Safe discharging method and application thereof

Abstract

The invention relates to the field of emergency disposal of chemical engineering accidents, and discloses a safe discharging method of a two-phase mixed liquid material and application thereof. The two-phase mixed liquid material comprises a first phase and a second phase which are immiscible, the density of the first phase is greater than that of the second phase, and the safe discharging methodcomprises the following steps: a first overflow step: injecting the two-phase mixed liquid material into a first phase region, and enabling the second phase and at least part of the first phase to overflow to a mixed phase region; and a second overflow step: enabling at least part of the second phase in the mixed phase region to overflow to the second phase region. The safe discharging method is particularly suitable for separation of an acid phase and an organic phase in a sulfuric acid alkylation process, two phases can be rapidly separated, and the two-phase reaction is reduced. The safe discharging method is particularly suitable for separation of an acid phase and an organic phase in a sulfuric acid alkylation process, two phases can be rapidly separated, and the two-phase reaction isreduced.

Description

technical field [0001] The invention relates to the field of emergency treatment of chemical accidents, in particular to a safe unloading method and its application, in particular to a safe unloading method suitable for the separation of an acid phase and an organic phase in a sulfuric acid alkylation process and its application. Background technique [0002] The sulfuric acid alkylation process is an ideal process for producing high-octane gasoline. It uses concentrated sulfuric acid as a catalyst to react butene with isobutane to produce high-octane gasoline with trimethylpentane as the main component. The volume ratio of the acid to hydrocarbon is about 1:1.5. Due to the poor compatibility between the acid phase and the hydrocarbon phase, it is necessary to mix the two phases by stirring or static mixer to cause interfacial reaction. [0003] In this process, there are two main safety risks. First, due to the strong oxidizing properties of concentrated sulfuric acid, the ...

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Problems solved by technology

[0004] The key equipment of the sulfuric acid alkylation process is the reactor. When the corrosion leakage of the reactor is uncontrollable, the reaction system needs to be quickly removed and stored in the storage tank, and the mixing effect of the acid hydrocarbon phase is reduced during the transfer storage process. , so that the heat transfer effect is reduced and the concentration of certain substances at the two-phase interface is aggravated, which causes problems such as intensified side reactions and local overheating, and further causes the reaction of the entire system to be out of control

There is no separation device and method for better two-phase mixed reaction liquid material in the prior art

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