Flue gas capturing device and flue gas capturing method

Abstract

The present application relates to a flue gas trapping device and a flue gas trapping method. The flue gas trapping device comprises a trap, a liquid reservoir, a suction device and a driver. The flue gas trapping method comprises: adding a preset amount of absorption liquid into the liquid reservoir through a liquid injection opening of the liquid reservoir, and then closing the liquid injection opening; moving a piston in the trap from a first position to a second position, so that flue gas enters a trapping cavity of the trap from a flue gas inlet of the trap; closing the flue gas inlet of the trap, keeping the piston at the second position, and making the absorption liquid enter the trapping cavity from the liquid reservoir through an absorption liquid inlet of the trap; closing the flue gas inlet of the trap, opening the liquid injection opening of the liquid reservoir, and restoring the piston from the second position to the first position. The present application simplifies the trapping of flue gas.

Description

TECHNICAL FIELD

[0001] The present application relates to flue gas capture, and more particularly, to a cigarette flue gas capture device and a flue gas capture method. BACKGROUND

[0002] The flue gas generated by the burning of cigarettes can affect human health. Research and detection analysis of the composition of the flue gas generated by cigarettes can help to ensure the safety of cigarette products and improve human health. Research and detection analysis of the flue gas generated by cigarettes requires capturing the flue gas. Existing flue gas capture devices are relatively complex. Therefore, an improved solution is urgently needed. SUMMARY

[0003] The purpose of the present application is to provide a simple solution for capturing flue gas.

[0004] To this end, the present application provides, in a first aspect, a flue gas capture device, comprising: a collector having a collection cavity, a flue gas inlet and an absorption liquid inlet, the opening and closing of the flue gas inlet being controlled by a first valve, the opening and closing of the absorption liquid inlet being controlled by a second valve; a liquid reservoir having a liquid inlet and a liquid outlet, the liquid inlet being used to add absorption liquid to the liquid reservoir, the opening and closing of the liquid inlet being controlled by a third valve, the liquid outlet being communicated with the absorption liquid inlet through the second valve; a suction device comprising a piston, the piston being installed in the collector and being reciprocable between a first position and a second position in the collector to change the volume of the collection cavity; a driver driving the piston to perform a suction stroke, a collection stroke and a return stroke; in the suction stroke, the first valve is opened and the second valve is closed, the piston moves from the first position to the second position to expand the volume of the collection cavity, so that flue gas enters the collection cavity from the flue gas inlet; in the collection stroke, the first valve is closed, the second valve is opened and the third valve is closed, the piston remains in the second position, so that absorption liquid enters the collection cavity from the liquid reservoir; in the return stroke, the first valve is closed, the second valve is opened and the third valve is opened, the piston returns from the second position to the first position.

[0005] In an embodiment of the present application, a flue gas input device is further included, the output port of the flue gas input device being communicated to the flue gas inlet of the collector through the first valve, for heating or burning the cigarette to input flue gas into the collector in the suction stroke.

[0006] In one embodiment of the present application, the reservoir is located above the collector or the position of the reservoir relative to the collector is changeable so that the absorbent liquid in the reservoir flows into the collector during the trapping stroke.

[0007] In one embodiment of the present application, a first limiting part is arranged in the collector for limiting the maximum stroke of the piston away from the second position to the first position.

[0008] In one embodiment of the present application, the collector further has an absorbent liquid discharge port communicating with the trapping cavity, which is used for discharging the absorbent liquid in the trapping cavity.

[0009] In one embodiment of the present application, a stirrer is further installed in the collector, which is used for stirring the absorbent liquid in the trapping cavity.

[0010] In one embodiment of the present application, a controller is further included, which is used for controlling the suction stroke, trapping stroke and backflow stroke of the piston, and automatically controlling the opening and closing of the first valve, second valve and third valve.

[0011] The second aspect of the present application provides a flue gas trapping method, which comprises: a liquid injection step of adding a preset amount of absorbent liquid into a reservoir through a liquid injection port of the reservoir, and then closing the liquid injection port; a suction step of expanding the volume of a trapping cavity of a collector so that flue gas enters the trapping cavity from a flue gas inlet of the collector; a trapping step of closing the flue gas inlet of the collector, keeping the volume of the trapping cavity, and making the absorbent liquid enter the trapping cavity from an absorbent liquid inlet of the collector; and a backflow step of closing the flue gas inlet of the collector, opening the liquid injection port of the reservoir, restoring the volume of the trapping cavity to the original state, and making at least part of the gas in the trapping cavity enter the reservoir.

[0012] In one embodiment of the present application, the trapping step further comprises stirring the absorbent liquid in the trapping cavity.

[0013] In one embodiment of the present application, the backflow step further comprises closing the liquid injection port of the reservoir after the volume of the trapping cavity is restored to the original state; and the suction step, trapping step and backflow step are sequentially executed at least twice.

[0014] The present application simplifies the trapping of flue gas by the cooperation of the collector, reservoir, suction device and driver. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is a schematic view of a flue gas trapping device provided by one embodiment of the present application;

[0016] Figure 2 This is a flowchart of a flue gas capture method provided in one embodiment of the present invention;

[0017] Figure 3 This is a schematic diagram of a flue gas capture device provided in another embodiment of the present invention. Detailed Implementation

[0018] The embodiments of the present invention will be further described below with reference to the accompanying drawings.

[0019] Example 1

[0020] like Figure 1 As shown, a flue gas collection device 100 provided in one embodiment of the present invention includes a collector 10, a liquid reservoir 30, a suction device 40, and a driver 50.

[0021] The collector 10 has a collection chamber 17, a flue gas inlet 12 communicating with the collection chamber 17, and an absorbent liquid inlet 14. The opening and closing of the flue gas inlet 12 is controlled by a first valve 13, and the opening and closing of the absorbent liquid inlet 14 is controlled by a second valve 15. That is, when the first valve 13 is open, the flue gas inlet 12 is open, allowing flue gas to enter the collection chamber 17; when the first valve 13 is closed, the flue gas inlet 12 is closed. When the second valve 15 is open, the absorbent liquid inlet 14 is open, allowing absorbent liquid to enter the collection chamber 17; when the second valve 15 is closed, the absorbent liquid inlet 14 is closed.

[0022] The reservoir 30 has an inlet 32 ​​and an outlet 34. The inlet 32 ​​is used to add absorbent to the reservoir 30, and the outlet 34 is connected to the absorbent inlet 14 via a second valve 15. The opening and closing of the inlet 32 ​​is controlled by a third valve (…). Figure 1 (Not shown) Control, that is, when the third valve is opened, the inlet 32 ​​is opened to allow the absorbent liquid to enter the collection chamber 17 from the reservoir 30, and when the third valve is closed, the inlet 32 ​​is closed.

[0023] The suction device 40 includes a piston 42 and a lead screw 43. The piston 42 is installed inside the trap 10 and can reciprocate between a first position A1 and a second position A2 within the trap 10 to change the volume of the trapping chamber 17. The lead screw 43 is connected to the piston 42 to drive the piston 42. In this embodiment, when the piston moves from the first position A1 to the second position A2, the volume of the trapping chamber 17 increases; when the piston returns to its original position from the second position A2 to the first position A1, the volume of the trapping chamber 17 returns to its original state. Figure 1In the embodiment shown, in order to conveniently show the position and space of the trapping cavity 17, the first position A1 (also called initial position) of the piston is a preset distance from the flue gas inlet 12 end of the trap 10, that is, when the piston is in the first position A1, the trapping cavity 17 has an initial volume. It can be understood that, according to requirements, the first position A1 of the piston can be closer to the flue gas inlet 12 end of the trap 10, thereby reducing the initial volume of the trapping cavity 17; or even, the first position A1 of the piston can be abutted to the flue gas inlet 12 end of the trap 10, so that the initial volume of the trapping cavity 17 is as small as possible or 0.

[0024] The driver 50 drives the piston 42 to perform the suction stroke, the trapping stroke and the backflow stroke through the lead screw 43.

[0025] In the suction stroke, the first valve 13 is opened and the second valve 15 is closed, the piston 42 is moved from the first position A1 to the second position A2 as shown, so that the volume of the trapping cavity 17 is increased and the internal pressure is reduced, and the flue gas enters the trapping cavity 17 of the trap 10 from the flue gas inlet 12. At this time, the trapping cavity 17 is mixed with flue gas and air, or is completely filled with the absorption liquid. Figure 1

[0026] In the trapping stroke, the piston 42 is kept in the second position A2 so that the volume of the trapping cavity 17 is kept unchanged, the first valve 12 is closed, the second valve 15 is opened and the third valve is closed, so that the absorption liquid enters the trapping cavity 17 from the liquid reservoir 30. It can be understood that, because the first valve 12 and the third valve are closed, the trap 10 and the liquid reservoir 30 together form a closed space. In the process of the absorption liquid entering the trapping cavity 17 from the liquid reservoir 30, part of the gas in the trapping cavity 17 enters the liquid reservoir 30, and the absorption liquid in the process is in sufficient contact with the absorption liquid so that the flue gas is captured and absorbed by the absorption liquid, and the gas entering the liquid reservoir 30 is mainly air or gas that cannot be absorbed by the absorption liquid. Preferably, the liquid reservoir 30 is located above the trap 10 or the position of the liquid reservoir 30 relative to the trap 10 can be changed, so that the absorption liquid in the liquid reservoir 30 can flow into the trap 10 under the action of gravity in the trapping stroke; the absorption liquid in the liquid reservoir 30 is preferably all entered into the trapping cavity 17, and the trapping cavity 17 is in a gas-liquid coexistence state or is completely filled with the absorption liquid. It can be understood that, the gas in the gas-liquid coexistence state is mainly air or gas that cannot be absorbed by the absorption liquid.

[0027] ​In the backflow stroke, the first valve 13 remains closed, the second valve remains open, and the third valve is open to connect the reservoir 30 to the outside, and the piston 42 is restored from the second position A2 to the first position A1, and the volume of the trapping cavity 17 is reduced to the original state during the process. Understandably, if the trapping cavity 17 is filled with the absorbent liquid when the trapping stroke is completed, the absorbent liquid in the trapping cavity 17 is backflowed to the reservoir 30 in the backflow stroke; if the trapping cavity 17 is in a gas-liquid coexistence state when the trapping stroke is completed, the gas in the trapping cavity 17 enters the reservoir 30 first, and then the absorbent liquid in the trapping cavity 17 is backflowed to the reservoir 30 in the backflow stroke. In this way, the entire process of air extraction, trapping, and resetting is completed.

[0028] Preferably, the bottom of the trap 10 further has an absorbent liquid discharge port 18 connected to the trapping cavity 17, and the absorbent liquid discharge port 18 is used to discharge the absorbent liquid in the trapping cavity 17. In an alternative, if the initial volume of the trapping cavity 17 is 0, most of the absorbent liquid (or the gas and the absorbent liquid) in the trapping cavity 17 is backflowed to the reservoir 30 in the backflow stroke, and at this time, the absorbent liquid discharge port 18 can not be provided.

[0029] In this embodiment, the smoke trapping device 100 further comprises a smoke inputter 60, and the output port of the smoke inputter 60 is connected to the smoke inlet 12 of the trap 10 through the first valve 13, and is used to heat or burn the cigarette 61 to input smoke into the trap 10 in the air extraction stroke.

[0030] In order to improve the accuracy of trapping, the trap 10 is provided with a first limiting part (not shown) for limiting the maximum stroke of the piston 42 away from the second position A2 to the first position A1. In this way, it is ensured that the volume of the trapping cavity 17 is the same when the piston 42 is located at the initial position (the first position A1). Figure 1

[0031] Figure 1 The smoke trapping device 100 shown can further comprise a controller, and the controller is used to automatically control the air extraction stroke, the trapping stroke, and the backflow stroke of the piston 42, and automatically control the opening and closing of the first valve 13, the second valve 15, and the third valve, etc., so as to automatically capture the smoke.

[0032] Example 2

[0033] As shown, the smoke trapping method based on the smoke trapping device comprises the following steps: Figure 2 Figure 1 The liquid injection step S11 is to add a predetermined amount of absorbent liquid to the reservoir through the liquid injection port of the reservoir, and then close the liquid injection port.

[0034] The liquid injection step S11 is to add a predetermined amount of absorbent liquid to the reservoir through the liquid injection port of the reservoir, and then close the liquid injection port.

[0035] ​​The suction step S13: moving the piston in the trap from the first position to the second position, so that the flue gas enters the trapping cavity of the trap from the flue gas inlet of the trap;

[0036] The trapping step S15: closing the flue gas inlet of the trap, keeping the piston in the second position, and making the absorbent liquid enter the trapping cavity from the absorbent liquid inlet of the trap through the liquid reservoir; and

[0037] The backflow step S17: closing the flue gas inlet of the trap, opening the liquid injection port of the liquid reservoir, and restoring the piston from the second position to the first position.

[0038] As described above, in the trapping step S15, the trap and the liquid reservoir together form a closed space. During the process of the absorbent liquid entering the trapping cavity 17 from the liquid reservoir, a part of the gas in the trapping cavity will enter the liquid reservoir, and the gas will be fully contacted with the absorbent liquid during the process so that the flue gas is captured and absorbed by the absorbent liquid. The gas entering the liquid reservoir is mainly air or gas that cannot be absorbed by the absorbent liquid.

[0039] Understandably, the suction step S13, the trapping step S15 and the backflow step S17 are a relatively complete trapping process, which can be repeated twice or more times. In this case, the absorbent liquid will capture the flue gas entering the trapping cavity in the two or more times of suction step S13. In the case of repeating the trapping process twice or more times, the backflow step S17 should close the liquid injection port of the liquid reservoir after the piston is restored to the first position, so as to facilitate the subsequent execution of the suction step S13.

[0040] Understandably, the suction stroke, the trapping stroke and the backflow stroke of the piston 42, as well as the opening and closing of the first valve 13, the second valve 15 and the third valve can be automatically controlled by the controller, so as to automatically execute the liquid injection step S11, the suction step S13, the trapping step S15 and the backflow step S17; or even automatically execute the trapping process composed of the suction step S13, the trapping step S15 and the backflow step S17 twice or more times.

[0041] Example 3

[0042] Figure 3 is a schematic view of the flue gas trapping device 100 provided by another embodiment of the present application. Compared with the flue gas trapping device 100 shown in Figure 1 Compared with the flue gas trapping device 100 shown in the above embodiment, the flue gas trapping device 100 of the present embodiment mainly differs in that a stirrer 19 is additionally provided, which is installed in the trap 10 and used to stir the absorbent liquid in the trapping cavity 17, so as to further improve the absorption and trapping effect, i.e., the absorbent liquid in the trapping cavity 17 is stirred in the trapping step.

[0043] The above embodiments only express several implementation manners of the present application, and the description is more specific and detailed, but it should not be understood as a limitation on the patent scope of the present application. It should be noted that for ordinary skilled persons in the art, without departing from the concept of the present application, several modifications and improvements can be made, which are all within the protection scope of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.

Claims

1. A flue gas capture device, characterized by, The device comprises: a collector having a collecting cavity, a flue gas inlet and an absorbent liquid inlet, the opening and closing of the flue gas inlet being controlled by a first valve, and the opening and closing of the absorbent liquid inlet being controlled by a second valve; a reservoir having an inlet and an outlet, the inlet being used to add absorbent liquid to the reservoir, the opening and closing of the inlet being controlled by a third valve, and the outlet being in communication with the absorbent liquid inlet through the second valve; the reservoir being located above the collector or the position of the reservoir relative to the collector being changeable so that the absorbent liquid in the reservoir flows into the collector during the collecting stroke; a suction device comprising a piston, the piston being installed in the collector and reciprocating between a first position and a second position in the collector to change the volume of the collecting cavity; a driver driving the piston to perform a suction stroke, a collecting stroke and a return stroke; in the suction stroke, the first valve is opened and the second valve is closed, the piston moves from the first position to the second position to expand the volume of the collecting cavity, and flue gas enters the collecting cavity from the flue gas inlet; in the collecting stroke, the first valve is closed, the second valve is opened and the third valve is closed, the piston remains in the second position, and absorbent liquid enters the collecting cavity from the reservoir; in the return stroke, the first valve is closed, the second valve is opened and the third valve is opened, and the piston returns from the second position to the first position.

2. The flue gas capture device of claim 1, wherein, The device further comprises a flue gas input device, the output of the flue gas input device being in communication with the flue gas inlet of the collector through the first valve, and being used to heat or burn a cigarette to input flue gas into the collector during the suction stroke.

3. The flue gas capture device of claim 1, wherein, A first limiting part is arranged in the collector to limit the maximum stroke of the piston away from the second position to the first position.

4. The flue gas capture device of claim 1, wherein, The collector further has an absorbent liquid discharge port in communication with the collecting cavity, and the absorbent liquid discharge port is used to discharge absorbent liquid in the collecting cavity.

5. The flue gas capture device of claim 1, wherein, A stirrer is further installed in the collector, and the stirrer is used to stir the absorbent liquid in the collecting cavity.

6. The flue gas capture device of claim 1, wherein, The device further comprises a controller, and the controller is used to control the suction stroke, the collecting stroke and the return stroke of the piston, and automatically control the opening and closing of the first valve, the second valve and the third valve.

7. A flue gas capturing method applied to the flue gas capturing device of claim 1, characterized in that, The method comprises: an injection step: adding a preset amount of absorbent liquid to the reservoir through the injection port of the reservoir, and then closing the injection port; a suction step: expanding the volume of the collecting cavity of the collector, and making flue gas enter the collecting cavity from the flue gas inlet of the collector; a collecting step: closing the flue gas inlet of the collector, maintaining the volume of the collecting cavity, and making the absorbent liquid enter the collecting cavity from the reservoir through the absorbent liquid inlet of the collector; the reservoir being located above the collector or the position of the reservoir relative to the collector being changeable so that the absorbent liquid in the reservoir flows into the collector during the collecting stroke; The backflow step includes: closing the flue gas inlet of the trap, opening the liquid injection port of the liquid reservoir, restoring the volume of the trapping cavity, and allowing at least part of the gas in the trapping cavity to enter the liquid reservoir.

8. The flue gas capture method of claim 7, wherein, The trapping step further includes stirring the absorption liquid in the trapping cavity.

9. The flue gas capture method of claim 7, wherein, The backflow step further includes closing the liquid injection port of the liquid reservoir after the volume of the trapping cavity is restored; and the gas extraction step, the trapping step and the backflow step are sequentially performed at least twice.

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