CN208757285U - A kind of recyclable device for formic acid vapor in acylation reaction - Google Patents
A kind of recyclable device for formic acid vapor in acylation reaction Download PDFInfo
- Publication number
- CN208757285U CN208757285U CN201821272573.XU CN201821272573U CN208757285U CN 208757285 U CN208757285 U CN 208757285U CN 201821272573 U CN201821272573 U CN 201821272573U CN 208757285 U CN208757285 U CN 208757285U
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- CN
- China
- Prior art keywords
- room
- acylation reaction
- lye
- formic acid
- pipe
- 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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- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 title claims abstract description 42
- 238000005917 acylation reaction Methods 0.000 title claims abstract description 33
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 title claims abstract description 21
- 235000019253 formic acid Nutrition 0.000 title claims abstract description 21
- 238000010521 absorption reaction Methods 0.000 claims abstract description 51
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 28
- 230000002745 absorbent Effects 0.000 claims abstract description 22
- 239000002250 absorbent Substances 0.000 claims abstract description 22
- 238000010992 reflux Methods 0.000 claims abstract description 9
- 238000011084 recovery Methods 0.000 claims abstract description 8
- HEMHJVSKTPXQMS-UHFFFAOYSA-M sodium hydroxide Inorganic materials [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 69
- CDBYLPFSWZWCQE-UHFFFAOYSA-L sodium carbonate Substances [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 4
- 238000009833 condensation Methods 0.000 claims description 3
- 230000005494 condensation Effects 0.000 claims description 3
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims description 2
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 2
- 238000005406 washing Methods 0.000 claims description 2
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 abstract description 5
- 238000006243 chemical reaction Methods 0.000 description 5
- 239000000126 substance Substances 0.000 description 4
- 239000007788 liquid Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000004064 recycling Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000019771 cognition Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
Landscapes
- Treating Waste Gases (AREA)
- Gas Separation By Absorption (AREA)
Abstract
The utility model discloses a kind of recyclable devices for formic acid vapor in acylation reaction, including the condensed absorbent room, water absorption room and lye absorption chamber set gradually from bottom to top；Tubular heat exchanger is equipped in condensed absorbent room; the bottom of condensed absorbent room is equipped with air inlet and the air inlet is connected to the exhaust outlet of acylation reaction device by evacuated tube; side wall is equipped with refluxing opening and the refluxing opening and is connected to acylation reaction device by return pipe, and side wall upper part is equipped with first row port and the first row port by downtake pipe is connected to water absorption room；The side wall upper part of water absorption room is equipped with overflow port and second exhaust port, and the overflow port is connected to acylation reaction device by overflow pipe, and second exhaust port is connected to lye absorption chamber by second exhaust pipe.The utility model is used to recycle the formic acid vapor and other sour gas in acylation reaction, has many advantages, such as that structure is simple, the rate of recovery is high, saves formic acid dosage.
Description
Technical field
The utility model relates to a kind of sour gas recyclable devices, and in particular to one kind is used to recycle during acylation reaction
The device of formic acid vapor and other sour gas belongs to chemical industry, pharmaceutical equipment technical field.
Background technique
Currently, the reactor that Chemical Manufacture and pharmaceutical industry use is mostly pot type reaction kettle.Pot type reaction kettle structure is simple,
Including import, outlet, tank body etc..The gaseous state that carries out for guarantee reaction process, therefore will be generated in reaction process in atmospheric conditions
Substance is discharged by evacuated tube, on the one hand this operation causes atmosphere pollution, and raw material is easily vaporized under another aspect high temperature from emptying
Pipe discharge, virtually increases Material Cost.
The characteristics of in view of current acylation reaction high temperature and existing reaction kettle, needs to develop during a kind of recycling acylation reaction
Formic acid vapor and other sour gas utilize device, to meet technical need, section drop production cost.
Utility model content
The technical problem to be solved by the present invention is to provide a kind of recyclable device for formic acid vapor in acylation reaction,
Have many advantages, such as that structure is simple, the rate of recovery is high.
In order to solve the above technical problems, technical solution adopted in the utility model is:
A kind of recyclable device for formic acid vapor in acylation reaction, including recovery tower；In the recovery tower from bottom to top
It is disposed with condensed absorbent room, water absorption room and lye absorption chamber；Tubular heat exchanger is equipped in the condensed absorbent room,
The bottom of condensed absorbent room is equipped with air inlet and the air inlet is connected to the exhaust outlet of acylation reaction device, condensation by evacuated tube
The side wall of absorption chamber is equipped with refluxing opening and the refluxing opening is connected to acylation reaction device, the side of condensed absorbent room by return pipe
Wall top is equipped with first row port and the first row port is connected to water absorption room by downtake pipe；The first row
Tracheae stretches in water after entering in water absorption room, and the side wall upper part of the water absorption room is equipped with overflow port and second exhaust
Mouthful, and the overflow port is connected to acylation reaction device by overflow pipe, and second exhaust port is connected to lye by second exhaust pipe
Absorption chamber；The second exhaust pipe stretches in lye after entering in lye absorption chamber.
Further, Butterworth Hatch is equipped on the side wall of the condensed absorbent room, water absorption room and lye absorption chamber.
Further, liquidometer is equipped in the water absorption room.
Further, the lye in the lye absorption chamber uses certain density sodium hydroxide, sodium carbonate or hydroxide
Potassium solution, as concentration be 30% NaOH solution.
Further, the exhaust pipe mouth that the second exhaust pipe stretches in lye is connected with distributor.
Further, blower is equipped on the downtake pipe and second exhaust pipe.
The beneficial effects of adopting the technical scheme are that
The utility model is used to recycle formic acid vapor and other sour gas in acylation reaction, has that structure is simple, returns
The advantages that high income.The utility model significantly improves the recovery utilization rate of formic acid, and compared with direct emission, the utility model can
So that formic acid dosage reduces 3%-5% in acylation reaction, therefore raw material usage is reduced, saves production cost, subtract simultaneously
Pollution of the chemical industry tail gas to atmosphere, practicability with higher are lacked.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model.
In figure: 1, condensed absorbent room, 2, water absorption room；3, lye absorption chamber, 4, evacuated tube, 5, return pipe, 6, overflow
Pipe, 7, downtake pipe, 8, second exhaust pipe.
Specific embodiment
Utility model will be further described in detail below with reference to the attached drawings and specific embodiments.
As shown in Figure 1, the utility model discloses a kind of recyclable devices for formic acid vapor in acylation reaction, including return
Receive tower；Condensed absorbent room 1, water absorption room 2 and lye absorption chamber 3 are disposed in recovery tower from bottom to top；Water absorption
Water and lye are stored respectively in room 2 and lye absorption chamber 3；Liquidometer is equipped in water absorption room 2, in lye absorption chamber 3
Lye use concentration for 30% NaOH solution.Tubular heat exchanger, the bottom of condensed absorbent room 1 are equipped in condensed absorbent room 1
Equipped with air inlet and the air inlet is connected to the exhaust outlet of acylation reaction device by evacuated tube 4, on the side wall of condensed absorbent room 1
Equipped with refluxing opening and the refluxing opening by return pipe 5 is connected to acylation reaction device, and the side wall upper part of condensed absorbent room 1 is equipped with the
One exhaust outlet and the first row port pass through downtake pipe 7 and are connected to water absorption room 2；Downtake pipe 7 enters washing
It is stretched in water after in absorption chamber 2, the side wall upper part of water absorption room 2 is equipped with overflow port and second exhaust port, and the overflow
Mouth is connected to acylation reaction device by overflow pipe 6, and second exhaust port is connected to lye absorption chamber 3 by second exhaust pipe 8；Second
Exhaust pipe 8 stretches in lye after entering in lye absorption chamber 3.
The utility model includes three-level recycling, using three absorption chambers: condensed absorbent room 1, water absorption room 2 and lye are inhaled
Room 3 is received, is equipped with Butterworth Hatch on the side wall of each absorption chamber.Each absorption chamber is mounted on hygrosensor.Acylation reaction produces
Evacuated tube 4 of the raw formic acid vapor first through bottom enters condensed absorbent room 1, is equipped with 5 ㎡ shell and tubes in condensed absorbent room 1 and exchanges heat
Device is back to acylation reaction device through return pipe 5 after formic acid vapor condensation, and remaining not solidifying gas enters through downtake pipe 7 to be washed
In absorption chamber 2 and it is passed through in water；It is equipped with overflow port at 2 20 ㎝ of top of water absorption room, most of gas in not solidifying gas
Cognition is dissolved in water, and liquid level acid solution extra when rising to overflow port flow to acylation reaction device through overflow pipe 6, and residue is a small amount of not
Solidifying gas enters in lye absorption chamber 3 with second exhaust pipe 8 and is passed through in lye, and concentration is used to inhale for 30% NaOH solution
It receives, and the exhaust pipe mouth that second exhaust pipe 8 stretches in lye is connected with distributor, guarantees to absorb abundant.Downtake pipe 7
It is equipped with blower on second exhaust pipe 8, gas discharge is accelerated by blower air blast.PH is carried out to the liquid in third absorption chamber 3
Value monitoring, when pH value is between 6.5-7.5, is expelled to recycling can for the liquid in third absorption chamber 3.
The above is only the preferred embodiments of the utility model, are not intended to limit the utility model, for this field
Technical staff for, various modifications and changes may be made to the present invention.Within the spirit and principle of the utility model,
Any modification, equivalent replacement, improvement and so on should be included within the scope of protection of this utility model.
Claims (6)
1. a kind of recyclable device for formic acid vapor in acylation reaction, including recovery tower；It is characterized by: in the recovery tower
It is disposed with condensed absorbent room (1), water absorption room (2) and lye absorption chamber (3) from bottom to top；The condensed absorbent room
(1) tubular heat exchanger is equipped in, the bottom of condensed absorbent room (1) is equipped with air inlet and the air inlet passes through evacuated tube (4)
It is connected to the exhaust outlet of acylation reaction device, the side wall of condensed absorbent room (1) is equipped with refluxing opening and the refluxing opening passes through reflux
Pipe (5) is connected to acylation reaction device, and the side wall upper part of condensed absorbent room (1) is equipped with first row port and the first row port is logical
It crosses downtake pipe (7) and is connected to water absorption room (2)；The downtake pipe (7) is protruded into after entering in water absorption room (2)
Into water, the side wall upper part of the water absorption room (2) is equipped with overflow port and second exhaust port, and the overflow port passes through overflow
Pipe (6) is connected to acylation reaction device, and second exhaust port is connected to lye absorption chamber (3) by second exhaust pipe (8)；Described second
Exhaust pipe (8) stretches in lye after entering in lye absorption chamber (3).
2. the recyclable device according to claim 1 for formic acid vapor in acylation reaction, it is characterised in that: the condensation
Butterworth Hatch is equipped on the side wall of absorption chamber (1), water absorption room (2) and lye absorption chamber (3).
3. the recyclable device according to claim 1 for formic acid vapor in acylation reaction, it is characterised in that: the washing
Liquidometer is equipped in absorption chamber (2).
4. the recyclable device according to claim 1 for formic acid vapor in acylation reaction, it is characterised in that: the lye
Lye in absorption chamber (3) uses certain density sodium hydroxide, sodium carbonate or potassium hydroxide solution.
5. the recyclable device according to claim 1 for formic acid vapor in acylation reaction, it is characterised in that: described second
The exhaust pipe mouth that exhaust pipe (8) stretches in lye is connected with distributor.
6. the recyclable device according to claim 1 for formic acid vapor in acylation reaction, it is characterised in that: described first
Blower is equipped on exhaust pipe (7) and second exhaust pipe (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821272573.XU CN208757285U (en) | 2018-08-08 | 2018-08-08 | A kind of recyclable device for formic acid vapor in acylation reaction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821272573.XU CN208757285U (en) | 2018-08-08 | 2018-08-08 | A kind of recyclable device for formic acid vapor in acylation reaction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208757285U true CN208757285U (en) | 2019-04-19 |
Family
ID=66131616
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821272573.XU Active CN208757285U (en) | 2018-08-08 | 2018-08-08 | A kind of recyclable device for formic acid vapor in acylation reaction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208757285U (en) |
-
2018
- 2018-08-08 CN CN201821272573.XU patent/CN208757285U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 051430 No.62 Zhangju Road, Luancheng District, Shijiazhuang City, Hebei Province Patentee after: Shiyao Innovation Pharmaceutical Co.,Ltd. Country or region after: China Address before: 051430 No.36, Fuqiang West Road, Luancheng District, Shijiazhuang City, Hebei Province Patentee before: SHIJIAZHUANG PHARMACEUTICAL GROUP NEW NORWICH PHARMACEUTICAL CO.,LTD. Country or region before: China |
|
| CP03 | Change of name, title or address |