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Processing method by shale oil through catalytic cracking

A catalytic cracking and shale oil technology, which is applied in the field of efficient utilization of shale oil resources, can solve the problems of high content and low conversion efficiency, and achieve the effects of high conversion rate, no hydrogen consumption, and long-term continuous production

Active Publication Date: 2016-05-18
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In order to overcome the defects of low conversion efficiency in existing shale oil processing methods and the high content of sulfur, nitrogen and aromatics in fuel oil, provide a method that can efficiently convert shale oil raw materials into a large amount of light and clean fuel oil processing method

Method used

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  • Processing method by shale oil through catalytic cracking

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0074] according to figure 1 shale oil A is used as the raw material for catalytic cracking, and the test is carried out on a turbulent fluidized bed reactor. Contact with catalyzer countercurrent, adopt CAT-4 catalyzer, inject a small amount of water between adsorption zone and cracking zone as cooling medium (the reactor internal diameter of adsorption zone is identical with the reactor internal diameter of described cracking zone, and the length of described adsorption zone is 40% of the length of the cracking zone). After being preheated at 240°C, shale oil A enters the bottom of the adsorption zone at the lower part of the fluidized bed reactor. With the steam fluidization medium flowing from bottom to top, at the adsorption temperature of 280°C, the cold catalyst (the first catalytic cracking catalyst) and the The weight ratio of shale oil is 8, the pressure is 0.4MPa, and the adsorption time is 120s. The adsorption reaction is carried out to remove impurities such as b...

Embodiment 2

[0088] according to figure 2 The process of shale oil B is used as the raw material for catalytic cracking, and the test is carried out on the turbulent fluidized bed reactor. The reactor and the regenerator are arranged side by side, and the shale oil and the catalyst are in contact with the flow. Catalyst, in addition to introducing the hot regenerant from the external regenerator, fresh catalyst at room temperature is introduced into the adsorption zone to obtain a cold catalyst with high adsorption capacity (the first catalytic cracking catalyst). After being preheated at 300°C, shale oil B enters the bottom of the adsorption zone at the lower part of the fluidized bed reactor. With the steam fluidized medium flowing from bottom to top, at the adsorption temperature of 400°C, the weight ratio of cold catalyst to shale oil B 5.0, the pressure is 0.2MPa, and the adsorption time is 120s, and the adsorption reaction is carried out to remove impurities such as basic nitrides, ...

Embodiment 3

[0090] Carry out catalytic cracking according to the method identical with embodiment 2, difference is: introduce the fresh catalyst that exchanges heat with hot regenerative catalytic cracking catalyst as the first catalytic cracking catalyst in the adsorption zone at the bottom of the reactor, operating conditions and product distribution are listed in Table 3.

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Abstract

The invention provides a processing method by shale oil through catalytic cracking. The method is characterized in that a turbulent fluidized bed reactor is divided into an adsorption zone and a cracking zone, under non-hydrogen atmosphere, shale oil is introduced into the adsorption zone of the turbulent fluidized bed reactor with low temperature, impurity such as a basic nitride, colloid and heavy metal can be absorbed and removed, and then the shale oil is introduced into the cracking zone of the turbulent fluidized bed reactor and is contacted with a regeneration agent with high temperature and high activity for performing a catalytic cracking reaction. The invention provides the method for producing a lightweight product by the shale oil through direct catalytic cracking, and has the advantages of high shale oil conversion capability, low dry gas and coke, and high liquid yield.

Description

technical field [0001] The invention relates to a processing method for catalytic cracking of shale oil, more specifically, to a method of firstly absorbing and removing impurities of shale oil by using a turbulent fluidized bed reactor, and then catalytically cracking, so as to greatly improve the conversion of shale oil The efficiency and reduce the yield of dry gas and coke, so as to realize the method of efficient utilization of shale oil resources. Background technique [0002] Shale oil is the product of thermal decomposition of organic matter after thermal processing of oil shale. It is similar to natural petroleum, but contains more unsaturated hydrocarbons than natural petroleum, and contains non-hydrocarbon organic compounds such as nitrogen, sulfur, and oxygen. . The world's oil shale reserves are equivalent to about 400 billion tons of shale oil, far exceeding the total natural oil reserves; while my country's oil shale resources are very rich, with reserves of ...

Claims

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Application Information

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IPC IPC(8): C10G55/06
Inventor 唐津莲龚剑洪李泽坤
Owner CHINA PETROLEUM & CHEM CORP
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