Ammonia decomposition furnace lining material

　　The large-scale coke oven gas purification and recovery AS process is actually a gas purification process of washing benzene, ammonia washing, ammonia distillation, deamination, deacidification, ammonia decomposition and sulfur recovery with ammonia as the alkali source, which is characterized by the process flow. Short, no chemicals need to be added during the entire process, and the emissions are harmless, in line with the current increasing environmental requirements.

 

　　Since 1993, it has been recommended by Anshan Jiaokang Institute, and the ammonia decomposing furnace, Claus furnace lining brick and masonry installation in the coke oven gas purification AS process of the first domestic Mahua coking plant have been developed. Success. The lining material has 13 varieties and more than 60 specifications. All the new lining refractory bricks of this type in the country are provided by our company, and the total number of furnaces for masonry installation is 74. In addition to the Shijiazhuang coking plant, the first two types of furnaces imported from Germany are Luoyang. The refractory research institute provided the experimental plant, and the rest were all built and installed by our factory. The market coverage reached over 97%.

 

    Since 1993, in the process of building and putting into operation many furnaces in the country, we have continuously discussed and improved and improved the various problems arising from the use of the furnace, and the technology has been quite Mature, the furnace built by our factory today guarantees a service life of more than six years.

 

　　At the beginning of the second life cycle after 1998, we have redesigned the furnace lining brick, thermocouple thermocouple inserting brick, insulation brick and insulation layer material, among which the waste heat boiler inlet tube plate and heat exchange tube ceramic protection The design of the tube is unique, and the aluminum silicate fiber felt is added on the inner wall of the furnace shell, and the expansion amount of the furnace wall refractory brick is calculated very accurately, which fundamentally solves the problem that the conventional inserted thermocouple is often cut and made The control room cannot control the temperature, which causes the production accident of the furnace to overheat the catalyst.