DE1468226B2 - PROCESS FOR THE MANUFACTURING OF ALKALICELLULOSE - Google Patents
PROCESS FOR THE MANUFACTURING OF ALKALICELLULOSEInfo
- Publication number
- DE1468226B2 DE1468226B2 DE19621468226 DE1468226A DE1468226B2 DE 1468226 B2 DE1468226 B2 DE 1468226B2 DE 19621468226 DE19621468226 DE 19621468226 DE 1468226 A DE1468226 A DE 1468226A DE 1468226 B2 DE1468226 B2 DE 1468226B2
- Authority
- DE
- Germany
- Prior art keywords
- cellulose
- alkali
- caustic alkali
- embrittled
- dry
- 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.)
- Withdrawn
Links
- 238000004519 manufacturing process Methods 0.000 title claims description 12
- 238000000034 method Methods 0.000 title claims description 11
- 230000008569 process Effects 0.000 title claims description 9
- 239000001913 cellulose Substances 0.000 claims description 47
- 229920002678 cellulose Polymers 0.000 claims description 45
- 235000010980 cellulose Nutrition 0.000 claims description 45
- 239000003513 alkali Substances 0.000 claims description 27
- 239000003518 caustics Substances 0.000 claims description 9
- 238000006243 chemical reaction Methods 0.000 claims description 5
- 239000007795 chemical reaction product Substances 0.000 claims description 4
- 239000000843 powder Substances 0.000 claims description 4
- 239000007787 solid Substances 0.000 claims description 4
- 239000000725 suspension Substances 0.000 claims description 4
- 238000000227 grinding Methods 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 2
- 235000019814 powdered cellulose Nutrition 0.000 claims description 2
- 229920003124 powdered cellulose Polymers 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 2
- 238000001816 cooling Methods 0.000 claims 1
- 230000001771 impaired effect Effects 0.000 claims 1
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 14
- 235000011121 sodium hydroxide Nutrition 0.000 description 5
- 238000001035 drying Methods 0.000 description 4
- 229920002134 Carboxymethyl cellulose Polymers 0.000 description 2
- 229910001854 alkali hydroxide Inorganic materials 0.000 description 2
- 150000008044 alkali metal hydroxides Chemical class 0.000 description 2
- 239000001768 carboxy methyl cellulose Substances 0.000 description 2
- 235000010948 carboxy methyl cellulose Nutrition 0.000 description 2
- 239000008112 carboxymethyl-cellulose Substances 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 235000014510 cooky Nutrition 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 238000007654 immersion Methods 0.000 description 2
- 229920000609 methyl cellulose Polymers 0.000 description 2
- 239000001923 methylcellulose Substances 0.000 description 2
- 235000010981 methylcellulose Nutrition 0.000 description 2
- 238000006116 polymerization reaction Methods 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 230000035484 reaction time Effects 0.000 description 2
- 230000009257 reactivity Effects 0.000 description 2
- 239000007858 starting material Substances 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- VJHCJDRQFCCTHL-UHFFFAOYSA-N acetic acid 2,3,4,5,6-pentahydroxyhexanal Chemical compound CC(O)=O.OCC(O)C(O)C(O)C(O)C=O VJHCJDRQFCCTHL-UHFFFAOYSA-N 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 235000010944 ethyl methyl cellulose Nutrition 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 229920003087 methylethyl cellulose Polymers 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000001665 trituration Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
- C08B11/00—Preparation of cellulose ethers
- C08B11/02—Alkyl or cycloalkyl ethers
- C08B11/04—Alkyl or cycloalkyl ethers with substituted hydrocarbon radicals
- C08B11/10—Alkyl or cycloalkyl ethers with substituted hydrocarbon radicals substituted with acid radicals
- C08B11/12—Alkyl or cycloalkyl ethers with substituted hydrocarbon radicals substituted with acid radicals substituted with carboxylic radicals, e.g. carboxymethylcellulose [CMC]
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
- B01F23/30—Mixing gases with solids
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
- B01F23/30—Mixing gases with solids
- B01F23/39—Mixing systems, i.e. flow charts or diagrams
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F33/00—Other mixers; Mixing plants; Combinations of mixers
- B01F33/80—Mixing plants; Combinations of mixers
- B01F33/836—Mixing plants; Combinations of mixers combining mixing with other treatments
- B01F33/8361—Mixing plants; Combinations of mixers combining mixing with other treatments with disintegrating
- B01F33/83612—Mixing plants; Combinations of mixers combining mixing with other treatments with disintegrating by crushing or breaking
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/71—Feed mechanisms
- B01F35/717—Feed mechanisms characterised by the means for feeding the components to the mixer
- B01F35/71775—Feed mechanisms characterised by the means for feeding the components to the mixer using helical screws
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
- C08B1/00—Preparatory treatment of cellulose for making derivatives thereof, e.g. pre-treatment, pre-soaking, activation
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
- C08B1/00—Preparatory treatment of cellulose for making derivatives thereof, e.g. pre-treatment, pre-soaking, activation
- C08B1/08—Alkali cellulose
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
- C08B11/00—Preparation of cellulose ethers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
- C08B17/00—Apparatus for esterification or etherification of cellulose
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
- C08B3/00—Preparation of cellulose esters of organic acids
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F33/00—Other mixers; Mixing plants; Combinations of mixers
- B01F33/80—Mixing plants; Combinations of mixers
- B01F33/81—Combinations of similar mixers, e.g. with rotary stirring devices in two or more receptacles
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biochemistry (AREA)
- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Polysaccharides And Polysaccharide Derivatives (AREA)
Description
Die Erfindung betrifft ein Trockenverfahren zur Beispiel
Herstellung von Alkalicellulose.The invention relates to a drying process for example
Manufacture of alkali cellulose.
Das erfindungsgemäße Verfahren zur Herstellung 35 In eine Strömungsmühle mit einer StundenleistungThe Process According to the Invention for Production 35 In a flow mill with an hourly output
von Alkalicellulose ist dadurch gekennzeichnet, daß von 250 kg Endprodukt wurden eingegeben proof alkali cellulose is characterized in that out of 250 kg of end product were entered per
man pulverförmige Cellulose oder durch Mahlen zu Minute 30 cbm Luft von einem relativen Feuchtigkeits-powdery cellulose or by grinding to minute 30 cbm of air from a relative humidity
pulverförmiger Cellulose verarbeitbare, versprödete gehalt von 20 °/0 ur>d einer Temperatur von 200C undpulverulent cellulose processable, embrittled content of 20 ° / 0 ur > d a temperature of 20 0 C and
Cellulose mit einem Feuchtigkeitsgehalt von etwa 1 bis im Verlauf einer Stunde 150 kg versprödete CelluloseCellulose with a moisture content of about 1 to 150 kg of embrittled cellulose in the course of an hour
10% in äußerlich trockenem Zustand mit trockenem 40 in Form von Blättchen von einem Durchmesser von10% in the externally dry state with dry 40 in the form of leaflets with a diameter of
Ätzalkali in etwa der für die Herstellung von Alkali- 1 bis 5 cm mit einem Feuchtigkeitsgehalt von 4% undCaustic alkali roughly that for the production of alkali 1 to 5 cm with a moisture content of 4% and
cellulose notwendigen oder gewünschten Mengen zu- 100 kg Ätznatron in Form von Schuppen eines Durch-cellulose necessary or desired amounts to- 100 kg caustic soda in the form of flakes of a through-
sammengibt und in einer ein lockeres Endprodukt er- messers von etwa 1 cm und handelsüblichem Feuchtig-'together and in a loose end product of about 1 cm and commercially available moist '
gebenden Mühle verreibt. . keitsgehalt. .giving mill grinds. . salary. .
Ausgangsstoffe für das Verfahren der Erfindung sind 45 Die Stromgeschwindigkeit beim Eintritt betrugStarting materials for the process of the invention are 45 The inlet flow rate was
pulverförmige Cellulose und nach einer bevorzugten 50 m/sec.pulverulent cellulose and after a preferred 50 m / sec.
Ausführungsform versprödete Cellulose in Blättchen- Die in der Strömungsmühle anfallende Suspension
form, die durch Vermählen in pulverförmige Cellulose von Alkalicellulose in Luft enthielt etwa 0,01 Volumüberführbar ist, einerseits und festes Alkalihydroxid, prozent Alkalicellulose in Form von Teilchen von unter
z. B. Natriumhydroxid, vorzugsweise in Schuppen- 50 200 Mikron Durchmesser,
form oder Plätzchenform, andererseits. Das Reaktionsprodukt zeichnet sich gegenüber einerEmbrittete cellulose in lamellar embodiment, the resulting suspension in the flow mill, which by grinding into powdered cellulose of alkali cellulose in air contained about 0.01 volume can be converted, on the one hand and solid alkali hydroxide, percent alkali cellulose in the form of particles of less than z. B. Sodium Hydroxide, preferably in flakes - 50 to 200 microns in diameter,
shape or cookie shape, on the other hand. The reaction product stands out against a
Die Verwendung von versprödeter Cellulose in im Tauchverfahren hergestellten Alkalicellulose durchThe use of embrittled cellulose in alkali cellulose produced by the immersion process
Blättchenform und festem Alkalihydroxid in Schuppen- zwei wesentliche Eigenschaften aus. Die nach dem Ver-Flake form and solid alkali hydroxide in flakes - two essential properties. The after the
form oder Plätzchenform ist vorteilhaft, da die frischen fahren der Erfindung hergestellte Alkalicellulose istform or cookie form is advantageous as the fresh drive of the invention is made from alkali cellulose
Bruchflächen beim Verreiben unter Zerkleinern mit- 55 wesentlich reaktionsbereiter und außerdem hältbarer,Fracture surfaces when rubbed with crushing - 55 considerably more reactive and also more durable,
einander rascher reagieren als z. B. gelagerte Pulver- was sich durch den beträchtlich geringeren molekularenreact to each other faster than z. B. stored powder - which is due to the considerably lower molecular weight
körnchen. Abbau beim Lagern erweist. Die übliche Ausgangs-granules. Evidence of degradation during storage. The usual starting
Nach der Erfindung werden diese Aüsgangsmateria- cellulose hat einen Polymerisationsgrad von 700, alsoAccording to the invention, this starting material cellulose has a degree of polymerization of 700, ie
lien unter Verkleinerung der Teilchengröße in an sich DP^ = 700. Die Lagerfähigkeit ergibt sich aus derlien while reducing the particle size in per se DP ^ = 700. The shelf life results from the
bekannten Mühlen, die ein lockeres Mahlgut schaffen, 60 Vergleichstabelle für eine Lagerfähigkeitsuntersuchungknown mills that create a loose grist, 60 comparison table for a shelf life study
z. B. Stiftmühlen, Hammermühlen, Prallmühlen u. dgl., bei Anwesenheit von Luft von 400C. In der erstenz. U as pin mills, hammer mills, impact mills. The like., In the presence of air at 40 0 C. In the first
miteinander verrieben. Spalte ist die Lagerzeit angegeben. Die mittlere Spalterubbed together. The storage time is indicated in the column. The middle column
Bevorzugt sind Strömungsmühlen, bei denen das gibt an den Polymerisationsendwert DPb für eine imFlow mills in which this gives the final polymerization value DPb for an im are preferred
zu mahlende Gut in einem Gasstrom, insbesondere Tauchverfahren und die rechte Spalte gibt an den PoIy-material to be ground in a gas stream, in particular immersion processes and the right column indicates the poly-
einem Luftstrom, aufgewirbelt und durch diese Auf- 65 merisationsendwert DPj? für eine nach dem Trocken-an air stream, whirled up and through this accumulation end value DPj? for one after the dry
wirbelung und Anwerfen an Prallplatten zerkleinert verfahren der Erfindung hergestellte Alkalicellulose,whirling and throwing on baffle plates comminuted process of the invention produced alkali cellulose,
wird. wobei jeweils gleiche Verhältnismengen Cellulose undwill. with the same proportions of cellulose and
Bei dem Verreiben des Gemisches von Pulvercellu- NaOH für die Herstellung angewendet wurden.In the trituration of the mixture of powder cellu- NaOH were used for the preparation.
Cellulose: NaOH: H2O
1:1:2DP B for
Cellulose: NaOH: H 2 O
1: 1: 2
Cellulose: NaOH
1:1DPb for
Cellulose: NaOH
1: 1
1
5
210.125
1
5
21
nicht meßbar klein
nicht meßbar klein
nicht meßbar klein190
not measurably small
not measurably small
not measurably small
665
640
600680
665
640
600
Die größere Reaktionsbereitschaft einer nach dem Trockenverfahren der Erfindung hergestellten Alkalicellulose
zeigt sich sowohl bei der Herstellung von z. B. Carboxymethylcellulose als auch bei der Herstellung
von Methylcellulose. Die Reaktionszeiten liegen für auf übliche Weise hergestellte Alkalicellulose bei der
Herstellung von Carboxymethylcellulose bei 6 bis 8 Stunden und bei der Herstellung von Methylcellulose
bei 1 Stunde. Diese Reaktionszeiten ermäßigen sich für nach dem Trockenverfahren der Erfindung hergestellte
Cellulose auf 2 bis 3 Stunden bzw. 1I2 Stunde.
Auch bei der Xanthogenierung ergibt sich ein wesentlich rascherer Verlauf.
Ein besonderer Vorteil einer lagerbeständigen Cellulose,
gewonnen nach dem Trockenverfahren der Erfindung, ist auch der, daß bei dem weiteren Umsatz
einer solchen Alkalicellulose bei allen Reaktionen, die in Gegenwart von Wasser ausgeführt werden, ein
geringerer Abbau während des UmsetzungsvorgangesThe greater reactivity of an alkali cellulose produced by the dry process of the invention is evident both in the production of e.g. B. carboxymethyl cellulose as well as in the production of methyl cellulose. The reaction times for alkali cellulose produced in the usual way are 6 to 8 hours for the production of carboxymethyl cellulose and 1 hour for the production of methyl cellulose. These reaction times decrease to 2 to 3 hours and 1 1/2 hours, respectively, for cellulose produced by the dry process of the invention. The xanthogenation also takes a much faster course.
A particular advantage of a storage-stable cellulose obtained by the dry process of the invention is that with the further conversion of such an alkali cellulose in all reactions which are carried out in the presence of water, there is less degradation during the conversion process
ίο eintritt, so daß die aus einer solchen Alkalicellulose hergestellten Produkte ein höheres Molekulargewicht aufweisen als entsprechende Produkte, zu deren Herstellung nach bekannten Tauchverfahren hergestellte Alkalicellulose verwendet wurde.ίο occurs, so that from such an alkali cellulose manufactured products have a higher molecular weight than corresponding products for their manufacture Alkali cellulose produced by known dipping processes was used.
Die größere Reaktionsbereitschaft der Alkalicellulose nach dem Verfahren der Erfindung und die damit verkürzte Reaktionszeit ist ursächlich für den geringeren Abbau z. B. bei der Herstellung von Methyloder Carboxymethylcellulose.The greater reactivity of the alkali cellulose according to the method of the invention and the therewith The shortened response time is the reason for the lower reduction in z. B. in the production of methyl or Carboxymethyl cellulose.
Claims (3)
Feuchtigkeitsgehalt "von etwa 4% oder Pulver- Bei diesem Verreiben von Cellulose und Ätzalkali in cellulose mit einem Feuchtigkeitsgehalt von etwa lockerer Form, vorzugsweise in Form einer frei fiießen-2. Verfahrennach ^ claim 1, characterized in that it remains, whereby the externally dry characterizes that embrittled cellulose with a state is not impaired.
Moisture content "of about 4% or powder - In this rubbing of cellulose and caustic alkali in cellulose with a moisture content of roughly loose form, preferably in the form of a free-flowing
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEM0054675 | 1963-10-08 |
Publications (2)
Publication Number | Publication Date |
---|---|
DE1468226A1 DE1468226A1 (en) | 1968-12-05 |
DE1468226B2 true DE1468226B2 (en) | 1973-03-22 |
Family
ID=7308088
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19621468226 Withdrawn DE1468226B2 (en) | 1963-10-08 | 1962-10-31 | PROCESS FOR THE MANUFACTURING OF ALKALICELLULOSE |
Country Status (8)
Country | Link |
---|---|
BE (1) | BE638089A (en) |
CH (1) | CH437245A (en) |
DE (1) | DE1468226B2 (en) |
FI (1) | FI44591B (en) |
FR (1) | FR1371044A (en) |
GB (1) | GB1066588A (en) |
NL (1) | NL299879A (en) |
SE (1) | SE302607B (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE759977A (en) * | 1969-12-08 | 1971-06-07 | Kalle Ag | METHOD AND DEVICE FOR THE HOMOGENEOUS ALKALINIZATION OF CELLULOSE |
US4281109A (en) | 1980-03-03 | 1981-07-28 | National Starch And Chemical Corporation | Pollution-free cationization of starch |
DE3010464A1 (en) * | 1980-03-19 | 1981-10-01 | Henkel KGaA, 4000 Düsseldorf | METHOD FOR PRODUCING LOW-WATER ALKALICELLULOSE |
US4373098A (en) * | 1981-08-20 | 1983-02-08 | E. I. Du Pont De Nemours And Company | Process for converting cellulose directly into alkali cellulose |
JP6247283B2 (en) * | 2012-04-05 | 2017-12-13 | ストラ エンソ オーワイジェイ | Method for preparing cellulose ether by high solids method, resulting product and use of the product |
-
1962
- 1962-10-31 DE DE19621468226 patent/DE1468226B2/en not_active Withdrawn
-
1963
- 1963-08-23 FI FI1625/63A patent/FI44591B/fi active
- 1963-10-01 BE BE638089D patent/BE638089A/en unknown
- 1963-10-08 FR FR949880A patent/FR1371044A/en not_active Expired
- 1963-10-08 CH CH1235063A patent/CH437245A/en unknown
- 1963-10-28 GB GB42442/63A patent/GB1066588A/en not_active Expired
- 1963-10-29 SE SE11902/63A patent/SE302607B/sv unknown
- 1963-10-29 NL NL299879A patent/NL299879A/en unknown
Also Published As
Publication number | Publication date |
---|---|
NL299879A (en) | 1965-08-25 |
SE302607B (en) | 1968-07-29 |
FI44591B (en) | 1971-08-31 |
BE638089A (en) | 1964-04-01 |
GB1066588A (en) | 1967-04-26 |
CH437245A (en) | 1967-06-15 |
DE1468226A1 (en) | 1968-12-05 |
FR1371044A (en) | 1964-08-28 |
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