Hydrogenation catalytic deoxidation device and method for testing performance of hydrogenation deoxidation catalyst

Abstract

The invention discloses a method for testing performance of a hydrogenation deoxidation catalyst. According to the method, an online monitoring and interlocking system is arranged on a hydrogenation catalytic deoxidation device to monitor the change of oxygen content in real time, and the hydrogen flux is changed according to the change of the oxygen content, so that the reaction proportion of hydrogen and oxygen is reasonable; and meanwhile, after the reaction is finished, by monitoring the change of the oxygen content, the performance of the hydrogenation deoxidation catalyst can be evaluated.

Description

technical field [0001] The invention belongs to the technical field of catalytic deoxygenation, and in particular relates to a hydrocatalytic deoxygenation device and a method for evaluating the performance of a hydrodeoxygenation catalyst. Background technique [0002] There are often some oxygen-containing mixed gases in petrochemical processes. Due to the presence of oxygen, the mixed gases cannot be recycled, and the risk of gas phase explosion is increased (such as the circulating propylene gas in the production of propylene oxide by hydrogen peroxide method). In the production process of high-purity gas, there is also a situation where the mixed gas contains trace oxygen, so that the gas purity cannot reach the expected index. [0003] In the face of this situation, catalytic deoxygenation is mostly used to remove trace amounts of oxygen. Under the catalytic action of the deoxygenation catalyst, the oxygen in the environment is catalyzed with hydrogen, carbon monoxide ...

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Problems solved by technology

[0004] During the use of the hydrodeoxygenation catalyst, it is necessary to accurately control the amount of hydrogen added to prevent the generation of new impurity gases due to the addition of too much hydrogen; in addition, it is also very important to evaluate the use conditions, service life and activity of the hydrodeoxygenation catalyst. When the activity of the deoxidation catalyst drops to a certain level, it must be replaced, otherwise, it is difficult to achieve the deoxidation effect

At this stage, there is a lack of devices and methods that can accurately control the reaction ratio of hydrogen and oxygen, and change the flux of hydrogen at any time according to the oxygen content; there is also a lack of devices and methods for online measurement of hydrodeoxygenation efficiency and timely detection of activity of hydrodeoxygenation catalysts

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