Patents by Inventor Zhengguo Tan
Zhengguo Tan has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11084024Abstract: The invention relates to a molecular sieve modification method and a catalytic cracking catalyst containing a molecular sieve. The method comprises: mixing a solution containing an ion of a Group MB metal in the periodic table, an organic complexing agent, and/or a dispersant and a precipitation agent, and stirring the same to form a suspension containing a precipitant of a Group IIIB element; and mixing the resulting precipitant and a molecular sieve slurry, stirring the same to obtain a mixed slurry containing the precipitant of the Group MB element and a molecular sieve, and performing spray drying and optional calcination, to obtain a modified molecular sieve. The catalyst comprises, as calculated based on the catalyst mass being 100%, 10-55% of a modified molecular sieve (on a dry basis), 10-80% of clay (on a dry basis), 0-40% of an inorganic oxide (on an oxide basis), and 5-40% of a binding agent (on an oxide basis). The catalyst has good activity stability and heavy metal contamination resistance.Type: GrantFiled: August 4, 2016Date of Patent: August 10, 2021Assignee: PETROCHINA COMPANY LIMITEDInventors: Shuhong Sun, Xiaoliang Huang, Haitao Zhang, Gengzhen Cao, Yunfeng Zheng, Lin Wang, Zhishuang Pan, Zhengguo Tan, Yahong Wang, Jinjun Cai, Hongchang Duan, Xueli Li, Chengyuan Yuan, Dong Wang
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Publication number: 20180229223Abstract: The invention relates to a molecular sieve modification method and a catalytic cracking catalyst containing a molecular sieve. The method comprises: mixing a solution containing an ion of a Group MB metal in the periodic table, an organic complexing agent, and/or a dispersant and a precipitation agent, and stirring the same to form a suspension containing a precipitant of a Group IIIB element; and mixing the resulting precipitant and a molecular sieve slurry, stirring the same to obtain a mixed slurry containing the precipitant of the Group MB element and a molecular sieve, and performing spray drying and optional calcination, to obtain a modified molecular sieve. The catalyst comprises, as calculated based on the catalyst mass being 100%, 10-55% of a modified molecular sieve (on a dry basis), 10-80% of clay (on a dry basis), 0-40% of an inorganic oxide (on an oxide basis), and 5-40% of a binding agent (on an oxide basis). The catalyst has good activity stability and heavy metal contamination resistance.Type: ApplicationFiled: August 4, 2016Publication date: August 16, 2018Inventors: Shuhong Sun, Xiaoliang Huang, Haitao Zhang, Gengzhen Cao, Yunfeng Zheng, Lin Wang, Zhishuang Pan, Zhengguo Tan, Yahong Wang, Jinjun Cai, Hongchang Duan, Xueli Li, Chengyuan Yuan, Dong Wang
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Patent number: 9968918Abstract: The present invention provides a catalytic cracking catalyst for heavy oil and preparation methods thereof. The catalyst comprises 2 to 50% by weight of a phosphorus-containing ultrastable rare earth Y-type molecular sieve, 0.5 to 30% by weight of one or more other molecular sieves, 0.5 to 70% by weight of clay, 1.0 to 65% by weight of high-temperature-resistant inorganic oxides, and 0.01 to 12.5% by weight of a rare earth oxide. The phosphorus-containing ultra-stable rare earth Y-type molecular sieve uses a NaY molecular sieve as a raw material.Type: GrantFiled: July 27, 2012Date of Patent: May 15, 2018Assignee: PETROCHINA COMPANY LIMITEDInventors: Xionghou Gao, Haitao Zhang, Di Li, Zhengguo Tan, Hongchang Duan, Xueli Li, Chaowei Liu, Yunfeng Zheng, Xiaoliang Huang, Jinjun Cai, Zhishuang Pan, Xueqin Sun
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Patent number: 9968915Abstract: Provided is a phosphorus-containing ultrastable Y-type rare earth (RE) molecular sieve and the preparation method thereof. The method is: based on NaY molecular sieve as a raw material, obtaining “one-exchange one-roast” RE-Na Y-type molecular sieve through the steps of exchanging with RE, pre-exchanging with dispersing, and the first calcination; and then performing ammonium salt exchange, phosphorus modification, and the second calcination on the “one-exchange one-roast” RE-Na Y-type molecular sieve, wherein the sequence of the RE exchange and the pre-exchange with dispersing is unlimited, and the sequence of the ammonium salt exchange and the phosphorus modification is unlimited as well. The obtained molecular sieve contains RE oxide 1-20 wt %, phosphorus 0.1-5 wt %, and sodium oxide no more than 1.2 wt %, and has a crystallization degree of 51-69% and a lattice parameter of 2.449-2.469 nm.Type: GrantFiled: July 27, 2012Date of Patent: May 15, 2018Assignee: PETROCHINA COMPANY LIMITEDInventors: Xionghou Gao, Haitao Zhang, Di Li, Xueli Li, Hongchang Duan, Zhengguo Tan, Chaowei Liu, Yunfeng Zheng, Xiaoliang Huang, Jinjun Cai, Chenxi Zhang, Zhishuang Pan, Gengzhen Cao
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Patent number: 9895686Abstract: A method for producing double-component modified molecular sieve comprises adding molecular sieve to an aqueous solution containing phosphorus to form a mixture, allowing the mixture to react at pH of 1-10, temperature of 70-200° C. and pressure of 0.2-1.2 MPa for 10-200 min, and then filtering, drying and baking the resultant to obtain phosphorus-modified molecular sieve, and then adding the phosphorus-modified molecular sieve to an aqueous solution containing silver ions, allowing the phosphorus-modified molecular sieve to react with silver ions at 0-100° C. in dark condition for 30-150 min, and then filtering, drying and baking. The obtained double-component modified molecular sieve contains 88-99 wt % molecular sieve with a ratio of silica to alumina between 15 and 60, 0.5-10 wt % phosphorus (based on oxides) and 0.01-2 wt % silver (based on oxides), all based on dry matter. A catalyst produced from the double-component modified molecular sieve has improved hydrothermal stability and microactivity.Type: GrantFiled: December 1, 2009Date of Patent: February 20, 2018Assignee: PetroChina Company LimitedInventors: Xionghou Gao, Dong Ji, Haitao Zhang, Hongchang Duan, Di Li, ZhengGuo Tan, Yi Su, Zhicheng Tang, Yi Wang, Yanqing Ma, Yanbo Sun
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Patent number: 9889439Abstract: The present invention relates to a heavy oil catalytic cracking catalyst having a high yield of light oil and preparation methods thereof. The catalyst comprises 2 to 50% by weight of a magnesium-modified ultra-stable rare earth type Y molecular sieve, 0.5 to 30% by weight of one or more other molecular sieves, 0.5 to 70% by weight of clay, 1.0 to 65% by weight of high-temperature-resistant inorganic oxides, and 0.01 to 12.5% by weight of rare earth oxide. The magnesium-modified ultra-stable rare earth type Y molecular sieve is obtained by the following manner: the raw material, a NaY molecular sieve, is subjected to a rare earth exchange, a dispersing pre-exchange, a magnesium salt exchange modification, an ammonium salt exchange for sodium reduction, a second exchange and a second calcination. The catalyst provided in the present invention is characteristic in its high conversion capacity of heavy oil and a high yield of light oil.Type: GrantFiled: April 13, 2012Date of Patent: February 13, 2018Assignee: PetroChina Company LimitedInventors: Xionghou Gao, Haitao Zhang, Hongchang Duan, Di Li, Xueli Li, Zhengguo Tan, Xiaoliang Huang, Jinjun Cai, Yunfeng Zheng, Chenxi Zhang, Gengzhen Cao
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Patent number: 9844772Abstract: The present invention relates to a heavy oil catalytic cracking catalyst and preparation method thereof. The catalyst comprises 2 to 50% by weight of an ultra-stable rare earth type Y molecular sieve, 0.5 to 30% by weight of one or more other molecular sieves, 0.5 to 70% by weight of clay, 1.0 to 65% by weight of high-temperature-resistant inorganic oxides, and 0.01 to 12.5% by weight of rare earth oxide. The ultra-stable rare earth type Y molecular sieve is obtained as follows: the raw material, NaY molecular sieve, is subjected to a rare earth exchange and a dispersing pre-exchange, and the molecular sieve slurry is filtered, washed and subjected to a first calcination to produce a “one-exchange one-calcination” rare earth sodium Y molecular sieve, wherein the order of the rare earth exchange and the dispersing pre-exchange is not limited; and the “one-exchange one-calcination” rare earth sodium Y molecular sieve is further subjected to ammonium salt exchange for sodium reduction and a second calcination.Type: GrantFiled: April 13, 2012Date of Patent: December 19, 2017Assignee: PetroChina Company LimitedInventors: Xionghou Gao, Haitao Zhang, Zhengguo Tan, Di Li, Dong Ji, Hongchang Duan, Chenxi Zhang
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Patent number: 9840422Abstract: The present invention provides a magnesium-modified ultra-stable rare earth type Y molecular sieve and the preparation method thereof, which method is carried out by subjecting a NaY molecular sieve as the raw material to a rare earth exchange and a dispersing pre-exchange, then to an ultra-stabilization calcination treatment, and finally to a magnesium modification. The molecular sieve comprises 0.2 to 5% by weight of magnesium oxide, 1 to 20% by weight of rare earth oxide, and not more than 1.2% by weight of sodium oxide, and has a crystallinity of 46 to 63%, and a lattice parameter of 2.454 nm to 2.471 nm. In contrast to the prior art, in the molecular sieve prepared by this method, rare earth ions are located in sodalite cages, which is demonstrated by the fact that no rare earth ion is lost during the reverse exchange process. Moreover, the molecular sieve prepared by such a method has a molecular particle size D(v,0.5) of not more than 3.0 ?m and a D(v,0.9) of not more than 20 ?m.Type: GrantFiled: April 13, 2012Date of Patent: December 12, 2017Assignee: PetroChina Company LimitedInventors: Xionghou Gao, Haitao Zhang, Hongchang Duan, Chaowei Liu, Di Li, Xueli Li, Zhengguo Tan, Yunfeng Zheng, Xiaoliang Huang, Jinjun Cai, Chenxi Zhang
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Patent number: 9789475Abstract: The present invention provides an ultra-stable rare earth type Y molecular sieve and the preparation method thereof, which method is carried out by subjecting a NaY molecular sieve as the raw material to a rare earth exchange and a dispersing pre-exchange, then to an ultra-stabilization calcination treatment. The molecular sieve comprises 1 to 20% by weight of rare earth oxide, not more than 1.2% by weight of sodium oxide, has a crystallinity of 51 to 69%, and a lattice parameter of 2.451 nm to 2.469 nm. In contrast to the prior art, in the molecular sieve prepared by this method, rare earth ions are located in sodalite cages, which is demonstrated by the fact that no rare earth ion is lost during the reverse exchange process. Moreover, the molecular sieve prepared by such a method has a molecular particle size D(v,0.5) of not more than 3.0 ?m and a D(v,0.9) of not more than 20 ?m.Type: GrantFiled: April 13, 2012Date of Patent: October 17, 2017Assignee: Petrochina Company LimitedInventors: Xionghou Gao, Haitao Zhang, Zhengguo Tan, Di Li, Dong Ji, Hongchang Duan, Chenxi Zhang
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Publication number: 20150209767Abstract: Provided is a phosphorus-containing ultrastable Y-type rare earth (RE) molecular sieve and the preparation method thereof. The method is: based on Na Y molecular sieve as a raw material, obtaining “one-exchange one-roast” RE-Na Y-type molecular sieve through the steps of exchanging with RE, pre-exchanging with dispersing, and the first calcination; and then performing ammonium salt exchange, phosphorus modification, and the second calcination on the “one-exchange one-roast” RE-Na Y-type molecular sieve, wherein the sequence of the RE exchange and the pre-exchange with dispersing is unlimited, and the sequence of the ammonium salt exchange and the phosphorus modification is unlimited as well. The obtained molecular sieve contains RE oxide 1-20 wt %, phosphorus 0.1-5 wt %, and sodium oxide no more than 1.2 wt %, and has a crystallization degree of 51-69% and a lattice parameter of 2.449-2.469 nm.Type: ApplicationFiled: July 27, 2012Publication date: July 30, 2015Applicant: PetroChina Company LimitedInventors: Xionghou Gao, Haitao Zhang, Di Li, Xueli Li, Hongchang Duan, Zhengguo Tan, Chaowei Liu, Yunfeng Zheng, Xiaoliang Huang, Jinjun Cai, Chenxi Zhang, Zhishuang Pan, Gengzhen Cao
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Publication number: 20150175432Abstract: The present invention provides a magnesium-modified ultra-stable rare earth type Y molecular sieve and the preparation method thereof, which method is carried out by subjecting a NaY molecular sieve as the raw material to a rare earth exchange and a dispersing pre-exchange, then to an ultra-stabilization calcination treatment, and finally to a magnesium modification. The molecular sieve comprises 0.2 to 5% by weight of magnesium oxide, 1 to 20% by weight of rare earth oxide, and not more than 1.2% by weight of sodium oxide, and has a crystallinity of 46 to 63%, and a lattice parameter of 2.454 nm to 2.471 nm. In contrast to the prior art, in the molecular sieve prepared by this method, rare earth ions are located in sodalite cages, which is demonstrated by the fact that no rare earth ion is lost during the reverse exchange process. Moreover, the molecular sieve prepared by such a method has a molecular particle size D(v,0.5) of not more than 3.0 ?m and a D(v,0.9) of not more than 20 ?m.Type: ApplicationFiled: April 13, 2012Publication date: June 25, 2015Applicant: PetroChina Company LimitedInventors: Xionghou Gao, Haitao Zhang, Hongchang Duan, Chaowei Liu, Di Li, Xueli Li, Zhengguo Tan, Yunfeng Zheng, Xiaoliang Huang, Jinjun Cai, Chenxi Zhang
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Publication number: 20150165428Abstract: The present invention provides a catalytic cracking catalyst for heavy oil and preparation methods thereof. The catalyst comprises 2 to 50% by weight of a phosphorus-containing ultrastable rare earth Y-type molecular sieve, 0.5 to 30% by weight of one or more other molecular sieves, 0.5 to 70% by weight of clay, 1.0 to 65% by weight of high-temperature-resistant inorganic oxides, and 0.01 to 12.5% by weight of a rare earth oxide. The phosphorus-containing ultra-stable rare earth Y-type molecular sieve uses a NaY molecular sieve as a raw material.Type: ApplicationFiled: July 27, 2012Publication date: June 18, 2015Applicant: PetroChina Company LimitedInventors: Xionghou Gao, Haitao Zhang, Di Li, Zhengguo Tan, Hongchang Duan, Xueli Li, Chaowei Liu, Yunfeng Zheng, Xiaoliang Huang, Jinjun Cai, Zhishuang Pan, Xueqin Sun
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Publication number: 20150151284Abstract: The present invention provides an ultra-stable rare earth type Y molecular sieve and the preparation method thereof, which method is carried out by subjecting a NaY molecular sieve as the raw material to a rare earth exchange and a dispersing pre-exchange, then to an ultra-stabilization calcination treatment. The molecular sieve comprises 1 to 20% by weight of rare earth oxide, not more than 1.2% by weight of sodium oxide, has a crystallinity of 51 to 69%, and a lattice parameter of 2.451 nm to 2.469 nm. In contrast to the prior art, in the molecular sieve prepared by this method, rare earth ions are located in sodalite cages, which is demonstrated by the fact that no rare earth ion is lost during the reverse exchange process. Moreover, the molecular sieve prepared by such a method has a molecular particle size D(v,0.5) of not more than 3.0 ?m and a D(v,0.9) of not more than 20 ?m.Type: ApplicationFiled: April 13, 2012Publication date: June 4, 2015Inventors: Xionghou Gao, Haitao Zhang, Zhengguo Tan, Di Li, Dong JI, Hongchang Duan, Chenxi Zhang
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Publication number: 20150080209Abstract: The present invention relates to a heavy oil catalytic cracking catalyst and preparation method thereof. The catalyst comprises 2 to 50% by weight of an ultra-stable rare earth type Y molecular sieve, 0.5 to 30% by weight of one or more other molecular sieves, 0.5 to 70% by weight of clay, 1.0 to 65% by weight of high-temperature-resistant inorganic oxides, and 0.01 to 12.5% by weight of rare earth oxide. The ultra-stable rare earth type Y molecular sieve is obtained as follows: the raw material, NaY molecular sieve, is subjected to a rare earth exchange and a dispersing pre-exchange, and the molecular sieve slurry is filtered, washed and subjected to a first calcination to produce a “one-exchange one-calcination” rare earth sodium Y molecular sieve, wherein the order of the rare earth exchange and the dispersing pre-exchange is not limited; and the “one-exchange one-calcination” rare earth sodium Y molecular sieve is further subjected to ammonium salt exchange for sodium reduction and a second calcination.Type: ApplicationFiled: April 13, 2012Publication date: March 19, 2015Applicant: PetroChina Company LimitedInventors: Xionghou Gao, Haitao Zhang, Zhengguo Tan, Di Li, Dong Ji, Hongchang Duan, Chenxi Zhang
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Publication number: 20150011378Abstract: The present invention relates to a heavy oil catalytic cracking catalyst having a high yield of light oil and preparation methods thereof. The catalyst comprises 2 to 50% by weight of a magnesium-modified ultra-stable rare earth type Y molecular sieve, 0.5 to 30% by weight of one or more other molecular sieves, 0.5 to 70% by weight of clay, 1.0 to 65% by weight of high-temperature-resistant inorganic oxides, and 0.01 to 12.5% by weight of rare earth oxide. The magnesium-modified ultra-stable rare earth type Y molecular sieve is obtained by the following manner: the raw material, a NaY molecular sieve, is subjected to a rare earth exchange, a dispersing pre-exchange, a magnesium salt exchange modification, an ammonium salt exchange for sodium reduction, a second exchange and a second calcination. The catalyst provided in the present invention is characteristic in its high conversion capacity of heavy oil and a high yield of light oil.Type: ApplicationFiled: April 13, 2012Publication date: January 8, 2015Applicant: PetroChina Company LimitedInventors: Xionghou Gao, Haitao Zhang, Hongchang Duan, Di Li, Xueli Li, Zhengguo Tan, Xiaoliang Huang, Jinjun Cai, Yunfeng Zheng, Chenxi Zhang, Gengzhen Cao
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Patent number: 8545803Abstract: Modified molecular sieve characterized by improved sodium-resisting contamination activity and preparation method thereof are provided. The method comprises: adding molecular sieve in phosphorus-containing organic solution, and reacting for 10-200 minutes at temperature of 70-200° C. and pressure of 0.2-1.2 MPa, and then filtering, drying and calcining. The said modified molecular sieve contains 90-99 wt. % molecular sieve as dry basis and 1-10 wt. % phosphorus as oxide. The said method can improve the capability of sodium-resisting contamination effectively, and its technology is simple and fits the existing catalyst production apparatus and process. The said modified molecular sieve has high sodium-resisting contamination activity, and the model catalyst by sodium contamination has high activity retention.Type: GrantFiled: December 1, 2009Date of Patent: October 1, 2013Assignee: PetroChina Company LimitedInventors: Xionghou Gao, Dong Ji, Haitao Zhang, Hongchang Duan, Di Li, ZhengGuo Tan, Yi Su, Chenxi Zhang, Yi Wang, Yanqing Ma, Yanbo Sun
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Publication number: 20120275994Abstract: A method for producing double-component modified molecular sieve comprises adding molecular sieve to an aqueous solution containing phosphorus to form a mixture, allowing the mixture to react at pH of 1-10, temperature of 70-200° C. and pressure of 0.2-1.2 MPa for 10-200 min, and then filtering, drying and baking the resultant to obtain phosphorus-modified molecular sieve, and then adding the phosphorus-modified molecular sieve to an aqueous solution containing silver ions, allowing the phosphorus-modified molecular sieve to react with silver ions at 0-100° C. in dark condition for 30-150 min, and then filtering, drying and baking. The obtained double-component modified molecular sieve contains 88-99 wt % molecular sieve with a ratio of silica to alumina between 15 and 60, 0.5-10 wt % phosphorus (based on oxides) and 0.01-2 wt % silver (based on oxides), all based on dry matter. A catalyst produced from the double-component modified molecular sieve has improved hydrothermal stability and microactivity.Type: ApplicationFiled: December 1, 2009Publication date: November 1, 2012Applicant: PetroChina Company LimitedInventors: Xionghou Gao, Dong Ji, Haitao Zhang, Hongchang Duan, Di Li, ZhengGuo Tan, Yi Su, Zhicheng Tang, Yi Wang, Yanqing Ma, Yanbo Sun
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Publication number: 20120213695Abstract: Modified molecular sieve characterized by improved sodium-resisting contamination activity and preparation method thereof are provided. The method comprises: adding molecular sieve in phosphorus-containing organic solution, and reacting for 10-200 minutes at temperature of 70-200° C. and pressure of 0.2-1.2 MPa, and then filtering, drying and calcining. The said modified molecular sieve contains 90-99 wt. % molecular sieve as dry basis and 1-10 wt. % phosphorus as oxide. The said method can improve the capability of sodium-resisting contamination effectively, and its technology is simple and fits the existing catalyst production apparatus and process. The said modified molecular sieve has high sodium-resisting contamination activity, and the model catalyst by sodium contamination has high activity retention.Type: ApplicationFiled: December 1, 2009Publication date: August 23, 2012Applicant: PetroChina Company LimitedInventors: Xionghou Gao, Dong Ji, Haitao Zhang, Hongchang Duan, Di Li, ZhengGuo Tan, Yi Su, Chenxi Zhang, Yi Wang, Yanqing Ma, Yanbo Sun
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Patent number: 7727924Abstract: A method for preparing cracking catalyst. The method comprises making catalyst slurry having a homogeneous distribution of molecular sieve slurry, pseudoboehmite, clay, inorganic acid and aluminum-containing binder; and subsequent spray drying. Inorganic acid is added prior to the addition of pseudoboehmite; addition of molecular sieve is added after the addition of inorganic acid; and a phosphatic dispersant is added during preparation. Compared to conventional methods of preparing FCC catalyst slurry, the inventive catalyst slurry viscosity is decreased and the fluidity thereof is improved, while catalyst anti-friction is maintained. The solid content of the FCC catalyst slurry can be increased to about 40% or more. The gel forming time is significantly reduced with increased productivity and decreased catalyst production cost. Meanwhile, the catalyst has high pore volume and improved micro-reactivity. Overall reactivity performance of the catalyst is also improved.Type: GrantFiled: August 28, 2007Date of Patent: June 1, 2010Assignee: Petrochina Company LimitedInventors: Conghua Liu, Zhengguo Tan, Wei Ding, Shuqin Zheng, Xinmei Pang, Shuhong Sun, Dong Wang, Qiuxia Teng, Tong Lu
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Publication number: 20080058197Abstract: A method for preparing cracking catalyst. The method comprises making catalyst slurry having a homogeneous distribution of molecular sieve slurry, pseudoboehmite, clay, inorganic acid and aluminum-containing binder; and subsequent spray drying. Inorganic acid is added prior to the addition of pseudoboehmite; addition of molecular sieve is added after the addition of inorganic acid; and a phosphatic dispersant is added during preparation. Compared to conventional methods of preparing FCC catalyst slurry, the inventive catalyst slurry viscosity is decreased and the fluidity thereof is improved, while catalyst anti-friction is maintained. The solid content of the FCC catalyst slurry can be increased to about 40% or more. The gel forming time is significantly reduced with increased productivity and decreased catalyst production cost. Meanwhile, the catalyst has high pore volume and improved micro-reactivity. Overall reactivity performance of the catalyst is also improved.Type: ApplicationFiled: August 28, 2007Publication date: March 6, 2008Applicant: PETROCHINA COMPANY LIMITEDInventors: Conghua Liu, Zhengguo Tan, Wei Ding, Shuqin Zheng, Xinmei Pang, Shuhong Sun, Dong Wang, Qiuxia Teng, Tong Lu