Regarding the issues of ramming and the coal blending ratio for top coke
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1. According to relevant materials on ramming and top coking: The main purpose of using ramming coking is to make more use of coal with high volatility or low caking property； But based on the actual data available: for the coal used in ramming, coking coal accounts for over 70%, lean coking coal makes up around 20%, gas-rich coal constitutes 15%, and high-sulfur rich coal accounts for about 5%. Moreover, the purchase prices of these coals are more or less the same, which confuses me a bit. The main advantage of ramming and top coking is that more bituminous coal can be used, but why are the actual results different? ? What are the differences between 1/3 coking coal and lean coking coal? Are they the same concept as coking coal? 2. Can the current coal-based methanol production facility be converted to a gas-based methanol production facility? How many tons of coal are needed to produce one ton of methanol from coal? What type of coal is required, and what is its price? How many cubic meters of gas are required to produce one ton of methanol from gas, and what is the price? I would appreciate your advice! ! ! Thank you
1.1/3 coking coal is a transitional coal type situated between fat coal and gas coal; its volatile matter content ranges from 28 to 37, G is greater than 65, and Y is greater than 25. Gas coal has a volatile matter content greater than 37, G greater than 35, and Y less than 25； The volatile matter content of fat coal ranges from 10 to 37, with G greater than 85 and Y greater than 25 ； The volatiles content of lean coal ranges from 10 to 20, while G is between 50 and 65. Currently, about one-third of the coking coal is of a gas-rich type; those that are fat-rich are sold as coking coal of lower quality. Therefore, a larger amount of this coal is used in ramming coking. 2、The different process flows for methanol production from coal and coke oven gas result in different equipment selections; therefore, it is not advisable to modify the gas handling units blindly. The design for producing methanol from coke oven gas is 2,200 cubic meters of gas per ton of methanol. Data on coal-to-methanol is not available for now.