CN102895833A - Device for treating flue gases during production process of dry-ice expanded cut tobacco - Google Patents
Device for treating flue gases during production process of dry-ice expanded cut tobacco Download PDFInfo
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- CN102895833A CN102895833A CN2012103645165A CN201210364516A CN102895833A CN 102895833 A CN102895833 A CN 102895833A CN 2012103645165 A CN2012103645165 A CN 2012103645165A CN 201210364516 A CN201210364516 A CN 201210364516A CN 102895833 A CN102895833 A CN 102895833A
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Abstract
The invention discloses a device for treating flue gases during the production process of dry-ice expanded cut tobacco. The device comprises a gas inlet pipe, a gas inlet fan, an expansion tower, a vibration feeder, an electric heating furnace and a dedusting treatment device, wherein the gas inlet pipe provides gases for heating the cut tobacco, the gas inlet fan accelerates flowing of the gases, the expansion tower enables the gases and the cut tobacco mixed with dry ice to react, the vibration feeder provides the cut tobacco for the expansion tower, the electric heating furnace heats the gases, the dedusting treatment device treats the reacted flue gases, and the gas inlet pipe, the gas inlet fan, the electric heating furnace, the expansion tower, the vibration feeder and the dedusting treatment device are sequentially connected with one another. According to the device, the electric heating furnace is used for replacing existing combustion furnaces so that dust of the electric heating furnace and dust mixed with water vapor are reduced; temperatures at each position in the furnace are constant so that the phenomenon of overhigh temperatures can not happen, the service life of materials in the electric heating furnace is prolonged, heat efficiencies are improved, and heat discharge amount is reduced; and according to the flue gas treatment device, by means of a technological flue gas treating portion, concentration of each organic matter is reduced, and the discharged flue gases reach national environmental protection standards.
Description
Technical field
The present invention relates to the tobacco processing industry, be specifically related to the flue gas processing device on a kind of dry-ice expanding tobacco shred production line.
Background technology
With dry ice (CO
2) expanded cut tobacco is the technology that last century, the seventies grew up latter stage in the world, to late nineteen eighties and the early 1990s, this technology is used in many developed countries.At present, domestic tobacco machine industry has had the complete skill data of U.S. BOC pattern and two kinds of dry-ice expanding tobacco shred production lines of Britain BAT pattern, and finishes smoothly the production domesticization work of this technology and equipment.The heating of dry-ice expanding pipe tobacco core and fume treatment auxiliary all are the working methods that adopt combustion furnace in the above-mentioned production line, belong to the two-in-one pattern of tubular heater and incinerator.Its flow process is: tobacco material (contains 20% moisture) behind section, moisture regain, storage, chopping, quantitative weighing pipe tobacco, periodically send into infuser, after the dry ice pipe tobacco after the infuser processing is broken up by loosening device, fall into the vibration cabinet, by the vibration of vibration cabinet the dry ice pipe tobacco is evenly sent into sublimator through metering band and feeding air lock.Dry ice pipe tobacco and 350C ° of left and right sides process gas (steam, carbon dioxide, air) are when contacting in sublimator, the drikold that immerses in the pipe tobacco cell expands rapidly the pipe tobacco volume, pipe tobacco separates with process gas by tangential separator after expanding, process gas is extracted out by the technique blower fan after dedusting, major part is sent into the combustion furnace Heating Cyclic and is used, and a small amount of combustion furnace of sending into incinerates.Entered the cooling jigging conveyer by the isolated expanded cut tobacco of tangential separator by the discharging air lock, again behind the continuous radiating and cooling of supercooling belt conveyor, enter after the moisture regain of drum-type cut tobacco damping machine adds water, obtain the finished product expanded cut tobacco, its moisture content is 13%.
The combustion furnace that is applicable to each pattern has three kinds of patterns, and each pattern is neither identical, and the combustion furnace of U.S. BOC pattern and Britain BAT pattern partly is comprised of burner, body of heater, smoke-gas preheater, process gas heater etc.And the combustion furnace of online water swelling cut tobacco line is comprised of burner, body of heater, process gas heater etc.But all there is the low shortcoming of heat exchange efficiency in above-mentioned combustion furnace, simultaneously, after adopting combustion furnace, operating temperature is high in the burner hearth, causes short phenomenon of body of heater inside thermal conservation material life-span, and then affect heat insulation effect, and the easy dust stratification of heat exchange pipe, artificial deashing difficulty, the maintenance of heat exchange pipe group is large, after long-time the use, set of heat exchange tubes also can deform, distortion, ablation phenomen; The problems such as combustion furnace also exists floor space large in addition, and smog discharge temperature is high, and discharge capacity is large, and heat utilization rate is low.
Summary of the invention
For the combustion furnace that solves dry-ice expanding pipe tobacco process using in the prior art exists that heat exchange efficiency is low, short labor intensive in the service life problems such as many, the invention provides a kind of heater that adopts electrically heated dry-ice expanding tobacco shred production line.Concrete scheme is as follows: the flue gas processing device in a kind of dry-ice expanding pipe tobacco production process, comprise air inlet pipe that pipe tobacco heating desired gas is provided, accelerate ventilating fan, the gas of gas flow and mix expanding tower that the pipe tobacco of dry ice reacts, for expanding tower provide pipe tobacco oscillating feeder, it is characterized in that, also comprise the electric furnace that gas is heated, the dedusting treater of processing reacting rear flue gas, wherein air inlet pipe, ventilating fan, electric furnace, expanding tower, oscillating feeder, dedusting treater connect successively.
For removing smoke to the pollution of atmosphere: described dedusting treater comprise successively impurity in the removal flue gas that connects deduster, remove the overweight machine of steam in the flue gas, further remove the demister of moisture in the flue gas, flue gas carried out plasma deduster and the smoke discharge pipe of oxidative degradation.
For accelerating the flue gas processing speed: be provided with the flue gas blower fan of accelerating flow of flue gas between described demister and the plasma deduster.
For isolating flue gas in the expanding tower: described expanding tower is connected with the tangential separator of tobacco shred and the rear high-temperature flue gas of reaction, described tangential separator is transported to cyclone dust collectors with isolated flue gas by the high-temperature flue gas pipe, and cyclone dust collectors carry out being transported to dedusting treater behind the rough dusting to flue gas again.
Be the dust in the preliminary treatment flue gas: described ventilating fan is connected with cyclone dust collectors and the flue gas behind the rough dusting is delivered to dedusting treater.
For improving treatment effeciency: the normal temperature flue gas that oscillating feeder produces is transported in the cyclone dust collectors by tangential separator.
Among the present invention gas-heated is partly replaced existing combustion furnace with the air duct type electric furnace, using clean energy resource---electric energy replaces the non-renewable resources such as fuel oil or combustion gas, response country reduces the requirement of depletion of non-renewable resources by every possible means, electric furnace is without the burning material simultaneously, reduce self and sneaked into dust in the water vapour, and temperature constant everywhere in the stove, too high phenomenon can not appear, service life and the thermal efficiency of material in the electric furnace have been improved, reduced the heat discharge capacity, energy-saving effect is remarkable; Adopt the temperature control system temperature control, improve process gas temperature control accuracy and response speed.Technique flue gas processing section reduces various organic concentration in the flue gas among the present invention, and emptying flue gas reaches national environmental standard, and tasteless on the flue gas sense organ.This system's floor space reduces, and operation is simplified, and is simple to operate, easy to maintenance, and maintenance cost reduces.
Description of drawings
Fig. 1 structural representation of the present invention.
Attached number in the figure explanation: the reactor of disembarking, 901-flue gas exhaust pipe, 10-tangential separator, 11-cyclone dust collectors, the 12-high-temperature flue gas pipes such as 1-expanding tower, 2-oscillating feeder, 3-ventilating fan, 301-air inlet pipe, 4-electric furnace, 5-deduster, the overweight machine of 6-, 7-demister, 8-flue gas blower fan, 9-.
The specific embodiment
Below in conjunction with accompanying drawing the solution of the present invention is described further.
As shown in Figure 1, production line of the present invention comprises the air inlet pipe 301 that pipe tobacco heating desired gas is provided, accelerate the ventilating fan 3 of gas flow, the electric furnace 4 that gas is heated, the expanding tower 1 that gas and the pipe tobacco that mixes dry ice react, the oscillating feeder 2 of pipe tobacco is provided for expanding tower, the dedusting treater of processing reacting rear flue gas, wherein air inlet pipe 301, ventilating fan 3, electric furnace 4, expanding tower 1, dedusting treater connects successively, oscillating feeder 2 is connected with expanding tower 1, expanding tower 1 is connected with tangential separator 10, the normal temperature flue gas that the high-temperature flue gas that tangential separator 10 produces after with tobacco separating reaction in the expanding tower 1 by high-temperature flue gas pipe 12 and oscillating feeder 2 produce is discharged in the cyclone dust collectors 11, cyclone dust collectors 11 are connected with dedusting treater again, for accelerating flow of flue gas speed, ventilating fan 3 is connected with cyclone dust collectors 11 by pipeline, so that the flue gas behind the rough dusting is blown to dedusting treater.
This programme is when work; The steam that provides for tobacco expanding enters from air inlet pipe 301, after the acceleration of ventilating fan 3, deliver to electric furnace 4, electric furnace 4 is provided with temperature acquisition, the control system that control and power stage are regulated, outlet temperature can reach setting value when the heating of 4 pairs of water vapours of electric heater can be guaranteed water vapour by electric furnace 4, electric furnace 4 can be in the allowable temperature scope constant temperature an any given setting value, and electric furnace 4 is without the burning material, reduce self and sneaked into dust in the water vapour, temperature constant everywhere in this meal stove, local too high phenomenon can not occur, can improve the service life of electric furnace 4 interior materials.The water vapour that is heated to assigned temperature is fed in the expanding tower 1, expanding tower 1 receives the pipe tobacco of being sent into by oscillating feeder 2, after separating, 10 pairs of pipe tobaccos of tangential separator send in the expanding tower, hot gas 1 carries out heat exchange with the pipe tobacco that has mixed dry ice in expanding tower, then through the normal temperature flue gas of tangential separator 10 with expanding tower 1 isolated high-temperature flue gas and oscillating feeder 2 generations, deliver in the cyclone dust collectors 11 so that most of flue dust is separated by high-temperature flue gas pipe 12, the part small dust after the dedusting is incorporated into flue gas processing device with high temperature gas flow by ventilating fan.
As shown in Figure 1, dedusting treater of the present invention comprise successively impurity in the removal flue gas that connects deduster 5, remove the overweight machine 6 of steam in the flue gas, further remove the demister 7 of moisture, flue gas carried out plasma deduster 9 and the smoke discharge pipe 901 of oxidative degradation, between demister 7 and plasma deduster 9, be provided with the flue gas blower fan 8 of accelerating flow of flue gas.
Functions in the dedusting treater is as follows: deduster can adopt existing gravitational precipitator, inertial dust separator, centrifugal deduster, water-bath type dust cleaner, sack cleaner, electrostatic precipitator or magnetic dust collector etc., the dust in the flue gas is done initial gross separation;
Cyclone dust collectors generally are comprised of air inlet pipe, blast pipe, cylinder, cone and ash bucket, it is simple in structure, is easy to manufacturing, installation and maintenance management, and equipment investment and operating cost are all lower, be widely used for separating solids and liquid particle from air-flow, or from liquid separating solid particles.Under normal operational conditions, act on centrifugal force on the particle and be 5～2500 times of gravity, it is applicable to the removal of non-stickiness and non-fiber dust, and mostly with removing the above particle of 5 μ m, multicyclone device in parallel also has 80～85% efficiency of dust collection to the particle of 3 μ m.Select the specialty metal of high temperature resistant, erosion resistant and corrosion or the cyclone dust collectors of ceramic material structure, can be in temperature up to 1000 ℃, pressure reaches under the condition of 500 * 105Pa and operates, and it can alleviate the processing intensity of condensed material in the dedusting treater back segment temperature-fall period;
Overweight machine is the plant equipment that can produce super gravity field, super gravity field is wherein produced by rotation, it is a kind of technology of utilizing centrifugal force to strengthen transmission and mixed process, the super gravity field that overweight machine produces is stable and adjustable, replace gravity with centrifugal force and strengthen mass transport process, so that volume transmission quality coefficient can increase to decades of times even the hundreds of times of common fillers tower, liquid is under the hypergravity force field, owing to being subject to the effect of significant shear power, the surface is upgraded rapidly, produce huge alternate contact area, utilize the dust that highly enriched mass transport process and micro mixing contain in flue gas in the space of less to dissolve in the water, to flue gas cool-down, after water-soluble organic matter was dissolved in the water in the flue gas, the fume emission that will process again carried out moisture to demister and gets rid of simultaneously;
Demister is mainly by silk screen, the silk screen piece that the silk screen grid forms and fixedly the supporting arrangement of silk screen piece consist of, silk screen is the gas-liquid filter net of various materials, mainly formed by wire or nonmetal wire, nonmetal wire is formed by multiply non-metallic fibers twisting, also can be the sub-thread nonmetal wire, demister not only can filtering be suspended in the larger liquid foam in the air-flow, and the energy filtering is less and minute liquid foam, when the gas with mist rises by silk screen with certain speed, because the effect of inertia that mist rises, mist and silk screen filament collide and are attached on the silk screen surface, along with concentrating of mist on the silk screen surface, the larger drop of the final formation of mist flow to the interface point of two rhizoids along silk screen, because the wettability of silk screen, the surface tension of liquid and the capillarity of silk screen, so that drop is increasing, until the drop of assembling is when arrive greatly making a concerted effort of climbing power that the gravity that himself produces surpasses gas and surface tension of liquid, drop is just from silk screen separation whereabouts.Gas is substantially free of mist by behind the demister.Therefore through behind the mist in the demister divided gas flow, can reduce equipment corrosion, extension device service life increase treating capacity and reclaim valuable material, but and protection of the environment, reduce atmosphere pollution;
The Main Function of plasma reactor is that flue gas is carried out oxidation processes, makes water-fast organic matter and fully not water-soluble organic matter generation carbon dioxide and the water of residue in the flue gas, finally reaches the purpose of substantially tasteless discharging.
As shown in Figure 1, the specific works step of dedusting treater is: the normal temperature flue gas from the groove that shakes in the oscillating feeder carries out dedusting through normal temperature fume pipe and the high-temperature flue gas of introducing from ventilating fan in deduster, gas after the dedusting mixes with middle water through in the overweight machine, owing to containing a large amount of steam in the flue gas, after the high efficiency mass transfer cooling of overweight machine, the most of condensation liquefy of steam water, tolerance reduces 70 ~ 80%, water-soluble organic matters such as the tar in the flue gas can be discharged with middle water, dewater through demister through the flue gas behind the overweight machine, water-soluble organic matter major part is discharged with water, a small amount of smell substance in the flue gas is introduced plasma reactor with flue gas by the flue gas blower fan, process through oxidative degradation, finally generate behind carbon dioxide and the water emptying.
The above only is preferred embodiment of the present invention, be not that the present invention is done any pro forma restriction, although the present invention discloses as above with preferred embodiment, yet be not to limit the present invention, anyly be familiar with the technical staff of this patent within not breaking away from the technical solution of the present invention scope, when the technology contents that can utilize above-mentioned prompting is made a little change or is modified to the equivalent embodiment of equivalent variations, in every case be the content that does not break away from technical solution of the present invention, any simple modification that foundation technical spirit of the present invention is done above embodiment, equivalent variations and modification all still belong in the present invention program's the scope.
Claims (6)
1. the flue gas processing device in the dry-ice expanding pipe tobacco production process, comprise the air inlet pipe (301) that pipe tobacco heating desired gas is provided, accelerate the ventilating fan (3) of gas flow, the expanding tower (1) that gas and the pipe tobacco that mixes dry ice react, the oscillating feeder (2) of pipe tobacco is provided for expanding tower (1), it is characterized in that, also comprise the electric furnace (4) that gas is heated, the dedusting treater of processing reacting rear flue gas, wherein air inlet pipe (301), ventilating fan (3), electric furnace (4), expanding tower (1), oscillating feeder (2), dedusting treater connects successively.
2. flue gas processing device as claimed in claim 1, it is characterized in that, described dedusting treater comprise successively impurity in the removal flue gas that connects deduster (5), remove the overweight machine (6) of steam in the flue gas, further remove the demister (7) of moisture in the flue gas, flue gas carried out plasma deduster (9) and the smoke discharge pipe (901) of oxidative degradation.
3. flue gas processing device as claimed in claim 2 is characterized in that, is provided with the flue gas blower fan (8) of accelerating flow of flue gas between described demister (7) and the plasma deduster (9).
4. flue gas processing device as claimed in claim 1, it is characterized in that, described expanding tower (1) is connected with the tangential separator (10) of tobacco shred and the rear high-temperature flue gas of reaction, described tangential separator (10) is transported to cyclone dust collectors (11) with isolated flue gas by high-temperature flue gas pipe (12), and cyclone dust collectors (11) carry out being transported to dedusting treater behind the rough dusting to flue gas again.
5. flue gas processing device as claimed in claim 4 is characterized in that, described ventilating fan (3) is connected with cyclone dust collectors (11) and the flue gas behind the rough dusting is delivered to dedusting treater.
6. flue gas processing device as claimed in claim 4 is characterized in that, the normal temperature flue gas that oscillating feeder (2) produces is transported in the cyclone dust collectors (11) by tangential separator (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210364516.5A CN102895833B (en) | 2012-09-26 | 2012-09-26 | Device for treating flue gases during production process of dry-ice expanded cut tobacco |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210364516.5A CN102895833B (en) | 2012-09-26 | 2012-09-26 | Device for treating flue gases during production process of dry-ice expanded cut tobacco |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102895833A true CN102895833A (en) | 2013-01-30 |
| CN102895833B CN102895833B (en) | 2014-08-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210364516.5A Expired - Fee Related CN102895833B (en) | 2012-09-26 | 2012-09-26 | Device for treating flue gases during production process of dry-ice expanded cut tobacco |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0015660A1 (en) * | 1979-02-16 | 1980-09-17 | The BOC Group, Inc. | Method and apparatus for expanding tobacco |
| EP0743829B1 (en) * | 1994-02-09 | 1999-12-08 | Messer Uk Limited | Dry ice expanded tobacco |
| CN1426708A (en) * | 2001-12-21 | 2003-07-02 | 黄嘉礽 | Tobacco thred expansion method and equipment |
| CN2579180Y (en) * | 2002-09-18 | 2003-10-15 | 北京达特烟草成套设备技术开发有限责任公司 | Dry ice expansion tobacco device |
| CN201081399Y (en) * | 2007-08-30 | 2008-07-02 | 北京达特烟草成套设备技术开发有限责任公司 | Electric heating stove for dry ice expanded tobacco shred production line |
-
2012
- 2012-09-26 CN CN201210364516.5A patent/CN102895833B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0015660A1 (en) * | 1979-02-16 | 1980-09-17 | The BOC Group, Inc. | Method and apparatus for expanding tobacco |
| EP0743829B1 (en) * | 1994-02-09 | 1999-12-08 | Messer Uk Limited | Dry ice expanded tobacco |
| CN1426708A (en) * | 2001-12-21 | 2003-07-02 | 黄嘉礽 | Tobacco thred expansion method and equipment |
| CN2579180Y (en) * | 2002-09-18 | 2003-10-15 | 北京达特烟草成套设备技术开发有限责任公司 | Dry ice expansion tobacco device |
| CN201081399Y (en) * | 2007-08-30 | 2008-07-02 | 北京达特烟草成套设备技术开发有限责任公司 | Electric heating stove for dry ice expanded tobacco shred production line |
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| Publication number | Publication date |
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| CN102895833B (en) | 2014-08-27 |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C53 | Correction of patent of invention or patent application | ||
| CB02 | Change of applicant information |
Address after: 100176 Beijing City, Daxing District economic and Technological Development Zone North Sheng 25 Building No. Applicant after: Beijing Date Integrated Technology Co., Ltd. Applicant after: Shanghai Tobacco Group Co., Ltd. Address before: 100176 Beijing City, Daxing District economic and Technological Development Zone North Sheng 25 Building No. Applicant before: Beijing Date Tobacco Complete Equipment Technological Development Co., Ltd. Applicant before: Shanghai Tobacco Group Co., Ltd. |
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| COR | Change of bibliographic data |
Free format text: CORRECT: APPLICANT; FROM: BEIJING DATE TOBACCO COMPLETE EQUIPMENT TECHNOLOGICAL DEVELOPMENT CO., LTD. TO: BEIJING DIET ENGINEERING CO., LTD. |
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| C14 | Grant of patent or utility model | ||
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140827 Termination date: 20180926 |