William S Stevens

US Patent:

47170824, Jan 5, 1988

Filed:

Oct 24, 1985

Appl. No.:

6/544806

Inventors:

Paul V. Guido - Cedar Grove NJ
Chester J. Romanowski - Carteret NJ
William D. Stevens - North Caldwell NJ

Assignee:

Foster Wheeler Energy Corporation - Clinton NJ

International Classification:

B02C 1504

US Classification:

241121

Abstract:

A fixed roller pulverizing mill wherein there is comparatively little wear, vibration or other adverse characteristics and wherein a uniform fineness of the ground material is maintained. The rollers, which do not move substantially in a horizontal direction, bear down on a rotating table, contacting the table at a circular trough therein and are individual spring biased to improve the performance of the mill.

US Patent:

41459970, Mar 27, 1979

Filed:

Dec 21, 1977

Appl. No.:

5/862786

Inventors:

William D. Stevens - North Caldwell NJ
Clarence C. Eich - Mountain Lakes NJ
Harry H. Pratt - West Orange NJ

Assignee:

Foster Wheeler Energy Corporation - Livingston NJ

International Classification:

F22B 3724
F22B 3736

US Classification:

122494

Abstract:

A furnace enclosure is provided in which one wall includes tubes of different passes which are free to move longitudinally relative to each other. A seal plate and filler means are disposed outside of the enclosure to provide for gas-tightness.

US Patent:

39540871, May 4, 1976

Filed:

Dec 16, 1974

Appl. No.:

5/533389

Inventors:

William D. Stevens - North Caldwell NJ
Walter P. Gorzegno - Morristown NJ

Assignee:

Foster Wheeler Energy Corporation - Livingston NJ

International Classification:

F22B 2912

US Classification:

122406S

Abstract:

A vapor generating system for use in a power plant having a steam turbine and a condenser connected in a series flow relationship, in which a vapor generating section receives a heat exchange fluid and passes the fluid in a heat exchange relation to a source of heat to raise the temperature and pressure of the fluid to predetermined values, with a plurality of separators being in the main flow path in fluid flow communication with the tubes of the vapor generating section for receiving the fluid and separating the fluid into a liquid and a vapor. The separators are connected to a vapor circuit and to a liquid circuit for passing the vapor and liquid to the turbine and condenser, respectively. A method of starting up a vapor generating system in a power plant.

US Patent:

39721930, Aug 3, 1976

Filed:

Jan 2, 1975

Appl. No.:

5/538236

Inventors:

William D. Stevens - North Caldwell NJ
Walter P. Gorzegno - Morristown NJ

Assignee:

Foster Wheeler Energy Corporation - Livingston NJ

International Classification:

F01K 314

US Classification:

60646

Abstract:

A vapor generating system for use in a power plant having a steam turbine and a condenser connected in a series flow relationship, in which a vapor generating section receives a heat exchange fluid and passes the fluid in a heat exchange relation to a source of heat to raise the temperature and pressure of the fluid to predetermined values. The vapor generating section operates at substantially constant pressure during start-up and a pressure reducing station is provided for reducing the pressure of the fluid before it is passed to a plurality of separators in the main flow path for receiving the fluid and separating the fluid into a liquid and a vapor. The separators are connected to a vapor circuit and to a liquid circuit for passing the vapor and liquid to the turbine and condenser, respectively. A method of starting up a vapor generating system in a power plant.

US Patent:

50691716, Dec 3, 1991

Filed:

Jun 12, 1990

Appl. No.:

7/537396

Inventors:

Arthur M. Hansen - East Hanover NJ
William D. Stevens - North Caldwell NJ
Justin P. Winkin - Annandale NJ

Assignee:

Foster Wheeler Agency Corporation - Clinton NJ

International Classification:

F22B 102

US Classification:

122 4D

Abstract:

A fluidized bed combustion system and method in which a recycle heat exchange section is located within an enclosure housing the furnace section of the combustion system. The flue gases and entrained solids from a fluidized bed in the furnace section are separated and the flue gases are passed to a heat recovery section and the separated particulate material to the heat exchange section. The heat exchange section includes a bypass chamber for permitting the separated solids to pass directly from the separator, via an outlet chamber, to the furnace section. A heat exchange chamber is provided in the recycle heat exchange section which receives the separated materials from the bypass chamber and transfers heat from the separated material to a fluid flow circuit for heating the fluid flow circuit and reducing the temperature of the separated material. The separated material in the heat exchange chamber is then passed back, via the outlet chamber, to the furnace section.

US Patent:

40993841, Jul 11, 1978

Filed:

Aug 10, 1976

Appl. No.:

5/713313

Inventors:

William D. Stevens - North Caldwell NJ
Walter P. Gorzegno - Morristown NJ

Assignee:

Foster Wheeler Energy Corporation - Livingston NJ

International Classification:

F01D 1900

US Classification:

60657

Abstract:

A vapor generating system for use in a power plant having a steam turbine and a condenser connected in a series flow relationship, in which a vapor generating section receives a heat exchange fluid and passes the fluid in a heat exchange relation to a source of heat to raise the temperature and pressure of the fluid to predetermined values. The vapor generating section operates at substantially constant pressure during start-up and a pressure control station is provided which includes one or more relatively small bore tubes, a first conduit having control means disposed therein, and a second conduit, through which fluid passes before it is passed to a plurality of separators in the main flow path which receives the fluid and separates same into a liquid and a vapor. The separators are connected to a vapor circuit and to a liquid circuit for passing the vapor and liquid to the turbine and heat recovery or condenser, respectively. A method of starting up a vapor generating system in a power plant.

US Patent:

43443885, Aug 17, 1982

Filed:

Dec 28, 1979

Appl. No.:

6/108054

Inventors:

William D. Stevens - North Caldwell NJ

Assignee:

Foster Wheeler Energy Corporation - Livingston NJ

International Classification:

F22B 2134

US Classification:

122235R

Abstract:

A vapor generating system in which a vapor generating section and a superheating section are connected in a series flow relationship. The vapor generating section includes an upright furnace section formed by a plurality of tubes, a portion of which extend at an angle with respect to the horizontal plane for passing fluid through the length of the furnace section to convert a portion of the fluid to vapor or to heat the fluid. The angularly extending portion of each tube has a rifled bore.

US Patent:

41812638, Jan 1, 1980

Filed:

Sep 20, 1978

Appl. No.:

5/944227

Inventors:

William D. Stevens - North Caldwell NJ

Assignee:

Foster Wheeler Energy Corporation - Livingston NJ

International Classification:

B02C 1706
B02C 1700

US Classification:

241 19

Abstract:

A method of pulverizing is provided which allows for blending different pulverized solids before passing the pulverized solids to points of use. The method steps of pulverizing a plurality of solids feedstocks in a plurality of pulverizing sections, mixing the pulverized solids, and regulating the rates at which the solids feedstocks are fed to respective pulverizing sections.