CN109780883A - A kind of method of the waste heat recycling of Lyocell fiber production line condensed water - Google Patents
A kind of method of the waste heat recycling of Lyocell fiber production line condensed water Download PDFInfo
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- CN109780883A CN109780883A CN201711109282.9A CN201711109282A CN109780883A CN 109780883 A CN109780883 A CN 109780883A CN 201711109282 A CN201711109282 A CN 201711109282A CN 109780883 A CN109780883 A CN 109780883A
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- water
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- condensed water
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 110
- 238000000034 method Methods 0.000 title claims abstract description 21
- 239000002918 waste heat Substances 0.000 title claims abstract description 21
- 229920000433 Lyocell Polymers 0.000 title claims abstract description 15
- 238000007380 fibre production Methods 0.000 title claims abstract description 14
- 238000004064 recycling Methods 0.000 title claims abstract description 9
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 claims abstract description 10
- 238000010612 desalination reaction Methods 0.000 claims description 7
- 238000010438 heat treatment Methods 0.000 claims description 7
- 230000000694 effects Effects 0.000 abstract description 8
- 230000005494 condensation Effects 0.000 abstract description 4
- 238000009833 condensation Methods 0.000 abstract description 4
- 238000011084 recovery Methods 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000005406 washing Methods 0.000 abstract description 3
- 239000008234 soft water Substances 0.000 description 6
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 239000012286 potassium permanganate Substances 0.000 description 3
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 230000001595 contractor effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Landscapes
- Heat Treatment Of Water, Waste Water Or Sewage (AREA)
Abstract
The present invention provides a kind of method of the waste heat recycling of Lyocell fiber production line condensed water, the method, including recycling condensed water, steam-water heat exchanging, secondary heat exchange.The exhaust heat recovering method of condensed water of the present invention, so that the condensed water that production line generates all recycles, while the thermal energy of its band is recycled by sufficiently heat exchange, and condensate temperature drops to 28-30 DEG C by 90 DEG C -110 DEG C, and the rate of recovery of waste heat is up to 85% or more；The exhaust heat recovering method of condensed water of the present invention can heat desalted water, the temperature of desalted water is heated to 60-70 DEG C or so by 20 DEG C or so by the waste heat of condensed water by secondary heat exchange；Hot water directly can be sent to down one of hot water water conservancy project sequence-washing, be used after further temperature adjustment, that is, solve side effect brought by condensation water residual heat, be also fully utilized by its thermal energy, reach energy-saving effect.
Description
Technical field
The present invention relates to a kind of methods of the waste heat of Lyocell fiber production line condensed water recycling, belong to Lyocell fiber
Heat recovery technology field.
Background technique
Current Lyocell fiber production line condensing hot air furnace is typically all a recycling condensed water, and condensed water institute band
A large amount of thermal energy waste, simultaneously because its temperature is higher, having damage to general pond, pipeline, (heat expansion of the temperature difference is cold
Contracting effect).
Summary of the invention
In view of the deficienciess of the prior art, the waste heat that the present invention provides a kind of Lyocell fiber production line condensed water returns
The method of receipts, to realize following goal of the invention:
(1) condensed water that production line of the present invention generates all recycles, and the rate of recovery of condensation water residual heat is up to 85% or more；Condensed water
Temperature is reduced to 30 DEG C or less after waste heat recycles.
(2) waste heat of condensed water is used to heat desalted water by scheme of the present invention, and the temperature of desalted water is added by 20 DEG C
Heat arrives 60-70 DEG C；Overcome side effect brought by condensation water residual heat, make full use of thermal energy, reaches energy-saving effect.
In order to solve the above technical problems, the technical solution adopted by the present invention is as follows:
(1) condensed water is recycled
The condensed water of the generations such as dryer, reactor, evaporation is uniformly recovered to condensate water pot, condensate temperature is at 90 DEG C -110
℃。
(2) steam-water heat exchanging
It installs vapor-water heat exchanger additional at the top of condensate water pot, utilizes the fresh desalination for the Secondary-steam heating room temperature that condensed water generates
Water；The desalted water, temperature is 20 DEG C before heating, and by steam-water heat exchanging, the temperature of desalted water is increased to 28 DEG C.
(3) secondary heat exchange
Desalted water of the step (2) by heat exchange, then exchange heat through the second heat exchanger, desalination coolant-temperature gage is heated to 60- after heat exchange
70℃；The cold desalted water water temperature that exchanged heat twice greatly improves, and hot water directly can be sent to down one of hot water water conservancy project sequence-water
It washes, is used after further temperature adjustment.
The condensed water of the heat of condensate pump outlet is exchanged heat with the conveying that heat-exchanger pump is at the uniform velocity balanced through the second heat exchanger,
Condensed water water temperature can drop to 30 DEG C or less；Condensed water after cooling is used as soft water, through detecting the equal energy of condensed water water quality indicator
Reach soft water standard, i.e. total hardness :≤1 ° of dH, chloride content :≤50mg/L, KMnO4Consumption :≤8mg/L；
Second heat exchanger, preferably plate heat exchanger.
The desalted water, flow are twice of condensate flow；Desalination water flow can be adjusted according to water spot temperature requirement
To reach appropriate water temperature.
The flow of the cool condensate is 10m3/h；
The flow of the desalted water is 20m3/h。
The present invention utilizes two concatenated heat exchangers, and the condensed water after the secondary steam heat exchange first generated with condensed water again with heat changes
Heat, the heat of secondary steam and the waste heat of condensed water that sufficiently recycle condensate water pot generation avoid the loss of heat, condensed water
Room temperature is fallen below, can arbitrarily arrange to use, the side effect of waste heat bring is not present, the hot condensed water drop crossed through this process
To room temperature, it can all recycle and do soft water use；The heat of its band is exchanged to the desalted water of room temperature；Accomplish the abundant of hot and cold condensate
It recycles.
By adopting the above-described technical solution, having the technical effect that of reaching of the present invention
(1) exhaust heat recovering method of condensed water of the present invention, so that the condensed water that production line generates all recycles, while its institute
The thermal energy of band is recycled by sufficiently heat exchange, and condensate temperature drops to 30 DEG C hereinafter, the rate of recovery of waste heat reaches by 90 DEG C -110 DEG C
85% or more.
(2) waste heat of condensed water can be passed through secondary heat exchange, heating by the exhaust heat recovering method of condensed water of the present invention
Desalted water, the temperature of desalted water are heated to 60-70 DEG C or so by 20 DEG C or so；Hot water directly can be sent to down one of hot water to use
Water conservancy project sequence-washing, uses after further temperature adjustment, that is, solves side effect brought by condensation water residual heat, be also fully utilized by it
Thermal energy reaches energy-saving effect.
(3) exhaust heat recovering method of condensed water of the present invention after condensed water falls below room temperature, can be recycled all and do soft water
It uses, the condensed water after cooling: total hardness :≤1 ° of dH, chloride content :≤50mg/L, KMnO4Consumption :≤8mg/L.
Detailed description of the invention:
Fig. 1: the flow chart of the waste heat recycling of Lyocell fiber production line condensed water of the present invention.
Specific embodiment
The following describes the present invention in detail with reference to examples.Following embodiment will be helpful to those skilled in the art
The present invention is further understood, but the invention is not limited in any way.It should be pointed out that those skilled in the art
For, without departing from the inventive concept of the premise, it can also make certain adjustments and improvements.These belong to guarantor of the invention
Protect range.
A kind of method of the waste heat recycling of the Lyocell fiber production line condensed water of embodiment 1
The following steps are included:
(1) condensed water is recycled
The condensed water of the generations such as dryer, reactor, evaporation is uniformly recovered to condensate water pot, condensate temperature is at 90 DEG C -110
℃。
(2) steam-water heat exchanging
It installs vapor-water heat exchanger additional at the top of condensate water pot, utilizes the fresh desalination for the Secondary-steam heating room temperature that condensed water generates
Water；The desalted water, temperature is 20 DEG C or so before heating, and after steam-water heat exchanging, the temperature of desalted water is increased to 28 DEG C.
(3) secondary heat exchange
Desalted water of the step (2) by heat exchange, then exchange heat through the second heat exchanger, desalination coolant-temperature gage is heated to 60- after heat exchange
70 DEG C or so；The cold desalted water water temperature that exchanged heat twice greatly improves, and hot water directly can be sent to down one of hot water water conservancy project sequence-
Washing, uses after further temperature adjustment.
The condensed water of the heat of condensate pump outlet is exchanged heat with the conveying that heat-exchanger pump is at the uniform velocity balanced through the second heat exchanger,
Condensed water water temperature can drop to 30 DEG C or less；Condensed water after cooling is used as soft water, through detecting the equal energy of condensed water water quality indicator
Reach soft water standard, i.e. total hardness :≤1 ° of dH, chloride content :≤50mg/L, KMnO4Consumption :≤8mg/L
Second heat exchanger, preferably plate heat exchanger.
The desalted water, flow are twice of condensate flow；Desalination water flow can be adjusted according to water spot temperature requirement
To reach appropriate water temperature.
The tandem of cool desalted water into two heat exchangers is overturned, goal of the invention of the invention is also able to achieve.
Unless otherwise indicated, percentage employed in the present invention is weight percent, ratio of the present invention,
For mass ratio.
Finally, it should be noted that the foregoing is only a preferred embodiment of the present invention, it is not intended to restrict the invention,
Although the present invention is described in detail referring to the foregoing embodiments, for those skilled in the art, still may be used
To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features.
All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in of the invention
Within protection scope.
Claims (6)
1. the method that a kind of waste heat of Lyocell fiber production line condensed water recycles, it is characterised in that: the method, including return
Receive condensed water, steam-water heat exchanging, secondary heat exchange.
2. the method that a kind of waste heat of Lyocell fiber production line condensed water according to claim 1 recycles, feature exist
In: the recycling condensed water, condensate temperature is at 90 DEG C -110 DEG C.
3. the method that a kind of waste heat of Lyocell fiber production line condensed water according to claim 1 recycles, feature exist
In: the steam-water heat exchanging installs vapor-water heat exchanger additional at the top of condensate water pot, the Secondary-steam heating room temperature generated using condensed water
Fresh desalted water；The desalted water, temperature is 20 DEG C before heating, and by steam-water heat exchanging, the temperature of desalted water is increased to 28 DEG C.
4. the method that a kind of waste heat of Lyocell fiber production line condensed water according to claim 1 recycles, feature exist
In: the secondary heat exchange will exchange heat by the desalted water of steam-water heat exchanging, then through the second heat exchanger, desalination water temperature after heat exchange
Degree is heated to 60-70 DEG C；The condensed water of the heat of condensate pump outlet, with the conveying that heat-exchanger pump is at the uniform velocity balanced, through the second heat exchanger
It exchanges heat, condensed water water temperature drops to 28-30 DEG C.
5. the method that a kind of waste heat of Lyocell fiber production line condensed water according to claim 4 recycles, feature exist
In: second heat exchanger is plate heat exchanger.
6. the method that a kind of waste heat of Lyocell fiber production line condensed water according to claim 4 recycles, feature exist
In: the secondary heat exchange, the flow of desalted water are twice of condensate flow；The flow of desalted water is 20m3/ h, cool condensate
Flow is 10m3/h。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711109282.9A CN109780883A (en) | 2017-11-11 | 2017-11-11 | A kind of method of the waste heat recycling of Lyocell fiber production line condensed water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711109282.9A CN109780883A (en) | 2017-11-11 | 2017-11-11 | A kind of method of the waste heat recycling of Lyocell fiber production line condensed water |
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| Publication Number | Publication Date |
|---|---|
| CN109780883A true CN109780883A (en) | 2019-05-21 |
Family
ID=66485337
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711109282.9A Pending CN109780883A (en) | 2017-11-11 | 2017-11-11 | A kind of method of the waste heat recycling of Lyocell fiber production line condensed water |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118242631A (en) * | 2024-03-25 | 2024-06-25 | 肇庆新奥清洁能源有限公司 | Gas condensation hot water waste heat recovery equipment |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6071889U (en) * | 1976-12-29 | 1985-05-21 | ウエスチングハウス エレクトリック コ−ポレ−ション | Heat exchanger |
| CN201396577Y (en) * | 2009-03-03 | 2010-02-03 | 北京弘泰汇明能源技术有限责任公司 | Multistage condensed water closed type recovery device |
| CN102563608A (en) * | 2010-12-31 | 2012-07-11 | 贵州中烟工业有限责任公司 | Secondary steam-recycling method for condensate collector |
| CN103047642A (en) * | 2011-10-12 | 2013-04-17 | 沈兴财 | Multilevel condensation water heating system |
| CN103267275A (en) * | 2013-05-26 | 2013-08-28 | 刘成红 | Condensate water recovering device |
| CN106907699A (en) * | 2015-12-23 | 2017-06-30 | 沈阳铝镁设计研究院有限公司 | A kind of method that high temperature initial steam condensate return is directly utilized in steam power plant |
-
2017
- 2017-11-11 CN CN201711109282.9A patent/CN109780883A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6071889U (en) * | 1976-12-29 | 1985-05-21 | ウエスチングハウス エレクトリック コ−ポレ−ション | Heat exchanger |
| CN201396577Y (en) * | 2009-03-03 | 2010-02-03 | 北京弘泰汇明能源技术有限责任公司 | Multistage condensed water closed type recovery device |
| CN102563608A (en) * | 2010-12-31 | 2012-07-11 | 贵州中烟工业有限责任公司 | Secondary steam-recycling method for condensate collector |
| CN103047642A (en) * | 2011-10-12 | 2013-04-17 | 沈兴财 | Multilevel condensation water heating system |
| CN103267275A (en) * | 2013-05-26 | 2013-08-28 | 刘成红 | Condensate water recovering device |
| CN106907699A (en) * | 2015-12-23 | 2017-06-30 | 沈阳铝镁设计研究院有限公司 | A kind of method that high temperature initial steam condensate return is directly utilized in steam power plant |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118242631A (en) * | 2024-03-25 | 2024-06-25 | 肇庆新奥清洁能源有限公司 | Gas condensation hot water waste heat recovery equipment |
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| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20210526 Address after: Room 1115, Zhongfu building, 99 Jianguo Road, Chaoyang District, Beijing 100020 Applicant after: HI-TECH FIBER Group Corp. Applicant after: BAODING SWAN FIBER CO.,LTD. Address before: Room 1115, Zhongfu building, 99 Jianguo Road, Chaoyang District, Beijing 100020 Applicant before: HI-TECH FIBER Group Corp. Applicant before: BAODING SWAN FIBER CO.,LTD. Applicant before: CHTC BIO-BASED MATERIAL ENGINEERING & TECHNOLOGY(NINGBO) Co.,Ltd. |
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190521 |