Hydrocarbons conversion catalyzer

A hydrocarbon conversion and catalyst technology, applied in physical/chemical process catalysts, molecular sieve catalysts, catalyst activation/preparation and other directions, can solve problems such as increased propylene yield, and achieve increased selectivity, high low-carbon olefin yield, and yield high effect

Active Publication Date: 2008-03-05
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The use of this catalyst can increase the content of isoparaffins in gasoline, while increasing the production of propylene and isobutane, but its propylene yield is only slightly increased

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0052] Examples of the method for producing the hydrocarbon conversion catalyst of the present invention include the following methods, but the present invention is not limited thereto.

[0053] Mix all or part of the heat-resistant inorganic oxide and / or its precursor with water and make a slurry, then add or not add the clay to the obtained slurry, and at this time, further add the remaining part of the heat-resistant inorganic oxide oxide and / or its precursor, and then add the zeolite mixture into the obtained slurry, mix and beat evenly, dry the obtained slurry, and then roast it. Wherein, before adding the zeolite mixture, before or after adding the clay, an acid is added to the resulting slurry to adjust the pH value of the slurry to 1-5. After the pH value reaches the specified range, the obtained slurry is aged at a temperature of 30-90° C. for 0.1-10 hours; after the aging is completed, the remaining part of the heat-resistant inorganic oxide and / or its precursor is a...

Embodiment 1

[0067] With 100g (dry basis) zeolite beta (production of Qilu Catalyst Factory, SiO 2 / Al 2 o 3 = 25) with NH 4 Cl solution exchange wash to Na 2 The O content is lower than 0.2%, and the filter cake is obtained by filtration; add 6.8gH 3 PO 4 (concentration 85%) and 3.2gCu(NO 3 ) 2 ·3H 2 O was dissolved in 90g of water, mixed with the filter cake, impregnated and dried; the obtained sample was roasted at 550°C for 2 hours to obtain the modified β boiling B1 containing phosphorus and transition metal copper. The anhydrous chemical expression of B1 is: 0.1Na 2 O 8.2 Al 2 o 3 4.0P 2 o 5 1.0CuO 86.7SiO 2 .

Embodiment 2

[0069] 100g (dry basis) zeolite beta with NH 4 Cl solution exchange wash to Na 2 The O content is lower than 0.2%, and the filter cake is obtained by filtration; add 12.5gH 3 PO 4 (concentration 85%) with 6.3gCuCl 2 Dissolved in 90g of water, mixed with filter cake, impregnated and dried; the obtained sample was roasted at 550°C for 2 hours to obtain modified zeolite beta B2 containing phosphorus and transition metal copper. The anhydrous chemical expression of B2 is: 0.1Na 2 O 7.0 Al 2 o 3 6.9P 2 o 5 3.5CuO 82.5SiO 2 .

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Abstract

The hydrocarbon converting catalyst contains zeolite mixture in 1-60 wt%, heat resistant inorganic oxide in 5-99 wt% and clay in 0-70 wt%. The zeolite mixture contains phosphorus and transition metal modified beta-zeolite 1-75 wt%, zeolite in MFI structure 25-99 wt% and macroporous zeolite 0-74 wt%. The phosphorus and transition metal modified beta-zeolite has the anhydrous chemical expression of (0-0.3)Na2O.(0.5-10)Al2O3.(1.3-10)P2O5.(0.7-15)MxOy.(64-97)SiO2, where, the M transition metal is one or several selected from Fe, Co, Ni, Cu, Mn, Zn and Sn, x is atom number of M and y is M is one number for meeting the requirement of oxidation state. The catalyst of the present invention has high hydrocarbon converting capacity and high low carbon olefin yield, especially high propylene yield. It may be applied in the catalytically cracking of hydrocarbon to prepare low carbon olefin.

Description

technical field [0001] The present invention relates to a hydrocarbon conversion catalyst, more particularly, to a catalyst capable of catalytically cracking petroleum hydrocarbons to produce C 2 ~C 4 Zeolite-containing hydrocarbon conversion catalysts for olefins. Background technique [0002] Low carbon olefins (C 2 ~C 4 Olefins) are important petrochemical raw materials. To prepare low-carbon olefins from petroleum hydrocarbons, steam cracking methods using gaseous hydrocarbons, naphtha, kerosene, light diesel oil and vacuum residue as raw materials are usually used. Conventional catalytic cracking processes When producing gasoline and light diesel oil, low-carbon olefins are also by-produced, but their yields only account for less than 15% of the total amount of raw oil. [0003] There have been many patent reports on the production of light olefins from petroleum hydrocarbons by catalytic cracking or cracking. In some patents, metal-supported catalysts are used, wi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J29/80B01J29/064B01J27/14B01J21/16B01J21/04C10G47/20C07C11/02
CPCB01J29/7007C04B2235/3281B01J29/7057C04B2235/3201C04B35/18C04B2235/3284C04B2235/3293B01J2229/42B01J2229/20B01J29/7615C10G2400/20B01J37/0045B01J29/40C04B2235/3279C04B2235/447B01J29/7815B01J29/80C04B2235/3262C04B2235/3272C04B2235/3275B01J37/0234B01J37/0219B01J35/023B01J35/04B01J35/1076B01J35/1095B01J29/072C10G11/05
Inventor 刘宇键田辉平舒兴田龙军罗一斌谢朝钢陈振宇赵留周朱玉霞陆友保
Owner CHINA PETROLEUM & CHEM CORP
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