CN101676670A - Cooling water supply method and system for equipment - Google Patents
Cooling water supply method and system for equipment Download PDFInfo
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- CN101676670A CN101676670A CN200810013201A CN200810013201A CN101676670A CN 101676670 A CN101676670 A CN 101676670A CN 200810013201 A CN200810013201 A CN 200810013201A CN 200810013201 A CN200810013201 A CN 200810013201A CN 101676670 A CN101676670 A CN 101676670A
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Abstract
The invention discloses a water supply method and a system, in particular to a cooling water supply method and a system for equipment in the technical field of alumina. The method comprises the following steps: qualified condensed water obtained by mother liquor evaporation or autoclave digestion is sent to a soft water tank; the soft water tank sends the soft water to a plate type heat exchanger;the plate type heat exchanger carries out heat exchange on the soft water and the circulating water sent from a circulating water station; and the soft water after heat exchange is sent to mechanicalequipment needing cooling in an alumina plant for cooling. The invention is simple in composition, can be arranged near the operation places of the equipment, save construction investment and solve the problem that the pipelines are not suitable for laying due to long delivery distance. The invention can ensure the temperature and quality of the cooling water efficiently, realize cycle use of thecooling water and reduce consumption of the production water.
Description
Technical field
The present invention relates to a kind of method of supplying water and water system, relate in particular to the cooling water method and the water system of a kind of equipment in the aluminium oxide technical field.
Background technology
In alumina producing, equipment such as solution pump are in running, and mechanical seal needs water to cool off because friction can produce heat, to guarantee the normal operation of plant equipment.Because the place to use of plant equipment is different with quantity, the source of its cooling water is also different with method of supplying, and the factory that has sets up independent soft water station cooling water supply, have then with production with new water as the plant equipment cooling water.The about 0.25m of cooling water demand of general separate unit plant equipment
3/ h, flow is very little, equipment uses point far away more from the distance of circulation water station, the pressure loss of conveyance conduit is just big more, be unfavorable for the type selecting of cooling water delivery pump, and the conveyance conduit of water is positioned at underground, be subjected to the restriction of conduit slope, fed distance is far away more, and the discrepancy in elevation of pipeline laying is big more, so fed distance should not be too far away.If but all taked to build the circulation water station nearby, then could increase construction investment and operating cost greatly.
The general hardness of new water that the circulation water station provides is bigger, if long-term the use, cooling-water duct is stopped up in fouling easily, influences the stable operation of plant equipment.
Summary of the invention
For solving the problems of the technologies described above cooling water method and the water system that the invention provides a kind of equipment, purpose is that to make cooling water be that soft water can be realized recycling, and reduces the water consumption; Save construction investment, it is far away to solve fed distance, the problem that pipeline should not lay, and help the field control of water system.
For reaching the cooling water method that above-mentioned purpose the present invention is achieved in that a kind of equipment, it comprises the steps: that the qualified condensed water that mother liquid evaporation or pressure is boiled the stripping operation delivers to demineralized water tank; Demineralized water tank is delivered to plate type heat exchanger with soft water, and the recirculated water that plate type heat exchanger is sent soft water and circulation water station here carries out heat exchange; Soft water after the heat exchange is delivered in the plant equipment that alumina producer need lower the temperature cooling to be used.
The qualified condensed water that described mother liquid evaporation or pressure are boiled the stripping operation is delivered in the qualified condensate draining and is delivered to demineralized water tank by water injection pipe again.
Described qualified condensed water is directly delivered to demineralized water tank by water injection pipe and maybe will be delivered to the qualified condensed water of steam power plant and deliver to demineralized water tank by water injection pipe.
The described qualified condensed water of delivering to steam power plant is delivered to steam power plant after by qualified condensate pump.
Soft water in the described demineralized water tank is delivered to plate type heat exchanger after by softened water pump, filters through the soft water of heat exchange; Soft water after filtering is delivered in the plant equipment that needs cooling.
Described softened water pump is introduced from water injection pipe by the softened water pump water injection pipe and is started water.
A kind of cooling water system of equipment, constitute by following structure: receive the demineralized water tank that mother liquid evaporation or pressure are boiled the qualified condensed water of stripping operation, demineralized water tank is connected with the soft water heat exchange water inlet of plate type heat exchanger by pipeline, the soft water heat exchange delivery port of plate type heat exchanger is connected with filter by pipeline, plate type heat exchanger is communicated with the circulating water pipe that the circulation water station is sent here, and the plant equipment that filter need be lowered the temperature by pipeline and alumina producer is communicated with.
Described demineralized water tank is communicated with qualified condensate draining by water injection pipe.
Described water injection pipe is a two-way, and one road water injection pipe directly is communicated with demineralized water tank and qualified condensate draining; Another road water injection pipe one end is connected with demineralized water tank, and the other end is connected with qualified condensate pump outlet pipe, and qualified condensate pump outlet pipe is connected with qualified condensate pump, and qualified condensate pump is connected by pipeline with qualified condensate draining.
Described qualified condensate pump outlet pipe is connected with the power plant's pipeline that reduces phlegm and internal heat.
Be provided with softened water pump between described demineralized water tank and the plate type heat exchanger.
Described softened water pump is connected with the softened water pump water injection pipe, and the softened water pump water injection pipe is connected with water injection pipe.
Described demineralized water tank is located at underground.
On the soft water water inlet pipe and water outlet pipe of described plate type heat exchanger shunt valve is set.
On the soft water water inlet pipe and water outlet pipe of described filter shunt valve is set.
The described plant equipment outlet pipe of cooling that needs is connected with demineralized water tank.
Described condensate pump outlet pipe is connected with the return pipe of circulating water pipe by pipeline.
Advantage of the present invention and effect are as follows: the cooling water method of equipment of the present invention and water system constitute simple, can be provided with nearby as required, avoid the remote adverse effect of bringing of carrying of cooling water pipeline.Can constitute independently water system with certain production process, be convenient to operational administrative.Demineralized water tank places underground, helps component cooling water and refluxes; Plate type heat exchanger adopts the recirculated water cooling; The heat exchange area of plate type heat exchanger and recirculated water consumption are determined according to the cooling water amount of equipment, but the better controlled cooling water temperature, and applicability is strong.Filter is set removes the impurity that produces because of reasons such as equipment sealing leakage material and foulings in the cooling water, prevent that the impurity access arrangement from stopping up cooling-water duct.Filter utilizes qualified condensed water to carry out back flush, can prolong the life cycle of filter.Inlet and outlet piping at plate type heat exchanger and filter is provided with shunt valve respectively, can carry out the short circuit operation to plate type heat exchanger and filter respectively, is convenient to overhaul of the equipments.When soft water temperature or water quality meet the demands, can directly soft water be delivered to each plant equipment and use point, save energy consumption.It is distilled water through the qualified condensed water that flash distillation repeatedly produces that mother liquid evaporation in the alumina producer or pressure are boiled operation such as stripping, and its hardness, basicity all can satisfy the requirement of plant equipment to cooling water quality, can utilize nearby.
Description of drawings
Fig. 1 is the structural representation of the cooling water system of present device.
Among the figure: 1, water injection pipe; 2, softened water pump water injection pipe; 3, demineralized water tank; 4, softened water pump; 5, plate type heat exchanger; 6, filter; 7, plant equipment; 8, shunt valve; 9, qualified condensate pump outlet pipe; 10, qualified condensate draining; 11, qualified condensate pump; 12, circulation upper hose; 13, return pipe.
The specific embodiment
Below in conjunction with accompanying drawing the present invention is described in further detail, but protection scope of the present invention is not limit by embodiment.
The cooling water method of a kind of equipment of the present invention, it comprises following processing step: the qualified condensed water that mother liquid evaporation or pressure are boiled the stripping operation is delivered in the qualified condensate draining and is delivered to demineralized water tank by water injection pipe again, qualified condensed water is directly delivered to demineralized water tank by water injection pipe and maybe will be delivered to the qualified condensed water of steam power plant and deliver to demineralized water tank by water injection pipe, and the qualified condensed water of delivering to steam power plant is delivered to steam power plant after by qualified condensate pump; Soft water in the demineralized water tank is delivered to plate type heat exchanger after by softened water pump, and the softened water pump water injection pipe that pass through of softened water pump is introduced from water injection pipe and started water, and the recirculated water that plate type heat exchanger is sent soft water and circulation water station here carries out heat exchange, and the soft water that passes through heat exchange filters; Soft water after filtering is delivered in the plant equipment that alumina producer need lower the temperature cooling to be used; Water after the plant equipment cooling is delivered in the demineralized water tank.
As shown in Figure 1, the cooling water system of present device is made of following structure: receive the demineralized water tank 3 that mother liquid evaporation or pressure are boiled the qualified condensed water of stripping operation; Demineralized water tank 3 is connected with the soft water heat exchange water inlet of plate type heat exchanger 5 by pipeline, the soft water heat exchange delivery port of plate type heat exchanger 5 is connected with filter 6 by pipeline, plate type heat exchanger 5 is communicated with the circulating water pipe that the circulation water station is sent here, circulating water pipe comprises that circulation upper hose 12 and return pipe 13 constitute, and the plant equipment 7 that filter 6 need be lowered the temperature by pipeline and alumina producer is communicated with.
Operation principle of the present invention: utilize mother liquid evaporation or pressure to boil the qualified condensed water of operations such as stripping nearby, be connected water injection pipe from qualified condensate draining with the condensate pump outlet pipe, soft water is inserted the demineralized water tank of underground setting, and on the water injection pipe other draw the softened water pump water injection pipe in softened water pump water filling as starting water.Open softened water pump, the soft water in the demineralized water tank is pumped to plate type heat exchanger, the recirculated water with the circulation water station in plate type heat exchanger carries out reverse indirect heat exchange, enters filter after the soft water cooling, delivers to each after the filtration and uses point that plant equipment is cooled off.Soft water is flowed through after the plant equipment, under pipeline overbottom pressure and gravity effect, returns along gradient pipeline and to place underground demineralized water tank, recycles once more.
The temperature of soft water utilizes quantity of circulating water to control, and recirculated water returns the circulation water station after by the plate type heat exchanger heat exchange.
When overhaul of the equipments or the temperature of soft water, when water quality satisfies requiring of plant equipment, can Open valve, by shunt valve short circuit plate type heat exchanger or filter, directly deliver to each plant equipment and use point.
After filter used certain hour, Open valve carried out back flush with qualified condensed water to filter.
Because soft water is to can heat absorption heating up in the cooling procedure of plant equipment, so plate type heat exchanger is set among the present invention.In plate type heat exchanger, the low-temperature circulating water that soft water and circulation water station are sent here (about 35 ℃) is carried out reverse indirect heat exchange, reduces the temperature of cooling water, satisfies the water temperature requirement of plant equipment to cooling water.The low-temperature circulating water heat exchange is returned the circulation water station after heating up.The heat exchange area of plate type heat exchanger and recirculated water consumption are determined according to the cooling water amount of plant equipment.
Claims (17)
1, a kind of cooling water method of equipment is characterized in that it comprises by following step: the qualified condensed water that mother liquid evaporation or pressure is boiled the stripping operation is delivered to demineralized water tank; Demineralized water tank is delivered to plate type heat exchanger with soft water, and the recirculated water that plate type heat exchanger is sent soft water and circulation water station here carries out heat exchange; Soft water after the heat exchange is delivered in the plant equipment that alumina producer need lower the temperature cooling to be used.
2, the cooling water method of a kind of equipment according to claim 1 is characterized in that described mother liquid evaporation or pressure boil the qualified condensed water of stripping operation and deliver in the qualified condensate draining and deliver to demineralized water tank by water injection pipe again.
3, the cooling water method of a kind of equipment according to claim 2 is characterized in that described qualified condensed water directly delivers to demineralized water tank by water injection pipe and maybe will deliver to the qualified condensed water of steam power plant and deliver to demineralized water tank by water injection pipe.
4, the cooling water method of a kind of equipment according to claim 3 is characterized in that delivering to steam power plant after the described qualified condensed water of delivering to steam power plant is by qualified condensate pump.
5, the cooling water method of a kind of equipment according to claim 1 is characterized in that delivering to plate type heat exchanger after the interior soft water of described demineralized water tank is by softened water pump, and the soft water of process heat exchange filters; Soft water after filtering is delivered in the plant equipment that needs cooling.
6, the cooling water method of a kind of equipment according to claim 5 is characterized in that the softened water pump water injection pipe that passes through of described softened water pump is introduced the startup water from water injection pipe.
7, a kind of cooling water system of equipment is characterized in that being made of following structure: receive the demineralized water tank that mother liquid evaporation or pressure are boiled the qualified condensed water of stripping operation; Demineralized water tank is connected with the soft water heat exchange water inlet of plate type heat exchanger by pipeline, the soft water heat exchange delivery port of plate type heat exchanger is connected with filter by pipeline, plate type heat exchanger is communicated with the circulating water pipe that the circulation water station is sent here, and the plant equipment that filter need be lowered the temperature by pipeline and alumina producer is communicated with.
8, the cooling water system of a kind of equipment according to claim 7 is characterized in that described demineralized water tank is communicated with qualified condensate draining by water injection pipe.
9, the cooling water system of a kind of equipment according to claim 8 is characterized in that described water injection pipe is a two-way, and one road water injection pipe directly is communicated with demineralized water tank and qualified condensate draining; Another road water injection pipe one end is connected with demineralized water tank, and the other end is connected with qualified condensate pump outlet pipe, and qualified condensate pump outlet pipe is connected with qualified condensate pump, and qualified condensate pump is connected by pipeline with qualified condensate draining.
10, the cooling water system of a kind of equipment according to claim 9 is characterized in that described qualified condensate pump outlet pipe is connected with the power plant's pipeline that reduces phlegm and internal heat.
11, the cooling water system of a kind of equipment according to claim 7 is characterized in that being provided with softened water pump between described demineralized water tank and the plate type heat exchanger.
12, the cooling water system of a kind of equipment according to claim 11 is characterized in that described softened water pump is connected with the softened water pump water injection pipe, and the softened water pump water injection pipe is connected with water injection pipe.
13, according to the cooling water system of claim 7,8,9 or 11 described a kind of equipment, it is underground to it is characterized in that described demineralized water tank is located at.
14,, it is characterized in that on the soft water water inlet pipe and water outlet pipe of described plate type heat exchanger shunt valve being set according to the cooling water system of claim 7 or 11 described a kind of equipment.
15, the cooling water system of a kind of equipment according to claim 7 is characterized in that on the soft water water inlet pipe and water outlet pipe of described filter shunt valve being set.
16, the cooling water system of a kind of equipment according to claim 7 is characterized in that the plant equipment outlet pipe of described needs cooling is connected with demineralized water tank.
17, the cooling water system of a kind of equipment according to claim 10 is characterized in that described condensate pump outlet pipe is connected with the return pipe of circulating water pipe by pipeline.
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| Application Number | Priority Date | Filing Date | Title |
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| CN200810013201XA CN101676670B (en) | 2008-09-16 | 2008-09-16 | Cooling water supply method and system for equipment |
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| CN200810013201XA CN101676670B (en) | 2008-09-16 | 2008-09-16 | Cooling water supply method and system for equipment |
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| CN101676670B CN101676670B (en) | 2011-02-02 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2442936C1 (en) * | 2010-07-19 | 2012-02-20 | Олег Савельевич Кочетов | System of reverse water supply with heat exchangers |
| CN102840769A (en) * | 2011-06-20 | 2012-12-26 | 逸盛大化石化有限公司 | Closed cycle seawater cooling system for flow device |
| CN102852785A (en) * | 2011-06-29 | 2013-01-02 | 沈阳铝镁设计研究院有限公司 | Water circulation system for sealing and cooling device |
| CN103723750A (en) * | 2012-10-15 | 2014-04-16 | 沈阳铝镁设计研究院有限公司 | Circulating cooling method and apparatus used for roasting aluminum oxide |
| CN104538223A (en) * | 2015-01-04 | 2015-04-22 | 沈阳华德海泰电子有限公司 | Self-cleaning vacuum switch tube high-pressure aging system |
| CN114777390A (en) * | 2022-05-11 | 2022-07-22 | 广东韶钢松山股份有限公司 | Circulating water quality stabilizing method and circulating water system |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2581053B1 (en) * | 1985-04-30 | 1987-05-29 | Pechiney Aluminium | ALUMINA PRODUCTION FROM REACTIVE SILICA LOW GIBBSITE BAUXITY |
| FR2834979B1 (en) * | 2002-01-21 | 2004-02-20 | Pechiney Aluminium | SOLUBILIZATION OF CARBONATES BY RECYCLING CONDENSATES DURING THE PRESSURE ATTACK OF MONOHYDRATE BAUXITES |
| CN100408479C (en) * | 2004-12-29 | 2008-08-06 | 贵阳铝镁设计研究院 | Method for raising temperature of vaporizing raw liquor |
| CN100484876C (en) * | 2005-06-01 | 2009-05-06 | 贵阳铝镁设计研究院 | Method and equipment for using condensed water of new steam stripped under high pressure |
| CN201296672Y (en) * | 2008-12-02 | 2009-08-26 | 沈阳铝镁设计研究院 | Cooling water supply system for equipment |
-
2008
- 2008-09-16 CN CN200810013201XA patent/CN101676670B/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2442936C1 (en) * | 2010-07-19 | 2012-02-20 | Олег Савельевич Кочетов | System of reverse water supply with heat exchangers |
| CN102840769A (en) * | 2011-06-20 | 2012-12-26 | 逸盛大化石化有限公司 | Closed cycle seawater cooling system for flow device |
| CN102852785A (en) * | 2011-06-29 | 2013-01-02 | 沈阳铝镁设计研究院有限公司 | Water circulation system for sealing and cooling device |
| CN102852785B (en) * | 2011-06-29 | 2015-01-21 | 沈阳铝镁设计研究院有限公司 | Water circulation system for sealing and cooling device |
| CN103723750A (en) * | 2012-10-15 | 2014-04-16 | 沈阳铝镁设计研究院有限公司 | Circulating cooling method and apparatus used for roasting aluminum oxide |
| CN104538223A (en) * | 2015-01-04 | 2015-04-22 | 沈阳华德海泰电子有限公司 | Self-cleaning vacuum switch tube high-pressure aging system |
| CN114777390A (en) * | 2022-05-11 | 2022-07-22 | 广东韶钢松山股份有限公司 | Circulating water quality stabilizing method and circulating water system |
| CN114777390B (en) * | 2022-05-11 | 2024-01-09 | 广东韶钢松山股份有限公司 | Circulating water quality stabilization method and circulating water system |
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Owner name: SHENYANG ALUMINUM + MAGNESIUM ENGINEERING + RESEAR Free format text: FORMER NAME: SHENYANG ALUMINIUM AND MAGNESIUM DESIGN INST. |
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Address after: 110001 Heping Street, Heping District, Liaoning, Shenyang, No. 184 Patentee after: Shenyang Aluminum & Magnesium Engineering & Research Institute Co., Ltd. Address before: 110001 Heping Street, Heping District, Liaoning, Shenyang, No. 184 Patentee before: Shenyang Aluminium and Magnesium Design Institute |