CN106196128B - 用于回收低温烟气热量的装置及其回收热量方法 - Google Patents

用于回收低温烟气热量的装置及其回收热量方法 Download PDF

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CN106196128B
CN106196128B CN201610773550.6A CN201610773550A CN106196128B CN 106196128 B CN106196128 B CN 106196128B CN 201610773550 A CN201610773550 A CN 201610773550A CN 106196128 B CN106196128 B CN 106196128B
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heat
flue
recycling
air duct
tube bundle
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CN106196128A (zh
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姜孝国
高新宇
王刚
路金勋
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Harbin Boiler Co Ltd
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Harbin Boiler Co Ltd
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23JREMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J15/00Arrangements of devices for treating smoke or fumes
    • F23J15/02Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23LSUPPLYING 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
    • F23L15/00Heating of air supplied for combustion
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28DHEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D1/00Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
    • F28D1/02Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
    • F28D1/04Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
    • F28D1/053Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23JREMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J2215/00Preventing emissions
    • F23J2215/20Sulfur; Compounds thereof
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E20/00Combustion technologies with mitigation potential
    • Y02E20/34Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery

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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)
  • Air Supply (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Abstract

用于回收低温烟气热量的装置及其回收热量方法。低温省煤器回收的热量不直接返回锅炉,不能计算成锅炉效率;GGH本身造价高,并且本身需要用电运行成本高,经济性差。本发明的组成包括:烟道壳体(1),烟道壳体两侧分别具有左管板(2)和右管板(3),左管板和右管板之间安装有换热管束(4),一次冷风道(5)通过右管板与换热管束连接,换热管束通过左管板与一次热风道(6)连接,一次热风道的同侧下方安装有二次冷风道(7),二次冷风道通过左管板与换热管束连接,换热管束通过右管板与二次热风道(8)连接。本发明用于回收低温烟气热量的装置及其回收热量方法。

Description

用于回收低温烟气热量的装置及其回收热量方法
技术领域:
本发明涉及一种用于回收低温烟气热量的装置及其回收热量方法。
背景技术:
采用传统优化手段,电站锅炉效率的进一步提升空间不大,进一步降低锅炉的排烟温度,并把回收的热量直接返回锅炉成为进一步提升锅炉效率的方法。电站锅炉在此方面的技术有低温省煤器和GGH两种方式。低温省煤器回收的热量不直接返回锅炉,不能计算成锅炉效率;GGH本身造价高,并且本身需要用电运行成本高,经济性差。
发明内容:
本发明的目的是提供一种用于回收低温烟气热量的装置及其回收热量方法。
上述的目的通过以下的技术方案实现:
一种用于回收低温烟气热量的装置,其组成包括:烟道壳体,所述的烟道壳体两侧分别具有左管板和右管板,所述的左管板和所述的右管板之间安装有换热管束,一次冷风道通过所述的右管板与所述的换热管束连接,所述的换热管束通过所述的左管板与一次热风道连接,所述的一次热风道的同侧下方安装有二次冷风道,所述的二次冷风道通过所述的左管板与所述的换热管束连接,所述的换热管束通过所述的右管板与二次热风道连接。
所述的用于回收低温烟气热量的装置,所述的烟道壳体内一次风系统布置在上侧,二次风系统布置在下侧。
一种所述的用于回收低温烟气热量的装置的回收热量方法,将烟道壳体安装在引风机和脱硫设备之间的连接烟道上,换热管束装在烟道壳体内部,烟气从壳侧通过换热装置,一二次冷风从管侧通过换热装置,一次风通过一次风机加压后通过一次冷风道进入换热管束加热,加热后的热风通过一次热风道进入空预器;二次风通过二次风机加压后通过二次冷风道进入换热管束加热,加热后的热风通过二次热风道进入空预器,一二次风通过换热管束换热从而加热,降低了排烟损失。
本发明的有益效果:
本发明安装在引风机和脱硫设备之间的连接烟道上,可以对一二次风在进入空预器之前进行预热,替代了暖风器,减少厂用电,同时此部分热量直接进入锅炉,可有效提高锅炉效率,布置在引风机之后,避免了因烟温降低对下游设备的低温腐蚀。
附图说明:
附图1是本发明的结构示意图。
附图2是本发明的前视图。
具体实施方式:
实施例1:
一种用于回收低温烟气热量的装置,其组成包括:烟道壳体1,所述的烟道壳体两侧分别具有左管板2和右管板3,所述的左管板和所述的右管板之间安装有换热管束4,一次冷风道5通过所述的右管板与所述的换热管束连接,所述的换热管束通过所述的左管板与一次热风道6连接,所述的一次热风道的同侧下方安装有二次冷风道7,所述的二次冷风道通过所述的左管板与所述的换热管束连接,所述的换热管束通过所述的右管板与二次热风道8连接。
实施例2:
根据实施例1所述的用于回收低温烟气热量的装置,所述的烟道壳体内一次风系统布置在上侧,二次风系统布置在下侧。
实施例3:
一种实施例1或2所述的用于回收低温烟气热量的装置的回收热量方法,将烟道壳体安装在引风机和脱硫设备之间的连接烟道上,换热管束装在烟道壳体内部,烟气从壳侧通过换热装置,一二次冷风从管侧通过换热装置,一次风通过一次风机加压后通过一次冷风道进入换热管束加热,加热后的热风通过一次热风道进入空预器;二次风通过二次风机加压后通过二次冷风道进入换热管束加热,加热后的热风通过二次热风道进入空预器,一二次风通过换热管束换热从而加热,降低了排烟损失。

Claims (1)

1.一种用于回收低温烟气热量的装置的回收热量方法,其特征是:所述的用于回收低温烟气热量的装置组成包括烟道壳体,所述的烟道壳体两侧分别具有左管板和右管板,所述的左管板和所述的右管板之间安装有换热管束,一次冷风道通过所述的右管板与所述的换热管束连接,所述的换热管束通过所述的左管板与一次热风道连接,所述的一次热风道的同侧下方安装有二次冷风道,所述的二次冷风道通过所述的左管板与所述的换热管束连接,所述的换热管束通过所述的右管板与二次热风道连接,所述的烟道壳体内一次风系统布置在上侧,二次风系统布置在下侧;
将烟道壳体安装在引风机和脱硫设备之间的连接烟道上,布置在引风机之后,避免了因烟温降低对下游设备的低温腐蚀,换热管束装在烟道壳体内部,烟气从壳侧通过换热装置,一二次冷风从管侧通过换热装置,一次风通过一次风机加压后通过一次冷风道进入换热管束加热,加热后的热风通过一次热风道进入空预器;二次风通过二次风机加压后通过二次冷风道进入换热管束加热,加热后的热风通过二次热风道进入空预器,一二次风通过换热管束换热从而加热,降低了排烟损失。
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