Sulfur recovery method and equipment in carbon disulfide production

Abstract

A method and equipment for recovering sulfur in the production of carbon disulfide. After the high-temperature gas produced by the oxygen-deficient combustion of the hydrogen sulfide-containing acid gas is condensed and separated out of the sulfur, the temperature is raised and sent to the upper part to be filled with an oxygen-leakage protection type catalyst, and the lower part is filled with a hydrolysis catalyst for a first-level reaction. After the reaction, the gas is condensed to separate the sulfur and then heated again and sent to the upper part of the secondary reactor filled with the hydrolysis catalyst, and the lower part is filled with the secondary reactor of the hydrogenation catalyst. Under the action of selective oxidation catalyst, H 2 S is oxidized to S, and the exhaust gas is condensed to separate the sulfur. Using the configuration of "burner + primary and secondary reactors + selective oxidation reactor", the total sulfur recovery rate is increased to more than 98%, and the pollutant SO is reduced while producing more sulfur. 2 The concentration entering the desulfurization unit reduces the difficulty of subsequent exhaust gas treatment, and the return on investment is higher. After the tail gas is desulfurized by wet method, the SO in the tail gas is finally discharged 2 Content<100mg / Nm 3 .

Description

technical field [0001] The invention relates to a sulfur recovery technology, in particular to a sulfur recovery method and equipment in the production of carbon disulfide. Background technique [0002] Carbon disulfide is an important chemical raw material. The raw material routes for producing carbon disulfide mainly include charcoal-sulfur method, coke-sulfur method, natural gas-sulfur method, etc. Although the first two methods have less equipment investment and shorter construction period However, the reaction retort has the disadvantages of short service life, low fuel utilization rate, large consumption of raw materials, large floor area, poor working conditions, low labor productivity and heavy pollution, etc., which have been banned by the state. Using sulfur and methane (or coal bed methane) as raw materials to produce carbon disulfide has the characteristics of good working conditions, high labor productivity, small equipment footprint, and high degree of automati...

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to overcome the defect of the low total sulfur recovery rate of the traditional three-stage Claus sulfur recovery technology, and provide an improved sulfur recovery method and equipment in the production of carbon disulfide

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