CN202832679U - Combined heat and power generation system based on waste heat recovery application absorption heat pump - Google Patents

Combined heat and power generation system based on waste heat recovery application absorption heat pump Download PDF

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Publication number
CN202832679U
CN202832679U CN2012203564017U CN201220356401U CN202832679U CN 202832679 U CN202832679 U CN 202832679U CN 2012203564017 U CN2012203564017 U CN 2012203564017U CN 201220356401 U CN201220356401 U CN 201220356401U CN 202832679 U CN202832679 U CN 202832679U
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China
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heat
communicated
absorption
steam
heat pump
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Expired - Fee Related
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CN2012203564017U
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Chinese (zh)
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杨茂华
杨超
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杨茂华
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E20/00Combustion technologies with mitigation potential
    • Y02E20/14Combined heat and power generation [CHP]
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P80/00Climate change mitigation technologies for sector-wide applications
    • Y02P80/10Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
    • Y02P80/15On-site combined power, heat or cool generation or distribution, e.g. combined heat and power [CHP] supply

Abstract

A combined heat and power generation system based on a waste heat recovery application absorption heat pump comprises a high grade waste heat source, a waste heat boiler, a turbine, a low grade waste heat source, an absorption heat pump, a secondary heat exchange station and a heating supply system, wherein the high grade waste heat source is communicated with the waste heat boiler, steam produced by the waste heat boiler is communicated with a steam inlet of the turbine, and the turbine drives a motor to generate electricity. An extraction opening of the turbine is communicated with the steam drive end of the absorption heat pump, the heat absorption end of the absorption heat pump is communicated with the low grade waste heat source, the heat release end of the absorption heat pump is communicated with the heat absorption end of the secondary heat exchange station, and the heat release end of the secondary heat exchange station is communicated with the heating supply system. The combined heat and power generation system based on the waste heat recovery application absorption heat pump not only improves the utilization efficiency of a high grade waste heat, but also absorbs a large number of a low grade waste heat, and the utilization efficiency of comprehensive waste heat can reach to more than 85%.

Description

Use the co-generation unit of absorption heat pump based on heat recovery
Technical field
The utility model relates to the heat energy utilization field, relates in particular to a kind of co-generation unit of using absorption heat pump based on heat recovery.
Background technique
Industrial enterprise consumes a large amount of primary energy in when operation, produces simultaneously a large amount of remaining (give up) heat, reaches the 300-400 degree such as the temperature of the flue dust of discharging, even higher, is wherein containing the amount of heat by the primary energy conversion; Industrial enterprise also has that heat is discharged in a large amount of cooling waters and the waste water, and the temperature of the water of these discharges heat is relatively low, does not wait from the 20-100 degree.Above these remaining (giving up) heat all have recovery measure at present, energy-saving and emission-reduction have also well been accomplished, but make a general survey of whole remaining (giving up) heat recovery technology, also comparatively single at present, it is simple generating, be a heat supply, recycle efficient is not high, can not realize that the step of remaining (giving up) thermal source is used.The present technique patent can solve the at present remaining comparatively single and inefficient problem of (giving up) heat recovery.
The model utility content
The purpose of this utility model is to design a kind of novel co-generation unit based on heat recovery application absorption heat pump, addresses the above problem.
To achieve these goals, the technical solution adopted in the utility model is as follows:
A kind of co-generation unit of using absorption heat pump based on heat recovery comprises high-grade waste heat source, exhaust heat boiler, steam turbine, low grade residual heat source, absorption heat pump, secondary heat exchange station and heating system;
Described high-grade waste heat source is communicated to described exhaust heat boiler, and the vapor communication that described exhaust heat boiler produces is to the steam inlet of described steam turbine, and described Steam Turbine Driven generator generates electricity; The extraction opening of described steam turbine is communicated to the steam flooding moved end of described absorption heat pump, the heat absorbing end of described absorption heat pump is communicated to described low grade residual heat source, the release end of heat of described absorption heat pump is communicated to the heat absorbing end at described secondary heat exchange station, and the release end of heat at described secondary heat exchange station is communicated to described heating system.
Preferably, also comprise the peak regulation heater, the extraction opening of described steam turbine is communicated to the heat absorbing end of described peak regulation heater simultaneously, is communicated to the entrance of the heat absorbing end at described secondary heat exchange station behind the release end of heat of high temperature outlet by described peak regulation heater of the release end of heat of described absorption heat pump.
Preferably, also comprise drainage pump, the extraction opening of described steam turbine is communicated to the steam inlet of the steam flooding moved end of described absorption heat pump, is communicated to described drainage pump behind the driving steam-condensation of described absorption heat pump; The steam ouput of described steam turbine is communicated to the steam inlet of the heat absorbing end of described peak regulation heater, and the steam ouput of the heat absorbing end of described peak regulation heater also is communicated to described drainage pump.
Preferably, described low grade residual heat source is the process cooling water system.
Preferably, also comprise electrical network, described steam turbine and described generator are in transmission connection, and described generator is electrically connected with described electrical network.
The utility model combines remaining (giving up) heat recovery generating and heat supply, the high-grade heat generating that remaining (giving up) pines for, and the tow taste heat heat supply improves remaining (giving up) efficiency of utilization.Simple remaining (giving up) efficiency of utilization of remaining (giving up) heat generating is about 35%, and remaining (giving up) efficiency of utilization of cogeneration of heat and power then can reach more than 60%.Its principle is, is sent to steam turbine behind generation high-grade steam after remaining (giving up) heat boiler absorption high temperature remaining (giving up) heat and does work, and the driving steam turbine High Rotation Speed generates electricity by generator set, and unit generates electricity main personal for industrial enterprise; The relatively low part steam of pressure after the generating is extracted out by steam turbine, be sent to absorption heat pump, driving heat pump carries out low-temperature waste heat (mainly take the waste water of 20-60 degree as main) and reclaims, after improving the circulation water for heating return water temperature about 30 degree behind the absorption heat pump absorption low-temperature waste heat, be sent to the heat supply water pipeline or be sent to the heat supply water pipeline through double heating and carry out heat supply.
The beneficial effects of the utility model can be summarized as follows:
1, the utility model has originally not only improved the utilization ratio of high-grade remaining (giving up) heat, can absorb simultaneously a large amount of low-grade remaining (giving up) heat, comprehensive remaining (giving up) efficiency of utilization can reach more than 85%, can be the primary energy that industrial enterprise saves 20-50%, thereby can improve more than the primary energy utilization ratio to 80% of industrial enterprise; And the integrated heat efficiency of the generating of traditional remaining (giving up) heat or remaining (giving up) hot heat supply can only at 30-50%, also have a large amount of remaining (giving up) heat to fail to reclaim.
2, the utility model is simple in structure, and implementation cost is cheap.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Embodiment
Clearer for technical problem, technological scheme and beneficial effect that the utility model is solved, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explaining the utility model, and be not used in restriction the utility model.
A kind of co-generation unit of using absorption heat pump based on heat recovery such as Fig. 1 comprises high-grade waste heat source, exhaust heat boiler, steam turbine, low grade residual heat source, absorption heat pump, secondary heat exchange station and heating system; Described high-grade waste heat source is communicated to described exhaust heat boiler, and the vapor communication that described exhaust heat boiler produces is to the steam inlet of described steam turbine, and described Steam Turbine Driven generator generates electricity; The extraction opening of described steam turbine is communicated to the steam flooding moved end of described absorption heat pump, the heat absorbing end of described absorption heat pump is communicated to described low grade residual heat source, the release end of heat of described absorption heat pump is communicated to the heat absorbing end at described secondary heat exchange station, and the release end of heat at described secondary heat exchange station is communicated to described heating system.
In the embodiment who is more preferably, the co-generation unit of using absorption heat pump based on heat recovery also comprises peak regulation heater, electrical network and drainage pump, the extraction opening of described steam turbine is communicated to the heat absorbing end of described peak regulation heater simultaneously, is communicated to the entrance of the heat absorbing end at described secondary heat exchange station behind the release end of heat of high temperature outlet by described peak regulation heater of the release end of heat of described absorption heat pump; The extraction opening of described steam turbine is communicated to the steam inlet of the steam flooding moved end of described absorption heat pump, is communicated to described drainage pump behind the driving steam-condensation of described absorption heat pump; The steam ouput of described steam turbine is communicated to the steam inlet of the heat absorbing end of described peak regulation heater, and the steam ouput of the heat absorbing end of described peak regulation heater also is communicated to described drainage pump; Described low grade residual heat source is the process cooling water system; Described steam turbine and described generator are in transmission connection, and described generator is electrically connected with described electrical network.
High-grade (high-temperature) waste heat source 1 is sent to exhaust heat boiler 2, is sent to steam turbine 3 after producing steam, and drive generator 4 generated electricity after steam do work in steam turbine 3, generate electricity and deliver to electrical network, finish the cogeneration process; The vapor portion of doing merit in steam turbine 3 is drawn out of minute two-way and is sent to respectively absorption heat pump 7 and peak regulation heater 5, the steam driven absorption heat pump 7 that is sent in the absorption heat pump 7 absorbs low grade residual heat source 8, to be heated to 70-90 ℃ by 40-60 ℃ heat supply backwater after 6 heat exchange of secondary heat exchange station simultaneously, pass through again peak regulation heater 5 again heat (freeze-up) or no longer hot (conventional heat supply phase) be sent to secondary heat exchange station 6 and carry out heat supply, finish the heat recovery heat supplying process.
More than by the detailed description of concrete and preferred embodiment the utility model; but those skilled in the art should be understood that; the utility model is not limited to the above embodiment; all within spirit of the present utility model and principle; any modification of doing, be equal to replacement etc., all should be included within the protection domain of the present utility model.

Claims (5)

1. a co-generation unit of using absorption heat pump based on heat recovery is characterized in that: comprise high-grade waste heat source, exhaust heat boiler, steam turbine, low grade residual heat source, absorption heat pump, secondary heat exchange station and heating system;
Described high-grade waste heat source is communicated to described exhaust heat boiler, and the vapor communication that described exhaust heat boiler produces is to the steam inlet of described steam turbine, and described Steam Turbine Driven generator generates electricity; The extraction opening of described steam turbine is communicated to the steam flooding moved end of described absorption heat pump, the heat absorbing end of described absorption heat pump is communicated to described low grade residual heat source, the release end of heat of described absorption heat pump is communicated to the heat absorbing end at described secondary heat exchange station, and the release end of heat at described secondary heat exchange station is communicated to described heating system.
2. the co-generation unit of using absorption heat pump based on heat recovery according to claim 1, it is characterized in that: also comprise the peak regulation heater, the extraction opening of described steam turbine is communicated to the heat absorbing end of described peak regulation heater simultaneously, is communicated to the entrance of the heat absorbing end at described secondary heat exchange station behind the release end of heat of high temperature outlet by described peak regulation heater of the release end of heat of described absorption heat pump.
3. the co-generation unit of using absorption heat pump based on heat recovery according to claim 2, it is characterized in that: also comprise drainage pump, the extraction opening of described steam turbine is communicated to the steam inlet of the steam flooding moved end of described absorption heat pump, is communicated to described drainage pump behind the driving steam-condensation of described absorption heat pump; The steam ouput of described steam turbine is communicated to the steam inlet of the heat absorbing end of described peak regulation heater, and the steam ouput of the heat absorbing end of described peak regulation heater also is communicated to described drainage pump.
4. according to claim 1 and 2 or the 3 described co-generation units of using absorption heat pump based on heat recovery, it is characterized in that: described low grade residual heat source is the process cooling water system.
5. according to claim 1 and 2 or the 3 described co-generation units of using absorption heat pump based on heat recovery, it is characterized in that: also comprise electrical network, described steam turbine and described generator are in transmission connection, and described generator is electrically connected with described electrical network.
CN2012203564017U 2012-07-20 2012-07-20 Combined heat and power generation system based on waste heat recovery application absorption heat pump Expired - Fee Related CN202832679U (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103673033A (en) * 2013-12-04 2014-03-26 大连葆光节能空调设备厂 Heat and power cogeneration central heating system based on heat pump
CN111121340A (en) * 2020-01-15 2020-05-08 安徽普泛能源技术有限公司 Method and system for recycling multi-quality waste heat
CN113280390A (en) * 2021-05-17 2021-08-20 浙江大学 Deep peak regulation heat supply grade improving system and method based on heat pump boosting reheating

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103673033A (en) * 2013-12-04 2014-03-26 大连葆光节能空调设备厂 Heat and power cogeneration central heating system based on heat pump
CN111121340A (en) * 2020-01-15 2020-05-08 安徽普泛能源技术有限公司 Method and system for recycling multi-quality waste heat
CN111121340B (en) * 2020-01-15 2020-12-04 安徽普泛能源技术有限公司 System for cyclic utilization many qualities waste heat
CN113280390A (en) * 2021-05-17 2021-08-20 浙江大学 Deep peak regulation heat supply grade improving system and method based on heat pump boosting reheating

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