Destruction method of obsolete airbag gas generator

Abstract

The invention relates to a method for destroying a waste automobile airbag gas generator. The method adopts a water knife cutting process, namely by using high-pressure water jet flow to carry out cold-state cutting so as to destroy the airbag gas generator, and involves a water knife cutting machine, wherein the water knife cutting machine is mainly composed of a high-pressure pump, a numerical control machining platform, an injection cutting head, a sand supply system and a cooling system; and meanwhile, a waste water pretreatment system is also provided. The airbag gas generator is divided into two halves after being cut by a water knife, wherein sodium azide (NaN3 ) and potassium nitrate (KNO3) and the like of the airbag gas generator are completely dissolved in water, and an igniter is completely destroyed to lose the detonation function, so that only a metal shell capable of being recycled of the whole gas generator remains, and the metal shell is separately treated after being collected. Compared with the prior art, the method for destroying a waste airbag gas generator has the advantages of being safe and reliable in process, clean and environment-friendly, small in occupied area, low in operation cost, high in treatment efficiency and capable of running for 24 hours continuously; and meanwhile, the recycling application of the gas generator outer shell after treatment is wide.

Description

technical field [0001] The invention relates to the technical field of waste treatment, in particular to a method for destroying waste airbag gas generators. Background technique [0002] With the rapid development of society and the popularization of vehicles such as cars and buses, airbags are used more and more as a standard safety configuration of vehicles. When the service life of the vehicle expires, or the vehicle is scrapped ahead of time, recalled for various reasons, or unqualified products are produced during the production process of the airbag, unexploded airbags will be produced; unexploded airbags are unstable due to And unsafe, has been defined as hazardous waste, belonging to HW15 explosive waste (hazardous waste code is 900-018-15). Therefore, the legal compliance and safe and professional destruction and scrapping technology of abandoned automobile airbags are particularly important, which is an important technical barrier to the development of vehicle sa...

AI Technical Summary

Problems solved by technology

One is electrification detonation, which mainly sends detonation instructions through wires to each airbag to detonate them one by one. There are mobile battery detonation devices, detonation devices in a closed box, and wireless remote detonation devices. This method will produce toxic gases and dust. , and the operation is cumbersome, and the detonation efficiency is low; in addition, when using this method for batch disposal, it is not easy to check for squibs, and there is a great potential safety hazard

The second is incineration and destruction, that is, directly put the gas generator into the open combustion device, and the gas generating agent will be completely burned and decomposed into NH at a certain temperature. 3 , NO x and other gases, the remaining shell of the generator can be recycled and used as resources; however, this method occupies a large area and has very high requirements for the incineration device. At the same time, it needs to be equipped with special waste gas collection and disposal devices, and the requirements for on-site management are high. At present, only companies that produce gas generators such as Daicel and Autoliv use this method to destroy unqualified products produced during the production process.

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