CN206121197U - A MVR vapor recompression device for PA6 polymerization monomer is retrieved - Google Patents
A MVR vapor recompression device for PA6 polymerization monomer is retrieved Download PDFInfo
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- CN206121197U CN206121197U CN201621057271.1U CN201621057271U CN206121197U CN 206121197 U CN206121197 U CN 206121197U CN 201621057271 U CN201621057271 U CN 201621057271U CN 206121197 U CN206121197 U CN 206121197U
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Abstract
The utility model relates to a MVR vapor recompression device for PA6 polymerization monomer is retrieved, it includes that one imitates heater, double -effect heater and triple effect heater, a material export and a material import of imitating the separator of imitating the heater links to each other, double -effect heater's material export and second -effect separator's material import link to each other, the material export of triple effect heater and the material import of triple effect separator link to each other, the matter entrance of an effect heater and the material export of pre -heater link to each other. The utility model discloses the energy consumption is low, the running cost is low, the environmental protection reduces discharging, it is convenient to maintain.
Description
Technical field
This utility model is related to a kind of evaporating separation device, and in particular to a kind of MVR steam recompression devices.
Background technology
Nylon 6（PA6）It is main by the polymerization of caprolactam producing, it is in the production technology of domestic and international PA6 polymerizations, big absolutely
With water extracted the step for is contained in most production technologies all, extract is containing about 10% caprolactam monomer and oligomer.
At present, MONOMER RECOVERY traditional in industry realized mostly using triple effect evaporation technique, i.e., containing about 10% monomer
Extraction water and oligomer enter continuous heater through filter, and most of water is removed in a three-level triple effect recirculation heater
Fall, fall the moisture of about a quarter per one-level Jing evaporative removal, first order evaporation is heated by middle pressure evaporation, evaporation out
Thing is used for heating second level heater, has two grades of evaporants to be out used to heat the third level successively.From afterbody out
Steam clean in gas scrubbing tower, to save caprolactam loss, steam condensate be then sent in fresh water (FW) basin to
Extraction workshop section reuses, concentrated extract（70~80%）Into in the concentration liquid storage tank for having heated.Steam in whole triple effect
In the system of sending out, all of thermal source is provided by the evaporation of middle pressure, and according to statistics, MONOMER RECOVERY often evaporates 1 ton of water, the consumption of its steam
About 0.5 ton of amount.Produce with substantial amounts of steam condensate (SC) simultaneously, the economic effect of enterprise is necessarily given in the process of the partial condensation water
Benefit brings inevitably impact.
The content of the invention
Goal of the invention：The purpose of this utility model is to overcome deficiency of the prior art, there is provided a kind of energy consumption is low, fortune
Row low cost, environmental emission reduction, the easy to maintenance MVR steam recompression devices reclaimed for PA6 polymerized monomers.
Technical scheme：It is in order to solve above-mentioned technical problem, described in the utility model a kind of for the recovery of PA6 polymerized monomers
MVR steam recompression devices, it includes an effect heater, two effect heaters and triple effect heater, the effect heater
The material inlet of material outlet and an effect separator is connected, the material of the material outlet of the two effects heater and two effect separators
Import is connected, and the material outlet of the triple effect heater is connected with the material inlet of triple effect separator, the effect heater
Material inlet is connected with the material outlet of preheater, and the material outlet of the liquid outlet of the effect heater and an effect separator leads to
The material inlet that pump I is crossed with the material inlet and two effect heaters of an effect heater is connected, the liquid outlet of the two effects heater
Pass through the material inlet phase of pump II and the material inlets and triple effect heater of two effect heaters with the material outlet of two effect separators
Even, the material outlet of the liquid outlet and triple effect separator of the triple effect heater is by pump III and the material inlet of triple effect heater
It is connected with concentrated solution collection system, the steam inlet of the steam (vapor) outlet of the effect separator and two effect heaters is connected, described
The steam (vapor) outlet of two effect separators is connected with the steam inlet of triple effect heater, the steam (vapor) outlet and machinery of the triple effect separator
The steam inlet of vapor recompression device is connected, and the steam of the steam (vapor) outlet of the function of mechanical steam recompression device and an effect heater enters
Mouth is connected, and the effect heater, two effect heaters are connected with the steam (vapor) outlet of triple effect heater with the thermal source inlet of preheater.
The function of mechanical steam recompression device is frequency-changeable compressor.
Beneficial effect：Compared with prior art, its remarkable advantage is this utility model：This utility model overall structure is arranged
Rationally, compression ratio is high, and the thermal efficiency is high, and the energy consumption for evaporating a clear water is about 1/6 to the 1/5 of conventional heater, and energy consumption is low, by
Low in energy consumption, corresponding whole heater operating cost is greatly reduced, only 1/3 to the 1/2 of conventional heater, and compressor is adopted
VFC, in actual use, can be directed to the situation at scene, carry out automatically VFC, due to heater again simultaneously
It is the condenser of indirect steam, so not only not needing other condenser, and without the need for recirculated cooling water, saves public work
The expense of journey.
Description of the drawings
Fig. 1 is structural representation of the present utility model.
Specific embodiment
With reference to the accompanying drawings and examples this utility model is further described.
As shown in figure 1, a kind of MVR steam recompression devices reclaimed for PA6 polymerized monomers described in the utility model,
It includes the effect heater 2 of an effect heater 1, two and triple effect heater 3, the material outlet and an effect point of the effect heater 1
Material inlet from device 4 is connected, and the material inlet of the material outlet of the two effects heater 2 and two effect separators 5 is connected, described
The material outlet of triple effect heater 3 is connected with the material inlet of triple effect separator 6, it is described one effect heater 1 material inlet and
The material outlet of preheater 7 is connected, and the material outlet of the liquid outlet of the effect heater 1 and an effect separator 4 passes through pump I 8
With one effect heater 1 material inlet and two effect heaters 2 material inlets be connected, it is described two effect heater 2 liquid outlet with
The material outlet of two effect separators 5 is by pump II 9 and the material inlet of the material inlet and triple effect heater 3 of two effect heaters 2
It is connected, the material outlet of the liquid outlet and triple effect separator 6 of the triple effect heater 3 is by pump III 10 and triple effect heater 3
Material inlet is connected with concentrated solution collection system 11, and the steam of the steam (vapor) outlet of the effect separator 4 and two effect heaters 2 enters
Mouth is connected, and the steam (vapor) outlets of the two effects separator 5 are connected with the steam inlet of triple effect heater 3, the triple effect separator 6
Steam (vapor) outlet is connected with the steam inlet of function of mechanical steam recompression device 12, the steam (vapor) outlet of the function of mechanical steam recompression device 12 and
The steam inlet of one effect heater 1 is connected, the steam (vapor) outlet of effect heater 1, the two effect heater 2 and triple effect heater 3
It is connected with the thermal source inlet of preheater 7；The function of mechanical steam recompression device 12 is frequency-changeable compressor.This utility model overall structure
Arrange reasonable, compression ratio is high, the thermal efficiency is high, the energy consumption for evaporating a clear water is about 1/6 to the 1/5 of conventional heater, energy consumption
Low, as energy consumption is low, corresponding whole heater operating cost is greatly reduced, only 1/3 to the 1/2 of conventional heater, compression
Machine adopts VFC, in actual use, can be directed to the situation at scene, carry out automatically VFC, due to heater
It is the condenser of indirect steam simultaneously again, so not only not needing other condenser, and without the need for recirculated cooling water, saves
The expense of public work.
This utility model provides a kind of thinking and method, and the method and approach for implementing the technical scheme is a lot, with
Only it is preferred implementation of the present utility model described in upper, it is noted that for those skilled in the art,
On the premise of without departing from this utility model principle, some improvements and modifications can also be made, these improvements and modifications should also be regarded
For protection domain of the present utility model, in the present embodiment, clearly each ingredient not can use prior art to be realized.
Claims (2)
1. it is a kind of for PA6 polymerized monomers reclaim MVR steam recompression devices, it is characterised in that：It includes an effect heater
（1）, two effect heaters（2）With triple effect heater（3）, the effect heater（1）Material outlet and one effect separator（4）'s
Material inlet is connected, the two effects heater（2）Material outlet and two effect separators（5）Material inlet be connected, described three
Effect heater（3）Material outlet and triple effect separator（6）Material inlet be connected, it is described one effect heater（1）Material enter
Mouth and preheater（7）Material outlet be connected, it is described one effect heater（1）Liquid outlet and one effect separator（4）Material go out
Mouth passes through pump I（8）With an effect heater（1）Material inlet and two effect heaters（2）Material inlet be connected, it is described two effect plus
Hot device（2）Liquid outlet and two effect separators（5）Material outlet pass through pump II（9）With two effect heaters（2）Material inlet
With triple effect heater（3）Material inlet be connected, the triple effect heater（3）Liquid outlet and triple effect separator（6）Material
Outlet is by pump III（10）With triple effect heater（3）Material inlet and concentrated solution collection system（11）It is connected, an effect point
From device（4）Steam (vapor) outlet and two effect heaters（2）Steam inlet be connected, it is described two effect separator（5）Steam (vapor) outlet and
Triple effect heater（3）Steam inlet be connected, the triple effect separator（6）Steam (vapor) outlet and function of mechanical steam recompression device（12）
Steam inlet be connected, the function of mechanical steam recompression device（12）Steam (vapor) outlet and one effect heater（1）Steam inlet phase
Even, the effect heater（1）, two effect heaters（2）With triple effect heater（3）Steam (vapor) outlet and preheater（7）Thermal source
Entrance is connected.
2. it is according to claim 1 for PA6 polymerized monomers reclaim MVR steam recompression devices, it is characterised in that：Institute
State function of mechanical steam recompression device（12）For frequency-changeable compressor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621057271.1U CN206121197U (en) | 2016-09-18 | 2016-09-18 | A MVR vapor recompression device for PA6 polymerization monomer is retrieved |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621057271.1U CN206121197U (en) | 2016-09-18 | 2016-09-18 | A MVR vapor recompression device for PA6 polymerization monomer is retrieved |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206121197U true CN206121197U (en) | 2017-04-26 |
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ID=58570685
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621057271.1U Active CN206121197U (en) | 2016-09-18 | 2016-09-18 | A MVR vapor recompression device for PA6 polymerization monomer is retrieved |
Country Status (1)
| Country | Link |
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| CN (1) | CN206121197U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112274953A (en) * | 2020-10-21 | 2021-01-29 | 东莞市德鸿肠衣有限公司 | Fractional concentration device of heparin sodium eluent |
-
2016
- 2016-09-18 CN CN201621057271.1U patent/CN206121197U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112274953A (en) * | 2020-10-21 | 2021-01-29 | 东莞市德鸿肠衣有限公司 | Fractional concentration device of heparin sodium eluent |
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