CN104046512B - A kind of vegetable oil deodorized system - Google Patents

A kind of vegetable oil deodorized system Download PDF

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Publication number
CN104046512B
CN104046512B CN201410308242.7A CN201410308242A CN104046512B CN 104046512 B CN104046512 B CN 104046512B CN 201410308242 A CN201410308242 A CN 201410308242A CN 104046512 B CN104046512 B CN 104046512B
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oil
tower
trapping solution
lipid acid
vacuum
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CN104046512A (en
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周二晓
吕艳飞
段秀峰
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Myande Group Co Ltd
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Myande Group Co Ltd
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/10—Process efficiency

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  • Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)

Abstract

The present invention relates to a kind of vegetable oil deodorized system, deodorizing tower top is packing section, and bottom is plate tower section; Upper housing top is connected with packing section vacuum-pumping tube, the deodorizing tower lower housing on plate tower section top is connected with plate tower section vacuum-pumping tube and is connected with total vacuum-pumping tube respectively.The oil distributing plate base plate of vacuum oil interchanger is distributed with multiple cloth oilhole, and the projection of each cloth oilhole is evenly distributed on the periphery of corresponding heat exchanger tube upper orifice; The upper orifice of each heat exchanger tube is circumferentially evenly distributed with multiple serrated slot.The two sections that deodorized distillate trapping tower is divided into gas phase to communicate, bottom is provided with dimension E and traps packing layer, and top is provided with top and is provided with lipid acid trapping packing layer, the E of trapping dimension respectively and lipid acid.Dry type is freezed condenser and is adopted a multiple condensing chamber parallel connection to connect with time condensation room again, and along airintake direction, the arrangement pitches of refrigeration agent tubulation diminishes gradually.This system deodorising effect is good, energy-conservation and environmental protection.

Description

A kind of vegetable oil deodorized system
Technical field
The present invention relates to a kind of vegetable oil deodorized system, for depickling in vegetable oil refining, deodorization operation, belong to vegetable oil refining suite of equipment technical field.
Background technology
In vegetable oil refining process, need to become deodorization processed oil through deodorization procedures, deodorization procedures completes usually in deodorizing tower, removes for being carried out volatilizing or evaporating by the stink substance in vegetables oil, and the cut be drawn out of from deodorizing tower enters deodorized distillate trapping tower and carries out trapping recovery.Deodorizing tower comprises interconnective deodorizing tower upper housing and deodorizing tower lower housing, the top of deodorizing tower upper housing is connected with packing section oil inlet pipe, the center of oil dispenser is aimed in the outlet of packing section oil inlet pipe downwards, the below of oil dispenser is until the underfill of deodorizing tower upper housing has deodorizing tower filler, and the bottom of deodorizing tower lower housing is provided with plate tower section oil outlet pipe.
High temperature treat that deodorised oil enters the top of deodorizing tower upper housing from packing section oil inlet pipe, from top to bottom flowing until from bottom deodorizing tower lower housing plate tower section oil outlet pipe flow out.According to Dalton's law (of partial pressures), in deodorising process, the absolute pressure in deodorizing tower is lower, and be more beneficial to the volatilization of stink substance in vegetables oil and remove, therefore the top of deodorizing tower upper housing is connected with vacuum-pumping tube, keeps the inner chamber of deodorizing tower to be in vacuum state.Because the aspect ratio of deodorizing tower is higher, top distance vacuum orifice is closer, and the effectiveness comparison vacuumized is good; Due to the existence of pumping resistance, away from the deodorizing tower bottom of vacuum orifice, the effectiveness comparison vacuumized is poor, high temperature oil under low vacuum environment in oil the removing and easily cause oily small molecular composition polymerization reaction take place of low component stink substance, affect oil quality.
Summary of the invention
The object of the invention is to, overcome problems of the prior art, provide a kind of vegetable oil deodorized system, deodorising effect is good.
For solving above technical problem, the vegetable oil deodorized system of one of the present invention, comprise deodorizing tower, deodorized distillate trapping tower and pumped vacuum systems, described deodorizing tower comprises interconnective deodorizing tower upper housing and deodorizing tower lower housing, the top of described deodorizing tower upper housing is connected with packing section oil inlet pipe, the center of oil dispenser is aimed in the outlet of described packing section oil inlet pipe downwards, and the below of described oil dispenser is until the underfill of described deodorizing tower upper housing has deodorizing tower filler; The bottom of described deodorizing tower lower housing is provided with plate tower section oil outlet pipe, and the top of described deodorizing tower lower housing is provided with and housing cavity is divided into upper and lower two-part isolation tower tray, and described deodorizing tower upper housing and described isolation tower tray are formed packing section jointly with upper part; The part that described deodorizing tower lower housing is positioned at below isolation tower tray forms plate tower section; The bottom of described packing section is connected with packing section oil outlet pipe; The upper body of described plate tower section is connected with plate tower section oil inlet pipe, the top of described deodorizing tower upper housing is connected with packing section vacuum-pumping tube, the deodorizing tower lower housing on described plate tower section top is connected with plate tower section vacuum-pumping tube, the other end of described packing section vacuum-pumping tube and the other end of described plate tower section vacuum-pumping tube are connected to the two ends of the total vacuum-pumping tube of deodorizing tower, the deodorized distillate entrance that middle part and the described deodorized distillate of the total vacuum-pumping tube of described deodorizing tower trap tower is connected, and the trapping tower vacuum orifice of described deodorized distillate trapping tower is connected with described pumped vacuum systems.
Relative to prior art, the present invention achieves following beneficial effect: the total vacuum-pumping tube of deodorizing tower is connected respectively by the top of packing section vacuum-pumping tube and plate tower section vacuum-pumping tube and deodorizing tower upper housing and plate tower section top, packing section vacuum-pumping tube is responsible for the vacuum tightness maintaining packing section, plate tower section vacuum-pumping tube is responsible for the vacuum tightness of retaining plate tower section, respective bleeding highly is roughly equivalent to the half of whole deodorizing tower height, makes plate tower section have the condition of high vacuum degree identical with packing section.In deodorizing tower upper housing, treat that deodorised oil is evenly spilled in deodorizing tower filler through oil dispenser, under gravity, treat that deodorised oil is that film like flows downward; The low component stink substance such as the water vapor upwards flowed from below and the lipid acid that distills out enters through deodorizing tower filler, with flow downward treat deodorised oil counter current contact, deodorizing tower filler provides the sufficient mass transfer surfaces needed for vapour-liquid contact to amass, in oil, most volatile matter removes rapidly in the process, and water vapor and the malodorous elements distilled out are extracted out outside tower through packing section vacuum-pumping tube.In deodorizing tower lower housing, upper and lower two-part gas-phase space cuts off by isolation tower tray, each self-evacuating vacuum, and vegetables oil can isolate tower tray with lower part with upper part by flowing to communicating pipe from isolation tower tray.
As improvement of the present invention, also comprise vacuum oil interchanger and vacuum heater, the lower housing portion of described vacuum oil interchanger is provided with treats deodorised oil inlet pipe, the housing upper of described vacuum oil interchanger is provided with treats deodorised oil outlet pipe, the upper tubesheet top of described vacuum oil interchanger is connected with tank on deodorization processed oil, on described deodorization processed oil, the middle part of tank is connected with deodorization processed oil inlet pipe, described deodorization processed oil inlet pipe is lower than described packing section oil outlet pipe, the lower tubesheet bottom of described vacuum oil interchanger is connected with tank under deodorization processed oil, under described deodorization processed oil, the bottom of tank is connected with deodorization export of finished oil pipe, the outlet pipe of described vacuum heater is connected with described plate tower section oil inlet pipe by valve one, and is connected with described packing section oil inlet pipe by valve two, the outlet of described plate tower section oil outlet pipe is connected with the entrance of deodorised oil transferpump, described deodorised oil conveying pump outlet is connected with described packing section oil inlet pipe by valve three, and be connected with the deodorization processed oil inlet pipe of described vacuum oil interchanger by valve five, described vacuum oil interchanger treat that deodorised oil outlet pipe is connected with the inlet tube of described vacuum heater, described packing section oil outlet pipe is connected with the deodorization processed oil inlet pipe of described vacuum oil interchanger by valve four.Treated deodorised oil before entering deodorizing tower through vacuum heater heat temperature raising, be convenient to the stink substances such as the lipid acid in vegetables oil and overflow in deodorizing tower; Deodorization processed oil need cool the quality of guarantee oil under vacuo, for making full use of the heat energy in deodorization processed oil, by the deodorization processed oil of high temperature in vacuum oil interchanger with low temperature treat that deodorised oil carries out indirect heat exchange, make deodorization processed oil obtain cooling down on the one hand, make after deodorised oil temperature is improved, enter vacuum heater on the other hand and continue heat temperature raising.Adopt same set of device, by means of only the switching of valve, deodorizing tower just can realize two kinds of flow processs, flow process one: valve-off one, valve three and valve four, open valve two and valve five, vegetables oil can be realized first flow through packing section under gravity and flow through plate tower section again, then be sent into the deodorization processed oil inlet pipe of vacuum oil interchanger by deodorised oil transferpump; In packing section, by the reverse convection of vapour stream and oil film, the volatile matter such as most of lipid acid can be removed; Enter plate tower section again, be downward through each oil storage disc successively, fully contact, and stay for some time in oil storage disc with the water vapor sprayed into bottom oil storage disc, in oil, the superoxide of residual pigment, non-volatility is cleaved removes.Flow process two: valve-off two and valve five, open valve one, valve three and valve four, vegetables oil can be realized and first flow through plate tower section, then send into packing section oil inlet pipe by deodorised oil transferpump, flow through packing section again, then gravity flow enters the deodorization processed oil inlet pipe of vacuum oil interchanger; For the vegetables oil that some oil product is slightly poor, after entering deodorizing tower, carbonization coking can be produced under high temperature action, if advanced packing section, filler fouling will be caused, filler can be caused time serious to block, affect deodorising effect.Now select advanced plate tower section, utilize vegetables oil to have certain residence time in each oil storage disc, the impurity precipitate in oil is deposited on tower tray, and then enters packing section, even thus avoid filling surface fouling to block, extend duration of service of packing section.For the vegetables oil of some facile hydrolysis, if select flow process one, because the time stopped in the oil storage disc of plate tower section before going out deodorizing tower is long, vegetables oil is polymerization reaction take place under high temperature action easily, produce small molecules as the malodorous elements such as aldehyde, ketone, if the open steam simultaneously in tower tray is moisture, more easily causes vegetables oil generation hydrolysis reaction, affect deodorising effect; Now can select flow process two, the laggard packing section of advanced plate tower section, because the time stopped in packing section is shorter, before going out deodorizing tower, the molecular weight polymers that plate tower section vegetables oil high temperature produces and hydrolysate can be volatilized removal fast in packing section, thus ensure the quality of final deodorization processed oil.
As a further improvement on the present invention, described vacuum oil interchanger, comprise heat exchanger shell, the upper port of described heat exchanger shell is closed with interchanger upper tubesheet, the lower port of described heat exchanger shell is closed with interchanger lower tubesheet, the inner chamber of described heat exchanger shell is distributed with many heat exchanger tubes, the axis being parallel of each described heat exchanger tube in the axis of described heat exchanger shell and the two ends up and down of heat exchanger tube stretch out from the pore of interchanger upper tubesheet and interchanger lower tubesheet respectively, it is characterized in that: the top of described interchanger upper tubesheet is connected with tank on deodorization processed oil, the below of described interchanger lower tubesheet is connected with tank under deodorization processed oil, the bottom of described heat exchanger shell connects and needs deodorised oil inlet pipe, the top of described heat exchanger shell connects and needs deodorised oil outlet pipe, on described deodorization processed oil, the top of tank is connected with interchanger vacuum-pumping tube, on described deodorization processed oil, the middle part of tank is provided with deodorization processed oil inlet pipe, under described deodorization processed oil, the bottom of tank is connected with deodorization export of finished oil pipe, described deodorization processed oil is provided with the oil distributing plate of opening upwards in tank, the center of oil distributing plate is aimed in the outlet of described deodorization processed oil inlet pipe, the base plate of described oil distributing plate is parallel to described interchanger upper tubesheet, the base plate of described oil distributing plate is distributed with multiple cloth oilhole, the projection of each described cloth oilhole is evenly distributed on the periphery of corresponding heat exchanger tube upper orifice, the upper orifice of each described heat exchanger tube is connected to the distribution tube head higher than described interchanger upper tubesheet, each described distribution tube head be circumferentially evenly distributed with multiple serrated slot, the shape size height of each described serrated slot is identical.(1) deodorization processed oil and deep fat enter tank deodorization processed oil from deodorization processed oil inlet pipe, and the tube wall along each heat exchanger tube is membranaceous flowing downward, then enter tank under deodorization processed oil, then discharge from deodorization export of finished oil pipe; Treat that deodorised oil is from treating that deodorised oil inlet pipe is introduced into the bottom of heat exchanger shell, upwards flow along heat exchanger shell, temperature raises gradually, treats that deodorised oil outlet pipe flows out finally from top; Low in and high out can ensure to treat that deodorised oil is full of each space of heat exchanger shell, makes each heat exchanger tube uniform heat exchange.(2) deodorization processed oil is membranaceous flowing downward, and thickness is thin, good effect of heat exchange, and speed of cooling is fast.(3) interchanger adopts cold and hot medium counter flow heat exchange, and heat transfer effect is high; Temperature minimum until deodorised oil to enter from the bottom of heat exchanger shell with lower the temperature after the heat exchange of deodorization processed oil, there is the larger temperature difference, good effect of heat exchange between the two; Along with treating that its temperature of upwards flowing of deodorised oil raises gradually, when flowing to the top of heat exchanger shell until deodorised oil, its temperature reaches maximum, is now the high temperature deodorization processed oil of not yet lowering the temperature with what treat deodorised oil heat exchange, cold and hot oil still has the larger temperature difference, and heat transfer effect is still fine.(4) on deodorization processed oil, the interchanger vacuum-pumping tube of tank top is connected with vacuum extractor, and the center of each heat exchanger tube is in breakthrough status, keeps tube side to be in vacuum state, ensures the quality of deodorization processed oil.(5) this vacuum oil interchanger, assisting enhancing heat exchange efficiency without the need to additionally introducing one vapour stream again, avoiding deodorization processed oil to produce the possibility of hydrolysis in the process completely, reducing the load of vacuum extractor simultaneously.(6) after deodorization processed oil flows out from deodorization processed oil inlet pipe, first oil distributing plate is entered, flow out downwards from the cloth oilhole of oil distributing plate base plate again, projection due to each cloth oilhole is evenly distributed on the periphery of corresponding heat exchanger tube upper orifice, therefore the deodorization processed oil flowed out from each cloth oilhole, from entering in tubulation from mouth of pipe overflow equably, flows downward along tube wall in evenly membranaceous; Both ensure that the oil mass flowing into each heat exchanger tube was even, turn avoid certain heat exchanger tube because the oil mass flow passage of barrier gas comparatively greatly.(7) each serrated slot is similar to weir notch, is convenient to deodorization processed oil and flows in tubulation from the indentation, there of serrated slot.
As improvement of the present invention, multilayer tower tray deodorization device is provided with along short transverse in described deodorizing tower lower housing, each described tower tray deodorization device comprises respectively and cuts off housing cross-sectional and the oil storage disc of upward opening, the oil level of keeping certain height in each described oil storage disc and be distributed with steam loop respectively bottom oil storage disc, each described steam loop is connected with stirring steam inlet pipe and steam loop is evenly provided with multiple nozzle respectively respectively, the upper end of each described stirring steam inlet pipe respectively higher than place oil storage disc oil level line and stretch out outside described deodorizing tower lower housing, the oil storage disc being positioned at upper strata is respectively equipped with fluid-tight upflow tube, the upper port of each described fluid-tight upflow tube is lower than the oil level line of place oil storage disc, the lower end of each described fluid-tight upflow tube is positioned at below the oil storage disc oil level line of lower floor, gas-phase space between each layer tower tray deodorization device between each layer tower tray deodorization device above described isolation tower tray or below described isolation tower tray is mutually through respectively by deodorizing tower permeability cell, each described deodorizing tower permeability cell be positioned at the center of corresponding oil storage disc and upper end higher than the oil level line of place oil storage disc, lower end is equal with the bottom of corresponding oil storage disc, oil pooling dipper bottom is inserted in the lower end of described plate tower section oil inlet pipe, and described oil pooling dipper to be placed in below described isolation tower tray the oil storage disc of most top layer, and the mouth of pipe of described plate tower section oil inlet pipe is higher than described oil pooling dipper and stretch out from described deodorizing tower lower housing, the lower end of the described fluid-tight upflow tube of described isolation tower tray last layer is inserted in the bottom of described oil pooling dipper.(1) in deodorizing tower lower housing, vegetables oil is downward through each oil storage disc successively by the fluid-tight upflow tube of each layer, and the oil in last layer oil storage disc can be delivered to lower one deck oil storage disc by fluid-tight upflow tube, plays again the effect of fluid-tight; Steam enters the steam loop bottom oil storage disc from stirring steam inlet pipe, spray from each nozzle again, water vapor and vegetables oil fully contact and circulate up and down with the oil in Moving plate and stir, and vegetables oil stops the regular hour in each oil storage disc, isolation tower tray above each layer tower tray deodorization device in, water vapor and distill out low component stink substance effusion; In each layer tower tray deodorization device below isolation tower tray, pigment residual in oil, non-volatility superoxide are able to cracking and remove; Last deodorization processed oil is discharged tower from the plate tower section oil outlet pipe bottom deodorizing tower lower housing.(2) water vapor and the stink substance that distills out enter upper strata step by step from deodorizing tower permeability cell, and the gas below isolation tower tray is discharged from plate tower section vacuum-pumping tube, and the gas above isolation tower tray is discharged from packing section vacuum-pumping tube.(3) when system just puts into operation or the oil storage disc of the Ban Taduan the superiors does not come into operation, because the volume of oil pooling dipper is much smaller than oil storage disc, a small amount of trapped fuel in oil pooling dipper can play rapidly the effect of fluid-tight, by gas-phase space isolation upper and lower for isolation tower tray.
As improvement of the present invention, the top of described deodorized distillate trapping tower is provided with trapping tower vacuum orifice, the bottom of described deodorized distillate trapping tower is provided with dimension E and traps packing layer, the below that described dimension E traps packing layer is connected with dimension E trapping solution holding tank, the middle part of described dimension E trapping solution holding tank is connected with deodorized distillate entrance, and the bottom of described dimension E trapping solution holding tank is provided with dimension E trapping solution outlet pipe; The top that described dimension E traps packing layer is provided with multiple nozzle trapping the even cloth liquid of packing layer to dimension E, and each described nozzle is arranged on dimension E trapping solution inlet tube respectively; Be provided with lipid acid trapping solution collection bucket above described dimension E trapping solution inlet tube, the bottom of described lipid acid trapping solution collection bucket is connected with lipid acid trapping solution outlet pipe, and the lower end of described lipid acid trapping solution outlet pipe is stretched out outside tower body; The center of described lipid acid trapping solution collection bucket is provided with the permeability cell being communicated with tower body upper and lower gas-phase space, and the upper port of described permeability cell is covered with permeability cell top cap; The top of described permeability cell top cap is provided with lipid acid trapping packing layer, the top of described lipid acid trapping packing layer is provided with the lipid acid trapping solution divider to its even cloth liquid, the liquid-inlet pipe of described lipid acid trapping solution divider is connected with lipid acid trapping solution inlet tube, described lipid acid trapping solution inlet tube stretches out tower body from the upper body of described deodorized distillate trapping tower, is provided with wire mesh demister between described lipid acid trapping solution inlet tube and described trapping tower vacuum orifice.(1) the deodorized distillate entrance of stink substance in the middle part of dimension E trapping solution holding tank be drawn out of from deodorizing tower enters deodorized distillate trapping tower, and under the suction function of trapping tower vacuum orifice, gas flows from bottom to top, first traps packing layer through dimension E; The dimension E trapping solution that temperature is higher enters tower body Lower Half from dimension E trapping solution inlet tube, and trap packing layer from each nozzle ejection spread at dimension E, trapping packing layer along dimension E is that film like flows downward, dimension E trapping solution and the countercurrent flow of deodorization air-flow, because the dimension E boiling point in deodorization air-flow is higher, first be captured by the dimension E trapping solution condensation of high temperature, fall into dimension E trapping solution holding tank, discharge tower from dimension E trapping solution outlet pipe.Again because the boiling point of lipid acid is far below the boiling point of dimension E, the dimension E trapping solution of high temperature can not make the lipid acid in deodorization air-flow reach boiling point and condensation, and lipid acid gas continues upwards to flow, and enters the trapping tower first half from permeability cell, enters lipid acid trapping packing layer; The lipid acid trapping solution that temperature is lower enters the tower body first half from lipid acid trapping solution inlet tube, drench on lipid acid trapping packing layer by lipid acid trapping solution divider, trapping packing layer along lipid acid is that film like flows downward, lipid acid trapping solution and air-flow countercurrent flow, lipid acid gas reaches boiling point by lipid acid trapping solution condensing trapping, fall into lipid acid trapping solution collection bucket, discharge tower from lipid acid trapping solution outlet pipe.(2) wire mesh demister can dam the foam of air-flow, prevents from entering in pumped vacuum systems.(3) according to the principle of boiling point higher than lipid acid boiling point tieing up E, adopt the method for two section trapping, by first inputting high temperature trapping solution trapping dimension E, input cryogenic trapping liquid trapping lipid acid again, realize branch from deodorization distillate and extract the object of dimension E and lipid acid, the concentration of dimension E can reach the 15-20% of dimension E trapping solution weight, substantially increases the concentration of dimension E, reduces the cost of recycling.(4) due in deodorization air-flow, tie up the content of content far below lipid acid of E, the internal circulating load of dimension E trapping solution is smaller, adopts nozzle spray cloth liquid.And the internal circulating load that lipid acid trapping solution needs is larger, cloth liquid is sprayed as also adopted nozzle, then easily be atomized, the atomizing droplet of trapping solution is caused to enter pumped vacuum systems from trapping tower vacuum orifice, therefore lipid acid trapping solution divider is adopted, even cloth liquid can be ensured, larger flow can be kept again.
As a further improvement on the present invention, also comprise dimension E trapping solution well heater, dimension E trapping solution water cooler, lipid acid trapping solution well heater and lipid acid trapping solution water cooler, described dimension E trapping solution outlet pipe is connected with the described entrance tieing up E trapping solution well heater, the outlet of described dimension E trapping solution well heater is connected with the described entrance tieing up E trapping solution water cooler by dimension E trapping solution transferpump, the outlet of described dimension E trapping solution water cooler is connected with described E trapping solution inlet tube of tieing up, described dimension E trapping solution conveying pump outlet is also connected with dimension E trapping solution delivery pipe by dimension E trapping solution bleed valve, described lipid acid trapping solution outlet pipe is connected with the entrance of described lipid acid trapping solution well heater, the outlet of described lipid acid trapping solution well heater is connected by the entrance of lipid acid trapping solution transferpump with described lipid acid trapping solution water cooler, the outlet of described lipid acid trapping solution water cooler is connected with described lipid acid trapping solution inlet tube, and described lipid acid trapping solution conveying pump outlet is also connected with lipid acid trapping solution delivery pipe by lipid acid trapping solution bleed valve.(1) tie up E trapping solution and enter dimension E trapping solution well heater from the outflow of dimension E trapping solution outlet pipe, in dimension E trapping solution well heater by steam indirect heating after, the a little higher than required temperature of temperature, dimension E trapping solution water cooler is delivered to by dimension E trapping solution transferpump, in dimension E trapping solution water cooler, recirculated cooling water cools indirectly to it, the temperature of dimension E trapping solution is accurately adjusted to required temperature, then enters dimension E trapping solution inlet tube spray; The trapping of dimension E trapping solution circulated sprinkling, finally opens dimension E trapping solution bleed valve and discharges from dimension E trapping solution delivery pipe.(2) lipid acid trapping solution flows out from lipid acid trapping solution outlet pipe and enters lipid acid trapping solution well heater, in lipid acid trapping solution well heater by steam indirect heating after, the a little higher than required temperature of temperature, lipid acid trapping solution water cooler is delivered to by lipid acid trapping solution transferpump, in lipid acid trapping solution water cooler, recirculated cooling water cools indirectly to it, the temperature of lipid acid trapping solution is accurately adjusted to required temperature, then enters lipid acid trapping solution inlet tube; Cloth trapping is drenched in the circulation of lipid acid trapping solution, finally opens lipid acid trapping solution bleed valve and discharges from lipid acid trapping solution delivery pipe.
As improvement of the present invention, the temperature out of described dimension E trapping solution well heater is 200 DEG C, and the temperature out of described dimension E trapping solution water cooler is 180 DEG C; The temperature out of described lipid acid trapping solution well heater is 80 DEG C, and the temperature out of described lipid acid trapping solution water cooler is 55 DEG C.Absolute pressure in tower body is when 2mbar, and the dimension E trapping solution of 180 DEG C can dimension E condensing trapping, and now lipid acid is far from reaching boiling point, still flows to the first half for gaseous state.Absolute pressure in tower body is when 2mbar, and the lipid acid trapping solution of 55 DEG C by lipid acid condensing trapping, although this temperature is far below the boiling point of dimension E, can trap, now for lipid acid enters lipid acid trapping solution owing to tieing up E in advance.
As improvement of the present invention, described lipid acid trapping solution divider comprises the total liquid bath of divider, divider divides liquid bath and drenches liquid plate, the axis of each described pouring liquid plate is the level of state, be parallel to each other and drench the top that liquid plate is evenly arranged in described lipid acid trapping packing layer, the upper end of each described pouring liquid plate is separately fixed at the bottom that described divider divides liquid bath, and described divider divides the pouring fluid apertures lower sides of liquid bath being respectively equipped with the upper end cloth liquid to described pouring liquid plate, each described pouring fluid apertures is uniformly distributed along the length direction of corresponding pouring liquid plate respectively, the total liquid bath of described divider divides flume supplement across to divide at each described divider above liquid bath and be provided with fluid infusion hole respectively to each divider, the middle part in each described pouring liquid plate height direction is protruded to side and is formed perpendicular wall, and the two ends up and down of described perpendicular wall are respectively the inclined-plane tilted to opposite side.(1) lipid acid trapping solution is introduced into the total liquid bath of divider from lipid acid trapping solution inlet tube, flow into each divider from the fluid infusion hole of the total liquid bath of divider again and divide liquid bath, under gravity, divide the pouring fluid apertures of liquid bath to flow to the upper end of each pouring liquid plate by each divider again, each pouring liquid plate is formed film and to flow downward pouring cloth along drenching liquid plate; Be evenly arranged in the top of lipid acid trapping packing layer owing to drenching liquid plate, even cloth liquid can be realized, compared with nozzle, turn improve cloth liquid measure and avoid atomization.(2) after lipid acid trapping solution divides the pouring fluid apertures of liquid bath to flow out from divider, first drop on and drench on liquid plate inclined-plane upwards, again along this inclined-plane to downstream on perpendicular wall, in this process, liquid film is uniformly distributed gradually on the overall length direction drenching liquid plate, when arriving bottom perpendicular wall under the effect of viscosity, continue, along the flowing of downward inclined-plane, constantly have trapping solution to fall the pouring liquid band forming one fixed width under gravity on downward inclined-plane in flow process, even spread is on lipid acid trapping packing layer downwards.
As improvement of the present invention, also comprise ammonia refrigeration system and two dry types freeze condenser, described dry type freezes the freezing apparatus housing that condenser comprises axis horizontal, one end of described freezing apparatus housing is closed by tube sheet, the frozen device fixed seal head of the other end is closed, described tube sheet is provided with the many U-shaped refrigeration agent tubulations be connected with described ammonia refrigeration system, each U-shaped refrigeration agent tubulation extends along the axis of freezing apparatus housing to described freezing apparatus fixed seal head end, described tube sheet outer side covers has freezing apparatus flange end socket, the front side of described freezing apparatus housing is provided with the arc forwards protruded and expands shell, the front end face of described arc expansion shell is evenly distributed with at least two freezing apparatus inlet mouths, the axis of each described freezing apparatus inlet mouth is horizontal and perpendicular to the axis of described freezing apparatus housing, length direction along described U-shaped refrigeration agent tubulation is disposed with the tube bundle support baffle plate parallel with described tube sheet and multiple tube bundle support dividing plate, a condensing chamber is formed respectively between each described tube bundle support dividing plate, time condensation room is formed between described tube bundle support baffle plate and described tube sheet, the front end of described time condensation room and adjacent condensing chamber completely cut off mutually, are interconnected between the rear end of described time condensation room and each condensing chamber by freezing apparatus bleed-off passage, the housing of described time condensation room is provided with freezing apparatus bleeding point and is connected with freezing apparatus extraction pipe, and described freezing apparatus extraction pipe is connected with described pumped vacuum systems, the flow guide distribution plate making air-flow to each condensing chamber uniformly distributing is provided with between described freezing apparatus inlet mouth and a described condensing chamber, each described freezing apparatus inlet mouth is connected to ice-melt steam inlet, and the below of described time condensation room and each described condensing chamber is respectively equipped with ice-melt leakage fluid dram, and each described ice-melt leakage fluid dram is connected with ice-melt collecting pipe respectively, described freezing apparatus inlet mouth is connected with described trapping tower vacuum orifice, the outlet of described ice-melt collecting pipe is connected with the deicing fluid inlet except ice can, the described deicing overflow port except ice can is connected with the entrance of condensed fluid collection tank, the outlet of condensed fluid collection tank is connected with condensate drain, the described steam except being connected with indirect heating in ice can, the described deicing vapour outlet except ice can is connected with described ice-melt steam inlet.(1) mixed gas enters in arc expansion shell from freezing apparatus inlet mouth, enter each condensing chamber respectively simultaneously, most of condensable gases is removed after each condensing chamber freezes, residual gas enters the freezing apparatus bleed-off passage at each condensing chamber rear jointly, the further condensing, freezing in time condensation room is entered through freezing apparatus bleed-off passage, remove remaining condensable gases, finally discharge non-condensable gases from freezing apparatus bleeding point.(2) be equivalent to parallel connection between each condensing chamber, the effect freezed is identical, and the overall length and the gross area that make to freeze condenser are fully utilized, and one time condensing chamber is equivalent to connect with between time condensation room, carry out time condensation to check on, guarantee fully charge residue condensable gases.(3) due to a condensing chamber contact is the gas mixture that condensable gases content is the highest, therefore a condensing chamber parallel connection is provided with multiple; After a condensing chamber freezes, residual condensable gases seldom, only needs the time condensation room that an area is very little, makes refrigeration agent tubulation all can play well effect in overall length direction.(4) each condensing chamber is arranged in parallel, and front face area is large, and windage is little, and each condensing chamber can freeze full simultaneously, and there will not be some frozen full, all the other still vacant very large phenomenons, the work period is long; More can not occur because front is blocked, make air-flow be difficult to flow to the phenomenon at rear.(5) two are freezed condenser rotation and carry out freezing or ice-melt, when certain freeze condenser be covered with ice time, then stop freezing, steam heating is passed into in ice can, freeze condenser carry out ice-melt except the steam of ice can flash distillation enters from ice-melt steam inlet, liquid after thawing flow to ice-melt collecting pipe from each ice-melt leakage fluid dram and drains into except in ice can, except the completely rear overflow of ice can is in condensed fluid collection tank, then discharges from condensed fluid collection tank.
As a further improvement on the present invention, along the working direction of air-flow in each described condensing chamber, the arrangement pitches of described U-shaped refrigeration agent tubulation reduces gradually.Due to just contact refrigeration agent tubulation gas in condensable gases content high, freezing strength is large, and the tubulation gap ratio now contacted is comparatively large, meets and freezes the thick needs of ice sheet and ensure that air-flow is unobstructed; Along with the flowing backward of air-flow, the content of condensable gases significantly reduces, and freezing strength is little, and the tubulation spacing now contacted is smaller, still can ensure the unobstructed of air-flow.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation, and accompanying drawing only provides reference and explanation use, is not used to limit the present invention.
Fig. 1 is the schema of the vegetable oil deodorized system of the present invention.
Fig. 2 is the structural representation of deodorizing tower in the present invention.
Fig. 3 is the oil circuit figure of deodorizing tower in the present invention.
Fig. 4 is the front view of vacuum oil interchanger in the present invention.
Fig. 5 is the sectional view along C-C in Fig. 4.
Fig. 6 is the enlarged view at D position in Fig. 4.
Fig. 7 is the structural representation of deodorized distillate trapping tower in the present invention.
Fig. 8 is the front view of lipid acid trapping solution divider in Fig. 7.
Fig. 9 is the vertical view of Fig. 8.
Figure 10 is the stereographic map of Fig. 8.
Figure 11 is the system diagram at deodorized distillate trapping tower position in the present invention.
Figure 12 is the front view freezing condenser in the present invention.
Figure 13 is the sectional view along E-E in Figure 12.
Figure 14 is the sectional view along F-F in Figure 12.
In figure: 1. vacuum oil interchanger; 1a. bellow expansion joint; 1b. treats deodorised oil inlet pipe; 1c. treats deodorised oil outlet pipe; 1d. heat exchanger traverse baffle; 1e. heat exchanger shell; 1f. interchanger upper tubesheet; 1g. interchanger lower tubesheet; Tank on 1h. deodorization processed oil; 1h1. interchanger vacuum-pumping tube; 1h2. deodorization processed oil inlet pipe; Tank under 1j. deodorization processed oil; 1k. deodorization export of finished oil pipe; 1m. heat exchanger tube; 1m1. distributes tube head; 1n. oil distributing plate; 1n1. cloth oilhole; 2. deodorizing tower; 201. deodorizing tower upper housings; 201a. packing section oil inlet pipe; 201b. oil dispenser; 201c. deodorizing tower filler; 202. deodorizing tower lower housings; 202a. catch tray; 202b. oil guide pipe; 202c. oil storage disc; 202d. stirs steam inlet pipe; 202e. steam loop; 202f. vapor-nozzle; 202g. fluid-tight upflow tube; 202h. deodorizing tower permeability cell; 202i. packing section oil outlet pipe; 202j. plate tower section oil inlet pipe; 202k. plate tower section oil outlet pipe; 202m. splashes oily catch tray; 202n. splashing oil pipe; 202p. oil pooling dipper; 203. isolation tower trays; The total vacuum-pumping tube of 204. deodorizing tower; 204a. packing section vacuum-pumping tube; 204b. plate tower section vacuum-pumping tube; A. packing section; B. plate tower section; 3. vacuum heater; 3a. vacuum heater inlet pipe; 3b. vacuum heater outlet pipe; 3c. vacuum heater vacuum orifice; 3d. vacuum heater stirs steam-in; 3e. vacuum heater heating steam inlet; 3f. vacuum heater condensation-water drain; 4. deodorised oil transferpump; 5. deodorized distillate trapping tower; 5a. ties up E trapping solution holding tank; 5a1. ties up E trapping solution outlet pipe; 5b. deodorized distillate entrance; 5c. ties up E and traps packing layer; 5d. ties up E trapping solution inlet tube; 5e. trapping solution nozzle; 5f. lipid acid trapping solution collection bucket; 5g. traps tower permeability cell; 5h. permeability cell top cap; 5j. lipid acid trapping packing layer; 5k. lipid acid trapping solution divider; The total liquid bath of 5k1. divider; 5k2. divider divides liquid bath; 5k3. drenches liquid plate; 5m. lipid acid trapping solution inlet tube; 5n. lipid acid trapping solution outlet pipe; 5p. wire mesh demister; 5q. traps tower vacuum orifice; 6. tie up E trapping solution well heater; 7. tie up E trapping solution transferpump; 8. tie up E trapping solution water cooler; 9. lipid acid trapping solution well heater; 10. lipid acid trapping solution transferpump; 11. lipid acid trapping solution water coolers; 12. freeze condenser; 12a. freezing apparatus housing; 12b. freezing apparatus flange end socket; 12c. freezing apparatus fixed seal head; 12d. arc expands shell; 12d1. freezing apparatus inlet mouth; 12e. flow guide distribution plate; 12f. tube bundle support dividing plate; 12g. tube bundle support baffle plate; 12h.U shape refrigeration agent tubulation; 12j. condensing chamber; 12k. time condensation room; 12k1. freezing apparatus bleeding point; 12m. freezing apparatus bleed-off passage; 12n. ice-melt steam inlet; 12p. ice-melt collecting pipe; 12q. freezing apparatus extraction pipe; 13. except ice can; 13a. deicing fluid inlet; 13b. deicing overflow port; 13c. deicing vapour outlet; 14. condensed fluid collection tanks; 14a. purges steam entrance; 15. one-level steam jet vacuum pumps; 16. second steam ejector vacuum pumps; 17. main condensers; 18. 3 grades of steam jet vacuum pumps; 19. auxiliary condensers; 20. water-ring vacuum pumps; 21. prime sealed cisterns; 22. final-stage seal tanks; 23. feeding spraying pumps; 24. product transportation pumps; V1. valve one; V2. valve two; V3. valve three; V4. valve four; V5. valve five; V6. E trapping solution bleed valve is tieed up; V7. E trapping solution by-pass valve is tieed up; V8. lipid acid trapping solution bleed valve; V9. lipid acid trapping solution by-pass valve; G1. E trapping solution delivery pipe is tieed up; G2. lipid acid trapping solution delivery pipe; G3. condensate drain; G4. finished product oil pipe.
Embodiment
As shown in Figure 1, vegetable oil deodorized system of the present invention comprises vacuum oil interchanger 1, deodorizing tower 2, vacuum heater 3, deodorised oil transferpump 4, deodorized distillate trapping tower 5 and freezes condenser 12.
As shown in Figure 2 and Figure 3, deodorizing tower 2 comprises interconnective deodorizing tower upper housing 201 and deodorizing tower lower housing 202, the top of deodorizing tower upper housing 201 is connected with packing section oil inlet pipe 201a, the center of oil dispenser 201b is aimed in the outlet of packing section oil inlet pipe 201a downwards, and the below of oil dispenser 201b is until the underfill of deodorizing tower upper housing 201 has deodorizing tower filler 201c; The bottom of deodorizing tower lower housing 202 is provided with plate tower section oil outlet pipe 202k, the top of deodorizing tower lower housing 202 is provided with and housing cavity is divided into upper and lower two-part isolation tower tray 203, and deodorizing tower upper housing 201 and isolation tower tray 203 are formed packing section A jointly with upper part; The part that deodorizing tower lower housing 202 is positioned at isolation tower tray less than 203 forms plate tower section B; The bottom of packing section A is connected with packing section oil outlet pipe 202i; The upper body of plate tower section B is connected with plate tower section oil inlet pipe 202j.The top of deodorizing tower upper housing 201 is connected with packing section vacuum-pumping tube 204a, the deodorizing tower lower housing 202 on plate tower section top is connected with plate tower section vacuum-pumping tube 204b, the other end of packing section vacuum-pumping tube 204a and the other end of plate tower section vacuum-pumping tube 204b are connected to the two ends of the total vacuum-pumping tube 204 of deodorizing tower, and the middle part of the total vacuum-pumping tube 204 of deodorizing tower is connected with pumped vacuum systems.
Be provided with multilayer tower tray deodorization device along short transverse in deodorizing tower lower housing 202, preferably the top of isolation tower tray is provided with two-layer tower tray deodorization device, and the below of isolation tower tray 203 is provided with four layers of tower tray deodorization device.Each tower tray deodorization device comprises respectively and cuts off housing cross-sectional and the oil storage disc 202c of upward opening, the oil level of keeping certain height in each oil storage disc 202c and be distributed with steam loop 202e respectively bottom oil storage disc 202c, each steam loop 202e is connected with stirring steam inlet pipe 202d and steam loop 202e is evenly provided with multiple vapor-nozzle 202f respectively respectively, the upper end of each stirring steam inlet pipe 202d respectively higher than place oil storage disc 202c oil level line and stretch out outside deodorizing tower lower housing 202, the oil storage disc 202c being positioned at upper strata is respectively equipped with fluid-tight upflow tube 202g, the upper port of each fluid-tight upflow tube 202g is lower than the oil level line of place oil storage disc 202c, the lower end of each fluid-tight upflow tube 202g is positioned at below the oil storage disc oil level line of lower floor, gas-phase space between each layer tower tray deodorization device between each layer tower tray deodorization device above isolation tower tray 203 or below isolation tower tray 203 is mutually through respectively by deodorizing tower permeability cell 202h, each deodorizing tower permeability cell 202h be positioned at the center of corresponding oil storage disc 202c and upper end higher than the oil level line of place oil storage disc 202c, lower end is equal with the bottom of corresponding oil storage disc.
The top center of deodorizing tower lower housing 202 is provided with catch tray 202a, catch tray 202a to be positioned at immediately below deodorizing tower filler 201c and to be greater than the cross section of deodorizing tower upper housing 201, the center of catch tray 202a is connected with oil guide pipe 202b, below the oil level line of lower floor oil storage disc 202c is inserted in the lower end of oil guide pipe 202b, vegetables oil from deodorizing tower filler 201c drenches falls into catch tray 202a, then enters lower floor oil storage disc 202c by oil guide pipe 202b.
Oil pooling dipper 202p bottom is inserted in the lower end of plate tower section oil inlet pipe 202j, and oil pooling dipper 202p to be placed in below isolation tower tray the oil storage disc of most top layer, and the mouth of pipe of plate tower section oil inlet pipe 202j is higher than oil pooling dipper 202p and stretch out from deodorizing tower lower housing 202; The lower end of the fluid-tight upflow tube of isolation tower tray last layer is inserted in the bottom of oil pooling dipper 202p.When system just puts into operation or the oil storage disc of the Ban Taduan the superiors does not come into operation, because the volume of oil pooling dipper is much smaller than oil storage disc, a small amount of trapped fuel in oil pooling dipper can play rapidly the effect of fluid-tight, by gas-phase space isolation upper and lower for isolation tower tray.
The mouth of pipe of packing section oil outlet pipe 202i is lower than the upper port of the fluid-tight upflow tube 202g of place oil storage disc 202c, and when the valve open that packing section oil outlet pipe 202i exports, vegetables oil flows out from packing section oil outlet pipe 202i; When the valve closes of packing section oil outlet pipe outlet, vegetables oil flows into lower floor from fluid-tight upflow tube 202g.
The lowest part of last layer oil storage disc is respectively equipped with oil leak hole, and each layer oil leak hole is connected with evacuated tube respectively, each evacuated tube is separately installed with exhaust-valve and the lower end of evacuated tube is inserted in below the oil level line of lower one deck oil storage disc respectively.Open the exhaust-valve of certain one deck, the oil of this layer of oil storage disc just can be made to flow directly into lower one deck, thus regulate the number of plies of the actual tower tray deodorization device come into operation as required.
The below of deodorizing tower permeability cell 202h is bottom provided with the oily catch tray 202m that splashes, and the bottom of the oily catch tray 202m that splashes is connected with splashing oil pipe 202n, and the lower end of splashing oil pipe 202n is stretched out tower from the bottom of deodorizing tower lower housing 202, enters splashing oil tank.When steam stirs the oil in oil storage disc 202c, the oily foam having minority very little can be carried secretly by vapour stream and enter deodorizing tower permeability cell 202h, finally can drop down onto the splashing oil catch tray 202m being arranged in below, then derive tower from splashing oil pipe 202n.
As shown in Figures 4 to 6, vacuum oil interchanger 1 comprises heat exchanger shell 1e, the upper port of heat exchanger shell 1e is closed with interchanger upper tubesheet 1f, the lower port of heat exchanger shell 1e is closed with interchanger lower tubesheet 1g, the middle part of heat exchanger shell 1e short transverse is provided with bellow expansion joint 1a, and the inner chamber of heat exchanger shell 1e is provided with multiple tracks heat exchanger traverse baffle 1d in short transverse.The inner chamber of heat exchanger shell 1e is distributed with many heat exchanger tube 1m, the axis being parallel of each heat exchanger tube 1m in the axis of heat exchanger shell 1e and the two ends up and down of heat exchanger tube 1m stretch out from the pore of interchanger upper tubesheet 1f and interchanger lower tubesheet 1g respectively, the top of interchanger upper tubesheet 1f is connected with tank 1h on deodorization processed oil, the below of interchanger lower tubesheet 1g is connected with tank 1j under deodorization processed oil, the bottom of heat exchanger shell 1e connects and needs deodorised oil inlet pipe 1b, the top of heat exchanger shell 1e connects and needs deodorised oil outlet pipe 1c, on deodorization processed oil, the top of tank 1h is connected with interchanger vacuum-pumping tube 1h1, interchanger vacuum-pumping tube 1h1 is connected with the top of deodorizing tower lower housing 202, on deodorization processed oil, the middle part of tank 1h is provided with deodorization processed oil inlet pipe 1h2, and deodorization processed oil inlet pipe 1h2 is lower than packing section oil outlet pipe 202i.Under deodorization processed oil, the bottom of tank 1j is connected with deodorization export of finished oil pipe 1k.
Deodorization processed oil is provided with the oil distributing plate 1n of opening upwards in tank 1h, the center of oil distributing plate 1n is aimed in the outlet of deodorization processed oil inlet pipe 1h2, the base plate of oil distributing plate 1n is parallel to interchanger upper tubesheet 1f, the base plate of oil distributing plate 1n is distributed with multiple cloth oilhole 1n1, the projection of each cloth oilhole 1n1 is evenly distributed on the periphery of corresponding heat exchanger tube 1m upper orifice.
The upper orifice of each heat exchanger tube 1m is connected to the distribution tube head 1m1 higher than interchanger upper tubesheet 1f, and each distribution tube head 1m1 is circumferentially evenly distributed with multiple serrated slot, and the shape size height of each serrated slot is identical, is up big and down small V-shaped groove.
In work, after deodorization processed oil and deep fat flow out from deodorization processed oil inlet pipe 1h2, first oil distributing plate 1n is entered, flow out downwards from the cloth oilhole 1n1 of oil distributing plate base plate again, projection due to each cloth oilhole 1n1 is evenly distributed on the periphery of corresponding heat exchanger tube 1m upper orifice, each serrated slot is similar to weir notch, and deodorization processed oil flows in tubulation from the indentation, there of serrated slot and flows downward in evenly membranaceous.Along with increasing of oil level, the opening of V-shaped groove increases, and the oil mass in inflow pipe increases; Otherwise along with the reduction of oil level, the opening of V-shaped groove reduces, and the oil mass in inflow pipe reduces.Then deodorization processed oil enters tank 1j under deodorization processed oil, then discharges from deodorization export of finished oil pipe 1k, after product transportation pump 24 pump to energy-conservation heat exchange and cooling equipment heat exchange, delivers to finished product oil pipe G4.
Treat that deodorised oil is from treating that deodorised oil inlet pipe 1b is introduced into the bottom of heat exchanger shell 1e, under the effect of heat exchanger traverse baffle 1d, upwards flow along heat exchanger shell 1e complications, temperature raises gradually, treats that deodorised oil outlet pipe 1c flows out finally from top.Full height direction is countercurrent flow, temperature minimum until deodorised oil to enter from the bottom of heat exchanger shell 1e with lower the temperature after the heat exchange of deodorization processed oil, there is the larger temperature difference, good effect of heat exchange between the two; Along with treating that its temperature of upwards flowing of deodorised oil raises gradually, when flowing to the top of heat exchanger shell 1e until deodorised oil, its temperature reaches maximum, now the high temperature deodorization processed oil of not yet lowering the temperature with what treat deodorised oil heat exchange, cold and hot oil still has the larger temperature difference, and heat transfer effect is still fine.
On deodorization processed oil, the interchanger vacuum-pumping tube 1h1 at tank 1h top is connected with vacuum extractor, and the center of each heat exchanger tube 1m is in breakthrough status, keeps tube side to be in vacuum state, ensures the quality of deodorization processed oil.
The top of vacuum heater 3 is provided with vacuum heater vacuum orifice 3c, vacuum heater vacuum orifice 3c directly can be connected with packing section vacuum-pumping tube 204a, also the top of deodorizing tower upper housing 201 can be accessed, enter from the tangential direction of oil dispenser 201b place height, if with oily foam from vacuum heater vacuum orifice 3c expellant gas, can be removed by rotation in deodorizing tower.Cold oil enters from vacuum heater inlet pipe 3a, deep fat is discharged from vacuum heater outlet pipe 3b, stir steam to enter from vacuum heater stirring steam-in 3d, the high pressure steam of oil being carried out to indirect heating enters from vacuum heater heating steam inlet 3e, and water of condensation is discharged from vacuum heater condensation-water drain 3f.
Vacuum heater outlet pipe 3b is connected with plate tower section oil inlet pipe 202j by valve one V1, and is connected with packing section oil inlet pipe 201a by valve two V2; The outlet of plate tower section oil outlet pipe 202k is connected with the entrance of deodorised oil transferpump 4; The outlet of deodorised oil transferpump 4 is connected with packing section oil inlet pipe 201a by valve three V3, and be connected with the deodorization processed oil inlet pipe 1h2 of vacuum oil interchanger 1 by valve five V5, vacuum oil interchanger 1 treat that deodorised oil outlet pipe 1c is connected with vacuum heater inlet pipe 3a; Packing section oil outlet pipe 202i is connected with the deodorization processed oil inlet pipe 1h2 of vacuum oil interchanger 1 by valve four V4.
The total vacuum-pumping tube 204 of deodorizing tower is connected respectively by the top of packing section vacuum-pumping tube 204a and plate tower section vacuum-pumping tube 204b and deodorizing tower upper housing 201 and plate tower section top, packing section vacuum-pumping tube 204a is responsible for the vacuum tightness maintaining packing section, plate tower section vacuum-pumping tube 204b is responsible for the vacuum tightness of retaining plate tower section, respective bleeding highly is roughly equivalent to the half of whole deodorizing tower height, makes plate tower section have the condition of high vacuum degree identical with packing section.
In deodorizing tower upper housing 201, treat that deodorised oil is evenly spilled in deodorizing tower filler 201c through oil dispenser 201b, under gravity, treat that deodorised oil is that film like flows downward; The low component stink substance such as the water vapor upwards flowed from below and the lipid acid that distills out enters through deodorizing tower filler 201c, with flow downward treat deodorised oil counter current contact, deodorizing tower filler 201c provides the sufficient mass transfer surfaces needed for vapour-liquid contact to amass, in oil, most volatile matter removes rapidly in the process, and water vapor and the malodorous elements distilled out are extracted out outside tower through packing section vacuum-pumping tube 204a.In deodorizing tower lower housing 202, upper and lower two-part gas-phase space cuts off by isolation tower tray 203, each self-evacuating vacuum, and vegetables oil can isolate tower tray 203 with lower part with upper part by flowing to communicating pipe from isolation tower tray 203.
In deodorizing tower lower housing 202, vegetables oil is downward through each oil storage disc 202c successively by the fluid-tight upflow tube 202g of each layer, and the oil in last layer oil storage disc can be delivered to lower one deck oil storage disc by fluid-tight upflow tube 202g, plays again the effect of fluid-tight; Steam enters the steam loop 202e bottom oil storage disc 202c from stirring steam inlet pipe 202d, spray from each vapor-nozzle 202f again, water vapor and vegetables oil fully contact and circulate up and down with the oil in Moving plate and stir, and vegetables oil stops the regular hour in each oil storage disc, isolation tower tray 203 above each layer tower tray deodorization device in, water vapor and distill out low component stink substance effusion; In each layer tower tray deodorization device below isolation tower tray 203, pigment residual in oil, non-volatility superoxide are able to cracking and remove; Last deodorization processed oil is discharged tower from the plate tower section oil outlet pipe 202k bottom deodorizing tower lower housing 202.Water vapor and the stink substance distilled out enter upper strata step by step from deodorizing tower permeability cell 202h, and the gas below isolation tower tray 203 is discharged from plate tower section vacuum-pumping tube 204b, and the gas above isolation tower tray 203 is discharged from packing section vacuum-pumping tube 204a.
Treated deodorised oil before entering deodorizing tower through vacuum heater 3 heat temperature raising, be convenient to the stink substances such as the lipid acid in vegetables oil and overflow in deodorizing tower; Deodorization processed oil need cool the quality of guarantee oil under vacuo, for making full use of the heat energy in deodorization processed oil, by the deodorization processed oil of high temperature in vacuum oil interchanger 1 with low temperature treat that deodorised oil carries out indirect heat exchange, make deodorization processed oil obtain cooling down on the one hand, making after deodorised oil temperature is improved, enter vacuum heater 3 continues heat temperature raising on the other hand.
As shown in Figure 3, by the switching of valve, deodorizing tower can realize two kinds of flow processs, flow process one: valve-off one V1, valve three V3 and valve four V4, open valve two V2 and valve five V5, vegetables oil can be realized first flow through packing section and flow through plate tower section again, then enter the deodorization processed oil inlet pipe 1h2 of vacuum oil interchanger 1; In packing section, by the reverse convection of vapour stream and oil film, the volatile matter such as most of lipid acid can be removed; Enter plate tower section again, be downward through each oil storage disc 202c successively, fully contact, and stay for some time in oil storage disc with the water vapor sprayed into bottom oil storage disc, in oil, the superoxide of residual pigment, non-volatility is cleaved removes.
Flow process two: valve-off two V2 and valve five V5, opens valve one V1, valve three V3 and valve four V4, can realize vegetables oil and first flow through plate tower section and flow through packing section again, then enter the deodorization processed oil inlet pipe 1h2 of vacuum oil interchanger 1; For the vegetables oil that some oil product is slightly poor, because be wherein contained in impurity is easy to alluvial in the gap of filler, serious meeting causes the blocking of filler, now select advanced plate tower section, vegetables oil is utilized to have certain residence time in each oil storage disc 202c, make the impurity in oil obtain certain precipitation, and then enter packing section, the gap of filler can be avoided blocked.
As shown in Fig. 7 to Figure 11, the top of deodorized distillate trapping tower 5 is provided with trapping tower vacuum orifice 5q, the bottom of deodorized distillate trapping tower 5 is provided with dimension E and traps packing layer 5c, the below that dimension E traps packing layer 5c is connected with dimension E trapping solution holding tank 5a, the middle part of dimension E trapping solution holding tank 5a is connected with deodorized distillate entrance 5b, and the bottom of dimension E trapping solution holding tank 5a is provided with dimension E trapping solution outlet pipe 5a1;
The top that dimension E traps packing layer 5c is provided with multiple trapping solution nozzle 5e to the even cloth liquid of dimension E trapping packing layer, and each trapping solution nozzle 5e is arranged on dimension E trapping solution inlet tube 5d respectively; Be provided with lipid acid trapping solution collection bucket 5f above dimension E trapping solution inlet tube 5d, the bottom of lipid acid trapping solution collection bucket 5f is connected with lipid acid trapping solution outlet pipe 5n, and the lower end of lipid acid trapping solution outlet pipe 5n is stretched out outside tower body; The center of lipid acid trapping solution collection bucket 5f is provided with the trapping tower permeability cell 5g being communicated with tower body upper and lower gas-phase space, and the upper port of trapping tower permeability cell 5g is covered with permeability cell top cap 5h; The top of permeability cell top cap 5h is provided with lipid acid trapping packing layer 5j, the top of lipid acid trapping packing layer 5j is provided with the lipid acid trapping solution divider 5k to its even cloth liquid, the liquid-inlet pipe of lipid acid trapping solution divider 5k is connected with lipid acid trapping solution inlet tube 5m, lipid acid trapping solution inlet tube 5m stretches out tower body from the upper body of deodorized distillate trapping tower 5, is provided with wire mesh demister 5p between lipid acid trapping solution inlet tube 5m and trapping tower vacuum orifice 5q.
Lipid acid trapping solution divider 5k comprises the total liquid bath 5k1 of divider, divider divides liquid bath 5k2 and drenches liquid plate 5k3, the axis of each pouring liquid plate 5k3 is the level of state, be parallel to each other and drench the top that liquid plate 5k3 is evenly arranged in lipid acid trapping packing layer 5j, the upper end of each pouring liquid plate 5k3 is separately fixed at the bottom that divider divides liquid bath 5k2, and divider divides the pouring fluid apertures lower sides of liquid bath 5k2 being respectively equipped with the upper end cloth liquid to pouring liquid plate 5k3, each pouring fluid apertures is uniformly distributed along the length direction of corresponding pouring liquid plate respectively, divider total liquid bath 5k1 divides liquid bath 5k2 fluid infusion across to divide at each divider above liquid bath 5k2 and be provided with fluid infusion hole respectively to each divider.The middle part in each pouring liquid plate height direction is protruded to side and is formed perpendicular wall, and the two ends up and down of perpendicular wall are respectively the inclined-plane tilted to opposite side.
Lipid acid trapping solution is introduced into the total liquid bath 5k1 of divider from lipid acid trapping solution inlet tube 5m, flow into each divider from the fluid infusion hole of divider total liquid bath 5k1 again and divide liquid bath 5k2, under gravity, divide the pouring fluid apertures of liquid bath 5k2 to flow to the upper end of each pouring liquid plate 5k3 by each divider again, each pouring liquid plate is formed film and to flow downward pouring cloth along drenching liquid plate; Be evenly arranged in the top of lipid acid trapping packing layer 5j owing to drenching liquid plate, even cloth liquid can be realized, compared with trapping solution nozzle 5e, turn improve cloth liquid measure and avoid atomization.After lipid acid trapping solution divides the pouring fluid apertures of liquid bath 5k2 to flow out from divider, first drop on and drench on liquid plate inclined-plane upwards, again along this inclined-plane to downstream on perpendicular wall, in this process, liquid film is uniformly distributed gradually on the overall length direction drenching liquid plate, when arriving bottom perpendicular wall under the effect of viscosity, continue to flow along downward inclined-plane, on downward inclined-plane, constantly have trapping solution to fall the pouring liquid band forming one fixed width under gravity in flow process, evenly spread traps on packing layer 5j at lipid acid downwards.
Deodorized distillate trapping system also comprises dimension E trapping solution well heater 6, dimension E trapping solution water cooler 8, lipid acid trapping solution well heater 9 and lipid acid trapping solution water cooler 11.
Dimension E trapping solution outlet pipe 5a1 is connected with the entrance of dimension E trapping solution well heater 6, the outlet of dimension E trapping solution well heater 6 is connected by the entrance of dimension E trapping solution transferpump 7 with dimension E trapping solution water cooler 8, the outlet of dimension E trapping solution water cooler 8 is connected with dimension E trapping solution inlet tube 5d, and the outlet of dimension E trapping solution transferpump 7 is also connected with dimension E trapping solution delivery pipe G1 by dimension E trapping solution bleed valve V6.
Lipid acid trapping solution outlet pipe 5n is connected with the entrance of lipid acid trapping solution well heater 9, the outlet of lipid acid trapping solution well heater 9 is connected by the entrance of lipid acid trapping solution transferpump 10 with lipid acid trapping solution water cooler 11, the outlet of lipid acid trapping solution water cooler 11 is connected with lipid acid trapping solution inlet tube 5m, and the outlet of lipid acid trapping solution transferpump 10 is also connected with lipid acid trapping solution delivery pipe G2 by lipid acid trapping solution bleed valve V8.
In work, the deodorized distillate entrance 5b of stink substance in the middle part of dimension E trapping solution holding tank 5a be drawn out of from deodorizing tower enters deodorized distillate trapping tower 5, under the suction function of trapping tower vacuum orifice 5q, gas flows from bottom to top, first traps packing layer 5c through dimension E; Absolute pressure in tower body is when 2mbar, the dimension E trapping solution of 180 DEG C enters tower body Lower Half from dimension E trapping solution inlet tube 5d, and spray spread on dimension E trapping packing layer 5c from each trapping solution nozzle 5e, trapping packing layer 5c along dimension E is that film like flows downward, dimension E trapping solution and the countercurrent flow of deodorization air-flow, because the dimension E boiling point in deodorization air-flow is higher, first by 180 DEG C the condensation of dimension E trapping solution thus be captured, fall into dimension E trapping solution holding tank 5a, discharge tower from dimension E trapping solution outlet pipe 5a1.Again because the boiling point of lipid acid is far below the boiling point tieing up E, the dimension E trapping solution of 180 DEG C can not make the lipid acid in deodorization air-flow reach boiling point and condensation, lipid acid gas continues upwards to flow, and enters the trapping tower first half from trapping tower permeability cell 5g, enters lipid acid trapping packing layer 5j; The lipid acid trapping solution of 55 DEG C enters the tower body first half from lipid acid trapping solution inlet tube 5m, drench on lipid acid trapping packing layer 5j by lipid acid trapping solution divider 5k, trapping packing layer 5j along lipid acid is that film like flows downward, lipid acid trapping solution and air-flow countercurrent flow, lipid acid gas reaches boiling point by lipid acid trapping solution condensing trapping, fall into lipid acid trapping solution collection bucket 5f, discharge tower from lipid acid trapping solution outlet pipe 5n.
Wire mesh demister 5p can dam the foam of air-flow, prevents from entering in pumped vacuum systems.According to the principle of boiling point higher than lipid acid boiling point tieing up E, adopt the method for two section trapping, tie up E by the trapping solution trapping first inputting 180 DEG C, then input the trapping solution trapping lipid acid of 55 DEG C, realize branch from deodorization distillate and extract the object of dimension E and lipid acid.
Dimension E trapping solution flows out from dimension E trapping solution outlet pipe 5a1 and enters dimension E trapping solution well heater 6, in dimension E trapping solution well heater 6 by steam indirect heating after, the a little higher than required temperature of temperature is such as 200 DEG C, dimension E trapping solution water cooler 8 is delivered to by dimension E trapping solution transferpump 7, in dimension E trapping solution water cooler 8, recirculated cooling water cools indirectly to it, the temperature of dimension E trapping solution is accurately adjusted to required temperature that is 180 DEG C, then enters dimension E trapping solution inlet tube 5d spray.The import and export of dimension E trapping solution water cooler 8 are connected by dimension E trapping solution by-pass valve V7, can tie up E trapping solution by-pass valve V7 and realize bypass time suitable.The trapping of dimension E trapping solution circulated sprinkling, finally open dimension E trapping solution bleed valve V6 and discharge from dimension E trapping solution delivery pipe G1, the concentration of dimension E can reach the 15-20% of dimension E trapping solution weight, substantially increases the concentration of dimension E, reduces the cost of recycling.Absolute pressure in tower body is when 2mbar, and the dimension E trapping solution of 180 DEG C can dimension E condensing trapping, and now lipid acid is far from reaching boiling point, still flows to the first half for gaseous state.
Lipid acid trapping solution flows out from lipid acid trapping solution outlet pipe 5n and enters lipid acid trapping solution well heater 9, in lipid acid trapping solution well heater 9 by steam indirect heating after, the a little higher than required temperature of temperature is such as 80 DEG C, lipid acid trapping solution water cooler 11 is delivered to by lipid acid trapping solution transferpump 10, in lipid acid trapping solution water cooler 11, recirculated cooling water cools indirectly to it, the temperature of lipid acid trapping solution is accurately adjusted to required temperature that is 55 DEG C, then enters lipid acid trapping solution inlet tube 5m cloth liquid.The import and export of lipid acid trapping solution water cooler 11 are connected by lipid acid trapping solution by-pass valve V9, can open lipid acid trapping solution by-pass valve V9 and realize bypass time suitable.Cloth trapping is drenched in the circulation of lipid acid trapping solution, finally opens lipid acid trapping solution bleed valve V8 and discharges from lipid acid trapping solution delivery pipe G2.The lipid acid trapping solution of 55 DEG C by lipid acid condensing trapping, although this temperature is far below the boiling point of dimension E, can trap, now for lipid acid enters lipid acid trapping solution owing to tieing up E in advance.
As shown in Figure 12 to Figure 14, dry type freezes the freezing apparatus housing 12a that condenser 12 comprises axis horizontal, one end of freezing apparatus housing 12a is closed by tube sheet, the other end frozen device fixed seal head 12c closes, tube sheet is provided with many U-shaped refrigeration agent tubulation 12h, each U-shaped refrigeration agent tubulation 12h extends along the axis of freezing apparatus housing 12a to freezing apparatus fixed seal head end, tube sheet outer side covers has freezing apparatus flange end socket 12b, the front side of freezing apparatus housing 12a is provided with the arc forwards protruded and expands shell 12d, the front end face of arc expansion shell 12d is evenly distributed with at least two freezing apparatus inlet mouth 12d1, the axis of each freezing apparatus inlet mouth 12d1 is horizontal and perpendicular to the axis of freezing apparatus housing 12a, length direction along U-shaped refrigeration agent tubulation 12h is disposed with the tube bundle support baffle plate 12g parallel with tube sheet and multiple tube bundle support dividing plate 12f, interval between each tube bundle support dividing plate 12f is even, and form a condensing chamber 12j respectively between adjacent tube bundle support dividing plate, time condensation room 12k is formed between tube bundle support baffle plate 12g and tube sheet, the front end of time condensation room 12k and adjacent condensing chamber 12j completely cut off mutually, are interconnected between the rear end of time condensation room 12k and each condensing chamber 12j by freezing apparatus bleed-off passage 12m, the housing of time condensation room 12k is provided with freezing apparatus bleeding point 12k1 and is connected with freezing apparatus extraction pipe 12q.The flow guide distribution plate 12e making air-flow to each condensing chamber 12j uniformly distributing is provided with between a freezing apparatus inlet mouth 12d1 and condensing chamber 12j.
Each freezing apparatus inlet mouth 12d1 is connected to ice-melt steam inlet 12n, and the below of time condensation room 12k and each condensing chamber 12j is respectively equipped with ice-melt leakage fluid dram, and each ice-melt leakage fluid dram is connected with ice-melt collecting pipe 12p respectively.Freezing apparatus inlet mouth is connected with trapping tower vacuum orifice, the outlet of ice-melt collecting pipe is connected with the deicing fluid inlet 13a except ice can 13, except the deicing overflow port 13b of ice can 13 is connected with the entrance of condensed fluid collection tank 14, the outlet of condensed fluid collection tank 14 is connected with condensate drain G3, during discharge opeing, purge steam from the entrance 14a that purges steam and enter, condensed fluid collection tank 14 is drained.Except the steam being connected with indirect heating in ice can 13, except the deicing vapour outlet 13c of ice can is connected with ice-melt steam inlet.
Along the working direction of air-flow in each condensing chamber 12j, the arrangement pitches of U-shaped refrigeration agent tubulation 12h reduces gradually.The front and back of tube bundle support dividing plate 12f are all jagged, before be air inlet side, rear portion forms freezing apparatus bleed-off passage 12m.The rear portion breach of tube bundle support baffle plate 12g forms freezing apparatus bleed-off passage 12m, and anterior and air inlet side is isolated.Due to just contact refrigeration agent tubulation gas in condensable gases content high, freezing strength is large, and the tubulation gap ratio now contacted is comparatively large, meets and freezes the thick needs of ice sheet and ensure that air-flow is unobstructed; Along with the flowing backward of air-flow, the content of condensable gases significantly reduces, and freezing strength is little, and the tubulation spacing now contacted is smaller, still can ensure the unobstructed of air-flow.
In work, mixed gas enters arc from freezing apparatus inlet mouth 12d1 and expands in shell 12d, enter each condensing chamber 12j respectively simultaneously, most of condensable gases is removed after each condensing chamber 12j freezes, residual gas enters the freezing apparatus bleed-off passage 12m at each condensing chamber 12j rear jointly, enter the further condensing, freezing of time condensation room 12k through freezing apparatus bleed-off passage 12m, remove remaining condensable gases, finally discharge non-condensable gases from freezing apparatus bleeding point.Parallel connection is equivalent between each condensing chamber 12j, the effect freezed is identical, and the overall length and the gross area that make to freeze condenser are fully utilized, and one time condensing chamber 12j is equivalent to connect with between the 12k of time condensation room, carry out time condensation to check on, guarantee fully charge residue condensable gases.Due to a condensing chamber 12j contact is the gas mixture that condensable gases content is the highest, therefore condensing chamber 12j parallel connection is provided with multiple; After a condensing chamber 12j freezes, residual condensable gases seldom, only needs the time condensation room 12k that an area is very little, makes refrigeration agent tubulation all can play well effect in overall length direction.Each condensing chamber 12j is arranged in parallel, and front face area is large, and windage is little, and each condensing chamber 12j can freeze full simultaneously, and there will not be some frozen full, all the other still vacant very large phenomenons, the work period is long; More can not occur because front is blocked, make air-flow be difficult to flow to the phenomenon at rear.When certain freeze condenser be covered with ice time, then this stopping is freezed, and another input is freezed, and what be covered with ice enters ice-melt; Pass into steam from ice-melt steam inlet 12n and carry out ice-melt, liquid after thawing flow to ice-melt collecting pipe 12p from each ice-melt leakage fluid dram and discharges, enter except ice can 13 from deicing fluid inlet 13a, when expiring except liquid level in ice can 13, then flow to condensed fluid collection tank 14 from deicing overflow port 13b, store in condensed fluid collection tank completely and discharge from condensate drain G3.
Pumped vacuum systems comprises one-level steam jet vacuum pump 15, second steam ejector vacuum pump 16, three grades of steam jet vacuum pumps 18 and the water-ring vacuum pump 20 of connecting successively, and one-level steam jet vacuum pump 15, second steam ejector vacuum pump 16 and three grades of steam jet vacuum pumps 18 provide jet to vacuumize power by power steam respectively.The main condenser 17 power steam being carried out to condensation is provided with between second steam ejector vacuum pump 16 and three grades of steam jet vacuum pumps 18, the auxiliary condenser 19 power steam being carried out to condensation is provided with between three grades of steam jet vacuum pumps 18 and water-ring vacuum pump 20, the tube side of main condenser 17 and auxiliary condenser 19 walks gaseous media, and shell side walks recirculated cooling water.Main condenser 17 and auxiliary condenser tube side bottom are respectively equipped with water port, and water port inserts sealed cistern under water respectively by water shoot, and the water outlet of water-ring vacuum pump 20 also inserts sealed cistern under water by water shoot.Because main condenser 17 is positioned at prime, gaseous media is relatively dirty, and the easy bonding dirt of heat exchanging pipe inwall, be provided with spray header at the tube side top of main condenser 17, spray header is connected with the outlet of feeding spraying pump 23, and the suction inlet of feeding spraying pump 23 is connected with sealed cistern.
Sealed cistern is divided into prime sealed cistern 21 and final-stage seal tank 22, auxiliary condenser 19 and water-ring vacuum pump 20 arrange cleaner draining and enter final-stage seal tank 22, main condenser 17 arrange not too clean draining and enter prime sealed cistern 21, final-stage seal tank 22 by overflow port to prime sealed cistern 21 overflow, the overflow port of prime sealed cistern 21 is lower than final-stage seal tank 22, the water that final-stage seal tank 22 is relatively cleaned constantly fills into prime sealed cistern 21, then discharges from prime sealed cistern.
This vegetable oil deodorized system, by vacuum oil interchanger 1, had both made processed oil be lowered the temperature under vacuum, and had utilized again the waste heat of processed oil to carry out preheating to stock oil, saved the consumption for the energy sources.First carry out trapping by the effective constituent in deodorized distillate trapping tower 5 pairs of deodorization waste gas to reclaim, reclaim dimension E and lipid acid respectively, the recovery concentration of dimension E is increased substantially; Do not catch most gas to adopt again and freeze condenser 12 and carry out condensing, freezing, both thoroughly reclaimed effective constituent, and greatly reduced again the quantity discharged of waste gas, and decreased the pollution to environment, and greatly reduced the load of pumped vacuum systems simultaneously.
The absolute pressure of water-ring vacuum pump 20 suction inlet is 240mbar, the absolute pressure of three grades of steam jet vacuum pump 18 suction inlets is 60mbar, the absolute pressure of second steam ejector vacuum pump 16 suction inlet is 22mbar, the absolute pressure of one-level steam jet vacuum pump 15 suction inlet is 1.5mbar, the absolute pressure of trapping tower vacuum orifice 5q is 1.5mbar, the absolute pressure of deodorized distillate entrance 5b is 2mbar, and the absolute pressure of vacuum heater vacuum orifice 3c is 2mbar.
Treat that the oil temperature in deodorised oil inlet pipe 1b is 100 DEG C, treat that the oil temperature in deodorised oil outlet pipe 1c is 210 DEG C, the oil temperature in deodorization processed oil inlet pipe 1h2 is 240 DEG C, and the oil temperature in deodorization export of finished oil pipe 1k is 130 DEG C.
The pressure entering the indirect heating steam of vacuum heater 3 from vacuum heater heating steam inlet 3e is 55bar, and the pressure that purges steam entering condensed fluid collection tank 14 is 3bar, and the pressure entered except the indirect heating steam of ice can 13 is 3bar.
The foregoing is only the better possible embodiments of the present invention, non-ly therefore limit to scope of patent protection of the present invention.In addition to the implementation, the present invention can also have other embodiments.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop in the protection domain of application claims.The present invention can pass through without the technical characteristic described or adopt existing techniques in realizing, does not repeat them here.

Claims (9)

1. a vegetable oil deodorized system, comprise deodorizing tower, deodorized distillate trapping tower and pumped vacuum systems, described deodorizing tower comprises interconnective deodorizing tower upper housing and deodorizing tower lower housing, the top of described deodorizing tower upper housing is connected with packing section oil inlet pipe, the center of oil dispenser is aimed in the outlet of described packing section oil inlet pipe downwards, and the below of described oil dispenser is until the underfill of described deodorizing tower upper housing has deodorizing tower filler, the bottom of described deodorizing tower lower housing is provided with plate tower section oil outlet pipe, it is characterized in that: the top of described deodorizing tower lower housing is provided with and housing cavity is divided into upper and lower two-part isolation tower tray, and described deodorizing tower upper housing and described isolation tower tray are formed packing section jointly with upper part, the part that described deodorizing tower lower housing is positioned at below isolation tower tray forms plate tower section, the bottom of described packing section is connected with packing section oil outlet pipe, the upper body of described plate tower section is connected with plate tower section oil inlet pipe, the top of described deodorizing tower upper housing is connected with packing section vacuum-pumping tube, the deodorizing tower lower housing on described plate tower section top is connected with plate tower section vacuum-pumping tube, the other end of described packing section vacuum-pumping tube and the other end of described plate tower section vacuum-pumping tube are connected to the two ends of the total vacuum-pumping tube of deodorizing tower, the deodorized distillate entrance that middle part and the described deodorized distillate of the total vacuum-pumping tube of described deodorizing tower trap tower is connected, and the trapping tower vacuum orifice of described deodorized distillate trapping tower is connected with described pumped vacuum systems, also comprise vacuum oil interchanger and vacuum heater, the lower housing portion of described vacuum oil interchanger is provided with treats deodorised oil inlet pipe, the housing upper of described vacuum oil interchanger is provided with treats deodorised oil outlet pipe, the upper tubesheet top of described vacuum oil interchanger is connected with tank on deodorization processed oil, on described deodorization processed oil, the middle part of tank is connected with deodorization processed oil inlet pipe, described deodorization processed oil inlet pipe is lower than described packing section oil outlet pipe, the lower tubesheet bottom of described vacuum oil interchanger is connected with tank under deodorization processed oil, under described deodorization processed oil, the bottom of tank is connected with deodorization export of finished oil pipe, the outlet pipe of described vacuum heater is connected with described plate tower section oil inlet pipe by valve one, and is connected with described packing section oil inlet pipe by valve two, the outlet of described plate tower section oil outlet pipe is connected with the entrance of deodorised oil transferpump, described deodorised oil conveying pump outlet is connected with described packing section oil inlet pipe by valve three, and be connected with the deodorization processed oil inlet pipe of described vacuum oil interchanger by valve five, described vacuum oil interchanger treat that deodorised oil outlet pipe is connected with the inlet tube of described vacuum heater, described packing section oil outlet pipe is connected with the deodorization processed oil inlet pipe of described vacuum oil interchanger by valve four.
2. vegetable oil deodorized system according to claim 1, it is characterized in that: described vacuum oil interchanger, comprise heat exchanger shell, the upper port of described heat exchanger shell is closed with interchanger upper tubesheet, the lower port of described heat exchanger shell is closed with interchanger lower tubesheet, the inner chamber of described heat exchanger shell is distributed with many heat exchanger tubes, the axis being parallel of each described heat exchanger tube in the axis of described heat exchanger shell and the two ends up and down of heat exchanger tube stretch out from the pore of interchanger upper tubesheet and interchanger lower tubesheet respectively, it is characterized in that: the top of described interchanger upper tubesheet is connected with tank on deodorization processed oil, the below of described interchanger lower tubesheet is connected with tank under deodorization processed oil, the bottom of described heat exchanger shell connects and needs deodorised oil inlet pipe, the top of described heat exchanger shell connects and needs deodorised oil outlet pipe, on described deodorization processed oil, the top of tank is connected with interchanger vacuum-pumping tube, on described deodorization processed oil, the middle part of tank is provided with deodorization processed oil inlet pipe, under described deodorization processed oil, the bottom of tank is connected with deodorization export of finished oil pipe, described deodorization processed oil is provided with the oil distributing plate of opening upwards in tank, the center of oil distributing plate is aimed in the outlet of described deodorization processed oil inlet pipe, the base plate of described oil distributing plate is parallel to described interchanger upper tubesheet, the base plate of described oil distributing plate is distributed with multiple cloth oilhole, the projection of each described cloth oilhole is evenly distributed on the periphery of corresponding heat exchanger tube upper orifice, the upper orifice of each described heat exchanger tube is connected to the distribution tube head higher than described interchanger upper tubesheet, each described distribution tube head be circumferentially evenly distributed with multiple serrated slot, the shape size height of each described serrated slot is identical.
3. vegetable oil deodorized system according to claim 1, it is characterized in that: in described deodorizing tower lower housing, be provided with multilayer tower tray deodorization device along short transverse, each described tower tray deodorization device comprises respectively and cuts off housing cross-sectional and the oil storage disc of upward opening, the oil level of keeping certain height in each described oil storage disc and be distributed with steam loop respectively bottom oil storage disc, each described steam loop is connected with stirring steam inlet pipe and steam loop is evenly provided with multiple nozzle respectively respectively, the upper end of each described stirring steam inlet pipe respectively higher than place oil storage disc oil level line and stretch out outside described deodorizing tower lower housing, the oil storage disc being positioned at upper strata is respectively equipped with fluid-tight upflow tube, the upper port of each described fluid-tight upflow tube is lower than the oil level line of place oil storage disc, the lower end of each described fluid-tight upflow tube is positioned at below the oil storage disc oil level line of lower floor, gas-phase space between each layer tower tray deodorization device between each layer tower tray deodorization device above described isolation tower tray or below described isolation tower tray is mutually through respectively by deodorizing tower permeability cell, each described deodorizing tower permeability cell be positioned at the center of corresponding oil storage disc and upper end higher than the oil level line of place oil storage disc, lower end is equal with the bottom of corresponding oil storage disc, oil pooling dipper bottom is inserted in the lower end of described plate tower section oil inlet pipe, and described oil pooling dipper to be placed in below described isolation tower tray the oil storage disc of most top layer, and the mouth of pipe of described plate tower section oil inlet pipe is higher than described oil pooling dipper and stretch out from described deodorizing tower lower housing, the lower end of the described fluid-tight upflow tube of described isolation tower tray last layer is inserted in the bottom of described oil pooling dipper.
4. vegetable oil deodorized system according to claim 1, it is characterized in that: the top of described deodorized distillate trapping tower is provided with trapping tower vacuum orifice, the bottom of described deodorized distillate trapping tower is provided with dimension E and traps packing layer, the below that described dimension E traps packing layer is connected with dimension E trapping solution holding tank, the middle part of described dimension E trapping solution holding tank is connected with deodorized distillate entrance, and the bottom of described dimension E trapping solution holding tank is provided with dimension E trapping solution outlet pipe; The top that described dimension E traps packing layer is provided with multiple nozzle trapping the even cloth liquid of packing layer to dimension E, and each described nozzle is arranged on dimension E trapping solution inlet tube respectively; Be provided with lipid acid trapping solution collection bucket above described dimension E trapping solution inlet tube, the bottom of described lipid acid trapping solution collection bucket is connected with lipid acid trapping solution outlet pipe, and the lower end of described lipid acid trapping solution outlet pipe is stretched out outside tower body; The center of described lipid acid trapping solution collection bucket is provided with the permeability cell being communicated with tower body upper and lower gas-phase space, and the upper port of described permeability cell is covered with permeability cell top cap; The top of described permeability cell top cap is provided with lipid acid trapping packing layer, the top of described lipid acid trapping packing layer is provided with the lipid acid trapping solution divider to its even cloth liquid, the liquid-inlet pipe of described lipid acid trapping solution divider is connected with lipid acid trapping solution inlet tube, described lipid acid trapping solution inlet tube stretches out tower body from the upper body of described deodorized distillate trapping tower, is provided with wire mesh demister between described lipid acid trapping solution inlet tube and described trapping tower vacuum orifice.
5. vegetable oil deodorized system according to claim 4, it is characterized in that: also comprise dimension E trapping solution well heater, dimension E trapping solution water cooler, lipid acid trapping solution well heater and lipid acid trapping solution water cooler, described dimension E trapping solution outlet pipe is connected with the described entrance tieing up E trapping solution well heater, the outlet of described dimension E trapping solution well heater is connected with the described entrance tieing up E trapping solution water cooler by dimension E trapping solution transferpump, the outlet of described dimension E trapping solution water cooler is connected with described E trapping solution inlet tube of tieing up, described dimension E trapping solution conveying pump outlet is also connected with dimension E trapping solution delivery pipe by dimension E trapping solution bleed valve, described lipid acid trapping solution outlet pipe is connected with the entrance of described lipid acid trapping solution well heater, the outlet of described lipid acid trapping solution well heater is connected by the entrance of lipid acid trapping solution transferpump with described lipid acid trapping solution water cooler, the outlet of described lipid acid trapping solution water cooler is connected with described lipid acid trapping solution inlet tube, and described lipid acid trapping solution conveying pump outlet is also connected with lipid acid trapping solution delivery pipe by lipid acid trapping solution bleed valve.
6. vegetable oil deodorized system according to claim 5, is characterized in that: the temperature out of described dimension E trapping solution well heater is 200 DEG C, and the temperature out of described dimension E trapping solution water cooler is 180 DEG C; The temperature out of described lipid acid trapping solution well heater is 80 DEG C, and the temperature out of described lipid acid trapping solution water cooler is 55 DEG C.
7. vegetable oil deodorized system according to claim 4, it is characterized in that: described lipid acid trapping solution divider comprises the total liquid bath of divider, divider divides liquid bath and drenches liquid plate, the axis of each described pouring liquid plate is the level of state, be parallel to each other and drench the top that liquid plate is evenly arranged in described lipid acid trapping packing layer, the upper end of each described pouring liquid plate is separately fixed at the bottom that described divider divides liquid bath, and described divider divides the pouring fluid apertures lower sides of liquid bath being respectively equipped with the upper end cloth liquid to described pouring liquid plate, each described pouring fluid apertures is uniformly distributed along the length direction of corresponding pouring liquid plate respectively, the total liquid bath of described divider divides flume supplement across to divide at each described divider above liquid bath and be provided with fluid infusion hole respectively to each divider, the middle part in each described pouring liquid plate height direction is protruded to side and is formed perpendicular wall, and the two ends up and down of described perpendicular wall are respectively the inclined-plane tilted to opposite side.
8. vegetable oil deodorized system according to claim 4, it is characterized in that: also comprise ammonia refrigeration system and two dry types freeze condenser, described dry type freezes the freezing apparatus housing that condenser comprises axis horizontal, one end of described freezing apparatus housing is closed by tube sheet, the frozen device fixed seal head of the other end is closed, described tube sheet is provided with the many U-shaped refrigeration agent tubulations be connected with described ammonia refrigeration system, each U-shaped refrigeration agent tubulation extends along the axis of freezing apparatus housing to described freezing apparatus fixed seal head end, described tube sheet outer side covers has freezing apparatus flange end socket, the front side of described freezing apparatus housing is provided with the arc forwards protruded and expands shell, the front end face of described arc expansion shell is evenly distributed with at least two freezing apparatus inlet mouths, the axis of each described freezing apparatus inlet mouth is horizontal and perpendicular to the axis of described freezing apparatus housing, length direction along described U-shaped refrigeration agent tubulation is disposed with the tube bundle support baffle plate parallel with described tube sheet and multiple tube bundle support dividing plate, a condensing chamber is formed respectively between each described tube bundle support dividing plate, time condensation room is formed between described tube bundle support baffle plate and described tube sheet, the front end of described time condensation room and adjacent condensing chamber completely cut off mutually, are interconnected between the rear end of described time condensation room and each condensing chamber by freezing apparatus bleed-off passage, the housing of described time condensation room is provided with freezing apparatus bleeding point and is connected with freezing apparatus extraction pipe, and described freezing apparatus extraction pipe is connected with described pumped vacuum systems, the flow guide distribution plate making air-flow to each condensing chamber uniformly distributing is provided with between described freezing apparatus inlet mouth and a described condensing chamber, each described freezing apparatus inlet mouth is connected to ice-melt steam inlet, and the below of described time condensation room and each described condensing chamber is respectively equipped with ice-melt leakage fluid dram, and each described ice-melt leakage fluid dram is connected with ice-melt collecting pipe respectively, described freezing apparatus inlet mouth is connected with described trapping tower vacuum orifice, the outlet of described ice-melt collecting pipe is connected with the deicing fluid inlet except ice can, the described deicing overflow port except ice can is connected with the entrance of condensed fluid collection tank, the outlet of condensed fluid collection tank is connected with condensate drain, the described steam except being connected with indirect heating in ice can, the described deicing vapour outlet except ice can is connected with described ice-melt steam inlet.
9. vegetable oil deodorized system according to claim 8, is characterized in that: along the working direction of air-flow in each described condensing chamber, the arrangement pitches of described U-shaped refrigeration agent tubulation reduces gradually.
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