Production method of efficient, energy-saving and environment-friendly formed and carbonized material

Abstract

The invention discloses a production method of an efficient, energy-saving and environment-friendly formed and carbonized material. The method comprises the following steps of performing dehydration, drying and powdering on water-washed clean coal, compression-molding the powder through a pelletizer, and then crushing the molded powder into formed materials with a grain size of 2-10 mm through a straightening granulator; feeding the formed materials into a carbonizing converter from the tail portion, performing segmented and temperature-controlled heating inside the carbonizing chamber of the carbonizing converter from the room temperature to 550-600 DEG C, and performing cooling and discharging carbonized materials from the converter end of the carbonizing converter. Retorting gas volatilized during the low-temperature dry distillation process of the formed materials can move in the same direction with the raw materials under negative-pressure control and enter a high-temperature incinerator via a converter end special gas passage of the carbonizing converter for incineration; high-temperature gas generated by the incineration can enter the heating chamber of the carbonizing converter through a gas inlet pipe at the converter end of the carbonizing converter and move reversely relative to the formed materials to indirectly heat the formed materials and further to achieve low-temperature distillation effects. The production method of the efficient, energy-saving and environment-friendly forming carbonization material improves the quality of the carbonized material and meanwhile reduces energy consumption and emission to really achieve energy conservation and environmental protection.

Description

technical field [0001] The invention relates to a production method of shaped carbonized material, in particular to a method for producing carbonized material by recycling high-temperature incineration gas of carbonization tail gas. Background technique [0002] Coal dry distillation refers to the process of thermally decomposing raw coal into coke / semi-coke, gas and tar under the condition of isolation of air. Depending on the final heating temperature, dry distillation can be divided into low-temperature dry distillation (560°C-600°C), medium-temperature dry distillation (700°C-900°C) and high-temperature dry distillation (900°C-1100°C). The solid product of coal low-temperature carbonization (or low-temperature pyrolysis) is black semi-coke with loose structure, low gas yield and high tar yield; coal low-temperature carbonization technology is only a thermal processing process, and it is produced under normal pressure without oxygen or Hydrogenation can produce gas and t...

AI Technical Summary

Problems solved by technology

[0003] The impact of carbonized material on the production of activated carbon is crucial. The quality of carbonized material directly affects the quality of activated carbon. The current production of carbonized material is an extensive production, and the quality of the produced carbonized material is low. During the carbonization process Due to the phenomenon of burning and fixing carbon due to the entry of air, it not only reduces the carbonization yield but also affects the quality of carbonized materials. At the same time, the high-temperature gas generated during the carbonization process is not fully utilized, resulting in waste of energy and impact on the environment.

The carbon monoxide, hydrogen and hydrocarbons such as methane released by materials during carbonization not only pollute the air, but also waste energy. Some need to build combustion chambers to solve the waste gas generated by carbonization, which increases the infrastructure of enterprises on the other hand. invest

Under the current background that the fine coal in the low-temperature carbonization industry cannot be comprehensively utilized, the product quality is not satisfactory, and the environmental protection problem has not been fundamentally resolved, it is urgent to promote a reliable and stable process with a wide range of application to the comprehensive utilization industry of low-metamorphism coal. Investing in an externally heated rotary low-temperature retort system in coal production areas can promote enterprises to obtain considerable economic benefits and open up a new way for enterprises to comprehensively utilize resources

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