公开(公告)号：US5084256A

公开(公告)日：1992-01-28

申请号：US565869

申请日：1990-08-09

Applicant: Michael W. McElroy ,  Roderick Beittel ,  Steven J. Bortz ,  George R. Offen

Inventor： Michael W. McElroy ,  Roderick Beittel ,  Steven J. Bortz ,  George R. Offen

IPC: B01D53/50

CPC classification number: B01D53/501 ,  B01D53/508

Abstract: A method is provided for reducing the sulfur content of exhaust (flue) gas from a combustion installation manufacturing process, or chemical process comprising the step of injecting dry powder alkali hydrate sorbent directly into intermediate temperature (800.degree.-1200.degree. F.) combustion/process gases. The alkali hydrate sorbent reacts rapidly with the sulfur-containing gases in this temperature regime to produce primarily alkali sulfites. The unreacted portion of the sorbent largely remains in the form of an alkali hydrate and may react further with residual sulfur, especially in the presence of water, at lower temperatures. A novel combustion chamber is also provided having an injection means for injecting alkali hydrate sorbent into a combustion volume where the temperature is in the range of 800.degree.-1200.degree. F., to cause a predetermined reaction of the alkali hydrate sorbent with SO.sub.2 and the combustion gases to produce primarily alkali sulfites with the unreacted sorbent remaining substantially as alkali hydroxide.

Abstract translation: 提供一种降低燃烧装置制造过程中的排气（烟道）气体的硫含量的方法，或包括将干粉碱性水合物吸附剂直接注入中温（800〜1200°F）燃烧/ 工艺气体。 碱性水合物吸附剂在该温度范围内与含硫气体快速反应，主要生成碱金属亚硫酸盐。 吸附剂的未反应部分大部分保留为碱金属氢氧化物的形式，并且在较低温度下，特别是在水的存在下，可进一步与残留的硫反应。 还提供了一种新颖的燃烧室，其具有用于将碱金属水合物吸附剂注入到温度在800-1200°F范围内的燃烧体积中的注入装置，以引起碱金属水合物吸附剂与SO 2的预定反应， 燃烧气体主要产生碱性亚硫酸盐，未反应的吸附剂基本上保持为碱性氢氧化物。

公开(公告)号：US6058855A

公开(公告)日：2000-05-09

申请号：US119097

申请日：1998-07-20

Applicant: Terence Ake ,  Roderick Beittel ,  Robert A. Lisauskas ,  Eric Reicker

Inventor： Terence Ake ,  Roderick Beittel ,  Robert A. Lisauskas ,  Eric Reicker

IPC: F23C3/00 ,  F23C6/04 ,  F23C7/00 ,  F23C9/06 ,  F23D1/00 ,  F23D17/00 ,  F23L9/04 ,  F23G7/06

CPC classification number: F23L9/04 ,  F23C3/00 ,  F23C6/042 ,  F23C7/006 ,  F23C9/06 ,  F23D1/00 ,  F23D17/00 ,  F23C2201/101 ,  F23C2201/301 ,  F23D2201/20

Abstract: At least one main combustion chamber contains at least one pulverized coal burner. Each pulverized coal burner is operatively arranged for minimizing NO.sub.X production and for maintaining a predetermined operating temperature to liquefy ash within the combustion chamber. The combustion chamber includes a slag drain for removing slag from the combustion chamber. A slag screen is positioned in a generally U-shaped furnace flow pattern. The slag screen is positioned between the combustion chamber and a radiant furnace. The radiant furnace includes a reburning zone for in-furnace No.sub.X reduction. The reburning zone extends between a reburning fuel injection source and at least one overfire air injection port for injecting air.

Abstract translation: 至少一个主燃烧室包含至少一个粉煤燃烧器。 每个粉煤燃烧器可操作地布置成用于使NO x产生最小化并保持预定的操作温度以使燃烧室内的液化灰。 燃烧室包括用于从燃烧室除去渣的炉渣排出口。 炉渣筛位于大致U形炉流程图中。 炉渣筛位于燃烧室和辐射炉之间。 辐射炉包括用于炉内NoX还原的再燃烧区域。 再燃烧区域在再燃燃料喷射源和至少一个用于喷射空气的过火空气喷射端口之间延伸。