CN102607091B - Combination method of waste heat of low-temperature industrial circulating cooling water and regional centralized heat supply - Google Patents
Combination method of waste heat of low-temperature industrial circulating cooling water and regional centralized heat supply Download PDFInfo
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- CN102607091B CN102607091B CN201210101536.3A CN201210101536A CN102607091B CN 102607091 B CN102607091 B CN 102607091B CN 201210101536 A CN201210101536 A CN 201210101536A CN 102607091 B CN102607091 B CN 102607091B
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- 238000000034 method Methods 0.000 title claims abstract description 17
- 239000002918 waste heat Substances 0.000 title claims abstract description 13
- 239000000498 cooling water Substances 0.000 title claims abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 121
- 238000010438 heat treatment Methods 0.000 claims abstract description 68
- 239000007789 gas Substances 0.000 claims abstract description 15
- 238000001816 cooling Methods 0.000 claims description 14
- 230000005855 radiation Effects 0.000 claims description 13
- 238000010792 warming Methods 0.000 claims description 12
- 238000010521 absorption reaction Methods 0.000 claims description 6
- 238000009776 industrial production Methods 0.000 claims description 6
- 238000005265 energy consumption Methods 0.000 description 11
- 230000015572 biosynthetic process Effects 0.000 description 5
- 239000003245 coal Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000000605 extraction Methods 0.000 description 4
- 239000008400 supply water Substances 0.000 description 4
- 230000008676 import Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 239000002440 industrial waste Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
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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
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
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Abstract
The invention discloses a combination method of waste heat of low-temperature industrial circulating cooling water and regional heat supply, which includes the following steps: (1) feeding the low-temperature industrial circulating cooling water to an evaporator of a water source heat pump unit through a circulating pump; and (2) feeding heat collecting hot water in a primary pipeline network into a condenser of the water source heat pump unit, feeding a part of water absorbing heat into a first heat exchange device for heat exchange and returning the same to a condenser after being cooled, meanwhile, heating pipeline water of the secondary heat supply pipeline network of A-class heat users by heat exchange, and heating the pipeline water through a gas pitch-peak boiler and supplying heat for the A-class heat users; enabling the other part of water to exchange heat with the pipeline water in the secondary heat supply pipeline network of B-class heat users and returning the same to the condenser after being cooled, meanwhile, supplying heat of the pipeline water of the secondary heat supply pipeline network after heating by heat exchange for the B-class heat users. By the combination method, energy utilization efficiency for industrial enterprises is improved.
Description
Technical field
The present invention relates to industrial cooling circulating water bootstrap system and method, relate in particular to industrial cooling circulating water waste heat and combine the method for utilizing with regional heating.
Background technology
China is in urban construction fast-developing period at present, and the ratio that building energy consumption accounts for national total energy consumption has risen to 27.5% left and right.The existing building of China has reached more than 400 hundred million m
2, and with annual newly-built 16 to 2,000,000,000 m
2speed increase.Therefore, the market demand of building energy consumption and building heating energy consumption is very big.According to the data of Chinese Research Institute for Building Sciences, northern China cities and towns house energy consumption is about 2.07 hundred million tons of mark coals, accounts for 76% of national cities and towns house energy consumption, and wherein 65% is heating energy consumption.Approximately 1.3 hundred million tons of standard coals of northern area heating energy consumption, account for 34% of national building energy consumption.Can say, northern area building heating energy consumption is the maximum part of China's building energy consumption.
Owing to being subject to the impact of China's energy resource structure, technology, economic dispatch factor, China's building and heating energy is still taking coal as main at present, main thermal source is cogeneration power plant, centralized heating boiler plant, and the district boiler room disperseing etc., both aggravated energy supply pressure, again with serious environmental pollution.Therefore, find new, low pollution or free of contamination building heating thermal source, just seem particularly urgent and necessary.
Summary of the invention
The object of the invention is to overcome the deficiency of prior art, a kind of utilization ratio that can improve primary energy is provided, reduce low-temperature industrial cooling circulating water waste heat and the regional heating integrated processes of the coal-fired consumption of heat supply and environmental pollution.
Low-temperature industrial cooling circulating water waste heat of the present invention and regional heating integrated processes, it comprises the following steps:
(1) the low-temperature industrial cooling circulating water of 20-30 DEG C, is sent into by circulating pump in the evaporimeter of water source heat pump units, emits after heat and turns back in industrial production flow process and continue to use as cooling water;
In (2) pipe networks, the heating hot water of 40-50 DEG C enters in the condenser of water resource heat pump, absorb be elevated to after heat the water part of 60-70 DEG C enter be cooled to after the first heat-exchanger rig heat exchange after 40-50 DEG C, return condenser simultaneously the first Pipeline Water in the hot user's secondary heating pipe network of category-A be warming up to after 60-65 DEG C through the first heat-exchanger rig heat exchange, by gas peak regulation boiler, the first Pipeline Water is heated to 70-75 DEG C for the hot user heating of category-A again, the first Pipeline Water is reduced to 40-45 DEG C after heat radiation, after returning to the first heat-exchanger rig heat absorption, temperature is elevated to 60-65 DEG C more again, thereby be heated to 70-75 DEG C through gas peak regulation boiler again and reenter the hot user heating formation of category-A secondary network hot water circuit, another part temperature be after the Pipeline Water heat exchange in water and the hot user's secondary heating pipe network of category-B of 60-70 DEG C, be cooled to after 35-45 DEG C, return condenser simultaneously the temperature of the second pipe water in the hot user's secondary heating pipe network of category-B after heat exchange, be warming up to 45-55 DEG C directly for the hot user heating of category-B, second pipe water is reduced to 35-45 DEG C and turns back to the second heat-exchanger rig heat exchange again after heat radiation indoor, forms secondary network hot water circuit.
Advantage of the present invention: utilize low-temperature industrial waste heat and central heating association system the current low-temperature industrial waste heat being directly discharged in environment can be converted to the thermal source of the higher temperature that can directly be utilized by hot user heating, thereby improve the efficiency of energy utilization of industrial enterprise, reduce the coal-fired consumption of primary energy and the pollutant discharge amount to environment of waiting.
Brief description of the drawings
Accompanying drawing is the structural representation of low-temperature industrial cooling circulating water waste heat of the present invention and regional heating association system.
Detailed description of the invention
Describe the present invention below in conjunction with the drawings and specific embodiments.
Low-temperature industrial cooling circulating water waste heat of the present invention and regional heating integrated processes as shown in drawings, it comprises the following steps: the low-temperature industrial cooling circulating water that (1) is 20-30 DEG C, sent into by circulating pump in the evaporimeter of water source heat pump units, emit after heat and turn back in industrial production flow process and continue to use as cooling water, in (2) pipe networks, the heating hot water of 40-50 DEG C enters in the condenser of water resource heat pump, absorb be elevated to after heat the water part of 60-70 DEG C enter be cooled to after the first heat-exchanger rig heat exchange after 40-50 DEG C, return condenser simultaneously the first Pipeline Water in the hot user's secondary heating pipe network of category-A be warming up to after 60-65 DEG C through the first heat-exchanger rig heat exchange, by gas peak regulation boiler, the first Pipeline Water is heated to 70-75 DEG C for the hot user heating of category-A again, the first Pipeline Water is reduced to 40-45 DEG C after heat radiation, after returning to the first heat-exchanger rig heat absorption, temperature is elevated to 60-65 DEG C more again, thereby be heated to 70-75 DEG C through gas peak regulation boiler again and reenter the hot user heating formation of category-A secondary network hot water circuit, another part temperature be after the Pipeline Water heat exchange in water and the hot user's secondary heating pipe network of category-B of 60-70 DEG C, be cooled to after 35-45 DEG C, return condenser simultaneously the temperature of the second pipe water in the hot user's secondary heating pipe network of category-B after heat exchange, be warming up to 45-55 DEG C directly for the hot user heating of category-B, second pipe water is reduced to 35-45 DEG C and turns back to the second heat-exchanger rig heat exchange again after heat radiation indoor, forms secondary network hot water circuit.
As a kind of device implementation of the inventive method as shown in the figure, this device comprises: (1) waste heat extraction element 1, (2) one comprise the water source heat pump units 2 of choke valve, compressor, condenser and evaporimeter, the hot water inlet of the evaporimeter of described water source heat pump units is connected with the delivery port of waste heat extraction element by the first pipeline, and the hot water outlet of the evaporimeter of described water source heat pump units is connected with the water return outlet of waste heat extraction element by the second pipeline that the first circulating pump is housed on it, (3) first heat-exchanger rig 3-1 and the second heat-exchanger rig 3-2, the delivery port of the condenser of described water source heat pump units is connected with the tube side import of the first heat-exchanger rig 3-1 by the 3rd pipeline that the second circulating pump 4-2 is housed on it, the tube side outlet of the first described heat-exchanger rig is connected with the water inlet of the condenser of water source heat pump units by the 4th pipeline that the 3rd circulating pump 4-3 is housed on it, one end of the 5th pipeline and the 3rd described pipeline that is positioned at the second circulating pump 4-2 port of export are connected and arrange and the 5th pipeline other end is connected with the tube side arrival end of the second heat-exchanger rig 3-2, one end and the 4th described pipeline that is positioned at the 3rd circulating pump 4-3 port of export that the 6th pipeline of the 4th pump 4-4 is housed on it is connected and arranges and the 6th pipeline other end is connected with the tube side port of export of the second heat-exchanger rig, the shell side outlet of the first described heat-exchanger rig is connected with one end of the first heat supply outlet pipeline that the first valve is installed on it, the shell side import of the first described heat-exchanger rig is connected with one end of the first heat supply water return pipeline that the 5th circulating pump 4-5 is installed on it, between the first described heat supply outlet pipeline and heat supply water return pipeline, be connected with the hot user 7-1 of category-A of the bright dress radiator heating of multiple employings, on the first heat supply outlet pipeline between the water inlet at the first valve and the hot user of multiple category-A, be arranged in parallel second valve has been installed on it successively, the pipeline of gas peak regulation boiler 5 and the 3rd valve, the shell side outlet of the second described heat-exchanger rig 3-2 is connected with one end of the second heat supply outlet pipeline, the shell side import of the second described heat-exchanger rig is connected with one end of the second heat supply water return pipeline that the 6th circulating pump 4-6 is installed on it, is connected with the hot user 7-2 of category-B of multiple employing radiation floor heating between the second described heat supply outlet pipeline and the second heat supply water return pipeline.Described water source heat pump units 2 is on sale in market.
The Main Function of waste heat extraction element is from industrial exhaust heat, to extract heat; The effect of water resource heat pump is to utilize the heat of low temperature exhaust heat to produce high-temperature-hot-water by contrary Carnot cycle; The effect of heat-exchanger rig is the hot water to secondary network by the exchange heat of a secondary net hot water; The effect of circulating pump is to provide power for the circulation of heating hot water; The effect of gas peak regulation boiler is in order to meet the demand of the hot user of part to higher thermal water, the part that hot user is heating system.
Embodiment 1
The low-temperature industrial cooling circulating water of (1) 25 DEG C, is sent into by circulating pump in the evaporimeter of water source heat pump units, emits after heat and turns back in industrial production flow process and continue to use as cooling water, in (2) pipe networks, the heating hot water of 45 DEG C enters in the condenser of water resource heat pump, absorb be elevated to after heat the water part of 65 DEG C enter be cooled to after the first heat-exchanger rig heat exchange after 45 DEG C, return condenser simultaneously the first Pipeline Water in the hot user's secondary heating pipe network of category-A be warming up to after 62 DEG C through the first heat-exchanger rig heat exchange, by gas peak regulation boiler, the first Pipeline Water is heated to 72 DEG C for the hot user heating of category-A again, the first Pipeline Water is reduced to 42 DEG C after heat radiation, after returning to the first heat-exchanger rig heat absorption, temperature is elevated to 62 DEG C more again, thereby be heated to 72 DEG C through gas peak regulation boiler again and reenter the hot user heating formation of category-A secondary network hot water circuit, another part temperature be after the Pipeline Water heat exchange in water and the hot user's secondary heating pipe network of category-B of 65 DEG C, be cooled to after 40 DEG C, return condenser simultaneously the temperature of the second pipe water in the hot user's secondary heating pipe network of category-B after heat exchange, be warming up to 50 DEG C directly for the hot user heatings of category-B, second pipe water is reduced to 40 DEG C and turns back to the second heat-exchanger rig heat exchange again after heat radiation indoor, forms secondary pipe network hot water circuit.
After the project of 438.93 ten thousand square metres of total area of heat-supply services is gone into operation, each heat altogether for warm season is about 1700525GJ, utilizes industrial exhaust heat 1204847GJ.Compared with direct coal heating, primary energy ratio, up to 146%, is equivalent to save every year 41110 tons of standard coals, economizes on water 296092 tons/year simultaneously, reduces CO
2discharge 107708 tons/year, reduce SO
2discharge 987 tons/year, reduce NO
xdischarge 373 tons/year.
Embodiment 2
The low-temperature industrial cooling circulating water of (1) 20 DEG C, is sent into by circulating pump in the evaporimeter of water source heat pump units, emits after heat and turns back in industrial production flow process and continue to use as cooling water, in (2) pipe networks, the heating hot water of 40 DEG C enters in the condenser of water resource heat pump, absorb be elevated to after heat the water part of 60 DEG C enter be cooled to after the first heat-exchanger rig heat exchange after 40 DEG C, return condenser simultaneously the first Pipeline Water in the hot user's secondary heating pipe network of category-A in the first heat-exchanger rig be warming up to after 60 DEG C through heat exchange, by gas peak regulation boiler, the first Pipeline Water is heated to 70 DEG C for the hot user heating of category-A again, the first Pipeline Water is reduced to 40 DEG C after heat radiation, after returning to the first heat-exchanger rig heat absorption, temperature is elevated to 60 DEG C more again, thereby be heated to 70 DEG C through gas peak regulation boiler again and reenter the hot user heating formation of category-A secondary network hot water circuit, another part temperature be after the Pipeline Water heat exchange in water and the hot user's secondary heating pipe network of category-B of 60 DEG C, be cooled to after 35 DEG C, return condenser simultaneously the temperature of the second pipe water in the hot user's secondary heating pipe network of category-B after heat exchange, be warming up to 45 DEG C directly for the hot user heatings of category-B, second pipe water is reduced to 35 DEG C and turns back to the second heat-exchanger rig heat exchange again after heat radiation indoor, forms secondary pipe network hot water circuit.
After the project of 2,000,000 square metres of total area of heat-supply services is gone into operation, each heat altogether for warm season is about 772960GJ, utilizes industrial exhaust heat 547657GJ.Compared with direct coal heating, primary energy ratio, up to 140%, is equivalent to save every year 18686 tons of standard coals, economizes on water 134584 tons/year simultaneously, reduces CO
2discharge 48953 tons/year, reduce SO
2discharge 448 tons/year, reduce NO
xdischarge 169 tons/year.
Embodiment 3
The low-temperature industrial cooling circulating water of (1) 30 DEG C, is sent into by circulating pump in the evaporimeter of water source heat pump units, emits after heat and turns back in industrial production flow process and continue to use as cooling water, in (2) pipe networks, the heating hot water of 50 DEG C enters in the condenser of water resource heat pump, absorb be elevated to after heat the water part of 70 DEG C enter be cooled to after the first heat-exchanger rig heat exchange after 50 DEG C, return condenser simultaneously the first Pipeline Water in the hot user's secondary heating pipe network of category-A be warming up to after 65 DEG C through the first heat-exchanger rig heat exchange, by gas peak regulation boiler, the first Pipeline Water is heated to 75 DEG C for the hot user heating of category-A again, the first Pipeline Water is reduced to 45 DEG C after heat radiation, after returning to the first heat-exchanger rig heat absorption, temperature is elevated to 65 DEG C more again, thereby be heated to 75 DEG C through gas peak regulation boiler again and reenter the hot user heating formation of category-A secondary network hot water circuit, another part temperature be after the Pipeline Water heat exchange in water and the hot user's secondary heating pipe network of category-B of 70 DEG C, be cooled to after 45 DEG C, return condenser simultaneously the temperature of the second pipe water in the hot user's secondary heating pipe network of category-B after heat exchange, be warming up to 55 DEG C directly for the hot user heatings of category-B, second pipe water is reduced to 45 DEG C and turns back to the second heat-exchanger rig heat exchange again after heat radiation indoor, forms secondary pipe network hot water circuit.
After the project of 3,500,000 square metres of total area of heat-supply services is gone into operation, each heat altogether for warm season is about 1502361GJ, utilizes industrial exhaust heat 1102336GJ.Compared with direct coal heating, primary energy ratio, up to 152%, is equivalent to save every year 37612 tons of standard coals, economizes on water 26617 tons/year simultaneously, reduces CO
2discharge 94030 tons/year, reduce SO
2discharge 940 tons/year, reduce NO
xdischarge 338 tons/year.
Claims (1)
1. low-temperature industrial cooling circulating water waste heat and regional heating integrated processes, is characterized in that it comprises the following steps:
(1) the low-temperature industrial cooling circulating water of 20-30 DEG C, is sent into by circulating pump in the evaporimeter of water source heat pump units, emits after heat and turns back in industrial production flow process and continue to use as cooling water;
In (2) pipe networks, be greater than 40 DEG C and be less than or equal to the heating hot water of 50 DEG C and enter in the condenser of water resource heat pump, after absorbing heat, be elevated to the water that is greater than 60 DEG C and is less than or equal to 70 DEG C, a part enter after the first heat-exchanger rig heat exchange temperature be reduced to be greater than 40 DEG C and be less than or equal to 50 DEG C after return to condenser, the first Pipeline Water in the hot user's secondary heating pipe network of category-A is warming up to after 60-65 DEG C through the first heat-exchanger rig heat exchange simultaneously, by gas peak regulation boiler, the first Pipeline Water is heated to 70-75 DEG C for the hot user heating of category-A again, the first Pipeline Water is reduced to 40-45 DEG C after heat radiation, after returning to the first heat-exchanger rig heat absorption, temperature is elevated to 60-65 DEG C more again, be heated to 70-75 DEG C through gas peak regulation boiler again and reenter the hot user heating of category-A, thereby form secondary network hot water circuit, another part temperature be greater than 60 DEG C and be less than or equal to the Pipeline Water heat exchange in water and the hot user's secondary heating pipe network of category-B of 70 DEG C after be cooled to be greater than 35 DEG C and be less than or equal to 45 DEG C after return to condenser, the temperature of the second pipe water in the hot user's secondary heating pipe network of category-B is warming up to 45-55 DEG C directly for the hot user heating of category-B after heat exchange simultaneously, second pipe water is reduced to 35-45 DEG C and turns back to the second heat-exchanger rig heat exchange again after heat radiation indoor, forms secondary network hot water circuit.
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| CN201210101536.3A CN102607091B (en) | 2012-04-09 | 2012-04-09 | Combination method of waste heat of low-temperature industrial circulating cooling water and regional centralized heat supply |
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| CN103017230B (en) * | 2012-12-05 | 2016-01-20 | 大连优力特换热设备制造有限公司 | Two for heat-exchange unit |
| CN103256756A (en) * | 2013-05-31 | 2013-08-21 | 锦西天然气化工有限责任公司 | Chemical industry device circulating water cooling, low-grade heat energy utilization and water saving system and method |
| CN104949184B (en) * | 2015-07-06 | 2018-01-23 | 珠海格力电器股份有限公司 | Water waste heat recovery heating system and water waste heat recovery heating method |
| CN108072088B (en) * | 2016-11-15 | 2024-05-14 | 长春中安鸿程伟业节能科技有限公司 | Peak regulating system of electric heating pump of central heating secondary network |
| CN108930996B (en) * | 2017-05-22 | 2024-03-26 | 山西三合盛智慧科技股份有限公司 | Multi-energy complementary heat supply system and heat supply method for energy cascade utilization |
| CN109631131B (en) * | 2018-12-21 | 2020-07-07 | 哈尔滨工业大学 | Central heating system based on thermal radiation transmission pipe |
| CN111981552B (en) * | 2020-05-22 | 2021-12-14 | 太原大四方节能环保股份有限公司 | Heat pump and gas boiler combined heating system and regulation and control method thereof |
| CN113091122B (en) * | 2021-05-11 | 2022-05-20 | 浙江英集动力科技有限公司 | Regulation and control method of afterburning type building heat exchange unit |
| CN113757772A (en) * | 2021-09-22 | 2021-12-07 | 孟伟 | Multi-heat-source complementary heating system and method |
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|---|---|---|---|---|
| EP0027147A1 (en) * | 1979-10-10 | 1981-04-22 | Jenbacher Werke AG | Heat collecting system |
| CN200986259Y (en) * | 2006-10-31 | 2007-12-05 | 冯太和 | Recirculated cooling water heating system |
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