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Control method for preventing hydrogenation tail gas blast in anthraquinone method preparation of hydrogen peroxide

A control method and technology of hydrogen peroxide, applied in chemical instruments and methods, peroxide/peroxyhydrate/peroxyacid/superoxide/ozone, inorganic chemistry, etc., can solve the problem of low safety factor, etc. The effect of ensuring safety and good technical effect

Inactive Publication Date: 2015-01-28
CHINA PETROLEUM & CHEM CORP +1
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Problems solved by technology

[0004] The technical problem to be solved by the present invention is the problem of low safety factor in the prior art, and a new control method for preventing hydrogenation tail gas explosion in the anthraquinone legal hydrogen peroxide process is provided

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  • Control method for preventing hydrogenation tail gas blast in anthraquinone method preparation of hydrogen peroxide

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Embodiment 1

[0013] Such as figure 1 In the process flow shown, the outlet pipeline at the top of the hydrogenation reactor is connected to the gas-liquid separator, and the gas-phase outlet pipeline at the top of the gas-liquid separator is equipped with an oxygen content online detector, and an alarm value and an interlock value are set; The content on-line detector uses a thermomagnetic method to measure the oxygen content. When the oxygen content of the gas phase outlet at the top of the gas-liquid separator exceeds the alarm value (0.5%), reduce or cut off the hydrogenation reactor working liquid feed; when the oxygen content of the gas phase outlet at the top of the gas-liquid separator exceeds the interlock value (2.0%) , cut off the hydrogenation reactor working fluid feed, and add nitrogen to the gas-liquid separator to dilute the oxygen content. This measure can effectively guarantee the safety of the hydrogenation reaction system of the hydrogen peroxide plant.

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Abstract

The invention relates to a control method for preventing hydrogenation tail gas blast in anthraquinone method preparation of hydrogen peroxide. The control method mainly solves the problem of a low safety factor of the prior art. According to the control method, an outlet pipe at the top of a hydrogenation reactor is connected to a gas-liquid separator, a gas outlet pipe at the top of the gas-liquid separator is provided with an oxygen content on-line detector, an alarm value and an interlocking value are set, when oxygen content at a gas outlet at the top of the gas-liquid separator is greater than the alarm value, a work liquid fed into the hydrogenation reactor is reduced or the work liquid feeding process is stopped and when oxygen content at the gas outlet at the top of the gas-liquid separator is greater than the interlocking value, the work liquid feeding process on the hydrogenation reactor is stopped and inert gas is supplied for the gas-liquid separator to dilute oxygen. Therefore, the control method solves the existing problem and can be used for controlling hydrogenation tail gas blast in anthraquinone method preparation of hydrogen peroxide.

Description

technical field [0001] The invention relates to a control method for preventing hydrogenation tail gas explosion in an anthraquinone process for producing hydrogen peroxide. Background technique [0002] Hydrogen peroxide is one of the main basic chemical products in the world. At present, the anthraquinone hydrogen peroxide production process is its main production method. This technology has become mature. CN201410006659.8 discloses an anthraquinone hydrogen peroxide production device. The hydrogen peroxide production device consists of It consists of a hydrogenation reaction unit, an oxidation reaction unit and an extraction separation unit. Manufacturers at home and abroad are still researching and improving individual technical links of the process. The improvement content is mainly aimed at the catalyst and working medium in the hydrogenation process, as well as the optimization of the complete production process. The main purpose is to increase the hydrogen peroxide p...

Claims

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Application Information

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IPC IPC(8): C01B15/023
CPCC01B15/023
Inventor 徐伟张帆费轶张晨石宁
Owner CHINA PETROLEUM & CHEM CORP
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