CN102221384A - Method for measuring fluorine hydride in aluminum electrolytic plant in open way - Google Patents
Method for measuring fluorine hydride in aluminum electrolytic plant in open way Download PDFInfo
- Publication number
- CN102221384A CN102221384A CN 201110095194 CN201110095194A CN102221384A CN 102221384 A CN102221384 A CN 102221384A CN 201110095194 CN201110095194 CN 201110095194 CN 201110095194 A CN201110095194 A CN 201110095194A CN 102221384 A CN102221384 A CN 102221384A
- Authority
- CN
- China
- Prior art keywords
- signal
- hydrogen fluoride
- aluminum electrolytic
- aluminium electrolysis
- plc controller
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Abstract
The invention discloses a method for measuring fluorine hydride in an aluminum electrolytic plant in an open way. The method comprises the following steps of: arranging the optical emitting end and the optical receiving end of a laser detector above and at both sides of an electrolytic cell in the aluminum electrolytic plant respectively and detecting a laser light intensity variation signal which passes through the air above the electrolytic cell by adopting the laser detector; measuring an on-site wind speed signal by adopting a wind speed sensor arranged close to a skylight of the aluminum electrolytic plant; measuring an on-site humidity signal by adopting a humidity sensor arranged in the aluminum electrolytic plant; and acquiring the laser light intensity variation signal, the wind speed signal and the humidity signal by using a PLC (Programmable Logic Controller) and calculating the discharge amount of hydrogen fluoride in the aluminum electrolytic plant in real time according to a hydrogen fluoride discharge computing program which is embedded into the PLC. The method has instantaneity and accuracy and plays a non-negligible role in realizing safety production; and the labor force is liberated to a certain degree.
Description
Technical field
The present invention relates to measure investigating method and apparatus field, especially relate to the method that a kind of aluminium electrolysis shop open type hydrogen fluoride is measured.
Background technology
Pfc gas is the general name of several fluorocarbons of discharging when anode effect takes place in the primary aluminum production run, its retention time in atmosphere approximately is 50 times of carbon dioxide, its greenhouse effect ability (infrared ray absorbing ability) is 6770 times of carbon dioxide, under the situation of global warming, aluminium manufacturing enterprise reduces the correlative study and the technological transformation of pfc gas discharging always.Other dischargings have crucial meaning to hydrofluoric measuring method to the control fluorocarbons in the primary aluminum production run, present measuring method is to adopt gas sampling to detect, its defective is to measure trouble, and efficient is low-cost high, thereby can not reflect in real time that on-the-spot hydrofluoric discharge capacity carries out emission control.
Summary of the invention
In view of this, the method that the object of the present invention is to provide a kind of aluminium electrolysis shop open type hydrogen fluoride to measure, this method improves accuracy and the real-time of measuring, and improves and measures efficiency of measurement, reduces and measures cost.
For achieving the above object, the present invention by the following technical solutions:
The top that the optical emitting end and the optics receiving terminal of one laser detecting apparatus is installed in the aluminium electrolysis shop electrolytic cell, optical emitting end and optics receiving end are provided with the both sides of described electrolytic cell respectively, adopt this laser detecting apparatus detection to pass the laser intensity variable signal of electrolytic cell top air; Employing is arranged near the wind velocity signal of the air velocity transducer measure field in aluminium electrolysis shop skylight; Employing is arranged on the moisture signal at the humidity sensor measurement scene in the aluminium electrolysis shop; One PLC controller is gathered described laser intensity variable signal, wind velocity signal and moisture signal, discharges the hydrogen fluoride discharge capacity that calculation procedure calculates this aluminium electrolysis shop in real time according to the hydrogen fluoride that is embedded in the PLC controller; One man-machine interface watch-dog links to each other with described PLC controller, and the man-machine interface watch-dog is used to show all kinds of field apparatus duties and all kinds of measured value and hydrogen fluoride discharge capacity; Described man-machine interface watch-dog can send steering order and finish control to all kinds of field apparatuss by the PLC controller; All kinds of field apparatuss comprise laser detecting apparatus, air velocity transducer, humidity sensor.
The invention has the beneficial effects as follows:
The present invention has realized real-time in-situ measurement, avoided gas sampling to detect the sluggish problem of measuring, the on-the-spot hydrofluoric discharge capacity of reflection promptly and accurately, help taking measures rapidly to carry out processing controls, it is influential to reduce hydrogen fluoride staff to aluminium manufacturer on health, reduces the influence of hydrogen fluoride to environment.
Other advantages of the present invention, target and feature will be set forth to a certain extent in the following description, and to a certain extent, based on being conspicuous to those skilled in the art, perhaps can obtain instruction from the practice of the present invention to investigating hereinafter.Target of the present invention and other advantages can realize and obtain by specifically noted structure in following instructions and the accompanying drawing.
Description of drawings
The logic diagram of measuring system when Fig. 1 implements for the inventive method.
Embodiment
Below in conjunction with drawings and Examples the present invention is further described.
As shown in drawings, the measuring system of enforcement of the present invention comprises laser detecting apparatus 2, the optical emitting end 1 of laser detecting apparatus 2 and optics receiving terminal 7, and PLC controller 3 is as the HMI man-machine interface watch-dog 4 of host computer, air velocity transducer 5, humidity sensor 6.Measuring method is the top that the optical emitting end 1 of laser detecting apparatus 2 and optics receiving terminal 7 is installed in the aluminium electrolysis shop electrolytic cell, optical emitting end 1 and optics receiving end 7 are provided with the both sides of described electrolytic cell respectively, the laser signal that sends of optical emitting end 1 air that passes the electrolytic cell top arrives optics receiving end 7 then like this, adopts this laser detecting apparatus 2 to detect the laser intensity variable signal that passes electrolytic cell top air; Employing is arranged near the wind velocity signal of air velocity transducer 5 measure field the aluminium electrolysis shop skylight; Employing is arranged on the moisture signal of humidity sensor 6 measure field in the aluminium electrolysis shop; PLC controller 3 is gathered described laser intensity variable signal, wind velocity signal and moisture signal, discharge the hydrogen fluoride discharge capacity that calculation procedure calculates this aluminium electrolysis shop in real time according to the hydrogen fluoride that is embedded in the PLC controller, hydrogen fluoride discharging calculation procedure is meant that the laser intensity variable quantity that laser detecting apparatus is measured is expressed as the algorithm software of hydrogen fluoride concentration.Man-machine interface watch-dog 4 links to each other with described PLC controller 3, and man-machine interface watch-dog 4 is used to show all kinds of field apparatus duties and all kinds of measured value and hydrogen fluoride discharge capacity; Described man-machine interface watch-dog 4 can send steering order and finish control to all kinds of field apparatuss by PLC controller 3; All kinds of field apparatuss comprise laser detecting apparatus 2, air velocity transducer 5, humidity sensor 6.Measuring principle of the present invention is, optical emitting end 1 penetrates the laser that hydrogen fluoride gas absorbs line, light beam passes and contains hydrofluoric tested air, because the absorption of tested air causes the weak of light intensity, laser signal after optics receiving terminal 7 receiving light powers change detects light intensity signal by laser detecting apparatus 2.Be connected with concentric cable by optical fiber between laser detecting apparatus 2, optical emitting end 1 and the optics receiving terminal 7 during concrete enforcement, the data of measuring are stored on the internal memory in the laser detecting apparatus 2, give PLC controller 3 data message then, simultaneously the data of air velocity transducer 5 and humidity sensor 6 acquisitions, pass through MODBUS, communications protocol such as PROFIBUS send PLC controller 3 to, and the Programmable Logic Controller algorithm routine is calculated hydrofluoric discharge capacity then.Among the present invention by reading the on-site signal that PLC controller 3 is gathered, with these signals at man-machine interface watch-dog 4(host computer) on shown and the state value that shows various kinds of equipment of image; Simultaneously, the user can operate by the equipment to the scene on host computer, sends the order that oneself needs.This supervisory system and detection method have been liberated the labour to a certain extent, and very important effect has also been played in safety in production.
Explanation is at last, above embodiment is only unrestricted in order to technical scheme of the present invention to be described, other modifications that those of ordinary skills make technical scheme of the present invention or be equal to replacement, only otherwise break away from the spirit and scope of technical solution of the present invention, all should be encompassed in the middle of the claim scope of the present invention.
Claims (1)
1. the method measured of an aluminium electrolysis shop open type hydrogen fluoride, it is characterized in that: the top that the optical emitting end and the optics receiving terminal of a laser detecting apparatus is installed in the aluminium electrolysis shop electrolytic cell, optical emitting end and optics receiving end are provided with the both sides of described electrolytic cell respectively, adopt this laser detecting apparatus detection to pass the laser intensity variable signal of electrolytic cell top air; Employing is arranged near the wind velocity signal of the air velocity transducer measure field in aluminium electrolysis shop skylight; Employing is arranged on the moisture signal at the humidity sensor measurement scene in the aluminium electrolysis shop; One PLC controller is gathered described laser intensity variable signal, wind velocity signal and moisture signal, discharges the hydrogen fluoride discharge capacity that calculation procedure calculates this aluminium electrolysis shop in real time according to the hydrogen fluoride that is embedded in the PLC controller; One man-machine interface watch-dog links to each other with described PLC controller, and the man-machine interface watch-dog is used to show all kinds of field apparatus duties and all kinds of measured value and hydrogen fluoride discharge capacity; Described man-machine interface watch-dog can send steering order and finish control to all kinds of field apparatuss by the PLC controller; All kinds of field apparatuss comprise laser detecting apparatus, air velocity transducer, humidity sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110095194 CN102221384A (en) | 2011-04-15 | 2011-04-15 | Method for measuring fluorine hydride in aluminum electrolytic plant in open way |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110095194 CN102221384A (en) | 2011-04-15 | 2011-04-15 | Method for measuring fluorine hydride in aluminum electrolytic plant in open way |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102221384A true CN102221384A (en) | 2011-10-19 |
Family
ID=44778004
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110095194 Pending CN102221384A (en) | 2011-04-15 | 2011-04-15 | Method for measuring fluorine hydride in aluminum electrolytic plant in open way |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102221384A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103914024A (en) * | 2013-01-05 | 2014-07-09 | 昆山晶科微电子材料有限公司 | Safe automatic control system for hydrogen fluoride workshop |
| CN113655029A (en) * | 2021-09-06 | 2021-11-16 | 沈阳博宇科技有限责任公司 | Online monitoring and measuring method for skylight HF unorganized emission of electrolysis workshop |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1325020A (en) * | 2000-05-19 | 2001-12-05 | 光科学股份有限公司 | Optical-flow sensor |
| US6545261B1 (en) * | 1999-08-31 | 2003-04-08 | James N. Blake | Fiber optic alignment system and method |
| CN101726337A (en) * | 2008-10-22 | 2010-06-09 | 中国科学院大连化学物理研究所 | Iodine flow measuring device and application thereof |
-
2011
- 2011-04-15 CN CN 201110095194 patent/CN102221384A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6545261B1 (en) * | 1999-08-31 | 2003-04-08 | James N. Blake | Fiber optic alignment system and method |
| CN1325020A (en) * | 2000-05-19 | 2001-12-05 | 光科学股份有限公司 | Optical-flow sensor |
| CN101726337A (en) * | 2008-10-22 | 2010-06-09 | 中国科学院大连化学物理研究所 | Iodine flow measuring device and application thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103914024A (en) * | 2013-01-05 | 2014-07-09 | 昆山晶科微电子材料有限公司 | Safe automatic control system for hydrogen fluoride workshop |
| CN113655029A (en) * | 2021-09-06 | 2021-11-16 | 沈阳博宇科技有限责任公司 | Online monitoring and measuring method for skylight HF unorganized emission of electrolysis workshop |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205157428U (en) | Fixed scanning formula methane gas remote supervising system | |
| CN102841584B (en) | Cable tunnel environment parameter monitoring system | |
| CN203275291U (en) | Coal mine gas safety monitoring system based on optical fiber sensing technology | |
| CN102942061B (en) | A kind of corrective system of automatic transportation equipment and a kind of calibrating method | |
| CN104198393A (en) | On-line monitoring system and method for SF6 decomposition gas components in electrical equipment | |
| CN101587005A (en) | Acoustic velocimetry SF6 gas leakage monitoring and warning system | |
| CN110824136A (en) | Water supply pipe network water quality monitoring system and method | |
| CN103901436B (en) | A kind of method that laser radar automatically gathers and protects | |
| CN104535735B (en) | Water quality remote on-line monitoring method | |
| CN204008434U (en) | Gas decomposition product device in optoacoustic spectroscopy on-line monitoring SF6 electrical equipment | |
| CN102221384A (en) | Method for measuring fluorine hydride in aluminum electrolytic plant in open way | |
| CN114321740A (en) | Combustible gas leakage point positioning method and system and readable storage module | |
| CN103592253A (en) | Laser gas analyzer for precise temperature compensation in concentration of gas to be measured | |
| CN201476813U (en) | Direct insert type continuous smoke monitoring data collection system | |
| KR101410333B1 (en) | System and method for monitering of solar cell | |
| CN204228602U (en) | Crop leaf physiological moisture monitoring system | |
| CN207407924U (en) | Industrial park ambient air quality supervisory systems | |
| CN206515321U (en) | A kind of air real-time monitoring device for forest ecological environment | |
| CN116245230B (en) | Operation inspection and trend analysis method and system for power station equipment | |
| CN208125189U (en) | A kind of monitoring system of tailings dam | |
| CN115527356A (en) | New energy open-air infrastructure construction site environment monitoring system and method | |
| CN113607674B (en) | Multi-gas detection method and system based on MEMS gas sensor array | |
| CN104914070A (en) | Anti-explosion anti-fog type gas chamber of laser gas detector | |
| CN204679417U (en) | A kind of explosion-proof antifogging type laser gas detector air chamber | |
| CN104143245A (en) | Forest fire monitoring system and method for power transmission line |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20111019 |