CN107549864B - Expanded tobacco carbon dioxide recovery device and method - Google Patents
Expanded tobacco carbon dioxide recovery device and method Download PDFInfo
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- CN107549864B CN107549864B CN201710532561.XA CN201710532561A CN107549864B CN 107549864 B CN107549864 B CN 107549864B CN 201710532561 A CN201710532561 A CN 201710532561A CN 107549864 B CN107549864 B CN 107549864B
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Abstract
The invention discloses a device and a method for recovering expanded tobacco carbon dioxide, comprising the following steps: the device comprises an impregnator, a process tank, a recovery pressurizing tank and a diaphragm compressor, wherein the recovery pressurizing tank is respectively connected with the diaphragm compressor and the impregnator through pipelines, the process tank is connected with the recovery pressurizing tank through the diaphragm compressor, and each pipeline is provided with a valve. The invention uses a recovery pressurizing tank to recover carbon dioxide gas, and also removes air for the impregnator and pre-pressurizes, thereby reducing equipment investment and reducing the emission of greenhouse gases; and the diaphragm compressor has large compression ratio, good sealing property and low noise, and compressed gas is not polluted by lubricating oil and other solid impurities, so that the diaphragm compressor is suitable for the field of food-grade tobacco processing. In addition, the whole device is simple in structure and safe and reliable in operation, manpower and material resources are saved for later maintenance and repair, and enterprise benefits are improved.
Description
Technical Field
The invention belongs to the field of tobacco processing equipment, and particularly relates to a device and a method for recovering carbon dioxide from expanded cut tobacco.
Background
At present, the dry ice expanded tobacco technology is widely applied to the field of cigarette making. The technology mainly comprises the processes of tobacco shred impregnation, carbon dioxide recovery and tobacco shred sublimation. In the existing carbon dioxide recovery process, carbon dioxide liquid in the impregnator is retained back to the process tank by self weight after soaking is finished, and carbon dioxide gas is respectively recovered into two recovery tanks by secondary recovery. The carbon dioxide gas in the two recovery tanks is compressed by two compressors respectively.
This process has several drawbacks: firstly, two recovery tanks and two compressors are needed and are arrangedThe preparation is more, the cost is high; secondly, the piston compressor has great noise during working and influences the body of an operator; thirdly, the structure of the compressor is complex and the maintenance is inconvenient; fourthly, in the process, the last of each batch is about 3.5m
3Carbon dioxide gas at a pressure of 2 to 3bar is discharged to the atmosphere, which is not environmentally friendly.
The present invention has been made in view of this situation.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a device and a method for recovering carbon dioxide from expanded cut tobacco.
In order to solve the technical problems, the invention adopts the technical scheme that: an expanded tobacco carbon dioxide recovery device, comprising: the device comprises an impregnator, a process tank, a recovery pressurizing tank and a diaphragm compressor, wherein the recovery pressurizing tank is respectively connected with the diaphragm compressor and the impregnator through pipelines, the process tank is connected with the recovery pressurizing tank through the diaphragm compressor, and each pipeline is provided with a valve.
Furthermore, the recycling pressurizing tank is a horizontal pressure corrosion-resistant container, a first pressure sensor is arranged in the recycling pressurizing tank, and a safety valve for preventing overpressure is arranged at the top of the recycling pressurizing tank.
Furthermore, one end of the diaphragm compressor is connected with the process tank through a secondary compression air outlet pipe, the other end of the diaphragm compressor is connected with the recovery pressurizing tank through a secondary compression air inlet pipe, and carbon dioxide gas in the recovery pressurizing tank is compressed and conveyed to the process tank.
Furthermore, the upper end of the impregnator is connected with a recovery pressurizing tank through a recovery pipe, a second pressure sensor is arranged on the recovery pipe, the lower end of the impregnator is connected with the recovery pressurizing tank through a pressurizing pipe, and the recovery pressurizing tank conveys carbon dioxide gas into the impregnator to discharge air in the impregnator and increase the pressure in the impregnator.
Furthermore, one end of the diaphragm compressor is connected with the recovery pipe through a primary compression air inlet pipe, the other end of the diaphragm compressor is connected with the recovery pressurizing tank through a primary compression air outlet pipe, and the carbon dioxide gas in the impregnator is compressed and conveyed into the recovery pressurizing tank.
Furthermore, the first pressure sensor and the second pressure sensor are respectively connected with the valve, transmit pressure information to the valve controller and control the valve to be automatically opened and closed.
Further, the valve is a pneumatic valve, and the valve controller controls the opening or closing of the valve according to a preset program.
The invention also provides a method for recovering carbon dioxide from the expanded cut tobacco, which comprises the following steps:
s1, communicating the impregnator with a recovery pressurizing tank, and enabling high-pressure carbon dioxide in the impregnator to enter the recovery pressurizing tank through a pipeline until the pressure of the impregnator is consistent with that of the recovery pressurizing tank, and cutting off a passage;
s2, starting a diaphragm compressor to absorb carbon dioxide gas in the impregnator through a pipeline, and compressing and conveying the carbon dioxide gas into a recovery pressurizing tank;
and S3, when the pressure in the recovery pressurizing tank reaches a set first threshold value, the diaphragm compressor compresses the carbon dioxide gas in the recovery pressurizing tank through a pipeline and conveys the carbon dioxide gas into the process tank until the pressure in the recovery pressurizing tank reaches a set second threshold value, and the process tank stops.
Further, when the pressure of the carbon dioxide gas in the impregnator is equal to the atmospheric pressure in step S2, the diaphragm compressor is stopped and the passage between the diaphragm compressor and the impregnator is blocked.
Further, in step S3, the first threshold is the maximum pressure that the recovery pressurizing tank can bear in the safe state.
After adopting the technical scheme, compared with the prior art, the invention has the following beneficial effects:
compared with the prior art, the invention reduces one recovery tank and one compressor, one recovery pressurizing tank can recover carbon dioxide gas, and also can exhaust air for the impregnator and pre-pressurize, thereby reducing equipment investment and reducing emission of greenhouse gases; and the diaphragm compressor has large compression ratio, good sealing property and low noise, and compressed gas is not polluted by lubricating oil and other solid impurities, so that the diaphragm compressor is suitable for the field of food-grade tobacco processing. In addition, the whole device is simple in structure and safe and reliable in operation, manpower and material resources are saved for later maintenance and repair, and enterprise benefits are improved.
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention, are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without limiting the invention to the right. It is obvious that the drawings in the following description are only some embodiments, and that for a person skilled in the art, other drawings can be derived from them without inventive effort. In the drawings:
FIG. 1 is a schematic structural diagram of an expanded tobacco carbon dioxide recovery device according to the present invention;
FIG. 2 is a flow chart of the method for recovering carbon dioxide from expanded tobacco shreds according to the invention.
In the figure: 1. an impregnator; 2. a pressure increasing pipe; 3. a pressure increasing valve; 4. a secondary compression air intake valve; 5. a primary compression air outlet valve; 6. secondarily compressing the air inlet pipe; 7. compressing the air outlet pipe for the first time; 8. a diaphragm compressor; 9. secondarily compressing the air outlet pipe; 10. a secondary compression air outlet valve; 11. a process tank; 12. a primary compression intake valve; 13. compressing the air inlet pipe for the first time; 14. a recovery valve; 15. a first pressure sensor; 16. a safety valve; 17. a recovery pipe; 18. a recycling pressurizing tank; 19. a second pressure sensor.
It should be noted that the drawings and the description are not intended to limit the scope of the inventive concept in any way, but to illustrate it by a person skilled in the art with reference to specific embodiments.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and the following embodiments are used for illustrating the present invention and are not intended to limit the scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example one
As shown in fig. 1, the expanded tobacco carbon dioxide recovery device according to this embodiment includes: the device comprises an impregnator 1, a process tank 11, a recovery pressurizing tank 18, a diaphragm compressor 8, a plurality of pipelines and valves, wherein each pipeline is provided with a valve, and the recovery pressurizing tank 18 is respectively connected with the diaphragm compressor 8, the process tank 11 and the impregnator 1 through pipelines.
Among the above-mentioned technical scheme, retrieve and be equipped with 4 pipelines altogether on the pressurization jar 18, wherein two are direct to be connected with the both ends of steeping cell 1 for directly balancing the pressure of gaseous in the steeping cell 1, two in addition are led to steeping cell 1 and technology respectively after being connected with diaphragm compressor 8 and irritate 11, retrieve the pressurization jar 18 and irritate 11 pressure of gaseous in the process with steeping cell 1, technology through the indirect control of the work of diaphragm compressor 8, all be equipped with the valve on the pipeline, reach the purpose of controlling gas pressure in the different equipment through the break-make of each pipeline of valve control.
The recycling pressurizing tank 18 is a horizontal pressure corrosion-resistant container, a first pressure sensor 15 is arranged inside the recycling pressurizing tank, and a safety valve 16 for preventing overpressure is arranged at the top of the recycling pressurizing tank.
Among the above-mentioned technical scheme, because of retrieving gaseous probably having corrosivity, and the jar interior pressure often changes as required, so retrieve pressurizing jar 18 and choose for use the stainless steel material that can not warp or damage when atmospheric pressure is very big or very little, be equipped with pressure sensor 15 in the jar, convey the jar interior atmospheric pressure numerical value to the control end in real time, make the staff in time make corresponding processing, retrieve pressurizing jar 18 top still is equipped with relief valve 16, prevent that the jar interior pressure from surpassing rated value and causing equipment to damage.
The upper end of the impregnator 1 is connected with a recovery pressurizing tank 18 through a recovery pipe 17, a second pressure sensor 19 is arranged on the recovery pipe, the lower end of the impregnator is connected with the recovery pressurizing tank 18 through a pressurizing pipe 2, and the recovery pressurizing tank 18 conveys carbon dioxide gas into the impregnator 1 to discharge air in the impregnator 1 and increase the pressure in the impregnator.
In the technical scheme, the recovery pipe 17 is provided with the recovery valve 14, when the recovery valve 14 is opened, the high-pressure carbon dioxide gas in the impregnator 1 enters the recovery pressurizing tank 18 through the recovery pipe 17 to recover the carbon dioxide gas in the impregnator 1, and the recovery pipe 17 is provided with the second pressure sensor 19 for detecting the air pressure in the impregnator in real time and transmitting the numerical value to the control end; when the mixed gas needs to be exhausted from the impregnator 1, the pressure increasing valve 3 arranged on the pressure increasing pipe 2 is opened, the carbon dioxide gas is sent to the impregnator 1 by the recovery pressure increasing tank 18 through the pressure increasing pipe 2, the air is exhausted, and the impregnator 1 is pressurized to the set pressure in advance.
One end of the diaphragm compressor 8 is connected with a recovery pipe 17 through a primary compression air inlet pipe 13, the other end of the diaphragm compressor is connected with a recovery pressurizing tank 18 through a primary compression air outlet pipe 7, and the carbon dioxide gas in the impregnator 1 is compressed and conveyed into the recovery pressurizing tank 18.
In the above technical scheme, once compress intake pipe 13 and be connected with recovery tube 17 through a three-way pipe, diaphragm compressor 8 starts, open simultaneously and set up once compress intake valve 12 and the once compression air outlet valve 5 of setting on once compressing the outlet duct 7 in once compressing the intake pipe 13, retrieve pressurizing jar 18 this moment, once compress the outlet duct 7, diaphragm compressor 8, once compress intake pipe 13, recovery tube 17, steeping ware 1 forms a intercommunication wind path, through diaphragm compressor 8's work, inhale the carbon dioxide gas in the steeping ware 1 and get to retrieve pressurizing the jar in.
One end of the diaphragm compressor 8 is connected with the process tank 11 through a secondary compression air outlet pipe 9, the other end of the diaphragm compressor is connected with the recovery pressurizing tank through a secondary compression air inlet pipe 6, and the carbon dioxide gas in the recovery pressurizing tank 18 is compressed and conveyed into the process tank 11.
In the above technical scheme, after the carbon dioxide gas in the recovery pressurizing tank 18 is accumulated to a certain limit, in order to ensure the safety of the equipment, the secondary compression air inlet valve 4 arranged on the secondary compression air inlet pipe 6 and the secondary compression air outlet valve 10 arranged on the secondary compression air outlet pipe 9 are opened, and the diaphragm compressor 8 works to suck the carbon dioxide gas in the recovery pressurizing tank 18 into the process tank 11, and the subsequent process tank 11 can flush the carbon dioxide gas into the impregnator again for recycling.
The first pressure sensor 15 and the second pressure sensor 19 are respectively connected with the valve, transmit pressure information to a controller on the valve, and control the valve to be automatically opened and closed. The valve is a pneumatic valve, and a controller in the valve controls the valve to be automatically opened and closed according to a set program.
Among the above-mentioned technical scheme, all valves of control conduit break-make are pneumatic valves, and are connected with first pressure sensor 15, second pressure sensor 19, receive the common program control who sets up in advance, two pressure sensors send atmospheric pressure information to the control end in real time, the control end is compared with the numerical value of predetermineeing according to different information numerical values, the controller on every valve after the processing sends corresponding switching instruction, the automatic switching of control valve, the error is little, and is efficient, has greatly improved work efficiency.
Example two
As shown in fig. 2, the method for recovering carbon dioxide from expanded cut tobacco according to this embodiment includes:
101. the impregnator 1 is communicated with a recovery pressurizing tank 18, high-pressure carbon dioxide in the impregnator enters the recovery pressurizing tank through a pipeline, and a passage is cut off until the pressure in the impregnator is consistent with that in the recovery pressurizing tank;
in the above-described configuration, when the carbon dioxide gas is recovered in the impregnator 1, the recovery valve 14 is opened, the carbon dioxide gas flows from the impregnator 1 into the recovery pressurized tank 18 along the recovery pipe 17, and when the pressure in the recovery pressurized tank 18 is detected by the first sensor 15 and is equal to the pressure in the impregnator 1 detected by the second sensor 19, the recovery valve 14 is closed.
102. Starting a diaphragm compressor to absorb carbon dioxide gas in the impregnator through a pipeline, and compressing and conveying the carbon dioxide gas into a recovery pressurizing tank;
among the above-mentioned technical scheme, the carbon dioxide gas pressure of retrieving the pressurized jar 18 this moment and steeping in the ware 1 is equal, opens once compression admission valve 12, starts diaphragm compressor 8 simultaneously, inhales diaphragm compressor 8 with the carbon dioxide gas in the steeping ware 1 through once compressing intake pipe 13, opens once compression air outlet valve 5 this moment, and the carbon dioxide gas through compression enters into through once compressing outlet pipe 7 and retrieving pressurized jar 18. When the second pressure sensor 19 detects that the pressure in the impregnator 1 is approximately equal to the atmospheric pressure, the primary compression intake valve 12 and the primary compression exhaust valve 5 are closed.
103. When the pressure in the recovery pressurizing tank reaches a set first threshold value, the diaphragm compressor compresses the carbon dioxide gas in the recovery pressurizing tank through a pipeline and conveys the carbon dioxide gas into the process tank until the pressure in the recovery pressurizing tank reaches a set second threshold value.
In the above technical solution, in the operation process of step 102, when the first pressure sensor 15 detects that the pressure in the recovery pressurizing tank 18 reaches the first threshold value, the secondary compression air inlet valve 4 is opened, the gas is sucked into the diaphragm compressor 8 along the secondary compression air inlet pipe 6, and the secondary compression air outlet valve 10 is opened at the same time, and the compressed gas flows into the process tank 11 along the secondary compression air outlet pipe 9. The first threshold value is the maximum pressure which can be borne by the recovery pressurizing tank in a safe state.
According to the expanded tobacco carbon dioxide recovery device and method, the carbon dioxide gas can be recovered by using one recovery pressurizing tank, and air is exhausted from the impregnator and is pre-pressurized, so that the equipment investment is reduced, and the emission of greenhouse gases is reduced; and the diaphragm compressor has large compression ratio, good sealing property and low noise, and compressed gas is not polluted by lubricating oil and other solid impurities, so that the diaphragm compressor is suitable for the field of food-grade tobacco processing. In addition, the whole device is simple in structure and safe and reliable in operation, manpower and material resources are saved for later maintenance and repair, and enterprise benefits are improved.
Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (9)
1. A carbon dioxide recovery device for expanded cut tobacco is characterized by comprising: the device comprises an impregnator, a process tank, a recovery pressurizing tank and a diaphragm compressor, wherein the recovery pressurizing tank is respectively connected with the diaphragm compressor and the impregnator through pipelines;
the upper end of the impregnator is connected with a recovery pressurizing tank through a recovery pipe, a second pressure sensor is arranged on the recovery pipe, the lower end of the impregnator is connected with the recovery pressurizing tank through a pressurizing pipe, and the recovery pressurizing tank conveys carbon dioxide gas to the impregnator to discharge air in the impregnator and increase pressure in the impregnator.
2. The expanded tobacco carbon dioxide recovery device according to claim 1, characterized in that: the recycling pressurizing tank is a horizontal pressure corrosion-resistant container, a first pressure sensor is arranged inside the recycling pressurizing tank, and a safety valve for preventing overpressure is arranged at the top of the recycling pressurizing tank.
3. The expanded tobacco carbon dioxide recovery device according to claim 1, characterized in that: one end of the diaphragm compressor is connected with the process tank through a secondary compression air outlet pipe, the other end of the diaphragm compressor is connected with the recovery pressurizing tank through a secondary compression air inlet pipe, and carbon dioxide gas in the recovery pressurizing tank is compressed and conveyed to the process tank.
4. The expanded tobacco carbon dioxide recovery device according to claim 1, characterized in that: one end of the diaphragm compressor is connected with the recovery pipe through a primary compression air inlet pipe, the other end of the diaphragm compressor is connected with the recovery pressurizing tank through a primary compression air outlet pipe, and carbon dioxide gas in the impregnator is compressed and conveyed into the recovery pressurizing tank.
5. The expanded tobacco carbon dioxide recovery device according to claim 2, characterized in that: the first pressure sensor and the second pressure sensor are respectively connected with the valve, transmit pressure information to the valve controller and control the valve to be automatically opened and closed.
6. The expanded tobacco carbon dioxide recovery device according to claim 5, characterized in that: the valve is a pneumatic valve, and the valve controller controls the valve to be opened or closed according to a preset program.
7. A method for recycling carbon dioxide from cut tobacco according to any one of claims 1 to 6, comprising:
s1, communicating the impregnator with a recovery pressurizing tank, and enabling high-pressure carbon dioxide in the impregnator to enter the recovery pressurizing tank through a pipeline until the pressure of the impregnator is consistent with that of the recovery pressurizing tank, and cutting off a passage;
s2, starting a diaphragm compressor to absorb carbon dioxide gas in the impregnator through a pipeline, and compressing and conveying the carbon dioxide gas into a recovery pressurizing tank;
and S3, when the pressure in the recovery pressurizing tank reaches a set first threshold value, the diaphragm compressor compresses the carbon dioxide gas in the recovery pressurizing tank through a pipeline and conveys the carbon dioxide gas into the process tank until the pressure in the recovery pressurizing tank reaches a set second threshold value, and the process tank stops.
8. The method for recovering carbon dioxide from cut tobacco according to claim 7, wherein: when the pressure of the carbon dioxide gas in the impregnator is equal to the atmospheric pressure in step S2, the diaphragm compressor is stopped and the passage between the diaphragm compressor and the impregnator is cut off.
9. The method for recovering carbon dioxide from cut tobacco according to claim 7, wherein: the first threshold value in step S3 is the maximum pressure that the recovery pressurizing tank can bear in the safe state.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710532561.XA CN107549864B (en) | 2017-07-03 | 2017-07-03 | Expanded tobacco carbon dioxide recovery device and method |
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| CN201710532561.XA CN107549864B (en) | 2017-07-03 | 2017-07-03 | Expanded tobacco carbon dioxide recovery device and method |
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| CN107549864B true CN107549864B (en) | 2020-02-11 |
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| CN112273703B (en) * | 2020-11-10 | 2022-04-12 | 常德长岭机械制造科技有限公司 | Carbon monoxide recovery device for tobacco shred expansion |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3165791B2 (en) * | 1997-03-27 | 2001-05-14 | 日本たばこ産業株式会社 | Method for producing expanded tobacco material |
| US6209546B1 (en) * | 1998-11-30 | 2001-04-03 | Truman W. Ellison | Apparatus and method for improved hydrate formation and improved efficiency of recovery of expansion agent in processes for expanding tobacco and other agricultural products |
| CN2560219Y (en) * | 2002-08-07 | 2003-07-16 | 秦皇岛烟草机械有限责任公司 | Tobacco expanding and macerating apparatus |
| CN201173381Y (en) * | 2008-04-01 | 2008-12-31 | 山东中烟工业公司 | Tobacco shred expansion line infuser carbon dioxide recovering apparatus |
| CN202819598U (en) * | 2012-08-28 | 2013-03-27 | 厦门烟草工业有限责任公司 | Carbon dioxide recovery balloon protective device |
| CN204952605U (en) * | 2015-08-20 | 2016-01-13 | 福建省燕京惠泉啤酒股份有限公司 | Carbon dioxide recovery system |
| CN205603224U (en) * | 2016-04-20 | 2016-09-28 | 秦皇岛烟草机械有限责任公司 | Tobacco expansion system's carbon dioxide recovery unit |
| CN206165797U (en) * | 2016-11-10 | 2017-05-17 | 秦皇岛烟草机械有限责任公司 | Pipe tobacco saturating device |
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