CN110056898A - 一种适用于高温烟气的消白系统 - Google Patents

一种适用于高温烟气的消白系统 Download PDF

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CN110056898A
CN110056898A CN201910298532.0A CN201910298532A CN110056898A CN 110056898 A CN110056898 A CN 110056898A CN 201910298532 A CN201910298532 A CN 201910298532A CN 110056898 A CN110056898 A CN 110056898A
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flue gas
waste heat
heat boiler
air
heat exchanger
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季元良
张玉斌
林科
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Shandong Bloan Electric Power Technology Co Ltd
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Shandong Bloan Electric Power Technology Co Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/002—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by condensation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/005—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by heat treatment
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B1/00—Methods of steam generation characterised by form of heating method
    • F22B1/02—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers
    • F22B1/18—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers the heat carrier being a hot gas, e.g. waste gas such as exhaust gas of internal-combustion engines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J15/00—Arrangements of devices for treating smoke or fumes
    • F23J15/006—Layout of treatment plant
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J15/00—Arrangements of devices for treating smoke or fumes
    • F23J15/06—Arrangements of devices for treating smoke or fumes of coolers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J15/00—Arrangements of devices for treating smoke or fumes
    • F23J15/08—Arrangements of devices for treating smoke or fumes of heaters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
    • F23L15/00—Heating of air supplied for combustion
    • F23L15/04—Arrangements of recuperators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
    • F27D17/004—Systems for reclaiming waste heat
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2257/00—Components to be removed
    • B01D2257/80—Water
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2258/00—Sources of waste gases
    • B01D2258/02—Other waste gases
    • B01D2258/0283—Flue gases
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
    • F27D17/004—Systems for reclaiming waste heat
    • F27D2017/006—Systems for reclaiming waste heat using a boiler
    • Y—GENERAL 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E20/00—Combustion technologies with mitigation potential
    • Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
    • Y—GENERAL 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/25—Process efficiency

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Combustion & Propulsion (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Physics & Mathematics (AREA)
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  • Environmental & Geological Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Air Supply (AREA)
  • Chimneys And Flues (AREA)

Abstract

本发明公开了一种适用于高温烟气的消白系统，由余热锅炉、空气预热器、蒸汽加热器、脱硫塔、冷凝换热器组成；烟气先经冷凝换热器进行冷凝除湿，然后掺入热空气进行升温，实现烟气消白；热空气由余热锅炉的排烟、余热锅炉生产的蒸汽两级加热，提高了能源利用效率；烟气加热升温过程不耗水，节约了水资源；改造占用空间较少，适用范围较广，且施工方便，改造成本低。

Description

一种适用于高温烟气的消白系统
技术领域
本发明涉及环境工程技术领域，特别是一种适用于高温烟气的消白系统。
技术背景
目前，我国钢铁、造纸、电力等行业广泛采用湿法脱硫技术对烟气进行处理，脱硫出口烟气为湿饱和状态，通过烟囱排放后会出现白烟现象。湿烟气机械携带的液滴中含有大量盐类，排放烟气中的水液滴蒸发后会产生数量庞大且粒径微小的盐类颗粒物，对环境产生负面影响。而焦炉、窑炉等由于排烟温度较高，白烟现象尤其严重，且造成了巨大的能量浪费。
发明内容
本发明是一种适用于高温烟气的消白系统，由余热锅炉、空气预热器、蒸汽加热器、脱硫塔、冷凝换热器组成；烟气依次通过余热锅炉、空气预热器、脱硫塔、冷凝换热器；空气依次通过空气预热器、蒸汽加热器，然后掺入到冷凝换热器后的烟气中。
进一步所述，空气先经过空气预热器进行一级加热，热源来自余热锅炉排放的烟气；然后在蒸汽加热器中进行二级加热，热源来自余热锅炉产生的蒸汽。
进一步所述，余热锅炉的热源来自高温烟气。
进一步所述，烟气经过冷凝换热器产生的冷凝水作为脱硫补充水。
本发明的有益效果是：烟气先经冷凝换热器进行冷凝除湿，然后掺入热空气进行升温，实现烟气消白；热空气由余热锅炉的排烟、余热锅炉生产的蒸汽两级加热，提高了能源利用效率；烟气加热升温过程不耗水，节约了水资源；改造占用空间较少，适用范围较广，且施工方便，改造成本低。
附图说明
下面结合附图和具体实施方式对使用新型发明进一步描述。
附图为一种适用于高温烟气的消白系统示意图。
图中：1、余热锅炉，2、空气预热器，3、蒸汽加热器，4、脱硫塔，5、冷凝换热器。
具体实施方式
由附图所示，一种适用于高温烟气的消白系统由1、余热锅炉，2、空气预热器，3、蒸汽加热器，4、脱硫塔5、冷凝换热器组成；消白系统运行时，高温烟气进入余热锅炉1，烟气温度降低、余热锅炉1吸收烟气热量后产生蒸汽；烟气继续流动进入空气预热器2，与空气间接换热后进入脱硫塔4，脱硫后的烟气进入冷凝换热器5降温除湿，去除烟气中的大部分水分和污染物；空气经过空气预热器2进行一级加热，然后进入蒸汽加热器3进行二级加热，加热后的空气掺入到冷凝换热器后的烟气中，然后排放至大气中。
以上所述，实施方式仅仅是对本发明的优选实施方式进行描述，并非对本发明的范围进行限定，在不脱离本发明技术的精神的前提下，本领域工程技术人员对本发明的技术方案作出的各种变形和改进，均应落入本发明的权利要求书确定的保护范围内。

Claims (4)

1.一种适用于高温烟气的消白系统，由余热锅炉、空气预热器、蒸汽加热器、脱硫塔、冷凝换热器组成；烟气依次通过余热锅炉、空气预热器、脱硫塔、冷凝换热器；空气依次通过空气预热器、蒸汽加热器，然后掺入到冷凝换热器后的烟气中。
2.如权利要求1所述的一种适用于高温烟气的消白系统，其特征是：空气先经过空气预热器进行一级加热，热源来自余热锅炉排放的烟气；然后在蒸汽加热器中进行二级加热，热源来自余热锅炉产生的蒸汽。
3.如权利要求1所述的一种适用于高温烟气的消白系统，其特征是：余热锅炉的热源来自高温烟气。
4.如权利要求1所述的一种适用于高温烟气的消白系统，烟气经过冷凝换热器产生的冷凝水作为脱硫补充水。
CN201910298532.0A 2019-04-15 2019-04-15 一种适用于高温烟气的消白系统 Withdrawn CN110056898A (zh)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107433118A (zh) * 2017-07-21 2017-12-05 上海交通大学 一种脱硫烟气消白烟的系统和方法
CN108592067A (zh) * 2018-05-24 2018-09-28 烟台羽林节能科技有限公司 一种液浆冷却联合烟气余热加热混风消除烟羽系统和工艺
CN109052526A (zh) * 2018-08-28 2018-12-21 盛发环保科技（厦门）有限公司 烟气消白耦合高温旁路烟道蒸发高含盐废水零排放系统
CN109237505A (zh) * 2018-09-13 2019-01-18 华电电力科学研究院有限公司 一种烟气分级余热回收冷凝收水消白的装置及其工作方法

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107433118A (zh) * 2017-07-21 2017-12-05 上海交通大学 一种脱硫烟气消白烟的系统和方法
CN108592067A (zh) * 2018-05-24 2018-09-28 烟台羽林节能科技有限公司 一种液浆冷却联合烟气余热加热混风消除烟羽系统和工艺
CN109052526A (zh) * 2018-08-28 2018-12-21 盛发环保科技（厦门）有限公司 烟气消白耦合高温旁路烟道蒸发高含盐废水零排放系统
CN109237505A (zh) * 2018-09-13 2019-01-18 华电电力科学研究院有限公司 一种烟气分级余热回收冷凝收水消白的装置及其工作方法

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