Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method for producing cleaning diesel oil from coal directly liquidized oil

A coal direct liquefied oil and biodiesel technology, which is applied in the preparation of liquid hydrocarbon mixtures and the petroleum industry, can solve the problems of not being able to produce diesel oil, and achieve the effect of easing process conditions, high yield, and meeting energy needs

Active Publication Date: 2008-03-19
CHNA ENERGY INVESTMENT CORP LTD +1
View PDF0 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is still impossible to produce diesel that meets the standards above Euro II

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] This example illustrates that the properties of the produced diesel products meet the requirements of Euro III emission diesel standards by using straight-run diesel oil and directly liquefied diesel oil from coal after hydrotreating and upgrading as raw materials.

[0026]The main test steps are briefly described as follows: a medium-sized hydrocracking test unit with a catalyst loading capacity of 3 liters was used to hydrotreat coal direct liquefaction oil. Both the hydrorefining catalyst RN-10 and the hydrocracking catalyst RT-5 were produced by Sinopec Changling Catalyst Factory. See Table 1 for the main hydro-upgrading process conditions, and see Table 1a for the main physicochemical properties of the coal direct liquefaction oil used. Distill the hydro-upgraded direct liquefied oil to obtain the upgraded diesel fraction (DDCL for short), whose physical and chemical properties are shown in Table 2. Under normal temperature and pressure, DDCL and straight-run dies...

Embodiment 2

[0029] This example shows that: using hydrocracked diesel oil in refineries and coal direct liquefied diesel oil after hydro-upgrading as raw materials, the properties of the produced diesel products meet the requirements of Euro III diesel emission standards.

[0030] The main test steps are briefly described as follows: The hydrocracked diesel produced by a domestic company (see Table 2 for properties) and the modified coal direct liquefied diesel fraction in Example 1 were used for the test. The biodiesel components shown in Table 3 were used as lubricity improvers for hydrocracked diesel. The mixing ratio of the above three diesel fractions is DDCL: hydrocracked diesel oil: biodiesel = 68:30:2, and the properties of the diesel product obtained after mixing are shown in Table 4.

[0031] It can be seen from Table 4 that all properties of diesel products meet the requirements of Euro III diesel emission standards, and its density, viscosity, cetane number, sulfur content and...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
Bronsted acidityaaaaaaaaaa
diameteraaaaaaaaaa
densityaaaaaaaaaa
Login to View More

Abstract

A method for producing clean diesel oil from direct coal liquefied oil, which involves hydrogenating and upgrading the direct coal liquefied oil, and distilling the obtained product to obtain a hydrogenated and upgraded diesel fraction; The degraded diesel fraction is mixed with conventional diesel with a sulfur content of less than 350ppm, a cetane number of more than 60, a lubricity indicator wear scar diameter of less than 610μm, an acidity of less than 4.0mgKOH/100ml, and a polycyclic aromatic hydrocarbon content of less than 15%. to produce the clean diesel product; wherein, the conventional diesel accounts for 15-95% (v/v) of the clean diesel product. Tests have proved that the quality of the diesel products produced by the invention can meet the requirements of Euro II or Euro III emission standards.

Description

technical field [0001] The present invention relates to a method for producing clean diesel oil from coal direct liquefaction oil, more specifically, a method for producing clean diesel oil by using hydrogenated and upgraded coal direct liquefaction diesel fraction (hereinafter referred to as DDCL) and conventional diesel fraction as raw materials Methods. Background technique [0002] Diesel engines have the characteristics of high power and low energy costs, and are mainly used in heavy-duty vehicles, construction machinery, ships, and power generation equipment. With the rapid development of diesel engine technology, the emission of diesel engines can meet the same clean standards as gasoline engines. Therefore, in developed countries, some gasoline engines have been replaced by diesel engines. According to EU statistics, the market share of diesel cars in major EU countries has grown rapidly from 16% in 1991 to 44% in 2003. In 2003, the sales of diesel cars in Germany ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C10G1/06
Inventor 石玉林门卓武马辉金嘉璐袁明
Owner CHNA ENERGY INVESTMENT CORP LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com