CN103157292A - Clean dewatering device for toluenediamine - Google Patents
Clean dewatering device for toluenediamine Download PDFInfo
- Publication number
- CN103157292A CN103157292A CN2013101140033A CN201310114003A CN103157292A CN 103157292 A CN103157292 A CN 103157292A CN 2013101140033 A CN2013101140033 A CN 2013101140033A CN 201310114003 A CN201310114003 A CN 201310114003A CN 103157292 A CN103157292 A CN 103157292A
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- filler
- extraction mouth
- liquid
- tower body
- tower
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- VOZKAJLKRJDJLL-UHFFFAOYSA-N 2,4-diaminotoluene Chemical compound CC1=CC=C(N)C=C1N VOZKAJLKRJDJLL-UHFFFAOYSA-N 0.000 title claims abstract description 51
- 239000000945 filler Substances 0.000 claims abstract description 88
- 239000007788 liquid Substances 0.000 claims abstract description 58
- 239000012071 phase Substances 0.000 claims abstract description 20
- 239000007791 liquid phase Substances 0.000 claims abstract description 13
- 238000003825 pressing Methods 0.000 claims abstract description 11
- 239000000463 material Substances 0.000 claims abstract description 9
- 238000000605 extraction Methods 0.000 claims description 77
- 230000018044 dehydration Effects 0.000 claims description 38
- 238000006297 dehydration reaction Methods 0.000 claims description 38
- -1 cresylic acid diamines Chemical class 0.000 claims description 26
- 230000004087 circulation Effects 0.000 claims description 22
- 239000002351 wastewater Substances 0.000 claims description 19
- 239000007789 gas Substances 0.000 claims description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 14
- 238000009826 distribution Methods 0.000 claims description 12
- 238000000926 separation method Methods 0.000 claims description 12
- 239000012535 impurity Substances 0.000 claims description 10
- 238000010992 reflux Methods 0.000 claims description 10
- 238000012856 packing Methods 0.000 claims description 9
- 239000000203 mixture Substances 0.000 claims description 8
- 239000007792 gaseous phase Substances 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 6
- 239000003795 chemical substances by application Substances 0.000 claims description 4
- 238000004140 cleaning Methods 0.000 claims description 4
- 239000012141 concentrate Substances 0.000 claims description 3
- 238000009833 condensation Methods 0.000 claims description 3
- 230000005494 condensation Effects 0.000 claims description 3
- 230000006837 decompression Effects 0.000 claims description 3
- 239000011541 reaction mixture Substances 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 238000005192 partition Methods 0.000 abstract description 2
- 238000011084 recovery Methods 0.000 abstract 4
- 238000003889 chemical engineering Methods 0.000 abstract 1
- 125000004122 cyclic group Chemical group 0.000 abstract 1
- 238000011027 product recovery Methods 0.000 abstract 1
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 239000000376 reactant Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 238000009835 boiling Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 150000004992 toluidines Chemical class 0.000 description 2
- 238000004065 wastewater treatment Methods 0.000 description 2
- DYSXLQBUUOPLBB-UHFFFAOYSA-N 2,3-dinitrotoluene Chemical compound CC1=CC=CC([N+]([O-])=O)=C1[N+]([O-])=O DYSXLQBUUOPLBB-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000004069 differentiation Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 125000004836 hexamethylene group Chemical group [H]C([H])([*:2])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[*:1] 0.000 description 1
- 238000005984 hydrogenation reaction Methods 0.000 description 1
- 239000012948 isocyanate Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- UAEPNZWRGJTJPN-UHFFFAOYSA-N methylcyclohexane Chemical class CC1CCCCC1 UAEPNZWRGJTJPN-UHFFFAOYSA-N 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D3/00—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
- B01D3/008—Liquid distribution
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C209/00—Preparation of compounds containing amino groups bound to a carbon skeleton
- C07C209/82—Purification; Separation; Stabilisation; Use of additives
- C07C209/86—Separation
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
- Gas Separation By Absorption (AREA)
Abstract
The invention belongs to the technical field of chemical engineering dewatering equipment and relates to a clean dewatering device for toluenediamine. According to the device, a tower top condenser is arranged on the top of a dewatering tower body and is fixedly connected with a tower top gas phase outlet in the upper part of the dewatering tower body, and a gas phase recovery port and a liquid phase recovery port are fixedly formed in the upper and lower sides of the tower top condenser respectively; fillers of four sections are arranged in the dewatering tower body, a supporting plate and a filler pressing ring are fixedly arranged at the bottom and top of the filler of each section respectively, and a liquid distributor, a depressurizing pipe, a liquid collecting tray and a liquid collecting sump are arranged at the upper end of the filler pressing ring; a side recovery port is formed in the upper part of the filler of a second section, a crude toluenediamine charging port is formed in the upper part of the filler of a fourth section, and a liquid collecting device and a downcomer are sequentially arranged at the lower part of the supporting plate of the filler of the fourth section; and a reboiler inlet, a partition plate, a product recovery port and a cyclic recovery port are arranged at the tower bottom of the dewatering tower body. The clean dewatering device for toluenediamine has the advantages of simple structure, reliable principle, low production cost, high material utilization ratio, high mass transfer efficiency and environment friendliness.
Description
Technical field:
The invention belongs to chemical industry dehydration equipment technical field, relate to a kind of equipment that removes water from the toluenediamine mixture, particularly a kind of toluenediamine cleaning dewater unit.
Background technology:
Toluenediamine (TDA) is the primary raw material of producing toluene di-isocyanate(TDI) (TDI), usually the production of TDA adopts hydrogenation of dinitro toluene to make, except containing purpose product TDA, also contain ortho position toluenediamine, water, high-boiling-point impurity tar and low boiling impurity toluidines and hexamethylene compounds in reactant mixture; Water has a great impact the process that the TDA phosgenation generates TDI, must remove in actual production totally, and in reactant mixture, water all will separate in dehydrating tower with low boiling impurity toluidines and methyl cyclohexane compounds simultaneously.Existing TDA dehydration equipment and technology are not all processed the low-boiling-point substance in reactant mixture, a kind of TDA dehydrating tower is disclosed as Chinese patent (patent No. ZL200920017505.3), in its technical scheme due to low-boiling-point substance and water in the lump from removed overhead, and it is not separated, can cause like this in waste water organic impurity content too high, show as COD value of waste water in production higher, follow-up wastewater treatment has been increased difficulty; At the bottom of tower, TDA only has an extraction mouth simultaneously, lack the differentiation of reboiler circulation extraction mouth and products export, because the reboiler outlet material will be violated the transmission of infiltrating capable matter heat with the material of upper level, reduce the efficient of heat and mass, cause in product water content than high in reboiler outlet material, increase the load of follow-up TDA rectification under vacuum system; So the toluenediamine dewater unit of seeking to design a kind of clean type is very with practical value.
Summary of the invention:
The object of the invention is to overcome the shortcoming that prior art exists, seeking to design provides a kind of cleaning dewater unit that removes water from the toluenediamine mixture, improve the defective that existing toluenediamine (TDA) dewater unit exists, the strengthen dewatering effect, realization reduces the purpose of COD in waste water.
to achieve these goals, agent structure of the present invention comprises dehydration tower body, overhead condenser, top gaseous phase outlet, side line extraction mouth, crude cresylic acid diamines charging aperture, circulation extraction mouth, product extraction mouth, reboiler entrance, liquid collector, downspout, liquid distribution trough, filler, demarcation strip, gas phase extraction mouth, liquid phase extraction mouth, filler pressing, gripper shoe, demarcation strip opening, collecting tank, catch tray and flange, the top of dehydration tower body cylindraceous is shaped with the overhead condenser of the formula structure of hanging one's head, overhead condenser is fixedly connected with the top gaseous phase outlet on dehydration tower body top by flange, and overhead condenser upside and downside fixedly are shaped with respectively gas phase extraction mouth and liquid phase extraction mouth, be spaced up and down in the inner chamber of dehydration tower body and be respectively arranged with four sections fillers, the bottom of every section filler isostructure respectively fixedly is shaped with the gripper shoe that supports filler, the top of every section filler fixedly is shaped with respectively the fixedly filler pressing of filler, the filler pressing upper end is shaped with liquid distribution trough, decompression tube, catch tray and collecting tank from bottom to top successively, and catch tray and collecting tank constitute liquid collector, top-down first, second and third section filler adopts respectively the High Efficient Standard Packing of corrugated board structures or screen net structure as the rectifying section filler, and uppermost first paragraph filler is used for tower top infinite reflux, the light component impurity in enrichment waste water, second and third section filler is divided into two sections with filler, improves the separative efficiency of filler, and water is effectively separated with toluenediamine, place parallel with catch tray, top-down second segment filler top is shaped with side line extraction mouth, the most of waste water of side line extraction mouth extraction, and residue waste water refluxes as phegma, top-down the 4th section filler adopts anti-stifled grid packing as the stripping section filler, with the dehydration of crude cresylic acid diamines and concentrate, place parallel with catch tray, top-down the 4th section filler top is shaped with crude cresylic acid diamines charging aperture, and the crude cresylic acid diamines enters in the dehydration tower body by crude cresylic acid diamines charging aperture, the bottom that is used for the gripper shoe of the 4th section filler of support is shaped with liquid collector and downspout successively, and crude cresylic acid diamines (TDA) enters the 4th section liquid after the filler separation at the bottom of flowing into tower by downspout after the liquid collector collection, be shaped with the reboiler entrance at the bottom of the tower of dehydration tower body, demarcation strip, product extraction mouth and circulation extraction mouth, product extraction mouth and circulation extraction mouth fixedly are formed on respectively the both sides of the demarcation strip of dehydration tower body bottom side end, the demarcation strip bottom is shaped with square demarcation strip opening, the reboiler entrance fixedly is formed on the upper lateral part of close product extraction mouth on the bottom side of dehydration tower body, after toluenediamine at the bottom of tower enters after heating and carries out gas-liquid separation in the dehydrating tower body, the low toluenediamine (TDA) of part water content enters product extraction mouth as extraction, after mixing with the liquid of backflow, the circulation extraction mouth that another part enters the demarcation strip opposite side enters circulation from the reboiler entrance.
the present invention with reaction mixture crude cresylic acid diamines (TDA) through crude cresylic acid diamines charging aperture enter the dehydration tower body in, mix by downspout with liquid under top-down the 3rd section filler stream and enter liquid distribution trough, tower spirit phase is carried out gas-liquid separation and exchange heat with thick TDA at top-down the 4th section filler, the liquid collector of liquid below the 4th section filler collected by downspout and flowed into circulation extraction mouth, toluenediamine at the bottom of tower (TDA) is entered in the dehydration tower body by the circulation of reboiler entrance after heating, toluenediamine (TDA) is in the dehydration tower body after gas-liquid separation, liquid phase enters product extraction mouth, gas phase upwards enters respectively each packing layer successively, square demarcation strip opening bottom demarcation strip at the bottom of tower is put materials at bottom of tower only, most of gas phase that overhead condenser comes up at the bottom of with tower is at overhead condensation, uncooled gas is discharged by gas phase extraction mouth, a small amount of organic impurities of enrichment is by the extraction of liquid phase extraction mouth, a large amount of condensate liquids flow into tower top first paragraph filler by downspout and liquid distribution trough after the liquid collector of tower top is collected, a large amount of waste water are by the extraction of side line extraction mouth after the first paragraph filler, part waste water as reflux stream to next section filler.
The present invention compared with prior art, it is simple in structure, principle is reliable, production cost is low, COD value of waste water is low, the subsequent wastewater treatment difficulty is little, utilization of materials is high, mass-transfer efficiency is high, can effectively reduce the water content in outlet material TDA, environmental friendliness.
Description of drawings:
Fig. 1 is agent structure principle schematic of the present invention.
Fig. 2 is the partition plate structure principle schematic that the present invention relates to.
The specific embodiment:
Also the invention will be further described by reference to the accompanying drawings below by embodiment.
Embodiment:
the agent structure of the present embodiment comprises dehydration tower body 1, overhead condenser 2, top gaseous phase outlet 3, side line extraction mouth 4, crude cresylic acid diamines charging aperture 5, circulation extraction mouth 6, product extraction mouth 7, reboiler entrance 8, liquid collector 9, downspout 10, liquid distribution trough 11, filler 12, demarcation strip 13, gas phase extraction mouth 14, liquid phase extraction mouth 15, filler pressing 16, gripper shoe 17, demarcation strip opening 18, collecting tank 19, catch tray 20 and flange 21, the top of dehydration tower body 1 cylindraceous is shaped with the overhead condenser 2 of the formula structure of hanging one's head, overhead condenser 2 is fixedly connected with the top gaseous phase outlet 3 on dehydration tower body 1 top by flange 21, and overhead condenser 2 upsides and downside fixedly are shaped with respectively gas phase extraction mouth 14 and liquid phase extraction mouth 15, be spaced up and down in the inner chamber of dehydration tower body 1 and be respectively arranged with four sections fillers 12, the bottom of every section filler 12 isostructure respectively fixedly is shaped with the gripper shoe 17 that supports filler, the top of every section filler 12 fixedly is shaped with respectively the fixedly filler pressing 16 of filler, filler pressing 16 upper ends are shaped with liquid distribution trough 11, decompression tube 10, catch tray 20 and collecting tank 19 from bottom to top successively, and catch tray 20 and collecting tank 19 constitute liquid collector 9, top-down first, second and third section filler 12 adopts respectively the High Efficient Standard Packing of corrugated board structures or screen net structure as the rectifying section filler, and uppermost first paragraph filler 12 is used for tower top infinite reflux, the light component impurity in enrichment waste water, second and third section filler 12 is divided into two sections with filler, improves the separative efficiency of filler, and water is effectively separated with toluenediamine, top-down second segment filler 12 tops are shaped with side line extraction mouth 4 with catch tray 20 parallel place, the most of waste water of side line extraction mouth 4 extraction, and residue waste water refluxes as phegma, top-down the 4th section filler 12 adopts anti-stifled grid packing as the stripping section filler, with the dehydration of crude cresylic acid diamines and concentrate, top-down the 4th section filler top is shaped with crude cresylic acid diamines charging aperture 5 with catch tray 20 parallel place, and the crude cresylic acid diamines enters in dehydration tower body 1 by crude cresylic acid diamines charging aperture 5, the bottom that is used for the gripper shoe 17 of the 4th section filler 12 of support is shaped with liquid collector 9 and downspout 10 successively, and crude cresylic acid diamines (TDA) enters the 4th section liquid after the filler separation at the bottom of flowing into tower by downspout 9 after liquid collector 10 collections, be shaped with reboiler entrance 8 at the bottom of the tower of dehydration tower body 1, demarcation strip 13, product extraction mouth 7 and circulation extraction mouth 6, product extraction mouth 7 and circulation extraction mouth 6 fixedly are formed on respectively the both sides of the demarcation strip 13 of dehydration tower body 1 bottom side end, demarcation strip 13 bottoms are shaped with square demarcation strip opening 18, reboiler entrance 8 fixedly is formed on the upper lateral part of close product extraction mouth 7 on the bottom side of dehydration tower body 1, after toluenediamine at the bottom of tower enters after heating and carries out gas-liquid separation in dehydrating tower body 1, the low toluenediamine (TDA) of part water content enters product extraction mouth 7 as extraction, the circulation extraction mouth 6 that another part enters demarcation strip 13 opposite sides mixes afterwards with the liquid that refluxes and enters circulation from reboiler entrance 8.
the present embodiment with reaction mixture crude cresylic acid diamines (TDA) through crude cresylic acid diamines charging aperture 5 enter the dehydration tower body 1 in, mix by downspout 10 with top-down the 3rd section liquid that filler 12 flows down and enter liquid distribution trough 11, tower spirit phase is carried out gas-liquid separation and exchange heat with thick TDA at top-down the 4th section filler 12, the liquid collector 9 of liquid below the 4th section filler collected by downspout 10 and flowed into circulation extraction mouths 6, toluenediamine at the bottom of tower (TDA) is entered in dehydration tower body 1 by 8 circulations of reboiler entrance after heating, toluenediamine (TDA) is after the interior gas-liquid separation of dehydration tower body 1, liquid phase enters product extraction mouth 7, gas phase upwards enters respectively each packing layer successively, the square demarcation strip opening 18 of demarcation strip 13 bottoms at the bottom of tower is put materials at bottom of tower only, overhead condenser 2 with most of gas phase of coming up at the bottom of tower at overhead condensation, uncooled gas is discharged by gas phase extraction mouth 14, a small amount of organic impurities of enrichment is by 15 extraction of liquid phase extraction mouth, a large amount of condensate liquids flow into tower top first paragraph filler 12 by downspout 10 and liquid distribution trough 11 after the liquid collector 9 of tower top is collected, a large amount of waste water are by 4 extraction of side line extraction mouth after first paragraph filler 12, part waste water as reflux stream to next section filler.
Claims (2)
1. a toluenediamine cleaning dewater unit, is characterized in that agent structure comprises dehydration tower body, overhead condenser, top gaseous phase outlet, side line extraction mouth, crude cresylic acid diamines charging aperture, circulation extraction mouth, product extraction mouth, reboiler entrance, liquid collector, downspout, liquid distribution trough, filler, demarcation strip, gas phase extraction mouth, liquid phase extraction mouth, filler pressing, gripper shoe, demarcation strip opening, collecting tank, catch tray and flange, the top of dehydration tower body cylindraceous is shaped with the overhead condenser of the formula structure of hanging one's head, overhead condenser is fixedly connected with the top gaseous phase outlet on dehydration tower body top by flange, and overhead condenser upside and downside fixedly are shaped with respectively gas phase extraction mouth and liquid phase extraction mouth, be spaced up and down in the inner chamber of dehydration tower body and be respectively arranged with four sections fillers, the bottom of every section filler isostructure respectively fixedly is shaped with the gripper shoe that supports filler, the top of every section filler fixedly is shaped with respectively the fixedly filler pressing of filler, the filler pressing upper end is shaped with liquid distribution trough, decompression tube, catch tray and collecting tank from bottom to top successively, and catch tray and collecting tank constitute liquid collector, top-down first, second and third section filler adopts respectively the High Efficient Standard Packing of corrugated board structures or screen net structure as the rectifying section filler, and uppermost first paragraph filler is used for tower top infinite reflux, the light component impurity in enrichment waste water, second and third section filler is divided into two sections with filler, improves the separative efficiency of filler, and water is effectively separated with toluenediamine, place parallel with catch tray, top-down second segment filler top is shaped with side line extraction mouth, the most of waste water of side line extraction mouth extraction, and residue waste water refluxes as phegma, top-down the 4th section filler adopts anti-stifled grid packing as the stripping section filler, with the dehydration of crude cresylic acid diamines and concentrate, place parallel with catch tray, top-down the 4th section filler top is shaped with crude cresylic acid diamines charging aperture, and the crude cresylic acid diamines enters in the dehydration tower body by crude cresylic acid diamines charging aperture, the bottom that is used for the gripper shoe of the 4th section filler of support is shaped with liquid collector and downspout successively, and the crude cresylic acid diamines enters the 4th section liquid after the filler separation at the bottom of flowing into tower by downspout after the liquid collector collection, be shaped with the reboiler entrance at the bottom of the tower of dehydration tower body, demarcation strip, product extraction mouth and circulation extraction mouth, product extraction mouth and circulation extraction mouth fixedly are formed on respectively the both sides of the demarcation strip of dehydration tower body bottom side end, the demarcation strip bottom is shaped with square demarcation strip opening, the reboiler entrance fixedly is formed on the upper lateral part of close product extraction mouth on the bottom side of dehydration tower body, after toluenediamine at the bottom of tower enters after heating and carries out gas-liquid separation in the dehydrating tower body, the low toluenediamine of part water content enters product extraction mouth as extraction, after mixing with the liquid of backflow, the circulation extraction mouth that another part enters the demarcation strip opposite side enters circulation from the reboiler entrance.
2. toluenediamine according to claim 1 cleans dewater unit, it is characterized in that reaction mixture crude cresylic acid diamines in crude cresylic acid diamines charging aperture enters the dehydration tower body, mix by downspout with liquid under top-down the 3rd section filler stream and enter liquid distribution trough, tower spirit phase is carried out gas-liquid separation and exchange heat with thick TDA at top-down the 4th section filler, the liquid collector of liquid below the 4th section filler collected by downspout and flowed into circulation extraction mouth, toluenediamine at the bottom of tower is entered in the dehydration tower body by the circulation of reboiler entrance after heating, toluenediamine is in the dehydration tower body after gas-liquid separation, liquid phase enters product extraction mouth, gas phase upwards enters respectively each packing layer successively, square demarcation strip opening bottom demarcation strip at the bottom of tower is put materials at bottom of tower only, most of gas phase that overhead condenser comes up at the bottom of with tower is at overhead condensation, uncooled gas is discharged by gas phase extraction mouth, a small amount of organic impurities of enrichment is by the extraction of liquid phase extraction mouth, a large amount of condensate liquids flow into tower top first paragraph filler by downspout and liquid distribution trough after the liquid collector of tower top is collected, a large amount of waste water are by the extraction of side line extraction mouth after the first paragraph filler, part waste water as reflux stream to next section filler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101140033A CN103157292A (en) | 2013-04-03 | 2013-04-03 | Clean dewatering device for toluenediamine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101140033A CN103157292A (en) | 2013-04-03 | 2013-04-03 | Clean dewatering device for toluenediamine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103157292A true CN103157292A (en) | 2013-06-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013101140033A Pending CN103157292A (en) | 2013-04-03 | 2013-04-03 | Clean dewatering device for toluenediamine |
Country Status (1)
| Country | Link |
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| CN (1) | CN103157292A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107023526A (en) * | 2016-01-29 | 2017-08-08 | 北京水创新能科技有限责任公司 | It is a kind of to have pressure gas collector provided with interlayer |
| CN110452125A (en) * | 2019-09-03 | 2019-11-15 | 天津科技大学 | A kind of toluenediamine dewatering and device based on mechanical steam recompression MVR |
| CN111473916A (en) * | 2020-04-10 | 2020-07-31 | 中国石油化工股份有限公司 | Monitoring method for crystallizer corrosion leakage condition |
| CN111803988A (en) * | 2020-07-31 | 2020-10-23 | 宁波巨化化工科技有限公司 | Trichloroethylene separator |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57209602A (en) * | 1981-06-22 | 1982-12-23 | Hidemasa Tsuruta | Vapor re-compression type distillation |
| EP0948382B1 (en) * | 1996-10-30 | 2003-08-20 | Koch-Glitsch, LP | Downcomer for chemical process tower |
| CN1489562A (en) * | 2000-12-15 | 2004-04-14 | Process for separating mixtures of materials haivng different boiling points | |
| CN101444677A (en) * | 2009-01-06 | 2009-06-03 | 烟台巨力异氰酸酯有限公司 | TDA dehydrating tower |
| CN201658857U (en) * | 2010-04-13 | 2010-12-01 | 山西翔宇化工有限公司 | Rectifying tower for continuous rectification |
-
2013
- 2013-04-03 CN CN2013101140033A patent/CN103157292A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57209602A (en) * | 1981-06-22 | 1982-12-23 | Hidemasa Tsuruta | Vapor re-compression type distillation |
| EP0948382B1 (en) * | 1996-10-30 | 2003-08-20 | Koch-Glitsch, LP | Downcomer for chemical process tower |
| CN1489562A (en) * | 2000-12-15 | 2004-04-14 | Process for separating mixtures of materials haivng different boiling points | |
| CN101444677A (en) * | 2009-01-06 | 2009-06-03 | 烟台巨力异氰酸酯有限公司 | TDA dehydrating tower |
| CN201658857U (en) * | 2010-04-13 | 2010-12-01 | 山西翔宇化工有限公司 | Rectifying tower for continuous rectification |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107023526A (en) * | 2016-01-29 | 2017-08-08 | 北京水创新能科技有限责任公司 | It is a kind of to have pressure gas collector provided with interlayer |
| CN110452125A (en) * | 2019-09-03 | 2019-11-15 | 天津科技大学 | A kind of toluenediamine dewatering and device based on mechanical steam recompression MVR |
| CN111473916A (en) * | 2020-04-10 | 2020-07-31 | 中国石油化工股份有限公司 | Monitoring method for crystallizer corrosion leakage condition |
| CN111803988A (en) * | 2020-07-31 | 2020-10-23 | 宁波巨化化工科技有限公司 | Trichloroethylene separator |
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Application publication date: 20130619 |