Flue gas treatment ceramic filter convenient to blow and clean

Abstract

The utility model provides a flue gas treatment ceramic filter convenient to blow and clean, and belongs to the technical field of float kilns. Comprising a plurality of filter bins connected in series, each filter bin comprises a bottom plate, a top plate and an outer protective frame, the top plate and the bottom plate are fixed to the upper end and the lower end of the outer protective frame respectively, a plurality of gas collecting pipes are fixedly arranged on the bottom plates, a plurality of ceramic filter pipes are arranged on the gas collecting pipes, and openings of the ceramic filter pipes are communicated with the gas collecting pipes; partition plates for separating the adjacent gas collecting pipes are arranged between the top plate and the bottom plate, the ceramic filter pipes on the same gas collecting pipe are separated into one sub-bin chamber through the partition plates, a plurality of gas outlet connecting pipes in one-to-one correspondence with the sub-bin chambers are arranged on the outer protective frame, and the gas collecting pipes are connected with a gas inlet connecting pipe. And the adjacent filtering chambers are connected in a manner that the air outlet connecting pipe of the previous filtering chamber is detachably connected with the air inlet connecting pipe of the next filtering chamber through a hose. The utility model has the advantages of convenient operation.

Description

Technical Field

[0001] The utility model belongs to the technical field of float kilns and relates to a flue gas treatment ceramic filter which is convenient for spraying and cleaning. Background Art

[0002] The waste gas generated by kiln combustion in glass production needs to be desulfurized, denitrated and dusted before it can be discharged in compliance with the emission standards. At present, most flue gas treatment facilities use ceramic filter tube integrated desulfurization, denitration and dust removal systems. It mainly includes smoke coolers, ammonia injection systems, slaked lime storage, weighing and conveying systems, waste storage systems, ceramic filter tubes and injection systems, flue fan systems, etc. The specific process is that the kiln exhaust gas is adjusted to 300-380℃ flue gas through a smoke cooler or boiler, and slaked lime and ammonia are injected and fully mixed, and then enter the ceramic filter tube integrated desulfurization, denitration and dust removal system with the flue gas. Under the action of the ceramic filter tube catalyst, the nitrogen oxides in the flue gas are reduced to nitrogen and water, and the clean and qualified flue gas is sent to the chimney through the induced draft fan to complete the entire desulfurization, denitration and dust removal process.

[0003] The ceramic filter tube integrated desulfurization, denitrification and dust removal system generally has multiple reactor chambers. The core device is the "ceramic filter tube" in the chamber. The dust carried by the flue gas is adsorbed on the surface of the ceramic filter tube. When the dust adsorbed on the filter tube reaches a certain thickness, a spraying device is required to clear the dust adsorbed on the outer surface of the ceramic filter tube into the ash hopper below. If the filter tube dust is not sprayed in time, the filtration resistance will continue to increase, and the filtration speed of the filter tube will decrease, which will affect the working conditions and the life of the filter tube. Generally, each reactor chamber has 18 groups of filter tubes. The traditional spraying method is to blow the 1st to 18th groups of chamber 1# in sequence, and then the 1st to 18th groups of chamber 2# are sprayed in sequence, and the spraying of all chamber filter tubes is completed in sequence.

[0004] Existing technical problems:

[0005] According to this spraying method, the filter tube of a chamber is not functioning during the spraying. When the system is spraying, the environmental protection data of sulfur dioxide and nitrogen oxides at the chimney outlet will increase. There is a risk of exceeding the emission standard of flue gas pollutants during the spraying. Utility Model Content

[0006] The purpose of the utility model is to provide a flue gas treatment ceramic filter which is convenient for spraying and cleaning in view of the above-mentioned problems existing in the prior art. The technical problem to be solved by the utility model is how to improve the portability of spraying and cleaning the ceramic filter tube.

[0007] The purpose of the utility model can be achieved through the following technical solutions: a flue gas treatment ceramic filter that is easy to spray and clean, characterized in that it comprises a plurality of filter chambers connected in series, the filter chambers comprising a bottom plate, a top plate and an outer protective frame, the top plate and the bottom plate are respectively fixed on the upper and lower ends of the outer protective frame, a plurality of gas collecting pipes are fixedly arranged on the bottom plate, a plurality of ceramic filter tubes are arranged on the gas collecting pipes, the openings of the ceramic filter tubes are connected to the gas collecting pipes, a partition is arranged between the top plate and the bottom plate to separate adjacent gas collecting pipes, the partition separates the ceramic filter tubes on the same gas collecting pipe into a sub-chamber, a plurality of air outlet pipes corresponding to each sub-chamber are arranged on the outer protective frame, the air collecting pipe is connected to an air inlet pipe, and the connection method between adjacent filter chambers is that the air outlet pipe of the previous filter chamber and the air inlet pipe of the subsequent filter chamber are detachably connected through a hose.

[0008] In comparison, this solution divides the same filter chamber into multiple sub-chambers through partitions. At the same time, each sub-chamber corresponds to an air inlet pipe and an air outlet pipe. The filter chambers are connected in series. Under full-load working conditions, all ceramic filter tubes are used for filtering, that is, the air flow to be filtered enters the air collecting pipe through the air inlet pipe, and the air collecting pipe is divided into each ceramic filter tube. The air flow filtered by the ceramic filter tube enters the sub-chamber and is discharged from the air outlet pipe. The discharged air flow continues to enter the next filter chamber. When spray cleaning is required, the air inlet pipe of a sub-chamber of the front filter chamber and the corresponding air outlet pipe at the end filter chamber are disconnected, and the air inlet pipe is inserted into the dust collection liquid. , connect the air outlet pipe to the air outlet end of an air pump, and the clean air flow will reversely blow the ceramic filter tube, enter the air collecting pipe from the center hole of the ceramic filter tube, and then enter the sub-chamber of another adjacent filter chamber. In this way, some sub-chambers can be in a reverse blowing cleaning state, while other sub-chambers are still in working state, and the reverse blowing cleaning of each sub-chamber can be completed one by one. In comparison, the traditional method requires suspending all the ceramic filter tubes of one of the filter chambers, and there are adjustments to the pipelines, and the filtering capacity is seriously reduced. In this solution, each filter chamber is working normally, but a small number of the ceramic filter tubes are in a backwash state, and the dismantling and adjustment of the pipelines are very small. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 This is an exploded view of a single filter chamber of the flue gas treatment ceramic filter.

[0010] Figure 2 This is a cross-sectional view of a single filter chamber of the flue gas treatment ceramic filter.

[0011] Figure 3 This is a diagram of a series of filter chambers.

[0012] In the figure, 1. filter chamber; 2. bottom plate; 3. top plate; 4. outer protective frame; 5. gas collecting pipe; 6. ceramic filter tube; 7. partition; 8. sub-chamber; 9. air outlet pipe; 10. air inlet pipe; 11. hose. DETAILED DESCRIPTION

[0013] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0014] like Figures 1 to 3 The ceramic filter shown includes a plurality of filter chambers 1 connected in series, the filter chamber 1 including a bottom plate 2, a top plate 3 and an outer protective frame 4, the top plate 3 and the bottom plate 2 are respectively fixed at the upper and lower ends of the outer protective frame 4, a plurality of gas collecting pipes 5 are fixedly arranged on the bottom plate 2, a plurality of ceramic filter tubes 6 are arranged on the gas collecting pipes 5, the openings of the ceramic filter tubes 6 are connected to the gas collecting pipes 5, a partition plate 7 is arranged between the top plate 3 and the bottom plate 2 to separate adjacent gas collecting pipes 5, the partition plate 7 separates each ceramic filter tube 6 on the same gas collecting pipe 5 into a sub-chamber 8, a plurality of air outlet pipes 9 corresponding to each sub-chamber 8 are arranged on the outer protective frame 4, the air collecting pipe 5 is connected to an air inlet pipe 10, and the connection method between adjacent filter chambers 1 is: the air outlet pipe 9 of the previous filter chamber 1 and the air inlet pipe 10 of the next filter chamber 1 are detachably connected through a hose 11.

[0015] In comparison, the present solution divides the same filter chamber 1 into a plurality of sub-chambers 8 by means of a partition 7. At the same time, each sub-chamber 8 corresponds to an air inlet pipe 10 and an air outlet pipe 9. The filter chambers 1 are connected in series. Under full-load working conditions, all ceramic filter tubes 6 are used for filtering, that is, the air flow to be filtered enters the air collecting pipe 5 through the air inlet pipe 10, and the air collecting pipe 5 is branched to each ceramic filter tube 6. The air flow filtered by the ceramic filter tube 6 enters the sub-chamber 8 and is discharged from the air outlet pipe 9. The discharged air flow continues to enter the next filter chamber 1. When spray cleaning is required, the air inlet pipe 10 of a sub-chamber 8 of the front filter chamber 1 and the air outlet pipe 9 corresponding to it at the end filter chamber 1 are disconnected, and the air inlet pipe 10 is connected. Insert it into the dust collecting liquid, connect the air outlet pipe 9 to the air outlet end of an air pump, and the clean air flow will reversely blow the ceramic filter tube 6, enter the air collecting pipe 5 from the center hole of the ceramic filter tube 6, and then enter the sub-chamber 8 of another adjacent filter chamber 1. In this way, some sub-chambers 8 can be in a reverse blowing cleaning state, while other sub-chambers 8 are still in working state, and the reverse blowing cleaning of each sub-chamber 8 can be completed one by one. In comparison, the traditional method needs to suspend all the ceramic filter tubes 6 of one of the filter chambers 1, and there is adjustment of the pipeline, and the filtering capacity declines more seriously. In this scheme, each filter chamber 1 is working normally, but a small part of the ceramic filter tubes 6 are in the backwash state, and the dismantling and adjustment of the pipeline is very small.

[0016] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A flue gas treatment ceramic filter that is easy to spray and clean, characterized in that: The invention comprises a plurality of filter chambers (1) connected in series, wherein the filter chambers (1) comprise a bottom plate (2), a top plate (3) and an outer protective frame (4), wherein the top plate (3) and the bottom plate (2) are respectively fixed to the upper and lower ends of the outer protective frame (4), wherein a plurality of gas collecting pipes (5) are fixedly arranged on the bottom plate (2), wherein a plurality of ceramic filter pipes (6) are arranged on the gas collecting pipes (5), wherein the openings of the ceramic filter pipes (6) are connected to the gas collecting pipes (5), and a spacer for separating adjacent gas collecting pipes (5) is arranged between the top plate (3) and the bottom plate (2). A partition (7) is provided, wherein the partition (7) separates each ceramic filter tube (6) on the same air collecting pipe (5) into a sub-chamber (8); a plurality of air outlet pipes (9) corresponding to each sub-chamber (8) are arranged on the outer protective frame (4); the air collecting pipe (5) is connected to an air inlet pipe (10); and the connection between adjacent filter chambers (1) is as follows: the air outlet pipe (9) of the preceding filter chamber (1) and the air inlet pipe (10) of the succeeding filter chamber (1) are detachably connected via a hose (11).

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