CN219870523U - Multi-point switchable flue gas mercury monitoring gas circuit system - Google Patents
Multi-point switchable flue gas mercury monitoring gas circuit system Download PDFInfo
- Publication number
- CN219870523U CN219870523U CN202321284992.6U CN202321284992U CN219870523U CN 219870523 U CN219870523 U CN 219870523U CN 202321284992 U CN202321284992 U CN 202321284992U CN 219870523 U CN219870523 U CN 219870523U
- Authority
- CN
- China
- Prior art keywords
- port
- gas
- way valve
- vacuum pump
- gas circuit
- 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.)
- Active
Links
- 239000007789 gas Substances 0.000 title claims abstract description 82
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 title claims abstract description 27
- 229910052753 mercury Inorganic materials 0.000 title claims abstract description 27
- 238000012544 monitoring process Methods 0.000 title claims abstract description 23
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 15
- 239000003546 flue gas Substances 0.000 title claims abstract description 15
- 238000005070 sampling Methods 0.000 claims abstract description 31
- 238000007664 blowing Methods 0.000 claims abstract description 26
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 21
- 238000001514 detection method Methods 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 238000010926 purge Methods 0.000 abstract description 3
- 239000003245 coal Substances 0.000 description 4
- 238000003723 Smelting Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000001228 spectrum Methods 0.000 description 2
- 241000221026 Mercurialis annua Species 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 239000002803 fossil fuel Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000002906 medical waste Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
Landscapes
- Sampling And Sample Adjustment (AREA)
Abstract
The utility model discloses a multi-point switchable flue gas mercury monitoring gas circuit system, which comprises the following components: the sampling gas circuit comprises a three-way valve A, a three-way valve B and a vacuum pump A; the vacuum pump A is connected with a plurality of sampling electromagnetic valves; the NO port of the three-way valve B is connected to the vacuum pump A; the NC port of the three-way valve B is connected with the standard gas port; the COM port of the three-way valve B is connected with the NO port of the three-way valve A; the NC port of the three-way valve A is connected with the zero port; the COM port of the three-way valve A is connected with the sample tank; one end of the vacuum pump B is connected with the sample pool, and the other end of the vacuum pump B is connected with the exhaust port. According to the utility model, zero gas, sample gas and standard gas can be extracted from the sample cell under the action of the vacuum pump, a plurality of discharge points can be connected at the same time, and the switching of the monitoring points is realized by switching the state of the electromagnetic valve. And when the sampling is stopped, back-blowing gas is introduced to purge, so that the sampling port can be effectively prevented from being blocked.
Description
Technical Field
The utility model belongs to the technical field of flue gas monitoring, and particularly relates to a multi-point switchable flue gas mercury monitoring gas circuit system.
Background
Mercury is one of heavy metal elements with extremely strong toxicity in the environment, and has great harm to human health. The world is the country with the largest mercury consumption and the country with large mercury emission, the annual mercury emission is about 500-700 tons/year, and the combustion of fossil fuel, the incineration of municipal waste and medical waste, nonferrous metal smelting, chlor-alkali industry, cement manufacturing, the activities of gold and mercury smelting by the earth method, the use of natural gas and the like can cause mercury pollution to the atmosphere. The mercury released by artificial activity to the atmosphere was estimated to be about 643 tons in our country, with 53% of the total amount of mercury released by the coal used in power plants and boilers. The average amount of mercury in each kilogram of coal in China is 0.15-0.22 mg, and the release rate of coal-fired mercury is over 99 percent for common pulverized coal furnaces in domestic power plants, so that a large amount of mercury is discharged by using a large amount of coal in China, and serious mercury pollution is formed.
The traditional mercury measuring equipment can only monitor one emission point by one equipment, and a plurality of mercury measuring equipment are required to be installed for the same emission area and multi-point monitoring, so that the purchasing cost is increased and the use, management and maintenance are not facilitated. The utility model provides a multi-point switchable flue gas mercury monitoring gas circuit system, which can realize automatic switching of monitoring points through one piece of equipment and selectively conduct directional monitoring on a certain point.
Disclosure of Invention
The utility model aims to provide a multi-point switchable flue gas mercury monitoring gas circuit system which consists of a pretreatment gas circuit and a rear end discharge gas circuit, wherein zero gas, sample gas and standard gas can be extracted from a sample cell under the action of a vacuum pump, a plurality of discharge points can be connected at the same time, and the switching of the monitoring points is realized by switching the state of an electromagnetic valve. And when the sampling is stopped, back-blowing gas is introduced to purge, so that the sampling port can be effectively prevented from being blocked.
In order to solve the technical problems, the utility model is realized by the following technical scheme:
the utility model relates to a multi-point switchable flue gas mercury monitoring gas circuit system, which comprises a pretreatment gas circuit for extracting zero gas, sample gas and standard gas into a sample cell for detection, wherein the pretreatment gas circuit comprises a sampling gas circuit; the sampling gas circuit comprises a three-way valve A, a three-way valve B and a vacuum pump A; the vacuum pump A is connected with a plurality of sampling electromagnetic valves; the NO port of the three-way valve B is connected to the vacuum pump A through a filter; the NC port of the three-way valve B is connected with the standard gas port through a filter; the COM port of the three-way valve B is connected with the NO port of the three-way valve A; the NC port of the three-way valve A is connected with the zero gas port through the filter and the activated carbon tank in sequence; the COM port of the three-way valve A is connected with the sample tank through a filter; the rear end exhaust gas circuit is used for exhausting the gas detected by the sample cell and comprises a vacuum pump B, one end of the vacuum pump B is connected with the sample cell, and the other end of the vacuum pump B is connected with an exhaust port through an activated carbon tank to exhaust the gas.
Further, the pretreatment air circuit further comprises a back blowing air circuit, the back blowing air circuit comprises a back blowing port for providing back blowing air, and the back blowing port is connected with the sampling air circuit.
Further, an electromagnetic valve A for controlling a back-blowing opening switch is also arranged on the back-blowing opening.
Further, an electromagnetic valve B is arranged at the port of the vacuum pump A, and the NO port of the three-way valve B is connected to the intermediate connection point of the vacuum pump A and the electromagnetic valve B.
Further, the three-way valve A and the three-way valve B are stainless steel high-temperature valves.
The utility model has the following beneficial effects:
1. the utility model is composed of a pretreatment gas circuit and a rear end discharge gas circuit, zero gas, sample gas and standard gas can be extracted from a sample cell under the action of a vacuum pump, a plurality of discharge points can be connected at the same time, and the state of an electromagnetic valve is switched to realize the switching of monitoring points. And when the sampling is stopped, back-blowing gas is introduced to purge, so that the sampling port can be effectively prevented from being blocked.
2. When the utility model discharges gas, the active carbon filters to prevent the poisonous and harmful gas from entering the atmosphere. And the safety of sampling and calibration is ensured. And the action logic of the electromagnetic valve and the three-way valve of the gas circuit system is simple and easy to control, so that the reliable operation of the system is ensured, and the mass production can be realized.
Of course, it is not necessary for any one product to practice the utility model to achieve all of the advantages set forth above at the same time.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a system block diagram of a multi-point switchable flue gas mercury monitoring gas circuit system.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1, the utility model provides a multi-point switchable flue gas mercury monitoring gas circuit system, which comprises a pretreatment gas circuit for extracting zero gas, sample gas and standard gas into a sample cell for detection and a rear end discharge gas circuit for discharging the gas detected by the sample cell;
the pretreatment gas circuit comprises a sampling gas circuit and a back blowing gas circuit; the sampling gas circuit comprises a three-way valve A10, a three-way valve B19 and a vacuum pump A15; the vacuum pump A15 is connected with the first sampling electromagnetic valve 1, the second sampling electromagnetic valve 2, the third sampling electromagnetic valve 3 and the first sampling electromagnetic valve N4; monitoring a plurality of point positions through a plurality of sampling electromagnetic valves; the NO port of the three-way valve B19 is connected to the vacuum pump A15 through a filter 17; a solenoid valve B14 is arranged at the port of the vacuum pump A15, and the NO port of the three-way valve B19 is connected to the middle connection point of the vacuum pump A15 and the solenoid valve B14;
the NC port of the three-way valve B19 is connected with the standard gas port 16 through a filter 18; the COM port of the three-way valve B19 is connected with the NO port of the three-way valve A10;
the back blowing air circuit comprises a back blowing port 5 for providing back blowing air, and the back blowing port 5 is connected with the sampling air circuit; the back-blowing port 5 is also provided with an electromagnetic valve A6 for controlling the back-blowing port 5 to be opened and closed;
the NC port of the three-way valve A10 is connected with the zero port 7 through the filter 9 and the activated carbon tank 8 in sequence; the COM port of the three-way valve A10 is connected with the sample tank 12 through the filter 11; the three-way valve A10 and the three-way valve B19 are stainless steel high-temperature valves;
the rear end exhaust gas path comprises a vacuum pump B13, one end of the vacuum pump B13 is connected with the sample cell 12, and the other end of the vacuum pump B13 is connected with an exhaust port 21 through an activated carbon tank 20 to exhaust gas.
Embodiment one:
when the sampling gas circuit works, the NO port and the COM port of the three-way valve A10 and the three-way valve 19B are communicated, the electromagnetic valve A6 is closed, and the electromagnetic valve B14 is opened; according to the sampling requirement, one path of the sampling electromagnetic valve is opened, and the other paths are closed. Under the negative pressure of the vacuum pump 13B, the sample gas enters the sample cell 12 through a certain path of opened sampling electromagnetic valve, an electromagnetic valve B14, a three-way valve B19 of the filter 17, a three-way valve S10 and the filter 11, and is discharged through the vacuum pump B13, the activated carbon tank 20 and the exhaust port 21. The working state at this time is real-time on-line monitoring of the system.
Embodiment two:
when the zero gas path works, the three-way valve B19 is closed, the NC port of the three-way valve A10 is communicated with the COM port, and zero gas enters the sample tank 12 from the zero gas port 7, the activated carbon tank 8, the filter 9, the three-way valve A10 and the filter 11 and is discharged through the vacuum pump B13, the activated carbon tank 20 and the exhaust port 21. The operating state at this time is the calibration zero spectrum of the system.
Embodiment III:
when the gas marking path works, the NO port of the three-way valve A10 is communicated with the COM port, and the NC port of the three-way valve B19 is communicated with the COM port. The standard gas enters the sample cell 12 through the filter 18, the three-way valve B19, the three-way valve A10 and the filter 11, and is discharged through the vacuum pump B13, the activated carbon canister 20 and the exhaust port 21. The working state at this time is the calibration standard spectrum of the system.
Embodiment four:
when the back blowing air circuit works, the electromagnetic valve A6 is opened, the electromagnetic valve B14 is closed, and one or more paths of sampling electromagnetic valves are opened. The back blowing air enters the opened sampling electromagnetic valve through the back blowing opening 5 and the electromagnetic valve A6. The working state at this time is back flushing cleaning of the system.
In the description of the present specification, the descriptions of the terms "one embodiment," "example," "specific example," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the utility model disclosed above are intended only to assist in the explanation of the utility model. The preferred embodiments are not exhaustive or to limit the utility model to the precise form disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the utility model and the practical application, to thereby enable others skilled in the art to best understand and utilize the utility model. The utility model is limited only by the claims and the full scope and equivalents thereof.
Claims (5)
1. A multi-point switchable flue gas mercury monitoring gas circuit system is characterized by comprising
The pretreatment gas circuit is used for extracting zero gas, sample gas and standard gas into the sample cell for detection, and comprises a sampling gas circuit;
the sampling gas circuit comprises a three-way valve A, a three-way valve B and a vacuum pump A; the vacuum pump A is connected with a plurality of sampling electromagnetic valves; the NO port of the three-way valve B is connected to the vacuum pump A through a filter; the NC port of the three-way valve B is connected with the standard gas port through a filter; the COM port of the three-way valve B is connected with the NO port of the three-way valve A;
the NC port of the three-way valve A is connected with the zero gas port through the filter and the activated carbon tank in sequence; the COM port of the three-way valve A is connected with the sample tank through a filter;
the rear end exhaust gas circuit is used for exhausting the gas detected by the sample cell and comprises a vacuum pump B, one end of the vacuum pump B is connected with the sample cell, and the other end of the vacuum pump B is connected with an exhaust port through an activated carbon tank to exhaust the gas.
2. The multi-point switchable flue gas mercury monitoring gas circuit system of claim 1, wherein the pretreatment gas circuit further comprises a back-blowing gas circuit comprising a back-blowing port for providing back-blowing gas, the back-blowing port being connected with the sampling gas circuit.
3. The multi-point switchable flue gas mercury monitoring gas circuit system according to claim 2, wherein the back-blowing port is further provided with a solenoid valve A for controlling a back-blowing port switch.
4. The multi-point switchable flue gas mercury monitoring gas circuit system according to claim 1, wherein an electromagnetic valve B is installed at a port of the vacuum pump A, and a NO port of the three-way valve B is connected to an intermediate connection point of the vacuum pump A and the electromagnetic valve B.
5. The multi-point switchable flue gas mercury monitoring gas circuit system according to claim 1, wherein the three-way valve A and the three-way valve B are stainless steel high-temperature valves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321284992.6U CN219870523U (en) | 2023-05-25 | 2023-05-25 | Multi-point switchable flue gas mercury monitoring gas circuit system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321284992.6U CN219870523U (en) | 2023-05-25 | 2023-05-25 | Multi-point switchable flue gas mercury monitoring gas circuit system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219870523U true CN219870523U (en) | 2023-10-20 |
Family
ID=88337060
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321284992.6U Active CN219870523U (en) | 2023-05-25 | 2023-05-25 | Multi-point switchable flue gas mercury monitoring gas circuit system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219870523U (en) |
-
2023
- 2023-05-25 CN CN202321284992.6U patent/CN219870523U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN212663210U (en) | Bury formula sewage treatment plant combination deodorizing device | |
| CN219870523U (en) | Multi-point switchable flue gas mercury monitoring gas circuit system | |
| CN106348456A (en) | Canal water pollution superior microorganism in-situ ecological restoration method | |
| CN203643216U (en) | Washing device for gas detection probe | |
| CN210719857U (en) | Dioxin on-line monitoring sampling system | |
| CN206285719U (en) | Domestic garbage treatment plant workshop pollutant intelligent processing system | |
| CN211799872U (en) | Waste gas collecting device of semi-blind flow plate-and-frame filter press | |
| CN115121145B (en) | High-concentration explosive organic gas thermal oxidation air premixing explosion-proof system | |
| CN215445163U (en) | Lifting valve for gas switching air channel | |
| CN111151525A (en) | Automatic cleaning and anti-blocking device for sludge drying and deodorizing pipeline | |
| CN205164442U (en) | Waste gas processing system | |
| CN211799735U (en) | Novel dry desulfurization dust removal device | |
| CN210674773U (en) | Flue gas treatment system of waste incineration power plant | |
| CN207748910U (en) | A kind of novel air-water separating device | |
| CN210385391U (en) | Multi-cavity low-temperature plasma flue gas purification device | |
| CN206747243U (en) | A kind of MSW Incineration Plant garbage pool vacuum control system | |
| CN221166108U (en) | Adsorption device for continuously and circularly treating landfill leachate | |
| CN209113540U (en) | A kind of multi-stage sewage processing system that online backwashing function can be achieved | |
| CN213699446U (en) | Low temperature waste incinerator flue gas treatment equipment | |
| CN219867395U (en) | Factory volatile organic compound processing apparatus | |
| CN214345554U (en) | Tail gas processing apparatus for chemical engineering | |
| CN221803531U (en) | Online sampling device | |
| CN214415665U (en) | Waste gas drainage leak protection device | |
| CN221252900U (en) | Electrostatic precipitator ash conveying device for preventing coal gas explosion venting | |
| CN2650106Y (en) | Gas on-line automatic sampling device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |