Preparation method of catalyst for purifying cokery tail gas and recovering sulfur
A coke oven tail gas and catalyst technology, which is applied in the direction of catalyst activation/preparation, physical/chemical process catalyst, catalyst carrier, etc., can solve problems such as unsatisfactory effects, and achieve the effects of low cost, high reactivity and simple process
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example 1
[0012] Example 1. The active component cerium oxide weight percentage content is 3%, and the preparation of NiO weight percentage content is 10% catalyst sample: first immerse 150 grams of supports in the dilute nitric acid that concentration is 1M, after soaking 2 hours at 35 ℃, Drain and wash with deionized water until neutral, and then dry at 130°C for 2 hours. Repeat the above operation process until the water absorption rate of the material reaches 20% (wt%), and the specific surface area is 1.0 m 2 / g and acid solubility 8% (wt%); 35 milliliters of 1M cerium nitrate and 134 milliliters of 2M nickel nitrate are placed in a beaker. Then soak 100 grams of the pretreated carrier in the above solution for 1 hour at 35°C, and load the solution on the carrier by the above-mentioned co-impregnation method until the predetermined load is reached by multiple dipping methods. Between each dipping and the next dipping, it should be fished out, leached, heated and dried, and dipped ...
example 2
[0013] Example 2. The active component lanthanum oxide weight percentage content is 5%, and the NiO weight percentage content is the preparation of 8% catalyst sample: the carrier after pretreatment carries out active component impregnation, gets 1M lanthanum nitrate 150 milliliters and 3M nickel nitrate 150 mL were placed in beakers. Using the above separate immersion method, first soak 100 grams of the pretreated carrier in the lanthanum nitrate solution at 40°C, and load the solution on the carrier by multiple dipping methods until the predetermined amount is reached. Between each dipping and the next dipping, it should be fished out, leached, heated and dried, and dipped again. Dry at 180°C for at least 2 hours after each impregnation. Then immerse the carrier impregnated with lanthanum nitrate in the nickel nitrate solution at 40°C, and the impregnation method is the same as above. After the impregnation, it is dried at 180°C for at least 2 hours, heated and decomposed ...
example 3
[0014] Example 3. The active component cerium oxide weight percentage content is 3%, the strontium oxide weight percentage content is 2%, and the NiO weight percentage content is 9% catalyst sample preparation: the carrier after pretreatment carries out active component impregnation, takes 1.5 20 ml of M strontium nitrate, 22.5 ml of 2M cerium nitrate, and 183 ml of 2.5M nickel nitrate were placed in a beaker. By means of co-impregnation, 100 grams of the pretreated carrier was placed in the above solution, the impregnation method was the same as in Example 1, and the drying conditions were also the same as in Example 1. The decomposition temperature is 600°C, at least 2 hours. Finally, it was calcined at 850°C for 7 hours to make a catalyst.
[0015] Example 4. The preparation of a catalyst sample with an active component of 12% by weight of NiO and 1% by weight of strontium oxide. The pretreated carrier is impregnated with active components. Take 150 ml of 3M nickel nitrat...
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