CN219185851U - Recovery system of waste material in continuous production N, N-diethyl formamide industrialization device - Google Patents
Recovery system of waste material in continuous production N, N-diethyl formamide industrialization device Download PDFInfo
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- CN219185851U CN219185851U CN202222386653.0U CN202222386653U CN219185851U CN 219185851 U CN219185851 U CN 219185851U CN 202222386653 U CN202222386653 U CN 202222386653U CN 219185851 U CN219185851 U CN 219185851U
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- 238000011084 recovery Methods 0.000 title claims abstract description 66
- SUAKHGWARZSWIH-UHFFFAOYSA-N N,N‐diethylformamide Chemical compound CCN(CC)C=O SUAKHGWARZSWIH-UHFFFAOYSA-N 0.000 title claims abstract description 31
- 239000002699 waste material Substances 0.000 title claims abstract description 14
- 238000010924 continuous production Methods 0.000 title claims description 4
- 238000001704 evaporation Methods 0.000 claims abstract description 28
- 230000008020 evaporation Effects 0.000 claims abstract description 28
- 238000003860 storage Methods 0.000 claims description 21
- 238000004064 recycling Methods 0.000 claims description 16
- 239000000463 material Substances 0.000 claims description 14
- 238000006243 chemical reaction Methods 0.000 claims description 5
- 239000002994 raw material Substances 0.000 claims description 4
- 238000004821 distillation Methods 0.000 claims description 2
- 238000000926 separation method Methods 0.000 claims description 2
- 230000002194 synthesizing effect Effects 0.000 claims 1
- 230000015572 biosynthetic process Effects 0.000 abstract description 13
- 238000003786 synthesis reaction Methods 0.000 abstract description 13
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 125000004177 diethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 abstract description 3
- 239000007788 liquid Substances 0.000 description 6
- 238000010992 reflux Methods 0.000 description 6
- QUSNBJAOOMFDIB-UHFFFAOYSA-N Ethylamine Chemical compound CCN QUSNBJAOOMFDIB-UHFFFAOYSA-N 0.000 description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 239000002904 solvent Substances 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 2
- HPNMFZURTQLUMO-UHFFFAOYSA-N diethylamine Chemical compound CCNCC HPNMFZURTQLUMO-UHFFFAOYSA-N 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000012071 phase Substances 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L sodium carbonate Substances [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- 239000004970 Chain extender Substances 0.000 description 1
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- MHABMANUFPZXEB-UHFFFAOYSA-N O-demethyl-aloesaponarin I Natural products O=C1C2=CC=CC(O)=C2C(=O)C2=C1C=C(O)C(C(O)=O)=C2C MHABMANUFPZXEB-UHFFFAOYSA-N 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 229920002120 photoresistant polymer Polymers 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 239000009719 polyimide resin Substances 0.000 description 1
- 229920005749 polyurethane resin Polymers 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- -1 sodium alkoxide Chemical class 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- QDRKDTQENPPHOJ-UHFFFAOYSA-N sodium ethoxide Chemical compound [Na+].CC[O-] QDRKDTQENPPHOJ-UHFFFAOYSA-N 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 239000012808 vapor phase Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
The utility model relates to a recovery system for waste materials in an industrial device for continuously producing N, N-diethyl formamide, which comprises a synthesis tower, an evaporation separator, a first rectifying tower and a finished product tank, wherein the output end of the synthesis tower is communicated with the input end of the evaporation separator; the design of the light component recovery mechanism and the heavy component recovery mechanism can effectively recover the light components generated in the industrial device for producing the N, N-diethyl formamide, reduce the diethyl unit consumption of DEF, reduce the production cost of DEF and improve the product yield.
Description
Technical Field
The utility model relates to the technical field, in particular to a recovery system for waste materials in an industrial device for continuously producing N, N-diethyl formamide.
Background
N, N-diethyl formamide is an organic solvent with very strong solubility, has toxicity lower than DMF and DMAC, has very wide application, and is mainly used for cleaning LED photoresist and circuit boards, shoe material treating agents, aqueous polyurethane resin hydrophilic chain extender, polyimide resin solvent, paint solvent, lithium ion battery slurry solvent and the like at present.
At present, an N, N-diethyl formamide production device adopts an alcohol solution of sodium alkoxide as a catalyst, diethylamine and CO as raw materials to react to generate DEF, materials in a synthesis tower fully react, the materials enter an evaporator to remove solid impurities such as sodium ethoxide, sodium carbonate and sodium hydroxide, and then the materials sequentially pass through a first rectifying tower to remove light components, and a second rectifying tower to remove heavy components, so that a qualified DEF product is obtained.
The utility model provides a new solution to the problems that the first rectifying tower can produce light components and the second rectifying tower can produce heavy components (kettle residual liquid) in the DEF production process, the light components are mainly diethylamine and alcohol in a catalyst, but the water and other light components can not be directly recycled, and the heavy components contain a large amount of DEF products, so that the waste of the products can be caused, and the yield of the system is reduced.
Disclosure of Invention
Aiming at the problems in the prior art, the utility model aims to provide a recovery system for waste materials in an industrial device for continuously producing N, N-diethyl formamide, so as to solve the technical problems in the background art.
In order to solve the problems, the utility model adopts the following technical scheme.
The utility model provides a recovery system of waste material in continuous production N, N-diethyl formamide industrialization device, includes the synthetic tower that is used for raw materials reaction, is used for preliminary separation composite's evaporation separator, is used for extracting synthetic product's first rectifying column and is used for collecting the finished product jar of contract thing, the output of synthetic tower with evaporation separator's input intercommunication, evaporation separator's output with first rectifying column's input intercommunication, first rectifying column's finished product output with the input of finished product jar intercommunication, its characterized in that: the utility model discloses a distillation column, including the first rectifying column, the finished product jar, be provided with light component recovery mechanism and heavy component recovery mechanism between the first rectifying column with be provided with return line on the light component recovery mechanism, return line's output with the top intercommunication in the synthetic tower is provided with recovery pipeline on the heavy component recovery mechanism, is provided with the three-way valve on the recovery pipeline, one of them output of three-way valve with evaporation separator's input intercommunication.
Preferably, the light component recovery mechanism comprises a light component storage tank and a light component recovery tower, wherein the input end of the light component storage tank is communicated with the top output end of the first rectifying tower, the bottom output end of the light component storage tank is communicated with the input end of the light component recovery tower, the top output end of the light component recovery tower is communicated with the top in the synthesis tower through a return pipeline, and the bottom of the light component recovery tower is connected with a material tank for recovery.
In any of the above schemes, preferably, the heavy component recovery mechanism includes a second rectifying tower and a heavy component tank, an input end of the second rectifying tower is communicated with a bottom output end of the first rectifying tower, a top output end of the second rectifying tower is communicated with an input end of the finished product tank, a bottom recovery end of the second rectifying tower is communicated with an input end of the three-way valve, and another output end of the three-way valve is communicated with an input end of the heavy component tank.
In any of the above schemes, it is preferable that the return line is provided with a first return pump, and the output end of the three-way valve is provided with a second return pump.
In any of the above embodiments, it is preferable that the second rectifying column is a negative pressure column.
Compared with the prior art, the utility model has the advantages that:
according to the design of the light component recovery mechanism and the heavy component recovery mechanism, the light components generated in the industrial device for producing the N, N-diethyl formamide can be effectively recovered through the light component storage tank and the light component recovery tower, so that the diethyl unit consumption of DEF is reduced, and the production cost of the DEF is reduced; the heavy components generated in the industrial device for producing the N, N-diethyl formamide can be effectively recycled through the heavy component tank, so that the production cost can be effectively reduced, and the product yield can be improved.
Drawings
FIG. 1 is a schematic diagram of the overall structure of a system for recycling waste materials in an industrial plant for continuously producing N, N-diethylformamide according to the present utility model.
The reference numerals in the figures illustrate:
1. a synthesis tower; 2. an evaporation separator; 3. a first rectifying column; 4. a finished product tank; 5. a light component recovery mechanism; 6. a heavy component recovery mechanism; 7. a return line; 8. a recovery pipeline; 9. a three-way valve; 501. a light component storage tank; 502. a light component recovery tower; 503. a material tank; 601. a second rectifying column; 602. a heavy component tank; 10. a first return pump; 11. and a second reflux pump.
Detailed Description
The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model; it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments, and that all other embodiments obtained by persons of ordinary skill in the art without making creative efforts based on the embodiments in the present utility model are within the protection scope of the present utility model.
Examples:
referring to fig. 1, a recovery system for continuously producing waste materials in an N, N-diethylformamide industrialization device comprises a synthesis tower 1 for raw material reaction, an evaporation separator 2 for primarily separating a synthesized product, a first rectifying tower 3 for extracting the synthesized product and a finished product tank 4 for collecting the contracted product, wherein the output end of the synthesis tower 1 is communicated with the input end of the evaporation separator 2, the output end of the evaporation separator 2 is communicated with the input end of the first rectifying tower 3, the finished product output end of the first rectifying tower 3 is communicated with the input end of the finished product tank 4, a light component recovery mechanism 5 and a heavy component recovery mechanism 6 are arranged between the first rectifying tower 3 and the finished product tank 4, a reflux pipeline 7 is arranged on the light component recovery mechanism 5, the output end of the reflux pipeline 7 is communicated with the top in the synthesis tower 1, a recovery pipeline 8 is arranged on the heavy component recovery mechanism 6, a three-way valve 9 is arranged on the recovery pipeline 8, and one of the output ends of the three-way valve 9 is communicated with the input end of the evaporation separator 2;
wherein the operation temperature of the evaporation separator 2 is 175 to 195 ℃, the pressure of the evaporation separator 2 is 0.04 to 0.08MPa (G), the operation temperature of the first rectifying tower 3 is 185 to 205 ℃, the operation temperature of the top of the first rectifying tower 3 is 75 to 85 ℃, and the top pressure of the first rectifying tower 3 is 0.04 to 0.08MPa (G);
in this embodiment, further, the light component recovery mechanism 5 includes a light component storage tank 501 and a light component recovery tower 502, the input end of the light component storage tank 501 is communicated with the top output end of the first rectifying tower 3, the bottom output end of the light component storage tank 501 is communicated with the input end of the light component recovery tower 502, the top output end of the light component recovery tower 502 is communicated with the top in the synthesis tower 1 through a return pipeline 7, and the bottom of the light component recovery tower 502 is connected with a material tank 503 for recovery;
wherein the operating temperature of the light component storage tank 501 is 20 to 40 ℃, the pressure of the light component storage tank 501 is 0.01-0.15MPa (G), the operating temperature of the light component recovery tower 502 is 75 to 90 ℃, the operating temperature of the top of the light component recovery tower 502 is 50 to 60 ℃, and the top pressure of the light component recovery tower 502 is 0.01 to 0.04MPa (G);
in this embodiment, further, the heavy component recovery mechanism 6 includes a second rectifying tower 601 and a heavy component tank 602, an input end of the second rectifying tower 601 is communicated with a bottom output end of the first rectifying tower 3, a top output end of the second rectifying tower 601 is communicated with an input end of the finished product tank 4, a bottom recovery end of the second rectifying tower 601 is communicated with an input end of the three-way valve 9, and another output end of the three-way valve 9 is communicated with an input end of the heavy component tank 602;
in this embodiment, further, the return line 7 is provided with a first return pump 10, and the output end of the three-way valve 9 is provided with a second return pump 11;
in this embodiment, the second rectification column 601 is a negative pressure column;
wherein the operation temperature of the second rectifying tower 601 is 120-140 ℃, the operation temperature of the top of the second rectifying tower 601 is 100-120 ℃, and the pressure of the top of the tower is-80-98 KPa (G).
The working process of the utility model is carried out according to the following specific process steps:
1. and (3) light component recovery: the tower bottom liquid in the synthesis tower 1 is conveyed into the evaporation separator 2, the tower bottom liquid enters the evaporation separator 2, the vapor phase enters the first rectifying tower 3 through the output end at the top of the evaporation separator 2 after evaporation, the light component enters the light component storage tank 501 through the output end at the top of the first rectifying tower 3 after rectification of the first rectifying tower 3, the light component enters the light component recovery tower 502 through the output end at the bottom of the light component storage tank 501, the light component in the light component recovery tower 502 is conveyed into the synthesis tower 1 through the reflux pipeline 7 and the first reflux pump 10 for reference reaction, and the output end at the bottom of the light component recovery tower 502 intensively collects ethylamine in the light component recovery tower 502 into the material tank 503 for recycling;
and wherein the operating temperature of the evaporation separator 2 is 175 to 195 ℃, the pressure of the evaporation separator 2 is 0.04 to 0.08MPa (G), the operating temperature of the first rectifying column 3 is 185 to 205 ℃, the operating temperature of the top of the first rectifying column 3 is 75 to 85 ℃, and the top pressure of the first rectifying column 3 is 0.04 to 0.08MPa (G);
in addition, the operating temperature of the light component tank 501 is 20 to 40 ℃, the pressure of the light component tank 501 is 0.01 to 0.15MPa (G), the operating temperature of the light component recovery column 502 is 75 to 90 ℃, the operating temperature of the top of the light component recovery column 502 is 50 to 60 ℃, and the top pressure of the light component recovery column 502 is 0.01 to 0.04MPa (G).
2. Recovering residual liquid in the kettle: the heavy components in the first rectifying tower 3 enter the second rectifying tower 601 from the output end at the bottom of the first rectifying tower 3, after being rectified by the second rectifying tower 601, the finished products in the second rectifying tower 601 enter the finished product tank 4 from the top output end of the second rectifying tower 601, the heavy components in the second rectifying tower 601 enter the recovery pipeline 8 from the bottom output end of the second rectifying tower 601, whether the heavy components in the second rectifying tower 601 are conveyed back to the evaporation separator 2 or not is selected according to the reaction condition of the evaporation separator 2, and when the concentration of the reactant in the evaporation separator 2 reaches a set value, the heavy components in the second rectifying tower 601 are conveyed into the heavy component tank 602 through the three-way valve 9 and the second reflux pump 11;
and wherein the operating temperature of the second rectifying column 601 is 120-140 ℃, the operating temperature of the top of the second rectifying column 601 is 100-120 ℃, and the pressure of the top of the column is-80-98 KPa (G).
According to the utility model, the light components generated in an industrial device for producing N, N-diethyl formamide can be effectively recovered through the light component storage tank 501 and the light component recovery tower 502 in the recovery system, the kettle liquid of the synthesis tower 1 enters the evaporation separator 2, the evaporated gas phase enters the first rectifying tower 3, the gas phase light components generated at the top of the first rectifying tower 3 enter the light component storage tank 501 to form the materials of the light component storage tank 501, the materials of the light component storage tank 501 are pumped into the light component recovery tower 502, the light components extracted from the top of the light component recovery tower 502 can be returned to the synthesis tower 1 for recycling, the unusable light components extracted from the bottom of the light component recovery tower 502 enter the material tank 503 for storage, and the materials in the material tank 503 can be used for producing ethylamine, so that the diethyl unit consumption of DEF is indirectly reduced, and the production cost of DEF is reduced;
according to the utility model, heavy components generated in an industrial device for producing N, N-diethyl formamide can be effectively recycled through the heavy component tank 602 in the recycling system, residual liquid at the bottom of the second rectifying tower 601 is discharged into the heavy component tank 602 for storage, the heavy components are returned to the evaporation separator 2, and qualified products are rectified after passing through the first rectifying tower 3 and the second rectifying tower 601, so that the product yield of DEF is improved, and when the heavy component content reaches a certain concentration and cannot be recycled, the heavy component is returned to the heavy component tank 602.
The above description is only of the preferred embodiments of the present utility model; the scope of the utility model is not limited in this respect. Any person skilled in the art, within the technical scope of the present disclosure, may apply to the present utility model, and the technical solution and the improvement thereof are all covered by the protection scope of the present utility model.
Claims (5)
1. The utility model provides a recovery system of waste material in continuous production N, N-diethyl formamide industrialization device, includes synthetic tower (1) that is used for raw materials reaction, is used for preliminary separation synthetic evaporation separator (2), is used for extracting synthetic product's first rectifying column (3) and is used for collecting the finished product jar (4) of contract thing, the output of synthetic tower (1) with evaporation separator (2) input intercommunication, evaporation separator (2) output with first rectifying column (3) input intercommunication, the finished product output of first rectifying column (3) with finished product jar (4) input intercommunication, its characterized in that: the utility model discloses a distillation system, including first rectifying column (3), finished product jar (4), light component recovery mechanism (5) and heavy component recovery mechanism (6) are provided with between the finished product jar (4), and be provided with return line (7) on light component recovery mechanism (5), return line (7) output with top intercommunication in synthetic tower (1), be provided with on heavy component recovery mechanism (6) and retrieve pipeline (8), be provided with three-way valve (9) on retrieving pipeline (8), one of them output of three-way valve (9) with the input intercommunication of evaporation separator (2).
2. A system for recycling waste materials from an industrial plant for continuously producing N, N-diethylformamide according to claim 1, wherein: the light component recycling mechanism (5) comprises a light component storage tank (501) and a light component recycling tower (502), the input end of the light component storage tank (501) is communicated with the top output end of the first rectifying tower (3), the bottom output end of the light component storage tank (501) is communicated with the input end of the light component recycling tower (502), the top output end of the light component recycling tower (502) is communicated with the top in the synthesizing tower (1) through a return pipeline (7), and the bottom of the light component recycling tower (502) is connected with a material tank (503) for recycling.
3. A system for recycling waste materials in an industrial plant for continuously producing N, N-diethylformamide according to claim 2, wherein: the heavy component recycling mechanism (6) comprises a second rectifying tower (601) and a heavy component tank (602), wherein the input end of the second rectifying tower (601) is communicated with the bottom output end of the first rectifying tower (3), the top output end of the second rectifying tower (601) is communicated with the input end of the finished product tank (4), the bottom recycling end of the second rectifying tower (601) is communicated with the input end of the three-way valve (9), and the other output end of the three-way valve (9) is communicated with the input end of the heavy component tank (602).
4. A system for recycling waste materials from an industrial plant for continuously producing N, N-diethylformamide according to claim 1, wherein: the return pipeline (7) is provided with a first return pump (10), and the output end of the three-way valve (9) is provided with a second return pump (11).
5. A system for recycling waste materials from an industrial plant for continuously producing N, N-diethylformamide according to claim 3, wherein: the second rectifying tower (601) is a negative pressure tower.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222386653.0U CN219185851U (en) | 2022-09-05 | 2022-09-05 | Recovery system of waste material in continuous production N, N-diethyl formamide industrialization device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222386653.0U CN219185851U (en) | 2022-09-05 | 2022-09-05 | Recovery system of waste material in continuous production N, N-diethyl formamide industrialization device |
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| CN219185851U true CN219185851U (en) | 2023-06-16 |
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| CN202222386653.0U Active CN219185851U (en) | 2022-09-05 | 2022-09-05 | Recovery system of waste material in continuous production N, N-diethyl formamide industrialization device |
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| CN (1) | CN219185851U (en) |
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- 2022-09-05 CN CN202222386653.0U patent/CN219185851U/en active Active
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