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Inferior heavy oil cracking and gasifying catalyst

A low-quality heavy oil and catalyst technology, applied in physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, molecular sieve catalysts, etc. In order to achieve the effect of improving the yield and the reaction rate of coke gasification

Active Publication Date: 2012-08-29
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The common problems are: the concentration of coking precursors in the coking reactor increases, covering the surface of the fluidized medium, the particles stick to each other, the particle size distribution of the particles in the system becomes wider, and the fluidization effect becomes worse
The regeneration temperature is generally around 700°C. If the regeneration temperature is higher than 750°C, the hydrothermal stability of the catalyst will be seriously challenged.

Method used

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  • Inferior heavy oil cracking and gasifying catalyst
  • Inferior heavy oil cracking and gasifying catalyst
  • Inferior heavy oil cracking and gasifying catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Take 6 kg of kaolin and place it in a container, add 18 kg of deionized water, stir at 30°C and mix evenly, while stirring, add 2 kg of a mixture of potassium oxide and calcium oxide, wherein the atomic ratio of potassium to calcium is 0.2, stir Evenly set aside.

[0028] Take 1 kg of ZRP molecular sieve with a silicon-aluminum ratio of 20, add 1.5 kg of deionized water and stir evenly for use.

[0029] Take 0.7 kg of pseudo-boehmite, add 1.2 kg of deionized water, stir evenly, add 0.3 kg of aluminum sol, stir for 10 minutes, add appropriate amount of hydrochloric acid to make the pH of the slurry between 1.2 and 3.0, and let it stand for 30 minutes.

[0030] The above three slurries were mixed and stirred for 20 minutes, spray-dried to make the average particle size of the solid particles between 65-90 μm, and calcined at 600° C. for 60 minutes to obtain the catalyst, which was designated as Cat-1.

Embodiment 2～7

[0032]Catalysts Cat-2, Cat-3, Cat-4, Cat-5, Cat-6, and Cat-7 with different component contents were prepared according to the preparation method of Example 1 by adjusting the dosage of each component. Its composition is shown in Table 1.

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Abstract

The invention discloses an inferior heavy oil cracking and gasifying catalyst, comprising carrier, binder, gasification active components and cracking active components, wherein the gasification active components are alkali metals and alkaline-earth metals, by taking the catalyst total content as a reference, the oxide content is 2-30%, the atom ratio of the alkali metals to the alkaline-earth metals is (0.05-1.1):1, and the cracking active components are shape selective zeolite with the silica alumina ratio within 20-200. The catalyst aims to the inferior heavy oil processing procedure, considers heavy oil cracking and coke high temperature gasification and improves light oil yield and coke gasification reaction rate obviously.

Description

technical field [0001] The invention relates to a catalyst used in the coking of inferior heavy oil and the hydrogen production process of coke gasification. Background technique [0002] Hydrogenation has become one of the countermeasures against the worldwide development trend of heavy and inferior crude oil and the increasingly stringent environmental protection regulations. However, the current hydrogen production method has high production costs, and the output is difficult to meet the needs of hydrogenation. The development of cheap hydrogen production methods is very important. [0003] Currently, heavy and low-quality feedstocks pose challenges to the catalytic cracking process itself and the catalysts. Non-catalytic processing of low-quality heavy oil, including delayed coking, fluidized coking, flexible coking, solvent deasphalting, etc., has received increasing attention. However, the coking process has the problems of low liquid recovery and low-quality coke t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J29/06B01J29/40B01J29/70B01J23/04B01J37/00C10G11/05C10J3/02
CPCY02P20/52
Inventor 吴治国王子军门秀杰汪燮卿
Owner CHINA PETROLEUM & CHEM CORP
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