129 results about "Fractionating column" patented technology

Processes and systems for making recycle content hydrocarbons, including olefins, from recycled waste material. Recycle waste material may be pyrolyzed to form recycle content pyrolysis oil composition (r-pyoil), at least a portion of which may then be cracked to form a recycle content olefin composition (r-olefin). The r-olefin may then be further separated into product streams in a separation zone downstream of the cracker furnace. The presence of recycle content hydrocarbons may facilitate more efficient operation of one or more distillation columns in the separation zone, including the propylene fractionator.

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 utility model relates to the technical field of fractionating tower tray structures, and discloses a fractionating tower tray structure which comprises a fractionating tower main body, a feeding hole A is formed in the fractionating tower main body, a feeding hole B is formed in the fractionating tower main body, a tower tray is fixedly mounted in the fractionating tower main body, and a discharging hole C is formed in the fractionating tower main body. A condenser pipe is fixedly mounted at the top of the tower tray, a cleaning mechanism is arranged in the fractionating tower main body, a sealing mechanism is arranged in the fractionating tower main body, a cleaning column is upwards jacked to eject residual fluid in leaking holes of the tower tray to the top of the tower tray, and meanwhile, an absorption block is in contact with the top of the tower tray to absorb and clean the ejected residual fluid. And an insertion block is inserted into a threaded sleeve B under the action of a spring, so that a guide plate B and the threaded sleeve B are mounted, an absorption block is more convenient to replace, two sealing rings can be mounted through bolts, the interior of the fractionating tower main body is sealed, and the fractionating tower main body can be used.

The invention relates to the technical field of fractionating tower equipment, and discloses a low-pressure-drop fractionating tower which comprises a fractionating tower, the bottom of the fractionating tower is fixedly connected with a supporting plate, the top of the fractionating tower is communicated with an exhaust funnel, one side of the outer wall of the fractionating tower is communicated with a feeding pipe, and the outer wall of the top end of the fractionating tower is fixedly connected with a fixing plate. A gas pump is fixedly connected to the bottom of the fixing plate, a mixture and high-pressure gas are injected into the fractionating tower through a feeding pipe, a heater is started, the heater is heated, generated heat is subjected to heat transfer on a heating shell, heat energy of the heating shell heats the falling mixture, and gas-liquid separation is conducted on the falling mixture; the generated air pressure enables the sliding cylinder to vertically move upwards along the inner wall of the fixed shell, at the moment, high-pressure air flow enters the fixed shell, the air flow enters the sliding cylinder through the air holes through the arrangement of the air holes, and then the air flow is in contact with liquid at the top of the fixed shell through the air holes, so that the working efficiency of fractionation is improved.

The invention discloses a multi-section energy-saving fractionating tower and a use method, and belongs to the technical field of fractionating towers, the multi-section energy-saving fractionating tower comprises a tower body, a gas distributor mounted at the bottom end in the tower body, and a gas outlet mounted at the middle position of the top end of the tower body. Small-porosity structured packing and large-porosity bulk packing are arranged at the top of the lower partition plate, high-flow-rate deposition of fine particles on the tower top is reduced under the condition that gas and liquid are evenly distributed, meanwhile, a screen plate is arranged in the middle of the bulk packing, and shifting rods are evenly and vertically fixed to the upper surface and the lower surface of the screen plate, so that the high-flow-rate deposition of the fine particles on the tower top is reduced. The driving mechanism is controlled to provide power for the rotating mechanism by utilizing the pressure difference change of the upper end and the lower end in the [-shaped gas guide pipe, so that the rotation of the net plate is controlled, the position change of the filler can be controlled and the permeation effect is improved under the condition that the filler is blocked, and the device can effectively improve the permeation effect through the synergistic effect of the filler porosity gradient design and mechanical self-cleaning. And the limitation of the traditional static anti-blocking technology is broken through.

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).

The present invention belongs to the technical field of chemical production, and particularly relates to an ODS recovery device and method, wherein the equipment comprises: a bracket, which is used for overall fixing of the device; a mixing cylinder, which is arranged at the upper end of the bracket and is used for mixing ODS and a fractionation reagent; a stirring component, which is used for stirring during extraction; a flow interception component, which is used for dripping ODS; a spray mechanism, which is arranged in the middle of the mixing cylinder and consists of an intermittent component, an intermittent mechanism, and a connecting component, and is used for atomizing, spraying and mixing the extraction reagent; a fractionation tower, which is used for azeotropic distillation of the mixed ODS; through the intermittent component, when the mixed spraying of the ODS solvent is carried out, the chamber is sealed by the slide rod and the partition plate, and the spring sleeved in the slide rod is used, and the intermittent opening and closing of the intermittent component is completed by combining the arc block and the arc surface between the arc blocks for inclined transmission; the stirring component is then used to realize stirring through belt transmission, and when the belt transmission is overloaded, the belt slips to protect the transmission end.

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.

The invention relates to the technical field of chemical engineering, and discloses an amidation reaction product fractionation device and an imidazoline intermediate production system.The amidation reaction product fractionation device comprises a fractionation column with a fractionation cavity, and the upper end and the lower end of the fractionation column are provided with a first passing opening and a second passing opening which are communicated with the cavity respectively; the suction pipeline sequentially penetrates through the two passing openings from top to bottom and is fixed on the fractionating column; the device is provided with a first valve and a second valve, the first valve is located on the side, close to the first passing opening, in the fractionation cavity and is provided with a first opening, a second opening, a third opening and three states, and multiple communication modes of the suction pipeline and the cavity are achieved; the second valve is located on the side, close to the second passing opening, of the cavity and provided with a fourth opening, a fifth opening, a sixth opening and two states, and multiple communication modes are achieved. In addition, the first energy output end of the temperature adjusting device is connected with the fractionation cavity and used for controlling the temperature. The amidation reaction product fractionation device and the imidazoline intermediate production system provided by the invention are simple in structure and flexible in regulation and control, and can effectively realize efficient fractionation of the amidation reaction product.

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.

Processes and apparatuses for separating chlorides from a butane product stream by removing chlorides from a portion of said feed stream in a rectification section of the separation zone. The rectification section may be in a rectification column which may be combined with a stripper column. Alternatively, a wall may be used to provide the rectification section in a fractionation column. The processes and apparatuses can be used in both new designs and revamped designs.

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.