CN1232330C - Moving bed stratum granulosum filter of thermal conterflow uniform flow field - Google Patents
Moving bed stratum granulosum filter of thermal conterflow uniform flow field Download PDFInfo
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- CN1232330C CN1232330C CN 200310118945 CN200310118945A CN1232330C CN 1232330 C CN1232330 C CN 1232330C CN 200310118945 CN200310118945 CN 200310118945 CN 200310118945 A CN200310118945 A CN 200310118945A CN 1232330 C CN1232330 C CN 1232330C
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Abstract
The present invention relates to a moving bed granular layer filter of a counterflow type uniform flow field, which is mainly characterized in that the middle of a casing of the filter is provided with an airflow uniform distributing device formed by splicing a plurality of polygonal cone buckets. The moving bed granular layer filter solves the problem of nonuniform distribution of a gas flow field in the counterflow type moving bed granular layer filter. Compared with the prior art, when the moving bed granular layer filter is used for treating gas flow rate, the largest partial airflow velocity is obviously decreased so that the airflow is not easily fluidized; when the largest partial airflow velocity is adjusted to the same as that of the prior art, the air processing quantity of the whole filter can be greatly increased so that the equipment output force is increased. The moving bed granular layer filter is especially suitable for the maximization of filter volume.
Description
Technical field
The present invention is a kind of cleaner of filtering gas, and specifically, it is a kind of reverse-flow uniform flow field moving granular bed filter, is particularly useful for handling high temperature, the high-pressure filteration gas of air volume.
Background technology
Existing moving granular bed filter is divided into the different of the filtering gas direction of motion by particle layers and intersects streaming, downflow type and reverse-flow three types.Because moving the influence of the stratum granulosum voidage on the filtering gas uprush direction of reverse-flow stratum granulosum is less, the dust of stratum granulosum deposition reduces on the filtering gas airflow direction gradually in addition, and the always clean stratum granulosum that filtering gas ran into before leaving stratum granulosum, therefore, prevented effectively dust back-mixing and carry secretly, its dust removing effects is more superior than intersection streaming and downflow type, has good application prospect.According to existing reported in literature, reverse-flow moving granular bed filter generally has two kinds of intake methods, a kind of is as United States Patent (USP) 5,238, the 659 high temperature moving granular bed layer filter that provide, its filtering gas enters bed from the circumferential annular shutter in bed body middle part, upwards flows then, forms adverse current with the particle layers that moves down.Another kind is as Americana (Guillory J L.Progress in hightemperature moving bed granular filter development at combustion powercompany.Proc.of 2nk Annual contractors ' meeting on contaminant controlin hot coal derived gas sterams.Feb, 1982.87) a kind of reverse-flow moving granular bed filter introduced, its filtering gas enters bed from the central intake pipe that vertically stretches into filter housings and direct insertion bed, upwards flow then, form adverse current with the particle layers that moves down.These two kinds of intake methods are present reverse-flow moving granular bed filter intake methods commonly used.The problem that they exist is: filtering gas all is to introduce from a certain zone of particle layers, this has just caused passing gas velocity field distribution inhomogeneous of particle layers, that is to say, the position speed that air-flow is concentrated is higher, easily cause stratum granulosum fluidisation (do not meet the reverse-flow gas superficial rate of filtration should less than the prerequisite of stratum granulosum critical fludization velocity), and air-flow concentrates the gas velocity at peripheral position in addition, position lower, even is zero, causes the waste of subregion stratum granulosum again; Particularly after the filter volume amplified, this phenomenon was just more outstanding.In order to solve the problem of above-mentioned local granule laminarization, common way is to reduce the tolerance of filter process, and overall gas speed is reduced, and that is to say exerts oneself with reduction equipment exchanges for, is not best solution.Also do not see at present and have the equipment that better addresses the above problem to come out.
Summary of the invention
The objective of the invention is at the problem in the above-mentioned prior art, at first provide and a kind ofly can make the uniform reverse-flow uniform flow field moving granular bed filter of particle layers gas velocity field distribution, secondly is the high voltage performance that improves this filter.
For achieving the above object, solution of the present invention is as follows:
It has a filter housings, its special character is: be provided with a filtrate inlet tube and a clean gas outlet that stretches in this housing in case top, the middle part is provided with an airflow uniform distribution device that is spliced by a plurality of polygon awl buckets in this housing, on the case side perisporium that this airflow uniform distribution device is installed, be provided with the radially vertical filtering gas inlet tube that connects, and the air inlet of this filtering gas inlet tube is provided with the filtrate outlet facing to helping the position that filtering gas flows to airflow uniform distribution device downside connected space at this housing lower bottom part.
On the basis of above-mentioned structure, the further improvement of the present invention scheme is as follows:
Above-mentioned airflow uniform distribution device is spliced by square awl bucket and square half cone bucket, and is provided with the awl bucket swash plate of a prolongation in the junction of the square awl bucket of filtering gas inlet pipes and inner walls.
Above-mentioned filter housings is connect by cylindrical body and high voltage bearing upper cover and low head and constitutes, bottom in described housing is provided with a circular awl bucket, circular awl bucket lower end and filtrate outlet join, and leave ventilative slit between described circular awl bucket and the inner walls.
By above-mentioned solution as can be seen, the present invention is provided with an airflow uniform distribution device at the middle part of filter housings, and filtering gas is laterally shifted onto the lower space of airflow uniform distribution device, go up then to bend and enter the airflow uniform distribution device and upwards operation, and mobile particle passes the airflow uniform distribution device from top to bottom and moves, and forms adverse current.Wherein filtering gas is shunted more equably by the airflow uniform distribution device, and the moving granular bed zonule by being cut apart by the airflow uniform distribution device respectively, thereby makes the gas velocity field distribution in the whole moving granular bed layer comparatively even.This improvement of the present invention compared with the prior art, when handling the same gas flow, its maximum local air flow speed obviously reduces, and is difficult for fluidisation; Adjust to when identical with prior art when maximum local air flow speed, can increase the processing tolerance of monolithic filter greatly, make the equipment raising of exerting oneself, it is specially adapted to the maximization of filter volume.One of further improvement of the present invention scheme is to adopt square awl bucket splicing airflow uniform distribution device, and it can make this airflow uniform distribution device splicing easily, makes simple.Two of further improvement of the present invention scheme can be bigger the high-voltage resistance capability of this filter housings of increase.
Description of drawings
Fig. 1, overall structure schematic diagram of the present invention.
One of A-A cross section structure schematic diagram of Fig. 2, Fig. 1.
Two of the A-A cross section structure schematic diagram of Fig. 3, Fig. 1.
Fig. 4, working state schematic representation of the present invention.
The specific embodiment
Describe structure of the present invention and operation principle in detail according to embodiment below.
Referring to Fig. 1, it has a filter housings 1, be provided with a filtrate inlet tube 4 that stretches in the housing at the top center place of housing 1, on this case top, also be provided with a clean gas outlet 7, be provided with a plurality of polygons of usefulness at the housing middle part and bore the airflow uniform distribution device 2 that is spliced that struggles against, this airflow uniform distribution device 2 connects firmly with inner walls, and its mode of connecting firmly can adopt welding, also can adopt the mode that connects firmly that flange is set at the housing middle part; Described filtering gas inlet tube 6 is arranged on the side perisporium at housing 1 middle part, and radially vertical and side perisporium connects, its air inlet is facing to the downside connected space of airflow uniform distribution device 2, and avoid blocking of airflow uniform distribution device as far as possible, make filtering gas can enter the downside connected space of airflow uniform distribution device smoothly; Lower bottom part at described housing 1 is provided with a filtrate outlet 5.In order to make filtrate 8 successfully shift to filtrate outlet 7 from the top down, the lower housing portion in the prior art is all made coniform, but cone shape high-voltage resistance capability is not too strong, and therefore, the present invention is improved this.To be housing 1 by cylindrical body 1.2 and high voltage bearing upper cover 1.1 and low head 1.3 connect constitutes, and in housing, be provided with a circular awl bucket, this circle awl bucket upper end adopts spot welding and inner walls to connect, there is air gap between then circular awl bucket and the inner walls, like this, can make circular awl bucket only play the guide effect of filtrate, and not bear pressure.Described circular awl bucket lower end and filtrate outlet 5 join, and then filtrate 8 is bored the filtrate outlet 5 that can directly lead that struggles against along circle.
Referring to Fig. 2, provide the example that airflow uniform distribution device 2 adopts the splicing of square awl bucket among the figure, it is spliced by square awl bucket 2.1 and square half cone bucket 2.2, and wherein square half cone bucket 2.2 is provided with for filling up the splicing space; In this example, help the requirement that filtering gas enters airflow uniform distribution device downside connected space smoothly in order to satisfy, the air inlet of described filtering gas inlet tube 6 splices the space that the place forms side by side facing to two square awl buckets, and at least these two side by side squares awl bucket and the filter housings junction of splicing a square awl bucket be set prolong swash plate 2.3 (other square awl bucket can not add prolong swash plate) with the filter housings junction, this prolongation swash plate 2.3 mainly be for the filtrate that blocks the whereabouts from inlet tube 6 fronts by influencing the downside connected space that filtering gas enters the airflow uniform distribution device.
Referring to Fig. 3, provide the example that airflow uniform distribution device 2 adopts 2.4 splicings of hexagon awl bucket among the figure, the air inlet of described filtering gas inlet tube 6 is still selected the space facing to two hexagon awl bucket splicing places formation, and is provided with the extension plate 2.5 of the two hexagons awl bucket of an one-tenth ridge shape at this position.Certain airflow uniform distribution device of the present invention is not limited to the example that Fig. 2 and Fig. 3 provide, and can also splice with other polygon awl bucket.
Referring to Fig. 4, the course of work of the present invention is: filtering material particle 8 enters filter from filtrate inlet tube 4, moves from the top down, through airflow uniform distribution device 2, circular awl bucket 3, discharges from filtrate outlet 5, by recycling behind the deashing; When wherein filtrate 8 was through airflow uniform distribution device 2, the airflow uniform distribution device was divided into uniform zonule with particle layers; Filtering gas enters filter from inlet tube 6, and laterally push the space (being the space that the following fistulae place of polygon awl bucket is linked to be) of airflow uniform distribution device bottom to, go up curved then and enter airflow uniform distribution device 2, and uply pass the moving granular bed layer and enter gas collection space 9 above the filter, discharge and enter the subsequent treatment operation from clean gas outlet 7 at last.
Claims (3)
1, a kind of reverse-flow uniform flow field moving granular bed filter, it has a filter housings (1), it is characterized in that: be provided with a filtrate inlet tube (4) and a clean gas outlet (7) that stretches in this housing at housing (1) top, the middle part is provided with an airflow uniform distribution device (2) that is spliced by a plurality of polygon awl buckets in this housing, on the case side perisporium that this airflow uniform distribution device is installed, be provided with the radially vertical filtering gas inlet tube (6) that connects, and the air inlet of this filtering gas inlet tube (6) is provided with filtrate outlet (5) facing to helping the position that filtering gas flows to the downside connected space of airflow uniform distribution device at this housing (1) lower bottom part.
2, reverse-flow uniform flow field moving granular bed filter according to claim 1, it is characterized in that: described airflow uniform distribution device (2) is spliced by square awl bucket (2.1) and square half cone bucket (2.2), and the junction of square awl bucket of locating at filtering gas inlet tube (6) and inner walls is provided with the awl bucket swash plate (2.3) of a prolongation.
3, reverse-flow uniform flow field moving granular bed filter according to claim 1 and 2, it is characterized in that: described filter housings is by cylindrical body (1.2) and high voltage bearing upper cover (1.1) and low head (1.3) connection formation, bottom in described housing is provided with a circular awl bucket (3), circular awl bucket lower end and filtrate outlet (5) join, and leave ventilative slit between described circular awl bucket (3) and housing (1) inwall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200310118945 CN1232330C (en) | 2003-12-18 | 2003-12-18 | Moving bed stratum granulosum filter of thermal conterflow uniform flow field |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200310118945 CN1232330C (en) | 2003-12-18 | 2003-12-18 | Moving bed stratum granulosum filter of thermal conterflow uniform flow field |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1552504A CN1552504A (en) | 2004-12-08 |
| CN1232330C true CN1232330C (en) | 2005-12-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 200310118945 Expired - Fee Related CN1232330C (en) | 2003-12-18 | 2003-12-18 | Moving bed stratum granulosum filter of thermal conterflow uniform flow field |
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Families Citing this family (11)
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| CN102764547B (en) * | 2012-07-26 | 2014-12-17 | 田鹏程 | Packing type dust remover |
| CN102786991A (en) * | 2012-08-22 | 2012-11-21 | 哈尔滨瑞格能源环境技术发展有限责任公司 | Particle bed dust removing device and dust removing method of low-temperature dry distillation gas |
| CN104436923B (en) * | 2014-11-07 | 2017-02-01 | 王树宽 | Reverse-flow moving bed crude gas dust remover, dust removing system and dust removing method |
| CN105032163A (en) * | 2015-07-02 | 2015-11-11 | 黄立维 | Method and apparatus for removing nitrogen oxide and sulfur dioxide from air flow |
| CN105296014A (en) * | 2015-09-24 | 2016-02-03 | 郭英姿 | High-temperature and high-pressure granular-bed filter device and filter material regenerating method |
| CN108392929B (en) | 2018-04-24 | 2023-12-15 | 中国石油大学(北京) | Separation device |
| CN109718633A (en) * | 2019-03-11 | 2019-05-07 | 杨松 | A kind of improvement low concentration VOCs exhaust gas moving bed |
| CN110898567B (en) * | 2019-04-23 | 2021-11-09 | 江苏集萃工业过程模拟与优化研究所有限公司 | Moving bed particle dust removal device and method capable of automatically adjusting speed of filter material |
| CN110152402B (en) * | 2019-05-31 | 2024-05-28 | 江阴远洲矿山工程机械有限公司 | Fluidized bed filter |
| CN110436619B (en) * | 2019-08-20 | 2021-11-26 | 徐州中知知识产权服务有限公司 | Industrial sewage acidizing equipartition ware |
| CN110527562A (en) * | 2019-09-18 | 2019-12-03 | 王树宽 | A kind of pyrolysis raw coke oven gas bonding dust removal method and moving bed filter collector |
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