CN215953122U - Multipurpose flue gas sampling system - Google Patents
Multipurpose flue gas sampling system Download PDFInfo
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- CN215953122U CN215953122U CN202122074570.3U CN202122074570U CN215953122U CN 215953122 U CN215953122 U CN 215953122U CN 202122074570 U CN202122074570 U CN 202122074570U CN 215953122 U CN215953122 U CN 215953122U
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Abstract
The utility model provides a multipurpose flue gas sampling system, which is convenient to operate, can realize the sampling and trapping work of various flue gas pollutants in different temperature environments, and has good adaptability; it includes: the temperature control device is connected with the sampling device and is used for controlling the temperature of the sampling device; the sampling device is used for sampling flue gas and detecting temperature, and feeds a temperature signal obtained by detection back to the temperature control device in real time; and the sampling device is connected with the sampling device and used for receiving the flue gas output by the sampling device and respectively carrying out trapping test on pollutants in the flue gas.
Description
Technical Field
The utility model relates to the technical field of atmospheric pollutant treatment, in particular to a multipurpose flue gas sampling system.
Background
With the current increasingly serious environmental protection problem, the national emission requirement on the smoke pollutants of coal-fired power plants is more and more strict, and then the pollutants need to be tested according to the current emission requirement, but the existing smoke sampling system has single function and can only sample and collect the single pollutants; meanwhile, the integration level is low, the operation is inconvenient, and the error is large; in addition, the problems of poor adaptability to severe working conditions, inconvenient field maintenance, large workload and the like exist.
Disclosure of Invention
Aiming at the problems, the utility model provides a multipurpose flue gas sampling system which is convenient to operate, can realize the sampling and trapping work of various flue gas pollutants in different temperature environments and has good adaptability.
The technical scheme is as follows: a multipurpose flue gas sampling system which characterized in that: it includes:
the temperature control device is connected with the sampling device and is used for controlling the temperature of the sampling device;
the sampling device is used for sampling flue gas and detecting temperature, and feeds a temperature signal obtained by detection back to the temperature control device in real time;
and the sampling device is connected with the sampling device and used for receiving the flue gas output by the sampling device and respectively carrying out trapping test on pollutants in the flue gas.
Furthermore, the temperature control device comprises a temperature control box, a temperature controller arranged in the temperature control box and a relay connected with the temperature controller, wherein a power interface, a fuse and a quick interface are arranged on the temperature control box, the power interface is connected with the temperature controller after passing through the fuse, and the quick interface is connected with the temperature controller;
furthermore, the sampling device comprises a sampling pipe, an inner pipe and a housing which are sequentially sleeved from inside to outside, wherein a heating wire is wound on the outer wall of the inner pipe, a thermocouple connected with the temperature controller is arranged on the heating wire, one end of the housing is connected with a sampling nozzle used for sampling smoke, the other end of the housing is connected with an air storage cylinder, one end of the sampling pipe is communicated with the sampling nozzle, the other end of the sampling pipe penetrates through the housing and then extends into the air storage cylinder, a quick connector connected with the heating wire is arranged on the air storage cylinder, and the quick connector is connected with the quick connector through a cable;
furthermore, the temperature control box is made of any one of plastic, iron, stainless steel and aluminum alloy; the cable is a high-temperature-resistant multi-core cable; the heating wire is any one of a metal heating wire, a ceramic heating wire and a heating belt; the thermocouple is any one of a K-type thermocouple, a J-type thermocouple and an N-type thermocouple; the sampling tube adopts any one of a quartz tube, a glass tube, a stainless steel pipeline, a copper tube and a polytetrafluoroethylene tube; the inner pipe and the housing are made of metal materials;
furthermore, a filtering device is connected between one end of the sampling pipe and the sampling nozzle, the filtering device comprises a filtering barrel and a filter arranged in the filtering barrel, the sampling nozzle is communicated with an inlet of the filter, and an outlet of the filter is communicated with one end of the sampling pipe;
furthermore, the sampling device comprises a heat preservation box and a plurality of sampling bottles arranged in the heat preservation box, the sampling bottles are connected in sequence, the first sampling bottle is connected with the gas storage cylinder through a rubber pipe, and the last sampling bottle is connected with a suction pump;
furthermore, the sampling device also comprises a bracket, a plurality of sampling bottles are assembled on the bracket in sequence, the bracket is made of metal materials, and a cooling medium or a heating medium is placed in the heat preservation box;
furthermore, the heat insulation box is made of metal or plastic, and the inner wall of the heat insulation box is lined with a heat insulation lining;
furthermore, mounting holes with the same number as the sampling bottles are formed in the bracket, and the sampling bottles are placed in the mounting holes;
further, the number of sampling bottle is 8, place any one in dry silica gel, filter pulp, the absorption liquid in the sampling bottle.
The utility model has the advantages of reasonable structure, simple operation and convenient carrying, can be applied to different temperature environments by the temperature control device, the sampling device and the sampling device which are sequentially connected, can finish the sampling and trapping work of various smoke pollutants, has good adaptability, convenient maintenance and small workload, and has better economic use value.
Drawings
FIG. 1 is a schematic view of a temperature control device according to the present invention;
FIG. 2 is a schematic view of a partial structure of the temperature control device according to the present invention (the state after the upper cover plate is hidden);
FIG. 3 is a schematic view of the structure of the sampling device of the present invention;
FIG. 4 is a schematic diagram of a right side view of the sampling device of the present invention;
FIG. 5 is a schematic view of the structure of FIG. 4 taken along line A-A;
FIG. 6 is a left side view of the sampling device of the present invention;
FIG. 7 is a schematic view showing a connection structure of the filter device according to the present invention;
FIG. 8 is a schematic view of the structure of the sampling device of the present invention;
fig. 9 is a schematic view of the structure of the sampling apparatus according to the present invention (the state after the incubator is hidden).
Detailed Description
As shown in fig. 1 to 9, a multipurpose flue gas sampling system includes:
the temperature control device is connected with the sampling device and is used for controlling the temperature of the sampling device;
the sampling device is used for sampling flue gas and detecting temperature, and feeds a temperature signal obtained by detection back to the temperature control device in real time;
and the sampling device is connected with the sampling device and used for receiving the flue gas output by the sampling device and respectively carrying out trapping test on pollutants in the flue gas.
The temperature control device comprises a temperature control box 1, a temperature controller 2 arranged in the temperature control box 1 and a relay 3 connected with the temperature controller 2, wherein a power interface 4, a fuse 5 and a quick interface 6 are arranged on the temperature control box 1, the power interface 4 is connected with the temperature controller 2 through the fuse 5, and the quick interface 6 is connected with the temperature controller 2; the sampling device comprises a sampling pipe 7, an inner pipe 8 and a housing 9 which are sequentially sleeved from inside to outside, wherein a heating wire 10 is wound on the outer wall of the inner pipe 8, a thermocouple 11 connected with the temperature controller 2 is arranged on the heating wire 10, one end of the housing 9 is connected with a sampling nozzle 12 used for sampling smoke, the other end of the housing 9 is connected with an air storage cylinder 13, one end of the sampling pipe 7 is communicated with the sampling nozzle 12, the other end of the sampling pipe 7 penetrates through the housing 9 and then extends into the air storage cylinder 13, a quick connector 14 connected with the heating wire 10 is arranged on the air storage cylinder 13, and the quick connector 14 is connected with the quick connector 6 through a cable; the power supply is accessed through a power interface 4, and is divided into two paths after passing through a fuse 5, one path is connected to a temperature controller 2, the other path is connected to a heating wire 10 after passing through a relay 3, when the power supply is used, the temperature of the temperature controller 2 is firstly set, the temperature controller 2 compares the set temperature with the measured temperature of a thermocouple 11, a signal is sent out to control the on-off and duty ratio of the relay 3, and the relay 3 further controls the power of the heating wire 10, namely when the temperature of the thermocouple 11 rises and exceeds the set temperature, the temperature controller 2 controls the relay 3 to be switched off; and the adopted temperature controller 2 has the functions of temperature measurement display, temperature setting, logic operation, alarm prompt and feedback regulation.
The upper cover plate of the temperature control box 1 is made of aluminum alloy; the cable adopts a high-temperature resistant multi-core cable; the heating wire 10 is a ceramic heating wire 10; the thermocouple 11 adopts any one of a K-type thermocouple, a J-type thermocouple and an N-type thermocouple; the sampling tube 7 adopts a quartz glass tube; the inner tube 8 and the housing 9 are made of stainless steel, and the inner tube 8 can be quickly replaced according to sampling requirements; the relay 3 is a solid-state relay; the quick connector 14 and the quick connector 6 adopt five-core high-temperature resistant quick connectors.
A filtering device is connected between one end of the sampling pipe 7 and the sampling nozzle 12, the filtering device comprises a filtering barrel 15 and a filter 16 arranged in the filtering barrel 15, the sampling nozzle 12 is communicated with an inlet of the filter 16, and an outlet of the filter 16 is communicated with one end of the sampling pipe 7; the filter 16 is a ceramic filter.
The sampling device comprises a heat preservation box 17 and a plurality of sampling bottles 18 arranged in the heat preservation box 17, wherein the sampling bottles 18 are connected in sequence, the first sampling bottle 18 is connected with the gas storage cylinder 13 through a rubber pipe (not shown in the figure), and the last sampling bottle 18 is connected with a suction pump (not shown in the figure) so as to provide power for smoke; the sampling device further comprises a support 19, 8 sampling bottles 18 are sequentially assembled on the support 19, any one of dry silica gel, filter cotton and absorption liquid is placed in each sampling bottle 18, the support 19 is made of stainless steel, a cooling medium or a heating medium is placed in the heat preservation box 17, and the temperature in the heat preservation box 17 can be adjusted by adding ice blocks or hot water.
The heat preservation box 17 is made of plastic materials, and the inner wall of the heat preservation box 17 is lined with pearl wool heat preservation materials and used for keeping the temperature of the heat preservation box 17; the bracket 19 is provided with mounting holes 20 with the same number as the sampling bottles 18, and the sampling bottles 18 are placed in the mounting holes 20 to prevent the sampling bottles 18 from toppling over.
In the figure, 21 is an upper cover plate of the temperature control box.
The utility model can complete the sampling and trapping work of various smoke pollutants on site through different parameter settings and accessory combinations. Specifically, the method is used for testing the particle Hg in the inlet and outlet flue gas of the SCR denitration reactor of a certain 600MW coal-fired unitpZero valent Hg0And bivalent mercury Hg2+For concentration example, the sampling analysis was performed by the American EPA recommended OHM method. Before sampling, the temperature of the temperature controller 2 is set to be 120 ℃, when in work, the smoke sequentially passes through a sampling nozzle 12, a filter 16, a sampling pipe 7, an air storage cylinder 13 and a rubber pipe and then enters 8 sampling bottles 18 which are connected in sequence under the action of negative pressure, the smoke is sucked through the sampling nozzle 12 and then is filtered through the filter 16 in advance, the fly ash with larger particles is left in the filter 16, and the mercury Hg in the fly ash of the filter 16 is measuredpThe content can obtain the content of the granular mercury in the flue gas; putting an ice-water mixture into the heat preservation box 17, keeping the sampling temperature at 0 ℃, respectively absorbing the components to be sampled in the smoke by the medicament in the sampling bottles 18, and keeping the components in the smoke in the corresponding sampling bottles 18, wherein 50mL of KCl solution with the molar concentration of 1mol/L is added into the first three sampling bottles 18, and HNO with the mass fraction of 5 percent is added into the fourth sampling bottle 183-10％H2O2The fifth, sixth and seventh sampling bottles 18 are added with H with the mass fraction of 10%2SO4-4％KmnO4The eighth sampling bottle 18 is filled with silica gel particlesThe eighth sampling bottle 18 is still connected with the air suction pump through the rubber tube, and the negative pressure in the sampling bottle 18 is adjusted by controlling the rotating speed of the air suction pump; hg in the flue gas can be absorbed by the KCl solution2+Through H2O2And K2MnO4Solution can oxidize and absorb elemental mercury Hg in flue gas0And finally, the mercury absorption liquid sample collected by the isokinetic sampling method is digested and then is tested for mercury concentration by the atomic fluorescence spectrometer, so that the method is high in testing accuracy and small in error, can be applied to different temperature environments, completes the sampling, trapping and testing work of various smoke pollutants, is good in adaptability, convenient to maintain, small in workload and good in economic use value.
It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (10)
1. A multipurpose flue gas sampling system which characterized in that: it includes:
the temperature control device is connected with the sampling device and is used for controlling the temperature of the sampling device;
the sampling device is used for sampling flue gas and detecting temperature, and feeds a temperature signal obtained by detection back to the temperature control device in real time;
and the sampling device is connected with the sampling device and used for receiving the flue gas output by the sampling device and respectively carrying out trapping test on pollutants in the flue gas.
2. The multipurpose flue gas sampling system of claim 1, wherein: the temperature control device comprises a temperature control box, a temperature controller arranged in the temperature control box and a relay connected with the temperature controller, wherein a power supply interface, a fuse and a quick interface are arranged on the temperature control box, the power supply interface is connected with the temperature controller after passing through the fuse, and the quick interface is connected with the temperature controller.
3. A multi-purpose flue gas sampling system according to claim 2, wherein: sampling device includes sampling pipe, inner tube, the housing of suit in proper order from inside to outside, the winding of inner tube outer wall has the heater strip be equipped with on the heater strip with the thermocouple that the temperature controller is connected, the one end of housing is connected with the sampling mouth that is used for the flue gas sampling, the other end of housing is connected with the gas receiver, the one end of sampling pipe with the sampling mouth is linked together, the other end of sampling pipe passes stretch into behind the housing in the gas receiver, be equipped with on the gas receiver with the quick-operation joint that the heater strip is connected, quick-operation joint with through cable connection between the quick-operation joint.
4. A multi-purpose flue gas sampling system according to claim 3, wherein: the temperature control box is made of any one of plastic, iron, stainless steel and aluminum alloy; the cable is a high-temperature-resistant multi-core cable; the heating wire is any one of a metal heating wire, a ceramic heating wire and a heating belt; the thermocouple is any one of a K-type thermocouple, a J-type thermocouple and an N-type thermocouple; the sampling tube adopts any one of a quartz tube, a glass tube, a stainless steel pipeline, a copper tube and a polytetrafluoroethylene tube; the inner tube and the housing are made of metal materials.
5. A multi-purpose flue gas sampling system according to claim 3, wherein: the sampling device comprises a sampling pipe, a sampling nozzle and a filtering device, wherein the sampling nozzle is arranged in the sampling pipe, the sampling nozzle is communicated with the sampling pipe, the filtering device is connected between one end of the sampling pipe and the sampling nozzle, the filtering device comprises a filtering barrel and a filter arranged in the filtering barrel, the sampling nozzle is communicated with an inlet of the filter, and an outlet of the filter is communicated with one end of the sampling pipe.
6. A multi-purpose flue gas sampling system according to claim 3, wherein: the sampling device comprises an insulation can and a plurality of sampling bottles arranged in the insulation can, the sampling bottles are connected in sequence, the first sampling bottle is connected with the gas storage cylinder through a rubber pipe, and the last sampling bottle is connected with a suction pump.
7. The multipurpose flue gas sampling system of claim 6, wherein: the sampling device further comprises a support, a plurality of sampling bottles are assembled on the support in sequence, the support is made of metal materials, and a cooling medium or a heating medium is placed in the heat preservation box.
8. The multipurpose flue gas sampling system of claim 6, wherein: the heat preservation box is made of metal or plastic, and a heat insulation lining is lined on the inner wall of the heat preservation box.
9. The multipurpose flue gas sampling system of claim 7, wherein: the bracket is provided with mounting holes with the same number as the sampling bottles, and the sampling bottles are arranged in the mounting holes.
10. The multipurpose flue gas sampling system of claim 6, wherein: the quantity of sampling bottle is 8, place any kind in dry silica gel, the filter pulp, the absorption liquid in the sampling bottle.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202122074570.3U CN215953122U (en) | 2021-08-31 | 2021-08-31 | Multipurpose flue gas sampling system |
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| CN202122074570.3U CN215953122U (en) | 2021-08-31 | 2021-08-31 | Multipurpose flue gas sampling system |
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| CN215953122U true CN215953122U (en) | 2022-03-04 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113640068A (en) * | 2021-08-31 | 2021-11-12 | 苏州西热节能环保技术有限公司 | Multipurpose flue gas sampling system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113640068A (en) * | 2021-08-31 | 2021-11-12 | 苏州西热节能环保技术有限公司 | Multipurpose flue gas sampling system |
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