The Multi-Solid Fluidized bed reactor system uses 2-stages to gasify coal at high throughputs to produce a range of products in compact reactors without requiring an oxygen plant. Data generated on the process has shown that approximately 20% by weight of the incoming coal can be converted to liquid products and an additional 20% to a fuel gas with a heating value in the range of 600 Btu/SCF. The remainder of the coal is converted to a char coproduct that, if desired, can be used within the process to generate steam or be removed from the system as a product. The relative amounts of these coproducts can be adjusted by changing process operating conditions. Sulfur in the coal exits the process primarily in the fuel gas. The fuel gas accounts for about 85% of the coal sulfur with another 10% contained in the liquid products. The circulating medium in the MSFB process also provides unique potential for the process. By using catalytically active materials, the chemical composition of the liquids or gases produced can be potentially altered to minimize the amount of upgrading necessary. Chemically active circulating materials such as a sulfur scavenger to reduce or eliminate the requirement for sulfur removal from the products produced can also be used. The relatively high gas velocities in the gasification reactor provide turbulent mixing in the base of the reactor thus reducing ash agglomeration and coal swelling problems. As a result the system can accept a range of coal types. This report describes initial tests in an integrated gasification unit as well as examines a preliminary process conceptual design. 8 refs., 14 figs., 12 tabs.