Device for catalytically incinerating hazardous waste and its application method
A hazardous waste and catalyst technology, which is applied in the direction of combustion methods, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problems of large inventory, difficult to count, explosive chamber, high fuel consumption, etc.
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Embodiment 1
[0077] The preparation method of embodiment 1 catalyst of the present invention
[0078] In the kneader, add ammonium molybdate 169g, hydrated metatitanic acid 1600g (titanium oxide content 50%), hydrated ferric hydroxide 80g (ferric oxide content 40%), nickel carbonate 12g, tungsten oxide 23.2g, china clay 251.7g , add an appropriate amount of pure water to make it wet, and knead repeatedly for 6-8 hours to obtain a flexible paste. Use a single-screw extruder to extrude a 3mm cylinder with a length of about 3-6mm, dry it and demould it. Calcined at different temperatures for 8h in a muffle furnace.
[0079] Get the catalyst composition as MoO 3 0.2Fe 2 o 3 0.1NiO 0.1WO 3 10TiO 2 The catalyst has an active component content of 80% and a binder content of 20%.
Embodiment 2
[0080] The preparation method of embodiment 2 matched group catalyst
[0081] The same preparation method as in Example 1 was used to prepare copper catalyst CuO for comparison, with an active component content of 80% and a binder content of 20%.
Embodiment 3
[0082] Embodiment 3 catalytic activity data
[0083] It is tested that the oxidation ability of the catalyst changes with the increase of the calcination temperature.
[0084] The fixed bed steel tube used for the test is The 1KW electric heating wire is wound outside, controlled by a voltage regulator, and used to start the fixed bed reactor. The steel pipe is filled with about 400g of catalyst, the temperature is 480°C, and the air is 2.0m 3 / h, methane gas 120mL / h (measured by a bubbling flowmeter), the exhaust gas is detected online by a combustible gas detector, and the wet flowmeter accumulates the flow. The result is as follows:
[0085] High temperature catalyst prepared in table 1
[0086] Muffle furnace calcination temperature
[0087] Table 2 Copper catalyst for comparison
[0088] Muffle furnace calcination temperature
[0089] The above test shows that the copper catalyst calcined at 1000°C is severely deactivated, while the catalyst of t...
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Abstract
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