The treatment of chlorine waste in chemical plants involves several key steps. Firstly, titanium draft fans are used to introduce chlorine waste gas into the waste chlorine gas absorption tower. Subsequently, a sodium hydroxide solution is sprayed into the waste chlorine gas absorption tower using an alkali solution circulation pump. Inside the absorption tower, chlorine gas comes into full contact with the sodium hydroxide solution and undergoes a reaction, resulting in the absorption of chlorine gas by the alkali solution. This cyclic reaction process ultimately produces sodium hypochlorite solution, fulfilling the requirement for sodium hypochlorite solution in acetylene production, while effectively preventing chlorine gas from entering the atmosphere and avoiding environmental pollution issues. The entire treatment process includes equipment such as the waste gas absorption tower, alkali solution circulation pump, and a series of steps involving spraying sodium hydroxide solution and gas reactions. The core objective of this process is the absorption and treatment of chlorine gas, primarily achieved by preparing sodium hypochlorite solution to clear chlorine gas and reduce environmental pollution. In the chloralkali industry, this treatment process holds significant importance.
To ensure feasibility and environmental friendliness, the use of titanium as a material in this process is a prudent decision. Titanium boasts excellent corrosion resistance, allowing it to maintain stable operation even in corrosive environments, making it particularly suitable for handling chlorine-containing waste gases. In this process, several titanium equipments may be employed:
- Titanium Absorption Tower (Titanium Waste Gas Absorption Tower): This tower facilitates sufficient contact between waste chlorine gas and sodium hydroxide solution, achieving chlorine gas absorption and reaction to produce sodium hypochlorite solution.
- Titanium Pump: An alkali solution circulation pump, constructed with titanium materials, ensures corrosion resistance during the circulation of sodium hydroxide solution.
- Titanium Pipes and Fittings: These components remain stable in corrosive environments, used for conveying sodium hydroxide solution and waste gas.
- Titanium Heat Exchanger: Required for heating or cooling sodium hydroxide solution during the waste gas treatment, maintaining temperature control.
- Titanium Reactor: Employed for the reaction between chlorine gas and sodium hydroxide solution, ensuring corrosion-resistant conditions.
- Titanium Tanks: Used for storing the absorbed sodium hypochlorite solution, ensuring stable preservation of the solution.
The application of these titanium equipment pieces effectively guarantees the stability and environmental sustainability of the waste gas treatment process, while reducing the risks of equipment corrosion and environmental pollution.