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Refining Process Services, Inc. provides technical training seminars in the field of petroleum refining, also called oil refining. The modern petroleum refinery has a series of core process units that create clean gasoline and low sulfur diesel fuel. The first oil refinery unit is crude oil desalting. The desalter removes salt, water and other contaminants from crude oil prior to distillation in an atmospheric tower. The fractions recovered from the atmospheric distillation tower include naphtha, kerosene, diesel and bottoms liquid called atmospheric resid. This material is fractionated via vacuum distillation into gas oil and vacuum resid.


Raw gasoline recovered from petroleum consists of light naphtha and heavy naphtha. Light naphtha is processed through an isomerization unit and heavy naphtha is processed in a catalytic reforming unit or reformer so that gasoline octane is improved. Kerosene is blended into jet fuel. Diesel fuel is treated in a hydrotreating unit or hydrotreater with catalyst and hydrogen to reduce sulfur level and improve quality. Gas oil is converted in fluid catalytic cracking and hydrocracking units or hydrocracker into gasoline and diesel. Light olefins from the fluid catalytic cracker are processed in either HF acid (hydrofluoric acid) or sulfuric acid alkylation units. Vacuum resid is processed in delayed coking units which convert heavy oil from crude into lighter products.


To learn more about this vital industry, Refining Process Services offers a series of technical training seminars. All programs are offered in the form of public seminars.   Most programs are also offered for in-house presentation at a client location.  Select theOn-Site Training tab for  more information.  A listing of core seminars is provided below. For further information click on the seminar title below:


In order to increase the value of refinery products derived from the bottom of the crude oil barrel, many refiners are introducing delayed coking into their processing configuration. This program has been developed by Refining Process Services to provide an in-depth discussion of the process fundamentals and mechanical systems associated with the operation of a delayed coking unit. The information presented ranges from a description of heavy oil chemistry through a discussion of the current trends driving delayed coker revamps and re-configuration of refinery heavy oil processing schemes.

The program will be presented by Mr. Jerome DeHey of I Cubed Energy Consulting. The presentation has been designed for those professionals who are interested in the operation , process engineering, technical support or design of a delayed coking unit. This information will also be very useful to those responsible for refining coordination and research & development, and to those who supply products and services to the petroleum refining industry.




1. Process Background

  • History
  • Typical Flow Plan Yields
  • Comparison with Fluid Coking

2. Heavy Oil Chemistry

  • Composition of Heavy Oils
  • Thermal Cracking Reactions
  • Compatibility

3. Coker Feed Systems

  • Crude/Coker Interactions
  • Tankage Considerations
  • Non-Conventional Feeds
  • Coker Preheat Options

4. Coker Preheat Furnace

  • Past Design / Current Design Strategies
  • Effect of Geometry on Run Length
  • Effect of Feed Properties on Run Length
  • Effect of Contaminants on Run Length
  • Effect of Operating Conditions on Run Length
  • Decoking Options


5. Coker Drum Operations

  • Mechanical Details
  • Dynamic Coking Model
  • Foam Formation / Use of Anti-Foam
  • Overhead Line Quenching Options
  • Pressure Relief Systems

6. Coker Process Variable Effect

  • Key Operating Variables
  • Key Feedstock Parameters
  • Effect on Product Yields
  • Effect on Product Qualities
  • Upgrading/Processing Options for Coker Products 

7. Petroleum Coke Quality Issues

  • Types of Petroleum Coke
  • Dispositions for Petroleum Coke
  • Current Market Trends
  • Feedstock Effect on Coke Quality
  • Operating Variable Effects
  • Coke Calcining Operations

8. Decoking Operations

  • Sequence of Events
  • Blowdown Systems
  • Automatic Deheading Devices
  • Details of Coke Cutting System
  • Options for Green Coke Handling
  • Coke Dewatering/Cutting Water Systems
  • Heatup Condensate Processing Options


9. Fractionator And Gas Plant Operations

  • Gas Oil Wash Zone Options
  • Heat Removal Options
  • Naphtha End Point Control During Switches
  • Lean Oil/Sponge Oil Options

10. Commercial Considerations For Delayed Coking

  • Troubleshooting of Delayed Cokers
  • Optimization of Delayed Coking Systems
  • Debottlenecking Options
  • Unit Monitoring and Test Runs
  • Process Economics

11. Trends In Delayed Coking

  • Cogeneration
  • Low Pressure/Ultra-Low Recycle Coking
  • Strategies for Improved Furnace Run Length
  • Strategies for Shortening Decoking Cycle
  • Refinery Sludge and Slop Oil Disposition



Jerome K. DeHey is a principal in I Cubed Energy Consulting, and the founder of JD Engineering and Associates. He is involved in consulting in all areas of heavy oil and residua processing, primarily delayed and fluid coking. Prior to joining I Cubed Energy Consulting, Jerry was employed with Solomon Associates, KBC Advanced Technologies, and Exxon Research and Engineering, working in the areas of coking, hydroconversion, and hydrotreating process development and technical support. He holds a M.S. degree in Chemical Engineering from the University of Texas, and is a licensed professional engineer.

Calendar of Seminars

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11/09/2021 - 11/12/2021
Crude Oil Distillation
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