CN104317324A - Acidification PH value automatic monitoring control device - Google Patents
Acidification PH value automatic monitoring control device Download PDFInfo
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- CN104317324A CN104317324A CN201410511510.5A CN201410511510A CN104317324A CN 104317324 A CN104317324 A CN 104317324A CN 201410511510 A CN201410511510 A CN 201410511510A CN 104317324 A CN104317324 A CN 104317324A
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Abstract
The invention discloses an acidification PH value automatic monitoring control device. The acidification PH value automatic monitoring control device includes a reactor, a hydrochloric acid metering tank, an online PH meter, and a detecting electrode which is installed in the reactor and is used for detecting the PH value of a reaction solution in the reactor; the hydrochloric acid metering tank is communicated with the top of the reactor through a conveying pipeline; the conveying pipeline is provided with an electromagnetic dropping valve which can open and close the conveying pipeline; the detecting electrode is connected with the online PH meter through a signal line; the online PH meter controls the electromagnetic dropping valve to be opened or closed through the signal line; a high point preset value of the online PH meter ranges from 6 to 9; when the PH value of the reaction solution in the reactor is higher than the high point preset value, the online PH meter opens the electromagnetic dropping valve through the signal line; and when the PH value of the reaction solution in the reactor is lower than the high point preset value, the online PH meter closes the electromagnetic dropping valve through the signal line. The acidification PH value automatic monitoring control device of the invention can automatically detect the PH value of the reaction solution in the reactor, and adjust the PH value of the reaction solution in the reactor to a range suitable for acidification.
Description
Technical field
The present invention relates to acid out pH value automatic monitoring controller.
Background technology
(R)-(+)-2-(4-hydroxyphenoxy) synthetic route of propionic acid (be called for short DHPPA) has multiple, general employing S-2-methyl chloropropionate and p-dihydroxy-benzene synthesize the process route of DHPPA under the condition of alkalescence, in course of reaction, reaction is completed in order to make raw material S-2-methyl chloropropionate, adopt the measure that p-dihydroxy-benzene is excessive, need to carry out acid out after completion of reaction and reclaim p-dihydroxy-benzene.Current acid out mode of operation is all the pH value adopting first artificial test paper assaying reaction liquid, then manually carries out acid adding according to pH value again or mends alkali operation, to ensure that the pH value of reactant liquor can make p-dihydroxy-benzene separate out.The shortcoming of above-mentioned acid out mode of operation is: artificial measured reaction liquid pH value and acid adding mend the operation of alkali, not only workman's workload is large, inefficiency, and manually-operated error sometimes, very easily occur that acidifying is excessive, at this moment just need manually again to add alkali again, thus add the generation of abraum salt, and then cause raw-material waste.
Summary of the invention
The object of this invention is to provide the acid out pH value automatic monitoring controller that a kind of work efficiency is high.
For achieving the above object, present invention employs following technical scheme: described acid out pH value automatic monitoring controller, comprise: reactor, also comprise hydrochloric acid test tank, online PH meter, and the detecting electrode be installed in order to reactant liquor pH value in detection reaction still in reactor, hydrochloric acid test tank is connected with reactor top by conveyance conduit, conveyance conduit is provided with the electromagnetism that can open or close conveyance conduit and drips valve, detecting electrode to be counted with online PH by signal wire and is connected, online PH meter controls electromagnetism dropping valve by signal wire and opens or closes, the PH height point preset value of described online PH meter is (6-9), when the pH value of reaction kettle for reaction liquid is higher than height point preset value, online PH meter is opened electromagnetism by signal wire and is dripped valve, when the pH value of reaction kettle for reaction liquid is lower than height point preset value, online PH meter cuts out electromagnetism by signal wire and drips valve.
Further, aforesaid acid out pH value automatic monitoring controller, wherein: the PH height point preset value of online PH meter is 7.5.
By the enforcement of technique scheme, the invention has the beneficial effects as follows: the pH value of reactant liquor in the automatic detection reaction still of energy, and the pH value of reaction kettle for reaction liquid is adjusted to the scope of applicable acid out, not only labor strength is low, work efficiency is high, and effectively improve the raw-material utilization factors such as soda acid, eliminate the generation of abraum salt, save use cost.
Accompanying drawing explanation
Fig. 1 is the principle of work schematic diagram of acid out pH value automatic monitoring controller of the present invention.
Embodiment
Below in conjunction with the drawings and specific embodiments, the invention will be further described.
As shown in Figure 1, described acid out pH value automatic monitoring controller, comprise: reactor 1, hydrochloric acid test tank 2, online PH meter 3, and the detecting electrode 4 be installed in order to reactant liquor pH value in detection reaction still 1 in reactor 1, hydrochloric acid test tank 2 is connected by the top of conveyance conduit 5 with reactor 1, on conveyance conduit, 5 are provided with the electromagnetism dropping valve 6 that can open or close conveyance conduit 5, detecting electrode 4 is counted 3 by the first signal wire 7 with online PH and is connected, online PH meter 3 controls electromagnetism dropping valve 6 by secondary signal line 8 and opens or closes, the PH height point preset value of described online PH meter 3 is (6-9), when the pH value of reactant liquor in reactor 1 is higher than height point preset value, online PH meter 3 is opened electromagnetism by secondary signal line 8 and is dripped valve 6, when the pH value of reactant liquor in reactor 1 is lower than height point preset value, online PH meter 3 cuts out electromagnetism by secondary signal line 8 and drips valve 6, in the present embodiment, the PH height point preset value of online PH meter 3 is 7.5,
Principle of work of the present invention is: the detecting electrode 4 being arranged in reactor 1 measures the pH value of reactor 1 reactant liquor all the time and sent to by the pH value signal be measured to online PH to count 3, when the pH value that online PH meter 3 receives reactant liquor in reactor 1 higher than 7.5 time, online PH meter 3 is opened electromagnetism by secondary signal line 8 and is dripped valve 6, hydrochloric acid now in hydrochloric acid test tank 2 can drip valve 6 by conveyance conduit 5 electromagnetism and carry out pH value neutralization from the top instillation reactor 1 of reactor 1, makes the pH value of reactant liquor in reactor 1 control 7.5; When the pH value that online PH meter 3 receives reactant liquor in reactor 1 lower than 7.5 time, online PH meter 3 can cut out electromagnetism by secondary signal line 8 and drip valve 6, stops the dropping of hydrochloric acid; Can the pH value of reactant liquor in detection reaction still automatically by aforesaid operations, and the pH value of reaction kettle for reaction liquid is adjusted to the scope of applicable acid out, not only labor strength is low, work efficiency is high, and effectively improve the raw-material utilization factors such as soda acid, eliminate the generation of abraum salt, save use cost.
Claims (2)
1. acid out pH value automatic monitoring controller, comprise: reactor, it is characterized in that: also comprise hydrochloric acid test tank, online PH meter, and the detecting electrode be installed in order to reactant liquor pH value in detection reaction still in reactor, hydrochloric acid test tank is connected with reactor top by conveyance conduit, conveyance conduit is provided with the electromagnetism that can open or close conveyance conduit and drips valve, detecting electrode to be counted with online PH by signal wire and is connected, online PH meter controls electromagnetism dropping valve by signal wire and opens or closes, the PH height point preset value of described online PH meter is (6-9), when the pH value of reaction kettle for reaction liquid is higher than height point preset value, online PH meter is opened electromagnetism by signal wire and is dripped valve, when the pH value of reaction kettle for reaction liquid is lower than height point preset value, online PH meter cuts out electromagnetism by signal wire and drips valve.
2. acid out pH value automatic monitoring controller according to claim 1, is characterized in that: the PH height point preset value of online PH meter is 7.5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410511510.5A CN104317324A (en) | 2014-09-29 | 2014-09-29 | Acidification PH value automatic monitoring control device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410511510.5A CN104317324A (en) | 2014-09-29 | 2014-09-29 | Acidification PH value automatic monitoring control device |
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| CN104317324A true CN104317324A (en) | 2015-01-28 |
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| CN201410511510.5A Pending CN104317324A (en) | 2014-09-29 | 2014-09-29 | Acidification PH value automatic monitoring control device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105388921A (en) * | 2015-12-17 | 2016-03-09 | 吉首大学 | Chemical combination barrel acid adding system and method |
| CN107656554A (en) * | 2017-09-23 | 2018-02-02 | 南京律智诚专利技术开发有限公司 | A kind of device for automatically adjusting acid-base value |
| CN111855890A (en) * | 2020-06-18 | 2020-10-30 | 杭州牛斗科技有限公司 | Method for maintaining required pH value of reaction liquid in continuous feeding reaction process |
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| WO2001020653A1 (en) * | 1999-09-10 | 2001-03-22 | Koninklijke Philips Electronics N.V. | Arrangement and method for detecting the end of life of an aqueous bath utilized in semiconductor processing |
| CN201785233U (en) * | 2010-08-13 | 2011-04-06 | 山东国瑞环保产业有限公司 | PH value automatic regulation system based on PID (Proportion Integration Differentiation) close-loop control |
| CN202205106U (en) * | 2011-08-18 | 2012-04-25 | 山东江口生物科技有限公司 | Online adjusting and monitoring system for pH value of starch milk |
| CN203350738U (en) * | 2013-08-06 | 2013-12-18 | 山东科源化工有限公司 | Profenofos condensation PH detection and adjustment automatic control device |
| CN204241982U (en) * | 2014-09-29 | 2015-04-01 | 张家港市三联化工科技有限公司 | Acid out pH value automatic monitoring controller |
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2014
- 2014-09-29 CN CN201410511510.5A patent/CN104317324A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001020653A1 (en) * | 1999-09-10 | 2001-03-22 | Koninklijke Philips Electronics N.V. | Arrangement and method for detecting the end of life of an aqueous bath utilized in semiconductor processing |
| CN201785233U (en) * | 2010-08-13 | 2011-04-06 | 山东国瑞环保产业有限公司 | PH value automatic regulation system based on PID (Proportion Integration Differentiation) close-loop control |
| CN202205106U (en) * | 2011-08-18 | 2012-04-25 | 山东江口生物科技有限公司 | Online adjusting and monitoring system for pH value of starch milk |
| CN203350738U (en) * | 2013-08-06 | 2013-12-18 | 山东科源化工有限公司 | Profenofos condensation PH detection and adjustment automatic control device |
| CN204241982U (en) * | 2014-09-29 | 2015-04-01 | 张家港市三联化工科技有限公司 | Acid out pH value automatic monitoring controller |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105388921A (en) * | 2015-12-17 | 2016-03-09 | 吉首大学 | Chemical combination barrel acid adding system and method |
| CN107656554A (en) * | 2017-09-23 | 2018-02-02 | 南京律智诚专利技术开发有限公司 | A kind of device for automatically adjusting acid-base value |
| CN111855890A (en) * | 2020-06-18 | 2020-10-30 | 杭州牛斗科技有限公司 | Method for maintaining required pH value of reaction liquid in continuous feeding reaction process |
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Application publication date: 20150128 |
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