CN100577902C - Cascade flash process for polyster staple post processing - Google Patents
Cascade flash process for polyster staple post processing Download PDFInfo
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- CN100577902C CN100577902C CN200710036564A CN200710036564A CN100577902C CN 100577902 C CN100577902 C CN 100577902C CN 200710036564 A CN200710036564 A CN 200710036564A CN 200710036564 A CN200710036564 A CN 200710036564A CN 100577902 C CN100577902 C CN 100577902C
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
- Y02P70/62—Manufacturing or production processes characterised by the final manufactured product related technologies for production or treatment of textile or flexible materials or products thereof, including footwear
Abstract
The present invention relates to a polyester staple downstream processing production process, especially it relates to a kind of energy-saving type flexibilized polyester staple downstream processing preparation process. It is characterized by adopting cascade flashing process to make production. It utilizes the waste heat of condensate of medium-pressure 1.6-2.4 MPa steam produced in tension heat setting fourth-zone work-shop section and makes the above-mentioned waste heat undergo the process of four-stage flashing treatment so as to produce secondary steam with various pressures required for said production process and make said secondary steam be substituted for partial first steam.
Description
(1) technical field
The present invention relates to producing process behind the polyester staple fiber, relate in particular to processing and preparing technology behind a kind of polyester staple fiber of energy-saving flexibility.
(2) background technology
The wearability of polyster fibre is good, applied range, and its Volume and Growth speed is all far above other chemical fibre kinds.The energy consumption of steam accounts for fiber manufacturing cost about more than 1/3rd in the polyester staple fiber production, processing middle pressure steam 1.6～2.4MPa uses two, three, four districts of point at tension-setting machine behind the polyester staple fiber, its nervous heat setting process is the workshop section that mainly consumes middle pressure steam, accounts for more than 70% of whole polyester staple fiber production technology steam consumption.
At present, domestic most of polyester staple fiber factory mostly utilizes the steam waste heat of regional steam power plant pipe network, to reduce the discharge capacity of flue dust in the regional atmosphere, the condensed water maximum temperature that produces in the processing behind the staple fibre can reach more than 200 ℃, if send power plant back to, distance is generally far away, must dispose drug delivery pump system, carries cost higher.If adopt the in line sewers of going into, too high temperature not only can be damaged mole drain, and a large amount of steam can pollute working environment.
Each district's steam inlet of existing tension-setting machine is middle pressure steam 1.6～2.4MPa, and outlet adds one group of steam trap, all inserts flash tank then, produces the condensed water of 0.3MPa steam and 0.3MPa after the flash distillation.But use the 0.3MPa quantity of steam less than the secondary 0.3MPa quantity of steam that produces behind the polyester staple fiber in the processing, the emptying in vain of a large amount of steam can not be utilized fully, causes energy waste.
(3) summary of the invention
The object of the present invention is to provide a kind of cascade flash process of processing behind the polyester staple fiber of being used for, this process using is used four flash tank tandems, make steam by classification flash distillation use repeatedly, thereby improved the service efficiency of steam, and saved the energy.
The present invention is achieved in that a kind of cascade flash process of processing behind the polyester staple fiber of being used for, it is characterized in that: middle pressure steam enters nervous HEAT SETTING the 4th district behind the pipeline distributor, and the steam water interface of nervous HEAT SETTING the 4th district output enters the 4th flash tank; Enter nervous HEAT SETTING the 3rd district after the middle pressure steam that the steam of the 4th flash tank output and pipeline distributor come is mixed, the steam water interface of nervous HEAT SETTING the 3rd district output enters the 3rd flash tank; Enter nervous HEAT SETTING second district after the middle pressure steam that the steam of the 3rd flash tank output and pipeline distributor come is mixed, steam water interface that nervous HEAT SETTING second district exports and the 4th flash tank condensed water and the condensed water exported behind steam trap of the 3rd flash tank through exporting behind the steam trap mixes and enters second flash tank; Enter nervous HEAT SETTING first district after the low pressure steam of the steam of second flash tank output and outer tube input is mixed, mixed first flash tank that enters of the condensed water that the steam water interface of nervous HEAT SETTING first district output and second flash tank are exported behind steam trap; The steam of first flash tank output is incorporated the total pipe network of low-pressure steam into, and the condensed water that first flash tank is exported behind steam trap enters low pressure condensation supply mains output.
The present invention makes full use of in the nervous HEAT SETTING production process one, two, three, the waste heat of the condensate water of the middle pressure steam that four districts produce, combine the processing polyester staple fiber with the middle pressure steam of pipe network, promptly by adopting cascade flash process to produce, utilize the waste heat of the middle pressure condensed water that produces in the workshop sections such as nervous HEAT SETTING, by the level Four flash distillation, can produce the indirect steam of the required various pressure ratings of technology, substitute the part primary steam, both can reduce the middle pressure steam consumption of polyester staple fiber HEAT SETTING production process, simultaneously also can be with all are higher than the condensed water of 0.3MPa pressure rating all by the afterbody flash distillation in the processing behind the staple fibre, the final condensed water that produces 0.3MPa low-pressure steam and 0.3MPa, thereby improved the service efficiency of system's steam, and saved a large amount of energy.And the condensed water of 0.3MPa low-pressure steam and 0.3MPa all by the auxiliary workshop section comprehensive utilization of factory floor, has reduced the pollution (used heat) of condensed water (＞100 ℃) to environment on the one hand effectively, has saved the considerable energy on the other hand.
By the setting of flashing pressures at different levels, the steam pressure degree of regulation in each district can reach ± 0.05MPa simultaneously, thereby reaches the purpose that changes tow Surface Machining temperature.
(4) description of drawings
Fig. 1 is used for the cascade flash process schematic diagram processed behind the polyester staple fiber for the present invention.
Among the figure: press 1.6～2.4MPa main steam range in 1 input, 2 input mesolow 1.0～1.6MPa main steam ranges (outer tube), 3 pipeline distributors, 4 output (0.3MPa) main steam ranges, 5 output (0.3MPa) condensed water house stewards; 11 first flash tanks, 12 second flash tanks, 13 the 3rd flash tanks, 14 the 4th flash tanks, 21,22 pressure-regulating valves, 33,34,35 pressure-regulating valves, 43,44 indication control valves, 55 pressure indication control valve, 61,62,63,64 steam traps.
(5) specific embodiment
The invention will be further described below in conjunction with the drawings and specific embodiments.
Referring to Fig. 1, a kind of cascade flash process of processing behind the polyester staple fiber of being used for, with the polyester fondant is that raw material carries out in the fiber manufacture process, other steps in adopting prior art, its middle pressure steam from main steam range 1 input is that 1.6～2.4MPa enters nervous HEAT SETTING the 4th district behind pipeline distributor 3, and the steam pressure of nervous HEAT SETTING the 4th district output is that 1.6～2.3MPa steam water interface enters the 4th flash tank 14; The steam of the 4th flash tank 14 outputs and the middle pressure steam of pipeline distributor 3 are to enter nervous HEAT SETTING the 3rd district after 1.6～2.4MPa mixes, and the steam water interface pressure of nervous HEAT SETTING the 3rd district output is that 1.6～2.2MPa steam enters the 3rd flash tank 13; The steam of the 3rd flash tank 13 outputs and the middle pressure steam of pipeline distributor 3 are to enter nervous HEAT SETTING second district after 1.6～2.4MPa mixes, and the steam water interface pressure of nervous HEAT SETTING second district output is mixed second flash tank 12 that enters of condensed water that 1.4～1.8MPa and the 4th flash tank 14 are exported behind steam trap 63 through the condensed water and the 3rd flash tank 13 of output behind the steam trap 64; Enter nervous HEAT SETTING first district after the steam of second flash tank, 12 outputs and low pressure steam 1.0～1.6MPa steam of outer tube 2 inputs are mixed, the steam water interface pressure of nervous HEAT SETTING first district output is mixed first flash tank 11 that enters of condensed water that the 0.7～1.1MPa and second flash tank 12 are exported behind steam trap 62; The steam pressure of first flash tank 11 output is incorporated low-pressure steam house steward 4 outputs into for 〉=0.3MPa, and the condensed water pressure that first flash tank 11 is exported through steam trap 61 after is that 0.3～0.5MPa enters low pressure condensation supply mains 5 and exports.
The pipeline formation that the present invention adopts four flash tank series connection uses, five groups of steam pressure control valve groups and links to each other.The volume of flash pipe designs according to the maximum that the primary steam condensed water produces, and the condensation-water drain of each flash tank is equipped with steam trap, the constant pressure in being guaranteed jar by the back pressure of steam trap; The pressure of the indirect steam that produces in each jar can be set numerical value according to technological requirement, and controls by the pressure-regulating valve on the pipeline of every connection in the system.Whole control pressurer system adopts computer control, can require to set the temperature in each district of tension-setting machine according to the rerum natura of staple fibre.Pressure reduction degree of regulation between each district can reach ± 0.05MPa, makes the tow processing temperature change flexibility more.
The present invention utilizes the waste heat of the middle pressure condensed water that produces in the nervous HEAT SETTING four district workshop sections, by the level Four flash distillation, produce the indirect steam of various pressure ratings, substitute the part primary steam, both can reduce the middle pressure steam consumption of polyester staple fiber HEAT SETTING production process, simultaneously also can be with all are higher than the condensed water of 0.3MPa pressure rating all by the afterbody flash distillation in the processing behind the staple fibre, the final condensed water that produces 0.3MPa low-pressure steam and 0.3MPa, 0.3MPa low-pressure steam enters the comprehensive utilization of the auxiliary workshop section of factory floor, as refrigeration unit, air-conditioning unit and finish prepare the indirect chuck of workshop section or coil pipe heating, and 0.3MPa low pressure condensed water is directly delivered to finish and prepared workshop section and dilute dense oil.By comprehensive utilization staple fibre production process produce in, the low pressure condensed water, can save steam about 30%.
Claims (1)
1, a kind of cascade flash process of processing behind the polyester staple fiber of being used for, it is characterized in that: middle pressure steam enters nervous HEAT SETTING the 4th district behind the pipeline distributor, and the steam water interface of nervous HEAT SETTING the 4th district output enters the 4th flash tank; Enter nervous HEAT SETTING the 3rd district after the middle pressure steam that the steam of the 4th flash tank output and pipeline distributor come is mixed, the steam water interface of nervous HEAT SETTING the 3rd district output enters the 3rd flash tank; Enter nervous HEAT SETTING second district after the middle pressure steam that the steam of the 3rd flash tank output and pipeline distributor come is mixed, steam water interface that nervous HEAT SETTING second district exports and the 4th flash tank condensed water and the condensed water exported behind steam trap of the 3rd flash tank through exporting behind the steam trap mixes and enters second flash tank; Enter nervous HEAT SETTING first district after the low pressure steam of the steam of second flash tank output and outer tube input is mixed, mixed first flash tank that enters of the condensed water that the steam water interface of nervous HEAT SETTING first district output and second flash tank are exported behind steam trap; The steam of first flash tank output is incorporated the total pipe network of low-pressure steam into, and the condensed water that first flash tank is exported behind steam trap enters low pressure condensation supply mains output; Described middle pressure steam is 1.6～2.4MPa, and low pressure steam is 1.0～1.6MPa, and low-pressure steam is 0.3MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710036564A CN100577902C (en) | 2007-01-18 | 2007-01-18 | Cascade flash process for polyster staple post processing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710036564A CN100577902C (en) | 2007-01-18 | 2007-01-18 | Cascade flash process for polyster staple post processing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101089276A CN101089276A (en) | 2007-12-19 |
| CN100577902C true CN100577902C (en) | 2010-01-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200710036564A Expired - Fee Related CN100577902C (en) | 2007-01-18 | 2007-01-18 | Cascade flash process for polyster staple post processing |
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| CN (1) | CN100577902C (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102021662B (en) * | 2010-11-13 | 2011-10-26 | 恒天重工股份有限公司 | Evaporation process for vinylon high-strength high-modulus fiber spinning coagulating bath |
| CN102277633B (en) * | 2011-07-07 | 2013-01-02 | 唐山三友集团兴达化纤有限公司 | Method for achieving cascade utilization of steam in viscose staple fiber production process |
| CN106049178B (en) * | 2016-07-12 | 2018-03-02 | 广东省特种设备检测研究院顺德检测院 | Exhaust heat stepped recycling system and method in a kind of coating paper drying process |
| CN111270324A (en) * | 2020-03-13 | 2020-06-12 | 中复神鹰碳纤维有限责任公司 | Method for recycling secondary flash steam of spinning line drying condensate water |
| CN111947032A (en) * | 2020-06-22 | 2020-11-17 | 武汉第二船舶设计研究所(中国船舶重工集团公司第七一九研究所) | High-energy steam pipeline condensate recovery and drain valve on-line detection system |
| CN114507924B (en) * | 2022-02-21 | 2023-03-03 | 恒天重工股份有限公司 | Steam recycling method for post-processing of synthetic fibers |
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- 2007-01-18 CN CN200710036564A patent/CN100577902C/en not_active Expired - Fee Related
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| CN101089276A (en) | 2007-12-19 |
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