Method for producing clean coke based on water glass transition state binder

Abstract

A method for producing clean coke based on a water glass transition state binder, the method is to select kaolin, silica, limestone and coal liquefaction residue, break them separately, then add water glass powder and pregelatinized starch, and mix evenly through stirring , and then through dry grinding to obtain the alumina transition state binder; select the blended coal, and mix the blended coal and the water glass transition state binder in proportion, cold press molding, dry distillation at high temperature, and then reduce to At room temperature, clean coke can be obtained; the source of raw materials in the invention is wide and abundant, and the price is low. It acts as a bond before it acts, ensuring the molding rate and coke strength of the material in the retort furnace.

Description

technical field [0001] The invention relates to a method for producing clean coke, in particular to a method for producing clean coke by using a water glass transition state binder. Background technique [0002] In some special primary energy endowments that are rich in coal, poor in oil and little in gas, coal combustion is the main way to obtain energy, but the dust, sulfur dioxide, nitrogen oxides, etc. emitted by the direct combustion of a large amount of coal have caused serious harm to the atmospheric environment. Leading to serious air pollution and frequent occurrence of smog. For example, in 2014, China's statistics for civilian coal consumption was 160 million tons, accounting for only 3.8% of the country's coal consumption. Taking sulfur dioxide emissions as an example, the annual emissions of power plants are 200 10,000 tons, and civil scattered combustion is as high as 3.2 million tons, which is 1.6 times the total emissions of power plants. In addition, a serie...

AI Technical Summary

Problems solved by technology

The binders used in these patented coke formulations are mainly used in the cold forming process below 200°C and the hot binder in the dry distillation process above 400°C, but the actual dry distillation process There is a stage where the cold binder fails between 200-400°C and the hot binder has no effect. Due to the lack of use of transition binders in this temperature range, the coke breakage rate is high during the carbonization process.

[0006] After searching, there is no report on the water glass transition state binder used to produce clean coke

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