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Hydrocracking method

A hydrocracking and catalyst technology, which is used in hydrotreating process, petroleum industry, processing of hydrocarbon oil, etc., can solve the problem that the density and cetane number properties of diesel oil cannot be taken into account, the octane number of gasoline fractions is low, and the properties of raw materials are deteriorated. and other problems, to achieve the effect of reducing diesel density, increasing diesel cetane number and improving quality

Active Publication Date: 2017-12-12
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] The purpose of the present invention is to provide a hydrocracking method to solve the problems in the prior art that the properties of raw materials are degraded, the properties of diesel oil density and cetane number cannot be taken into account at the same time, and the problems of low octane number of gasoline fraction

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Embodiment 1

[0046] Hydrocracking raw oil A is in the first reaction zone, the hydrogen partial pressure at the reaction inlet is 14.0MPa, and the refining and cracking volume space velocity are 1.0h respectively -1 and 1.4h -1 , the refining and cracking reaction temperatures are respectively 360°C and 365°C, respectively contacting the hydrorefining catalyst and the hydrocracking catalyst I for reaction to obtain the product in the first reaction zone; the product in the first reaction zone is cooled and gas After liquid separation and fractionation, light naphtha fraction (C5-65°C), heavy naphtha fraction (65-145°C), light diesel fraction (145-205°C), medium diesel fraction (205-300°C) are obtained ), heavy diesel fraction (300~370°C) and tail oil fraction (>370°C). After the light diesel fraction and heavy diesel fraction are mixed, it will be used as product diesel oil to exit the device. All the medium diesel fraction will be mixed with the low fraction gas in the first reaction zon...

Embodiment 2

[0061] Hydrocracking raw oil A is in the first reaction zone, the hydrogen partial pressure at the reaction inlet is 15.0MPa, and the refining and cracking volume space velocity are 1.0h respectively -1 and 1.5h -1 , the refining and cracking reaction temperatures are respectively 380°C and 390°C, respectively contacting the hydrorefining catalyst and the hydrocracking catalyst I for reaction to obtain the product in the first reaction zone; the product in the first reaction zone is cooled and gas After liquid separation and fractionation, light naphtha fraction (C5-65°C), heavy naphtha fraction (65-145°C), light diesel fraction (145-205°C), medium diesel fraction (205-300°C) are obtained ), heavy diesel oil fraction (300-370°C) and tail oil fraction (>370°C), the >370°C tail oil fraction is fully circulated to the first reaction zone for further transformation. The light diesel fraction and the heavy diesel fraction are mixed and used as the product diesel to exit the device...

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Abstract

Disclosed is a hydrocracking method. Hydrocracking raw materials contact a hydrofining catalyst and a hydrocracking catalyst I in order and reacts in a first reaction area; performing cooling on a product obtained in the first reaction area; performing gas-liquid separation and fractionation to obtain a naphtha fraction, a light diesel oil fraction, a middle diesel oil fraction, a heavy diesel oil fraction and a tail oil fraction; and performing a further reaction on the middle diesel oil fraction in a second reaction area to obtain a high-octane gasoline fraction. The method provided by the invention can be used to effectively increase diesel oil quality, consider two aspects of decrease of density of diesel oil and increase of cetane number of diesel oil, produce qualified or high-quality product diesel oil and reduce the cost for producing high-octane gasoline components.

Description

technical field [0001] The invention belongs to a method for treating hydrocarbon oil under the condition of hydrogen, more specifically, it is a hydrocracking method for producing diesel oil and gasoline. 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, with the rapid development of the national economy, the demand for light fuel oil (especially gasoline, kerosene and diesel) is increasing; at the same time, the improvement of product quality has becom...

Claims

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Application Information

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IPC IPC(8): C10G67/02
CPCC10G67/02
Inventor 赵阳蒋东红陈元君赵广乐胡志海
Owner CHINA PETROLEUM & CHEM CORP