【Haichuan Chemical Salary Updates】Investment of 5 billion yuan in China’s largest coal-based aromatics project: Shaanxi Jingyi Chemical’s advanced processing of coal tar, undertaken by CCCC
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Investment of 5 billion yuan in China’s largest coal-based aromatics project – completion of construction ahead of schedule. 2 hours ago. On the morning of April 30, the 550,000 tons per year coal tar pretreatment unit and the 30,000 standard cubic meters per hour hydrogen purification (PSA) unit as part of the Shaanxi Jingyi Chemical’s coal tar deep processing and multi-product utilization project, which is being constructed by the sixth branch of China National Chemical Engineering Corporation, were successfully completed. The Shaanxi Jingyi Chemical Coal Tar Deep Processing and Multi-product Integrated Utilization Project is located in the Jinjie Industrial Park in Shenmu City, Shaanxi Province. With a total investment of around 5 billion yuan, it covers an area of approximately 1,500 mu. Once completed and put into operation, the project will feature the largest coal-based aromatic hydrocarbons production line in China, serving as a model for the transformation and upgrading of coal enterprises in northern Shaanxi, as well as for the deep processing and comprehensive utilization of coal tar. Liuhua Jian undertook the construction work for the oil products center and some of the utility systems in the plant area for this project.
Is the 550,000 tons/year coal tar pretreatment unit an aromatic compounds plant? Anyway, I know that a hydrogen purification (PSA) unit with a capacity of 30,000 standard cubic feet per hour is not an aromatic compounds processing unit.
It seems that aromatic hydrocarbons were first extracted from coal tar. Are the production facilities for coal-based aromatic hydrocarbons smaller than those using petrochemical raw materials?
Aromatic hydrocarbons, abbreviated as “aromatics,” generally refer to hydrocarbons that contain a benzene ring structure in their molecules. It is a type of closed-chain class. Having a benzene ring as their basic structure, these compounds, which were discovered early in history, often had an aromatic odor; hence these hydrocarbons were called aromatic hydrocarbons. Even those hydrocarbons that were discovered later and did not have an aromatic odor continued to be referred to using this same name. Such as benzene, naphthalene, etc. The general formula for benzene homologs is CnH2n-6 (n≥6).
In the early 19th century, due to the development of the metallurgical industry, a large amount of coke was needed. The main method for producing coke was the dry distillation of coal, which involved heating coal in the absence of air. A look back at history: The dry distillation of coal not only yields coke but also produces useful gas; however, it also generates a black, sticky oily liquid with a distinctive odor! This substance is known as coal tar. At that time, coal tar was discarded as waste, polluting the environment and causing environmental hazards. With the development of the coking industry, the accumulation of coal tar became increasingly severe, and the utilization of coal tar turned into an important environmental and social issue that needed to be addressed urgently in production at that time. Looking back at history, scientists such as Faraday became interested in coal tar and isolated various important aromatic compounds, primarily aromatic hydrocarbons, from it. Using these aromatic compounds as raw materials, they synthesized a range of organic products including dyes, pharmaceuticals, fragrances, and more.
By the mid-19th century, an organic synthesis industry using coal tar as a raw material had been established. By around 1930, the production of benzene from coal had developed into a large-scale industrial activity on a global scale. Since 1940, benzene, toluene, xylene, and other compounds have been produced through the catalytic reforming of oil; when hydrocarbons are cracked to produce ethylene, aromatic compounds account for 40–48% of the by-products of the cracked gasoline, and thus oil has also become an important source of aromatic compounds.
It’s a pity that we no longer rank first in the FMTA category; advanced processing of coal tar has taken away the title of \"coal-based aromatics\" producers from us
This post was last edited by Desert Fish on 2020-5-31 19:24