CN110898602B - Mercury treatment system and treatment method - Google Patents
Mercury treatment system and treatment method Download PDFInfo
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- CN110898602B CN110898602B CN201911106240.9A CN201911106240A CN110898602B CN 110898602 B CN110898602 B CN 110898602B CN 201911106240 A CN201911106240 A CN 201911106240A CN 110898602 B CN110898602 B CN 110898602B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/60—Heavy metals or heavy metal compounds
- B01D2257/602—Mercury or mercury compounds
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Abstract
The present application relates to a mercury treatment system and method. The mercury treatment system comprises a first electromagnetic valve, a mercury enrichment unit, a second electromagnetic valve and a control unit; a plurality of mercury enrichment pipes are arranged in the mercury enrichment unit, and mercury heating and analyzing devices are arranged in the mercury enrichment pipes; the front ends of the multiple mercury-rich pipes are connected with the first electromagnetic valves, and the rear ends of the multiple mercury-rich pipes are connected with the second electromagnetic valves; the control unit is used for controlling the switching of different valves of the first electromagnetic valve and the second electromagnetic valve. The mercury processing system that this application provided can realize different connected mode between the mercury enrichment pipe through the switching of control solenoid valve for this mercury processing system can realize the self-checking of demercuration, enrichment mercury and mercury enrichment efficiency, and it is simple and direct to use extensive and control.
Description
Technical Field
The invention relates to a mercury treatment system and a mercury treatment method, in particular to a mercury treatment system and a mercury treatment method which can remove mercury, enrich mercury and self-check mercury enrichment efficiency.
Background
The enrichment material that adopts in the mercury enrichment pipe is the gold material usually, and the mercury enrichment pipe is the quartz material usually, and enrichment material and quartz material physical contact, in the repeated alternating process between heating analytic process high temperature and normal atmospheric temperature, because the material difference leads to coefficient of expansion difference, the clearance between enrichment material and the quartz material can change, leads to the sample gas when passing through the gas circuit, and the gas resistance is corresponding also can change, and the superficial area that the gas contacted enrichment material will change thereupon, and then leads to the change of enrichment efficiency. Therefore, it is important to control the quality of the mercury enrichment efficiency of the mercury enrichment tube regularly.
The mercury enrichment device in the prior art only utilizes the mercury enrichment tube to simply enrich mercury, the structure and the function of the mercury enrichment tube are single, the improvement on the structure of the mercury enrichment tube is mainly realized, or the mercury enrichment tube is simply applied to certain instruments or systems, and a complete quality control system is not formed.
In addition, in the process of mercury enrichment by using the mercury enrichment tube, the quality control of the mercury enrichment efficiency is difficult, the quality control process is complicated, the original enrichment tube needs to be detached for independent quality control, and the operation process is troublesome. When mercury in a mercury enrichment device is removed, after the mercury removal material works for a period of time, a state of mercury adsorption saturation occurs, the mercury removal efficiency is affected, and the mercury removal material needs to be manually replaced.
Disclosure of Invention
In view of the problems in the prior art, the application aims to provide a mercury treatment system and a mercury treatment method which have the functions of mercury removal, mercury enrichment and mercury self-checking mercury enrichment efficiency, and are wide in application and simple to operate.
The application firstly provides a mercury treatment system, which comprises a first electromagnetic valve, a mercury enrichment unit, a second electromagnetic valve and a control unit;
a plurality of mercury enrichment pipes are arranged in the mercury enrichment unit, and mercury heating and analyzing devices are arranged in the mercury enrichment pipes;
the front ends of the multiple mercury-rich pipes are connected with the first electromagnetic valves, and the rear ends of the multiple mercury-rich pipes are connected with the second electromagnetic valves;
the control unit is used for controlling the switching of different valves of the first electromagnetic valve and the second electromagnetic valve.
As an optional embodiment of the present application, the control unit controls switching of different valves of the first solenoid valve and the second solenoid valve, so that the plurality of mercury-rich tubes are alternately used, respectively.
As an optional embodiment of the present application, the control unit may control switching of different valves of the first solenoid valve and the second solenoid valve so that the plurality of mercury-rich tubes are connected in series.
As an optional embodiment of the present application, the control unit controls switching of different valves of the first solenoid valve and the second solenoid valve, so that the plurality of mercury-rich tubes are connected in parallel.
As an alternative embodiment of the present application, the system further comprises a flow control device,
the flow control device is connected to the second solenoid valve, and the control unit is configured to control a flow rate of gas passing through the flow control device.
As an alternative embodiment of the present application, the system further comprises an air intake device and an exhaust device;
the air inlet device is connected with the first electromagnetic valve, and the exhaust device is connected with the flow control device.
Further, the system also comprises an air exhaust device which is arranged between the flow control device and the exhaust device.
The application also provides a method for mercury treatment by using the mercury treatment system, which comprises the following steps:
the control unit controls switching of different valves of the first electromagnetic valve and the second electromagnetic valve, so that the multiple mercury-rich pipes are alternately used respectively, and the multiple mercury-rich pipes alternately perform mercury enrichment and mercury heating analysis.
Further, the method comprises:
the control unit controls switching of different valves of the first electromagnetic valve and the second electromagnetic valve, so that the multiple mercury-rich pipes are connected in series, and mercury enrichment efficiency of the mercury-rich pipes is verified by calculating mercury content enriched in the multiple mercury-rich pipes.
Further, the method comprises:
the control unit controls switching of different valves of the first electromagnetic valve and the second electromagnetic valve, so that the multiple mercury-rich pipes are connected in parallel, and the multiple mercury-rich pipes connected in parallel are enabled to simultaneously enrich mercury.
The mercury processing system that this application provided can realize different connected mode between the mercury enrichment pipe through the switching of control solenoid valve for this mercury processing system can realize the self-checking of demercuration, enrichment mercury and mercury enrichment efficiency, and it is simple and direct to use extensive and control.
Drawings
Fig. 1 is a schematic view of a mercury treatment system according to the present application.
Fig. 2 is a schematic view of a work flow of a mercury treatment system according to an embodiment.
Detailed Description
The following detailed description of the present invention, taken in conjunction with the accompanying drawings and examples, is provided to enable the invention and its various aspects and advantages to be better understood. However, the specific embodiments and examples described below are for illustrative purposes only and are not limiting of the invention.
The terms "connected" and "connected" as used herein, unless otherwise expressly specified or limited, are to be construed broadly, as meaning either directly or through an intermediate. In the description of the present application, it is to be understood that the directions or positional relationships indicated by "upper", "lower", "front", "rear", "left", "right", "top", "bottom", and the like are based on the directions or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and thus, should not be construed as limiting the present application.
As shown in fig. 1, the mercury treatment system provided by the present application includes a first solenoid valve 200, a mercury enrichment unit 300, a second solenoid valve 400, and a control unit 800.
Wherein, a plurality of mercury enrichment tubes are arranged in the mercury enrichment unit 300. And mercury heating and analyzing devices are arranged in the mercury-enriched pipes. The mercury heating and analyzing device can heat the mercury enrichment pipe, so that the mercury enriched in the mercury enrichment pipe is analyzed, and the mercury enriched in the mercury enrichment device is removed.
The front ends of the plurality of mercury-rich tubes in the mercury-rich unit 300 are all connected to the first solenoid valve 200, and the rear ends of the plurality of mercury-rich tubes are all connected to the second solenoid valve 400.
Further, the control unit 800 is configured to control different valves of the first electromagnetic valve 200 and the second electromagnetic valve 400 to switch, so as to implement different connection modes between the multiple mercury-rich tubes.
As an optional embodiment of the present application, two mercury-rich pipes, namely a first mercury-rich pipe and a second mercury-rich pipe, are disposed in the mercury-rich unit 300 of the present application.
As one of the embodiments of the present application, the control unit 800 alternately uses the plurality of mercury-rich tubes by controlling the switching of different valves of the first and second solenoid valves 200 and 400, respectively. In addition, the mercury treatment system can be used for removing mercury by starting the mercury heating and analyzing device in the mercury enrichment pipe.
Optionally, the control unit 800 controls the switching of different valves of the first electromagnetic valve 200 and the second electromagnetic valve 400 to realize the alternate use of the first mercury-rich tube and the second mercury-rich tube, and when the first mercury-rich tube enriches mercury, the second mercury-rich tube is heated, analyzed and activated to remove the mercury enriched therein. And the second mercury-rich pipe subjected to heating, analyzing and activating treatment can be recycled for mercury enrichment.
As another embodiment of the present application, the control unit 800 allows a plurality of mercury-rich tubes to be connected in series by controlling switching of different valves of the first and second solenoid valves 200 and 400. The enrichment efficiency of the front-end mercury enrichment pipe can be controlled by quantitatively analyzing the mercury content in the mercury enrichment pipes and then calculating the ratio of the mercury content in each mercury enrichment pipe.
Alternatively, the control unit 800 causes the first mercury-rich pipe and the second mercury-rich pipe to be connected in series by controlling switching of different valves of the first solenoid valve 200 and the second solenoid valve 400. After the first mercury-enriching pipe and the second mercury-enriching pipe are enriched with mercury, the enrichment efficiency of the first mercury-enriching pipe at the front end can be controlled by calculating the ratio of the mercury contents in the two mercury-enriching pipes.
As another embodiment of the present application, the control unit 800 allows a plurality of mercury-rich tubes to be connected in parallel by controlling switching of different valves of the first and second solenoid valves 200 and 400. The mercury is enriched by simultaneously working the mercury enrichment pipes, the enriched mercury concentration is quantitatively analyzed, and the accuracy of mercury concentration analysis can be improved.
Alternatively, the control unit 800 may cause the first mercury-rich tube and the second mercury-rich tube to be connected in parallel by controlling the switching of different valves of the first solenoid valve 200 and the second solenoid valve 400. The first mercury-enriching tube and the second mercury-enriching tube simultaneously enrich mercury, and accuracy of measurement results is improved by analyzing mercury concentration in parallel samples.
Further, the mercury processing system of the present application can also be used as a mercury concentration analysis pretreatment device. With the external analytical equipment of mercury processing system of this application, through heating the desorption to mercury enrichment pipe for mercury wherein releases and sends into analytical equipment, and then carries out the analysis to mercury concentration.
Alternatively, the mercury-rich tube of the present application employs a quartz tube. The mercury enrichment material in the mercury enrichment pipe is selected from gold material. Furthermore, the mercury enrichment material in the mercury enrichment tube is gold sand or gold particles. The mercury has strong affinity with gold, is easy to complement, can form gold amalgam, can be released again at high temperature, and has no change in chemical properties.
As an alternative embodiment, the mercury treatment system of the present application further includes a flow control device 500. The flow control device 500 is connected to the second solenoid valve 400. The control unit 800 can be used to control the flow rate of the gas passing through the flow rate control device 500.
Further, the control unit 800 can also control the heating temperature and sampling time of the mercury heating and analyzing device.
The mercury treatment system of the present application further includes an air inlet device 100 and an exhaust device 700. The intake device 100 is connected to a first solenoid valve 200. The exhaust device 700 is connected to the flow control device 500. The sample to be measured enters the mercury enrichment unit 300 through the air inlet device 100 via the first electromagnetic valve 200, and the sample subjected to mercury enrichment is discharged through the exhaust device 700. Further, the external mercury removal gas cylinder that connects of exhaust apparatus 700 can wash tail gas, avoids the polluted environment.
The mercury processing system of the present application further includes an air extraction device 600 for extracting gas from the gas path. The air-extracting device 600 is disposed between the flow control device 500 and the exhaust device 700, and is connected to the flow control device 500 and the exhaust device 700. Optionally, the gas evacuation device 600 of the present application employs a vacuum pump.
The application also provides a mercury treatment method performed according to the mercury treatment system.
A. The control unit 800 controls the switching of different valves of the first electromagnetic valve 200 and the second electromagnetic valve 400, so that the multiple mercury-rich pipes are alternately used, and the multiple mercury-rich pipes alternately perform mercury enrichment and mercury heating analysis, thereby realizing the continuous removal of mercury. The heating temperature of the mercury heating and analyzing device is controlled to be more than 600 ℃.
Further, the control unit 800 realizes the alternate use of the first mercury-rich pipe and the second mercury-rich pipe by controlling the switching of different valves of the first electromagnetic valve 200 and the second electromagnetic valve 400. When the first mercury enrichment pipe is used for enriching mercury, the mercury heating and analyzing device is started in the second enrichment pipe to carry out heating, analyzing and activating, the enriched mercury is removed, and the first mercury enrichment pipe and the second mercury enrichment pipe alternately work after a certain time. The setting of the time for the alternate operation can be controlled by the control unit 800. In addition, the mercury enrichment pipe subjected to heating, analyzing and activating treatment can also be recycled for mercury enrichment.
B. The control unit 800 controls switching of different valves of the first electromagnetic valve 200 and the second electromagnetic valve 400, so that the plurality of mercury-rich pipes are connected in series, and mercury-rich efficiency of the mercury-rich pipes is checked by calculating mercury content ratios enriched in the plurality of mercury-rich pipes, and then the mercury-rich pipes are used as a mercury-rich efficiency self-checking device.
Further, the control unit 800 makes the first mercury-rich pipe and the second mercury-rich pipe connected in series by controlling switching of different valves of the first electromagnetic valve 200 and the second electromagnetic valve 400. After the first mercury-enriching pipe and the second mercury-enriching pipe are enriched with mercury, heating and analyzing are carried out to release the mercury, and the enrichment efficiency of the first mercury-enriching pipe at the front end can be controlled by calculating the ratio of the mercury contents in the two mercury-enriching pipes.
C. The control unit 800 controls switching of different valves of the first electromagnetic valve 200 and the second electromagnetic valve 400 so that a plurality of mercury-rich tubes are connected in parallel, and simultaneously work to enrich mercury to obtain parallel samples.
Further, the control unit 800 makes the first mercury-rich pipe and the second mercury-rich pipe connected in parallel by controlling switching of different valves of the first electromagnetic valve 200 and the second electromagnetic valve 400. The first mercury enrichment pipe and the second mercury enrichment pipe work simultaneously to enrich mercury, and the accuracy of a measuring result is improved by quantitatively analyzing the mercury concentration in a parallel sample.
D. The mercury processing system is externally connected with an analysis device, and mercury enriched in the mercury processing system is heated and analyzed, so that the enriched mercury is released and sent into the analysis device, the mercury concentration is analyzed, and the mercury processing system can be used as a mercury concentration analysis pretreatment device.
Examples
As shown in fig. 2, a schematic view of a work flow of a mercury processing system according to this embodiment is provided. In fig. 2, F1 and F2 are three-way valves, F3, F4, F5, F6, F7 are two-way valves, and G1 and G2 are two mercury-rich tubes.
In this embodiment, by controlling the switching of different valves from the F1 to the F7 solenoid valves, different connection modes between G1 and G2 can be realized. The following were used:
(1) g1 and G2 work alternately. When G1 works, a gas sample flows through the gas inlet sequentially through F1, G1, F4 and F7, and then is discharged from the gas outlet. When G2 works, a gas sample flows through the gas inlet sequentially through F2, G2, F5 and F7, and then is discharged from the gas outlet.
(2) G1 and G2 are connected in parallel for operation. The gas sample flows through the gas inlet by the following route: f1 and F2 are parallel, G1 and G2 are parallel, F4 and F5 are parallel, F7 is parallel, and then the air is discharged from an air outlet.
(3) G1 and G2 work in series. The gas sample flows through F1, G1, F4, F5, G2, F2 and F6 in sequence through the gas inlet and is discharged from the gas outlet. Or the gas sample flows through F2, G2, F5, F4, G1, F1 and F3 in sequence through the gas inlet and is discharged from the gas outlet.
Finally, it should be noted that: it should be understood that the above examples are only for clearly illustrating the present invention and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications of the invention may be made without departing from the scope of the invention.
Claims (4)
1. The method for treating mercury by using the mercury treatment system is characterized in that the mercury treatment system comprises a first electromagnetic valve, a mercury enrichment unit, a second electromagnetic valve and a control unit;
a plurality of mercury enrichment pipes are arranged in the mercury enrichment unit, and mercury heating and analyzing devices are arranged in the mercury enrichment pipes;
the front ends of the multiple mercury-rich pipes are connected with the first electromagnetic valves, and the rear ends of the multiple mercury-rich pipes are connected with the second electromagnetic valves;
the control unit is used for controlling the switching of different valves of the first electromagnetic valve and the second electromagnetic valve;
the control unit controls the switching of different valves of the first electromagnetic valve and the second electromagnetic valve to enable the multiple mercury-enriched pipes to be alternately used respectively;
the control unit controls the switching of different valves of the first electromagnetic valve and the second electromagnetic valve to enable the multiple mercury-rich pipes to be connected in series;
the control unit controls the switching of different valves of the first electromagnetic valve and the second electromagnetic valve to enable the multiple mercury-enriched pipes to be connected in parallel;
the method comprises the following steps:
the control unit controls the switching of different valves of the first electromagnetic valve and the second electromagnetic valve, so that the multiple mercury-enriched pipes are alternately used respectively, and the multiple mercury-enriched pipes alternately perform mercury enrichment and mercury heating analysis;
the control unit controls the switching of different valves of the first electromagnetic valve and the second electromagnetic valve, so that the multiple mercury-rich pipes are connected in series, and the mercury enrichment efficiency of the mercury-rich pipes is verified by calculating the content of mercury enriched in the multiple mercury-rich pipes;
the control unit controls switching of different valves of the first electromagnetic valve and the second electromagnetic valve, so that the multiple mercury-rich pipes are connected in parallel, and the multiple mercury-rich pipes connected in parallel are enabled to simultaneously enrich mercury.
2. The method of claim 1, wherein the mercury processing system further comprises a flow control device,
the flow control device is connected to the second solenoid valve, and the control unit is configured to control a flow rate of gas passing through the flow control device.
3. The method of claim 2, wherein the mercury treatment system further comprises an air intake and an exhaust;
the air inlet device is connected with the first electromagnetic valve, and the exhaust device is connected with the flow control device.
4. The method of claim 3, wherein the mercury processing system further comprises a gas extraction device;
the air extraction device is arranged between the flow control device and the exhaust device.
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| CN201911106240.9A CN110898602B (en) | 2019-11-13 | 2019-11-13 | Mercury treatment system and treatment method |
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| CN201911106240.9A CN110898602B (en) | 2019-11-13 | 2019-11-13 | Mercury treatment system and treatment method |
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| CN110898602B true CN110898602B (en) | 2022-06-17 |
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| CN113720667B (en) * | 2021-09-02 | 2022-09-06 | 苏州幻宝安全与环境工程有限公司 | Water sample treatment system and method for environmental monitoring |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103592451A (en) * | 2013-11-29 | 2014-02-19 | 北京雪迪龙科技股份有限公司 | Gaseous mercury monitoring system and control method thereof |
| CN203572711U (en) * | 2013-11-28 | 2014-04-30 | 北京雪迪龙科技股份有限公司 | Hg enriching device and Hg monitoring system |
| CN105296037A (en) * | 2015-11-23 | 2016-02-03 | 新疆石油工程设计有限公司 | Natural gas continuous mercury removal high efficiency adsorption apparatus and application method |
| WO2016183581A2 (en) * | 2015-05-14 | 2016-11-17 | Chevron U.S.A. Inc. | Process, method, and system for removing mercury from fluids |
| CN108776194A (en) * | 2018-04-03 | 2018-11-09 | 力合科技（湖南）股份有限公司 | Analytical equipment and gas analyzer |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2367818C (en) * | 2001-01-18 | 2010-05-11 | Electric Power Research Institute, Inc. | Method and apparatus for renewable mercury sorption |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203572711U (en) * | 2013-11-28 | 2014-04-30 | 北京雪迪龙科技股份有限公司 | Hg enriching device and Hg monitoring system |
| CN103592451A (en) * | 2013-11-29 | 2014-02-19 | 北京雪迪龙科技股份有限公司 | Gaseous mercury monitoring system and control method thereof |
| WO2016183581A2 (en) * | 2015-05-14 | 2016-11-17 | Chevron U.S.A. Inc. | Process, method, and system for removing mercury from fluids |
| CN105296037A (en) * | 2015-11-23 | 2016-02-03 | 新疆石油工程设计有限公司 | Natural gas continuous mercury removal high efficiency adsorption apparatus and application method |
| CN108776194A (en) * | 2018-04-03 | 2018-11-09 | 力合科技（湖南）股份有限公司 | Analytical equipment and gas analyzer |
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