DE424791C - Process for reducing the moisture content of raw brown coal - Google Patents
Process for reducing the moisture content of raw brown coalInfo
- Publication number
- DE424791C DE424791C DEH97003D DEH0097003D DE424791C DE 424791 C DE424791 C DE 424791C DE H97003 D DEH97003 D DE H97003D DE H0097003 D DEH0097003 D DE H0097003D DE 424791 C DE424791 C DE 424791C
- Authority
- DE
- Germany
- Prior art keywords
- moisture content
- reducing
- dried
- drying apparatus
- coal
- 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.)
- Expired
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L5/00—Solid fuels
- C10L5/02—Solid fuels such as briquettes consisting mainly of carbonaceous materials of mineral or non-mineral origin
- C10L5/04—Raw material of mineral origin to be used; Pretreatment thereof
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Solid Fuels And Fuel-Associated Substances (AREA)
Description
Verfahren zur Verringerung des Feuchtigkeitsgehaltes der rohen Braunkohle. Beim Transport der rohen (sogenannten grünen) Braunkohle zu den Trockenapparaten, der durchweg fast nur mittels Transportbänder bewirkt wird, zeigt sich häufig der große Mißstand, daß, sobald die Kohle einen bestimmten Feuchtigkeitsgrad überschreitet, sie anfängt, eine teigartige Masse zu bilden, welche sich am Eingang in die Röhren der Röhrentrockner mehr oder weniger festsetzt und sich dann nicht mehr ordnungsgemäß fortbewegt, so daß nicht nur unangenehme Störungen des Betriebes entstehen, sondern auch die Leistungsfähigkeit der Anlage schwer beeinträchtigt wird. Es handelt sich dabei oft nur um wenige Prozente mehr oder weniger Wassergehalt, und zwar beginnen die Schwierigkeiten gewöhnlich, sobald der Wassergehalt etwa 58 Prozent überschreitet.Process for reducing the moisture content of raw lignite. When transporting the raw (so-called green) lignite to the drying apparatus, which is almost exclusively achieved by means of conveyor belts, is often the case great grievance that as soon as the coal exceeds a certain degree of humidity, it starts to form a dough-like mass, which is at the entrance to the tubes the tube dryer more or less seizes and then no longer functions properly moved, so that not only unpleasant disruptions arise, but the performance of the system is also severely impaired. It is about often only a few percent more or less water content, and indeed begin the trouble usually when the water content exceeds about 58 percent.
Es ist nun bekannt, zur Verringerung des Wassergehalts der Kohle und zur Beseitigung dieser Mißstände der grünen Kohle getrocknete Kohle aus den Trockenapparaten zuzusetzen.It is now known to reduce the water content of coal and to remedy these shortcomings of green coal, dried coal from the drying apparatus to add.
Hiervon ausgehend, besteht die Erfindung darin, daß die aus den Trockenapparaten kommende Kohle in geeigneten Sieben zunächst nach verschiedenen Stückgrößen (Knorpelgrößen) gesichtet wird, wobei gleichzeitig vorteilhaft zuerst eine Absaugung des feinsten Staubes vorgenommen wird. Die ausreichend getrockneten Teile, deren Feuchtigkeitsgehalt ein solcher ist, daß er einer guten Brikettierung entspricht, werden darin unmittelbar den Brikettpressen zugeführt, während die dickeren Teile entweder unmittelbar oder, nachdem sie in einem Nachwalzwerk entsprechend zerkleinert sind, den grünen Kohlen wieder zugesetzt werden. Sie betragen etwa to bis 25 Prozent der Gesamtmenge und sind auf etwa 3o bis 5o Prozent Wassergehalt getrocknet. Durch die Mischung mit den grünen Kohlen, die etwa 6o Prozent Wassergehalt besitzen, wird der letztere derart verringert, daß ein Durchschnittsfeuchtigkeitsgehalt erzielt wird, bei welchem die Kohlen gut in die Röhren des Trockners gehen, so daß die obenerwähnten Mißstände nicht mehr eintreten können.Proceeding from this, the invention consists in that from the drying apparatus Coming coal in suitable sieves initially according to different piece sizes (cartilage sizes) is sighted, at the same time advantageously a suction of the finest first Dust is made. The sufficiently dried parts, their moisture content one such is that it corresponds to a good briquetting, are in it immediately fed to the briquette presses, while the thicker parts either directly or after they have been comminuted accordingly in a roller mill, the green coals be added again. They amount to approximately to 25 percent of the total amount and are dried to a water content of about 3o to 5o percent. By mixing with the latter becomes the green coals, which have about 60 percent water content so reduced that an average moisture content is obtained at which the coals go well into the tubes of the dryer, so that the abovementioned abuses can no longer enter.
Man wird vorteilhaft die Einrichtung so treffen, daß der Zusatz der gesiebten trocknen Kohlenteile zur grünen Kohle nur dann erfolgt, wenn beispielsweise infolge nasser Witterung die grüne Kohle tatsächlich zu naß ist, während, wenn sie bei warmem trocknen Wetter den zulässigen Feuchtigkeitsgehalt nicht überschreitet, man sie allein zu den '3achtrocknern laufen läßt und, da sie bereits genügend zerkleinert sind, die jetzt genügend getrockneten Knorpel unmittelbar zu den Brikettpressen schicken.It will be advantageous to make the device so that the addition of sifted dry coal parts to green coal only takes place when, for example as a result of wet weather the green coal is actually too wet, while if it in warm dry weather does not exceed the permissible moisture content, they are left to run alone to the eight dryers and, since they are already sufficiently shredded the cartilage, which is now sufficiently dried, goes straight to the briquette presses send.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEH97003D DE424791C (en) | 1924-04-26 | 1924-04-26 | Process for reducing the moisture content of raw brown coal |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEH97003D DE424791C (en) | 1924-04-26 | 1924-04-26 | Process for reducing the moisture content of raw brown coal |
Publications (1)
Publication Number | Publication Date |
---|---|
DE424791C true DE424791C (en) | 1926-01-28 |
Family
ID=7167704
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEH97003D Expired DE424791C (en) | 1924-04-26 | 1924-04-26 | Process for reducing the moisture content of raw brown coal |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE424791C (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE740233C (en) * | 1936-07-01 | 1943-10-15 | Franz Herglotz | Process for the treatment of over-humid raw brown coal |
-
1924
- 1924-04-26 DE DEH97003D patent/DE424791C/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE740233C (en) * | 1936-07-01 | 1943-10-15 | Franz Herglotz | Process for the treatment of over-humid raw brown coal |
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