Vulcanization method for hydrogenation catalyst and application thereof

Abstract

The invention relates to a method for pre-vulcanizing a hydrogenation catalyst outside a hydrogenation reactor and activating the hydrogenation catalyst in the hydrogenation reactor. The method comprises the following steps of: (1) pre-vulcanizing the catalyst outside the hydrogenation reactor; (2) passivating the catalyst; and (3) reactivating the catalyst. A vulcanization method for the hydrogenation catalyst provided by the invention can guarantee high vulcanization rate of the catalyst; the passivated catalyst does not have abnormal odor and does not release hydrogen sulfide gas when being in contact with air or vapor; and the catalyst does not spontaneously combust and is not required to be protected by inert gas. Storage, transportation and filling methods and the like of the catalyst are simple and convenient. The catalyst can reach an activated state in a few hours during reactivation of an atmosphere containing a vulcanizing agent and hydrogen, is short in processing time, convenient to operate and has high catalytic performance.

Description

technical field [0001] The invention relates to a method for sulfiding a hydrogenation catalyst and the application of the catalyst. The method includes ex-situ presulfidation of the catalyst, passivation, and activation within the hydrogenation reactor. The catalyst sulfurized by this method is applied to hydrogenation removal of oxygen and nitrogen oxides in dry gas. Background technique [0002] Hydrogenation catalysts include hydrorefining catalysts, hydrotreating catalysts, hydroprotecting agents, and hydrocracking catalysts, etc. These hydrogenation catalysts usually contain metal elements from Group VIB and Group VIII, and are loaded in the form of metal oxidation states selected from heat-resistant on an inorganic oxide support. The active metal component of the hydrogenation catalyst prepared by the common method is in an oxidized state, and the active metal of the oxidized state catalyst needs to be converted into a sulfurized state to have a higher catalytic act...

AI Technical Summary

Problems solved by technology

CN1400056A Coat the presulfurized catalyst containing sulfidation agent with an oxygen-containing organic matter containing at least 16 carbon atoms, treat it above 175°C for a period of time, and then activate it with hydrogen to reduce the self-heating of the catalyst, but this cannot completely solve the sulfidation state The self-heating problem of the catalyst, and the storage, transportation and loading of the catalyst still have certain problems

CN101492607A adopts the method of presulfurizing only a part of the required catalysts, and the presulfurized hydrogenation catalysts are mixed with the non-presulfurized hydrogenation catalysts or packed in layers in the reactor, and when the activation is started, all the catalysts are Sulfidation treatment, this treatment method can alleviate the self-heating problem of the catalyst, but there is a problem of whether all catalysts can be uniformly and effectively vulcanized

However, there are certain problems in the transportation and loading of the catalyst. At the same time, because the catalyst contains a large amount of free water, it brings trouble to the start of work.

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