WO2020125097A1 - System for recovering waste heat from jacket water of internal combustion engine by using absorption heat transformer - Google Patents

System for recovering waste heat from jacket water of internal combustion engine by using absorption heat transformer 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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Prior art keywords
water
absorber
heat
absorption heat
water pipeline
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PCT/CN2019/106349
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French (fr)
Chinese (zh)
Inventor
刘辉
褚洪涛
贺广杰
于腾飞
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青岛新奥清洁能源有限公司
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Publication of WO2020125097A1 publication Critical patent/WO2020125097A1/en

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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.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Sorption Type Refrigeration Machines (AREA)
  • Engine Equipment That Uses Special Cycles (AREA)

Abstract

Disclosed is a system for recovering waste heat from jacket water of an internal combustion engine by using an absorption heat transformer. The system comprises a gas engine (1), an absorption heat transformer (2), a gas-fired boiler (3), a deaerator (4), a water return pipeline (5) and a soft water pipeline (6), wherein the gas engine (1) is provided with a high-temperature jacket water pipeline (7), and the high-temperature jacket water pipeline (7) is connected to the absorption heat transformer (2); the water return pipeline (5) returns water to the gas-fired boiler (3), and the soft water pipeline (6) supplies water to the gas-fired boiler (3); the water return pipeline (5) is sequentially connected to the absorption heat transformer (2) and the deaerator (4), and the soft water pipeline (6) is sequentially connected to the absorption heat transformer (2) and the deaerator (4); and the deaerator (4) is connected to the gas-fired boiler (3). The waste heat from jacket water is extracted by using the absorption heat transformer (2), thereby achieving the aims of reducing the system energy consumption and recovering waste heat to achieve energy conservation and emission reduction, avoiding energy waste, and improving the energy utilization rate.

Description

利用第二类吸收式热泵回收内燃机缸套水余热的系统 技术领域 System for recovering waste heat of cylinder liner of internal combustion engine using the second type absorption heat pump
[0001] 本发明涉及分布式能源领域， 具体涉及一种利用第二类吸收式热泵回收内燃机 缸套水余热的系统。 [0001] 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.
背景技术 Background technique
[0002] 在分布式能源系统中， 常用的有燃气轮机和燃气内燃机两种原动机， 其中采用 燃气轮机主要用来生产电和蒸汽， 适合用于电负荷和蒸汽负荷需求较高的工业 用能场所， 但燃气轮机发电效率较低， 一般在 29~32%左右， 由于电品位高于蒸 汽， 同单位电能的价值也高于蒸汽， 且燃气轮机单位功率成本投资是内燃机的 1. 1~1.15倍， 因此采用燃气轮机的项目经济性通常不是太高。 [0002] In distributed energy systems, two types of prime movers, gas turbines and gas internal combustion engines, are commonly used. Among them, 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. However, the 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.
[0003] 燃气内燃机发电效率高， 一般在 38~44%左右， 但内燃机所产两种余热， 一种 是高温烟气， 另一种是 75°C~95°C左右的高温缸套水， 其中后一种余热利用难度 较大， 一般用于驱动溴冷机进行制冷， 故以燃气内燃机为原动机的分布式能源 系统， 一般适用于同时具有冷热电三种负荷的建筑用能场所， 因此内燃机在工 业领域的使用收到限制。 [0003] 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.
[0004] 如何在工业领域推广使用发电效率更高的内燃机系统， 需要解决高温缸套水高 效利用问题， 这样不仅可以提高发电效率而且可以提高余热利用率。 [0004] How to promote the use of an internal combustion engine system with higher power generation efficiency in the industrial field requires solving the problem of high-efficiency utilization of high-temperature cylinder liner water, which not only improves power generation efficiency but also improves waste heat utilization.
发明概述 Summary of the invention
技术问题 technical problem
问题的解决方案 Solution to the problem
技术解决方案 Technical solution
[0005] 针对现有的燃气内燃机缸套水能源浪费的问题， 本发明提供了一种利用第二类 吸收式热泵回收内燃机缸套水余热的系统。 [0005] In view of the problem of waste water energy of the existing gas engine cylinder liner, 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.
[0006] 本发明采用以下的技术方案： [0006] The present invention uses the following technical solutions:
[0007] 一种利用第二类吸收式热泵回收内燃机缸套水余热的系统， 包括燃气内燃机、 第二类吸收式热泵、 燃气锅炉、 除氧器、 回水管路和软水管路， 所述燃气内燃 机设置有高温缸套水管路， 高温缸套水管路与第二类吸收式热泵相连， 回水管 路为燃气锅炉回水， 软水管路为燃气锅炉补水， 所述回水管路依次与第二类吸 收式热泵和除氧器相连， 所述软水管路依次与第二类吸收式热泵和除氧器相连 ； 除氧器与燃气锅炉相连。 [0007] 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.
[0008] 优选地， 所述第二类吸收式热泵包括一级吸收器、 二级吸收器、 一级发生器、 二级发生器、 冷凝器和蒸发器； [0008] Preferably, 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;
[0009] 所述蒸发器与二级吸收器相连， 二级吸收器与一级发生器相连， 一级发生器与 一级吸收器相连， 一级吸收器与二级发生器相连， 二级发生器与冷凝器相连， 冷凝器与蒸发器相连； [0009] 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;
[0010] 所述高温缸套水管路依次与蒸发器、 一级发生器和二级发生器相连， 回水管路 与二级吸收器相连， 软水管路分别与一级吸收器和冷凝器相连。 [0010] 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.
[0011] 优选地， 高温缸套水管路内的高温缸套水先在蒸发器内被吸收第一部分热量， 第一部分热量传递给二级吸收器， 回水管路经过二级吸收器， 将二级吸收器内 的第一部分热量吸收， 提高回水管路内的水温； 之后， 高温缸套水在一级发生 器内被吸收第二部分热量， 第二部分热量传递给一级吸收器， 软水管路经过一 级吸收器， 将一级吸收器内的第二部分热量吸收， 提高软水管路内的水温； 最 后， 高温缸套水在二级发生器内被吸收第三部分热量， 第三部分热量传递给冷 凝器， 软水管路经过冷凝器， 将冷凝器内的第三部分热量吸收， 提高软水管路 内的水温。 [0011] Preferably, 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 pipe.
发明的有益效果 Beneficial effects of invention
有益效果 Beneficial effect
[0012] 本发明具有的有益效果是： [0012] The beneficial effects of the present invention are:
[0013] 本发明提供的利用第二类吸收式热泵回收内燃机缸套水余热的系统， 燃气内燃 机产生的高温缸套水送至第二类吸收式热泵， 回水管路和软水管路也接入第二 类吸收式热泵， 高温缸套水的热量将回水和软水的温度提高， 提高后的回水和 软水在除氧器中混合后， 送入燃气锅炉。 本发明采用第二类吸收式热泵将缸套 水的余热提取出来， 达到降低系统能耗， 回收废热节能减排的目的， 避免了能 源的浪费， 提高能源利用率。 对附图的简要说明 [0013] 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. In the second type of absorption heat pump, 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. In the present invention, 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. Brief description of the drawings
附图说明 BRIEF DESCRIPTION
[0014] 图 1为利用第二类吸收式热泵回收内燃机缸套水余热的系统结构图。 [0014] 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.
[0015] 图 2为第二类吸收式热泵的结构示意图。 [0015] FIG. 2 is a schematic structural diagram of a second type of absorption heat pump.
发明实施例 Invention Example
本发明的实施方式 Embodiments of the invention
[0016] 下面结合附图和具体实施例对本发明的具体实施方式做进一步说明： [0016] The following describes the specific implementation of the present invention with reference to the accompanying drawings and specific embodiments:
[0017] 结合图 1和图 2， 一种利用第二类吸收式热泵回收内燃机缸套水余热的系统， 包 括燃气内燃机 1、 第二类吸收式热泵 2、 燃气锅炉 3、 除氧器 4、 回水管路 5和软水 管路 6。 [0017] With reference to FIGS. 1 and 2, 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.
[0018] 其中， 燃气内燃机 1设置有高温缸套水管路 7， 高温缸套水管路 7与第二类吸收 式热泵 2相连。 [0018] Wherein, 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.
[0019] 回水管路 5为燃气锅炉回水， 软水管路 6为燃气锅炉补水。 [0019] The return water pipeline 5 is the return water of the gas boiler, and the soft water pipeline 6 is the supplementary water of the gas boiler.
[0020] 回水管路依次与第二类吸收式热泵 2和除氧器 4相连。 [0020] The return water pipeline is connected to the second type absorption heat pump 2 and the deaerator 4 in sequence.
[0021] 软水管路依次与第二类吸收式热泵 2和除氧器 4相连。 [0021] The soft water pipeline is sequentially connected to the second type absorption heat pump 2 and the deaerator 4.
[0022] 除氧器 4与燃气锅炉 3相连。 [0022] The deaerator 4 is connected to the gas boiler 3.
[0023] 具体的， 如图 2， 第二类吸收式热泵包括一级吸收器 8、 二级吸收器 9、 一级发 生器 10、 二级发生器 11、 冷凝器 12和蒸发器 13。 [0023] Specifically, as shown in FIG. 2, 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.
[0024] 蒸发器 13与二级吸收器 9相连， 二级吸收器 9与一级发生器 10相连， 一级发生器 与一级吸收器 8相连， 一级吸收器与二级发生器 11相连， 二级发生器与冷凝器 12 相连， 冷凝器与蒸发器相连。 [0024] 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.
[0025] 高温缸套水管路 7依次与蒸发器、 一级发生器和二级发生器相连， 即高温缸套 水管路内的缸套水依次流经蒸发器、 一级发生器和二级发生器。 [0025] 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.
[0026] 回水管路 5与二级吸收器 9相连， 回水管路内的回水流经二级吸收器。 [0026] 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.
[0027] 软水管路 6分别与一级吸收器 8和冷凝器 12相连， 即软水管路内的软水既流经吸 收器， 也可流经冷凝器。 [0027] 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.
[0028] 高温缸套水管路内的高温缸套水先在蒸发器内被吸收第一部分热量， 第一部分 热量传递给二级吸收器， 回水管路经过二级吸收器， 将二级吸收器内的第一部 分热量吸收， 提高回水管路内的水温； [0028] 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
[0029] 之后， 高温缸套水在一级发生器内被吸收第二部分热量， 第二部分热量传递给 一级吸收器， 软水管路经过一级吸收器， 将一级吸收器内的第二部分热量吸收 ， 提高软水管路内的水温； [0029] After that, 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;
[0030] 最后， 高温缸套水在二级发生器内被吸收第三部分热量， 第三部分热量传递给 冷凝器， 软水管路经过冷凝器， 将冷凝器内的第三部分热量吸收， 提高软水管 路内的水温。 [0030] Finally, 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.
[0031] 实施例 1 Example 1
[0032] 自燃气内燃机出来的高温缸套水水温为 97°C， 回水管路内回水的初始水温为 90 °C, 软水管路内软水的初始水温为 20°C。 [0032] 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, and the initial water temperature of the soft water in the soft water pipeline is 20°C.
[0033] 高温缸套水 97°C水温进入蒸发器， 在蒸发器内被吸收第一部分热量后， 水温降 至 90.5°C， 这部分热量传递给二级吸收器， 回水管路经过二级吸收器， 将二级吸 收器内的第一部分热量吸收， 回水水温由 90°C提高到 135°C， 135°C的高温回水送 至除氧器； [0033] 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;
[0034] 之后， 90.5°C的缸套水进入一级发生器内， 被吸收第二部分热量后， 水温降至 8 3°C, 这部分热量传递给一级吸收器， 软水管路经过一级吸收器， 将一级吸收器 内的第二部分热量吸收， 软水水温由 20°C提高到 40°C， 40°C的软水送至除氧器； [0034] After that, 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;
[0035] 最后， 83°C的缸套水进入二级发生器内， 被吸收第三部分热量后， 水温降至 75 °C， 回流至燃气内燃机， 第三部分热量传递给冷凝器， 软水管路经过冷凝器， 将 冷凝器内的第三部分热量吸收， 软水水温由 20°C提高到 40°C， 40°C的软水送至除 氧器。 [0035] Finally, 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.
[0036] 除氧器内回水与软水混合除氧后， 除氧器出口水温为 104°C， 之后， 除氧水进 入锅炉。 [0036] After the deaerator backwater is mixed with soft water for deaeration, the outlet water temperature of the deaerator is 104°C, and then the deaerated water enters the boiler.
[0037] 当然， 上述说明并非是对本发明的限制， 本发明也并不仅限于上述举例， 本技 术领域的技术人员在本发明的实质范围内所做出的变化、 改型、 添加或替换， 也应属于本发明的保护范围。 [0037] Of course, the above description is not a limitation of the present invention, and the present invention is not limited to the above examples, the changes, modifications, additions or replacements made by those skilled in the art within the essential scope of the present invention are also It should belong to the protection scope of the present invention.

Claims

权利要求书 Claims
[权利要求 1] 一种利用第二类吸收式热泵回收内燃机缸套水余热的系统， 其特征在 于， 包括燃气内燃机、 第二类吸收式热泵、 燃气锅炉、 除氧器、 回水 管路和软水管路， 所述燃气内燃机设置有高温缸套水管路， 高温缸套 水管路与第二类吸收式热泵相连， 回水管路为燃气锅炉回水， 软水管 路为燃气锅炉补水， 所述回水管路依次与第二类吸收式热泵和除氧器 相连， 所述软水管路依次与第二类吸收式热泵和除氧器相连； 除氧器 与燃气锅炉相连。 [Claim 1] A system for recovering waste heat of cylinder liner water of an internal combustion engine using a second type absorption heat pump, characterized in that it includes a gas internal combustion engine, a second type absorption heat pump, a gas boiler, a deaerator, a return water line and a soft A water pipeline, the gas internal combustion engine is provided with a high-temperature liner water pipeline, the high-temperature liner water pipeline is connected to a second type absorption heat pump, the return water pipeline is a gas boiler return water, and the soft water pipeline is a gas boiler water supply, and the return water pipe The circuit is connected to the second type absorption heat pump and the deaerator in sequence, and the soft water pipeline is connected to the second type absorption heat pump and the deaerator in sequence; the deaerator is connected to the gas boiler.
[权利要求 2] 根据权利要求 1所述的一种利用第二类吸收式热泵回收内燃机缸套水 余热的系统， 其特征在于， 所述第二类吸收式热泵包括一级吸收器、 二级吸收器、 一级发生器、 二级发生器、 冷凝器和蒸发器； 所述蒸发器与二级吸收器相连， 二级吸收器与一级发生器相连， 一级 发生器与一级吸收器相连， 一级吸收器与二级发生器相连， 二级发生 器与冷凝器相连， 冷凝器与蒸发器相连； [Claim 2] A system for recovering waste heat of cylinder liner water of an internal combustion engine using a second type absorption heat pump according to claim 1, wherein the second type absorption heat pump includes a primary absorber and a secondary Absorber, primary generator, secondary generator, condenser and evaporator; the evaporator is connected to the secondary absorber, the secondary absorber is connected to the primary generator, and the primary generator is connected to the primary absorber Connected, the primary absorber is connected to the secondary generator, the secondary generator is connected to the condenser, and the condenser is connected to the evaporator;
所述高温缸套水管路依次与蒸发器、 一级发生器和二级发生器相连， 回水管路与二级吸收器相连， 软水管路分别与一级吸收器和冷凝器相 连。 The high-temperature cylinder jacket water pipeline is connected to the evaporator, the first-level generator and the second-level generator in sequence, the return water pipeline is connected to the second-level absorber, and the soft water pipeline is connected to the first-level absorber and the condenser, respectively.
[权利要求 3] 根据权利要求 2所述的一种利用第二类吸收式热泵回收内燃机缸套水 余热的系统， 其特征在于， 高温缸套水管路内的高温缸套水先在蒸发 器内被吸收第一部分热量， 第一部分热量传递给二级吸收器， 回水管 路经过二级吸收器， 将二级吸收器内的第一部分热量吸收， 提高回水 管路内的水温； 之后， 高温缸套水在一级发生器内被吸收第二部分热 量， 第二部分热量传递给一级吸收器， 软水管路经过一级吸收器， 将 一级吸收器内的第二部分热量吸收， 提高软水管路内的水温； 最后， 高温缸套水在二级发生器内被吸收第三部分热量， 第三部分热量传递 给冷凝器， 软水管路经过冷凝器， 将冷凝器内的第三部分热量吸收， 提高软水管路内的水温。 [Claim 3] A system for recovering residual heat of cylinder liner water of an internal combustion engine using a second type absorption heat pump according to claim 2, characterized in that the high temperature liner water in the high temperature liner water line is firstly filtered in the evaporator Absorb the first part of the heat, the first part of the heat is transferred to the secondary absorber, the return water line passes through the secondary absorber, absorbs the first part of the heat in the secondary absorber, and raises the water temperature in the return water line; The second part of the heat is absorbed in the primary generator. The second part of the heat is transferred to the primary absorber. The soft water pipeline passes through the primary absorber to absorb the second part of the heat in the primary absorber and improve the soft water pipeline. The temperature of the water inside; Finally, the high temperature 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, Increase the water temperature in the soft water pipeline.
PCT/CN2019/106349 2018-12-20 2019-09-18 System for recovering waste heat from jacket water of internal combustion engine by using absorption heat transformer WO2020125097A1 (en)

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CN109737642B (en) * 2018-12-20 2020-03-06 青岛新奥清洁能源有限公司 System for recovering waste heat of cylinder liner water of internal combustion engine by using second-class absorption heat pump

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