Nanjing Tech University

Nanjing Gekof Institute of Environmental Protection Technology & Equipment Co., Ltd.

Jiangsu Deyitong Environmental Protection Technology Co., Ltd.

Nanjing Liyuan Environmental Protection Technology Co., Ltd.

Nanjing Liuyan Environmental Protection Technology Co., Ltd.

Dahua Liu

Haitao Xu

Mingbo Li

Jing Song

Yanzhong Xu

Renyuan Chen

Meng Xu

Junmin Li

Zhenshan Wu

A device for preparing a sulfite includes: a mother liquid tank and alkaline bin connected to a concentrated alkaline tank, connected to a tower reactor first reactor, one first reactor bottom output end is connected to a first gas-and-liquid mixer and another to a bubbling reaction kettle upper end, a bubbling reaction kettle gas output end is connected to the first mixer being connected to a first reactor upper portion; first reactor upper portion gas and second reactor bottom output ends are connected to a second mixer being connected to the second reactor top; and the bubbling reaction kettle is connected to a centrifugal machine or the alkaline tank, the machine being connected to a wet material bin and the liquid tank. A method includes preparing main and auxiliary absorption liquids, generating a middle slurry, reabsorbing residual gas SO, generating a target product, separating the target product, drying and packaging.

Device and method for preparing sulfite

A system for resource recycling of sulfur dioxide includes a charcoal reduction furnace, a high temperature dust remover, a cooling separator A, a liquid sulfur tank, a cooling separator, a tail gas absorption tower, a gas stripping tower, a hypo reactor, a centrifuge, a mother liquor tank and a thickener. And a method for resource recycling of sulfur dioxide includes the following steps: (1) preparing elemental sulfur, (2) removing dust from a process gas containing gaseous sulfur, (3) separating elemental sulfur, (4) reabsorbing residual SOgas, (5) purifying sulfur powder, (6) preparing a slurry of cured hypo, (7) performing liquid-solid separation, and (8) preparing an absorption slurry. According to the method, SOgas is reduced into liquid sulfur and sulfur powder, and sodium thiosulfate is coproduced.

System and method for resource recycling of sulfur dioxide

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Nanjing, China

Dahua Liu