Process for treating and recycling waste sulfur in chloride

Abstract

The invention discloses a process for treating and recycling waste sulfur in chloride. The process includes a step 1) of adding solid sulfur waste residue in a melting reaction kettle, leading 4 kg ofsteam in to raise the temperature to 135 DEG C until the sulfur waste residue is dissolved into a liquid, and controlling the temperature to be 125 DEG C; a step 2) of adjusting the PH of sulfur liquid to neutrality, adding a catalyst, keeping the sulfur liquid temperature at 125 DEG C, and pumping the sulfur liquid into a heat insulation kettle through a submerged pump; a step 3) of heating thesulfur liquid in the heat insulation kettle from 125 DEG C to 160 DEG C, wherein the heating time is 30 min; after heat insulation for 1 h, quickly heating to 190 DEG C, and after heat insulation for1 h, heating to 210 DEG C; performing heat insulation for 2 h, until a catalyst reacts, and discharging hydrogen sulfide gas; after the catalyst reaction is completed, heating to 230 DEG C; performingheat insulation for 2 h and then heating to 260 DEG C, and placing the product in a sublimation kettle; a step 4) of heating the sublimation kettle to 450 DEG C, and discharging liquid after the gassulfur passes a condenser; a step 5) of causing the liquid sulfur to enter a sulfur storage tank, and performing slicing and packaging. According to the process, the purity of the recycled sulfur is high.

Description

technical field [0001] The invention relates to a process for treating and recovering waste sulfur in chlorides, and belongs to the technical field of sulfur recovery. Background technique [0002] Sulfur contains sulfur organic matter, ethyl chloride, organic matter containing chlorine and sulfur (easy to decompose at high temperature), and inorganic impurities (mixed in sulfur). At present, for the recovery of sulfur, the boiling point of each impurity is different at different temperatures to separate and remove impurities. This technology has the following disadvantages: 1. The impurities wrapped in the sulfur are difficult to remove, and there will be peculiar smell and side reactions when using recycled sulfur; 2. Chlorine-containing and sulfur-containing gases generated by the decomposition of organic matter during the separation of impurities , The working site environment is harsh, causing pollution to the environment; 3, the purity of sulfur does not meet the requ...

AI Technical Summary

Problems solved by technology

This technology has the following disadvantages: 1. The impurities wrapped in the sulfur are difficult to remove, and there will be peculiar smell and side reactions when using recycled sulfur; 2. Chlorine-containing and sulfur-containing gases generated by the decomposition of organic matter during the separation of impurities , the work site environment is harsh, causing pollution to the environment; 3. The purity of sulfur does not meet the requirements

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