CN204625515U - A kind of recovery system of caprolactam monomer - Google Patents
A kind of recovery system of caprolactam monomer Download PDFInfo
- Publication number
- CN204625515U CN204625515U CN201520234543.XU CN201520234543U CN204625515U CN 204625515 U CN204625515 U CN 204625515U CN 201520234543 U CN201520234543 U CN 201520234543U CN 204625515 U CN204625515 U CN 204625515U
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- rectifier unit
- monomer
- water eliminator
- effect
- recovery system
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Abstract
The utility model provides a kind of recovery system of caprolactam monomer, comprise extraction tank, triple-effect evaporation plant, low first body separator, depolymerizing reactor, pre-water eliminator, an effect rectifier unit, two effect rectifier unit, monomer receiving tanks, described triple-effect evaporation plant is connected with described extraction tank, described low first body separator respectively; Described low first body separator is connected with described depolymerizing reactor, described pre-water eliminator respectively; Described pre-water eliminator is imitated rectifier unit with described depolymerizing reactor, described respectively and is connected; Rectifier unit imitates rectifier unit with described one to described two effects respectively, described monomer receiving tank is connected; Described recovery system also comprises buffer reservoir, and described buffer reservoir imitates rectifier with described two respectively, described pre-water eliminator is connected.The utility model can reduce caprolactam monomer discharge, reduce pollution to environment; Cost can be saved; Recovery can be reduced and stop the car time.
Description
Technical field
The utility model relates to technical field of chemistry, particularly relates to a kind of recovery system of caprolactam monomer.
Background technology
The recovery system of existing caprolactam monomer, comprises extraction tank, triple-effect evaporation plant, low first body separator, depolymerizing reactor, pre-water eliminator, one effect rectifier unit, two effect rectifier units, monomer receiving tank, containing hexanolactam in extraction water, water, the impurity such as oligopolymer and dust, by extraction water successively through extraction tank, triple-effect evaporation plant, low first body separator, depolymerizing reactor, pre-water eliminator, one effect rectifier unit, two effect rectifying, monomer receiving tank, specifically have the removal process of the caprolactam monomer in extraction water: the extraction water in extraction tank is delivered in triple-effect evaporation plant and evaporates, then the extraction water after evaporation is delivered in low first body separator, be isolated according to each boiling point substance difference, due to water and caprolactam monomer boiling point lower, pre-water eliminator will be entered in vapour form from top to dewater, also have the higher oligopolymer of some boiling points will be transported to depolymerizing reactor by toothed gear pump, after oligopolymer being depolymerized to caprolactam monomer in depolymerizing reactor, enter pre-water eliminator as a vapor to dewater, then successively by an effect rectifier unit, the caprolactam monomer of waste residue with part after rectifier units distill, can be separated by two effects, thus is delivered in monomer receiving tank by caprolactam monomer and recycles, but also remains caprolactam monomer in waste residue.
By existing technique, reclaim parking deslagging and at least need parking three times every year, when reclaiming parking deslagging, the caprolactam monomer at every turn approximately having about seven tons is followed waste residue and is discharged together, causes the waste of resource and the pollution of environment.
Summary of the invention
The technical problems to be solved in the utility model, is the recovery system providing a kind of caprolactam monomer, and the caprolactam monomer in the waste residue of discharging when stopping is carried out recycling.
The utility model is achieved in that
A kind of recovery system of caprolactam monomer, comprise extraction tank, triple-effect evaporation plant, low first body separator, depolymerizing reactor, pre-water eliminator, an effect rectifier unit, two effect rectifier unit, monomer receiving tanks, described triple-effect evaporation plant is connected with described extraction tank, described low first body separator respectively; Described low first body separator is connected with described depolymerizing reactor, described pre-water eliminator respectively; Described pre-water eliminator is imitated rectifier unit with described depolymerizing reactor, described respectively and is connected; Rectifier unit imitates rectifier unit with described one to described two effects respectively, described monomer receiving tank is connected; Described recovery system also comprises buffer reservoir, and described buffer reservoir imitates rectifier with described two respectively, described pre-water eliminator is connected.
The utility model has the advantage of: the utility model can reduce caprolactam monomer discharge, reduce pollution to environment; Cost can be saved; Recovery can be reduced and stop the car time.
Accompanying drawing explanation
The utility model is further described with reference to the accompanying drawings in conjunction with the embodiments.
Fig. 1 is structural representation of the present utility model.
Embodiment
Refer to shown in Fig. 1, the recovery system of a kind of caprolactam monomer of the present utility model, comprise extraction tank 1, triple-effect evaporation plant 2, low first body separator 3, depolymerizing reactor 4, pre-water eliminator 5, effect rectifier unit 6, two effect rectifier unit 7, monomer receiving tank 8, buffer reservoir 9, described triple-effect evaporation plant 2 is connected with described extraction tank 1, described low first body separator 3 respectively; Described low first body separator 3 is connected with described depolymerizing reactor 4, described pre-water eliminator 5 respectively; Described pre-water eliminator 5 imitates rectifier unit 6 with described depolymerizing reactor 4, described respectively, described buffer reservoir 9 is connected; Described two effect rectifier units 7 imitate rectifier unit 6 respectively with described one, described monomer receiving tank 8, described buffer reservoir 9 are connected.
Principle of work of the present utility model is as follows:
The recovery system of the utility model caprolactam monomer is when carrying out caprolactam monomer and reclaiming, by toothed gear pump, extraction water is delivered to triple-effect evaporation plant 2 from extraction tank 1, after extraction water is evaporated in triple-effect evaporation plant 2, be delivered in low first body separator 3, be isolated according to each boiling point substance difference, due to water and caprolactam monomer boiling point lower, pre-water eliminator 5 will be entered in vapour form dewater from top, also have the higher oligopolymer of some boiling points will be transported to depolymerizing reactor 4 by toothed gear pump, after oligopolymer being depolymerized to caprolactam monomer in depolymerizing reactor 4, enter pre-water eliminator 5 as a vapor to dewater, then an effect rectifier unit 6 is delivered to successively, two effect rectifier units 7 carry out rectifying extraction, afterwards caprolactam monomer is integrated in monomer receiving tank 8, waste residue containing caprolactam monomer enters in buffer reservoir 9, after waste residue in buffer reservoir 9 be delivered to dewater in pre-water eliminator 5 by toothed gear pump when driving, again be delivered to an effect rectifier unit 6, two effect rectifier units 7 carry out rectifying extraction, caprolactam monomer in waste residue is recycled in monomer receiving tank 8, so just can reduce the discharge of caprolactam monomer, reduce the pollution to environment, save cost, recovery can be reduced and stop the car time.
Although the foregoing describe embodiment of the present utility model; but be familiar with those skilled in the art to be to be understood that; specific embodiment described by us is illustrative; instead of for the restriction to scope of the present utility model; those of ordinary skill in the art, in the modification of the equivalence done according to spirit of the present utility model and change, should be encompassed in scope that claim of the present utility model protects.
Claims (1)
1. the recovery system of a caprolactam monomer, comprise extraction tank, triple-effect evaporation plant, low first body separator, depolymerizing reactor, pre-water eliminator, an effect rectifier unit, two effect rectifier unit, monomer receiving tanks, described triple-effect evaporation plant is connected with described extraction tank, described low first body separator respectively; Described low first body separator is connected with described depolymerizing reactor, described pre-water eliminator respectively; Described pre-water eliminator is imitated rectifier unit with described depolymerizing reactor, described respectively and is connected; Rectifier unit imitates rectifier unit with described one to described two effects respectively, described monomer receiving tank is connected; It is characterized in that: described recovery system also comprises buffer reservoir, described buffer reservoir imitates rectifier with described two respectively, described pre-water eliminator is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520234543.XU CN204625515U (en) | 2015-04-17 | 2015-04-17 | A kind of recovery system of caprolactam monomer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520234543.XU CN204625515U (en) | 2015-04-17 | 2015-04-17 | A kind of recovery system of caprolactam monomer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204625515U true CN204625515U (en) | 2015-09-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520234543.XU Expired - Fee Related CN204625515U (en) | 2015-04-17 | 2015-04-17 | A kind of recovery system of caprolactam monomer |
Country Status (1)
| Country | Link |
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| CN (1) | CN204625515U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107400231A (en) * | 2017-09-04 | 2017-11-28 | 阳煤集团太原化工新材料有限公司 | A kind of method for reclaiming caprolactam and being used for PA6 polymerizations |
-
2015
- 2015-04-17 CN CN201520234543.XU patent/CN204625515U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107400231A (en) * | 2017-09-04 | 2017-11-28 | 阳煤集团太原化工新材料有限公司 | A kind of method for reclaiming caprolactam and being used for PA6 polymerizations |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150909 Termination date: 20170417 |