EP0471060A1 - Method and system for crushing and drying a solid fuel. - Google Patents
Method and system for crushing and drying a solid fuel.Info
- Publication number
- EP0471060A1 EP0471060A1 EP91905840A EP91905840A EP0471060A1 EP 0471060 A1 EP0471060 A1 EP 0471060A1 EP 91905840 A EP91905840 A EP 91905840A EP 91905840 A EP91905840 A EP 91905840A EP 0471060 A1 EP0471060 A1 EP 0471060A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- gas
- temperature
- flow rate
- drying
- fraction
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000001035 drying Methods 0.000 title claims abstract description 36
- 238000000034 method Methods 0.000 title claims abstract description 13
- 239000004449 solid propellant Substances 0.000 title description 2
- 239000000463 material Substances 0.000 claims abstract description 45
- 238000002347 injection Methods 0.000 claims description 13
- 239000007924 injection Substances 0.000 claims description 13
- 238000000227 grinding Methods 0.000 claims description 10
- 239000000203 mixture Substances 0.000 claims description 6
- 238000013459 approach Methods 0.000 claims description 4
- 239000007787 solid Substances 0.000 claims description 4
- 230000001419 dependent effect Effects 0.000 claims description 3
- 238000002485 combustion reaction Methods 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 34
- 239000003245 coal Substances 0.000 description 20
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 6
- 230000001105 regulatory effect Effects 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000011362 coarse particle Substances 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 239000002803 fossil fuel Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000011112 process operation Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23K—FEEDING FUEL TO COMBUSTION APPARATUS
- F23K1/00—Preparation of lump or pulverulent fuel in readiness for delivery to combustion apparatus
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2221/00—Pretreatment or prehandling
- F23N2221/08—Preheating the air
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2225/00—Measuring
- F23N2225/04—Measuring pressure
- F23N2225/06—Measuring pressure for determining flow
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2225/00—Measuring
- F23N2225/08—Measuring temperature
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2237/00—Controlling
- F23N2237/20—Controlling one or more bypass conduits
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2239/00—Fuels
- F23N2239/02—Solid fuels
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N5/00—Systems for controlling combustion
- F23N5/18—Systems for controlling combustion using detectors sensitive to rate of flow of air or fuel
Definitions
- the flow rate of the gas fraction Q ? supplying the pre-drying means being adjusted so that the total gas flow rate Q. in the transport pipes is between a minimum flow rate ⁇ Q. and a maximum flow rate Q. chorus.
- the adjustment is provided for a combustible material having the highest degree of humidity which can normally be used in the boiler considered.
- ⁇ transport piping is equal to or very little higher than minimum flow rate Q. as long as possible and then deviates from it if necessary by the smallest possible quantity. • J5 The yield obtained is also increased and moreover combustion takes place with a reduced formation of nitrogen oxides.
- 35 means for adjusting the gas temperature of the supply means in a given range, transport pipes supplied with the mixture of gas from the pre-drying means and gas with the ground material from the device, means for adjusting the first injection means for adjusting the flow rate Q- of the fraction of gas passing through the apparatus in proportion to the quantity of material to be ground, means for measuring the temperature T of the gas mixture of ground material in the transport pipes, means for adjusting the temperature of the gas of the means d supply as a function of the difference between a fixed temperature T- and the temperature T measured so that T approaches T, means for adjusting the second injection means so that the total gas flow Q. in the transport piping is between a minimum flow rate Q. and a
- the air flow Q- (line segment 0E, E being the abscissa point 100) passing through the mill is proportional to the coal flow.
- the flow Q. must be equal to or greater than a minimum flow Q. and not exceed a maximum flow Q.. Total flow Q. Am Am A
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Drying Of Solid Materials (AREA)
- Solid Fuels And Fuel-Associated Substances (AREA)
- Processing Of Solid Wastes (AREA)
- Disintegrating Or Milling (AREA)
- Adjustment And Processing Of Grains (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9002804 | 1990-03-06 | ||
FR9002804 | 1990-03-06 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0471060A1 true EP0471060A1 (en) | 1992-02-19 |
EP0471060B1 EP0471060B1 (en) | 1993-06-09 |
Family
ID=9394417
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP91905840A Expired - Lifetime EP0471060B1 (en) | 1990-03-06 | 1991-03-06 | Method and system for crushing and drying a solid fuel |
Country Status (8)
Country | Link |
---|---|
US (1) | US5191724A (en) |
EP (1) | EP0471060B1 (en) |
JP (1) | JP3003872B2 (en) |
AT (1) | ATE90440T1 (en) |
DE (1) | DE69100107T2 (en) |
DK (1) | DK0471060T3 (en) |
ES (1) | ES2041558T3 (en) |
WO (1) | WO1991014133A1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6226891B1 (en) * | 1999-12-06 | 2001-05-08 | Daniel R. Chapman | Method and apparatus for drying iron ore pellets |
JP7325948B2 (en) * | 2018-11-21 | 2023-08-15 | 三菱重工業株式会社 | Pulverized Coal Drying System for Pulverized Coal Mill, Pulverized Coal Drying Method Therefor, Pulverized Coal Drying Program, Pulverized Coal Mill, Combined Gasification Combined Cycle System |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1118768A (en) * | 1953-12-01 | 1956-06-11 | Combustion Eng | Improvements made to control and adjustment devices for the supply of pulverized coal and combustion air to boiler hearths |
DE1138994B (en) * | 1958-08-22 | 1962-10-31 | Hazemag Hartzerkleinerung | Grinding plant |
US3189285A (en) * | 1962-12-18 | 1965-06-15 | Riley Stoker Corp | Ball mill |
US3273520A (en) * | 1964-12-29 | 1966-09-20 | Combustion Eng | Method and apparatus for air temperature regulation |
US3894344A (en) * | 1974-01-22 | 1975-07-15 | Dravo Corp | Method and apparatus for drying materials in fixed beds |
AT374491B (en) * | 1982-01-20 | 1984-04-25 | Voest Alpine Ag | METHOD FOR CONTINUOUS DRYING AND FINISHING OF ORGANIC SOLIDS, E.g. BROWN COALS |
JPS60105819A (en) * | 1983-11-14 | 1985-06-11 | Hitachi Ltd | Control method of air preheater |
FR2591127B1 (en) * | 1985-12-11 | 1989-10-06 | Stein Industrie | ROTARY CYLINDRICAL CRUSHER FOR THE PREPARATION OF A POWDERY MATERIAL IN TWO DIFFERENT QUALITIES. |
-
1991
- 1991-03-06 ES ES199191905840T patent/ES2041558T3/en not_active Expired - Lifetime
- 1991-03-06 EP EP91905840A patent/EP0471060B1/en not_active Expired - Lifetime
- 1991-03-06 DE DE9191905840T patent/DE69100107T2/en not_active Expired - Fee Related
- 1991-03-06 US US07/775,951 patent/US5191724A/en not_active Expired - Fee Related
- 1991-03-06 WO PCT/FR1991/000180 patent/WO1991014133A1/en active IP Right Grant
- 1991-03-06 DK DK91905840.4T patent/DK0471060T3/en active
- 1991-03-06 AT AT91905840T patent/ATE90440T1/en not_active IP Right Cessation
- 1991-03-06 JP JP3505787A patent/JP3003872B2/en not_active Expired - Lifetime
Non-Patent Citations (1)
Title |
---|
See references of WO9114133A1 * |
Also Published As
Publication number | Publication date |
---|---|
ES2041558T3 (en) | 1993-11-16 |
JP3003872B2 (en) | 2000-01-31 |
DE69100107T2 (en) | 1993-09-16 |
EP0471060B1 (en) | 1993-06-09 |
ATE90440T1 (en) | 1993-06-15 |
DK0471060T3 (en) | 1993-10-18 |
US5191724A (en) | 1993-03-09 |
DE69100107D1 (en) | 1993-07-15 |
JPH04505652A (en) | 1992-10-01 |
WO1991014133A1 (en) | 1991-09-19 |
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