WO2020125097A1 - Système de récupération de chaleur perdue à partir d'eau de chemise d'un moteur à combustion interne au moyen d'un transformateur de chaleur à absorption - Google Patents

Système de récupération de chaleur perdue à partir d'eau de chemise d'un moteur à combustion interne au moyen d'un transformateur de chaleur à absorption Download PDF

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Publication number
WO2020125097A1
WO2020125097A1 PCT/CN2019/106349 CN2019106349W WO2020125097A1 WO 2020125097 A1 WO2020125097 A1 WO 2020125097A1 CN 2019106349 W CN2019106349 W CN 2019106349W WO 2020125097 A1 WO2020125097 A1 WO 2020125097A1
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WO
WIPO (PCT)
Prior art keywords
water
absorber
heat
absorption heat
water pipeline
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Application number
PCT/CN2019/106349
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English (en)
Chinese (zh)
Inventor
刘辉
褚洪涛
贺广杰
于腾飞
Original Assignee
青岛新奥清洁能源有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by 青岛新奥清洁能源有限公司 filed Critical 青岛新奥清洁能源有限公司
Publication of WO2020125097A1 publication Critical patent/WO2020125097A1/fr

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22D—PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
    • F22D1/00—Feed-water heaters, i.e. economisers or like preheaters
    • 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
    • F25B30/00—Heat pumps
    • F25B30/04—Heat pumps of the sorption type
    • 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
    • F25B30/00—Heat pumps
    • F25B30/06—Heat pumps characterised by the source of low potential heat

Definitions

  • the present invention relates to the field of distributed energy, and in particular to a system for recovering the residual heat of cylinder liner water of an internal combustion engine using a second type of absorption heat pump.
  • gas turbines are mainly used to produce electricity and steam, and are suitable for industrial energy use places with high electrical load and steam load demand.
  • efficiency of gas turbine power generation is low, generally around 29 ⁇ 32%. Since the electrical grade is higher than steam, the value of the same unit of electrical energy is also higher than steam, and the gas turbine unit power cost investment is 1.1 to 1.15 times that of the internal combustion engine, so it is used. The economics of gas turbine projects are usually not too high.
  • Gas-fired internal combustion engines have high power generation efficiency, generally around 38-44%, but two waste heat produced by internal combustion engines, one is high-temperature flue gas, the other is high-temperature cylinder jacket water around 75°C ⁇ 95°C, The latter kind of waste heat is more difficult to use, and is generally used to drive bromine coolers for refrigeration. Therefore, a distributed energy system that uses a gas internal combustion engine as the prime mover is generally suitable for building energy consumption sites that have three loads of cooling, heating and electricity. Therefore, the use of internal combustion engines in the industrial field is limited.
  • the present invention provides a system for recovering the residual heat of the engine cylinder liner water using a second type of absorption heat pump.
  • a system for recovering waste heat of a cylinder liner of an internal combustion engine using a second type absorption heat pump including a gas internal combustion engine, a second type absorption heat pump, a gas boiler, a deaerator, a return water line, and a soft water line, the gas Internal combustion
  • the machine is provided with a high-temperature cylinder liner water pipeline, the high-temperature cylinder liner water pipeline is connected to the second type absorption heat pump, the return water pipeline is the gas boiler return water, and the soft water pipeline is the gas boiler water supplement, and the return water pipeline is in turn
  • the absorption heat pump is connected to the deaerator, and the soft water pipeline is sequentially connected to the second type absorption heat pump and the deaerator; the deaerator is connected to the gas boiler.
  • the second type of absorption heat pump includes a primary absorber, a secondary absorber, a primary generator, a secondary generator, a condenser and an evaporator;
  • the evaporator is connected to a secondary absorber, the secondary absorber is connected to a primary generator, the primary generator is connected to a primary absorber, the primary absorber is connected to a secondary generator, and secondary generation occurs
  • the condenser is connected to the condenser, and the condenser is connected to the evaporator;
  • the high-temperature cylinder jacket water pipeline is connected to the evaporator, the primary generator and the secondary generator in sequence, the return water pipeline is connected to the secondary absorber, and the soft water pipeline is connected to the primary absorber and the condenser, respectively.
  • the high-temperature liner water in the high-temperature liner water line is first absorbed in the evaporator, the first part of the heat is transferred to the secondary absorber, and the return water line passes through the secondary absorber to absorb the secondary
  • the first part of the heat in the device absorbs heat and raises the temperature of the water in the return line; after that, the high-temperature cylinder jacket water is absorbed in the first part of the generator in the second part of the heat, and the second part of the heat is transferred to the first-stage absorber, the soft water line passes The first-level absorber absorbs the second part of the heat in the first-level absorber to increase the temperature of the water in the soft water pipeline; Finally, the high-temperature cylinder liner water is absorbed in the third part of the heat in the second-stage generator, and the third part of the heat transfer For the condenser, the soft water pipe passes through the condenser to absorb the third part of the heat in the condenser and increase the water temperature in the soft water
  • the second type absorption heat pump provided by the invention provides a system for recovering the residual heat of the cylinder liner water of the internal combustion engine.
  • the high-temperature cylinder liner water generated by the gas internal combustion engine is sent to the second type absorption heat pump, and the return water pipeline and the soft water pipeline are also connected.
  • the heat of the high-temperature cylinder jacket water increases the temperature of the return water and soft water.
  • the increased return water and soft water are mixed in the deaerator and sent to the gas boiler.
  • the second type of absorption heat pump is used to extract the residual heat of the water in the cylinder liner, so as to achieve the purposes of reducing system energy consumption, recovering waste heat, saving energy and reducing emissions, avoiding waste of energy, and improving energy utilization.
  • FIG. 1 is a structural diagram of a system for recovering residual heat of cylinder liner water of an internal combustion engine using a second type of absorption heat pump.
  • FIG. 2 is a schematic structural diagram of a second type of absorption heat pump.
  • a system for recovering waste heat of cylinder liner water of an internal combustion engine using a second type absorption heat pump includes a gas internal combustion engine 1, a second type absorption heat pump 2, a gas boiler 3, a deaerator 4, Return water pipe 5 and soft water pipe 6.
  • the gas-fired internal combustion engine 1 is provided with a high-temperature liner water line 7, and the high-temperature liner water line 7 is connected to a second type absorption heat pump 2.
  • the return water pipeline 5 is the return water of the gas boiler
  • the soft water pipeline 6 is the supplementary water of the gas boiler.
  • the return water pipeline is connected to the second type absorption heat pump 2 and the deaerator 4 in sequence.
  • the soft water pipeline is sequentially connected to the second type absorption heat pump 2 and the deaerator 4.
  • the deaerator 4 is connected to the gas boiler 3.
  • the second type absorption heat pump includes a first-level absorber 8, a second-level absorber 9, a first-level generator 10, a second-level generator 11, a condenser 12, and an evaporator 13.
  • the evaporator 13 is connected to the secondary absorber 9, the secondary absorber 9 is connected to the primary generator 10, the primary generator is connected to the primary absorber 8, and the primary absorber is connected to the secondary generator 11
  • the secondary generator is connected to the condenser 12, and the condenser is connected to the evaporator.
  • the high-temperature liner water line 7 is connected to the evaporator, the first-level generator and the second-level generator in sequence, that is, the liner water in the high-temperature liner water line sequentially flows through the evaporator, the first-level generator and the second-level generation Device.
  • the return water pipe 5 is connected to the secondary absorber 9, and the return water in the return water pipe flows through the secondary absorber.
  • the soft water pipeline 6 is connected to the first-level absorber 8 and the condenser 12, respectively, that is, the soft water in the soft water pipeline flows through both the absorber and the condenser.
  • the high-temperature liner water in the high-temperature liner water line is first absorbed in the evaporator.
  • the first part of the heat is transferred to the secondary absorber.
  • the return water line passes through the secondary absorber to transfer the First Absorb heat and increase the water temperature in the return water pipeline
  • the high-temperature cylinder liner water is absorbed in the second part of the heat in the first-stage generator, and the second part of the heat is transferred to the first-stage absorber. Two parts of heat absorption, increase the water temperature in the soft water pipeline;
  • the high-temperature cylinder jacket water is absorbed in the second part of the third part of the heat, the third part of the heat is transferred to the condenser, the soft water pipeline passes through the condenser, the third part of the heat in the condenser is absorbed and improved Water temperature in the soft water pipe.
  • the water temperature of the high-temperature cylinder liner from the gas internal combustion engine is 97°C
  • the initial water temperature of the return water in the return water pipeline is 90°C
  • the initial water temperature of the soft water in the soft water pipeline is 20°C.
  • the high-temperature cylinder jacket water enters the evaporator at a temperature of 97°C. After the first part of the heat is absorbed in the evaporator, the water temperature drops to 90.5°C. This part of the heat is transferred to the secondary absorber, and the return water line passes through the secondary absorption The first part of the heat in the secondary absorber is absorbed, the temperature of the return water is increased from 90°C to 135°C, and the high temperature return water of 135°C is sent to the deaerator;
  • the water of the cylinder liner at 90.5°C enters the first-level generator, and after the second part of the heat is absorbed, the water temperature drops to 8 3°C. This part of the heat is transferred to the first-level absorber, and the soft water pipeline passes through The first-level absorber absorbs the second part of the heat in the first-level absorber. The temperature of the soft water is increased from 20°C to 40°C. The soft water at 40°C is sent to the deaerator;
  • the 83°C jacket water enters the secondary generator, after being absorbed the third part of the heat, the water temperature drops to 75°C and flows back to the gas internal combustion engine, the third part of the heat is transferred to the condenser, the water hose Passing through the condenser, the third part of the heat in the condenser is absorbed.
  • the temperature of the soft water is increased from 20°C to 40°C.
  • the soft water at 40°C is sent to the deaerator.
  • the outlet water temperature of the deaerator is 104°C, and then the deaerated water enters the boiler.

Abstract

La présente invention concerne un système de récupération de chaleur perdue à partir d'eau de chemise d'un moteur à combustion interne au moyen d'un transformateur de chaleur à absorption. Le système comprend un moteur à gaz (1), un transformateur de chaleur à absorption (2), une chaudière à gaz (3), un désaérateur (4), une canalisation de retour d'eau (5) et une canalisation d'eau douce (6), le moteur à gaz (1) étant pourvu d'une canalisation d'eau de chemise à haute température (7), et la canalisation d'eau de chemise à haute température (7) étant raccordée au transformateur de chaleur à absorption (2) ; la canalisation de retour d'eau (5) renvoie l'eau vers la chaudière à gaz (3), et la canalisation d'eau douce (6) distribue de l'eau à la chaudière à gaz (3) ; la canalisation de retour d'eau (5) est raccordée séquentiellement au transformateur de chaleur à absorption (2) et au désaérateur (4), et la canalisation d'eau douce (6) est raccordée séquentiellement au transformateur de chaleur à absorption (2) et au désaérateur (4) ; et le désaérateur (4) est raccordé à la chaudière à gaz (3). La chaleur perdue provenant de l'eau de chemise est extraite au moyen du transformateur de chaleur à absorption (2), de façon à atteindre les objectifs de réduction de la consommation d'énergie du système et de récupération de chaleur perdue pour réaliser des économies d'énergie et une réduction des émissions, éviter les pertes d'énergie et améliorer le taux d'utilisation de l'énergie.
PCT/CN2019/106349 2018-12-20 2019-09-18 Système de récupération de chaleur perdue à partir d'eau de chemise d'un moteur à combustion interne au moyen d'un transformateur de chaleur à absorption WO2020125097A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201811560974.XA CN109737642B (zh) 2018-12-20 2018-12-20 利用第二类吸收式热泵回收内燃机缸套水余热的系统
CN201811560974.X 2018-12-20

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WO2020125097A1 true WO2020125097A1 (fr) 2020-06-25

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WO (1) WO2020125097A1 (fr)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109737642B (zh) * 2018-12-20 2020-03-06 青岛新奥清洁能源有限公司 利用第二类吸收式热泵回收内燃机缸套水余热的系统

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004003751A (ja) * 2002-05-31 2004-01-08 Sanyo Electric Co Ltd 吸収式冷凍機
CN101520208A (zh) * 2009-04-13 2009-09-02 清华大学 一种余热回收型浴室热水锅炉装置
CN203285500U (zh) * 2013-06-07 2013-11-13 安徽省拓普能源科技管理股份有限公司 冷热电联合循环能源供应系统
CN206338139U (zh) * 2016-11-29 2017-07-18 湖北鹰牌动力科技有限公司 一种燃气发动机缸套水余热回收利用装置
CN108151111A (zh) * 2017-12-20 2018-06-12 大连葆光节能空调设备厂 工业余热对一次网回水加热的方法
CN109737642A (zh) * 2018-12-20 2019-05-10 青岛新奥清洁能源有限公司 利用第二类吸收式热泵回收内燃机缸套水余热的系统

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004003751A (ja) * 2002-05-31 2004-01-08 Sanyo Electric Co Ltd 吸収式冷凍機
CN101520208A (zh) * 2009-04-13 2009-09-02 清华大学 一种余热回收型浴室热水锅炉装置
CN203285500U (zh) * 2013-06-07 2013-11-13 安徽省拓普能源科技管理股份有限公司 冷热电联合循环能源供应系统
CN206338139U (zh) * 2016-11-29 2017-07-18 湖北鹰牌动力科技有限公司 一种燃气发动机缸套水余热回收利用装置
CN108151111A (zh) * 2017-12-20 2018-06-12 大连葆光节能空调设备厂 工业余热对一次网回水加热的方法
CN109737642A (zh) * 2018-12-20 2019-05-10 青岛新奥清洁能源有限公司 利用第二类吸收式热泵回收内燃机缸套水余热的系统

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