my country's original oxygen-enriched continuous gasification technology for coal

Thread Content

my country's original pulverized coal forming oxygen-enriched continuous gasification technology has achieved a major breakthrough. The reporter learned from Jiangxi Changyu Industrial Co., Ltd. on December 5 that after more than 10 months of arduous research, the company and Fujian Sanming Chemical Co., Ltd. jointly implemented the oxygen-enriched oxidation technology renovation project of fixed-bed gas furnace briquettes and achieved success in one fell swoop. The five newly built 3.0m fixed-bed intermittent gas furnaces have all been put into operation at Sanming Chemical Industry. All indicators are better than the current level of the domestic fertilizer industry. The gas production and carbon conversion rate have been increased by half, the comprehensive cost has been reduced by 10%, and the environmental protection problems of sulfide and carbon dioxide emissions from intermittent gas furnaces have been completely solved. Zhao Lequn, a gas-making technology expert and chief engineer of Jiangxi Changyu Industrial Co., Ltd., told reporters that the cooperation between Sanming Chemical and Jiangxi Changyu in gas furnace renovation began in June 2006. They first successfully carried out high-intensity gasification on a 3.0m series fixed-bed gas furnace using briquettes as raw materials. On this basis, they spent more than 10 months on technical research on the oxygen-enriched continuous gasification of briquettes, and finally achieved success. At present, the newly put into operation of Sanming Chemical's oxygen-enriched gas furnace has increased gas production by 50% when burning briquettes in a single furnace. Compared with the intermittent gasification process, the comprehensive cost of ammonia per ton has dropped by about 10%. The coal consumption into the furnace has dropped by about 30%. The fixed carbon content in the slag has dropped from 20% in the intermittent gas furnace to less than 5%. According to You Biao, chief engineer of Sanming Chemical Co., Ltd., the pulverized coal forming oxygen-enriched continuous gasification technology is a systematic project that not only solves the thermal stability, thermal strength, chemical activity, and slag properties of the briquettes, but also solves the scale and product cost of oxygen-enriched production, as well as the key equipment design and engineering design issues of the gas furnace. Transforming the fixed-bed intermittent gas furnace into a new oxygen-rich continuous gasification process using briquettes as raw material can solve all these problems. Currently, there are more than 5,000 fixed-bed intermittent gasification gas furnaces in the national nitrogen fertilizer industry. They not only have problems such as low carbon conversion rate and high energy consumption, but also emit large amounts of sulfide and carbon dioxide. If they are replaced by foreign advanced pulverized coal gasification technology, the investment will be large and the technology transplant period will be long. The oxygen-enriched oxidation technology renovation project for coal briquettes jointly implemented by Fujian Sanming Chemical Industry and Jiangxi Changyu Company has created a practical path for technological transformation for similar nitrogen fertilizer companies and similar gas furnaces across the country. (China Chemical Industry News)