30results about How to "Eliminate backmixing" patented technology

The invention discloses a crude oil electric desalination dehydrator used in the petrochemical industry, in order to solve the problems existing in the existing electric desalination dehydrator that adopt a weak electric field to feed materials, which weakens the electric coalescence in the strong electric field area and the crude oil moves from bottom to top Its main feature is that it can use strong electric field to directly feed and crude oil to flow horizontally during operation. In the electric desalination dehydrator of the present invention, a strong electric field coalescence zone (5) is provided along the axial direction of the tank body from the oil-water mixture inlet end of the tank body (1), and an oil outlet pipe (5) is provided on the top of the tank body purified crude oil outlet end ( 10), the strong electric field coalescence area is provided with at least two layers of planar electrode plates (6) perpendicular to the axis of the tank body, and the electrode plates of each layer are parallel to each other. A feed distributor (4) is arranged in the tank, and a spout is arranged on it, and the oil-water mixture is sprayed into the strong electric field between all adjacent two-layer electrode plates. A settling separation zone (7) can also be set between the strong electric field coalescence zone and the outlet end of the purified crude oil in the tank.

The invention discloses a crude oil electric desalination dehydrator used in the petrochemical industry, in order to solve the problems existing in the existing electric desalination dehydrator that adopt a weak electric field to feed materials, which weakens the electric coalescence in the strong electric field area and the crude oil moves from bottom to top Its main feature is that it can use strong electric field to directly feed and crude oil to flow horizontally during operation. In the electric desalination dehydrator of the present invention, a feed distributor (4) and a strong electric field coalescence area (5) are sequentially arranged along the axial direction of the tank body from the oil-water mixture inlet end of the tank body (1), and the tank body is purified An oil outlet pipe (10) is provided on the top of the crude oil outlet, and at least two layers of planar electrode plates (6) parallel to the axial direction of the tank are provided in the strong electric field coalescence area, and the electrode plates of each layer are parallel to each other. The feed distributor is provided with a spout, which sprays the oil-water mixture into the strong electric field between all adjacent two-layer electrode plates. A settling separation zone (7) can also be set between the strong electric field coalescence zone and the outlet end of the purified crude oil in the tank.

This invention relates to a fluid-state instantaneous calcining technique for calcining kaolin. The technique comprises a flue gas generating system, a loading system, a fluid-state calcining system, a gas-solid separating system and a post-calcining system. The material is loaded into the fluid-state calcining system by the loading system, where it is mixed with high-temperate flue gas flow generated by the flue gas generating system for instantaneous calcining. The calcined material is introduced into the gas-solid separating system, and the collected solid is then introduced to the post-calcining system for whitening treatment. The instantaneous calcining time is adjusted by the valve. The method can realize large-scale and continuous industrial manufacture, and can effectively reduce the time and energy consumption of post-calcining whitening treatment. The calcined kaolin product has improved oil-absorbency, hiding contrast rate and light extinction performance.

The invention relates to a benzene-toluene-xylene-heavy aromatics separating method. The method is characterized in that multiple components of benzene, toluene, xylene, C9 and heavy aromatics are introduced into a first rectifying tower, the rectifying tower kettle is heated, and a first product benzene is extracted from the top of the tower. Two gas phase material flows extracted from different positions at intermediate section of the first rectifying tower are respectively introduced into the bottom of a second rectifying tower and a third rectifying tower which have no arrangement of a reboiler, a second product toluene and a third product xylene are respectively extracted from the top of the tower, the liquid phase material flow at the bottom of the second rectifying tower and the third rectifying tower enables backflow into the first rectifying tower, and a fourth product heavy aromatics extracted from the bottom of the first rectifying tower. Compared with a traditional sequence separating technology, The method has the advantages of low investment and low energy consumption, and can be used for industrial separation of benzene-toluene-xylene-heavy aromatics.

The invention discloses a method for separating zirconium from hafnium by using an elution extraction method, belonging to the technical field of zirconium and hafnium separation. The method comprises the following steps of: preparing liquid MIBK (Methyl Iso Butyl Ketone) into MIBK elution extraction resin; extracting hafnium with an extraction agent of MIBK; reserving hafnium in a material liquid water phase and precipitating water ammonia water; eluting the elution extraction resin with hydrochloric acid and desorbing the elution extraction resin with sulfuric acid solution to obtain a solution containing hafnium; precipitating with ammonia water; and respectively washing and roasting the precipitation to obtain zirconium oxide and hafnium oxide in atomic energy level. The process method has the advantages of less mass transfer, high extraction capacity, large zirconium and hafnium separation coefficient, simple process flow and less investment and is easy for operation; two qualified products can be obtained by one-time extraction; the equipment has high yield and the consumption of chemical materials is low. According to the invention, the concentration of the used thiocyanic acid is lower than that used by a liquid-liquid solvent extraction method; the equipment is easy to close; and the pollution of H2S, HCN and methyl mercaptan generated by decomposing the volatilized MIMK and HSCN to the environment can be greatly reduced.

The invention discloses a tubular continuous method for preparing cyclopropanecarboxylic acid. In the method, gamma-butyrolactone used as a raw material reacts with thionyl chloride and alcohol to produce 4-chlorobutyrate; after the reaction liquid is processed in an acid gas removing way and an alcohol recycling way, the reaction liquid and liquid sodium alkoxide are synthesized to obtain cyclopropanecarboxylate in a tubular reactor; the rectified cyclopropanecarboxylate is firstly hydrolyzed in alkali liquor and then neutralized with acid to obtain crude cyclopropanecarboxylic acid; and thecrude cyclopropanecarboxylic acid is rectified to obtain the pure cyclopropanecarboxylic acid. The synthetic technique of the cyclopropanecarboxylic acid adopts the tubular continuous reactor, thereby effectively reducing the equipment investment and enhancing the investment efficiency; the continuous reaction can conveniently realize automatic control, thereby ensuring the continuity and the stability of the production, saving the manual cost, realizing the safe production operation and enhancing the purity and the yield of the product; and the invention adopts a technique of adding solid caustic soda again in the second aqueous phase for recycling, thereby fully and comprehensively utilizing the resources, enhancing the yield for hydrolysis and greatly reducing the cost.

A fixed float valve plate, comprising orifice valve and valve block, the valve block is a quadrangle similar to diamond with macro-diagonal line as bilateral symmetry, the separation angle of the long line points to the overflow dam, the length of the valve block long line a is 10-80 mm, the width of the valve block b is 8-60 mm, the width of the valve leg c is 4-20 mm, the length of the valve block d is 15-90 mm, the height of the valve leg h is 3-8 mm, the length of the valve pore I is 15-100 mm, the valve leg connects the valve block with the valve plate. The fixed float valve plate in this invention can push the liquid to the overflow dam to decrease the liquid level drop height, and eliminate the convolution and back-mix-flow effectively, thus increase the valve plate efficiency. The side edge of broken line similar to diamond is longer than that of rectangular straight line and circular arcuate path, which makes the outlet of air passage be larger, and increase the pass amount effectively and the contacting area of the gas-liquid mass transfer, which can not only increase the transferring efficiency but the pore speed of the gas decreases under the same treating amount, thus decreasing the valve plate resistance force.

The invention discloses the method and the equipment which under a kind of petroleum refinement process a line of tubular catalysis cracks, mainly uses in to solve the existing on line of -like lifting tube reactor multi- existences catalyst and the oil gas returns mixes seriously, after the next line of tubular reactor technology exists reactor demi-section question and so on catalytic reaction degree drop. The invention uses two section of -like under line of tubular reactor, comes from the first regenerator (5) under the temperature higher half regeneration catalyst and the raw oil (201) enter a line of tubular reactor (3) the crown, (301) under marches forward the line of catalysis cracking reaction along the first response section; After next line of tubular reactor (3) the middle catalyst entrance (304) introduces from the second regenerator (6) the temperature lower regeneration catalyst, with comes from the first response section (301) the under good catalyst and the oil gas mix, enters the secondary reaction section (302) under the continuation to march forward the line of catalysis cracking reaction. The invention mainly uses in the petroleum Heavy tar fraction catalyzed cracking processing.

A system for monitoring municipal saprobia inhibitive ability in real time based on oxygen uptake rate (OUR) comprises an aeration siphon device communicated with a sewage supplying system and a sludge supplying system. The aeration siphon device is composed of an aeration groove and a siphon groove in adjoining mode, the wall of the aeration groove is higher than that of the siphon groove, the aeration groove is communicated with the sewage supplying system and the sludge supplying system, and the siphon groove is communicated with an inlet of a closed coiler flow-pushing type bioreactor through a siphon tube. A dissolved oxygen (DO) detection system detects DO values of the inlet and an outlet of the closed coiler flow-pushing type bioreactor, and the signal output end of the DO detection system is connected onto a programmable logic controller (PLC) control system which is connected with an alarm system. The core part of system for monitoring municipal saprobia inhibitive ability in real time adopts the closed coiler flow-pushing type bioreactor so as to monitor the DO value of the inlet and the DO of the outlet in real time, automatically calculate mutation condition of activated sludge OUR, determines OUR mutation rate with different inhibition degree through plenty of experiments, and judge inhibitable degree of the saprobia by comparing automatically calculated OUR mutation rate with a preset value.

The invention discloses a method and a device for separating surfactant from dilute solution. A raw material tank filled with dilute solution containing surfactant is connected from the bottom of a vertically arranged tubular membrane module via a solution pump, a first valve and a liquid flowmeter; a compressor is also connected from the bottom of the vertically arranged tubular membrane module via a second valve and a gas flowmeter; the top part of the vertically arranged tubular membrane module is connected to a foam collecting groove via a third valve; the middle part of the vertically arranged tubular membrane module is connected with a liquid storage tank. The adoption of the membrane and foam separation inner coupling method can reduce the concentration polarization of the membranesurface effectively, reduce membrane pollution, prolong the service life of the membrane, and simultaneously can eliminate back mixing phenomenon in the membrane and foam separation process, improve mass transfer rate of membrane and foam separation, and achieve separation efficiency. The rejection of the surfactant is 64.9% to 99.9%, thus saving more energy.

The present invention relates to a guide float valve plate which comprises a guide float valve which is a symmetrical quadrangular guide float valve, its valve cover is a quadrangular from with symmetrical diagonal liens, the included angle of long edges is directed against overflow weir, under the valve cover more than three valve legs are mouthed, front valve leg length is longer than rear valve leg length, so that when the float value is completely opened, between valve cover and valve hole plate an included angle toward overflow weir is opened, said included angle is 2-10 deg, and on the valve cover can be mounted the guide hole and guide plate. Said invention can effectively reduce liquid level gradient on the plate, raise plate flux, raise mass transfer efficiency and reduce resistance of plate.

The invention discloses gas-solid contact equipment for a fluidized bed, which is used for catalytic conversion devices in petroleum refining, petrochemical industry and other industries so as to solve the problems of non-flowing region, local slugging of gas or local solid bridging and the like which are easy to generate respectively when the conventional contact equipment is provided with a corresponding tray-type inner component or a filler, and the problems that the inner component or filler is difficult to install, overhaul and maintain. The contact equipment is at least provided with two groups of fillers (1) along the axial direction of a cylinder body (4), and a space is reserved between the two groups of fillers; each group of filler consists of a plurality of filler layers whichare overlapped along the vertical direction, each filler layer is provided with a vertical hexagonal channel formed by strip plates, and the cross section shape of the hexagonal channel is a regular hexagon shape; and in each group of filler, the hexagonal channels on two adjacent filler layers are alternately arranged. The equipment can be used as a stripper to strip oil gas, hydrocarbon or gas impurities carried in the catalyst, and also can be used as a regenerator to regenerate the catalyst.

The invention provides a horizontal reactor. The horizontal reactor comprises a housing having a containing space, a feed inlet, a discharge port and multiple separator plates. The feed inlet and the discharge port are respectively arranged at two ends of the housing. The multiple separator plates are successively arranged at intervals along the direction vertical to flow direction of a material flowing from the feed inlet to the discharge hole. The multiple separator plates divide the containing space into multiple reaction chambers. The separator plates match the cross section of the housing in shape and size. Each of the separator plates is provided with several division holes which are distributed along the depth direction of the material in the reaction chambers. The horizontal reactor provided by the invention has high production capacity and can completely eradicate backmixing phenomenon of reactants.