Methods and apparatus for combustion in high volatiles environments

    公开(公告)号:US06544029B2

    公开(公告)日:2003-04-08

    申请号:US09955719

    申请日:2001-09-19

    IPC分类号: F23C500

    摘要: Methods and apparatus for combusting a fuel with an oxidant are described, the apparatus comprising a ceramic burner block, the burner block having a back face and a front face. The burner block has at least one oxidant cavity in an upper portion of the burner block, and at least one fuel cavity in a lower portion of the burner block, each cavity extending from the back face to the front face. The at least one oxidant cavity has positioned therein a fuel supply conduit, the fuel supply conduit having a fuel supply conduit exit positioned a sufficient distance from the front face to allow combustion of at least a portion of fuel exiting the fuel supply conduit exit with at least some of the oxidant traversing the oxidant cavity, and the least one fuel cavity having connected thereto, near the back face, an oxidant conduit, thereby allowing mixing of a minor portion of the oxidant with the fuel.

    Oxidant-driven dust recycling process and device for rotary kilns
    3.
    发明授权
    Oxidant-driven dust recycling process and device for rotary kilns 失效
    氧化剂驱动的粉尘回收过程和回转窑设备

    公开(公告)号:US06241514B1

    公开(公告)日:2001-06-05

    申请号:US09397002

    申请日:1999-09-15

    IPC分类号: F27B736

    CPC分类号: F27B7/362 F27B2007/3217

    摘要: A kiln adapted to recycle kiln dust includes a recycle dust pipe in fluid communication with an oxidant stream to increase the concentration of oxygen in the fluidized recycle dust before the recycle dust stream is directed into the kiln flame. Increasing the oxygen concentration in the recycle dust stream improves the efficiency of the recycling process. A supplemental fuel stream may be introduced into the recycle dust stream to provide an additional flame to preheat the recycle dust stream before the recycle dust stream is directed into the kiln flame.

    摘要翻译: 适于回收窑灰的窑炉包括与氧化剂流体流体连通的再循环粉尘管道,以在再循环粉尘流被引入窑火焰之前增加流化循环灰尘中的氧浓度。 提高循环粉尘流中的氧浓度提高了回收过程的效率。 可以将补充的燃料流引入再循环粉尘流中,以在再循环粉尘流被引入窑火焰之前提供额外的火焰以预热再循环粉尘流。

    Prefferential oxygen firing system for counter-current mineral calcining
    4.
    发明授权
    Prefferential oxygen firing system for counter-current mineral calcining 失效
    用于逆流矿物煅烧的预烧氧发射系统

    公开(公告)号:US6077072A

    公开(公告)日:2000-06-20

    申请号:US156753

    申请日:1998-09-18

    摘要: Superior heat transfer in a kiln is achieved by the use of at least one injector which injects both an oxidant, preferably containing oxygen, and a secondary fuel into the kiln. The injectors are provided so that the energy resulting from the combustion of the different fuels in the kiln heats specified regions of the kiln, without causing hot spots on the refractory walls. A firing scheme is described for the oxygen and fuels which allows an increase in the amount of heat released toward the load, resulting in significant increases in kiln efficiency and production. Low quality fuels may be used, as well as using and/or recycling more insufflated dust, without an adverse effect on the main flame.

    摘要翻译: 通过使用将氧化剂(优选含有氧气)和二次燃料注入窑内的至少一个喷射器来实现窑炉中的优异传热。 注射器被设置成使得由窑内的不同燃料的燃烧产生的能量加热窑的特定区域,而不会在耐火壁上产生热点。 描述了用于氧气和燃料的燃烧方案,其允许增加朝向负载释放的热量,导致窑炉效率和生产的显着增加。 可以使用低质量的燃料,以及使用和/或回收更多的吹灰尘,而不会对主火焰产生不利影响。

    Integrated air separation process
    8.
    发明授权
    Integrated air separation process 有权
    综合空分过程

    公开(公告)号:US06282901B1

    公开(公告)日:2001-09-04

    申请号:US09619348

    申请日:2000-07-19

    IPC分类号: F01K2506

    摘要: An integrated air separation process produces an O2-enriched gas stream and an N2-enriched gas stream in an air separation unit. The N2-enriched gas stream is heated in a first heat exchanger associated with a first boiler and then power is generated from the heated gas stream. The O2-enriched gas stream is introduced with fuel to a combustor associated with the first boiler, producing flue gas. At least a portion of the flue gas exiting the first boiler is used to generate power. In a preferred embodiment, another portion of the flue gas exiting the first boiler is recycled to the first boiler, as a temperature controlling fluid.

    摘要翻译: 整合的空气分离方法在空气分离单元中产生富O2气流和富N2气流。 在与第一锅炉相关联的第一热交换器中加热富N2气流,然后从加热的气流产生功率。 将富O2的气流引入燃料到与第一锅炉相关联的燃烧器,产生烟道气。 离开第一锅炉的烟道气的至少一部分被用于发电。 在优选实施例中,离开第一锅炉的烟道气的另一部分作为温度控制流体再循环到第一锅炉。

    Oxidant control in co-generation installations
    9.
    发明授权
    Oxidant control in co-generation installations 失效
    联合发电装置中的氧化剂控制

    公开(公告)号:US06247315B1

    公开(公告)日:2001-06-19

    申请号:US09520486

    申请日:2000-03-08

    IPC分类号: F01K2510

    摘要: This invention is related to so-called combined cycle co-generation installations, and it addresses present concerns of the industry. Among these, combustion stability, corrosion (due to large water content in the flue gases), large heat transfer areas, and the like. In some embodiments, an additional heat exchanger is added to heat combustion air with a portion of the exhaust gases resulting from an engine, preferably a gas turbine. As a result, the efficiency of the cycle will improve, the oxidant will be enriched by above 50% oxygen, the combustion process will be enhanced, and the dimensions of the boiler may be reduced. It is considered that the combustion air will require between 10% and 80% of the total flue gas volume, more preferably between 20% and 40%. This is the portion of the flue gases sent through the heat exchanger. A control system designed to optimize the flow of the different streams is also presented. Other inventive embodiments forego heat exchanges in lieu of precise control of two flows of exhaust gas, with preferred addition of additional oxidant to the boiler bumers.

    摘要翻译: 本发明涉及所谓的联合循环联合发电装置,并且涉及业界目前的关注。 其中,燃烧稳定性,腐蚀(由于烟气中的水分含量大),传热面积大等。 在一些实施例中,添加另外的热交换器以加热燃烧空气与一部分由发动机,优选燃气轮机产生的废气。 结果,循环的效率将提高,氧化剂将被氧气氧化50%以上,燃烧过程将得到增强,锅炉的尺寸可能会降低。 据认为,燃烧空气将需要总烟道气体积的10%至80%,更优选在20%至40%之间。 这是通过热交换器送出的烟气的一部分。 还提出了一种旨在优化不同流的流量的控制系统。 其他发明实施例放弃热交换以代替对两种废气流的精确控制,优选地向锅炉保险器添加额外的氧化剂。

    System and method for oxidant injection in rotary kilns
    10.
    发明授权
    System and method for oxidant injection in rotary kilns 失效
    回转窑氧化剂注入系统和方法

    公开(公告)号:US6116896A

    公开(公告)日:2000-09-12

    申请号:US397021

    申请日:1999-09-15

    摘要: A system and method for increasing the amount of oxygen in a kiln chamber is disclosed. The radial surface of a rotatable kiln is provided with at least one oxidant injection port extending through the radial surface into the kiln chamber. A cam is connected to the radial surface adjacent the oxidant injection port. A valve assembly including a valve chamber in fluid communication with an oxidant supply is mounted adjacent the kiln substantially in fixed spatial relation with the rotatable kiln body. The valve assembly includes a follower member adapted to contact a surface to the cam to actuate the valve assembly. Rotation of the kiln body brings the cam into contact with the follower member, thereby actuating the oxidant injection assembly, and injecting oxidant through the injection port into the kiln chamber.

    摘要翻译: 公开了一种用于增加窑室中的氧气量的系统和方法。 可旋转窑的径向表面设置有至少一个氧化剂注入口,其延伸穿过径向表面进入窑室。 凸轮连接到与氧化剂注入口相邻的径向表面。 包括与氧化剂源流体连通的阀室的阀组件基本上与可旋转窑体保持固定的空间关系安装在窑附近。 阀组件包括适于将表面接触到凸轮以致动阀组件的从动构件。 窑体的旋转使凸轮与从动构件接触,从而致动氧化剂注入组件,并通过注入口将氧化剂注入窑室。