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A method of producing SO2 sorbent that is suitable for use to desulfurize combustion gases

A technology of burning gas and production methods, which is applied in the direction of lime production, separation methods, chemical instruments and methods, etc., and can solve problems such as uncontrollable lime quantity

Inactive Publication Date: 2001-06-20
ABB ALSTOM POWER INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Another limiting factor is the inability to control the amount of lime entrained in the fly ash, such as the amount of lime produced by the roasting of injected limestone and the amount of lime required to achieve the desired properties using dry scrubbing techniques

Method used

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  • A method of producing SO2 sorbent that is suitable for use to desulfurize combustion gases
  • A method of producing SO2 sorbent that is suitable for use to desulfurize combustion gases

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Embodiment Construction

[0042] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

[0043] see figure 1 , shows a conventional solid fuel steam generator, generally designated by numeral 10. Since the structure and mode of operation of conventional solid fuel steam generators are known to those skilled in the art, no figure 1 The illustrated conventional solid fuel steam generator 10 is described in detail. However, for a better understanding of the conventional solid fuel steam generator 10, it can be used to implement the present invention to produce SO suitable for combustion gas desulfurization 2 For the absorbent, it suffices to describe in detail the components of the above-described solid fuel steam generator 10 of the present invention. For a detailed description of the structure and mode of operation of a conventional solid fuel steam generator 10, reference may be made to prior art US4719587, issued to F.J. Berte on January 12, 1988 and assigned to the same assignee as the present applicat...

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Abstract

A method of producing SO2 sorbent that is suitable for use to effect therewith the desulfurization of combustion gases wherein the SO2 sorbent that is produced from the use of the present invention is limestone particles that have been injected into the burner region (12) of a conventional solid fuel-fired steam generator (10) and that have been subjected to 'deadburning' therein thereby creating unreactive lime particles therefrom.

Description

Background of the invention [0001] The present invention relates to a kind of SO 2 Absorbents, and more particularly to a type of SO suitable for desulfurization of combustion gases 2 Absorbent production methods. [0002] Sulfur exists in coal in two forms: organic and inorganic. Inorganic compound pyrite or FeS 2 It exists in the fuel in the form of discrete particles, generally accounting for 20-50% of the total sulfur. Grinding and classifying operations (using pulverizers) associated with pulverized fuel steam generators remove most of the sulfur present as pyrite from the coal. The remainder of the inorganic sulfur remains in solid form in the bottom and fly ash leaving the pulverized fuel steam generator. [0003] Organic sulfur contained in the molecular structure of coal is oxidized during combustion and is discharged from the pulverized fuel steam generator in the form of sulfur oxide gas. The main oxidation reaction leads to the formation of sulfur dioxide SO ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/50C04B2/10
CPCC04B2/10B01D53/508Y02P40/40
Inventor 小·H·E·安德鲁斯M·S·麦卡特尼
Owner ABB ALSTOM POWER INC
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