CN111751174A - Device and method for sampling hydrogen chloride in flue gas of coal-fired unit - Google Patents
Device and method for sampling hydrogen chloride in flue gas of coal-fired unit Download PDFInfo
- Publication number
- CN111751174A CN111751174A CN202010771750.4A CN202010771750A CN111751174A CN 111751174 A CN111751174 A CN 111751174A CN 202010771750 A CN202010771750 A CN 202010771750A CN 111751174 A CN111751174 A CN 111751174A
- Authority
- CN
- China
- Prior art keywords
- sampling
- way valve
- coal
- sampling gun
- hydrogen chloride
- 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
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N1/24—Suction devices
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N1/2202—Devices for withdrawing samples in the gaseous state involving separation of sample components during sampling
- G01N1/2205—Devices for withdrawing samples in the gaseous state involving separation of sample components during sampling with filters
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N1/2247—Sampling from a flowing stream of gas
- G01N1/2258—Sampling from a flowing stream of gas in a stack or chimney
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N1/2247—Sampling from a flowing stream of gas
- G01N1/2258—Sampling from a flowing stream of gas in a stack or chimney
- G01N2001/2261—Sampling from a flowing stream of gas in a stack or chimney preventing condensation (heating lines)
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Molecular Biology (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention relates to a device for sampling hydrogen chloride in flue gas of a coal-fired unit, which comprises a sampling cover, a sampling gun rod, a locking valve, a depth positioning ring, a heating box, a membrane filter, a silicone tube, a sampling pump front three-way valve, a chemical titration sampling pump, a glass absorption bottle, a refrigerator, a front three-way valve and a sampling gun inner tube, wherein the sampling gun rod is arranged in the sampling gun rod; the sampling cover is in threaded connection with the sampling gun rod, a sampling gun inner tube is arranged in the sampling gun rod, and the sampling cover is used as a fixing part for the head of the sampling gun inner tube; the depth positioning ring is fixed on the sampling gun rod through a locking valve; the rear part of the sampling gun rod is connected with a heating box; in the heating box, an inner tube of the sampling gun, a membrane filter and a preposed three-way valve are sequentially connected in series; the heating box is exposed out of the two joints of the preposed three-way valve. The invention has the beneficial effects that: the connecting pipeline of the invention carries out whole-process heat tracing, reduces the loss amount of HCl sampling, and avoids the phenomenon that HCl is adsorbed in advance and the final measurement result is low due to condensation before water vapor enters the absorption bottle.
Description
Technical Field
The invention relates to a sampling device, in particular to a device and a method for sampling hydrogen chloride in flue gas of a coal-fired unit.
Background
In the coal-fired power generation process, trace elements such as chlorine in coal can be released and enter flue gas in the boiler combustion process, and at present, a coal-fired unit in China has no equipment specially used for treating HCl in the flue gas, and wet desulphurization is usually utilized for removing the HCl in a synergistic manner. At present, the measuring equipment for fixing HCl in the pollution source waste gas mainly has an on-line direct measuring and manual sampling mode. In which the direct measurement on-line utilizes optical methods such as fourier infrared, etc. The manual sampling is mainly based on HJ 548-2016 (fixed pollutant source waste gas hydrogen chloride determination method) and HJ 549-2016 (environmental air and waste gas hydrogen chloride determination ion chromatography). The schematic diagram of the standard sampling device is shown in fig. 3. The sample is detected by using a potentiometric titrator and an ion chromatograph, the component of the sample and the control of the sampling process can influence the final detection result, and the interference of various factors in the sampling process needs to be eliminated.
There is a patent application number 201820281949.7 "a hydrogen chloride sampling device" for an artificial sampling device. The main structure of the patent is consistent with the requirements for the sampling device in HJ 548-. This patent has solved the material and has not resisted acid and alkali corrosion scheduling problem to avoided in the part sampling pipeline steam absorption HC to influence the result accuracy, avoided the particulate matter to a certain extent to device (filter membrane low reaches device) life influence. However, the technique still has some defects and can be improved, and the influence of interference items in the sampling process on the result accuracy needs to be further avoided.
In summary, there is a need to develop a device and a method for sampling hydrogen chloride in flue gas of a coal-fired unit.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides a device and a method for sampling hydrogen chloride in flue gas of a coal-fired unit.
The device for sampling the hydrogen chloride in the flue gas of the coal-fired unit comprises a sampling cover, a sampling gun rod, a locking valve, a depth positioning ring, a heating box, a membrane filter, a silicone tube, a sampling pump front three-way valve, a chemical titration sampling pump, a glass absorption bottle, a refrigerator, a front three-way valve and a sampling gun inner tube; the sampling cover is in threaded connection with the sampling gun rod, a sampling gun inner tube is arranged in the sampling gun rod, and the sampling cover is used as a fixing part for the head of the sampling gun inner tube; the depth positioning ring is fixed on the sampling gun rod through a locking valve; the rear part of the sampling gun rod is connected with a heating box; in the heating box, an inner tube of the sampling gun, a membrane filter and a preposed three-way valve are sequentially connected in series; the heating box is exposed out of two joints of the preposed three-way valve and is respectively connected to the front three-way valve of the sampling pump and the glass absorption bottle through a silicone tube; the two glass absorption bottles are connected through a silicone tube and are placed in an ice bath box groove; the glass absorption bottle is connected to the front three-way valve of the sampling pump through a silicone tube; the three-way valve in front of the sampling pump is connected to the chemical titration sampling pump through a silicone tube; an electric heating tracing band is wound outside the silica gel tube.
Preferably, the method comprises the following steps: the sampling gun rod is made of stainless steel, and length scales are engraved on the outer surface of the sampling gun rod; a heating belt is arranged between the sampling gun rod and the inner tube of the sampling gun.
Preferably, the method comprises the following steps: and glass wool is arranged between the sampling cover and the head of the inner tube of the sampling gun.
Preferably, the method comprises the following steps: and the outlet of the preposed three-way valve and the inlet of the front three-way valve of the sampling pump are both provided with switch valves.
Preferably, the method comprises the following steps: the chemical titration sampling pump is provided with a digital display screen.
Preferably, the method comprises the following steps: the temperature controller is connected with the sampling gun rod and the heating box and is provided with a temperature control unit.
Preferably, the method comprises the following steps: the inner tube of the sampling gun is made of tetrafluoroethylene material.
Preferably, the method comprises the following steps: the membrane filter is internally provided with an acetate fiber microporous filter membrane.
Preferably, the method comprises the following steps: the two glass absorption bottles are connected in series, and deionized water and sodium hydroxide solution are respectively arranged in the two glass absorption bottles.
The sampling method of the device for sampling the hydrogen chloride in the flue gas of the coal-fired unit comprises the following steps:
s1, implementing a sampling process on the specific section of the flue of the coal-fired unit; firstly, connecting a sampling device, sequentially connecting two glass absorption bottles, a sampling pump front three-way valve and a chemical titration sampling pump by using a silicone tube at an outlet of a front three-way valve, and winding an electric heating tracing band outside the silicone tube for electrifying and heating; placing the two glass absorption bottles in an ice bath box groove for fixing;
s2, starting a chemical titration sampling pump to check air tightness, determining sampling point arrangement according to sampling standards after no abnormity occurs, moving a depth positioning ring to a specific position, fixing by using a locking valve, and then integrally inserting a sampling gun rod into a sampling hole;
s3, connecting a temperature controller to the sampling gun rod and the heating box, and starting preheating after setting a heating target temperature; after preheating is finished, setting sampling flow and sampling duration, and starting a chemical titration sampling pump;
s4, in the sampling process, adding deionized water and sodium hydroxide solution into a second group of glass absorption bottles respectively, connecting the deionized water and the sodium hydroxide solution into the position of a silicone tube between a front three-way valve and a front three-way valve of a sampling pump, switching a gas circuit through a switch valve after the front group of samples are collected, and restarting a chemical titration sampling pump to sample the next group of samples; and combining the absorption liquid in the glass absorption bottle after sampling, pouring the combined absorption liquid into the sampling bottle, cleaning the glass absorption bottle and the inner wall surface of the silicone tube by using deionized water, pouring the cleaning liquid into the sampling bottle, sealing and storing at low temperature, and detecting as soon as possible.
The invention has the beneficial effects that:
1. the connecting pipeline of the invention carries out whole-process heat tracing, reduces the loss amount of HCl sampling, and avoids the phenomenon that HCl is adsorbed in advance and the final measurement result is low due to condensation before water vapor enters the absorption bottle.
2. The glass wool is arranged, so that particles are prevented from being deposited in the sampling gun, the inner wall of the sampling gun is clean and smooth, and the service life of the sampling device is prolonged.
3. The invention adopts the water + alkali liquor series connection mode for sampling, chlorine is not easy to dissolve in water, the hydrolysis reaction is greatly influenced by the pH value of absorption liquid and the concentration of chlorine radicals, the neutral condition is favorable for reducing the formation of chloride ions after hydrolysis, and the positive interference of chlorine is effectively reduced.
4. According to the invention, the structure of the sampling connecting part is optimized through the three-way valve, the parallel gas path structure is utilized, the next group of absorption bottles can be prepared and connected into the system for standby when the previous group of samples are sampled, the gas path switching is completed through the valve switch, and the manual sampling time is shortened.
Drawings
FIG. 1 is a schematic diagram of a device for sampling hydrogen chloride in flue gas of a coal-fired unit (shown by the cross section of an outlet of a single-side denitration reactor of the coal-fired unit);
FIG. 2 is a schematic view of the inner tube of the sampling gun;
fig. 3 is a schematic diagram of a conventional sampling apparatus.
Description of reference numerals: sampling lid 1, sampling rifle pole 2, locking valve 3, degree of depth holding ring 4, heating box 5, membrane filter 6, silicone tube 7, three-way valve 8 before the sampling pump, chemical titration sampling pump 9, glass absorption bottle 10, ice bath case 11, leading three-way valve 12, temperature controller 13, sampling rifle inner tube 14, sampling pipe 15 of taking heating device, filter membrane cover 16, condensing equipment 17, absorption liquid 18, the pitot tube 19 of taking pressure and warm and humid acidimeter.
Detailed Description
The present invention will be further described with reference to the following examples. The following examples are set forth merely to aid in the understanding of the invention. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Example one
As shown in fig. 1, a device for sampling hydrogen chloride in flue gas of a coal-fired unit is provided in the embodiment of the present application, and includes a sampling cover 1, a sampling gun rod 2, a locking valve 3, a depth positioning ring 4, a heating box 5, a membrane filter 6, a silicone tube 7, a sampling pump front three-way valve 8, a chemical titration sampling pump 9, a glass absorption bottle 10, an ice bath tank 11, a front three-way valve 12, a temperature controller 13, and a sampling gun inner tube 14. According to the way of sampling smoke flowing, a sampling cover 1 is in threaded connection with a sampling gun rod 2, a sampling gun inner tube 14 is arranged in the sampling gun rod 2, and the sampling cover 1 is used as a head fixing part of the sampling gun inner tube 14; the depth positioning ring 4 can slide on the sampling gun rod 2 to a specific position, and the depth positioning ring 4 is fixed through the locking valve 3; the rear part of the sampling gun rod 2 is connected with a heating box 5; in the heating box 5, an inner tube 14 of the sampling gun, the membrane filter 6 and the preposed three-way valve 12 are sequentially connected in series; the heating box 5 is exposed out of two joints of a front three-way valve 12 and is respectively connected to a front three-way valve 8 of the sampling pump and a glass absorption bottle 10 through a silicone tube 7; the two glass absorption bottles 10 are connected through a silicone tube 7 and are placed in a groove of a refrigerator bath 11; the glass absorption bottle 10 is connected to a front three-way valve 8 of the sampling pump through a silicone tube 7; the sampling pump front three-way valve 8 is connected to a chemical titration sampling pump 9 through a silicone tube 7; an electric heating tracing band is wound outside the silicone tube 7, so that the HCl loss caused by condensation of sample gas before the sample gas enters the glass absorption bottle is avoided.
2 external diameters of sampling rifle bar 36mm, long 3000mm, stainless steel, the surface is carved with the length scale, and the sampling personnel of being convenient for arrange the sampling point position degree of depth according to the sampling requirement. And a heating belt is arranged between the sampling gun rod 2 and the sampling gun inner tube 14 to heat the sampling gun inner tube 14.
Glass wool is filled between the sampling cover 1 and the head of the inner tube 14 of the sampling gun to pre-filter particles in the sampling smoke.
4 diameters 200mm of degree of depth holding ring for the location sampling point degree of depth can be used for sealed sampling hole simultaneously, avoids the rifle body to swing by a wide margin in the sampling process.
And the outlet of the preposed three-way valve 12 and the inlet of the sampling pump front three-way valve 8 are both provided with switch valves, and sampling gas circuits can be freely switched through cooperative operation.
An electric heating tracing band is wound outside the silicone tube 7, so that the HCl loss caused by condensation of sample gas before the sample gas enters the glass absorption bottle is avoided.
The silicone tube 7 can be used for extracting flue gas in advance and sealing a sampling gas circuit, so that the flue gas is ensured to be filled with the inner tube 14 of the sampling gun in advance, and the accuracy of a sampling result is further improved. And in the subsequent sampling process, the silicone tube 7 connects the second group of glass absorption bottles to the sampling device in advance, and the front and rear three-way valve switch valves are directly opened to switch the gas circuit to collect the second group of samples after the collection of the front group of samples is finished, so that the sampling time is saved.
The chemical titration sampling pump 9 is provided with a digital display screen for displaying real-time sampling pressure and gas flow, setting sampling duration and sampling flow (0.5L/min-5L/min), and storing and recording information such as sampling time, sampling accumulated standard dry volume and the like.
The temperature controller 13 is connected with the sampling gun rod 2 and the heating box 5, the temperature controller 13 is provided with a temperature control unit, the heating temperature (100 ℃ -180 ℃) can be set, and the temperature in the sampling gun inner tube 14 and the heating box 5 is displayed in a digital mode.
The sampling gun inner tube 14 adopts the tetrafluoroethylene material, and internal diameter 6mm, external diameter 10 mm.
The membrane filter 6 is internally provided with an acetate fiber microporous filter membrane with the aperture of 0.3 mu m.
The two glass absorption bottles 10 are connected in series, the specification is 75mL, 50mL of deionized water and 50mL of 0.10mol/L sodium hydroxide solution are respectively arranged in the two glass absorption bottles 10, and the combined absorption liquid can effectively reduce the interference of chlorine. Because the subsequent measurement process needs to add hydrogen peroxide to eliminate the interference of sulfur dioxide and sulfide in the waste gas, if the common alkali liquor is adopted for serial absorption, chlorine is hydrolyzed in the alkali liquor to generate hypochlorite, and the hydrogen peroxide and the hypochlorite are easy to react to generate chloride to influence the measurement result.
Example two
The embodiment of the application provides a sampling method of a device for sampling hydrogen chloride in flue gas of a coal-fired unit, which comprises the following steps:
s1, the hydrogen chloride sampling method uses a self-made hydrogen chloride sampling device to implement a sampling process on a specific section of a flue of a coal-fired unit. Firstly, as shown in figure 1, a sampling device is connected, a silicone tube 7 for an outlet of a preposed three-way valve 12 is sequentially connected with a glass absorption bottle 10(50ml deionized water), a glass absorption bottle 10(50ml 0.10mol/L sodium hydroxide solution), a three-way valve 8 in front of a sampling pump and a chemical titration sampling pump 9, and an electric heating tracing band is wound outside the silicone tube 7 for electrifying and heating. Two glass absorption bottles 10 are placed in a bath tank 11 and fixed.
S2, starting the chemical titration sampling pump 9 to check air tightness, determining the arrangement of sampling points according to sampling standards after no abnormity, moving the depth positioning ring 4 to a specific position, fixing by using the locking valve 3, and then integrally inserting the sampling gun rod 2 into the sampling hole to ensure the good sealing of the sampling hole.
S3, connecting the temperature controller 13 to the sampling gun rod 2 and the heating box 5, and starting preheating after setting the heating target temperature to be 120 ℃. When the preheating is finished, setting the sampling flow rate to be 0.5L/min-1L/min and the sampling time length to be 1h, and starting the chemical titration sampling pump 9.
S4, in the sampling process, 50ml of deionized water and 50ml of 0.10mol/L sodium hydroxide solution can be respectively added into the second group of glass absorption bottles 10, the glass absorption bottles are connected to the position of the silicone tube 7 between the front three-way valve 12 and the front three-way valve 8 of the sampling pump, the gas circuit is switched after the previous group of samples are collected, and the chemical titration sampling pump 9 is restarted to perform the next group of samples. And combining the absorption liquid in the glass absorption bottle 10 which is subjected to sampling, pouring the combined absorption liquid into a 250ml sampling bottle, cleaning the glass absorption bottle 10 and the inner wall surfaces of the front silicone tube and the rear silicone tube by using deionized water, pouring the cleaning liquid into the sampling bottle together, sealing and storing at low temperature, and detecting as soon as possible.
This patent has avoided the particulate matter to get into the sampling pipe, reduces flying dust deposit pipe wall, guarantees that the sampling pipe is intraductal clean and tidy, extension sampling device life. The condensation of water vapor before the water vapor enters the absorption bottle is avoided, HCl is easy to dissolve in water, and condensate can generate negative interference. The water and alkali liquor series connection mode is adopted for sampling, so that chlorine is inhibited from dissolving in the absorption liquid, and positive interference generated by the chlorine is avoided. This patent has improved sampling efficiency, can prepare the absorption bottle combination of next group's sampling in advance simultaneously at the sampling.
Claims (10)
1. The utility model provides a hydrogen chloride sampling device in coal-fired unit flue gas which characterized in that: the device comprises a sampling cover (1), a sampling gun rod (2), a locking valve (3), a depth positioning ring (4), a heating box (5), a membrane filter (6), a silicone tube (7), a sampling pump front three-way valve (8), a chemical titration sampling pump (9), a glass absorption bottle (10), an ice bath box (11), a front three-way valve (12) and a sampling gun inner tube (14); the sampling cover (1) is in threaded connection with the sampling gun rod (2), a sampling gun inner tube (14) is arranged in the sampling gun rod (2), and the sampling cover (1) is used as a head fixing part of the sampling gun inner tube (14); the depth positioning ring (4) is fixed on the sampling gun rod (2) through the locking valve (3); the rear part of the sampling gun rod (2) is connected with a heating box (5); in the heating box (5), an inner tube (14) of the sampling gun, a membrane filter (6) and a preposed three-way valve (12) are connected in series in sequence; the heating box (5) is exposed out of two joints of a front three-way valve (12) and is respectively connected to a front three-way valve (8) of a sampling pump and a glass absorption bottle (10) through a silicone tube (7); the two glass absorption bottles (10) are connected through a silicone tube (7) and are arranged in a groove of an ice bath box (11); the glass absorption bottle (10) is connected to a front three-way valve (8) of the sampling pump through a silicone tube (7); a front three-way valve (8) of the sampling pump is connected to a chemical titration sampling pump (9) through a silicone tube (7); an electric heating tracing band is wound outside the silicone tube (7).
2. The device for sampling the hydrogen chloride in the flue gas of the coal-fired unit according to claim 1, characterized in that: the sampling gun rod (2) is made of stainless steel, and length scales are engraved on the outer surface of the sampling gun rod; a heating belt is arranged between the sampling gun rod (2) and the sampling gun inner tube (14).
3. The device for sampling the hydrogen chloride in the flue gas of the coal-fired unit according to claim 1, characterized in that: and glass wool is arranged between the sampling cover (1) and the head of the inner tube (14) of the sampling gun.
4. The device for sampling the hydrogen chloride in the flue gas of the coal-fired unit according to claim 1, characterized in that: and the outlet of the preposed three-way valve (12) and the inlet of the sampling pump front three-way valve (8) are both provided with switch valves.
5. The device for sampling the hydrogen chloride in the flue gas of the coal-fired unit according to claim 1, characterized in that: the chemical titration sampling pump (9) is provided with a digital display screen.
6. The device for sampling the hydrogen chloride in the flue gas of the coal-fired unit according to claim 1, characterized in that: the temperature controller (13) is connected with the sampling gun rod (2) and the heating box (5), and the temperature controller (13) is provided with a temperature control unit.
7. The device for sampling the hydrogen chloride in the flue gas of the coal-fired unit according to claim 1, characterized in that: the inner tube (14) of the sampling gun is made of tetrafluoroethylene material.
8. The device for sampling the hydrogen chloride in the flue gas of the coal-fired unit according to claim 1, characterized in that: the membrane filter (6) is internally provided with an acetate fiber microporous filter membrane.
9. The device for sampling the hydrogen chloride in the flue gas of the coal-fired unit according to claim 1, characterized in that: the two glass absorption bottles (10) are connected in series, and deionized water and sodium hydroxide solution are respectively arranged in the two glass absorption bottles (10).
10. The sampling method of the device for sampling the hydrogen chloride in the flue gas of the coal-fired unit according to claim 1, characterized by comprising the following steps of:
s1, implementing a sampling process on the specific section of the flue of the coal-fired unit; firstly, a sampling device is connected, a silicone tube (7) for the outlet of a preposed three-way valve (12) is sequentially connected with two glass absorption bottles (10), a sampling pump front three-way valve (8) and a chemical titration sampling pump (9), and an electric heating tracing band is wound outside the silicone tube (7) for electrifying and heating; two glass absorption bottles (10) are placed in a trough of a refrigerator bath (11) and fixed;
s2, starting a chemical titration sampling pump (9) to check air tightness, determining the arrangement of sampling points according to sampling standards after no abnormity occurs, moving a depth positioning ring (4) to a specific position, fixing by using a locking valve (3), and then integrally inserting a sampling gun rod (2) into a sampling hole;
s3, connecting a temperature controller (13) to the sampling gun rod (2) and the heating box (5), and starting preheating after setting a heating target temperature; after preheating is finished, setting sampling flow and sampling duration, and starting a chemical titration sampling pump (9);
s4, in the sampling process, respectively adding deionized water and sodium hydroxide solution into a second group of glass absorption bottles (10), connecting the deionized water and the sodium hydroxide solution into the position of a silicone tube (7) between a front three-way valve (12) and a front three-way valve (8) of a sampling pump, switching a gas circuit through a switch valve after the previous group of samples are collected, and restarting a chemical titration sampling pump (9) to sample the next group of samples; and combining the absorption liquid in the glass absorption bottle (10) which is subjected to sampling, pouring the combined absorption liquid into the sampling bottle, cleaning the inner walls of the glass absorption bottle (10) and the silicone tube (7) by using deionized water, pouring the cleaning liquid into the sampling bottle, sealing and storing at low temperature, and detecting as soon as possible.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010771750.4A CN111751174A (en) | 2020-08-04 | 2020-08-04 | Device and method for sampling hydrogen chloride in flue gas of coal-fired unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010771750.4A CN111751174A (en) | 2020-08-04 | 2020-08-04 | Device and method for sampling hydrogen chloride in flue gas of coal-fired unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111751174A true CN111751174A (en) | 2020-10-09 |
Family
ID=72712987
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010771750.4A Pending CN111751174A (en) | 2020-08-04 | 2020-08-04 | Device and method for sampling hydrogen chloride in flue gas of coal-fired unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111751174A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113405865A (en) * | 2021-06-30 | 2021-09-17 | 上海电力大学 | Coal-fired flue gas arsenic sampling device |
-
2020
- 2020-08-04 CN CN202010771750.4A patent/CN111751174A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113405865A (en) * | 2021-06-30 | 2021-09-17 | 上海电力大学 | Coal-fired flue gas arsenic sampling device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105865853B (en) | Ship exhaust emission online analysis system and analysis method using same | |
| CN205642942U (en) | Boats and ships exhaust emission online analysis system | |
| CN109959538B (en) | Device and method for testing sulfur trioxide and condensable particles emitted by fixed pollution source | |
| CN103439152B (en) | The polymorphic sampling system of sulfuric anhydride and polymorphic method of testing in Concentration in Fixed Pollutants Source | |
| CN206235608U (en) | A kind of Flue Gas Pretreatment Device of flue gas automatic monitored control system | |
| CN106248442B (en) | SO in a kind of detection flue gas3Method | |
| CN201628641U (en) | Continuous automatic sampling device for monitoring water quality | |
| CN205562259U (en) | A flue gas preprocessor for fume emission continuous monitor system | |
| CN106706375B (en) | Drop sampling and measuring device and method in a kind of wet flue gas | |
| CN103293326A (en) | A mercury-containing fumes emission continuous monitoring system and a monitoring method thereof | |
| CN104458869A (en) | Online ammonia escape monitoring and analyzing method and online ammonia escape monitoring and analyzing instrument | |
| CN109342284A (en) | A kind of detection system and detection method for harmful substances from flue gases | |
| CN103645127A (en) | Back flushing type real-time online monitoring system for smoke pollutants | |
| CN204116274U (en) | The escaping of ammonia on-line monitoring analytical instrument | |
| CN111751174A (en) | Device and method for sampling hydrogen chloride in flue gas of coal-fired unit | |
| CN104849314A (en) | Dustproof system and method for detection probe of acid dew point instrument | |
| CN212340781U (en) | Device for sampling hydrogen chloride in flue gas of coal-fired unit | |
| CN210639118U (en) | Online continuous monitoring device for hydrogen chloride in flue gas | |
| CN105203471A (en) | Novel flue gas tester | |
| CN205404217U (en) | Sulfur dioxide flue gas sampling device | |
| CN204649662U (en) | A kind of acid dew point instrument detection probe dust prevention system | |
| CN211025478U (en) | In-situ flue gas pretreatment system | |
| CN203164193U (en) | Continuous monitoring system for emission of flue gas form mercury | |
| CN204255732U (en) | Portable non-condensing Flue Gas Pretreatment Device | |
| CN209894557U (en) | SO in coal-fired flue gas3Second-stage sampling system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |