CN101303201A - Method of waste heat recovery utilization in cheese dyeing course - Google Patents
Method of waste heat recovery utilization in cheese dyeing course Download PDFInfo
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- CN101303201A CN101303201A CNA2008101164766A CN200810116476A CN101303201A CN 101303201 A CN101303201 A CN 101303201A CN A2008101164766 A CNA2008101164766 A CN A2008101164766A CN 200810116476 A CN200810116476 A CN 200810116476A CN 101303201 A CN101303201 A CN 101303201A
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Abstract
The invention discloses a method for recycling waste heat in cheese dyeing process, which comprises the following steps: (a) high-temperature dyeing liquor waste water is discharged to a hot waste water collecting pool; (b) a waste water pump is used for pumping the hot waste water in the waste water collecting pool to a heat exchanger with cooling water for heat exchanging; (c) the cooling water after heat exchanging flows into a hot clean water collecting pool for standby; the hot waste water after being cooled is discharged to a waste water ditch for being transferred to a waste water processing station for processing; (d) a clean water pump is used for pumping the hot water in the hot clean water collecting pool to equipment needing the hot water; the equipment is applied to the pretreatment procedure of the cheese dyeing process; the cooled water, condensate water and heat energy of dyeing workshops are recycled. The method adopts fully automatic control process and effectively utilizes the waste heat produced and saves electric energy that is consumed by the heating of water at a normal temperature as well as saves the time of heating process, thus causing production process to be smoother, improving efficiency and also having the advantage of reducing energy consumption.
Description
Technical field
The invention belongs to the complementary energy residual heat integrative and utilize the field, relate to a kind of method for recycling waste heat in cheese dyeing process.
Background technology
In recent years, China's dyeing development is very fast, and working ability occupies first place, the world, becomes textile printing and dyeing big producing country.The above dyeing cloth output of scale was 430.30 hundred million meters in 2006, increased by 10.47% on a year-on-year basis; The above printing and dyeing enterprise amount of scale 1948 families increase by 7.27% on year-on-year basis, and the added value of dyeing and printing products improves constantly, and the profit level promotes.But situations such as there is the energy consumption height in China's printing and dyeing enterprise, production efficiency is low, resource utilization is low, high pollution.Add up according to State Environmental Protection Administration, China's dyeing water consumption has occupied the 2nd of national manufacturing industry, with abroad compare the unit product water withdrawal be developed country 2-3 doubly, the waste discharge total amount is positioned at the 5th of national manufacturing industry total emission volumn, the unit product water consumption of printing and dyeing enterprise approximately is about 3 times of developed country, and the recycling rate of waterused of water lags behind the manufacturing industry average level, only is 7%.Dyeing in the bobbin dyeing technology flow process and post-processing stages are the energy consumption maximums, not only be to discharge waste water in a large number behind the cheese dyeing, more be a large amount of heat energy entrained in these a large amount of waste water, can not be fully utilized, along with the discharge of waste water and cooling naturally, wasted.
Present most printing and dyeing producer is after dyeing course finishes, be about to the direct device for transferring of high temperature dye liquor, do not carry out any recycling, cause a large amount of heats that wherein contain to waste, dye liquor temperature after ordinary stain finishes is about 80 ℃, can reach 130 ℃ during high temperature discharge, and its heat that carries can be with about 30-40 ℃ of the equivalent coolant-temperature gage rising under the room temperature, Gao Shikeda is more than 80 ℃, and entrained a large amount of heat energy fail to obtain to utilize in the waste water.
Summary of the invention
The object of the present invention is to provide a kind of method for recycling waste heat in cheese dyeing process, this method is fully used the heat in the high temperature dye liquor waste water, has improved rate of energy, has compressed the process time in the dyeing course, shorten the cycle of dyeing, reduced production cost.
The technical scheme taked of the present invention is for achieving the above object:
A kind of method for recycling waste heat in cheese dyeing process comprises the steps:
D) with high temperature dye liquor discharge of wastewater in hot sewage collecting pool;
E) by sewage pump the hot sewage in the hot sewage collecting pool is squeezed into and carried out heat exchange in the heat exchanger that is connected with cold water;
F) it is standby to flow into hot clear water collecting pit through the cold water of heat exchange; The hot sewage that has fallen temperature is discharged to and delivers to the Sewage Disposal processing in the Bilge;
D) by clarified water pump the hot water in the hot clear water collecting pit is squeezed into the equipment that needs hot water, described equipment is the equipment that uses in the pretreatment process in the cheese dyeing course.
Above-mentioned method also comprises the steps:
By the heat exchanger that equipment carries high temperature dye liquor waste water is carried out the heat exchange cooling with cold water, exchange back cooling water heats up, high temperature dye liquor waste water drops to generally at back device for transferring more than 60 ℃ below 80 ℃, when the dye liquor wastewater temperature more than 60 ℃ the time, it is standby to be discharged to hot sewage collecting pool, be discharged in the Bilge when being lower than 60 ℃, deliver to Sewage Disposal and handle, it is standby that the cooling water after the intensification is delivered to hot clear water collecting pit.
Said method also comprises: in dyeing course, the condensed water that produces in the condensed water that Steam Heating dye liquor and self cooling forms and the conveyance conduit of steam collects directly that to deliver to hot clear water collecting pit by pipeline standby.
Described heat exchanger cold water leaving water temperature can be controlled, and according to the openings of sizes that the inlet temperature and the setting cold water leaving water temperature of hot sewage are regulated the cooling water inlet proportioning valve automatically, the flow that control cold water enters guarantees leaving water temperature.
Described clarified water pump is squeezed into thermoregulator earlier with the hot water in the hot clear water collecting pit and is carried out adjustment, and then delivers on the equipment by pipeline and to use.
The temperature of described exchange back cooling water is to control by the flow that automatic control cooling water enters heat exchanger.
Method for recycling waste heat in cheese dyeing process provided by the invention not only can cut down the consumption of energy on a large scale, the more important thing is the utilization rate that can improve resource.
Adopt the inventive method to carry out the dyeing processing of cheese, have characteristics such as automation, rapid, flexibility, economization.Its beneficial effect is specifically described as follows:
(1) under the condition of computer complete monitoring management, the dye liquor Wastewater Recovery is controlled automatically, and also be under pre-set programme-control, to finish, and be controlled automatically equally to the recovery of condensed water in the cool-heat-exchanger and cooling water to the process that the high temperature dye liquor waste water after reclaiming carries out cold and hot exchange.
(2) temperature by the cooling water after the cold and hot exchange can reach 40～60 ℃, and it is directly applied to pretreatment process in the dyeing course.Not only accomplished the recycling of energy, reduced energy resource consumption, and saved normal-temperature water is heated spent electric energy, heat energy and time, made that production process is more smooth and easy, efficient improves.
(3) this method has been saved the process of preheating water heating, has shortened the cycle of dyeing processing greatly, and a kind of processing method of energy-and time-economizing is provided for cheese dyeing processing.
(4) the main exchange process of this method is to carry out in the heat exchanger of sealing, and the efficient of thermal energy transfer is about more than 60%～70%.Except high temperature dye liquor waste water being drawn in the heat exchanger with pump, have outside the power consumption, there is no other extra power consumption, promptly reduced the cost that energy consumption has reduced cheese dyeing again.
Description of drawings
Fig. 1 is a process flow diagram of the present invention.
Among the figure: 1 dyeing workshop, 2 hot sewage collecting pools, 2.1 sewage pumps, 3 hot clear water collecting pits, 3.1 clarified water pumps, 4 normal temperature clear water reserviors, 5 heat exchangers, 6 thermoregulators, 6.1 steam inlet proportioning valves, 6.2 clear water percentage of import valves, 7 proportioning valves, 8 pipelines, 9 blow-off lines, 10 aqueducts.
Referring to Fig. 1, from being transported to through aqueduct 10 through the cooling water of heating and the condensed water of collection that dyeing workshop 1 flows out For subsequent use in the hot clear water collecting pit 3; The high temperature dyeing waste water of discharging from dyeing workshop 1 is discharged into the hot sewage collecting pool 2, and is logical Cross sewage pump 2.1 the hot sewage in the hot sewage collecting pool 2 is squeezed in the heat exchanger 5, reverse being connected with in the heat exchanger 5 Cold water from normal temperature clear water reserviors 4 carries out heat exchange, and the cold water leaving water temperature is according to the inlet temperature of setting value and hot sewage, system Automatically regulate the openings of sizes of proportioning valve 7, the flow that control cold water enters guarantees leaving water temperature; Cold water through heat exchange passes through pipe It is for subsequent use that hot clear water collecting pit 3 is delivered in road 8; Fall the hot sewage of temperature, be discharged in the Bilge by blow-off line 9, delivered to dirt Water treatment station is processed; By clarified water pump 3.1 hot water in the hot clear water collecting pit 3 is squeezed into thermoregulator 6 and carries out adjustment, Regulate by the clear water percentage of import valve 6.2 and the steam inlet proportioning valve 6.1 that are arranged on the thermoregulator 6, by Hot water after clarified water pump 3.1 will be regulated is delivered to by pipeline on the equipment in the pretreatment process of dyeing workshop 1 and is used.
The specific embodiment
The invention will be further described below in conjunction with the drawings and specific embodiments, but not as a limitation of the invention.
Retracting device of the present invention mainly is made up of the recovery of three parts and the supply of a part.
The first, the recovery of cooling water and heat energy.High temperature dye liquor waste water is when cooling, with the demineralized water of normal temperature, i.e. cooling water, the heat exchanger that carries by equipment carries out the heat exchange cooling, exchange back cooling water heats up, high temperature dye liquor waste water drops to design temperature, and design temperature is generally below 80 ℃ back device for transferring more than 60 ℃, when temperature more than 60 ℃ the time, it is standby to be discharged to hot sewage collecting pool 2, to be discharged in the Bilge when being lower than 60 ℃, and deliver to Sewage Disposal and handle, it is standby that the cooling water after the intensification is delivered to hot clear water collecting pit 3.This process has reclaimed the cooling water of heat energy and cleaning, and old equipment is not to carry out the heat exchange cooling with heat exchanger, but directly injects the cooling of normal temperature demineralized water, thus there is not the recovery of water and heat energy, and increased the treating capacity of sewage.The temperature of high temperature dye liquor waste water device for transferring is a technique initialization, and when reaching exhaust temperature, when being generally below 80 ℃ more than 60 ℃, exchange process promptly stops.Sometimes without cooling and directly with high temperature dye liquor waste water device for transferring, be generally 98 ℃-130 ℃, can directly be discharged to and deliver to the Sewage Disposal processing in the Bilge, also can be discharged in the hot sewage collecting pool 2 by pipeline, at this moment, can only carry out the recycling of heat energy.
The second, the recovery of condensed water.Condensed water is that dye liquor is when heating up, steam and dye liquor carry out heat exchange by the heat exchanger on the equipment, dye liquor is raised to the temperature of technique initialization, and steam cooling becomes condensed water, this part condensate temperature is higher generally can to surpass 80 ℃, directly delivers in the hot clear water collecting pit 3 standby by pipeline.This process finishes after the intensification of dye liquor begins to finish to insulation, when promptly beginning to lower the temperature.The steam trap of facilities such as another part condensed water derives from the conveyance conduit of steam, equipment.This part has reclaimed demineralized water and heat energy.
More than two-part recovery all be to utilize the heat exchanger of equipment itself to carry out.
Three, the recovery of heat energy.This part is the recycling of pure heat energy, and is necessary with clean demineralized water, and promptly cold water carries out thermal energy exchange by the heat exchanger beyond the equipment.The high temperature dye liquor waste water that equipment is discharged, generally all more than 60 ℃, reach 130 ℃ sometimes, general directly being discharged in the Bilge of waste water that is lower than 60 ℃ is not recycled, deliver to hot sewage collecting pool 2 by pipeline, equipment can be set toward where discharging, and two discharging mouths of pipe are arranged, and also can be discharged in the Bilge.When needs carry out heat exchange, water level in this moment as hot sewage collecting 2 ponds is lower than to be set down in limited time, to not work, the work of sewage pump 2.1 is automatic, by a sewage pump 2.1 hot sewage is squeezed into heat exchanger 5, this moment, the proportioning valve 7 of normal temperature demineralized water was opened simultaneously, begin the reverse cold water that enters and carry out thermal energy exchange, the cold water leaving water temperature of exchange process can be established, it will and set the openings of sizes that the cold water leaving water temperature is regulated proportioning valve 7 automatically according to the inlet temperature of sewage, and the flow that control cold water enters guarantees the temperature of water outlet.As not carrying out the setting of cold water outlet temperature, at this moment, proportioning valve 7 reaches maximum position, the cold water flow maximum that enters, and the leaving water temperature of this moment is at random, and is uncontrollable, the height of leaving water temperature depends on the inlet temperature height of sewage.It is standby that cold water after the intensification of flowing out from heat exchanger 5 is delivered to hot clear water collecting pit 3 by pipeline 8.Fallen the hot sewage of temperature, be generally less than 40 ℃, be discharged in the Bilge, delivered to Sewage Disposal and handle by blow-off line 9.Hot clear water collecting pit 3 has automatic water supply device, can be according to the needs automatic water-supply of equipment, when the water in the pond when lowest water level is following, will stop heat supply water, carry out scene to need with the direct cooling water of the equipment of hot water by other pipelines and heat and change.
Four, the supply of hot water.When a certain equipment in the pretreatment process in the dyeing workshop 1 needs hot water, clarified water pump 3.1 will start automatically, prerequisite is that the water level in the hot clear water collecting pit 3 will be more than lowest water level, by clarified water pump 3.1 hot water is squeezed into thermoregulator 6 and carry out adjustment, deliver on the equipment of dyeing workshop 1 by pipeline then and use.The effect of thermoregulator 6 is: when equipment needs temperature to be higher or lower than temperature in the hot clear water collecting pit 3, carry out automatic Compensation Regulation, thermoregulator 6 is provided with normal temperature clear water percentage of import valve 6.2 and steam inlet proportioning valve 6.1, be lower than temperature in the hot clear water collecting pit 3 as technique initialization device temperature demand, will be according to setting value, open normal temperature clear water proportioning valve 6.2 and enter clear water, carry out adjustment to setting value, be higher than temperature in the hot clear water collecting pit 3 as technique initialization device temperature demand, to open steam proportioning valve 6.1 and enter steam, the warm water of bringing is heated is adjusted to design temperature.The inlet of normal temperature clear water and steam is sent after the equipment that is adjusted to is temperature required by clear water percentage of import valve 6.2 and 6.1 two proportional valve control of steam inlet proportioning valve.Set as not carrying out technological temperature, clear water percentage of import valve 6.2 and steam inlet proportioning valve 6.1 are closed, and hot water is directly squeezed into equipment by clarified water pump 3.1 through thermoregulator 6, behind the arrival equipment, again according to technological requirement lifting temperature in equipment.
More than four parts link together, be full-automatic, just can set, operate, revise at Central Control Room, also can manually control at the scene.
Claims (6)
1, a kind of method for recycling waste heat in cheese dyeing process is characterized in that, comprises the steps:
A) with high temperature dye liquor discharge of wastewater in hot sewage collecting pool;
B) by sewage pump the hot sewage in the hot sewage collecting pool is squeezed into and carried out heat exchange in the heat exchanger that is connected with cold water;
C) it is standby to flow into hot clear water collecting pit through the cold water of heat exchange; The hot sewage that has fallen temperature is discharged to and delivers to the Sewage Disposal processing in the Bilge;
D) by clarified water pump the hot water in the hot clear water collecting pit is squeezed into the equipment that needs hot water, described equipment is the equipment that uses in the pretreatment process in the cheese dyeing course.
2, a kind of method for recycling waste heat in cheese dyeing process according to claim 1 is characterized in that, also comprises the steps:
By the heat exchanger that equipment carries high temperature dye liquor waste water is carried out the heat exchange cooling with cooling water, exchange back cooling water heats up, high temperature dye liquor waste water drops to device for transferring behind the design temperature, when the dye liquor wastewater temperature more than 60 ℃ the time, it is standby to be discharged to hot sewage collecting pool, be discharged in the Bilge when being lower than 60 ℃, deliver to Sewage Disposal and handle, it is standby that the cooling water after the intensification is delivered to hot clear water collecting pit.
3, a kind of method for recycling waste heat in cheese dyeing process according to claim 1 is characterized in that, also comprises the steps:
In dyeing course, the condensed water that produces in the condensed water that Steam Heating dye liquor and self cooling forms and the conveyance conduit of steam collects directly that to deliver to hot clear water collecting pit by pipeline standby.
4, according to each described a kind of method for recycling waste heat in cheese dyeing process of claim 1 to 3, it is characterized in that, described heat exchanger cold water leaving water temperature can be controlled, according to the openings of sizes that the inlet temperature and the setting cold water leaving water temperature of hot sewage are regulated the cooling water inlet proportioning valve automatically, the flow that control cold water enters guarantees leaving water temperature.
5, according to each described a kind of method for recycling waste heat in cheese dyeing process of claim 1 to 3, it is characterized in that, described clarified water pump is squeezed into thermoregulator earlier with the hot water in the hot clear water collecting pit and is carried out adjustment, and then delivers on the equipment by pipeline and to use.
6, a kind of method for recycling waste heat in cheese dyeing process according to claim 2 is characterized in that, the temperature of described exchange back cooling water is that the flow of the heat exchanger that carries by automatic control cooling water access arrangement is controlled.
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| Application Number | Priority Date | Filing Date | Title |
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| CNA2008101164766A CN101303201A (en) | 2008-07-10 | 2008-07-10 | Method of waste heat recovery utilization in cheese dyeing course |
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| CNA2008101164766A CN101303201A (en) | 2008-07-10 | 2008-07-10 | Method of waste heat recovery utilization in cheese dyeing course |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101962894A (en) * | 2010-10-09 | 2011-02-02 | 江苏新阪神太阳能有限公司 | Solar hot water and process afterheat hot water temperature automatic control device |
| CN104178958A (en) * | 2014-08-08 | 2014-12-03 | 青岛利康源医疗器械有限公司 | Medical gauze bleaching high temperature wastewater waste heat recovery process |
| CN104998505A (en) * | 2015-07-30 | 2015-10-28 | 江苏倪家巷集团精毛纺织有限公司 | Waste heat utilization system for dyeing and finishing workshop smoke purification devices |
| CN105648690A (en) * | 2016-04-06 | 2016-06-08 | 苏州东武精密机械有限公司 | Cloth washing and rapid cooling device for dyeing machine and dyeing machine provided with cloth washing and rapid cooling device |
| CN106801885A (en) * | 2017-02-24 | 2017-06-06 | 广州睿瞰能源技术有限公司 | A kind of boiler integrated form flue gas energy recycle device |
| CN107339896A (en) * | 2017-05-17 | 2017-11-10 | 芜湖富春染织股份有限公司 | Cheese dyeing waste water residual heat utilizes device |
| CN108085908A (en) * | 2018-01-31 | 2018-05-29 | 糜晓虎 | A kind of overflow dyeing machine heat-energy recovering apparatus |
| CN111189334A (en) * | 2020-01-03 | 2020-05-22 | 江苏中迪节能科技有限公司 | Air cooler waste heat recovery system |
| CN111650112A (en) * | 2020-06-19 | 2020-09-11 | 中国核动力研究设计院 | Controllable water chemistry research and test device and method for material corrosion |
| CN112379703A (en) * | 2020-10-19 | 2021-02-19 | 嘉兴壹度智慧节能技术有限公司 | Printing and dyeing wastewater waste heat recycling system based on differential temperature regulation |
| CN117469996A (en) * | 2023-10-31 | 2024-01-30 | 云南云景林纸股份有限公司 | Pulping bleaching filtrate waste heat recovery device and method |
-
2008
- 2008-07-10 CN CNA2008101164766A patent/CN101303201A/en active Pending
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101962894A (en) * | 2010-10-09 | 2011-02-02 | 江苏新阪神太阳能有限公司 | Solar hot water and process afterheat hot water temperature automatic control device |
| CN104178958A (en) * | 2014-08-08 | 2014-12-03 | 青岛利康源医疗器械有限公司 | Medical gauze bleaching high temperature wastewater waste heat recovery process |
| CN104998505A (en) * | 2015-07-30 | 2015-10-28 | 江苏倪家巷集团精毛纺织有限公司 | Waste heat utilization system for dyeing and finishing workshop smoke purification devices |
| CN105648690A (en) * | 2016-04-06 | 2016-06-08 | 苏州东武精密机械有限公司 | Cloth washing and rapid cooling device for dyeing machine and dyeing machine provided with cloth washing and rapid cooling device |
| CN106801885A (en) * | 2017-02-24 | 2017-06-06 | 广州睿瞰能源技术有限公司 | A kind of boiler integrated form flue gas energy recycle device |
| CN107339896A (en) * | 2017-05-17 | 2017-11-10 | 芜湖富春染织股份有限公司 | Cheese dyeing waste water residual heat utilizes device |
| CN108085908A (en) * | 2018-01-31 | 2018-05-29 | 糜晓虎 | A kind of overflow dyeing machine heat-energy recovering apparatus |
| CN108085908B (en) * | 2018-01-31 | 2023-11-21 | 糜晓虎 | Dyeing machine heat recovery device |
| CN111189334A (en) * | 2020-01-03 | 2020-05-22 | 江苏中迪节能科技有限公司 | Air cooler waste heat recovery system |
| CN111650112A (en) * | 2020-06-19 | 2020-09-11 | 中国核动力研究设计院 | Controllable water chemistry research and test device and method for material corrosion |
| CN112379703A (en) * | 2020-10-19 | 2021-02-19 | 嘉兴壹度智慧节能技术有限公司 | Printing and dyeing wastewater waste heat recycling system based on differential temperature regulation |
| CN117469996A (en) * | 2023-10-31 | 2024-01-30 | 云南云景林纸股份有限公司 | Pulping bleaching filtrate waste heat recovery device and method |
| CN117469996B (en) * | 2023-10-31 | 2024-08-23 | 云南云景林纸股份有限公司 | Pulping bleaching filtrate waste heat recovery device and method |
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Open date: 20081112 |