Efficient hydrogenation process and system for producing hydrogen peroxide through anthraquinone method

A hydrogen peroxide, anthraquinone method technology, applied in the direction of peroxide/peroxyhydrate/peroxyacid/superoxide/ozone, inorganic chemistry, chemical instruments and methods, etc., can solve the problem of low diffusion mass transfer rate, The problems of low catalyst space velocity and low hydrogenation reaction rate can achieve the effect of reducing diffusion and mass transfer resistance, high catalyst utilization rate, and improving reaction rate.

CN109678121AActive Publication Date: 2019-04-26CHINA PETROLEUM & CHEM CORP +1
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2019-04-26

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Abstract

The invention discloses an efficient hydrogenation process and system for producing hydrogen peroxide through an anthraquinone method. The efficient hydrogenation process comprises the following contents: (1) total hydrogen of the hydrogenation process is divided into two paths, namely hydrogen I and hydrogen II; the hydrogen I and a working solution enter hydrogen dissolving equipment, and thus the hydrogen I is dissolved in the working solution to obtain a hydrogen-dissolved working solution; (2) the hydrogen-dissolved working solution and the hydrogen II enter a mixer containing a ceramic membrane tube bundle, wherein the hydrogen-dissolved working solution enters the shell side outside the tube bundle, the hydrogen II enters the tube pass side inside the tube bundle, the hydrogen II radially passes through the tube wall of the ceramic membrane tube bundle to be dispersed into nano-sized / micron-sized minute bubbles, and the nano-sized / micron-sized minute bubbles act with the hydrogen-dissolved working solution on the shell side to obtain a microemulsion fluid; and (3) the microemulsion fluid enters a liquid phase hydrogenation reactor filled with a hydrogenation catalyst, a hydrogenation reaction is conducted, and a hydrogenation reaction product enter into the next procedure. According to the efficient hydrogenation process, by controlling the two different states of hydrogen in the working solution, the whole hydrogenation reaction is conducted in the liquid phase, the uniformity of the reaction is ensured while the hydrogenation reaction efficiency is improved, the side reaction is effectively controlled, and the anthraquinone consumption is greatly lowered.
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Description

technical field

[0001] The invention relates to a high-efficiency hydrogenation process and system in the process of producing hydrogen peroxide by anthraquinone method. Background technique

[0002] In the process of producing hydrogen peroxide by anthraquinone method, the hydrogenation process of anthraquinone hydrogenation is the core unit of the whole hydrogen peroxide production process. The result of hydrogenation reaction directly affects the quality level of working fluid, product concentration and production scale of the device. The main indicators of inferiority are technical indicators such as hydrogen efficiency, number of side reactions, and catalyst production capacity per ton.

[0003] The general anthraquinone hydrogenation reaction in the prior art is a gas-liquid-solid three-phase trickle bed reaction. The reaction temperature is generally 45-75°C, the reaction pressure is generally 0.2-0.4MPa, the gas is the continuous phase, and the liquid passes through...

Examples

Embodiment 1

[0041] The hydrogenation reaction process and the liquid phase hydrogenation reaction system of the present invention are used to carry out the anthraquinone hydrogenation process. Hydrogenation reactor filling catalyst 0.072m 3 , first hydrogen 13.66Nm 3 / h is divided into two routes of hydrogen I and hydrogen II, and the hydrogen I is 0.07Nm 3 / h, using SMK static mixer structure, the material residence time is 2.5 minutes; hydrogen Ⅱ is 13.59Nm 3 / h, using a shell-and-tube inorganic membrane tube bundle with a pore size of 5nm; 3 / h and hydrogen I0.07Nm 3 / h is introduced into a static mixer and dissolved under a pressure of 5.0MPa to form a working fluid material containing saturated dissolved hydrogen; the working fluid containing saturated dissolved hydrogen is mixed with hydrogen II 13.59Nm 3 / h is introduced into the hydrogen-oil mixer, and the hydrogen-dissolving working fluid is introduced into the shell side of the membrane tube bundle; hydrogen gas II is introd...

Embodiment 2

[0044] The hydrogenation reaction process and the liquid phase hydrogenation reaction system of the present invention are used to carry out anthraquinone hydrogenation process one. Hydrogenation reactor filling catalyst 0.093m 3 , first hydrogen 13.66Nm 3 / h is divided into two routes of hydrogen I and hydrogen II, and the hydrogen I is 0.42Nm 3 / h, using a static mixer structure with spiral plates, the material residence time is 3.5 minutes; the hydrogen gas II is 13.24Nm3 / h, using a shell-and-tube inorganic membrane tube bundle with a pore size of 5nm; 3 / h and hydrogen I0.42Nm 3 / h is introduced into a static mixer and dissolved under a pressure of 9.9MPa to form a hydrogen-dissolving working fluid; the hydrogen-dissolving working fluid is mixed with hydrogen II 13.24Nm 3 / h is introduced into the hydrogen-oil mixer, and the hydrogen-dissolving working fluid is introduced into the shell side of the membrane tube bundle; hydrogen II is introduced into the tube side of the...