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Cooled tubes arranged to form impact type particle separators

A technology for separators and cooling pipes, which is applied in the field of improved impact particle separator structure, and can solve problems such as increasing costs

Inactive Publication Date: 2007-08-22
THE BABCOCK & WILCOX CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Protection can be done with tube shrouds made of stainless steel or ceramic, which in turn have to be used along the entire height of the collector, further adding to the cost

Method used

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  • Cooled tubes arranged to form impact type particle separators
  • Cooled tubes arranged to form impact type particle separators
  • Cooled tubes arranged to form impact type particle separators

Examples

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Embodiment Construction

[0067] The term "CFB boiler" as used herein refers to a CFB reactor or combustion chamber in which the combustion process can take place. Although the present invention specifically refers to boilers or steam generators using a CFB combustor as the means of generating heat, it is to be understood that the present invention could readily be used in a different CFB reactor as well. For example, the present invention may be applied in reactors for chemical reactions other than those used for combustion processes, or for supplying gas / solid particle mixtures produced by combustion processes elsewhere into reactors for further A reactor for the treatment of, or for, a reactor that provides only an enclosure in which particles or solid particles are entrained in a gas that is not necessarily a by-product of the combustion process. Similarly, the term "U-beam" is used in the following discussion for ease of description and is used broadly to refer to any type of concave impact member...

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Abstract

Apparatus for separating solids from flue gas in a circulating fluidized bed (CFB) boiler comprises plural vertical, impact type particle separators made of cooling tubes located within the CFB in a plurality of staggered rows. One embodiment employs a plurality of stacked, slip fit elements having apertures which accept the cooling tubes. The slip fit elements cooperate with one another to form a collecting channel, typically U-shaped, which separates particles from flue gases conveyed across the particle separators. Shiplap joints in betwee n the individual slip fit elements prevent gas and solids from leaking therebetween and allow for thermal expansion. Alternatively, the impact type particle separators comprise cooling tubes connected to one another to form a unitary structure. Pin studs welded to the cooling tubes a nd covered with a coating of refractory; ceramic tiles; metal or ceramic spray coatings; metal or ceramic castings; weld overlay; and / or shields provide erosion resistance.

Description

[0001] This application is a divisional application, and its parent case is application No. 02120467.5 with an application date of May 24, 2002, and its invention title is "Cooling pipes arranged to form an impact-type particle separator". [0002] Reference entries for related applications [0003] This application is a continuation-in-part of US Application Serial No. 09 / 613,132, filed July 10, 2000, entitled "Particulate Trap Passages with Cooled Internal Elements in CFB Boilers." This application, Serial No. 09 / 613,132, is hereby incorporated by reference. Unless otherwise stated, the definitions of terms in Application Serial No. 09 / 613,132 apply equally to the disclosure herein. technical field [0004] The present invention relates generally to the field of circulating fluidized bed (CFB) boilers, and more particularly to an improved impingement-type particle separator structure composed of fluid-cooled tubes. Background technique [0005] CFB boiler systems are kno...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D45/08F23C10/08F23J15/02B01D35/18F22B31/00F22B37/48F23C10/00
CPCB01D45/08F22B31/0084F23C10/08B65D77/06B65D65/42B65D21/086
Inventor D·J·沃克S·M·卡维达斯M·马里安契克F·贝林K·C·亚历山大D·R·吉布斯D·E·詹姆斯D·L·维茨克
Owner THE BABCOCK & WILCOX CO
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