CN104534741A - Heat efficient coupling energy-saving system for high-temperature heat pump of distillation equipment and refrigerating machine - Google Patents
Heat efficient coupling energy-saving system for high-temperature heat pump of distillation equipment and refrigerating machine Download PDFInfo
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- CN104534741A CN104534741A CN201410845558.XA CN201410845558A CN104534741A CN 104534741 A CN104534741 A CN 104534741A CN 201410845558 A CN201410845558 A CN 201410845558A CN 104534741 A CN104534741 A CN 104534741A
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- heat pump
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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
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B29/00—Combined heating and refrigeration systems, e.g. operating alternately or simultaneously
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
Abstract
A heat efficient coupling energy-saving system for a high-temperature heat pump of distillation equipment and a refrigerating machine is composed of a high-temperature water source heat pump, a water cooling refrigerating machine body, a coupling heat exchanger, an air energy heat exchanger, a waste heat recycler and a circulating pump. Hot water flowing out of a condenser of the refrigerating machine and low-temperature water flowing out of an evaporator of the high-temperature heat pump independently pass through the same heat exchanger to carry out efficient heat coupling exchange. In the coupling process of heat, efficient energy exchange complementation is carried out on the high-temperature heat pump and the refrigerating machine, energy returns to the condenser of the refrigerating machine and the evaporator of the high-temperature heat pump again, and the condenser and the evaporator each obtain the optimal grade heat source. The energy efficiency ratio is obviously improved, and the ideal energy-saving effect is achieved. The system can be widely applied to a middle-low-temperature distillation solvent recycling system in middle-low-temperature chemical engineering, wine making, edible oil production and bio-extraction production, and the aims of electric energy low consumption and zero discharging of production of an enterprise are achieved.
Description
Technical field
The present invention relates to the power-economizing method of Distallation systm, specifically during Distillation recovery organic solvent, be used for a kind of heat efficient coupling energy conserving system of the refrigeration machine of heat vaporized high temperature heat pump and condensation liquefaction.
Background technology
In the process of Distillation recovery organic solvent, all to adopt heat vaporized, and then condensation liquefaction is carried out to steam, reach the object that organic solvent reclaims.At vaporescence, organic solvent needs to absorb a large amount of heat of vaporization, most of manufacturing enterprise adopts coal-burning boiler to obtain heat usually, along with the continuous reinforcement of energy-saving and emission-reduction consciousness, at present all finding new fungible energy source, such as adopt heated by natural gas, direct electro heating method, but the use of natural gas needs certain condition, direct electro heating producing cost increases substantially.Start both at home and abroad to adopt high temperature heat pump to provide heat energy at present, operating cost is close to using natural gas, but the use of high temperature heat pump must consume the energy of low-grade heat source, usual employing water resource heat pump, rely on groundwater recharge technology or water source, rivers and lakes, by the restriction of conditional resources, most enterprises is difficult to carry out.
The organic solvent of vaporization needs condensation liquefaction in Distillation recovery process, needs refrigeration machine to lower the temperature, and vaporization and condensation liquefaction are two contrary physical processes, do not consider energy efficiency of equipment, energy consumption is equal, so still-process needs the energy of twice to pay, refrigeration machine is the most frequently used equipment.What require along with energy-conserving and environment-protective improves constantly, people adopt various energy-saving technical scheme, because condition and resource restriction comprise investment reason, still cannot meet the needs of production development, a lot of enterprise still adopts air cooling chiller at present, or cooling tower water-cooled refrigeration system, a large amount of heat energy of refrigerator condenser release distribute in vain, for the energy recovery of refrigeration machine release, people have started to recycle, but recovery utilization rate is not high.Present stage, people still constantly seek practicable economizing on energy and electricity method.There is large quantities of creative patented technology recent years, such as, patent publication No. CN203907733U, Mult-source energy-saving thermal-arrest and heating system.CN104075484A, the heat-supply metering charge of comprehensive utilization solar energy and air energy and operation method.Publication number CN104006575A, a kind of wind-water double-source Teat pump boiler and control method thereof.CN20384854U, a kind of high temperature heat pump unit utilizing air can produce high-temperature water.Although the creationary Application way proposing the multiple low grade energy of these methods, these methods are not exclusively suitable for the Distallation systm of cooling and warming, and the power saving of distillation still has the potentiality of excavation.Utilize heat exchanger to the patent application of heat efficient coupling energy conserving system and report between refrigeration machine and high temperature heat pump in special process at present also not for distillation.
Summary of the invention
Technical problem to be solved by this invention is a kind of high temperature heat pump of distillation equipment and the energy conserving system of refrigeration machine that propose for the above-mentioned state of the art.Distillation is the heat vaporized process reclaiming organic solvent with condensation liquefaction, refrigeration machine and heat pump are all can the equipment of forced branch heat, heat pump heats to be needed to absorb heat from the external world, refrigeration machine refrigeration needs to discharge used heat, in still-process, refrigeration is carried out with heating simultaneously, according to the special process of distillation, the efficient coupling system of heat between the high temperature heat pump of a kind of distillation equipment of design innovation of the present invention and refrigeration machine.
A kind of high temperature heat pump and refrigeration machine heat efficient coupling energy conserving system of distillation equipment are made up of heat pump of high-temp water source, water-cooled refrigeration machine, Coupling Thermal interchanger, air energy heat exchanger, waste heat recoverer, circulating pump.The hot water of outflow refrigerator condenser is made independently to carry out efficient thermal coupling exchange through same heat exchanger with the water at low temperature flowing out high temperature heat pump evaporimeter.In thermal coupling process, high temperature heat pump and refrigeration machine carry out high efficiency energy and exchange complementation, then come back to respectively in the condenser of refrigeration machine and the evaporimeter of high temperature heat pump, obtain best grade thermal source separately, Energy Efficiency Ratio is all significantly increased, and reaches desirable energy-saving effect.The present invention can be widely used in middle low temperature chemical industry, wine brewing, edible fat production, in the middle low temperature distillation solvent recovering system that biological extraction is produced, realizes electric energy low consumption and enterprise's production zero-emission object.
In Distallation systm, high temperature heat pump 1 provides the heat of heated solvent and solvent evaporation, major part energy is from low-grade heat source, usual employing water source is as thermal source, water source temperature is generally on the low side, usually, between 10-15 degree, after absorbing the energy at water source when high temperature heat pump heats, temperature reduces 5-8 degree, and water-cooled refrigeration machine 2 condenser spent hot water temperature is between 40-45 degree.When heat pump heats, water source temperature is on the low side, and impact heats efficiency.Equally, if the water temperature entering refrigerator condenser is higher, Energy Efficiency Ratio is lower.The hot water that the present invention adopts Coupling Thermal interchanger 3 pairs of refrigerator condensers to discharge and the cold water that high temperature heat pump evaporimeter is discharged carry out efficient degree of depth thermal coupling, make the water temperature coming back to refrigerator condenser remain between 20-25 degree, refrigeration machine Energy Efficiency Ratio is significantly improved.In addition, get back to the water temperature of high temperature heat pump evaporimeter between 20-25 degree, high temperature heat pump heating energy efficiency ratio is also improved significantly.In order to refrigeration machine and high temperature heat pump carry out high efficiency energy complementation, require that high temperature heat pump model is slightly larger than the model of refrigeration machine.Before considering distillation, first solvent is heated to evaporation point, and just start distillation, so high temperature heat pump needs the heat energy source worked alone, the present invention adopts air energy heat exchanger 4 device to supplement the heat energy of high temperature heat pump evaporimeter.Refrigeration machine condensation is carried out with vaporization simultaneously, and refrigeration machine does not exist the problem worked alone, so the present invention does not do and specially designs.
Adopt air energy heat exchanger servicing unit, supplement in the process of high temperature heat pump heat-source energy, because high temperature heat pump evaporator circuit working medium is less, thermal capacity is little, and air energy heat exchanger can additional heat in time.Adopt efficient coupling heat exchanger of the present invention, refrigeration machine and high temperature heat pump can be made to obtain best thermal source separately, and refrigeration machine and high temperature heat pump all have higher Energy Efficiency Ratio.Thus reach energy-conservation object.The present invention, except reclaiming refrigeration machine heat, is also reclaimed by waste heat recoverer 5 the toxic emission heat energy of distillation equipment intermediate pump, makes high temperature heat pump be in high energy efficiency state all the time.The Coupling Thermal interchanger that the present invention adopts can be plate type heat exchanger, or shell-tube type calandria heat exchanger.
Figure of description
Fig. 1 is structural representation of the present invention.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is described in further detail, but the present invention is not restricted thus.
Embodiment: the solvent recovery in our company's lycopene production process is the process that in still-process, ethyl acetate is reclaimed in condensation, before technological transformation, Distallation systm uses power consumption 30KW water-cooling screw rod refrigeration machine, refrigerating capacity 95KW, cooling tower leaving water temperature in summer 35 degree, power consumption 30KW, refrigeration machine low temperature leaving water temperature-5 is spent.System heating adopts 105KW direct electro heating mode, when normally working, and this Distallation systm power consumption 135KW.Adopt heat efficient coupling energy conserving system of the present invention, heat exchange area 5M2 plate type heat exchanger is adopted to carry out thermal coupling to refrigeration machine and high temperature heat pump, the water temperature entering refrigerator condenser remains on 20-25 degree, and the water temperature entering high temperature heat pump evaporimeter remains on 20-25 degree.After testing, refrigeration mechanism cold reaches 120KW, and refrigeration machine low temperature leaving water temperature reaches-6 degree, and refrigeration machine power consumption is reduced to 25.2KW, and Energy Efficiency Ratio brings up to 4.8 by 3.2, solvent recovering rate have also been obtained raising.High temperature heat pump adopts power consumption 40KW unit, under standard condition, and heating capacity 110KW, heat-pump hot-water outlet temperature 80 degree.Adopt coupled system of the present invention, and adopt auxiliary air energy warmer and vacuum pump waste gas heat reclamation device, make high temperature heat pump inflow temperature remain on 25 degree, heat-pump hot-water leaving water temperature is constant, heating capacity reaches 130KW, and heat pump power consumption is reduced to 34KW, and Energy Efficiency Ratio brings up to 3.82 by 2.75.Owing to adopting high temperature heat pump to replace direct electro heating device and heat efficient coupling energy conserving system, whole Distallation systm power consumption is reduced to 59.2KW, system saving electricity 56.1% compared with before transformation.Because refrigeration machine power consumption reduces 4.8KW, refrigerating capacity increases 25KW.Heat pump power consumption reduces 6KW, and heating capacity increases 20KW, reaches the object of expection electricity-saving high efficiency.
According to thermal coupling principle of the present invention, adopt the shell-tube type Flat-tube heat exchanger of same heat exchange area, identical object can be reached equally.
Claims (5)
1. the high temperature heat pump of distillation equipment and a refrigeration machine heat efficient coupling energy conserving system, is characterized in that being made up of heat pump of high-temp water source 1, water-cooled refrigeration machine 2, Coupling Thermal interchanger 3, air energy heat exchanger 4, waste heat recoverer 5, circulating pump.
2. Coupling Thermal interchanger according to claim 1, is characterized in that the device of the heat efficient coupling to refrigerator condenser and high temperature heat pump evaporimeter.
3. high temperature heat pump according to claim 1 and refrigeration machine efficient coupling energy conserving system, is characterized in that high temperature heat pump can work independently.
4. the device of efficient coupling according to claim 2 is plate type heat exchanger or shell-tube type calandria heat exchanger.
5. thermal coupling according to claim 2, it is characterized in that the hot water of outflow refrigerator condenser and flow out high temperature heat pump evaporimeter water at low temperature independently through same heat exchanger, carrying out high efficiency energy exchanges complementary, then comes back to separately in the evaporimeter of refrigerator condenser and high temperature heat pump.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410845558.XA CN104534741B (en) | 2014-12-31 | 2014-12-31 | A kind of high temperature heat pump of distillation equipment and refrigeration machine heat coupling energy-saving system |
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| CN201410845558.XA CN104534741B (en) | 2014-12-31 | 2014-12-31 | A kind of high temperature heat pump of distillation equipment and refrigeration machine heat coupling energy-saving system |
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| CN104534741A true CN104534741A (en) | 2015-04-22 |
| CN104534741B CN104534741B (en) | 2018-04-06 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108826739A (en) * | 2018-08-13 | 2018-11-16 | 荏原冷热系统（中国）有限公司 | Absorption installation and residual neat recovering system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN201021855Y (en) * | 2006-12-20 | 2008-02-13 | 广东西屋康达空调有限公司 | Overlapped coupling high-temperature heat reuse air-conditioner group |
| CN201074920Y (en) * | 2007-06-27 | 2008-06-18 | 王全龄 | Heat pump type air conditioner and water heater being suitable for broad temperature surroundings running in high efficiency |
| CN203454403U (en) * | 2013-08-20 | 2014-02-26 | 天津君歌舜尧分子蒸馏设备有限公司 | Heat exchange system of molecular distillation heat pump |
| CN103803668A (en) * | 2014-02-28 | 2014-05-21 | 济钢集团有限公司 | System for recovering residual heat of ammonia vapor on top of surplus ammonia water ammonia still |
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- 2014-12-31 CN CN201410845558.XA patent/CN104534741B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201021855Y (en) * | 2006-12-20 | 2008-02-13 | 广东西屋康达空调有限公司 | Overlapped coupling high-temperature heat reuse air-conditioner group |
| CN201074920Y (en) * | 2007-06-27 | 2008-06-18 | 王全龄 | Heat pump type air conditioner and water heater being suitable for broad temperature surroundings running in high efficiency |
| CN203454403U (en) * | 2013-08-20 | 2014-02-26 | 天津君歌舜尧分子蒸馏设备有限公司 | Heat exchange system of molecular distillation heat pump |
| CN103803668A (en) * | 2014-02-28 | 2014-05-21 | 济钢集团有限公司 | System for recovering residual heat of ammonia vapor on top of surplus ammonia water ammonia still |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108826739A (en) * | 2018-08-13 | 2018-11-16 | 荏原冷热系统（中国）有限公司 | Absorption installation and residual neat recovering system |
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| CN104534741B (en) | 2018-04-06 |
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