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In-bed solids control valve with improved reliability

一种固体、内热的技术，应用在非机械阀,调节固体运动的阀,CFB反应器装置领域，能够解决干扰等问题

Inactive Publication Date: 2016-08-17
THE BABCOCK & WILCOX CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This may interfere with the control of solids flow from the BFB into the CFB via the valve, which relies at least in part on controlling fluidization

Method used

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  • In-bed solids control valve with improved reliability
  • In-bed solids control valve with improved reliability
  • In-bed solids control valve with improved reliability

Examples

Experimental program
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Embodiment Construction

[0029] A more complete understanding of the processes and apparatuses disclosed herein can be had by reference to the accompanying drawings. These drawings are merely schematic illustrations based on convenience and ease of illustrating the prior art and / or the present invention, and thus are not intended to indicate relative sizes and dimensions of parts or components thereof.

[0030] Although specific terms are used in the following description for the sake of clarity, these terms are intended to refer only to specific structures of the embodiments selected to illustrate in the figures, and are not intended to define or limit the scope of the present disclosure. In the drawings and the following description, it should be understood that like reference numerals designate components having like functions.

[0031] The modifier "about" used in connection with a quantity is inclusive of the stated value and has the meaning dictated by the context (eg, it includes at least the d...

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PUM

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Abstract

A non-mechanical valve arrangement for use with a circulating fluidized bed (CFB) having a CFB reaction chamber and a bubbling fluidized bed (BFB) within an enclosure in a lower portion of the CFB reaction chamber, the BFB containing in-bed heat exchange tor (IBHX). The flow of solids from the BFB enclosure to the CFB reaction chamber can be controlled by one or more non-mechanical valves. Each non-mechanical valve is independently controlled by an independently controlled fluidization device. The non-mechanical valve has a collector to collect solids that sift back into the fluidization device of the valve. Remove clumps that may be clogging the valve. Channel walls parallel to the direction of solids flow through the valve opening may be arranged to reduce external interference with localized fluidization to maintain proper function of the non-mechanical valve.

Description

Background technique [0001] The present invention relates generally to the field of circulating fluidized bed (CFB) reactors and boilers, such as those used in power generation facilities and industrial facilities. The invention particularly relates to CFB reactor installations comprising both a CFB and one or more bubbling fluidized beds (BFBs) which feed material into the lower portion of the CFB reactor enclosure, and the invention relates to Non-mechanical valve used to control the flow of solids between the slow bubbling bed zone and the highly fluidized CFB zone. [0002] Reactors and boilers can use CFBs and BFBs together in a variety of arrangements. For example, US Patent No. 5,533,471 teaches placing a slow moving BFB below and beside the bottom of a faster moving CFB chamber. In US Patent No. 5,526,775, the slow BFB is located above and beside the fast CFB. US Patent No. 5,190,451 to Goldbach shows a CFB chamber that immerses a heat exchanger in a fluidized bed a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J8/24
CPCF23C10/04F23C10/10F23C10/26F23C10/30F23C2206/102F23C2206/103F23C2900/10008F22B31/0038B01J8/24
Inventor M·玛亚切克D·L·克拉夫特K·C·亚历山大T·J·弗林S·胡
Owner THE BABCOCK & WILCOX CO
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