Separating tower for n-butane and iso-butane in n-butane isomerization

Abstract

The invention relates to the technical field of chemical processing of organic high-molecular compounds, in particular to an n-butane and isobutane separation tower in n-butane isomerization, which comprises a separation tower shell with the lower end fixedly connected with a separation tower base, the lower end of the separation tower shell is fixedly connected with a gas inlet pipe group, the inner top of the separation tower shell is connected with a separation mechanism, and the separation mechanism is connected with a gas inlet pipe group. The separation mechanism comprises a main separation box and a pair of auxiliary separation boxes, a continuous replacement type separation belt is arranged between the main separation box and the auxiliary separation boxes, a wind power driving part is connected into the air inlet pipe set, and a transmission assembly is connected between the wind power driving part and the continuous replacement type separation belt. Through cooperation of the wind power driving part, the transmission assembly and the continuous replacement type separation belt, the continuous and stable separation effect of the continuous replacement type separation belt can be kept, feeding of a mixture of n-butane and iso-butane does not need to be stopped, and the separation efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of chemical processing of organic polymer compounds, in particular to a n-butane and isobutane separation tower for n-butane isomerization. Background technique [0002] The isomerization of n-butane is a very important reaction in the petrochemical industry. Its product isobutane is one of the raw materials for the production of high-octane gasoline. The dehydrogenation product of isobutane isobutene can be used to produce unleaded gasoline additive methyl Tert-J base ether and ethyl tert-butyl ether. The isomerization reaction mechanism of n-butane is related to the type of catalyst. At present, traditional rectification methods are mainly used for separation. However, due to the close boiling point of n-butane and isobutane, The process leading to the separation of n-butane and isobutane by rectification is very energy-intensive. Therefore, it is necessary to study an environmentally friendly new technol...

AI Technical Summary

Problems solved by technology

In actual use, microporous molecular sieves need to be frequently stopped to wait for the release of n-butane, resulting in low separation efficiency

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