fe-ti-tb ternary compound coal-saving sulfur-fixing and decoking additive and its preparation method and application

A fe-ti-tb, 1. fe-ti-tb technology, applied in fuel additives, chemical instruments and methods, solid fuels, etc., can solve the problems of unsatisfactory results, low coal burnout rate, and low combustion efficiency, etc. problems, to achieve the effect of improving combustion efficiency, simple material selection, and increasing sensible heat

Active Publication Date: 2020-07-28
广州市芬芳环保科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, most of the coal-saving agents sold on the market are traditional combustion-supporting coal-saving agents, which have certain effects on coal-fired occasions with low combustion efficiency and low coal burnout rate. Therefore, it is of great social and economic value to study new multifunctional composite coal-saving additives.

Method used

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  • fe-ti-tb ternary compound coal-saving sulfur-fixing and decoking additive and its preparation method and application
  • fe-ti-tb ternary compound coal-saving sulfur-fixing and decoking additive and its preparation method and application

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Embodiment 1

[0020] The preparation method of Fe-Ti-Tb ternary compound coal-saving sulfur-fixing and decoking additive comprises the following steps: first, the preparation concentration is 2mol / L FeCl 2 Ethanol solution 1L, then add 1mol tetra-n-butyl titanate (TNB), then slowly add 0.1mol / L TbCl 3 100ml of ethanol solution, after mixing evenly, drop 1L of NaOH ethanol solution with a concentration of 10mol / L at a rate of 30ml / min, after aging for 24h, drop in 0.67mol of hydrogen peroxide under the protection of nitrogen atmosphere, and keep warm at 60-70°C After 1 hour, a magnet was used to separate the precipitate, and after vacuum drying at 75°C and vacuum calcination at 500°C, the powder material obtained was the Fe-Ti-Tb ternary composite coal-saving sulfur-fixing and decoking additive.

[0021] The prepared Fe-Ti-Tb ternary composite coal-saving sulfur-fixing and decoking additive was added to the coal-water slurry experimental furnace for testing, and its energy-saving and emissio...

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Abstract

The invention relates to a preparation method of a Fe-Ti-Te three-element compound type coal-saving, sulfur-fixing and decoking additive and belongs to the technical field of fire coal additives. The preparation method comprises the following steps: (1) a FeCl2 ethanol solution is prepared, tetra-n-butyl titanate is added, a terbium salt and ethanol solution is added, and the mixture is mixed uniformly; (2) alkali liquor is added, and the mixture is aged for 24 h or longer; (3) stoichiometric hydrogen peroxide is dropwise added under the protection of nitrogen atmosphere, and the mixture is kept at the constant temperature of 60-70 DEG C for 1 h or longer; (4) precipitants are separated out through a magnet; (5) the Fe-Ti-Te three-element compound type coal-saving, sulfur-fixing and decoking additive is prepared after vacuum drying and vacuum calcination. Materials are easy to obtain, manufacturing is convenient, and the additive has the comprehensive performance including energy saving, sulfur fixation, emission reduction, coking prevention and decoking.

Description

technical field [0001] The present invention relates to coal-fired additive technology, specifically, to the preparation method of Fe-Ti-Tb ternary compound coal-saving sulfur-fixing and decoking additive, and to the Fe-Ti-Tb ternary compound The coal-saving sulfur-fixing and coking-removing additive also relates to the application of Fe-Ti-Tb ternary compound coal-saving sulfur-fixing and coking-removing additive. Background technique [0002] In recent years, the price of coal has been rising continuously. Affected by the country's further increase in emission requirements for coal-fired enterprises and other factors, energy conservation and emission reduction have become the top priority of current enterprises. As far as the current energy-saving and emission-reduction measures of coal-fired enterprises are concerned, conventional means of improving equipment and recovering waste heat are constrained by capital investment and margins for equipment improvement, and the eff...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/12B01J23/70C10L9/10
CPCC10L9/10C10L10/00C10L10/04C10L2230/08C10L2290/141
Inventor 胡大为
Owner 广州市芬芳环保科技有限公司
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