CN111351042A - Gas infrared catalytic fiber layer and preparation method thereof - Google Patents
Gas infrared catalytic fiber layer and preparation method thereof Download PDFInfo
- Publication number
- CN111351042A CN111351042A CN202010271939.7A CN202010271939A CN111351042A CN 111351042 A CN111351042 A CN 111351042A CN 202010271939 A CN202010271939 A CN 202010271939A CN 111351042 A CN111351042 A CN 111351042A
- Authority
- CN
- China
- Prior art keywords
- layer
- fiber layer
- catalytic
- fuel gas
- platinum
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000003197 catalytic effect Effects 0.000 title claims abstract description 73
- 239000000835 fiber Substances 0.000 title claims abstract description 68
- 238000002360 preparation method Methods 0.000 title claims abstract description 9
- 239000002737 fuel gas Substances 0.000 claims abstract description 32
- 238000010438 heat treatment Methods 0.000 claims abstract description 30
- 239000010410 layer Substances 0.000 claims description 198
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 65
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 claims description 50
- 238000003756 stirring Methods 0.000 claims description 45
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 40
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 37
- 229910021389 graphene Inorganic materials 0.000 claims description 37
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 34
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 30
- 239000002244 precipitate Substances 0.000 claims description 30
- 239000007789 gas Substances 0.000 claims description 24
- 235000019441 ethanol Nutrition 0.000 claims description 20
- 229910052697 platinum Inorganic materials 0.000 claims description 17
- CLSUSRZJUQMOHH-UHFFFAOYSA-L platinum dichloride Chemical compound Cl[Pt]Cl CLSUSRZJUQMOHH-UHFFFAOYSA-L 0.000 claims description 15
- 238000006243 chemical reaction Methods 0.000 claims description 14
- 239000002344 surface layer Substances 0.000 claims description 12
- 239000006185 dispersion Substances 0.000 claims description 11
- 229910052751 metal Inorganic materials 0.000 claims description 11
- 239000002184 metal Substances 0.000 claims description 11
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims description 10
- 235000011114 ammonium hydroxide Nutrition 0.000 claims description 10
- 238000001125 extrusion Methods 0.000 claims description 10
- 238000001914 filtration Methods 0.000 claims description 10
- GIGQFSYNIXPBCE-UHFFFAOYSA-N alumane;platinum Chemical compound [AlH3].[Pt] GIGQFSYNIXPBCE-UHFFFAOYSA-N 0.000 claims description 9
- 238000007084 catalytic combustion reaction Methods 0.000 claims description 7
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 6
- 239000001301 oxygen Substances 0.000 claims description 6
- 229910052760 oxygen Inorganic materials 0.000 claims description 6
- 239000003054 catalyst Substances 0.000 claims description 5
- 238000002156 mixing Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 8
- 238000000034 method Methods 0.000 abstract description 7
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 abstract description 4
- 230000018044 dehydration Effects 0.000 abstract description 4
- 238000006297 dehydration reaction Methods 0.000 abstract description 4
- 238000005189 flocculation Methods 0.000 abstract description 4
- 230000016615 flocculation Effects 0.000 abstract description 4
- NFOHLBHARAZXFQ-UHFFFAOYSA-L platinum(2+);dihydroxide Chemical compound O[Pt]O NFOHLBHARAZXFQ-UHFFFAOYSA-L 0.000 abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 4
- 238000006555 catalytic reaction Methods 0.000 description 14
- 229910002804 graphite Inorganic materials 0.000 description 13
- 239000010439 graphite Substances 0.000 description 13
- -1 graphite alkene Chemical class 0.000 description 13
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 12
- 230000005855 radiation Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 239000000919 ceramic Substances 0.000 description 2
- 238000005485 electric heating Methods 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000000265 homogenisation Methods 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/46—Details, e.g. noise reduction means
-
- 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
- B01J23/38—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals
- B01J23/40—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals of the platinum group metals
- B01J23/42—Platinum
-
- B01J35/58—
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/02—Layer formed of wires, e.g. mesh
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form
- B32B3/02—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by features of form at particular places, e.g. in edge regions
- B32B3/08—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by features of form at particular places, e.g. in edge regions characterised by added members at particular parts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
- B32B9/005—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising one layer of ceramic material, e.g. porcelain, ceramic tile
- B32B9/007—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising one layer of ceramic material, e.g. porcelain, ceramic tile comprising carbon, e.g. graphite, composite carbon
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
- B32B9/04—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/12—Radiant burners
- F23D14/18—Radiant burners using catalysis for flameless combustion
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/12—Radiant burners
- F23D14/18—Radiant burners using catalysis for flameless combustion
- F23D14/181—Radiant burners using catalysis for flameless combustion with carbon containing radiating surface
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
- B32B2262/10—Inorganic fibres
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
- B32B2262/10—Inorganic fibres
- B32B2262/106—Carbon fibres, e.g. graphite fibres
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/30—Properties of the layers or laminate having particular thermal properties
- B32B2307/302—Conductive
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
Abstract
The invention belongs to the field of catalytic heating, and particularly relates to a fuel gas infrared catalytic fiber layer and a preparation method thereof. The invention solves the problem of weak adhesion of the existing catalytic fiber layer, utilizes the flocculation effect of aluminum hydroxide to disperse platinum hydroxide in a staggered manner, and utilizes water vapor to open gaps in the dehydration process to form a uniform microporous structure.
Description
Technical Field
The invention belongs to the field of catalytic heating, and particularly relates to a fuel gas infrared catalytic fiber layer and a preparation method thereof.
Background
The infrared radiation heating technology generally adopted at home and abroad at present basically takes electric heating as heating energy, even the most advanced electric heating high infrared radiation technology in the world at present has high investment cost, high management and maintenance requirements, high operation cost, short service life and high energy consumption, the adopted high infrared quartz glass tube is easy to damage, and various potential safety hazards such as electric wire leakage, short circuit and the like are easy to generate in a circuit, so that a user originally adopting the electric infrared radiation heating technology cannot use safely without worry, and the infrared radiation heating technology cannot completely pass the use requirements and use standards specified by new safety standards in China as industrial application.
Chinese patent publication No. CN109126775A discloses a fuel gas infrared catalytic fiber layer and a method for preparing the same, wherein the fuel gas infrared catalytic fiber layer is prepared by loading a hot platinum catalyst on the surface of ceramic fibers (with a diameter of 3-4 μm) by an impregnation method, so that the contact area between the catalyst and reactants is increased during catalytic reaction, the catalytic reaction is more sufficient, and simultaneously the generated heat is absorbed by the ceramic fibers and emits infrared radiation. Meanwhile, the heat generated by the reaction ensures the smooth proceeding of the subsequent catalytic reaction. Although the fiber layer of the technical scheme can play the effect of gas infrared catalytic combustion, the platinum particles fall off along with the prolonging of the service time, so that the secondary pollution is caused.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a fuel gas infrared catalytic fiber layer, which solves the problem that the existing catalytic fiber layer is not strong in adhesion, platinum hydroxide is dispersed in a staggered mode by utilizing the flocculation effect of aluminum hydroxide, and gaps are opened by utilizing water vapor in the dehydration process to form a uniform microporous structure.
In order to achieve the technical purpose, the technical scheme of the invention is as follows:
the utility model provides an infrared catalytic fiber layer of gas, includes graphite alkene top layer and aluminium oxide catalysis layer, the aluminium oxide catalysis layer adopts platinum doping active aluminium oxide fibrous layer, the graphite alkene top layer adopts graphite alkene and aluminium oxide to mix and forms, and graphite alkene all has good heat conduction characteristic with active aluminium, forms crisscross conduction structure, with the surface temperature homogenization, the homogeneity of effectual promotion temperature, simultaneously aluminium oxide not only has good heat conductivility, and gamma type aluminium oxide is the porous material that active high adsorption capacity is strong moreover, and both combine not only to have increased the oxygen adsorption capacity, can keep the air circulation nature moreover.
The gas infrared catalytic fiber layer is placed in an oxygen-enriched environment for standing for 2-4 hours before use.
The preparation method of the fuel gas infrared catalytic fiber layer comprises the following steps:
step 1, adding platinum chloride into absolute ethyl alcohol, and uniformly stirring to form a platinum alcohol solution, wherein the concentration of the platinum chloride in the absolute ethyl alcohol is 10-30g/L, and the stirring speed is 1000-2000 r/min;
step 4, placing the second mixed precipitate into a mold, extruding at constant temperature to form a first plate layer structure, then flatly paving the first mixed precipitate on the surface of the first film layer structure, and extruding to form a second plate layer structure to obtain a prefabricated fiber layer, wherein the temperature of the constant-temperature extrusion is 90-100 ℃, the pressure is 0.3-0.5MPa, the pressure of the extrusion is 0.3-0.5MPa, and the temperature is 100-;
step 5, adding the prefabricated fiber layer into a reaction kettle to react for 2-4 hours at constant temperature to obtain a catalytic fiber layer; the temperature of the constant temperature reaction is 140 ℃ and 150 ℃, and the pressure is 0.2-0.3 MPa.
A gas infrared catalytic combustion device comprises a gas layer, a preheating layer and a catalytic fiber layer which are sequentially arranged from inside to outside.
The gas layer includes diversion layer and disperse system, diversion layer bottom positive center is provided with the connecting pipe, the connecting pipe meets with outside gas pipeline, the disperse system adopts the metal mesh, and one side meets with preheating the layer.
The preheating layer middle section is provided with a heating layer, the heating layer adopts a porous graphene plate, heating rods are transversely arranged in the graphene plate at intervals, the upper side face of the heating layer is 10-30mm away from the catalytic fiber layer, and the lower side face of the heating layer is 10-30mm away from the fuel gas layer.
The catalytic fiber layer comprises a graphene surface layer and an aluminum oxide catalytic layer, the lower surface of the aluminum oxide catalytic layer is connected with the preheating layer, and the upper surface of the aluminum oxide catalytic layer is connected with the graphene surface layer.
From the above description, it can be seen that the present invention has the following advantages:
1. the invention solves the problem of weak adhesion of the existing catalytic fiber layer, utilizes the flocculation effect of aluminum hydroxide to disperse platinum hydroxide in a staggered manner, and utilizes water vapor to open gaps in the dehydration process to form a uniform microporous structure.
2. According to the invention, the heat conductivity of graphene is utilized to accelerate the dispersion of heat, so that the surface temperature uniformity is effectively improved, and meanwhile, the whole catalytic fiber layer takes alumina as a frame, so that the connectivity of a graphene surface film and an alumina catalytic layer is improved.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
Detailed Description
With reference to fig. 1, a specific embodiment of the present invention is described in detail, but the present invention is not limited in any way by the claims.
Example 1
The utility model provides a gas infrared catalysis fibrous layer, includes graphite alkene top layer and aluminium oxide catalysis layer, the aluminium oxide catalysis layer adopts platinum doping activity aluminium oxide fibrous layer, graphite alkene top layer adopts graphite alkene and aluminium oxide to mix and forms.
The gas infrared catalytic fiber layer is placed in an oxygen-enriched environment for standing for 2 hours before use.
The preparation method of the fuel gas infrared catalytic fiber layer comprises the following steps:
step 1, adding platinum chloride into absolute ethyl alcohol, and uniformly stirring to form a platinum alcohol solution, wherein the concentration of the platinum chloride in the absolute ethyl alcohol is 10g/L, and the stirring speed is 1000 r/min;
step 4, placing the second mixed precipitate into a mold, extruding at a constant temperature to form a first plate layer structure, then flatly paving the first mixed precipitate on the surface of the first film layer structure, and extruding to form a second plate layer structure to obtain a prefabricated fiber layer, wherein the constant-temperature extrusion temperature is 90 ℃, the pressure is 0.3MPa, the extrusion pressure is 0.3MPa, and the temperature is 100 ℃;
step 5, adding the prefabricated fiber layer into a reaction kettle for constant-temperature reaction for 2 hours to obtain a catalytic fiber layer; the temperature of the constant temperature reaction is 140 ℃, and the pressure is 0.2 MPa.
The utility model provides an infrared catalytic combustion device of gas, includes gas layer 1, preheating layer 2 and catalytic fiber layer 3 that from interior to exterior set gradually.
The fuel gas layer 1 comprises a flow guide layer 1-1 and a dispersion layer 1-2, a connecting pipe is arranged in the center of the bottom of the flow guide layer 1-1, the connecting pipe is connected with an external fuel gas pipeline, the dispersion layer 1-2 is made of a metal net, one side of the metal net is connected with a preheating layer 1-1, and the other side of the metal net is connected with a preheating layer 2.
The middle section of the preheating layer 2 is provided with a heating layer 2-1, the heating layer 2-1 adopts a porous graphene plate, heating rods 2-2 are transversely arranged in the graphene plate at intervals, the upper side face of the heating layer 2-1 and the catalytic fiber layer 3 are 10mm apart, and the lower side face and the fuel gas layer 1 are 10mm apart.
The catalytic fiber layer 3 comprises a graphene surface layer 3-2 and an aluminum oxide catalytic layer 3-1, the lower surface of the aluminum oxide catalytic layer 3-1 is connected with the preheating layer 2, and the upper surface of the aluminum oxide catalytic layer is connected with the graphene surface layer 3-2.
Example 2
The utility model provides a gas infrared catalysis fibrous layer, includes graphite alkene top layer and aluminium oxide catalysis layer, the aluminium oxide catalysis layer adopts platinum doping activity aluminium oxide fibrous layer, graphite alkene top layer adopts graphite alkene and aluminium oxide to mix and forms.
The gas infrared catalytic fiber layer is placed in an oxygen-enriched environment for standing for 4 hours before use.
The preparation method of the fuel gas infrared catalytic fiber layer comprises the following steps:
step 1, adding platinum chloride into absolute ethyl alcohol, and uniformly stirring to form a platinum alcohol solution, wherein the concentration of the platinum chloride in the absolute ethyl alcohol is 30g/L, and the stirring speed is 2000 r/min;
step 4, placing the second mixed precipitate into a mold, extruding at a constant temperature to form a first plate layer structure, then flatly paving the first mixed precipitate on the surface of the first film layer structure, and extruding to form a second plate layer structure to obtain a prefabricated fiber layer, wherein the constant-temperature extrusion temperature is 100 ℃, the pressure is 0.5MPa, the extrusion pressure is 0.5MPa, and the temperature is 120 ℃;
step 5, adding the prefabricated fiber layer into a reaction kettle for constant-temperature reaction for 4 hours to obtain a catalytic fiber layer; the temperature of the constant temperature reaction is 150 ℃, and the pressure is 0.3 MPa.
The utility model provides an infrared catalytic combustion device of gas, includes gas layer 1, preheating layer 2 and catalytic fiber layer 3 that from interior to exterior set gradually.
The fuel gas layer 1 comprises a flow guide layer 1-1 and a dispersion layer 1-2, a connecting pipe is arranged in the center of the bottom of the flow guide layer 1-1, the connecting pipe is connected with an external fuel gas pipeline, the dispersion layer 1-2 is made of a metal net, one side of the metal net is connected with a preheating layer 1-1, and the other side of the metal net is connected with a preheating layer 2.
The middle section of the preheating layer 2 is provided with a heating layer 2-1, the heating layer 2-1 adopts a porous graphene plate, heating rods 2-2 are transversely arranged in the graphene plate at intervals, the upper side face of the heating layer 2-1 and the catalytic fiber layer 3 are spaced by 30mm, and the lower side face of the heating layer and the fuel gas layer 1 are spaced by 30 mm.
The catalytic fiber layer 3 comprises a graphene surface layer 3-2 and an aluminum oxide catalytic layer 3-1, the lower surface of the aluminum oxide catalytic layer 3-1 is connected with the preheating layer 2, and the upper surface of the aluminum oxide catalytic layer is connected with the graphene surface layer 3-2.
Example 3
The utility model provides a gas infrared catalysis fibrous layer, includes graphite alkene top layer and aluminium oxide catalysis layer, the aluminium oxide catalysis layer adopts platinum doping activity aluminium oxide fibrous layer, graphite alkene top layer adopts graphite alkene and aluminium oxide to mix and forms.
The fuel gas infrared catalytic fiber layer is placed in an oxygen-enriched environment for standing for 3 hours before use.
The preparation method of the fuel gas infrared catalytic fiber layer comprises the following steps:
step 1, adding platinum chloride into absolute ethyl alcohol, and uniformly stirring to form a platinum alcohol solution, wherein the concentration of the platinum chloride in the absolute ethyl alcohol is 20g/L, and the stirring speed is 1500 r/min;
step 4, placing the second mixed precipitate into a mold, extruding at a constant temperature to form a first plate layer structure, then flatly paving the first mixed precipitate on the surface of the first film layer structure, and extruding to form a second plate layer structure to obtain a prefabricated fiber layer, wherein the constant-temperature extrusion temperature is 95 ℃, the pressure is 0.4MPa, the extrusion pressure is 0.4MPa, and the temperature is 110 ℃;
step 5, adding the prefabricated fiber layer into a reaction kettle for constant-temperature reaction for 3 hours to obtain a catalytic fiber layer; the temperature of the constant temperature reaction is 145 ℃, and the pressure is 0.3 MPa.
The utility model provides an infrared catalytic combustion device of gas, includes gas layer 1, preheating layer 2 and catalytic fiber layer 3 that from interior to exterior set gradually.
The fuel gas layer 1 comprises a flow guide layer 1-1 and a dispersion layer 1-2, a connecting pipe is arranged in the center of the bottom of the flow guide layer 1-1, the connecting pipe is connected with an external fuel gas pipeline, the dispersion layer 1-2 is made of a metal net, one side of the metal net is connected with a preheating layer 1-1, and the other side of the metal net is connected with a preheating layer 2.
The middle section of the preheating layer 2 is provided with a heating layer 2-1, the heating layer 2-1 adopts a porous graphene plate, heating rods 2-2 are transversely arranged in the graphene plate at intervals, the upper side face of the heating layer 2-1 and the catalytic fiber layer 3 are 20mm apart, and the lower side face of the heating layer and the fuel gas layer 1 are 20mm apart.
The catalytic fiber layer 3 comprises a graphene surface layer 3-2 and an aluminum oxide catalytic layer 3-1, the lower surface of the aluminum oxide catalytic layer 3-1 is connected with the preheating layer 2, and the upper surface of the aluminum oxide catalytic layer is connected with the graphene surface layer 3-2.
Performance detection
| Example 1 | Example 2 | Example 3 | |
| Surface temperature difference | 1.5℃ | 0.8℃ | 1.3℃ |
| Surface temperature difference after use | 1.7℃ | 1.2℃ | 1.5℃ |
| Time to reach stability | 86s | 79s | 83s |
| Reach a stable time after use | 90s | 81s | 85s |
| Thermal efficiency | 73.2％ | 75.6％ | 73.9％ |
| Thermal efficiency after use | 71.1％ | 74.1％ | 73.3％ |
Use refers to data after 200h of use.
The CO emission concentration after combustion of examples 1-3 was almost zero and the NOx emission concentration was about 1 ppm.
In summary, the invention has the following advantages:
1. the invention solves the problem of weak adhesion of the existing catalytic fiber layer, utilizes the flocculation effect of aluminum hydroxide to disperse platinum hydroxide in a staggered manner, and utilizes water vapor to open gaps in the dehydration process to form a uniform microporous structure.
2. According to the invention, the heat conductivity of graphene is utilized to accelerate the dispersion of heat, so that the surface temperature uniformity is effectively improved, and meanwhile, the whole catalytic fiber layer takes alumina as a frame, so that the connectivity of a graphene surface film and an alumina catalytic layer is improved.
It should be understood that the detailed description of the invention is merely illustrative of the invention and is not intended to limit the invention to the specific embodiments described. It will be appreciated by those skilled in the art that the present invention may be modified or substituted equally as well to achieve the same technical result; as long as the use requirements are met, the method is within the protection scope of the invention.
Claims (10)
1. A fuel gas infrared catalytic fiber layer is characterized in that: the catalyst comprises a graphene surface layer and an alumina catalyst layer, wherein the alumina catalyst layer is a platinum-doped activated alumina fiber layer, and the graphene surface layer is formed by mixing graphene and alumina.
2. The fuel gas infrared catalytic fiber layer of claim 1, characterized in that: the gas infrared catalytic fiber layer is placed in an oxygen-enriched environment for standing for 2-4 hours before use.
3. The fuel gas infrared catalytic fiber layer of claim 1, characterized in that: the preparation method of the fuel gas infrared catalytic fiber layer comprises the following steps:
step 1, adding platinum chloride into absolute ethyl alcohol, and uniformly stirring to form a platinum alcohol solution;
step 2, adding aluminum chloride into the platinum alcohol solution, and uniformly stirring to form platinum aluminum alcohol solution;
step 3, slowly dripping ammonia water into the platinum-aluminum alcohol solution, and uniformly stirring until no precipitate is generated; filtering to obtain a first mixed precipitate, wherein the slow adding speed of the ammonia water is 5-10mL/min, the temperature is 20-40 ℃, and the stirring speed for uniformly stirring is 1000-2000 r/min;
step 3, adding aluminum chloride into absolute ethyl alcohol for dissolving, adding graphene, stirring uniformly, then slowly dropwise adding a sodium hydroxide solution until no precipitate is formed, and filtering to obtain a second mixed precipitate;
step 4, placing the second mixed precipitate into a mold, extruding at constant temperature to form a first plate layer structure, then flatly paving the first mixed precipitate on the surface of the first film layer structure, and extruding to form a second plate layer structure to obtain a prefabricated fiber layer;
and 5, adding the prefabricated fiber layer into a reaction kettle to react for 2-4h at constant temperature to obtain the catalytic fiber layer.
4. The fuel gas infrared catalytic fiber layer of claim 3, characterized in that: the concentration of the platinum chloride in the absolute ethyl alcohol in the step 1 is 10-30g/L, and the stirring speed is 1000-2000 r/min.
5. The fuel gas infrared catalytic fiber layer of claim 3, characterized in that: the mass of the aluminum chloride in the step 2 is 400-700% of that of the platinum chloride, and the stirring speed is 1000-2000 r/min.
6. The fuel gas infrared catalytic fiber layer of claim 3, characterized in that: the concentration of the aluminum chloride in the absolute ethyl alcohol in the step 3 is 100-200g/L, the addition amount of the graphene is 20-30% of the mass of the aluminum chloride, the stirring speed is 1000-2000r/min, the slow dripping speed is 5-10mL/min, and the pH value of the sodium hydroxide solution is 10-13.
7. The fuel gas infrared catalytic fiber layer of claim 3, characterized in that: the temperature of the constant temperature extrusion in the step 4 is 90-100 ℃, the pressure is 0.3-0.5MPa, the pressure of the extrusion is 0.3-0.5MPa, and the temperature is 100-120 ℃.
8. The fuel gas infrared catalytic fiber layer of claim 3, characterized in that: the temperature of the isothermal reaction in the step 5 is 140-150 ℃, and the pressure is 0.2-0.3 MPa.
9. The utility model provides a gas infrared catalytic combustion device which characterized in that: the catalytic fiber layer comprises a gas layer, a preheating layer and the catalytic fiber layer according to any one of claims 1 to 8, wherein the gas layer, the preheating layer and the catalytic fiber layer are sequentially arranged from inside to outside, the catalytic fiber layer comprises a graphene surface layer and an alumina catalytic layer, the lower surface of the alumina catalytic layer is connected with the preheating layer, and the upper surface of the alumina catalytic layer is connected with the graphene surface layer.
10. The gas infrared catalytic combustion device of claim 9, characterized in that: the fuel gas layer comprises a diversion layer and a dispersion layer, a connecting pipe is arranged in the center of the bottom of the diversion layer and is connected with an external fuel gas pipeline, the dispersion layer is made of a metal net, and one side of the dispersion layer is connected with the preheating layer; the preheating layer middle section is provided with a heating layer, the heating layer adopts a porous graphene plate, heating rods are transversely arranged in the graphene plate at intervals, the upper side face of the heating layer is 10-30mm away from the catalytic fiber layer, and the lower side face of the heating layer is 10-30mm away from the fuel gas layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010271939.7A CN111351042B (en) | 2020-04-09 | 2020-04-09 | Gas infrared catalytic fiber layer and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010271939.7A CN111351042B (en) | 2020-04-09 | 2020-04-09 | Gas infrared catalytic fiber layer and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111351042A true CN111351042A (en) | 2020-06-30 |
| CN111351042B CN111351042B (en) | 2021-10-22 |
Family
ID=71193231
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010271939.7A Active CN111351042B (en) | 2020-04-09 | 2020-04-09 | Gas infrared catalytic fiber layer and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111351042B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2102465U (en) * | 1991-08-22 | 1992-04-22 | 北京市公用事业科学研究所 | Gas burning catalyst burning infrared radiator |
| KR20020011548A (en) * | 2000-08-02 | 2002-02-09 | 손재익 | Catalytic combustion burner of secondary fuel supply type |
| KR100418652B1 (en) * | 2001-06-21 | 2004-02-14 | 린나이코리아 주식회사 | Surface combustion burner |
| CN105016707A (en) * | 2014-05-02 | 2015-11-04 | 加川清二 | Heat-dissipating sheet having high thermal conductivity and its production method |
| CN105753425A (en) * | 2016-01-23 | 2016-07-13 | 王秋芹 | Graphene and aluminum oxide based far-infrared heating coating and method for preparing same |
| CN205606542U (en) * | 2016-04-14 | 2016-09-28 | 中国科学院大连化学物理研究所 | Catalysis glowing device of extremely low pollutant emission |
| US20190049108A1 (en) * | 2015-02-09 | 2019-02-14 | Gas Technology Institute | Radiant infrared gas burner |
-
2020
- 2020-04-09 CN CN202010271939.7A patent/CN111351042B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2102465U (en) * | 1991-08-22 | 1992-04-22 | 北京市公用事业科学研究所 | Gas burning catalyst burning infrared radiator |
| KR20020011548A (en) * | 2000-08-02 | 2002-02-09 | 손재익 | Catalytic combustion burner of secondary fuel supply type |
| KR100418652B1 (en) * | 2001-06-21 | 2004-02-14 | 린나이코리아 주식회사 | Surface combustion burner |
| CN105016707A (en) * | 2014-05-02 | 2015-11-04 | 加川清二 | Heat-dissipating sheet having high thermal conductivity and its production method |
| US20190049108A1 (en) * | 2015-02-09 | 2019-02-14 | Gas Technology Institute | Radiant infrared gas burner |
| CN105753425A (en) * | 2016-01-23 | 2016-07-13 | 王秋芹 | Graphene and aluminum oxide based far-infrared heating coating and method for preparing same |
| CN205606542U (en) * | 2016-04-14 | 2016-09-28 | 中国科学院大连化学物理研究所 | Catalysis glowing device of extremely low pollutant emission |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111351042B (en) | 2021-10-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100441290C (en) | Preparation method of carbon nano-cage loaded metal platinum nano-particle electrode catalyst | |
| CN217940185U (en) | Energy-saving device for producing vehicle urea solution | |
| CN114751388A (en) | Porous boron nitride and preparation method thereof, nano gold boron nitride composite photocatalyst and preparation method and application thereof | |
| CN111351042B (en) | Gas infrared catalytic fiber layer and preparation method thereof | |
| CN108619902A (en) | A kind of Gas Generator Set corrugated SCR denitration and preparation method thereof | |
| CN102614827A (en) | Preparation method of modified sepiolite supported nano iron material | |
| CN102188878A (en) | Efficient absorption and desorption combined system with plate-type heat exchanger | |
| CN104437586A (en) | Foam type low-temperature flue gas denitration catalyst and preparation method thereof | |
| CN205481038U (en) | Heat accumulation formula waste gas burns burning furnace | |
| CN204371524U (en) | Carbon reduction increases horse device | |
| CN105435819B (en) | A kind of cordierite loads MnOxF adulterates TiO2The method of active component and the MnO of preparationxF adulterates TiO2Cordierite composite catalyst | |
| CN102188875B (en) | Energy-saving high-efficiency purification system for industrial volatilizable organic pollutant | |
| CN201978636U (en) | Energy-saving efficient adsorption and desorption combined system | |
| CN103521072B (en) | Coal mine ventilation air methane back-heating catalytic oxidation device with combined type oxidation bed | |
| CN202028319U (en) | Efficient adsorption and desorption combined system with plate heat exchanger | |
| CN114602455A (en) | Foaming honeycomb denitration catalyst and production method thereof | |
| CN202044887U (en) | Energy-saving efficient purification system for industrial volatilizable organic pollutants | |
| CN208687750U (en) | A kind of vertical catalytic combustion device for organic waste gases | |
| CN102188873A (en) | Energy-saving efficient adsorption and desorption combined system | |
| CN212870214U (en) | Hot blast stove device for drying zinc oxide desulfurizer | |
| CN215860417U (en) | Stainless steel air inlet chamber for automobile engine exhaust emission | |
| CN103471114B (en) | Catalytic combustion bed furnace body structure | |
| CN112410087B (en) | Catalyst gasification device and energy-saving integrated combustion-supporting equipment with same | |
| CN203517831U (en) | Catalyzing bed special for industrial volatile organic pollutants in PM2.5 | |
| CN203517830U (en) | Energy-saving desorption system with controllable temperature |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |