Catalyst protector for hydrogen peroxide production by anthraquinone method

Abstract

The invention discloses an anthraquinone method hydrogen peroxide production catalyst protector, relates to the technical field of anthraquinone method hydrogen peroxide production, and especially relates to a catalyst protector. The catalyst proctor comprises a shell, the shell is in sealed connection with an upper manhole and a lower manhole, and the upper manhole is arranged over the lower manhole; and the internal of the shell is fixedly connected with a liquid collector, the liquid collector is provided with an elongate hole, a protection agent is arranged in the shell, the protection agent is arranged over the liquid collector, the shell over the protection agent is provided with a transversely-arranged liquid inlet tube, the liquid inlet is fixedly connected with the shell, the liquid inlet tube in the shell is provided with a dispersion hole, and the bottom of the shell is fixedly connected with a liquid outlet tube communicated with the inner cavity of the shell. The catalyst proctor purifies and filters a regeneration liquid to protect a catalyst.

Description

technical field [0001] The invention relates to the technical field of anthraquinone hydrogen peroxide production, in particular to a catalyst protection device. Background technique [0002] The existing process flow is that the regeneration liquid at the outlet of the regeneration liquid pump directly enters the hydrogenation reactor, and the hydrogenation reactor is filled with a precious metal catalyst, and the hydrogenation reaction is carried out with hydrogen gas and 2-ethylanthraquinone in the regeneration liquid under a certain pressure and temperature , to generate 2-ethylhydroanthraquinone, the following defects exist in the current process: [0003] 1. The regeneration liquid has not been purified, so that the content of organic impurities in the regeneration liquid is high, and the content of organic impurities in the product is high, resulting in an increase in the total organic carbon content of the product. [0004] 2. The toxic substances in the regeneratio...

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Problems solved by technology

[0003] 1. The regeneration liquid has not been purified, so that the content of organic impurities in the regeneration liquid is high, and the content of organic impurities in the product is high, resulting in an increase in the total organic carbon content of the product

[0004] 2. The toxic substances in the regeneration solution are not purified, which makes the precious metal catalyst in the hydrogenation reactor easily poisoned, and reduces the activity of the precious metal catalyst or even loses its activity.

[0005] 3. Impurities such as colloids and solid particles in the regeneration liquid have not been purified. As the regeneration liquid enters the precious metal catalyst in the hydrogenation reactor, the micropores of the catalyst are blocked, the activity of the precious metal catalyst decreases, and the regeneration cycle of the precious metal catalyst is shortened. Reduced service life

[0006] 4. After the colloid and solid particle impurities in the regeneration liquid enter the precious metal catalyst layer, the catalyst will be scarred, and the resistance of the hydrogenation reactor will increase, resulting in a decrease in the system load and affecting the output of the product

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