Hydrocarbon oil catalytic cracking method
A hydrocarbon oil and catalyst technology, applied in the chemical industry, organic chemistry, chemical recovery, etc., can solve the problem of insufficient selectivity of olefins in the conversion rate of methanol, and achieve the effects of flexible product solutions, reduced consumption, and low investment
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Embodiment 1
[0055] This example illustrates the hydrocarbon oil catalytic cracking method provided by the present invention.
[0056] The feedstock oil for catalytic cracking is Wuhan miscella, which is a mixture of 70% vacuum wax oil and 30% vacuum residue (see Table 2 for the properties of the raw material). The oxygenate feed is methanol aqueous solution (containing 80% by weight of methanol, prepared by adding deionized water to industrial methanol with a purity of 97%).
[0057] Table 2
[0058] project
Density (20℃), g / cm 3
0.9044
Refraction(20℃)
1.5217
Viscosity(100℃)mm 2 / s
9.96
40
Aniline point, ℃
95.8
C wt%
85.98
Hwt%
12.86
S wt%
0.55
N wt%
0.18
Carbon residue wt%
3.0
Distillation range, ℃
initial boiling point
243
5%
294
70%
473
[0059] The preparation ...
Embodiment 2
[0085] This example illustrates the effect of adopting the method of injecting the oxygenate raw material into the stripper in stages in the method provided by the present invention.
[0086] The catalytic cracking raw oil is the same as that in Example 1, which is a mixed oil formed by mixing 70% vacuum wax oil and 30% vacuum residue. The oxygenate feed is methanol aqueous solution (containing 80% by weight of methanol, prepared by adding deionized water to industrial methanol with a purity of 97%).
[0087] Catalyst preparation method is as follows:
[0088] Add 20kg of ZSM-5 zeolite (ZSP-2, product of Sinopec Catalyst Qilu Branch) on a dry basis, add 35kg of deionized water for beating, add USY molecular sieve (DASY2.0 product of Sinopec Catalyst Qilu Branch) 10kg, and then add SAPO -34 molecular sieve (pilot test product of Sinopec Catalyst Jianchang Branch) 20kg, beating evenly. Aluminum sol (commercially available, Al 2 o 3 Content is 25%) 80kg beating, add 30Kg kaol...
Embodiment 3
[0098] This example illustrates the result of the simultaneous injection of methanol and ethanol into the stripping section in the method provided by the present invention.
[0099] The preparation process of the present embodiment catalyst is as follows:
[0100] With 2kg of ZSM-5 zeolite (ZSP-3, iron oxide content 2.5wt%, phosphorus pentoxide content 2.9wt%, Sinopec Catalyst Qilu Branch Company product) on a dry basis, add 45kg deionized water for beating, add REY molecular sieve ( REY, rare earth oxide content 18.7%, unit cell constant 2.469nm, crystallinity 46% performance index, Sinopec Catalyst Qilu Branch product) 35kg, add SRM-8 molecular sieve 15kg again, beat evenly. 15Kg pseudo-boehmite (product of China Aluminum Shandong Aluminum Plant) on a dry basis is added to 100 kg of deionized water for beating, and 2 kg of concentrated hydrochloric acid (commercially available, HCl content 31.5% by weight) is added for beating evenly, then aluminum sol (commercially availabl...
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