CN203336877U - Chemical engineering device circulating water cooling and low-grade heat energy utilizing and water-saving system - Google Patents
Chemical engineering device circulating water cooling and low-grade heat energy utilizing and water-saving system Download PDFInfo
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Abstract
A chemical engineering device circulating water cooling and low-grade heat energy utilizing and water-saving system comprises a water cooler (1), a water cooling tower (2), a heat pump system and a heating system (4). Every heat pump (3) of the heat pump system comprises an evaporator (5), a compressor (6) and a condenser (7). The output end of the water cooler (1) is connected with the input end of the evaporator (5) of every heat pump (3) in the heat pump system through a pipe, the output end of the evaporator (5) of every heat pump (3) is connected with the top end of the water cooling tower (2) through a pipe, and the bottom end of the water cooling tower (2) is connected with the water cooler (1) through a pipe. The chemical engineering device circulating water cooling and low-grade heat energy utilizing and water-saving system overcomes the shortcomings in the prior art, reduces circulating water cooling cost, improves low-grade heat energy utilizing efficiency, saves energy and reduces emission.
Description
Technical field
The utility model relates to the utilization of circulating water cooling and low grade heat energy, and chemical plant installations circulating water cooling and low grade heat energy utilization and water-saving system are provided especially.
Background technology
In actual Chemical Manufacture, have a large amount of recirculated water using, and quantity of circulating water is very large.Usually, what these recirculated waters were entrained is all low grade heat energy, temperature is 30-40 ℃ of left and right, be all generally in cooling tower by with cross-ventilation, part water is evaporated in air and convection heat transfer' heat-transfer by convection makes water for cooling, the convection current of air, some employing free convection modes, have plenty of that fan by being arranged on tower top provides, consume a large amount of electric energy.Evaporation of water has lost the water resource of a large amount of preciousnesses, and the entrained tow taste heat of recirculated water is brought in environment simultaneously, has caused the serious wasting of resources.
Suppose certain chemical plant installations, its quantity of circulating water be 10000 tons/time, 20 ℃, upper water, 30 ℃, backwater, the temperature difference is 10 ℃, the thermal capacitance 1kcal/ of water (kg ℃), the thermic load of its recirculated water be 10000 tons/time * 1000kg/ ton * 1kcal/ (kg ℃) * 10 ℃=1*10
8during kcal/, be equivalent to 1.16*10
5kw, such thermic load is very common on chemical plant installations.And for the moisture of discharging these caloric requirements evaporation normally quantity of circulating water 1.5%, be equivalent to 150 tons/time, simultaneously, due to evaporation, the salinity in water is constantly concentrated, and the part water that also needs to drain is to discharge salinity, suppose that cycles of concentration is 4, the water yield that needs to discharge again be 50 tons/time.If adopt non-evaporated form to reduce circulating water temperature, this part 150+50 ton/time water can be saved.Simultaneously, if adopt other method to reduce circulating water temperature, the cooling tower 2 cooling blower fans in top also can be stopped transport, corresponding this part electric energy of having saved, and corresponding electrical power is 500kw.
Therefore, how to improve the utilization ratio of low grade heat energy, energy-saving and emission-reduction, become this area problem demanding prompt solution
the utility model content
In view of this, the utility model provides a kind of chemical plant installations circulating water cooling and low grade heat energy utilization and water-saving system and method, has overcome the deficiencies in the prior art, has reduced the cost of circulating water cooling, improved the utilization ratio of low grade heat energy, energy-saving and emission-reduction.
It is chemical plant installations circulating water cooling and low grade heat energy utilization and water-saving system that the utility model solves the technical scheme that its technical problem adopts, wherein,
Described system is drawn together water cooler 1, cooling tower 2, heat pump, heating system 4;
Each heat pump 3 of described heat pump includes evaporimeter 5, compressor 6, condenser 7;
Wherein, described water cooler 1 output is connected with evaporimeter 5 inputs of heat pump in heat pump 3 by pipeline, and evaporimeter 5 outputs of heat pump 3 are connected with cooling tower 2 tops by pipeline, and cooling tower 2 bottoms are connected with water cooler 1 by pipeline;
In described heat pump, the output of the condenser 7 of heat pump 3 is connected with the input of heating system by pipeline; The output of described heating system is connected with the input of condenser 7.
Chemical plant installations circulating water cooling described in the utility model and low grade heat energy utilization and water-saving system, wherein,
Described device comprises water cooler 1, heat pump, heating system 4;
Each heat pump 3 of described heat pump includes evaporimeter 5, compressor 6, condenser 7;
Wherein, described water cooler 1 output is connected with evaporimeter 5 inputs of heat pump in heat pump 3 by pipeline, and evaporimeter 5 outputs of heat pump 3 are connected with water cooler 1 by pipeline;
In described heat pump, the output of the condenser 7 of heat pump 3 is connected with the input of heating system by pipeline; The output of described heating system is connected with the input of condenser 7.
Chemical plant installations circulating water cooling described in the utility model and low grade heat energy utilization and water-saving system, wherein, described heat pump comprises at least one heat pump 3.
Chemical plant installations circulating water cooling described in the utility model and low grade heat energy utilization and water-saving system, wherein,
When described heat pump comprises Liang Tai and two above heat pumps 3, the formation heat pump is connected in parallel between each heat pump 3;
Described heat pump and water cooler 1, heating system 4 are connected in series.
Chemical plant installations circulating water cooling described in the utility model and low grade heat energy utilization and water-saving system, wherein,
When described heat pump comprises Liang Tai and two above heat pumps 3, after each heat pump 3 first and different heating systems 4 are connected in series, more in parallel.
Chemical plant installations circulating water cooling described in the utility model and low grade heat energy utilization and water-saving system, wherein,
Described evaporimeter 5 is connected with condenser 7 with second channel 10 by first passage 9;
Described first passage 9 is for delivery of the heating agent of vaporization; Described second channel 10 is for delivery of liquid heating agent;
Described first passage 9 refers to that evaporimeter 5 upper ends are connected with compressor 6, the passage that compressor 6 is connected with condenser 7 upper ends;
Described second channel 10 refers to the passage that condenser 7 lower ends are connected with evaporimeter 5 lower ends; Be provided with pressure-reducing valve 8 on described second channel 10.
Chemical plant installations circulating water cooling described in the utility model and low grade heat energy utilization and water-saving method comprise three circulations:
The first circulation is the circulation of chemical plant installations recirculated water: the recirculated water of the heat of chemical plant installations is transported to the evaporimeter 5 of heat pump from the output of water cooler 1 by pipeline, transfer heat to liquid heating agent, makes the heating agent vaporization; The recirculated water of heat is after evaporimeter 5 transfers heat to liquid heating agent, self temperature reduces, be transported to cooling tower 2 tops from the evaporimeter 5 of heat pump by pipeline, then be transported to each water cooler 1 of chemical plant installations by pipeline by cooling tower 2 bottoms, complete the circulation of chemical plant installations recirculated water;
The second circulation is the circulation of the heating agent of heat pump: in evaporimeter 5, the heating agent of vaporization is transported to compressor 6, promoting potential temperature through compressor 6 heats, then be transported to the condenser 7 of heat pump, with carry the low temperature heating water heat exchange condensation of returning from heating equipment, the heating agent liquefy of vaporization, be transmitted back to evaporimeter 5 by pressure-reducing valve 8 again, complete the circulation of heating agent;
The 3rd circulation is the circulation of heating water: be transported to the low temperature heating water of condenser 7 from heating equipment by pipeline, after the heating medium for heating be vaporized, then flow to heating equipment by pipeline, complete the circulation of heating water;
Adopt the advantage of such scheme to be, in the time can not normally using the heating circulation for the chemical plant installations circulating water cooling, can use cooling tower to be lowered the temperature.
Chemical plant installations circulating water cooling described in the utility model and low grade heat energy utilization and water-saving method, also can adopt following method to realize, described method comprises three circulations:
The first circulation is the circulation of chemical plant installations recirculated water: the recirculated water of the heat of chemical plant installations is transported to the evaporimeter 5 of heat pump from the output of water cooler 1 by pipeline, transfer heat to liquid heating agent, makes the heating agent vaporization; The recirculated water of heat is after evaporimeter 5 transfers heat to liquid heating agent, and self temperature reduces, and from the evaporimeter 5 of heat pump, is transported to each water cooler 1 of chemical plant installations by pipeline, completes the circulation of chemical plant installations recirculated water;
The second circulation is the circulation of the heating agent of heat pump: in evaporimeter 5, the heating agent of vaporization is transported to compressor 6, promoting potential temperature through compressor 6 heats, then be transported to the condenser 7 of heat pump, with carry the low temperature heating water heat exchange condensation of returning from heating equipment, the heating agent liquefy of vaporization, be transmitted back to evaporimeter 5 by pressure-reducing valve 8 again, complete the circulation of heating agent;
The 3rd circulation is the circulation of heating water: be transported to the low temperature heating water of condenser 7 from heating equipment by pipeline, after the heating medium for heating be vaporized, then flow to heating equipment by pipeline, complete the circulation of heating water.
Chemical plant installations circulating water cooling described in the utility model and low grade heat energy utilization and water-saving method, wherein, the circulation of the circulation of the heating agent of described chemical circulation water circulation, heat pump, heating water is isolation mutually.
Chemical plant installations circulating water cooling described in the utility model and low grade heat energy utilization and water-saving system and method, the recirculated water that carries low grade heat energy of chemical plant installations output, traditional approach is lowered the temperature by the mode of cooling tower 2, can cause a large amount of energy wastes like this, adopt chemical plant installations circulating water cooling described in the utility model and low grade heat energy utilization and water-saving system and method, the recirculated water that carries low grade heat energy of chemical plant installations output is input in household heating equipment, process by circulating water cooling provides heat for heating equipment, improved the utilization ratio of low grade heat energy, saved the cooling cost of chemical plant installations recirculated water, energy-saving and emission-reduction have been realized.
The accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, below will the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described, apparently, accompanying drawing in the following describes is only embodiment more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is that chemical plant installations is the circulating water cooling schematic diagram;
Fig. 2 is heating equipment heating schematic diagram;
Fig. 3 is chemical plant installations circulating water cooling and low grade heat energy utilization and water-saving system schematic diagram;
Fig. 4 is for adopting chemical plant installations circulating water cooling and low grade heat energy utilization and the water-saving system schematic diagram of two heat pumps.
Wherein, 11-boiler; The 12-blower fan.
The specific embodiment
The utility model provides chemical plant installations circulating water cooling and low grade heat energy utilization and water-saving system and method, has overcome the deficiencies in the prior art, has reduced the cost of circulating water cooling, has improved the utilization ratio of low grade heat energy, energy-saving and emission-reduction
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is only the utility model part embodiment, rather than whole embodiment.Embodiment based in the utility model, those of ordinary skills are not making under the creative work prerequisite the every other embodiment obtained, and all belong to the scope of the utility model protection.
Please refer to Fig. 1,2,3,4, Fig. 1 is that chemical plant installations is the circulating water cooling schematic diagram; Fig. 2 is heating equipment heating schematic diagram; Fig. 3 is chemical plant installations circulating water cooling and low grade heat energy utilization and water-saving system schematic diagram; Fig. 4 is for adopting chemical plant installations circulating water cooling and low grade heat energy utilization and the water-saving system schematic diagram of two heat pumps 3.
The described chemical plant installations circulating water cooling of the present embodiment and low grade heat energy utilization and water-saving method comprise three circulations:
The first circulation is the circulation of chemical plant installations recirculated water: the recirculated water of the heat of chemical plant installations is transported to the evaporimeter 5 of heat pump from the output of water cooler 1 by pipeline, transfer heat to liquid heating agent, makes the heating agent vaporization; The recirculated water of heat is after evaporimeter 5 transfers heat to liquid heating agent, self temperature reduces, be transported to cooling tower 2 tops from the evaporimeter 5 of heat pump by pipeline, then be transported to each water cooler 1 of chemical plant installations by pipeline by cooling tower 2 bottoms, complete the circulation of chemical plant installations recirculated water;
The second circulation is the circulation of the heating agent of heat pump: in evaporimeter 5, the heating agent of vaporization is transported to compressor 6, promoting potential temperature through compressor 6 heats, then be transported to the condenser 7 of heat pump, with carry the low temperature heating water heat exchange condensation of returning from heating equipment, the heating agent liquefy of vaporization, be transmitted back to evaporimeter 5 by pressure-reducing valve 8 again, complete the circulation of heating agent;
The 3rd circulation is the circulation of heating water: be transported to the low temperature heating water of condenser 7 from heating equipment by pipeline, after the heating medium for heating be vaporized, then flow to heating equipment by pipeline, complete the circulation of heating water; Adopt the advantage of such scheme to be, in the time can not normally using the heating circulation for the chemical plant installations circulating water cooling, can use cooling tower to be lowered the temperature.
The described chemical plant installations circulating water cooling of the present embodiment and low grade heat energy utilization and water-saving method, also can adopt following method to realize, described method comprises three circulations:
The first circulation is the circulation of chemical plant installations recirculated water: the recirculated water of the heat of chemical plant installations is transported to the evaporimeter 5 of heat pump from the output of water cooler 1 by pipeline, transfer heat to liquid heating agent, makes the heating agent vaporization; The recirculated water of heat is after evaporimeter 5 transfers heat to liquid heating agent, and self temperature reduces, and from the evaporimeter 5 of heat pump, is transported to each water cooler 1 of chemical plant installations by pipeline, completes the circulation of chemical plant installations recirculated water;
The second circulation is the circulation of the heating agent of heat pump: in evaporimeter 5, the heating agent of vaporization is transported to compressor 6, promoting potential temperature through compressor 6 heats, then be transported to the condenser 7 of heat pump, with carry the low temperature heating water heat exchange condensation of returning from heating equipment, the heating agent liquefy of vaporization, be transmitted back to evaporimeter 5 by pressure-reducing valve 8 again, complete the circulation of heating agent;
The 3rd circulation is the circulation of heating water: be transported to the low temperature heating water of condenser 7 from heating equipment by pipeline, after the heating medium for heating be vaporized, then flow to heating equipment by pipeline, complete the circulation of heating water.
Further, the described chemical plant installations circulating water cooling of the present embodiment and low grade heat energy utilization and water-saving method, wherein, the circulation of the circulation of the heating agent of described chemical circulation water circulation, heat pump, heating water is isolation mutually.
Further, the described chemical plant installations circulating water cooling of the present embodiment and low grade heat energy utilization and water-saving system, wherein,
Described system is drawn together water cooler 1, cooling tower 2, heat pump, heating system 4;
Each heat pump 3 of described heat pump includes evaporimeter 5, compressor 6, condenser 7;
Wherein, described water cooler 1 output is connected with evaporimeter 5 inputs of heat pump in heat pump 3 by pipeline, and evaporimeter 5 outputs of heat pump 3 are connected with cooling tower 2 tops by pipeline, and cooling tower 2 bottoms are connected with water cooler 1 by pipeline;
In described heat pump, the output of the condenser 7 of heat pump 3 is connected with the input of heating system by pipeline; The output of described heating system is connected with the input of condenser 7.
In addition, the present embodiment also can adopt chemical plant installations circulating water cooling as described below and low grade heat energy utilization and water-saving system, wherein,
Described device comprises water cooler 1, heat pump, heating system 4;
Each heat pump 3 of described heat pump includes evaporimeter 5, compressor 6, condenser 7;
Wherein, described water cooler 1 output is connected with evaporimeter 5 inputs of heat pump in heat pump 3 by pipeline, and evaporimeter 5 outputs of heat pump 3 are connected with water cooler 1 by pipeline;
In described heat pump, the output of the condenser 7 of heat pump 3 is connected with the input of heating system by pipeline; The output of described heating system is connected with the input of condenser 7.
The described chemical plant installations circulating water cooling of the present embodiment and low grade heat energy utilization and water-saving system, wherein, described heat pump comprises at least one heat pump 3.
In addition, the described chemical plant installations circulating water cooling of the present embodiment and low grade heat energy utilization and water-saving system, wherein, when described heat pump comprises Liang Tai and two above heat pumps 3, the formation heat pump is connected in parallel between each heat pump 3;
Described heat pump and water cooler 1, heating system 4 are connected in series.
The described chemical plant installations circulating water cooling of the present embodiment and low grade heat energy utilization and water-saving system, also can adopt following structure, when described heat pump comprises Liang Tai and two above heat pumps 3, after each heat pump 3 first and different heating systems 4 are connected in series, more in parallel.
Further, the described chemical plant installations circulating water cooling of the present embodiment and low grade heat energy utilization and water-saving system, wherein,
Described evaporimeter 5 is connected with condenser 7 with second channel 10 by first passage 9;
Described first passage 9 is for delivery of the heating agent of vaporization; Described second channel 10 is for delivery of liquid heating agent;
Described first passage 9 refers to that evaporimeter 5 upper ends are connected with compressor 6, the passage that compressor 6 is connected with condenser 7 upper ends;
Described second channel 10 refers to the passage that condenser 7 lower ends are connected with evaporimeter 5 lower ends; Be provided with pressure-reducing valve 8 on described second channel 10.Carry out more various heating systems with the standard coal index that the unit heating area unit interval needs, the calculating standard is as follows: 1kg mark coal is equivalent to the 7000kcal lower calorific value; The heat-only boilers thermal efficiency is 70%; Cogeneration of heat and power boiler overall thermal efficiency is 60%, and thermoelectricity compares 2:1; When common air-conditioning heats, the COP value is 3; The COP value of heat pump is 4; Every 1kwh electric energy needs combustion standard coal 0.34kg, every square metre of area heat load 50W.
While adopting the low grade heat energy heating of chemical plant installations recirculated water:
In the time need to extracting the heat of 3kw from recirculated water, the power consumption of heat pump 3 is 1kw, and the COP while needing mark coal 0.34kg to heat because of it is 4, altogether can provide for the heating family heat energy of 3+1kw, can be 80 m
2the area heating; Amount to every square meter and per hour use standard coal 4.25g.
Comparative Examples one: adopt the heat-only boilers heating
Wherein, standard coal during 0.879kg/, be equivalent to the heat energy of 7.14kw, and the thermal efficiency of pure heat boiler is 70%, therefore can produce the heat energy of 5kw7.14kw * 70%, can be 100 m
2the area heating; Amount to every square meter and per hour use standard coal 8.79g.
Comparative Examples two: adopt the cogeneration of heat and power boiler heating
Wherein, standard coal during 0.615kg/, thermoelectricity is than 2:1, therefore can produce the energy of 3kw, the heat energy of 2kw wherein, the electric energy of 1kw; While pressing 1kw power consumption 0.34kg/, standard coal calculates, and that is to say the heat exhaustion 0.615-0.34kg/ markers coal of residue 2kw, and the heat energy of 2kw can be 40 m
2the area heating, amount to every square meter and per hour use standard coal 6.88g.
Table 1 be in above-mentioned 3 heat-supplying mode by the standard coal amount relatively.
Table 1
| ? | Every square meter per hour consumes standard coal unit: g |
| The heating of employing heat-only boilers | 8.79 |
| Adopt the cogeneration of heat and power boiler heating | 6.88 |
| The low grade heat energy heating of chemical plant installations recirculated water | 4.25 |
By more known, in the situation that reach identical heating standard, adopt the low grade heat energy heating of chemical plant installations recirculated water, the standard coal that every square meter per hour consumes is only 4.25g, than adopting heat-only boilers every square meter that heats per hour to save 4.54g, than adopting the every square meter of cogeneration of heat and power boiler heating per hour to save 2.63g.
The described chemical plant installations circulating water cooling of the present embodiment and low grade heat energy utilization and water-saving system and method, will draw its low grade heat energy by the heat pump technology from the recirculated water that carries low grade heat energy of chemical plant installations output, makes it cooling, recycles.By heat pump, the low grade heat energy that recirculated water is entrained becomes high-grade heat energy for resident's heating after improving potential temperature.Concerning recirculated water, removed from as reducing the electric energy of cooling blower that circulating water temperature is opened, and lower the temperature by heat pump, no longer need to evaporate large water gaging, so saved the large water gaging that conventional method evaporates, simultaneously because recirculated water does not need evaporation, just do not need to concentrate again, salinity is discharged in blowdown again, therefore sewer is also saved yet; Concerning heating, saved for this reason and a large amount of fossil fuels of burning.
The described chemical plant installations circulating water cooling of the present embodiment and low grade heat energy utilization and water-saving method comprise three circulations:
The first circulation is the circulation of chemical plant installations recirculated water: the recirculated water of the heat of chemical plant installations is transported to the evaporimeter 5 of heat pump from the output of water cooler 1 by pipeline, transfer heat to liquid heating agent, makes the heating agent vaporization; The recirculated water of heat is after evaporimeter 5 transfers heat to liquid heating agent, self temperature reduces, be transported to cooling tower 2 tops from the evaporimeter 5 of heat pump by pipeline, then be transported to each water cooler 1 of chemical plant installations by pipeline by cooling tower 2 bottoms, complete the circulation of chemical plant installations recirculated water;
The second circulation is the circulation of the heating agent of heat pump: in evaporimeter 5, the heating agent of vaporization is transported to compressor 6, promoting potential temperature through compressor 6 heats, then be transported to the condenser 7 of heat pump, with carry the low temperature heating water heat exchange condensation of returning from heating equipment, the heating agent liquefy of vaporization, be transmitted back to evaporimeter 5 by pressure-reducing valve 8 again, complete the circulation of heating agent;
The 3rd circulation is the circulation of heating water: be transported to the low temperature heating water of condenser 7 from heating equipment by pipeline, after the heating medium for heating be vaporized, then flow to heating equipment by pipeline, complete the circulation of heating water;
Adopt the advantage of such scheme to be, in the time can not normally using the heating circulation for the chemical plant installations circulating water cooling, can use cooling tower to be lowered the temperature.
The described chemical plant installations circulating water cooling of the present embodiment and low grade heat energy utilization and water-saving method, also can adopt following method to realize, described method comprises three circulations:
The first circulation is the circulation of chemical plant installations recirculated water: the recirculated water of the heat of chemical plant installations is transported to the evaporimeter 5 of heat pump from the output of water cooler 1 by pipeline, transfer heat to liquid heating agent, makes the heating agent vaporization; The recirculated water of heat is after evaporimeter 5 transfers heat to liquid heating agent, and self temperature reduces, and from the evaporimeter 5 of heat pump, is transported to each water cooler 1 of chemical plant installations by pipeline, completes the circulation of chemical plant installations recirculated water;
The second circulation is the circulation of the heating agent of heat pump: in evaporimeter 5, the heating agent of vaporization is transported to compressor 6, promoting potential temperature through compressor 6 heats, then be transported to the condenser 7 of heat pump, with carry the low temperature heating water heat exchange condensation of returning from heating equipment, the heating agent liquefy of vaporization, be transmitted back to evaporimeter 5 by pressure-reducing valve 8 again, complete the circulation of heating agent;
The 3rd circulation is the circulation of heating water: be transported to the low temperature heating water of condenser 7 from heating equipment by pipeline, after the heating medium for heating be vaporized, then flow to heating equipment by pipeline, complete the circulation of heating water.
Further, the described chemical plant installations circulating water cooling of the present embodiment and low grade heat energy utilization and water-saving method, wherein, the circulation of the circulation of the heating agent of described chemical circulation water circulation, heat pump, heating water is isolation mutually.
Further, the described chemical plant installations circulating water cooling of the present embodiment and low grade heat energy utilization and water-saving system, wherein,
Described system is drawn together water cooler 1, cooling tower 2, heat pump, heating system 4;
Each heat pump 3 of described heat pump includes evaporimeter 5, compressor 6, condenser 7;
Wherein, described water cooler 1 output is connected with evaporimeter 5 inputs of heat pump in heat pump 3 by pipeline, and evaporimeter 5 outputs of heat pump 3 are connected with cooling tower 2 tops by pipeline, and cooling tower 2 bottoms are connected with water cooler 1 by pipeline;
In described heat pump, the output of the condenser 7 of heat pump 3 is connected with the input of heating system by pipeline; The output of described heating system is connected with the input of condenser 7.
In addition, the present embodiment also can adopt chemical plant installations circulating water cooling as described below and low grade heat energy utilization and water-saving system, wherein,
Described device comprises water cooler 1, heat pump, heating system 4;
Each heat pump 3 of described heat pump includes evaporimeter 5, compressor 6, condenser 7;
Wherein, described water cooler 1 output is connected with evaporimeter 5 inputs of heat pump in heat pump 3 by pipeline, and evaporimeter 5 outputs of heat pump 3 are connected with water cooler 1 by pipeline;
In described heat pump, the output of the condenser 7 of heat pump 3 is connected with the input of heating system by pipeline; The output of described heating system is connected with the input of condenser 7.
The described chemical plant installations circulating water cooling of the present embodiment and low grade heat energy utilization and water-saving system, wherein, described heat pump comprises at least one heat pump 3.
In addition, the described chemical plant installations circulating water cooling of the present embodiment and low grade heat energy utilization and water-saving system, wherein, when described heat pump comprises Liang Tai and two above heat pumps 3, the formation heat pump is connected in parallel between each heat pump 3;
Described heat pump and water cooler 1, heating system 4 are connected in series.
The described chemical plant installations circulating water cooling of the present embodiment and low grade heat energy utilization and water-saving system, also can adopt following structure, when described heat pump comprises Liang Tai and two above heat pumps 3, after each heat pump 3 first and different heating systems 4 are connected in series, more in parallel.
Further, the described chemical plant installations circulating water cooling of the present embodiment and low grade heat energy utilization and water-saving system, wherein,
Described evaporimeter 5 is connected with condenser 7 with second channel 10 by first passage 9;
Described first passage 9 is for delivery of the heating agent of vaporization; Described second channel 10 is for delivery of liquid heating agent;
Described first passage 9 refers to that evaporimeter 5 upper ends are connected with compressor 6, the passage that compressor 6 is connected with condenser 7 upper ends;
Described second channel 10 refers to the passage that condenser 7 lower ends are connected with evaporimeter 5 lower ends; Be provided with pressure-reducing valve 8 on described second channel 10.
While adopting the low grade heat energy heating of chemical plant installations recirculated water, by circulating water device with after heating equipment is connected, although increased the electric energy that the heat pump device consumes, but but saved the standard coal amount of using, and also having reduced chemical plant installations is water and the electric energy that circulating water cooling is wasted, table 2 is to adopt the low grade heat energy heating of chemical plant installations recirculated water to compare with adopting the heat-only boilers heating, power consumption, the contrast table of saving water, electricity, coal.
The described chemical plant installations circulating water cooling of the present embodiment and low grade heat energy utilization and water-saving system and method, only to have increased the electric energy that heat pump consumes, the COP value of general heat pump heat supply can reach more than 4, the electric energy that consumes 1kw can obtain the heat energy of 4kw, is equivalent to take out of from low-temperature heat source the heat energy of 3kw.If recirculated water can provide heat 1*10
8during kcal/, be equivalent to 1.16*10
5kw, the electric energy that needs heat pump for its 1/3, i.e. 3.87*10
4kw, both additions are the space heating load that system can provide, and add up to 1.547*10
5kw, calculate with every square metre of thermic load 50W of user, and the heating of 3,090,000 square metres can be provided.
According to the standard of embodiment 1, adopt the heat-only boilers heating, be 3,090,000 square meters required total Coal-fired capacities 5 months 24 hours every days of heating, 24 hours=97780*10 of 150 days * of * while being 8.79 g/ms of 309*10000 square metre of *
6gram=97780 ton.
Table 2
| Adopt the low grade heat energy heating of chemical plant installations recirculated water | The increase and decrease amount | Unit price | Increase a Heating Period economic benefit unit: ten thousand yuan |
| Chemical plant installations is the circulating water cooling water consumption | Save 150 tons/ |
2 yuan/tons | 108 |
| Chemical plant installations is the circulating water cooling power consumption | Saved for 500 degree/times | 0.5 unit/degree | 90 |
| The heat pump power consumption | Increase 3.87*10 4kw | 0.5 unit/degree | 6966 |
| Save standard coal | Save 97780 tons | 800 yuan/tons | 7822 |
| Amount to and save | ? | ? | 1054 |
From the above analysis, the low grade heat energy that promotes chemical plant installations recirculated water by heat pump is used for heating, to take out the heat of recirculated water, make it again to circulate, be feasible technically, consume electric energy although increased heat pump, concerning chemical plant installations factory, the electricity consumed for circulating water cooling, water have been saved, concerning heating company, saved fire coal, on the whole, still save a very large expense, and reduced the discharge of the pollutants such as sulphur, nitrogen oxide.
Claims (6)
1. chemical plant installations circulating water cooling and low grade heat energy utilization and water-saving system is characterized in that:
Described system is drawn together water cooler (1), cooling tower (2), heat pump, heating system (4);
Each heat pump (3) of described heat pump includes evaporimeter (5), compressor (6), condenser (7);
Wherein, described water cooler (1) output is connected with evaporimeter (5) input of heat pump in heat pump (3) by pipeline, evaporimeter (5) output of heat pump (3) is connected with cooling tower (2) top by pipeline, and cooling tower (2) bottom is connected with water cooler (1) by pipeline;
The output of the condenser (7) of heat pump in described heat pump (3) is connected with the input of heating system by pipeline; The output of described heating system is connected with the input of condenser (7).
2. chemical plant installations circulating water cooling and low grade heat energy utilization and water-saving system is characterized in that:
Described device comprises water cooler (1), heat pump, heating system (4);
Each heat pump (3) of described heat pump includes evaporimeter (5), compressor (6), condenser (7);
Wherein, described water cooler (1) output is connected with evaporimeter (5) input of heat pump in heat pump (3) by pipeline, and evaporimeter (5) output of heat pump (3) is connected with water cooler (1) by pipeline;
The output of the condenser (7) of heat pump in described heat pump (3) is connected with the input of heating system by pipeline; The output of described heating system is connected with the input of condenser (7).
3. according to the described chemical plant installations circulating water cooling of claim 1 or 2 and low grade heat energy utilization and water-saving system, it is characterized in that: described heat pump comprises at least one heat pump (3).
4. according to the described chemical plant installations circulating water cooling of claim 1 or 2 and low grade heat energy utilization and water-saving system, it is characterized in that:
When described heat pump comprises Liang Tai and two above heat pumps (3), the formation heat pump is connected in parallel between each heat pump (3);
Described heat pump and water cooler (1), heating system (4) are connected in series.
5. according to the described chemical plant installations circulating water cooling of claim 1 or 2 and low grade heat energy utilization and water-saving system, it is characterized in that:
When described heat pump comprises Liang Tai and two above heat pumps (3), after the first and different heating system (4) of each heat pump (3) is connected in series, more in parallel.
6. according to the described chemical plant installations circulating water cooling of claim 1 or 2 and low grade heat energy utilization and water-saving system, it is characterized in that:
Described evaporimeter (5) is connected with condenser (7) with second channel (10) by first passage (9);
Described first passage (9) is for delivery of the heating agent of vaporization; Described second channel (10) is for delivery of liquid heating agent;
Described first passage (9) refers to that evaporimeter (5) upper end is connected with compressor (6), the passage that compressor (6) is connected with condenser (7) upper end;
Described second channel (10) refers to the passage that condenser (7) lower end is connected with evaporimeter (5) lower end; Be provided with pressure-reducing valve (8) on described second channel (10).
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| CN2013203070331U CN203336877U (en) | 2013-05-31 | 2013-05-31 | Chemical engineering device circulating water cooling and low-grade heat energy utilizing and water-saving system |
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| CN2013203070331U CN203336877U (en) | 2013-05-31 | 2013-05-31 | Chemical engineering device circulating water cooling and low-grade heat energy utilizing and water-saving system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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2013
- 2013-05-31 CN CN2013203070331U patent/CN203336877U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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