CN214233516U - Integrated gas dust removal catalytic unit - Google Patents
Integrated gas dust removal catalytic unit Download PDFInfo
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- CN214233516U CN214233516U CN202022228080.XU CN202022228080U CN214233516U CN 214233516 U CN214233516 U CN 214233516U CN 202022228080 U CN202022228080 U CN 202022228080U CN 214233516 U CN214233516 U CN 214233516U
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Abstract
The utility model provides an integrated gas dust removal catalytic unit, which comprises a shell, wherein the shell is divided into an upper air purifying chamber and a lower dust removing chamber by a pattern plate; at least one filtration piece of hanging on the card is provided with in the clean room, the card top has set gradually jetting module and catalytic module along the flue gas flow direction. The utility model discloses a set up catalytic module and filter piece, realized the integral type structure that flue gas removed dust and catalyzed, can independently change catalytic module and filter piece respectively moreover, through removing dust earlier to the flue gas and handling, reduce the harm of flue gas dust to the catalyst, increase catalytic module's life, in addition, the utility model discloses can avoid filtering the problem of useless processing admittedly as danger after the piece became invalid, greatly reduced the maintenance cost of device, have characteristics such as area is little and long service life.
Description
Technical Field
The utility model belongs to the technical field of gaseous purification, relate to gaseous dust removal catalysis, especially relate to a gaseous dust removal catalytic unit of integral type.
Background
High-efficiency dust removal is common basic industrial operation in a plurality of industrial fields such as metallurgy, energy, chemical industry and waste incineration, but with increasingly outstanding requirements of the environmental protection field on high efficiency, coupling and multifunction of the environmental protection technology, the completion of catalytic elimination of pollutants in flue gas while dust removal is performed on flue gas gradually becomes an important technical requirement in the current environmental protection field.
The cloth bag or ceramic tube dust removal is the most common and stable deep dust removal technology at present, and the concentration of the dust in the outlet flue gas can be stably lower than 5mg/m3. For the problem of simultaneous degradation of dust removal and pollutants, many technical schemes for coupling dust removal and catalysis of ceramic tubes are published and used, for example, V-W-Ti catalyst slurry is uniformly sprayed in the fiber ceramic tubes, and the fiber ceramic tubes with the dust removal and SCR denitration functions are obtained after microwave drying and solidification, so that the method has a large amount of practical application in the aspect of treatment of glass kiln flue gas; similarly, V-W-Ti catalyst particles are mixed into the prepared slurry of the fiber ceramic tube, the ceramic tube is prepared by vacuum forming, and the fiber ceramic tube with the functions of dust removal and SCR denitration is obtained after steam solidification, so that the dust removal and catalysis effects can be realized.
In the prior art, the ceramic tube and the catalyst are firmly combined into a whole, but in actual operation, the service life of the catalyst is usually shorter than that of the ceramic tube, so that the ceramic tube can still be used, and the loaded catalyst is inactivated, so that the dust removal function of the ceramic tube is wasted particularly for treating smoke containing toxic components of P, As, Hg, F or Cl and the like to the catalyst. In addition, the ceramic tubes doped with a small amount of SCR catalyst will be treated in the form of hazardous waste after deactivation, increasing the treatment cost.
CN210993670U discloses a high-efficient denitrification facility for exhaust-gas treatment, including dust remover and the denitration room that connects gradually, denitration room bottom is provided with the atomizer, and the atomizer passes through the nozzle to the indoor ammonia that mixes of denitration has oxygen, has set gradually rectifier, catalysis layer, guide plate and activated carbon layer along the flue gas flow direction in the denitration room to seted up at catalyst layer and activated carbon layer denitration room position and changed the door. The technology removes dust to the waste gas first, avoids blocking a catalyst bed layer, has long contact time of the waste gas with liquid ammonia and oxygen, is fully mixed, and has better denitration effect due to the arrangement of an activated carbon layer; through the arrangement of the replacement door, the catalyst bed layer and the activated carbon layer are convenient to replace. But this technique has add the equipment of removing dust back to the flue gas further purification, has the structure complicacy, overall structure's area big scheduling problem.
CN104275063A discloses a dust removal and catalysis integrated device, which is characterized in that a catalytic ceramic body is sleeved at an opening of a ceramic membrane tube cavity, gas enters the ceramic membrane tube cavity through a ceramic membrane tube, and then undergoes a catalytic reaction with a catalyst when passing through the catalytic ceramic body, so as to achieve the dust removal and catalysis effects. However, this device increases the air resistance during the dust removal process and has a problem that it is not easy to replace the catalytic ceramic body.
CN202590593U discloses a dust removal denitration integrated device, by the casing that urceolus and inner tube constitute, there is the annular space between the urceolus wall and the inner tube wall, and the inner tube mainly is used for removing dust and mixing ammonia, and the urceolus is mainly used for placing denitration catalyst bed, and the urceolus passes through the venturi channel with the inner tube intercommunication, is equipped with denitration catalyst bed in the annular space. The device can realize removing dust earlier and denitration, extension catalyst life-span. However, the structure of the apparatus is complicated, and there is still a problem that it is difficult to replace the catalyst.
The existing integrated gas dust removal catalytic device has the problems of complex structure, difficult catalyst replacement and the like, so that the device can be ensured to be simple in structure and convenient to replace the catalyst under the condition that the integrated gas dust removal catalytic device has a good gas purification effect, and the problem of urgent solution at present is solved.
SUMMERY OF THE UTILITY MODEL
Not enough to prior art exists, the utility model aims to provide a gaseous dust removal catalytic unit of integral type, through setting up filter piece, catalytic module and jetting module, realize the integral type structure of removing dust and catalysis to the flue gas, reduce the area of device to can independently change catalytic module and filter the piece, have characteristics such as simple structure and long service life.
To achieve the purpose, the utility model adopts the following technical proposal:
the utility model provides an integral type gaseous dust removal catalytic unit, integral type gaseous dust removal catalytic unit include the casing, the casing in separate for the clean air chamber of top and the clean room of below through the card.
At least one filtering piece hung on the pattern plate is arranged in the dust removing chamber.
And the blowing module and the catalytic module are sequentially arranged above the pattern plate along the flow direction of the flue gas.
The utility model discloses a set up catalytic module and filter piece, can independently change catalytic module and filter the piece to realized the integral type structure that the flue gas removed dust and catalysis, removed dust to the flue gas earlier, reduced the flue gas and to the harm of catalyst, cleared up filtering the piece through jetting module, made dust removal catalytic unit have long service life's characteristics, in addition, the utility model discloses can avoid filtering the problem of handling as dangerous solid useless after the piece became invalid, greatly reduced the maintenance cost of device.
As a preferred technical scheme of the utility model, catalytic module include along the flue gas flow direction stack gradually and be provided with at least one deck catalyst layer.
The catalyst layer has a thickness of 1 to 15cm, for example, 1cm, 2cm, 3cm, 4cm, 5cm, 6cm, 7cm, 8cm, 9cm, 10cm, 11cm, 12cm, 13cm, 14cm or 15cm, but is not limited to the above-mentioned values, and other values not listed in the above-mentioned range are also applicable.
The utility model discloses a set up multilayer catalyst layer to satisfy different gas cleaning's requirement.
The catalyst layer is a replaceable pull-out structure, and the shell where the air purifying chamber is located is provided with an inserting opening corresponding to the position of the catalyst layer.
The utility model discloses a set up the catalyst layer and be pull formula structure, make things convenient for the change of catalyst layer, avoid the catalyst deactivation to lead to the device unable continuous operation.
As a preferable embodiment of the present invention, the catalyst in the catalyst layer is the same or different in kind.
The catalyst comprises one or the combination of at least two of a denitration catalyst, a desulfurization catalyst, a VOCs removal catalyst or a dioxin removal catalyst.
The structure of the catalyst comprises one or the combination of at least two of a cylinder type, a particle type or a honeycomb type.
The utility model discloses can be according to the nature of dust removal flue gas, the type of reasonable catalyst that sets up, for example, need be to VOCs and nitrogen oxide desorption simultaneously in the flue gas, optionally, the equipartition has put the denitration catalyst and has taken off the VOCs catalyst in each layer catalyst layer, or denitration catalyst layer and take off VOCs catalyst layer alternate arrangement to guarantee the purifying effect of flue gas.
As a preferred technical scheme of the utility model, the upper and lower surface of catalyst layer is provided with backup pad and upper cover plate respectively, backup pad and upper cover plate be used for pressing from both sides and establish the catalyst layer.
The utility model discloses set up the backup pad in the lower part on catalyst layer, upper portion sets up the upper cover plate to prevent that the air current from blowing away the catalyst.
The supporting plate is a screen or a pore plate.
The upper cover plate is a screen or a pore plate.
The structure of the supporting plate is the same as or different from that of the upper cover plate.
As a preferred technical scheme of the utility model, the throat department of filtering the piece is provided with venturi.
The utility model discloses a place venturi in the laryngeal inlet department of filtering piece, avoid the blowback air current to the injury of filtering the piece, can also guarantee the blowback effect simultaneously.
The filtering piece comprises a filtering ceramic tube and/or a filtering cloth bag.
The blowing module comprises a blowing main pipe positioned above the pattern plate.
The blowing main pipe is provided with at least one nozzle.
The blowing direction of the nozzle is over against the throat of the filter piece.
As a preferred technical scheme of the utility model, the air inlet end of jetting house steward inserts the gas pocket after stretching out the casing.
And the air inlet end of the blowing main pipe is provided with an electromagnetic pulse valve.
The utility model discloses an electromagnetic pulse valve, the purge gas of control jetting module, when the air resistance is great in the device, utilize nozzle spun purge gas to clear up filtering piece.
As an optimal technical scheme of the utility model, clean room bottom be provided with the ash bucket.
And an ash discharge valve is arranged at the bottom of the ash bucket.
Illustratively, the purification method for dedusting and catalyzing the flue gas by adopting the integrated gas dedusting and catalyzing device specifically comprises the following steps:
the method comprises the following steps that (I) flue gas enters a dust removal chamber, dust is filtered and trapped by a filter element in the dust removal chamber, a powder cake layer is formed on the outer surface of the filter element, the flue gas after dust removal flows out from the upper part of the filter element, sequentially flows through each catalyst layer in a gas purification chamber, and is purified by a catalyst and then is discharged;
(II) when the air resistance in the integrated gas dust removal catalytic device is large, starting the blowing module, and blowing and cleaning the filter piece by using the gas sprayed by the nozzle.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model realizes the integrated structure of flue gas dust removal and catalysis by arranging the catalytic module and the filtering piece and arranging the catalytic module in the air purifying chamber, and can respectively and independently replace the catalytic module and the filtering piece, and reduces the harm of flue gas dust to the catalyst and prolongs the service life of the catalytic module by removing dust from the flue gas; the utility model discloses still can clear up filtering piece through jetting module, further improve the life who filters the piece, in addition, this utility model can avoid filtering the problem of handling useless admittedly as danger after the piece became invalid, greatly reduced the maintenance cost of device, have characteristics such as area is little and long service life.
Drawings
Fig. 1 is a schematic structural diagram of an integrated gas dust removal catalytic device provided in embodiment 1 of the present invention;
fig. 2 is a schematic structural diagram of an integrated gas dust removal catalytic device provided in embodiment 2 of the present invention.
Wherein, 1-air bag; 2-an electromagnetic pulse valve; 3-air purification chamber; 4-upper cover plate; 5-a support plate; 6-a catalyst layer; 7-a main blowing pipe; 8-a nozzle; 9-pattern plate; 10-a filter element; 11-a dust removal chamber; 12-ash bucket; 13-ash discharge valve.
Detailed Description
It is to be understood that in the description of the present invention, the terms "central," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for the purpose of convenience and simplicity of description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be construed as limiting the present invention.
It should be noted that, unless explicitly stated or limited otherwise, the terms "disposed," "connected" and "connected" in the description of the present invention are to be construed broadly, and may for example be fixedly connected, detachably connected or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.
In a specific embodiment, the utility model provides a gaseous dust removal catalytic unit of integral type, gaseous dust removal catalytic unit of integral type include the casing, separate for the clean air chamber 3 of top and the clean room 11 of below through card 9 in the casing, be provided with in the clean room 11 and hang at least one filtration piece 10 on card 9, wherein, the throat department of filtering piece 10 is provided with venturi, filters piece 10 for filtering ceramic pipe and/or filtering the sack, card 9 tops have set gradually jetting module and catalytic module along the flue gas flow direction.
The catalytic module include along the flue gas flow direction stack gradually and be provided with at least one deck catalyst layer 6, the thickness of catalyst layer 6 is 1 ~ 15cm, catalyst layer 6 is removable pull formula structure, offer on the casing of air-purifying chamber 3 place with 6 corresponding the inserting of catalyst layer position establish mouthful.
The types of the catalysts in the catalyst layer 6 are the same or different, the catalysts comprise one or the combination of at least two of denitration catalysts, desulfurization catalysts, VOCs removing catalysts or dioxin removing catalysts, and the structures of the catalysts comprise one or the combination of at least two of cylindrical, granular or honeycomb types.
The upper and lower surfaces of the catalyst layer 6 are respectively provided with a support plate 5 and an upper cover plate 4, the support plate 5 and the upper cover plate 4 are used for clamping the catalyst layer 6, the support plate 5 is a screen or a pore plate, the upper cover plate 4 is a screen or a pore plate, and the structure of the support plate 5 is the same as or different from that of the upper cover plate 4.
The blowing module comprises a blowing main pipe 7 positioned above the pattern plate 9; the blowing header pipe 7 is provided with at least one nozzle 8, and the blowing direction of the nozzle 8 is opposite to the throat of the filter piece 10; the air inlet end of the blowing main pipe 7 extends out of the shell and then is connected into the air bag 1, and the air inlet end of the blowing main pipe 7 is provided with an electromagnetic pulse valve 2.
The bottom of the dust removing chamber 11 is provided with an ash bucket 12, and the bottom of the ash bucket 12 is provided with an ash discharge valve 13.
Illustratively, the purification method for dedusting and catalyzing the flue gas by adopting the integrated gas dedusting and catalyzing device specifically comprises the following steps:
the flue gas enters a dust removal chamber 11, dust is filtered and trapped by a filter element 10 in the dust removal chamber 11, a powder cake layer is formed on the outer surface of the filter element 10, the flue gas after dust removal flows out from the upper part of the filter element 10, sequentially flows through each catalyst layer 6 in a gas purification chamber 3, and is purified by a catalyst and then is discharged;
(II) when the air resistance in the integrated gas dust removal catalytic device is large, starting the blowing module, and blowing and cleaning the filtering piece 10 by using the gas sprayed by the nozzle 8.
Example 1
This embodiment provides an integrated gas dust removal catalyst device as shown in fig. 1, which is based on a specific embodiment, wherein the filter element 10 is a filter cloth bag, the thickness of the catalyst layer 6 is 1cm, and the catalyst is a granular denitration catalyst.
The supporting plate 5 is a screen mesh, and the upper cover plate 4 is a pore plate.
Example 2
This embodiment provides an integrated gas dust-removing catalyst device as shown in fig. 2, according to a specific embodiment, wherein the filter element 10 is a filter ceramic tube, the thickness of the catalyst layer 6 is 8cm, and the catalyst is a cylindrical catalyst for removing VOCs.
The supporting plate 5 is a pore plate, and the upper cover plate 4 is a pore plate.
Example 3
The embodiment provides an integral type gas dust removal catalytic unit, based on a specific implementation mode, wherein, filter 10 for filtering the sack with filter the ceramic tube, catalyst layer 6's thickness is 15cm, the catalysis module includes three-layer catalyst layer 6, along the flue gas flow direction, the catalyst is desulfurization catalyst, denitration catalyst and the dioxin catalyst of taking off in proper order in catalyst layer 6, catalyst structure be the honeycomb type.
The support plate 5 is a screen, and the upper cover plate 4 is a screen.
Example 4
The embodiment provides an integrated gas dust removal catalytic device, which is based on a specific implementation manner, wherein the filtering element 10 is a filtering cloth bag and a filtering ceramic tube, the thickness of the catalyst layer 6 is 12cm, the catalytic module comprises 5 catalyst layers 6, the catalyst in each catalyst layer 6 is a combination of a desulfurization catalyst, a catalyst for removing VOCs and a catalyst for removing dioxin, and the catalyst is a combination of a particle type and a honeycomb type.
The supporting plate 5 is a pore plate, and the upper cover plate 4 is a screen.
Example 5
This embodiment provides a gaseous dust removal catalytic unit of integral type, based on a specific implementation, wherein, filter 10 be the filtration sack, catalyst layer 6's thickness is 5cm, and catalytic module includes 2 layers of catalyst layer 6, and the catalyst is the combination of desulfurization catalyst, VOCs catalyst and the dioxin catalyst of taking off in each layer of catalyst layer 6, the catalyst is the combination of cylinder type, granule type and honeycomb type.
The support plate 5 is a screen, and the upper cover plate 4 is a screen.
The utility model realizes the integrated structure of flue gas dust removal and catalysis by arranging the catalytic module and the filtering piece and arranging the catalytic module in the air purifying chamber, and can respectively and independently replace the catalytic module and the filtering piece, and reduces the harm of flue gas dust to the catalyst and prolongs the service life of the catalytic module by removing dust from the flue gas; the utility model discloses still can clear up filtering piece through jetting module, further improve the life who filters the piece, in addition, this utility model can avoid filtering the problem of handling useless admittedly as danger after becoming invalid, greatly reduced the maintenance cost of device.
The applicant states that the above description is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and those skilled in the art should understand that any changes or substitutions easily conceivable by those skilled in the art within the technical scope of the present invention are within the protection scope and the disclosure scope of the present invention.
Claims (9)
1. The integrated gas dust removal catalytic device is characterized by comprising a shell, wherein the shell is divided into an upper air purifying chamber and a lower dust removing chamber by a pattern plate;
at least one filtering piece hung on the pattern plate is arranged in the dust removing chamber;
and the blowing module and the catalytic module are sequentially arranged above the pattern plate along the flow direction of the flue gas.
2. The integrated gas dedusting catalytic device as recited in claim 1, wherein the catalytic module comprises at least one catalyst layer sequentially stacked along a flue gas flow direction;
the thickness of the catalyst layer is 1-15 cm.
3. The integrated gas dust-removing and catalyzing device as recited in claim 2, wherein the catalyst layer is a replaceable pull-out structure, and the housing in which the air purifying chamber is located is provided with an insertion opening corresponding to the catalyst layer.
4. The integrated gas dust removal catalyst device according to claim 2, wherein the catalyst in the catalyst layer is one of a denitration catalyst, a desulfurization catalyst, a VOCs removal catalyst or a dioxin removal catalyst;
the structure of the catalyst comprises one or the combination of at least two of a cylinder type, a particle type or a honeycomb type.
5. The integrated gas dedusting catalytic device as recited in claim 2, wherein the upper and lower surfaces of the catalyst layer are respectively provided with a support plate and an upper cover plate, and the support plate and the upper cover plate are used for clamping the catalyst layer;
the supporting plate is a screen or a pore plate;
the upper cover plate is a screen or a pore plate;
the structure of the supporting plate is the same as or different from that of the upper cover plate.
6. An integrated gas dedusting catalytic device as in claim 1 wherein a venturi is provided at the throat of the filter element;
the filtering piece comprises a filtering ceramic tube and/or a filtering cloth bag.
7. The integrated gas dedusting catalytic device as set forth in claim 1, wherein the blowing module comprises a blowing header located above the faceplate;
the blowing main pipe is provided with at least one nozzle;
the blowing direction of the nozzle is over against the throat of the filter piece.
8. The integrated gas dedusting catalytic device as recited in claim 7, wherein the gas inlet end of the blowing header pipe extends out of the housing and then is connected to the gas bag;
and the air inlet end of the blowing main pipe is provided with an electromagnetic pulse valve.
9. The integrated gas dust removal catalytic device according to claim 1, wherein an ash hopper is arranged at the bottom of the dust removal chamber;
and an ash discharge valve is arranged at the bottom of the ash bucket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022228080.XU CN214233516U (en) | 2020-10-09 | 2020-10-09 | Integrated gas dust removal catalytic unit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022228080.XU CN214233516U (en) | 2020-10-09 | 2020-10-09 | Integrated gas dust removal catalytic unit |
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| CN214233516U true CN214233516U (en) | 2021-09-21 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117463144A (en) * | 2023-12-26 | 2024-01-30 | 沧州中铁装备制造材料有限公司 | Dry desulfurization equipment for coal-charging dust-removing flue gas |
-
2020
- 2020-10-09 CN CN202022228080.XU patent/CN214233516U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117463144A (en) * | 2023-12-26 | 2024-01-30 | 沧州中铁装备制造材料有限公司 | Dry desulfurization equipment for coal-charging dust-removing flue gas |
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