CN104474825B - Multitube high-temperature electromagnetic floating bed dust remover - Google Patents
Multitube high-temperature electromagnetic floating bed dust remover Download PDFInfo
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- CN104474825B CN104474825B CN201410722513.3A CN201410722513A CN104474825B CN 104474825 B CN104474825 B CN 104474825B CN 201410722513 A CN201410722513 A CN 201410722513A CN 104474825 B CN104474825 B CN 104474825B
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Abstract
A kind of multitube high-temperature electromagnetic of the present invention floating bed dust remover, its object is to provide one to be applicable to high temperature, high pressure, the deduster of flue gas ash removal under high corrosion occasion, deduster of the present invention comprises cleaner body, described cleaner body comprises, in, lower three sections of cylindrical shells, described middle cylinder inside is provided with multitube and floats bed, outside is provided with solenoid, described solenoid connects dc source, described multitube is floated in bed pipe and is filled with magnetic-particle, described lower cylinder sidewall is provided with air inlet, bottom is provided with media regeneration groove, automatic brake valve plate is provided with between described lower cylinder and described media regeneration groove, described media regeneration trench bottom is provided with useless slurry outlet, described media regeneration groove sidewall is connected with auger conveyor, the described auger conveyor other end is connected with mechanical lift bucket, described mechanical lift bucket is connected with granule distribution, described granule distribution is positioned at described top cylindrical shell, described top cylinder lateral wall is connected with gas outlet.
Description
Technical field
The present invention relates to energy-conserving and environment-protective field, particularly relate to a kind of multitube high-temperature electromagnetic floating bed dust remover, for hot industry dedusting.
Background technology
In chemical industry, oil, smelting, electric power and other industry, often produce high-temperature flue gas.As the high-temperature reacting gas of petrochemical industry and chemical engineering industry, metallurgical industry blast furnace and converter coal gas of high temperature, the high-temperature tail gas of glass industry, the high-temp waste gas etc. of boiler, incinerator.Particularly the energy needed for China's heavy industry is mainly based on coal, and the high temperature dust waste gas produced after coal burning is main atmosphere pollution.In recent years, China is increasingly strict to environmental requirement, in order to control flue dust class particle content in an atmosphere, realizing " energy-saving and emission-reduction ", at electric power, chemical industry, material, metallurgy etc. is realize high-temperature flue gas purification technology in the industry of main energy sources to have become an important brainstorm subject with coal.
Hot industry gas contains a large amount of physical sensible heat, potential chemical heat, kinetic force and available material, and as solid catalyst, its Appropriate application has huge economic worth.Therefore, the purifying and dedusting of high-temperature gas realizes the requisite key technology of high-temperature gas resource rational utilization, is also simultaneously an advanced green technology.With conventional Gas phase Smoke ratio, under hot conditions, because waste gas viscous force has larger change, humidity declines to a great extent, and fine grained coacervation greatly reduces, so have more highly difficult to the separation of particulate.Most widely used is at present electrostatic precipitator and sack cleaner.Although it is high that electrostatic precipitator has efficiency of dust collection, the advantage that the pressure loss is little, but its range of application is subject to the restriction of dust specific resistance, efficiency of dust collection degradation under high temperature, current research display electrostatic precipitator can process the maximum temperature of gas at about 450 DEG C, is difficult to the dust removal requirement adapting to high-temperature flue gas.Various forms of electrostatic dust collection equipment is generally undesirable to the fine dust removal efficiency of particle diameter in 0.1 ~ 10 μm of scope simultaneously, and efficiency of dust collection is usually below 80%.Although sack cleaner can reach ideal effect to the process of fine solid particle, the life-span of filter bag seriously governs the development of sack cleaner.Under hot conditions, breaking more easily appears in cloth bag, causes ash discharge concentration to raise rapidly, and efficiency of dust collection declines.
At present, the processing method of China's high temperature dust waste gas is pass through water condensation mostly, high-temp waste gas is down to about 200 DEG C, use sack cleaner dedusting again, gas drops to low-temperature condition from the condition of high temperature, have lost most of sensible heat, in order to utilize this part sensible heat, have to adopt complicated system and device, this not only adds investment and the operating cost of condensing plant, also make a large amount of heat energy loss.High-temperature dry cleaning system, not only farthest can utilize physical sensible heat and potential chemical heat, the raising energy utilization rate of gas, also simplify technical process simultaneously, reduce technological equipment investment, avoid and the secondarily polluted water that cooling processing and wet dedusting technology bring is carried out to flue gas.
At home, all there are some problems in actual applications to the purification techniques of flue gas in most industries, as bag filter temperature can not use more than 250 DEG C; Wet dust removal makes its heat energy do not fully not utilized; Electrostatic precipitator is taken up an area many, and cost of investment is high, also has problems such as the sensitiveness of character and the corrosion of electric level such as the ratio resistance of dust and gas componants.Simultaneously, under high temperature, condition of high voltage, electric cleaner, screen cloth and baffle filter etc. all can not meet the requirement of press cure bed burning (PFBC) and integrated coal gasification combined cycle (IGCC), and the key technology solving restriction PFBC and IGCC development is high-temperature dry gas purification technique.
For the problems that China exists at high-temperature tail gas or process gas dedusting, proposed here a kind of new approaches of dedusting, Here it is utilizes the effect of externally-applied magnetic field that micron-sized magnetic powder material is suspended in tower body to be formed porous to float bed, grit in the gas be filtered through, obtain the effect be separated, i.e. electromagnetism dedusting.The multitube high-temperature electromagnetic floating bed dust arrester of this project invention, filtrate is cheap and easy to get, has the advantages such as anticorrosive, high temperature resistant.It is consistent that multitube dust arrester has gas channel resistance, and air inlet stream is evenly distributed, and reduces the advantage of fleeing back-mixing.Device structure simple and flexible, can be directly used in high-temperature dust removal.
The means of current cleaning high-temp flue gas have cyclone separator, wet sprinkling dedusting, electric cleaner and high temperature resistant porous filter material etc.Cyclone separator can only remove dust granules thicker in flue gas, and the efficiency of dust collection of wet sprinkling dedusting and electric precipitation is not high yet, and the residual particles concentration of its Purge gas is respectively 100mg/m
3and 10mg/m
3, and all need to consume a large amount of water, the sensible heat of high-temperature flue gas is also not used.The efficiency of dust collection of high temperature resistant porous filter material is high, and the residual particles concentration of its Purge gas can be low to moderate 1mg/m
3, filtering accuracy can reach pattern of sub-micron level, is particularly suitable for the filtration to PM2.5 particle in high-temperature gas, and do not consume water, but current research work improves grain bed to the dust removal by filtration efficiency of fine dust, improves its deashing regeneration techniques, increase the service life.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of advantage having grain bed and fluid bed concurrently, the contact between gas-particle two-phase can be promoted, be convenient to again particle upgrade, there is flow area large, bed pressure drop is little, be applicable to the features such as continuously operations, be applicable to high temperature, high pressure, the high multitube high-temperature electromagnetic floating bed dust remover corroding flue gas ash removal under occasion.
For reaching above-mentioned purpose, a kind of multitube high-temperature electromagnetic of the present invention floating bed dust remover, described deduster comprises cleaner body, described cleaner body comprises, in, lower three sections of cylindrical shells, described middle cylinder inside is provided with multitube and floats bed, outside is provided with solenoid, described solenoid connects dc source, described multitube is floated in bed pipe and is filled with magnetic-particle, described lower cylinder sidewall is provided with air inlet, bottom is provided with media regeneration groove, automatic brake valve plate is provided with between described lower cylinder and described media regeneration groove, described media regeneration trench bottom is provided with useless slurry outlet, described media regeneration groove sidewall is connected with auger conveyor, the described auger conveyor other end is connected with mechanical lift bucket, described mechanical lift bucket is connected with granule distribution, described granule distribution is positioned at described top cylindrical shell, described top cylinder lateral wall is connected with gas outlet.
Wherein said lower cylinder air inlet reducer tee is connected with powder producer and air blast.
Wherein said granule distribution is just floating to described multitube the mouth of pipe of bed.
The wherein said multitube pipe in bed that floats is pipe, is 17.
Wherein said top cylindrical shell, described lower cylinder and described lower cylinder pass through Flange joint successively.
The end, gas outlet of wherein said top cylindrical shell is connected with air-introduced machine.
Be provided with between wherein said gas outlet and described air-introduced machine and be connected with elementary errors differential manometer and flow control valve in turn.
Dust monitor is provided with between wherein said flow control valve and described air-introduced machine.
It is 45-60 degree that wherein said mechanical lift bucket connects with described granule distribution setting angle.
Wherein said magnetic-particle height is 4mm.
Multitube high-temperature electromagnetic floating bed dust remover difference from prior art of the present invention is that the present invention achieves following technique effect:
(1) by regulating Current Control magnetic field intensity, change the voidage of magnetic-particle bed, form adjustable floating bed, adjustable range is wide, can realize continuous filtration dedusting;
(2) due to the effect of externally-applied magnetic field, in bed, magnetic-particle is ordered arrangement, increases the voidage of bed, improves the gas handling capacity of unit are;
(3) because traditional fixed bed deduster is not suitable for continuous operation, once be covered with dust around particle, just can not continue trapping, need to switch, clean.And fluid bed deduster greatest drawback be bubble in bed is that dust provides passage, make dust avoid the trapping of particle to it, therefore trapping separative efficiency decline greatly.Multitube high-temperature electromagnetic floating bed dust remover of the present invention is a kind of Novel dust collection device between grain bed deduster (fixed bed deduster) and fluid bed deduster, and gas-solid contacts, efficiency of dust collection is high, facilitate without gas short circuit, filtrate renewal;
(4) magnetic filtrate is cheap and easy to get, has the advantages such as high temperature resistant, corrosion-resistant, and device structure is simple, solves a difficult problem for high temperature removal dust;
(5) in multitube high-temperature electromagnetic floating bed dust remover, magnetic-particle is evenly arranged along magnetic induction line, uniform porosity bed inside is not easily occurred ditch stays and short circuit, thus improve efficiency of dust collection;
(6) take the method for external electric field is applied to improve the efficiency of dust collection of trickle grit to stratum granulosum, taken into account efficiency of dust collection and filtered pressure drop, having achieved the integration of filtrations, deashing, being easy to maximize, applicable high temperature and high pressure gas dedusting;
(7) owing to adopting dry method dust, not only save water source, avoid secondary pollution, and the clean gas after filtering can reclaim heat, economize energy.
Below in conjunction with accompanying drawing, the invention will be further described.
Accompanying drawing explanation
Fig. 1 is multitube high-temperature electromagnetic floating bed dust remover structural representation of the present invention;
Fig. 2 is the front view of multitube high-temperature electromagnetic floating bed dust remover dedusting cylindrical shell of the present invention;
Fig. 3 is the side view of multitube high-temperature electromagnetic floating bed dust remover dedusting cylindrical shell of the present invention;
Fig. 4 is the top view of multitube high-temperature electromagnetic floating bed dust remover dedusting cylindrical shell of the present invention.
Description of reference numerals: 1. useless slurry outlet; 2. media regeneration groove; 3. automatic brake valve plate; 4. air blast; 5. powder producer; 6. air inlet; 7. solenoid; 8. multitube is floated bed; 9. D.C. regulated power supply; 10. cleaner body; 11. granule distribution; 12. mechanical lift buckets; 13. gas outlets; 14. auger conveyors; 15. elementary errors differential manometers; 16. flow control valves; 17. dust monitors; 18. air-introduced machines; 19. flanges; 20. flange connecting holes.
Detailed description of the invention
Below in conjunction with embodiment, to above-mentioned being described in more detail with other technical characteristic and advantage of the present invention.
As illustrated in fig. 1 and 2, a kind of multitube high-temperature electromagnetic of the present invention floating bed dust remover, described deduster comprises cleaner body 10, cleaner body 10 comprises, in, lower three sections of cylindrical shells, three sections of cylindrical shells are connected through flange connecting hole 20 by flange 19, described middle cylinder inside is provided with multitube and floats bed 8, outside is provided with solenoid 7, solenoid 7 connects D.C. regulated power supply 9, the multitube bed 8 that floats comprises 17 pipes, the magnetic-particle that 4mm is high is filled with in pipe, described lower cylinder sidewall is provided with air inlet 6, air inlet 6 reducer tee is connected with air blast 4 and powder producer 5, bottom is provided with media regeneration groove 2, automatic brake valve plate 3 is provided with between described lower cylinder and media regeneration groove 2, the outlet 1 of useless slurry is provided with bottom media regeneration groove 2, media regeneration groove 2 sidewall is connected with auger conveyor 14, auger conveyor 14 other end is connected with mechanical lift bucket 12, machinery lift bucket 12 is connected with granule distribution 11, machinery lift bucket 12 and granule distribution 11 setting angle are between 45-60 degree, granule distribution 11 is positioned at described top cylindrical shell and just floats bed 8 mouth of pipe to multitube, described top cylinder lateral wall is connected with gas outlet 13, and end, gas outlet 13 is connected with air-introduced machine 18, is once provided with elementary errors differential manometer 15, flow control valve 16 and dust monitor 17 between gas outlet 13 and air-introduced machine 18.
As Fig. 4, multitube float bed 8 every arm in be respectively charged into be highly the magnetic-particle of 4mm, according to as shown in Figure 2, by flange 19 and flange connecting hole 20, deduster three sections is installed together.As Fig. 1, the solenoid 7 be connected with dc source 9 is installed outward at cleaner body 10 interlude 8, after dc source 9 is energized, form the magnetic field that approaches uniformity is stable in solenoid 7, the multitube magnetic-particle floated in bed 8 is subject to magneticaction suspension and forms the floating bed that can move up and down.Open air blast 4 and powder producer 5, carry out being mixed to form dusty gas from the dust in the air of air blast 4 and powder producer 5, dusty gas flows through multitube and to float bed 8, fully contact with magnetic-particle from the dust in powder producer 5, be retained down because being subject to the effects such as inertia, interception, diffusion, screening, under the effect of air-introduced machine 18, purified gas flows out through gas outlet 13, and dusty gas obtains high-efficient purification.Measure the bed pressure drop in dust removal process with elementary errors differential manometer 15, regulated the uninterrupted in dust removal process by flow control valve 16, finally detect the concentration of the rear dusty gas of purification with dust monitor 17.Along with constantly carrying out of dust removal process, multitube is floated a large amount of dust of magnetic-particle surface deposition in bed 8, efficiency of dust collection declines, now need to carry out deashing process to magnetic-particle, close dc source 9, magnetic force disappears, open automatic brake valve plate 3, the multitube magnetic-particle in bed 8 that floats falls into media regeneration groove 2, magnetic-particle after deashing is delivered in mechanical lift bucket 12 through auger conveyor 14, by granule distribution 11, magnetic-particle being uniformly distributed in multitube floats in bed 8, useless slurry after deashing is discharged by the bottom useless slurry outlet 1 of media regeneration groove 2, realize recycling of filtrate.
Multitube high-temperature electromagnetic floating bed dust remover is under the effect of externally-applied magnetic field, achieving magnetic-particle is suspended in multitube dedusting main body, realize the filtration to dusty gas by the filtration mechanism of inertial collision, diffusional deposition, gravity sedimentation, directly interception, electrostatic attraction, there is the features such as high temperature resistant, persistence is good.Both the purification of dusty gas had been achieved, regeneration can be carried out to magnetic-particle again to reclaim, cost-saving, and the voidage of magnetic-particle bed is controlled by magnetic field intensity, compared with plain particles bed deduster, multitube high-temperature electromagnetic floating bed dust remover structure is simple, and bed is adjustable flexibly, not easily forms the phenomenon such as channel, cross-flow; Bed resistance is little, and purge mode is simple, solves the problem that fixed bed can not run continuously.
Compared with traditional deduster, this application of installation electromagnetic technique, efficiency of dust collection is high, and device structure is simple, flexible operation, good reliability.Magnetic material is high temperature resistant, corrosion-resistant, can high-temperature dust removal be directly used in, farthest utilize physical sensible heat and the potential chemical heat of gas, improve energy utilization rate.Magnetic material recycles, and reaches the object that energy-conserving and environment-protective reduce costs again.
Above-described embodiment is only be described the preferred embodiment of the present invention; not scope of the present invention is limited; under not departing from the present invention and designing the prerequisite of spirit; the various distortion that those of ordinary skill in the art make technical scheme of the present invention and improvement, all should fall in protection domain that claims of the present invention determines.
Claims (9)
1. a multitube high-temperature electromagnetic floating bed dust remover, it is characterized in that: described deduster comprises cleaner body, described cleaner body comprises, in, lower three sections of cylindrical shells, described middle cylinder inside is provided with multitube and floats bed, outside is provided with solenoid, described solenoid connects dc source, described multitube is floated in bed pipe and is filled with magnetic-particle, described lower cylinder sidewall is provided with air inlet, bottom is provided with media regeneration groove, automatic brake valve plate is provided with between described lower cylinder and described media regeneration groove, described media regeneration trench bottom is provided with useless slurry outlet, described media regeneration groove sidewall is connected with auger conveyor, the described auger conveyor other end is connected with mechanical lift bucket, described mechanical lift bucket is connected with granule distribution, described granule distribution is positioned at described top cylindrical shell, described top cylinder lateral wall is connected with gas outlet, described mechanical lift bucket and described granule distribution setting angle are 45-60 degree, described magnetic-particle is evenly arranged along magnetic induction line.
2. multitube high-temperature electromagnetic floating bed dust remover according to claim 1, is characterized in that: described lower cylinder air inlet reducer tee is connected with powder producer and air blast.
3. multitube high-temperature electromagnetic floating bed dust remover according to claim 1, is characterized in that: described granule distribution is just floating to described multitube the mouth of pipe of bed.
4. multitube high-temperature electromagnetic floating bed dust remover according to claim 1, is characterized in that: the described multitube pipe in bed that floats is pipe, is 17.
5. multitube high-temperature electromagnetic floating bed dust remover according to claim 1, is characterized in that: described top cylindrical shell, described lower cylinder and described lower cylinder pass through Flange joint successively.
6. multitube high-temperature electromagnetic floating bed dust remover according to claim 1, is characterized in that: the end, gas outlet of described top cylindrical shell is connected with air-introduced machine.
7. multitube high-temperature electromagnetic floating bed dust remover according to claim 6, is characterized in that: be provided with between described gas outlet and described air-introduced machine and be connected with elementary errors differential manometer and flow control valve in turn.
8. multitube high-temperature electromagnetic floating bed dust remover according to claim 7, is characterized in that: be provided with dust monitor between described flow control valve and described air-introduced machine.
9. multitube high-temperature electromagnetic floating bed dust remover according to claim 1, is characterized in that: described magnetic-particle height is 4mm.
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| CN201410722513.3A CN104474825B (en) | 2014-12-03 | 2014-12-03 | Multitube high-temperature electromagnetic floating bed dust remover |
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| CN201410722513.3A CN104474825B (en) | 2014-12-03 | 2014-12-03 | Multitube high-temperature electromagnetic floating bed dust remover |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106621672B (en) * | 2017-01-17 | 2018-12-11 | 哈尔滨工业大学 | A kind of magnetic control high-temperature gas segmented couples dust removal method |
| CN108816513B (en) * | 2018-05-30 | 2020-06-23 | 上海电力学院 | Multistage alternating catching type magnetic dust collecting system |
| DE102018124207B4 (en) * | 2018-10-01 | 2022-07-14 | Klaus Wilhelm | Device and method for dedusting bulk materials |
| CN110141918A (en) * | 2019-05-22 | 2019-08-20 | 内蒙古科技大学 | A kind of multichannel composite electromagnetic dust removal by filtration device |
| CN110743866A (en) * | 2019-10-17 | 2020-02-04 | 陕西中建建乐智能机器人有限公司 | Dust removal device for ventilating duct |
| CN113680145B (en) * | 2021-08-20 | 2023-04-07 | 中国石油大学(北京) | Circulating gas purification device and purification method thereof |
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|---|---|---|---|---|
| CN1526473A (en) * | 2003-09-22 | 2004-09-08 | 东南大学 | Magnetofluidized bed fume desulfurizer |
| CN201558636U (en) * | 2009-11-19 | 2010-08-25 | 鞍山凯信工矿设备有限公司 | High-temperature and high-efficiency electromagnetic floating bed dust remover |
| CN102423596A (en) * | 2011-09-06 | 2012-04-25 | 单文奎 | High-temperature dust remover |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3053726B2 (en) * | 1993-12-14 | 2000-06-19 | 綾子 波多野 | Dust remover |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1526473A (en) * | 2003-09-22 | 2004-09-08 | 东南大学 | Magnetofluidized bed fume desulfurizer |
| CN201558636U (en) * | 2009-11-19 | 2010-08-25 | 鞍山凯信工矿设备有限公司 | High-temperature and high-efficiency electromagnetic floating bed dust remover |
| CN102423596A (en) * | 2011-09-06 | 2012-04-25 | 单文奎 | High-temperature dust remover |
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