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The reporter learned from the recent seminar on the conversion of synthetic ammonia plants to high "alcohol/ammonia" ratios and food-grade CO2 technology exchange seminars. The new high-efficiency isotherm type was developed by Hangzhou Kuaikai High-efficiency Energy-saving New Technology Co., Ltd. and the Zhejiang University of Technology's School of Chemical Engineering. The internals of the methanol synthesis tower have become the key complementary products of the methanol synthesis towers of domestic coal chemical companies.
The internals of the tower have been optimized in design, basically no upper and lower thermal insulation layers. The specific heat transfer area of ​​cold pipes is 2 to 3 times that of ammonia synthesis towers, and the area ratio of up and down cold pipes is ≥ 50%; Efficient spiral plate heat exchanger, although the heat transfer area is much larger than the ammonia synthesis tower, but due to the high heat transfer efficiency of the heat exchanger, its height is much lower than that of the tubular heat exchanger; the large amount of catalyst loading is beneficial to Increase the production capacity of methanol towers; use special sealing for catalyst cover plates and special lifting tools for loading and unloading catalysts to facilitate the loading and unloading of catalysts.
It is understood that methanol production with 12MPa pressure of the alcohol process, there are low pressure and high pressure monol alcohol process, using copper catalysts. Since the life of the catalyst depends mainly on the quality and temperature of the synthesis gas, the development of a column internals that enables the reaction temperature difference to be as small as possible, high yield, low resistance, long catalyst life, and adaptability to the front-end operation has been the industry’s Focused research topics. The new high-efficiency isothermal methanol synthesis tower internals have been used for long-term production runs in many domestic chemical companies, which not only have low resistance and stable production, but also produce 50% higher single-column methanol production than traditional towers under very low load conditions. At the same time, it is an efficient internal part with small temperature difference, stable operation and reliable structure. It is not only widely used in the production of methanol, but also used in the production of methanol in high pressure and low pressure independent systems.
The internals of the tower have been optimized in design, basically no upper and lower thermal insulation layers. The specific heat transfer area of ​​cold pipes is 2 to 3 times that of ammonia synthesis towers, and the area ratio of up and down cold pipes is ≥ 50%; Efficient spiral plate heat exchanger, although the heat transfer area is much larger than the ammonia synthesis tower, but due to the high heat transfer efficiency of the heat exchanger, its height is much lower than that of the tubular heat exchanger; the large amount of catalyst loading is beneficial to Increase the production capacity of methanol towers; use special sealing for catalyst cover plates and special lifting tools for loading and unloading catalysts to facilitate the loading and unloading of catalysts.
It is understood that methanol production with 12MPa pressure of the alcohol process, there are low pressure and high pressure monol alcohol process, using copper catalysts. Since the life of the catalyst depends mainly on the quality and temperature of the synthesis gas, the development of a column internals that enables the reaction temperature difference to be as small as possible, high yield, low resistance, long catalyst life, and adaptability to the front-end operation has been the industry’s Focused research topics. The new high-efficiency isothermal methanol synthesis tower internals have been used for long-term production runs in many domestic chemical companies, which not only have low resistance and stable production, but also produce 50% higher single-column methanol production than traditional towers under very low load conditions. At the same time, it is an efficient internal part with small temperature difference, stable operation and reliable structure. It is not only widely used in the production of methanol, but also used in the production of methanol in high pressure and low pressure independent systems.
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