CN101694357A - Double-circulation industrial circulating cooling water device capable of running at high concentration times - Google Patents
Double-circulation industrial circulating cooling water device capable of running at high concentration times Download PDFInfo
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- CN101694357A CN101694357A CN200910233354A CN200910233354A CN101694357A CN 101694357 A CN101694357 A CN 101694357A CN 200910233354 A CN200910233354 A CN 200910233354A CN 200910233354 A CN200910233354 A CN 200910233354A CN 101694357 A CN101694357 A CN 101694357A
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Abstract
The invention discloses a double-circulation industrial circulating cooling water device capable of running at high concentration times, which can ensure that a main production device runs safely and stably for a longer time, does not need to supplement high-quality water in a large quantity and has little pollution to the environment. The double-circulation industrial circulating cooling water device capable of running at high concentration multiple comprises an inner circulating cooling water system device, an outer circulating cooling water system device and a small-temperature-difference high-flux corrosion-resistant heat exchanger, wherein the inner circulating cooling water system device is a closed circulating cooling water system device, the outer circulating cooling water system device is an open circulating cooling water system, and the inner circulating cooling water system device and the outer circulating cooling water system device are connected by the two small-temperature-difference high-flux corrosion-resistant heat exchangers connected in parallel.
Description
Technical field
The present invention relates to a kind of industrial circulating cooling water device, but more specifically to the industrial circulating cooling water device of a kind of two circulation high concentration multiples operation.
Background technology
Serving as very important operating unit in the technological process of production of numerous industries such as recirculating cooling water system is petrochemical industry, metallurgy, thermal power generation, nuclear power, pharmacy, electronics processing, food processing, papermaking, brewage, the recirculated cooling water consumption accounts for more than 70% of water for industrial use total amount, recirculating cooling water system to reducing industrial water consumption, the conserve water resource is significant.China from the seventies from the some cover large-scale petrochemicals of external introduction device, and supportingly introduced corresponding recirculating cooling water system, changed the situation that most of at that time enterprises use the straight-line cooling water system.The use of recirculating cooling water system when guaranteeing process units safety, stable operation, has improved the service efficiency of cooling water, has significantly reduced the consumption of industrial colling.The recirculating cooling water system that present domestic industry enterprise generally uses can be divided into Enclosed Type Circulating Cooling Water System and open type recirculating cooling water system.Enclosed Type Circulating Cooling Water System is in cyclic process, cooling water is ingress of air not, and the water yield changes very little, and various mineral matters and ion concentration generally do not change in the water, cooling water cools off in air-cooled heat exchanger after raising with production medium generation exchange heat temperature.In the Enclosed Type Circulating Cooling Water System water quality of cooling water good, can keep the cooling device safety on the main process units, stable operation for a long time, need not to add high-quality water and efflux recirculated water, water-saving result is obvious, but the needed heat exchange area of air-cooled heat exchanger is very big, floor space is big, so cooling water flow can only be hundreds of～thousands of m usually
3/ h is used for production process on a small scale, as the blast furnace system of iron and steel enterprise, and certain operating unit of small power generation unit, chemical enterprise etc.At present, the cooling water system that large size industrial enterprise generally adopts is the open type recirculating cooling water system, and flow system flow all is last ten thousand stere/per hour usually.The open type recirculating cooling water system is in running, in cooling tower, realize exchange heat with the cooling water that cooling device on the main process units carries out after the exchange heat by process with abundant transmission of heat by contact of air and evaporation heat transfer, reduce water temperature, the cooling water after temperature reduces enters systemic circulation and uses.Because the continuous evaporation of cooling water steam in cooling tower in the open type recirculating cooling water system, along with running time, evaporated water accumulative total increases; And metal ion in the cooling water or mineral concentration raise gradually and are concentrated, and the burn into fouling easily takes place the cooling heat exchanger device in the process units; Meanwhile, because cooling water contacts with air, for microbial growth provides advantage, microorganism such as bacterium, algae breeds the formation biological clay in a large number in the system, can cause a series of problems such as water quality deterioration, heat transfer efficiency reduction even obstruction water cooler to take place, have a strong impact on the ordinary production of enterprise.In order to prevent that burn into fouling and microorganism from breeding in a large number, general way is to add to decide water treatment agent (inhibition, scale inhibition, bactericide mostly are organic matter greatly, are inorganic matter on a small quantity) to keep the water stabilization of cooling water in the open type recirculating cooling water system.In the open type recirculating cooling water system running, because cooling water evaporation constantly in cooling tower, moisture storage capacity constantly reduces; The cooling water that contains multiple water treatment agent and mineral matter simultaneously constantly is concentrated, and needs outwards discharging.So the open type recirculating cooling water system need give off environment there is the sewage that has a strong impact on when constantly replenishing high-quality water in a large number.The policy that high concentration multiple moves is carried out to the open type recirculating cooling water system by the Chinese government, to save great amount of water resources and to reduce effluxing of sewage.But by the effort of decades, with regard at present industrial open type recirculated cooling water technology, cycles of concentration is generally 5～8.
Little in order to solve Enclosed Type Circulating Cooling Water System operation flow, serious waste water resource and the problem that effluxes environmental pollution by water in the open type recirculating cooling water system running need the research and development New Cycle cooling water system device that a kind of water consumption is little, environmental pollution is little.
Summary of the invention
The invention solves above-mentioned the deficiencies in the prior art and problem, but provide the industrial circulating cooling water device of a kind of two circulation high concentration multiple operation, this device can guarantee the operation that main process units is more long-term, safe, stable, simultaneously do not need to add high-quality water in a large number, environmental pollution is little.
The present invention is achieved by the following technical solutions:
But the industrial circulating cooling water device of two circulation high concentration multiple of the present invention operation, it includes interior recirculating cooling water system device, outer circulation cooling water system device and the corrosion-resistant heat exchanger of little temperature difference high flux, the recirculating cooling water system device is the Enclosed Type Circulating Cooling Water System device in described, the outer circulation cooling water system device is the open type recirculating cooling water system, adopts the corrosion-resistant heat exchanger of little temperature difference high flux of two parallel connections to connect between inside and outside two recirculating cooling water system devices.
But the industrial circulating cooling water device of two circulation high concentration multiple of the present invention operation, its further technical scheme are that the flow multiplying power ratio of described interior recirculating cooling water system device and outer circulation cooling water system device is 1～1.5.
But the industrial circulating cooling water device of two circulation high concentration multiple of the present invention operation, its further technical scheme can also be the tube side surfaces of the corrosion-resistant heat exchanger of described little temperature difference high flux adopts the amorphous state nickel-phosphorus coating.
But the industrial circulating cooling water device of two circulation high concentration multiple of the present invention operation, the import and export temperature difference of the cooling water that its further technical scheme can also be described outer circulation cooling water system device in the corrosion-resistant heat exchanger of little temperature difference high flux is 6～10 ℃; Further technical scheme is that described outer circulation cooling water system device uses process primary treatment or the industry of not handling or sanitary wastewater to be cooling water again, and the operation cycles of concentration is 15～20.
But the industrial circulating cooling water device of two circulation high concentration multiple of the present invention operation, the corrosion resistant material pipe fitting that the aqueduct that its further technical scheme can also be described outer circulation cooling water system device uses anti-corrosion GRP pipe or matches with water quality.
But the industrial circulating cooling water device of two circulation high concentration multiple of the present invention operation, its further technical scheme can also be that described interior recirculating cooling water system device includes swelling water tank (1), pressure gauge (3), water circulating pump (4), flowmeter (5), the shell (11) of thermometer 7 and little temperature difference high flux corrosion-resistant multitubular heat exchanger, should use high-quality water as recirculated cooling water by interior recirculating cooling water system device, add the low amounts of water inorganic agent to keep the long-term stability of water quality, be used for transmitting at production equipment (6) and production medium generation heat, temperature reduced after the shell (11) that cooling water after the intensification is circulated to the corrosion-resistant heat exchanger of little temperature difference high flux carried out heat exchange with outer circulation cooling water in the tube side, used by the power cycle that water circulating pump (4) provides.8, but the industrial circulating cooling water device of two circulation high concentration multiple according to claim 1 and 2 operation, it is characterized in that described outer circulation cooling water system device includes fiberglass anticorrosion pipeline and pipe fitting, thermometer (13), two pressure gauges, cooling tower (16), water circulating pump (18), collecting-tank (19), moisturizing water pump (22), the tube side (12) of two flowmeters and the corrosion-resistant heat exchanger of little temperature difference high flux, this outer circulation cooling water system device adopts the industrial wastewater of process primary treatment as recirculated cooling water, adopt fiberglass anticorrosion pipeline and pipe fitting to connect each equipment, be used for transmitting with interior recirculated cooling water generation heat at the tube side (12) of the corrosion-resistant heat exchanger of little temperature difference high flux, outer circulation cooling water after the intensification is by cooling tower (16) cooling, use by the power cycle that water circulating pump (18) provides, this outer circulation cooling water system setting is stable by the moisturizing balance sysmte water yield in service, wherein collecting-tank (19) is used to regulate the water yield and the water quality of moisturizing, and moisturizing water pump (22) is used for power being provided and controlling the flow of moisturizing to moisturizing; Further technical scheme is that described cooling tower replaces with small-sized artificial swamp and lake again, cancels the relevant device of moisturizing and outer draining simultaneously, and lake is a cooling surface, by adding microbial growth in the chlorine dioxide control cooling water.
The invention has the beneficial effects as follows:
Device of the present invention is applicable to all types of industries enterprise, and scale can reach 5000m
3/ h～20000m
3/ h, cycles of concentration can reach 15～20, in the process of recirculated cooling water device operation, interior recirculated cooling water does not contact with air, the water yield changes little (replenishing small amount of leakage water), and various mineral matters and ion concentration generally do not change in the water, keep the water quality long-term stability.The outer circulation cooling water uses industry (life) waste water of process primary treatment (or not handling) as recirculated cooling water, has reduced the consumption of device to high-quality water, greatly reduces the pollution of outer draining to surrounding enviroment.
Description of drawings
Fig. 1 is the structural representation of first embodiment of the invention, second embodiment;
Fig. 2 is the structural representation of the 3rd embodiment of the present invention.
The specific embodiment
Below by specific embodiment explanation the present invention, but the present invention not merely is defined in these embodiment.
Embodiment 1
As shown in Figure 1, the internal circulation system device of the high multiple recirculating cooling water system device of two circulations of the present invention is an Enclosed Type Circulating Cooling Water System, adopts high-quality water as cooling water (cooling medium), and the water treatment agent prescription of use is: the ZnSO of 2mg/L
4, the HEDP of 15mg/L and the HPMA of 20mg/L, the design cycle flow is 10000m
3/ h, the water circulating pump 4 by power 4800kW make the cooling water circulation.Interior recirculated cooling water carries out exchange heat with the production medium in main line heat transmission equipment 6; In the corrosion-resistant heat exchanger 8 of little temperature difference high flux with carry out heat exchange from the cooling water reverse flow of outer circulation cooling device, interior recirculated cooling water is at the inlet temperature T of 8 li on the corrosion-resistant heat exchanger of little temperature difference high flux
1=42～44 ℃, outlet temperature T
2=35～37 ℃.The external circulating system device of the high multiple recirculated cooling water device of described two circulations is the open type recirculated cooling water device, and adopting the industrial wastewater through primary treatment (flocculating setting) is cooling water, and cycles of concentration is controlled to be 18, and the design cycle flow is 15000m
3/ h, the water circulating pump 18 by power 7200kW make the cooling water circulation.The outer circulation cooling water carries out heat exchange with interior recirculated cooling water reverse flow in the corrosion-resistant heat exchanger 8 of little temperature difference high flux, the outer circulation cooling water is at the inlet temperature t of 8 li on the corrosion-resistant heat exchanger of little temperature difference high flux
1=32～34 ℃, outlet temperature t
2=40～42 ℃.External circulating system keeps constant cycles of concentration by moisturizing 19 and outer draining 27, and rate of water make-up is 290m
3/ h, outer displacement are 15m
3/ h.The corrosion-resistant heat exchanger 8 of little temperature difference high flux of the high multiple recirculated cooling water device of described two circulations adopts two and is installed in parallel, can between the two, switch by by-pass valve control 9 and 10, under the situation of the normal operation of assurance device, be convenient to the corrosion-resistant heat exchanger 8 of little temperature difference high flux is carried out regular maintenance.The high multiple recirculated cooling water device water-saving amount of two circulations of the present invention is 200,000 m
3/ year, reducing outer displacement is 200,000 m
3/ year (moisturizing and draining with 8 times of cycles of concentration operations of equal scale open type recirculating cooling water system are benchmark).
Embodiment 2
As shown in Figure 1, the internal circulation system device of the high multiple recirculating cooling water system device of two circulations of the present invention is an Enclosed Type Circulating Cooling Water System, adopts high-quality water as cooling water (cooling medium), and the water treatment agent prescription of use is: the ZnS0 of 2mg/L
4, the HEDP of 15mg/L and the HPMA of 20mg/L, the design cycle flow is 15000m
3/ h, the water circulating pump 4 by power 7200kW make the cooling water circulation.Interior recirculated cooling water carries out exchange heat at production equipment 6 and production medium; In the corrosion-resistant heat exchanger 8 of little temperature difference high flux with carry out heat exchange from the cooling water reverse flow of outer circulation cooling device, interior recirculated cooling water is at the inlet temperature T of 8 li on the corrosion-resistant heat exchanger of little temperature difference high flux
1=43～45 ℃, outlet temperature T
2=35～37 ℃.The external circulating system device of the high multiple recirculated cooling water device of described two circulations is the open type recirculated cooling water device, and adopting the industrial wastewater through primary treatment is cooling water, and cycles of concentration is controlled to be 15, and the design cycle flow is 20000m
3/ h, the water circulating pump 18 by power 9600kW make the cooling water circulation.The outer circulation cooling water carries out heat exchange, the inlet temperature t of cooling water with interior recirculated cooling water reverse flow in the corrosion-resistant heat exchanger 8 of little temperature difference high flux
1=31～33 ℃, outlet temperature t
2=39～41 ℃.External circulating system keeps constant cycles of concentration by moisturizing 19 and outer draining 27, and rate of water make-up is 400m
3/ h, outer displacement are 40m
3/ h.The corrosion-resistant heat exchanger 8 of little temperature difference high flux of the high multiple recirculated cooling water device of described two circulations adopts two and is installed in parallel, can between the two, switch by by-pass valve control 9 and 10, under the situation of the normal operation of assurance device, be convenient to the corrosion-resistant heat exchanger 8 of little temperature difference high flux is carried out regular maintenance.The high multiple recirculated cooling water device water-saving amount of described two circulations is 320,000 m
3/ year, reducing outer displacement is 560,000 m
3/ year (moisturizing and draining with 8 times of cycles of concentration operations of equal scale open type recirculating cooling water system are benchmark).
Embodiment 3
As shown in Figure 2, the internal circulation system device of the high multiple recirculating cooling water system device of two circulations of the present invention adopts Enclosed Type Circulating Cooling Water System, adopts high-quality water as cooling water (cooling medium), and the water treatment agent prescription of use is: the ZnSO of 2mg/L
4, the HEDP of 15mg/L and the HPMA of 20mg/L, the design cycle flow is 5000m
3/ h, the water circulating pump 4 by power 2400kW recycles cooling water.When reactor group 28 is in hot operation (65 ℃-75 ℃), interior recirculated cooling water carries out heat exchange reactor group 28 with the production medium; When reactor group 28 is in cold operation (5 ℃-5 ℃), opening controlling valve door 29 and 30, starting refrigeration machine 32 is reactor group 28 refrigeration, interior recirculated cooling water is when reactor group 28 carries out heat exchange with the production medium, for refrigeration machine 29 provides cooling water.Interior recirculated cooling water carries out heat exchange with the reverse convection current of outer circulation cooling water in the corrosion-resistant heat exchanger 8 of little temperature difference high flux, interior recirculated cooling water is at the inlet temperature T of 8 li on the corrosion-resistant heat exchanger of little temperature difference high flux
1=42～44 ℃, outlet temperature T
2=35～37 ℃.The external circulating system device of the high multiple recirculating cooling water system device of described two circulations replaces cooling tower with small-sized artificial swamp and lake 33, the relevant device of cancellation moisturizing and outer draining, lake is a cooling surface, cycles of concentration is 20, by adding microbial growth in the chlorine dioxide control cooling water.The design cycle flow is 10000m
3/ h, suspension in the water of lake use after through preliminary sedimentation tank 36 flocculation sediments, and the water circulating pump 18 by power 4800kW makes the cooling water circulation.The outer circulation cooling water carries out heat exchange with the reverse convection current of interior recirculated cooling water in the corrosion-resistant heat exchanger 8 of little temperature difference high flux, the outer circulation cooling water is at the inlet temperature t of 8 li on the corrosion-resistant heat exchanger of little temperature difference high flux
1=32～34 ℃, outlet temperature t
2=40～42 ℃.The corrosion-resistant heat exchanger 8 of little temperature difference high flux of the high multiple recirculated cooling water device of described two circulations adopts two and is installed in parallel, can between the two, switch by by-pass valve control 9 and 10, under the situation of the normal operation of assurance device, be convenient to the corrosion-resistant heat exchanger 8 of little temperature difference high flux is carried out regular maintenance.The high multiple recirculated cooling water device water-saving amount of described two circulations is 140,000 m
3/ year, reducing outer displacement is 140,000 m
3/ year (moisturizing and draining with 8 times of cycles of concentration operations of equal scale open type recirculating cooling water system are benchmark).
Claims (9)
1. but the industrial circulating cooling water device of two circulation high concentration multiples operation, it is characterized in that this device includes interior recirculating cooling water system device, outer circulation cooling water system device and the corrosion-resistant heat exchanger of little temperature difference high flux, the recirculating cooling water system device is the Enclosed Type Circulating Cooling Water System device in described, the outer circulation cooling water system device is the open type recirculating cooling water system, adopts the corrosion-resistant heat exchanger of little temperature difference high flux of two parallel connections to connect between inside and outside two recirculating cooling water system devices.
2. but the industrial circulating cooling water device of two circulation high concentration multiple according to claim 1 operation is characterized in that the flow multiplying power ratio of described interior recirculating cooling water system device and outer circulation cooling water system device is 1～1.5.
3. but the industrial circulating cooling water device of two circulation high concentration multiple according to claim 1 operation is characterized in that the amorphous state nickel-phosphorus coating is adopted on the tube side surface of the corrosion-resistant heat exchanger of described little temperature difference high flux.
4. but the industrial circulating cooling water device of two circulation high concentration multiple according to claim 1 and 2 operation is characterized in that the import and export temperature difference of cooling water in the corrosion-resistant heat exchanger of little temperature difference high flux of described outer circulation cooling water system device is 6～10 ℃.
5. but the industrial circulating cooling water device of two circulation high concentration multiple according to claim 4 operation, it is characterized in that described outer circulation cooling water system device is used through primary treatment or the industry of not handling or sanitary wastewater is cooling water, and the operation cycles of concentration is 15～20.
6. but the industrial circulating cooling water device of two circulation high concentration multiple according to claim 1 and 2 operation is characterized in that the corrosion resistant material pipe fitting that the aqueduct of described outer circulation cooling water system device uses anti-corrosion GRP pipe or matches with water quality.
7. but the industrial circulating cooling water device of two circulation high concentration multiple according to claim 1 and 2 operation, it is characterized in that described interior recirculating cooling water system device includes swelling water tank (1), pressure gauge (3), water circulating pump (4), flowmeter (5), the shell (11) of thermometer 7 and little temperature difference high flux corrosion-resistant multitubular heat exchanger, should use high-quality water as recirculated cooling water by interior recirculating cooling water system device, add the low amounts of water inorganic agent to keep the long-term stability of water quality, be used for transmitting at production equipment (6) and production medium generation heat, temperature reduced after the shell (11) that cooling water after the intensification is circulated to the corrosion-resistant heat exchanger of little temperature difference high flux carried out heat exchange with outer circulation cooling water in the tube side, used by the power cycle that water circulating pump (4) provides.
8. but the industrial circulating cooling water device of two circulation high concentration multiple according to claim 1 and 2 operation, it is characterized in that described outer circulation cooling water system device includes fiberglass anticorrosion pipeline and pipe fitting, thermometer (13), two pressure gauges, cooling tower (16), water circulating pump (18), collecting-tank (19), moisturizing water pump (22), the tube side (12) of two flowmeters and the corrosion-resistant heat exchanger of little temperature difference high flux, this outer circulation cooling water system device adopts the industrial wastewater of process primary treatment as recirculated cooling water, adopt fiberglass anticorrosion pipeline and pipe fitting to connect each equipment, be used for transmitting with interior recirculated cooling water generation heat at the tube side (12) of the corrosion-resistant heat exchanger of little temperature difference high flux, outer circulation cooling water after the intensification is by cooling tower (16) cooling, use by the power cycle that water circulating pump (18) provides, this outer circulation cooling water system setting is stable by the moisturizing balance sysmte water yield in service, wherein collecting-tank (19) is used to regulate the water yield and the water quality of moisturizing, and moisturizing water pump (22) is used for power being provided and controlling the flow of moisturizing to moisturizing.
9. but the industrial circulating cooling water device of two circulation high concentration multiple according to claim 8 operation, it is characterized in that described cooling tower replaces with small-sized artificial swamp and lake, cancel the relevant device of moisturizing and outer draining simultaneously, lake is a cooling surface, by adding microbial growth in the chlorine dioxide control cooling water.
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Cited By (8)
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| WO2013078842A1 (en) * | 2011-12-01 | 2013-06-06 | 国家电网公司 | Circulating cooling system and method for controlling circulating cooling system |
| CN104478137A (en) * | 2014-12-18 | 2015-04-01 | 中国第一重型机械股份公司 | Energy-saving recycling combination system for industrial circulating cooling water |
| US9596786B2 (en) | 2011-12-01 | 2017-03-14 | State Grid Corporation Of China | Closed circulating water cooling apparatus and method |
| US9863653B2 (en) | 2011-12-01 | 2018-01-09 | State Grid Corporation Of China | Closed circulating water cooling apparatus and method |
| CN109029005A (en) * | 2018-09-14 | 2018-12-18 | 中国铁建重工集团有限公司 | Cooling system and development machine with the cooling system |
| CN111649521A (en) * | 2020-05-29 | 2020-09-11 | 鞍钢股份有限公司 | Method for determining water replenishing rate of circulating water cooling system through temperature concentration rate |
| CN114608343A (en) * | 2022-03-02 | 2022-06-10 | 华电渠东发电有限公司 | Circulating water energy-saving balancing device and method |
| CN115077258A (en) * | 2022-06-24 | 2022-09-20 | 湖南维尚科技有限公司 | Water cooling energy-saving method for multi-furnace group |
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2009
- 2009-10-20 CN CN200910233354A patent/CN101694357A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013078842A1 (en) * | 2011-12-01 | 2013-06-06 | 国家电网公司 | Circulating cooling system and method for controlling circulating cooling system |
| US9596786B2 (en) | 2011-12-01 | 2017-03-14 | State Grid Corporation Of China | Closed circulating water cooling apparatus and method |
| US9756762B2 (en) | 2011-12-01 | 2017-09-05 | State Grid Corporation Of China | Circulative cooling system and method for controlling circulation in the cooling system |
| US9863653B2 (en) | 2011-12-01 | 2018-01-09 | State Grid Corporation Of China | Closed circulating water cooling apparatus and method |
| CN104478137A (en) * | 2014-12-18 | 2015-04-01 | 中国第一重型机械股份公司 | Energy-saving recycling combination system for industrial circulating cooling water |
| CN109029005A (en) * | 2018-09-14 | 2018-12-18 | 中国铁建重工集团有限公司 | Cooling system and development machine with the cooling system |
| CN109029005B (en) * | 2018-09-14 | 2024-04-26 | 中国铁建重工集团股份有限公司 | Cooling system and heading machine with same |
| CN111649521A (en) * | 2020-05-29 | 2020-09-11 | 鞍钢股份有限公司 | Method for determining water replenishing rate of circulating water cooling system through temperature concentration rate |
| CN111649521B (en) * | 2020-05-29 | 2022-03-22 | 鞍钢股份有限公司 | Method for determining water replenishing rate of circulating water cooling system through temperature concentration rate |
| CN114608343A (en) * | 2022-03-02 | 2022-06-10 | 华电渠东发电有限公司 | Circulating water energy-saving balancing device and method |
| CN114608343B (en) * | 2022-03-02 | 2023-12-15 | 华电渠东发电有限公司 | Circulating water energy-saving balancing device and method |
| CN115077258A (en) * | 2022-06-24 | 2022-09-20 | 湖南维尚科技有限公司 | Water cooling energy-saving method for multi-furnace group |
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Application publication date: 20100414 |