Research On The Generation And Distribution Of Hydrogen In The Lead-acid Battery Charging Places

The study on regional safety problems of the non-high risk industry in raising the level of production safety in our country to the overall is of great significance, however, most of the existing research focused on traditional high-risk industry.This subject mainly research on the generation and distribution of hydrogen in the lead-acid battery charging places in the non-high-risk industry.In this paper,with the help of the measuring instrument to came to the conclusion that the battery will continue to generate hydrogen while charging. VRLA battery, with unique internal oxygen cycle reaction mechanism make the amount of hydrogen is far less than rich liquid type lead-acid battery. Based on the law of mas, Le Chatelier’s Principle and the battery field experiment results of different capacity analysis, different capacity of battery can produce large amounts of hydrogen in the end of the charging cycle, specific to 80% for charging battery produces a large amount of hydrogen gas. For different capacity of battery fully charged experiment, determine their respective charging time, and through the theoretical calculation of lAh battery fully used for electrolysis of water, can produce 0.418L H2. Through the field experiment and calculated capacity is 100Ah battery, charging in a single cycle with about 4mL water loss, and generate the 5L H2. The existing three types of battery charging place experiment results show that using unpowered fan exhaust enclosed charging in hydrogen concentration in the top of the plant,and reached 10000 ppm, with mechanical ventilation facilities enclosed workshop hydrogen charging for the maximum concentration of 1039ppm, open without mechanical ventilation facilities of charging hydrogen concentration of a maximum of 362ppm. Suppose that a charge cycle of hydrogen, all uniform distribution at the top of the building, gives the calculation formula of the hydrogen gas layer thickness, the concentration of hydrogen in the hydrogen gas layer can achieve lower explosive limit. Of the three different forms of battery charging area hydrogen concentration distribution in height direction. Shall be regarded as class a flammable and explosive place between closed-end battery charging, class a explosion-proof technology requirements must be met. Effective exhaust is one of the main technical means to prevent the explosion. Under the condition of ensure plant ventilation, at a local area of the plant set up open battery charging can be regarded as the riot.