CN104317317A - Method for controlling the content of hydrogen peroxide in working solution for technology of preparing hydrogen peroxide by anthraquinone process - Google Patents
Method for controlling the content of hydrogen peroxide in working solution for technology of preparing hydrogen peroxide by anthraquinone process Download PDFInfo
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Abstract
The invention relates to a method for controlling the content of hydrogen peroxide in working solution for the technology of preparing hydrogen peroxide by an anthraquinone process, and mainly aims to solve the problem that the coefficient of safety is low in the prior art. The method for controlling the content of hydrogen peroxide in working solution for the technology of preparing hydrogen peroxide by an anthraquinone process adopts the following technical scheme: extraction raffinate from an extraction tower enters a working solution storage tank, the content of hydrogen peroxide is measured by an on-line hydrogen peroxide monitor on the working solution storage tank, and an alarm value and an interlocking value are set; when the content of hydrogen peroxide exceeds the alarm value, an alarm alarms, and new working solution is injected into the working solution storage tank; and when the content of hydrogen peroxide exceeds the interlocking value, the working solution in the storage tank returns to the extraction tower through a return pipeline at the bottom of the storage tank, a feed pipeline for a working fluid dehydrogenation process in the storage tank is cut off, and new working solution is injected into the working solution storage tank. By adopting the technical scheme, the problem is well solved. The method of the invention can be used for controlling the content of hydrogen peroxide in working solution for the technology of preparing hydrogen peroxide by an anthraquinone process.
Description
Technical field
The present invention relates to the control method of content of hydrogen peroxide in a kind of anthraquinone producing hydrogen peroxide technological work liquid.
Background technology
Hydrogen peroxide is one of main Essential Chemistry product in the world, at present, anthraquinone Hydrogen Peroxide Production technique is its main production process, this technology has become ripe, but manufacturer is still studying indivedual sport technique segments of technique and is improving both at home and abroad, improve content mainly for the catalyzer in hydrogenation process and actuating medium, and the aspect such as complete production process optimization, its object mainly improves the hydrogen peroxide manufacture ability of unit volume working fluid.But this technique relate to hydrogenation and oxidation two processes simultaneously, and the less stable of product hydrogen peroxide, easily decompose, cause the danger of technique higher, industrial accident happens occasionally.Device after completion of the reaction, need by extraction, organic working fluid to be separated with hydrogen peroxide, CN201110186026.6 relates to a kind of extracting process of anthraquinone legal system hydrogen peroxide process, and the oxidation solution containing hydrogen peroxide directly enters novel compositions packed extraction tower from gas-liquid separator.
Working fluid after separation gets back to hydrogenation process, continues to participate in circular response, if deal with improperly, in working fluid, hydrogen peroxide residual amount is too much, and may produce dangerous with hydrogenation process by it, safety coefficient is lower.
The present invention solves this problem targetedly.
Summary of the invention
Technical matters to be solved by this invention is the problem that in prior art, safety coefficient is low, provides the control method of content of hydrogen peroxide in a kind of anthraquinone producing hydrogen peroxide technological work liquid newly.The method is used for, in the control of content of hydrogen peroxide in anthraquinone producing hydrogen peroxide metallization processes working fluid, having the advantage that safety coefficient is high.
For solving the problem, the technical solution used in the present invention is as follows: the control method of content of hydrogen peroxide in a kind of anthraquinone producing hydrogen peroxide technological work liquid, raffinate from extraction column enters working fluid storage tank, measure content of hydrogen peroxide by the hydrogen peroxide on-line computing model on working fluid storage tank, and set alarming value and interlocking value; When content of hydrogen peroxide exceedes alarming value, alarm equipment alarm, and inject new working fluid to working fluid storage tank; When content of hydrogen peroxide exceedes interlocking value; Working fluid in storage tank returns extraction column by the reflux pipeline of tank bottom, cuts off working fluid in storage tank and removes the feeding line of hydrogenation process, inject new working fluid simultaneously to working fluid storage tank.
In technique scheme, preferably, in described new working fluid, content of hydrogen peroxide is less than raffinate.
In technique scheme, preferably, described hydrogen peroxide on-line computing model adopts electrochemical method to measure content of hydrogen peroxide.
In technique scheme, preferably, described new working fluid injects pipeline, working fluid reflux pipeline and working fluid and goes the feeding line of hydrogenation process to be provided with valve, automatically opens or closes during interlocking.
The present invention is by the content of hydrogen peroxide in on-line monitoring working fluid storage tank, with warning, chain control method, can ensure that the content of hydrogen peroxide in working fluid does not exceed standard, avoid the condition that there is hydrogen peroxide during hydrogenation, the safety of the anthraquinone oxydol production apparatus reactive system of effective guarantee, achieves good technique effect.
Accompanying drawing explanation
Fig. 1 is the schematic flow sheet of the method for the invention.
In Fig. 1,1 is raffinate feedstock; 2 is new working fluid; 3 for removing hydrogenation process feeding line; 4 is reflux pipeline; 5 is hydrogen peroxide on-line computing model; 6 is alarm; 7 is interlocking; 8 is working fluid storage tank.
Below by embodiment, the invention will be further elaborated, but be not limited only to the present embodiment.
Embodiment
[embodiment 1]
Raffinate from extraction column enters working fluid storage tank, measures content of hydrogen peroxide, and set alarming value and interlocking value by the hydrogen peroxide on-line computing model on working fluid storage tank; Described hydrogen peroxide on-line computing model adopts electrochemical method to measure content of hydrogen peroxide.
Described new working fluid injects pipeline, working fluid reflux pipeline and working fluid and goes the feeding line of hydrogenation process to be provided with valve, automatically opens or closes during interlocking.When content of hydrogen peroxide exceedes alarming value (0.03wt%), alarm equipment alarm, and inject new working fluid (new working fluid content of hydrogen peroxide is lower than 0.001wt%) to working fluid storage tank; When content of hydrogen peroxide exceedes interlocking value (0.1wt%); Working fluid in storage tank returns extraction column by the reflux pipeline of tank bottom, cuts off working fluid in storage tank and removes the feeding line of hydrogenation process, inject new working fluid simultaneously to working fluid storage tank.This measure effectively can ensure the safety of hydrogen peroxide plant reactive system.
Claims (4)
1. the control method of content of hydrogen peroxide in an anthraquinone producing hydrogen peroxide technological work liquid, raffinate from extraction column enters working fluid storage tank, measure content of hydrogen peroxide by the hydrogen peroxide on-line computing model on working fluid storage tank, and set alarming value and interlocking value; When content of hydrogen peroxide exceedes alarming value, alarm equipment alarm, and inject new working fluid to working fluid storage tank; When content of hydrogen peroxide exceedes interlocking value; Working fluid in storage tank returns extraction column by the reflux pipeline of tank bottom, cuts off working fluid in storage tank and removes the feeding line of hydrogenation process, inject new working fluid simultaneously to working fluid storage tank.
2. the control method of content of hydrogen peroxide in anthraquinone producing hydrogen peroxide technological work liquid according to claim 1, is characterized in that in described new working fluid, content of hydrogen peroxide is less than raffinate.
3. the control method of content of hydrogen peroxide in anthraquinone producing hydrogen peroxide technological work liquid according to claim 1, is characterized in that described hydrogen peroxide on-line computing model adopts electrochemical method to measure content of hydrogen peroxide.
4. the control method of content of hydrogen peroxide in anthraquinone producing hydrogen peroxide technological work liquid according to claim 1, it is characterized in that described new working fluid injects pipeline, working fluid reflux pipeline and working fluid and goes the feeding line of hydrogenation process to be provided with valve, automatically open or close during interlocking.
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| CN201410499550.2A CN104317317B (en) | 2014-09-25 | 2014-09-25 | The control method of content of hydrogen peroxide in anthraquinone producing hydrogen peroxide technological work liquid |
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| CN201410499550.2A CN104317317B (en) | 2014-09-25 | 2014-09-25 | The control method of content of hydrogen peroxide in anthraquinone producing hydrogen peroxide technological work liquid |
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| CN104317317A true CN104317317A (en) | 2015-01-28 |
| CN104317317B CN104317317B (en) | 2017-10-03 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112068617A (en) * | 2019-06-11 | 2020-12-11 | 中国石油化工股份有限公司 | Safety control system and control method for oxidation unit of anthraquinone method hydrogen peroxide device |
| CN112068492A (en) * | 2019-06-11 | 2020-12-11 | 中国石油化工股份有限公司 | Safety control system and control method for purification unit of anthraquinone method hydrogen peroxide device |
| CN113551944A (en) * | 2020-04-23 | 2021-10-26 | 中国石油化工股份有限公司 | System and method for monitoring acidity of oxidizing liquid in device for producing hydrogen peroxide by anthraquinone process |
| CN113551943A (en) * | 2020-04-23 | 2021-10-26 | 中国石油化工股份有限公司 | System and method for monitoring hydrogen peroxide concentration in raffinate |
| CN113551942A (en) * | 2020-04-23 | 2021-10-26 | 中国石油化工股份有限公司 | System and method for monitoring acidity of oxidizing liquid in device for producing hydrogen peroxide by anthraquinone process |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112068617A (en) * | 2019-06-11 | 2020-12-11 | 中国石油化工股份有限公司 | Safety control system and control method for oxidation unit of anthraquinone method hydrogen peroxide device |
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| CN104317317B (en) | 2017-10-03 |
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Address after: Yanan City, Shandong province Qingdao City three road 266071 No. 218 Applicant after: Qingdao Safety Engineering Research Institute of Sinopec Co., Ltd. Applicant after: Sinopec Corp. Address before: 100728 Beijing, Chaoyangmen, North Street, No. 22, No. Applicant before: Sinopec Corp. Applicant before: Qingdao Safety Engineering Research Institute of Sinopec Co., Ltd. |
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