CN102716628A - Grain de-dusting filter and de-dusting filtering method - Google Patents
Grain de-dusting filter and de-dusting filtering method Download PDFInfo
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- CN102716628A CN102716628A CN2012101808115A CN201210180811A CN102716628A CN 102716628 A CN102716628 A CN 102716628A CN 2012101808115 A CN2012101808115 A CN 2012101808115A CN 201210180811 A CN201210180811 A CN 201210180811A CN 102716628 A CN102716628 A CN 102716628A
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Abstract
The invention relates to a grain de-dusting filter and a de-dusting filtering method. The grain de-dusting filter comprises a de-dusting filter main body, a feeding system, an air intake system, an air outlet (8) and a discharging port (9), wherein the de-dusting filter main body is composed of a filter shell (4) and an inner component; the inner component is composed of a tower-shaped baffle set (5) and is arranged in the filter shell (4); the feeding system is composed of a height adjusting rod (1), an inner cylinder (2) and a feeding port (3); and the air intake system is composed of an air inlet (6) and an air inlet pipeline (7). Solid grain materials are taken as filtering mediums for purifying high-temperature dusty gas or removing impurity components, such as dust, and heavy tar, from pyrolysis gas according to the grain de-dusting filter and the de-dusting filtering method provided by the invention, and the grain de-dusting filter has the advantages of simple structure, small bed pressure drop, and the like.
Description
Technical field
The present invention relates to particle dedusting field, particularly, relate to a kind of particle dust removal filter and dust removal and filtration method of utilizing solid particle material to be used for the cleaning high-temp dusty gas or to remove compositions such as pyrolysis gas dust, heavy tar as filter medium.
Background technology
Dusty gas deduster commonly used in the art technology range of application has: cyclone dust collectors, sack cleaner, electrostatic precipitator etc.Cyclone dust collectors are to utilize centrifugal force from gas, to remove grit, and the type deduster is for the dust of 10-20 μ m, and efficiency of dust collection can reach 95%-98%, but for the dust less than 10 μ m, efficiency of dust collection is very low, can only reach 60%-80%.Sack cleaner mainly is outer filtration dedusting, and its efficiency of dust collection is higher, but intensity of cloth bag own and anti-wear performance are relatively poor, causes its life-span shorter, needs in time to change.Electrostatic precipitator is by electrostatic attraction effect dedusting, has the advantage that pressure drop is low, do not have obstruction, but the type deduster requires the ratio resistance of dust itself to control within the specific limits, causes its complex structure, cost height.And, generally can be divided into fixed bed, fluid bed and moving bed by the bed form for the particle deduster.The fixed bed efficiency of dust collection is higher, but it is a transient, constantly piles up in inter-granular porosity with dust, can cause pressure drop to increase, and efficiency of dust collection reduces, and the tolerance of filtration is also less, therefore necessary intermittent duty, and in time deashing is handled.Though it is bigger that the fluid bed deduster is handled gas flow, continuously-running, the bubble of fluidisation is that dust provides passage in the bed, makes it avoid the capture of particle to it, causes efficiency of dust collection lower.Moving bed has then been taken into account the advantage of the two, can move continuously, can guarantee high filtration efficiency again.
The moving bed deduster is to move down the purpose of upgrading filtrate to reach through granule filter material, therefore, and the vertical bed of the general employing of this filter.The direction that moves according to airflow direction and particle can be divided into reverse-flow and cross-current type again.U.S. Westinghouse company had once developed column granular bed filter, and it adopts a short and straight column that the interior filtrate of dust-contained airflow and moving bed is contacted closely.Electric heating worker research institute of country has developed the counter-flow moving bed granular-bed filter of five sieves; But when coal gas contacts with filtrate; May reduce the phenomenon that water recovery occurs because of temperature of gas; Condensing of water vapour makes dust strengthen greatly the adhesion of filtrate, and this will also possibly cause the obstruction of filtrate at feeding cycle device place simultaneously to causing filtrate in the dust remover and separating of dust difficulty.Japan coal mining research center (CMRC) and Kawasaki Heavy Industries (Kawasaki Heavy Industries) have developed jointly moving granular bed filter; It is to adopt the cross-flow way of contact to be used for the heating gas dedusting, and domestic Tsing-Hua University had also once developed the moving bed filter of cross-flow form.But the filter of this cross-current type, structural design are complicated, and filter also needs special design.
Because the pyrolysis of coal process can produce a large amount of tar; When temperature is lower than 300 ℃, a part of heavy tar will be separated out, when pyrolysis gas purifies through deduster; Contact with the dedusting medium and will make the condensation of part heavy tar and be hunted down; But also can cause the bonding between the medium simultaneously, possibly cause dead bed, system can't proceed.If temperature is higher, the tar quality that can cause again obtaining descends; And it is softening that higher temperature also can cause dedusting medium (particle) to take place, and also can cause dead bed.And the thickness of dedusting medium bed also is another factor that influences efficiency of dust collection, and the medium bed thickness efficient that then dust is captured in the gas is just high, but the too thick then installation cost of bed, energy consumption are high again.
Existing moving bed particle deduster mainly is the dust of removing in high-temperature gas or the coal gas of high temperature, and the heavy tar composition that is mingled with in the pyrolysis gas is then also inapplicable for removing.Separate out and bond when the meeting condensation when running into cold particle of contained tar ingredients in the pyrolysis gas, be easy to cause the dead bed phenomenon of particle layers; And the flexibility of the stratum granulosum thickness adjusted of existing moving bed particle deduster is also relatively poor, can not adjust thickness of feed layer at any time according to the character of dedusting medium.
Summary of the invention
The object of the invention aims to provide a kind of particle dust removal filter and dust removal and filtration method; This particle dust removal filter be utilize solid particle material as filter medium in order to the cleaning high-temp dusty gas or remove compositions such as dust in the pyrolysis gas, heavy tar; Have simple in structure, advantage such as bed pressure drop is little.
Particle dust removal filter of the present invention comprises: dust removal filter main body, gas handling system and gas outlet 8 and discharging opening 9;
Wherein, said dust removal filter main part is made up of filter housings 4 and inner member, and said inner member is made up of turriform baffle group 5, is arranged at filter housings 4 inside, the annular space that forms between the described turriform baffle group 5;
Said gas handling system is made up of air inlet 6 and admission line 7; Wherein, admission line 7 is bending, is arranged at filter housings 4 lower sides, and turriform baffle group 5 belows are stretched in its outlet side;
Said gas outlet 8 is arranged at filter housings 4 upper portion side wall; Said discharging opening 9 is arranged at the bottom of filter housings 4 lower sides.
As a kind of improvement of technique scheme, particle dust removal filter of the present invention also comprises feed system, and said feed system is made up of bed depth adjusting rod 1, inner core 2 and charging aperture 3; It is inner that said inner core 2 is positioned at filter housings 4 top urceolus, inner core 2 tops connection height regulating rod 1, and lateral wall connects charging aperture 3.
As a kind of improvement of technique scheme, said filter housings 4 tops are cylindrical, and it is conical that the bottom is.
As another improvement of technique scheme, the upper diameter of every layer of baffle plate of said turriform baffle group 5 is less than the lower diameter of last layer baffle plate.
As another improvement of technique scheme, the level inclination β of every layer of baffle plate of said turriform baffle group 5 is greater than the stocking angle α of the solid particle that feeds from charging aperture 3.
Dust removal and filtration method based on above-mentioned particle dust removal filter of the present invention may further comprise the steps:
1) adds solid particle, make its formation that above the turriform baffle plate of turriform baffle group 5, distributes material bed;
2) introduce gas by air inlet 6, and get into dust removal filter main body 4 through admission line 7, this unstripped gas passes through along the circular passage that is formed by space between the turriform baffle group 5; After solid particle material and the unstripped gas effect,, finally carry the solid particle of impurity and discharge by discharging opening 9 along the sidewall whereabouts of dust removal filter main body 4; Unstripped gas fully contacts with solid particle on being distributed in the turriform baffle plate, and clean air is after treatment discharged by gas outlet 8.
According to dust removal and filtration method of the present invention, step 1) is sent into solid particle in the dust removal filter main body 4 through inner core 2 by charging aperture 3, regulates the blanking height of particle in dust removal filter main body 4 through bed depth adjusting rod 1.
According to dust removal and filtration method of the present invention, said gas is preferably the pyrolysis gas that contains tar.
Particle dust removal filter of the present invention and dust removal and filtration method utilize solid particle material as filter medium in order to remove grit in the high-temperature gas, or to be used for removing impurity components such as pyrolysis gas dust, heavy tar; Have simple in structure, advantage such as bed pressure drop is little.Concrete advantage of the present invention is:
1, solid particle of the present invention is piled up naturally under the effect of turriform baffle plate, and is controlled the height that material gets into filter through adjusting rod through charging aperture entering filter, to regulate and control the thickness of feed layer that solid particle distributes on the turriform baffle plate.
2, the present invention can be through changing the inclination angle that is provided with of turriform baffle group, to regulate the thickness of feed layer of solid particle on baffle plate.
3, the present invention also can be through regulating discharging speed, with the control time of staying of solid particle in filter, thereby controls time of contact of unstripped gas and solid particle flexibly.
4, the solid particle wider application range used of the present invention can combine the characteristic of unstripped gas, the granule size and the distribution of regulation and control particle.
5, the high temperature unstripped gas among the present invention can play The pre-heat treatment or predrying effect to solid particle through heat exchange, can make full use of waste heat, improves the thermal efficiency of whole system.
6, the present invention not only can be used for the udst separation of high-temperature gas, but also can be used for removing the heavy tar composition in the pyrolysis gas.Especially when adopting coal particle as the dedusting medium, pyrolysis gas is hunted down its contained heavy tar and dust through particle layers, gets in next device with coal particle and continues reaction, and do not need Separation and Recovery.
Description of drawings
Fig. 1 is the structural representation of a kind of particle dust removal filter of the present invention.
The accompanying drawing sign
1, bed depth adjusting rod 2, inner core 3, charging aperture
4, filter housings 5, turriform baffle group 6, air inlet
7, breather line 8, gas outlet 9, discharging opening
The specific embodiment
Below in conjunction with the accompanying drawing and the specific embodiment particle dust removal filter of the present invention is described further.
As shown in Figure 1, particle dust removal filter of the present invention comprises: dust removal filter main body, gas handling system and gas outlet 8 and discharging opening 9;
Wherein, said dust removal filter main part is made up of filter housings 4 and inner member, and said filter housings 4 preferred structures are that top is cylindrical, and it is conical that the bottom is; Said inner member is made up of turriform baffle group 5, is arranged at filter housings 4 inside, the annular space that forms between the described turriform baffle group 5; Said gas handling system is made up of air inlet 6 and admission line 7; Wherein, admission line 7 is bending, is arranged at filter housings 4 lower sides, and turriform baffle group 5 belows are stretched in its outlet side; Said gas outlet 8 is arranged at filter housings 4 upper portion side wall; Said discharging opening 9 is arranged at the bottom of filter housings 4 lower sides.
Particle dust removal filter of the present invention also comprises feed system, and said feed system is made up of bed depth adjusting rod 1, inner core 2 and charging aperture 3; It is inner that said inner core 2 is positioned at filter housings 4 top urceolus, inner core 2 tops connection height regulating rod 1, and lateral wall connects charging aperture 3.
The upper diameter of every layer of baffle plate of said turriform baffle group 5 is less than the lower diameter of last layer baffle plate.
The level inclination β of every layer of baffle plate of said turriform baffle group 5 is greater than the stocking angle α of the solid particle that feeds from charging aperture 3.
Dust removal and filtration method based on above-mentioned particle dust removal filter of the present invention may further comprise the steps:
1) adds solid particle, make its formation that above the turriform baffle plate of turriform baffle group 5, distributes material bed;
2) introduce gas by air inlet 6, and get into dust removal filter main body 4 through admission line 7, this unstripped gas passes through along the circular passage that is formed by space between the turriform baffle group 5; After solid particle material and the unstripped gas effect,, finally carry the solid particle of impurity and discharge by discharging opening 9 along the sidewall whereabouts of dust removal filter main body 4; Unstripped gas fully contacts with solid particle on being distributed in the turriform baffle plate, and clean air is after treatment discharged by gas outlet 8.
According to above-mentioned dust removal and filtration method, preferably, by charging aperture 3 solid particle is sent in the dust removal filter main body 4 through inner core 2 in step 1), regulate the blanking height of particle in dust removal filter main body 4 through bed depth adjusting rod 1.
According to above-mentioned dust removal and filtration method, said gas is preferably the pyrolysis gas that contains tar.
Cold rough coal particle is got in the dust removal filter main body by charging aperture, and regulates the blanking height of coal particle through adjusting rod; Coal particle distributes above the turriform baffle group and forms the coal particle layer; 300 ℃ pending pyrolysis gas is got into by air inlet, and gets into filter through admission line, and pyrolysis gas passes through along a plurality of circular passages that formed by space between the turriform baffle group, fully contacts with coal particle layer on being distributed in baffle plate; Pyrolysis gas is discharged from the gas outlet behind dust removal and filtration; The coal particle that carries grit, heavy tar falls along the filter wall, is discharged by discharging opening at last.Efficiency of dust collection can reach 99%.
Quartz sand particle is got in the dust removal filter by charging aperture, and regulates the blanking height of quartz sand particle through adjusting rod; Particle distributes above the turriform baffle group and forms stratum granulosum; 800 ℃ high-temperature flue gas is fed by air inlet, gets into filter through admission line, and passes through along a plurality of circular passages that formed by space between the turriform baffle group, fully contacts, acts on quartz sand particle layer on being distributed in baffle plate; High-temperature flue gas is discharged from the gas outlet after dedusting, filtration; The filter wall falls the quartz sand particle that carries grit in gravity effect lower edge, is discharged by discharging opening at last.Efficiency of dust collection can reach 96%.
The grey ball of compression moulding is sent into by charging aperture, and under the gravity effect, gets in the dust removal filter, regulates the blanking height of grey ball through adjusting rod; The ash ball distributes above the turriform baffle group and forms stratum granulosum; 500 ℃ dusty gas is fed by air inlet; Get into filter through admission line; And pass through along a plurality of circular passages that form by space between the turriform baffle group; Fully contact, act on the grey ball layer on being distributed in baffle plate, after the dust in the air-flow was hunted down and holds back, clean air was discharged from the gas outlet; The filter wall falls the grey ball that carries grey grit in gravity effect lower edge, is discharged by discharging opening at last.Efficiency of dust collection can reach 96%.
It should be noted last that above embodiment is only unrestricted in order to technical scheme of the present invention to be described.Although the present invention is specified with reference to embodiment; Those of ordinary skill in the art is to be understood that; Technical scheme of the present invention is made amendment or is equal to replacement, do not break away from the spirit and the scope of technical scheme of the present invention, it all should be encompassed in the middle of the claim scope of the present invention.
Claims (8)
1. a particle dust removal filter is characterized in that, comprising: dust removal filter main body, gas handling system and gas outlet (8) and discharging opening (9);
Wherein, Said dust removal filter main part is made up of filter housings (4) and inner member; Said inner member is made up of turriform baffle group (5), is arranged at filter housings (4) inside, forms annular space between the baffle plate of described turriform baffle group (5);
Said gas handling system is made up of air inlet (6) and admission line (7); Wherein, admission line (7) is bending, is arranged at filter housings (4) lower sides, and turriform baffle group (5) below is stretched in its outlet side;
Said gas outlet (8) is arranged at filter housings (4) upper portion side wall; Said discharging opening (9) is arranged at the bottom of filter housings (4) lower sides.
2. according to the said particle dust removal filter of claim 1, it is characterized in that, also comprise feed system, said feed system is made up of bed depth adjusting rod (1), inner core (2) and charging aperture (3); It is inner that said inner core (2) is positioned at filter housings (4) top urceolus, inner core (2) top connection height regulating rod (1), and lateral wall connects charging aperture (3).
3. according to the said particle dust removal filter of claim 1, it is characterized in that said filter housings (4) top is cylindrical, it is conical that the bottom is.
4. according to the said particle dust removal filter of claim 1, it is characterized in that the upper diameter of every layer of baffle plate of said turriform baffle group (5) is less than the lower diameter of last layer baffle plate.
5. according to the said particle dust removal filter of claim 1, it is characterized in that the level inclination β of every layer of baffle plate of said turriform baffle group (5) is greater than the stocking angle α of the solid particle that feeds from charging aperture (3).
6. dust removal and filtration method based on the said particle dust removal filter of claim 1-5 may further comprise the steps:
1) adds solid particle, make its turriform baffle plate top distribution form material bed in turriform baffle group (5);
2) introduce gas by air inlet (6), and get into dust removal filter main body (4) through admission line (7), this unstripped gas passes through along the circular passage that is formed by space between turriform baffle group (5) baffle plate; After solid particle material and the unstripped gas effect,, finally carry the solid particle of impurity and discharge by discharging opening (9) along the sidewall whereabouts of dust removal filter main body (4); Unstripped gas fully contacts with solid particle on being distributed in the turriform baffle plate, and clean air is after treatment discharged by gas outlet (8).
7. dust removal and filtration method according to claim 6; It is characterized in that; Step 1) is sent into solid particle in the dust removal filter main body (4) through inner core (2) by charging aperture (3), regulates the blanking height of particle in dust removal filter main body (4) through bed depth adjusting rod (1).
8. dust removal and filtration method according to claim 6 is characterized in that, said gas is the pyrolysis gas that contains tar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210180811.5A CN102716628B (en) | 2012-06-04 | 2012-06-04 | Grain de-dusting filter and de-dusting filtering method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210180811.5A CN102716628B (en) | 2012-06-04 | 2012-06-04 | Grain de-dusting filter and de-dusting filtering method |
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| CN102716628A true CN102716628A (en) | 2012-10-10 |
| CN102716628B CN102716628B (en) | 2015-02-18 |
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| CN201210180811.5A Expired - Fee Related CN102716628B (en) | 2012-06-04 | 2012-06-04 | Grain de-dusting filter and de-dusting filtering method |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105199785A (en) * | 2014-10-23 | 2015-12-30 | 舒瑞 | High-temperature coal gas filtering and purifying device and method for static bed |
| CN108203586A (en) * | 2018-01-31 | 2018-06-26 | 神木市锦丰源洁净煤科技有限公司 | A kind of mixed coal pyrogenation and carbonization stove for loading novel inner member |
| TWI658857B (en) * | 2018-05-23 | 2019-05-11 | National Central University | Granular moving bed and method for removing tar using thereof |
| CN110523169A (en) * | 2019-09-09 | 2019-12-03 | 中国科学院过程工程研究所 | A kind of moving granular bed dust-extraction unit of adjustable filtrate thickness |
| CN111805784A (en) * | 2020-07-29 | 2020-10-23 | 南安市溪美林英花建筑物清洁服务中心 | Centrifugal dust removal cabinet for stone processing |
| CN111805785A (en) * | 2020-07-29 | 2020-10-23 | 南安市溪美林英花建筑物清洁服务中心 | Water curtain dust removal cabinet capable of improving dust removal rate |
| CN113680145A (en) * | 2021-08-20 | 2021-11-23 | 中国石油大学(北京) | Circulating gas purification device and purification method thereof |
| CN114920271A (en) * | 2022-05-26 | 2022-08-19 | 福建省龙德新能源有限公司 | Method for preparing lithium hexafluorophosphate by dry method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105199785A (en) * | 2014-10-23 | 2015-12-30 | 舒瑞 | High-temperature coal gas filtering and purifying device and method for static bed |
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| CN110523169B (en) * | 2019-09-09 | 2021-02-02 | 中国科学院过程工程研究所 | Movable granular bed dust removal device capable of adjusting thickness of filter material |
| CN111805784A (en) * | 2020-07-29 | 2020-10-23 | 南安市溪美林英花建筑物清洁服务中心 | Centrifugal dust removal cabinet for stone processing |
| CN111805785A (en) * | 2020-07-29 | 2020-10-23 | 南安市溪美林英花建筑物清洁服务中心 | Water curtain dust removal cabinet capable of improving dust removal rate |
| CN111805785B (en) * | 2020-07-29 | 2021-11-30 | 泉州市英花建筑物清洁服务有限公司 | Water curtain dust removal cabinet capable of improving dust removal rate |
| CN113680145A (en) * | 2021-08-20 | 2021-11-23 | 中国石油大学(北京) | Circulating gas purification device and purification method thereof |
| CN114920271A (en) * | 2022-05-26 | 2022-08-19 | 福建省龙德新能源有限公司 | Method for preparing lithium hexafluorophosphate by dry method |
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| CN102716628B (en) | 2015-02-18 |
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Address after: 053200 639 Jinji South Street, Jizhou District, Hengshui, Hebei. Co-patentee after: Institute of Process Engineering, Chinese Academy of Sciences Patentee after: Hebei Zhongke Energy Co.,Ltd. Address before: No. 639, Jinji South Street, Jizhou, Hebei, Hebei Co-patentee before: Institute of Process Engineering, Chinese Academy of Sciences Patentee before: JIZHOU ZHONGKE ENERGY Co.,Ltd. |
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Granted publication date: 20150218 |