CN213032195U - A processing apparatus for tail gas before chromatographic analysis sample - Google Patents
A processing apparatus for tail gas before chromatographic analysis sample Download PDFInfo
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- CN213032195U CN213032195U CN202021770646.5U CN202021770646U CN213032195U CN 213032195 U CN213032195 U CN 213032195U CN 202021770646 U CN202021770646 U CN 202021770646U CN 213032195 U CN213032195 U CN 213032195U
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Abstract
The utility model discloses a processing apparatus for tail gas before chromatographic analysis takes a sample, including one-level drying unit, second grade drying unit, dust filter unit and controller, the air inlet sealing connection of one-level drying unit has the intake pipe, and the gas outlet of one-level drying unit is connected with the air inlet of second grade drying unit through the gas transmission pipe, and the gas outlet of second grade drying unit is connected with the air inlet of dust filter unit through the gas transmission pipe, and the gas outlet sealing connection of dust filter unit has the outlet duct, and dust filter unit is connected with the controller; the first-stage drying unit and the second-stage drying unit are used for absorbing moisture in the tail gas, and a filter screen is arranged in the dust filtering unit and used for filtering particulate matters in the tail gas. Moisture and dust particle in the tail gas before the chromatographic analysis sample can be effectively got rid of, the accurate nature of chromatographic analysis result has been ensured, and moisture or dust particle in the tail gas reduce or eliminate simultaneously are to the influence of components and parts in the chromatograph, guarantee the life of chromatograph.
Description
Technical Field
The utility model relates to a tail gas treatment auxiliary assembly technical field, concretely relates to a processing apparatus for tail gas before chromatographic analysis samples.
Background
The gas chromatograph is a chromatographic analysis device using gas as a mobile phase. The principle is mainly to realize the separation of the mixture by utilizing the differences of the boiling point, the polarity and the adsorption property of the substances. After the sample to be analyzed is gasified in the sample inlet, the gasified sample is carried into the chromatographic column by the carrier gas, and the components are separated by the chromatographic column with different retention performances to the components in the mixture to be detected, and are sequentially led into the detector to obtain the detection signals of the components.
With the gradual maturity of chromatographic technology, large chemical enterprises at home and abroad use chromatographic analysis to replace the traditional chemical analysis method to analyze the content of various components in various gas-phase raw materials and products more and more, and the precision of the analysis result is greatly improved. However, since each element inside the chromatograph is easily damaged by the influence of the analysis sample, maintenance of the chromatograph is particularly important.
During the preparation of the catalyst, many exhaust gases are generated, and the composition and content of the exhaust gases are analyzed as a prerequisite for treating the exhaust gases. Adopt gas chromatograph to carry out the analysis to tail gas usually, however, can mix with moisture and tiny particulate matter among the tail gas, these moisture and tiny particulate matter not only can influence gas chromatograph's measurement accuracy, still can bring the negative effects of different degrees to the inside components and parts of gas chromatograph for gas chromatograph's life shortens greatly. Therefore, it is necessary to filter the moisture and fine particles in the exhaust gas before sampling for chromatographic analysis, so as to ensure the accuracy of the chromatographic analysis result, and reduce or eliminate the potential damage of the exhaust gas to the chromatograph.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming the defects in the prior art, providing a processing device for tail gas before chromatographic analysis sampling, effectively removing moisture and dust particles in the tail gas before chromatographic analysis sampling, making the tail gas entering a chromatograph more pure, ensuring the accuracy of chromatographic analysis results, reducing or eliminating the influence of moisture or dust particles in the tail gas on components in the chromatograph, and ensuring the service life of the chromatograph; this a processing apparatus for tail gas before chromatographic analysis sample structural design is simple reasonable, and economic practicality is strong. .
In order to achieve the purpose, the technical scheme of the utility model is to design a processing apparatus for tail gas before chromatographic analysis sampling, including primary drying unit, secondary drying unit, dust filter unit and controller, the air inlet sealing connection of primary drying unit have an intake pipe, the gas outlet of primary drying unit is connected with the air inlet of secondary drying unit through the gas transmission pipe, the gas outlet of secondary drying unit is connected with the air inlet of dust filter unit through the gas transmission pipe, the gas outlet sealing connection of dust filter unit has the outlet duct, dust filter unit be connected with the controller; the first-stage drying unit and the second-stage drying unit are used for absorbing moisture in tail gas, and a filter screen is arranged in the dust filtering unit and used for filtering particulate matters in the tail gas.
The utility model discloses a processing apparatus for tail gas before chromatographic analysis takes a sample can effectively get rid of moisture and dust granule in the tail gas before the chromatographic analysis takes a sample for the tail gas that gets into in the chromatograph is more pure, has ensured the accurate nature of chromatographic analysis result, has reduced or eliminated the influence of moisture or dust granule in the tail gas to components and parts in the chromatograph simultaneously, has guaranteed the life of chromatograph; this a processing apparatus for tail gas before chromatographic analysis sample structural design is simple reasonable, and economic practicality is strong.
The preferable technical scheme is that the primary drying unit and the secondary drying unit both comprise glass tubes, and sealing covers are detachably and hermetically mounted at two ends of each glass tube; the glass tube of the primary drying unit is filled with anhydrous magnesium sulfate and cotton positioned at two ends, one sealing cover is connected with the air inlet tube in a sealing and through way, and the other sealing cover is provided with an air outlet; the glass tube of the secondary drying unit is filled with color-changing silica gel and cotton positioned at two ends, one sealing cover is provided with an air inlet, and the other sealing cover is provided with an air outlet; the air outlet on the sealing cover of the primary drying unit is connected with the air inlet on the sealing cover of the secondary drying unit through the air transmission pipe. The primary drying unit and the secondary drying unit are simple and reasonable in structural design, wherein the primary drying unit plays a main drying role and absorbs most of moisture in tail gas, the secondary drying unit plays an auxiliary drying role and absorbs a small amount of moisture remained in the tail gas, after the color-changing silica gel in the secondary drying unit changes color, the anhydrous magnesium sulfate in the primary drying unit reaches the saturated water absorption amount, the anhydrous magnesium sulfate in the primary drying unit and the color-changing silica gel in the secondary drying unit need to be replaced, the drying agents in the primary drying unit and the secondary drying unit are convenient to monitor and replace in time, and the drying and purifying effects of the treatment device for tail gas before chromatographic analysis sampling on the tail gas are ensured.
In order to facilitate the replacement of the drying agent, the sealing cover is further preferably mounted at the end of the glass tube in a threaded manner.
In a further preferred technical scheme, the dust filtering unit comprises a box body, a gas inlet is formed in one side wall of the box body, a gas outlet is formed in the other side wall of the box body, and the gas outlet in the sealing cover of the secondary drying unit is connected with the gas inlet in the box body of the dust filtering unit through the gas transmission pipe; the one end that the box is close to the gas outlet be equipped with the filter screen, the sealed fixed mounting of periphery of filter screen on the inside wall of box, the bottom outside of box be equipped with the inside dust collector who link up of box, still include spiro union fixed mounting in the lid of dust collector bottom ash discharge opening. Dust filter unit structural design is simple reasonable, and the dust granule that the filter screen filtered the interception receives the action of gravity to fall into dust collector in, can regularly carry out the dust clearance to dust collector, has ensured this a processing apparatus for tail gas before the chromatographic analysis sample's convenience.
Further preferred technical scheme still, the inside action wheel that is equipped with of box, follow driving wheel and driving motor, box top fixed mounting has L type support, and the vertical orientation of the horizontal segment of L type support the filter screen, follow driving wheel rotate install in the tip of the horizontal segment of L type support, the shaft of action wheel with driving motor's output shaft transmission is connected, the action wheel with follow driving wheel meshing transmission, just follow driving wheel be equipped with the brush with the filter screen laminating on the side of filter screen, follow one side of driving wheel towards the air intake be equipped with airflow sensor, driving motor and airflow sensor all are connected with the controller, driving motor drives through the action wheel and is circular motion and cleans the filter screen from the brush on the driving wheel. The airflow sensor receives signals sent back to the controller in time when tail gas enters, the controller sends a starting command to the driving motor, the driving motor drives the brush on the driven wheel to do circular motion through the driving wheel and clean the filter screen, the filter screen is prevented from being blocked due to dust adhesion after being used for a long time, and cleanness and smoothness of the filter screen are guaranteed.
In order to ensure the filtering and intercepting effect of the filter screen on dust particles, the further preferable technical scheme is that the filter screen is a filter membrane with the pore size of micron order.
Further preferred technical scheme still, the bottom of box is established to hopper-shaped structure, and dust collector and the lowest end through connection of box bottom hopper-shaped structure. The dust cleaned by the brush from the filter screen can enter the dust collector in time, so that the dust is reduced from depositing at the bottom of the box body, the cleaning period of the dust filtering unit is prolonged, and the labor intensity of workers is reduced.
The utility model has the advantages and the beneficial effects that:
1. the utility model discloses a processing apparatus for tail gas before chromatographic analysis takes a sample can effectively get rid of moisture and dust granule in the tail gas before the chromatographic analysis takes a sample for the tail gas that gets into in the chromatograph is more pure, has ensured the accurate nature of chromatographic analysis result, has reduced or eliminated the influence of moisture or dust granule in the tail gas to components and parts in the chromatograph simultaneously, has guaranteed the life of chromatograph; this a processing apparatus for tail gas before chromatographic analysis sample structural design is simple reasonable, and economic practicality is strong.
2. The primary drying unit and the secondary drying unit are simple and reasonable in structural design, wherein the primary drying unit plays a main drying role and absorbs most of moisture in tail gas, the secondary drying unit plays an auxiliary drying role and absorbs a small amount of moisture remained in the tail gas, after the color-changing silica gel in the secondary drying unit changes color, the anhydrous magnesium sulfate in the primary drying unit reaches the saturated water absorption amount, the anhydrous magnesium sulfate in the primary drying unit and the color-changing silica gel in the secondary drying unit need to be replaced, the drying agents in the primary drying unit and the secondary drying unit are convenient to monitor and replace in time, and the drying and purifying effects of the processing device for tail gas before chromatographic analysis sampling on the tail gas are ensured.
3. The dust filtering unit comprises a box body, a gas inlet is formed in one side wall of the box body, a gas outlet is formed in the other side wall of the box body, and the gas outlet in the sealing cover of the secondary drying unit is connected with the gas inlet in the box body of the dust filtering unit through the gas transmission pipe; the one end that the box is close to the gas outlet be equipped with the filter screen, the sealed fixed mounting of periphery of filter screen on the inside wall of box, the bottom outside of box be equipped with the inside dust collector who link up of box, still include spiro union fixed mounting in the lid of dust collector bottom ash discharge opening. Dust filter unit structural design is simple reasonable, and the dust granule that the filter screen filtered the interception receives the action of gravity to fall into dust collector in, can regularly carry out the dust clearance to dust collector, has ensured this a processing apparatus for tail gas before the chromatographic analysis sample's convenience.
4. The inside action wheel that is equipped with of box, from driving wheel and driving motor, box top fixed mounting has L type support, and the horizontal segment of L type support is perpendicular to be oriented the filter screen, follow the driving wheel rotate install in the tip of the horizontal segment of L type support, the shaft of action wheel with driving motor's output shaft transmission is connected, the action wheel with from driving wheel meshing transmission, just follow the driving wheel be equipped with the brush with the filter screen laminating on the side of driving wheel orientation filter screen, one side of following driving wheel orientation air intake be equipped with airflow sensor, driving motor and airflow sensor all are connected with the controller, driving motor drives through the action wheel and is circular motion and cleans the filter screen from the brush on the driving wheel. The airflow sensor receives signals sent back to the controller in time when tail gas enters, the controller sends a starting command to the driving motor, the driving motor drives the brush on the driven wheel to do circular motion through the driving wheel and clean the filter screen, the filter screen is prevented from being blocked due to dust adhesion after being used for a long time, and cleanness and smoothness of the filter screen are guaranteed.
5. The bottom of box is established to hopper-shaped structure, and dust collector and the lowest end through connection of bottom of box portion hopper-shaped structure. The dust cleaned by the brush from the filter screen can enter the dust collector in time, so that the dust is reduced from depositing at the bottom of the box body, the cleaning period of the dust filtering unit is prolonged, and the labor intensity of workers is reduced.
Drawings
FIG. 1 is a schematic structural diagram of a device for treating tail gas before sampling for chromatographic analysis according to the present invention;
fig. 2 is a schematic view of the construction of the dust filter unit.
In the figure: 1. a primary drying unit; 2. a secondary drying unit; 3. a dust filtering unit; 4. a glass tube; 5. a sealing cover; 6. cotton; 7. anhydrous magnesium sulfate; 8. allochroic silica gel; 9. a box body; 10. a driving wheel; 11. a driven wheel; 12. filtering with a screen; 13. a dust collector; 14. an L-shaped bracket; 15. a drive motor; 16. an air inlet pipe; 17. a gas delivery pipe; 18. an air outlet pipe; 19. an airflow sensor; 20. a cover body; 21. and a brush.
Detailed Description
The following description will further describe embodiments of the present invention with reference to the accompanying drawings and examples. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
Examples
As shown in fig. 1-2, the utility model relates to a processing apparatus for tail gas before chromatographic analysis sampling, including primary drying unit 1, secondary drying unit 2, dust filter unit 3 and controller, the air inlet sealing connection of primary drying unit 1 have intake pipe 16, the gas outlet of primary drying unit 1 is connected with the air inlet of secondary drying unit 2 through gas transmission pipe 17, the gas outlet of secondary drying unit 2 is connected with the air inlet of dust filter unit 3 through gas transmission pipe 17, the gas outlet sealing connection of dust filter unit 3 has outlet duct 18, dust filter unit 3 be connected with the controller; first-level drying unit 1 and second grade drying unit 2 be arranged in absorbing the moisture in the tail gas, dust filter unit 3 in be equipped with filter screen 12 for particulate matter in the filtering tail gas.
Preferably, the primary drying unit 1 and the secondary drying unit 2 both comprise a glass tube 4, and two ends of the glass tube 4 are respectively provided with a sealing cover 5 in a detachable sealing manner; the glass tube 4 of the primary drying unit 1 is filled with anhydrous magnesium sulfate 7 and cotton 6 at two ends, one sealing cover 5 is connected with the air inlet pipe 16 in a sealing and penetrating manner, and the other sealing cover 5 is provided with an air outlet; the glass tube 4 of the secondary drying unit 2 is filled with allochroic silica gel 8 and cotton 6 positioned at two ends, one sealing cover 5 is provided with an air inlet, and the other sealing cover 5 is provided with an air outlet; the air outlet of the sealing cover 5 of the primary drying unit 1 is connected with the air inlet of the sealing cover 5 of the secondary drying unit 2 through the air transmission pipe 17.
Further preferably, the sealing cover 5 is screw-mounted on the end of the glass tube 4.
Further preferably, the dust filtering unit 3 comprises a box 9, a gas inlet is arranged on one side wall of the box 9, a gas outlet is arranged on the other side wall of the box 9, and the gas outlet on the sealing cover 5 of the secondary drying unit 2 is connected with the gas inlet on the box 9 of the dust filtering unit 3 through the gas transmission pipe 17; the one end that box 9 is close to the gas outlet be equipped with filter screen 12, the sealed fixed mounting in the inside wall of box 9 of periphery of filter screen 12, the bottom outside of box 9 be equipped with the inside dust collector 13 that link up of box 9, still include spiro union fixed mounting in the lid 20 of dust collector 13 bottom dust discharge opening.
Further preferably, a driving wheel 10, a driven wheel 11 and a driving motor 15 are arranged inside the box body 9, an L-shaped bracket 14 is fixedly arranged at the top of the box body 9, and the horizontal section of the L-shaped bracket 14 is vertically faced to the filter screen 12, the driven wheel 11 is rotatably mounted at the end of the horizontal section of the L-shaped bracket 14, the wheel shaft of the driving wheel 10 is in transmission connection with the output shaft of the driving motor 15, the driving wheel 10 is in meshing transmission with the driven wheel 11, and a brush 21 attached to the filter screen 12 is arranged on one side surface of the driven wheel 11 facing the filter screen 12, an airflow sensor 19 is arranged on one side of the driven wheel 11 facing the air inlet, the driving motor 15 and the airflow sensor 19 are both connected with the controller, and the driving motor 15 drives the brush 21 on the driven wheel 11 to do circular motion through the driving wheel 10 and clean the filter screen 12.
Further preferably, the filter screen 12 is a filter membrane with a pore size of micron order.
Further preferably, the bottom of the box 9 is a funnel-shaped structure, and the dust collector 13 is connected to the lowest end of the funnel-shaped structure at the bottom of the box 9.
The utility model is used for tail gas's processing apparatus's prior to chromatographic analysis sample theory of use:
the tail gas to be treated enters the primary drying unit 1 from the gas inlet pipe 16 for primary drying, the tail gas after primary drying enters the secondary drying unit 2 through the gas transmission pipe 17 for secondary drying, the tail gas after secondary drying enters the dust filtering unit 3 through the gas transmission pipe 17 for dust removal, and the tail gas after dust particles are removed enters a chromatograph through the gas outlet pipe 18 for subsequent analysis.
The primary drying unit 1 has a main drying function of absorbing most of moisture in the tail gas, the secondary drying unit 2 has an auxiliary drying function of absorbing a small amount of moisture remaining in the tail gas, and when the allochroic silica gel 8 in the secondary drying unit 2 changes color, the anhydrous magnesium sulfate 7 in the primary drying unit 1 reaches a saturated water absorption amount, and the anhydrous magnesium sulfate 7 in the primary drying unit 1 and the allochroic silica gel 8 in the secondary drying unit 2 need to be replaced.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the technical principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.
Claims (7)
1. The device for processing tail gas before chromatographic analysis sampling is characterized by comprising a primary drying unit (1), a secondary drying unit (2), a dust filtering unit (3) and a controller, wherein a gas inlet pipe (16) is hermetically connected to a gas inlet of the primary drying unit (1), a gas outlet of the primary drying unit (1) is connected with a gas inlet of the secondary drying unit (2) through a gas transmission pipe (17), a gas outlet of the secondary drying unit (2) is connected with a gas inlet of the dust filtering unit (3) through the gas transmission pipe (17), a gas outlet pipe (18) is hermetically connected to a gas outlet of the dust filtering unit (3), and the dust filtering unit (3) is connected with the controller; one-level drying unit (1) and second grade drying unit (2) be arranged in absorbing the moisture in the tail gas, dust filter unit (3) in be equipped with filter screen (12) for particulate matter in the filtration tail gas.
2. The device for processing tail gas before chromatographic analysis sampling according to claim 1, wherein the primary drying unit (1) and the secondary drying unit (2) both comprise a glass tube (4), and two ends of the glass tube (4) are respectively provided with a sealing cover (5) in a detachable and sealing way;
the glass tube (4) of the primary drying unit (1) is filled with anhydrous magnesium sulfate (7) and cotton (6) positioned at two ends, one sealing cover (5) is connected with the air inlet tube (16) in a sealing and through mode, and the other sealing cover (5) is provided with an air outlet;
the glass tube (4) of the secondary drying unit (2) is filled with allochroic silica gel (8) and cotton (6) positioned at two ends, one sealing cover (5) is provided with an air inlet, and the other sealing cover (5) is provided with an air outlet;
the air outlet of the sealing cover (5) of the primary drying unit (1) is connected with the air inlet of the sealing cover (5) of the secondary drying unit (2) through the air transmission pipe (17).
3. The device for the treatment of off-gas before the chromatographic analysis sampling according to claim 2, characterized in that the sealing cap (5) is screwed to the end of the glass tube (4).
4. The apparatus for processing tail gas before chromatographic analysis sampling according to claim 3, wherein the dust filtering unit (3) comprises a box body (9), one side wall of the box body (9) is provided with a gas inlet, the other side wall of the box body (9) is provided with a gas outlet, and the gas outlet on the sealing cover (5) of the secondary drying unit (2) is connected with the gas inlet on the box body (9) of the dust filtering unit (3) through the gas transmission pipe (17);
the one end that box (9) are close to the gas outlet be equipped with filter screen (12), the sealed fixed mounting in the inside wall of box (9) of periphery of filter screen (12), the bottom outside of box (9) be equipped with the inside dust collector (13) that link up of box (9), still including spiro union fixed mounting in dust collector (13) bottom cover (20) of unloading the ash mouth.
5. The device for processing the tail gas before chromatographic analysis sampling according to claim 4, wherein a driving wheel (10), a driven wheel (11) and a driving motor (15) are arranged inside the box body (9), an L-shaped bracket (14) is fixedly installed at the top of the box body (9), the horizontal section of the L-shaped bracket (14) vertically faces to the filter screen (12), the driven wheel (11) is rotatably installed at the end part of the horizontal section of the L-shaped bracket (14), the wheel shaft of the driving wheel (10) is in transmission connection with the output shaft of the driving motor (15), the driving wheel (10) is in meshing transmission with the driven wheel (11), a brush (21) attached to the filter screen (12) is arranged on one side face of the driven wheel (11) facing to the filter screen (12), and an airflow sensor (19) is arranged on one side of the driven wheel (11) facing to the air inlet, the driving motor (15) and the airflow sensor (19) are connected with the controller, and the driving motor (15) drives the brush (21) on the driven wheel (11) to do circular motion through the driving wheel (10) and clean the filter screen (12).
6. The device for the treatment of the off-gas before the chromatographic analysis sampling according to claim 5, characterized in that the filter screen (12) is a filter membrane with a pore size in the micron order.
7. The device for processing tail gas before chromatographic analysis sampling according to claim 6, characterized in that the bottom of the box body (9) is provided with a funnel-shaped structure, and the dust collector (13) is communicated with the lowest end of the funnel-shaped structure at the bottom of the box body (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021770646.5U CN213032195U (en) | 2020-08-24 | 2020-08-24 | A processing apparatus for tail gas before chromatographic analysis sample |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021770646.5U CN213032195U (en) | 2020-08-24 | 2020-08-24 | A processing apparatus for tail gas before chromatographic analysis sample |
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| Publication Number | Publication Date |
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| CN213032195U true CN213032195U (en) | 2021-04-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202021770646.5U Active CN213032195U (en) | 2020-08-24 | 2020-08-24 | A processing apparatus for tail gas before chromatographic analysis sample |
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- 2020-08-24 CN CN202021770646.5U patent/CN213032195U/en active Active
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