FI97609B - Procedure for drying particles, especially shavings - Google Patents

Procedure for drying particles, especially shavings Download PDF

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Publication number
FI97609B
FI97609B FI950583A FI950583A FI97609B FI 97609 B FI97609 B FI 97609B FI 950583 A FI950583 A FI 950583A FI 950583 A FI950583 A FI 950583A FI 97609 B FI97609 B FI 97609B
Authority
FI
Finland
Prior art keywords
fractions
particles
dried
drying
different
Prior art date
Application number
FI950583A
Other languages
Finnish (fi)
Swedish (sv)
Other versions
FI97609C (en
FI950583A (en
FI950583A0 (en
Inventor
Pentti Raura
Ari Hemmilae
Original Assignee
Sunds Defibrator Loviisa Oy
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Sunds Defibrator Loviisa Oy filed Critical Sunds Defibrator Loviisa Oy
Priority to FI950583A priority Critical patent/FI97609C/en
Publication of FI950583A0 publication Critical patent/FI950583A0/en
Priority to DE19603892A priority patent/DE19603892A1/en
Priority to IT96MI000231A priority patent/IT1282017B1/en
Priority to CA002169215A priority patent/CA2169215A1/en
Priority to CN96105925.7A priority patent/CN1137633A/en
Publication of FI950583A publication Critical patent/FI950583A/en
Application granted granted Critical
Publication of FI97609B publication Critical patent/FI97609B/en
Publication of FI97609C publication Critical patent/FI97609C/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B1/00—Preliminary treatment of solid materials or objects to facilitate drying, e.g. mixing or backmixing the materials to be dried with predominantly dry solids

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Drying Of Solid Materials (AREA)

Description

9760997609

MENETELMÄ PARTIKKELIEN, ERITYISESTI LASTUJEN, KUIVAAMISEKSIMETHOD OF DRYING PARTICLES, ESPECIALLY CHIPS

5 Keksintö kohdistuu patenttivaatimuksen 1 johdanto-osan mukaiseen menetelmään partikkelien, erityisesti lastujen, kuivaamiseksi.The invention relates to a method for drying particles, in particular chips, according to the preamble of claim 1.

Partikkelien, erityisesti erilaisissa levymäisten kappaleiden valmistuksessa käytettävien lastujen tai kuitujen, loppukos-10 teuteen vaikuttavat partikkeleiden paksuus, alkukosteus, kui-vauslämpötila ja kuivausaika. Käytettävässä partikkeliseoksessa, esimerkiksi lastuseoksissa on huomattavan erikokoisia fraktioita. Hienot lastut kuivuvat liikaa, niiden lämpötila nousee ja hiilivedyt alkavat haihtua. Paksuimmat lastut taas saattavat 15 jäädä liian kosteiksi. Tuotteeseen soveltuvat pinta- ja keski-lastut kuivataan nykyään yhdessä kuivaajassa tai kahdessa, pinta ja keskilastut erikseen. Tunnetaan myös ratkaisuja, joissa lastuseos aluksi esikuivataan ja sen jälkeen erotellaan ja jälkikuivataan. Tällaiset laitteistot ovat monimutkaisia ja 20,, vaativat paljon energiaa.The final moisture content of the particles, especially chips or fibers used in the manufacture of various sheet-like bodies, is affected by the thickness, initial moisture, drying temperature and drying time of the particles. The particle mixture used, for example chip mixtures, has fractions of considerably different sizes. Fine chips dry out too much, their temperature rises and the hydrocarbons begin to evaporate. The thickest chips, on the other hand, may be too wet. The surface and middle chips suitable for the product are now dried in one dryer or two, the surface and middle chips separately. Solutions are also known in which the chip mixture is first pre-dried and then separated and post-dried. Such equipment is complex and requires a lot of energy.

Tämän keksinnön tarkoituksena on aikaansaada aivan uudenlainen kuivausmenetelmä, jonka avulla vältetään tunnetun tekniikan haitat.The object of the present invention is to provide a completely new type of drying method which avoids the disadvantages of the prior art.

2525

Keksinnölle on tunnusomaista se, mitä on mainittu patenttivaatimuksissa.The invention is characterized by what is stated in the claims.

Keksinnön mukaisella menetelmällä on lukuisia merkittäviä etuja. 30 Partikkeleiden loppukosteus saadaan halutuksi ja tasaiseksi. Kuivausaika saadaan optimoiduksi. Energiatalous kohenee. Partikkelien edelleen käytön kannalta saavutetaan haluttu kuivaustu-los. Mahdolliset haitalliset emissiot saadaan myös paremmin hallintaan.The method according to the invention has numerous significant advantages. 30 The final moisture content of the particles is obtained as desired and even. The drying time can be optimized. The energy economy is improving. For further use of the particles, the desired drying result is achieved. Potential harmful emissions are also better controlled.

35 Seuraavassa keksintöä selostetaan erään edullisen esimerkin avulla.In the following, the invention will be described by means of a preferred example.

2 976092 97609

Keksinnön mukaan partikkeliseos, joka sisältää eripaksuisia partikkeleita seulotaan ennen kuivausta esimerkiksi paksuuden mukaisiin jakeisiin. Jakeet kuivataan erikseen käyttämällä erillisiä kuivaajia kullekin jakeelle. Voidaan myös syöttää 5 seulotut jakeet yhden kuivaajan eri vyöhykkeisiin, esimerkiksi eri kohtiin kuivaajassa, jolloin kuivattavien partikkelien viipymä saadaan optimoiduksi kullekin jaekoolle edullisimmaksi.According to the invention, a particle mixture containing particles of different thicknesses is screened before drying, for example into fractions according to thickness. The fractions are dried separately using separate dryers for each fraction. It is also possible to feed the screened fractions to different zones of one dryer, for example to different points in the dryer, whereby the residence time of the particles to be dried is optimized for each fraction size.

Partikkelit jaetaan sopivimmin tyypillisesti 2-6 jakeeseen.The particles are preferably divided into typically 2-6 fractions.

10 Kuivaus voi tapahtua sinänsä tunnetuilla kuivaajilla. Kuivaustulos saadaan halutuksi, koska samankokoiset partikkelit on helppo kuivata nimenomaan niille suunnitellussa kuivaajassa tai niiden viipymä kuivaajassa saadaan optimoiduksi. Voidaan aikaansaada tasainen kosteus kaikille jakeille tai tarpeen mukaan myös eri 15 jakeille eri loppukosteus.10 Drying can take place with dryers known per se. The drying result is desired because particles of the same size are easy to dry in a dryer designed specifically for them, or their residence time in the dryer is optimized. Even moisture can be obtained for all fractions or, if necessary, also for different fractions with different final moisture.

Tällainen kosteana tapahtuva partikkeleiden seulonta eri jakeisiin paksuuden mukaan voidaan suorittaa millä tahansa soveliaalla menetelmällä, esimerkiksi sinänsä tunnetulla telaseulalla.Such wet screening of particles for different fractions according to thickness can be carried out by any suitable method, for example with a roller screen known per se.

2020

Alan ammattimiehelle on selvää, että keksintö ei ole rajoitettu edellä esitettyihin toteutusmuotoesimerkkeihin, vaan sitä voidaan vaihdella oheisten patenttivaatimusten puitteissa.It will be clear to a person skilled in the art that the invention is not limited to the embodiments presented above, but can be varied within the scope of the appended claims.

Claims (5)

9760997609 1. Menetelmä partikkeleiden, erityisesti lastujen kuivaamiseksi, tunnettu siitä, että partikkelit seulotaan kosteana 5 ennen kuivaamista ainakin kahteen jakeeseen ja jakeet kuivataan sinänsä tunnetusti.A method for drying particles, in particular chips, characterized in that the particles are screened wet before drying into at least two fractions and the fractions are dried as is known per se. 2. Patenttivaatimuksen 1 mukainen menetelmä, tunnettu siitä, että jakeet kuivataan eri kuivaajissa. 10Process according to Claim 1, characterized in that the fractions are dried in different dryers. 10 3. Patenttivaatimuksen 1 tai 2 mukainen menetelmä, tunnet-t u siitä, että jakeet kuivataan yhdessä kuivaajassa, jolloin eri jakeet syötetään kuivaajan eri vyöhykkeisiin.Method according to Claim 1 or 2, characterized in that the fractions are dried in a single dryer, the different fractions being fed to different zones of the dryer. 4. Jonkin patenttivaatimuksista 1-3 mukainen menetelmä, tunnettu siitä, että partikkelit jaetaan 2-6 jakeeseen paksuuden mukaan.Method according to one of Claims 1 to 3, characterized in that the particles are divided into 2 to 6 fractions according to thickness. 5. Jonkin patenttivaatimuksista 1-4 mukainen menetelmä, 20 tunnettu siitä, että eri jakeet kuivataan kullekin jakeelle haluttuihin loppukosteusarvoihin. 97609Method according to one of Claims 1 to 4, characterized in that the different fractions are dried to the desired final moisture values for each fraction. 97609
FI950583A 1995-02-10 1995-02-10 Method for drying particles, especially chips FI97609C (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
FI950583A FI97609C (en) 1995-02-10 1995-02-10 Method for drying particles, especially chips
DE19603892A DE19603892A1 (en) 1995-02-10 1996-02-03 Particulate material drying
IT96MI000231A IT1282017B1 (en) 1995-02-10 1996-02-08 METHOD FOR DRYING PARTICULATE MATTER PARTICULARLY FLAGRED MATERIALS
CA002169215A CA2169215A1 (en) 1995-02-10 1996-02-09 Method of drying particulate matter, particularly chipped materials
CN96105925.7A CN1137633A (en) 1995-02-10 1996-02-10 Method of drying particulate matter, particularly chipped materials

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI950583A FI97609C (en) 1995-02-10 1995-02-10 Method for drying particles, especially chips
FI950583 1995-02-10

Publications (4)

Publication Number Publication Date
FI950583A0 FI950583A0 (en) 1995-02-10
FI950583A FI950583A (en) 1996-08-11
FI97609B true FI97609B (en) 1996-10-15
FI97609C FI97609C (en) 1997-01-27

Family

ID=8542827

Family Applications (1)

Application Number Title Priority Date Filing Date
FI950583A FI97609C (en) 1995-02-10 1995-02-10 Method for drying particles, especially chips

Country Status (5)

Country Link
CN (1) CN1137633A (en)
CA (1) CA2169215A1 (en)
DE (1) DE19603892A1 (en)
FI (1) FI97609C (en)
IT (1) IT1282017B1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2354909A1 (en) 2001-08-08 2003-02-08 Liheng Chen Low density oriented strand board
NL2023895B1 (en) * 2019-09-25 2021-05-25 Tanis Confectionery B V method and system for drying a moulding powder used in a confectionery moulding process
US11359862B1 (en) * 2022-02-11 2022-06-14 Evan Nyer Method of carbon sequestering

Also Published As

Publication number Publication date
FI97609C (en) 1997-01-27
CA2169215A1 (en) 1996-08-11
IT1282017B1 (en) 1998-03-06
ITMI960231A0 (en) 1996-02-08
FI950583A (en) 1996-08-11
FI950583A0 (en) 1995-02-10
ITMI960231A1 (en) 1997-08-08
CN1137633A (en) 1996-12-11
DE19603892A1 (en) 1996-08-14

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Owner name: SUNDS DEFIBRATOR LOVIISA OY

BB Publication of examined application