CN212236728U - Ceramic membrane catalysis filter tube and ceramic membrane catalysis equipment - Google Patents
Ceramic membrane catalysis filter tube and ceramic membrane catalysis equipment Download PDFInfo
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- CN212236728U CN212236728U CN202020205306.1U CN202020205306U CN212236728U CN 212236728 U CN212236728 U CN 212236728U CN 202020205306 U CN202020205306 U CN 202020205306U CN 212236728 U CN212236728 U CN 212236728U
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Abstract
The utility model provides a ceramic membrane catalysis chimney filter, include: a filtration layer and a catalytic layer; the catalytic layer is uniformly distributed in the filtering layer, the ceramic membrane catalytic filter tube is of a tubular structure with one closed end, the filtering layer is uniformly distributed with a plurality of filter holes, and the filter holes are used for enabling flue gas to enter the ceramic membrane catalytic filter tube. The utility model also provides a ceramic membrane catalytic unit.
Description
Technical Field
The utility model relates to an environmental protection technology field especially relates to a ceramic membrane catalysis chimney filter and ceramic membrane catalysis equipment.
Background
In the glass production process, flue gas components are very complicated due to the addition of mirabilite and soda ash, and the denitration, desulfurization and dust removal are affected. The glass kiln is fired once every 15 to 20 minutes, and the contents of sulfur dioxide, smoke dust and nitrogen oxides are all changed violently in the process of firing; in the glass production process, the stability of kiln pressure is very important, and the whole set of desulfurization, denitration and dust removal equipment is arranged at the tail part of the smoke of the melting furnace. Along with the continuous improvement of the flue gas emission standard of the glass melting furnace and the continuous departure of the monitoring measures of the strict atmospheric pollutant emission pipe in each region in China, the bottom-reading emission standard is imperative. Especially glass furnaces, have high nitrogen oxides, high sulfur dioxide, and contain multi-component impurities that are difficult to meet emission standards.
In the related art, the tail gas of the glass melting furnace is usually treated by adopting a mode of electrostatic dust collection + Selective Catalytic Reduction (SCR) denitration + wet desulphurization + wet dust collection, or an electrostatic dust collection + SCR denitration + dry desulphurization + bag dust collection.
However, in the related art, the denitration cost is high, and the denitration is not thorough, so that the increasingly stringent requirements of the exhaust emission standard are difficult to meet.
SUMMERY OF THE UTILITY MODEL
The utility model provides a ceramic membrane catalysis chimney filter and ceramic membrane catalysis equipment to denitration is with high costs among the solution correlation technique, and the denitration is not thorough moreover, is difficult to reach the problem that more and more severe exhaust emission standard required.
To achieve the above object, according to a first aspect of the present invention, there is provided a ceramic membrane catalytic filter tube, comprising: a filtration layer and a catalytic layer;
the catalytic layer is uniformly distributed in the filtering layer, the ceramic membrane catalytic filter tube is of a tubular structure with one closed end, the filtering layer is uniformly distributed with a plurality of filter holes, and the filter holes are used for enabling flue gas to enter the ceramic membrane catalytic filter tube.
In an alternative embodiment, the closed end of the ceramic membrane catalytic filter tube is a dome having a major axis diameter equal to the outer diameter of the ceramic membrane catalytic filter tube and a minor axis diameter less than or equal to the outer diameter of the ceramic membrane catalytic filter tube.
In an alternative embodiment, the closed end of the ceramic membrane catalytic filter tube is a dome having a minor axis diameter equal to the outer diameter of the ceramic membrane catalytic filter tube and a major axis diameter greater than or equal to the outer diameter of the ceramic membrane catalytic filter tube.
According to a second aspect of the present invention, there is provided a ceramic membrane catalytic apparatus, comprising an apparatus body and a ceramic membrane catalytic filter tube;
the equipment body comprises a smoke inlet pipeline and a smoke exhaust pipeline, wherein the smoke inlet pipeline is located at the bottom of the equipment body, the smoke exhaust pipeline is located at the top of the equipment body, the ceramic membrane catalysis filter tube is arranged in the equipment body and is arranged along the axial direction of the equipment body, the ceramic membrane catalysis filter tube is of a tubular structure with one end sealed and the other end open, and the opening is communicated with the smoke exhaust pipeline.
In an optional implementation mode, the equipment body further comprises an ash bucket positioned at the bottom, the ash bucket is of a funnel-shaped structure, and the top of the ash bucket is communicated with the bottom of the equipment body.
In an optional implementation mode, the ash bucket is multiple, the ash buckets are arranged at the bottom of the equipment body side by side, and the bottom of each ash bucket is communicated with the ash discharge pipeline.
In an optional embodiment, the inclined surface of the ash bucket forms an angle of 45-75 ° with the horizontal direction.
In an alternative embodiment, the distance between the flue gas inlet pipeline and the bottom of the ceramic membrane catalytic filter tube is less than or equal to the distance between the flue gas inlet pipeline and the top of the ash bucket.
In an alternative embodiment, the ceramic membrane catalytic filter tube is provided in plurality, and a plurality of the ceramic membrane catalytic filter tubes are arranged in the apparatus body at intervals.
In an optional embodiment, the ceramic membrane catalytic filter further comprises a pulse back-blowing device, and the pulse back-blowing device is communicated with the openings of the ceramic membrane catalytic filter tubes.
The utility model provides a ceramic membrane catalysis chimney filter and ceramic membrane catalysis equipment, wherein, ceramic membrane catalysis chimney filter, include: a filtration layer and a catalytic layer; the catalytic layer is uniformly distributed in the filtering layer, the ceramic membrane catalytic filter tube is of a tubular structure with one closed end, the filtering layer is uniformly distributed with a plurality of filter holes, and the filter holes are used for enabling flue gas to enter the ceramic membrane catalytic filter tube. So, when glass kiln flue gas passes through ceramic membrane catalysis chimney filter, at first ceramic membrane catalysis chimney filter filters the flue gas, filter the smoke and dust in the flue gas, in the flue gas after filtering enters into ceramic membrane catalysis chimney filter from the filtration pore, because evenly distributed has the catalysis layer in the ceramic membrane catalysis chimney filter, flue gas and catalysis layer fully contact, under the effect of flue gas waste heat and catalyst, nitrogen oxide in the flue gas is by catalytic reduction, thereby realize the denitration to glass kiln flue gas, denitration efficiency is high, satisfy emission standard. The denitration efficiency is improved, and the flue gas treatment cost of the glass kiln is reduced.
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, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.
FIG. 1 is a schematic structural view of a ceramic membrane catalytic filter tube according to an embodiment of the present disclosure;
FIG. 2 is an enlarged view of a portion of FIG. 1;
FIG. 3 is a schematic structural view of a ceramic membrane catalytic filter tube according to another embodiment of the present disclosure;
FIG. 4 is a schematic structural view of a ceramic membrane catalytic filter tube according to another embodiment of the present disclosure;
fig. 5 is a schematic structural diagram of a ceramic membrane catalytic apparatus according to an embodiment of the present application.
The reference numbers in the figures illustrate:
10-ceramic membrane catalytic equipment;
100-an apparatus body;
101-a smoke inlet pipeline;
102-a smoke exhaust duct;
103-ash bucket;
200-ceramic membrane catalytic filter tubes;
201-a filter layer;
202-a catalytic layer;
203-filter pores;
300-a back flushing device.
With the above figures, certain embodiments of the present invention have been shown and described in more detail below. The drawings and written description are not intended to limit the scope of the inventive concepts in any manner, but rather to illustrate concepts of the disclosure to those skilled in the art by reference to specific embodiments.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature.
In the description of the present invention, it is to be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning a fixed connection, an indirect connection through an intermediary, a connection between two elements, or an interactive relationship between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the description of the present invention, it is to be understood that the terms "top," "bottom," "side wall," "upper," "lower," "left," "right," and the like are used in the orientation or positional relationship indicated in the drawings for convenience of description and simplicity of description, and do not indicate or imply that the device or element so indicated must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.
In the description of the present invention, "a plurality" means two or more unless specifically stated otherwise.
Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Fig. 1 is a schematic structural diagram of a ceramic membrane catalytic filter tube according to an embodiment of the present disclosure. Fig. 2 is a partially enlarged schematic view of a portion a of fig. 1 of the present application.
Referring to fig. 1 and 2, an embodiment of the present application provides a ceramic membrane catalytic filter tube 200 including:
a filtration layer 201 and a catalytic layer 202;
the catalytic layer 202 is uniformly distributed in the filter layer 201, the ceramic membrane catalytic filter tube 200 is a tubular structure with one closed end, the filter layer 201 is uniformly distributed with a plurality of filter holes 203, and the filter holes 203 are used for flue gas to enter the ceramic membrane catalytic filter tube 200.
Specifically, in the present embodiment, the catalytic layer 202 includes a catalyst, a support co-catalyst component, and a mechanical stabilizing component; specifically, the catalytic layer 202 includes TiO2、WO3、MoO3、V2O5、SiO2、Al2O3CaO and Na2O/K2The O is matched according to the mass ratio of 780:90:5:30:75:15:10:1, wherein V is2O5Is an active component; the carrier cocatalyst is TiO2、WO3And MoO3，SiO2、Al2O3CaO and Na2O/K2O is a mechanically stable component. More specifically, in the embodiment of the present application, the diameter of the filtering holes 203 is 1 to 10 μm.
In this application embodiment, when glass kiln flue gas passes through ceramic membrane catalysis chimney filter 200, at first ceramic membrane catalysis chimney filter 200 filters the flue gas, filter the smoke and dust in the flue gas, flue gas after filtering enters into ceramic membrane catalysis chimney filter 200 from filtration pore 203, because evenly distributed has catalysis layer 202 in ceramic membrane catalysis chimney filter 200, the flue gas fully contacts with catalysis layer 202, under the effect of flue gas waste heat and catalyst, nitrogen oxide in the flue gas takes place catalytic reduction with the aqueous ammonia, thereby realize the denitration to glass kiln flue gas, denitration efficiency is high, satisfy emission standard. The denitration efficiency is improved, and the flue gas treatment cost of the glass kiln is reduced.
Specifically, in the embodiment of the present application, the reduction reaction between nitrogen oxides in the flue gas and ammonia water may be represented as follows:
4NO+4NH3+O2＝4N2+6H2O；
2NO2+4NH3+O2＝3N2+6H2O。
fig. 3 is a schematic structural diagram of a ceramic membrane catalytic filter tube according to another embodiment of the present disclosure.
In another alternative embodiment of the ceramic membrane catalytic filter tube 200 according to the present application, referring to fig. 3, based on the previous embodiment, the closed end of the ceramic membrane catalytic filter tube 200 is dome-shaped, the diameter of the major axis of the dome-shaped structure is equal to the outer diameter of the ceramic membrane catalytic filter tube 200, and the diameter of the minor axis of the dome-shaped structure is smaller than or equal to the outer diameter of the ceramic membrane catalytic filter tube 200.
In the embodiment of the application, the closed end of the ceramic membrane catalysis filter tube 200 is set to be in a dome structure, when the flue gas contacts with the closed end of the ceramic membrane catalysis filter tube 200, the structure in the shape of the dome can effectively reduce the resistance to the flue gas, and effectively reduce the pressure drop to ensure that the flue gas smoothly enters the ceramic membrane catalysis filter tube 200 from the filter holes 203.
Fig. 4 is a schematic structural diagram of a ceramic membrane catalytic filter tube according to another embodiment of the present application.
In another alternative embodiment of the ceramic membrane catalytic filter tube 200 according to the present application, referring to fig. 4, based on the previous embodiment, the closed end of the ceramic membrane catalytic filter tube 200 is dome-shaped, the minor axis of the dome-shaped structure has a diameter equal to the outer diameter of the ceramic membrane catalytic filter tube 200, and the major axis of the dome-shaped structure has a diameter greater than or equal to the outer diameter of the ceramic membrane catalytic filter tube 200.
In the embodiment of the application, the closed end of the ceramic membrane catalysis filter tube 200 is set to be in a dome structure, when the flue gas contacts with the closed end of the ceramic membrane catalysis filter tube 200, the structure in the shape of the dome can effectively reduce the resistance to the flue gas, and effectively reduce the pressure drop to ensure that the flue gas smoothly enters the ceramic membrane catalysis filter tube 200 from the filter holes 203.
Fig. 5 is a schematic structural diagram of a ceramic membrane catalytic apparatus according to an embodiment of the present application.
Based on the foregoing embodiments, referring to fig. 5, a ceramic membrane catalytic apparatus 10 provided in the embodiments of the present application includes an apparatus body 100 and ceramic membrane catalytic filter tubes 200;
the equipment body 100 comprises a smoke inlet pipeline 101 located at the bottom of the equipment body 100 and a smoke exhaust pipeline 102 located at the top of the equipment body 100, the ceramic membrane catalytic filter tube 200 is arranged in the equipment body 100 and is arranged along the axial direction of the equipment body 100, the ceramic membrane catalytic filter tube 200 is of a tubular structure with one end closed and the other end open, and the opening is communicated with the smoke exhaust pipeline 102.
Specifically, in the embodiment of the present application, the flue gas has a flue gas inlet pipe 101 to enter the apparatus body 100, and in the apparatus body 100, as shown in fig. 5, when the flue gas flows upward, the bottom of the apparatus body 100 with a heavier smoke dust settling value in the flue gas can be recycled under the action of gravity; the flue gas enters the ceramic membrane catalysis filter tube 200 to contact with the catalysis layer 202 in the ceramic membrane catalysis filter tube 200, and is subjected to reduction reaction with ammonia water under the action of the waste heat of the flue gas, so that the flue gas is denitrated.
In an alternative embodiment, referring to fig. 5, the main body 100 further includes an ash bucket 103 at the bottom, the ash bucket 103 is a funnel-shaped structure, and the top of the ash bucket 103 is communicated with the bottom of the main body 100.
Specifically, referring to fig. 5, in the embodiment of the present application, the ash bucket 103 is disposed at the bottom of the apparatus body 100, and the soot filtered by the ceramic membrane catalytic filter tube 200 settles into the ash bucket 103, so that the soot can be conveniently recycled, the resource recycling is ensured, and the processing cost is reduced.
In an alternative embodiment, the ash bucket 103 is multiple, the ash buckets 103 are arranged at the bottom of the equipment body 100 side by side, and the bottom of the ash bucket 100 is communicated with the ash discharge pipeline.
Specifically, referring to fig. 5, in the embodiment of the present application, an ash discharge pipe is provided, and the bottom of the ash bucket 103 is communicated with the ash discharge pipe, so that the smoke collected inside the ash bucket 103 is conveniently discharged.
In an alternative embodiment, the angle α between the inclined surface of the ash hopper 103 and the horizontal is 45 ° to 75 °.
In the embodiment of the application, the included angle alpha between the inclined plane of the ash hopper 103 and the horizontal direction is set to be 45-75 degrees, so that the ash can conveniently slide downwards under the action of gravity, and the energy consumption is saved.
In an alternative embodiment, referring to fig. 5, the distance L1 between the flue gas inlet duct 101 and the bottom of the ceramic membrane catalytic filter tube 200 is less than or equal to the distance L2 between the flue gas inlet duct 101 and the top of the ash bucket 103.
Specifically, in the embodiment of the present application, the distance L1 between the smoke inlet pipeline 101 and the bottom of the ceramic membrane catalytic filter tube 200 is set to be smaller than the distance L2 between the smoke inlet pipeline 101 and the top of the ash bucket 103; therefore, when smoke enters the equipment body 100, the smoke in the ash hopper 103 is prevented from being brought up, and the settling efficiency of the smoke is effectively ensured.
In an alternative embodiment, there are a plurality of ceramic membrane catalytic filter tubes 200, and a plurality of ceramic membrane catalytic filter tubes 200 are disposed at intervals in the apparatus body 100.
Specifically, in the embodiment of the present application, by providing the plurality of ceramic membrane catalytic filter tubes 200, the contact area between the flue gas and the catalytic layer 202 is increased, the efficiency of the catalytic reduction reaction is improved, the flue gas treatment rate is improved, and the flue gas denitration treatment effect is ensured.
In an alternative, referring to fig. 5, the ceramic membrane catalytic apparatus 10 provided in the embodiment of the present application further includes: the pulse back-blowing device 300, the pulse back-blowing device 300 is communicated with the opening of the ceramic membrane catalytic filter tube 200.
Specifically, after the ceramic membrane catalytic filter tube 200 works for a period of time, the pulse back-flushing device 300 performs back-flushing on the ceramic membrane catalytic filter tube 200, so that the risk that the ceramic membrane catalytic filter tube 200 is blocked is avoided, the effective work of the ceramic membrane catalytic filter tube 200 is ensured, and the service life of the ceramic membrane catalytic filter tube 200 is effectively prolonged.
Specifically, the ceramic membrane catalytic apparatus 10 provided in the embodiment of the present application is used for treating the flue gas of the glass kiln, and is compared with the conventional process, referring to tables 1 and 2 below; wherein, the table 1 is a traditional process flue gas purification condition table; table 2 shows the flue gas purification conditions of the glass kiln flue gas treatment method provided in the embodiment of the present application.
TABLE 1 flue gas cleaning situation chart of traditional process
As can be seen from table 1, the flue gas of the glass kiln is treated by the traditional method of "two-electric-field high-temperature electrostatic dust removal + SCR denitration + limestone/lime-gypsum desulfurization technique + wet electric dust removal", and the ultra-low emission standard cannot be met.
Table 2 table of flue gas purification conditions of glass kiln flue gas treatment method provided in the embodiment of the present application
As can be seen from the table 2, the glass wine bottle melting furnace smoke treatment process using natural gas as fuel adopts technical improvement aiming at the exceeding standard of smoke (dust), the original oxygen-enriched combustion process is reserved, the new process is the processes of oxygen-enriched combustion, primary waste heat, dry tempering, ceramic membrane catalytic filtration and secondary waste heat, and the ultra-low emission standard is achieved.
Through the comparison of table 1 and table 2, it can be seen that, the denitration treatment of the flue gas by adopting the ceramic membrane catalytic apparatus 10 provided by the embodiment of the present application is more thorough, and the increasingly strict exhaust emission standard can be satisfied.
It should be noted that the present embodiment has the same or corresponding beneficial effects as the previous embodiment, and the description of the present embodiment is omitted.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (10)
1. A ceramic membrane catalytic filter tube, comprising: a filtration layer and a catalytic layer;
the catalytic layer is uniformly distributed in the filtering layer, the ceramic membrane catalytic filter tube is of a tubular structure with one closed end, the filtering layer is uniformly distributed with a plurality of filter holes, and the filter holes are used for enabling flue gas to enter the ceramic membrane catalytic filter tube.
2. The ceramic membrane catalytic filter tube of claim 1, wherein the closed end of the ceramic membrane catalytic filter tube is a dome having a major axis diameter equal to the outer diameter of the ceramic membrane catalytic filter tube and a minor axis diameter less than or equal to the outer diameter of the ceramic membrane catalytic filter tube.
3. The ceramic membrane catalytic filter tube of claim 1, wherein the closed end of the ceramic membrane catalytic filter tube is a dome having a minor axis diameter equal to the outer diameter of the ceramic membrane catalytic filter tube and a major axis diameter greater than or equal to the outer diameter of the ceramic membrane catalytic filter tube.
4. The ceramic membrane catalysis equipment is characterized by comprising an equipment body and a ceramic membrane catalysis filter tube;
the equipment body comprises a smoke inlet pipeline and a smoke exhaust pipeline, wherein the smoke inlet pipeline is located at the bottom of the equipment body, the smoke exhaust pipeline is located at the top of the equipment body, the ceramic membrane catalysis filter tube is arranged in the equipment body and is arranged along the axial direction of the equipment body, the ceramic membrane catalysis filter tube is of a tubular structure with one end sealed and the other end open, and the opening is communicated with the smoke exhaust pipeline.
5. The ceramic membrane catalytic device as claimed in claim 4, wherein the device body further comprises an ash hopper at the bottom, the ash hopper is of a funnel-shaped structure, and the top of the ash hopper is communicated with the bottom of the device body.
6. The ceramic membrane catalytic device as claimed in claim 5, wherein the ash bucket is provided in plurality, and the ash buckets are arranged at the bottom of the device body side by side, and the bottom of the ash bucket is communicated with an ash discharge pipeline.
7. A ceramic membrane catalytic plant as claimed in claim 5, wherein the angle between the inclined surface of the ash hopper and the horizontal is in the range of 45 ° to 75 °.
8. A ceramic membrane catalytic plant as claimed in claim 5, wherein the distance between the flue inlet duct and the bottom of the ceramic membrane catalytic filter tube is less than or equal to the distance between the flue inlet duct and the top of the ash hopper.
9. A ceramic membrane catalytic plant as claimed in any of claims 4 to 8, wherein there are a plurality of ceramic membrane catalytic filter tubes, and a plurality of ceramic membrane catalytic filter tubes are arranged at intervals within the plant body.
10. A ceramic membrane catalytic device as claimed in claim 9, further comprising: and the pulse back flushing device is communicated with the opening of the ceramic membrane catalytic filter tube.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020205306.1U CN212236728U (en) | 2020-02-25 | 2020-02-25 | Ceramic membrane catalysis filter tube and ceramic membrane catalysis equipment |
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| CN202020205306.1U CN212236728U (en) | 2020-02-25 | 2020-02-25 | Ceramic membrane catalysis filter tube and ceramic membrane catalysis equipment |
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Address after: No. 22 Guanghua Road, Huaikou Street, Jintang County, Chengdu City, Sichuan Province, 610000 (within Jintang Industrial Park, Sichuan) Patentee after: Sichuan Meifeng Environmental Governance Co.,Ltd. Address before: No.8, Wangjiatang lane, Qingyang District, Chengdu, Sichuan 610014 Patentee before: SICHUAN MEIFUTE ENVIRONMENT TREATMENT Co.,Ltd. |