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Important milestone achieved in the oxygen separation unit for Jin Dadi Chemical’s 600,000-ton sodium bicarbonate project. Author/Source: Gasification World. Date: November 19, 2021. Clicks: 8. On November 10, 2021, the welding of the external pipeline corridors and the oxygen pipelines in the oxygen separation unit for Jin Dadi Chemical Co., Ltd.’s 600,000-ton/year sodium bicarbonate project, carried out by the first branch of Thirteen Chemical Construction Company, was successfully completed. The oxygen pipeline is 1,044 meters long and supplies high-purity oxygen to the Phase 4 gasification unit. Project Overview: The 600,000-ton/year soda ash project in Henan Jindadi is accompanied by a 600,000-ton/year ammonia synthesis plant. The project uses coal as raw material and a Jinhua furnace to produce syngas; trace impurity gases are removed through processes such as shift reaction, low-temperature methanol washing, and liquid nitrogen washing, thereby producing synthetic ammonia. The purified high-purity carbon dioxide gas is used to produce baking soda through the wet decomposition method. The 450,000 tons per year synthetic ammonia relocation and renovation project in Henan Jindadi uses three Jinhua Model 3.0 furnaces, with two in operation and one as a backup, each requiring 1,500 tons of coal per day. Driving in February 2019. Since full-scale production began on May 8, 2019, Nissan’s synthetic ammonia output has remained above 1,800 tons. The maximum daily output was 1,912.8 tons, reaching 106.3% of the designed capacity. In February 2020, the Jinjadidi ammonia synthesis plant had an average daily production of 1,852.9 tons of ammonia. The gasification unit consumed an average of 57.64 kWh per ton of ammonia, while the ammonia synthesis plant as a whole had an average electricity consumption of 205.53 kWh per ton of ammonia (including energy used for air separation and circulating water). The total cost per ton of synthetic ammonia is 1,450 yuan, which is more than 600 yuan lower than that of the conventional fixed-bed gasification method. The synthetic ammonia capacity associated with the 600,000 tons per year soda ash project is also 600,000 tons per year.