A gas hydrogenation catalyst sulfidation and sulfidation waste gas treatment and discharge process

Abstract

The invention discloses a gas hydrogenation catalyst sulfidation and sulfidation waste gas treatment and discharge process. The intermediary between the catalyst and the external presulfided catalyst is used to solve the problems of concentrated heat and sulfur release during the activation of the external presulfurized catalyst and to avoid the reduction of the catalyst before sulfidation. The total number of intermediate layers is an odd number of 5 to 15, and the uppermost layer and the lowermost layer are catalysts. In the early stage of vulcanization, the first layer of catalyst is supplied by the system for sulfur and heat, and the remaining odd-numbered layers of catalysts are respectively provided by the upper layer. The pre-sulfurized catalyst outside the device supplies sulfur and heat; the sulfurized waste gas enters the heating furnace for combustion, and the flue gas is converted to SO by the dry flue gas desulfurization device. 2 Removal to 30mg / m 3 The following will be discharged after bleaching treatment. The vulcanization process is simple, there is no pollution and corrosion of equipment such as power, heat exchange, condensation and gas-liquid separation, the amount of vulcanizing agent is small, the vulcanization time is short, and the vulcanization effect is good. The investment cost of the entire sulfidation and sulfide exhaust gas treatment and discharge process is low, and the solid waste after flue gas desulfurization can be recycled, which 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...

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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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