Green recycling method of spent platinum catalyst
A platinum catalyst and green technology, applied in the field of green recycling of expired platinum catalysts, can solve the problems of difficult filtration, poor effect, and low platinum recovery rate in a wet process, and achieve a cost-friendly environment, reduced production costs, and high recovery rate. Effect
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Embodiment 1
[0039] The green recycling method of spent platinum catalysts is carried out in sequence as follows:
[0040] A. Material pretreatment:
[0041] The exhausted propane dehydrogenation to propylene platinum catalyst was roasted in a rotary kiln at a temperature of 700°C and a roasting speed of 1,000 kg / day. After roasting, sampling and analysis showed that the platinum content was 2,550 g / ton;
[0042] The exhausted acetic acid ethanol platinum catalyst was roasted in a rotary kiln at a temperature of 500°C and a roasting speed of 3,000 kg / day. After roasting, sampling and analysis showed that the platinum content was 7,140 g / ton;
[0043] Marble: the main component is CaCO 3 , crush it to 3-6cm;
[0044] Iron block: lumpy, less than 10cm in length;
[0045] B. Ingredients and mixes:
[0046] Materials treated in step A: 1,000 kg of spent propane dehydrogenation propylene platinum catalyst, 1,000 kg of spent acetic acid platinum catalyst for ethanol production, 1,400 kg of m...
Embodiment 2
[0052] The green recycling method of spent platinum catalysts is carried out in sequence as follows:
[0053] A. Material pretreatment:
[0054] The exhausted propane dehydrogenation to propylene platinum catalyst was roasted in a rotary kiln at a temperature of 750°C and a roasting speed of 1250 kg / day. After roasting, sampling and analysis showed that the platinum content was 2560 g / ton;
[0055] The exhausted acetic acid ethanol platinum catalyst was roasted in a rotary kiln at a temperature of 550°C and a roasting speed of 4,000 kg / day. After roasting, sampling and analysis showed that the platinum content was 7,150 g / ton;
[0056] Marble: the main component is CaCO 3 , crush it to 3-6cm;
[0057] Iron block: lumpy, less than 10cm in length;
[0058] B. Ingredients and mixes:
[0059] Materials treated in step A: 1,000 kg of spent propane dehydrogenation to propylene platinum catalyst, 1,100 kg of spent acetic acid to produce ethanol platinum catalyst, 1,500 kg of marb...
Embodiment 3
[0065] The green recycling method of spent platinum catalysts is carried out in sequence as follows:
[0066] A. Material pretreatment:
[0067] The exhausted propane dehydrogenation to propylene platinum catalyst was roasted in a rotary kiln at a temperature of 800°C and a roasting speed of 1500 kg / day. After roasting, sampling and analysis showed that the platinum content was 2570 g / ton;
[0068] The exhausted acetic acid ethanol platinum catalyst was roasted in a rotary kiln at a temperature of 600°C and a roasting speed of 5,000 kg / day. After roasting, sampling and analysis showed that the platinum content was 7,160 g / ton;
[0069] Marble: the main component is CaCO 3 , crush it to 3-6cm;
[0070] Iron block: lumpy, less than 10cm in length;
[0071] B. Ingredients and mixes:
[0072] Materials treated in step A: 1,000 kg of spent propane dehydrogenation propylene platinum catalyst, 1,200 kg of spent acetic acid ethanol platinum catalyst, 1,600 kg of marble, 160 kg of ...
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