Isothermal transformation applied to the 1.2 million tons per year ethylene glycol production project
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The shift unit of the first phase of Anhui Lujiang’s project for producing 1.2 million tons of ethylene glycol per year, along with the associated synthesis gas production, utilizes isothermal shift technology provided by Nanjing Dunxian Chemical Technology Co., Ltd. It is known that this company’s technology has been successfully applied in large-scale facilities such as Air Products’ plant for producing 1 million tons of ethylene glycol in the United States, Zhejiang Petrochemical’s integrated refining and chemical processing plant capable of handling 40 million tons of products, Ningxia Baofeng’s plant for producing 2.2 million tons of methanol, Inner Mongolia Yitai’s plant for producing 2 million tons of coal-to-oil products, Shaanxi Yulin Energy’s plant for producing 400,000 tons of ethylene glycol, and Shandong Hualu Hengsheng’s plant for producing 1 million tons of alcohols and ammonia in combination. What are the advantages and disadvantages of using isothermal shift technology in this project?
Isothermal conversion is generally used for the conversion of coal gas with low water vapor content; it holds little significance in the water-coal slurry gasification process and affects the steam balance of the entire plant
“\"Isothermal conversion\" is particularly suitable for processes that use pulverized coal gasification as the feedstock; for processes that use water-coal slurry as the feedstock, it offers significant energy-saving benefits, while also leaving the overall steam balance of the plant largely unchanged. Currently, in new installations or retrofit projects in China, isothermal conversion is almost always the choice chosen, as proven by practical experience. You can contact me at 18851611090 to discuss this together
Personally, I suggest placing the isothermal furnace for water-coal slurry gasification in the second converter, and the isothermal furnace for pulverized coal gasification in the first converter or in two separate isothermal furnaces
Personally, I suggest placing the isothermal furnace for water-coal slurry gasification in the second converter, and the isothermal furnace for pulverized coal gasification in the first converter or in two separate isothermal furnaces
Not bad, amazing:victory:
The CO isothermal shift is a new energy-efficient technology developed in recent years. It features low energy consumption, short process duration, and high conversion efficiency. It has been successfully industrialized in applications such as the high-concentration CO shift in coal-to-syngas production, enabling ammonia synthesis plants to achieve advantages such as comprehensive resource utilization and energy savings； Shortcomings: Poor applicability, low-concentration conversion has not yet been applied.
The key is to be able to operate reliably over long periods of time; there are several cases of failures due to equipment leaks. Why hasn’t the coal chemical industry abroad developed mature process technologies and equipment after all these years? The characteristics of the process medium and those of the transformation reactions mean that there are still many unknown issues to address in terms of equipment design, manufacturing, operation, and maintenance