Hydrogen sulfide synthesis device

Abstract

The invention relates to a hydrogen sulfide synthesis device, which comprises a sulfur evaporator and a hydrogen sulfide synthesis tower, wherein an electric induction heating device is arranged outside the sulfur evaporator; the sulfur evaporator is provided with a sulfur feed port, a hydrogen feed port and a sulfur steam and hydrogen mixed gas outlet; at least two sections of catalyst bed layers are arranged in the hydrogen sulfide synthesis tower; the hydrogen sulfide synthesis tower is provided with a sulfur steam and hydrogen mixed gas inlet and a synthetic gas outlet; the synthetic gas outlet is positioned on the lower part of the final section of the catalyst bed layer; and the sulfur evaporator and the hydrogen sulfide synthesis tower are connected with the sulfur steam and hydrogen mixed gas inlet through the sulfur steam and hydrogen mixed gas outlet. The hydrogen sulfide synthesis device provided by the invention has high liquid sulfur evaporation efficiency; the temperature of the device is easy to control; the synthesis reaction rate is high; and the device is convenient to start and stop.

Description

technical field [0001] The invention relates to a hydrogen sulfide synthesis device. Background technique [0002] Hydrogen sulfide is an important chemical raw material, which is mainly used in the synthesis of fine organic chemicals and inorganic salts, such as the manufacture of pesticides and pharmaceuticals, the refining of metals and the manufacture of various industrial reagents. [0003] The synthesis of hydrogen sulfide from sulfur and hydrogen is the most direct, and the purity of hydrogen sulfide is the highest. It is suitable for the application of fine chemicals such as methyl mercaptan for the synthesis of methionine. There are two methods: one method is to dissolve liquid sulfur in a solvent, and then pass hydrogen into it to react to generate hydrogen sulfide gas. Another method is to use sulfur vapor and hydrogen to directly synthesize hydrogen sulfide gas. [0004] The method of dissolving liquid sulfur in a solvent and reacting with hydrogen to produce h...

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Problems solved by technology

[0004] The method of dissolving liquid sulfur in a solvent and reacting with hydrogen to produce hydrogen sulfide has a good initial reaction, but as the reaction progresses, the solvent will coke, the reaction efficiency will decrease, and it is difficult to operate industrially

[0005] Problems to be solved in the method of directly synthesizing hydrogen sulfide gas with sulfur vapor and hydrogen: First, liquid sulfur needs to be heated and vaporized to above 300°C, so there are low sulfur evaporation efficiency and selection of heat-resistant and sulfur-resistant materials for evaporators and synthesis towers Second, the reaction between sulfur vapor and hydrogen is a strong exothermic reaction, and the current reactor is difficult to effectively control the temperature, resulting in low conversion rate of hydrogen sulfide and insufficient recovery of reaction heat.

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