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Diesel oil and method for producing diesel oil

A technology for diesel oil and low-quality feedstock oil, applied in the petroleum industry, processing hydrocarbon oil, liquid carbon-containing fuel, etc., can solve the problems of small density reduction, high sulfur content, small cetane number increase, etc., and achieve the cost of transformation Low height, improved switching operation, and easy operation

Active Publication Date: 2016-04-27
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, from the results disclosed in its examples, this method has the disadvantages of small density reduction, high sulfur content, small increase in cetane number, low diesel yield, etc. Diesel products are difficult to meet the National IV and National V clean diesel standards

Method used

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  • Diesel oil and method for producing diesel oil
  • Diesel oil and method for producing diesel oil
  • Diesel oil and method for producing diesel oil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0063] The raw material used in this example is coked diesel oil A, and its properties are shown in Table 1. This embodiment adopts as figure 1 The process flow shown is carried out, specifically:

[0064] The raw material A is boosted by the raw material pump, mixed with hydrogen, and then enters the first hydrogenation reaction zone 1 after heat exchange and heating furnace preheating, and is contacted with the hydrogenation refining catalyst RS-1000 under the reaction conditions shown in Table 2. Hydrofining reaction; the reaction effluent directly enters the second hydrogenation reaction zone 2 without separation and reacts with the hydrogenation upgrading catalyst RIC-2 to increase the cetane number of diesel oil; the reaction products enter the separation system 3 and fractionation in turn System 4, cutting out gas products, naphtha products, low freezing point diesel fractions and high freezing point diesel fractions; the high freezing point diesel fractions are mixed ...

Embodiment 2

[0092] Table 6

Embodiment 3

[0105] Table 8

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Abstract

The invention discloses a method for producing diesel oil. The method comprises that in the presence of hydrogen, inferior crude oil orderly contacts with a hydrofining catalyst and a hydro-upgrading catalyst, and the materials obtained through contact are separated and then the separated materials are fractionated so that a low-condensation point diesel oil fraction and a high-condensation point diesel oil fraction are obtained, wherein the inferior crude oil contains a pour-point depressant material and the pour-point depressant material is obtained through contact between a high-condensation point diesel oil fraction-containing material to be subjected to pour point depressing and a pour point depressing catalyst. The invention also discloses diesel oil produced through the method. The method can realize high-yield low-cost preparation of low-condensation point high-cetane number diesel oil from inferior crude oil. The diesel oil obtained through the production method has lower sulfur content and nitrogen content. The method has the advantages of operation simpleness and switching agility.

Description

technical field [0001] The invention relates to a method for producing diesel oil and a diesel oil. Background technique [0002] With the continuous and rapid development of my country's national economy and the improvement of people's living standards, the demand for vehicle fuel continues to increase, especially in the northern market in winter, the demand for low-condensation diesel is growing rapidly. On the other hand, with the continuous acceleration of diesel quality upgrades, the quality requirements of diesel products are becoming more and more stringent. In addition to special requirements on freezing point and cold filter point, low-condensation diesel has strict requirements on sulfur content, polycyclic aromatic hydrocarbon content, sixteen There are also strict requirements for alkane number, etc. [0003] Most of the domestic crude oil in northern my country is paraffin-based or wax-containing intermediate base, and the diesel products produced by it have a ...

Claims

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Application Information

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IPC IPC(8): C10G67/02C10L1/04
Inventor 任亮蒋东红张毓莹梁家林胡志海王子文董松涛
Owner CHINA PETROLEUM & CHEM CORP
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