Pilot test device for evaluating performance of low-carbon hydrocarbon oxidation catalyst

Abstract

The invention provides a pilot test device for evaluating the performance of a low-carbon hydrocarbon oxidation catalyst. The device comprises a raw material preparation system, a reaction system, anabsorption system, a lean recycle gas component regulation and control system, a cyclic compression system and an online analysis system, wherein the raw material preparation system, the reaction system, the absorption system, the lean recycle gas component regulation and control system and the cyclic compression system are connected in sequence and are combined into a closed loop. By adopting thetest device, the problem that an existing pilot test device for the performance of the low-carbon hydrocarbon oxidation catalyst in the gas circulation type process cannot effectively adjust accumulated COx carbon oxides in recycle gas while ensuring the process conditions such as device pressure flow and the like are stable is well solved, the accurate and stable evaluation of the catalyst is achieved, and an important guarantee is provided for the catalyst sample from a small test to industrialization.

Description

technical field [0001] The invention belongs to the technical field of catalyst research and development process, and in particular relates to a pilot test device for evaluating the performance of a low-carbon hydrocarbon oxidation catalyst. Background technique [0002] The catalytic oxidation process of light hydrocarbons has important economic value. For example, ethylene oxide produced by ethylene epoxidation is used in the production of chemical fiber raw material ethylene glycol, acrolein and acrylic acid produced by oxidation of propane or propylene are used in pesticides and coatings, and methacrylic acid produced by oxidation of isobutylene can be used in production plexiglass. Other new methods and new processes for the preparation of high value-added chemicals by catalytic oxidation of low-carbon hydrocarbons have also been research hotspots. For all these, the technical core of its production process is the low-carbon hydrocarbon oxidation catalyst. [0003] T...

AI Technical Summary

Problems solved by technology

However, due to the limitations of investment, raw material source and production area, it is unrealistic for the pilot plant to be equipped with a decarbonization separation unit. Therefore, if the pilot plant also adopts a cycle process in order to obtain catalyst performance evaluation results that are closer to industrial operating conditions, how can it be used? It has become a key technical problem to ensure the accuracy and stability of device evaluation data while effectively controlling the content of carbon oxides.

[0005] Chinese patent document CN205426877U provides a kind of original particle size catalyst evaluation device, this device is to return part of the gas after the reaction to the device, and discharge some gas, but this scheme does not disclose how to measure the circulating gas accurately after discharging part of the gas Therefore, it cannot achieve accurate and stable device evaluation data and effectively control the content of carbon oxides

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