CN201302558Y - Device for on-line detecting perchlorate hydrogen chloride - Google Patents
Device for on-line detecting perchlorate hydrogen chloride Download PDFInfo
- Publication number
- CN201302558Y CN201302558Y CNU2008201490934U CN200820149093U CN201302558Y CN 201302558 Y CN201302558 Y CN 201302558Y CN U2008201490934 U CNU2008201490934 U CN U2008201490934U CN 200820149093 U CN200820149093 U CN 200820149093U CN 201302558 Y CN201302558 Y CN 201302558Y
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- hydrogen chloride
- chlorine
- absorption device
- measuring device
- line measuring
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Abstract
The utility model discloses a device for on-line detecting perchlorate hydrogen chloride, which comprises a hydrogen chloride absorption device. The hydrogen chloride absorption device is communicated with a detection device; the detection device communicated with a DCS control center is an ORP detector; and the absorption device comprises a hydrogen chloride flowmeter, a purified water flowmeter and a hydrogen chloride absorber which are connected in sequence. The ORP detector is adopted as the detection device in the device provided by the utility model, so that the testing result is accurate; the perchlorate hydrogen chloride can be continuously, promptly and comprehensively detected; the investment is small, the cost is low, the repair rate is low; the sensitivity is high and the false operation possibility is small. The device is favorable for stable production, and meanwhile, is an environment-friendly device for on-line detecting perchlorate hydrogen chloride.
Description
Technical field
The utility model belongs to a kind of pick-up unit, relates in particular to free chlorine on-line measuring device in a kind of hydrogen chloride building-up process.
Background technology
Hydrogen and chlorine generate hydrogen chloride in the synthetic furnace internal combustion, if it is improper that chlorine and hydrogen proportioning are adjusted, can cause hydrogen chloride to contain unburnt chlorine, when the hydrogen chloride that has rough burning chlorine is sent into the Polyvinylchloride operation, and chlorine gas concentration is when surpassing certain value, excessive free chlorine can with acetylene generation vigorous reaction, emit big calorimetric, can produce serious accidents such as burning, blast, not only damage pipeline, equipment, and bring very big threat to safety in production.
The device of crossing at present chlorine in the industry in the common detection hydrogen chloride has indirect detection device or direct-on-line pick-up unit, the indirect detection device is regularly by analyzing hydrogen chloride purity, lead to then in the DCS system and observe, control chlorine, hydrogen proportioning and flow difference, adjust hydrogen chloride purity, such system and device can reach the proportioning of adjusting chlorine and hydrogen, but manual detection result lags behind, subjectivity is strong, analysis time is longer, limitation is bigger, can not continuously, in time comprehensively detect in the hydrogen chloride whether cross chlorine, and generation easily causes the accident.The direct-on-line pick-up unit generally comprises the hydrogen chloride absorption device, pick-up unit and DCS control center, disclosed day on July 2nd, 2008 as Chinese patent, publication number CN101210900A, denomination of invention is the utility model patent of " online characterization processes of free chlorine and device in a kind of hydrogen chloride building-up process ", this patent pick-up unit is to comprise that at least one deposits the container of electrolytic solution, be provided with electrode in the container in order to the indicating potential difference, electrolytic solution, electrode is connected to the collecting and distributing control center of DCS outside the sensing chamber, on-line measuring device sensitivity has great raising with respect to indirect on-line measuring device in this patent, but have following shortcoming: investment is big, the expense height, the repair rate height, sensitivity is relatively poor, the maloperation possibility is big, is unfavorable for steady production, utilizes electrolytic vessel that free chlorine is converted into potential difference (PD) simultaneously and outputs to DCS control center, electrolytic vessel is short serviceable life on the one hand, and electrolytic solution causes great pollution without the improper meeting of aftertreatment to environment on the other hand.
The utility model content
The purpose of this utility model just is to overcome above-mentioned deficiency provides a kind of hydrogen chloride to cross the chlorine on-line measuring device, solved in the past hydrogen chloride and crossed the low technical matters of the online detection sensitivity of chlorine, the utility model still is that a kind of hydrogen chloride of environmental protection is crossed the chlorine on-line measuring device simultaneously.
The technical solution of the utility model is:
A kind of hydrogen chloride is crossed the chlorine on-line measuring device, comprises the hydrogen chloride absorption device, and hydrogen chloride absorption device and pick-up unit are by being communicated with, and pick-up unit is communicated to DCS control center, and described pick-up unit is an ORP meter detector.
Above-mentioned hydrogen chloride is crossed the chlorine on-line measuring device, and described absorption plant is taken into account the hydrogen chloride absorption device by hydrogen chloride flow meter, pure water flow and is connected successively and constitutes.
Above-mentioned hydrogen chloride is crossed the chlorine on-line measuring device, also is provided with exhaust gas absorption device on the hydrogen chloride absorption device.
Above-mentioned hydrogen chloride is crossed the chlorine on-line measuring device, also is provided with gas exhaust duct on the hydrogen chloride absorption device.
Above-mentioned hydrogen chloride is crossed the chlorine on-line measuring device, also is provided with gas exhaust duct on hydrogen chloride flow meter.
Above-mentioned hydrogen chloride is crossed the chlorine on-line measuring device, and the gas exhaust duct on the hydrogen chloride absorption device is connected with same pipeline with gas exhaust duct on the hydrogen chloride flow meter.
The utility model is owing to adopt ORP meter detector as pick-up unit, testing result is accurate, can continuously, in time comprehensively detect and whether cross chlorine in the hydrogen chloride, and invest for a short time, expense is low, and repair rate is low, highly sensitive, the maloperation possibility is little, is beneficial to steady production, and simultaneously the utility model still is that a kind of hydrogen chloride of environmental protection is crossed the chlorine on-line measuring device.
Description of drawings
Accompanying drawing is a structural representation of the present utility model.
Embodiment
A kind of as shown in drawings hydrogen chloride is crossed the chlorine on-line measuring device, comprise the hydrogen chloride absorption device, hydrogen chloride absorption device and pick-up unit are by being communicated with, pick-up unit is communicated to DCS control center, described pick-up unit is an ORP meter detector, described absorption plant is by hydrogen chloride flow meter, the pure water flow is taken into account the hydrogen chloride absorption device and is connected successively and constitutes, on the hydrogen chloride absorption device, also be provided with exhaust gas absorption device, on the hydrogen chloride absorption device, also be provided with gas exhaust duct, also be provided with gas exhaust duct on hydrogen chloride flow meter, the gas exhaust duct on the hydrogen chloride absorption device is connected with same pipeline with gas exhaust duct on the hydrogen chloride flow meter.
Principle of work of the present utility model is as follows:
1, the ORP value is the measurement index of solution oxide reducing power.The utility model utilization changes responsive potential electrode and measures electromotive force by the working battery that the contrast electrode of constant potential is formed solution O RP value, thereby utilizes the linear relationship between the electromotive force size of the ORP value of solution to be measured and working battery to realize mensuration;
2, adopt this newly to cross the chlorine on-line measuring device with novel hydrogen chloride.Installation and measuring device (seeing figure) on the hydrogen chloride house steward, its principle is: the hydrogen chloride of drawing from the hydrogen chloride house steward enters absorber after by the flowmeter metering, absorb with pure water, in absorber, make dilute hydrochloric acid solution, overflow detects through the ORP meter, and the dilute acid soln after the detection reclaims does acid.When hydrogen chloride is crossed chlorine, micro-free chlorine can make the ORP value of detection take place sharply to change, and when the ORP value reached certain value, DCS control center meeting basis was advanced stove chlorine, hydrogen proportioning difference is regulated chlorine or hydrogen autovalve automatically, correct hydrogen chloride and cross the chlorine situation, this device response time is 10S.
3, use the utility model device, when switching to shut down condition, remaining hydrogen chloride can be with diluted acid suck-back in the absorber in the hydrogen chloride flow scale, therefore must installation in the device can replace the three-way valve of hydrogen chloride gas,, close hydrogen chloride so that before stoppage in transit, with nitrogen or industrial wind the hydrogen chloride flow scale is replaced, simultaneously before entering absorber, hydrogen chloride installs exhaust-valve additional, in case when hydrogen chloride flow scale internal cause generation suck-back has diluted acid, but also emptying of dilute acid soln.
4, use apparatus of the present invention, control absorber outlet dilute acid concentration, otherwise dilute acid concentration, temperature etc. will produce considerable influence to the accuracy of OPR value in specialized range.
Claims (6)
1, a kind of hydrogen chloride is crossed the chlorine on-line measuring device, comprises the hydrogen chloride absorption device, and hydrogen chloride absorption device and pick-up unit are by being communicated with, and pick-up unit is communicated to DCS control center, it is characterized in that: described pick-up unit is an ORP meter detector.
2, hydrogen chloride according to claim 1 is crossed the chlorine on-line measuring device, it is characterized in that: described absorption plant is taken into account the hydrogen chloride absorption device by hydrogen chloride flow meter, pure water flow and is connected successively and constitutes.
3, hydrogen chloride according to claim 2 is crossed the chlorine on-line measuring device, it is characterized in that: also be provided with exhaust gas absorption device on the hydrogen chloride absorption device.
4, cross the chlorine on-line measuring device according to claim 2 or 3 described hydrogen chloride, it is characterized in that: on the hydrogen chloride absorption device, also be provided with gas exhaust duct.
5, hydrogen chloride according to claim 4 is crossed the chlorine on-line measuring device, it is characterized in that: also be provided with gas exhaust duct on hydrogen chloride flow meter.
6, hydrogen chloride according to claim 5 is crossed the chlorine on-line measuring device, it is characterized in that: the gas exhaust duct on the hydrogen chloride absorption device is connected with same pipeline with gas exhaust duct on the hydrogen chloride flow meter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201490934U CN201302558Y (en) | 2008-09-09 | 2008-09-09 | Device for on-line detecting perchlorate hydrogen chloride |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201490934U CN201302558Y (en) | 2008-09-09 | 2008-09-09 | Device for on-line detecting perchlorate hydrogen chloride |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201302558Y true CN201302558Y (en) | 2009-09-02 |
Family
ID=41086185
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201490934U Expired - Fee Related CN201302558Y (en) | 2008-09-09 | 2008-09-09 | Device for on-line detecting perchlorate hydrogen chloride |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201302558Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102879422A (en) * | 2012-10-08 | 2013-01-16 | 江苏省格林艾普化工股份有限公司 | Method for detecting hydrogen chloride chlorination during preparation of polyvinyl chloride by using calcium carbide method |
| CN109187858A (en) * | 2018-08-23 | 2019-01-11 | 唐山三友氯碱有限责任公司 | The equipment and its control method that hydrogen chloride gas purity is detected |
-
2008
- 2008-09-09 CN CNU2008201490934U patent/CN201302558Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102879422A (en) * | 2012-10-08 | 2013-01-16 | 江苏省格林艾普化工股份有限公司 | Method for detecting hydrogen chloride chlorination during preparation of polyvinyl chloride by using calcium carbide method |
| CN109187858A (en) * | 2018-08-23 | 2019-01-11 | 唐山三友氯碱有限责任公司 | The equipment and its control method that hydrogen chloride gas purity is detected |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090902 Termination date: 20160909 |