Sulfuryl fluoride reaction device

Abstract

The invention provides a sulfuryl fluoride reaction device which comprises a reaction chamber and a heat exchange chamber, and the reaction chamber and the heat exchange chamber are arranged at an interval; a gas inlet of the heat exchange chamber is connected with a gas outlet of one reaction chamber, and a gas outlet of the heat exchange chamber is connected with a gas inlet of the other reaction chamber; a filler layer is arranged in the reaction chamber and is detachably connected with the inner wall of the reaction chamber; a vertical heat exchange pipe is arranged in the heat exchange chamber, the top end of the heat exchange pipe is connected with an air inlet pipe, and the bottom end of the heat exchange pipe is connected with an air outlet pipe; filter plates are installed between the vertical heat exchange pipes and detachably connected with the outer walls of the vertical heat exchange pipes. When the device is used for synthesizing sulfuryl chloride, the influence on the activity of the filler layer due to over-high temperature of process gas can be effectively avoided, and the yield of sulfuryl fluoride is ensured; the device can effectively reduce particle impurities in process gas, prevents the particle impurities from entering the next reaction chamber to influence the composition and structure of the filler, ensures consistent quality of sulfuryl fluoride produced by using the synthesis device, and ensures the product quality.

Description

technical field [0001] The invention relates to the technical field of sulfuryl fluoride production equipment, in particular to a sulfuryl fluoride reaction device. Background technique [0002] Sulfuryl fluoride is a broad-spectrum insecticide with strong permeability, which makes it have the advantages of less dosage, fast insecticidal speed and low residue in the insecticidal process. As people's awareness of environmental protection increases, Research on sulfuryl fluoride is increasing. [0003] There are many synthetic techniques for sulfuryl fluoride, among which the route to synthesize sulfuryl fluoride with hydrofluoric acid, chlorine and sulfur dioxide as starting materials and activated carbon as a catalyst is the most commonly used; in this synthetic route, hydrofluoric acid is first used to activate the catalyst , and then gasify hydrofluoric acid, chlorine and sulfur dioxide and preheat them into the reaction device to carry out the synthesis reaction of sulfu...

AI Technical Summary

Problems solved by technology

The reaction device currently used for sulfuryl fluoride is an adiabatic fixed-bed reactor, and the reaction device mainly has the following problems during use: First, the synthesis reaction is an exothermic reaction, and as the synthesis process progresses, the temperature of the output gas will decrease. Gradually increasing, the high temperature will affect the activity of activated carbon, and then affect the yield of sulfuryl fluoride; the second is that the process output gas will inevitably carry particulate impurities. Combined, resulting in a decrease in the activity of activated carbon and affecting the yield of sulfuryl fluoride

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