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Safety interlock control method and system for slurry reactor hydrogen peroxide device oxidation tower

A safety interlocking, oxidation tower technology, applied in the control/regulation system, non-electric variable control, simultaneous control of multiple variables, etc., can solve the problems such as the interlocking control technology of the oxidation tower of the hydrogen peroxide device that has not been found, and achieve optimal production. Benefit, improve safety, prolong the effect of the start-up cycle

Active Publication Date: 2014-03-26
河北都邦石化工程设计有限公司
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AI Technical Summary

Problems solved by technology

The technology of interlocking control of the oxidation tower of the hydrogen peroxide plant has not been found so far

Method used

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  • Safety interlock control method and system for slurry reactor hydrogen peroxide device oxidation tower
  • Safety interlock control method and system for slurry reactor hydrogen peroxide device oxidation tower
  • Safety interlock control method and system for slurry reactor hydrogen peroxide device oxidation tower

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Embodiment Construction

[0019] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0020] The system for the safety interlock control of the oxidation tower of the slurry bed hydrogen peroxide device in the present invention, such as figure 2 As shown, it is mainly composed of a central processing unit 15, a pressure sensor 11, an oxygen content sensor 10, a No. 1 temperature sensor 12, a No. 2 temperature sensor 13, a No. 3 temperature sensor 14, a hydrogenation liquid feed valve 3, and a hydrogenation liquid feed pump 4 , air regulating valve 7, air cut-off valve 6 and emergency nitrogen filling valve 1. The pressure sensor is located at the oxidation tower top of the oxidation tower 8, the oxygen content sensor is installed at the tower top venting line 16, and No. 1 temperature sensor, No. 2 temperature sensor and No. 3 temperature sensor are respectively installed at the upper section, middle section and lower section of the oxidation tower. ...

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Abstract

The invention relates to a safety interlock control method and system for a slurry reactor hydrogen peroxide device oxidation tower. The system is composed of a pressure sensor, an oxygen content sensor, a first temperature sensor, a second temperature sensor, a third temperature sensor, a hydrogenated liquid feed valve, a hydrogenated liquid feed pump, an air regulating valve, an air shut-off valve and an emergency nitrogen charging valve. The method includes the control steps that first, set control values are input through a central processing unit; second, instructions of the central processing unit are measured; third, whether pressure, temperature and oxygen content measurement values exceed the set values or not are detected, if the pressure, temperature and oxygen content measurement values exceed the set values, the fourth step is executed, and if not, the second step is executed again; fourth, the hydrogenated liquid feed valve, the hydrogenated liquid feed pump, the air shut-off valve and the air regulating valve are closed, and the emergency nitrogen charging valve is opened; fifth, process treatment is performed, faults are removed, a manual reset button is started, and the second step is executed again. With the method, interlocking among temperature, pressure and oxygen content measurement instruments, the hydrogenated liquid feed valve, an air valve and a nitrogen valve is achieved through the central processing unit, and production safety of hydrogen peroxide is improved.

Description

technical field [0001] The invention belongs to the technical field of chemical automation control, and relates to a method and system for safety interlock control of an oxidation tower of a slurry bed hydrogen peroxide device. Background technique [0002] The oxidation reaction unit is one of the main production processes of the hydrogen peroxide plant. Under a certain temperature and pressure, the hydrogen anthraquinone and air are countercurrently contacted in the oxidation tower and undergo an oxidation reaction to generate anthraquinone and hydrogen peroxide. Due to the presence of heavy aromatics in the medium, an explosion will occur when the oxygen content reaches the explosive limit. In the production process, if the temperature, pressure and oxygen content exceed the standard, it will cause an explosion. It is necessary to cut off the material in time at the same time, and fill a large amount of nitrogen into the oxidation tower to avoid accidents such as explosi...

Claims

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Application Information

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IPC IPC(8): G05D27/02
Inventor 申云彩
Owner 河北都邦石化工程设计有限公司
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