CN203540090U - Itaconic acid energy-saving-type four-effect concentrating and crystallizing device - Google Patents
Itaconic acid energy-saving-type four-effect concentrating and crystallizing device Download PDFInfo
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- CN203540090U CN203540090U CN201320636320.7U CN201320636320U CN203540090U CN 203540090 U CN203540090 U CN 203540090U CN 201320636320 U CN201320636320 U CN 201320636320U CN 203540090 U CN203540090 U CN 203540090U
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- JAHNSTQSQJOJLO-UHFFFAOYSA-N 2-(3-fluorophenyl)-1h-imidazole Chemical compound FC1=CC=CC(C=2NC=CN=2)=C1 JAHNSTQSQJOJLO-UHFFFAOYSA-N 0.000 title claims abstract description 41
- LVHBHZANLOWSRM-UHFFFAOYSA-N methylenebutanedioic acid Natural products OC(=O)CC(=C)C(O)=O LVHBHZANLOWSRM-UHFFFAOYSA-N 0.000 title claims abstract description 41
- 238000010438 heat treatment Methods 0.000 claims abstract description 182
- 239000000463 material Substances 0.000 claims abstract description 49
- 238000001704 evaporation Methods 0.000 claims abstract description 35
- 230000008020 evaporation Effects 0.000 claims abstract description 28
- 238000002425 crystallisation Methods 0.000 claims abstract description 17
- 230000008025 crystallization Effects 0.000 claims abstract description 16
- 239000002994 raw material Substances 0.000 claims abstract description 7
- 230000000694 effects Effects 0.000 claims description 308
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 28
- 239000010408 film Substances 0.000 claims description 16
- 239000011552 falling film Substances 0.000 claims description 13
- 230000000630 rising effect Effects 0.000 claims description 11
- 210000000056 organ Anatomy 0.000 claims description 8
- 238000003860 storage Methods 0.000 claims description 6
- 239000007788 liquid Substances 0.000 abstract description 40
- 238000000034 method Methods 0.000 abstract description 21
- 239000013078 crystal Substances 0.000 abstract description 7
- 239000002002 slurry Substances 0.000 abstract 1
- 238000000926 separation method Methods 0.000 description 13
- 239000000126 substance Substances 0.000 description 7
- 238000000855 fermentation Methods 0.000 description 5
- 230000004151 fermentation Effects 0.000 description 5
- 239000007787 solid Substances 0.000 description 5
- 238000009835 boiling Methods 0.000 description 4
- 238000009833 condensation Methods 0.000 description 4
- 230000005494 condensation Effects 0.000 description 4
- 239000000498 cooling water Substances 0.000 description 4
- 239000007791 liquid phase Substances 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 239000012141 concentrate Substances 0.000 description 3
- 238000007599 discharging Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 239000012043 crude product Substances 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 238000009834 vaporization Methods 0.000 description 2
- 230000008016 vaporization Effects 0.000 description 2
- FRXSZNDVFUDTIR-UHFFFAOYSA-N 6-methoxy-1,2,3,4-tetrahydroquinoline Chemical compound N1CCCC2=CC(OC)=CC=C21 FRXSZNDVFUDTIR-UHFFFAOYSA-N 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005342 ion exchange Methods 0.000 description 1
- 239000012452 mother liquor Substances 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
- 238000007738 vacuum evaporation Methods 0.000 description 1
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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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Abstract
The utility model discloses an itaconic acid energy-saving-type four-effect concentrating and crystallizing device which can realize the continuity of concentration and crystallization of an itaconic acid solution, that is, a raw material liquid enters a preheater continuously so as to evaporate moisture continuously by a single-effect heating and evaporating device, a second-effect heating and evaporating device, a triple-effect heating and evaporating device and a quadruple-effect heating and evaporating device as well as a single-effect separator, a second-effect separator, a triple-effect separator and a quadruple-effect separator; secondary steam separated from the previous separator enters the preheater or the next heating and evaporating device so as to heat and evaporate materials; meanwhile, crystals separated from the quadruple-effect separator are pumped out continuously by a crystal slurry pump, so that the process that charging as well as evaporation and concentration are not simultaneously carried out and crystals are continuously extracted is formed, so that a great amount of crystals can be formed in the four-effect separators by materials; the yield and the product quality are improved; the device utilization ratio is increased; the steam consumption is reduced by 50%.
Description
Technical field
The utility model relates to the technical field to the evaporating, concentrating and crystallizing of itaconic acid cleaner liquid, refers to specifically the energy-saving quadruple effect concentration and crystallization device of itaconic acid.
Background technology
At present, at home and abroad the production of itaconic acid generally adopts fermentation method.The method mainly comprises zymotic fluid cultivation, thalline after separating obtains itaconic acid fermentation liquid, resulting itaconic acid fermentation liquid obtains itaconic acid cleaner liquid through ion-exchange, activated carbon decolorizing, the itaconic acid cleaner liquid obtaining is carried out to the steps such as evaporation and concentration, coarse crystallization, smart crystallization, finally obtain itaconic acid crystal.
In the crystallization process of obtained by producing itaconic acid by fermentation, generally adopt continuous circulation evaporative crystallization technique.The patent document that for example patent No. is ZL201010617063.3, its disclosed name is called " extracting method of a kind of itaconic acid Continuous Heat crystallization ", comprise the following steps: first choose the itaconic acid fermentation liquid that fermenting and producing obtains, through pre-treatment step, make pretreatment feed liquid; Again pretreatment feed liquid is delivered in vacuum evaporation crystallizer, under the steam pressure of 0.3MPa～0.65MPa, carries out evaporation and concentration, obtain concentrate, then concentrate is carried out to continuous crystallisation repeatedly, obtain magma; Through magma, pass through centrifugal separation process again, obtain itaconic acid crystal crude product and mother liquor; Itaconic acid crystal crude product is further refined and purified through solution-off operation, finally obtain finished product itaconic acid.The deficiency that the method exists is that energy utilization rate is lower, and device efficiency is low.
Utility model content
The purpose of this utility model is to provide a kind of saving energy consumption and land use area, improves the energy-saving quadruple effect concentration and crystallization device of itaconic acid of capacity utilization.
For solving the problems of the technologies described above, technical solution adopted in the utility model is: the energy-saving quadruple effect concentration and crystallization device of a kind of itaconic acid, comprising:
Feed arrangement, comprises that entrance point is connected to the feed pump of raw material storage tank;
Preheating device, comprises that entrance point is connected to the preheater of the described feed pump port of export;
One effect concentrating and separating device, comprises the effect heating fumigators being connected with the port of export of described preheater, the effect separator being connected with an effect heating evaporation organ pipe, the effect circulating pump being connected with an effect separator;
Two effect concentrating and separating devices, comprise the two effect heating fumigators that are connected with the port of export of a described effect circulating pump, the two effect separators that are connected with two effect heating evaporation organ pipes, the two effect circulating pumps that are connected with two effect separators;
Triple effect concentrating and separating device, comprises the triple effect heating fumigators being connected with the port of export of described two effect circulating pumps, the triple effect separator being connected with triple effect heating evaporation organ pipe, the triple effect circulating pump being connected with triple effect separator; The port of export of described triple effect circulating pump has two material pipelines, and a material pipeline is connected to the material inlet end of quadruple effect heating fumigators, and another material pipeline is connected to the entrance point of preheater;
Quadruple effect concentrating and separating device, comprise the quadruple effect heating fumigators being connected with triple effect circulating pump, the quadruple effect separator being connected with quadruple effect heating evaporation organ pipe, the magma pump being connected with quadruple effect separator tube, the material inlet end pipe of described quadruple effect heating fumigators is connected with tubing pump, the entrance point pipe of described tubing pump connects the port of export of described triple effect circulating pump and the material outlet end of described quadruple effect separator, and the material outlet end pipe of described quadruple effect heating fumigators connects the material inlet of described quadruple effect separator.
Itaconic acid solution constantly pumps into described quadruple effect heating fumigators by tubing pump, and make solution constantly between quadruple effect heating fumigators and quadruple effect separator, carry out forced circulation, constantly concentrated educating under brilliant effect at quadruple effect separator, when solution reaches finite concentration, magma mixture in described quadruple effect separator enters centrifugal separation process through the discharge of magma pump and carries out Separation of Solid and Liquid, realizes continuous feeding and discharging.
As preferred version, the preheater in described device is for rising film preheater, and an effect heating fumigators, two effect heating fumigators and triple effect heating fumigators are falling film heating evaporimeter, and quadruple effect heating fumigators is for rising film heating fumigators.
As preferred version, in described device:
The steam inlet tube of described preheater connects the steam (vapor) outlet of outside vapour source and an effect separator;
The steam inlet tube of a described effect heating fumigators connects a steam heat delivery side of pump, and the inlet tube of this steam heat pump connects the steam (vapor) outlet of a vapor can and a described effect separator;
The steam inlet of described two effect heating fumigators connects the steam (vapor) outlet of an effect separator;
The steam inlet of described triple effect heating fumigators connects the steam (vapor) outlet of two effect separators;
The steam inlet of described quadruple effect heating fumigators connects the steam (vapor) outlet of triple effect separator;
The steam (vapor) outlet of described quadruple effect separator connects the steam inlet of condenser, and the condensating water outlet tube of described condenser is connected to pond;
The condensed water discharge outlet of described preheater is connected to pond;
The condensed water discharge outlet pipe of described two effect heating fumigators connects described triple effect heating fumigators, the condensed water discharge outlet pipe of described triple effect heating fumigators connects described quadruple effect heating fumigators, the condensed water discharge outlet of described quadruple effect heating fumigators connects condenser pump, and condenser pump connects pond;
The steam (vapor) outlet of a described effect heating fumigators, two effect heating fumigators, triple effect heating fumigators and quadruple effect heating fumigators divides don't bother about the steam inlet that is connected described condenser;
The steam outlet pipe of described condenser connects water-ring vacuum pump.
The beneficial effects of the utility model are: owing to having adopted said apparatus, can realize the continuity of itaconic acid solution condensing crystallizing, be that material liquid constantly enters preheater, through one, two, three, quadruple effect heating fumigators, one, two, three, quadruple effect separator, transpiring moisture constantly, the isolated indirect steam of a upper effect separator enters preheater or next effect heating fumigators, and material is carried out to heating evaporation; Simultaneously, in quadruple effect separator, isolated crystallization is constantly extracted out with magma pump, so just form the constantly process of taking-up of not limit charging, limit evaporation and concentration, crystalline solid, can make material form mass crystallization in quadruple effect separator, thereby improve production capacity and product quality, improve utilization rate of equipment and installations, reduce energy consumption.
Accompanying drawing explanation
Fig. 1 is the equipment connection schematic diagram of the utility model embodiment;
In figure: 1 steam heat pump, 2 preheaters, 3 one effect heating fumigators, 4 one effect separators, 5 two effect heating fumigators, 6 two effect separators, 7 triple effect heating fumigators, 8 triple effect separators, 9 quadruple effect heating fumigators, 10 quadruple effect separators, 11 condensers, 12 feed pumps, 13 1 effect circulating pumps, 14 2 effect circulating pumps, 15 triple effect circulating pumps, 16 magma pumps, 17 tubing pumps, 18 condenser pumps, 19 ponds, 20 cooling water pumps, 21 water-ring vacuum pumps, 22 vapor cans, 23 raw material storage tanks, 24 chilled water tanks;---represents materail tube;---represent steam pipe;------represents condensate pipe or cooling water pipe;
represent ball valve;
represent check-valves.
The specific embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
As shown in Figure 1, the energy-saving quadruple effect concentration and crystallization device of a kind of itaconic acid, comprising:
Feed arrangement, comprises and by materail tube, its entrance point is connected to the feed pump 12 of raw material storage tank 23;
Preheating device, comprises and by materail tube, its entrance point is connected to the preheater 2 of described feed pump 12 ports of export; Described preheater 2 is for rising film preheater.
One effect concentrating and separating device, comprises the effect heating fumigators 3 being connected by materail tube with the port of export of described preheater 2, with the effect separator 4 that effect heating fumigators 3 pipes are connected, and the effect circulating pump 13 being connected by materail tube with an effect separator 4.
The steam inlet tube of described preheater 2 connects the steam (vapor) outlet of outside vapour source (this external air source) and an effect separator 4; The steam inlet tube of a described effect heating fumigators 3 connects the outlet of a steam heat pump 1, and the inlet tube of this steam heat pump 1 connects the steam (vapor) outlet of a vapor can 22 and a described effect separator 4.
The outside vapour source that the steam inlet tube of described preheater 2 connects can be vapor can 22, can be also by steam heat pump 1, to be connected to the steam inlet of preheater 2.
Two effect concentrating and separating devices, comprise the two effect heating fumigators 5 that are connected by materail tube with the port of export of a described effect circulating pump 13, with the two effect separators 6 that two effect heating fumigators 5 pipes are connected, and the two effect circulating pumps 14 that are connected by materail tube with two effect separators 6.
The steam inlet of described two effect heating fumigators 5 connects the steam (vapor) outlet of a described effect separator 4.
Triple effect concentrating and separating device, comprise the triple effect heating fumigators 7 being connected by materail tube with the port of export of described two effect circulating pumps 14, with the triple effect separator 8 that triple effect heating fumigators 7 pipes are connected, the triple effect circulating pump 15 being connected by materail tube with triple effect separator 8; The port of export of described triple effect circulating pump 15 has two material pipelines, and a material pipeline is connected to the material inlet end of quadruple effect heating fumigators 9, and another material pipeline is connected to the entrance point of preheater 2.
The steam inlet of described triple effect heating fumigators 7 connects the steam (vapor) outlet of described two effect separators 6.
A described effect heating fumigators 3, two effect heating fumigators 5 and triple effect heating fumigators 7 are falling film heating evaporimeter.
Quadruple effect concentrating and separating device, comprise the quadruple effect heating fumigators 9 being connected with triple effect circulating pump 15, the quadruple effect separator 10 being connected with quadruple effect heating fumigators 9 pipes, the magma pump 16 being connected with quadruple effect separator 10 pipes, the material inlet end pipe of described quadruple effect heating fumigators 9 is connected with tubing pump 17, the entrance point pipe of described tubing pump 17 connects the port of export of described triple effect circulating pump 15 and the material outlet end of described quadruple effect separator 10, and the material outlet end pipe of described quadruple effect heating fumigators 9 connects the material inlet of described quadruple effect separator 10.
The steam inlet of described quadruple effect heating fumigators 9 connects the steam (vapor) outlet of described triple effect separator 8; Described quadruple effect heating fumigators 9 is for rising film heating fumigators.
Itaconic acid solution constantly pumps into described quadruple effect heating fumigators 9 by tubing pump 17, and make solution constantly between quadruple effect heating fumigators 9 and quadruple effect separator 10, carry out forced circulation, constantly concentrated educating under brilliant effect at quadruple effect separator 10, when solution reaches finite concentration (being solid-to-liquid ratio), magma mixture in described quadruple effect separator is discharged through magma pump 16, enter centrifugal separation process, carry out Separation of Solid and Liquid, realize continuous feeding and discharging.
The steam (vapor) outlet of described quadruple effect separator 10 connects the steam inlet of condenser 11, and the condensating water outlet tube of described condenser 11 is connected to pond 19.
The condensed water discharge outlet of described preheater 2 is connected to pond 19.
The condensed water discharge outlet pipe of described two effect heating fumigators 5 connects described triple effect heating fumigators 7, the condensed water discharge outlet pipe of described triple effect heating fumigators 7 connects described quadruple effect heating fumigators 9, the condensed water discharge outlet of described quadruple effect heating fumigators 9 connects condenser pump 18, and condenser pump 18 connects pond 19; Pond 19 is communicated with a chilled water tank 24, is provided with cooling water pump 20 above pond 19, and described cooling water pump 20 one end pipes are connected to the bottom in pond 19, and other end pipe is connected in the cavity of condenser 11, supplies with the required recirculated water of condenser 11 heat transfer process.
The steam (vapor) outlet of a described effect heating fumigators 3, two effect heating fumigators 5, triple effect heating fumigators 7 and quadruple effect heating fumigators 9 divides don't bother about the steam inlet that is connected described condenser 11; The steam outlet pipe of described condenser 11 connects water-ring vacuum pump 21.
Utilize said apparatus to implement the method for itaconic acid quadruple effect condensing crystallizing, comprise following consecutive steps:
Feed step: itaconic acid cleaner liquid is pumped from raw material storage tank 23 with feed pump 12;
Preheating step: the itaconic acid cleaner liquid that feed pump 12 is pumped into preheats with preheater 2; Described preheater 2 preferably rises film preheater.
One effect concentrating and separating step: the itaconic acid cleaner liquid of process preheating enters an effect heating fumigators 3 and heats, then itaconic acid solution is sent into an effect separator 4 and evaporated and educate crystalline substance, from an effect separator 4 itaconic acid solution out, by an effect circulating pump 13, pumped into next step.
The primary steam and one that the heating steam of described preheater 2 derives from outside to be provided is imitated the indirect steam that separator 4 produces; Indirect steam and the outside primary steam providing that an effect separator 4 produces is provided in the heating steam of a described effect heating fumigators 3.
Two effect concentrating and separating steps: the isolated itaconic acid solution of an effect separator 4 enters two effect heating fumigators 5 and carries out heating evaporation, then itaconic acid solution is sent into two effect separators 6 and evaporated and educate crystalline substance, from the isolated itaconic acid solution of two effect separators 6, by two effect circulating pumps 14, pumped into next step.
The heating steam of described two effect heating fumigators 5 derives from the indirect steam that an effect separator 4 produces.
Triple effect concentrating and separating step: the isolated itaconic acid solution of two effect separators 6 enters triple effect heating fumigators 7 and carries out heating evaporation, then itaconic acid solution being sent into triple effect separator 8 evaporates and educates crystalline substance, from the isolated solution part of triple effect separator 8, by triple effect circulating pump 15, sent into next step, remainder is sent back to an effect heating fumigators 3 and continues heating evaporation.
The heating steam of described triple effect heating fumigators 7 derives from the indirect steam that two effect separators 6 produce;
Quadruple effect concentrating and separating step: the isolated high concentration itaconic acid of triple effect separator 8 solution enters quadruple effect heating fumigators 9 and carries out heating evaporation, then itaconic acid solution being sent into quadruple effect separator 10 evaporates and educates crystalline substance, by constantly carry out circulating-heating evaporation in quadruple effect heating fumigators 9, in quadruple effect separator 10, constantly evaporate again educate crystalline substance (heat through evaporation repeatedly and educate crystalline substance) in quadruple effect heating fumigators 9 and quadruple effect separator 10 simultaneously, after solution reaches finite concentration (being solid-to-liquid ratio), with magma pump 16, this certain density solution is constantly taken out, enter centrifugal separation process and carry out Separation of Solid and Liquid, realize continuous feeding and discharging.
The heating steam of described quadruple effect heating fumigators 9 derives from the indirect steam that triple effect separator 8 produces;
A described effect heating fumigators 3, two effect heating fumigators 5 and triple effect heating fumigators 7 are falling film heating evaporimeter, and described quadruple effect heating fumigators 9 is for rising film heating fumigators.
The steam that described quadruple effect separator 10 produces is fed to condensation in condenser 11, and the condensed water of generation enters into pond 19 by deadweight;
The condensed water that described preheater 2 produces is drained in pond 19, it is standby that the condensed water producing in two effect concentration process, triple effect concentration process and quadruple effect concentration process is finally delivered to pond 19 by condenser pump 18, the steam that one effect heating fumigators 3, two effect heating fumigators 5, triple effect heating fumigators 7 and quadruple effect heating fumigators 9 produce is admitted to after cooling in condenser 11 and enters pond 19, incoagulable gas is taken away by vavuum pump, in quadruple effect separator 10, forms negative pressure.
The concentrated mode of described quadruple effect heating is downflow type, and ie in solution is identical with steam flow, all by an effect, sequentially flows to end effect.Material liquid, with being pumped into an effect, relies on the pressure reduction between each effect, automatically flows into next effect, and the liquid that completes of gained is extracted out with pump from end effect (operating under negative pressure).Because the pressure of a rear effect is low, so the boiling point of solution is also low, so solution is imitated meeting flash section moisture while entering a rear effect in the past, and the indirect steam producing is also more.Due to the concentration of aftereffect before effect high, operating temperature is low, so the heat transfer coefficient of the first effect is often high a lot of than end effect.
Rise film heating fumigators: be that material liquid enters from heating fumigators bottom, by indirect steam, driven,
Along pipe toward upper reaches.Falling film heating evaporimeter: be that material liquid enters from heating fumigators top, flow downward along tube wall with Action of Gravity Field.This film rising in film, falling liquid film refers to, and heating fumigators is along heating tube wall, to be the membranaceous of heat-transfer effect the best to flow in operating process Central Plains feed liquid.
Falling film evaporation is that feed liquid is added from falling film heating evaporator heating chamber upper tube box, through liquid distribution and film formation device, is evenly distributed in each heat exchanger tube, under gravity and vacuum induced and airflow function, becomes evenly membranaceous and flows from top to bottom.In flow process, by shell side heat medium heating vaporization, the steam of generation and liquid phase enter separator jointly, vapour-liquid is through fully separated, steam enters condenser condenses (single-action operation) or enters lower 1st effective evaporator as heat medium, realizes multiple-effect operation, and liquid phase is discharged by separator.
The principle of falling film evaporation technology is: need the material of evaporation to enter from falling film evaporator top by feed pump, walk in evaporation tube (tube side), material is distributed in heat exchanger tube with membranaceous by filming device, material when relying on gravitation to flow down tube chamber by the Steam Heating outside pipe, after reaching evaporating temperature, produce evaporation, material flows down the form evaporation with film together with indirect steam in managing.After indirect steam is compressed by vapour compression machine, send into falling film heating chamber shell side as heating steam.Falling film heating chamber shell side has plate, guiding indirect steam, condensation and discharge cannot condensation gas.And in this process, heat energy own is passed to from outward in pipe through tube wall, evaporation material wherein, after heat exchange, indirect steam is condensed into outside water discharge falling film evaporator.
The formation that rises film heating fumigators is that liquid enters heating tube heating according to the principle of siphon-pump, flow into separator after liquid separate with steam, by circulation pipe, flow back into evaporimeter, formation closed cycle, therefore, this evaporimeter claims again external circulation evaporator.
Heating tube is comprised of heat exchanger tube, material liquid reaches boiling point or approaches after boiling point through preheating, by heating clamber bottom, introduced, for the indirect steam rising at a high speed drives, along heat exchanger tube inwall, while flowing, evaporate, at heating clamber top, can reach required concentration, gained completes liquid and is discharged by separator bottom, and the indirect steam of generation becomes the thermal source of next effect or enters condenser condenses through being located at top separating plate group except debubblizing, after the globule, foreign material.
Principle and the falling film evaporation of climbing-film evaporation technique are basic identical, and the main distinction is that material liquid is to enter from the bottom of heating clamber, and feed liquid enters after heating tube, the boiling vaporization rapidly of being heated; Steam rises rapidly in pipe, and feed liquid be subject to rising the at a high speed drive of steam, forms membranaceous rising along tube wall, and continue to evaporate.The steam and the liquid phase that produce enter separator jointly, and vapour-liquid is through fully separated, and the steam of low-temperature level compresses through compressor, and temperature, pressure improve, and heat content increases, and then enters heat exchanger condensation, and to make full use of the latent heat of steam, liquid phase Ze You separation chamber discharges.
Utilize this device to complete a kind of specific works process of method of quadruple effect condensing crystallizing as follows:
First by the itaconic acid cleaner liquid in raw material storage tank 23 with feed pump 12 in flowmeter pumps into preheater 2, with indirect steam from an effect separator 4 and from outside primary steam heat exchange to 70 ℃, then heat exchange is carried out with primary steam and indirect steam from steam heat pump 1 in the top that enters into an effect heating fumigators 3, by after heating material to 100 ℃, enter an effect separator 4, under the negative pressure of-0.01MPa, carry out gas-liquid separation, isolated indirect steam enters steam heat pump 1 by jet chimney, preheater 2 and post bake evaporimeter 5, isolated material is squeezed into two effect heating fumigators 5 through an effect circulating pump 13, from the indirect steam of an effect separator 4 and the material that enters two effect heating fumigators 5, carry out entering two effect separators 6 after heat exchange to 90 ℃, under the negative pressure of-0.02MPa, carry out gas-liquid separation, isolated indirect steam enters triple effect heating fumigators 7 through jet chimney, and isolated material is squeezed into triple effect heating fumigators 7 through two effect circulating pumps 14, from the indirect steam of two effect separators 4 and the material that enters triple effect heating fumigators 7, carry out entering triple effect separator 8 after heat exchange to 80 ℃, under the negative pressure of-0.06MPa, carry out gas-liquid separation, isolated indirect steam enters quadruple effect heating fumigators 9 through jet chimney, isolated most material is squeezed into quadruple effect heating fumigators 9 by triple effect circulating pump 15 through a tubing pump 17, and remainder is squeezed into preheater 2 and is back to an effect heating fumigators 3 through triple effect circulating pump 15, from the indirect steam of triple effect separator 8 and the material that enters quadruple effect heating fumigators 9, carry out entering quadruple effect separator 10 after heat exchange to 70 ℃, the vacuum degree control of quadruple effect separator 10 is at-0.08MPa, and temperature is controlled at 70 ℃, the steam that quadruple effect separator 10 produces enters in condenser 11 and carries out becoming condensed water after heat exchange with recirculated water, the condensed water producing enters into pond 19 by deadweight, incoagulable gas is taken out with water-ring vacuum pump 21, can in condenser 11, separator (referring to an effect separator 4, two effect separators 6, triple effect separator 8 and quadruple effect separator 10) and heating fumigators (an effect heating fumigators 3, two effect heating fumigators 5, triple effect heating fumigators 7 and quadruple effect heating fumigators 9), form vacuum so simultaneously.
The material that enters quadruple effect separator 10 carries out after crystallization, through tubing pump 17, squeeze in quadruple effect heating fumigators 9, material relies on tubing pump in quadruple effect heating fumigators 9, to carry out forced circulation heating more than 17 time like this, in quadruple effect separator 10, constantly concentrate and educate crystalline substance simultaneously, when solution concentration reaches 75%, magma mixture in quadruple effect separator 10 is discharged and is entered into separation circuit by magma pump 16, carries out Separation of Solid and Liquid, thereby realizes the condensing crystallizing to itaconic acid solution.
In this technical process, the steam that one effect heating fumigators 3, two effect heating fumigators 5, triple effect heating fumigators 7 and quadruple effect heating fumigators 9 produce all enters in condenser 11 and carries out becoming condensed water after heat exchange with recirculated water, the condensed water producing enters into pond 19 by deadweight, and incoagulable gas is taken out with water-ring vacuum pump 21.
Claims (3)
1. the energy-saving quadruple effect concentration and crystallization device of itaconic acid, is characterized in that, comprising:
Feed arrangement, comprises that entrance point is connected to the feed pump of raw material storage tank;
Preheating device, comprises that entrance point is connected to the preheater of the described feed pump port of export;
One effect concentrating and separating device, comprises the effect heating fumigators being connected with the port of export of described preheater, the effect separator being connected with an effect heating evaporation organ pipe, the effect circulating pump being connected with an effect separator;
Two effect concentrating and separating devices, comprise the two effect heating fumigators that are connected with the port of export of a described effect circulating pump, the two effect separators that are connected with two effect heating evaporation organ pipes, the two effect circulating pumps that are connected with two effect separators;
Triple effect concentrating and separating device, comprises the triple effect heating fumigators being connected with the port of export of described two effect circulating pumps, the triple effect separator being connected with triple effect heating evaporation organ pipe, the triple effect circulating pump being connected with triple effect separator; The port of export of described triple effect circulating pump has two material pipelines, and a material pipeline is connected to the material inlet end of quadruple effect heating fumigators, and another material pipeline is connected to the entrance point of preheater;
Quadruple effect concentrating and separating device, comprise the quadruple effect heating fumigators being connected with triple effect circulating pump, the quadruple effect separator being connected with quadruple effect heating evaporation organ pipe, the magma pump being connected with quadruple effect separator tube, the material inlet end pipe of described quadruple effect heating fumigators is connected with tubing pump, the entrance point pipe of described tubing pump connects the port of export of described triple effect circulating pump and the material outlet end of described quadruple effect separator, and the material outlet end pipe of described quadruple effect heating fumigators connects the material inlet of described quadruple effect separator.
2. the energy-saving quadruple effect concentration and crystallization device of itaconic acid according to claim 1, it is characterized in that: the preheater in described device is for rising film preheater, one effect heating fumigators, two effect heating fumigators and triple effect heating fumigators are falling film heating evaporimeter, and quadruple effect heating fumigators is for rising film heating fumigators.
3. device according to claim 1 and 2, is characterized in that: in described device,
The steam inlet tube of described preheater connects the steam (vapor) outlet of outside vapour source and an effect separator;
The steam inlet tube of a described effect heating fumigators connects a steam heat delivery side of pump, and the inlet tube of this steam heat pump connects the steam (vapor) outlet of a vapor can and a described effect separator;
The steam inlet of described two effect heating fumigators connects the steam (vapor) outlet of an effect separator;
The steam inlet of described triple effect heating fumigators connects the steam (vapor) outlet of two effect separators;
The steam inlet of described quadruple effect heating fumigators connects the steam (vapor) outlet of triple effect separator;
The steam (vapor) outlet of described quadruple effect separator connects the steam inlet of condenser, and the condensating water outlet tube of described condenser is connected to pond;
The condensed water discharge outlet of described preheater is connected to pond;
The condensed water discharge outlet pipe of described two effect heating fumigators connects described triple effect heating fumigators, the condensed water discharge outlet pipe of described triple effect heating fumigators connects described quadruple effect heating fumigators, the condensed water discharge outlet of described quadruple effect heating fumigators connects condenser pump, and condenser pump connects pond;
The steam (vapor) outlet of a described effect heating fumigators, two effect heating fumigators, triple effect heating fumigators and quadruple effect heating fumigators divides don't bother about the steam inlet that is connected described condenser;
The steam outlet pipe of described condenser connects water-ring vacuum pump.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320636320.7U CN203540090U (en) | 2013-10-15 | 2013-10-15 | Itaconic acid energy-saving-type four-effect concentrating and crystallizing device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201320636320.7U CN203540090U (en) | 2013-10-15 | 2013-10-15 | Itaconic acid energy-saving-type four-effect concentrating and crystallizing device |
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| CN203540090U true CN203540090U (en) | 2014-04-16 |
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| CN201320636320.7U Withdrawn - After Issue CN203540090U (en) | 2013-10-15 | 2013-10-15 | Itaconic acid energy-saving-type four-effect concentrating and crystallizing device |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104922922A (en) * | 2015-06-19 | 2015-09-23 | 天津长芦海晶集团有限公司 | Four-effect evaporating device and evaporating method for medicinal sodium chloride |
| CN106086091A (en) * | 2016-06-17 | 2016-11-09 | 青岛琅琊台集团股份有限公司 | A kind of itaconic acid concentrates the condensed water method for itaconic acid fermentation |
| CN107149784A (en) * | 2017-06-02 | 2017-09-12 | 肥城金塔机械科技有限公司 | Method of evaporating, device and its application for heat sensitive material |
| CN107854857A (en) * | 2017-12-24 | 2018-03-30 | 无锡诚尔鑫环保装备科技有限公司 | A kind of multi-way concentration purifying plant and its application method |
| CN113476874A (en) * | 2021-07-29 | 2021-10-08 | 上海神农节能环保科技股份有限公司 | Multiple-effect evaporation crystallizer suitable for viscose fiber acid bath concentration crystallization |
-
2013
- 2013-10-15 CN CN201320636320.7U patent/CN203540090U/en not_active Withdrawn - After Issue
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104922922A (en) * | 2015-06-19 | 2015-09-23 | 天津长芦海晶集团有限公司 | Four-effect evaporating device and evaporating method for medicinal sodium chloride |
| CN106086091A (en) * | 2016-06-17 | 2016-11-09 | 青岛琅琊台集团股份有限公司 | A kind of itaconic acid concentrates the condensed water method for itaconic acid fermentation |
| CN107149784A (en) * | 2017-06-02 | 2017-09-12 | 肥城金塔机械科技有限公司 | Method of evaporating, device and its application for heat sensitive material |
| CN107149784B (en) * | 2017-06-02 | 2022-11-22 | 肥城金塔机械科技有限公司 | Evaporation method and device for heat-sensitive material and application thereof |
| CN107854857A (en) * | 2017-12-24 | 2018-03-30 | 无锡诚尔鑫环保装备科技有限公司 | A kind of multi-way concentration purifying plant and its application method |
| CN113476874A (en) * | 2021-07-29 | 2021-10-08 | 上海神农节能环保科技股份有限公司 | Multiple-effect evaporation crystallizer suitable for viscose fiber acid bath concentration crystallization |
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