用于粉状固体燃料炉的过热空气控制系统

    公开(公告)号:CN1111676C

    公开(公告)日:2003-06-18

    申请号:CN97113278.X

    申请日:1997-04-17

    Abstract: 一种粉状燃料炉的过热空气控制系统,其中,对一次风和二次风的排放进行控制,以实现不完全燃烧,并设置一个过热空气口,辅助空气通过该口排出,以完成燃烧。过热空气口接收两股气流,一股容量高,流速低,另一股容量低,流速高。设置风门,以便控制气流,使空气的量和速度达到最佳化。这样就降低了一氧化二氮的形成量并可相当精确地维持空气燃料比,尽管燃料的品质、压力和一次风的量都不相同。

    PROCESS AND APPARATUS FOR MAKING A MINERAL MELT
    95.
    发明申请
    PROCESS AND APPARATUS FOR MAKING A MINERAL MELT 审中-公开
    制造矿物熔体的工艺和装置

    公开(公告)号:WO2016092100A1

    公开(公告)日:2016-06-16

    申请号:PCT/EP2015/079493

    申请日:2015-12-11

    Abstract: The invention relates to a method of making a mineral melt, the method comprising providing a circulating combustion chamber which comprises an upper zone, a lower zone and a base zone, injecting primary particulate fuel and particulate mineral material and primary combustion gas into the upper zone of the circulating combustion chamber, thereby at least partially combusting the primary particulate fuel and thereby melting the particulate mineral material to form a mineral melt and generating exhaust gases, injecting into the lower zone of the circulating combustion chamber, through at least one first burner, secondary combustion gas and gaseous fuel and secondary particulate fuel, wherein the secondary combustion gas and gaseous fuel and secondary particulate fuel are injected via a single first burner, wherein the amount of secondary combustion gas injected via each first burner is insufficient for stoichiometric combustion of the total amount of gaseous fuel and secondary particulate fuel injected via that first burner, and injecting tertiary combustion gas into the lower zone of the circulating combustion chamber, through at least one tertiary combustion gas injector, whereby the tertiary combustion gas enables completion of the combustion of the gaseous fuel and the secondary particulate fuel, separating the mineral melt from the hot exhaust gases so that the hot exhaust gases pass through an outlet in the circulating combustion chamber and the mineral melt collects in the base zone. The invention also relates to apparatus suitable for use in the method.

    Abstract translation: 本发明涉及一种制备矿物熔体的方法,所述方法包括提供循环燃烧室,该循环燃烧室包括上部区域,下部区域和底部区域,将初级颗粒燃料和颗粒状矿物材料和初级燃烧气体注入上部区域 从而至少部分地燃烧初级颗粒燃料,从而熔化颗粒矿物材料以形成矿物熔体并产生废气,通过至少一个第一燃烧器喷射到循环燃烧室的下部区域中, 二次燃烧气体和气体燃料和二次颗粒燃料,其中二次燃烧气体和气体燃料和二次颗粒燃料通过单个第一燃烧器喷射,其中通过每个第一燃烧器喷射的二次燃烧气体的量不足以使 气体燃料和次要颗粒的总量 通过所述第一燃烧器喷射的燃料,以及通过至少一个三次燃烧气体喷射器将三次燃烧气体注入所述循环燃烧室的下部区域,由此所述三次燃烧气体能够完成所述气态燃料和所述二次颗粒的燃烧 燃料,将矿物熔体与热废气分离,使得热废气通过循环燃烧室中的出口,并且矿物熔体收集在基区中。 本发明还涉及适用于该方法的装置。

    HEATER AND METHOD OF OPERATION
    97.
    发明申请
    HEATER AND METHOD OF OPERATION 审中-公开
    加热器和操作方法

    公开(公告)号:WO2008143912A8

    公开(公告)日:2009-06-11

    申请号:PCT/US2008006201

    申请日:2008-05-15

    CPC classification number: F23C6/047 C10G9/206 C10G2400/20 F23C2201/101

    Abstract: A furnace (10), firing pattern and method of operating a heater that employs a combination of hearth burners (46) and wall burners (56) for the cracking of hydrocarbons is described. The firing pattern leads to improvements in the uniformity of the coil metal (26) temperatures and vertical heat flux profiles over the firebox elevation. The hearth burners (46) operate with a stoichiometric excess of air while the wall burners (56) operate with less than the stoichiometric amount of air.

    Abstract translation: 描述了炉(10),焙烧图案和操作使用炉底燃烧器(46)和壁燃烧器(56)的组合的加热器的方法来开裂烃。 触发模式导致线圈金属(26)的温度和火炉高度上的垂直热通量分布的均匀性的改善。 炉膛燃烧器(46)以化学计量过量的空气操作,而壁式燃烧器(56)以小于化学计量的空气操作。

    HEATER AND METHOD OF OPERATION
    98.
    发明申请
    HEATER AND METHOD OF OPERATION 审中-公开
    加热器和操作方法

    公开(公告)号:WO2008143912A3

    公开(公告)日:2009-04-30

    申请号:PCT/US2008006201

    申请日:2008-05-15

    CPC classification number: F23C6/047 C10G9/206 C10G2400/20 F23C2201/101

    Abstract: A furnace (10), firing pattern and method of operating a heater that employs a combination of hearth burners (46) and wall burners (56) for the cracking of hydrocarbons is described. The firing pattern leads to improvements in the uniformity of the coil metal (26) temperatures and vertical heat flux profiles over the firebox elevation. The hearth burners (46) operate with a stoichiometric excess of air while the wall burners (56) operate with less than the stoichiometric amount of air.

    Abstract translation: 描述了一种炉(10),焙烧图案和操作加热器的方法,该加热器采用炉膛燃烧器(46)和壁式燃烧器(56)的组合来裂化碳氢化合物。 点火模式导致线圈金属(26)温度的均匀性和火焰箱高度上的垂直热通量分布的改善。 炉膛燃烧器(46)以化学计量过量的空气运行,而壁式燃烧器(56)以低于化学计量的空气量运行。

    IMPROVED ADVANCED REBURNING METHODS FOR HIGH EFFICIENCY NOx CONTROL
    100.
    发明申请
    IMPROVED ADVANCED REBURNING METHODS FOR HIGH EFFICIENCY NOx CONTROL 审中-公开
    改进高效NOx控制的先进方法

    公开(公告)号:WO1997025134A1

    公开(公告)日:1997-07-17

    申请号:PCT/US1997000045

    申请日:1997-01-08

    Abstract: The present invention is related to methods and systems for preventing the release of nitrogen oxides with combustion flue gases emitted to the atmosphere. The invention is specifically directed to the removal of nitric oxide, nitrogen dioxide, and nitrous oxide from flue gas in stationary combustion systems. The methods of the invention improve efficiency of conventional reburning and advanced reburning processes by two key improvements, including the injection of a reducing agent into the reburning zone (16) and the use of promoters, which considerably enhance NOx control. The promoters are metal-containing compounds that can be added to the reducing agents. These improvements allow either one or two stages of reducing agent injection for greater NOx control (50).

    Abstract translation: 本发明涉及用于防止排放到大气中的燃烧烟道气释放氮氧化物的方法和系统。 本发明特别涉及在固定燃烧系统中从烟道气中去除一氧化氮,二氧化氮和一氧化二氮。 本发明的方法通过两个关键的改进提高了传统再燃烧和高级再燃烧过程的效率,包括将还原剂注入再燃烧区(16)和使用促进剂,这显着地增强了NOx控制。 促进剂是可以添加到还原剂中的含金属化合物。 这些改进允许一个或两个阶段的还原剂注入用于更大的NOx控制(50)。

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