Catalytic conversion method for reducing benzene content in gasoline
A catalytic conversion method and a technology for benzene content, which are applied in the field of catalytic conversion for reducing gasoline benzene content, can solve the problems of increased equipment investment, complicated separation process, reduced gasoline yield and the like, so as to increase gasoline yield and improve gasoline octane number. , the effect of improving gasoline quality
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Embodiment 1
[0037] This example illustrates the use of the method provided by the present invention.
[0038] use figure 1 In the process shown in Table 1, benzene-containing gasoline A listed in Table 1 is used as the reaction raw material, methanol (Beijing Chemical Plant, purity ≥ 99.5%) is used as the alkylation agent, and Y-type molecular sieve (see catalyst a in Table 2 for properties) is used as the reaction material. Catalyst, the catalytic conversion reaction of gasoline and methanol is carried out in a small fluidized bed reactor to produce low-benzene gasoline.
[0039] The mixture of benzene-containing gasoline A and methanol and preheated high-temperature steam are mixed into the fluidized bed reactor. At a reaction temperature of 400°C, the weight ratio of catalyst to total liquid feed is 15, methanol and benzene-containing gasoline The weight ratio is 0.25:1, and the space velocity is 10h -1 , under the condition that the water injection amount (accounting for the total l...
Embodiment 2
[0042] use figure 1 In the process shown, the benzene-containing gasoline B listed in Table 1 is used as the reaction raw material, methanol (Beijing Chemical Plant, purity ≥ 99.5%) is used as the alkylating agent, and ZSM-5 molecular sieves are used (see catalyst b in Table 2 for properties). ) as a catalyst, the catalytic conversion reaction of gasoline and methanol is carried out in a small fluidized bed reactor to produce low-benzene gasoline.
[0043] The mixture of benzene-containing gasoline B and methanol and preheated high-temperature steam are mixed into the fluidized bed reactor. At a reaction temperature of 300°C, the weight ratio of the catalyst to the total liquid feed is 6, methanol and benzene-containing gasoline The weight ratio is 0.20:1, and the weight hourly space velocity of the total liquid feed is 8h -1 , contacting with the catalyst under the condition of 10% by weight of water injection (accounting for the total liquid feed amount) for catalytic conve...
Embodiment 3
[0046] use figure 1 In the process shown, the benzene-containing gasoline C listed in Table 1 is used as the reaction raw material, methanol (Beijing Chemical Plant, purity ≥ 99.5%) is used as the alkylation agent, and ZSM-5 molecular sieves are used (see catalyst b in Table 2 for properties). ) as a catalyst, the catalytic conversion reaction of gasoline and methanol is carried out in a small fluidized bed reactor to produce low-benzene gasoline.
[0047] The mixture of benzene-containing gasoline C and methanol and preheated high-temperature steam are mixed into the fluidized bed reactor. At a reaction temperature of 500°C, the weight ratio of catalyst to total liquid feed is 6, methanol and benzene-containing gasoline The weight ratio is 0.125:1, and the weight hourly space velocity of the liquid total feed is 8h -1 , under the condition of 10% water injection (accounting for the total liquid feed), contacting with the catalyst for catalytic conversion to produce low-benze...
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Abstract
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