DE809433C - Process for the production of cellulose xanthate for the briquetting of coal dust - Google Patents
Process for the production of cellulose xanthate for the briquetting of coal dustInfo
- Publication number
- DE809433C DE809433C DEV268A DEV0000268A DE809433C DE 809433 C DE809433 C DE 809433C DE V268 A DEV268 A DE V268A DE V0000268 A DEV0000268 A DE V0000268A DE 809433 C DE809433 C DE 809433C
- Authority
- DE
- Germany
- Prior art keywords
- coal dust
- cellulose
- briquetting
- production
- xanthate
- 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
- C10L5/06—Methods of shaping, e.g. pelletizing or briquetting
- C10L5/10—Methods of shaping, e.g. pelletizing or briquetting with the aid of binders, e.g. pretreated binders
- C10L5/14—Methods of shaping, e.g. pelletizing or briquetting with the aid of binders, e.g. pretreated binders with organic binders
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Polysaccharides And Polysaccharide Derivatives (AREA)
- Solid Fuels And Fuel-Associated Substances (AREA)
Description
Verfahren zum Herstellen von Cellulose-Xanthogenat für die Brikettierung von Kohlenstaub Im Patent $o3 597 ist ein Verfahren niedergelegt, welches vorsieht, Kohlenstaub unter Zuhilfenahme von Xanthogenat als Bindemittel zu brikettieren. Das Verfahren wird in der «'eise ausgeführt, daß der Kohlenstaub in trockenem oder feuchtem Zustand mit feinkrümeligem Cellulose-Xanthogenat vermischt wird, worauf dann die entsprechende Menge Wasser zugefügt wird, die erforderlich ist, um das Xanthogenat anzulösen und so die Klebewirkung zu erzielen. Man kann das Verfahren auch so ausführen, daß das Cellulose-Xanthogenat kurz in Wasser aufgeschlagen wird, um es dann mit dem richtigen Feuchtigkeitsgehalt versehen dem Kohlenstaub zuzumischen. Voraussetzung für die Durchführung dieser Arbeitsweise ist, daß das Cellulose-Xanthogenat in sehr feinkrümeliger Beschaffenheit vorliegt, damit möglichst viele Kohleteilchen mit demselben in Berührung kommen, wodurch eine gute Klebewirkung gewährleistet wird. Beim normalen Sulfidierungs- bzw. Xanthogenierungsprozeß von feingemahlener Alkalicellulose mit Schwefelkohlenstoff kleben leicht die xanthogenierten Cellulosefasern zusammen, so daß nach der durchgeführten Sulfidierung infolge dieses Verklebungsprozesses größere Teilchen vorliegen, als sie in der ursprünglichen Alkalicellulose vorhanden waren. Es ist deshalb erforderlich, bei Durchführung der Brikettierung von Kohlenstaub mit Hilfe von Xanthogenat dieses noch einmal durch Zerkleinerungsmaschinen zu schicken, um die ursprünglich feine Zerkleinerung wenigstens bis zu einem gewissen Grad wieder zu erreichen. Aber auch nach der Bearbeitung durch Zerreibermaschinen ist die ursprünglich in der Alkalicellulose vorliegende Verteilung noch nicht erreicht. .A process for the manufacture of cellulose xanthate for the briquetting of coal dust in Patent $ o3 597 a method is set forth which provides, to briquette coal dust with the aid of xanthate as a binder. The process is carried out in such a way that the coal dust is mixed in a dry or moist state with fine-crumbly cellulose xanthate, whereupon the appropriate amount of water is added which is necessary to dissolve the xanthate and thus to achieve the adhesive effect. The process can also be carried out in such a way that the cellulose xanthate is briefly whipped in water in order to then mix it with the coal dust, provided it has the correct moisture content. The prerequisite for carrying out this procedure is that the cellulose xanthate has a very fine crumbly texture so that as many coal particles as possible come into contact with it, which ensures a good adhesive effect. In the normal sulfidation or xanthogenation process of finely ground alkali cellulose with carbon disulfide, the xanthogenized cellulose fibers easily stick together, so that after the sulfidation carried out as a result of this gluing process, larger particles are present than were present in the original alkali cellulose. It is therefore necessary, when carrying out the briquetting of coal dust with the aid of xanthate, to send it through grinding machines again in order to achieve the originally fine size reduction at least to a certain extent. But even after processing by grinding machines, the distribution originally present in the alkali cellulose has not yet been achieved. .
Es wurde nun gefunden, daß es möglich ist, diese Feinverteilung der Alkalicellulose bis zum Schluß der Sulfidierung zu gewährleisten, wenn vor der Sulfidierung oder im ersten Teil des Sulfidierungsprozesses der Alkahcellulose Kohlenstaub zugefügt wird, der wie Puder wirkf und ein Aneinanderkleben der xanthogenierten Fasern verhindert.It has now been found that it is possible to achieve this fine division of the Ensure alkali cellulose until the end of the sulphidation, if before the sulphidation or coal dust is added to the alkali cellulose in the first part of the sulfidation process that acts like powder and prevents the xanthogenized fibers from sticking together.
Arbeitsbeispiel i Feingemahlene Alkalicellulose wird in einer Mischmaschine mit Kohlenstaub durchgemischt, der mengenmäßig 50°/o des Celluloseanteils der Alkalicellulose ausmacht. Darauf wird die Sulfidierung in üblicher Weise durchgeführt.Working example i Finely ground alkali cellulose is used in a blender mixed with coal dust, the quantitative 50% of the cellulose content of the alkali cellulose matters. The sulfidation is then carried out in the usual way.
Arbeitsbeispiel 2 Einer Alkalicellulose wird 1/2 Stunde nach Beginn des Sulfidierungsprozesses Kohlenstaub beigegeben, der mengenmäßig 8o°/, des Celluloseanteils der Alkalicellulose ausmacht. Hierauf wird die Sulfidierung zu Ende geführt.Working Example 2 An alkali cellulose is added 1/2 hour after the start coal dust added to the sulphidation process, the quantitative 80% of the cellulose content which makes up alkali cellulose. The sulphidation is then carried out to the end.
Claims (1)
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEP4458A DE803597C (en) | 1948-10-02 | 1948-10-02 | Process for the production of briquettes using binders |
| DEV268A DE809433C (en) | 1948-10-02 | 1949-12-20 | Process for the production of cellulose xanthate for the briquetting of coal dust |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEP4458A DE803597C (en) | 1948-10-02 | 1948-10-02 | Process for the production of briquettes using binders |
| DEV268A DE809433C (en) | 1948-10-02 | 1949-12-20 | Process for the production of cellulose xanthate for the briquetting of coal dust |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE809433C true DE809433C (en) | 1951-07-30 |
Family
ID=33099056
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DEP4458A Expired DE803597C (en) | 1948-10-02 | 1948-10-02 | Process for the production of briquettes using binders |
| DEV268A Expired DE809433C (en) | 1948-10-02 | 1949-12-20 | Process for the production of cellulose xanthate for the briquetting of coal dust |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DEP4458A Expired DE803597C (en) | 1948-10-02 | 1948-10-02 | Process for the production of briquettes using binders |
Country Status (1)
| Country | Link |
|---|---|
| DE (2) | DE803597C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102011014069A1 (en) * | 2011-03-16 | 2012-09-20 | Rwe Power Ag | Process for the production of shaped fuel bodies |
-
1948
- 1948-10-02 DE DEP4458A patent/DE803597C/en not_active Expired
-
1949
- 1949-12-20 DE DEV268A patent/DE809433C/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE803597C (en) | 1951-04-05 |
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