at the upper end and the lower end of the shunting tower main body, the shunting tower main body comprises a tower body, and a first assembly hole is formed in the center of the top end of the tower body; a plurality of second assembly holes are formed in the periphery of the top end of the tower body at equal angles, and four drain outlets are formed in the periphery of the inner bottom wall of the tower body at equal angles. According to the utility model, the design of a spraying mechanism for optimizing cleaning liquid is adopted, the annular high-pressure spraying machine is arranged at the top end of the tower body, the plurality of high-pressure nozzles are annularly arranged at the bottom end of the tower body at equal angles, and the number and the distribution density of the nozzles are increased, so that multi-directional spraying is realized, the cleaning liquid can reach each corner in the tower, and the cleaning effect is enhanced; in addition, four sewage draining outlets are annularly formed in the bottom end of the tower body at equal angles, so that waste water and waste can be quickly discharged after cleaning, and convenience is achieved.

This document discloses a system and method for separating cracked hydrocarbon mixtures. A main fractionation column separates the cracked hydrocarbon mixture into top, side, and bottom fractions containing C1 to C6+ hydrocarbons. A top condenser and high-pressure separation system partially condenses the top fraction and compresses the uncondensed vapor to produce a compressed gas fraction and a compressed liquid fraction. A first distillation column receives the compressed liquid fraction and separates it into a first top vapor and a first bottom fraction. A second distillation column separates the first bottom fraction into a second top fraction and a second bottom fraction. An absorber receives a portion of the second bottom fraction and the side liquid fraction and contacts it in countercurrent flow with the compressed gas fraction, thereby producing an absorber top fraction and absorber bottom fraction containing exhaust gas. Such a system can be used to integrate existing FCC / RFCC units with petrochemical complexes.

The present application relates to a kind of organic amine neutralizer for atmospheric and vacuum unit and its application, belong to neutralizer technical field.The neutralizer of the present application is compounded by multiple organic amines, and the main component is ethylene amine and ethanol amine.Directly according to formula, single-component organic amine is added to compound, it can also be prepared by two-step combination of first synthesis and then compounding, the latter can reduce cost, with higher economic benefit.The organic amine neutralizer of the present application is applied to refinery atmospheric and vacuum unit fractionating column top volatile line corrosion prevention, can replace conventional ammonia water.It has the following advantages: suitable for tower top volatile line environment in distillation range;easily soluble in water at dew point temperature, not corrosive in dew point area;with low melting point, good water solubility, no ammonium salt scale, not accumulated, not blocked;stable pH, easy to control;safe and environmentally friendly;good corrosion inhibition effect;excellent performance, high cost performance, etc.

Process for the production of a product 2-alkylalkanol stream A process for the production of a product 2-alkylalkanol stream is disclosed. The process comprises feeding a polished 2-alkylalkanol stream to a lights removal distillation column. A lights stream is withdrawn from at or near the top of the lights removal distillation column and a heavies containing stream is withdrawn from a first position at or near the bottom of the lights removal distillation column. The product 2-alkylalkanol stream is withdrawn as a liquid side draw from a second position above the first position.

The present invention relates to a process for preparing one or more ethers, the process comprising (i) preparing a feed stream comprising an alcohol, an epoxide, and a catalyst; (ii) feeding the feed stream prepared in (i) into a reactor, and subjecting the feed stream to reaction conditions, obtaining a product stream comprising the one or more ethers; (iii) feeding the product stream obtained from (ii) into a first fractionating column, and separating the product stream into a first overhead stream and a first bottoms stream; (iv) preparing a first H2O-containing stream; (v) transferring heat from the first overhead stream obtained from (iii) to the first H2O-containing stream prepared in (iv), obtaining a heated first H2O-containing stream and a liquid first over-head stream. It has been surprisingly found that by integrating an open loop heat pump in the process for preparing one or more ethers, a portion of the heat can be recovered by heat transfer to an H2O-containing stream.

The utility model relates to the technical field related to air treatment, one embodiment of the utility model provides a multifunctional fractionating tower which comprises a tower body and a top cover, the top cover is arranged at the top of the tower body, a condensed gas inlet pipe and a liquid nitrogen inlet pipe are arranged on the outer wall of the tower body, a fractionating treatment assembly is arranged in the tower body, a liquid nitrogen treatment assembly is arranged on the tower body, and the liquid nitrogen treatment assembly is arranged on the tower body. The fractionation treatment assembly comprises a plurality of tower plates which are sequentially arranged at the two ends of the inner wall of the tower body downwards, flow distribution plates are arranged on the side surfaces of the tower plates, and a plurality of flow distribution grooves are formed in the surfaces of the tower plates. According to the technical scheme, the technical problems that in the prior art, a traditional fractionating tower is poor in performance in the aspect of energy consumption, a large amount of energy needs to be consumed in the air treatment process, the energy utilization efficiency of the fractionating tower is low, and consequently the production cost is high are solved.

This invention relates to the field of fractionation tower technology, and more particularly to an apparatus for MTBE production and liquefied petroleum gas (LPG) fractionation. The apparatus includes a tower body connected to a feed pipe, an exhaust pipe, and a drain pipe. The tower body is fixedly connected to spaced-apart first trays, each tray having a liquid outlet. Each first tray is fixedly connected to a partition plate and has several first through holes. A gas distribution shell is disposed within each of the first through holes. The tower body is equipped with an electric actuator in the same number as the first trays. Each partition plate has a first liquid passage hole. A sealing plate is hinged to the telescopic end of each electric actuator, and the sealing plate is rotatably connected to an adjacent partition plate. This invention intermittently opens the electric actuators, causing the sealing plate to periodically block the first liquid passage holes on the partition plate, reducing the time the liquid flows within the tower body, extending the gas-liquid contact time, and ensuring thorough fractionation.

According to the four-working-condition miniature air separation equipment and method, by dynamically adjusting an airflow path, efficient production and flexible switching of four products including oxygen, nitrogen, liquid oxygen and liquid nitrogen are achieved, and the equipment applicability and the energy efficiency level are remarkably improved. The air separation equipment mainly comprises a compression system, a pre-cooling system, a purification system and a fractionating tower system, wherein the fractionating tower system comprises a heat exchange system, a rectification system and a storage output system. The miniature air separation equipment breaks through the limitation of single working condition of the traditional miniature air separation equipment, has the advantages of small size, high energy efficiency, flexibility in operation, movability and the like, can be widely applied to the fields of industrial gas production, medical oxygen supply and scientific research, and remarkably reduces the investment and operation cost of multi-product production equipment.

The utility model discloses a fractionating tower for petroleum refining, which belongs to the technical field of petroleum processing equipment and comprises a fractionating tower body for petroleum refining and processing and a circular fixing seat for fixing, the bottom of the fractionating tower body is connected with the top of the fixing seat, and a square plate and a long plate are symmetrically arranged on two sides of the fixing seat respectively; a water tank is fixed to the top of the square plate and communicated with the condensation column through a connected water pipe, the top of the long plate is connected with a heating box used for preheating crude oil, and the heating box is located below the condensation column. A condensing pipe for circulating condensed liquid is arranged in the condensing column in a penetrating manner, one end of the condensing pipe is connected with the side wall of the fractionating tower body, and a movably connected cover plate is arranged at the top of the fractionating tower body. According to the petroleum refining device, petroleum refining processing can be accelerated through the arranged condensate water, a petroleum stock solution can be preheated through the temperature carried by the condensate water, energy loss is reduced, and the practicability of the device is improved.

The utility model belongs to refrigeration technical field, specifically disclose a kind of nitrogen circulation refrigeration system for cryogenic separation device, including fractionating column, nitrogen compressor, plate heat exchanger and intake pipe;Raw gas is connected to fractionating column by intake pipe after passing plate heat exchanger, can carry out preliminary cooling to raw gas;The inside top of fractionating column is equipped with tubular heat exchanger, and the top of fractionating column is connected with first gas outlet pipe, and first gas outlet pipe is connected with second gas outlet pipe after passing plate heat exchanger, reheats and exports process gas;Tubular heat exchanger is connected by first pipeline and is connected to nitrogen compressor again by the internal pipeline of plate heat exchanger, and after passing nitrogen compressor, the high-pressure normal-temperature nitrogen gas generated by it is connected back to plate heat exchanger by third pipeline, and after preliminary cooling by plate heat exchanger, it is connected back to tubular heat exchanger by fourth pipeline to provide cold quantity, can realize the rapid cooling of fractionating column overhead, shorten driving cycle.

The invention relates to the technical field of coal chemical industry separation, in particular to a coal liquefaction oil-water separation system and method, and the system comprises an oil phase separation unit, a distillation unit, a cooling condensation unit, an oil-water separation unit and a power unit; the oil phase separation unit is used for separating materials to obtain a water-containing oil phase; the distillation unit is used for carrying out evaporation treatment on a water-containing oil phase; the cooling and condensing unit is used for cooling water vapor when the water-containing oil phase is subjected to evaporation treatment to form an oil-water mixture; and the oil-water separation unit is used for separating an oil phase, phenol-containing sewage and gas-phase light hydrocarbon from the oil-water mixture. The system can wash pulverized coal carried in a gas phase, can also reduce the temperature of the gas phase at the top of the normal-pressure fractionating tower so as to reduce the load of an air cooler, prolong the service life of the air cooler, improve the separation efficiency and separation effect of the normal-pressure fractionating tower, and can also prevent excessive condensation of heavy components, thereby improving the balance of mass transfer and heat transfer in the tower and improving the separation efficiency and separation effect of the normal-pressure fractionating tower. And stable operation of the fractionation process and product quality are improved.

The utility model relates to the technical field of mineral oil processing, and provides a device for precisely fractionating waste mineral oil, which comprises a fractionating tower and a position blocking plate, a plurality of output pipes which are uniformly distributed are arranged on the fractionating tower, a plurality of mark inserting grooves matched with the output pipes are fixedly connected to the outer wall of the fractionating tower, and mark plates are inserted into the mark inserting grooves. The blocking plate is rotationally connected to the top end of the label inserting groove, a positioning groove is formed in the top end of the label inserting groove, a first magnetic attraction piece is arranged on the inner lower side wall of the positioning groove, a containing groove matched with the positioning groove is formed in the bottom end of the blocking plate, a through hole is formed in the inner upper side wall of the containing groove, and a control rod is slidably connected into the through hole. And the bottom end of the control rod is fixedly connected with a positioning rod slidably connected with the containing groove, the bottom end of the positioning rod is provided with a second magnetic attraction piece matched with the first magnetic attraction piece, and the top end of the control rod is provided with a stop block, so that the purposes of conveniently replacing the marking plate and improving the working efficiency are achieved.

The utility model relates to the field of coking equipment, concretely relates to a special circulating oil adjusting device for production of needle coke. The special circulating oil adjusting device includes: a fractionating column, has the bottom, and is provided with circulating oil oil collecting tank for containing circulating oil above the bottom, circulating pipeline, including the out -of -tower pipeline and the tower inlet pipeline that communicate with circulating oil oil collecting tank and circulating oil pump that links to each other with the out -of -tower pipeline and the tower inlet pipeline, tower bottom pipeline, communicates circulating oil pump with the bottom, and is provided with flow control valve on the tower bottom pipeline. The special circulating oil adjusting device for production of needle coke of the utility model adds independent circulating pipeline, can directly inject circulating oil into the fractionating column bottom, thereby more conveniently individually adjusts circulating oil amount.

The utility model discloses a novel nitrogen making device which comprises an air compressor, a pre-cooling unit, a purification system and a fractionating tower which are communicated in sequence, raw material air is compressed by the air compressor, cooled by the precooling unit and then enters the purification system; entering a fractionating tower; in a main heat exchanger of the fractionating tower, air exchanges heat with the refluxed oxygen-enriched gas and nitrogen, the temperature is reduced to be close to an air liquefaction point, the air enters a rectifying tower for rectification, and high-purity nitrogen is obtained at the top of the rectifying tower; one part of the high-purity nitrogen serves as product nitrogen, is reheated by the main heat exchanger, is discharged from the fractionating tower and is sent to a user; one part of the obtained liquid nitrogen is output as a product, and the other part of the obtained liquid nitrogen enters the rectifying tower again to serve as reflux liquid; one part of liquid air is throttled, enters the subcooler, is vaporized and then is converged with the expanded oxygen-enriched gas; the rectified liquid nitrogen enters a main heat exchanger through a liquid nitrogen pump to be reheated and serves as another stream of product nitrogen; the device can be used for producing nitrogen with two different pressures.

The apparatus includes a distillation vessel configured to receive the mixture. The apparatus includes a column fluidly connected to the distillation vessel. A mesh is disposed in the column. The apparatus includes a plurality of conduits fluidly connected to respective vacuums. A fractionation top is fluidly connected to the column. The column is fluidly connected between the distillation vessel and the fractionation top.

This invention discloses a distillation apparatus for processing high-QI needle coke feedstock, relating to the field of high-QI needle coke feedstock processing technology. It includes a heating furnace, a vacuum distillation column, and a fractionation column. The heating furnace is connected to the lower end of the vacuum distillation column. The top of the vacuum distillation column is a waste oil discharge end, the middle section is a mid-section oil collection system, and the lower end is a heavy phase pitch collection end. The waste oil discharge end is connected to a top vacuum pump. The mid-section oil collection system is connected to the lower end of the fractionation column. The fractionation column, from top to bottom, consists of a first fraction collection system, a second fraction collection system, and a third fraction collection system. This invention pre-treats needle coke feedstock by combining vacuum distillation and fractionation, significantly increasing the yield of needle coke feedstock.

This invention discloses a method for detecting the liquid level at the bottom of a fractionation column, belonging to the field of air separation. Addressing the problem that traditional single differential pressure measurements under cryogenic conditions are prone to failure due to ice blockage or vaporization of the pressure tapping pipe and cannot be maintained online, this method constructs a heterogeneous redundant measurement system combining contact differential pressure detection and non-contact external ultrasonic detection. By simultaneously acquiring two raw signals, density dynamic compensation and sound velocity compensation based on a thermodynamic database are performed respectively to calculate high-precision first and second liquid level values. Subsequently, an adaptive Kalman filter algorithm is introduced to dynamically adjust process noise based on feed and discharge flow rates and estimate observation noise in real time based on residuals, optimally fusing the two liquid level values. This invention achieves highly reliable fusion of multi-source data and system logic self-healing, significantly improving the accuracy, stability, and intelligence level of fractionation column bottom liquid level measurement.

The utility model provides a fractionating tower top diversion anti-corrosion device which is arranged at the top end of a fractionating tower body and comprises a diversion body and a connector, a liquid collecting tank and a supporting net are arranged in the diversion body, the supporting net is arranged above the liquid collecting tank, the supporting net is composed of a plurality of net layers, ceramic fibers are arranged between the net layers of the supporting net, and the connector is connected with the diversion body. A through hole communicated with the outside is formed in the bottom of the liquid collecting groove and connected with a liquid guide pipe, a drain valve is arranged in the liquid guide pipe, and a plurality of ammonia water injection openings are formed in the portion, above the supporting net, of the flow guide body. Therefore, the device has the advantages of collecting liquid acid condensed at the top of the tower due to low temperature, timely leading out the liquid acid at the top of the tower, preventing the inner wall of the fractionating tower from being corroded, and providing guarantee for the stability of a system in the fractionating tower.

Processes for producing two CO2 streams having different purities, including one stream comprising ultra high purity CO2. The processes incorporate a second fractionation column in a CO2 fractionation process. The bottoms stream from the first cryogenic fractionation column is sent to the second CO2 fractionation column. The second CO2 fractionation column can produce ultra high purity CO2. The bottoms stream from the first column can be divided and a portion of the bottoms stream can be recovered as a second CO2 product stream having a lower purity than the purity of the product stream.

The utility model relates to the technical field of chemical engineering, in particular to a fluidized bed residual oil hydrocracking device fractionating tower coking treatment system which comprises a fractionating tower, an atmospheric tower hot feeding line, a fractionating tower outlet line, an atmospheric wax oil circulation line, a circulation branch line, a diesel oil extraction line and an inlet steam line which are connected to the atmospheric wax oil circulation line, a normal-pressure wax oil collecting tank is arranged in the fractionating tower; a hot feeding line of the atmospheric tower is connected to an inlet of the fractionating tower; one end of the fractionating tower outlet line is connected with an outlet of the fractionating tower, the other end of the fractionating tower outlet line is connected with an inlet of the normal-pressure wax oil stripping tower, a tower inlet valve is arranged on the fractionating tower outlet line, a first bypass pipeline is arranged on the tower inlet valve, and a valve group is arranged on the first bypass pipeline. A normal-pressure wax oil collecting tank of a fractionating tower is forwards or reversely cleaned by introducing a diesel oil extraction line, and the normal-pressure wax oil collecting tank of the fractionating tower can be reversely cleaned by introducing an inlet steam line, so that the problem of coking and blockage of the normal-pressure wax oil collecting tank is solved.

The present disclosure relates to a method and system for cracking wide-cut feedstock containing heavy components to produce olefins. The wide-cut feedstock is mixed with a first portion of steam, then mixed with a second portion of steam, and then introduced into a fractionating column for separation. The light fraction and the middle fraction obtained by fractionation are heated in a convection section and then introduced into different furnace tubes of a radiant section of a steam cracking device for cracking. Alternatively, part of the fraction is sent to a refinery for secondary processing to produce other products. This method can efficiently crack different fractions of light crude oil or condensate oil, has high olefin yield, saves energy, and can maximize the use of existing steam cracking technology, which is mature and easy to operate. The method eliminates the need for atmospheric and vacuum distillation devices, thereby saving investment. The method has a wide range of crude oil adaptability and improves the comprehensive utilization rate of different fractions of wide-cut feedstock.

The utility model belongs to the field of chemical technology, especially relate to a water injection device of light and medium component hydrocracking device. The communication subassembly is used for communicating the fractionating tower. The water injection subassembly includes the purification mechanism and the water injection jar, and the purification mechanism sets up on the water injection jar, and the purification mechanism is used for communicating with the communication subassembly. The purification mechanism includes the purification cylinder, drive structure and activated carbon structure. The installation mouth is set up in the front side of purification cylinder, and the water inlet hole that communicates with the communication subassembly is set up in the back side of purification cylinder, and the lower end of purification cylinder is connected with the upper end of water injection jar and communicates. Drive structure sets up on the purification cylinder. The activated carbon structure is provided with two, and one activated carbon structure is located below the water inlet hole, and the other activated carbon structure corresponds the installation mouth. Through setting up the communication subassembly and the water injection subassembly, can take acidic water as light and medium component hydrocracking device water injection, namely, reduces the energy consumption needed for acidic water stripping, and can reduce the oxygen removal water usage, is favorable for reducing the use cost.

The utility model relates to the technical field of fractionating towers, and discloses a fractionating tower for synthesizing and purifying phenyl alkyl sulfonate, which comprises a fractionating tower body, the top of the fractionating tower body is fixedly connected with an exhaust pipe, the outer wall of the fractionating tower body is fixedly connected with a discharge pipe, and the bottom of the fractionating tower body is provided with a motor. The fractionating tower body is internally provided with a cleaning assembly, the cleaning assembly is used for cleaning oxide scales adhered to the inner wall of the fractionating tower body, one side of the outer wall of the fractionating tower body is provided with a filtering assembly, and the filtering assembly is used for filtering impurities in alkyl phenyl sulfonate raw materials. According to the utility model, the scraper moves through the operation of the motor, so that oxides adhered to the inner wall of the fractionating tower body are scraped, the normal operation of the fractionating tower is prevented from being influenced and the service life of the fractionating tower is shortened due to scaling formed by excessive accumulation of the oxides, and meanwhile, materials can be stirred, the materials are promoted to be uniformly mixed, and the heat transfer efficiency is improved.

The invention relates to the technical field of aromatic hydrocarbon isomerization, and discloses a xylene aromatic hydrocarbon full liquid phase isomerization method and system, and the method comprises the following steps: (1) carrying out ethylbenzene adsorption separation on an ethylbenzene-containing C8 aromatic hydrocarbon raw material to obtain ethylbenzene and EB-poor xylene aromatic hydrocarbon; (2) carrying out p-xylene adsorption separation on the EB-poor xylene aromatic hydrocarbon to obtain p-xylene and PX-poor xylene aromatic hydrocarbon; (3) carrying out full liquid phase isomerization reaction on the PX-poor xylene aromatic hydrocarbon to obtain a reaction product; (4) conveying a reaction product to a fractionating tower for separation, condensing light components at the top of the tower into a liquid phase through a heat exchanger, reconveying the liquid phase to the top of the tower after decompressing and discharging hydrogen in a reflux tank, and discharging heavy components containing C9 < + > aromatic hydrocarbon from the bottom of the tower; and (5) extracting a hydrogen-poor material from the side line of the fractionating tower, and carrying out p-xylene adsorption separation. EB is separated from the source, the advantages of liquid phase isomerization are fully played, and the purpose of reducing the overall material consumption and energy consumption of the aromatic hydrocarbon process is finally achieved.