Joseph S Mei

US Patent:

44758847, Oct 9, 1984

Filed:

Nov 30, 1982

Appl. No.:

6/445598

Inventors:

Jer-Yu Shang - Fairfax VA
Joseph S. Mei - Morgantown WV
John S. Wilson - Morgantown WV

Assignee:

The United States of America as represented by the United States
_Department of Energy - Washington DC

International Classification:

F23D 1900

US Classification:

431170

Abstract:

The present invention is directed to a fluidized-bed combustion apparatus provided with a U-shaped combustion zone. A cyclone is disposed in the combustion zone for recycling solid particulate material. The combustion zone configuration and the recycling feature provide relatively long residence times and low freeboard heights to maximize combustion of combustible material, reduce nitrogen oxides, and enhance sulfur oxide reduction.

US Patent:

51980029, Mar 30, 1993

Filed:

Mar 12, 1992

Appl. No.:

7/850478

Inventors:

Joseph S. Mei - Morgantown WV
James DeVault - Fairmont WV
John S. Halow - Waynesburg PA

Assignee:

The United States of America as represented by the United States
Department of Energy - Washington DC

International Classification:

B01D 5306

US Classification:

55 77

Abstract:

A gas cleaning filter is formed in-situ within a vessel containing a fluidizable bed of granular material of a relatively large size fraction. A filter membrane provided by a porous metal or ceramic body or such a body supported a perforated screen on one side thereof is coated in-situ with a layer of the granular material from the fluidized bed by serially passing a bed-fluidizing gas stream through the bed of granular material and the membrane. The layer of granular material provides the filtering medium for the combined membrane-granular layer filter. The filter is not blinded by the granular material and provides for the removal of virtually all of the particulates from a process gas stream. The granular material can be at least partially provided by a material capable of chemically reacting with and removing sulfur compounds from the process gas stream. Low level radioactive waste containing organic material may be incinerated in a fluidized bed in communication with the described filter for removing particulates from the gaseous combustion products.

US Patent:

44663609, Aug 21, 1984

Filed:

Dec 14, 1982

Appl. No.:

6/449793

Inventors:

Jer-Yu Shang - Fairfax VA
Joseph S. Mei - Morgantown WV
Frank D. Slagle - Kingwood WV
John E. Notestein - Morgantown WV

Assignee:

The United States of America as represented by the United States
Department of Energy - Washington DC

International Classification:

F23D 102

US Classification:

110264

Abstract:

The present invention is directed to a combustion apparatus in the configuration of a oblong annulus defining a closed loop. Particulate coal together with a sulfur sorbent such as sulfur or dolomite is introduced into the closed loop, ignited, and propelled at a high rate of speed around the loop. Flue gas is withdrawn from a location in the closed loop in close proximity to an area in the loop where centrifugal force imposed upon the larger particulate material maintains these particulates at a location spaced from the flue gas outlet. Only flue gas and smaller particulates resulting from the combustion and innerparticle grinding are discharged from the combustor. This structural arrangement provides increased combustion efficiency due to the essentially complete combustion of the coal particulates as well as increased sulfur absorption due to the innerparticle grinding of the sorbent which provides greater particle surface area.

US Patent:

44472978, May 8, 1984

Filed:

Apr 14, 1982

Appl. No.:

6/368197

Inventors:

Jer-Yu Shang - Fairfax VA
John E. Notestein - Morgantown WV
Joseph S. Mei - Morgantown WV
Li-Wen Zeng - Morgantown WV

Assignee:

The United States of America as represented by the United States
Department of Energy - Washington DC

International Classification:

C10B 106
C10B 4910
C10B 4922

US Classification:

202 99

Abstract:

The present invention is directed to a combined fluidized bed retorting and combustion system particularly useful for extracting energy values from oil shale. The oil-shale retort and combustor are disposed side-by-side and in registry with one another through passageways in a partition therebetween. The passageways in the partition are submerged below the top of the respective fluid beds to preclude admixing or the product gases from the two chambers. The solid oil shale or bed material is transported through the chambers by inclining or slanting the fluidizing medium distributor so that the solid bed material, when fluidized, moves in the direction of the downward slope of the distributor.

US Patent:

53257979, Jul 5, 1994

Filed:

Aug 18, 1993

Appl. No.:

8/108501

Inventors:

Joseph S. Mei - Morgantown WV
John S. Halow - Waynesburg PA

Assignee:

The United States of America as represented by the United States
Department of Energy - Washington DC

International Classification:

F23G 500

US Classification:

110245

Abstract:

A staged fluidized-bed combustion and filter system for substantially reducing the quantity of waste through the complete combustion into ash-type solids and gaseous products. The device has two fluidized-bed portions, the first primarily as a combustor/pyrolyzer bed, and the second as a combustor/filter bed. The two portions each have internal baffles to define stages so that material moving therein as fluidized beds travel in an extended route through those stages. Fluidization and movement is achieved by the introduction of gases into each stage through a directional nozzle. Gases produced in the combustor/pyrolyzer bed are permitted to travel into corresponding stages of the combustor/filter bed through screen filters that permit gas flow but inhibit solids flow. Any catalyst used in the combustor/filter bed is recycled. The two beds share a common wall to minimize total volume of the system.

US Patent:

43734545, Feb 15, 1983

Filed:

Aug 28, 1981

Appl. No.:

6/297307

Inventors:

Augustine A. Pitrolo - Fairmont WV
Joseph S. Mei - Morgantown WV
Jerry Y. Shang - Fairfax VA

Assignee:

The United States of America as represented by the Department of Energy - Washington DC

International Classification:

F23B 106
F23B 138
F23B 502
F23D 102

US Classification:

110347

Abstract:

The present invention is directed to the extraction of energy values from l shale containing considerable concentrations of calcium carbonate in an efficient manner. The volatiles are separated from the oil shale in a retorting zone of a fluidized bed where the temperature and the concentration of oxygen are maintained at sufficiently low levels so that the volatiles are extracted from the oil shale with minimal combustion of the volatiles and with minimal calcination of the calcium carbonate. These gaseous volatiles and the calcium carbonate flow from the retorting zone into a freeboard combustion zone where the volatiles are burned in the presence of excess air. In this zone the calcination of the calcium carbonate occurs but at the expense of less BTU's than would be required by the calcination reaction in the event both the retorting and combustion steps took place simultaneously. The heat values in the products of combustion are satisfactorily recovered in a suitable heat exchange system.