DE167033C - - Google Patents
Info
- Publication number
- DE167033C DE167033C DENDAT167033D DE167033DA DE167033C DE 167033 C DE167033 C DE 167033C DE NDAT167033 D DENDAT167033 D DE NDAT167033D DE 167033D A DE167033D A DE 167033DA DE 167033 C DE167033 C DE 167033C
- Authority
- DE
- Germany
- Prior art keywords
- furnace
- blast furnace
- carbide
- make
- alkaline earth
- 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.)
- Active
Links
- QGZKDVFQNNGYKY-UHFFFAOYSA-N ammonia Chemical class N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 3
- 229910052784 alkaline earth metal Inorganic materials 0.000 claims 1
- 150000001342 alkaline earth metals Chemical class 0.000 claims 1
- 125000004093 cyano group Chemical group *C#N 0.000 claims 1
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000005755 formation reaction Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- JMANVNJQNLATNU-UHFFFAOYSA-N Cyanogen Chemical compound N#CC#N JMANVNJQNLATNU-UHFFFAOYSA-N 0.000 description 1
- XZMCDFZZKTWFGF-UHFFFAOYSA-N carbodiimide Chemical compound NC#N XZMCDFZZKTWFGF-UHFFFAOYSA-N 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 150000001247 metal acetylides Chemical class 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000010517 secondary reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B5/00—Making pig-iron in the blast furnace
- C21B5/02—Making special pig-iron, e.g. by applying additives, e.g. oxides of other metals
- C21B5/023—Injection of the additives into the melting part
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Furnace Details (AREA)
Description
KAISERLICHESIMPERIAL
PATENTAMT.PATENT OFFICE.
Es ist bereits bekannt, Erdalkalikarbidbildungsgemische (Oxyde und andere schlackenbildende Stoffe vermischt mit Kohlenstoff) mit dem Gebläsewind in den Hochofen einzubringen; allerdings nur zu dem Zweck, den Gang des Ofens gleichmäßiger zu gestalten, ohne daß hierbei beabsichtigt wäre, einen Teil des Stickstoffs der Gebläseluft chemisch zu binden und nutzbar zu machen. Es istIt is already known that alkaline earth carbide formation mixtures (oxides and other slag-forming Substances mixed with carbon) to be brought into the blast furnace with the blower wind; but only for the purpose of making the course of the furnace more uniform, without the intention here being one To chemically bind part of the nitrogen in the blower air and make it usable. It is
ίο ferner bekannt, die mit dem Winde einzuführenden Stoffe vorzuwärmen; es geschieht dies zu dem Zweck, eine Abkühlung der Ofenzone, in welche diese Stoffe eingeführt werden sollen, durch die Expansion der flüchtigen Bestandteile zu verhüten.ίο also known to be introduced with the winch Preheat fabrics; this is done for the purpose of cooling the furnace zone into which these substances are introduced should be prevented by the expansion of the volatile constituents.
Die vorliegende Erfindung soll nun nicht nur den Gang des Hochofens gleichmäßiger gestalten, sondern soll auch vor allen Dingen den Hochofen in erhöhtem Maße nutzbar machen zur Gewinnung von Cyan- und Ammoniakverbindungen, wie sie bisher auch schon aus Hochofengasen gewonnen wurden. Es geschieht dies dadurch, daß gepulvertes Erdalkalikarbid in den Hochofen eingebrachtThe present invention is not only intended to make the operation of the blast furnace more uniform design, but above all should also make the blast furnace more usable make for the extraction of cyanogen and ammonia compounds, as they have already been obtained from blast furnace gases. It does this by introducing powdered alkaline earth carbide into the blast furnace
as wird, und zwar zweckmäßig an einer Stelle, an welcher die Innentemperatur des Hochofens etwa 800 bis iooo0 C. beträgt.as is, and indeed expediently at a point at which the internal temperature of the furnace is about 800 to 0 C. iooo.
Die Verwendung des fertiggebildeten Karbides an Stelle von Karbidbildungsgemischen hat folgende Vorteile:The use of the finished carbide in place of carbide forming mixtures has the following advantages:
ι. Zur Bildung der Karbide, z. B. aus Oxyden und Kohlenstoff, wird eine erhebliche Wärmemenge verbraucht; bei größeren Mengen ist deshalb eine starke Abkühlung vor den Düsen zu befürchten.ι. To form the carbides, e.g. B. from oxides and carbon, a significant Amount of heat consumed; With larger quantities, therefore, there is a risk of strong cooling in front of the nozzles.
2. Die Bewegung des Gasstromes im Hochofen ist so rasch, daß das Karbidbildungsgemisch zum größten Teil in solche Ofenzonen entführt wird, deren Temperatur zur Karbidbildung nicht mehr ausreicht.2. The movement of the gas stream in the blast furnace is so rapid that the carbide formation mixture for the most part is carried away into furnace zones whose temperature is no longer sufficient for carbide formation.
3. Bei Benutzung fertigen Karbides wird bei der Azotierung Wärme frei; es kann also unter Umständen der Kokssatz etwas vermindert oder aber — wie bereits bekannt — zur Kühlung Wasserdampf in den oberen Teil des Ofens geblasen werden, wobei gleichzeitig das entstandene Cyan bezw. Cyanamid in Ammoniak übergeführt wird, soweit es nicht durch sekundäre Reaktionen zersetzt wurde.3. When finished carbide is used, heat is released during azotization; it can so the coke rate may be reduced a little or - as already known - to cool water vapor are blown into the upper part of the furnace, while at the same time the resulting cyan respectively. Cyanamide is converted into ammonia, as long as it is not decomposed by secondary reactions became.
Claims (1)
Publications (1)
Publication Number | Publication Date |
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DE167033C true DE167033C (en) |
Family
ID=432383
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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DENDAT167033D Active DE167033C (en) |
Country Status (1)
Country | Link |
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DE (1) | DE167033C (en) |
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- DE DENDAT167033D patent/DE167033C/de active Active
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