Abrégé

The present disclosure provides a resource utilization method of crude sodium sulfate. The method comprises the following step: reducing the crude sodium sulfate to form a sodium sulfide solution; making the sodium sulfide solution perform a first reaction with chlorine to obtain sulfur and a sodium chloride solution; and electrolyzing the sodium chloride solution to obtain a sodium hydroxide solution and chlorine, and supplying the generated chlorine to the sodium sulfide solution to perform the first reaction. In the above resource utilization method of crude sodium sulfate, the sodium hydroxide is generated by combining relatively simple and mature process steps, and the crude sodium sulfate containing sodium chloride and sodium sulfate can be effectively converted to the sodium hydroxide in large market demand, so that complete recycling of sodium element and sulfur element is realized, which not only can fully utilize the resources and protect the environment, but also can create great economic benefits and environmental benefits, thus having a great significance to realize the green development of relevant industries.

Classes IPC  ?

• C01B 17/06 - Préparation du soufrePurification à partir de sulfures non gazeux ou de matières contenant de tels sulfures, p. ex. des minerais
• C25B 1/16 - Hydroxydes

Abrégé

Provided in the present disclosure is a resource utilization method for crude sodium sulfate. The method comprises the following steps: reducing crude sodium sulfate to form a sodium sulfide solution; subjecting the sodium sulfide solution and chlorine to a first reaction to obtain sulfur and a sodium chloride solution; and electrolyzing the sodium chloride solution to obtain a sodium hydroxide solution and chlorine, and introducing the generated chlorine to the sodium sulfide solution to perform the first reaction. In the resource utilization method for crude sodium sulfate, simple and mature process steps are combined to generate sodium hydroxide, such that crude sodium sulfate comprising sodium chloride and sodium sulfate can be effectively converted into sodium hydroxide with large market demand, realizing complete circulation of sodium and sulfur. The method can take full advantage of resources and protect the environment, and can also create great economic benefits and environmental benefits, thereby having great significance for realizing green development of related industries.

Classes IPC  ?

• C01B 17/06 - Préparation du soufrePurification à partir de sulfures non gazeux ou de matières contenant de tels sulfures, p. ex. des minerais
• C25B 1/04 - Hydrogène ou oxygène par électrolyse de l'eau
• C25B 1/16 - Hydroxydes
• C25B 15/02 - Commande ou régulation des opérations