Hydrogen sulfide synthesis device

A synthesis device, a technology for hydrogen sulfide, applied in the directions of hydrogen sulfide, chemical instruments and methods, chemical/physical processes, etc., can solve the problems of difficult to effectively control temperature, reduced reaction efficiency, solvent coking phenomenon, etc., and achieve easy temperature control and evaporation. Efficient effect

Inactive Publication Date: 2014-04-23
YANTAI UNIV
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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.

Method used

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Effect test

Embodiment 1

[0036] like figure 1 , figure 2 As shown, under the action of the electric induction heating coil, the temperature inside the sulfur evaporator is 450°C, and the liquid sulfur at 140°C enters the evaporator through the sulfur feed port 5 and then evaporates and gasifies in the evaporator tube 4, and the raw material hydrogen is The evaporator tube 4 is preheated in the inner and outer tubes of different diameters, and mixed with sulfur vapor in the evaporator tube 4, the temperature rises, and enters the synthesis tower after reaching 450°C. The internal pressure of the evaporator is controlled at 0.25MPa, and the flow rate of liquid sulfur 0.54t / h, hydrogen volume 800Nm 3 / h, the power of the electric induction heating device 3 is 150kW. The hydrogen sulfide synthesis tower is equipped with two catalyst beds, and heat exchange coils 21 are installed in each layer. The reaction is carried out under high temperature and low pressure conditions. The reaction temperature is 450...

Embodiment 2

[0038] like figure 1 , figure 2 As shown, under the action of the electric induction heating coil, the temperature inside the sulfur evaporator is 500°C, and the liquid sulfur at 140°C enters the evaporator through the sulfur feed port 5 and then evaporates and gasifies in the evaporator tube 4, and the raw material hydrogen is The evaporator tube 4 is preheated in the inner and outer tubes of different diameters, and mixed with sulfur vapor in the evaporator tube 4, the temperature is raised, and it enters the synthesis tower after reaching 500 ° C. The internal pressure of the evaporator is 0.5 MPa, and the flow rate of liquid sulfur is 0.9 t / h, hydrogen volume 1500Nm 3 / h, the power of the electric induction heating device 3 is 170kW. The hydrogen sulfide synthesis tower is equipped with three-stage catalyst beds, and heat exchange coils 21 are arranged in each layer. The reaction is carried out under high temperature and low pressure conditions. The reaction temperature...

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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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J8/04C01B17/16
Inventor 李天文尚念刚刘坤孙烈刚丁海燕张天来
Owner YANTAI UNIV
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