Alkane dehydrogenation heating auxiliary agent, preparation method and application thereof
A heating aid, alkane dehydrogenation technology, applied in chemical instruments and methods, hydrocarbons, hydrocarbons, etc., can solve the problems of difficult reduction, poor hydrothermal performance, etc.
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[0029] A preparation method of an alkane dehydrogenation heating aid, comprising the following steps:
[0030] S1: Calcium oxide or calcium hydroxide or a mixture of both, CuO or copper hydroxide or copper carbonate or basic copper carbonate or a mixture of at least two, Al 2 o 3 Or aluminum hydroxide or a mixture of the two, add water to knead evenly to obtain a kneaded product;
[0031] S2: Drying and calcining the kneaded product in sequence;
[0032] Preferably, the kneaded product can be extruded into strips or pelletized before drying, preferably extruded into strips; then dried and calcined in sequence, the drying temperature is 80-110°C, preferably 100°C, and the calcining temperature is 900°C -1200°C, preferably 1100°C, the calcination time is 3-4 hours, preferably 4 hours.
[0033] The exothermic additive for alkane dehydrogenation can be used as an exothermic additive in the dehydrogenation process of low-carbon alkanes.
Embodiment 1
[0055] Pseudoboehmite (containing 0.07 kg of alumina), calcium hydroxide (containing 0.68 kg of calcium oxide), and 0.25 kg of copper oxide were placed in a kneader and mixed evenly, and kneaded by adding water. After the kneading is completed, it is placed in an extruder to extrude, and the extruded sample is dried at 100° C. for 4 hours. The dried sample was then baked at 1100°C for 3 hours. The sample was named REZEL-1. The heat release before and after hydrothermal treatment is shown in Table 1.
[0056] REZEL-1 was aged at 800°C and 100% hydrothermal for 48 hours, and the sample was named Steam REZEL-1.
[0057] For the XRD pattern of Steam REZEL-1, see figure 2 , Steam REZEL-1 is black, see the DSC curve of REZEL-1 before and after hydrothermal aging Figure 4 .
Embodiment 2
[0059] Pseudo-boehmite (containing 0.16 kg of alumina), 0.53 kg of calcium oxide, and 0.25 kg of copper oxide are placed in a kneader and mixed evenly, and kneaded by adding water. After the kneading is completed, it is placed in an extruder to extrude, and the extruded sample is dried at 110° C. for 4 hours. The dried sample was then baked at 900°C for 4 hours. The sample was named REZEL-2. The heat release before and after hydrothermal treatment is shown in Table 1.
[0060] REZEL-2 was aged at 800°C and 100% hydrothermal for 48 hours, and the sample was named Steam REZEL-2.
[0061] See the XRD pattern of Steam REZEL-2 figure 2 , Steam REZEL-2 is black, see the DSC curve of REZEL-2 before and after hydrothermal aging Figure 4 .
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