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Zhongtai Coal Coking: Installation of key equipment for the air separation system in the methanol project completed. Author/Source: Gas Separation. Date: 2020-01-02. Clicks: 125. On December 28, 2019, the distillation tower for the air separation system in Zhongtai Coal Coking’s 200,000 tons per year methanol production project using coke oven gas was successfully installed by Henan Energy Chemical Xinjiang Company. It is reported that the fractionation tower is the core equipment of the air separation system. On-site, it was assembled using 80 cold box panels; it has a height of 53 meters and a weight of 150 tons. Utilizing cryogenic air separation technology, it can meet both the required purity and volume of oxygen, as well as provide the nitrogen needed for operations such as purging the facility during startup. In addition, it features high product purity, a wide range of products, the ability to produce both oxygen and nitrogen simultaneously, and the generation of one or several rare gases. To ensure a one-time successful installation, the owner, general contractor, supervisor, and technical personnel from the construction unit worked together, conducting multiple discussions and evaluations of the lifting plan, as well as selecting the most suitable personnel and equipment, to guarantee that all aspects such as construction preparation, site preparation, positioning, and trial lifts were carried out flawlessly. At the installation site, a 160-ton crane was used to assemble the cold box panels one by one; manual alignment and welding were also employed. After 39 days of hard work, the distillation tower was finally installed. The successful installation of this distillation tower laid the foundation for the installation of the other equipment in this system. It is understood that Zhongtai Coal Coking is the first coal chemical enterprise in Baicheng County, Aksu Region, Xinjiang, to use coke oven gas to produce methanol. The 200,000 tons per year methanol production facility using coke oven gas is a supporting project for the 1.3 million tons per year coking plant and the 600,000 tons per year coking project; through processes such as precise desulfurization, conversion, syngas compression, methanol synthesis, and methanol distillation, the remaining coke oven gas from coking is converted into methanol. Once the project is completed and put into operation, it will be able to consume 432 million cubic meters of excess gas from coke ovens each year, making effective use of 250 million cubic meters of hydrogen resources, thereby reducing carbon dioxide emissions by 39,500 tons. Zhongtai’s coal coking project with an annual capacity of 1.3 million tons is equipped with the first 6.25-meter ramming coke oven in Xinjiang region. It uses imported integrated ramming machines, and is accompanied by a coal preparation system, dry quenching facilities, coke treatment systems, gas purification facilities, as well as utility and auxiliary facilities. The investment in this project amounted to 1.695 billion yuan, and it began producing coke on June 1, 2019.