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A RESIDUE UPGRADING OPTION LEADING TO HIGH VALUE CHEMICAL FEEDSTOCK

IP.com Disclosure Number: IPCOM000217536D
Publication Date: 2012-May-08

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Page 01 of 16

 A RESIDUE UPGRADING OPTION LEADING TO
HIGHVALUE CHEMICAL FEEDSTOCK

Pankaj Shah

 Technology Manager Resid UpgradingTeam

And

Jon Moretta

 Technology Director Resid UpgradingTeam

Kellogg Brown and Root, Inc.

USA

KBR Paper No.1626

IBC Conferenceon Integrating Refinery and PetrochemicalsPlant, March 1999.


Page 02 of 16

 A RESIDUE UPGRADING OPTION LEADING TO
HIGH VALUE CHEMICAL FEEDSTOCK

ABSTRACT

Changing patterns of product demand and tighter environmental regulations are forcing refiners around the world to reduce the heavy fuel oil production in the refineries.

This paper describes a low cost residue upgrading scheme involving the ROSEm (Residium Oil Supercritical Extraction) solvent deasphalting process. Gasification of low value asphaltenes from the ROSE unit produces high value syngas and eliminates the production of fuel oil from the refinery. Syngas can be used as a feedstock for the production of a wide variety of chemicals as well as fuel for combustion turbine to generate power.

The ROSE solvent deasphalting based gasification scheme is comparedto other. refinery bottoms processing schemes to evaluate the most economicaloption that meets the objective of reducing the high sulfur fuel oil in the refinery in an environmentally acceptable manner. The eventual choice betweenvarious upgrading schemes is dependent on site specific conditions.

Commercialization of recent gasification projects has reduced the capital cost of gasification significantly. However, the key to the application of this technology is the availability of low value feedstock, potential for upgrading syngas to higher value products, and the capability to cogenerate steam, hydrogen, and power. The future of gasification in refining and petrochemical complexes is very optimistic in the long term. Environmental regulations will provide the economic incentive to gasify the bottom of the barrel.

KBR Paper No. 1626

IBC Conference onIntegrating Refinery and PetrochemicalsPlant, March 1999.


Page 03 of 16

A Residue Upgrading Option Leadingto High Value Chemical Feedstock

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INTRODUCTION

Fuel refineries aroundthe world have changed substantially during the past two decades primarily due to changing crude oil supply, varying product patterns, and environmental regulations. The increasingly severe restrictions on the levels of sulfur emissions from the combustionof heavy fuels has led to decreased demand for residual fuel oil products. Additionally, the increased availability and use of natural gas as fuel for power plants has compounded the decreased demand for fuel oil. Figure 1shows the total world demand growthfor crude and petroleum products from 1999to 2001. The increased demand for the transportation fuels vis-a-vis residual fuel oil has resulted in an imbalance in the demand and supply of refinery products creating a surplus of low priced and low quality heavy residues.

These changes are happeningat a time when the industry is facing poor operating margins and intens...