CN102871208B - A kind of tobacco leaf rapid oxygen reduction disinsection method - Google Patents
A kind of tobacco leaf rapid oxygen reduction disinsection method Download PDFInfo
- Publication number
- CN102871208B CN102871208B CN201110204134.1A CN201110204134A CN102871208B CN 102871208 B CN102871208 B CN 102871208B CN 201110204134 A CN201110204134 A CN 201110204134A CN 102871208 B CN102871208 B CN 102871208B
- Authority
- CN
- China
- Prior art keywords
- seal cavity
- tobacco leaf
- nitrogen
- generating device
- pressure swing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Catching Or Destruction (AREA)
Abstract
The invention provides a kind of tobacco leaf rapid oxygen reduction disinsection method, it is characterized in that comprising the following steps: 1) adopt seal cavity by tobacco leaf stack sealing; 2) in seal cavity, be filled with nitrogen by THE PRESSURE SWING ADSORPTION NITROGEN GENERATING DEVICE, oxygen concentration in seal cavity is down to less than 5%; 3) in seal cavity, be filled with the carbon dioxide of high concentration, gas concentration lwevel in seal cavity be adjusted to 3-50%, now in seal cavity oxygen concentration below 2%; 4), under normal temperature, above-mentioned gas concentration 2-10 days killing tobacco pests are kept.It is 10-48 hour that the present invention's nitrogen falls oxygen with being filled with the carbon dioxide time, the sealing desinsection time is 3-10 days, its outstanding advantages is thoroughly to kill the tobacco-plant pest-insect in seal cavity in the short time, reduce the economic loss that tobacco leaf insect pest causes, and cost is low, to tobacco leaf and environment without any ill-effect.
Description
Technical field
The invention belongs to storage tobacco insecticidal technology field, be specifically related to a kind of method of tobacco leaf rapid oxygen reduction desinsection.
Background technology
Tobacco leaf needed storage and the maintenance of 2-3 before making cigarette product, to complete the natural alcoholization process of tobacco leaf, reached the object improving quality of tobacco.Alcoholization process is generally carried out leaving in warehouse, and worm-eaten easily occurs the tobacco leaf of long-term storage in warehouse, is the problem that puzzlement must be paid attention to and compare to tobacco business always.
Current tobacco leaf desinsection main stream approach is the hydrogen phosphide (PH of 1 year twice generality
3), Celfume (CH
3the fumigant insect killing such as Br).Although this kind of method insecticidal effect is obvious, due to severe toxicity, inflammable, the explosive character of this insecticides, in fumigant insect killing process, easily cause poisoning and other the pernicious security incidents of personnel, bring certain harm can to surrounding environment and people and animals simultaneously.In addition, the waste gas after stifling, waste liquid, waste residue are carried out nontoxic process and also comparatively bothered.Along with the continuous enhancing of environmental consciousness, current many medicaments have been listed in forbidding product, and along with the enhancing of people's environmental consciousness, hydrogen phosphide etc. can progressively be stopped using in tobacco business.And the controlled atmosphere insecticidal technology with the advantage such as environmental protection, low-residual receives the concern of common people, become the main flow of reserve crop protection technology gradually.
Recently the tobacco leaf controlled atmosphere sealing compound disinsection method promoted the use of, is adopt certain oxygen fallen in oxygen agent absorption sealed storage cigarette space, confined space oxygen concentration is down to lower level.The defect of this method be to fall oxygen agent consumes in the process of oxygen can heat release, it is faster to fall oxygen speed, and liberated heat makes local temperature in tobacco leaf stack higher, tobacco leaf can be caused to go rancid, the phenomenon such as heartburn, knot tying, makes tobacco leaf forfeiture use value.And control tobacco leaf controlled atmosphere sealing compound oxygen speed is fallen, make the impact of heat release on tobacco leaf less, form good desinsection environment required time relatively long, the oxygen concentration in enclosure space could be down to less than 2% by time of even one month generally to need several weeks, namely need the time of more than one month stored tobacco pests could be killed, therefore prevention and control of plant diseases, pest control effect is undesirable.
Just because current sheet cigarette storing technology remains in such or such problem, how exploring more advanced sheet cigarette storage insecticidal technology, is being the common aspiration of tobacco business.
The people such as Zou Xing adopt two steps to control the storage condition of tobacco mellowing: the first step is for pack tobacco leaf with plastic sheeting, adopt oxygen-absorbing material or the oxygen concentration percent by volume stored in sealing bag is reduced to 0.01-4% by tobacco leaf with nitrogen, carbon dioxide or inert gas, seal 10-400 days; Second step is after the first step kills insect in tobacco leaf and mould completely, supplemental oxygen or air in tobacco leaf sealing bag, the oxygen concentration percent by volume in bag is made to rise to 4-40%, storage time is 10-700 days (Zou Xing, Zou Duanduan, Wang Qiaoxian, a disinsection mold-proof method for no effect on tobacco mellowing, China Patent No.: CN101416771A).The method hypoxemia processing time is longer, and excessively reduce tobacco mellowing speed, tobacco leaf easily occurs the phenomenon that darkens, and availability declines.
China Patent Publication No. 1633925 discloses a kind of carbon dioxide control tobacco leaf insect technology, and it retains CO in confined conditions
2concentration more than 65%, closes down more than 6 days time, very can kill the adult of tobacco leaf insect, larva, pupa and ovum.CO needed for the method
2concentration is high, and CO in air
2concentration only 0.03%, cigarette factory uses the method desinsection cost high on a large scale.
Summary of the invention
Technical problem to be solved by this invention is for above shortcomings in prior art, provides a kind of pollution-free, noresidue, safety, environmental protection, cost low, and the method for tobacco leaf rapid oxygen reduction desinsection efficiently.
Solving technical scheme that the technology of the present invention problem adopts is that this tobacco leaf rapid oxygen reduction disinsection method first adopts THE PRESSURE SWING ADSORPTION NITROGEN GENERATING DEVICE to make oxygen concentration in seal cavity drop to less than 5% by being filled with nitrogen and making the gaseous mixture pumpback of discharging in seal cavity circulate in the adsorption tanks of THE PRESSURE SWING ADSORPTION NITROGEN GENERATING DEVICE in the seal cavity depositing tobacco leaf stack, in seal cavity, be filled with gas concentration lwevel in carbon dioxide to seal cavity is again 3-50%, makes oxygen concentration in tobacco leaf stack be down to less than 2% fast.The microorganism that Oxygen control can suppress and kill in storage environment below 2% and plant pest.
Described THE PRESSURE SWING ADSORPTION NITROGEN GENERATING DEVICE is communicated with seal cavity by pipeline.Making nitrogen by pressure swing adsorption (PressureSwingAdsorption) is that a kind of carbon molecular sieve that adopts is as the advanced gas isolation technics of adsorbent.The adsorption rate of carbon molecular sieve to oxygen nitrogen differs greatly, and according to pressure-variable adsorption principle, the adsorption capacity of carbon molecular sieve changes with the change of pressure, therefore can under an increased pressure, and from air, adsorbing separation goes out nitrogen.Through the compressed air of purifying drying, pressurized adsorbent is carried out in the adsorption tanks that carbon molecular sieve is housed, due to aerodynamic effects, oxygen in carbon molecular sieve micropore diffusion rate much larger than nitrogen, oxygen is by carbon molecular sieve Preferential adsorption, nitrogen is got up by enrichment in the gas phase, is outputted to deposit in the seal cavity of tobacco leaf stack by outlet formation finished product nitrogen; The impurity such as then adsorption tanks are through being decompressed to normal pressure, the oxygen that carbon molecular sieve desorption adsorbs, realize regeneration.Making nitrogen by pressure swing adsorption technology is used for on-the-spot confession nitrogen, and convenience, efficiency are high.
Utilize CO
2get rid of the air in seal cavity, tobacco-plant pest-insect can because of anoxic death by suffocation or make polypide organ generation dysbolism and metabolic disorder and dead, CO
2the adult of tobacco-plant pest-insect can not only be killed, and the larva of tobacco-plant pest-insect, ovum and pupa can also be killed.
Tobacco leaf rapid oxygen reduction disinsection method of the present invention, specifically comprises the following steps:
1) adopt seal cavity by tobacco leaf stack sealing
The seal cavity of tobacco leaf stack is furnished with air inlet, exhaust outlet and gas concentration detector, and described gas concentration detector comprises oxygen concentration detecting instrument and gas concentration lwevel detector, and air inlet and exhaust outlet are by pipeline and valve and ft connection or sealing;
2) in seal cavity, be filled with nitrogen by air inlet, by the air in exhaust outlet discharge seal cavity or gaseous mixture, make oxygen concentration in seal cavity be down to less than 5%
Pipeline is adopted seal cavity air inlet to be connected to the inflation inlet of THE PRESSURE SWING ADSORPTION NITROGEN GENERATING DEVICE, seal cavity exhaust outlet is connected on the bleeding point of THE PRESSURE SWING ADSORPTION NITROGEN GENERATING DEVICE, form closed circuit, open THE PRESSURE SWING ADSORPTION NITROGEN GENERATING DEVICE, the made nitrogen of THE PRESSURE SWING ADSORPTION NITROGEN GENERATING DEVICE is filled with the seal cavity of tobacco leaf stack, air in seal cavity or to THE PRESSURE SWING ADSORPTION NITROGEN GENERATING DEVICE, further separated oxygen in the adsorption tanks of carbon molecular sieve is housed by the bleeding point pumpback of THE PRESSURE SWING ADSORPTION NITROGEN GENERATING DEVICE again with the mist of nitrogen, the concentration of made nitrogen is increased further, make to get back in seal cavity nitrogen gas concn in the circulating air of THE PRESSURE SWING ADSORPTION NITROGEN GENERATING DEVICE bleeding point gradually to increase, THE PRESSURE SWING ADSORPTION NITROGEN GENERATING DEVICE and seal cavity air inlet and exhaust outlet valve is closed when oxygen concentration is down to below 5% in seal cavity,
Adopt in the present invention in THE PRESSURE SWING ADSORPTION NITROGEN GENERATING DEVICE nitrogen deoxygenation gas and tobacco leaf stack sealing space and discharge gas and formed and circulate, greatly reduce in seal cavity and reach circulation timei needed for less than 5% oxygen concentration.THE PRESSURE SWING ADSORPTION NITROGEN GENERATING DEVICE is when directly using air deoxygenation nitrogen in addition, nitrogen concentration processed higher (as nitrogen concentration processed be greater than 95% time), power demand is higher, produce cost higher, when not using circulating air, oxygen concentration in seal cavity is down to less than 5% required time longer, consumed energy is larger.Be recovered to discharging gas in tobacco leaf stack sealing space in THE PRESSURE SWING ADSORPTION NITROGEN GENERATING DEVICE adsorption tanks and recycle (and suitably supplementing extraneous air) in the present invention, the nitrogen gas concn in air is much higher than due to nitrogen gas concn in the discharge gas that this recycles, THE PRESSURE SWING ADSORPTION NITROGEN GENERATING DEVICE is made to use same power just can make the nitrogen of higher concentration (as in 1 minute like this, output nitrogen gas concn just can be made to reach 99.99%), and (being down to 5% required time as made oxygen concentration in seal cavity under non-cycling state is 48-72 hour to make oxygen concentration in seal cavity be down to less than 5% in the time than much less under non-cycling state, the present invention adopts circulating air, and making oxygen concentration in seal cavity be down to 5% required time is 6-48 hour).
3) in seal cavity, carbon dioxide is filled with
Seal cavity air inlet is connected on carbon dioxide air source, exhaust outlet connects air exhauster, open air inlet valve and be filled with carbon dioxide, and open exhaust outlet valve opening air exhauster, when gas concentration lwevel in seal cavity is 3-50% stop inflate and close air inlet valve and exhaust outlet valve, now in seal cavity oxygen concentration below 2%;
4), under normal temperature, step 3 is kept) described gas concentration 2-10 days.
Preferably, described seal cavity can adopt closed chamber or sealing tent.
Further preferably, described sealing tent adopts oxygen transmission rate to be less than 100mL/daym
2plastic sheeting preparation.
Preferably, described variable-pressure adsorption equipment produces nitrogen amount at 20m
3/ more than h, with the made nitrogen gas concn of air more than 90%.
Preferably, in described carbon dioxide air source carbon dioxide purity more than 95%.Carbon dioxide air source can be commercially available steel cylinder dress carbon dioxide gas.
Making nitrogen by pressure swing adsorption oxygen reducing technology is applied in tobacco desinsection by this invention, substantially reduces and falls the oxygen time; The fatal rate of tobacco-plant pest-insect is improved when higher oxygen concentration by being filled with carbon dioxide.Advantage of the present invention is as follows:
1. it is short to fall the oxygen time, has no side effect.Adopt making nitrogen by pressure swing adsorption to fall oxygen cycle technology and the time that oxygen concentration in seal cavity is down to less than 5% is only 6-48 hour, can power saving about 50% (compared with acyclic air), and heat damage tobacco leaf can not be produced, do not affect the follow-up alcoholization process of tobacco leaf stack.
2. desinsection is thorough rapidly, adopts the disinsection method that hypoxemia and certain gas concentration lwevel combine, and sealing keeps 3-10 days, and the stored tobacco pests death rate reaches 100%.
3. environmental protection, the present invention, carrying out not using any chemicals in Storage tobacco desinsection process, can not produce poisonous and hazardous material, therefore can not pollute tobacco leaf in desinsection process, can not cause environmental pollution, meet the requirement of cleaner production.
4. economize energy, on the inflation inlet adopting seal cavity air inlet and exhaust outlet pipeline to be connected respectively to THE PRESSURE SWING ADSORPTION NITROGEN GENERATING DEVICE and bleeding point, nitrogen-rich gas in seal cavity is made to be circulated back to the bleeding point of THE PRESSURE SWING ADSORPTION NITROGEN GENERATING DEVICE gradually, greatly reduce the power reaching circulation timei and varying-voltage adsorption nitrogen machine needed for 5% oxygen concentration, save electric energy.
Accompanying drawing explanation
Fig. 1 is the connection diagram of seal cavity and THE PRESSURE SWING ADSORPTION NITROGEN GENERATING DEVICE in the present invention's specific embodiment;
Fig. 2 is seal cavity and CO in the present invention's specific embodiment
2the connection diagram of source of the gas.
In figure: 1-seal cavity; 2-THE PRESSURE SWING ADSORPTION NITROGEN GENERATING DEVICE; 3-air inlet valve; 4-exhaust outlet valve; 5-inflation inlet valve; 6-bleeding point valve; 7-atmospheric valve; 8-Pressure gauge; 9-stop valve 10-steel cylinder dress carbon dioxide air source.
Detailed description of the invention
For making those skilled in the art understand technical scheme of the present invention better, below in conjunction with accompanying drawing, the present invention is described in further detail.In the following examples, THE PRESSURE SWING ADSORPTION NITROGEN GENERATING DEVICE 2 adopts the Mobile pressure swing adsorption nitrogen producing machine of model LDPN-50/99.5HP.
Embodiment 1:
The present embodiment uses 50 redrieds that part is infested, and cigarette is stamped volume and is about 30m
3, seal cavity is sealing tent.Be illustrated in figure 1 the connection diagram of seal cavity and THE PRESSURE SWING ADSORPTION NITROGEN GENERATING DEVICE in the present embodiment.
The present embodiment comprises following step:
1) adopt sealing tent 1 by tobacco leaf stack sealing
According to the required area sealing tent counterdie of tobacco leaf buttress position size calculating, and lay for the moistureproof moistureproof thing also can protecting sealing tent counterdie bottom buttress position, as brown paper, honeycomb cardboard, gunnysack etc.
Then the sealing tent counterdie that the composite membrane that tiles on moistureproof thing makes.In the present embodiment, sealing tent plastic sheeting adopts the polyethylene composite film that 0.08mm is thick, and oxygen transmission rate is less than 60mL/daym
2.Sealing tent counterdie re-lays one deck sark, and sark can select brown paper, honeycomb cardboard or gunnysack etc.The size of sark and the size of stacking bottom surface basically identical.On sark, stacking smoke box forms tobacco leaf stack.
Cover seals the cover film of tent, together with being heat sealing at cover film by the counterdie of sealing tent.
The seal cavity of tobacco leaf stack is furnished with air inlet, exhaust outlet and gas concentration detector, and described gas concentration detector comprises oxygen concentration detecting instrument and gas concentration lwevel detector, and air inlet and exhaust outlet are by pipeline and valve and ft connection or sealing;
2) be filled with nitrogen by THE PRESSURE SWING ADSORPTION NITROGEN GENERATING DEVICE 2 air inlet by sealing tent 1, by the air in exhaust outlet discharge sealing tent 1 or gaseous mixture, make oxygen concentration in sealing tent 1 be down to less than 5%
First U-tube differential manometer is used to carry out negative pressure test to sealing tobacco leaf stack, to detect the sealing effectiveness of sealing tent.Common seal standard is that to go up to be less than 100Pa with pressure in 5 minutes be qualified, and in the present embodiment, in 5 minutes, pressure gos up for 94Pa, and sealing effectiveness meets the requirements.
Then air inlet and exhaust outlet pipeline are connected respectively to the circulation canal inflation inlet of THE PRESSURE SWING ADSORPTION NITROGEN GENERATING DEVICE and bleeding point being formed and utilizes the deoxygenation of air-making nitrogen, regulate atmospheric valve 7, make bleeding point air quantity be slightly less than inflation inlet air quantity, prevent sealing tent 1 to take out brokenly.As shown in Figure 1, open THE PRESSURE SWING ADSORPTION NITROGEN GENERATING DEVICE 2, the made nitrogen of THE PRESSURE SWING ADSORPTION NITROGEN GENERATING DEVICE is filled with in the sealing tent 1 of tobacco leaf stack, air in sealing tent 1 or to THE PRESSURE SWING ADSORPTION NITROGEN GENERATING DEVICE, further separated oxygen in the adsorption tanks of carbon molecular sieve is housed by the bleeding point pumpback of THE PRESSURE SWING ADSORPTION NITROGEN GENERATING DEVICE again with the mist of nitrogen, the concentration of made nitrogen is increased further, make to get back in seal cavity nitrogen gas concn in the circulating air of THE PRESSURE SWING ADSORPTION NITROGEN GENERATING DEVICE bleeding point gradually to increase, THE PRESSURE SWING ADSORPTION NITROGEN GENERATING DEVICE 2 is closed 5% time when oxygen detection instrument records oxygen concentration in sealing tent, and air inlet and exhaust outlet valve, THE PRESSURE SWING ADSORPTION NITROGEN GENERATING DEVICE has run 6 hours.
3) in sealing tent 1, carbon dioxide is filled with
As shown in Figure 2, air inlet is connected on steel cylinder dress carbon dioxide air source 10 by pipeline, exhaust outlet connects air exhauster, open air inlet valve 3 and be filled with carbon dioxide, and open exhaust outlet valve 4 and open air exhauster, stop inflation when carbon dioxide detector records when gas concentration lwevel is 3% in sealing tent 1.Now to seal in tent 1 oxygen concentration below 2%.
4) desinsection is sealed
Keeping this embodiment step 3) described gas concentration 10 days removes sealing tent 1 afterwards, and adding up the tobacco-plant pest-insect death rate in each smoke box is 100%.
Embodiment 2:
The present embodiment uses 100 redrieds that part is infested, and tobacco leaf heap is stamped volume and is about 60m
3, seal cavity is sealing tent.
The step that the present embodiment comprises is substantially the same manner as Example 1, and difference is:
Step 1) in the sealing tent plastic sheeting that adopts be the polypropylene composite film that 0.10mm is thick, oxygen transmission rate is less than 80mL/daym
2.
Step 2) in close THE PRESSURE SWING ADSORPTION NITROGEN GENERATING DEVICE when oxygen detection instrument records oxygen concentration in sealing tent 2% time, THE PRESSURE SWING ADSORPTION NITROGEN GENERATING DEVICE has run 14 hours.
Step 3) in when carbon dioxide detector record sealing tent in gas concentration lwevel be 25% time stop inflation.
Keep gas concentration described in this embodiment to take sealing tent apart after 6 days, adding up the tobacco-plant pest-insect death rate in each smoke box is 100%.
Embodiment 3:
The present embodiment uses 150 redrieds that part is infested, and cigarette is stamped volume and is about 90m
3, seal cavity is sealing tent.
The step that the present embodiment comprises is substantially the same manner as Example 1, and difference is:
Step 1) in the sealing tent plastic sheeting that adopts be 0.12mm terylene composite membrane, oxygen transmission rate is less than 100mL/daym
2.
Step 2) in close THE PRESSURE SWING ADSORPTION NITROGEN GENERATING DEVICE when oxygen detection instrument records oxygen concentration in sealing tent 0.5% time, THE PRESSURE SWING ADSORPTION NITROGEN GENERATING DEVICE has run 48 hours.
Step 3) in when carbon dioxide detector record sealing tent in gas concentration lwevel be 50% time stop inflation.
Keep gas concentration described in this embodiment to remove sealing tent afterwards in 2 days, adding up the tobacco-plant pest-insect death rate in each smoke box is 100%.
Embodiment 4:
The present embodiment uses 150 redrieds that part is infested, and cigarette is stamped volume and is about 90m
3, seal cavity is closed chamber.
The present embodiment comprises following step:
1) adopt closed chamber by tobacco leaf stack sealing
Tobacco leaf stack to be positioned in closed chamber and to close closed chamber.
2) by THE PRESSURE SWING ADSORPTION NITROGEN GENERATING DEVICE, oxygen concentration in closed chamber is down to less than 5%
U-tube differential manometer is used to carry out negative pressure test to sealing tobacco leaf stack, to detect the sealing effectiveness of closed chamber.In 5 minutes, pressure gos up for 88Pa, and sealing effectiveness meets the requirements.
Then air inlet and exhaust outlet pipeline are connected respectively on the inflation inlet of THE PRESSURE SWING ADSORPTION NITROGEN GENERATING DEVICE and bleeding point and form circulation canal, regulate atmospheric valve, make bleeding point air quantity be slightly less than inflation inlet air quantity.Opening device, close THE PRESSURE SWING ADSORPTION NITROGEN GENERATING DEVICE when oxygen detection instrument to record in closed chamber oxygen concentration 5% time, THE PRESSURE SWING ADSORPTION NITROGEN GENERATING DEVICE has run 36 hours.
3) in closed chamber, carbon dioxide is filled with
Air inlet is connected on carbon dioxide air source by pipeline, stops inflation when carbon dioxide detector records when gas concentration lwevel is 50% in sealing tent.
4) desinsection is sealed
Keep gas concentration described in this embodiment to open closed chamber after 3 days, adding up the tobacco-plant pest-insect death rate in each smoke box is 100%.
All the other are in the same manner as in Example 1.
Embodiment 5:
The present embodiment uses 150 redrieds that part is infested, and cigarette is stamped volume and is about 90m
3, seal cavity is closed chamber.
The present embodiment comprises following step:
1) cigarette is stamped be positioned in closed chamber
Tobacco leaf stack to be positioned in closed chamber and to close closed chamber.
2) by THE PRESSURE SWING ADSORPTION NITROGEN GENERATING DEVICE, oxygen concentration in closed chamber is down to less than 2%
U-tube differential manometer is used to carry out negative pressure test to sealing tobacco leaf stack, to detect the sealing effectiveness of closed chamber.In 5 minutes, pressure gos up for 95Pa, and sealing effectiveness meets the requirements.
Then air inlet and exhaust outlet pipeline are connected respectively on the inflation inlet of THE PRESSURE SWING ADSORPTION NITROGEN GENERATING DEVICE and bleeding point and form circulation canal, regulate atmospheric valve, make bleeding point air quantity be slightly less than inflation inlet air quantity.Opening device, close THE PRESSURE SWING ADSORPTION NITROGEN GENERATING DEVICE when oxygen detection instrument to record in closed chamber oxygen concentration 2% time, THE PRESSURE SWING ADSORPTION NITROGEN GENERATING DEVICE has run 40 hours.
3) in closed chamber, carbon dioxide is filled with
Air inlet pipeline is connected on carbon dioxide air source, stops inflation when carbon dioxide detector records when gas concentration lwevel is 3% in sealing tent.
4) desinsection is sealed
Keep gas concentration described in this embodiment to open closed chamber after 7 days, adding up the tobacco-plant pest-insect death rate in each smoke box is 100%.
All the other are in the same manner as in Example 1.
By the above detailed description to the embodiment of the present invention, the difficult situation that the invention solves tobacco leaf insect pest and be difficult to thoroughly remove rapidly can be understood, and solve the problem of the inadequate environmental protection of tobacco leaf disinsection method in the past.
Be understandable that, the illustrative embodiments that above embodiment is only used to principle of the present invention is described and adopts, but the present invention is not limited thereto.For those skilled in the art, without departing from the spirit and substance in the present invention, can make various modification and improvement, these modification and improvement are also considered as protection scope of the present invention.
Claims (5)
1. a tobacco leaf rapid oxygen reduction disinsection method, it is characterized in that first adopting THE PRESSURE SWING ADSORPTION NITROGEN GENERATING DEVICE in the seal cavity depositing tobacco leaf stack by being filled with nitrogen and making the gaseous mixture pumpback of discharging in seal cavity circulate to make oxygen concentration in seal cavity drop to 5% in 6-48 hour in the adsorption tanks of THE PRESSURE SWING ADSORPTION NITROGEN GENERATING DEVICE, in seal cavity, be filled with gas concentration lwevel in carbon dioxide to seal cavity is again 3-50%, makes oxygen concentration in tobacco leaf stack be down to less than 2% fast;
The method comprises following concrete steps:
1) adopt seal cavity by tobacco leaf stack sealing
The seal cavity of tobacco leaf stack is furnished with air inlet, exhaust outlet and gas concentration detector, and air inlet and exhaust outlet are by pipeline and valve and ft connection or sealing;
2) in seal cavity, be filled with nitrogen by air inlet, by the air in exhaust outlet discharge seal cavity or gaseous mixture, make oxygen concentration in seal cavity be down to 5%,
First U-tube differential manometer is used to carry out negative pressure test to this tobacco leaf stack, to detect the sealing effectiveness in sealing space;
Then pipeline is adopted seal cavity air inlet to be connected to the inflation inlet of THE PRESSURE SWING ADSORPTION NITROGEN GENERATING DEVICE, seal cavity exhaust outlet is connected on the bleeding point of THE PRESSURE SWING ADSORPTION NITROGEN GENERATING DEVICE, form closed circuit, open THE PRESSURE SWING ADSORPTION NITROGEN GENERATING DEVICE, the made nitrogen of THE PRESSURE SWING ADSORPTION NITROGEN GENERATING DEVICE is filled with the seal cavity of tobacco leaf stack, air in seal cavity or to THE PRESSURE SWING ADSORPTION NITROGEN GENERATING DEVICE, further separated oxygen in the adsorption tanks of carbon molecular sieve is housed by the bleeding point pumpback of THE PRESSURE SWING ADSORPTION NITROGEN GENERATING DEVICE again with the mist of nitrogen, the concentration of made nitrogen is increased further, make to get back in seal cavity nitrogen gas concn in the circulating air of THE PRESSURE SWING ADSORPTION NITROGEN GENERATING DEVICE bleeding point gradually to increase, THE PRESSURE SWING ADSORPTION NITROGEN GENERATING DEVICE and seal cavity air inlet and exhaust outlet valve is closed when oxygen concentration in seal cavity is down to 5%,
3) in seal cavity, carbon dioxide is filled with
Seal cavity air inlet is connected on carbon dioxide air source, exhaust outlet connects air exhauster, open air inlet valve and be filled with carbon dioxide, and open exhaust outlet valve opening air exhauster, when gas concentration lwevel in seal cavity is 3-50% stop inflate and close air inlet valve and exhaust outlet valve, now in seal cavity oxygen concentration below 2%;
4), under normal temperature, step 3 is kept) described gas concentration 2-10 days.
2. tobacco leaf rapid oxygen reduction disinsection method according to claim 1, is characterized in that described seal cavity adopts closed chamber or sealing tent.
3. tobacco leaf rapid oxygen reduction disinsection method according to claim 2, is characterized in that described sealing tent adopts oxygen transmission rate to be less than 100mL/daym
2plastic sheeting preparation.
4. tobacco leaf rapid oxygen reduction disinsection method according to claim 1, is characterized in that described variable-pressure adsorption equipment produces nitrogen amount at 20m
3/ more than h, nitrogen gas purity is more than 90%.
5. tobacco leaf rapid oxygen reduction disinsection method according to claim 1, is characterized in that described carbon dioxide air source purity is more than 95%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110204134.1A CN102871208B (en) | 2011-07-15 | 2011-07-15 | A kind of tobacco leaf rapid oxygen reduction disinsection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110204134.1A CN102871208B (en) | 2011-07-15 | 2011-07-15 | A kind of tobacco leaf rapid oxygen reduction disinsection method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102871208A CN102871208A (en) | 2013-01-16 |
| CN102871208B true CN102871208B (en) | 2016-02-10 |
Family
ID=47472922
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110204134.1A Active CN102871208B (en) | 2011-07-15 | 2011-07-15 | A kind of tobacco leaf rapid oxygen reduction disinsection method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102871208B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103843751B (en) * | 2014-02-28 | 2016-04-13 | 中华全国供销合作总社昆明食用菌研究所 | A kind of edible mushroom insect-repelling method |
| CN104824829B (en) * | 2015-03-31 | 2016-04-06 | 川渝中烟工业有限责任公司 | The pretreated method of the tobacco leaf that goes mouldy |
| CN109549247B (en) * | 2018-12-20 | 2022-04-22 | 武汉东昌仓贮技术有限公司 | Method for removing mildew from tobacco leaves mildewed in alcoholization period |
| CN109549248B (en) * | 2018-12-20 | 2021-09-07 | 武汉东昌仓贮技术有限公司 | Alcoholization mature mildew tobacco leaf mold removal treatment method |
| CN111184250B (en) * | 2020-03-05 | 2024-11-29 | 北京盈丰利泰科贸有限公司 | Slice flue gas storage regulating method convenient for later oxygen regulation |
| CN111268288A (en) * | 2020-03-26 | 2020-06-12 | 安徽中烟工业有限责任公司 | A freezing insecticidal method for hand-rolled cigars |
| CN112716021B (en) * | 2020-12-25 | 2022-10-11 | 北京盈丰利泰科贸有限公司 | Tobacco lamina warehousing system based on preprocessing technology and working method thereof |
| CN114642197A (en) * | 2022-04-01 | 2022-06-21 | 湖北中烟工业有限责任公司 | A mechanical modified atmosphere insecticidal system for storing tobacco leaves in a cave and its construction and use methods |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB999467A (en) * | 1962-07-02 | 1965-07-28 | Whirlpool Co | Improvements in the storage of perishable animal and vegetable materials and apparatus therefor |
| CN1118759A (en) * | 1994-06-15 | 1996-03-20 | 运载器有限公司 | Controlled atmosphere system for a refrigerated container |
| RU2166888C1 (en) * | 1999-10-18 | 2001-05-20 | Всероссийский научно-исследовательский институт консервной и овощесушильной промышленности | Method for preparing tobacco leaves for storage |
| RU2228682C1 (en) * | 2002-10-17 | 2004-05-20 | Всероссийский научно-исследовательский институт биологической защиты растений | Method of preparing tobacco for storage |
| CN101584280A (en) * | 2009-06-17 | 2009-11-25 | 李翊玮 | The multifunctional tobacco leaf stack sealing storage method of adjustable storage environment |
| CN101849465A (en) * | 2010-05-18 | 2010-10-06 | 王春录 | Air-conditioning storage method |
| CN201626832U (en) * | 2010-01-04 | 2010-11-10 | 湖南华望熏蒸消毒有限公司 | A membrane separation nitrogen production equipment with circulation and temperature control functions for the tobacco leaf sealed bin |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06113807A (en) * | 1992-10-09 | 1994-04-26 | Japan Tobacco Inc | Sheet for storing dried leaf tobacco |
| JP3922985B2 (en) * | 2002-08-22 | 2007-05-30 | 日本たばこ産業株式会社 | Drying method of air-dried seed tobacco |
-
2011
- 2011-07-15 CN CN201110204134.1A patent/CN102871208B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB999467A (en) * | 1962-07-02 | 1965-07-28 | Whirlpool Co | Improvements in the storage of perishable animal and vegetable materials and apparatus therefor |
| CN1118759A (en) * | 1994-06-15 | 1996-03-20 | 运载器有限公司 | Controlled atmosphere system for a refrigerated container |
| RU2166888C1 (en) * | 1999-10-18 | 2001-05-20 | Всероссийский научно-исследовательский институт консервной и овощесушильной промышленности | Method for preparing tobacco leaves for storage |
| RU2228682C1 (en) * | 2002-10-17 | 2004-05-20 | Всероссийский научно-исследовательский институт биологической защиты растений | Method of preparing tobacco for storage |
| CN101584280A (en) * | 2009-06-17 | 2009-11-25 | 李翊玮 | The multifunctional tobacco leaf stack sealing storage method of adjustable storage environment |
| CN201626832U (en) * | 2010-01-04 | 2010-11-10 | 湖南华望熏蒸消毒有限公司 | A membrane separation nitrogen production equipment with circulation and temperature control functions for the tobacco leaf sealed bin |
| CN101849465A (en) * | 2010-05-18 | 2010-10-06 | 王春录 | Air-conditioning storage method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102871208A (en) | 2013-01-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102871208B (en) | A kind of tobacco leaf rapid oxygen reduction disinsection method | |
| CN103404957B (en) | Gas composition and environmental factor controllable tobacco sealing, storage and maintenance method | |
| CN209192604U (en) | Packaging bag fresh-keeping exhaust valve structure | |
| CN102871215B (en) | A kind of method killing tobacco-plant pest-insect | |
| CN111846626B (en) | Agricultural product packaging and stacking airtight storage method in mechanical air-conditioning mode | |
| JP2004535817A5 (en) | ||
| WO2018227944A1 (en) | 1-methylcyclopropene composition, fruit, vegetable, and flower fresh-keeping card, preparation methods therefor, and applications thereof | |
| US20130189409A1 (en) | Systems and methods for maintaining perishable foods | |
| CN102599228A (en) | High-oxygen modified atmosphere fresh-kept cooked poultry meat and preparation method thereof | |
| CN112142016B (en) | Rapid mechanical deoxidization and nitrogen filling method in closed circulation mode | |
| CN102871207B (en) | The quick disinsection method of a kind of tobacco leaf | |
| CN102871198A (en) | Method for reducing oxygen to kill pests of stored goods | |
| CN104429412B (en) | The grain depot method of sterilization and disinfestation device and sterilization and disinfestation | |
| CN103081987A (en) | A fresh-keeping method for kiwi fruit using high-concentration CO2 modified atmosphere packaging | |
| CN102422880A (en) | Slow-release preservative for fruits and vegetables and preparation method thereof | |
| CN102871218A (en) | Method of oxygen reduction, dehumidification and mold prevention during tobacco storage | |
| CN102096732B (en) | Fruit and vegetable respiration rate modeling method | |
| JPS6094056A (en) | Bag for preserving broccoli sprouts | |
| CN104872267A (en) | Controlled atmosphere packaging fresh-keeping agent for box-packed meat cuts | |
| CN208264978U (en) | A kind of gas regulation packing box of cherry | |
| CN201737408U (en) | Safe controlled-atmosphere storage structure | |
| CN201512181U (en) | Ventilating window for packing materials | |
| CN204362850U (en) | Grain depot sterilization and disinfestation device | |
| CN205794702U (en) | A kind of combined type damping preserving fruit and vegetable utilizing pad | |
| CN109384946A (en) | Fresh-keeping packaging bag, preparation method and its application |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: No. 688 Wangcheng Avenue, Wangcheng Economic Development Zone, Changsha City, Hunan Province, 410200 Patentee after: Hunan Huawang Biotechnology Co.,Ltd. Country or region after: China Address before: Room 1-201, Chengyu Building, No. 523 Laodong Middle Road, Changsha City, Hunan Province, 410007 Patentee before: HUNAN HUAWANG FUMIGATION TECHNOLOGY CO.,LTD. Country or region before: China |
|
| CP03 | Change of name, title or address | ||
| DD01 | Delivery of document by public notice |
Addressee: Cao Hua Document name: Notice of Qualified Procedures |
|
| DD01 | Delivery of document by public notice |