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Hydrogenation cracking method of high-output diesel oil from high-nitrogen content heavy raw material

A technology of hydrocracking and high nitrogen content, applied in the field of hydrocarbon oil cracking, can solve the problems of increasing the load of the hydrotreating reactor, and achieve the effects of improving the efficiency of hydrodenitrogenation, increasing the yield, and avoiding the cracking reaction

Active Publication Date: 2008-12-17
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

Since all the effluent products of the cracking reactor enter the hydrofinishing reactor together with the raw oil in this method, the load on the hydrofinishing reactor is increased

Method used

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  • Hydrogenation cracking method of high-output diesel oil from high-nitrogen content heavy raw material

Examples

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Embodiment

[0031] The feed oil A used in the embodiment is a heavy feed with high nitrogen content, and the feed oil B is a heavy feed with low nitrogen content. The difference is that the nitrogen content of feedstock oil A is 3100 μg / g, and the nitrogen content of feedstock oil B is 810 μg / g.

[0032] The trade names of the hydrorefining catalyst and the hydrocracking catalyst used in the examples are RN-2 and RT-30, respectively, produced by Changling Catalyst Factory of Sinopec Catalyst Company.

[0033] The raw material oil A enters the first hydrofinishing reactor, and the reaction product enters the hot flash tank, and the liquid phase stream at the bottom of the hot flash tank and the raw material oil B are mixed with hydrogen and enter the second hydrofinishing reactor for hydrogenation For the refining reaction, the weight ratio of feed oil A to feed oil B is 1:1. After the effluent of the second hydrofinishing reactor is mixed with the effluent of the hydrocracking reactor, i...

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Abstract

Hydrogenation cracking method for qualified diesel oil from high-nitrogen content heavy raw oil is carried out by reacting by the first hydrogenation refining reactor, entering the reactant into thermal flash pot to gas-liquid separate, entering the separated liquid-phase flow and low-nitrogen content heavy raw oil into the second hydrogenation refined reactor, hydrogenation refine reacting, mixing effluent of the second hydrogenation refining reactor with effluent hydrogenation cracking reactor, entering into high-pressure separator, low-pressure separator and fractionating tower sequentially, separating out naphtha fraction, diesel fraction and tail-oil fraction, circulating all or part tail-oil fraction to hydrogenation cracking reactor for reacting. It's efficient and saves resources.

Description

technical field [0001] The invention belongs to a hydrocarbon oil cracking method for obtaining low-boiling fractions in the presence of hydrogen, more specifically, it belongs to a hydrocracking method for producing more diesel oil from heavy feed oil with high nitrogen content. Background technique [0002] In recent years, with the deep exploitation of global crude oil, the quality of crude oil has become worse and worse, and the relative density and sulfur content have been rising; while the demand for middle distillate oil (diesel and kerosene) in the world oil market has increased, heavy fuel oil development in the direction of ever-decreasing demand. Therefore, as a non-renewable energy source, the full and reasonable utilization of its heavy fraction is an important means to implement the sustainable development of resources. In my country, on the one hand, with the rapid development of the national economy, the demand for light fuel oil continues to increase, espec...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G65/12
Inventor 董建伟胡志海熊震霖董松涛聂红李大东
Owner CHINA PETROLEUM & CHEM CORP
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