David Melvin Nester

US Patent:

6368028, Apr 9, 2002

Filed:

Jan 29, 2000

Appl. No.:

09/493420

Inventors:

David Melvin Nester - Baton Rouge LA

Assignee:

ExxonMobil Chemical Patents Inc. - Houston TX

International Classification:

B65G 5340

US Classification:

406109, 406 94, 406168, 406194

Abstract:

A gas conveying system capable of conveying a solids material without pushing or compressing the solids material. The system comprising: at least one conduit assembly comprising a conduit, a lance assembly disposed about a first end of the conduit which is capable of removing the solids material from a holding device, and a first eductor which is capable of entraining the solids material in a gas stream and moving the solids material through the conduit; a cyclone disposed about a second end of the conduit, the cyclone being capable of separating the solids material from the gas stream; and a second eductor disposed to receive the solids material from the cyclone, the second eductor being capable of entraining the solids material in a second gas stream which has a solid-material-to-gas mass ratio which is greater than that of the first eductor. The second stage eductor transports the particles further downstream for storage, additional transport or for further treatment, such as burning in an incinerator.

US Patent:

60364076, Mar 14, 2000

Filed:

Sep 3, 1997

Appl. No.:

8/922540

Inventors:

David Melvin Nester - Baton Rouge LA

Assignee:

Exxon Chemical Patents Inc. - Houston TX

International Classification:

B65G 5340

US Classification:

406109

Abstract:

A gas conveying system capable of conveying a solid material without pushing or compressing the solid material. The system comprising: at least one conduit assembly comprising a conduit, a lance assembly disposed about a first end of the conduit which is capable of removing the solid material from a holding device, and a first eductor which is capable of entraining the solid material in a gas stream and moving the solid material through the conduit; a cyclone disposed about a second end of the conduit, the cyclone being capable of separating the solid material from the gas stream; and a second eductor disposed to receive the solid material from the cyclone, the second eductor being capable of entraining the solid material in a second gas stream which has a solid-material-to gas mass ratio which is greater than that of the first eductor. The second stage eductor transports the particles further downstream for storage, additional transport, or for further treatment, such as burning in an incinerator.