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Hydrocarbon oil cracking method for reducing sulfur content of gasoline

A sulfur content, gasoline technology, applied in cracking, catalytic cracking, petroleum industry, etc., can solve the problems of high cost of desulfurization cracking catalyst, increase olefin yield, etc., achieve low price, increase olefin yield, reduce gasoline sulfur content Effect

Active Publication Date: 2013-04-24
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0014] Therefore, the object of the present invention is to provide a low-cost hydrocarbon oil cracking method that reduces the sulfur content of gasoline and increases the yield of olefins in liquefied gas in view of the high cost of metal vanadium-supported desulfurization cracking catalysts in the prior art.

Method used

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  • Hydrocarbon oil cracking method for reducing sulfur content of gasoline

Examples

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Comparison scheme
Effect test

Embodiment 1

[0030] In this example, a black vanadium ore K-B with low vanadium content is used as the desulfurization active component of the catalyst, and its characteristic chemical composition is 14.6Al 2 o 3 ●50.2SiO2 2 ●3.6V 2 o 5 ●10.4Fe 2 o 3 ●3.5P 2 o 5 8.6K 2O ● 2.2MgO ● 2.2CaO ● 2.0BaO, the vanadium ore is composed of 47% quartz, 8.9% feldspar and 44.1% clay minerals, and its diffraction spectrum is shown in the figure. Vanadium ore needs to be ground into powder by ball mill before use.

[0031] Pseudo-boehmite (solid content 61.7% by weight, produced by Shandong Aluminum Plant) was added into deionized water, and after stirring for 30 minutes, adding concentration of 36% hydrochloric acid (chemically pure, produced by Beijing Chemical Plant) was acidified, and the aluminum The ratio is controlled at 0.15-0.2. At this time, the pH value of the slurry is about 1.0-1.5. After stirring at room temperature for 1 hour, the temperature is raised to 65°C and then statically a...

Embodiment 2

[0036] Vanadium ore used in the present embodiment is the same as embodiment 1.

[0037] The preparation process of the desulfurization composition is the same as that in Example 1, the difference lies in the content of kaolin and vanadium ore, and the desulfurization composition Z-2 is obtained.

[0038] The composition of composition Z-2 is: 35% by weight of REHY molecular sieve, 25% by weight of kaolin, 10% by weight of aluminum sol, 20% by weight of pseudo-boehmite, and 10% by weight of K-B.

[0039] The cracking reaction conditions are the same as in Example 1, and the cracking evaluation results are shown in Table 2.

Embodiment 3

[0041] Vanadium ore used in the present embodiment is the same as embodiment 1.

[0042] The preparation process of the desulfurization composition is the same as that in Example 1, the difference lies in the content of kaolin and vanadium ore, and the desulfurization composition Z-3 is obtained.

[0043] The composition of composition Z-3 is: 35% by weight of REHY molecular sieve, 20% by weight of kaolin, 10% by weight of aluminum sol, 20% by weight of pseudo-boehmite, and 15% by weight of K-B.

[0044] The cracking reaction conditions are the same as in Example 1, and the cracking evaluation results are shown in Table 2.

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Abstract

The invention relates to a hydrocarbon oil cracking method for reducing the sulfur content of gasoline. The method is characterized in that sulfur-containing hydrocarbon oil is in contact with a desulfurizing composition under catalytic cracking conditions, wherein the desulfurizing composition contains vanadium ore which is used as an active desulfurizing component; when measured by oxides, the desulfurizing composition comprises the following chemical components in parts by weight: 10-16 parts of Al2O3, 40-55 parts of SiO2, 2-10 parts of V2O5, 10-18 parts of Fe2O3, 3-6 parts of P2O5, 7-9 parts of K2O, 1-3 parts of MgO, 0-3 parts of CaO and 1-3 parts of BaO; and the vanadium ore mainly comprises quartz, feldspar and clay mineral. By using the low-price vanadium ore as the active desulfurizing component, the method effectively reduces the sulfur content of gasoline in the FCC (fluid catalytic cracking) process, increases the alkene yield in liquefied gas, and lowers the operating cost.

Description

technical field [0001] The object of the present invention is to provide a method for cracking hydrocarbon oil, in particular to a method for catalytic cracking to reduce the sulfur content of gasoline. Background technique [0002] Fluid Catalytic Cracking (FCC) is a petroleum refining process, which is the main process of converting heavy fractions such as vacuum distillate oil or residues of heavier components into fractions with smaller molecules. It has been used on a large scale in petroleum refining commercial applications. About 70-80% of gasoline comes from gasoline obtained from fluid catalytic cracking (FCC), and about 90% of the sulfur comes from FCC gasoline. Due to the increasing emphasis on environmental protection and the emission of Euro II and Euro III With the promulgation of standards, the restrictions on sulfur content, olefins and aromatics in gasoline have become more stringent. Therefore, the removal of sulfur compounds in the catalytic cracking proc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G11/05
Inventor 郑金玉周继红罗一斌舒兴田
Owner CHINA PETROLEUM & CHEM CORP
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