CN217410115U - Filtering device for reducing particles in flue gas abraded by coal-fired unit catalyst - Google Patents
Filtering device for reducing particles in flue gas abraded by coal-fired unit catalyst Download PDFInfo
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- CN217410115U CN217410115U CN202122173104.0U CN202122173104U CN217410115U CN 217410115 U CN217410115 U CN 217410115U CN 202122173104 U CN202122173104 U CN 202122173104U CN 217410115 U CN217410115 U CN 217410115U
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Abstract
The utility model relates to a reduce filter equipment of granule in flue gas of coal-fired unit catalyst wearing and tearing, including boiler, economizer, denitrification facility and catalytic unit, be equipped with the filter unit in the pipeline of denitrification facility's entrance, the filter unit includes that first filter screen, mesh are less than the second filter screen of first filter screen, and first filter screen slope is fixed in the pipeline of denitrification facility's entrance, and the second filter screen is established in the low reaches of first filter screen and perpendicular to pipeline fixed. Therefore, the smoke at the outlet of the boiler does not vertically pass through the filter screen, large particle ash in the smoke obliquely collides with the filter screen, and the large impact on the filter screen is avoided, so that the service life of the filter screen is effectively prolonged, the filtering area of the filtering device is increased, and the filtering efficiency of the filtering device is improved.
Description
Technical Field
The utility model relates to a dust removal technical field, more specifically say, relate to a filter equipment of granule in flue gas that reduces coal-fired unit catalyst wearing and tearing.
Background
In the prior flue gas denitration technology, most of denitration systems of coal-fired units adopt a selective catalytic reduction method, ammonia gas is sprayed into a flue, and the ammonia gas reacts with the nitric oxide in the flue gas under the action of a catalyst to produce nitrogen and water, wherein in the denitration systems of the coal-fired units, the catalyst is a core part, and the catalyst is expensive and generally has a service life of only about 3 years, so the cost of the catalyst accounts for a large proportion in the investment of the whole system, the anti-blocking and anti-abrasion performance of the catalyst is a key for influencing the service life and ensuring the long-term safe and stable operation of the denitration systems, however, large particle ash is generally generated in the flue gas generated by a coal-fired boiler, the catalyst is inevitably abraded, and the larger the smoke dust amount is, the more the abrasion is serious, and still cause the flue to block up easily, in case the jam phenomenon can direct deNOx systems shut down, for solving this technical problem, technical personnel in the field generally set up the large granule ash in the metal mesh of perpendicular to pipeline and filtered the flue gas between the inlet duct of the pipeline of giving vent to anger of boiler and denitrification facility, but the screen cloth filter area of this kind of form is less, and because large granule ash is on direct perpendicular striking screen cloth, it is great to the impact of screen cloth, can cause the damage of screen cloth for a long time, thereby influence its filter effect and life.
Therefore, how to solve current flue gas and filter the large granule ash in the flue gas through set up the metal mesh screen of perpendicular to pipeline between the pipeline of giving vent to anger of boiler and denitrification facility's inlet duct, the screen cloth filter area of this kind of form is less, and because large granule ash is on direct perpendicular striking to the screen cloth, the impact to the screen cloth is great, can cause the damage of screen cloth for a long time to influence its filter effect and life's problem, become the important technical problem that technical personnel in this field will solve.
SUMMERY OF THE UTILITY MODEL
The utility model provides a reduce filter equipment of granule in flue gas of coal-fired unit catalyst wearing and tearing to solve current flue gas and filter the large granule ash in the flue gas through the metal mesh who sets up the perpendicular to pipeline between the inlet duct of the pipeline of giving vent to anger of boiler and denitrification facility, the screen cloth filter area of this kind of form is less, and because large granule ash is on direct perpendicular striking the screen cloth, it is great to the impact of screen cloth, can cause the damage of screen cloth for a long time, thereby influence its filter effect and life's problem.
The utility model discloses a filter equipment of granule in flue gas of reduction coal-fired unit catalyst wearing and tearing adopts following technical scheme:
the utility model provides a reduce filter equipment of granule in flue gas of coal-fired unit catalyst wearing and tearing, includes boiler, economizer, denitrification facility and catalytic unit, the afterbody of boiler is provided with the economizer, the export lower part of economizer sets up economizer export ash bucket, the exit linkage of economizer denitrification facility's entry, denitrification facility's exit linkage catalytic unit, be equipped with filter unit in the pipeline of denitrification facility's entry, filter unit includes that first filter screen, mesh are less than the second filter screen of first filter screen, first filter screen slope is fixed in the pipeline of denitrification facility's entry, the second filter screen is established the low reaches and the perpendicular to of first filter screen the pipeline is fixed.
Preferably, the periphery of the first filter screen and the second filter screen is provided with a steel frame, and the steel frame is fixed in the pipeline.
Preferably, the denitration device further comprises a denitration inlet ash bucket and a bin pump, wherein the denitration inlet ash bucket is arranged on the lower portion of the inlet of the denitration device, the denitration inlet ash bucket is connected with the bin pump, and the outlet of the bin pump is connected with an ash conveying pipeline.
The utility model has the advantages that: the utility model provides a reduce filter equipment of granule in flue gas of coal-fired unit catalyst wearing and tearing, first filter screen slope is fixed in the pipeline of denitrification facility entrance, make boiler outlet flue gas not pass through the filter screen perpendicularly, wherein large granule ash strikes the filter screen on aslope, can not cause very big impact to the filter screen, thereby the life of filter screen has effectively been prolonged, and filter equipment's filter area has been increased, the filter efficiency is improved, the impact force of the flue gas through first filter screen has reduced and has been used for filtering little particulate matter through the second filter screen of following again, filter more thoroughly.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and together with the description, serve to explain the principles of the application.
FIG. 1 is a schematic structural view of a coal-fired unit in an embodiment of the present invention;
FIG. 2 is a schematic view of the structure of the filtering device disposed in the pipeline according to the embodiment of the present invention;
fig. 3 is a schematic view of a second filter screen according to an embodiment of the present invention.
In the figure:
1-boiler, 2-economizer, 3-economizer outlet ash hopper, 4-filtering unit, 5-denitration device, 6-denitration inlet ash hopper, 7-bin pump, 8-catalytic device, 9-ash conveying pipeline, 10-pipeline, 11-first filter screen, 12-second filter screen and 13-steel framework.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Hereinafter, embodiments will be described with reference to the drawings. The embodiments described below are not intended to limit the scope of the present invention described in the claims. Further, the entire contents of the configurations shown in the following embodiments are not limited to those necessary as a solution of the invention described in the claims.
Referring to fig. 1-3, the present embodiment provides a filtering apparatus for reducing particles in flue gas abraded by a catalyst of a coal-fired unit, as shown in fig. 1, the filtering apparatus comprises a boiler 1, an economizer 2, a denitration device 5 and a catalytic device 8, the economizer 2 is arranged at the tail of the boiler 1, an economizer outlet ash hopper 3 is arranged at the lower part of the outlet of the economizer 2, the outlet of the economizer 2 is connected with the inlet of the denitration device 5, the outlet of the denitration device 5 is connected with the catalytic device 8, a filtering unit 4 is arranged in a pipeline 10 at the inlet of the denitration device 5, as shown in fig. 2, the filtering unit 4 comprises a first filter screen 11 and a second filter screen 12 with a mesh smaller than that of the first filter screen 11, the first filter screen 11 is obliquely fixed in the pipeline 10 at the inlet of the denitration device 5, the second filter screen 12 is arranged at the downstream of the first filter screen 11 and fixed perpendicular to the pipeline 10, and flue gas is discharged from the boiler 1, get into economizer 2, then enter into denitrification facility 5 through filter equipment, then reentrant catalytic unit 8, set up filter unit 4 in the pipeline 10 of denitrification facility 5's entrance, can be with the ash water conservancy diversion of big granule to the lower part of flue through first filter screen 11, along with the flue gas to 5 direction movements of denitrification facility, final deposit is in denitration entry ash bucket 6, and the automatic deposit of whereabouts is in denitration entry ash bucket 6 behind the ash of little granule in the flue gas through second filter screen 12.
It should be noted that, first filter screen 11 is fixed in the pipeline 10 of 5 entrances of denitrification facility in the slope, make boiler 1 export flue gas not pass through the filter screen perpendicularly, wherein large granule ash strikes on the filter screen in the slope, can not cause very big impact to the filter screen, thereby the life of filter screen has effectively been prolonged, and filter equipment's filter area has been increased, its filtration efficiency has been improved, the impact force of the flue gas through first filter screen 11 has been reduced and has been used for filtering little particulate matter through second filter screen 12 in the perpendicular way again, filter more thoroughly, particulate matter in the flue gas to the wearing and tearing of catalyst so can be avoided, the life of catalyst is prolonged.
Preferably, as shown in fig. 3, in order to fix and stabilize the filtering unit 4, the steel frame 13 is disposed on the outer periphery of the first filter screen 11 and the second filter screen 12, and the steel frame 13 is fixed in the pipeline 10, so that the structure is simple and stable.
So set up, solved current flue gas and filtered the large granule ash in the flue gas through the metal mesh who sets up the perpendicular to pipeline between the pipeline of giving vent to anger of boiler and denitrification facility's inlet duct, the screen cloth filter area of this kind of form is less, moreover because large granule ash is on direct perpendicular striking screen cloth, great to the impact of screen cloth, can cause the damage of screen cloth for a long time to influence its filter effect and life's problem.
In the preferred scheme of this embodiment, coal-fired unit still includes denitration entry ash bucket 6 and barn pump 7, and denitration entry ash bucket 6 is established in the entry lower part of denitrification facility 5, and denitration entry ash bucket 6 connects barn pump 7, and the exit linkage ash conveying pipeline 9 of barn pump 7.
To sum up, 11 slopes of first filter screen are fixed in the pipeline 10 of 5 entrances of denitrification facility, make 1 export flue gas of boiler pass through the filter screen not vertically, large granule ash wherein strikes the filter screen aslope on, can not cause very big impact to the filter screen, thereby the life of filter screen has effectively been prolonged, and filter equipment's filter area has been increased, the filtration efficiency is improved, the impact force of the flue gas through first filter screen 11 has reduced the perpendicular second filter screen 12 that leads to that is used for filtering little particulate matter again, it is more thorough to filter.
It should be noted that the terms "first," "second," and the like, as used herein, are not limited to a specific order, but are used merely to distinguish one element or function from another; the term "downstream" is used herein only to indicate the next position in the flow line; the terms "upper" and "lower" are used when referring to the arrangement as shown in FIG. 1.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
It is understood that the same or similar parts in the above embodiments may be mutually referred to, and the same or similar parts in other embodiments may be referred to for the content which is not described in detail in some embodiments.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (3)
1. The utility model provides a filter equipment of granule in flue gas of coal-fired unit catalyst wearing and tearing reduces, includes boiler, economizer, denitrification facility and catalytic device, the afterbody of boiler is provided with the economizer, the export lower part of economizer sets up economizer export ash bucket, the exit linkage of economizer denitrification facility's entry, denitrification facility's exit linkage catalytic device, a serial communication port, be equipped with filter unit in the pipeline of denitrification facility's entry, filter unit includes that first filter screen, mesh are less than the second filter screen of first filter screen, first filter screen slope is fixed in the pipeline of denitrification facility's entry, the second filter screen is established the low reaches and the perpendicular to of first filter screen the pipeline is fixed.
2. The filter arrangement for reducing the number of particles in flue gas from the catalyst attrition of a coal burning unit of claim 1 wherein said first and second screens have steel frames around their outer circumference, said steel frames being secured within said duct.
3. The filter device for reducing the particles in the flue gas abraded by the catalyst of the coal-fired unit according to claim 1, further comprising a denitration inlet ash bucket and a bin pump, wherein the denitration inlet ash bucket is arranged at the lower part of an inlet of the denitration device, the denitration inlet ash bucket is connected with the bin pump, and an outlet of the bin pump is connected with an ash conveying pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122173104.0U CN217410115U (en) | 2021-09-09 | 2021-09-09 | Filtering device for reducing particles in flue gas abraded by coal-fired unit catalyst |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122173104.0U CN217410115U (en) | 2021-09-09 | 2021-09-09 | Filtering device for reducing particles in flue gas abraded by coal-fired unit catalyst |
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| Publication Number | Publication Date |
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| CN217410115U true CN217410115U (en) | 2022-09-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202122173104.0U Active CN217410115U (en) | 2021-09-09 | 2021-09-09 | Filtering device for reducing particles in flue gas abraded by coal-fired unit catalyst |
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| CN (1) | CN217410115U (en) |
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2021
- 2021-09-09 CN CN202122173104.0U patent/CN217410115U/en active Active
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