Pre-treatment method before regeneration of precious metal by waste catalyst
A waste catalyst and precious metal technology, which is applied in the field of pretreatment before the waste catalyst regenerates precious metals, can solve the problem of not involving comprehensive utilization of waste, and achieve the effect of saving raw materials and energy.
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Embodiment 1
[0026] 1. Weigh raw materials: 150kg waste catalyst (hydrodesulfurization catalyst), 19kg waste toner, 14kg clay and 15kg water.
[0027] 2. Granulation: After mixing the waste toner and waste catalyst according to the ratio of step 1, stir slowly for 20 minutes, then add clay and water, continue mixing evenly, and then enter the granulator to granulate. The diameter of the pellets is 5 Between ~7cm. The staff enters the furnace and puts the finished raw materials in order to ensure that the bottom of the furnace is completely covered to prevent damage to the furnace body caused by partial dry burning, and then the upper cover is sealed for dry distillation; heating is started, and the temperature is raised from room temperature to 450°C and then kept warm After 2.5 hours, stop heating, and wait for the temperature to drop from 450°C to room temperature, and it is strictly forbidden to use water to directly cool down.
[0028] 3. After laboratory testing, the oil content of t...
Embodiment 2
[0030] 1. Weigh raw materials: 150kg spent catalyst (paraffin hydrogenation catalyst), 45kg spent toner powder, 45kg clay and 22.5kg water.
[0031] 2. Granulation: After mixing the waste toner and waste catalyst according to the ratio of step 1, stir slowly for 30 minutes, then add clay and water, continue mixing evenly, and then enter the granulator to granulate. The diameter of the pellets is 5 Between ~7cm. The staff enters the furnace and puts the finished raw materials in order to ensure that the bottom of the furnace is completely covered to prevent damage to the furnace body caused by partial dry burning, and then the upper cover is sealed for dry distillation; heating is started, and the temperature is raised from room temperature to 500°C and then kept warm After 3 hours, stop heating, and wait for the temperature to drop from 500°C to room temperature, and it is strictly forbidden to use water to directly cool down.
[0032] 3. After laboratory testing, the oil con...
Embodiment 3
[0034] 1. Weigh raw materials: 150kg waste catalyst (heavy oil catalytic cracking diesel hydrogenation catalyst), 3kg waste toner, 15kg clay and 15kg water.
[0035] 2. Granulation: After mixing the waste toner and waste catalyst according to the ratio of step 1, stir slowly for 10 minutes, then add clay and water, continue mixing evenly, and then enter the granulator to granulate. The diameter of the pellets is 5 Between ~7cm. The staff enters the furnace and puts the finished raw materials in order to ensure that the bottom of the furnace is completely covered to prevent damage to the furnace body caused by partial dry burning, and then the upper cover is sealed for dry distillation; heating is started, and the temperature is raised from room temperature to 400°C and then kept warm After 2 hours, stop heating, and wait for the temperature to drop from 400°C to room temperature, and it is strictly forbidden to use water to directly cool down.
[0036] 3. After laboratory tes...
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