Method for making coal fine into form coke by microwave energy

Abstract

The invention relates to a method for producing formed coke, in particular to a method for preparing coal powder into the formed coke by microwave. The method adopts coal powder as raw material and comprises the following steps: sieving the coal powder for preparing fine coal powder, sending the fine coal powder into a first microwave heating device for dehydration until the water content of the heated fine coal powder is below 1 percent, and sending the heated fine coal powder into a second microwave heating device by a conveying device for dry distillation; performing the dry distillation to the fine coal powder by the second microwave heating device to analyze other materials in the coal powder, preparing carbocoal after the dry distillation, sending the carbocoal into a mixer by the conveying device to prepare the mixture after adding bonding material; sending the mixture to a forming machine by a conveyer for forming so as to prepare a formed coke semi-finished product; sending the reformed coke semi-finished product into a third microwave heating device for being heated and carbonized to prepare red coke, and sending the carbonized red coke into a coke car to prepare a formed coke product. The invention has low production cost, high production efficiency, cleanness and environment protection because coke powder and waste are not produced during the production.

Description

technical field [0001] The invention relates to a method for producing molded coke, in particular to a method for making coal powder into molded coke by using microwave energy. Background technique [0002] my country is a big country of coke production, and coke production accounts for about 50% of the world's total coke production. Due to various reasons, my country's coking technology is still relatively backward. The amount of coal or weakly caking coal accounts for only 20-30%, but the amount of caking coal reaches 70-80%, which is far behind the advanced level in foreign countries (the amount of non-caking coal or weakly caking coal is 1:1 ), this digital structure not only increases the production cost of coke, but also exacerbates the current contradiction between supply and demand of caking coal in my country, which is extremely disproportionate to China's status as a major coke user. [0003] At present, most of the mechanical cokes produced in China are directly ta...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the invention of the present invention is to provide a kind of using coal powder as raw material to utilize inorganic binder and less caking coal, adopt microwave energy (band 2450 MHz or so) as a heating material, the heating speed is fast, the carbonization time is short, and it is an energy-saving and efficient method for making coal powder into coke by using microwave energy