Fine dust removal and embedded catalytic module catalytic composite integrated device

Abstract

The utility model relates to the technical field of catalytic dust removal equipment, in particular to a fine dust removal and embedded catalytic module catalytic composite integrated device. The tubesheet is spanned in the dust removal bin and divides the dust removal bin into an upper part and a lower part, so that flue gas introduced from the lower side of the dust removal bin can enter the upper side of the dust removal bin only through tubesheet holes formed in the surface of the tubesheet and then is discharged; the filtering unit is fixedly mounted in the pattern plate hole; the device further comprises a mounting basket. An opening in the upper end of the mounting basket is sealed by the net cover, the lower end of the mounting basket is inserted into the filtering unit and is attached to the inner wall of the filtering unit, and the bottom surface of the mounting basket is provided with meshes for airflow to pass through; and a catalyst is placed in the mounting basket and is used for realizing catalytic purification of flue gas. The device can be quickly arranged and used on the basis of an original dust removal device, so that the original dust removal device with a single function has the flue gas catalytic purification capability, and the flue gas purification treatment efficiency is quickly and effectively improved at low cost.

Description

TECHNICAL FIELD

[0001] The utility model relates to catalytic dust removal equipment technical field especially relates to fine dust removal and embedded catalytic module catalytic composite integration device. BACKGROUND

[0002] The dust removal denitration desulfurization integration technology appearing in the waste gas treatment field can greatly reduce the land occupation area of equipment and the later operation cost, so is recognized by the industry and many owners.

[0003] Metal filter cartridge + honeycomb catalytic layer: one or two layers of catalytic layer are arranged on the metal filter cartridge dust removal bin. This way needs to set up a separate catalyst installation mechanism, which will increase the volume of the dust removal bin; when the metal filter cartridge bag breaks, the dust will block the holes of the upper layer of catalyst on the metal membrane, which is very difficult to handle.

[0004] Catalytic metal filter cartridge, catalytic ceramic fiber filter cartridge and catalytic cloth bag: denitration catalyst is implanted on the surface or inside of the filter substrate, but the product becomes hazardous waste after reaching the service life, it is difficult to separate the catalyst from the filter substrate, increases the cost of hazardous waste treatment, is not conducive to environmental friendliness, and the implantation of catalyst process is complicated, the load and shedding rate need to be controlled; when the resistance of the filter material increases or the activity of the catalyst decreases, the whole filter product needs to be replaced, increasing the use cost; the filter substrate itself will contact with dust, and when it contacts with a large amount of water vapor or condensed water, soluble harmful substances in the dust will penetrate into the substrate and affect the catalyst, reducing the service life of the catalyst.

[0005] Cloth bag + denitration device: a denitration reaction bin is separately arranged behind the cloth bag dust removal bin to install catalyst, which increases the initial environmental protection investment and the land occupation area of environmental protection facilities.

[0006] It can be seen that the above-mentioned common dust removal denitration desulfurization integration technology has many drawbacks such as the need for larger installation space, difficulty in harmless treatment in later period, short service life, etc. Therefore, it is of positive significance to design and provide a dust removal denitration desulfurization integration scheme that is convenient to install and does not affect the difficulty of recycling treatment in later period, and ensures the service life of the catalyst.

[0007] Therefore, the utility model provides fine dust removal and embedded catalytic module catalytic composite integration device. Utility model content

[0008] In order to solve the problems of the traditional dust removal, denitration and desulfurization integrated technology, such as the need for larger installation space, difficulty in harmless treatment in later period, short service life and the like, the utility model provides a kind of catalyst installation module suitable for metal filter cartridge, ceramic fiber filter cartridge, cloth bag filter cartridge, which does not need to additionally add flue gas treatment device, only needs to install catalytic module on original equipment, not only avoids high investment in early stage, but also the split design can ensure the convenience of catalyst replacement and later recovery treatment.

[0009] The utility model provides a kind of fine dust removal and embedded catalytic module catalytic composite integrated device, including dust removal bin, flower board and the pulse control instrument for spraying compressed air to clean filter unit;The flower board crosses in the inside of dust removal bin and divides dust removal bin into two parts, so that the flue gas that passes from the lower side of dust removal bin can only enter the upper side of dust removal bin after being opened to the flower board hole on the surface of flower board and then be discharged;The filter unit is fixedly installed in the flower board hole;It further includes installation basket;

[0010] The upper end opening of the installation basket is closed by a net cover, the lower end is inserted into the inside of the filter unit and is attached to the inner wall of the filter unit, and the bottom surface is provided with a mesh hole for airflow to pass through;The installation basket is placed with a catalyst to realize catalytic purification of flue gas.

[0011] Preferably, the outer side of the installation basket extends outward by a limit ring near one end of the opening, and the outer diameter of the limit ring is greater than the opening diameter of the filter unit.

[0012] Preferably, the filter unit is any one of a cloth bag, a metal filter bag or a ceramic fiber tube, and the main body structure of the installation basket is cylindrical in shape corresponding to the internal shape of the filter unit.

[0013] Preferably, the jet pipe controlled by the pulse control instrument is in communication and fixed with the installation basket through the external thread of the end of the flow guide pipe;The lower end of the flow guide pipe penetrates through the entire installation basket until it is flush with the outer bottom surface of the installation basket.

[0014] Preferably, the jet pipe controlled by the pulse control instrument extends downward with a needle-shaped extension end, the extension end penetrates through the rubber plug of the end of the flow guide pipe and communicates with the inside of the flow guide pipe, and the outer wall of the extension end is provided with anti-slip lines.

[0015] Preferably, the catalyst is in the shape of honeycomb coal with a limit hole in the center for the flow guide pipe to penetrate through.

[0016] Preferably, the limit ring is installed below the working surface of the flower board with a ceramic fiber gasket.

[0017] Preferably, the plurality of honeycomb holes are coated with a catalyst coating, and the catalyst coating is one or a combination of an SCR denitration catalyst, a CO catalyst, and a VOCs catalyst.

[0018] Preferably, the lower end of the flow guide pipe is a trumpet mouth.

[0019] Compared with the traditional dust removal, denitration and desulfurization integrated technology, the utility model has the following advantages:

[0020] 1. The utility model discloses a mounting basket, which is inserted into the filter unit to fix and install the catalyst in the filter unit. The split or separate design makes the filter unit and the catalyst combinable and facilitates the replacement of the filter unit and the catalyst in the later period, thereby reducing the use cost. In addition, the catalyst in the mounting basket can be independently recycled, which does not increase the cost of hazardous waste treatment and protects the environment.

[0021] 2. The mounting basket designed by the utility model can perfectly adapt to cylindrical metal filter cartridges, ceramic fiber tubes and cloth bags. During use, only a simple insertion action is needed, and no additional construction cost is required, so the mounting basket can be easily popularized and used to modify the existing dust remover.

[0022] 3. The mounting basket in the utility model can serve as a bridge between the external air injection pipe and the filter unit. The flow guide pipe in the mounting basket can better and centrally guide the compressed air from the outside to the inside of various filter units, thereby enhancing the dust injection effect and strengthening the cleaning capacity of the filter unit. At the same time, the flow guide pipe can also avoid the direct injection of compressed air to the catalyst, so that the high-temperature flue gas and the cold compressed air do not alternately flush the catalyst, thereby ensuring the structural strength and service life of the catalyst. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 FIG. 1 is a structural schematic diagram of the mounting basket of the utility model;

[0024] Figure 2 FIG. 2 is a bottom view of the mounting basket of the utility model;

[0025] Figure 3 FIG. 3 is a schematic diagram of the installation structure of the mounting basket and the dust removal bin of the utility model;

[0026] Figure 4 FIG. 4 is a schematic diagram of the flue gas flow direction of the utility model;

[0027] Figure 5 FIG. 5 is a schematic diagram of the catalyst structure of the utility model;

[0028] Figure 6 FIG. 6 is a schematic diagram of the air injection pipe and the flow guide pipe butt joint structure in the second embodiment of the utility model; and

[0029] In the figure: 1 dust removal bin, 2 flower plate, 201 flower plate hole, 3 filter unit, 4 installation basket, 401 net cover, 402 mesh, 403 limiting ring, 4031 ceramic fiber gasket, 404 flow guide pipe, 4041 external thread, 4042 horn mouth, 5 catalyst, 501 limiting hole, 502 honeycomb hole, 6 air jet pipe, 7 rubber plug, 8 anti-skid pattern. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0031] Embodiment one:

[0032] Referring to Figures 1-3 , 5 The utility model provides a fine dust removal and embedded catalytic module catalytic composite integrated device, including dust removal bin 1, flower plate 2 and be used for spraying compressed air to clean filter unit 3's pulse control appearance;The flower plate 2 is across in the inside of dust removal bin 1 and divides dust removal bin 1 into two parts, make the flue gas that from dust removal bin 1 downside passes in only enter dust removal bin 1 upside after being set up the flower plate hole 201 of flower plate 2 surface and then discharge;The filter unit 3 is fixedly installed in the flower plate hole 201;Still include installation basket 4;

[0033] The upper end opening of the installation basket 4 is closed by the net cover 401, the lower end is inserted into the inside of the filter unit 3 and is attached to the inner wall of the filter unit 3, and the bottom surface is provided with the mesh 402 for airflow to pass through;The catalyst 5 is placed in the installation basket 4 to realize the catalytic purification of flue gas.

[0034] The limiting ring 403 is extended outward from one end of the outer side of the installation basket 4 close to the opening, and the outer diameter of the limiting ring 403 is greater than the opening diameter of the filter unit 3.

[0035] The filter unit 3 is any one of a cloth bag, a metal filter bag and a ceramic fiber pipe;The main body structure of the installation basket 4 is provided in a cylindrical shape corresponding to the internal shape of the filter unit 3.

[0036] The air jet pipe 6 controlled by the pulse control appearance is communicated and fixed through the external thread 4041 of the end portion of the flow guide pipe 404 between the installation basket 4;The lower end of the flow guide pipe 404 penetrates through the entire installation basket 4 until it is flush with the outer bottom surface of the installation basket 4.

[0037] The catalyst 5 is in the shape of honeycomb coal and has a limiting hole 501 in the center for the flow guide pipe 404 to penetrate.

[0038] The limiting ring 403 is installed below the working surface of the flower plate 2 and is provided with a ceramic fiber gasket 4031.

[0039] The honeycomb holes 502 of the plurality of catalysts 5 are coated with a catalyst 5 coating, which is a combination of one or more of an SCR denitration catalyst, a CO catalyst, and a VOCs catalyst.

[0040] The lower end of the flow guide pipe 404 is a trumpet-shaped opening 4042.

[0041] The engineer aligns the lower port of the installation basket 4 with the filter unit 3 installed in the flower plate hole 201 on the surface of the flower plate 2, and then inserts the installation basket 4 into the upper end opening of the filter unit 3. During the insertion process, the limiting ring 403 outside the upper end opening of the installation basket 4 will prompt that the insertion has reached the right position by rubbing against the upper surface of the flower plate 2. Since the filter unit 3 is a common bag filter, metal filter bag, or ceramic fiber tube in the prior art, most of them are cylindrical, so the lower end of the installation basket 4, which is also cylindrical in shape, can be inserted into the upper end opening of the filter unit 3 without any obstacles, and the outside of the installation basket 4 is guaranteed to fit as closely as possible with the inner wall of the filter unit 3 through pre-dimensioning, so that only the flue gas rising from the lower end can pass through the honeycomb holes 502 inside the catalyst 5 to reach the upper side of the flower plate 2.

[0042] In addition, a flow guide pipe 404 is also provided in the installation basket 4, the upper end of which is threadedly connected to the jet pipe 6, and the lower end is trumpet-shaped and extends to the outer bottom surface of the installation basket 4. The flow guide pipe 404 has at least the following four functions in this embodiment:

[0043] First: as an extension of the jet pipe 6, compressed air is introduced. When the dust and other solid impurities in the flue gas gradually accumulate on the outer surface of the filter unit 3 due to the filtering resistance of the filter unit 3, it will inevitably directly affect the filtering efficiency of the filter unit 3. Therefore, in order to ensure that the filtering efficiency of the filter unit 3 is not affected, in the prior art, an external air source is often controlled by a pulse control instrument to control the on-off of the external air source, and then compressed air is introduced into the jet pipe 6. The compressed air is guided by the jet pipe 6 and is injected into the inside of the filter unit 3 from the upper end opening of the filter unit 3, thereby blowing or shaking off the impurities on the surface of the filter unit 3 from the inside to the outside, and dredging the filter hole to restore its filtering capacity and efficiency (the above-mentioned pulse control instrument, the control mode and specific structure of the jet pipe 6 are all prior art, and will not be described in detail here). But at this time, since the installation basket 4 is inserted between the jet pipe 6 and the filter unit 3, the installation basket 4 will inevitably block or weaken the injection of compressed air, which is not conducive to the self-cleaning of the filter unit 3. Therefore, we introduce the design of the flow guide pipe 404, which can directly introduce the compressed air in the jet pipe 6 through the installation basket 4 into the inside of the filter unit 3. Not only does it avoid the blockage of the installation basket 4 and the catalyst 5 in the installation basket 4 to the compressed air, but also compared with the prior art, it makes the introduction of compressed air more concentrated and less wasteful, and strengthens the cleaning ability of compressed air to the filter unit 3. Further, the design of the trumpet mouth 4042 at the end of the flow guide pipe 404 not only reduces the pipe vibration, but also makes the compressed air diffuse to all directions, further strengthening the cleaning ability and effect of the compressed air.

[0044] It should be noted that the existing pulse control instrument can automatically control the on-off of the jet pipe 6, so the person skilled in the art does not need to worry that the purified flue gas will flow into the jet pipe 6 from the lower end of the flow guide pipe 404.

[0045] Second: cooperate with the limiting ring 403 and the jet pipe 6 to realize the stable installation of the installation basket 4. As mentioned above, the installation basket 4 is installed at the opening of the filter unit 3 through a simple plug-in action. In this process, if only the self-weight of the installation basket 4 and the catalyst 5 and the friction between the installation basket 4 and the filter unit 3 are relied on, it is obviously impossible to maintain stability in the process of impact of the flue gas with a certain flow rate and pressure and compressed gas. Therefore, when the upper end of the flow guide pipe 404 is fixedly connected with the jet pipe 6 through the external thread 4041, the jet pipe 6 will give the installation basket 4 a reverse extrusion force, that is, the installation basket 4 is pressed towards the surface of the flower plate 2. And because the limiting ring 403 on the installation basket 4 will be in contact with the flower plate 2, the installation basket 4 can be stably installed at the opening of the filter unit 3 under the limiting of the limiting ring 403 and the fixing and pressing of the flow guide pipe 404, thereby effectively ensuring the stable operation of the entire dust removal and catalysis integrated scheme.

[0046] In addition, the guide pipe 404 presses the reinforced limiting ring 403 and the flower plate 2, and at the same time, the ceramic fiber gasket 4031 between the limiting ring 403 and the flower plate 2 is also pressed tightly, thereby, the sealing effect of the ceramic fiber gasket 4031 below the limiting ring 403 is also strengthened, and the smoke at the lower end of the flower plate 2 is prevented from escaping to the upper side of the flower plate 2 through the gap between the outer wall of the installation basket 4 and the filter unit 3 without passing through the honeycomb hole 502 in the catalyst 5, thereby avoiding the failure of catalytic purification.

[0047] Third: protect the catalyst 5. It is well known that the flue gas has a certain temperature, that is, the flue gas is hot, and the compressed air is cold. When the flue gas below and the compressed air above repeatedly cold and hot flush the catalyst 5, not only the strength of the catalyst 5 is damaged and easily falls off, but also the activity of the catalyst 5 is reduced and the service life is shortened. The introduction of the guide pipe 404 perfectly avoids the above problems, by directly introducing the compressed air into the filter unit 3, avoiding the direct flushing of the compressed air to the catalyst 5, and ensuring the use strength and life of the catalyst 5.

[0048] Fourth: fix the catalyst 5. Due to the limitation of the production process equipment of the coated catalyst 5, the catalyst 5 around is often not coated with catalyst 5 coating, only the honeycomb hole 502 is coated with catalyst 5 coating; therefore, the setting of the guide pipe 404 can cooperate with the limiting hole 501 in the center of the catalyst 5 to firmly fix the catalyst 5 in the inner center of the installation basket 4, so that it will not deviate in the horizontal direction, and ensure that the side wall of the catalyst 5 and the inner wall of the installation basket 4 are always in close contact, preventing the flue gas from moving upward through the gap between the installation basket 4 and the outer wall of the catalyst 5 without passing through the honeycomb hole 502. Thus, the gas catalytic purification effect is ensured.

[0049] Thus, as shown in Figure 4 When the flue gas is introduced from the lower end of the dust removal bin 1, it will be first purified by the filter unit 3. The filtered flue gas entering the filter unit 3 will be forced to enter the honeycomb hole 502 of the catalyst 5 from the mesh 402 at the bottom of the installation basket 4 due to the blockage of the ceramic fiber gasket 4031, the close contact of the catalyst 5 and the inner wall of the installation basket 4, and the closure of the jet pipe 6, and the SCR denitration catalyst, CO catalyst and VOCs catalyst coated in the honeycomb hole 502 will catalytically purify the rising flue gas. The purified flue gas passes through the mesh cover 401 and enters the upper side of the flower plate 2, and is discharged from the upper side of the dust removal bin 1.

[0050] When the filtering capacity of the filter unit 3 decreases, the pulse control instrument will control the external air source to introduce compressed air into the dust removal bin 1, and the compressed air will be guided by the jet pipe 6 and the guide pipe 404 to spray into the inside of the filter unit 3, thereby realizing the self-cleaning of the filter unit 3.

[0051] When the catalyst 5 needs to be replaced or the installation basket 4 needs to be disassembled, only the installation basket 4 is rotated in situ to release the threaded fixing of the flow guide pipe 404 and the jet pipe 6, and then the installation basket 4 is pulled out from the filter unit 3 in the reverse direction, so that the replacement of the catalyst 5, the maintenance of the installation basket 4 and the like are completed.

[0052] Embodiment two:

[0053] Embodiment two is different from the above-mentioned embodiment one in the connection mode of the jet pipe 6 and the flow guide pipe 404. Instead of being threadedly connected and fixed through the external thread 4041 of the upper end of the flow guide pipe 404 and the threaded hole of the jet pipe 6, the jet hole of the jet pipe 6 is extended downward, the rubber plug 7 at the end of the flow guide pipe 404 is pierced by the needle-shaped end of the extended end of the jet pipe 6, and the extended end of the jet pipe 6 is inserted into the flow guide pipe 404, so that the flow guide pipe 404 and the jet pipe 6 are conveniently connected.

[0054] Meanwhile, in order to strengthen the fastening and sealing of the connection, the outer surface of the extended end is also provided with anti-skid lines 8, which can provide sufficient friction force for the contact surface between the extended end of the jet pipe 6 and the rubber plug 7 during the process of filtering flue gas, reversely prevent unnecessary movement of the installation basket 4, and ensure the installation stability of the installation basket 4.

[0055] That is, the insertion between the needle-shaped extended end of the jet pipe 6 and the rubber plug 7 in the embodiment not only ensures the convenience of installation of the installation basket 4, but also ensures the sealing of the connection through the tight wrapping of the extended end of the jet pipe 6 by the elasticity of the rubber plug 7, avoids the escape of flue gas, and makes the friction force between the jet pipe 6 and the rubber plug 7 act on the installation basket 4 through the design of the anti-skid lines 8, so as to ensure the stability of the installation basket 4 during the process of flue gas purification and filtration.

[0056] Therefore, it can be found that the installation basket 4 in the embodiment does not involve large modification of the original dust removal device during the whole installation process, and can be quickly arranged and used on the basis of the original dust removal device, so that the originally single-function dust removal device has the flue gas catalytic purification capacity, and the efficiency of flue gas purification treatment is effectively improved at low cost and quickly.

[0057] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A fine dust removal and embedded catalytic module catalytic composite integrated device, comprising a dust removal bin (1), a flower plate (2), and a pulse controller for controlling the ejection of compressed air to clean a filter unit (3); the flower plate (2) extends across the interior of the dust removal bin (1) and divides the dust removal bin (1) into two upper and lower parts, so that the flue gas entering from the lower side of the dust removal bin (1) can only enter the upper side of the dust removal bin (1) through the flower plate holes (201) opened on the surface of the flower plate (2) and then be discharged; the filter unit (3) is fixedly installed in the flower plate holes (201); and is characterized in that: Also included is a mounting basket (4); The upper opening of the mounting basket (4) is closed by a mesh cover (401), the lower end is inserted into the interior of the filter unit (3) and fits against the inner wall of the filter unit (3), and the bottom surface is provided with mesh holes (402) for airflow to pass through; a catalyst (5) is placed in the mounting basket (4) to achieve catalytic purification of flue gas.

2. The fine dust removal and embedded catalytic module catalytic composite integrated device according to claim 1 is characterized in that: A limiting ring (403) extends outward from one end of the outer side of the mounting basket (4) close to the opening, and the outer diameter of the limiting ring (403) is larger than the opening diameter of the filter unit (3).

3. The fine dust removal and embedded catalytic module catalytic composite integrated device according to claim 1 is characterized in that: The filter unit (3) is any one of a cloth bag, a metal filter bag, and a ceramic fiber tube; the main structure of the mounting basket (4) is configured to be cylindrical in shape corresponding to the internal shape of the filter unit (3).

4. The fine dust removal and embedded catalytic module catalytic composite integrated device according to claim 1 is characterized in that: The air jet pipe (6) controlled by the pulse controller is connected and fixed to the mounting basket (4) via the external thread (4041) at the end of the guide pipe (404); the lower end of the guide pipe (404) passes through the entire mounting basket (4) until it is flush with the outer bottom surface of the mounting basket (4).

5. The fine dust removal and embedded catalytic module catalytic composite integrated device according to claim 1 is characterized in that: The jet pipe (6) controlled by the pulse controller extends downwards to have a needle-shaped extension end, which penetrates the rubber plug (7) at the end of the guide pipe (404) and communicates with the interior of the guide pipe (404), and the outer wall of the extension end is provided with anti-slip grooves (8).

6. The fine dust removal and embedded catalytic module catalytic composite integrated device according to claim 1 is characterized in that: The catalyst (5) is in the shape of honeycomb coal and has a limiting hole (501) at its center for the guide pipe (404) to pass through.

7. The fine dust removal and embedded catalytic module catalytic composite integrated device according to claim 2 is characterized in that: A ceramic fiber gasket (4031) is installed below the working surface of the limiting ring (403) facing the flower plate (2).

8. The fine dust removal and embedded catalytic module catalytic composite integrated device according to claim 1 is characterized in that: The honeycomb holes (502) of the plurality of catalysts (5) are coated with a catalyst (5) coating, wherein the coating is one or a combination of multiple types of SCR denitration catalysts, CO catalysts, and VOCs catalysts.

9. The fine dust removal and embedded catalytic module catalytic composite integrated device according to claim 4 is characterized in that: The lower end of the guide pipe (404) is a bell mouth (4042).

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