Technique for processing methanol-to-propylene by-products
A methanol-to-propylene and processing technology, which is applied in the field of aromatics chemical industry, can solve the problems of unreported MTP by-product processing technology, and achieve high aromatics yield and low energy consumption
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Embodiment 1
[0032] (1) Aromatization of MTP liquid hydrocarbon by-products
[0033] The liquid hydrocarbon by-products of the MTP process first enter the first-stage olefin aromatization reactor. The catalyst is nano ZSM-5 molecular sieve modified by hydrothermal treatment at 450°C. The reaction temperature is 280°C, the pressure is 0.5MPa, and the mass space velocity is 1.0 h -1 react under the conditions. Then enter the second-stage alkane aromatization reactor, the catalyst is a ZSM-5 molecular sieve catalyst modified by Zn and Ni, wherein the loading of ZnO is 2.0wt%, and the loading of NiO is 1.0wt%. The reaction conditions are temperature 380°C, pressure 0.5MPa, mass space velocity 1.0h -1 . The properties of the MTP liquid hydrocarbon by-product raw materials are shown in Table 1, and the reaction results are shown in Table 2.
[0034] (2) Aromatization of by-products of MTP liquefied petroleum gas
[0035] The by-products of MTP liquefied gas and methanol are used as raw mate...
Embodiment 2
[0037] (1) Aromatization of MTP liquid hydrocarbon by-products
[0038] The liquid hydrocarbon by-products of the MTP process first enter the first-stage olefin aromatization reactor. The catalyst is nano ZSM-5 molecular sieve modified by hydrothermal treatment at 550°C. The reaction temperature is 300°C, the pressure is 1.0MPa, and the mass space velocity is 2.0 h -1 react under the conditions. Then enter the two-stage alkane aromatization reactor, the catalyst is ZSM-5 molecular sieve catalyst modified by Zn, Ni, La, the loading of ZnO is 2.0wt%, the loading of NiO is 1.0wt%, La 2 o 3 The loading amount is 1.0wt%. The reaction conditions are temperature 420°C, pressure 1.0MPa, mass space velocity 1.0h -1 , and the reaction results are shown in Table 2.
[0039] (2) Aromatization of by-products of MTP liquefied petroleum gas
[0040] The by-products of MTP liquefied gas and methanol are used as raw materials, and the properties of the liquefied gas raw materials are sho...
Embodiment 3
[0042] (1) Aromatization of MTP liquid hydrocarbon by-products
[0043] The liquid hydrocarbon by-products of the MTP process first enter the first-stage olefin aromatization reactor. The catalyst is nano ZSM-5 molecular sieve modified by hydrothermal treatment at 600°C. The reaction temperature is 340°C, the pressure is 0.5MPa, and the mass space velocity is 4.0 h -1 react under the conditions. Then enter the second-stage alkane aromatization reactor, the catalyst is ZSM-5 molecular sieve catalyst modified by Zn and Cr, the loading of ZnO is 2.0wt%, Cr 2 o 3 The loading amount is 3.0wt%. The reaction conditions are temperature 450°C, pressure 0.5MPa, mass space velocity 3.0h -1 , and the reaction results are shown in Table 2.
[0044] (2) Aromatization of by-products of MTP liquefied petroleum gas
[0045] The by-products of MTP liquefied gas and methanol are used as raw materials, and the properties of the liquefied gas raw materials are shown in Table 3. Liquefied pe...
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