Preparation method of integral type SCR (Selective Catalytic Reduction) catalytic reactor compounded by inorganic oxide
A technology of inorganic oxides and catalytic reactors, which is applied in the preparation of integral SCR catalytic reactors and the field of nitrogen oxide reduction, which can solve the problems of rising overall cost of honeycomb catalysts, unusable active components, and coating binding strength Limited and other problems, to save the coating process, improve the durability, and the effect of cheap raw materials
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Embodiment 1
[0016] The honeycomb ceramic catalyst was prepared by using kaolin, inorganic oxide, mullite fiber and aluminum dihydrogen phosphate as raw materials.
[0017] The first step: preparation of honeycomb ceramic mud
[0018] 6.0kg kaolin, inorganic oxide, 0.5kg mullite fiber, 1.5kg aluminum dihydrogen phosphate, 0.3kg methyl cellulose (binder), 0.3kg tung oil (lubricant), 0.3kg glycerin (plasticizer) ) and 2kg of water were put into a mud kneader and mixed for 5 hours to make mud; then the mud was put into a vacuum mud mixer for mud refining, and the mixing time was 2 hours; after that, the mud made of vacuum mud was used for fresh-keeping Wrap it with a film, put it into a cool and humid air and stale for 20 hours to make a mud base with good plasticity; put the aged mud base into an extruder for extrusion molding, and the extrusion pressure is 23Mpa to make the mud base pass through Bottom diameter is 18cm, 200-mesh stainless steel mould, and then cut into the required length ...
Embodiment 2
[0023] The honeycomb ceramic catalyst was prepared by using bentonite, inorganic oxide and mullite fiber as raw materials.
[0024] The first step: preparation of honeycomb ceramic mud
[0025] 5.5kg kaolin, inorganic oxides, 0.3kg mullite fiber, 2.5kg aluminum dihydrogen phosphate, 0.4kg hydroxypropyl methylcellulose (binder), 0.3kg tung oil (lubricant), 0.3kg glycerin ( Plasticizer) and 2.5kg of water were put into a mud kneader and mixed for 5 hours to form mud; then the mud was put into a vacuum mud mill for mud refining, and the mixing time was 2 hours; The mud base is wrapped with a plastic wrap, put into a cool and humid air and stale for 20 hours to obtain a good plasticity mud base; the aged mud base is put into an extruder for extrusion molding, and the extrusion pressure is 23Mpa. Make the mud body pass through a stainless steel mold with a bottom diameter of 18cm and 200 meshes, and then cut it into a honeycomb ceramic wet body of the required length with a molybd...
Embodiment 3
[0030] Attapulgite, inorganic oxides, and mullite fibers were used as raw materials to prepare honeycomb ceramic catalysts.
[0031] The first step: preparation of honeycomb ceramic mud
[0032] 6kg attapulgite, inorganic oxide, 0.2kg mullite fiber, 3.0kg aluminum dihydrogen phosphate, 0.3kg hydroxyethyl cellulose (binder), 0.3kg tung oil (lubricant), 0.3kg glycerin ( Plasticizer) and 2.0kg of water were put into a mud kneader and mixed for 5 hours to form mud; then the mud was put into a vacuum mud mill for mud refining, and the mixing time was 2 hours; after that, the mud made of vacuum mud The billet is wrapped with a plastic wrap, put into a cool and humid air and stale for 20 hours to obtain a mud billet with good plasticity; the stale mud billet is put into an extruder for extrusion molding, and the extrusion pressure is 23Mpa, so that The mud body passes through a 200-mesh stainless steel mold with a diameter of 18cm on the bottom surface, and then cuts it into a honey...
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