CN110030607A - A kind of smoke waste heat comprehensive utilization system - Google Patents

A kind of smoke waste heat comprehensive utilization system Download PDF

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Publication number
CN110030607A
CN110030607A CN201810349769.2A CN201810349769A CN110030607A CN 110030607 A CN110030607 A CN 110030607A CN 201810349769 A CN201810349769 A CN 201810349769A CN 110030607 A CN110030607 A CN 110030607A
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hot water
flue gas
cold water
cold
water supply
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刘显晨
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Shenyang Aluminum and Magnesium Engineering and Research Institute Co Ltd
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Shenyang Aluminum and Magnesium Engineering and Research Institute Co Ltd
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D3/00—Hot-water central heating systems
    • F24D3/10—Feed-line arrangements, e.g. providing for heat-accumulator tanks, expansion tanks ; Hydraulic components of a central heating system
    • F24D3/1058—Feed-line arrangements, e.g. providing for heat-accumulator tanks, expansion tanks ; Hydraulic components of a central heating system disposition of pipes and pipe connections
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
    • F24F5/0007—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning
    • F24F5/0014—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning using absorption or desorption
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Other Air-Conditioning Systems (AREA)
  • Cleaning Of Streets, Tracks, Or Beaches (AREA)

Abstract

本发明涉及节能领域，具体说是一种烟气余热综合利用系统。该系统包括：烟气换热器、冷水循环泵、吸收式冷水机组、输送系统循环泵、终端用户，热水供水管路和冷水供水管路汇集到输送系统循环泵，根据需要控制进行热水供水或冷水供水给终端用户，冷水回水经过吸收式冷水机组将产生的热水回水输送至烟气换热器，再经热水回水管路输送至终端用户；利用烟气换热器的换出的热水作为集中空调的动力源，采用吸收式冷水机组制备冷水，作为夏季制冷的冷源；利用冬季供暖的管网系统输送冷水至各个用户，实现各个用户的集中供冷。本发明主要是利用低温烟气为终端用户冬季采暖和夏季供冷提供冷热源，并实现余热利用达到节能的目的。The invention relates to the field of energy saving, in particular to a comprehensive utilization system of flue gas waste heat. The system includes: flue gas heat exchanger, cold water circulating pump, absorption chiller, conveying system circulating pump, end users, hot water supply pipeline and cold water supply pipeline are collected to the conveying system circulating pump, and the hot water is controlled according to needs. Water or cold water is supplied to the end user, and the cold water return water is sent to the flue gas heat exchanger through the absorption chiller, and then to the end user through the hot water return pipeline; The exchanged hot water is used as the power source of the central air conditioner, and the absorption chiller is used to prepare cold water as the cold source for cooling in summer; the pipe network system for heating in winter is used to transport cold water to each user to realize the centralized cooling of each user. The invention mainly utilizes low-temperature flue gas to provide cold and heat sources for end users for heating in winter and cooling in summer, and realizes the purpose of energy saving by utilizing waste heat.

Description

一种烟气余热综合利用系统A comprehensive utilization system of flue gas waste heat

技术领域technical field

本发明涉及节能领域，具体说是一种烟气余热综合利用系统。The invention relates to the field of energy saving, in particular to a comprehensive utilization system of flue gas waste heat.

背景技术Background technique

工业领域中存在大量低温烟气，温度一般在100℃～120℃，该部分烟气因为温度较低，多数被直接排放，造成大量的能源浪费。There is a large amount of low-temperature flue gas in the industrial field, and the temperature is generally 100 ° C ~ 120 ° C. Because of the low temperature, most of this part of the flue gas is directly discharged, resulting in a lot of energy waste.

现阶段对工业领域低温烟气中的余热利用，大部分利用烟气热量进行采暖以及制备卫生热水，冬季利用率高。在夏季仅能作为制备卫生热水的热源，大量烟气被直接排入大气，安装在烟气管道上的换热器也以及热水循环系统在夏季均闲置不用，夏季能源利用率低。At this stage, most of the waste heat in the low-temperature flue gas in the industrial field is used for heating and the preparation of sanitary hot water, and the utilization rate is high in winter. In summer, it can only be used as a heat source for preparing sanitary hot water, and a large amount of flue gas is directly discharged into the atmosphere. The heat exchanger installed on the flue gas pipeline and the hot water circulation system are also idle in summer, and the energy utilization rate is low in summer.

而对于工业厂区内有一部分厂房有制冷需求，而现阶段多采用分体式空调作为制冷设备实现制冷，此方案不但设备分散，不易管理，而且空调机组以电力作为动力源，电耗高，运行成本高。因此，有必要考虑冬夏季均可利用烟气余热的方案。However, some factories in the industrial plant area have refrigeration needs, and at this stage, split air conditioners are mostly used as refrigeration equipment to achieve refrigeration. This solution not only has scattered equipment and is difficult to manage, but also uses electricity as the power source for the air-conditioning units, resulting in high power consumption and operating costs. high. Therefore, it is necessary to consider the scheme of utilizing the waste heat of flue gas in both winter and summer.

发明内容SUMMARY OF THE INVENTION

本发明的目的在于提供一种烟气余热综合利用系统，主要是利用低温烟气为终端用户冬季采暖和夏季供冷提供冷热源，并实现余热利用达到节能的目的。The purpose of the present invention is to provide a comprehensive utilization system of flue gas waste heat, which mainly uses low-temperature flue gas to provide cold and heat sources for end users for heating in winter and cooling in summer, and realizes the purpose of energy saving by utilizing waste heat.

本发明的技术方案是：The technical scheme of the present invention is:

一种烟气余热综合利用系统，该系统包括：烟气换热器、冷水循环泵、吸收式冷水机组、输送系统循环泵、终端用户，具体结构如下：A comprehensive utilization system of flue gas waste heat, the system comprises: flue gas heat exchanger, cold water circulating pump, absorption chiller, conveying system circulating pump, end user, and the specific structure is as follows:

烟气换热器上分别连出两条热水供水管路和两条热水回水管路：烟气换热器通过一个热水供水管路连至输送系统循环泵的一个进口，烟气换热器通过另一个热水供水管路连至冷水循环泵的进口，冷水循环泵的出口通过管路连至吸收式冷水机组的一个进口，吸收式冷水机组的一个出口通过冷水供水管路连至输送系统循环泵的另一个进口，输送系统循环泵的出口通过冷、热水供水管路连至终端用户的一个进口，终端用户的出口通过冷水回水管路连至吸收式冷水机组的另一个进口，吸收式冷水机组的另一个出口通过一个热水回水管路连至烟气换热器的进口，烟气换热器通过另一个热水回水管路连至终端用户的另一个进口。The flue gas heat exchanger is connected with two hot water supply pipelines and two hot water return pipelines: the flue gas heat exchanger is connected to an inlet of the circulating pump of the conveying system through a hot water supply pipeline, and the flue gas exchange The heater is connected to the inlet of the cold water circulation pump through another hot water supply pipeline, the outlet of the cold water circulation pump is connected to an inlet of the absorption chiller through the pipeline, and an outlet of the absorption chiller is connected to the cold water supply pipeline to the inlet. The other inlet of the circulating pump of the conveying system, the outlet of the circulating pump of the conveying system is connected to one inlet of the end user through the cold and hot water supply pipeline, and the outlet of the end user is connected to the other inlet of the absorption chiller through the cold water return pipeline , the other outlet of the absorption chiller is connected to the inlet of the flue gas heat exchanger through a hot water return pipeline, and the flue gas heat exchanger is connected to another inlet of the end user through another hot water return pipeline.

所述的烟气余热综合利用系统，热水供水管路、热水回水管路、冷、热水供水管路、冷水回水管路、冷水供水管路上，均设置有控制阀门。In the comprehensive utilization system of flue gas waste heat, the hot water supply pipeline, the hot water return pipeline, the cold and hot water supply pipeline, the cold water return pipeline and the cold water supply pipeline are all provided with control valves.

所述的烟气余热综合利用系统，使用时，热水供水管路和冷水供水管路汇集到输送系统循环泵，根据需要控制进行热水供水或冷水供水给终端用户，冷水回水经过吸收式冷水机组将产生的热水回水输送至烟气换热器，再经热水回水管路输送至终端用户；从而，利用烟气换热器的换出的热水作为集中空调的动力源，采用吸收式冷水机组制备冷水，作为夏季制冷的冷源；利用冬季供暖的管网系统输送冷水至各个用户，实现各个用户的集中供冷；而在冬季，热水直接作为供暖热源使用。In the comprehensive utilization system of flue gas waste heat, when in use, the hot water water supply pipeline and the cold water water supply pipeline are collected into the circulating pump of the conveying system, and the hot water supply or the cold water supply is controlled according to the needs to the end user, and the cold water return water passes through the absorption type. The chiller transmits the generated hot water return water to the flue gas heat exchanger, and then sends it to the end user through the hot water return water pipeline; The absorption chiller is used to prepare cold water as the cold source for cooling in summer; the pipe network system for heating in winter is used to transport cold water to each user to realize the centralized cooling of each user; in winter, the hot water is directly used as a heating source.

本发明的优点及有益效果是：The advantages and beneficial effects of the present invention are:

1、本发明主要针对整个集中供冷、供热系统进行设计，通过对循环输送系统冬夏季运行状况的平衡优化，通过增加吸收式制冷机组实现夏季供冷，利用原有冬季供热管网输送夏季制冷用冷水，既可以实现整个工厂厂区集中供冷，又不增加输送系统的初投资。1. The present invention is mainly designed for the entire centralized cooling and heating system. By optimizing the balance of the operation of the circulating conveying system in winter and summer, the cooling in summer is realized by adding absorption refrigeration units, and the original heating pipe network in winter is used for transportation. Cold water for cooling in summer can realize centralized cooling of the entire factory area without increasing the initial investment of the conveying system.

2、本发明通过以上设计，不但能够实现整个用户区域夏季供冷、冬季供暖的功能，而且夏季采用吸收式制冷机组代替传统制冷机组可以极大程度上降低电耗。2. Through the above design, the present invention can not only realize the functions of cooling in summer and heating in winter for the entire user area, but also use absorption refrigeration units instead of traditional refrigeration units in summer to greatly reduce power consumption.

附图说明Description of drawings

图1为本发明的系统流程图。其中，1.烟气换热器，2.冷水循环泵，3.吸收式冷水机组，4.输送系统循环泵，5.终端用户。FIG. 1 is a system flow chart of the present invention. Among them, 1. Flue gas heat exchanger, 2. Cold water circulating pump, 3. Absorption chiller, 4. Circulating pump of conveying system, 5. End user.

具体实施方式Detailed ways

如图1所示，本发明烟气余热综合利用系统，主要包括：烟气换热器1、冷水循环泵2、吸收式冷水机组3、输送系统循环泵4、终端用户5等，具体结构如下：As shown in Figure 1, the comprehensive utilization system of flue gas waste heat of the present invention mainly includes: flue gas heat exchanger 1, cold water circulating pump 2, absorption chiller 3, conveying system circulating pump 4, end user 5, etc. The specific structure is as follows :

烟气换热器1上分别连出两条热水供水管路和两条热水回水管路：烟气换热器1通过一个热水供水管路连至输送系统循环泵4的一个进口，烟气换热器1通过另一个热水供水管路连至冷水循环泵2的进口，冷水循环泵2的出口通过管路连至吸收式冷水机组3的一个进口，吸收式冷水机组3的一个出口通过冷水供水管路连至输送系统循环泵4的另一个进口，输送系统循环泵4的出口通过冷、热水供水管路连至终端用户5的一个进口，终端用户5的出口通过冷水回水管路连至吸收式冷水机组3的另一个进口，吸收式冷水机组3的另一个出口通过一个热水回水管路连至烟气换热器1的进口，烟气换热器1通过另一个热水回水管路连至终端用户5的另一个进口。The flue gas heat exchanger 1 is respectively connected with two hot water supply pipelines and two hot water return pipelines: the flue gas heat exchanger 1 is connected to an inlet of the circulating pump 4 of the conveying system through a hot water supply pipeline, The flue gas heat exchanger 1 is connected to the inlet of the cold water circulation pump 2 through another hot water supply pipeline, and the outlet of the cold water circulation pump 2 is connected to an inlet of the absorption chiller 3 through the pipeline, and an inlet of the absorption chiller 3 The outlet is connected to the other inlet of the circulating pump 4 of the conveying system through the cold water water supply pipeline. The water pipeline is connected to the other inlet of the absorption chiller 3, and the other outlet of the absorption chiller 3 is connected to the inlet of the flue gas heat exchanger 1 through a hot water return pipeline, and the flue gas heat exchanger 1 passes through another The hot water return line is connected to the other inlet of the end user 5 .

本发明中，所述热水供水管路、热水回水管路、冷水回水管路、冷水供水管路以及冷、热水供水管路上，均设置有控制阀门。In the present invention, the hot water supply pipeline, the hot water return pipeline, the cold water return pipeline, the cold water supply pipeline and the cold and hot water supply pipelines are all provided with control valves.

使用时，热水供水管路和冷水供水管路汇集到输送系统循环泵4，根据需要控制进行热水供水或冷水供水给终端用户5，冷水回水经过吸收式冷水机组3将产生的热水回水输送至烟气换热器1，再经热水回水管路输送至终端用户5。从而，为了充分利用夏季烟气余热，本发明考虑利用烟气换热器1换出的热水作为集中空调的动力源，采用吸收式冷水机组3制备冷水，作为夏季制冷的冷源。利用冬季供暖的管网系统输送冷水至各个用户，实现各个用户的集中供冷。而在冬季，热水直接作为供暖热源使用。这样，能够充分利用夏季烟气的余热。When in use, the hot water supply pipeline and the cold water supply pipeline are collected to the circulating pump 4 of the conveying system, and the hot water supply or the cold water supply is controlled to the end user 5 according to the needs. The return water is sent to the flue gas heat exchanger 1, and then sent to the end user 5 through the hot water return pipeline. Therefore, in order to make full use of the residual heat of the flue gas in summer, the present invention considers using the hot water exchanged by the flue gas heat exchanger 1 as the power source of the central air conditioner, and using the absorption chiller 3 to prepare cold water as the cold source for cooling in summer. The pipe network system for heating in winter is used to transport cold water to each user to realize the centralized cooling of each user. In winter, hot water is used directly as a heating source. In this way, the residual heat of the flue gas in summer can be fully utilized.

结果表明，本发明通过对供热(供冷)系统的优化，最大程度上实现能源的综合利用，并能大幅度降低夏季空调供冷系统能耗。The results show that the invention can realize the comprehensive utilization of energy to the greatest extent by optimizing the heating (cooling) system, and can greatly reduce the energy consumption of the air-conditioning cooling system in summer.

Claims (3)

1.一种烟气余热综合利用系统，其特征在于，该系统包括：烟气换热器、冷水循环泵、吸收式冷水机组、输送系统循环泵、终端用户，具体结构如下：1. a comprehensive utilization system of flue gas waste heat, is characterized in that, this system comprises: flue gas heat exchanger, cold water circulating pump, absorption type chiller, conveying system circulating pump, end user, concrete structure is as follows: 烟气换热器上分别连出两条热水供水管路和两条热水回水管路：烟气换热器通过一个热水供水管路连至输送系统循环泵的一个进口，烟气换热器通过另一个热水供水管路连至冷水循环泵的进口，冷水循环泵的出口通过管路连至吸收式冷水机组的一个进口，吸收式冷水机组的一个出口通过冷水供水管路连至输送系统循环泵的另一个进口，输送系统循环泵的出口通过冷、热水供水管路连至终端用户的一个进口，终端用户的出口通过冷水回水管路连至吸收式冷水机组的另一个进口，吸收式冷水机组的另一个出口通过一个热水回水管路连至烟气换热器的进口，烟气换热器通过另一个热水回水管路连至终端用户的另一个进口。The flue gas heat exchanger is connected with two hot water supply pipelines and two hot water return pipelines: the flue gas heat exchanger is connected to an inlet of the circulating pump of the conveying system through a hot water supply pipeline, and the flue gas exchange The heater is connected to the inlet of the cold water circulation pump through another hot water supply pipeline, the outlet of the cold water circulation pump is connected to an inlet of the absorption chiller through the pipeline, and an outlet of the absorption chiller is connected to the cold water supply pipeline to the inlet. The other inlet of the circulating pump of the conveying system, the outlet of the circulating pump of the conveying system is connected to one inlet of the end user through the cold and hot water supply pipeline, and the outlet of the end user is connected to the other inlet of the absorption chiller through the cold water return pipeline , the other outlet of the absorption chiller is connected to the inlet of the flue gas heat exchanger through a hot water return pipeline, and the flue gas heat exchanger is connected to another inlet of the end user through another hot water return pipeline. 2.按照权利要求1所述的烟气余热综合利用系统，其特征在于，热水供水管路、热水回水管路、冷水回水管路、冷水供水管路以及冷、热水供水管路上，均设置有控制阀门。2. The comprehensive utilization system of flue gas waste heat according to claim 1, characterized in that, on the hot water supply pipeline, the hot water return pipeline, the cold water return pipeline, the cold water supply pipeline and the cold and hot water supply pipelines, All are equipped with control valves. 3.按照权利要求1所述的烟气余热综合利用系统，其特征在于，使用时，热水供水管路和冷水供水管路汇集到输送系统循环泵，根据需要控制进行热水供水或冷水供水给终端用户，冷水回水经过吸收式冷水机组将产生的热水回水输送至烟气换热器，再经热水回水管路输送至终端用户；从而，利用烟气换热器换出的热水作为集中空调的动力源，采用吸收式冷水机组制备冷水，作为夏季制冷的冷源；利用冬季供暖的管网系统输送冷水至各个用户，实现各个用户的集中供冷；而在冬季，热水直接作为供暖热源使用。3. The comprehensive utilization system of flue gas waste heat according to claim 1 is characterized in that, when in use, the hot water water supply pipeline and the cold water water supply pipeline are brought together into the circulating pump of the conveying system, and the hot water water supply or the cold water water supply is controlled as required. For the end user, the cold water return water will be sent to the flue gas heat exchanger through the absorption chiller, and then sent to the end user through the hot water return pipeline; Hot water is used as the power source of central air conditioning, and absorption chillers are used to prepare cold water as a cold source for cooling in summer; the pipe network system for heating in winter is used to transport cold water to each user to achieve central cooling for each user; while in winter, heat Water is used directly as a heat source for heating.
CN201810349769.2A 2018-04-18 2018-04-18 A kind of smoke waste heat comprehensive utilization system Pending CN110030607A (en)

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Cited By (2)

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CN114891520A (en) * 2021-12-29 2022-08-12 司少龙 System for preparing cooling water/heating water by using coke oven flue gas and dry quenching exhaust gas
CN118266399A (en) * 2024-01-24 2024-07-02 苏桐梅 Vertical multilayer pasture plant factory based on flue gas source heat pump heat supply (cooling)

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Application publication date: 20190719