Emergency rescue method of accident of methylchlorosilane production system

Abstract

The invention discloses an emergency rescue method of an accident of a methylchlorosilane production system. The production system is divided into multiple production units, the fire danger grade of each production unit is calculated, and corresponding emergency plans are made; in case of the accident, according to alarm information, determining the production unit where the accident takes place; starting the emergency plan of the production unit where the accident takes place, scheduling emergency rescue resources, and an emergency rescue team carrying out emergency rescue; and after the emergency rescue is finished, analyzing accident causes, re-evaluating the fire danger grade of the production unit where the accident takes place, and updating the corresponding emergency plan. According to the emergency rescue method provided by the invention, accident emergency responses are timely, rescue forces cooperate efficiency under unified command, the emergency handling efficiency of the accident is improved, the accident can be prevented from worsening to a quite large degree, and risks of personnel casualty and property loss which are possibly brought by the accident are reduced.

Description

technical field [0001] The invention relates to an emergency treatment method for chemical production accidents, in particular to an emergency rescue method for methylchlorosilane production system accidents. Background technique [0002] Organochlorosilanes (methylchlorosilane, phenylchlorosilane, vinylchlorosilane, etc.) are the basis of the entire silicone industry, and methylchlorosilane is the backbone of the silicone industry. Most organosilicon polymers are prepared from polydimethylsiloxane prepared from dimethyldichlorosilane (referred to as dimethyl) as the base polymer, and then introduced groups such as phenyl groups and vinyl groups. [0003] There are many methods for the synthesis of methylchlorosilane reported at present, and the more common method is to adopt the "direct method" to produce methylchlorosilane monomer, that is, to directly synthesize methyl chloride from silicon simple substance and methyl chloride in the presence of a catalyst (usually a Lewi...

AI Technical Summary

Problems solved by technology

The process and equipment of the synthesis process of methylchlorosilane are relatively complicated, and the dangerous substance methyl chloride and synthesis reaction gas involved in the fluidized bed reactor (the product has a low boiling point, and at this synthesis temperature, the product is in a gaseous state) are Class A combustible gases.

In the actual production process, the process control requirements are relatively high, especially the temperature at each point of the bed body. Once the temperature control of the reactor is improper, resulting in unsafe conditions such as overheating and local overheating, it is easy to cause explosion accidents.

If air is mixed into the reaction system (such as insufficient system replacement before the device starts up, air is entrained when the raw material silicon powder enters the reactor, etc.) or the heat conduction of the process reaction is not removed in time, it is likely to cause the reactor to explode.

The heat transfer oil system is an important auxiliary facility of the synthesis unit. The design defect or operation failure of the heat oil system will directly affect the safety of the reactor operation, which may lead to the risk of overheating of the reactor.

In addition, the hot oil itself has a greater degree of explosion hazard, and once it leaks (including internal leakage), it may cause an explosion accident

[0007] Another example is the process materials involved in each monomer fractionation device in the production process of methylchlorosilane, such as monomethyltrichlorosilane (monomethyl), dimethyldichlorosilane (dimethyl), trimethylchlorosilane (trimethyl) and a Methylhydrogensilane (a hydrogen-containing monomethyl) has dangerous characteristics such as flammability, corrosion, and water decomposition. When the device leaks or is mixed with contraindicated substances such as air, it is easy to cause accidents such as explosions.

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