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CN105371372A - A dehumidification system using low-grade industrial waste heat as a heat source - Google Patents

A dehumidification system using low-grade industrial waste heat as a heat source Download PDF

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Publication number
CN105371372A
CN105371372A CN201510843320.8A CN201510843320A CN105371372A CN 105371372 A CN105371372 A CN 105371372A CN 201510843320 A CN201510843320 A CN 201510843320A CN 105371372 A CN105371372 A CN 105371372A
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industrial waste
waste heat
low
heat source
heat
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邵友元
隋军
杨晓西
秦贯丰
蒋润花
杨敏林
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Dongguan University of Technology
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Dongguan University of Technology
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F3/00Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
    • F24F3/12Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
    • F24F3/14Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24VCOLLECTION, PRODUCTION OR USE OF HEAT NOT OTHERWISE PROVIDED FOR
    • F24V99/00Subject matter not provided for in other main groups of this subclass
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F3/00Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
    • F24F3/12Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
    • F24F3/14Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification
    • F24F2003/144Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification by dehumidification only

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Drying Of Gases (AREA)

Abstract

本发明公开了一种利用低品位工业余热作为热源的除湿系统,该除湿系统包括在工业余热排放管道上设置LiCl溶液吸收式除湿机,工业余热通过管道流经LiCl溶液吸收式除湿机的热源端,LiCl溶液吸收式除湿机利用工业余热对空气进行除湿。本发明可以对低品位工业余热进行利用,大大提高了能源的利用率,节能环保。

The present invention discloses a dehumidification system using low-grade industrial waste heat as a heat source. The dehumidification system includes a LiCl solution absorption dehumidifier arranged on an industrial waste heat discharge pipeline. The industrial waste heat flows through the heat source end of the LiCl solution absorption dehumidifier through the pipeline. The LiCl solution absorption dehumidifier uses the industrial waste heat to dehumidify the air. The present invention can utilize low-grade industrial waste heat, greatly improve the utilization rate of energy, and save energy and protect the environment.

Description

一种利用低品位工业余热作为热源的除湿系统A dehumidification system using low-grade industrial waste heat as a heat source

技术领域technical field

本发明涉及工业废水余热回收利用技术,具体说是一种将工业废水中的余热用于除湿的系统。The invention relates to a technology for recovering and utilizing waste heat of industrial waste water, in particular to a system for using waste heat in industrial waste water for dehumidification.

背景技术Background technique

随着世界资源的日益短缺,全世界都在倡导科学用能、节约用能。针对我国来说,我们的能源利用率仅仅为30%,大量的能量以余热的形式排放到环境中,未能够得到充分的回收再利用。近年来对余热的回收利用逐渐引起人们的重视,例如利用高品位的烟气余热进行蓄能、制冷等等,这类余热往往温度高达300‐600摄氏度,非常容易被再次利用。但是对于低品位余热的利用目前还未有见成效,比如在我们现在生产活动中应用的内燃机用于冷却缸套的缸套水、或化工、纺织、金属冶炼等生产工作中产生的工业废水,其水温最高只有85摄氏度左右,属于不易被利用的低品位余热,现在这部分热量只能白白排放到环境中,如果能够将这部分低品位余热回收利用起来,将会节约更大量的资源。With the increasing shortage of world resources, the whole world is advocating scientific energy use and energy conservation. For our country, our energy utilization rate is only 30%, and a large amount of energy is discharged into the environment in the form of waste heat, which cannot be fully recovered and reused. In recent years, the recovery and utilization of waste heat has gradually attracted people's attention, such as using high-grade flue gas waste heat for energy storage, refrigeration, etc. This kind of waste heat often has a temperature as high as 300-600 degrees Celsius and is very easy to be reused. However, the utilization of low-grade waste heat has not yet been effective, such as the cylinder jacket water used to cool the cylinder jacket of the internal combustion engine used in our current production activities, or the industrial waste water produced in the production work of chemical industry, textile, metal smelting, etc. The highest water temperature is only about 85 degrees Celsius, which belongs to low-grade waste heat that is not easy to be used. Now this part of heat can only be discharged into the environment in vain. If this part of low-grade waste heat can be recycled, it will save a lot of resources.

发明内容Contents of the invention

本发明的任务是针对上述技术问题,提出一种节能、环保的将低品位工业余热用于除湿的系统。The task of the present invention is to propose an energy-saving and environment-friendly system for using low-grade industrial waste heat for dehumidification aiming at the above-mentioned technical problems.

技术手段:本发明公开了一种利用低品位工业余热作为热源的除湿系统,该除湿系统包括在工业余热排放管道上设置LiCl溶液吸收式除湿机,工业余热通过管道流经LiCl溶液吸收式除湿机的热源端,LiCl溶液吸收式除湿机利用工业余热对空气进行除湿。其中,低品位工业余热为工业废水、低温烟气或工业中用于降温的循环水。Technical means: The present invention discloses a dehumidification system using low-grade industrial waste heat as a heat source. The dehumidification system includes setting a LiCl solution absorption dehumidifier on the industrial waste heat discharge pipeline, and the industrial waste heat flows through the LiCl solution absorption dehumidifier through the pipeline. At the heat source end, the LiCl solution absorption dehumidifier uses industrial waste heat to dehumidify the air. Among them, low-grade industrial waste heat is industrial wastewater, low-temperature flue gas or circulating water used for cooling in industry.

进一步讲,低品位工业余热为内燃机缸套热水,相应的系统还包括在内燃机缸套水的出水口通过外部管道与其入水口连接形成的缸套水外循环回路和热水泵,热水泵和LiCl溶液吸收式除湿机的热源端设置在缸套水外循环回路上,缸套水流经内燃机缸套后吸收缸套上的热量温度升高,高温的缸套水在热水泵的作用下通过缸套水外循环回路流入LiCl溶液吸收式除湿机的热源端,缸套水的热量被LiCl溶液吸收式除湿机吸收后温度降低,再通过缸套水外循环回路流入内燃机缸套水入水口;该系统还包括冷却机,冷却机设置在LiCl溶液吸收式除湿机与所述内燃机缸套水入水口之间的管道上。Further speaking, the low-grade industrial waste heat is the hot water for the cylinder jacket of the internal combustion engine, and the corresponding system also includes the jacket water external circulation circuit formed by connecting the outlet of the cylinder jacket water of the internal combustion engine to the water inlet through an external pipe, and a heat pump, heat pump and LiCl The heat source end of the solution absorption dehumidifier is set on the outer circulation circuit of the cylinder jacket water. After the cylinder jacket water flows through the cylinder jacket of the internal combustion engine, it absorbs the heat on the cylinder jacket and the temperature rises. The high-temperature cylinder jacket water passes through the cylinder jacket under the action of the hot water pump. The water external circulation loop flows into the heat source end of the LiCl solution absorption dehumidifier, the heat of the jacket water is absorbed by the LiCl solution absorption dehumidifier and the temperature decreases, and then flows into the cylinder jacket water inlet of the internal combustion engine through the jacket water external circulation loop; the system It also includes a cooling machine, which is arranged on the pipeline between the LiCl solution absorption dehumidifier and the water inlet of the cylinder jacket of the internal combustion engine.

有益效果:本发明利用低品位工业余热进行除湿,将低品位工业余热通过管道运送到LiCl溶液吸收式除湿机的热源端,LiCl溶液吸收式除湿机利用大量低品位热源对空气进行除湿,实现了将低品质余热回收再利用,节能环保。Beneficial effects: the invention utilizes low-grade industrial waste heat for dehumidification, and transports the low-grade industrial waste heat to the heat source end of the LiCl solution absorption dehumidifier through pipelines, and the LiCl solution absorption dehumidifier uses a large number of low-grade heat sources to dehumidify the air, realizing Recycle and reuse low-quality waste heat, saving energy and environmental protection.

附图说明Description of drawings

图1为本发明的示意图。Figure 1 is a schematic diagram of the present invention.

具体实施方式detailed description

本发明公开了一种利用低品位工业余热作为热源的除湿系统,该除湿系统包括在工业余热排放管道上设置LiCl溶液吸收式除湿机,工业余热通过管道流经LiCl溶液吸收式除湿机的热源端,LiCl溶液吸收式除湿机利用工业余热对空气进行除湿。其中,低品位工业余热为工业废水、低温烟气或工业中用于降温的循环水。The invention discloses a dehumidification system using low-grade industrial waste heat as a heat source. The dehumidification system includes setting a LiCl solution absorption dehumidifier on an industrial waste heat discharge pipeline, and the industrial waste heat flows through the heat source end of the LiCl solution absorption dehumidifier through the pipeline. , LiCl solution absorption dehumidifier uses industrial waste heat to dehumidify the air. Among them, low-grade industrial waste heat is industrial wastewater, low-temperature flue gas or circulating water used for cooling in industry.

本实施例以内燃机缸套热水为余热热源建立了一套将内燃机缸套水余热用于除湿的系统,并在该系统上设置了多个测量点用于测量各个阶段的温度值,以测试并说明本系统的余热利用效率。In this embodiment, a set of system that uses the waste heat of the cylinder jacket water of the internal combustion engine for dehumidification is established by using the hot water of the cylinder jacket of the internal combustion engine as the waste heat heat source, and a plurality of measuring points are set on the system to measure the temperature values of each stage, so as to test And explain the waste heat utilization efficiency of this system.

如图1所示,该系统包括在内燃机1缸套水的出水口11通过外部管道与其入水口12连接形成的缸套水外循环回路、热水泵2、LiCl溶液吸收式除湿机3和冷却机4,热水泵2、LiCl溶液吸收式除湿机3的热源端和冷却机4依次设置在缸套水外循环回路上。为测量除湿效率,在缸套水外循环回路上还设有用于测量缸套水出水温度的第一热电偶温度计5、用于测量缸套水回水温度的第三热电偶温度计7和用于测量经过LiCl溶液吸收式除湿机3后的缸套水温度的第二热电偶温度计6,以及测量缸套水流量的流量计8。As shown in Figure 1, the system includes a jacket water outer circulation circuit formed by connecting the jacket water outlet 11 of the internal combustion engine 1 to the water inlet 12 through an external pipe, a hot water pump 2, a LiCl solution absorption dehumidifier 3 and a cooler 4. The hot water pump 2, the heat source end of the LiCl solution absorption dehumidifier 3 and the cooling machine 4 are sequentially arranged on the jacket water outer circulation circuit. In order to measure the dehumidification efficiency, a first thermocouple thermometer 5 for measuring the outlet water temperature of the jacket water, a third thermocouple thermometer 7 for measuring the return water temperature of the jacket water and a The second thermocouple thermometer 6 for measuring the temperature of the jacket water passing through the LiCl solution absorption dehumidifier 3, and the flow meter 8 for measuring the flow rate of the jacket water.

缸套水流经内燃机缸套后吸收缸套上的热量温度升高,高温的缸套水在热水泵2的作用下通过缸套水外循环回路流入LiCl溶液吸收式除湿机3的热源端,缸套水的热量被LiCl溶液吸收式除湿机3吸收后温度降低,然后缸套水经过冷却机4再次降温后通过缸套水外循环回路流入内燃机缸套水入水口,再次为缸套降温,如此反复。After the cylinder liner water flows through the cylinder liner of the internal combustion engine, it absorbs the heat on the liner and the temperature rises. Under the action of the hot water pump 2, the high temperature liner water flows into the heat source end of the LiCl solution absorption dehumidifier 3 through the liner water external circulation circuit, and the cylinder The heat of the jacket water is absorbed by the LiCl solution absorption dehumidifier 3 and the temperature drops, and then the jacket water is cooled again by the cooler 4 and then flows into the jacket water inlet of the internal combustion engine through the jacket water external circulation circuit to cool the jacket again. repeatedly.

本实施中使用的LiCl溶液吸收式除湿机主要由除湿器和再生器组成,以LiCl溶液为工质,除湿器处理风量:0~800m3/h;除湿后送风温度:(可调)10~25±0.5℃;送风相对湿度:≤50±3%;送风绝对湿度:≤10g/kg(干空气);LiCl溶液浓度:30%‐36%。The LiCl solution absorption dehumidifier used in this implementation is mainly composed of a dehumidifier and a regenerator, using LiCl solution as the working fluid, the air volume of the dehumidifier: 0-800m 3 /h; the air supply temperature after dehumidification: (adjustable) 10 ~25±0.5℃; relative humidity of supply air: ≤50±3%; absolute humidity of supply air: ≤10g/kg (dry air); concentration of LiCl solution: 30%‐36%.

经过测量,缸套水出水温度在85℃,在缸套水流量为0.86m3/h时,每小时可对600-800m3相对湿度为87%、温度为35℃的空气进行除湿,除湿后的空气相对湿度可降低至35%、温度为31℃。经过LiCl溶液吸收式除湿机3后的缸套水温度为70℃左右。可见本系统相对于常规的一次能源利用,其能源利用率提高了15%,相对节能率提高了20%。After measurement, the outlet water temperature of the jacket water is 85°C. When the jacket water flow rate is 0.86m 3 /h, it can dehumidify 600-800m 3 of air with a relative humidity of 87% and a temperature of 35°C per hour. After dehumidification The relative humidity of the air can be reduced to 35%, and the temperature is 31°C. The temperature of the jacket water after passing through the LiCl solution absorption dehumidifier 3 is about 70°C. It can be seen that compared with the conventional primary energy utilization, the energy utilization rate of this system has increased by 15%, and the relative energy saving rate has increased by 20%.

Claims (5)

1.一种利用低品位工业余热作为热源的除湿系统,其特征在于:所述除湿系统包括在工业余热排放管道上设置LiCl溶液吸收式除湿机,工业余热通过管道流经LiCl溶液吸收式除湿机的热源端,LiCl溶液吸收式除湿机利用工业余热对空气进行除湿。1. A dehumidification system utilizing low-grade industrial waste heat as a heat source, characterized in that: the dehumidification system includes setting a LiCl solution absorption dehumidifier on the industrial waste heat discharge pipeline, and the industrial waste heat flows through the LiCl solution absorption dehumidifier through the pipeline At the heat source end, the LiCl solution absorption dehumidifier uses industrial waste heat to dehumidify the air. 2.根据权利要求1所述的利用低品位工业余热作为热源的除湿系统,其特征在于:所述低品位工业余热为工业废水、低温烟气或工业中用于降温的循环水。2. The dehumidification system using low-grade industrial waste heat as a heat source according to claim 1, wherein the low-grade industrial waste heat is industrial waste water, low-temperature flue gas or circulating water used for cooling in industry. 3.根据权利要求1所述的利用低品位工业余热作为热源的除湿系统,其特征在于:所述低品位工业余热为内燃机缸套热水。3. The dehumidification system using low-grade industrial waste heat as a heat source according to claim 1, characterized in that: the low-grade industrial waste heat is hot water for cylinder jackets of internal combustion engines. 4.根据权利要求3所述的利用低品位工业余热作为热源的除湿系统,其特征在于:所述系统包括在内燃机缸套水的出水口通过外部管道与其入水口连接形成的缸套水外循环回路和热水泵,热水泵和所述LiCl溶液吸收式除湿机的热源端设置在缸套水外循环回路上,缸套水流经内燃机缸套后吸收缸套上的热量温度升高,高温的缸套水在热水泵的作用下通过缸套水外循环回路流入LiCl溶液吸收式除湿机的热源端,缸套水的热量被LiCl溶液吸收式除湿机吸收后温度降低,再通过缸套水外循环回路流入内燃机缸套水入水口。4. The dehumidification system using low-grade industrial waste heat as a heat source according to claim 3, characterized in that: the system includes an external circulation of the jacket water formed by connecting the outlet of the cylinder jacket water of the internal combustion engine to the water inlet through an external pipeline loop and hot water pump, the heat source end of the hot water pump and the LiCl solution absorption dehumidifier is arranged on the jacket water outer circulation circuit, and the jacket water flows through the cylinder jacket of the internal combustion engine to absorb the heat on the cylinder jacket and the temperature rises, and the high temperature cylinder Under the action of the hot water pump, the jacket water flows into the heat source end of the LiCl solution absorption dehumidifier through the jacket water external circulation loop. The circuit flows into the jacket water inlet of the internal combustion engine. 5.根据权利要求4所述的利用低品位工业余热作为热源的除湿系统,其特征在于:包括冷却机,冷却机设置在所述LiCl溶液吸收式除湿机与所述内燃机缸套水入水口之间的管道上。5. The dehumidification system using low-grade industrial waste heat as a heat source according to claim 4, characterized in that: it includes a cooler, and the cooler is arranged between the LiCl solution absorption dehumidifier and the cylinder jacket water inlet of the internal combustion engine between the pipes.
CN201510843320.8A 2015-11-26 2015-11-26 A dehumidification system using low-grade industrial waste heat as a heat source Pending CN105371372A (en)

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CN105907426A (en) * 2016-04-13 2016-08-31 湖南大学 Solar energy and biomass coupled heat-electricity-cool triplex cogeneration system
CN110578950A (en) * 2019-09-20 2019-12-17 四川杰瑞恒日天然气工程有限公司 method for supplying domestic hot water and heating by using internal combustion engine cylinder sleeve water
CN115369433A (en) * 2022-08-10 2022-11-22 中国电力科学研究院有限公司 Modular electricity-hydrogen coupling energy system and method

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CN204591523U (en) * 2014-12-16 2015-08-26 广东宏达工贸集团有限公司 A Distributed Cogeneration System of Cooling, Heating and Power

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105907426A (en) * 2016-04-13 2016-08-31 湖南大学 Solar energy and biomass coupled heat-electricity-cool triplex cogeneration system
CN110578950A (en) * 2019-09-20 2019-12-17 四川杰瑞恒日天然气工程有限公司 method for supplying domestic hot water and heating by using internal combustion engine cylinder sleeve water
CN115369433A (en) * 2022-08-10 2022-11-22 中国电力科学研究院有限公司 Modular electricity-hydrogen coupling energy system and method

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Application publication date: 20160302