CN213761188U - A device that is used for glyphosate production process triethylamine tail gas to retrieve - Google Patents
A device that is used for glyphosate production process triethylamine tail gas to retrieve Download PDFInfo
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- CN213761188U CN213761188U CN202022237637.6U CN202022237637U CN213761188U CN 213761188 U CN213761188 U CN 213761188U CN 202022237637 U CN202022237637 U CN 202022237637U CN 213761188 U CN213761188 U CN 213761188U
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- gas distribution
- absorption tank
- glyphosate
- absorption
- tail gas
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Abstract
A device for recovering triethylamine tail gas in a glyphosate production process comprises an absorption tank, wherein a glyphosate mother liquor inlet and a glyphosate mother liquor outlet are respectively formed in the upper part and the lower part of the outer wall of the absorption tank, and baffle plates which are alternately arranged left and right along the height direction of the absorption tank are arranged in the middle of the absorption tank; the bottom of the absorption tank is provided with a gas distribution unit, the gas distribution unit comprises a gas distribution main pipe, one end of the gas distribution main pipe penetrates through the side wall of the bottom of the absorption tank and is horizontally laid at the bottom of the absorption tank, the other end of the gas distribution main pipe is communicated with the glyphosate crystallization kettle, a plurality of gas distribution branch pipes are distributed in the length direction of the gas distribution main pipe, and two end parts of the gas distribution branch pipes are bent downwards; the device can effectively avoid the problems of low absorption efficiency, easy blockage and the like of the traditional spray absorption tower, and can effectively absorb triethylamine tail gas; the baffle plate is arranged, so that the absorption time of the triethylamine tail gas in the glyphosate mother liquor is prolonged, and the glyphosate mother liquor is used as an absorption solvent of the triethylamine tail gas, so that the waste of dilute hydrochloric acid is avoided, and the environmental protection pressure and the treatment cost are reduced.
Description
Technical Field
The utility model relates to a triethylamine tail gas absorbs technical field in the glyphosate production process, more specifically relates to a device that is used for triethylamine tail gas to retrieve of glyphosate production process.
Background
The common recovery mode of glyphosate trade to triethylamine tail gas adopts tail gas spray packing absorption tower at present, and the main drawback that the device exists to the absorption of triethylamine tail gas lies in that absorption efficiency is low, and the absorption effect is influenced by many-sided aspects such as spraying atomization effect, filler filling rate, absorption liquid circulation volume and absorption tower height, and impurity in the glyphosate mother liquor easily blocks up the shower head simultaneously, and the fault maintenance rate is higher.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the defects of the prior art, and provides a triethylamine tail gas recovery device in the glyphosate production process, which comprises an absorption groove for tail gas absorption, wherein the upper part and the lower part of the outer wall of the absorption groove are respectively provided with a glyphosate mother liquid inlet and a glyphosate mother liquid outlet, and the middle part of the absorption groove is provided with baffle plates which are alternately arranged along the height direction of the absorption groove; the bottom of the absorption tank is provided with a gas distribution unit, the gas distribution unit comprises a gas distribution main pipe, one end of the gas distribution main pipe penetrates through the side wall of the bottom of the absorption tank and is horizontally laid at the bottom of the absorption tank, the other end of the gas distribution main pipe is communicated with the glyphosate crystallization kettle, a plurality of gas distribution branch pipes are distributed in the length direction of the gas distribution main pipe, and two end parts of the gas distribution branch pipes are bent downwards; and a tail gas pipeline is arranged at the top of the absorption tank, and the tail end of the tail gas pipeline is connected with a variable frequency fan.
Wherein, the frequency conversion fan is arranged to be interlocked with the pressure in the absorption tank to control the formation of micro-negative pressure atmosphere in the absorption tank, and the pressure is between-0.1 and-1 kpa.
Preferably, the top of the glyphosate crystallization kettle is provided with an air release valve.
Preferably, the baffle plate is horizontally arranged or forms an angle of 15-30 degrees with the horizontal direction.
Preferably, a one-way check valve is arranged on the gas distribution main pipe between the glyphosate crystallization kettle and the absorption tank, and the horizontal position of the one-way check valve is higher than the liquid level position in the absorption tank.
Preferably, the gas distribution branch pipes are provided with 3-6 groups.
Has the advantages that: the device has reasonable design, can effectively avoid the problems of low absorption efficiency, easy blockage and the like of the traditional spray absorption tower, effectively absorb triethylamine tail gas and avoid the problem of environmental pollution; in addition, the baffle plate is arranged, so that the absorption time of the triethylamine tail gas in the glyphosate mother liquor is prolonged, and the glyphosate mother liquor is used as an absorption solvent of the triethylamine tail gas, so that the waste of dilute hydrochloric acid is avoided, and the environmental protection pressure and the treatment cost are reduced.
Drawings
FIG. 1 is a schematic structural view of a triethylamine tail gas recovery device of the present invention;
in the figure, 1-an absorption tank, 11-a glyphosate mother liquor inlet, 12-a glyphosate mother liquor outlet, 13-a baffle plate, 14-a gas distribution unit, 141-a gas distribution main pipe, 142-a gas distribution branch pipe, 15-a tail gas pipeline, 16-a variable frequency fan, 2-a glyphosate crystallization kettle, 21-an emptying valve and 3-a one-way check valve.
Detailed Description
In order to deepen the understanding of the present invention, the present invention will be further described in detail with reference to the following embodiments and the attached drawings, and the embodiments are only used for explaining the present invention, and do not constitute the limitation to the protection scope of the present invention.
Referring to fig. 1, the utility model provides a device for recovering triethylamine tail gas in glyphosate production process, which comprises an absorption tank 1 for tail gas absorption, a glyphosate mother liquor inlet 11 and a glyphosate mother liquor outlet 12 arranged on the upper part and the lower part of the outer wall of the absorption tank 1 respectively, and baffle plates 13 arranged along the height direction of the absorption tank in a left-right alternating manner arranged in the middle of the absorption tank 1; the bottom of the absorption tank 1 is provided with a gas distribution unit 14, the gas distribution unit 14 comprises a gas distribution header pipe 141, one end of the gas distribution header pipe 141 penetrates through the side wall of the bottom of the absorption tank 1 and is horizontally laid at the bottom of the absorption tank 1, the other end of the gas distribution header pipe 141 is communicated with the glyphosate crystallization kettle 2, a plurality of gas distribution branch pipes 142 are distributed in the length direction of the gas distribution header pipe 141, and two end parts of the gas distribution branch pipes 142 are bent downwards; and a tail gas pipeline 15 is arranged at the top of the absorption tank 1, and the tail end of the tail gas pipeline 15 is connected with a variable frequency fan 16.
In the technical scheme, the top of the glyphosate crystallization kettle 2 is provided with an emptying valve 21.
In the above technical solution, the baffle 13 is horizontally arranged or has an angle of 15-30 ° with the horizontal direction.
In the technical scheme, a one-way check valve 3 is arranged on a gas distribution main pipe between the glyphosate crystallization kettle 2 and the absorption tank 1, and the horizontal position of the one-way check valve 3 is higher than the liquid level position in the absorption tank 1.
In the above technical solution, the air distribution branch pipes 142 are provided with 3 to 6 groups.
The utility model discloses a concrete working process does: during operation, an emptying valve at the top of the glyphosate crystallization kettle is opened, glyphosate mother liquor is fed from a glyphosate mother liquor inlet, the injection liquid level is slightly higher than a baffle plate and 10-15cm higher than the baffle plate, a variable frequency fan is opened, a single check valve is opened simultaneously to enable tail gas to enter an absorption tank, the tail gas is uniformly distributed at the bottom of the absorption tank through a gas distribution unit and is absorbed by the baffle plate in a continuous baffling manner, the pH value of the glyphosate mother liquor in the absorption tank is regularly monitored, the glyphosate mother liquor is replaced when the pH value is higher than 2, and the triethylamine tail gas is ensured to be smoothly absorbed.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. A device for recovering triethylamine tail gas in a glyphosate production process is characterized by comprising an absorption tank for tail gas absorption, wherein the upper part and the lower part of the outer wall of the absorption tank are respectively provided with a glyphosate mother liquid inlet and a glyphosate mother liquid outlet, and the middle part of the absorption tank is provided with baffle plates which are alternately arranged left and right along the height direction of the absorption tank; the bottom of the absorption tank is provided with a gas distribution unit, the gas distribution unit comprises a gas distribution main pipe, one end of the gas distribution main pipe penetrates through the side wall of the bottom of the absorption tank and is horizontally laid at the bottom of the absorption tank, the other end of the gas distribution main pipe is communicated with the glyphosate crystallization kettle, a plurality of gas distribution branch pipes are distributed in the length direction of the gas distribution main pipe, and two end parts of the gas distribution branch pipes are bent downwards; and a tail gas pipeline is arranged at the top of the absorption tank, and the tail end of the tail gas pipeline is connected with a variable frequency fan.
2. The device for recycling triethylamine tail gas in glyphosate production according to claim 1, wherein a blow-down valve is arranged at the top of the glyphosate crystallization kettle.
3. The device for recycling triethylamine tail gas in glyphosate production according to claim 1, wherein the baffle plate is horizontally arranged or forms an angle of 15-30 ° with the horizontal direction.
4. The device for recovering triethylamine tail gas in the glyphosate production process according to claim 1, wherein a one-way check valve is arranged on a gas distribution main pipe between the glyphosate crystallization kettle and the absorption tank, and the horizontal position of the one-way check valve is higher than the liquid level position in the absorption tank.
5. The device for recycling triethylamine exhaust gas in glyphosate production process according to claim 1, wherein the gas distribution branch pipes are provided with 3-6 groups.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022237637.6U CN213761188U (en) | 2020-10-10 | 2020-10-10 | A device that is used for glyphosate production process triethylamine tail gas to retrieve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022237637.6U CN213761188U (en) | 2020-10-10 | 2020-10-10 | A device that is used for glyphosate production process triethylamine tail gas to retrieve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213761188U true CN213761188U (en) | 2021-07-23 |
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ID=76908308
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022237637.6U Active CN213761188U (en) | 2020-10-10 | 2020-10-10 | A device that is used for glyphosate production process triethylamine tail gas to retrieve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213761188U (en) |
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2020
- 2020-10-10 CN CN202022237637.6U patent/CN213761188U/en active Active
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