Method and device for removing hydrogen sulfide in gas phase through oxidation

Abstract

The invention discloses a method and a device for removing hydrogen sulfide in a gas phase through oxidation. The device comprises a settling tank, an extracting pump, a filtering membrane, an ultra gravity rotary packed bed, a separator, a balanced tank and a regeneration ultra gravity machine, wherein the extracting pump and the filtering membrane are sequentially connected between the settling tank and the ultra gravity rotary packed bed; the balanced tank is connected between the settling tank and the separator; the ultra gravity rotary packed bed is communicated with the balanced tank; the settling tank and the separator are sequentially connected with the extracting pump and the filtering membrane; and the extraction pump and the filtering membrane are sequentially connected between the settling tank and the regeneration ultra gravity machine. A technology flow of pre-oxidation sweetening, ultra oxidation sweetening, sulfur settlement, and regeneration is adopted for the method. According to the method and the device, the ultra gravity machine is adopted to replace the traditional low-mass-transfer-efficiency reactor, and the ultra gravity rotary packed bed reactor is adopted both in hydrogen sulfide oxidation and catalyst regeneration, the process mass transfer efficiency is intensified greatly, and the regeneration time oxidation sulfur removing time and the desulfurizing agent regenerating time are shortened.

Description

technical field [0001] The invention relates to the field of gas purification, in particular to a method and device for oxidizing and removing hydrogen sulfide in gas phase. Background technique [0002] Hydrogen sulfide (H 2 S) is a toxic and harmful gas. It is an industrial waste gas produced with industrial production. It comes from oil refineries, natural gas purification plants, petrochemical plants, gas purification plants, nitrogen fertilizer plants, smelters, paper mills, printing and dyeing plants, Tannery, pesticide factory and other industries. The presence of hydrogen sulfide in the gas can produce various harmful effects. For example, oil and gas pipelines are broken due to the long-term corrosion of hydrogen sulfide acid; also, in the ammonia synthesis industry, the presence of hydrogen sulfide poisons industrial catalysts. Containing 0.10% hydrogen sulfide in the air will cause poisoning symptoms such as headache and dizziness, and excessive hydrogen sulfid...

AI Technical Summary

Problems solved by technology

Chinese utility model patent 200620023555.9 reports a device for removing hydrogen sulfide from gas by supergravity. The process is basically similar to that reported in Chinese invention patent 200710101508.0, but the desulfurization principle is a wet catalytic oxidation desulfurization method; although the size of the absorption equipment is reduced, the The subsequent regeneration equipment is huge and inefficient, and an external demister is used

The high-gravity rotating packed bed is used as the gas-liquid contact equipment for complex iron desulfurization. The sulfur generated during the desulfurization process is easy to accumulate in the rotor packing, causing the outer layer of the rotor to be blocked, especially when the concentration of hydrogen sulfide in the gas phase is high. more serious

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