Deep compounding sulphur-fixing agent applicable to low sulfur content barbecue coal

Abstract

The invention provides a deep compounding sulphur-fixing agent applicable to low sulfur content barbecue coal, wherein the deep compounding sulphur-fixing agent is prepared from, by weight, 80-90 parts of calcium-based basic aggregate agent, 3-7 parts of salt additive, 3-5 parts of metal oxide additive, and 2-5 parts of reaction catalyst, wherein the calcium-based basic aggregate agent comprises calcium oxide, calcium hydroxide and calcium carbonate; the salt additive comprises potassium carbonate, sodium carbonate and sodium chloride; the metal oxide additive comprises aluminium oxide, iron trioxide and magnesium oxide; the reaction catalyst comprises potassium chlorate and ethylene glycol monoethyl ether. The compound sulphur-fixing agent realizes the in-depth sulphur fixing of the coal when the barbecue coal is prepared by the low sulphur coal type, effectively solves the problem of odor generation easily during the combustion of the barbecue coal; the components are simple and easy to acquire, low in cost, and suitable for industrial production.

Description

technical field [0001] The invention belongs to the technical field of coal cleaning, and relates to a deep composite sulfur-fixing agent suitable for low-sulfur separate roasting coal, which can achieve the purpose of removing peculiar smell and clean utilization during coal combustion. Background technique [0002] Barbecue coal is prepared from coal with low sulfur content. Although the sulfur content is low, it will inevitably release a certain amount of toxic and harmful gases such as sulfur dioxide and hydrogen sulfide during the combustion process. If measured by industrial use, it is indeed It reaches the industrial index, but in terms of food safety, it causes the food processed with barbecue coal to have a relatively large odor and is toxic. Therefore, a sulfur fixation scheme for low-sulfur barbecue coal should be proposed to reduce the release of toxic and harmful gases such as sulfur dioxide and hydrogen sulfide as much as possible during the combustion of barbe...

AI Technical Summary

Problems solved by technology

However, this type of composite sulfur fixation agent does not consider the high temperature secondary decomposition of calcium sulfate generated by the reaction of desulfurization components and sulfur, resulting in poor sulfur fixation effect in the high temperature section. It is still difficult to meet the requirements of deep sulfur fixation for low-sulfur barbecue coal after experimental verification

[0005] It can be said that the higher the sulfur content of the coal, the better the sulfur fixation effect can be achieved regardless of the use of calcium-based sulfur fixative or composite sulfur fixer, but for the barbecue coal prepared from low-sulfur coal, the existing solid Sulfur agents have been verified to be difficult to meet the requirements of deep sulfur fixation, and it is difficult to avoid the precipitation of a small amount of sulfur-containing gas during the combustion of low-sulfur barbecue coal, resulting in serious odor of barbecued food and difficult to guarantee food safety