CN115672308A - Manufacturing process of honeycomb catalyst monomer for SCR denitration - Google Patents
Manufacturing process of honeycomb catalyst monomer for SCR denitration Download PDFInfo
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- CN115672308A CN115672308A CN202211291073.1A CN202211291073A CN115672308A CN 115672308 A CN115672308 A CN 115672308A CN 202211291073 A CN202211291073 A CN 202211291073A CN 115672308 A CN115672308 A CN 115672308A
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- 239000003054 catalyst Substances 0.000 title claims abstract description 128
- 239000000178 monomer Substances 0.000 title claims abstract description 104
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 20
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 38
- 239000003546 flue gas Substances 0.000 claims abstract description 38
- 238000001125 extrusion Methods 0.000 claims abstract description 10
- 239000000203 mixture Substances 0.000 claims abstract description 7
- 238000000465 moulding Methods 0.000 claims abstract description 7
- 239000002815 homogeneous catalyst Substances 0.000 claims abstract description 4
- 239000002699 waste material Substances 0.000 claims abstract description 4
- 239000011148 porous material Substances 0.000 claims description 24
- 238000000034 method Methods 0.000 claims description 18
- 238000009740 moulding (composite fabrication) Methods 0.000 claims description 13
- 238000005520 cutting process Methods 0.000 claims description 9
- 238000001035 drying Methods 0.000 claims description 9
- 238000002360 preparation method Methods 0.000 claims description 9
- 239000002002 slurry Substances 0.000 claims description 8
- 239000002994 raw material Substances 0.000 claims description 7
- 238000001354 calcination Methods 0.000 claims description 6
- 229910010413 TiO 2 Inorganic materials 0.000 claims description 4
- 239000000463 material Substances 0.000 description 9
- 238000010531 catalytic reduction reaction Methods 0.000 description 7
- 238000002156 mixing Methods 0.000 description 5
- 230000003197 catalytic effect Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 239000000428 dust Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 230000002779 inactivation Effects 0.000 description 2
- 239000002440 industrial waste Substances 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- 238000003916 acid precipitation Methods 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000006477 desulfuration reaction Methods 0.000 description 1
- 230000023556 desulfurization Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000013386 optimize process Methods 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- GFNGCDBZVSLSFT-UHFFFAOYSA-N titanium vanadium Chemical compound [Ti].[V] GFNGCDBZVSLSFT-UHFFFAOYSA-N 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The invention relates to a manufacturing process of a honeycomb catalyst monomer for SCR denitration, which takes a waste SCR denitration catalyst as a disposal object and comprises the following steps: 1) The size of the cross section of the honeycomb catalyst monomer is designed to be 150mm multiplied by 150mm, and the cross section hole pattern of the flue gas flow passage of the catalyst monomer is of a regular hexagon structure; the arrangement mode of the regular hexagon structure of the cross section of the flue gas flow passage of the catalyst monomer is as follows: one of the symmetrical diagonal lines of the regular hexagon is perpendicular to or parallel to one side edge of the catalyst monomer(ii) a 2) The catalyst monomer is a homogeneous catalyst, and the production process of the catalyst monomer comprises the following steps: adding TiO into the mixture 2 、V 2 O 5 、WO 3 The mixture is extruded and molded integrally by vacuum extrusion equipment by adopting an inner hole core regular hexagon monomer molding die, and then is cut and molded after being calcined and dried.
Description
Technical Field
The invention belongs to the technical field of desulfurization, denitrification and ultra-clean pollution treatment of industrial waste flue gas, and particularly relates to a manufacturing process of a honeycomb catalyst monomer for SCR (selective catalytic reduction) denitrification.
Background
With the stricter and stricter environmental pollution discharge standards, the national pollution treatment intensity is continuously increased. The pollution of industrial waste flue gas is an important cause of global warming caused by atmospheric environmental pollution at present, and dust and SO in the waste flue gas 2 、NO x The harmful substances are important pollution factors causing air pollution, wherein NO x Is one of the main pollutants causing photochemical smog in the air to destroy the ozone layer and form acid rain.
At present, the NO in the smoke is aimed at x The tail end treatment has various process technical lines, wherein selective non-catalytic reduction (SNCR) and Selective Catalytic Reduction (SCR) in the catalytic reduction method are two main process technical methods, and the Selective Catalytic Reduction (SCR) method gradually becomes a mainstream process for the tail end denitration treatment of the smoke because the Selective Catalytic Reduction (SCR) method has the advantages of high denitration efficiency (more than or equal to 90%), low reaction temperature, reliable operation and the like.
The Selective Catalytic Reduction (SCR) process utilizes NH 3 Reducing agent, under the action of catalyst, selectively reacting with NO in flue gas x Reacting to generate nitrogen and water, thereby removing NO in the flue gas x The core of the process technology is a denitration catalyst. The most commonly used catalyst at present is TiO 2 The vanadium-titanium catalyst used as the carrier has three structural types: plate, honeycomb, and corrugated plate. The three types of catalysts have advantages and disadvantages, and the honeycomb catalyst has the characteristics of large specific surface area, high activity, small catalytic volume and the like, so the honeycomb catalyst is most widely applied.
Currently, the mainstream production process of the honeycomb catalyst mainly comprises the steps of slurry preparation, extrusion molding, drying and calcining, finished product cutting and the like, the cross section specification of a common commercial catalyst monomer is 150 × 150mm, the number of the holes is 20 × 20 holes, 25 × 25 holes, 30 × 30 holes and the like, the cross section hole pattern of the catalyst monomer is generally a regular quadrilateral hole channel (see fig. 1 and fig. 1 a), and the 30 × 30 hole catalyst monomer is taken as an example, the outer wall thickness is generally 1.2mm, and the inner wall thickness is about 0.7mm. The (catalyst) monomer (cross section) flue gas flow passage is a honeycomb catalyst with a regular quadrilateral hole pattern, and the honeycomb catalyst is used as a mainstream catalyst monomer model, is widely used from the last 80 th century, has good denitration performance, good operation stability and reliability and compact shape, and is still the mainstream catalyst preparation model selection for SCR denitration.
However, with the continuous expansion of the market scale of flue gas SCR denitration, the dosage of the denitration catalyst is increased year by year, and the traditional catalyst with a flue gas pore channel with a monomer section in a quadrilateral shape is easy to block when being exposed in the using and running processes, so that the service life cycle of the catalyst is short, the structural strength of the monomer is insufficient, the manufacturing material quantity of the monomer of the catalyst is large, the catalytic denitration performance is obviously attenuated, and the like. Therefore, a novel catalyst which has better denitration performance, better monomer structure performance, more material saving and more beautiful and harmonious appearance is urgently needed to be developed.
Disclosure of Invention
The invention provides a manufacturing process of honeycomb catalyst monomers for SCR denitration, which solves the defects of the traditional honeycomb catalyst (monomer) with quadrangular (cross-sectional) pore canals in the operation of a denitration system.
The technical scheme of the invention is as follows: a manufacturing process of a honeycomb catalyst monomer for SCR denitration takes a waste SCR denitration catalyst as a disposal object, and comprises the following steps:
1) The size of the cross section of the honeycomb catalyst monomer is designed to be 150mm multiplied by 150mm, and the cross section hole pattern of the flue gas flow passage of the catalyst monomer is of a regular hexagon structure;
the arrangement mode of the regular hexagon structure of the cross section of the flue gas flow passage of the catalyst monomer is as follows: one symmetrical diagonal line of the regular hexagon is vertical or parallel to one side edge of the catalyst monomer;
2) The catalyst monomer is a homogeneous catalyst, and the production process of the catalyst monomer comprises the following steps: mixing TiO with 2 、V 2 O 5 、WO 3 The mixture is extruded and molded integrally by vacuum extrusion equipment by adopting an inner hole core regular hexagon monomer molding die, and then is cut and molded after being calcined and dried.
Further, in the step 1), all the flue gas flow channels with the regular hexagonal structure of the catalyst monomer are uniformly distributed at equal intervals, and the distance between the adjacent channels and the channel = the wall thickness of the inner wall and the distance between two parallel sides of the flue gas channel with the regular hexagonal structure.
Furthermore, the number of the catalyst monomer holes is variable according to the wall thickness and the cross-sectional area, and is designed as follows: 20 × 24=480 wells, 24 × 28=672 wells, 28 × 32=896 wells, 30 × 34=1020 wells.
Furthermore, the outer wall thickness of the catalyst monomer is more than or equal to 1.2mm, the inner wall thickness is 0.7mm, the side length of the regular hexagon structure of the cross-section pore channel of the catalyst monomer designed according to the number of 28 multiplied by 32=896 holes is 2.64mm; the side length of the regular hexagon structure of the cross-section pore canal of the catalyst monomer designed by 30 multiplied by 34=1020 holes is 2.45mm.
Further, the process flow of the step 2) is as follows: preparing slurry, pre-extruding, extruding and forming, calcining, cutting and forming, drying and obtaining a finished product.
Still further, the step 2) specifically comprises the following steps:
2.1 Preparation of a slurry of TiO 2 、V 2 O 5 、WO 3 Mixing the raw materials according to the proportion, and uniformly stirring;
2.2 Raw materials are mixed and stirred evenly, pre-extruded into a block blank, and then enter a forming machine to be formed by vacuum extrusion through a forming die with a regular hexagon hole core;
2.3 Drying the molded catalyst monomer;
2.4 Cutting the dried catalyst monomer according to the required size;
2.5 Standard size catalyst monomer is further calcined to a finished product.
The invention has the technical effects that: the preparation process of the honeycomb catalyst monomer for SCR denitration disclosed by the invention has the advantages that the mechanical structure performance of the catalyst is better, the shape is more harmonious and attractive, the blockage and inactivation of catalyst pore channels can be effectively avoided or delayed, the consumption of catalyst materials can be reduced, the attenuation of the catalytic denitration performance can be effectively slowed down or avoided, the life cycle of the catalyst is prolonged, and an SCR denitration system is more stable and reliable.
Drawings
FIG. 1 is a cross-sectional view of a honeycomb catalyst monomer having a conventional cell passage (cross section) of a regular quadrilateral type;
FIG. 1a is a partial structure diagram of a honeycomb catalyst with regular quadrilateral holes in the cross section;
FIG. 2 is a structural view of a cross section of a honeycomb catalyst monomer having a cell passage (cross section) of a regular hexagonal cell pattern according to the present invention;
FIG. 2a is a partial structure diagram of the cross section of the honeycomb catalyst monomer with regular hexagonal cross section according to the present invention;
FIG. 3 is a layout diagram of honeycomb catalyst cell patterns with regular hexagonal (cell) cross-sections of the cells of the present invention;
FIG. 4a is a schematic view of a gas flow field in a conventional porous honeycomb catalyst pore;
FIG. 4b is a schematic view of the gas flow field inside the cell channels of the porous honeycomb catalyst of the present invention;
further, in the design of the present invention shown in fig. 2, fig. 2a, and fig. 3, the cross section of the duct is regular hexagon, and the number of the monomer holes is 28x32= 896; the cross section of the flue gas flow passage of the catalyst monomer is in a regular hexagon, the outer wall of the catalyst monomer is the distance between a regular hexagon edge or a vertex angle and the outer side edge of the monomer, and the inner wall is the distance between the adjacent side edges of the two adjacent passages.
FIGS. 4a and 4b are schematic diagrams showing gas flow fields in honeycomb catalyst channels with monomer channel cross-sections in regular quadrilateral and regular hexagonal channel structures;
further, in the figure, the inner wall A, the outer wall B and the catalyst monomer flue gas flow passage have regular hexagonal cross sections; the wall thickness b of the inner wall, the parallel (or vertical) edge distance a of the flue gas duct (one symmetrical diagonal line in the regular hexagon of the section of the duct is vertical or parallel to the side edge of the catalyst monomer), and the duct distance a + b.
Detailed Description
Comparative example in fig. 1: the adopted (regular) quadrilateral holes have the outer wall of 1.2mm, the inner wall of 0.7mm, the number of holes 30X30=900 holes, the length of the hole edge of 4.22mm, and the area of a single hole of 17.8084mm 2 Kong Zong cross-sectional area: 17.81X900=16027.6mm 2 ；
The invention discloses a preparation process of a honeycomb catalyst monomer for SCR denitration, which has better mechanical structure performance and more harmonious and attractive appearance, can effectively avoid or delay the blockage and inactivation of catalyst pore channels, can also reduce the consumption of catalyst materials, effectively slow down or avoid the attenuation of catalytic denitration performance, increases the life cycle of a catalyst, and ensures that an SCR denitration system is more stable and reliable.
The preparation process of the catalyst monomer comprises the following steps:
the size of the cross section of the honeycomb catalyst monomer is designed to be 150mm multiplied by 150mm, and the cross section hole pattern of the flue gas flow passage of the catalyst monomer is of a regular hexagon structure (see fig. 2 and 2 a);
(II) furthermore, as an optimal design scheme, the arrangement mode of the regular hexagon (structure) of the cross section of the flue gas flow channel of the catalyst (monomer) is as follows: one of the symmetrical diagonal lines of the regular hexagon is perpendicular or parallel to one side of the catalyst monomer (see fig. 3);
thirdly, as an optimized design scheme, all regular hexagonal (structure) flue gas flow channels of the catalyst monomer are uniformly distributed at equal intervals, and the distance between the adjacent channels is the thickness b of the inner wall (wall) and the distance a between two parallel edges of the regular hexagonal (flue gas) channels (see figure 3);
and (IV) further, as an optimized design scheme, the number of the catalyst monomer holes takes the wall thickness b and the cross-sectional area as variables, and can be designed as follows: the number of holes such as 20 × 24=480 holes, 24 × 28=672 holes, 28 × 32=896 holes, 30 × 34=1020 holes, etc. (this application contains all hole pattern calculated by this scheme, and no one is listed any more);
and fifthly, further, as an optimized design scheme, the outer wall thickness of the catalyst monomer is more than or equal to 1.2mm, and the inner wall thickness is about 0.7mm. The (catalyst) monomer is designed according to the number of 28 × 32=896 holes, and the side length of a cross-section pore channel regular hexagon (structure) is about 2.64mm; the (catalyst) monomer designed by 30 × 34=1020 holes has a cross-section pore channel regular hexagon (structure) side of about 2.45mm, etc. (see fig. 2, fig. 2a, fig. 3) (this application includes all the hole pattern and parameter settings calculated by this scheme design, and is not listed one by one).
And further, as an optimized process manufacturing scheme, the catalyst is a homogeneous catalyst, and the technical method of the catalyst monomer production process comprises the following steps: mixing TiO with 2 、V 2 O 5 、WO 3 And (3) integrally extruding and molding the mixture by vacuum extrusion equipment by adopting an inner hole core regular hexagon monomer molding die, calcining, drying and cutting to form the mixture. The specific process flow mainly comprises the following steps: preparing slurry, pre-extruding, extruding and molding, calcining, cutting and molding, drying and obtaining a finished product.
Compared with the existing mainstream regular quadrilateral section pore channel catalyst monomer structure type, the invention has the advantages that:
the method comprises the following steps of (I) analyzing from the perspective of material structure mechanics, wherein the structural mechanical stability of a regular hexagon is superior to that of a quadrangle or a rhombus, and the mechanical property and the mechanical strength of a catalyst monomer of a hexagonal pore channel structure are superior to those of a quadrangle pore channel structure.
And (II) from the analysis of the distribution angle of the fluid flow field, the included angle of the inner side of the hexagonal structure is larger, so that the uniform distribution of the gas flow field is facilitated, the flowing dead angle is not easy to form, and the deposition and blockage of dust in the flue gas are not easy to cause (see fig. 4 b).
And (III) the regular hexagonal flue gas flow passage structure has larger hole sectional area, more sufficient space utilization and better contact effect of the flue gas and the wall surface of the catalyst. Taking the catalyst monomer with the common specification of 150 multiplied by 150mm, the wall thickness of the outer wall of more than or equal to 1.2mm, the thickness of the inner wall of 0.7mm and the unit length as an example, the cross section of a pore channel is a quadrangle 30 multiplied by 30=900 pores, and the cross section of the pore is 16029mm 2 (ii) a Catalyst with pore channel cross section of regular hexagon 28X32=896 poresThe cross-sectional area of the agent monomer hole is 16227mm 2 The cross section area of the hexagonal structure hole is larger than that of the quadrilateral structure (see table 1);
and fourthly, the material for manufacturing the catalyst monomer with the flue gas pore passage cross section of the regular hexagon structure is more saved. Similarly, taking the common specification of 150 × 150mm, the wall thickness of the outer wall of more than or equal to 1.2mm, the thickness of the inner wall of 0.7mm and the catalyst monomer with unit length as an example, the dosage of the catalyst monomer material with the cross section of a channel being a quadrangle of 30 × 30=900 holes is 0.006471mm 3 (ii) a The consumption of the catalyst monomer material with the cross section of the pore channel being hexagonal 28 multiplied by 32=896 pores is 0.006273mm3, and the material consumption of the hexagonal structure is 3.05 percent less than that of the quadrilateral structure (see table 1).
TABLE 1 comparison of design parameters for catalyst monomer pore type (Standard size: 150X 1000mm)
And (V) the flue gas flow passage of the catalyst monomer is in a regular hexagon passage structure, so that the appearance is more attractive and harmonious.
In order to more vividly illustrate the embodiments of the present invention, further description will be made as follows, with reference to the accompanying drawings:
referring to the attached drawings 2, 2a and 3, the cross section of the flue gas flow passage of the honeycomb catalyst for SCR denitration is in a regular hexagon structure. The size of the catalyst monomer is designed according to the standard of 150mm multiplied by 150mm (figure 2), and the cross section of the flue gas flow passage of the catalyst adopts a regular hexagon hole type structure (figure 2 a);
referring to the attached figure 3, the flue gas flow passage of the catalyst monomer is in a regular hexagon hole type, and the arrangement mode is as follows: one symmetrical diagonal line of the regular hexagon is vertical or parallel to one side edge of the catalyst monomer; all the regular hexagonal flue gas flow channels of the (catalyst) monomer are uniformly distributed at equal intervals, and the distance between the adjacent channels is the thickness a of the inner wall and the distance b between two parallel edges of the regular hexagonal channels.
Referring to the attached figure 2, the cross section of the flue gas flow passage of the catalyst monomer is regular hexagon, the side length of the regular hexagon of the cross section of the passage is about 2.64mm, the thickness of the outer wall is greater than or equal to 1.53mm, and the thickness of the inner wall is 0.7mm, taking the monomer designed by taking the number of 28 × 32=896 holes as an example.
Referring to fig. 4a and 4b, comparing two catalysts designed with flue gas duct hole patterns, the included angle of the inner side of the section of the duct with a hexagonal structure is larger, so that a flowing dead angle is not easy to form, and an airflow field dead angle is easy to form in the flue gas duct with a quadrilateral structure, so that deposition and blockage of dust in flue gas are easy to cause.
Furthermore, the catalyst monomer with the pore canal with the cross section of the regular hexagon structure is formed by extrusion of a forming die with a regular hexagon inner hole core;
furthermore, the preparation process method of the catalyst monomer with the pore passage cross section of the regular hexagon structure comprises the steps of slurry preparation, extrusion forming, calcining, drying, cutting and the like, and then the finished product is obtained.
The method specifically comprises the following main processes:
1) Preparing a slurry by mixing TiO 2 、V 2 O 5 、WO 3 The raw materials are mixed and stirred evenly after being proportioned;
2) Mixing and stirring the raw materials uniformly, pre-extruding the raw materials into a block blank, then putting the block blank into a forming machine, and carrying out vacuum extrusion forming by using a forming die with a regular hexagon hole core;
3) Drying the molded catalyst monomer;
4) Cutting the dried (catalyst) monomer according to the required size;
5) The standard size catalyst monomer is further calcined to a finished product.
Claims (6)
1. A manufacturing process of a honeycomb catalyst monomer for SCR denitration takes a waste SCR denitration catalyst as a disposal object, and is characterized by comprising the following steps:
1) The size of the cross section of the honeycomb catalyst monomer is designed to be 150mm multiplied by 150mm, and the cross section hole pattern of the flue gas flow passage of the catalyst monomer is of a regular hexagon structure;
the arrangement mode of the regular hexagon structure of the cross section of the flue gas flow passage of the catalyst monomer is as follows: one symmetrical diagonal line of the regular hexagon is vertical or parallel to one side edge of the catalyst monomer;
2) The catalyst monomer is a homogeneous catalyst, and the production process of the catalyst monomer comprises the following steps: adding TiO into the mixture 2 、V 2 O 5 、WO 3 The mixture is extruded and molded integrally by vacuum extrusion equipment by adopting an inner hole core regular hexagon monomer molding die, and then is cut and molded after being calcined and dried.
2. The manufacturing process of the honeycomb catalyst monomer for SCR denitration according to claim 1, wherein in the step 1), all the flue gas flow channels with the regular hexagonal structure of the catalyst monomer are uniformly distributed at equal intervals, and the distance between the adjacent channels and the channel = the wall thickness of the inner wall + the distance between two parallel sides of the regular hexagonal flue gas channel.
3. The manufacturing process of the honeycomb catalyst monomer for SCR denitration according to claim 2, wherein the number of the catalyst monomer holes is variable in wall thickness and cross-sectional area, and is designed as follows: 20 × 24=480 wells, 24 × 28=672 wells, 28 × 32=896 wells, 30 × 34=1020 wells.
4. The manufacturing process of the honeycomb catalyst monomer for SCR denitration according to claim 3, wherein the outer wall thickness of the catalyst monomer is more than or equal to 1.2mm, the inner wall thickness is 0.7mm, the catalyst monomer is designed according to the number of 28x32=896 holes, and the side length of the regular hexagon structure of the cross section pore channel is 2.64mm; the side length of the regular hexagon structure of the cross-section pore canal of the catalyst monomer designed by 30 multiplied by 34=1020 holes is 2.45mm.
5. The manufacturing process of the honeycomb catalyst monomer for SCR denitration according to claim 1, wherein the process flow of the step 2) is as follows: preparing slurry, pre-extruding, extruding and forming, calcining, cutting and forming, drying and obtaining a finished product.
6. The manufacturing process of the honeycomb catalyst monomer for SCR denitration according to claim 5, wherein the step 2) specifically comprises the following steps:
2.1 Preparation of a slurry of TiO 2 、V 2 O 5 、WO 3 The raw materials are mixed and stirred uniformly after being proportioned;
2.2 Raw materials are mixed and stirred evenly, pre-extruded into a block blank, and then the block blank enters a forming machine to be formed by vacuum extrusion through a forming die with a regular hexagon hole core;
2.3 Drying the molded catalyst monomer;
2.4 Cutting the dried catalyst monomer according to the required size;
2.5 Standard size catalyst monomer is further calcined to a finished product.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114733502A (en) * | 2022-04-20 | 2022-07-12 | 河北威达蓝海环保科技股份有限公司 | Regeneration treatment process for titanium dioxide carrier raw material of waste reduction denitration catalyst in wide temperature range |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101676024A (en) * | 2008-09-17 | 2010-03-24 | 晶锐瓷业（北京）有限公司 | Faviform ammonia-method selective-catalytic-reduction denitrified catalyst and preparation method thereof |
| CN201815314U (en) * | 2010-10-27 | 2011-05-04 | 山东电力研究院 | Honeycombed catalyst provided with regular hexagonal internal pore passage structure and used for SCR denitration technology |
| CN103212451A (en) * | 2013-04-19 | 2013-07-24 | 中电投远达环保工程有限公司 | Honeycomb catalyst unit and honeycomb catalyst module |
| CN105170136A (en) * | 2015-10-14 | 2015-12-23 | 浙江广翰环保科技股份有限公司 | High specific surface area honeycomb type denitration catalyst and preparation method thereof |
| CN105597730A (en) * | 2015-08-17 | 2016-05-25 | 中国石油大学(北京) | Honeycomb vanadium series denitration preformed catalyst, and preparation method and use thereof |
| CN206296992U (en) * | 2016-12-08 | 2017-07-04 | 北京国电龙源环保工程有限公司 | A kind of hexagon denitrating catalyst extrusion die |
| CN109046320A (en) * | 2018-07-09 | 2018-12-21 | 上海纳米技术及应用国家工程研究中心有限公司 | Preparation process of honeycomb catalyst for coal-fired power plant denitrating flue gas and products thereof and application |
| CN110114135A (en) * | 2016-12-30 | 2019-08-09 | 巴斯夫欧洲公司 | A kind of extrusion honeycomb catalyst |
| CN114733502A (en) * | 2022-04-20 | 2022-07-12 | 河北威达蓝海环保科技股份有限公司 | Regeneration treatment process for titanium dioxide carrier raw material of waste reduction denitration catalyst in wide temperature range |
-
2022
- 2022-10-21 CN CN202211291073.1A patent/CN115672308A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101676024A (en) * | 2008-09-17 | 2010-03-24 | 晶锐瓷业（北京）有限公司 | Faviform ammonia-method selective-catalytic-reduction denitrified catalyst and preparation method thereof |
| CN201815314U (en) * | 2010-10-27 | 2011-05-04 | 山东电力研究院 | Honeycombed catalyst provided with regular hexagonal internal pore passage structure and used for SCR denitration technology |
| CN103212451A (en) * | 2013-04-19 | 2013-07-24 | 中电投远达环保工程有限公司 | Honeycomb catalyst unit and honeycomb catalyst module |
| CN105597730A (en) * | 2015-08-17 | 2016-05-25 | 中国石油大学(北京) | Honeycomb vanadium series denitration preformed catalyst, and preparation method and use thereof |
| CN105170136A (en) * | 2015-10-14 | 2015-12-23 | 浙江广翰环保科技股份有限公司 | High specific surface area honeycomb type denitration catalyst and preparation method thereof |
| CN206296992U (en) * | 2016-12-08 | 2017-07-04 | 北京国电龙源环保工程有限公司 | A kind of hexagon denitrating catalyst extrusion die |
| CN110114135A (en) * | 2016-12-30 | 2019-08-09 | 巴斯夫欧洲公司 | A kind of extrusion honeycomb catalyst |
| CN109046320A (en) * | 2018-07-09 | 2018-12-21 | 上海纳米技术及应用国家工程研究中心有限公司 | Preparation process of honeycomb catalyst for coal-fired power plant denitrating flue gas and products thereof and application |
| CN114733502A (en) * | 2022-04-20 | 2022-07-12 | 河北威达蓝海环保科技股份有限公司 | Regeneration treatment process for titanium dioxide carrier raw material of waste reduction denitration catalyst in wide temperature range |
Non-Patent Citations (1)
| Title |
|---|
| 虞君;: "SCR烟气脱硝催化剂生产工艺分析及应用探究", 中国石油和化工标准与质量, no. 15 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114733502A (en) * | 2022-04-20 | 2022-07-12 | 河北威达蓝海环保科技股份有限公司 | Regeneration treatment process for titanium dioxide carrier raw material of waste reduction denitration catalyst in wide temperature range |
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