CN214436598U - Cyclohexanone rectification vacuum apparatus - Google Patents
Cyclohexanone rectification vacuum apparatus Download PDFInfo
- Publication number
- CN214436598U CN214436598U CN202022640719.5U CN202022640719U CN214436598U CN 214436598 U CN214436598 U CN 214436598U CN 202022640719 U CN202022640719 U CN 202022640719U CN 214436598 U CN214436598 U CN 214436598U
- Authority
- CN
- China
- Prior art keywords
- pump
- roots
- vacuum
- outlet
- cyclohexanone
- Prior art date
- 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.)
- Active
Links
Images
Landscapes
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
The utility model discloses a cyclohexanone rectification vacuum device, which comprises a roots pump, wherein the roots pump is sequentially connected with a dry pump, an outlet condenser and a vapor-liquid separator, and the vapor-liquid separator is respectively provided with a gas outlet and a collected condensate outlet; the dry pump adopts one-level or second grade roots to add claw pump vacuum unit, can retrieve most recycle's medium through the simple and easy recovery unit in export to can realize organic solvent's recovery through the export condenser, have considerable economic benefits, this device has the energy consumption low, does not newly-increase sewage, retrieves the active ingredient, reduces pollutant concentration in the tail gas, for follow-up tail gas treatment lightens the characteristics of burden.
Description
Technical Field
The utility model relates to a cyclohexanone rectification vacuum apparatus belongs to organic chemical industry raw materials processing technology field.
Background
Cyclohexanone is an important organic chemical raw material, is a main intermediate for manufacturing caprolactam, adipic acid and the like, is mainly used for synthesizing nylon 6, nylon 66 and other resins, is used as a high-grade solvent with excellent performance, and is widely applied to the industries of coatings, printing ink, pharmacy, pesticides, adhesives, photosensitive materials and the like. From the current market structure, adipic acid and caprolactam are the most main downstream of the adipic acid and caprolactam, and the sum of the adipic acid and the caprolactam accounts for about 86% of the consumption of cyclohexanone in China, and the adipic acid and the caprolactam accounts for about 9% of the consumption of cyclohexanone in the solvent field.
At present, a multistage steam injection vacuum system or a multistage injection and liquid ring vacuum pump system is generally adopted in a cyclohexanone vacuum system, the steam injection energy consumption is high, a steam injector is used as traditional vacuum obtaining equipment, the efficiency is low, the steam consumption is high, steam for injection needs to be condensed by circulating water, and the energy consumption is high; the liquid ring pump has high energy consumption and low efficiency; after the steam ejector or the steam is condensed, organic matters such as cyclohexanone, cyclohexanol and the like are dissolved, and high-concentration organic wastewater treatment is formed; if a multistage steam ejector and a liquid ring vacuum pump system are adopted, the working liquid discharged by the liquid ring vacuum pump is high-concentration organic wastewater and waste water; the waste water generated by the steam ejector or the liquid ring vacuum pump contains cyclohexanone, cyclohexanol and other effective components with certain concentration, if the waste water is not recycled, the waste of resources is caused, and the burden of sewage treatment is increased; if the active ingredients are recovered, a large amount of water is evaporated by means of steam stripping, and the energy consumption is very high.
SUMMERY OF THE UTILITY MODEL
The utility model provides a cyclohexanone rectification vacuum apparatus is used for overcoming among the prior art multistage steam injection vacuum system or multistage injection + liquid ring vacuum pump system energy consumption height, the defect of emission pollution.
In order to solve the technical problem, the utility model provides a following technical scheme:
the utility model discloses a cyclohexanone rectification vacuum apparatus, including the lobe pump, the lobe pump has connected gradually dry-type pump, export condenser and vapour and liquid separator, be equipped with gas outlet and collection lime set export on the vapour and liquid separator respectively.
Furthermore, the dry pump is a screw pump or a claw pump.
Furthermore, the roots pump is a one-stage roots vacuum pump or a two-stage roots vacuum pump.
Furthermore, an intermediate cooler is additionally arranged between the roots pump and the dry pump.
Further, the dry pump is preferably a claw vacuum pump.
The utility model discloses the beneficial effect who reaches is: the device has the characteristics of low energy consumption, no new sewage, effective component recovery, reduction of pollutant concentration in tail gas and reduction of burden for subsequent tail gas treatment;
the dry pump adopts one-level or two-level roots and claw pump vacuum units, can recover most recyclable media through a recovery device with a simple outlet, can realize the recovery of organic solvent through an outlet condenser, and has considerable economic benefit.
Drawings
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic view of the overall structure of the first embodiment of the present invention;
fig. 2 is a schematic view of the overall structure of the second embodiment of the present invention.
In the figure: 1. a roots pump; 2. a dry pump; 3. an outlet condenser; 4. a vapor-liquid separator; 5. and an intermediate stage cooler.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are presented herein only to illustrate and explain the present invention, and not to limit the present invention.
Example 1
As shown in fig. 1-2, a cyclohexanone rectification vacuum device comprises a roots pump 1, wherein the roots pump 1 is sequentially connected with a dry pump 2, an outlet condenser 3 and a vapor-liquid separator 4, and the vapor-liquid separator 4 is respectively provided with a gas outlet and a collected condensate outlet.
The dry pump 2 is a screw pump or a claw pump, preferably a claw vacuum pump.
The roots pump 1 is a one-stage roots vacuum pump or a two-stage roots vacuum pump.
And an inter-stage cooler 5 is additionally arranged between the roots pump 1 and the dry pump 2.
Tail gas pumped out from a condenser at the top of the existing rectifying tower passes through a Roots pump 1, the tail gas enters a dry pump 2 after being cooled by an interstage cooler 5, and the tail gas at the outlet of the dry pump 2 is condensed by an outlet condenser 3 and then is discharged after being condensed by a vapor-liquid separator 4. The roots pump 1 can be a one-stage roots vacuum pump or a two-stage roots vacuum pump. The Roots pump 1 can condense the tail gas to recover part of the organic solvent through the interstage cooler 5 according to the process conditions.
The dry pump 2 may be a screw pump or a claw pump.
Energy consumption analysis meter
According to the comparative analysis of the energy consumption of two different vacuum systems, the energy consumption of the two-stage steam injection vacuum system is very high.
The dry vacuum adopts a two-stage roots and claw pump vacuum unit, most recyclable media can be recycled through a recycling device with a simple outlet, and the dry vacuum has considerable economic benefits.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (4)
1. A cyclohexanone rectification vacuum device is characterized by comprising a Roots pump, wherein the Roots pump is sequentially connected with a dry pump, an outlet condenser and a vapor-liquid separator;
and the gas-liquid separator is respectively provided with a gas outlet and a collected condensate outlet.
2. The cyclohexanone distillation vacuum device according to claim 1, wherein the dry pump is a screw pump or a claw pump.
3. The cyclohexanone rectification vacuum device as claimed in claim 1, wherein the roots pump is selected from a one-stage roots vacuum pump or a two-stage roots vacuum pump.
4. The cyclohexanone rectification vacuum device as claimed in claim 1, wherein an inter-stage cooler is added between the roots pump and the dry pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022640719.5U CN214436598U (en) | 2020-11-16 | 2020-11-16 | Cyclohexanone rectification vacuum apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022640719.5U CN214436598U (en) | 2020-11-16 | 2020-11-16 | Cyclohexanone rectification vacuum apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214436598U true CN214436598U (en) | 2021-10-22 |
Family
ID=78182692
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022640719.5U Active CN214436598U (en) | 2020-11-16 | 2020-11-16 | Cyclohexanone rectification vacuum apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214436598U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114344930A (en) * | 2021-12-01 | 2022-04-15 | 湖北三宁化工股份有限公司 | Caprolactam distillation vacuum-pumping method and device thereof |
-
2020
- 2020-11-16 CN CN202022640719.5U patent/CN214436598U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114344930A (en) * | 2021-12-01 | 2022-04-15 | 湖北三宁化工股份有限公司 | Caprolactam distillation vacuum-pumping method and device thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103224260B (en) | Wastewater treatment and recovery method | |
| CN111302899A (en) | Device and method for recovering ammonia and tert-butyl alcohol in cyclohexanone ammoximation production process | |
| CN214436598U (en) | Cyclohexanone rectification vacuum apparatus | |
| CN111847564A (en) | Semi-coke wastewater extraction dephenolization and negative pressure type extractant recovery method and device | |
| CN110252088B (en) | Recovery system of aniline in tail gas | |
| CN111138246B (en) | Energy-saving process for recovering tert-butanol through ammoximation reaction | |
| CN106831526A (en) | Reclaim, purify the device and method of N methyl pyrrolidones | |
| CN211078532U (en) | Caprolactam waste water recovery pretreatment systems | |
| CN104860465A (en) | Double-tower catalysis thermal-coupling reflux deamination method and deamination device thereof | |
| CN218834066U (en) | Novel separation system for acrylic acid device | |
| CN216890175U (en) | Energy-saving DMF waste water recovery system | |
| CN105600857A (en) | Degassing treatment technology of alkaline wastewater in viscose fiber production | |
| CN212451255U (en) | Methylamine/ethylamine recovery processing system | |
| CN212102637U (en) | Ammonia and tert-butyl alcohol recovery device in cyclohexanone ammoximation production process | |
| CN114516701A (en) | Method and device for treating ammonia-containing wastewater | |
| CN113813625A (en) | Device and method for recovering light alcohol by combining MVR with recovery tower | |
| CN220110433U (en) | Polyester rectification vacuum system | |
| CN216703401U (en) | High-efficient composite set that retrieves of solvent chlorobenzene in naphthol production | |
| CN111635348A (en) | Application and system of screw vacuum pump in caprolactam refining process production | |
| CN203487061U (en) | Methanol recycling device for biodiesel production process | |
| CN213506674U (en) | Novel synthetic leather waste water treatment heat pump rectification system | |
| CN101519230A (en) | Highly enriched formaldehyde solution preparation system and preparation method | |
| CN214763389U (en) | Rectification energy-saving device in cyclohexanone oxime production process by cyclohexanone ammoximation method | |
| CN111608910B (en) | Application and system of Roots liquid ring vacuum pump unit in ammoximation process production | |
| CN213101457U (en) | Recovery unit of active ingredient in waste gas |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |