47results about How to "Low non-framework aluminum content" patented technology

The present invention provides a super-stable Y zeolite and the preparation method thereof. The ratio of silicate to aluminum in the super-stable Y zeolite is 6-11. The lattice constant of the zeolite is 2.446 to 2.458 nanometers. The percentage of non-skeleton aluminum in total aluminum in the zeolite is not higher than 30% by weight. The diameter of secondary pores with diameter of 2 to 100 nanometers in the zeolite shows a double probable distribution. The most probable diameter of the secondary pores with comparatively large diameter is 6-15 nanometers. The proportion of secondary pores with diameter between 8 to 100 nanometers in total secondary pores is 35% to 60%. The preparation method of the zeolite includes the step of making the super-stable Y zeolite come into contact with a solution containing organic acids and inorganic acids in the atmosphere of inert gases and / or nitrogen. The modified super-stable Y zeolite provided in the invention is applied to catalytic cracking; therefore the following effects can be realized: the cracking ability of heavy oil is strong, the selectivity of gasoline is high, and the selectivity of dry gas and carbon coke is good.

The invention relates to a super-stable Y-type molecular sieve containing phosphorus and rare earth, wherein the Y-type molecular sieve contains 4-11 wt% of rare earth, 0.05-10 wt% of phosphorus and 0.1-0.7 wt% of sodium oxide, and has the pore volume of 0.33-0.39 mL / g, the pore volume of the pores with the pore size of 2-100 nm accounts for 15-30% of the total pore volume, the unit cell constantis 2.440-2.455 nm, the non-framework aluminum accounts for less than 20% of the total aluminum, the lattice collapse temperature is more than 1050 DEG C, and a ratio of the amount of B acid to the amount of L acid is not less than 2.50. The preparation method comprises: preparing a rare earth-containing Y-type molecular sieve having a conventional unit cell size, calcining for 4.5-7 h at a temperature of 350-480 DEG C under 30-90% by volume of steam atmosphere, carrying out phosphorus modification treatment, and carrying out a contact reaction with silicon tetrachloride gas. According to the present invention, the Y-type molecular sieve has advantages of good hydrothermal stability, high heavy oil conversion activity, low coke selectivity, high heavy oil conversion diesel yield, high liquefied gas yield and high total liquid recovery.

The invention provides a catalytic cracking catalyst. The catalytic cracking catalyst contains clay, an alumina binder and a modified Y type molecular sieve. The modified Y type molecular sieve comprises 5 to 12 wt% of rare earth and no more than 0.5 wt% of sodium oxide, and has a total pore volume of 0.36 to 0.48 mL / g; the pore volume of secondary pores accounts for 20 to 38% of the total pore volume; a lattice constant is 2.440 nm to 2.455 nm; the content of non-framework aluminum is no more than 10% of total aluminum content; lattice collapse temperature is higher than 1060 DEG C; and a ratio of the amount of acid B to the amount of acid L is no less than 3.50. A preparation method for the catalytic cracking catalyst comprises the following steps: preparing a rare earth-containing Y type molecular sieve with a conventional cell size; carrying out roasting in a water vapor atmosphere with a temperature of 350 to 520 DEG C and a volume percentage of 30 to 95% for 4.5 to 7 h; carryingout a contact reaction with silicon tetrachloride; and carrying out acid treatment. The catalyst has higher heavy oil conversion activity, low coke selectivity, and higher gasoline yield, liquefied gas yield, light oil yield and total liquid yield.

The disclosure relates to a modified Y-type molecular sieve and a preparation method thereof. The content of rare earth elements in the modified Y-type molecular sieve is 4 to 11% by weight in terms of oxides, and the content of P 2 o 5 The content of phosphorus is 0.05-10% by weight, the content of sodium oxide is not more than 0.5% by weight, the content of active element oxide is 0.1-5% by weight, and the active element is gallium and / or boron; the modified Y The total pore volume of the Y-type molecular sieve is 0.36-0.48mL / g, and the ratio of the pore volume of the secondary pores with a pore diameter of 2-100nm to the total pore volume is 20-40%; the unit cell constant of the modified Y-type molecular sieve is 2.440-2.455nm, the lattice collapse temperature is not lower than 1060°C; the non-skeleton aluminum content of the modified Y-type molecular sieve accounts for no more than 10% of the total aluminum content, and the strong acid content of the modified Y-type molecular sieve The ratio of B acid amount to L acid amount is not less than 3.5. The modified Y-type molecular sieve of the present disclosure is used for processing hydrogenated LCO while having high LCO conversion efficiency, low coke selectivity, and higher aromatics-rich gasoline yield.

The invention provides a catalytic cracking catalyst. The catalytic cracking catalyst contains clay, alumina containing an additive and a modified Y type molecular sieve. The modified Y type molecularsieve comprises 5 to 12 wt% of rare earth and no more than 0.5 wt% of sodium oxide, and has a total pore volume of 0.36 to 0.48 mL / g; the pore volume of secondary pores accounts for 20 to 38% of thetotal pore volume; a lattice constant is 2.440 nm to 2.455 nm; the content of non-framework aluminum is no more than 10% of total aluminum content; lattice collapse temperature is higher than 1060 DEGC; and a ratio of the amount of acid B to the amount of acid L is no less than 3.50. A preparation method for the catalytic cracking catalyst comprises the following steps: preparing a rare earth-containing Y type molecular sieve with a conventional cell size; carrying out roasting in a water vapor atmosphere with a temperature of 350 to 520 DEG C and a volume percentage of 30 to 95% for 4.5 to 7h; carrying out a contact reaction with silicon tetrachloride; and carrying out acid treatment. The catalytic cracking catalyst has higher heavy oil conversion activity, low coke selectivity, and higher gasoline yield, liquefied gas yield, light oil yield and total liquid yield.

The invention provides a catalytic cracking catalyst. The catalytic cracking catalyst contains a modified Y type molecular sieve containing magnesium, alumina containing an additive and clay. In the modified Y type molecular sieve containing magnesium, the content of rare earth oxide is 4 to 10 wt%; the content of magnesium oxide is 0.1 to 4 wt%; the content of sodium oxide is 0.3 to 0.8 wt%; a total pore volume is 0.33 to 0.39 mL / g; the pore volume of secondary pores with pore diameters of 2 to 100 nm in the modified Y type molecular sieve accounts for 10 to 30% of the total pore volume; a lattice constant is 2.440 nm to 2.455 nm; the content of non-framework aluminum in the modified Y type molecular sieve is no more than 20% of total aluminum content; and lattice collapse temperature isno less than 1045 DEG C. The modified Y type molecular sieve has higher heavy oil conversion activity, low coke selectivity, and higher diesel oil yield, light oil yield and total liquid yield.

The invention provides a secondary-pore-rich modified Y type molecular sieve containing phosphorus and rare earth, and a preparation method thereof. In the modified Y type molecular sieve, the contentof rare earth oxide is 4 to 11 wt%; the content of phosphorus is 0.05 to 10 wt%; the content of sodium oxide is no more than 0.5 wt%; a total pore volume is 0.4 to 0.48 mL / g; the pore volume of secondary pores accounts for 20 to 38% of the total pore volume; a lattice constant is 2.440 nm to 2.455 nm; the content of non-framework aluminum is no more than 10% of total aluminum content; lattice collapse temperature is no less than 1060 DEG C; and a ratio of the amount of acid B to the amount of acid L is no less than 3.50. A preparation method for the molecular sieve comprises the following steps: exchanging of rare earth; hydrothermal roasting; gas-phase ultrastable modification; acid treatment; and introduction of phosphorus. The modified Y type molecular sieve has higher heavy oil conversion activity, low coke selectivity, and higher gasoline yield, liquefied gas yield, light oil yield and total liquid yield.

The disclosure relates to a modified Y-type molecular sieve and a preparation method thereof. The content of rare earth elements in the modified Y-type molecular sieve is 4 to 11% by weight in terms of oxides, and the content of P 2 o 5 The content of phosphorus is 0.05-10% by weight, the content of sodium oxide is not more than 0.5% by weight, the content of gallium oxide is 0.1-2.5% by weight, and the content of zirconia is 0.1-2.5% by weight; the total amount of the modified Y-type molecular sieve The pore volume is 0.36-0.48mL / g, and the pore volume of secondary pores with a pore diameter of 2-100nm accounts for 20-40% of the total pore volume; the unit cell constant of the modified Y-type molecular sieve is 2.440-2.455nm , the lattice collapse temperature is not lower than 1060°C; the non-skeletal aluminum content of the modified Y-type molecular sieve accounts for no more than 10% of the total aluminum content, and the amount of B acid in the strong acid amount of the modified Y-type molecular sieve is equal to The ratio of L acid amount is not less than 3.5. The modified Y-type molecular sieve of the present disclosure is used for processing hydrogenated LCO while having high LCO conversion efficiency, low coke selectivity, higher gasoline yield and high propylene yield rich in BTX aromatics, The concentration of propylene in liquefied gas is high.

The invention discloses a carrier and an application thereof. The carrier contains an aluminum-removal Y-type molecular sieve and a heatproof inorganic oxide. The invention also discloses a catalyst by employing the carrier and a preparation method and an application thereof. The invention further discloses a hydrocracking method of the catalyst. According to the molecular sieve in the carrier, the molecular sieve has high crystallization degree and abundant secondary pores, and has lower non-framework aluminum content. The catalyst is prepared by VIII metallic element and VIB metallic element loaded on the carrier, the catalyst displays better catalysis performance in a hydrocracking reaction, and can obtain good balance among catalytic activity, middle distillate selectivity and tail oil BMCI value.

The invention relates to a catalytic cracking catalyst, a preparation method and applications thereof, wherein the catalyst comprises 10-50 wt% of a modified Y-type molecular sieve, 10-40 wt% of an alumina binder (calculated as alumina), and 10-80 wt% of clay (calculated as dry base), wherein the modified Y-type molecular sieve comprises (calculated as the weight of the dry base of the modified Y-type molecular sieve) 5-12 wt% of rare earth elements (calculated as oxide), 0.1-0.7 wt% of sodium oxide, 0.1-2.5 wt% of gallium oxide, and 0.1-2.5 wt% of zirconium oxide, the total pore volume of themodified Y-type molecular sieve is 0.33-0.39 mL / g, the pore volume of the secondary pores with a pore size of 2-100 nm accounts for 10-25% of the total pore volume, the cell constant is 2.440-2.455 nm, the lattice collapse temperature is not lower than 1050 DEG C, the non-skeleton aluminum accounts for not more than 20% of the total aluminum content, and a ratio of the amount of the acid B to theamount of the acid L in the amount of the strong acid is not less than 3.0. According to the invention, with the application of the catalyst in processing hydrogenation of LCO, the LCO conversion efficiency is high, the coke selectivity is low, the yield of gasoline rich in aromatic hydrocarbon and the yield of propylene are high, and the concentration of propylene in liquefied gas is high.

The invention provides a catalytic cracking catalyst. The catalytic cracking catalyst contains a modified Y type molecular sieve containing phosphorus and rare earth, alumina containing an additive and clay. The modified Y type molecular sieve containing phosphorus and rare earth comprises 4 to 11 wt% of rare earth, 0.05 to 10 wt% of phosphorus and 0.1 to 0.7 wt% of sodium oxide, and has a pore volume is 0.33 to 0.39 mL / g; the volume of pores with pore diameters of 2 to 100 nm accounts for 15 to 30% of a total pore volume; a lattice constant is 2.440 nm to 2.455 nm; the content of non-framework aluminum is no more than 20% of total aluminum content; lattice collapse temperature is more than 1050 DEG C; and a ratio of the amount of acid B to the amount of acid L is no less than 2.50. The catalyst has higher heavy oil cracking activity, good coke selectivity, and high gasoline yield, liquefied gas yield and total liquid yield.