Method for producing environment-friendly coal from straws

Abstract

The invention discloses a method for producing environment-friendly coal from straws. The method comprises the following steps of: preparing raw materials, grinding, primarily forming, pre-heating, grinding again, heating, activating, cooling, sieving and packaging. The invention has the benefits that the method effectively prevents excessive carbonization, increases carbon density and reduces defective rate; and the coal product is characterized in having a smooth surface and being not liable to fracture and uniformly carbonized. The method utilizes waste straws in rural areas to produce straw-derived coal, so as to achieve the purpose of turning waste into treasure, prevent environmental pollution and save resources.

Description

technical field [0001] The invention relates to a production method of straw environmental protection carbon. Background technique [0002] With the rapid development of the economy, energy is becoming more and more scarce in the market, and the contradiction between supply and demand is intensifying. As a new type of energy, environmentally friendly carbon not only effectively alleviates the contradiction between supply and demand, but also reduces environmental pollution to a large extent. Therefore, all countries are trying to use artificial methods to quickly turn straw into environmentally friendly carbon in a short period of time. [0003] Relevant research by the International Energy Agency shows that straw is a good clean and renewable energy source, and its average sulfur content is only 3.8‰, while the average sulfur content of coal is above 10%. It has been determined that the calorific value of straw is about 15000kj / kg, which is equivalent to 50% of standard co...

AI Technical Summary

Problems solved by technology

[0005] At present, many companies are trying to use straw to make environmentally friendly carbon, and the main process of using straw to make environmentally friendly carbon is the process of crushing, forming, carbonization, and activation. The shortcomings of the environmentally friendly carbon produced in this way are mainly reflected in: high temperature carbonization During the process, excessive carbonization often occurs due to excessive burning of straw, or the temperature is insufficient. After carbonization, the surface is rough, easy to break, easy to carbonize unevenly, etc., with low carbon density, low calorific value, and high defective rate, etc.