CN103041652A - Biogas filter - Google Patents
Biogas filter Download PDFInfo
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- CN103041652A CN103041652A CN201210535782XA CN201210535782A CN103041652A CN 103041652 A CN103041652 A CN 103041652A CN 201210535782X A CN201210535782X A CN 201210535782XA CN 201210535782 A CN201210535782 A CN 201210535782A CN 103041652 A CN103041652 A CN 103041652A
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- ceramic element
- filter
- biogas
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Abstract
The invention disclose a biogas filter, wherein a filtrating unit composed of a plurality of ceramic filter cores for filtrating ash impurity and impurities in the biogas, is arranged in a cylinder. When the high-temperature biogas passes through the ceramic membrane filter cores of the filter, the dust in gas flow impacts the ceramic membrane filter cores and is held up. The high-temperature combustible gas with tar passes through the ceramic membrane filter cores, to separate the gas flow and a grain flow for removing dust in gas. The filter has the characteristics of high temperature resistance and good filtrating effect.
Description
Technical field
The invention belongs to industrial filter equipment, specifically relate to a kind of filter of the ash impurities for the filtering biological combustible gas.
Background technology
Biological fuel gas is a kind of of biomass energy, and it is that biomass material with solid is by changing into fuel gas under the biomass gasification technology hot conditions, in order to replace traditional natural gas resource.
Usually, because the burnout rate of biomass material itself is poor, the biological fuel gas that biomass gasifying furnace prepares all contains a large amount of flying dusts, solid particle and tar.In order to reduce combustible gas neutral and alkali dust to the corrosion of upstream device and to the obstruction of pipeline, under low energy consumption, realize the high-efficient purification of combustible gas, must under hot conditions, directly carry out gas solid separation.The problems such as the equipment corrosion that simultaneously, in the process of gas purification, will avoid as much as possible tar to condense causing and line clogging.
Cloth envelop collector is modal filter plant, and reason is its low cost of manufacture.But the problem that existing cloth envelop collector exists is: because the biological mass combustable gas temperature is higher, cause easily the cloth bag life cycle to descend, simultaneously, the biological mass combustable gas dustiness is higher, makes filter loading overweight, magnetic valve winding-up number of times increases, be unfavorable for saving energy and reduce the cost, more crucial is that the filter bores of cloth bag is larger, be difficult to small ash impurities is filtered, so that the filter effect of filter is undesirable.
Summary of the invention
The problem that exists in order to solve prior art, the filter that the invention provides a kind of applicable high-temperature dust removal, high-effective dust-removing and have the automatic block clearing function.
In order to realize above purpose, technical scheme of the present invention is as follows: a kind of biogas filter, comprise cylindrical shell, and inner barrel is provided for filtering out the filter element that is made of some ceramic elements that comprises of contained ash impurities and impurity in the biological fuel gas.
Further, the ceramic element on orifice plate consists of described filter element by orifice plate and vertical lifting, and orifice plate is arranged at the top of cylindrical shell.
Described orifice plate offers through hole, and described ceramic element middle part has blind hole, at the openend of blind hole convex shoulder is set, and described ceramic element is fastened on the through hole convex shoulder after inserting through hole.
Described filter element comprises that also carriage is by the column that stands vertically on base plate and the base plate for the carriage and the suspension rod that support ceramic element, and described column withstands the bottom of ceramic element.
Groove is offered in the bottom of described ceramic element, and column heads in the groove.
Described cylindrical shell is made of end socket, cylinder and barrel, and described orifice plate is arranged at the contact position of end socket and cylinder.
The top of described filter element arranges tracheae, and tracheae is equipped with and ceramic element nozzle one to one, the opening of nozzle alignment ceramic element.
Described tracheae is communicated with inert gas generator.
Between described tracheae and the inert gas holding vessel heating gas bag is set.
Compared with prior art, the present invention is owing to arrange ceramic element, when the high-temperature biomass combustible gas passes through the ceramic membrane filter core of filter, dust in the air-flow impacts the ceramic membrane filter core and is blocked, the high-temperature combustible gas body carries tar by the ceramic membrane filter core, can with air-flow and grain flow separately reach the purpose of dedusting, have the characteristics such as high temperature resistant, good filtration effect.In addition, when the filter pressure drop reaches certain numerical value, adopt high temperature inert gas blowback ceramic membrane filter core, can reach two purposes: the dust stratification that (1) will be attached on the ceramic membrane filter core is removed, and makes filter core recover dedusting function, reduces simultaneously filter pressure drop; (2) avoid high-temperature coke oil gas in cryogenic gas blowback process, to condense and separate out, stop up ceramic membrane filter core duct, guarantee that filter can long-time steady operation.
Description of drawings
Fig. 1 is the structural representation of filter.
Fig. 2 is the structural representation of filter element and back-blowing device.
Fig. 3 is the cut-away view of ceramic element.
Fig. 4 is the distribution map of tracheae.
The specific embodiment
As shown in Figure 1, the main body of filter is cylindrical shell, inner barrel assembling filter element 3 and back-blowing device 4.Cylindrical shell is made of end socket 5, cylinder 2 and cone cylinder 1.The top of end socket 5 sets out gas port 6, and the sidepiece of cylinder 2 is offered air inlet 7, and ash discharging hole 9 is offered in the bottom of cone cylinder 1.
As shown in Figure 2, filter element 3 is comprised of orifice plate 12,48 ceramic elements 11, carriage and suspension rods 17.Orifice plate 12 is assemblied in the contact position of end socket 5 and cylinder 2.Orifice plate is offered=48 through holes of 8 rows * 6 row, and ceramic element inserts in the through hole.In order to rock the bottom that prevents filter core, orifice plate 12 vertically connects suspension rods 17, and suspension rod ceiling mount bracket, carriage are used for the filter core bottom fixing.Carriage is made of base plate 10 and column 18, and column 18 withstands the filter core bottom, thereby realizes the bracket support filter core, plays the effect that prevents that filter core from rocking.In order to prevent that ceramic element is shifted at orifice plate, the open end of per four ceramic elements has stacked pressing plate 13, and pressing plate is connected with orifice plate by firm.
Back-blowing device 4 is set up in the top of filter element.Back-blowing device 4 comprises tracheae 15, gas bag 22 and nitrogen gas generator 23.The top that is positioned at ceramic element 11 is six groups of tracheaes 15, corresponding row's (8) ceramic element of each group tracheae.48 nozzles 16 of tracheae 15 assemblings, each ceramic element opening of nozzle alignment.Per three tracheaes connect a heating gas bag 22 for tracheae provides hot nitrogen, respectively arrange a heating gas bag 22 about cylindrical shell.The nitrogen of heating gas bag is supplied with by nitrogen gas generator.
As shown in Figure 3, ceramic element 11 is the silicon carbide ceramics membrane cartridge, and dimensions is φ 60 * 2000 * 10(mm).Blind hole 21 is offered at its middle part, the opening upwards of blind hole, and openend has convex shoulder 20.Groove 19 is offered in the bottom of blind hole 21.Ceramic element forms vertical lifting after inserting the through hole of orifice plate under the effect of convex shoulder.Column inserts in the groove, swings with the restriction ceramic element.
In order to improve the sealing between orifice plate and the ceramic element, at convex shoulder 20 places of ceramic element 11 seal washer 14 is set, the sealing pad is positioned at pressing plate below, and it has prevented that biological mass combustable gas from revealing herein.
The operation principle of filter is: the biological mass combustable gas that contains ash impurities is input in the cylinder from air inlet, and clean combustible gas penetrates into inwall from the micropore of ceramic element by outer wall, and ash impurities is trapped within outer wall, thereby reaches the purpose of gas solid separation.Clean combustible gas from the ceramic element opening is out discharged through the gas outlet of end socket.Through filtration after a while, certain row's filter core can cause filter effect to reduce owing to gathering too much dust, and the pressure drop of ceramic element is risen, and when a certain group of filter core reached blowback setting value (level pressure is poor), the nitrogen of high pressure was heated to 400 ℃ by heat exchanger.Gas bag inner high voltage nitrogen outputs in the tracheae, and by nozzle alignment filter core opening nitrogen blowing inward, nitrogen outwards blows out from the micropore of filter core inwall, and the impurity that is attached to the filter core outer wall is blown off, and falls to ash bucket, is discharged by ash bucket, and filter core recovers filter capacity again.At this moment, other five groups of still normal filtration work of filter core.
Before the filter start, at first should carry out preheating, can adopt cycling hot nitrogen to carry out preheating, internal temperature reaches after 400 ℃, can inlet air filtration.Pre-thermal parameter is: 450 ℃ of temperature, air circulation 100m
3/ h, be 1～2 hour preheating time.Certainly, the preheating before the filter start, the flame that can also adopt burning coal gas to produce carries out preheating to filter interior, and the used time of this preheating method is shorter, only need half an hour, and cost that preheating is spent is lower.
When filter is shut down; for the residual biomass combustible gas is drained; and make the ceramic element protection clean (plate that prevents tar goes out to stop up ceramic element); need pass into hot nitrogen and not drain combustible gas and replace: after stopping to input biological mass combustable gas; start heat air job contract work and in cylindrical shell, input hot nitrogen; the hot nitrogen sustainable participation does not drain the filtration of biological mass combustable gas, until the complete expelling tube of residual biomass combustible gas is external.The parameter of replacement process is: temperature is more than 400 ℃, and the time, air quantity was at 100m greater than 10min
3H.
Claims (9)
1. a biogas filter comprises cylindrical shell, it is characterized in that: inner barrel is provided for filtering out the filter element that is made of some ceramic elements that comprises of contained ash impurities and impurity in the biological fuel gas.
2. biogas filter according to claim 1 is characterized in that, the ceramic element on orifice plate consists of described filter element by orifice plate and vertical lifting, and orifice plate is arranged at the top of cylindrical shell.
3. biogas filter according to claim 2 is characterized in that, described orifice plate offers through hole, and described ceramic element middle part has blind hole, at the openend of blind hole convex shoulder is set, and described ceramic element is fastened on the through hole convex shoulder after inserting through hole.
4. biogas filter according to claim 3 is characterized in that, described filter element comprises that also carriage is by the column that stands vertically on base plate and the base plate for the carriage and the suspension rod that support ceramic element, and described column withstands the bottom of ceramic element.
5. biogas filter according to claim 4 is characterized in that, groove is offered in the bottom of described ceramic element, and column heads in the groove.
6. biogas filter according to claim 2 is characterized in that, described cylindrical shell is made of end socket, cylinder and barrel, and described orifice plate is arranged at the contact position of end socket and cylinder.
7. biogas filter according to claim 1 is characterized in that, the top of described filter element arranges tracheae, and tracheae is equipped with and ceramic element nozzle one to one, the opening of nozzle alignment ceramic element.
8. biogas filter according to claim 7 is characterized in that, described tracheae is communicated with inert gas generator.
9. biogas filter according to claim 8 is characterized in that, between described tracheae and the inert gas holding vessel heating gas bag is set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210535782XA CN103041652A (en) | 2012-12-12 | 2012-12-12 | Biogas filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210535782XA CN103041652A (en) | 2012-12-12 | 2012-12-12 | Biogas filter |
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| Publication Number | Publication Date |
|---|---|
| CN103041652A true CN103041652A (en) | 2013-04-17 |
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ID=48054651
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| CN201210535782XA Pending CN103041652A (en) | 2012-12-12 | 2012-12-12 | Biogas filter |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103614167A (en) * | 2013-11-20 | 2014-03-05 | 中国科学院广州能源研究所 | High-temperature dust-removing and coke-removing integrated purifying process of biomass crude gas |
| CN104645731A (en) * | 2015-01-30 | 2015-05-27 | 成都易态科技有限公司 | Gas filter element anaerobic regeneration method |
| CN104667650A (en) * | 2015-02-28 | 2015-06-03 | 成都易态科技有限公司 | Filter element cleaning method |
| CN106215593A (en) * | 2016-08-30 | 2016-12-14 | 河南龙成煤高效技术应用有限公司 | A kind of combined type filter plant |
| CN108671667A (en) * | 2018-06-29 | 2018-10-19 | 成都易态科技有限公司 | It is a kind of to discharge gas for external environment to realize the device of equipment release |
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| CN201735287U (en) * | 2010-07-13 | 2011-02-09 | 科林环保装备股份有限公司 | High-temperature dust remover of ceramic filter drum |
| CN201871295U (en) * | 2010-11-05 | 2011-06-22 | 朱先胜 | Novel waste gas purification apparatus |
| CN102172451A (en) * | 2011-03-31 | 2011-09-07 | 飞潮（无锡）过滤技术有限公司 | Filter for carrying out gas-solid separation on high temperature flue gas |
| CN202962175U (en) * | 2012-12-12 | 2013-06-05 | 广州迪森热能技术股份有限公司 | Filter for biomass gases |
-
2012
- 2012-12-12 CN CN201210535782XA patent/CN103041652A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201735287U (en) * | 2010-07-13 | 2011-02-09 | 科林环保装备股份有限公司 | High-temperature dust remover of ceramic filter drum |
| CN201871295U (en) * | 2010-11-05 | 2011-06-22 | 朱先胜 | Novel waste gas purification apparatus |
| CN102172451A (en) * | 2011-03-31 | 2011-09-07 | 飞潮（无锡）过滤技术有限公司 | Filter for carrying out gas-solid separation on high temperature flue gas |
| CN202962175U (en) * | 2012-12-12 | 2013-06-05 | 广州迪森热能技术股份有限公司 | Filter for biomass gases |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103614167A (en) * | 2013-11-20 | 2014-03-05 | 中国科学院广州能源研究所 | High-temperature dust-removing and coke-removing integrated purifying process of biomass crude gas |
| CN103614167B (en) * | 2013-11-20 | 2015-01-07 | 中国科学院广州能源研究所 | High-temperature dust-removing and coke-removing integrated purifying process of biomass crude gas |
| CN104645731A (en) * | 2015-01-30 | 2015-05-27 | 成都易态科技有限公司 | Gas filter element anaerobic regeneration method |
| CN104667650A (en) * | 2015-02-28 | 2015-06-03 | 成都易态科技有限公司 | Filter element cleaning method |
| CN104667650B (en) * | 2015-02-28 | 2016-08-24 | 成都易态科技有限公司 | Filter core cleaning method |
| CN106215593A (en) * | 2016-08-30 | 2016-12-14 | 河南龙成煤高效技术应用有限公司 | A kind of combined type filter plant |
| CN108671667A (en) * | 2018-06-29 | 2018-10-19 | 成都易态科技有限公司 | It is a kind of to discharge gas for external environment to realize the device of equipment release |
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Application publication date: 20130417 |