CN102383225A - Spandex DMAC recovery and heat energy utilization system - Google Patents
Spandex DMAC recovery and heat energy utilization system Download PDFInfo
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- CN102383225A CN102383225A CN2011103274103A CN201110327410A CN102383225A CN 102383225 A CN102383225 A CN 102383225A CN 2011103274103 A CN2011103274103 A CN 2011103274103A CN 201110327410 A CN201110327410 A CN 201110327410A CN 102383225 A CN102383225 A CN 102383225A
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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
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Abstract
The invention relates to a spandex DMAC recovery and heat energy utilization system which comprises a steam heater (1), a flash drum (2), a steam type bromine cooling machine (3), a mixed water storage tank (4), a hot water type bromine cooling machine (5), an SM (styrene monomer) recovery system (6) and a spinning workshop (7), wherein condensation water coming from the steam heater (1) is led to the flash drum (2), steam coming from the flash drum (2) is led to the steam type bromine cooling machine (3), hot water discharged by the flash drum (2) and condensation water discharged by the steam type bromine cooling machine (3) are both led to the mixed water storage tank (4), hot water coming from the mixed water storage tank (4) is led to the hot water type bromine cooling machine (5), cold water coming from the steam type bromine cooling machine (3) and the hot water type bromine cooling machine (5) is led to the SM recovery system (6), and hot air coming from the SM recovery system (6) is led to the spinning workshop (7). The spandex DMAC recovery and heat energy utilization system integrates the steam heater, the bromine cooling machines (which can be in the steam type or the hot water type) and the SM recovery system which are better matched to achieve the purpose of using energy in a stepped way.
Description
Technical field
The present invention relates to a kind of spandex DMAC reclaims and the heat energy utilization system.The DMAC raw material that is used for the spandex fiber production process reclaims and heat recovery.
Background technology
In the spandex production process, often use with 35% polyurethane to the DMAC of solute and 65% to the mixed solution of solvent as spinning solution.After spinning solution got into spinning shaft, DMAC solution is volatilization fast in 270 ℃ hot blast, and remaining solvent polyurethane curing molding becomes spandex fibre through multiple working procedure again.DMAC volatilization heat absorption causes 270 ℃ hot blast to be cooled to about 210 ℃, simultaneously, has comprised a large amount of DMAC steam in 210 ℃ the hot blast.Get into the SM recovery systems by about hot pipe cooling to 70 ℃ from 210 ℃ of hot blasts of spinning workshop; DMAC steam in the gas gets into saturation state; Continue about 5 ℃ of coolings through multistage surface cooler again; DMAC steam in the gas constantly condenses into liquid and is separated the SM recovery system, has realized the recycling of DMAC raw material with this.
Heat exchange of heat pipe in the SM recovery system itself needs the heat transfer temperature difference more than 30 ℃; So; The hot blast temperature of discharging from the SM recovery system hangs down 30 ℃ (below 180 ℃) than getting into hot blast temperature (about 210 ℃) certainly at least, and actual hot blast temperature of discharging from the SM recovery system is about 140 ℃.And the hot blast about 140 ℃ need be warming up to the requirement that could satisfy spinning workshop about 270 ℃ through steam heater, and therefore, steam heater becomes the main power consumption parts of native system.For DMAC solution in the recovery hot blast as much as possible, need hot blast temperature be reduced to about 5 ℃, so the SM recovery system needs low-temperature cooling water (7 ℃) to work, and 7 ℃ cooling water generally will obtain through bromine cooling machine.
Summary of the invention
The objective of the invention is to overcome above-mentioned deficiency; A kind of steam heater, bromine cooling machine (steam type and hot-water type) and SM recovery system integrated is provided, makes three's better matching use the spandex DMAC of the purpose of the energy to reclaim and the heat energy utilization system to reach ladder.
The object of the invention is realized like this: a kind of spandex DMAC reclaims and the heat energy utilization system; Said system comprises: steam heater, flash tank, steam type bromine cooling machine, mixing water storage tank, hot-water type bromine cooling machine, SM recovery system and spinning workshop; The water that coagulates that goes out said steam heater inserts flash tank; The steam that goes out said flash tank inserts the steam type bromine cooling machine; The water that coagulates that the hot water that said flash tank is discharged, steam type bromine cooling machine are discharged all inserts the mixing water storage tank; The hot water that goes out the mixing water storage tank inserts said hot-water type bromine cooling machine, and the cold water that goes out said steam type bromine cooling machine and hot-water type bromine cooling machine inserts said SM recovery system, and the hot blast that goes out said SM recovery system inserts spinning workshop.
The thermal source of steam heater directly adopts the superheated steam of power plant; The water that coagulates of steam heater gets into flash tank; Coagulate the thermal source of the steam of water pressure reduction back flash distillation generation as the steam type bromine cooling machine, the hot water that the water with fixed attention that the hot water that flash tank is discharged, steam type bromine cooling machine are discharged and other technology are come gets into the hot-water type bromine cooling machine as thermal source in mixing water storage tank mixing back; 7 ℃ of cold water that the steam type bromine cooling machine is produced get into the low-temperature receiver of SM recovery system as cooling hot blast recovery DMAC, reclaim DMAC solution.7 ℃ of cold water that the hot-water type bromine cooling machine is produced get into the low-temperature receiver of SM recovery system as cooling hot blast recovery DMAC, reclaim DMAC solution.7 ℃ of cold water of steam type bromine cooling machine and the production of hot-water type bromine cooling machine are made full use of by the SM recovery system, and hot blast is cooled to 5 ℃ of operating modes, and the DMAC gas in the gas is condensed into and is liquid state and Separation and Recovery, has realized the purpose of gas cooled and recycling.
The invention has the beneficial effects as follows:
Spandex DMAC recovery of the present invention and heat energy utilization system have passed through high effective integration steam heater, bromine cooling machine (steam type and hot-water type) and SM recovery system make three's better matching to reach the purpose that ladder uses the energy, so entire system is energy-conservation.
Description of drawings
Fig. 1 reclaims and heat energy utilization system global structure sketch map for spandex DMAC of the present invention.
Reference numeral among the figure:
The specific embodiment
Referring to Fig. 1, Fig. 1 reclaims and heat energy utilization system global structure sketch map for spandex DMAC of the present invention.Can be found out that by Fig. 1 spandex DMAC of the present invention reclaims and the heat energy utilization system, comprising: steam heater 1, flash tank 2, steam type bromine cooling machine 3, mixing water storage tank 4, hot-water type bromine cooling machine 5, SM recovery system 6, spinning workshop 7 are connected pipeline with some.The water that coagulates that goes out said steam heater 1 inserts flash tank 2; The steam that goes out said flash tank 2 inserts steam type bromine cooling machine 3; The water that coagulates that the hot water that flash tank 2 is discharged, steam type bromine cooling machine 3 are discharged inserts mixing water storage tank 4; The hot water that goes out mixing water storage tank 4 inserts hot-water type bromine cooling machine 5, and the cold water that goes out steam type bromine cooling machine 3 and hot-water type bromine cooling machine 5 inserts SM recovery system 6, and the hot blast that goes out SM recovery system 6 inserts spinning workshop 7.
Be warming up to 270 ℃ to 142 ℃ of hot blasts from the SM recovery system after power plant's steam entering steam heater and advance spinning workshop 7, simultaneously, power plant's vapor condensation becomes 261 ℃ high pressure to coagulate water.Coagulate water from 261 ℃ high pressure of steam heater and get into flash tank through choke valve decompression back and flash off 162 ℃ of steam, it is that thermal source gets into the steam type bromine cooling machine and produces 7 ℃ of cold water and supply the SM recovery systems to use that 162 ℃ of steam remake; Because the hot water that water has become 162 ℃ of steam and 162 ℃ is coagulated in flash process heat absorption, 261 ℃ high pressure.
162 ℃ the hot water of discharging from flash tank gets into the mixing water jar through choke valve decompression back; Coagulate water from 90 ℃ of the steam type bromine cooling machine and also need pass through the choke valve decompression and could get into and mix water pot, other technology hot water of 105 ℃ get into to mix behind water pots and mix with above-mentioned two strands of hot water that to obtain that mixed hot water remakes be that thermal source gets into the uses of 7 ℃ of cold water confessions of hot-water type bromine cooling machine production SM recovery systems.
7 ℃ of cooling waters from steam type bromine cooling machine 3 and hot-water type bromine cooling machine 5 get into secondary table cooler and three grades of surface coolers of SM recovery system; Being cooled to gas from 50 ℃ constantly has DMAC steam to be condensed into fluid separation applications to reclaim 20 ℃ the process; The SM recovery system has realized the recovery function (some DMAC reclaims at one-level surface cooler and level Four surface cooler condensation separation, but two surface coolers of person do not adopt 7 ℃ of cooling waters as low-temperature receiver) of a part of DMAC.
The present invention has substituted oil heater commonly used with steam heater.Conventional oil heater is heated through the miniature boiler oil supply, and well-known, the EER boiler of power plant of miniature boiler is much lower, so, adopt power plant's steam more reasonable as thermal source.
Because the SM recovery system needs 7 ℃ cold water, conventional system need dispose bromine cooling machine, and bromine cooling machine need provide the vapour source separately, and suitable proportion is occupied as energy consumption in this part vapour source in whole system.
The present invention adopts after the steam heater, and the bromine cooling machine of system configuration does not need independent vapour source, so the vapour source energy consumption of bromine cooling machine has been cancelled.Concrete implementation procedure is: the steam that has produced 0.6Mpa after the hot water flash distillation of discharging from steam heater is again as the thermal source of steam type bromine cooling machine; 162 ℃ the hot water that flash tank is discharged, 90 ℃ steam type bromine cooling machine coagulate 105 ℃ hot water that water and other technology comes again as the thermal source of hot-water type bromine cooling machine.
Steam heater among the present invention is adopting a series of new models aspect the structural design: heat-exchanging tube bundle adopts coil pipe and do not adopt conventional channel structure is because internal tube pressure very high (about 50 kilograms); Fin and heat exchanger tube adopt the spiral high-frequency welding to satisfy the requirement of high temperature heat exchange; Although single coil is a horizontal positioned, the whole tube bank has the angle of inclination along the hot fluid flow direction, discharges to make things convenient for lime set, guaranteed to coagulate the smooth and easy discharge of water, and the gripper shoe of coil pipe adopts the mode of many assemblings, has realized the dual-use function that supports and seal.
Claims (2)
1. a spandex DMAC reclaims and the heat energy utilization system; It is characterized in that: said system comprises: steam heater (1), flash tank (2), steam type bromine cooling machine (3), mixing water storage tank (4), hot-water type bromine cooling machine (5), SM recovery system (6) and spinning workshop (7); The water that coagulates that goes out said steam heater (1) inserts flash tank (2); The steam that goes out said flash tank (2) inserts steam type bromine cooling machine (3); The water that coagulates that the hot water that said flash tank (2) is discharged, steam type bromine cooling machine (3) are discharged all inserts mixing water storage tank (4); The hot water that goes out mixing water storage tank (4) inserts said hot-water type bromine cooling machine (5); The cold water that goes out said steam type bromine cooling machine (3) and hot-water type bromine cooling machine (5) inserts said SM recovery system (6), and the hot blast that goes out said SM recovery system (6) inserts spinning workshop (7).
2. a kind of spandex DMAC according to claim 1 reclaims and the heat energy utilization system; It is characterized in that: said steam heater (1) adopts following structure: heat-exchanging tube bundle adopts coil pipe; Fin and heat exchanger tube adopt the spiral high-frequency welding; Coil pipe adopts horizontal arrangement but whole tube bank has the angle of inclination along the hot fluid flow direction, and the gripper shoe of coil pipe adopts the mode of many assemblings.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011103274103A CN102383225A (en) | 2011-10-25 | 2011-10-25 | Spandex DMAC recovery and heat energy utilization system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011103274103A CN102383225A (en) | 2011-10-25 | 2011-10-25 | Spandex DMAC recovery and heat energy utilization system |
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| CN102383225A true CN102383225A (en) | 2012-03-21 |
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| CN2011103274103A Pending CN102383225A (en) | 2011-10-25 | 2011-10-25 | Spandex DMAC recovery and heat energy utilization system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102787395A (en) * | 2012-08-08 | 2012-11-21 | 北京碧水源膜科技有限公司 | Dimethylacetamide (DMAC) recycling device and method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4177111A (en) * | 1976-07-15 | 1979-12-04 | Bayer Aktiengesellschaft | Process for the recovery of dimethylacylamides |
| CN101962813A (en) * | 2010-08-16 | 2011-02-02 | 江阴中绿化纤工艺技术有限公司 | Thermal-energy recycling system in spandex-spinning production process |
| CN201785554U (en) * | 2010-08-16 | 2011-04-06 | 江阴中绿化纤工艺技术有限公司 | Solvent recycling system in spinning production process of spandex |
| CN202297902U (en) * | 2011-10-25 | 2012-07-04 | 双良节能系统股份有限公司 | Spandex dimethyl acetylamide (DMAC) recycling and heat utilizing system |
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2011
- 2011-10-25 CN CN2011103274103A patent/CN102383225A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4177111A (en) * | 1976-07-15 | 1979-12-04 | Bayer Aktiengesellschaft | Process for the recovery of dimethylacylamides |
| CN101962813A (en) * | 2010-08-16 | 2011-02-02 | 江阴中绿化纤工艺技术有限公司 | Thermal-energy recycling system in spandex-spinning production process |
| CN201785554U (en) * | 2010-08-16 | 2011-04-06 | 江阴中绿化纤工艺技术有限公司 | Solvent recycling system in spinning production process of spandex |
| CN202297902U (en) * | 2011-10-25 | 2012-07-04 | 双良节能系统股份有限公司 | Spandex dimethyl acetylamide (DMAC) recycling and heat utilizing system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102787395A (en) * | 2012-08-08 | 2012-11-21 | 北京碧水源膜科技有限公司 | Dimethylacetamide (DMAC) recycling device and method |
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Application publication date: 20120321 |