Process method for refining lime-carbonated coal balls

Abstract

The invention discloses a process method for refining lime-carbonated coal balls, and relates to a production process for coal gas. The process method is characterized by comprising the following steps of: (1) placing unslaked lime in a humidifier, adding water into the humidifier and stirring the lime and the water to prepare low-moisture slaked lime; (2) grinding the low-moisture slaked lime into fine powder of 80 to 100 meshes; (3) conveying the fine lime powder to an ash bin through a gas pipeline conveying device; (4) metrically adding water into the ash bin for further stirring and slaking to prepare the slaked lime for matching with moisture content of about between 15 and 17 percent; (5) classifying the coal at different ore occurrences into three ore occurrence coal piles; (6) metrically extracting coal dust from the three ore occurrence coal piles to make synthetic coal dust; (7) feeding the slaked lime for matching and the synthetic coal dust into a moulded coal mixing cabin respectively and uniformly stirring the slaked lime and the coal dust to form coal dust mixture to be pressed; and (8) forming the coal balls by pressing. By using the finished slaked lime, the process method has the advantages of reducing the dust pollution, improving the granulation ratio and the heat intensity, regularly blending the used coal, stabilizing the quality of the coal balls and reducing the consumption of the production.

Description

Technical field: [0001] The invention relates to a gas-coal gasification production process. Background technique: [0002] Lime carbonized briquettes gas production process is to put lime carbonized briquettes in the gasifier as raw material to produce gas, the traditional production of lime carbonized briquettes is to use quicklime blocks to digest with water, and then after about 7 days of simmering with Coal is blended in a certain proportion and then pressed into briquettes. In the process of coal use, proper coal blending is not carried out according to the coal quality. The disadvantages of this process mainly include: [0003] 1. Quicklime blocks are digested by adding water manually, which not only has a large error in the control of water addition, but also has a high labor intensity. At the same time, a large amount of heat and steam are generated during the digestion process. Small particles of lime are entrained in the steam, which generates a large amount of ...

AI Technical Summary

Problems solved by technology

This part of the material is used in the production of briquettes, resulting in a low molding rate of briquettes and poor thermal stability of the produced briquettes. It is easy to burst when used in gas production, and the generated coal powder is carried out with the gas, resulting in carbon loss and increased loss;

[0005] 3. In the process of using coal, the coal quality is not considered. The coal at several mines has different structural components. Generally, the coal pile at one mine is used up and then the coal pile at another mine is used to make the lime carbonize the structure of each batch of briquettes. There are differences in components. Due to the lack of reasonable coal blending, the quality of the produced briquettes fluctuates greatly, and the quality of the gas produced varies from furnace to batch, which also affects the consumption of gas production.