CN103055629A - Ceramic tube breakage protection structure of flue gas filter - Google Patents
Ceramic tube breakage protection structure of flue gas filter Download PDFInfo
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- CN103055629A CN103055629A CN2011103185097A CN201110318509A CN103055629A CN 103055629 A CN103055629 A CN 103055629A CN 2011103185097 A CN2011103185097 A CN 2011103185097A CN 201110318509 A CN201110318509 A CN 201110318509A CN 103055629 A CN103055629 A CN 103055629A
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Abstract
The invention discloses a ceramic tube breakage protection structure of a flue gas filter. The lower part of a filter cylinder body is provided with a filter air cavity, the upper part of the filter cylinder body is provided with a clean air cavity, an air outlet end of a Venturi tube is connected with a backflushing air pipe through a connection pipe, a top air path of the backflushing air pipe is provided with clean air lead-out bypasses and is provided with a protective ball valve, and each clean air lead-out bypass is communicated with the clean air cavity through an air inner circulation loop and a clean air lead-in opening. According to the utility model, a backflushing air pipe air path of the conventional filter is skillfully utilized, after a ceramic tube is broken, the ceramic tube is sealed instantly, and the pollution to the whole filter is avoided, so that the filtering efficiency and quality are ensured; therefore, as long as the filtration of some groups of ceramic tubes is stopped, other groups of ceramic tubes can perform filtering operation normally, the whole device does not need to be stopped and overhauled, and only the group of broken ceramic tubes need to be overhauled and changed during maintenance, thus the maintenance efficiency is effectively improved, and a large amount of labor and material resources are saved.
Description
Technical field
The present invention relates to the flue gas purifying equipment field, especially the earthenware of smoke filter damages the protection structure.
Background technology
" rich coal, oil starvation, weak breath " is the energy resources present situation of China, the Development of Novel Coal Chemical Industry, particularly along with the development of China's Coal Gasification Technology, take full advantage of coal development Coal Chemical Industry and the novel gas generation technology of China's abundant, the comprehensive utilization and the petroleum replacing that are conducive to resource, meet the present industrial policy of China, and that the purification techniques of coal gas seems in whole technological process is particularly important.Smoke filter is the key equipment in combustion gas-Steam Combined Cycle technology, the ceramic membrane filter tube that 300～500 ℃ high temperature and high pressure gas enters this equipment filters, the fine solid particle particle is isolated in the filter membrane surface on earthenware surface, and clean high-temperature gas is then separated out and is collected by the earthenware tube wall.The purification techniques of high-temperature gas is extremely important, and is totally thorough if the particle removal in the combustion gas gets, and then can prevent particle to the erosion of gas turbine blades, prevents from producing vibrations because fine powder coheres, and prolongs the service life of blade, thereby guarantees the long-time running in power station; Through the high-temperature flue gas after purifying, can reach the requirement of new environmental protection (NSPS) in addition.
The internal structure of existing smoke filter as shown in Figure 1, filter cylinder 1 bottom is for filtering air cavity 11, top is that 3, two air cavitys of clean air cavity are by the airtight isolation of dividing plate; Air inlet pipe 12 is from the access of filter 7 bottoms and be arranged on the central authorities of filtering air cavity 11, organizes the periphery that ceramic filter tube assembly 4 is distributed on air inlet pipe more, and every group of ceramic filter tube assembly 4 includes branched ceramic filter tube, is generally 24～48; Be provided with Venturi tube 2 on the top of every group of ceramic filter tube assembly 4, lower air chamber in the conducting.Recoil tracheae 6 is arranged on filter cylinder 1 top, relative with the outlet side of Venturi tube 2 and and Venturi tube 2 between the segment distance of being separated by, at the oral area of the tracheae 6 that recoils the recoil shower nozzle is set.Sidewall at clean air cavity 3 is provided with clean gas general export 10.
During real work, the high temperature and high pressure gas that carries dust particle enters by air inlet pipe 12 and filters air cavity 11, in ceramic filter tube assembly 4, finish filtration, purification, clean gas finally imports clean air cavity 3 and also outwards carries by clean gas general export 10 by ceramic filter tube centre bore and Venturi tube 2; And recoil when cleaning, recoil gas enters 2 pairs of ceramic filter tubes of Venturi tube again and carries out back flush from 1 input of recoil tracheae.
The said structure of existing smoke filter, in case earthenware damage for a certain reason or cracked after, flue gas can occur and wear the filter phenomenon and directly enter clean air cavity 3 in the flue gas that then contains dust particle, sneak in the clean gas, subsequent technique and equipment are caused damage, also make output gas can not be up to standard.Must overhaul and clean by the complete equipment hard stop after single earthenware damages, the waste of manpower and materials is very large; And when maintenance, also be difficult to determine to damage the position of earthenware, must every group every to investigate, efficient is very low.
Summary of the invention
It is rear to follow-up purifying air pollution that the applicant can not prevent that for above-mentioned existing smoke filter structure earthenware from damaging; and the shortcomings such as maintenance workload is large; provide a kind of earthenware of smoke filter rational in infrastructure to damage the protection structure; thereby the flue gas that can solve behind the damage earthenware is worn the filter problem, and has reduced greatly maintenance workload.
The technical solution adopted in the present invention is as follows:
A kind of earthenware of smoke filter damages the protection structure, the filter cylinder bottom is for filtering air cavity, top is clean air cavity, filter air inlet pipe and many group ceramic filter tube assemblies are set in the air cavity, the top of every group of ceramic filter tube assembly is provided with Venturi tube, the recoil tracheae passes into from clean air cavity top and relative with the outlet side of Venturi tube, is provided with clean gas general export at the sidewall of clean air cavity; The outlet side of Venturi tube is connected by tube connector with the recoil tracheae; top gas circuit at the recoil tracheae is provided with clean gas and draws bypass and be provided with the protection ball valve, and each is organized clean gas and draws bypass and be communicated with clean air cavity by circulation loop, clean gas intake in the gas.
It is further characterized in that: described clean gas is drawn and is provided with the flue gas inspection sensor in the bypass, controls the keying of described protection ball valve by control circuit.
Beneficial effect of the present invention is as follows:
The present invention has utilized the recoil tracheae gas circuit of existing filter cleverly; the output pipe of each group ceramic filter tube assembly is independent separately; and be provided with detecting sensor and protect valve; after damaging, earthenware seals immediately this road pipeline; the integral body of avoiding producing filter is polluted, thereby has guaranteed filter efficiency and quality.Like this; only need the earthenware of stop grouping to filter; and the earthenware of other groups can normal filtration work; do not need whole equipment to shut down maintenance; only need to overhaul and change the earthenware of this group of cleaning when safeguarding; effectively raise the efficient of maintenance, saved a large amount of human and material resources.
Description of drawings
Fig. 1 is the internal structure cutaway view of existing smoke filter.
Fig. 2 is cutaway view of the present invention.
The specific embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described.
As shown in Figure 2; the present invention has utilized the gas circuit of the recoil tracheae 6 of existing filter cleverly; the outlet side of each Venturi tube 2 is connected by tube connector 5 with recoil tracheae 6 oral areas on top; the recoil tracheae 6 the top gas circuit be provided with clean gas draw bypass and be provided with the protection ball valve 7; clean gas is drawn and is provided with the flue gas inspection sensor in the bypass on each road; the clean gas in each road is drawn bypass and is interconnected by circulation loop in the gas 8, and the clean gas intake 9 of concentrating clean air cavity 3 sidewalls of input to offer.
During real work; the high temperature and high pressure gas that carries dust particle enters by air inlet pipe 12 and filters air cavity 11; in ceramic filter tube assembly 4, finish filtration, purification; clean gas is by ceramic filter tube centre bore and Venturi tube 2; and by tube connector 5 enter the recoil tracheae 6; draw by clean gas that circulation loop 8, clean gas intake 9 import clean air cavity 3 in the protection ball valve 7, gas of bypass, finally outwards carry by clean gas general export 10.
If flue gas occurs after having an earthenware to damage to be worn when filtering phenomenon; being arranged on the clean gas in this road draws detecting sensor in the bypass and can identify immediately that fume amount exceeds standard in the gas; the protection ball valve 7 on this road is closed immediately voluntarily; contaminated gas is enclosed in this road pipeline; and can not enter circulation loop 8 and clean air cavity 3 in the gas; prevent from causing the integral body of filter to pollute, guaranteed filter efficiency and quality.Like this, only need to stop this group earthenware filtration, and the earthenware of other groups can normal filtration work, does not need whole equipment to shut down maintenance.Owing to be provided with many group ceramic filter tube assemblies in each smoke filter, be generally 12～24 groups, the break-off of therefore partly organizing earthenware can't exert an influence.When equipment is available free or during conventional maintenance, shuts down again and change and safeguard that only need maintenance and change the earthenware that cleaning is closed group this moment, effectively raises the efficient of maintenance, saved a large amount of human and material resources.
More than describing is explanation of the invention, is not that limited range of the present invention is referring to claim to the restriction of invention, and in the situation of spirit of the present invention, the present invention can do any type of modification.
Claims (2)
1. the earthenware of a smoke filter damages the protection structure, filter cylinder (1) bottom is for filtering air cavity (11), top is clean air cavity (3), filter air inlet pipe (12) and many group ceramic filter tube assemblies (4) are set in the air cavity (11), the top of every group of ceramic filter tube assembly (4) is provided with Venturi tube (2), recoil tracheae (6) passes into from clean air cavity (3) top and relative with the outlet side of Venturi tube (2), is provided with clean gas general export (10) at the sidewall of clean air cavity (3); It is characterized in that: the outlet side of Venturi tube (2) is connected by tube connector (5) with recoil tracheae (6); be provided with clean gas in the top gas circuit of recoil tracheae (6) and draw bypass and be provided with protection ball valve (7), each is organized clean gas and draws bypass and be communicated with clean air cavity (3) by circulation loop (8), clean gas intake (9) in the gas.
2. the earthenware according to smoke filter claimed in claim 1 damages the protection structure, and it is characterized in that: described clean gas is drawn and is provided with the flue gas inspection sensor in the bypass, controls the keying of described protection ball valve (7) by control circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103185097A CN103055629A (en) | 2011-10-19 | 2011-10-19 | Ceramic tube breakage protection structure of flue gas filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103185097A CN103055629A (en) | 2011-10-19 | 2011-10-19 | Ceramic tube breakage protection structure of flue gas filter |
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| Publication Number | Publication Date |
|---|---|
| CN103055629A true CN103055629A (en) | 2013-04-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011103185097A Pending CN103055629A (en) | 2011-10-19 | 2011-10-19 | Ceramic tube breakage protection structure of flue gas filter |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108525409A (en) * | 2018-06-04 | 2018-09-14 | 中国石油大学(北京) | The determination of failure screen pipe, guard method and the device of filter |
-
2011
- 2011-10-19 CN CN2011103185097A patent/CN103055629A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108525409A (en) * | 2018-06-04 | 2018-09-14 | 中国石油大学(北京) | The determination of failure screen pipe, guard method and the device of filter |
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Application publication date: 20130424 |