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Desulfurization treatment process applied to furfural residue combustion

A treatment process and furfural slag technology, which is applied in the direction of combustion product treatment, combustion type, fuel supply, etc., can solve the problems of inability to obtain desulfurization effect, complex composition, high moisture content, low exhaust temperature, strong corrosion of equipment, etc. , to achieve the effect of enhancing sulfur fixation, avoiding excessive scaling, and inhibiting decomposition

Pending Publication Date: 2022-06-21
BEIJING AOKE RUIFENG NEW ENERGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the coal-fired desulfurization treatment process cannot adapt to the characteristics of complex organic components, high moisture content, low exhaust gas temperature, and strong corrosion of equipment in the furfural slag combustion flue gas, resulting in failure to achieve good desulfurization results

Method used

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  • Desulfurization treatment process applied to furfural residue combustion

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Example 1:

[0042] Adding Ca(OH) to furfural slag fuel 2 、Ba(OH) 2 、Al 2 o 3 Composite sulfur-fixing agent constituted, the Ca(OH) in the composite sulfur-fixing agent 2 The proportion is 97.5 parts by weight, Ba(OH) 2 2.5 parts by weight, Al 2 o 3 3 parts by weight. And according to the sulfur element content detected in the furfural slag fuel sample, the addition amount of the composite sulfur-fixing agent was adjusted so that the molar ratio of Ca and S elements was 3.8. After the furfural slag and sulfur-fixing agent are fully mixed, they are ground and crushed to fine particles with a particle size of 0.1 mm, and then sent to a furfural slag combustion furnace for combustion, and the combustion temperature is controlled at 870 degrees Celsius.

[0043] For the flue gas produced by the combustion of furfural slag, dust removal is carried out by combining cyclone dust removal and filter bag dust removal.

[0044] The flue gas after dust removal is input to ...

Embodiment 2

[0048] Example 2

[0049] Adding Ca(OH) to furfural slag fuel 2 , KOH, Al 2 o 3 Composite sulfur-fixing agent constituted, the Ca(OH) in the composite sulfur-fixing agent 2 The proportion is 98.5 parts by weight, KOH1.5 parts by weight, Al 2 o 3 2 parts by weight. And according to the sulfur content detected in the furfural slag fuel sample, the amount of composite sulfur fixative was adjusted so that the molar ratio of Ca and S was 3. After the furfural slag and sulfur-fixing agent are fully mixed, they are ground and crushed to fine particles with a particle size of 0.1 mm, and then sent to a furfural slag combustion furnace for combustion, and the combustion temperature is controlled at 890 degrees Celsius.

[0050] For the flue gas produced by the combustion of furfural slag, dust removal is carried out by combining cyclone dust removal and filter bag dust removal.

[0051] The flue gas after dust removal is input to the desulfurization spraying equipment for prelim...

Embodiment 3

[0055] Example 3

[0056] Adding Ca(OH) to furfural slag fuel 2 、Na 2 CO 3 、Al 2 o 3 Composite sulfur-fixing agent constituted, the Ca(OH) in the composite sulfur-fixing agent 2 The proportion is 99 parts by weight, 1 part by weight of KOH, Al 2 o 3 2 parts by weight. And according to the sulfur content detected in the furfural slag fuel sample, the amount of composite sulfur fixative was adjusted so that the molar ratio of Ca and S was 2.5. After the furfural slag and sulfur-fixing agent are fully mixed, they are ground and crushed to fine particles with a particle size of 0.1 mm, and then sent to a furfural slag combustion furnace for combustion, and the combustion temperature is controlled at 850 degrees Celsius.

[0057] For the flue gas produced by the combustion of furfural slag, dust removal is carried out by combining cyclone dust removal and filter bag dust removal.

[0058] The flue gas after dedusting is input to the desulfurization spraying equipment for p...

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Abstract

The invention provides a desulfurization treatment process applied to furfural residue combustion. By utilizing the calcium-based composite sulfur-fixing agent, the reaction efficiency can be improved and the sulfur-fixing effect can be enhanced through a microporous structure, the additive and the decomposition inhibitor improve the thermal stability of micropores and inhibit the decomposition of sulfur-fixing solid products at high temperature, and the combustion reaction temperature is monitored and controlled in the combustion process; and sulfur-containing components in the furfural residues are retained in solid residues after combustion. By means of primary and deepened secondary desulfurization spraying and adoption of differential ph values, desulfurization reaction is optimized, higher desulfurization efficiency is obtained, the lower ph value is adopted in primary desulfurization, neutralization of acidic components in furfural residue flue gas is achieved, excessive scaling can be avoided, and the desulfurization efficiency is improved. Through the process, zero emission of the sulfur element in the furfural residue combustion flue gas is basically realized.

Description

technical field [0001] The invention relates to the technical field of biomass combustion, in particular to a desulfurization treatment process for the application of furfural slag combustion. Background technique [0002] Furfural is a widely used basic chemical raw material, which can be used to synthesize a series of important chemical products such as furfuryl alcohol, furan, furoic acid, ethyl furoate, and succinic acid. At present, furfural cannot be produced by synthesis, but by hydrolysis of biomass containing hemicellulose under the catalysis of acid. Usually, biomass materials such as corn cobs, corn stalks, and bagasse are used as raw materials for furfural production. [0003] The above biomass raw materials will leave more organic residue after furfural is prepared, which is generally called "furfural residue". Furfural slag is generally dark brown, and after drying, it is yellowish-brown soft powder with a particle size of about 1-2 mm, and its components are...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23G7/02F23J15/00F23K1/00B01D53/50B01D53/78B01D53/96
CPCF23G7/02F23J15/003F23K1/00B01D53/502B01D53/96F23J2215/20
Inventor 王志强樊峰鸣吴永铃盛谦益周冬颖
Owner BEIJING AOKE RUIFENG NEW ENERGY
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