(2) rotating cans. When the tank and the wall of the tank leak and the leakage cannot be prevented, liquid chlorine can be poured into other containers or storage tanks by dredging.
(3) chemical neutralization. When there is a small amount of leakage from the tank and container wall, chemical neutralization method can be used, that is, alkaline substances such as quicklime and baking soda powder are added to the water tank of the fire truck and sprayed into the tank and container to reduce the harm, or the leaked liquid chlorine can be introduced into the sodium carbonate solution for neutralization to form harmless or slightly toxic wastewater.
(4) Dilution attenuation. Focusing on the leakage point, water curtain or spray water gun should be set around the tank and container wall to dilute and reduce the toxicity, but it is not advisable to use direct current water or spray it directly to the leakage point to avoid the interaction between chlorine and water to generate acid and accelerate the corrosion of the leakage point.
Extended data:
The use of chlorine:
1, hydrochloric acid production
When hydrochloric acid is produced industrially, hydrogen is first ignited in the reactor, and then chlorine is introduced for reaction to produce hydrogen chloride gas. Hydrogen chloride gas is cooled by water and absorbed into hydrochloric acid. During the reaction between chlorine and hydrogen, toxic chlorine is surrounded by excessive hydrogen, which makes chlorine fully react and prevents air pollution.
2. Preparation of PVC
The preparation method of heavy monomer can be divided into two routes, one is the petroleum route with ethylene as raw material, that is, oxychlorination method. Ethylene is separated from petroleum cracking, and then chlorine gas produced by the reaction of oxygen and HCl (cracking by-product) reacts with ethylene to produce dichloroethane, and then hydrogen chloride is cracked to obtain vinyl chloride.
3. Used for brewery sewage treatment.
China patent discloses the method of treating beer wastewater with chlorine. Chlorine is a commonly used disinfectant in water supply companies, with low price, low dosage, reliable disinfection and mature technology. Chlorine can also deodorize and remove microorganisms, and the removal rate of biological oxygen consumption and chemical oxygen consumption is also high, which can ensure the stability of recycled water quality, so it is more suitable for brewery sewage treatment.
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