CN103495285B - Monomer recovery device for polyamide slice extraction water - Google Patents
Monomer recovery device for polyamide slice extraction water Download PDFInfo
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- CN103495285B CN103495285B CN201310440190.4A CN201310440190A CN103495285B CN 103495285 B CN103495285 B CN 103495285B CN 201310440190 A CN201310440190 A CN 201310440190A CN 103495285 B CN103495285 B CN 103495285B
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- concentration device
- effect concentration
- steam
- effect
- monomer recovery
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 18
- 239000000178 monomer Substances 0.000 title claims abstract description 17
- 238000011084 recovery Methods 0.000 title claims abstract description 17
- 238000000605 extraction Methods 0.000 title claims abstract description 10
- 239000004952 Polyamide Substances 0.000 title claims abstract description 9
- 229920002647 polyamide Polymers 0.000 title claims abstract description 9
- 239000000463 material Substances 0.000 claims abstract description 10
- 238000010438 heat treatment Methods 0.000 claims abstract description 6
- 230000000694 effects Effects 0.000 abstract description 9
- 238000001704 evaporation Methods 0.000 abstract description 8
- 230000008020 evaporation Effects 0.000 abstract description 8
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000004134 energy conservation Methods 0.000 abstract 1
- 238000007906 compression Methods 0.000 description 5
- 230000001502 supplementing effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Landscapes
- Heat Treatment Of Water, Waste Water Or Sewage (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
The invention discloses a monomer recovery device for polyamide slice extraction water. The monomer recovery device is characterized by comprising a four-effect concentration device, wherein the four-effect concentration device is divided into a first-effect concentration device, a second-effect concentration device, a third-effect concentration device and a fourth-effect concentration device along the extraction water flow direction respectively; each concentration device consists of a material heating evaporator and a steam-water separator respectively. The monomer recovery device has the beneficial effects that the steam evaporation is provided by using the four-effect concentration device, the steam utilization rate is higher, the evaporation of steams between the effects is in balance, the material concentration is greatly improved and the purpose of energy conservation is favorably reached.
Description
Technical Field
The invention belongs to the field of chemical equipment, and particularly relates to a monomer recovery device for polyamide slice extraction water.
Background
At present, a monomer recovery device for polyamide slice extraction water generally adopts a triple-effect concentration device, when the material yield is high, the triple-effect concentration device is used alone, the triple-effect steam evaporation capacity is insufficient, the steam utilization efficiency is low, the steam evaporation capacity between the effects is not easy to balance, and the material concentration cannot be improved.
Disclosure of Invention
The present invention has been made to overcome the problems of the prior art, and an object of the present invention is to provide a monomer recovery apparatus for recovering a polyamide chip extract water having a high monomer recovery concentration.
In order to achieve the purpose of the invention, the invention adopts the technical scheme that:
a monomer recovery device for polyamide slice extraction water comprises a four-effect concentration device, wherein the four-effect concentration device comprises a first-effect concentration device, a second-effect concentration device, a third-effect concentration device and a four-effect concentration device according to the flow direction of extraction water, and each concentration device consists of a material heating evaporator and a steam-water separator.
The invention has the beneficial effects that: the four-effect concentration device is adopted to provide the steam evaporation capacity, the steam utilization rate is higher, the steam evaporation capacity between the effects is balanced, the material concentration is greatly improved, and the energy-saving purpose is favorably realized.
In order to further reduce the raw steam consumption of the evaporator and achieve the aim of energy saving, and the monomer recovery concentration is high, the invention combines a mechanical steam compression process on the basis of a four-effect concentration device, and adopts the following three different modes in combination with the mechanical steam compression process:
the device comprises a mechanical vapor compressor, wherein an air inlet of the mechanical vapor compressor is communicated with a two-effect concentration device and compresses vapor of the two-effect concentration device to generate secondary vapor, and an air outlet of the mechanical vapor compressor is communicated with a one-effect concentration device and provides the secondary vapor for the one-effect concentration device.
And the gas outlet of the mechanical vapor compressor is communicated with the first-effect concentration device and supplies the secondary vapor to the first-effect concentration device.
And thirdly, the gas outlet of the second mechanical vapor compressor is communicated with the first effect concentration device, and the secondary vapor is provided for the first effect concentration device.
After the four-effect concentration device is combined with a mechanical steam compression process, the mechanical steam recompression technology is adopted, the steam consumption of each ton of products can be effectively reduced, the concentration steam consumption of each unit of product can be saved by more than 90 percent, for example, the steam consumption is reduced to 8800kg/hr to 700kg/hr, the energy-saving and emission-reducing targets are favorably realized, and the monomer recovery concentration is high.
Drawings
FIG. 1 is a schematic view of the structure of a monomer recovery apparatus according to the present invention.
Wherein,
11: a first effect concentrating device; 12: a two-effect concentration device; 13: a triple effect concentration device; 14: a four-effect concentration device;
21. a first mechanical vapor compressor; 22: a second mechanical vapor compressor.
Detailed Description
In order to explain technical contents, structural features, and objects and effects of the present invention in detail, the following detailed description is given with reference to the accompanying drawings in conjunction with the embodiments.
Referring to fig. 1, as shown in the figure, the monomer recovery device for polyamide chip extract water according to the present invention includes a four-effect concentration device, which includes a first-effect concentration device 11, a second-effect concentration device 12, a third-effect concentration device 13 and a four-effect concentration device 14, respectively, according to the flow direction of the extract water, and each concentration device is composed of a material heating evaporator and a steam-water separator. Each concentration device can be directly heated by a material heating evaporator, or the evaporator of the single-effect concentration device can be directly heated by raw steam, and the heating temperature of the concentration device is automatically controlled by a temperature automatic control system. The evaporators of the second, third and fourth concentration devices are heated by secondary steam of the first and second effect steam-water separators. Adopt four-effect enrichment facility to provide the steam evaporation capacity, steam utilization ratio is higher, and imitates the steam evaporation capacity balance within a definite time, and material concentration improves greatly.
In order to further reduce the raw steam consumption of the evaporator and achieve the aim of energy saving, and the monomer recovery concentration is high, the invention combines a mechanical steam compression process on the basis of a four-effect concentration device, and adopts the following three different modes in combination with the mechanical steam compression process:
the optimal mode is that the system comprises two mechanical vapor compressors, namely a first mechanical vapor compressor 21 and a second mechanical vapor compressor 22, wherein an air inlet of the first mechanical vapor compressor 21 is communicated with the two-effect concentration device 12 and the three-effect concentration device 13, vapor of the two-effect concentration device 12 and the three-effect concentration device 13 is compressed to generate secondary vapor, an air outlet of the first mechanical vapor compressor 21 is communicated with an air inlet of the second mechanical vapor compressor 22, and an air outlet of the second mechanical vapor compressor 22 is communicated with the one-effect concentration device 11 and provides the secondary vapor to the one-effect concentration device 11. The secondary steam generated by the two-effect and three-effect concentration devices is compressed by the high-energy-efficiency steam compressor, the enthalpy of the secondary steam is improved, the secondary steam with the improved enthalpy enters the one-effect concentration device to be recycled as a heat source to replace most of the primary steam, and the primary steam is only used for supplementing heat loss and supplementing heat enthalpy required by feed and discharge temperature difference, so that the consumption of the primary steam of the evaporator is greatly reduced, the energy-saving purpose is achieved, and the monomer recovery concentration is high.
The other two modes are one mode, the device comprises a mechanical vapor compressor, wherein an air inlet of the mechanical vapor compressor is communicated with the two-effect concentration device, vapor of the two-effect concentration device is compressed to generate secondary vapor, and an air inlet and an air outlet of the mechanical vapor compressor are communicated with the one-effect concentration device and provide the secondary vapor for the one-effect concentration device. And the air inlet and the air outlet of the mechanical steam compressor are communicated with the first-effect concentration device and provide the secondary steam for the first-effect concentration device.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes performed by the present specification and drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (1)
1. A monomer recovery device for polyamide slice extraction water is characterized by comprising a four-effect concentration device, wherein the four-effect concentration device comprises a first-effect concentration device, a second-effect concentration device, a third-effect concentration device and a four-effect concentration device according to the flow direction of the extraction water, and each concentration device consists of a material heating evaporator and a steam-water separator;
the system further comprises two mechanical vapor compressors which are respectively a first mechanical vapor compressor and a second mechanical vapor compressor, wherein an air inlet of the first mechanical vapor compressor is communicated with the two-effect concentration device and the three-correction concentration device, vapor of the two-effect concentration device and vapor of the three-correction concentration device are compressed to generate secondary vapor, an air outlet of the first mechanical vapor compressor is communicated with an air inlet of the second mechanical vapor compressor, and an air outlet of the second mechanical vapor compressor is communicated with the one-effect concentration device and supplies the secondary vapor to the one-effect concentration device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201310440190.4A CN103495285B (en) | 2013-09-25 | 2013-09-25 | Monomer recovery device for polyamide slice extraction water |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310440190.4A CN103495285B (en) | 2013-09-25 | 2013-09-25 | Monomer recovery device for polyamide slice extraction water |
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| Publication Number | Publication Date |
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| CN103495285A CN103495285A (en) | 2014-01-08 |
| CN103495285B true CN103495285B (en) | 2015-07-22 |
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| CN201310440190.4A Active CN103495285B (en) | 2013-09-25 | 2013-09-25 | Monomer recovery device for polyamide slice extraction water |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104645646A (en) * | 2015-02-15 | 2015-05-27 | 重庆奥钝费博医药机械设备有限公司 | Total heat and latent heat recovery type multi-effect vacuum evaporation and concentration device |
| CN105498260A (en) * | 2015-12-01 | 2016-04-20 | 北京三联虹普新合纤技术服务股份有限公司 | High-efficiency and energy-saving caprolactam recovery technology |
| CN111763314A (en) * | 2020-08-17 | 2020-10-13 | 温州邦鹿化工有限公司 | High-viscosity high-strength nylon-666 copolymerization polymerization continuous polymerization device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1415395A (en) * | 2002-11-14 | 2003-05-07 | 华东理工大学 | Technique of combined concentration by evaporation with heat pump being provided |
| CN201632081U (en) * | 2010-02-08 | 2010-11-17 | 张国林 | Multi-effect vapor recompression vaporization energy-saving system |
| CN202506148U (en) * | 2012-03-11 | 2012-10-31 | 甘肃蓝科石化高新装备股份有限公司 | Tubular evaporator device with mechanical vapor compression machine |
| CN102989181A (en) * | 2012-12-17 | 2013-03-27 | 李锦龙 | Compound type monomer multi-effect steam mechanical recompression evaporator |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59136185A (en) * | 1983-01-22 | 1984-08-04 | Ishikawajima Harima Heavy Ind Co Ltd | Condenser for water desalting device |
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- 2013-09-25 CN CN201310440190.4A patent/CN103495285B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1415395A (en) * | 2002-11-14 | 2003-05-07 | 华东理工大学 | Technique of combined concentration by evaporation with heat pump being provided |
| CN201632081U (en) * | 2010-02-08 | 2010-11-17 | 张国林 | Multi-effect vapor recompression vaporization energy-saving system |
| CN202506148U (en) * | 2012-03-11 | 2012-10-31 | 甘肃蓝科石化高新装备股份有限公司 | Tubular evaporator device with mechanical vapor compression machine |
| CN102989181A (en) * | 2012-12-17 | 2013-03-27 | 李锦龙 | Compound type monomer multi-effect steam mechanical recompression evaporator |
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| CN103495285A (en) | 2014-01-08 |
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Address after: 350209 Airport Industrial Zone, Changle District, Fuzhou City, Fujian Province (Mashan District, Hunan town) Patentee after: Fujian Yongrong Jinjiang Co., Ltd Address before: 350209 Zhang Xing Industrial Zone, Changle, Fujian, Fuzhou Patentee before: FUJIAN JINJIANG TECHNOLOGY Co.,Ltd. |