System, apparatus, and method for reducing moisture content of particulate material
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
F26B-017/12
출원번호
US-0031228
(1700-01-01)
국제출원번호
PCT/US01/18945
(2001-06-14)
발명자
/ 주소
Brown, Robert W.
Doub, Jr., John W.
출원인 / 주소
Novatec, Inc.
대리인 / 주소
Niles & Stockbridge P.C.
인용정보
피인용 횟수 :
3인용 특허 :
19
초록▼
A system for drying particulate material in a drying hopper (DH) has a plurality of gas flow paths, one (FP1) of which extends from a compressed gas inlet (16) to a first sub-system (SS1) that includes a membrane dryer(MD) and a heater (EH'), whereby dried and heated gas is supplied to a lower porti
A system for drying particulate material in a drying hopper (DH) has a plurality of gas flow paths, one (FP1) of which extends from a compressed gas inlet (16) to a first sub-system (SS1) that includes a membrane dryer(MD) and a heater (EH'), whereby dried and heated gas is supplied to a lower portion (36) of the hopper, and another (FP2) of which extends from the inlet (16) to a second sub-system (SS2) that includes a mixing device (30) and a heater (EH). The mixing device uses compressed gas to induce a flow of gas from the hopper and mixes the compressed gas with gas withdrawn from the hopper. The mixed gases are heated and supplied to a second portion (34) of the hopper.
대표청구항▼
1. A system for drying solid bulk material in a hopper, comprising: an inlet for compressed gas; a first sub-system, including a membrane dryer and a heater, connected to said inlet, the first sub-system supplying dried heated gas to a first portion of the hopper; and a second sub-system, inclu
1. A system for drying solid bulk material in a hopper, comprising: an inlet for compressed gas; a first sub-system, including a membrane dryer and a heater, connected to said inlet, the first sub-system supplying dried heated gas to a first portion of the hopper; and a second sub-system, including a mixing device connected to said inlet along a gas flow path that bypasses said membrane dryer, and a heater, the mixing device using gas from said inlet to induce the withdrawal of gas from the hopper and to mix the withdrawn gas with gas supplied from said inlet, and the mixed gases being heated and supplied to a second portion of the hopper. 2. A system according to claim 1, wherein the inlet is connected to a source of compressed gas. 3. A system according to claim 1, wherein the gas supplied to the first portion of the hopper is supplied via a first diffuser at a lower portion of the hopper, and the gas supplied to the second portion of the hopper is supplied via a second diffuser above the first diffuser. 4. A system according to claim 1, wherein the hopper is constructed to provide a flow of solid bulk material that enters the hopper from the top of the hopper and that exits the hopper from the bottom of the hopper. 5. A method of drying material in a chamber, that comprises: supplying a first portion of gas from a source of compressed gas to a membrane dryer; supplying gas dried by the membrane dryer, and heated, to a first portion of the chamber; supplying a second portion of gas from said source, independently of said membrane dryer, to a gas mixing device; withdrawing gas from the chamber and using the mixing device to mix the withdrawn gas with the second portion of gas; and supplying the mixed gases to a second portion of the chamber. 6. A method according to claim 5, wherein the chamber is a hopper through which material to be dried is passed, and the first portion of the chamber is below the second portion of the chamber. 7. A method according to claim 5, wherein the amount of gas withdrawn from the chamber is several times the amount of the second portion of gas supplied to the mixing device. 8. A method according to claim 5, wherein the mixing device uses the second portion of gas to induce the withdrawal of gas from the chamber. 9. A method according to claim 5, wherein the amount of mixed gases supplied to the second portion of the chamber is several times the amount of gas supplied to the first portion of the chamber. 10. Apparatus for drying particulate material in a drying hopper, comprising: an inlet for receiving compressed air; a first flow path connected to the inlet, that includes a membrane dryer and that provides compressed air from the inlet to the membrane dryer; a first heater that receives and heats dried compressed air from the membrane dryer; a first diffuser in the hopper that receives dried heated air from the first heater; a second flow path connected to the inlet separately from the membrane dryer and that provides compressed air from the inlet to a mixing device that withdraws air from an upper portion of the hopper and mixes the compressed air provided to the mixing device with air withdrawn from the hopper; a second heater that receives and heats the mixed air from the mixing device; and a second diffuser in the hopper, above the first diffuser, that receives heated mixed air from the second heater.
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이 특허에 인용된 특허 (19)
Larsen Poul (Elsinore DKX) Jochumsen Hans B. (Frederikssund DKX), Apparatus for dissicant drying and conveying of a granulate and a valve means preferably for use with said apparatus.
Weber Heinrich (Recklinghausen DEX) Lorenz Kurt (Hattingen DEX) Dungs Horst (Herne DEX) Kurtz Roman (Frechen DEX) Kersting Hans-Joachim (Frechen DEX), Apparatus for producing abrasion resistant coke from brown coal briquets.
Brockmann Thomas J. (Kirkwood MO) Rice Arthur W. (O\Fallon MO), Pressure control for improved gas dehydration in systems which employ membrane dryers in intermittent service.
Fu Ya-ming (Hsinchu TWX) Perng Jyi-Ching (Hsinchu TWX) Hwong Chen-Une (Hsinchu TWX) Fang Liang-Jyi (Hsinchu TWX), Process and an apparatus for producing teas.
Fu Ya-ming (Hsinchu TWX) Perng Jyi-Ching (Hsinchu TWX) Hwong Chen-Une (Hsinchu TWX) Fang Liang-Jyi (Hsinchu TWX), Process and an apparatus for producing teas.
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