CN209596912U - A kind of indoline production device for recovering tail gas - Google Patents
A kind of indoline production device for recovering tail gas Download PDFInfo
- Publication number
- CN209596912U CN209596912U CN201920152798.XU CN201920152798U CN209596912U CN 209596912 U CN209596912 U CN 209596912U CN 201920152798 U CN201920152798 U CN 201920152798U CN 209596912 U CN209596912 U CN 209596912U
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- CN
- China
- Prior art keywords
- level
- kettle
- lye absorption
- tail gas
- absorption kettle
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- 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.)
- Expired - Fee Related
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- Gas Separation By Absorption (AREA)
Abstract
The utility model relates to a kind of indolines to produce device for recovering tail gas, including elevated tank with caustic soda liquid, it further include respectively with the level-one lye absorption kettle of elevated tank with caustic soda liquid outlet at bottom piping connection and second level lye absorption kettle, the top and second level lye absorption kettle bottom of the level-one lye absorption kettle pass through piping connection；The outlet at bottom of the level-one lye absorption kettle passes through piping connection to reduction reaction kettle.The utility model structural principle is simple, SO 2 tail gas absorption efficiency is high, while first order absorption alkali wasteliquid being recovered in reduction reaction, not only saved waste water in this way but also has saved the raw material sodium pyrosulfite needed in production.The yield and quality of product is not influenced by trial production verifying, and greatly saves the inventory and liquid alkaline amount of sodium pyrosulfite.
Description
Technical field
The utility model relates to a kind of indolines to produce device for recovering tail gas, belong to chemical technology field.
Background technique
Diazonium salt of aniline is added in pyrosulfurous acid soda lye, carries out being reduced to phenylhydrazine using internal sulfite ion, molten
Contain excessive sodium sulfite salt inside liquid, demand removes in ring-closure reaction, can be effective under the conditions of sulfuric acid
Ring-closure reaction is carried out with methyl isopropyl Ketone.Reducing material can generate a large amount of sulfur dioxide after sulfuric acid is added, which needs logical
Crossing absorbing by liquid caustic soda perfect square can be discharged into air, otherwise will lead to environmental pollution and personal injury.Original process are to absorb this to give up
Liquid is directly discharged into wastewater disposal basin and carries out desalting processing, generates a large amount of solid waste and energy consumption.It is directly discharged into waste water and will increase subsequent give up
The load of salt treatment increases abraum salt amount, while increasing energy consumption and processing cost.
Utility model content
The shortcomings that technical problem to be solved in the utility model is, overcomes the prior art provides a kind of structural principle letter
Single, vent gas treatment effect is good and energy-saving and environment-friendly indoline production device for recovering tail gas.
In order to solve the above technical problems, the utility model provides a kind of indoline production device for recovering tail gas, including liquid
Alkali high position groove, feature exist: further including the level-one lye absorption kettle and two respectively with elevated tank with caustic soda liquid outlet at bottom piping connection
Grade lye absorption kettle, the top and second level lye absorption kettle bottom of the level-one lye absorption kettle pass through piping connection；Described one
The outlet at bottom of grade lye absorption kettle passes through piping connection to reduction reaction kettle.
The technical solution that the utility model further limits is: the bottom liquid outlet and level-one of the second level lye absorption kettle
The top duct of lye absorption kettle connects.
Further, the top of the reduction reaction kettle and the top of second level alkaline reaction kettle are met an urgent need by reduction reaction kettle
Pipeline connection overflows for preventing the too low generation sulfur dioxide of reduction reaction kettle PH, causes personal injury.
Further, the top of the level-one alkaline reaction kettle is connect with the outlet pipe of condensation reaction kettle.
Further, pacify on the top duct of the bottom liquid outlet of the second level lye absorption kettle and level-one lye absorption kettle
Equipped with liquid pump.
Further, pacify respectively on pipeline between elevated tank with caustic soda liquid and level-one lye absorption kettle, second level lye absorption kettle
Equipped with the first control valve.
Further, the second control valve is installed on pipeline between level-one lye absorption kettle and second level lye absorption kettle.
Further, third control valve is installed on pipeline between condensation reaction kettle and level-one lye absorption kettle.
Further, the 4th control valve is installed on pipeline between reduction reaction kettle and second level lye absorption kettle.
Further, inlet pipeline is also respectively connected in the level-one lye absorption kettle and second level lye absorption kettle.
The beneficial effects of the utility model are: the utility model structural principle is simple, SO 2 tail gas absorption efficiency is high,
First order absorption alkali wasteliquid is recovered in reduction reaction simultaneously, not only saved waste water in this way but also has saved the raw material needed in production
Sodium pyrosulfite.The yield and quality of product is not influenced by trial production verifying, and greatly saves sodium pyrosulfite
Inventory and liquid alkaline amount.
Detailed description of the invention
Fig. 1 is the structure connection diagram of the utility model embodiment 1.
Specific embodiment
The utility model is described further with reference to the accompanying drawings and detailed description.
Embodiment 1
It is provided in this embodiment, include as shown in Figure 1: elevated tank with caustic soda liquid, further includes going out respectively with elevated tank with caustic soda liquid bottom
The level-one lye absorption kettle and second level lye absorption kettle of mouth piping connection, the top of level-one lye absorption kettle and second level lye absorb
Bottom portion passes through piping connection；The outlet at bottom of level-one lye absorption kettle passes through piping connection to reduction reaction kettle.Second level lye
The bottom liquid outlet of absorption kettle is connect with the top duct of level-one lye absorption kettle.
Preferably, the top of reduction reaction kettle and the top of second level alkaline reaction kettle pass through reduction reaction kettle emergency pipeline
Connection overflows for preventing the too low generation sulfur dioxide of reduction reaction kettle PH, causes personal injury.Preferably, level-one lye
The top of reaction kettle is connect with the outlet pipe of condensation reaction kettle.
Preferably, being equipped on the bottom liquid outlet of second level lye absorption kettle and the top duct of level-one lye absorption kettle
Liquid pump 1 is squeezed into first order absorption kettle for the lye after second level is absorbed.
Preferably, pacifying respectively on pipeline between elevated tank with caustic soda liquid and level-one lye absorption kettle, second level lye absorption kettle
Equipped with the first control valve 2.
Preferably, the second control valve 3 is equipped on pipeline between level-one lye absorption kettle and second level lye absorption kettle.
Preferably, being equipped with third control valve 4 on pipeline between condensation reaction kettle and level-one lye absorption kettle.
Preferably, being equipped with the 4th control valve 5 on pipeline between reduction reaction kettle and second level lye absorption kettle.
Preferably, inlet pipeline is also respectively connected in the level-one lye absorption kettle and second level lye absorption kettle.
The present apparatus is tail gas recycle on the basis of 1.3.3 trimethyl -2- methine indoline production technology for generation
Processing.Phenylhydrazine is obtained by using excessive sulfite ion to restore diazonium salt of aniline in reduction reaction.React end system
In rich in there is excessive inferior sulfate radical, need to remove can closed loop be condensed into 1.3.3 trimethyl -2- methine indoline.It is logical
Cross addition sulfuric acid vacuum removal under certain temperature under strongly acidic conditions.For tail gas recycle by absorbing by liquid caustic soda, dioxy is avoided
Change sulphur to be directly discharged to cause personal injury and environmental pollution in air.Salt content is very high in lye after absorbing tail gas, and one
As 60% or more, it is directly very big with MVR desalting processing cost, and a large amount of industrial waste salt can be generated.According to reaction basis mechanism benzene
Amine diazonium salt is the phenylhydrazine restored by sodium pyrosulfite sulfite root, and is verified by a large amount of scientific experiment
The feasibility and economy that the absorption lye is applied.
The present embodiment structure is absorbed using two-stage, is on the one hand capable of the content of sufficiently cleaned up sulfur dioxide in tail gas, is made tail
Content of sulfur dioxide meets atmospheric emission standard in gas.On the other hand obtain level-one lye absorb high concentration sodium pyrosulfite and
Sodium sulfite, for used in production.This structure designs the amount for reducing cost for wastewater treatment and pollutant, because the by-product salt of generation is straight
Female connector is used in reaction.The energy consumption and processing cost for reducing wastewater treatment MVR there will not be a large amount of abraum salt and generate, reduce
The wastewater flow rate of energy consumption and generation and correspondingly increase waste treatment capacity.Reduction is used because the lye of first order absorption directly covers
In reaction, material cost of material is greatly saved, trial production and experiment statistics save the sodium pyrosulfite of 35%-45% and 30% liquid
Alkali.By the process optimization not only environmental protection but also production cost is saved.
PH control is most for absorbing the product in lye in this way 4.1 or so after level-one lye absorbs in the present embodiment
Sodium pyrosulfite, it is more advantageous to reduction reaction, also can maximum degree save the use cost of sodium pyrosulfite.Second level lye
PH guarantees 12 or more utmostly to the assimilation effect of sulfur dioxide after absorbing liquid absorbs.
In addition to the implementation, the utility model can also have other embodiments.It is all to use equivalent replacement or equivalent change
The technical solution to be formed is changed, the protection scope of the requires of the utility model is all fallen within.
Claims (10)
1. a kind of indoline produces device for recovering tail gas, including elevated tank with caustic soda liquid, feature exist: further including high-order with liquid alkaline respectively
Trench bottom export pipeline connection level-one lye absorption kettle and second level lye absorption kettle, the top of the level-one lye absorption kettle and
Second level lye absorption kettle bottom passes through piping connection；The outlet at bottom of the level-one lye absorption kettle passes through piping connection to reduction
Reaction kettle.
2. indoline according to claim 1 produces device for recovering tail gas, it is characterised in that: the second level lye absorption kettle
Bottom liquid outlet connect with the top duct of level-one lye absorption kettle.
3. indoline according to claim 2 produces device for recovering tail gas, it is characterised in that: the top of the reduction reaction kettle
Portion is connected to the top of second level alkaline reaction kettle by reduction reaction kettle emergency pipeline.
4. indoline according to claim 1-3 produces device for recovering tail gas, it is characterised in that: the level-one alkali
The top of liquid reaction kettle is connect with the outlet pipe of condensation reaction kettle.
5. indoline according to claim 3 produces device for recovering tail gas, it is characterised in that: the second level lye absorption kettle
Bottom liquid outlet and level-one lye absorption kettle top duct on liquid pump is installed.
6. indoline according to claim 5 produces device for recovering tail gas, it is characterised in that: in elevated tank with caustic soda liquid and level-one
The first control valve is separately installed on pipeline between lye absorption kettle, second level lye absorption kettle.
7. indoline according to claim 6 produces device for recovering tail gas, it is characterised in that: in level-one lye absorption kettle and
The second control valve is installed on pipeline between second level lye absorption kettle.
8. indoline according to claim 7 produces device for recovering tail gas, it is characterised in that: in condensation reaction kettle and level-one
Third control valve is installed on pipeline between lye absorption kettle.
9. indoline according to claim 8 produces device for recovering tail gas, it is characterised in that: in reduction reaction kettle and second level
4th control valve is installed on pipeline between lye absorption kettle.
10. indoline according to claim 9 produces device for recovering tail gas, it is characterised in that: the level-one lye absorbs
Inlet pipeline is also respectively connected in kettle and second level lye absorption kettle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920152798.XU CN209596912U (en) | 2019-01-29 | 2019-01-29 | A kind of indoline production device for recovering tail gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920152798.XU CN209596912U (en) | 2019-01-29 | 2019-01-29 | A kind of indoline production device for recovering tail gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209596912U true CN209596912U (en) | 2019-11-08 |
Family
ID=68402436
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920152798.XU Expired - Fee Related CN209596912U (en) | 2019-01-29 | 2019-01-29 | A kind of indoline production device for recovering tail gas |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209596912U (en) |
-
2019
- 2019-01-29 CN CN201920152798.XU patent/CN209596912U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191108 Termination date: 20220129 |