The quality of catalyst and the packing in the acid towers is to be changed. The acid coolers and cooling tower are to be increased in size.
改造包括改进催化剂质量，更换酸塔填料，扩大酸冷却器和冷却塔。
The quality of catalyst and the packing in the acid towers is to be changed. The acid coolers and cooling tower are to be increased in size.
改造包括改进催化剂质量，更换酸塔填料，扩大酸冷却器和冷却塔。
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