CN105698148A - Gradient utilization system for waste heat of high-temperature flue gas exhausted by industrial boiler - Google Patents

Gradient utilization system for waste heat of high-temperature flue gas exhausted by industrial boiler Download PDF

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Publication number
CN105698148A
CN105698148A CN201410697411.0A CN201410697411A CN105698148A CN 105698148 A CN105698148 A CN 105698148A CN 201410697411 A CN201410697411 A CN 201410697411A CN 105698148 A CN105698148 A CN 105698148A
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CN
China
Prior art keywords
flue gas
temperature flue
air
heat
water
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Pending
Application number
CN201410697411.0A
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Chinese (zh)
Inventor
李峰
王涵钰
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Xian Shangshang Electro Mechanical Co Ltd
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Xian Shangshang Electro Mechanical Co Ltd
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Application filed by Xian Shangshang Electro Mechanical Co Ltd filed Critical Xian Shangshang Electro Mechanical Co Ltd
Priority to CN201410697411.0A priority Critical patent/CN105698148A/en
Publication of CN105698148A publication Critical patent/CN105698148A/en
Pending legal-status Critical Current

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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
    • 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

Abstract

The invention discloses a gradient utilization system for waste heat of high-temperature flue gas exhausted by an industrial boiler. The system mainly includes a high-temperature flue gas power regeneration system, a medium-temperature flue gas refrigerating and heating system and a low-temperature flue gas hot water supply system. According to the system, high-temperature flue gas is directly utilized for gasifying water into vapor in a heat exchanger, then a turbine is pushed to rotate so as to drive a power generator to generate power, and medium-temperature flue gas exhausted out of the high-temperature flue gas power regeneration system can be used for providing heat energy for a heat pump air conditioner system, so that refrigeration is achieved in summer and heating is achieved in winter; and flue gas exhausted out of the medium-temperature flue gas refrigerating and heating system further has considerable heat, and the low-temperature flue gas can be utilized for preheating cold water or cold air in order to provide domestic hot water for people or provide preheated air for the boiler. The system saves energy resources to a great extent and has a remarkable effect on lowering the production cost of large-scale enterprises by fully utilizing original heat exhausted into air.

Description

High-temperature flue gas is exhaust heat stepped utilizes system in a kind of Industrial Boiler discharge
Technical field
The invention belongs to industrial waste heat recycling field, be specifically related to the discharge of a kind of Industrial Boiler high-temperature flue gas is exhaust heat stepped utilize system。
Background technology
Showing according to the data in the seminar jointly sponsored by National Development and Reform Committee, Chinese Academy of Engineering, China's energy utilization rate is only 33%, differs l0 percentage point with advanced international standard, and the energy saving space and potentiality are very big。The supply of current electric power is mainly based on large thermal power plant, but its generating efficiency is low, even the coal-fired power generator set of IGCC (integrated gasification combined cycle for power generation system) this environmental protection, generating net efficiency also only has 43%~45%, the mode of the logical supercooled water of heat and aerofluxus that is exceed half is discharged in the middle of environment, this not only wastes the energy, and causes serious thermal pollution, affects living environment and the quality of life of people。Therefore, how this part low temperature exhaust heat of Appropriate application has become the focus of research。Effective recycling low temperature exhaust heat not only can improve the present situation that efficiency of energy utilization is low, and can reduce thermal pollution, protects environment。
Summary of the invention
The present invention is directed to above-mentioned the deficiencies in the prior art, having invented the discharge of a kind of Industrial Boiler, high-temperature flue gas is exhaust heat stepped utilizes system, the substantial amounts of high-temperature flue gas that Industrial Boiler discharges can be utilized fully once again, by step according to practical situation step by step utilize the waste heat being with in the middle of flue gas。
After generating set is aided with efficient flue gas waste heat recovery apparatus, gas engine waste heat recovery form is diversified。For the generating set of 500kW, the about 400kg steam produced per hour or 10t hot water (in temperature rise 30 DEG C), can be widely applied to multiple fields such as hot and cold, CCHP central air conditioner system, multi-purpose station crude oil heating system。
Present system solves its technical problem and be the technical scheme is that as shown in Figure 1, present system uses and directly uses high-temperature flue gas to make aqueous vapor turn to the rotation of steam then pushing turbine in heat exchanger, then rotated drive electrical generators by steam turbine to generate electricity, can be used to heat winter for people's cooling in summer for heat pump type air conditioning system offer heat energy from high-temperature flue gas electricity generation system middle temperature flue gas more out;Therefrom temperature flue gas refrigerating and heating systems flue gas out also has suitable heat, it is possible to use these low-temperature flue gas carry out preheating cold water or cold air preheating to be provided domestic hot-water for people or provide the air through preheating for boiler
In cooling-heating treatment system, the high-temperature flue gas obtained after boiler combustion is initially used for generating, then utilizes waste heat to pass through to drive Absorption Refrigerator cooling;Also by hot water direct-furnish heating, or " vapour-water " heat exchanger can be utilized to produce secondary hot water's indirect heating simultaneously。
High-temperature flue gas is exhaust heat stepped utilizes system for the discharge of present system one Industrial Boiler, mainly by the electricity generation system again of high-temperature flue gas;The refrigeration system of middle temperature flue gas and the water air preheating system of low-temperature flue gas are constituted。
The invention has the beneficial effects as follows: one Industrial Boiler of the present invention discharge high-temperature flue gas is exhaust heat stepped, and to utilize system to have with low cost, simple in construction, easy to use, floor space is little, energy utilization rate is high, greatly reduces enterprise energy use cost, reduces production cost, particularly hot-water air-conditioning can be provided to heat or clammy for some outlying places, great convenience life。
Accompanying drawing explanation
Fig. 1 is that high-temperature flue gas is exhaust heat stepped utilizes system schematic in one Industrial Boiler of the present invention discharge。
Detailed description of the invention
Below in conjunction with drawings and Examples, the specific embodiment of the invention is described:
Fig. 1 illustrates a specific embodiment of the present invention, as it can be seen, main by the electricity generation system again of high-temperature flue gas;The refrigeration system of middle temperature flue gas and the water air preheating system of low-temperature flue gas。
Described high-temperature flue gas electricity generation system mainly by, high-temperature flue gas heat exchange boiler, steam pipeline, steam wheel, electromotor, water reflow treatment device constitute。
Described middle temperature flue gas refrigeration system, is mainly made up of heat exchanger, air-conditioning heat pump, indoor supply air system figure。
Described low-temperature flue gas water air preheating system is mainly by high-efficiency heat pipe heat exchanger, heating, drying device, water circulating pipe, and air circulation duct is constituted。
High-temperature flue gas is exhaust heat stepped utilizes system in a kind of Industrial Boiler discharge, the exhaust opening of wherein said Industrial Boiler connects high-temperature flue gas electricity generation system again, the exhaust opening of the high-temperature flue gas boiler of described high-temperature flue gas electricity generation system again connects the heat exchanger of middle temperature flue gas refrigeration system, and the exhaust opening of the heat exchanger of middle temperature flue gas connects the high-efficiency heat pipe heat exchanger of the water air preheating system of low-temperature flue gas。Described high-temperature flue gas electricity generation system electricity accesses the supply network of user, or power for a long time for certain electric equipment, described middle temperature flue gas refrigeration system accesses the indoor indoor set of user or central air-conditioning circularly cooling pipeline, described low-temperature flue gas water pre-heating system accesses hot water pipeline or some equipment preheating water pipeline of user, and described low-temperature flue gas air preheat drying system accesses the air duct needed with air or the equipment drying air。
Above in conjunction with accompanying drawing, the preferred embodiment for the present invention is explained in detail; but the invention is not restricted to above-mentioned embodiment, all improvement in the ken that those of ordinary skill in the art possess carried out based on the thought of the present invention are all within the scope of the present invention。
Many other can be made without departing from the spirit and scope of the present invention to change and remodeling。Should be appreciated that and the invention is not restricted to specific embodiment, the scope of the invention limits。

Claims (2)

1. high-temperature flue gas is exhaust heat stepped utilizes system in Industrial Boiler discharge, it is characterised in that main by the electricity generation system again of high-temperature flue gas;The refrigeration system of middle temperature flue gas and the water air preheating system of low-temperature flue gas;
Described high-temperature flue gas electricity generation system again, is mainly made up of high-temperature flue gas heat exchange boiler, steam pipeline, steam wheel, electromotor, water reflow treatment device;
Described middle temperature flue gas refrigeration system, is mainly made up of heat exchanger, air-conditioning heat pump, indoor supply air system figure;
Described low-temperature flue gas water air preheating system, mainly by high-efficiency heat pipe heat exchanger, heating, drying device, water circulating pipe, and air circulation duct is constituted。
2. high-temperature flue gas is exhaust heat stepped utilizes system in Industrial Boiler discharge as claimed in claim 1 a kind of, it is characterized in that: the exhaust opening of described Industrial Boiler connects high-temperature flue gas electricity generation system again, the exhaust opening of the high-temperature flue gas boiler of described high-temperature flue gas electricity generation system again connects the heat exchanger of middle temperature flue gas refrigeration system, and the exhaust opening of the heat exchanger of middle temperature flue gas connects the high-efficiency heat pipe heat exchanger of the water air preheating system of low-temperature flue gas;
Described high-temperature flue gas electricity generation system electricity accesses the supply network of user, or powers for a long time for certain electric equipment;
Described middle temperature flue gas refrigeration system accesses the indoor indoor set of user or central air-conditioning circularly cooling pipeline
Described low-temperature flue gas water pre-heating system accesses hot water pipeline or some equipment preheating water pipeline of user, and described low-temperature flue gas air preheat drying system accesses the air duct needed with air or the equipment drying air。
CN201410697411.0A 2014-11-28 2014-11-28 Gradient utilization system for waste heat of high-temperature flue gas exhausted by industrial boiler Pending CN105698148A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201410697411.0A CN105698148A (en) 2014-11-28 2014-11-28 Gradient utilization system for waste heat of high-temperature flue gas exhausted by industrial boiler

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201410697411.0A CN105698148A (en) 2014-11-28 2014-11-28 Gradient utilization system for waste heat of high-temperature flue gas exhausted by industrial boiler

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CN105698148A true CN105698148A (en) 2016-06-22

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108870802A (en) * 2018-04-28 2018-11-23 重庆大学 A kind of near-zero release distributed energy resource system and its method
CN109668132A (en) * 2018-11-08 2019-04-23 杨皓 The technique that a kind of hot gas cooling procedure produces more pressure rating steam simultaneously and stable regulation outlet temperature is higher than 100 DEG C
CN113357719A (en) * 2020-03-04 2021-09-07 贵州电网有限责任公司 Comprehensive energy recycling device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108870802A (en) * 2018-04-28 2018-11-23 重庆大学 A kind of near-zero release distributed energy resource system and its method
CN109668132A (en) * 2018-11-08 2019-04-23 杨皓 The technique that a kind of hot gas cooling procedure produces more pressure rating steam simultaneously and stable regulation outlet temperature is higher than 100 DEG C
CN113357719A (en) * 2020-03-04 2021-09-07 贵州电网有限责任公司 Comprehensive energy recycling device

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Application publication date: 20160622