Dennis F Ogren

Title: Dennis F Ogren: Innovator in Coke Production and Gravity Settling Technologies

Introduction

Dennis F Ogren is a notable inventor based in Verona, NJ (US), recognized for his contributions to the fields of coke production and gravity settling technologies. With a total of 4 patents to his name, Ogren has made significant advancements that have impacted industrial processes.

Latest Patents

One of Ogren's latest patents focuses on coke production. This innovative process involves the delayed coking of a coking feedstock, where the feedstock is continuously heated in a coking heater and introduced into a coke drum. The heater operates to maintain a coke drum temperature between 415°C and 455°C. After filling the drum to the desired level, feedstock introduction is halted, and the contents are heated to a temperature of 450°C to 500°C. This heating temperature is at least 10°C greater than the coking temperature, achieved by passing a non-coking vapor through the drum's contents. This method effectively reduces the volatile combustible matter content to a value of 4% to 10% by weight, thereby lowering the CTE of the formed coke. The process is particularly applicable to the production of needle coke from various feedstocks, especially petroleum feedstock that has been thermally soaked in the presence of sulfur and subsequently thermally cracked to enhance aromaticity. Additionally, noncrystalline substances may be removed prior to coking to further optimize the process.

Another significant patent by Ogren involves a gravity settler. This device comprises a housing that encloses multiple conically shaped hollow members arranged in vertically spaced, horizontally disposed layers. Each layer contains several conical members, with adjacent layers creating separate gravity settling compartments. These compartments include feed inlets, overflow outlets for withdrawing clarified liquid, and underflow outlets for extracting liquid containing solids.

Career Highlights

Throughout his career, Dennis F Ogren has worked with prominent companies such as The Lummus Company and Lummus Crest, Inc. His experience in these organizations has contributed to his expertise in developing innovative technologies.

Collaborations

Ogren has collaborated with notable individuals in the industry, including Andre A Simone and William R Adams. These partnerships have likely fostered the exchange of ideas and advancements in their respective fields.

Conclusion

Dennis F Ogren's contributions to coke production