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A process for converting catalytic cracking light cycle oil into jet fuel

A process method, light cycle oil technology, applied in chemical instruments and methods, petroleum industry, molecular sieve catalysts, etc., can solve the problems of low utilization value of catalytic cracking light cycle oil, etc.

Active Publication Date: 2020-10-27
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] To solve the problem of low utilization value of catalytic cracking light cycle oil in the prior art, the present invention provides a process for converting catalytic cracking light cycle oil into jet fuel. Preparation of Jet Fuel After Contacting a Bimetallic Hydrogenation Saturation Catalyst

Method used

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  • A process for converting catalytic cracking light cycle oil into jet fuel
  • A process for converting catalytic cracking light cycle oil into jet fuel
  • A process for converting catalytic cracking light cycle oil into jet fuel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] In the first step, the catalytic cracking light cycle oil (Shengli Oilfield LCO) is subjected to desulfurization and denitrification refining treatment: the composition of the catalyst is shown in Table 1, and the catalyst is prepared by a conventional method; the refining treatment conditions are: temperature 360 ​​° C, reaction pressure 6.5MPa, liquid hour volume space velocity 3.0h -1 . The contents of sulfur and nitrogen in raw materials before and after refining are shown in Table 2.

[0049] Table 1.

[0050]

[0051] Table 2.

[0052]

[0053] In the second step, the bimetallic hydrogenation saturated catalyst is subjected to drying and acid protection reduction treatment:

[0054] The bimetallic hydrogenation saturated catalyst is prepared through the following steps:

[0055] (1) Preparation of modified NaY zeolite: place 100 grams of industrially produced NaY zeolite in 150 g (NH 4 ) 2 SO 4 Stir in the aqueous solution, raise the temperature to 90...

Embodiment 2

[0067] With the same method as in Example 1, only when the catalyst is subjected to acid protection and reduction treatment, the hydrogen chloride content in the hydrogen for reduction is changed to 10.74 μ L / L, hydrogen chloride accounts for 2m% of the theoretical total water in the system, and other operations are the same as in the embodiment 1.

Embodiment 3

[0069] With the method identical with embodiment 1, just when carrying out acid protection reduction treatment to catalyzer, change hydrogen chloride content into 16.124 μ L / L in the reducing hydrogen, hydrogen chloride accounts for 3m% of theoretical total water in the system; Other operation is the same as embodiment 1.

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Abstract

A process for converting catalytic cracking light cycle oil into jet fuel achieves the preparation of the jet fuel by carrying out a contact reaction between a bimetallic hydrostturation catalyst subjected to drying, drying, acid-protection reduction treatment, ammonia passivation and pre-vulcanization treatment and the catalytic cracking light cycle oil subjected to desulfurization and denitrification refining. In the process disclosed by the invention, the catalyst used is co-supported on modified NaY zeolite and modified alumina, and subjected to the acid-protection reduction treatment, allowing for a reduction in the aggregation risk of noble metal grains, so that the metal elements in the catalyst are distributed more uniformly and the catalyst has better catalytic activity; also, thesteps of low-oxygen nitrogen drying and oxygen-rich nitrogen drying in the traditional process are omitted, thus reducing equipment investment outlay and saving operating cost; and the product jet fuel which is more valuable than diesel can be produced by a relatively simple process.

Description

technical field [0001] The invention relates to a process method for converting catalytic cracking light cycle oil into jet fuel, and belongs to the technical field of hydrogenation. Background technique [0002] With the increase in the throughput of various secondary processing processes, especially the wide application of catalytic cracking technology, the proportion of raw material blended residual oil or heavy oil has been increasing, resulting in a large amount of catalytic cracking light cycle oil LCO with high aromatic content. In the prior art, these LCOs are usually converted into diesel oil. For example, CN1156752A discloses a diesel oil hydrogenation conversion method. Hydrogen and the hydrogen from the circulating hydrogen compressor are mixed, heated to the temperature required for the reaction, and then enter the reactor equipped with a hydrorefining catalyst and a hydroconversion catalyst containing molecular sieves, and maintain a certain N+αNH 3 Under the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G69/04B01J29/14B01J29/16
CPCB01J29/146B01J29/166B01J2229/18C10G69/04C10G2300/202
Inventor 贝耀明柳伟秦波杜艳泽
Owner CHINA PETROLEUM & CHEM CORP