Catalysis method for improving quality of gasoline in low quality

A technology for catalytic upgrading and gasoline, applied in the multi-stage series refining process, etc., can solve the problems of difficulty, gas, and large amount of engineering transformation, and achieve easy start and operation, low operating temperature, and construction costs. less effect

Active Publication Date: 2008-09-17
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0018] The above catalytic upgrading processes are all carried out in the traditional catalytic cracking reaction zone, using double riser or triple riser technology, which has the remarkable feature of flexible feeding, but the device is difficult to operate, and there are too many gases in the product distribution
However, the process of using riser plus bed reactor, although the product distribution is relatively improved, and the operation difficulty is relatively small, but the project investment is large, gasoline upgrading is inflexible, and the heavy oil processing capacity of the device is affected
[0019] To sum up, although many gasoline catalytic upgrading methods are disclosed in the prior art, there are generally problems such as large amount of engineering transformation or difficult operation in the implementation process of these methods, and the decline in the olefin content of gasoline after upgrading is limited. , it is difficult to meet the increasingly stringent environmental regulations

Method used

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  • Catalysis method for improving quality of gasoline in low quality
  • Catalysis method for improving quality of gasoline in low quality
  • Catalysis method for improving quality of gasoline in low quality

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] This example illustrates the results of catalytic conversion of gasoline from different sources using the method provided by the present invention.

[0044] Catalytic upgrading experiments were carried out in a continuous reaction-regeneration small-scale dense-phase uniform velocity fluidized bed reactor with the feed oil listed in Table 1 and the catalyst 2 (CAT2) listed in Table 2. The gasoline raw material is mixed with high-temperature steam and enters the dense-phase uniform-velocity fluidized-bed reactor to contact with the catalyst for reaction. The reaction product, steam and raw catalyst are separated in the settler, and the reaction product is further separated into gas and liquid. The raw catalyst is stripped and then enters the regenerator for burning. After the regeneration is completed, the catalyst is recycled.

[0045] Table 3 shows the experimental conditions, experimental results and gasoline properties. It can be seen from Table 3 that after catalyt...

Embodiment 2

[0047] This example illustrates: adopt the method provided by the present invention, use the catalytic conversion effect of different types of catalysts.

[0048] Catalytic upgrading experiments were carried out in a continuous reaction-regeneration small-scale dense-phase uniform velocity fluidized bed reactor with the feed oil 1 listed in Table 1 and the catalyst listed in Table 2. The gasoline raw material is mixed with high-temperature steam and then enters the reactor to contact and react with the catalyst. The reaction product, steam and raw catalyst are separated in the settler, the reaction product is further separated into gas and liquid, the raw catalyst enters the regenerator after being stripped and burnt, and the regenerated catalyst is recycled for use.

[0049] Table 4 is the experimental conditions, experimental results and gasoline properties. It can be seen from Table 4 that there are certain differences in the effect of the same raw material after being cat...

Embodiment 3

[0051] This example illustrates: using the method provided by the invention, the catalytic conversion effect of gasoline raw materials under different operating conditions.

[0052] Catalytic upgrading experiments were carried out in a continuous reaction-regeneration small-scale dense-phase uniform velocity fluidized bed reactor with feed oil 3 listed in Table 1 and catalyst 1 listed in Table 2. The gasoline raw material is mixed with high-temperature water vapor and enters the reactor to contact and react with the catalyst at a reaction temperature of 250-550°C. The reaction product, steam and raw catalyst are separated in the settler, the reaction product is further separated into gas and liquid, the raw catalyst enters the regenerator after being stripped and burnt, and the regenerated catalyst is recycled for use.

[0053] Table 5 is the experimental conditions, experimental results and gasoline properties. It can be seen from Table 5 that different operating conditions ...

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Abstract

A catalyst modifying process for low-grade gasoline includes reaction between raw gasoline and catalyst in fluidized-bed reactor, lifting the resultant mixture in the settling unit of catalytic cracking reactor, oil separation, and product separation.

Description

technical field [0001] The invention belongs to a method for catalytic upgrading of petroleum hydrocarbons in the absence of hydrogen, more specifically, a method for catalytic upgrading of low-quality gasoline Background technique [0002] In the petroleum processing industry, catalytic cracking technology and engineering is one of the most important process engineering. Almost all existing catalytic cracking technologies use riser reactors and reaction-regeneration system processes, and the riser is generally 25 to 40 meters long. The preheated raw oil enters the riser reactor through the feed nozzle and contacts with the high-temperature catalyst from the regenerator. The raw oil vaporizes and undergoes cracking reactions. Flow upward along the riser, reacting while flowing. Most of the current response time is 2 to 3 seconds. During the reaction process, coke is continuously generated and deposited on the surface of the catalyst, resulting in a decrease in the activit...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G53/06
Inventor 吴青何鸣元张久顺许友好陈昀
Owner CHINA PETROLEUM & CHEM CORP
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