CN105571244A - Energy-saving distributing and integrating system for industrial circulation water - Google Patents
Energy-saving distributing and integrating system for industrial circulation water Download PDFInfo
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- CN105571244A CN105571244A CN201610107237.9A CN201610107237A CN105571244A CN 105571244 A CN105571244 A CN 105571244A CN 201610107237 A CN201610107237 A CN 201610107237A CN 105571244 A CN105571244 A CN 105571244A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
- F25D17/02—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating liquids, e.g. brine
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Abstract
The invention discloses an energy-saving distributing and integrating system for industrial circulation water. The energy-saving distributing and integrating system comprises a user heat exchange device (2) and a circulating liquid pump (4) communicating with the user heat exchange device (2). The energy-saving distributing and integrating system is characterized by further comprising an evaporation type cooler (1), and a closed type cooling circulating system is formed by the evaporation type cooler (1), the user heat exchange device (2) and the circulating liquid pump (4) through a pipeline. By means of the energy-saving distributing and integrating system for industrial circulation water, the effect of reducing energy consumption can be achieved.
Description
Technical field:
The present invention relates to a kind of industrial cycle cooling system, particularly relate to the energy-conservation distribution integrated system of a kind of recirculated water.
Background technology:
Existing industrial circulating water cooling system is heat-carrying agent with water and a kind of cooling system recycled, and it forms primarily of circulating water equipment, recycle liquid pump and pipeline.Water circulation flow process as shown in Figure 1.
Cooling water in cistern is sent to each heat exchanger in system by recycle liquid pump, with process for cooling thermal medium, cooling water self-temperature raises, and becomes hot water; Hot water enters in circulating water equipment and utilizes the heat transmission belt of evaporation of water heat absorption and hot water and cold air to walk heat, thus realizes cooling; Water after cooling falls into cistern and recycles.
Circulating water equipment (common name " cooling tower ") have open type and enclosed point, accordingly, circulating water cooling system also can be divided into open type and closed two class.
In existing circulating water cooling system, in enclosed cooling tower, be provided with cooling coil, working fluid (water or other liquid) is at dish Bottomhole pressure, and the heat of fluid is outwards transmitted by pipe wall of heat exchange pipe; Pipe outer wall surface forms moisture film by spray, and arrange at heat exchanger tube top blower fan from the bottom to top the mode such as forced ventilation make heat exchanger tube outer wall and water and air carry out heat exchange simultaneously, moisture film absorbs the rapid evaporator strip of tube wall heat and walks heat and enhance that pipe is outer to conduct heat.Air is through after cooling coil, and temperature and the large increase of high humidity, enter air via fan, then do not fallen into water leg circulated sprinkling by the water evaporated and use.Although have employed the circulation of relative closure in enclosed cooling tower, its recirculated water still needs to circulate in pond, is promoting, is needing the energy consumption of at substantial.
Open type circulating water cooling system is generally used at present in chemical plant installations.The workflow of its core component---open type cooling tower is: hot water is sent to cooling tower top, is sprayed on inner-tower filling material by water distribution pipe.Air then enters (natural flow or mechanical forced flow) in tower by vacancy at the bottom of tower, meet with the moisture film on the water droplet fallen and filler and carry out heat exchange, water droplet and moisture film then turn cold gradually in decline process, and when arriving cooling pond, water temperature just in time drops to the requirement meeting cooling water.Air is then heating gradually in uphill process in tower, is finally overflowed by tower top, takes away steam simultaneously.
Due in open type cooling tower, the large-area direct and environmental exposure of recirculated water, will bring following problem:
1. water is when cooled, there is evaporation loss that water evaporation produces and solution-air is carried secretly, extraneous wind causes flies away loss.In actual moving process, owing to lacking the effective control device to evaporation capacity, often cause too much water by evaporation loss, this is particularly outstanding in air oxygen detrition area; In addition, due to the trapping of cooling tower drop and the imperfection of protection from the wind bring to fly away loss higher also comparatively general.So just cause serious water waste.
2. the evaporation of moisture makes the concentrated of salinity in recirculated water.So, the chlorion (Cl of higher concentration
-) easily cause the fast erosion of iron and steel heat transmission equipment to damage; The concentrated of recirculated water causes its hardness, and basicity and turbidity rise, and the fouling tendency of water increases a lot, causes the efficiency of technique heat transmission equipment to decline fast.In order to renovation technique heat transmission equipment corrosion damage and removing fouling, often need parking to overhaul, production is affected greatly.
3. recirculated water is with air contact process, will bring the material such as dust in air, microorganism into.In order to meet water quality demand, need arrange other filter system and to make a return journey the middle mechanical admixture that dewaters, this needs additionally to consume a large amount of power, and the flushing water of other filter device also lists the row of sewer in simultaneously; Need regularly add bactericide, algicide makes a return journey middle microorganism and the algae of dewatering.This is except increasing processing cost, and the reagent added is accumulated and also may be caused fast erosion to equipment in recirculated water; Recirculated water also needs periodical blowdown, and badly regional at component environment, blowdown flow rate is considerable.
4. water is after falling into cistern by cooling tower, and in order to realize circulation, need by liquid pump to the water makeup energy pressurised extraction in pond.Internal circulating load due to chemical plant installations recirculated cooling water is general comparatively large, and the volume of chemical plant installations own is comparatively large, as highly several meters to tens meters not etc., required energy consumption is large especially.
Summary of the invention:
The object of the present invention is to provide a kind of life-span long and the industrial cycle cooling system that energy consumption is low.
In order to achieve the above object, the present invention is achieved in that the energy-conservation distribution integrated system of a kind of industrial recirculated water, the recycle liquid pump comprising user's heat transmission equipment and be communicated with described user's heat transmission equipment, it is characterized in that: also comprise evaporative type cooler, described evaporative type cooler, described recycle liquid pump and described user's heat transmission equipment are in turn connected to form closed cooling recirculation system by pipeline.Adopt the energy-conservation distribution integrated system of recirculated water arranged like this, cooling water and cooling water are only circulated in user's heat transmission equipment, recycle liquid pump and evaporative type cooler, and without the need to cistern, cooling water, without the need to contacting with air, decreases the evaporation loss of liquid; And; the loss of evaporating owing to not having water; so the chlorion in cooling water can not be made too high; avoid the corrosion to equipment such as pipeline, heat exchanger, evaporative type coolers; decrease the tendency of water fouling; improve the efficiency of heat transmission equipment, and protect the equipment of circulating cooling system, improve the service life of equipment.
In order to improve the stability of the energy-conservation distribution integrated system of industrial circulating water further, described closed cooling recirculation system is also provided with the fluid switch for discharging the gas in cooling water, and described fluid switch is connected with the outfall sewer road of described evaporative type cooler and described user's heat transmission equipment is airtight respectively.Can avoid like this cooling water between the systems flow circuit time the system that causes because of the gas between cooling water unstable.Fluid switch inside is communicated with air, adopt such setting can ensure in cooling water circulation process, can gas in discharge line when being recycled to described fluid switch, and described fluid switch can also make recirculated water more stably circulate in the duct, ensure that the stability that the energy-conservation distribution integrated system of recirculated water runs.
In order to reduce energy consumption further, the liquid level of the cooling water of described fluid switch inside is higher than described recycle liquid pump entrance liquid level.Make like this to create difference in height between described fluid switch and described recycle liquid pump, recirculated water is when flowing to recycle liquid pump from fluid switch/user's heat transmission equipment, it can be the static energy of recycle liquid pump entrance by the potential energy converting and energy of recirculated water itself, which reduces the power of recycle liquid pump lifting needed for cooling water, save energy consumption, and then save the electric energy that recycle liquid pump uses, so adopt the energy-conservation distribution integrated system of above-mentioned industrial recirculated water can save water energy and electric energy.
Wherein, the difference in height between described fluid switch and described recycle liquid pump is more than 0.5m.The potential energy that cooling water produces at circulation time can be utilized so fully.
In order to improve the stabilizing effect of the energy-conservation distribution integrated system of industrial circulating water further, described fluid switch inside is communicated with air, and the liquid level of the cooling water of described fluid switch inside is not less than the height of the most high liquid level (HLL) of described user's heat transmission equipment Inner eycle liquid.
Preferably, the import of recycle liquid pump in described closed cooling recirculation system uses closed conduit to be directly connected with the cold side outlet of evaporative type cooler.Described like this cooling water rises to the top of user's heat transmission equipment by recycle liquid pump, from top to bottom cool user's heat transmission equipment, reaches energy-conservation effect.
Preferably, the import of recycle liquid pump in described closed cooling recirculation system exports with the hot junction of user's heat exchanger and uses closed conduit to be directly connected.Described like this cooling water rises to the top of user's heat transmission equipment by recycle liquid pump, from top to bottom cool user's heat transmission equipment, reaches energy-conservation effect.
Adopt the energy-conservation distribution integrated system of industrial recirculated water of the present invention, the beneficial effect that can bring has:
1. energy consumption is low; In the closed cooling recirculation system that the present invention is arranged, cooling water (cooling water) is after effluent fluid converter/user's heat transmission equipment, its potential energy is in order to the static energy of recycle liquid pump, make recycle liquid pump can save energy consumption needed for when promoting cooling water, when identical cooling water flow, the power of recycle liquid pump used herein is only 30 ~ 50% of open circulation water system.
2. save water resource; Cooling water in the present invention cools material in the duct, avoids the evaporation loss at cooling water, so cooling water can recycle in the system closed, saves water resource.
3. improve service life and the efficiency of equipment; Because cooling water circulates in the pipeline closed, avoid water and evaporate Cl in the cooling water caused
-the increase of concentration, avoid the corrosion and damage of the device of enclosed water cooling system, improve the service life of equipment, and then improve the service life of whole system; Solve simultaneously because of recirculated cooling water evaporation contracting follow bring in Ca
2+, Mg
2+ion increases, and user's fouling of heat exchangers is inclined to serious problem, and heat exchanger can be made to keep high heat transfer efficiency to run for a long time.
4. reduce blowdown flow rate, recirculated water in the present invention circulates in the pipeline closed, avoid cooling water to contact with microorganism with the dust in air, so filter cooling water without the need to arranging other filter system in addition, decrease the blowdown flow rate of flushing water in other filter system, and due to enclosed water cooling the circulatory system in cooling water circulation amount greatly reduce, decrease blowdown flow rate and cost of water treatment, water treatment expense is the 60%-90% of open circulation water system, cost savings cost.
Accompanying drawing illustrates:
Fig. 1 is the schematic diagram of existing vaporation-type industrial cycle cooling system;
Fig. 2 is the schematic diagram of the energy-conservation distribution integrated system of industrial recirculated water of the embodiment of the present invention 2;
Fig. 3 is the schematic diagram of the energy-conservation distribution integrated system of industrial recirculated water of the embodiment of the present invention 3;
Fig. 4 is the flow diagram of the embodiment of the present invention 2;
Fig. 5 is the flow diagram of the embodiment of the present invention 3.
Detailed description of the invention:
Be described in further detail the specific embodiment of the present invention below in conjunction with accompanying drawing, but the present invention is not limited to these embodiments, any improvement on the present embodiment essence spirit or replacement, still belong to the claims in the present invention scope required for protection.
Embodiment 1: the energy-conservation distribution integrated system of a kind of industrial recirculated water, the recycle liquid pump 4 comprising user's heat transmission equipment 2 and be communicated with described user's heat transmission equipment 2, also comprise evaporative type cooler 1, described evaporative type cooler 1, described recycle liquid pump 4 and described user's heat transmission equipment 2 are in turn connected to form closed cooling recirculation system by pipeline.
In the present embodiment, described user's heat transmission equipment 2 connected by pipeline for multiple stage heat exchanger and, and described user's heat transmission equipment 2 whole height is 10m.
When circulating cooling, cooling water is recycled to described recycle liquid pump 4 from the cold side outlet of described evaporative type cooler 1, and by described recycle liquid pump 4, described cooling water is risen to described user's heat exchange 2 equipment top, and under upper, user's heat transmission equipment 2 is cooled, after cooling water cools described user's heat transmission equipment 2, temperature raises, and is back to described evaporative type cooler 1 and carries out cooling and also again enter closed cooling recirculation system.
And in the whole circulatory system, cooling water not ingress of air all the time, the minimizing of water can not be caused because of evaporation, so cooling water can repeatedly recycle, save water resource, and decrease the increase that evaporation capacity it also avoid the content of chlorion in cooling water, thus avoid the corrosion of chlorion to system equipment and pipeline, improve the service life of the entirety of system; Solve simultaneously because of recirculated cooling water evaporation contracting follow bring in Ca2+, Mg2+ ion increase, user's fouling of heat exchangers is inclined to serious problem, and heat exchanger can be made to keep high heat transfer efficiency to run for a long time.
In addition, native system carries out filtering and impurity removing without the need to adopting other filter system to cooling water, decreases cost and the blowdown flow rate of system.
Embodiment 2: as shown in Figure 2 and Figure 4, the energy-conservation distribution integrated system of a kind of industrial recirculated water, the recycle liquid pump 4 comprising user's heat transmission equipment 2 and be communicated with described user's heat transmission equipment 2, also comprise evaporative type cooler 1, described user's heat transmission equipment 2, described recycle liquid pump 4 and described evaporative type cooler 1 are in turn connected to form closed cooling recirculation system by pipeline.Wherein, the import of recycle liquid pump in described closed cooling recirculation system exports with the hot junction of user's heat exchanger and uses closed conduit to be directly connected.
And, described closed cooling recirculation system is also provided with the fluid switch 3 for discharging the gas in circulation fluid, described fluid switch 3 respectively with the cold side outlet of described evaporative type cooler 1 and described user's heat transmission equipment 2 enter that supply mains road is airtight to be connected.Wherein, described fluid switch 3 inside is communicated with air, and the liquid level of the cooling water of described fluid switch 3 inside is identical with the height of the most high liquid level (HLL) of described user's heat transmission equipment 2 Inner eycle liquid, and the liquid level of described fluid switch is higher than the entrance liquid level of described recycle liquid pump.
In the present embodiment, described user's heat transmission equipment be multiple stage heat exchanger connected by pipeline and, and described user's heat transmission equipment whole height is 10m.
The enclosed circulation cooling system of the present embodiment uses soft water to be cooling water, and system annotates soft water to being full of enclosed circulation cooling system by fluid switch before driving, and recirculated water water equipment and pipeline gas are also discharged by fluid switch.Start recycle liquid pump, the circulated sprinkling pump of evaporative type cooler and ventilating fan successively; When cooling water is promoted to described user's heat transmission equipment top by described recycle liquid pump, owing to there is difference in height between described fluid switch and described recycle liquid pump, and described cooling water flows in the pipeline closed, so the potential energy that described cooling water flows out from described fluid switch will be converted into the static energy of recycle liquid pump porch, the operate power needed for described recycle liquid pump also reduces naturally.
And in the whole circulatory system, cooling water not ingress of air all the time, the minimizing of water can not be caused because of evaporation, so cooling water can repeatedly recycle, save water resource, and decrease the increase that evaporation capacity it also avoid the content of chlorion in cooling water, thus avoid the corrosion of chlorion to system equipment and pipeline, improve the service life of the entirety of system; Solve simultaneously because of recirculated cooling water evaporation contracting follow bring in Ca2+, Mg2+ ion increase, user's fouling of heat exchangers is inclined to serious problem, and heat exchanger can be made to keep high heat transfer efficiency to run for a long time.
In addition, be that cooling water makes the fouling tendency of user's heat transmission equipment greatly reduce with soft water, solve the heat exchange efficiency rapid drawdown because fouling brings and the normal problem of producing of impact, device long-term operation can be guaranteed.
In addition, native system carries out filtering and impurity removing without the need to adopting other filter system to cooling water, decreases cost and the blowdown flow rate of system.
The energy-conservation distribution integrated system of recirculated water that the present embodiment adopts, compared with prior art, the power of institute's use recycle liquid pump is only 40% of open circulation water system, economize on electricity aspect, counts 8000 hours running times per year, using electricity wisely 13.8 ten thousand degree.
Embodiment 3: as shown in Figure 3 and Figure 5, the energy-conservation distribution integrated system of a kind of industrial recirculated water, the recycle liquid pump 4 comprising user's heat transmission equipment 2 and be communicated with described user's heat transmission equipment 2, also comprise evaporative type cooler 1, described evaporative type cooler 1, described recycle liquid pump 4 and described user's heat transmission equipment 2 are in turn connected to form closed cooling recirculation system by pipeline.
Further, described closed cooling recirculation system is also provided with the fluid switch 3 for discharging the gas in cooling water, described fluid switch 3 is connected with the outfall sewer road of described evaporative type cooler 1 and described user's heat transmission equipment 2 is airtight respectively.Wherein, described fluid switch 3 inside is communicated with air, and the liquid level of the cooling water of described fluid switch 3 inside is higher than the height of the most high liquid level (HLL) of described user's heat transmission equipment 2 Inner eycle liquid.And the import of recycle liquid pump 4 in described closed cooling recirculation system uses closed conduit to be directly connected with the cold side outlet of evaporative type cooler 1.
In the present embodiment, described user's heat transmission equipment be multiple stage heat exchanger connected by pipeline and, and described user's heat transmission equipment whole height is 15m.
The enclosed circulation cooling system of the present embodiment uses soft water to be cooling water, and system annotates soft water to being full of enclosed circulation cooling system by fluid switch before driving, and recirculated water water equipment and pipeline gas are also discharged by fluid switch.Start recycle liquid pump, the circulated sprinkling pump of evaporative type cooler and ventilating fan successively; When cooling water is promoted to described user's heat transmission equipment top by described recycle liquid pump, owing to there is difference in height between described fluid switch and described recycle liquid pump, and described cooling water flows in the pipeline closed, so the potential energy that described cooling water flows out from described fluid switch will be converted into the static energy of recycle liquid pump porch, the operate power needed for described recycle liquid pump also reduces naturally.
And in the whole circulatory system, cooling water not ingress of air all the time, the minimizing of water can not be caused because of evaporation, so cooling water can repeatedly recycle, save water resource, and decrease the increase that evaporation capacity it also avoid the content of chlorion in cooling water, thus avoid the corrosion of chlorion to system equipment and pipeline, improve the service life of the entirety of system; Solve simultaneously because of recirculated cooling water evaporation contracting follow bring in Ca2+, Mg2+ ion increase, user's fouling of heat exchangers is inclined to serious problem, and heat exchanger can be made to keep high heat transfer efficiency to run for a long time.
In addition, be that cooling water makes the fouling tendency of user's heat transmission equipment greatly reduce with soft water, solve the heat exchange efficiency rapid drawdown because fouling brings and the normal problem of producing of impact, device long-term operation can be guaranteed.
In addition, native system carries out filtering and impurity removing without the need to adopting other filter system to cooling water, decreases cost and the blowdown flow rate of system.
The energy-conservation distribution integrated system of recirculated water that the present embodiment adopts, compared with prior art, the power of institute's use recycle liquid pump is only 50% of open circulation water system, economize on electricity aspect, counts 8000 hours running times per year, using electricity wisely 13.8 ten thousand degree.
Claims (6)
1. the energy-conservation distribution integrated system of industrial recirculated water, the recycle liquid pump (4) comprising user's heat transmission equipment (2) and be communicated with described user's heat transmission equipment (2), it is characterized in that: also comprise evaporative type cooler (1), described evaporative type cooler (1), described recycle liquid pump (4) and described user's heat transmission equipment (2) are in turn connected to form closed cooling recirculation system by pipeline.
2. the energy-conservation distribution integrated system of industrial recirculated water as claimed in claim 1, it is characterized in that: on described closed cooling recirculation system, be also provided with the fluid switch (3) for discharging the gas in cooling water, described fluid switch (3) is connected with the outfall sewer road of described evaporative type cooler (1) and described user's heat transmission equipment (2) is airtight respectively.
3. the energy-conservation distribution integrated system of industrial recirculated water as claimed in claim 2, is characterized in that: the liquid level of the cooling water that described fluid switch (3) is inner is higher than described recycle liquid pump (4) entrance liquid level.
4. the energy-conservation distribution integrated system of industrial recirculated water as claimed in claim 3, it is characterized in that: described fluid switch (3) inside is communicated with air, and the liquid level of cooling water of described fluid switch (3) inside is not less than the height of the most high liquid level (HLL) of described user's heat transmission equipment (2) Inner eycle liquid.
5. the energy-conservation distribution integrated system of the industrial recirculated water as described in claim 1,2,3 or 4, is characterized in that: the import of the recycle liquid pump (4) in described closed cooling recirculation system uses closed conduit to be directly connected with the cold side outlet of evaporative type cooler (1).
6. the energy-conservation distribution integrated system of the industrial recirculated water as described in claim 1,2,3 or 4, is characterized in that: the import of the recycle liquid pump (4) in described closed cooling recirculation system exports with the hot junction of user's heat exchanger (2) and uses closed conduit to be directly connected.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610107237.9A CN105571244A (en) | 2016-02-26 | 2016-02-26 | Energy-saving distributing and integrating system for industrial circulation water |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610107237.9A CN105571244A (en) | 2016-02-26 | 2016-02-26 | Energy-saving distributing and integrating system for industrial circulation water |
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| CN201610107237.9A Pending CN105571244A (en) | 2016-02-26 | 2016-02-26 | Energy-saving distributing and integrating system for industrial circulation water |
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Cited By (1)
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| CN110500841A (en) * | 2018-05-18 | 2019-11-26 | 张书清 | A kind of new Circulating Water Field supplement heat rejecter method |
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| US20030223890A1 (en) * | 2002-05-31 | 2003-12-04 | Lo Charles S. | Closed-loop waterbrake dynamometer fluid volumetric control system and method |
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Application publication date: 20160511 |