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Efficient sulfur-fixing agent and its usage

A sulfur-fixing, high-efficiency technology, applied in solid fuels, fuel additives, petroleum industry, etc., can solve the problems of high cost promotion and application, and achieve the effects of thorough pollution control, less investment, and improved combustion efficiency

Inactive Publication Date: 2007-11-21
陈钧
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Regardless of whether the multifunctional additive is used in industry or how it is applied, its promotion and application will be restricted due to the difficulty in finding its source of goods (such as slag from smelting rare metals, magnesium slag, nickel slag, etc.) and the high cost.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0043] The sulfur-fixing agent of the present invention consists of: the waste material of limestone used in cement plants—marl, the content of calcium oxide CaO is between (35-44)%; fluorite (made of calcium fluoride CaF 2 Depends on the content of calcium chloride) and waste residue containing calcium chloride discharged from chemical plants such as salt mud (composed of calcium chloride CaCl 2 content depends).

[0044] This sulfur fixing agent is made of marl as the main material, adding a very small amount of fluorite powder and waste residue containing calcium chloride discharged from chemical plants, such as salt mud. Marl contains not only calcium oxide components needed for cement clinker, but also siliceous components and flux minerals such as aluminum-iron oxides, while calcium oxide CaO and ferric oxide Fe 2 o 3 , Al 2 o 3 , SiO2 2 Oxides such as magnesium oxide and MgO are the important components needed for sulfur fixation. Break the marl to the particle si...

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Abstract

An efficient sulfur-curing agent and its use are disclosed. It relates to circulation fluidized bed boiler combustion, solid sulfur and ash slag modification. The process is carried out by combusting for efficient sulfur-curing agent and coal to generate hydraulic gel material. The sulfur-curing agent consists of chalky clay, which comprises calcium oxide 35-44%, mineral agent with cand powder and / or calcium chloride fag end, the can powder contains calcium fluoride 40-60%, the calcium chloride fag end contains calcium chloride 30-40%. It's simple, efficient and convenient and has no environmental pollution. It has higher combustion heat utilization rate.

Description

technical field [0001] The present invention relates to the technology of improving the thermal efficiency of coal combustion in the combustion process of circulating fluidized bed boilers, and capable of efficiently fixing sulfur and modifying the combustion residues into useful hydraulic cementitious materials in the furnace while burning and fixing sulfur field. In particular, it relates to a sulfur-fixing agent capable of high-efficiency sulfur-fixing of coal in the combustion of a circulating fluidized bed boiler and a combustion residue modified into a hydraulic cementitious material in the furnace and its application method. Background technique [0002] Coal is the main energy source in our country, and its consumption is increasing with the development of economy. During the combustion of coal, a large amount of sulfur dioxide SO is produced 2 , cause serious pollution to the environment, and cause serious harm to the survival of human beings and creatures. In re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10L10/04C10L9/10
Inventor 陈钧
Owner 陈钧
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