CN102895833B - 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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- CN102895833B CN102895833B CN201210364516.5A CN201210364516A CN102895833B CN 102895833 B CN102895833 B CN 102895833B CN 201210364516 A CN201210364516 A CN 201210364516A CN 102895833 B CN102895833 B CN 102895833B
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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 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 (CO2) expanded cut tobacco be 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 completes smoothly the production domesticization work of this technology and equipment.In above-mentioned production line, the heating of dry-ice expanding pipe tobacco core and fume treatment auxiliary are all the working methods that adopt combustion furnace, belong to the two-in-one pattern of tubular heater and incinerator.Its flow process is: tobacco material is (containing 20% moisture) after section, moisture regain, storage, chopping, quantitative weighing pipe tobacco, periodically send into infuser, after dry ice pipe tobacco after infuser processing is broken up by loosening device, fall into vibration cabinet, by the vibration of vibration cabinet, dry ice pipe tobacco is evenly sent into sublimator through metering band and feeding air lock.When in sublimator, dry ice pipe tobacco contacts with 350C ° of left and right process gas (steam, carbon dioxide, air), the drikold immersing in pipe tobacco cell expands rapidly pipe tobacco volume, after expanding, pipe tobacco separates with process gas by tangential separator, process gas is extracted out by technique blower fan after dedusting, major part is sent into combustion furnace Heating Cyclic and is used, and a small amount of combustion furnace of sending into incinerates.Entered cooling jigging conveyer by the isolated expanded cut tobacco of tangential separator by discharging air lock, then after the continuous radiating and cooling of supercooling belt conveyor, enter after the moisture regain of drum-type cut tobacco damping machine adds water, obtain 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 is made up of parts such as burner, body of heater, smoke-gas preheater, process gas heaters.And the combustion furnace of online water swelling cut tobacco line is made up of burner, body of heater, process gas heater etc.But all there is the shortcoming that heat exchange efficiency is low in above-mentioned combustion furnace, simultaneously, adopt after combustion furnace, in burner hearth, operating temperature is high, 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 use, set of heat exchange tubes also can deform, distortion, ablation phenomen; In addition also there is the problems such as floor space is large, and smog discharge temperature is high, and discharge capacity is large, and heat utilization rate is low in combustion furnace.
Summary of the invention
Have for solving in prior art the combustion furnace of dry-ice expanding pipe tobacco process using 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 the air inlet pipe of 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.
Pollution for removing smoke to atmosphere: described dedusting treater comprise successively impurity in the removal flue gas connecting deduster, remove steam in flue gas overweight machine, further remove the demister of moisture in flue gas, flue gas carried out to plasma deduster and the smoke discharge pipe of oxidative degradation.
For accelerating flue gas processing speed: be provided with the flue gas blower fan of accelerating flow of flue gas between described demister and plasma deduster.
For isolating flue gas in 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 by isolated flue gas by high-temperature flue gas pipe, and cyclone dust collectors carry out being transported to dedusting treater after rough dusting to flue gas again.
Dust in preliminary treatment flue gas: described ventilating fan is connected with cyclone dust collectors and the flue gas after rough dusting is delivered to dedusting treater.
For improving treatment effeciency: the normal temperature flue gas that oscillating feeder produces is transported in cyclone dust collectors by tangential separator.
In the present invention, gas-heated part is replaced to existing combustion furnace with 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 burning material simultaneously, reduce self and sneaked into the dust in water vapour, and temperature constant everywhere in stove, there will not be too high phenomenon, service life and the thermal efficiency of material in electric furnace are improved, reduced heat discharge capacity, energy-saving effect is remarkable; Adopt temperature control system temperature control, improve process gas temperature control accuracy and response speed.In the present invention, technique flue gas processing section reduces various organic concentration in flue gas, and emptying flue gas reaches national environmental standard, and tasteless on flue gas sense organ.This system floor space reduces, and operation is simplified, simple to operate, easy to maintenance, and maintenance cost reduces.
Brief description of the 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, 6-is overweight machine, 7-demister, 8-flue gas blower fan, 9-.
Detailed description of the invention
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 reacts with the pipe tobacco that mixes dry ice, for expanding tower provides the oscillating feeder 2 of pipe tobacco, 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 tangential separator 10 produces the high-temperature flue gas producing after tobacco separating reaction in expanding tower 1 and oscillating feeder 2 by high-temperature flue gas pipe 12 is discharged in 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 after rough dusting is blown to dedusting treater.
This programme is in the time of work, the steam providing 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 regulate, when electric heater 4 can be guaranteed water vapour by electric furnace 4 to the heating of water vapour, outlet temperature can reach setting value, electric furnace 4 can be within the scope of allowable temperature constant temperature an any given setting value, and electric furnace 4 is without burning material, reduce self and sneaked into the dust in water vapour, temperature constant everywhere in this meal stove, there will not be local too high phenomenon, can improve the service life of electric furnace 4 interior materials.The water vapour that is heated to assigned temperature is fed in expanding tower 1, expanding tower 1 receives the pipe tobacco of being sent into by oscillating feeder 2, entered in expanding tower by the pipe tobacco after tangential separator separating flue, hot gas 1 carries out heat exchange with the pipe tobacco that has mixed dry ice in expanding tower, then the normal temperature flue gas through tangential separator 10, isolated expanding tower 1 high-temperature flue gas and oscillating feeder 2 being produced, deliver in cyclone dust collectors 11 so that most of flue dust is separated by high-temperature flue gas pipe 12, part small dust after 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 connecting deduster 5, remove steam in flue gas overweight machine 6, further remove the demister 7 of moisture, flue gas carried out to 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 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 flue gas is done to initial gross separation;
Cyclone dust collectors are generally made up of air inlet pipe, blast pipe, cylinder, cone and ash bucket, it is simple in structure, is easy to manufacture, 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 particle and be 5～2500 times of gravity, it is applicable to the removal of non-stickiness and non-fiber dust, and with the particle removing more than 5 μ m, multicyclone device in parallel also has 80～85% efficiency of dust collection to the particle of 3 μ m mostly.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 DEG C, pressure reaches under the condition of 500 × 105Pa and operates, and it can alleviate the processing intensity of condensed material in dedusting treater back segment temperature-fall period;
Overweight machine is the plant equipment that can produce super gravity field, super gravity field is wherein by rotating generation, it is a kind of technology of utilizing centrifugal force strengthening 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, make volume transmission quality coefficient can increase to the even hundreds of times of decades of times of common fillers tower, liquid is under hypergravity force field, owing to being subject to the effect of significant shear power, surface is upgraded rapidly, produce huge alternate contact area, utilize highly enriched mass transport process and micro mixing in relatively little space, the dust containing in flue gas to be dissolved in water, simultaneously to flue gas cool-down, after in flue gas, water-soluble organic matter is dissolved in the water, again the fume emission of processing is carried out to moisture eliminating to demister,
Demister is mainly by silk screen, the silk screen piece of silk screen grid composition and the supporting arrangement of fixing silk screen piece form, 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 sub-thread nonmetal wire, demister not only can filtering be suspended in the larger liquid foam in air-flow, and energy filtering is less and minute liquid foam, in the time that the gas with mist rises by silk screen with certain speed, due to the effect of inertia of mist rising, mist and silk screen filament collide and are attached on silk screen surface, along with concentrating of mist on silk screen surface, the larger drop of the final formation of mist flow to the interface point of two rhizoids along silk screen, due to the wettability of silk screen, the surface tension of liquid and the capillarity of silk screen, make drop increasing, until the gravity that the drop of assembling produces to himself greatly exceed the climbing power of gas and surface tension of liquid with joint efforts time, drop just separates from silk screen.Gas, by after demister, does not basically contain mist.Therefore after the mist in demister divided gas flow, can reduce equipment corrosion, extension device service life, increase treating capacity and reclaim valuable material, and can protection of the environment, atmosphere pollution reduced;
The Main Function of plasma reactor is that flue gas is carried out to oxidation processes, makes water-fast organic matter and completely not water-soluble organic matter generation carbon dioxide and the water of residue in flue gas, finally reaches the object of substantially tasteless discharge.
As shown in Figure 1, the specific works step of dedusting treater is: the normal temperature flue gas from the groove that shakes in 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 dedusting mixes with middle water through in overweight machine, owing to containing a large amount of steam in 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 flue gas can be discharged with middle water, flue gas after overweight machine is through demister dehydration, make so water-soluble organic matter major part discharge with water, a small amount of smell substance in flue gas is introduced plasma reactor with flue gas by flue gas blower fan, through oxidative degradation processing, emptying after final generation carbon dioxide and water.
The above is only preferred embodiment of the present invention, not the present invention is done to any pro forma restriction, although the present invention discloses as above with preferred embodiment, but not in order to limit the present invention, any technical staff who is familiar with this patent is not departing within the scope of technical solution of the present invention, when can utilizing the technology contents of above-mentioned prompting to make a little change or being modified to the equivalent embodiment of equivalent variations, in every case be the content that does not depart from technical solution of the present invention, any simple modification of above embodiment being done according to technical spirit of the present invention, equivalent variations and modification, all still belong in the present invention program's scope.
Claims (3)
1. the flue gas processing device in a 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 reacts with the pipe tobacco that mixes dry ice, for expanding tower (1) provides the oscillating feeder (2) of pipe tobacco, 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), tangential separator (10), cyclone dust collectors (11) and dedusting treater connect successively, 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) by isolated flue gas by high-temperature flue gas pipe (12), cyclone dust collectors (11) carry out being transported to dedusting treater after rough dusting to flue gas again, dedusting treater comprises the deduster (5) of impurity in the removal flue gas connecting successively, remove the overweight machine (6) of steam in flue gas, further remove the demister (7) of moisture in flue gas, flue gas is carried out to plasma deduster (9) and the smoke discharge pipe (901) of oxidative degradation, the normal temperature flue gas that oscillating feeder (2) produces is transported in cyclone dust collectors (11) by tangential separator (10).
2. flue gas processing device as claimed in claim 1, is characterized in that, is provided with the flue gas blower fan (8) of accelerating flow of flue gas between described demister (7) and plasma deduster (9).
3. flue gas processing device as claimed in claim 1, is characterized in that, described ventilating fan (3) is connected and the flue gas after rough dusting is delivered to dedusting treater with cyclone dust collectors (11).
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 |
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| Publication Number | Publication Date |
|---|---|
| CN102895833A CN102895833A (en) | 2013-01-30 |
| CN102895833B true 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 (4)
| 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 |
| 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 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
-
2012
- 2012-09-26 CN CN201210364516.5A patent/CN102895833B/en not_active Expired - Fee Related
Patent Citations (4)
| 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 |
| 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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| CN102895833A (en) | 2013-01-30 |
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| C53 | Correction of patent for 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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Granted publication date: 20140827 Termination date: 20180926 |