Gas hydrogenation catalyst sulfurization and sulfurization waste gas treatment and emission process

Abstract

The invention discloses a gas hydrogenation catalyst sulfurization and sulfurization waste gas treatment and emission process, wherein the problems of concentrated heat release and sulfur release during activation of the out-of-device pre-sulfurized catalyst and reduction of the catalyst before sulfurization are solved by adopting the catalyst and the out-of-device pre-sulfurized catalyst. The total interlayer number is an odd number of 5-15, wherein the uppermost layer and the lowermost layer are both catalysts, in the initial stage of sulfurization, the first layer of catalyst is supplied with sulfur and heat by a system, and the rest odd layers of catalysts are respectively supplied with sulfur and heat by an out-of-reactor pre-sulfurized catalyst on the upper layer; the sulfuration waste gas enters a heating furnace to be combusted, SO2 in the flue gas is removed to 30 mg / m3 or below through a dry flue gas desulfurization device, and the flue gas is discharged after being subjectedto white smoke removal treatment. The sulfurization process is simple in flow, free of pollution and corrosion of power, heat exchange, condensation, gas-liquid separation and other equipment, smallin sulfurization agent dosage, short in sulfurization time and good in sulfurization effect. The whole sulfurization and sulfurization waste gas treatment and discharge process is low in investment cost, solid waste after flue gas desulfurization can be recycled, and the process is green and economical.

Description

technical field [0001] The invention relates to a gas hydrogenation catalyst sulfidation and sulfidation waste gas treatment and discharge process, which belongs to the field of coal chemical industry. Background technique [0002] my country is a big country of coke production, and a large amount of coke oven gas is produced as a by-product. The production of methanol / LNG from coke oven gas has a good application prospect. Methanol synthesis catalysts and methanation catalysts are used in the production of methanol and LNG. The active components are Cu and Ni respectively, which are easily deactivated by reaction with sulfide. Therefore, it is of great significance to remove various sulfides in coke oven gas. [0003] The sulfur content in coke oven gas is related to the total sulfur content of the coal charge. Generally, dry coal contains 0.5-1.2% (weight) of total sulfur, of which 20-45% is transferred to coke oven gas, and hydrogen sulfide accounts for the total sulfur...

AI Technical Summary

Problems solved by technology

[0015] Aiming at the deficiencies in the prior art, the present invention provides a gas hydrogenation catalyst sulfidation and sulfidation waste gas treatment and discharge process, which adopts intermediary installation between the catalyst and the pre-sulfurization catalyst outside the device to solve the problem of centralized heat release and sulfur release when the pre-sulfurization catalyst outside the device is activated And avoid the problem of the catalyst being reduced before sulfidation; the sulfidation process contains H 2 The S waste gas enters the heating furnace for combustion, and the heat is used for heating, and the flue gas is converted to SO by the dry flue gas desulfurization device. 2 Removal to 30mg / m 3 The following and discharged after bleaching treatment

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