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Hydrocracking method of paraffin-based diesel oil

A hydrocracking and paraffin-based technology, which is applied in the petroleum industry, hydroprocessing process, and hydrocarbon oil treatment, and can solve the problems of high equipment investment and complicated operation

Pending Publication Date: 2020-05-05
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The present invention can completely convert the difficult-to-convert tail oil fractions into naphtha fractions under the conditions of high space velocity and low severity. By adopting the improved method of the present invention, the added value of dry gas, liquefied gas and light naphtha is reduced. Low product yield improves the selectivity of heavy naphtha, but the method has high equipment investment and complicated operation

Method used

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  • Hydrocracking method of paraffin-based diesel oil
  • Hydrocracking method of paraffin-based diesel oil
  • Hydrocracking method of paraffin-based diesel oil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Using raw oil 1 as the raw material, the hydrorefining reactor is filled with FF-56 catalyst, and the hydrocracking reactor is equipped with 3 catalyst beds, and the catalysts are loaded sequentially along the flow direction ,catalyst and Catalyst III, the catalyst loading volume ratio is 1:1:1.

Embodiment 2

[0039] Using raw oil 1 as the raw material, the hydrorefining reactor is filled with FF-56 catalyst, and the hydrocracking reactor is equipped with 3 catalyst beds, and the catalysts are loaded sequentially along the flow direction ,catalyst and Catalyst III, the catalyst loading volume ratio is 2:1:1.

Embodiment 3

[0041] Using raw oil 1 as the raw material, the hydrorefining reactor is filled with FF-56 catalyst, and the hydrocracking reactor is equipped with 3 catalyst beds, and the catalysts are loaded sequentially along the flow direction ,catalyst and Catalyst III, the catalyst loading volume ratio is 1:2:1.

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Abstract

The invention discloses a hydrocracking method of paraffin-based diesel oil. The hydrocracking method comprises the following steps: (1) mixing a paraffin-based diesel oil raw material with hydrogen,and feeding the mixture into a hydrofining reactor for desulfurization, denitrification and aromatic saturation reaction; (2) enabling an effluent obtained in the step (1) to enter a hydrocracking reactor, wherein the mass content of a Y molecular sieve in a hydrocracking catalyst filled in the hydrocracking reactor is in a high-low-high tendency along the material flow direction; and (3) carryingout gas-liquid separation and liquid-phase fractionation on the effluent of the hydrocracking reactor to obtain naphtha, aviation kerosene and diesel oil. According to the method, the temperature distribution of each bed of the hydrocracking reactor is improved while the yield of heavy naphtha with high aromatic potential content is increased, and the operation stability of the device is improved.

Description

technical field [0001] The invention relates to a hydrocracking method for paraffin-based diesel oil, in particular to a hydrocracking method for producing naphtha by using paraffin-based or partially paraffin-based diesel oil as raw material. Background technique [0002] Hydrocracking technology has the characteristics of strong adaptability to raw materials, great flexibility in production operations and product plans, and good product quality. It can directly convert various heavy and low-quality feedstocks into high-quality jet fuel, diesel, and lubricating oil base materials that are urgently needed by the market. As well as chemical naphtha and tail oil steam cracking raw materials for ethylene production, it has become one of the most important heavy oil deep processing processes in modern oil refining and petrochemical industries, and has been increasingly widely used at home and abroad. With the reduction of demand in my country's current diesel market, reducing di...

Claims

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Application Information

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IPC IPC(8): C10G65/12
CPCC10G65/12C10G2400/04
Inventor 崔哲王仲义曹正凯彭冲孙士可
Owner CHINA PETROLEUM & CHEM CORP
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