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CN102226604A - A high-temperature steam heat pump system using low-grade waste heat to generate steam - Google Patents

A high-temperature steam heat pump system using low-grade waste heat to generate steam Download PDF

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Publication number
CN102226604A
CN102226604A CN2011101464989A CN201110146498A CN102226604A CN 102226604 A CN102226604 A CN 102226604A CN 2011101464989 A CN2011101464989 A CN 2011101464989A CN 201110146498 A CN201110146498 A CN 201110146498A CN 102226604 A CN102226604 A CN 102226604A
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China
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heat pump
heat
steam
waste heat
pump system
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CN2011101464989A
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曹锋
胡斌
邢子文
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Xian Jiaotong University
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Xian Jiaotong University
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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
    • Y02P80/15On-site combined power, heat or cool generation or distribution, e.g. combined heat and power [CHP] supply

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  • Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)

Abstract

The invention discloses a high-temperature vapor heat pump system for generating vapor by utilizing low-grade waste heat, which comprises a heat pump circulating device and a water vapor generation circulating device, wherein the heat pump system recycles the industrial waste heat (20-40 DEG C) and exhausts the heat in a condenser; water on the other side absorbs the heat to be evaporated into the 80 DEG C water vapor; the heat is absorbed by a heat regenerator and becomes overheated vapor under the negative pressure; the overheated vapor is supplied to industrial production through the pressurization of a water vapor compressor, thereby recycling the industrial waste heat and solving the problem that a common heat pump cannot generate vapor below 100 DEG C, which is an innovative system form. The invention has the innovation points that the heat pump system with excellent energy saving performance is combined with the water vapor generation circulation; and the water vapor is generated under the negative pressure, and the waste heat is fully utilized and recycled and the problems which cannot be overcome by the common heat pump are solved.

Description

A kind of high-temperature steam heat pump that utilizes low grade residual heat to produce steam
Technical field
The present invention relates to a kind of high-temperature steam heat pump device that utilizes low grade residual heat to produce steam, especially utilize industrial waste heat (20 ℃~40 ℃) to produce the high-temperature steam heat pump of steam.
Background technology
Waste heat is under certain economic technology condition, the energy that is not utilized in using energy source equipment, just unnecessary, the discarded energy.It comprises high-temp waste gas waste heat, cooling medium waste heat, waste vapour waste water residual heat, high-temperature product and afterheat of slags, chemical reaction waste heat, combustible exhaust gas waste liquid and waste material waste heat and high-pressure fluid overbottom pressure etc.According to investigation, the waste heat total resources of every profession and trade account for the 17%-67% of its fuel consumption total amount, and the residual heat resources of recyclable utilization are about 60% of waste heat total resources.Along with industrial enterprise the eliminate outmoded production capacity propelling of work and the startup in succession of technological transformation project, continuing to bring out of novel waste heat recovery technology, the high temperature heat pump technology is exactly wherein a kind of, and high temperature heat pump is exactly a kind of very otherwise effective technique of industrial exhaust heat that is used for reclaiming.Heat pump is to be cost to consume a part of high mass-energy (mechanical energy, electric energy etc.) or high temperature potential energy, by thermodynamic cycle, heat energy is transferred to the energy utility system of high temp objects by cryogenic object.Constantly be applied to the recovery of various waste heats, heat recovery technology will have been given play to more, more important role at aspects such as economize on electricity, water saving, joint vapour.
Further developing of China's industry, the demand of steam be in continuous increase, and because the energy in short supply, supply to steam does not catch up with demand, and the price of steam has just exceeded many than in the past, how to provide to produce needed steam, and the energy energy savings, become the focus that people pay close attention to
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, provide a kind of low grade residual heat that utilizes that can utilize industrial waste heat to solve the needed steam problem of production to produce the high-temperature steam heat pump of steam, this system can effectively reclaim industrial waste heat, the energy to waste carries out recuperation of heat, and having solved common heat pump simultaneously can't be lower than the defective that produces steam under 100 ℃ the condition.
For achieving the above object, the technical solution used in the present invention is: comprise the evaporimeter that is connected with industrial wastewater, the outlet of evaporimeter is connected by the inlet of gas-liquid separator with the heat pump circulating system compressor, the outlet of described compressor is connected by the inlet of pipeline with heater, condenser, reservoir, device for drying and filtering and evaporimeter successively, the water inlet of described condenser also links to each other with running water by the road, and the delivery port of condenser is connected with water vapour compression machine through regenerator.
Heating power expansion valve also is installed on the pipeline between device for drying and filtering of the present invention and the evaporimeter.
Two stop valves also are installed on the condenser running water inlet duct, between two stop valves, pressure-reducing valve are installed.
Described compressor adopts semi-hermetic screw compressor, and compressor also is connected with oil cooler by the road.
Moisturizing in the middle of described water vapour compression machine adopts guarantees that the temperature of compression process can be too not high.
The present invention produces the method for steam:
Vapour-liquid two-phase mixture after the throttling enters into evaporimeter, in evaporimeter, absorb the heat in the industrial wastewater, regulate heating power expansion valve and guarantee the rational degree of superheat, make cold-producing medium evaporation becoming superheated vapor, through in compressor, being compacted into the gas of HTHP behind the gas-liquid separator, in condenser, emit heat then, the water of opposite side absorbs heat of vaporization, become water vapour, high pressure refrigerant liquid after being cooled enters reservoir, and the cold-producing medium behind the reservoir of flowing through is held back through super-dry and behind the impurity inside filtering out and become the vapour-liquid two-phase mixture.
Water is through after the decompression, the water heat that the absorption refrigeration agent is discharged condenser that flows to condenser from stop valve, evaporation becomes and is lower than saturated atmosphere and presses pairing lower temperature water vapour, flow through and become superheated vapor behind the regenerator, in water vapour compression machine, be compacted into the steam of HTHP then, can satisfy industrial demand.
The present invention adopts heat pump cycle and water vapour to produce the mode that circulation combines, be in the steam generator water to be become 0.47bar at condenser earlier, low temperature and low pressure steam about 80 ℃ becomes the industrial process waters steam of HTHP after the compression through water vapour compression machine.
The invention solves at present can only fire coal or the combustion gas present situation of producing steam, provide a kind of industrial waste heat (20 ℃~40 ℃) that utilizes to produce steam, reduction is to the consumption of the energy, proposition produces the method for steam in negative pressure (absolute pressure is 0.47bar), effectively reclaimed industrial waste heat, in conjunction with heat pump, realized perfect combination with superior energy saving.
Description of drawings
Fig. 1 is an overall structure schematic diagram of the present invention.
The specific embodiment
Below in conjunction with accompanying drawing the present invention is described in further detail.
Referring to Fig. 1, the present invention includes the evaporimeter 7 that is connected with industrial wastewater, the outlet of evaporimeter 7 is connected by the inlet of gas-liquid separator 8 with heat pump circulating system compressor 1, the outlet of described compressor 1 is connected by the inlet of pipeline with heater 2, condenser 3, reservoir 4, device for drying and filtering 5, heating power expansion valve 6 and evaporimeter 7 successively, described compressor 1 adopts semi-hermetic screw compressor, and compressor 1 also is connected with oil cooler 9 by the road.The water inlet of described condenser 3 also links to each other with running water by the road, on described condenser 3 running water inlet ducts, two stop valves 11 are installed also, between two stop valves 11 pressure-reducing valve 10 is installed, the delivery port of condenser 3 is connected with water vapour compression machine 12 through regenerator 2.
The cold-producing medium that the present invention uses is R245fa.
Operation principle of the present invention:
The high-temperature high-pressure refrigerant gas that heat pump circulating system compressor 1 is discharged enters regenerator 2, cooling in regenerator 2, the heat of discharging makes water vapour become superheated vapor, the cooling of cold-producing medium is carried out in condenser 3, high pressure refrigerant liquid after being cooled enters reservoir 4, the device for drying and filtering 5 of flowing through then, through super-dry and the cold-producing medium after filtering enter heating power expansion valve 6, after throttling, become the vapour-liquid two-phase mixture.The cold-producing medium of vapour-liquid two-phase enters into evaporimeter 7, absorbs the heat in the industrial wastewater in evaporimeter 7, makes cold-producing medium evaporation becoming superheated vapor, gets back to compressor 1 through behind the gas-liquid separator 8.
Pressure reduced after water flow through pressure-reducing valve 10, flow to condenser 3 (steam generator) from stop valve 11 then, the heat that water absorption refrigeration agent in the steam generator is discharged, evaporation becomes to being lower than saturated atmosphere presses pairing lower temperature water vapour, through becoming superheated vapor after regenerator 2 heating, in water vapour compression machine 12, be compacted into the steam of HTHP then, can satisfy industrial demand.
The cold-producing medium that the present invention uses is R245fa.
In the condenser 3 of the present invention, water be under negative pressure (absolute pressure is 0.47bar) down evaporation become saturated vapor under this pressure.
The water vapour that water vapour compression machine of the present invention is discharged is 2bar, 200 ℃.

Claims (5)

1.一种利用低品位余热产生蒸汽的高温蒸汽热泵系统,其特征在于:包括与工业废水相连通的蒸发器(7),蒸发器(7)的出口通过气液分离器(8)与热泵循环系统压缩机(1)的入口相连通,所述的压缩机(1)的出口依次通过管路与加热器(2)、冷凝器(3)、储液器(4)、干燥过滤器(5)及蒸发器(7)的入口相连通,所述的冷凝器(3)的入水口还经管路与自来水相连,冷凝器(3)的出水口经回热器(2)与水蒸汽压缩机(12)相连通。1. A high-temperature steam heat pump system utilizing low-grade waste heat to generate steam, characterized in that: it includes an evaporator (7) connected to industrial waste water, and the outlet of the evaporator (7) is connected to the heat pump through a gas-liquid separator (8) The inlet of the circulatory system compressor (1) is connected, and the outlet of the compressor (1) is connected with the heater (2), condenser (3), liquid receiver (4), dry filter ( 5) and the inlet of the evaporator (7) are connected, the water inlet of the condenser (3) is also connected to the tap water through the pipeline, and the water outlet of the condenser (3) is compressed with the water vapor through the regenerator (2) Machine (12) is connected. 2.根据权利要求1所述的利用低品位余热产生蒸汽的高温蒸汽热泵系统,其特征在于:所述的干燥过滤器(5)与蒸发器(7)之间的管路上还安装有热力膨胀阀(6)。2. The high-temperature steam heat pump system for generating steam by using low-grade waste heat according to claim 1, characterized in that a thermal expansion device is installed on the pipeline between the dry filter (5) and the evaporator (7). valve (6). 3.根据权利要求1所述的利用低品位余热产生蒸汽的高温蒸汽热泵系统,其特征在于:所述的冷凝器(3)自来水入口管道上还安装有两个截止阀(11),在两截止阀(11)之间安装有减压阀(10)。3. The high-temperature steam heat pump system for generating steam by using low-grade waste heat according to claim 1, characterized in that: two shut-off valves (11) are installed on the tap water inlet pipe of the condenser (3). A pressure relief valve (10) is installed between the stop valves (11). 4.根据权利要求1所述的利用低品位余热产生蒸汽的高温蒸汽热泵系统,其特征在于:所述的压缩机(1)采用半封闭螺杆压缩机,且压缩机(1)还经管路与油冷却器(9)相连通。4. The high-temperature steam heat pump system for generating steam by using low-grade waste heat according to claim 1, characterized in that: the compressor (1) is a semi-hermetic screw compressor, and the compressor (1) is also connected to the The oil cooler (9) is connected. 5.根据权利要求1所述的利用低品位余热产生蒸汽的高温蒸汽热泵系统,其特征在于:所述的水蒸汽压缩机(12)采用中间补水,保证压缩过程的温度不会太高。5. The high-temperature steam heat pump system for generating steam by using low-grade waste heat according to claim 1, characterized in that: the steam compressor (12) uses intermediate water replenishment to ensure that the temperature during the compression process will not be too high.
CN2011101464989A 2011-06-01 2011-06-01 A high-temperature steam heat pump system using low-grade waste heat to generate steam Pending CN102226604A (en)

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Cited By (26)

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CN102406306A (en) * 2011-11-28 2012-04-11 天津市职业大学 Heat pump type shampoo bed capable of recycling waste heat
CN102435016A (en) * 2011-11-04 2012-05-02 石家庄工大化工设备有限公司 Method for directly recovering waste gas and waste heat of dryer by using compression heat pump
CN102494526A (en) * 2011-12-15 2012-06-13 石家庄工大化工设备有限公司 Method for directly recovering waste gas and waste heat of dryer by utilizing steam jet pump
CN102494525A (en) * 2011-12-15 2012-06-13 石家庄工大化工设备有限公司 Process utilizing steam jet pump to recover waste heat of exhaust gas of dryer indirectly
CN102506573A (en) * 2011-11-04 2012-06-20 石家庄工大化工设备有限公司 Method for indirectly recovering waste gas and waste heat of dryer by compression heat pump
CN102620475A (en) * 2012-04-09 2012-08-01 浙江大学 Multifunctional solar-assisted carbon dioxide heat pump system
CN102967121A (en) * 2012-11-30 2013-03-13 山东科院天力节能工程有限公司 Lignite drying system and technology with superheated steam capable of recycling waste steam heat
WO2014058449A1 (en) * 2012-10-08 2014-04-17 Clean Energy Systems, Inc. Near zero emissions production of clean high pressure steam
CN105492842A (en) * 2013-06-24 2016-04-13 Lg化学株式会社 Heat recovery apparatus
CN106500516A (en) * 2016-12-22 2017-03-15 杨胜东 A kind of negative pressure is from cooling steam compression heat pump and its system
CN106969523A (en) * 2017-05-05 2017-07-21 江苏科技大学 A kind of single-stage of selection natural refrigerant/overlapping double-standard high temperature heat pump system
JP2017156055A (en) * 2016-03-04 2017-09-07 富士電機株式会社 Heat pump type steam generation device
CN107676999A (en) * 2017-09-07 2018-02-09 中国科学院理化技术研究所 Large temperature span heat pump
CN107965753A (en) * 2016-10-19 2018-04-27 华北电力大学(保定) One kind utilizes low-temperature industrial hot water production vapor device
CN108072029A (en) * 2016-11-16 2018-05-25 华北电力大学(保定) A kind of steam generating system of recovery boiler smoke discharging residual heat
CN108302843A (en) * 2017-12-21 2018-07-20 上海交通大学 Steam and hot water alliance air energy boiler system
CN108386827A (en) * 2018-04-06 2018-08-10 无锡诚尔鑫环保装备科技有限公司 A kind of steam generation facility and its application method using waste heat
CN109724294A (en) * 2019-02-02 2019-05-07 天津商业大学 An open water vapor heat pump and cascade refrigeration unit combined cooling and heating system
CN109827419A (en) * 2019-02-20 2019-05-31 中国科学院理化技术研究所 An air source large temperature span high temperature heat pump drying system
CN109869937A (en) * 2019-01-25 2019-06-11 济南大森制冷设备有限公司 A kind of steam, Hot water units
CN112325254A (en) * 2020-11-06 2021-02-05 淄博能源研究院 Steam generator for low temperature exhaust heat recovery
CN112833695A (en) * 2021-02-20 2021-05-25 重庆合得拢食品有限公司 Brine heat energy recycling device
CN114036688A (en) * 2021-11-25 2022-02-11 云南电网有限责任公司电力科学研究院 Static modeling method of high-temperature steam heat pump
CN114216110A (en) * 2021-12-24 2022-03-22 上海诺通新能源科技有限公司 Heat pump assisted heating step waste heat recovery steam generation system and working method thereof
CN114353364A (en) * 2022-01-12 2022-04-15 西安交通大学 High-temperature steam generation system and method
CN118582726A (en) * 2024-04-18 2024-09-03 广东佛燃科技有限公司 A solid oxide fuel cell and heat pump coupled steam supply system

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CN102435016A (en) * 2011-11-04 2012-05-02 石家庄工大化工设备有限公司 Method for directly recovering waste gas and waste heat of dryer by using compression heat pump
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WO2014058449A1 (en) * 2012-10-08 2014-04-17 Clean Energy Systems, Inc. Near zero emissions production of clean high pressure steam
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CN107965753A (en) * 2016-10-19 2018-04-27 华北电力大学(保定) One kind utilizes low-temperature industrial hot water production vapor device
CN108072029A (en) * 2016-11-16 2018-05-25 华北电力大学(保定) A kind of steam generating system of recovery boiler smoke discharging residual heat
CN106500516A (en) * 2016-12-22 2017-03-15 杨胜东 A kind of negative pressure is from cooling steam compression heat pump and its system
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CN106969523A (en) * 2017-05-05 2017-07-21 江苏科技大学 A kind of single-stage of selection natural refrigerant/overlapping double-standard high temperature heat pump system
CN107676999A (en) * 2017-09-07 2018-02-09 中国科学院理化技术研究所 Large temperature span heat pump
CN108302843A (en) * 2017-12-21 2018-07-20 上海交通大学 Steam and hot water alliance air energy boiler system
CN108386827A (en) * 2018-04-06 2018-08-10 无锡诚尔鑫环保装备科技有限公司 A kind of steam generation facility and its application method using waste heat
CN109869937A (en) * 2019-01-25 2019-06-11 济南大森制冷设备有限公司 A kind of steam, Hot water units
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CN109827419A (en) * 2019-02-20 2019-05-31 中国科学院理化技术研究所 An air source large temperature span high temperature heat pump drying system
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CN114216110A (en) * 2021-12-24 2022-03-22 上海诺通新能源科技有限公司 Heat pump assisted heating step waste heat recovery steam generation system and working method thereof
CN114216110B (en) * 2021-12-24 2024-08-23 上海诺通新能源科技有限公司 Heat pump assisted heating step waste heat recovery steam generation system and working method thereof
CN114353364A (en) * 2022-01-12 2022-04-15 西安交通大学 High-temperature steam generation system and method
CN118582726A (en) * 2024-04-18 2024-09-03 广东佛燃科技有限公司 A solid oxide fuel cell and heat pump coupled steam supply system

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Application publication date: 20111026