CN116851003A - High-sulfur-resistance ultralow-temperature SCR denitration catalyst and preparation system thereof - Google Patents
High-sulfur-resistance ultralow-temperature SCR denitration catalyst and preparation system thereof Download PDFInfo
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- CN116851003A CN116851003A CN202311052329.8A CN202311052329A CN116851003A CN 116851003 A CN116851003 A CN 116851003A CN 202311052329 A CN202311052329 A CN 202311052329A CN 116851003 A CN116851003 A CN 116851003A
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- 239000003054 catalyst Substances 0.000 title claims abstract description 57
- 238000002360 preparation method Methods 0.000 title claims abstract description 20
- 238000002156 mixing Methods 0.000 claims abstract description 54
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims abstract description 40
- 229910052717 sulfur Inorganic materials 0.000 claims abstract description 40
- 239000011593 sulfur Substances 0.000 claims abstract description 40
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims abstract description 36
- 239000000463 material Substances 0.000 claims abstract description 32
- 239000008139 complexing agent Substances 0.000 claims abstract description 27
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 24
- 238000003756 stirring Methods 0.000 claims abstract description 18
- VKUHPHJANRZNIC-UHFFFAOYSA-M [O-2].[OH-].[Ho+3] Chemical compound [O-2].[OH-].[Ho+3] VKUHPHJANRZNIC-UHFFFAOYSA-M 0.000 claims abstract description 14
- MIVBAHRSNUNMPP-UHFFFAOYSA-N manganese(2+);dinitrate Chemical compound [Mn+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O MIVBAHRSNUNMPP-UHFFFAOYSA-N 0.000 claims abstract description 12
- 125000004108 n-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 claims abstract description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 11
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 claims abstract description 10
- 238000005303 weighing Methods 0.000 claims abstract description 4
- 238000007789 sealing Methods 0.000 claims description 50
- 238000010438 heat treatment Methods 0.000 claims description 46
- 239000000843 powder Substances 0.000 claims description 42
- 238000003892 spreading Methods 0.000 claims description 35
- 230000007480 spreading Effects 0.000 claims description 35
- 238000003860 storage Methods 0.000 claims description 19
- 239000007787 solid Substances 0.000 claims description 9
- 238000001816 cooling Methods 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- 238000001354 calcination Methods 0.000 claims description 3
- 238000001035 drying Methods 0.000 claims description 3
- 239000000284 extract Substances 0.000 claims description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 abstract description 22
- 239000011572 manganese Substances 0.000 abstract description 14
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 abstract description 11
- 239000003546 flue gas Substances 0.000 abstract description 11
- 229910002651 NO3 Inorganic materials 0.000 abstract description 9
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 abstract description 9
- 229910052689 Holmium Inorganic materials 0.000 abstract description 7
- KJZYNXUDTRRSPN-UHFFFAOYSA-N holmium atom Chemical compound [Ho] KJZYNXUDTRRSPN-UHFFFAOYSA-N 0.000 abstract description 7
- 229910021529 ammonia Inorganic materials 0.000 abstract description 4
- QGZKDVFQNNGYKY-UHFFFAOYSA-N ammonia Natural products N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 abstract description 4
- 229910021645 metal ion Inorganic materials 0.000 abstract description 4
- 230000002035 prolonged effect Effects 0.000 abstract description 4
- 239000000126 substance Substances 0.000 abstract description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 8
- 235000014676 Phragmites communis Nutrition 0.000 description 8
- 101150114468 TUB1 gene Proteins 0.000 description 6
- 230000009471 action Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 239000007788 liquid Substances 0.000 description 5
- 230000007246 mechanism Effects 0.000 description 5
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 4
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 4
- 229910052742 iron Inorganic materials 0.000 description 4
- 229910052748 manganese Inorganic materials 0.000 description 4
- 239000010936 titanium Substances 0.000 description 4
- 229910052719 titanium Inorganic materials 0.000 description 4
- JYTUFVYWTIKZGR-UHFFFAOYSA-N holmium oxide Inorganic materials [O][Ho]O[Ho][O] JYTUFVYWTIKZGR-UHFFFAOYSA-N 0.000 description 3
- OWCYYNSBGXMRQN-UHFFFAOYSA-N holmium(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Ho+3].[Ho+3] OWCYYNSBGXMRQN-UHFFFAOYSA-N 0.000 description 3
- 239000003112 inhibitor Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000004880 explosion Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000004480 active ingredient Substances 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000010531 catalytic reduction reaction Methods 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/002—Mixed oxides other than spinels, e.g. perovskite
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/8621—Removing nitrogen compounds
- B01D53/8625—Nitrogen oxides
- B01D53/8628—Processes characterised by a specific catalyst
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/80—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis
- B01F27/90—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with paddles or arms
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/90—Heating or cooling systems
- B01F35/93—Heating or cooling systems arranged inside the receptacle
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/70—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
- B01J23/76—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
- B01J23/84—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36 with arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
- B01J23/889—Manganese, technetium or rhenium
- B01J23/8892—Manganese
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2523/00—Constitutive chemical elements of heterogeneous catalysts
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
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Abstract
The application discloses a high sulfur-resistant ultralow-temperature SCR denitration catalyst and a preparation system thereof, wherein the catalyst comprises sol, a complexing agent and a sulfur-resistant agent, and the sulfur-resistant agent comprises the following components: weighing 20-25% of n-butyl titanate, 20-25% of ethanol, 10-15% of water, 5-15% of acetic acid, 10-15% of manganese nitrate, 5-10% of ferroammonia carboxyl complexing agent and 10-15% of holmium dioxide according to a proportion, mixing the materials at normal temperature, and continuously stirring for thirty minutes to form sol. According to the high sulfur-resistant ultralow-temperature SCR denitration catalyst and the preparation system thereof, the complexing agent is specifically a ferrous ammonia carboxyl complexing agent, multiple metal ions in the catalyst can be effectively complexed, n-butyl titanate, ethanol, water, acetic acid and manganese nitrate are mixed to react to form Mn/TiO2, the Mn/TiO2 can react with a nitrate-containing component in flue gas to remove the nitrate in the flue gas, the vulcanizing-resistant agent is specifically holmium dioxide, the oxide of holmium can react with sulfur to generate substances which are almost non-reacted with the Mn/TiO2, the sulfur-resistant performance of the catalyst is effectively improved, and the service life of a catalyst finished product can be prolonged.
Description
Technical Field
The application relates to the technical field of denitration catalysts, in particular to a high-sulfur-resistance ultralow-temperature SCR denitration catalyst and a preparation system thereof.
Background
The high sulfur-resistant ultralow-temperature SCR denitration catalyst is a novel catalyst, and can treat the flue gas at a lower temperature (about 150 ℃) to remove most of the nitrate in the flue gas.
According to publication No. CN105879879B, publication No. 2018.09.21, a high sulfur-resistant ultralow temperature SCR denitration catalyst is disclosed, wherein an oxide of titanium is used as a carrier, an oxide of manganese is used as an active ingredient, and an oxide of iron and an oxide of holmium are used as cocatalysts; wherein the molar ratio of iron, holmium, manganese and titanium elements in the catalyst is 0.1-0.4:0.01-0.2:0.3-0.5:1. Preferably, the molar ratio of iron, holmium, manganese and titanium elements in the catalyst is 0.2-0.4:0.05-0.1:0.4-0.5:1. The catalyst is added with a proper amount of holmium oxide, the molar ratio of iron, holmium, manganese and titanium elements in the catalyst is reasonably set, the prepared high sulfur-resistant ultralow-temperature SCR denitration catalyst has a low denitration reaction temperature and a wide catalytic reduction denitration activity temperature window, and the addition of the proper amount of holmium oxide effectively improves the sulfur-resistant performance of the catalyst, SO that the denitration activity can be maintained to be above 80% after 200ppm SO2 and 15% H2O are introduced at 120 ℃, and the denitration activity can be maintained to be above 65% after 400ppm SO2 and 15% H2O are introduced; meanwhile, the preparation method is simple and convenient and is easy to operate.
In the prior art comprising the above patent, when producing the high sulfur-resistant ultralow temperature SCR denitration catalyst, normal-temperature mixing of n-butyl titanate, ethanol, water, acetic acid and manganese nitrate is required to form transparent sol, standing for several days, cooling and solidifying the transparent sol to become black gel, roasting the gel to obtain powder, and then tabletting and forming to enable the powder to be put into use, but in the using process, sulfur in flue gas reacts with the denitration catalyst to generate other substances, and denitration work can not be continued.
Disclosure of Invention
The application aims to provide a high-sulfur-resistance ultralow-temperature SCR denitration catalyst and a preparation system thereof, and aims to solve the problem that a powdery complexing agent and a sulfur-resistance agent are difficult to uniformly mix in sol.
In order to achieve the above purpose, the application provides a high sulfur-resistant ultralow temperature SCR denitration catalyst, which comprises sol, a complexing agent and a sulfur-resistant agent, wherein:
s1, weighing 20-25% of n-butyl titanate, 20-25% of ethanol, 10-15% of water, 5-15% of acetic acid, 10-15% of manganese nitrate, 5-10% of a ferroammonia carboxyl complexing agent and 10-15% of holmium dioxide according to a proportion;
s2, mixing n-butyl titanate, ethanol, water, acetic acid and manganese nitrate in a proper proportion at normal temperature, and continuously stirring for thirty minutes to form sol;
s3, mixing the powdery ferroammonia carboxyl complexing agent and holmium dioxide into the sol, and stirring to fully mix the ferroammonia carboxyl complexing agent, the holmium dioxide and the sol;
s4, standing for a plurality of days, and cooling and solidifying the sol;
s5, placing the solidified sol in an environment of one hundred and ten ℃ for twelve hours of drying treatment to obtain a porous solid, and calcining the porous solid at a high temperature of five hundred ℃ for three hours;
s6, tabletting and forming the calcined solid to obtain the catalyst.
The preparation system of the high-sulfur-resistance ultralow-temperature SCR denitration catalyst is used for preparing the high-sulfur-resistance ultralow-temperature SCR denitration catalyst in the scheme and comprises a mixing barrel, wherein the mixing barrel is provided with:
a heating assembly including a plurality of heating rods movably mounted on the mixing tub and adapted to heat the sol;
pay-off subassembly, it includes roof and a plurality of movable mounting in spill the material pole on the roof, spill and be provided with a plurality of heating plates on the material pole, wherein:
the top plate moves to enable the spreading rod to insert and stir the sol, the heating plate heats the sol and air in the spreading rod, and the hot air is wrapped with powder and sprayed out by the spreading rod.
Preferably, a material storage cavity and an air cavity are arranged in the material scattering rod, an air outlet communicated with the air cavity and a discharge outlet communicated with the outside are formed in the material storage cavity, and the air outlet is opposite to the discharge outlet.
Preferably, a first sealing plate for sealing the air outlet is arranged in the material scattering rod, and air in the air cavity reaches preset air pressure to push the first sealing plate.
Preferably, the top plate is provided with a through hole right opposite to the storage cavity, a conveyor belt is arranged in the storage cavity, and a plurality of supporting plates for supporting powder are arranged on the belt surface of the conveyor belt.
Preferably, the mixing barrel is connected with a first connecting pipe in a threaded manner, and a pushing plate with a > type structure for stirring the powder on the top plate is movably arranged on the first connecting pipe.
Preferably, the bottom of the pushing plate is provided with an inclined elastic piece abutted against the top plate.
Preferably, the first connecting pipe is provided with a plurality of locking blocks for connecting the first connecting pipe with the top plate, the mixing barrel is provided with a first push plate in a sliding manner, the first connecting pipe rotates to enable the top plate to move downwards and rotate, and the spreading rod moves downwards and is pushed by the first push plate.
Preferably, the heating assembly includes a base plate mounted on the mixing tub, a plurality of heating rods are slidably mounted on the base plate, and the base plate rotates with the first connection pipe to move the heating rods.
Preferably, a cylinder is arranged on the mixing barrel, a piston is movably arranged in the cylinder, and the piston moves downwards along with the first connecting pipe and extracts air from the mixing barrel.
In the technical scheme, the high sulfur-resistant ultralow-temperature SCR denitration catalyst and the preparation system thereof provided by the application have the following beneficial effects: the complexing agent is specifically a ferrous ammonia carboxyl complexing agent, can effectively complex various metal ions in the catalyst, and can be used for carrying out mixed reaction on n-butyl titanate, ethanol, water, acetic acid and manganese nitrate to form Mn/TiO2, wherein Mn/TiO2 can be used for carrying out reaction with a nitrate-containing component in flue gas to remove nitrate in the flue gas, the anti-sulfidizing agent is specifically holmium dioxide, oxides of holmium can be used for carrying out reaction with sulfur to generate substances which are almost unreactive with Mn/TiO2, so that the sulfur resistance of the catalyst is effectively improved, and the service life of a catalyst finished product can be prolonged.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments described in the present application, and other drawings may be obtained according to these drawings for a person having ordinary skill in the art.
FIG. 1 is a schematic diagram of the overall structure provided by an embodiment of the present application;
FIG. 2 is a schematic diagram of a heating assembly according to an embodiment of the present application;
FIG. 3 is an enlarged view of FIG. 2 at A;
FIG. 4 is a schematic diagram of an explosion structure according to an embodiment of the present application;
FIG. 5 is an enlarged view of FIG. 4 at B;
FIG. 6 is a schematic view of an explosion structure at another angle according to an embodiment of the present application;
fig. 7 is a schematic view of an internal structure of a spreader lever according to an embodiment of the present application;
FIG. 8 is a schematic diagram of the internal structure of an air cavity according to an embodiment of the present application;
FIG. 9 is an enlarged view of FIG. 8 at C;
FIG. 10 is an enlarged view of FIG. 8 at D;
fig. 11 is a schematic structural diagram of a take-up reel according to an embodiment of the present application;
FIG. 12 is a schematic view illustrating the structure of the inside of a first connecting pipe according to an embodiment of the present application;
fig. 13 is a schematic structural diagram of a pushing plate according to an embodiment of the present application.
Reference numerals illustrate:
1. a mixing drum; 11. a feeding assembly; 111. a top plate; 112. a first connection pipe; 113. a locking piece; 114. a pushing plate; 1141. an elastic sheet; 115. a first mount; 116. a traction plate; 117. a sealing plate; 118. a first push plate; 119. a limiting block; 12. a spreading rod; 121. a storage cavity; 122. a conveyor belt; 123. a supporting plate; 124. a guide plate; 125. a stop block; 1251. a third pull rope; 126. an air cavity; 127. an air inlet; 128. an air outlet; 129. a first sealing plate; 1291. a reed; 13. a heating assembly; 131. a bottom plate; 132. a second mounting base; 133. a heating rod; 134. a second push plate; 135. a heating sheet; 136. a button; 1361. a second pull rope; 137. a second sealing plate; 138. a discharge port; 139. a first pull rope; 141. a cylinder; 142. a piston; 143. a second connection pipe; 144. a movable ring; 145. a take-up reel; 146. wedge blocks.
Detailed Description
In order to make the technical scheme of the present application better understood by those skilled in the art, the present application will be further described in detail with reference to the accompanying drawings.
Example 1
The high sulfur-resistant ultralow-temperature SCR denitration catalyst comprises sol, a complexing agent and a sulfur-resistant agent, wherein:
s1, weighing 20-25% of n-butyl titanate, 20-25% of ethanol, 10-15% of water, 5-15% of acetic acid, 10-15% of manganese nitrate, 5-10% of a ferroammonia carboxyl complexing agent and 10-15% of holmium dioxide according to a proportion;
s2, mixing n-butyl titanate, ethanol, water, acetic acid and manganese nitrate in a proper proportion at normal temperature, and continuously stirring for thirty minutes to form sol;
s3, mixing the powdery ferroammonia carboxyl complexing agent and holmium dioxide into the sol, and stirring to fully mix the ferroammonia carboxyl complexing agent, the holmium dioxide and the sol;
s4, standing for a plurality of days, and cooling and solidifying the sol;
s5, placing the solidified sol in an environment of one hundred and ten ℃ for twelve hours of drying treatment to obtain a porous solid, and calcining the porous solid at a high temperature of five hundred ℃ for three hours;
s6, tabletting and forming the calcined solid to obtain the catalyst.
Specifically, the complexing agent in the embodiment is a ferrous ammonia carboxyl complexing agent, so that various metal ions in the catalyst can be effectively complexed, the anti-sulfidizing agent is holmium dioxide, the sulfur resistance of the catalyst is effectively improved by holmium oxide, the service life of a catalyst finished product can be prolonged, n-butyl titanate, ethanol, water, acetic acid and manganese nitrate are mixed to react to form Mn/TiO2, and the Mn/TiO2 can react with a nitrate-containing component in flue gas to remove nitrate in the flue gas.
According to the technical scheme, the complexing agent is specifically a ferrous ammonia carboxyl complexing agent, various metal ions in the catalyst can be effectively complexed, n-butyl titanate, ethanol, water, acetic acid and manganese nitrate are mixed to react to form Mn/TiO2, mn/TiO2 can react with a nitrate-containing component in the flue gas to remove the nitrate in the flue gas, the anti-sulfidizing agent is specifically holmium dioxide, oxides of holmium can react with sulfur to generate substances which are almost unreactive with Mn/TiO2, the sulfur resistance of the catalyst is effectively improved, and the service life of a catalyst finished product can be prolonged.
Example two
As shown in fig. 1-13, a preparation system of a high sulfur-resistant ultralow temperature SCR denitration catalyst is used for preparing the high sulfur-resistant ultralow temperature SCR denitration catalyst described in the first embodiment, and the preparation system comprises a mixing barrel 1, wherein the mixing barrel 1 is provided with:
a heating assembly 13 including a plurality of heating rods 133 movably installed on the mixing tub 1 for heating the sol;
the feeding assembly 11 comprises a top plate 111 and a plurality of material scattering rods 12 movably mounted on the top plate 111, wherein a plurality of heating plates 135 are arranged on the material scattering rods 12, and the feeding assembly comprises:
the top plate 111 moves to insert and agitate the spreading rod 12, and the heating plate 135 heats the sol and air inside the spreading rod 12, and the hot air is sprayed from the spreading rod 12 while holding the powder.
Specifically, the mixing barrel 1 is provided with a liquid inlet pipe and a liquid outlet pipe.
Further, during the production of the catalyst, firstly, the sol is prepared and is sent into the mixing drum 1 through the liquid inlet pipe, then the powdered complexing agent and the sulfur inhibitor are put into the spreading rod 12, the heating component 13 works, the heating rod 133 moves in the mixing drum 1 and heats the sol in the mixing drum 1, the fluidity of the sol is improved, the top plate 111 moves downwards with the spreading rod 12, the spreading rod 12 inserts the sol and moves, the sol is stirred, the heating plate on the spreading rod 12 heats the sol and the air in the spreading rod 12, after the pressure of the hot air in the spreading rod 12 reaches a preset value, the hot air is sprayed out of the spreading rod 12 with the powder, the powder moves rapidly in the sol, a larger range can be covered, and the spreading rod 12 and the heating rod 133 are matched to stir the sol, so that the powdered complexing agent and the sulfur inhibitor are uniformly distributed in the sol, and the subsequent processing can be performed.
As still another embodiment of the present application, the material spreading rod 12 is provided with a material storage cavity 121 and an air cavity 126 inside, the material storage cavity 121 is provided with an air outlet 128 communicated with the air cavity 126 and a discharge outlet 138 communicated with the outside, and the air outlet 128 is opposite to the discharge outlet 138.
Specifically, when the catalyst is produced, the top plate 111 moves down with the spreading rod 12, the spreading rod 12 inserts the sol and moves, the sol is stirred, the heating plate on the spreading rod 12 heats the sol and air in the air cavity 126, after the pressure of the hot air in the air cavity 126 reaches a predetermined value, the hot air is ejected from the air outlet 128 and enters the storage cavity 121, the hot air is ejected from the opposite discharge hole 138 with powder, and the powder moves rapidly in the sol, so that a larger range can be covered.
As a further embodiment of the present application, a first sealing plate 129 for sealing the air outlet 128 is provided inside the spreader lever 12, and air inside the air chamber 126 reaches a predetermined air pressure to push the first sealing plate 129.
Specifically, a torsion spring is arranged between the first sealing plate 129 and the material scattering rod 12, a reed 1291 for fixing the first sealing plate 129 is arranged on the material scattering rod 12, an air inlet 127 is formed in the top of the air cavity 126, a second sealing plate 137 for blocking the air inlet 127 is arranged on the material scattering rod 12, a spring is arranged between the second sealing plate 137 and the material scattering rod 12, a take-up reel 145 is movably arranged in the material scattering rod 12, a first pull rope 139 is arranged between the take-up reel 145 and the second sealing plate 137, a movable ring 144 is arranged at the axle center of the take-up reel 145, a ratchet and pawl mechanism is arranged between the movable ring 144 and the take-up reel 145, the movable ring 144 is sleeved on the first sealing plate 129, and a wedge block 146 for pushing the movable ring 144 is arranged in the material scattering rod 12.
Further, the heating plate 135 heats the air inside the air cavity 126, the air expands when being heated and pushes the first sealing plate 129 to rotate towards the outer side of the air cavity 126, when the air pressure of the hot air inside the air cavity 126 reaches a preset value, the first sealing plate 129 pushes the reed 1291, the reed 1291 deforms and is staggered with the first sealing plate 129, the first sealing plate 129 overcomes the resistance of the torsion spring to rotate, the air outlet 128 is opened, the movable ring 144 is sleeved on the first sealing plate 129 under the action of gravity, in the process, the first sealing plate 129 drives the movable ring 144 to rotate, the ratchet and pawl mechanism between the movable ring 144 and the take-up reel 145 does not transfer force, the second sealing plate 137 seals the air inlet 127, and the hot air is ejected from the air outlet 128 and is ejected from the discharge port 138 with the powder in the storage cavity 121; after the material scattering is completed, the air pressure in the air cavity 126 is reduced, the air outlet 128 is gradually sealed by the first sealing plate 129 under the action of the torsion spring, at this time, the first sealing plate 129 drives the movable ring 144 to rotate, the ratchet pawl mechanism between the movable ring 144 and the take-up reel 145 transfers force, the take-up reel 145 is driven to rotate, the take-up reel 145 is wound with the first pull rope 139, the first pull rope 139 drives the second sealing plate 137 to move, the air inlet 127 is opened, air is supplemented into the air cavity 126, the first sealing plate 129 continues to rotate, the reed 1291 deforms and is reinserted into the first sealing plate 129, at this time, the movable ring 144 is pushed by the wedge block 146 to be separated from the first sealing plate 129, the spring pushes the second sealing plate 137 to seal the air inlet 127, and the air cavity 126 is restored to a closed state.
As a further embodiment of the present application, the top plate 111 is provided with a through hole facing the storage cavity 121, a conveyor belt 122 is disposed in the storage cavity 121, and a plurality of supporting plates 123 for supporting powder are disposed on a belt surface of the conveyor belt 122.
Specifically, the mixing tank 1 is provided with a feed inlet corresponding to the through holes on the top plate 111 one by one, the spreading rod 12 is provided with a first mounting seat 115, the top plate 111 is provided with a mortise adapted to the first mounting seat 115, the first mounting seat 115 is provided with a through hole opposite to the storage cavity 121, and a guide plate 124 for guiding powder to one side of the conveyor belt 122 is arranged in the first mounting seat 115.
Further, when adding the powder material, the powder is fed into the first mounting seat 115 from the feeding hole, falls onto the supporting plate 123 at one side of the conveyor belt 122 along the guiding plate 124, presses the supporting plate 123 to move downwards, then is replaced by the other supporting plate 123, two adjacent supporting plates 123 and the belt surface and the storage cavity 121 form a cavity, the powder amount in each cavity is approximately the same, and the lowest cavity faces the air outlet 128 and the discharging hole 138; when the air pressure in the air chamber 126 reaches a predetermined value, hot air is ejected from the air outlet 128, carrying the powder in the chamber to be ejected from the discharge port 138, the lower chamber is empty, and the upper chamber is replenished for the next spreading work.
As a further embodiment of the present application, the mixing tub 1 is screwed with a first connecting pipe 112, and a pushing plate 114 having a > type structure for stirring the powder on the top plate 111 is movably provided on the first connecting pipe 112.
Specifically, when the first connecting pipe 112 rotates relative to the top plate 111, the vertex of the pushing plate 114 with the structure of the figure passes through the centers of the multiple through holes on the top plate 111 in sequence, and a hand wheel is disposed on the first connecting pipe 112.
Further, when the powder is filled into the spreading rod 12, the equal amount of powder is sent to the top plate 111 from the feeding port, the first connecting pipe 112 is rotated relative to the top plate 111, the pushing plate 114 pushes the powder on the top plate 111, the top points of the pushing plate 114 with the structure of > sequentially pass through the circle centers of the through holes on the top plate 111, the powder on the top plate 111 is collected and sent into the spreading rod 12, and the proportion of the complexing agent and the sulfur resisting agent in the catalyst finished product is ensured.
As a further embodiment of the application, the bottom of the stripper plate 114 is provided with a sloped resilient tab 1141 that abuts against the top plate 111.
Specifically, when the first connecting pipe 112 is rotated, the first connecting pipe 112 moves downward along the thread line on the mixing drum 1, and the elastic piece 1141 at the bottom of the pushing plate 114 can ensure that the pushing plate 114 is always in contact with the top surface of the top plate 111, so that powder on the top surface of the top plate 111 can be sent to the spreading rod 12.
As a further embodiment of the present application, a plurality of locking pieces 113 are provided on the first connecting tube 112 to connect it with the top plate 111, and a first push plate 118 is slidably provided on the mixing tub 1, and the first connecting tube 112 is rotated to move the top plate 111 downward and rotate, and the spreader bar 12 is moved downward and pushed by the first push plate 118.
Specifically, the inside slip of tongue-and-groove on roof 111 is provided with traction plate 116, first mount pad 115 rotates and installs on traction plate 116, be provided with the spring between traction plate 116 and the roof 111, be provided with stopper 119 on the symmetry on the first push pedal 118, be provided with the spring between stopper 119 and the mixing drum 1, set up the spout with the stopper 119 adaptation on the inner wall of mixing drum 1, be provided with the spring between locking piece 113 and the first connecting tube 112, the activity is provided with button 136 on the first connecting tube 112, be provided with the second stay 1361 between button 136 and the locking piece 113, be provided with rotation damping between roof 111 and the mixing drum 1.
Further, when the catalyst is produced, the equal amount of powder is put into a plurality of feed inlets, at the moment, the hand wheel is rotated to drive the first connecting pipe 112 to rotate, at the moment, the first connecting pipe 112 moves downwards along the thread line on the mixing drum 1, the elastic sheet 1141 at the bottom of the pushing plate 114 pushes the powder on the top plate 111 to fall into the spreading rod 12, the first connecting pipe 112 continues to rotate, the locking piece 113 on the first connecting pipe 112 is embedded into the top plate 111, at the moment, the top plate 111 and the first connecting pipe 112 are fixed together, the first connecting pipe 112 moves downwards along the thread line on the mixing drum 1, drives the top plate 111 to rotate and simultaneously moves downwards, the spreading rod 12 at the bottom of the top plate 111 abuts against the first push plate 118, and is pushed by the first push plate 118 to move on the bottom surface of the top plate 111, the traction plate 116 is pulled by the spring, so that the first mounting seat 115 on the spreading rod 12 is tightly attached to the first push plate 118 and rubbed by the first push plate 118, the first mounting seat 115 rotates relative to the traction plate 116, so that the spreading rod 12 moves while rotating, gel in the mixing barrel 1 can be better stirred, the first push plate 118 is limited by the limiting block 119, and the first push plate 118 moves downwards along with the top plate 111 but does not rotate, so that the spreading rod 12 can be pushed to move.
As still another embodiment of the present application further provided, the heating assembly 13 includes a base plate 131 mounted on the mixing tub 1, a plurality of heating rods 133 are slidably mounted on the base plate 131, and the base plate 131 rotates with the first connection pipe 112 to move the heating rods 133.
Specifically, the bottom of first connecting pipe 112 is provided with the telescopic link, is provided with second mount pad 132 on the heating rod 133, has seted up the tongue-and-groove that supplies heating rod 133 to remove on the bottom plate 131, and the inside activity of tongue-and-groove is provided with the traction plate 116, is provided with the spring between traction plate 116 and the bottom plate 131, and second mount pad 132 rotates to be installed on traction plate 116, is provided with the second push pedal 134 that is used for supporting pushing away second mount pad 132 on the mixing drum 1.
Further, while the first connecting pipe 112 rotates, the first connecting pipe 112 drives the bottom plate 131 to rotate through the telescopic rod, the bottom plate 131 drives the heating rod 133 to move, the second mounting seat 132 on the heating rod 133 is clung to the second push plate 134 under the action of the traction plate 116 and the matching spring, and is pushed by the second push plate 134 to move like the center of the mixing barrel 1, and the second mounting seat 132 rubs with the second push plate 134, so that the second mounting seat 132 rotates relative to the traction plate 116, and then drives the heating rod 133 to rotate, so that the heating rod 133 stirs the gel while heating the sol, so that the powder and the gel are mixed.
As still another embodiment provided further by the present application, a cylinder 141 is provided on the mixing tub 1, and a piston 142 is movably provided inside the cylinder 141, and the piston 142 moves down with the first connection pipe 112 and draws air from the mixing tub 1.
Specifically, the piston 142 is provided with a second connecting pipe 143, the end part of the first connecting pipe 112 is rotatably mounted on the second connecting pipe 143, a through hole is formed in the part of the second connecting pipe 143 located inside the cylinder 141, and a through hole is also formed in the part of the first connecting pipe 112 located below the top plate 111, so that the mixing barrel 1 is communicated with the inner space of the cylinder 141, the top plate 111 is provided with a sealing plate 117, and the sealing plate 117 is specifically a telescopic plate clung to the first mounting seat 115;
the inside of spilling material pole 12 is provided with the dog 125 that is used for blockking the layer board 123 and removes, and the top of dog 125 is provided with the slope, is provided with the spring between dog 125 and the spill material pole 12, is provided with the third stay 1251 between dog 125 and the first shrouding 129.
Further, during the production of the catalyst, firstly, preparing the sol, sending the sol into the mixing barrel 1 through the liquid inlet pipe, then equally dividing the powder mixed by the complexing agent and the sulfur inhibitor into a plurality of parts, respectively throwing the powder into a plurality of feed inlets, enabling the powder to fall onto the top plate 111, rotating the hand wheel at the moment to drive the first connecting pipe 112 to rotate, driving the bottom plate 131 to rotate through the telescopic rod by the first connecting pipe 112, driving the heating rod 133 to move by the bottom plate 131, enabling the second mounting seat 132 on the heating rod 133 to be tightly attached to the second push plate 134 under the action of the traction plate 116 matched with the spring, pushing the center of the mixing barrel 1 by the second push plate 134 to move, and enabling the second mounting seat 132 to rub with the second push plate 134 to enable the second mounting seat 132 to rotate relative to the traction plate 116, and then driving the heating rod 133 to rotate, and enabling the heating rod 133 to stir the gel while heating the sol;
simultaneously, the pushing plate 114 on the first connecting pipe 112 rotates, the elastic sheet 1141 at the bottom of the pushing plate 114 stirs the powder on the top plate 111, so that the powder enters the first mounting seat 115 and falls onto the supporting plate 123 at one side of the conveying belt 122 along the guide plate 124, the powder presses the supporting plate 123 to move downwards until the stop block 125 stops the downward movement of the supporting plate 123, at the moment, the elastic sheet 1141 presses the powder, the powder presses the supporting plate 123 to move along the slope on the stop block 125 until the supporting plate 123 is staggered with the stop block 125, then the other supporting plate 123 is used for replacing, two adjacent supporting plates 123, the belt surface and the storage cavity 121 form a sum cavity, the powder amount inside each cavity is approximately the same, and the lowest cavity faces the air outlet 128 and the discharge outlet 138;
the first connecting pipe 112 continues to rotate, move downwards along the thread line on the mixing drum 1, the locking piece 113 on the first connecting pipe 112 is embedded into the mortise hole on the top plate 111, the locking piece 113 fixes the first connecting pipe 112 and the top plate 111 together, the top plate 111 rotates along with the first connecting pipe 112 and moves downwards, the material scattering rod 12 at the bottom of the top plate 111 abuts against the first push plate 118 and is pushed by the first push plate 118 to move on the bottom surface of the top plate 111, the traction plate 116 is pulled by the spring, the first mounting seat 115 on the material scattering rod 12 is tightly attached to the first push plate 118, the first mounting seat 115 is rubbed by the first push plate 118 and rotates relative to the traction plate 116, so that the material scattering rod 12 moves and rotates simultaneously, gel in the mixing drum 1 can be stirred better, the first push plate 118 is limited by the limiting block 119, the first push plate 118 moves downwards along with the top plate 111, but does not rotate, and can push the material scattering rod 12;
the heating plate 135 on the spreading rod 12 heats the sol, the fluidity of the sol is increased, the air in the air cavity 126 is heated and expanded, the air pushes the first sealing plate 129 to rotate towards the outer side of the air cavity 126, when the air pressure of the hot air in the air cavity 126 reaches a preset value, the first sealing plate 129 pushes the reed 1291, the reed 1291 deforms and is staggered with the first sealing plate 129, the first sealing plate 129 rotates against the resistance of the torsion spring, the air outlet 128 is opened, the movable ring 144 is sleeved on the first sealing plate 129 under the action of gravity, in the process, the first sealing plate 129 drives the movable ring 144 to rotate, the ratchet and pawl mechanism between the movable ring 144 and the take-up reel 145 does not transfer force, the second sealing plate 137 seals the air inlet 127, the hot air is ejected from the air outlet 128 and carries powder in the storage cavity 121 to be ejected from the discharge port 138, the first sealing plate 129 drives the stop 125 to move through the third pull rope 1251, the stop 125 is staggered with the support plate 123, the upper push plate is pressed down by the powder, and the other cavity filled with the powder is opposite to the air outlet 128 and the discharge port 138;
after the material scattering is finished, the air pressure in the air cavity 126 is reduced, the first sealing plate 129 gradually seals the air outlet 128 under the action of the torsion spring, at this time, the first sealing plate 129 drives the movable ring 144 to rotate, a ratchet pawl mechanism between the movable ring 144 and the take-up reel 145 drives the take-up reel 145 to rotate, the take-up reel 145 winds up the first pull rope 139, the first pull rope 139 drives the second sealing plate 137 to move, the air inlet 127 is opened, cold air is sucked from above the sealing plate 117, the air in the air cavity 126 is supplemented, the first sealing plate 129 continues to rotate, the reed 1291 deforms and reinserts into the first sealing plate 129, at this time, the movable ring 144 is pushed by the wedge block 146 to be separated from the first sealing plate 129, the spring pushes the second sealing plate 137 to seal the air inlet 127, the air cavity 126 is restored to a closed state, the third pull rope 1251 is loosened, the stop block 125 continues to move under the pushing of the spring, and the material scattering rod 12 and the heating rod 133 cooperate to stir the sol until the powder is uniformly mixed in the sol;
while the first connecting pipe 112 moves downwards, the first connecting pipe 112 pulls the second connecting pipe 143 to move downwards and drives the piston 142 to move downwards, negative pressure is formed inside the cylinder 141, air is sucked from the sealed mixing barrel 1, the air pressure in the mixing barrel 1 is reduced, bubbles in the sol are easier to break, and the gas in the sol is easier to release, so that stirring work can be carried out;
then, the hand wheel is reversely rotated to drive the first connecting pipe 112 to move upwards, after the first connecting pipe is moved to the initial position, the button 136 is pressed, the button 136 drives the locking piece 113 to move through the second pull rope 1361, the locking piece 113 returns to the first connecting pipe 112, the first connecting pipe 112 is separated from the top plate 111, at the moment, the mixed sol can be discharged from the liquid outlet pipe, and the mixed sol is led to a specific container to stand for curing.
While certain exemplary embodiments of the present application have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that modifications may be made to the described embodiments in various different ways without departing from the spirit and scope of the application. Accordingly, the drawings and description are to be regarded as illustrative in nature and not as restrictive of the scope of the application, which is defined by the appended claims.
Claims (10)
1. The high sulfur-resistant ultralow-temperature SCR denitration catalyst is characterized by comprising sol, a complexing agent and a sulfur-resistant agent, wherein:
s1, weighing 20-25% of n-butyl titanate, 20-25% of ethanol, 10-15% of water, 5-15% of acetic acid, 10-15% of manganese nitrate, 5-10% of a ferroammonia carboxyl complexing agent and 10-15% of holmium dioxide according to a proportion;
s2, mixing n-butyl titanate, ethanol, water, acetic acid and manganese nitrate in a proper proportion at normal temperature, and continuously stirring for thirty minutes to form sol;
s3, mixing the powdery ferroammonia carboxyl complexing agent and holmium dioxide into the sol, and stirring to fully mix the ferroammonia carboxyl complexing agent, the holmium dioxide and the sol;
s4, standing for a plurality of days, and cooling and solidifying the sol;
s5, placing the solidified sol in an environment of one hundred and ten ℃ for twelve hours of drying treatment to obtain a porous solid, and calcining the porous solid at a high temperature of five hundred ℃ for three hours;
s6, tabletting and forming the calcined solid to obtain the catalyst.
2. A preparation system of a high sulfur-resistant ultralow temperature SCR denitration catalyst, which is used for preparing the high sulfur-resistant ultralow temperature SCR denitration catalyst as set forth in claim 1, and is characterized by comprising a mixing barrel (1), wherein the mixing barrel (1) is provided with:
a heating assembly (13) comprising a plurality of heating rods (133) movably mounted on the mixing drum (1) and adapted to heat the sol;
pay-off subassembly (11), its include roof (111) and a plurality of movable mounting in spill material pole (12) on roof (111), spill and be provided with a plurality of heating plates (135) on material pole (12), wherein:
the top plate (111) moves to enable the spreading rod (12) to be inserted into and stir the sol, the heating plate (135) heats the sol and air in the spreading rod (12), and the hot air is wrapped with powder to be sprayed out of the spreading rod (12).
3. The preparation system of the high sulfur-resistant ultralow-temperature SCR denitration catalyst according to claim 2, wherein a storage cavity (121) and an air cavity (126) are arranged in the material scattering rod (12), an air outlet (128) communicated with the air cavity (126) and a discharge outlet (138) communicated with the outside are formed in the storage cavity (121), and the air outlet (128) is opposite to the discharge outlet (138).
4. A preparation system of a high sulfur-resistant ultralow temperature SCR denitration catalyst according to claim 3, wherein a first sealing plate (129) for sealing the air outlet (128) is arranged in the material scattering rod (12), and air in the air cavity (126) reaches a predetermined air pressure to push the first sealing plate (129).
5. The preparation system of the high sulfur-resistant ultralow-temperature SCR denitration catalyst according to claim 3, wherein the top plate (111) is provided with a through hole which is opposite to the storage cavity (121), a conveyor belt (122) is arranged in the storage cavity (121), and a plurality of supporting plates (123) for supporting powder are arranged on the belt surface of the conveyor belt (122).
6. The preparation system of the high sulfur-resistant ultralow-temperature SCR denitration catalyst according to claim 2, wherein a first connecting pipe (112) is connected to the mixing barrel (1) in a threaded manner, and a pushing plate (114) with a > type structure for stirring powder on the top plate (111) is movably arranged on the first connecting pipe (112).
7. The preparation system of the high sulfur tolerant ultra-low temperature SCR denitration catalyst according to claim 6, wherein the bottom of the pushing plate (114) is provided with an inclined elastic piece (1141) which abuts against the top plate (111).
8. The preparation system of the high sulfur-resistant ultralow temperature SCR denitration catalyst according to claim 6, wherein a plurality of locking blocks (113) for connecting the first connecting pipe (112) with the top plate (111) are arranged on the first connecting pipe (112), a first pushing plate (118) is slidably arranged on the mixing drum (1), the first connecting pipe (112) rotates to enable the top plate (111) to move downwards and rotate, and the spreading rod (12) moves downwards and is pushed by the first pushing plate (118).
9. The preparation system of the high sulfur tolerant ultra-low temperature SCR denitration catalyst according to claim 6, wherein the heating assembly (13) comprises a base plate (131) mounted on the mixing tub (1), a plurality of heating rods (133) are slidably mounted on the base plate (131), and the base plate (131) rotates with the first connecting tube (112) to move the heating rods (133).
10. The preparation system of the high sulfur-resistant ultralow temperature SCR denitration catalyst according to claim 6, wherein a cylinder (141) is arranged on the mixing barrel (1), a piston (142) is movably arranged in the cylinder (141), and the piston (142) moves downwards along with the first connecting pipe (112) and extracts air from the mixing barrel (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311052329.8A CN116851003A (en) | 2023-08-21 | 2023-08-21 | High-sulfur-resistance ultralow-temperature SCR denitration catalyst and preparation system thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311052329.8A CN116851003A (en) | 2023-08-21 | 2023-08-21 | High-sulfur-resistance ultralow-temperature SCR denitration catalyst and preparation system thereof |
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| CN116851003A true CN116851003A (en) | 2023-10-10 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014079683A (en) * | 2012-10-15 | 2014-05-08 | Babcock-Hitachi Co Ltd | Denitration catalyst and method for producing the same |
| CN105879879A (en) * | 2016-05-23 | 2016-08-24 | 东南大学 | High-sulfur-resistant ultralow-temperature SCR (Selective Catalytic Reduction) denitration catalyst and preparation method thereof |
| CN112844374A (en) * | 2021-01-22 | 2021-05-28 | 上海应用技术大学 | Mn-Ce-Ti oxide aerogel denitration catalyst and preparation method and application thereof |
| CN216499358U (en) * | 2021-12-24 | 2022-05-13 | 安徽华钛高新材料有限公司 | Reation kettle is used in catalyst production |
| CN219399848U (en) * | 2023-04-20 | 2023-07-25 | 华电青岛环保技术有限公司 | Mixing arrangement is used in denitration catalyst production |
-
2023
- 2023-08-21 CN CN202311052329.8A patent/CN116851003A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014079683A (en) * | 2012-10-15 | 2014-05-08 | Babcock-Hitachi Co Ltd | Denitration catalyst and method for producing the same |
| CN105879879A (en) * | 2016-05-23 | 2016-08-24 | 东南大学 | High-sulfur-resistant ultralow-temperature SCR (Selective Catalytic Reduction) denitration catalyst and preparation method thereof |
| CN112844374A (en) * | 2021-01-22 | 2021-05-28 | 上海应用技术大学 | Mn-Ce-Ti oxide aerogel denitration catalyst and preparation method and application thereof |
| CN216499358U (en) * | 2021-12-24 | 2022-05-13 | 安徽华钛高新材料有限公司 | Reation kettle is used in catalyst production |
| CN219399848U (en) * | 2023-04-20 | 2023-07-25 | 华电青岛环保技术有限公司 | Mixing arrangement is used in denitration catalyst production |
Non-Patent Citations (1)
| Title |
|---|
| 刘海龙等: "脱硫脱硝一体化的研究现状", 环境与发展, pages 1 * |
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