CN103292378A - Recovery method and device for boiler waste water and waste heat of heat supply network - Google Patents
Recovery method and device for boiler waste water and waste heat of heat supply network Download PDFInfo
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- CN103292378A CN103292378A CN201310224185XA CN201310224185A CN103292378A CN 103292378 A CN103292378 A CN 103292378A CN 201310224185X A CN201310224185X A CN 201310224185XA CN 201310224185 A CN201310224185 A CN 201310224185A CN 103292378 A CN103292378 A CN 103292378A
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Abstract
The invention provides a recovery method and device for boiler waste water and waste heat of a heat supply network. Partial heating circulating water is introduced from a primary heat supply network and is mixed with boiler sewage water in a boiler waste water and waste heat recovery device to be hot water with the temperature of 80-90DEG C, and the hot water is fed to the heat supply network through the recovery device after being mixed. The recovery device is composed of a cylinder tank body, a spraying device, a water blocking plate, a buffering device and a water pump. The cylinder tank body is provided with an exhaust port, a cooling water inlet, a boiler waste water inlet, a water outlet and a sewage draining outlet. The spraying device is arranged on the upper portion of the cylinder tank body, the buffering device is arranged on the middle portion of the cylinder tank body, the water blocking device is arranged between the spraying device and the buffering device, and the water pump is connected with the water outlet of the cylinder tank body. The recovery method and the device for the boiler waste water and the waste heat of the heat supply network have the advantages of saving water and energy, improving economic benefits of enterprises, protecting the environment because heat will not be generated to pollute the environment, saving manpower, and being high in operation because the device is operated in a full-automatic mode.
Description
Technical field: the present invention relates to a kind of method and device that steam boiler waste water and waste heat are reclaimed, particularly a kind of for the boiler waste water of heat supply network and recovery method and the device of waste heat.
Background technology: in existing steam boiler used, for the use water quality that guarantees steam boiler meets standard, steam boiler need often carry out blowdown.The boiler blow-off branch has the row of deciding and platoon: fixed row claims again to be interrupted blowdown or bottom blow-down, and it is regularly from each circulatory system minimum point discharge unit boiler water of boiler; Platoon claims surface blow-off again, and it is continuously near the boiler water the upper drum water surface to be discharged, and mainly is too high in order to prevent salt content, basicity or silicon content in the boiler water, also can get rid of the trickle grain slag that is suspended in the water simultaneously.Platoon is after institute's sewer enters the platoon flash vessel, to carry out the dilatation flash distillation, and the indirect steam that flashes off enters oxygen-eliminating device and is used for the deoxygenation heating, and the general temperature of remaining water is about 110 ℃ after the flash distillation, and this part water enters to be decided directly to discharge behind row's flash vessel; Fixed row is that institute's sewer directly enters and decides directly discharging again behind row's flash vessel.This shows that national annual boiler is in use very big because of water and the waste heat amount that blowdown is wasted, in addition, the hot water of discharge also can produce thermal pollution to environment, and obviously, this is unfavorable for the policy of China's sustainable development; Be that the heat supply network of China will expend a large amount of energy and supply heating hot water every year on the other hand.
Summary of the invention: the objective of the invention is to, in use existing water and the deficiencies of a large amount of wastes of waste heat and the heat supply network of China will expend the present situation that a large amount of energy is supplied heating hot water every year at existing boiler, and a kind of can water and the waste heat that boiler is discharged because of blowdown effectively the recovery proposed, be used for the boiler waste water of heat supply network and recovery method and the device of waste heat.
Can realize the object of the invention by following technical proposals:
A kind of for the boiler waste water of heat supply network and the recovery method of waste heat, it is characterized in that, the retracting device of one boiler waste water and waste heat is set, by draw the heating recirculated water of getting a part is mixed into 80-90 ℃ with boiler blowdown water in the retracting device of boiler waste water and waste heat hot water from heat supply network, by the retracting device of boiler waste water and waste heat mixed hot water is sent into heat supply network again.
A kind ofly it is characterized in that for the boiler waste water of heat supply network and the retracting device of waste heat it is made up of column tank body, sprayer unit, water fender, buffer unit, water pump; The column tank body is provided with exhaust outlet, cooling water inlet, the import of boiler waste water, delivery port, sewage draining exit; Sprayer unit is located at column tank body top, and buffer unit is located at column tank body middle part, and water fender is located between sprayer unit and the buffer unit, and water pump is connected with the delivery port of column tank body.
Sprayer unit is made of water-locator and atomizer, and water-locator is made up of water inlet pipe, central hydroecium, distributive pipe; Water inlet pipe and central hydroecium UNICOM, distributive pipe and central hydroecium UNICOM; Atomizer is located on the distributive pipe.
Water fender is a plectane, has arranged evenly on the plectane that circular hole, aperture are 3～8mm.
Buffer unit by last ring baffle, go up annular riser, down annular riser, annular bottom plate four parts are formed down, constitute the flash steam circular passage between upper and lower annular riser, circular hole of uniform 3～8mm all on following annular riser and the following annular bottom plate.
For ease of maintenance, the column tank body is provided with access hole and maintenance flap.
Stable for installing, the column tank base is provided with the integral channel steel base.
Be making and easy for installation, the column tank body is made of through being connected upper cover, stylostome and low head.
For this device science is moved automatically, the column tank body is provided with liquid level gauge and switch board outward, is provided with Programmable Logic Controller and respective electric element and instrument in the switch board; Be provided with magnetic valve in the tube connector of heat supply network backflow water pipe and cooling water inlet; Be provided with electric control valve in water pump and the pipeline that heat supply network backflow water pipe is connected; Be provided with magnetic valve in the blow-off pipe that sewage draining exit is connected; Switch board respectively with liquid level gauge, heat supply network backflow water pipe and cooling water inlet tube connector in magnetic valve, be electrically connected with electric control valve in the heat supply network recirculation water pipe connected pipe road with magnetic valve, water pump, water pump in the blow-off pipe that sewage draining exit is connected.
Effect of the present invention is: 1, saved water and the energy, reduced heat supply network energy resource consumption, reduced the rate of water make-up of heat supply network, improved economic benefit of enterprises; Be example with certain county steam power plant, there are 3 75t/h, the steam boiler of 3 35t/h in this factory, boiler evaporating pressure is 3.82MPa, and 249 ℃ of stove water saturation temperature are produced about 800,000 tons of quantity of steam per year, by 2% blowdown flow rate, need discharge 249 ℃ 16000 tons in stove water whole heating season; After this project of enforcement, get final product 16000 tons of using water wisely, convert stove hydro-thermal amount per ton with local coal price and be worth about 31 yuan, then can be enterprise and increase by 496000 yuan of economic benefits, for society saves coal-fired about 827 tons, if calculate by 100 this kind steam power plants, then the water of Jie Shenging is very big with the economic benefit that produces; 2, can not produce thermal pollution to environment, protect environment; 3, manpower is saved in the full-automatic operation of device, and operation is efficient.
Below in conjunction with drawings and Examples the present invention is further set forth:
Description of drawings:
Accompanying drawing 1 is the structural representation (broken section) of apparatus of the present invention;
Accompanying drawing 2 is the front view of sprayer unit in apparatus of the present invention;
Accompanying drawing 3 is the vertical view of sprayer unit in apparatus of the present invention;
Accompanying drawing 4 is the cutaway view of buffer unit in apparatus of the present invention;
Accompanying drawing 5 is operation control structure schematic diagram of the present invention.
The specific embodiment:
A kind of for the boiler waste water of heat supply network and the recovery method of waste heat, it is the retracting device that a boiler waste water and waste heat are set, by draw the heating recirculated water of getting a part is mixed into 80-90 ℃ with boiler blowdown water in the retracting device of boiler waste water and waste heat hot water from heat supply network, by the retracting device of boiler waste water and waste heat mixed hot water is sent into heat supply network again.
Referring to accompanying drawing 1,2,3,4,5, a kind of for the boiler waste water of heat supply network and the retracting device of waste heat, it is made up of column tank body 1, sprayer unit 2, water fender 3, buffer unit 4, water pump 5; Column tank body 1 is made of through being connected upper cover 1A, stylostome 1B and low head 1C; Column tank body 1 is provided with exhaust outlet 7, cooling water inlet 8, boiler waste water import 9, delivery port 10, sewage draining exit 11; Sprayer unit 2 is located at column tank body 1 top, and buffer unit 4 is located at column tank body 1 middle part, and water fender 3 is located between sprayer unit 2 and the buffer unit 4, and water pump 5 is connected with the delivery port 10 of column tank body 1.Sprayer unit 2 is made of water-locator and atomizer 2A, and water-locator is made up of water inlet pipe 2C, central hydroecium 2B, distributive pipe 2D; Water inlet pipe 2C and central hydroecium 2B UNICOM, distributive pipe 2D and central hydroecium 2B UNICOM; Atomizer 2A is located on the distributive pipe 2D, and the effect of water-locator is to make to be installed on that every distributive pipe 2D obtains identical hydraulic pressure on the water-locator, thereby can distribute cooling water equably.Water fender 3 is a plectane, has arranged evenly on the plectane that circular hole, aperture are 3～8mm.Buffer unit 3 is made up of last ring baffle 3A, last annular riser 3B, following annular riser 3C, following annular bottom plate 3D four parts; Go up annular riser 3B, constitute the flash steam circular passage between the annular riser 3C down; Following circular hole of uniform 3～8mm all on annular riser 3C and the following annular bottom plate 3D.For ease of maintenance, column tank body 1 is provided with access hole and maintenance flap 12.Stable for installing, column tank body 1 bottom is provided with integral channel steel base 13, and water pump 5 and tank body 1 all are installed on the integral channel steel base 13.For this device science is moved automatically, be provided with liquid level gauge 14 and switch board 15 outside the column tank body 1.Be provided with Programmable Logic Controller and respective electric element and instrument in the switch board 15.Be provided with magnetic valve 17 in the tube connector 16 of heat supply network circulating water pipe 22 and cooling water inlet 8; Be provided with magnetic valve 19 in the blow-off pipe 18 that sewage draining exit 11 is connected; Be provided with electric control valve 21 in water pump 5 and the pipeline 20 that heat supply network circulating water pipe 22 is connected; Switch board 15 respectively with liquid level gauge 14, heat supply network circulating water pipe 22 and cooling water inlet tube connector 16 in magnetic valve 17, be electrically connected with electric control valve 21 in heat supply network circulating water pipe 22 connecting pipes 20 with magnetic valve 19, water pump 5, water pump 5 in the blow-off pipe 18 that sewage draining exit 11 is connected;
The work flow of this device is: power supply and the meter switch of opening switch board 15, according to the liquid level signal of liquid level gauge 14 detections and the setting of Programmable Logic Controller, magnetic valve 16 is opened automatically, magnetic valve 19 cuts out automatically, the recirculation water of heat supply network forms vaporific water droplet and is full of whole tank body upper space to the whereabouts by entering in the sprayer unit 2 through cooling water inlet 8 in the heat supply network circulating water pipe 22; The sewage that boiler is arranged surely with platoon enters in the buffer unit 4 by boiler waste water import 9, produces a large amount of flash steams at this, and it rises and become 80-90 ℃ of hot water with the cooling water condensation by mixing that atomizes from buffer unit 4 back of coming out.The function of water fender 3 is to increase carbonated drink contact area and time, allows the abundant condensation by mixing of flash steam.Mixed 80-90 ℃ hot water is assembled in column tank body 1 bottom, switch board 15 in time starts water pump 5 hot water is delivered in the heat supply network circulating water pipe 22 according to liquid level signal, and according to liquid level signal electric control valve 21 apertures is regulated, it is constant that tank level is remained, and avoids fluctuation.
Device is control and safe operation automatically: because this device recovery is the higher boiler blowdown water of pressure, the variation of heating network pressure can cause may breaking down in inflow fluctuation and electrically operated valve, water pump and the operation of electric element process, for make this device can science, automatically, operation safely, prevent that local fault from causing bad result's generation, set multiple safeguard procedures in control system: 5 ultralow water level shelves of liquid level signal action gear: L, M ordinary water level shelves, H1 high water level shelves, H2 superelevation water level shelves, H3 peak level shelves are arranged in program setting; One, ultralow water level shelves L is the protection liquid level, prevents that tank body water from draining back water pump 5 and doing and change, and water pump 5 manually and all can not start automatically when liquid level is lower than L; Two, ordinary water level shelves M, near liquid level minor fluctuations M during conventional operation; Three, high water level shelves H1, excessive when inflow, water level still rises to H1 during 5 operations of water pump, and another reserve pump 5 started automatically and sent water this moment, and when water level was got back to normal liquid level M, wherein a water pump 5 quit work, and recovers single pump work state; Four, superelevation water level shelves H2, when two water pumps 5 send water simultaneously, water level still rises to H2, and this moment, entering water electromagnetic valve 17 was closed, and waited to recover to open behind the ordinary water level M again, and alarm lamp is bright simultaneously; Five, peak level shelves H3 adopts still can not stop water level to rise to H3 the time when above measure, and magnetic valve 19 is opened automatically, urgent sluicing, and this device is the same with conventional flash vessel function, simultaneously warning.
Claims (9)
1. one kind is used for the boiler waste water of heat supply network and the recovery method of waste heat, it is characterized in that, the retracting device of one boiler waste water and waste heat is set, by draw the heating recirculated water of getting a part is mixed into 80-90 ℃ with boiler blowdown water in the retracting device of boiler waste water and waste heat hot water from heat supply network, by the retracting device of boiler waste water and waste heat mixed hot water is sent into heat supply network again.
2. one kind is used for the boiler waste water that is used for heat supply network of said method and the retracting device of waste heat, it is characterized in that it is made up of column tank body, sprayer unit, water fender, buffer unit, water pump; The column tank body is provided with exhaust outlet, cooling water inlet, the import of boiler waste water, delivery port, sewage draining exit; Sprayer unit is located at column tank body top, and buffer unit is located at column tank body middle part, and water fender is located between sprayer unit and the buffer unit, and water pump is connected with the delivery port of column tank body.
3. it is characterized in that for the boiler waste water of heat supply network and the retracting device of waste heat that by claim 2 is described sprayer unit is made of water-locator and atomizer, water-locator is made up of water inlet pipe, central hydroecium, distributive pipe; Water inlet pipe and central hydroecium UNICOM, distributive pipe and central hydroecium UNICOM; Atomizer is located on the distributive pipe.
4. it is characterized in that for the boiler waste water of heat supply network and the retracting device of waste heat that by claim 2 is described water fender is a plectane, arranged evenly on the plectane that circular hole, aperture are 3～8mm.
5. by claim 2 described boiler waste water and waste-heat recovery device for heat supply network, it is characterized in that, buffer unit is made up of last ring baffle, last annular riser, following annular riser, following annular bottom plate four parts, between upper and lower annular riser, constitute the flash steam circular passage, circular hole of uniform 3～8mm all on following annular riser and the following annular bottom plate.
6. it is characterized in that for the boiler waste water of heat supply network and the retracting device of waste heat by claim 2 is described that the column tank body is provided with access hole and maintenance flap.
7. it is characterized in that for the boiler waste water of heat supply network and the retracting device of waste heat that by claim 2 is described the column tank base is provided with the integral channel steel base.
8. it is characterized in that for the boiler waste water of heat supply network and the retracting device of waste heat that by claim 2 is described the column tank body is made of through being connected upper cover, stylostome and low head.
9. describedly it is characterized in that for the boiler waste water of heat supply network and the retracting device of waste heat the column tank body is provided with liquid level gauge and switch board outward by claim 2 or 3 or 4 or 5 or 6 or 7 or 8, be provided with Programmable Logic Controller and respective electric element and instrument in the switch board; Be provided with magnetic valve in the tube connector of heat supply network backflow water pipe and cooling water inlet; Be provided with electric control valve in water pump and the pipeline that heat supply network backflow water pipe is connected; Be provided with magnetic valve in the blow-off pipe that sewage draining exit is connected; Switch board respectively with liquid level gauge, heat supply network backflow water pipe and cooling water inlet tube connector in magnetic valve, be electrically connected with electric control valve in the heat supply network recirculation water pipe connected pipe road with magnetic valve, water pump, water pump in the blow-off pipe that sewage draining exit is connected.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310224185XA CN103292378A (en) | 2013-05-27 | 2013-05-27 | Recovery method and device for boiler waste water and waste heat of heat supply network |
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| CN201310224185XA CN103292378A (en) | 2013-05-27 | 2013-05-27 | Recovery method and device for boiler waste water and waste heat of heat supply network |
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| CN201310224185XA Pending CN103292378A (en) | 2013-05-27 | 2013-05-27 | Recovery method and device for boiler waste water and waste heat of heat supply network |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106338057B (en) * | 2016-08-26 | 2018-08-28 | 盛嘉军 | Steam boiler blowdown heat reclamation device |
| CN109578957A (en) * | 2018-11-30 | 2019-04-05 | 天津市布加迪环保科技发展有限公司 | A kind of mesohigh continuous blowdown system of boiler system |
| CN110107881A (en) * | 2019-05-09 | 2019-08-09 | 潍坊福来锅炉节能设备科技有限公司 | A kind of boiler blow-off pipeline sewage recovering system |
| CN111792687A (en) * | 2020-07-07 | 2020-10-20 | 西安热工研究院有限公司 | Heat supply network drainage waste heat recovery device and method for thermal power plant based on seawater desalination technology |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106338057B (en) * | 2016-08-26 | 2018-08-28 | 盛嘉军 | Steam boiler blowdown heat reclamation device |
| CN109578957A (en) * | 2018-11-30 | 2019-04-05 | 天津市布加迪环保科技发展有限公司 | A kind of mesohigh continuous blowdown system of boiler system |
| CN110107881A (en) * | 2019-05-09 | 2019-08-09 | 潍坊福来锅炉节能设备科技有限公司 | A kind of boiler blow-off pipeline sewage recovering system |
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| CN111792687A (en) * | 2020-07-07 | 2020-10-20 | 西安热工研究院有限公司 | Heat supply network drainage waste heat recovery device and method for thermal power plant based on seawater desalination technology |
| CN111792687B (en) * | 2020-07-07 | 2024-01-19 | 西安热工研究院有限公司 | Heat supply network drainage waste heat recovery device and method for thermal power plant based on sea water desalination technology |
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Application publication date: 20130911 |