CN210683640U - Aminoacetic acid methyl alcohol condensation recovery plant - Google Patents
Aminoacetic acid methyl alcohol condensation recovery plant Download PDFInfo
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- CN210683640U CN210683640U CN201921494134.8U CN201921494134U CN210683640U CN 210683640 U CN210683640 U CN 210683640U CN 201921494134 U CN201921494134 U CN 201921494134U CN 210683640 U CN210683640 U CN 210683640U
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Abstract
The utility model relates to an aminoacetic acid methyl alcohol condensation recovery plant, including condenser, vapour and liquid separator, recovery storage tank and absorption tower, condenser one end is provided with the intake pipe to be connected with the tee bend through the intake pipe, two gas injection mouths of tee bend are connected with the gaseous phase pipeline of centrifuge and the gaseous phase pipeline of crystallization kettle through the connecting pipe respectively, the lower extreme of condenser is provided with the discharging pipe to be connected with vapour and liquid separator through the discharging pipe, the upper end of vapour and liquid separator is provided with the blast pipe, and is connected with the absorption tower through the blast pipe, is provided with the fan on the blast pipe, and the fan is located between vapour and liquid separator and; the lower end of the gas-liquid separator is provided with a liquid discharge pipe and is connected with the recovery storage tank through the liquid discharge pipe, and the liquid discharge pipe is provided with a check valve a which is positioned between the gas-liquid separator and the recovery storage tank; the utility model has the advantages of reasonable structure, low investment cost and high alcohol recovery rate.
Description
Technical Field
The utility model belongs to methyl alcohol condensation recovery field, concretely relates to glycine methyl alcohol condensation recovery plant.
Background
At present, the domestic production industrial aminoacetic acid process takes chloroacetic acid produced by a chlorination method as a raw material, then carries out an ammoniation reaction to generate aminoacetic acid reaction liquid, methanol is added in different stages to crystallize and separate out an aminoacetic acid solid product, and the aminoacetic acid solid product is washed by methanol in a centrifuge, mechanically separated and dried by a dryer to obtain a final product; the centrifugal mother liquor is rectified and separated by a rectifying tower, gas-phase methanol is condensed and recovered from a four-stage condenser at the top of the tower and then is recycled, the content of the recovered methanol is more than 92 percent, and meanwhile, methanol added in a crystallization kettle and a centrifugal machine at different stages is partially volatilized and is connected into a spray absorption tower through a drain pipeline for absorption; however, the existing process has the following disadvantages in the recovery of methanol: 1. volatile methanol in a crystallization kettle and a centrifuge is not completely recovered, and 2, when the methanol is recovered by the existing spray absorption tower, steam is consumed during repeated rectification due to low methanol content, so that the recovery is not reasonable; therefore, in order to solve the above problems, it is necessary to develop a condensation and recovery apparatus for glycine methanol, which has a reasonable structure, low investment cost and high alcohol recovery rate.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming the defects of the prior art and providing a glycine methanol condensation and recovery device which has reasonable structure, low investment cost and high alcohol recovery rate.
The purpose of the utility model is realized like this: the amino acetic acid methanol condensation recovery equipment comprises a condenser, a gas-liquid separator, a recovery storage tank and an absorption tower, wherein one end of the condenser is provided with an air inlet pipe and is connected with a tee joint through the air inlet pipe, two air injection ports of the tee joint are respectively connected with a gas phase pipeline of a centrifugal machine and a gas phase pipeline of a crystallization kettle through connecting pipes, a discharge pipe is arranged at the lower end of the condenser and is connected with the gas-liquid separator through the discharge pipe, an exhaust pipe is arranged at the upper end of the gas-liquid separator and is connected with the absorption tower through the exhaust pipe, a fan is arranged on the exhaust pipe, and; the lower end of the gas-liquid separator is provided with a liquid discharge pipe and is connected with the recovery storage tank through the liquid discharge pipe, and the liquid discharge pipe is provided with a check valve a which is positioned between the gas-liquid separator and the recovery storage tank.
The condenser is a four-stage condenser.
And a check valve b is arranged on the discharge pipe and is positioned between the condenser and the gas-liquid separator.
The absorption tower is a spray-type absorption tower.
The utility model has the advantages that: the utility model discloses a with crystallization kettle, the volatile gas of the methyl alcohol that centrifuge added in different stages, inject into the condenser through the gas phase pipeline earlier, after the condensation, inject into the gas-liquid separator and carry out the gas-liquid separation of methyl alcohol, finally, inject the methyl alcohol of gasification into and spray absorption tower and absorb, the utility model discloses a this technology, the reducible absorption tower in the methyl alcohol waste water treatment capacity, reduce the rectifying column and use the consumption of vapour, improve methyl alcohol recovery rate, simultaneously, the utility model discloses an set up gas-liquid separator, realized the gas-liquid separation of methyl alcohol, be convenient for the recycle of methyl alcohol; in addition, the utility model is provided with a check valve a on the liquid discharge pipe between the gas-liquid separator and the recovery storage tank, and a check valve b on the discharge pipe between the condenser and the gas-liquid separator, so that when the utility model is used, the backflow of the materials can be avoided; generally, the utility model has the advantages of rational in infrastructure, the input cost is low and alcohol recovery rate is high.
Drawings
Fig. 1 is a process flow diagram of the present invention.
In the figure: 1. condenser 11, air inlet pipe 12, discharge pipe 2, gas-liquid separator 21, exhaust pipe 22, liquid discharge pipe 3, recovery storage tank 4, absorption tower 5, tee joint 6, fan 7, check valve a 8 and check valve b.
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
Example (b): as shown in fig. 1, the glycine-methanol condensation recovery device comprises a condenser 1, a gas-liquid separator 2, a recovery storage tank 3 and an absorption tower 4, wherein the condenser 1 is a four-stage condenser, one end of the condenser 1 is provided with an air inlet pipe 11, the air inlet pipe 11 is connected with a tee joint 5, two air injection ports of the tee joint 5 are respectively connected with a gas phase pipeline of a centrifuge and a gas phase pipeline of a crystallization kettle through connecting pipes, the lower end of the condenser 1 is provided with a discharge pipe 12 and is connected with the gas-liquid separator 2 through the discharge pipe 12, the discharge pipe 12 is provided with a check valve b8, and the check valve b8 is positioned between the condenser 1 and; an exhaust pipe 21 is arranged at the upper end of the gas-liquid separator 2 and is connected with the absorption tower 4 through the exhaust pipe 21, a fan 6 is arranged on the exhaust pipe, the fan 6 is positioned between the gas-liquid separator 2 and the absorption tower 4, and the absorption tower 4 is a spray-type absorption tower; the lower end of the gas-liquid separator 2 is provided with a drain pipe 22 and is connected to the recovery tank 3 through the drain pipe 22, and the drain pipe 22 is provided with a check valve a7, and a check valve a7 is located between the gas-liquid separator 2 and the recovery tank 3.
The utility model discloses in the in-process of using, at first, the volatile gas of the methyl alcohol that adds in different stages inside crystallization kettle and centrifuge injects into condenser 1 inside through its gas phase pipeline and through tee bend 5 and intake pipe 11, through the condensation of condenser 1, most liquefaction forms methyl alcohol liquid in the volatile gas of methyl alcohol, then, inject methyl alcohol liquid and gaseous mixture into the inside of vapour and liquid separator 2, wherein, liquid methyl alcohol is through self action of gravity, downwards enter into to retrieve in the storage tank 3 through fluid-discharge tube 22, the gasification methyl alcohol rises and enters into through blast pipe 21 through the suction effect of fan 6 and absorbs in the spray absorption tower 4; the utility model adopts the mode, the treatment capacity of the methanol wastewater in the absorption tower 4 can be reduced, the consumption of the steam used by the rectifying tower is reduced, and the recovery rate of the methanol is improved; meanwhile, the gas-liquid separator 2 is arranged, so that the gas-liquid separation of the methanol is realized, and the methanol can be recycled conveniently; in addition, the utility model is provided with a check valve a7 on the liquid discharge pipe 22 between the gas-liquid separator 2 and the recovery storage tank 3, and a check valve b8 on the discharge pipe 12 between the condenser 2 and the gas-liquid separator 2, and the backflow of the materials can be avoided by utilizing the check valve a7 and the check valve b8 when the utility model is used; generally, the utility model has the advantages of rational in infrastructure, the input cost is low and alcohol recovery rate is high.
Claims (4)
1. The utility model provides an aminoacetic acid methyl alcohol condensation recovery plant, includes condenser (1), vapour and liquid separator (2), retrieves storage tank (3) and absorption tower (4), its characterized in that: an air inlet pipe (11) is arranged at one end of the condenser (1), the condenser is connected with a tee joint (5) through the air inlet pipe (11), two air injection ports of the tee joint (5) are respectively connected with a gas phase pipeline of a centrifugal machine and a gas phase pipeline of a crystallization kettle through connecting pipes, a discharge pipe (12) is arranged at the lower end of the condenser (1), the condenser is connected with a gas-liquid separator (2) through the discharge pipe (12), an exhaust pipe (21) is arranged at the upper end of the gas-liquid separator (2) and is connected with the absorption tower (4) through the exhaust pipe (21), a fan (6) is arranged on the exhaust pipe, and the fan (6) is positioned between the gas-; the lower end of the gas-liquid separator (2) is provided with a liquid discharge pipe (22) and is connected with the recovery storage tank (3) through the liquid discharge pipe (22), the liquid discharge pipe (22) is provided with a check valve a (7), and the check valve a (7) is positioned between the gas-liquid separator (2) and the recovery storage tank (3).
2. The aminoacetic methanol condensation recovery plant according to claim 1, characterized in that: the condenser (1) is a four-stage condenser.
3. The aminoacetic methanol condensation recovery plant according to claim 1, characterized in that: be provided with check valve b (8) on discharging pipe (12), check valve b (8) are located between condenser (1) and vapour and liquid separator (2).
4. The aminoacetic methanol condensation recovery plant according to claim 1, characterized in that: the absorption tower (4) is a spray-type absorption tower.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921494134.8U CN210683640U (en) | 2019-09-10 | 2019-09-10 | Aminoacetic acid methyl alcohol condensation recovery plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921494134.8U CN210683640U (en) | 2019-09-10 | 2019-09-10 | Aminoacetic acid methyl alcohol condensation recovery plant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210683640U true CN210683640U (en) | 2020-06-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921494134.8U Active CN210683640U (en) | 2019-09-10 | 2019-09-10 | Aminoacetic acid methyl alcohol condensation recovery plant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210683640U (en) |
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2019
- 2019-09-10 CN CN201921494134.8U patent/CN210683640U/en active Active
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