Douglas R Bull

Title: Douglas R Bull: Innovator in Gasification Technology

Introduction

Douglas R Bull is a prominent inventor based in Vancouver, Canada. He has made significant contributions to the field of gasification technology, particularly in the gasification of biosolids. With a total of 4 patents to his name, Bull's work focuses on improving the efficiency and effectiveness of biogasification processes.

Latest Patents

One of Bull's latest patents is a gasification reactor with a pipe distributor. This large-scale fluidized bed biogasifier is designed for gasifying biosolids. The biogasifier features a reactor vessel equipped with a pipe distributor and multiple fuel feed inlets. It allows for the feeding of biosolids at a desired fuel feed rate exceeding 40 tons per day, with an average of about 100 tons per day during steady-state operation. The fluidized bed in the reactor vessel has a cross-sectional area proportional to the targeted fuel feed rate, ensuring a superficial gas velocity between 0.1 m/s (0.33 ft/s) and 3 m/s (9.84 ft/s). In operation, biosolids are heated within the reactor to temperatures ranging from 900°F (482.2°C) to 1600°F (871.1°C).

Another notable patent is for a gasification reactor with a discrete reactor vessel and grate. This fluidized bed biogasifier also focuses on gasifying biosolids. It includes a reactor vessel and a feeder for introducing biosolids at a desired feed rate. The fluidized bed in this reactor is designed similarly, maintaining a superficial gas velocity between 0.1 m/s (0.33 ft/s) and 3 m/s (9.84 ft/s). The method involves feeding biosolids into the reactor and applying oxidant gases to produce a superficial velocity of producer gas within the same range. The biosolids are heated in an oxygen-starved environment, achieving temperatures between 900°F (482.2°C) and 1700°F (926.7°C) to facilitate gasification.

Career Highlights

Throughout his career, Douglas R Bull has worked with several companies, including Aries Gasification, LLC and Phg Energy, LLC. His expertise in gasification technology has positioned him as a key player in the development of innovative solutions for biosolid management.

Collaborations