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

Hydrotreated hydrocarbon tar, fuel oil composition, and process for making

a technology of hydrocarbon tar and hydrocarbon slag, which is applied in the direction of tar working up by chemical refining, thermal non-catalytic cracking, fuels, etc., can solve the problems of poor combustion quality, insoluble slag in steam cracker tar, and insoluble slag in many low-sulfur fuel oil formulations

Inactive Publication Date: 2014-06-26
EXXONMOBIL CHEM PAT INC
View PDF5 Cites 50 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present patent provides a hydrocarbon tar with a high percentage of aromatics, a fuel oil composition containing a blend of aromatics and non-aromatic hydrocarbons, and a process for making a hydrogenated tar. The technical effects of this patent include a hydrocarbon tar with a high degree of aromaticity, a fuel oil composition with improved properties, and a process for producing a high-quality tar.

Problems solved by technology

Steam cracker tars, the residuals from steam crackers, typically contain C10 to C75 aromatics and typically cannot be blended into low-sulfur fuel oils because the resulting fuel oils would not meet many of required product specifications.
Asphaltenes in steam cracker tars are not soluble in many low-sulfur fuel oil formulations.
Another specification not typically met is combustion quality, which is poor due to high aromaticity.

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

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Hydrotreated hydrocarbon tar, fuel oil composition, and process for making
  • Hydrotreated hydrocarbon tar, fuel oil composition, and process for making
  • Hydrotreated hydrocarbon tar, fuel oil composition, and process for making

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0044]Steam cracker tar at 1.1 g / cc and 2.2 wt % sulfur (S) was hydrotreated at 1000 psig (pounds per square inch gauge), 400° C., and 0.4 LHSV (liquid hourly headspace velocity) with 1400 SCFB (standard cubic feet per barrel) hydrogen cofeed. Hydrogen consumption was 1200 SCFB of feed, resulting in a composition with a density of 1.02 g / cc and 0.4 wt % S.

[0045]The resulting hydrotreated composition is a suitable as a fuel oil blending component. A 2D GC image of the composition is set forth in FIG. 1. In FIG. 1, the peaks for the aromatics increase in carbon number along the slope, with the peak for C20 situated generally in the middle along the slope. The generally linear line of peaks along the bottom of the image represent paraffin waxes, which make up 25-29 fraction of the hydrotreated composition. The C25-29 fraction was obtained via distillation in a spinning band distillation column.

[0046]The 500+ component hydroprocessed steam cracker tar of the present example is useful as...

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
boiling pointaaaaaaaaaa
densityaaaaaaaaaa
wt %aaaaaaaaaa
Login to View More

Abstract

Provided is a hydrocarbon tar. The tar has 75 wt % or more of aromatics of 10 carbons to 75 carbons based on the total weight of the tar. The aromatics exhibit 40% to 80% aromaticity. The tar has a boiling point of from 300° F. to 1350° F. There is also a fuel oil composition having the tar therein. There are also processes for making the hydrocarbon tar.

Description

CROSS-REFERENCE TO A RELATED APPLICATION[0001]The present application claims priority based on U.S. Ser. No. 61 / 745,670, filed on Dec. 24, 2012, which is incorporated herein by reference in its entirety.FIELD[0002]The present disclosure relates to a hydrotreated hydrocarbon tar. The present disclosure further relates to a fuel oil composition containing the hydrotreated tar. The present disclosure further relates to a process for making the fuel oil composition.BACKGROUND[0003]Conventionally, high-sulfur fuel oils, i.e., those having 1 wt % or more sulfur, have been employed in marine and shipping applications due to their relative availability and low cost. However, impending international regulatory changes mandate the use of fuel oils having lower sulfur content. Thus, there is a need for low-cost, low-sulfur fuel oils for marine and shipping applications.[0004]Low-sulfur fuel oils, i.e., fuel oils having less than 1.0 wt % sulfur, are currently produced from a wide variety of st...

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(United States)
IPC IPC(8): C10C1/20
CPCC10C1/205C10L2200/0438C10L2290/543C10L1/04C10L1/1616C10G45/44C10G69/06C10G9/36
Inventor BROWN, STEPHEN HAROLDWANG, FRANK CHENG-YUDAVIS, STEPHEN MARKYUNG, CATHLEEN
Owner EXXONMOBIL CHEM PAT INC
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