CN109400439A - A kind of cooling liquid recyclable device of methylene chloride - Google Patents
A kind of cooling liquid recyclable device of methylene chloride Download PDFInfo
- Publication number
- CN109400439A CN109400439A CN201811246994.XA CN201811246994A CN109400439A CN 109400439 A CN109400439 A CN 109400439A CN 201811246994 A CN201811246994 A CN 201811246994A CN 109400439 A CN109400439 A CN 109400439A
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- CN
- China
- Prior art keywords
- methylene chloride
- tower
- absorption tower
- liquid
- absorb
- 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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- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 title claims abstract description 230
- 239000000110 cooling liquid Substances 0.000 title claims abstract description 28
- 238000010521 absorption reaction Methods 0.000 claims abstract description 36
- 239000007788 liquid Substances 0.000 claims abstract description 26
- 239000000945 filler Substances 0.000 claims description 3
- 238000010025 steaming Methods 0.000 claims 1
- 238000005265 energy consumption Methods 0.000 abstract description 4
- 238000001816 cooling Methods 0.000 abstract description 3
- 239000012535 impurity Substances 0.000 description 6
- 238000011084 recovery Methods 0.000 description 4
- WBZFUFAFFUEMEI-UHFFFAOYSA-M Acesulfame k Chemical compound [K+].CC1=CC(=O)[N-]S(=O)(=O)O1 WBZFUFAFFUEMEI-UHFFFAOYSA-M 0.000 description 3
- 229960004998 acesulfame potassium Drugs 0.000 description 3
- 235000010358 acesulfame potassium Nutrition 0.000 description 3
- 239000000619 acesulfame-K Substances 0.000 description 3
- 238000004064 recycling Methods 0.000 description 3
- NEHMKBQYUWJMIP-UHFFFAOYSA-N chloromethane Chemical class ClC NEHMKBQYUWJMIP-UHFFFAOYSA-N 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000005202 decontamination Methods 0.000 description 1
- 230000003588 decontaminative effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- -1 dichloromethane Alkane Chemical class 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 238000005554 pickling Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-N sulfuric acid Substances OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 1
- 230000002194 synthesizing effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C17/00—Preparation of halogenated hydrocarbons
- C07C17/38—Separation; Purification; Stabilisation; Use of additives
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
The invention discloses a kind of cooling liquid recyclable devices of methylene chloride, it include: the jet chimney for conveying methylene chloride steam, jet chimney is connected with the gas access of absorption tower lower part, gas vent at the top of absorption tower is connected with the gas access of condenser, the gas vent of condenser is connected with vacuum pump, the liquid outlet of condenser is connected with temporary storage tank, absorb the bottom of the tower by be set on the outside of absorption tower with pump and cooler pipeline and absorption tower at the top of be connected, the overflow port of absorb the bottom of the tower is connected with finished product receiving slit, and the barometric pipe that can enable the methylene chloride overflow of absorb the bottom of the tower into finished product receiving slit is provided in the pipeline between the overflow port and finished product receiving slit of absorb the bottom of the tower.Above-mentioned cooling liquid recyclable device is using cooling methylene chloride liquid come cooling liquid methylene chloride steam, so that cooling liquid efficiency is very high, energy consumption is very low.
Description
Technical field
The present invention relates to methylene chloride reclaimer fields, and in particular to a kind of cooling liquid recycling dress of methylene chloride
It sets.
Background technique
Methylene chloride is organic solvent important during synthesizing acesulfame potassium, and acesulfame potassium can leave impure after having synthesized
Dichloromethane solution, need could be in the life for acesulfame potassium after decontamination recycles for methylene chloride in dichloromethane solution
It produces, the impurity in dichloromethane solution generally includes organic impurities, inorganic impurity and moisture.Typically now using in rectifying column
To dichloromethane solution, rectifying removal impurity recycles methylene chloride repeatedly, but uses rectifying column recycling methylene chloride there are energy
Consume the disadvantage high, complicated for operation, recovery efficiency is low.
To solve the above-mentioned problems, applicant now invented a kind of recovery process of new methylene chloride, recovery process
Are as follows: dichloromethane solution is heated first so that dichloromethane solution explosive evaporation, by evaporation can by methylene chloride with
Organic impurities and inorganic impurity separation, then carry out pickling water removal to methylene chloride steam by the concentrated sulfuric acid, then to dichloromethane
Alkane steam carries out cooling liquid, can thus recycle methylene chloride.Typically now using heat exchanger come to methylene chloride steam into
Row cooling liquid, but the energy consumption of heat exchanger is higher, and cooling liquid is inefficient.
Summary of the invention
The technical problems to be solved by the present invention are: a kind of methylene chloride that low energy consumption, cooling liquid is high-efficient will be provided
Cooling liquid recyclable device.
To solve the above-mentioned problems, the technical scheme adopted by the invention is as follows: a kind of cooling liquid recycling of methylene chloride
Device, it is characterised in that: include: the jet chimney for conveying methylene chloride steam, the gas of jet chimney and absorption tower lower part
Body entrance is connected, and the gas vent at the top of absorption tower is connected with the gas access of condenser, the gas vent of condenser with
Vacuum pump is connected, and the liquid outlet of condenser is connected with temporary storage tank, can aspirate methylene chloride steam after vacuum pump suction
To into absorption tower, so that methylene chloride steam mixes upwards with the methylene chloride liquid to flow downward to carry out cooling liquid,
Methylene chloride after liquefaction can converge into downwards absorb the bottom of the tower with original methylene chloride liquid, not liquefied methylene chloride
Steam can be sucked up in condenser and be condensed and be stored in temporary storage tank, and absorb the bottom of the tower is by being set on the outside of absorption tower
With pump and cooler pipeline and absorption tower at the top of be connected, pump the methylene chloride liquid of absorb the bottom of the tower can be delivered to
At the top of absorption tower, so that methylene chloride liquid be made to flow from top to bottom in absorption tower, cooler can to methylene chloride liquid into
Row cooling, enables methylene chloride steam by methylene chloride liquid cooling liquid, and the overflow port and finished product of absorb the bottom of the tower receive
Slot is connected, and is provided in the pipeline between the overflow port of absorb the bottom of the tower and finished product receiving slit and can make absorb the bottom of the tower
Barometric pipe of the methylene chloride energy overflow into finished product receiving slit.
Further, the cooling liquid recyclable device of a kind of methylene chloride above-mentioned, in which: energy is provided in absorption tower
The filler for being uniformly mixed gas and liquid.
Further, the cooling liquid recyclable device of a kind of methylene chloride above-mentioned, in which: condenser is board-like condensation
Device.
Advantages of the present invention are as follows: a kind of cooling liquid recyclable device of methylene chloride of the present invention is using cooling two
Chloromethanes liquid carrys out cooling liquid methylene chloride steam, so that cooling liquid efficiency is very high, energy consumption is very low；In addition, being also provided with
Condenser prevents methylene chloride steam from not liquefying, so that recovery efficiency further increases.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of the cooling liquid recyclable device of methylene chloride of the present invention.
Specific embodiment
The present invention is described in further detail with attached drawing combined with specific embodiments below.
As shown in Figure 1, a kind of cooling liquid recyclable device of methylene chloride, comprising: for conveying methylene chloride steam
Jet chimney 3, jet chimney 3 are connected with the gas access of 4 lower part of absorption tower, the gas vent at 4 top of absorption tower and condensation
The gas access of device 5 is connected, and the gas vent of condenser 5 is connected with vacuum pump 7, the liquid outlet of condenser 5 and temporary
Tank 6 is connected, and the methylene chloride that condenser 5 is condensed out flows into the storage of temporary storage tank 6, and vacuum pump 7 can incite somebody to action after aspirating
Methylene chloride steam is pumped in absorption tower 4, so that methylene chloride steam is mixed with the methylene chloride liquid to flow downward upwards
Cooling liquid is carried out, the methylene chloride after liquefaction can converge into downwards 4 bottom of absorption tower with original methylene chloride liquid,
Not liquefied methylene chloride steam, which can be sucked up in condenser 5, to be condensed, and 4 bottom of absorption tower is by being set to absorption tower 4
The pipeline with pump and cooler 41 in outside is connected with the top on absorption tower 4, and pump can be by the dichloromethane solution of 4 bottom of absorption tower
Body is delivered to 4 top of absorption tower, so that methylene chloride liquid be made to flow from top to bottom in absorption tower 4, cooler 41 can be to two
Chloromethanes liquid is cooled down, and enables methylene chloride steam by methylene chloride liquid cooling liquid, the overflow of 4 bottom of absorption tower
Mouth is connected with finished product receiving slit 8, and is provided in the pipeline between the overflow port and finished product receiving slit 8 of 4 bottom of absorption tower
It can enable barometric pipe 81 of the methylene chloride overflow of 4 bottom of absorption tower into finished product receiving slit 8, barometric pipe 81 is with certain height
The fluid column of degree after aspirating due to vacuum pump 7 can make that negative pressure state is presented in absorption tower 4, so having to maintain one in the duct
The fluid column for determining height can just make the methylene chloride in absorption tower 4 overcome negative pressure and overflow into finished product receiving slit 8.
In the present embodiment, the filler that gas and liquid can be made to be uniformly mixed is provided in absorption tower 4.Condenser 5 is
Plate-type condenser.
Claims (3)
1. a kind of cooling liquid recyclable device of methylene chloride, it is characterised in that: include: the steaming for conveying methylene chloride steam
Steam pipe road, jet chimney are connected with the gas access of absorption tower lower part, the gas of gas vent and condenser at the top of absorption tower
Body entrance is connected, and the gas vent of condenser is connected with vacuum pump, and the liquid outlet of condenser is connected with temporary storage tank,
Methylene chloride steam can be pumped into absorption tower after vacuum pump suction so that methylene chloride steam upwards with flow downward
Methylene chloride liquid mixes to carry out cooling liquid, and the methylene chloride after liquefaction can converge downwards with original methylene chloride liquid
It is flow to absorb the bottom of the tower, not liquefied methylene chloride steam, which can be sucked up in condenser, to be condensed and be stored in temporary storage tank
In, absorb the bottom of the tower by be set on the outside of absorption tower with pump and cooler pipeline and absorption tower at the top of be connected, pump
The methylene chloride liquid of absorb the bottom of the tower can be delivered at the top of absorption tower, to make methylene chloride liquid in absorption tower from upper
To lower flowing, cooler can cool down methylene chloride liquid, and methylene chloride steam is cooled down by methylene chloride liquid
Liquefaction, the overflow port of absorb the bottom of the tower is connected with finished product receiving slit, and the overflow port of absorb the bottom of the tower and finished product receiving slit
Between pipeline in be provided with the barometric pipe that can enable the methylene chloride overflow of absorb the bottom of the tower into finished product receiving slit.
2. a kind of cooling liquid recyclable device of methylene chloride according to claim 1, it is characterised in that: in absorption tower
It is provided with the filler that gas and liquid can be made to be uniformly mixed.
3. a kind of cooling liquid recyclable device of methylene chloride according to claim 1 or 2, it is characterised in that: condenser
For plate-type condenser.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811246994.XA CN109400439A (en) | 2018-10-25 | 2018-10-25 | A kind of cooling liquid recyclable device of methylene chloride |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811246994.XA CN109400439A (en) | 2018-10-25 | 2018-10-25 | A kind of cooling liquid recyclable device of methylene chloride |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109400439A true CN109400439A (en) | 2019-03-01 |
Family
ID=65469647
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811246994.XA Pending CN109400439A (en) | 2018-10-25 | 2018-10-25 | A kind of cooling liquid recyclable device of methylene chloride |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109400439A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112830864A (en) * | 2020-12-24 | 2021-05-25 | 新沂市永诚化工有限公司 | Solvent recovery device for synthesis process of benzyl carbazate and use method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101700455A (en) * | 2009-10-29 | 2010-05-05 | 绍兴市荣发环保科技有限公司 | Toluene waste gas recovery system |
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| CN107803100A (en) * | 2017-10-30 | 2018-03-16 | 烟台国邦化工机械科技有限公司 | A kind of dichloromethane tail gas recycling retracting device and technique |
| CN207533016U (en) * | 2017-10-30 | 2018-06-26 | 烟台国邦化工机械科技有限公司 | A kind of dichloromethane tail gas resource utilization device |
| CN109368896A (en) * | 2018-10-25 | 2019-02-22 | 苏州浩波科技股份有限公司 | For recycling the impurity remove device of methylene chloride |
| CN109534950A (en) * | 2018-10-25 | 2019-03-29 | 苏州浩波科技股份有限公司 | A kind of methylene chloride recyclable device and its recovery process |
| CN209242961U (en) * | 2018-10-25 | 2019-08-13 | 苏州浩波科技股份有限公司 | A kind of methylene chloride recyclable device |
| CN209242844U (en) * | 2018-10-25 | 2019-08-13 | 苏州浩波科技股份有限公司 | For recycling the impurity remove device of methylene chloride |
-
2018
- 2018-10-25 CN CN201811246994.XA patent/CN109400439A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101700455A (en) * | 2009-10-29 | 2010-05-05 | 绍兴市荣发环保科技有限公司 | Toluene waste gas recovery system |
| CN201530786U (en) * | 2009-10-29 | 2010-07-21 | 绍兴市荣发环保科技有限公司 | Toluene waste gas recycling system |
| CN205759811U (en) * | 2016-05-16 | 2016-12-07 | 湖北楚天蓝环保设备工程有限公司 | A kind of benzene recycling and processing device |
| CN106349009A (en) * | 2016-08-30 | 2017-01-25 | 安徽金禾实业股份有限公司 | Distillation-condensation method of dichloromethane in acesulfame-k compound |
| CN107803100A (en) * | 2017-10-30 | 2018-03-16 | 烟台国邦化工机械科技有限公司 | A kind of dichloromethane tail gas recycling retracting device and technique |
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| CN109534950A (en) * | 2018-10-25 | 2019-03-29 | 苏州浩波科技股份有限公司 | A kind of methylene chloride recyclable device and its recovery process |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112830864A (en) * | 2020-12-24 | 2021-05-25 | 新沂市永诚化工有限公司 | Solvent recovery device for synthesis process of benzyl carbazate and use method |
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| TA01 | Transfer of patent application right |
Effective date of registration: 20221018 Address after: 226009 No. 968, Jiangshan Road, Nantong Economic and Technological Development Zone, Nantong City, Jiangsu Province Applicant after: NANTONG HONGXIN CHEMICAL Co.,Ltd. Address before: 215600 Suzhou Haobo Technology Co., Ltd., sanjiali Road, Nansha, Jingang town, Zhangjiagang City, Suzhou City, Jiangsu Province Applicant before: SUZHOU HOPE TECHNOLOGY CO.,LTD. |
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| TA01 | Transfer of patent application right |