Emergency disposal method for accident of aluminum ethyl production system

Abstract

The invention discloses an emergency disposal method for an accident of an aluminum ethyl production system. The emergency disposal method comprises the following steps of dividing the production system into a plurality of production units; determining the fire danger class of each production unit according to the material and process characteristics of the production unit, and making a corresponding emergency plan aiming at each fire danger class; when the accident occurs, according to alarm information, determining the production unit where the accident occurs, starting up the corresponding emergency plan, and informing relevant departments to perform accident disposal; analyzing an accident cause after the accident disposal is finished, reassessing the fire danger class of the production unit where the accident occurs, and updating the corresponding emergency plan. The emergency disposal method for the accident, provided by the invention, is timely in accident emergency response and high in efficiency.

Description

technical field [0001] The invention relates to an emergency treatment method for chemical production accidents, in particular to an emergency treatment method for triethylaluminum production system accidents. Background technique [0002] Triethylaluminum is a transparent liquid with extremely active chemical properties. It can react with olefins to produce olefin dimers, various monoolefins, higher alcohols and other chemical intermediates; it can also be used with certain transition metal compounds to form olefin polymerization catalysts. As an alkylating agent, reducing agent, gasoline additive, etc. [0003] The synthesis method of triethylaluminum mainly includes triethylaluminum and aluminum powder, hydrogenation reaction under high-pressure hydrogen and high temperature; after the hydrogenation reaction, flash hydrogen, then feed ethylene, and carry out ethylation under high-pressure ethylene and high temperature Reaction; After the ethylation reaction is completed,...

AI Technical Summary

Problems solved by technology

At the same time, a large amount of heat is released during the reaction process, which puts forward high requirements on the condensation system during the reaction process. If the design of the refrigerant system is defective or the operation fails, it may cause the risk of overheating of the reactor and affect the safety of the reactor operation.

[0005] The hydrogenation reaction and ethylation reaction in the production process of triethylaluminum are gas-solid-liquid three-phase reactions, and the activity of the generated triethylaluminum is very strong, so the precision requirements of the whole set of production equipment are relatively high, high-precision equipment It is easy to wear and tear, and failure to replace it in time may lead to accidents (referring to fire or explosion accidents)

For example, the reactor of the hydrogenation reaction is mixed with air (such as before the equipment is started, the system N 2 Insufficient replacement) or the large amount of heat released by the hydrogenation reaction is not transferred in time, which may cause the reactor to explode

Another example is the improper temperature control of the reactor during the ethylation reaction, resulting in overheating and partial overheating of the reactor, which may cause the rapid decomposition of triethylaluminum to produce ethylene, hydrogen, and aluminum powder, which may easily lead to explosion accidents

[0006] The production device of the triethyl aluminum production system is a typical chemical production device with medium-high temperature, high pressure and high risk of fire and explosion. The production process is relatively complicated and the reaction conditions are harsh.

The air content in the production device exceeds the standard, and the leakage of the connection system such as valves, pipes, and flanges may cause fire or explosion accidents

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