Flue gas desulfuring method and its device for density current fluidised bed

A technology of fluidized bed and fluidized bed reactor, which is applied in chemical instruments and methods, separation methods, dispersed particle separation, etc., can solve problems such as system complexity and increased operating costs, and achieve simple maintenance, reduced operating costs, The effect of simple installation
CN1391979AInactive Publication Date: 2003-01-22UNIV OF SCI & TECH BEIJING
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
UNIV OF SCI & TECH BEIJING
Publication Date
2003-01-22
Estimated Expiration
Not applicable · inactive patent

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Abstract

The present invention relates to the desulfurizing of gas containing sulfur oxide exhausted in industrial process and aims at providing flue gas desulfurizing device with low cost, simple structure and easy maintenance. Sulfur containing flue gas is made to enter to the fluidized reactor from bottom, desulfurizing slurry is made to enter to the reactor from the top, and flue gas is forced to pass through large particle coagulating area comprising large particle bed material and calcium hydroxide and the suspension area comprising calcium hydroxide particle, so that desulfurizing agent and SO2 can contact in sufficient time and space for full chemical reaction. The present invention has high desulfurizing efficiency and high desulfurizing agent utilization.
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Description

Technical field:

[0001] The invention relates to the field of desulfurization of gas containing sulfur oxide compounds in industrial process discharge gas. Background technique:

[0002] The circulating fluidized bed is an important reaction device in the chemical industry, power, building materials and other industries. It was used for flue gas desulfurization in the 1980s. Although the circulating fluidized bed flue gas desulfurization system developed at home and abroad has undergone various improvements, it has not deviated from the original technical concept, that is, the circulating fluidized bed is used as the reactor, and the system requires water pumps, air compressors, Lime slurry pump, desulfurization agent injection mechanism, cyclone separator, fly ash return mechanism, not only the system is still very complicated, but the performance of the lime slurry nozzle used has a great influence on the desulfurization effect, directly affecting the mixing of desulfuriza...

Claims

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