CN212790411U - Automatic control air inlet mechanism of DMF (dimethyl formamide) recovery tower - Google Patents
Automatic control air inlet mechanism of DMF (dimethyl formamide) recovery tower Download PDFInfo
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- CN212790411U CN212790411U CN202021671307.1U CN202021671307U CN212790411U CN 212790411 U CN212790411 U CN 212790411U CN 202021671307 U CN202021671307 U CN 202021671307U CN 212790411 U CN212790411 U CN 212790411U
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Abstract
The utility model discloses an automatic control air inlet mechanism of DMF recovery tower relates to the DMF and retrieves technical field, specifically is an automatic control air inlet mechanism of DMF recovery tower, including the intake pipe, the right side fixedly connected with air intake pump of intake pipe, the right side fixedly connected with gas-supply pipe of air intake pump, the outside fixed mounting of gas-supply pipe has first stop valve, the right-hand member fixedly connected with absorption tank of gas-supply pipe, the top fixedly connected with blast pipe of absorption tank, the middle part of blast pipe is provided with the DMF detector, the right side electric connection of DMF detector has the controller. The DMF detector is arranged to detect the DMF in the waste gas, when the content of the DMF in the waste gas is high, the DMF dissolved in the absorption liquid tends to be saturated, more DMF gas is difficult to dissolve, and the controller controls the air inlet pump to be closed to stop conveying the DMF waste gas to the inside of the absorption tank, so that the waste of the DMF gas is avoided.
Description
Technical Field
The utility model relates to a technical field is retrieved to the DMF, specifically is a mechanism admits air of automatic control of DMF recovery tower.
Background
Dimethylformamide (DMF) is a colorless transparent liquid that is miscible with water and most organic solvents. Pure dimethyl formamide has special odor, and industrial grade or deteriorated dimethyl formamide has fishy odor, and because the pure dimethyl formamide contains dimethyl amine impurities, the main principle of a DMF recovery tower is that water-soluble DMF is absorbed by water and is recovered by rectification, and the recoverable organic solvent is reused in production.
The DMF gas is required to be dissolved in water in the process of recycling DMF, but the solubility of DMF in water has certain limitation, more DMF gas is difficult to be dissolved when the DMF dissolved in water is saturated, at the moment, if the DMF gas is input into the water again, waste is caused, the air intake of the DMF gas is controlled manually at present, operators are often required to pay close attention to the condition of the DMF gas, if the operators do not find DMF gas absorption protection timely, the waste of the DMF gas is caused, and therefore an automatic control air intake mechanism of a DMF recycling tower is provided.
SUMMERY OF THE UTILITY MODEL
To prior art not enough, the utility model provides an automatic control mechanism of admitting air of DMF recovery tower has solved the problem that proposes in the above-mentioned background art.
In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: the utility model provides an automatic control air intake mechanism of DMF recovery tower, includes the intake pipe, the right side fixedly connected with air intake pump of intake pipe, the right side fixedly connected with gas-supply pipe of air intake pump, the outside fixed mounting of gas-supply pipe has first stop valve, the right-hand member fixedly connected with absorption tank of gas-supply pipe, the top fixedly connected with blast pipe of absorption tank, the middle part of blast pipe is provided with the DMF detector, the right side electric connection of DMF detector has the controller, the top fixed mounting of blast pipe has waste gas valve and air return valve, pipeline fixedly connected with waste gas tank is passed through in the left side of waste gas valve, the right-hand member of air return valve has the gas holder through the pipe connection.
Optionally, the absorption tank is internally provided with absorption liquid, the absorption liquid is internally provided with a gas distribution pipe, and the left end of the gas distribution pipe is connected with the right end of the gas transmission pipe.
Optionally, the right side fixedly connected with delivery pump of adsorption tank, there is the retort right side of delivery pump through the pipe connection, the top of retort is provided with the recovery tower.
Optionally, the top fixedly connected with inlet tube of adsorption tank, the inlet tube communicates with external water pipe.
Optionally, the left side fixedly connected with back flow of gas holder, the bottom of back flow links together with the top of intake pipe, the outside of back flow is provided with the second stop valve.
Optionally, the controller is electrically connected to the intake pump, the waste gas valve, the air return valve, and the second stop valve, respectively.
The utility model provides an automatic control air intake mechanism of DMF recovery tower possesses following beneficial effect:
1. this automatic control mechanism of admitting air of DMF recovery tower detects the DMF in the waste gas through setting up the DMF detector, and when the DMF content in the waste gas was higher, it indicates that the inside DMF of dissolving of absorption liquid tends to the saturation, and more DMF is gaseous to be difficult to dissolve, and at this moment the controller control air inlet pump is closed and is stopped to carry the DMF waste gas to the inside of absorption tank, avoids causing the DMF gaseous waste.
2. According to the automatic control air inlet mechanism of the DMF recovery tower, the air storage tank is arranged, when more DMF gas exists in the absorption tank, the controller controls the waste gas valve to be closed and simultaneously opens the air return valve, so that waste gas containing DMF is conveyed into the air storage tank for temporary storage, and then is conveyed into the air inlet pipe through the return pipe for secondary circulation absorption, and the absorption efficiency of DMF is improved.
Drawings
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a connection block diagram of the controller of the present invention.
In the figure: 1. an air inlet pipe; 2. an intake pump; 3. a gas delivery pipe; 4. a first shut-off valve; 5. an absorption tank; 6. an absorption liquid; 7. a gas distributing pipe; 8. a delivery pump; 9. a distillation tank; 10. a recovery tower; 11. a water inlet pipe; 12. an exhaust pipe; 13. a DMF detector; 14. a controller; 15. an exhaust gas valve; 16. an air return valve; 17. an exhaust gas tank; 18. a gas storage tank; 19. a return pipe; 20. a second shut-off valve.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.
Referring to fig. 1 to 2, the present invention provides a technical solution: an automatic control air inlet mechanism of a DMF recovery tower comprises an air inlet pipe 1, an air inlet pump 2 is fixedly connected on the right side of the air inlet pipe 1, an air delivery pipe 3 is fixedly connected on the right side of the air inlet pump 2, a first stop valve 4 is fixedly installed outside the air delivery pipe 3, an absorption tank 5 is fixedly connected on the right end of the air delivery pipe 3, absorption liquid 6 is arranged inside the absorption tank 5, a gas distribution pipe 7 is arranged inside the absorption liquid 6, DMF-containing gas is dispersed into the absorption liquid 6 through the gas distribution pipe 7 by the aid of the gas distribution pipe 7, contact area between the gas and the absorption liquid 6 is increased, absorption of the DMF gas by the absorption liquid 6 is facilitated, absorption efficiency of the DMF gas is improved, the left end of the gas distribution pipe 7 is connected with the right end of the air delivery pipe 3, a delivery pump 8 is fixedly connected on the right side of the absorption tank 5, the right side of the delivery pump 8 is connected with a distillation tank 9, the top of the absorption tank 5 is fixedly connected with a water inlet pipe 11, the water inlet pipe 11 is communicated with an external water pipe, the top of the absorption tank 5 is fixedly connected with an exhaust pipe 12, the middle part of the exhaust pipe 12 is provided with a DMF detector 13, DMF in the exhaust gas is detected by the arrangement of the DMF detector 13, when the content of DMF in the exhaust gas is high, the DMF dissolved in the absorption liquid 6 tends to be saturated and more DMF gas is difficult to dissolve, at this time, the controller 14 controls the air inlet pump 2 to be closed and stops conveying DMF exhaust gas to the inside of the absorption tank 5, so as to avoid DMF gas waste, the right side of the DMF detector 13 is electrically connected with the controller 14, the controller 14 is respectively electrically connected with the air inlet pump 2, the exhaust gas valve 15, the air return valve 16 and the second stop valve 20, the top of the exhaust pipe 12 is fixedly provided with the exhaust gas valve 15 and the air return valve 16, the left side of the exhaust gas, carry out further processing to waste gas after convenient, avoid discharging waste gas in the air and cause the pollution to the environment, there is gas holder 18 at the right-hand member of return air valve 16 through the pipe connection, the left side fixedly connected with back flow 19 of gas holder 18, the bottom of back flow 19 links together with the top of intake pipe 1, through setting up gas holder 18, when there is more DMF gas in the inside of absorption tank 5, controller 14 control waste gas valve 15 closes and opens return air valve 16 simultaneously, make the waste gas that contains DMF carry and carry out interim storage in the gas holder 18, later carry by the back flow 19 again and carry out the secondary cycle absorption in the intake pipe 1, the absorption efficiency of DMF is improved, the outside of back flow 19 is provided with second stop valve 20.
In summary, the automatic control air inlet mechanism of the DMF recycling tower is used, when in use, waste gas containing DMF is conveyed into an absorption tank 5 through an air inlet pump 2, DMF gas is dissolved and absorbed by absorption liquid 6 in the absorption tank 5, the dissolved liquid is conveyed into a distillation tank 9 by a conveying pump 8 for distillation for recycling DMF and other organic matters, gas which is not absorbed in the absorption tank 5 is conveyed into a waste gas tank 17 through an exhaust pipe 12 for storage, when DMF detector 13 detects that the content of DMF is high, the dissolved DMF in the absorption liquid 6 tends to be saturated, more DMF gas is difficult to dissolve, then a controller 14 controls the air inlet pump 2 to be closed to stop conveying DMF waste gas to the interior of the absorption tank 5, a gas return valve 16 is opened simultaneously, the waste gas containing DMF is conveyed into a gas storage tank 18 for temporary storage, and then conveyed into an air inlet pipe 1 through a return pipe 19 for secondary circulation absorption, and (4) finishing.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (6)
1. The utility model provides an automatic control mechanism of admitting air of DMF recovery tower, includes intake pipe (1), its characterized in that: the right side fixedly connected with of intake pipe (1) pump (2) admits air, the right side fixedly connected with gas transmission pipe (3) of pump (2) admits air, the outside fixed mounting of gas transmission pipe (3) has first stop valve (4), the right-hand member fixedly connected with absorption tank (5) of gas transmission pipe (3), top fixedly connected with blast pipe (12) of absorption tank (5), the middle part of blast pipe (12) is provided with DMF detector (13), the right side electric connection of DMF detector (13) has controller (14), the top fixed mounting of blast pipe (12) has waste gas valve (15) and return air valve (16), pipeline fixedly connected with waste gas tank (17) is passed through in the left side of waste gas valve (15), the right-hand member of return air valve (16) has gas holder (18) through the pipe connection.
2. The automatic control gas inlet mechanism of a DMF recycling tower according to claim 1, wherein: the absorption tank is characterized in that absorption liquid (6) is arranged in the absorption tank (5), a gas distribution pipe (7) is arranged in the absorption liquid (6), and the left end of the gas distribution pipe (7) is connected with the right end of the gas conveying pipe (3).
3. The automatic control gas inlet mechanism of a DMF recycling tower according to claim 1, wherein: the right side fixedly connected with delivery pump (8) of adsorption tank (5), there is retort (9) on the right side of delivery pump (8) through the pipe connection, the top of retort (9) is provided with recovery tower (10).
4. The automatic control gas inlet mechanism of a DMF recycling tower according to claim 1, wherein: the top fixedly connected with inlet tube (11) of adsorption tank (5), inlet tube (11) and external water pipe intercommunication.
5. The automatic control gas inlet mechanism of a DMF recycling tower according to claim 1, wherein: the left side fixedly connected with back flow (19) of gas holder (18), the bottom of back flow (19) links together with the top of intake pipe (1), the outside of back flow (19) is provided with second stop valve (20).
6. The automatic control gas inlet mechanism of a DMF recycling tower according to claim 1, wherein: the controller (14) is respectively electrically connected with the air inlet pump (2), the waste gas valve (15), the air return valve (16) and the second stop valve (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021671307.1U CN212790411U (en) | 2020-08-12 | 2020-08-12 | Automatic control air inlet mechanism of DMF (dimethyl formamide) recovery tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021671307.1U CN212790411U (en) | 2020-08-12 | 2020-08-12 | Automatic control air inlet mechanism of DMF (dimethyl formamide) recovery tower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212790411U true CN212790411U (en) | 2021-03-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021671307.1U Active CN212790411U (en) | 2020-08-12 | 2020-08-12 | Automatic control air inlet mechanism of DMF (dimethyl formamide) recovery tower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212790411U (en) |
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2020
- 2020-08-12 CN CN202021671307.1U patent/CN212790411U/en active Active
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