DE533232C - Disarming of combustible contact poisons contained in roast gases or the like, in particular arsine - Google Patents
Disarming of combustible contact poisons contained in roast gases or the like, in particular arsineInfo
- Publication number
- DE533232C DE533232C DEM108640D DEM0108640D DE533232C DE 533232 C DE533232 C DE 533232C DE M108640 D DEM108640 D DE M108640D DE M0108640 D DEM0108640 D DE M0108640D DE 533232 C DE533232 C DE 533232C
- Authority
- DE
- Germany
- Prior art keywords
- arsine
- gases
- combustible
- disarming
- contact poisons
- 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
- 239000007789 gas Substances 0.000 title claims description 12
- RBFQJDQYXXHULB-UHFFFAOYSA-N arsane Chemical compound [AsH3] RBFQJDQYXXHULB-UHFFFAOYSA-N 0.000 title claims description 8
- 231100000614 poison Toxicity 0.000 title claims description 5
- 238000009877 rendering Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 claims 1
- 238000000926 separation method Methods 0.000 claims 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 4
- 229910052785 arsenic Inorganic materials 0.000 description 3
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 description 3
- HJTAZXHBEBIQQX-UHFFFAOYSA-N 1,5-bis(chloromethyl)naphthalene Chemical compound C1=CC=C2C(CCl)=CC=CC2=C1CCl HJTAZXHBEBIQQX-UHFFFAOYSA-N 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- GOLCXWYRSKYTSP-UHFFFAOYSA-N arsenic trioxide Inorganic materials O1[As]2O[As]1O2 GOLCXWYRSKYTSP-UHFFFAOYSA-N 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B17/00—Sulfur; Compounds thereof
- C01B17/48—Sulfur dioxide; Sulfurous acid
- C01B17/50—Preparation of sulfur dioxide
- C01B17/56—Separation; Purification
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
Description
Unschädlichmachung von in Röstgasen o. dgl. enthaltenden verbrennlichen Kontaktgiften, insbesondere Arsenwasserstoff Bei der Abröstung von Sulfiden, z. B. von Zinkblenden auf Dwight-Lloyd-Sinteranlagen u. dgl., muß mit der Möglichkeit gerechnet werden, daß Kontaktgifte entstehen, z. B. Arsenwasserstoff. Die Bildung z. B. von Arsenwasserstoff ist darauf zurückzuführen, daß Schwefelsäure, die sich in den Rohrleitungen aus den stark wasserhaltigen Gasen nach Verlassendes Röstapparates bildet, auf das Eisen der Rohre unter Wasserstoffentwicklung einwirkt. Der entstehende Wasserstoff reduziert in den Gasen enthaltenes Arsentrioxyd und bildet mit elementarem Arsen unter den herrschenden Temperaturbedingungen Arsenwasserstoff. Dieser läßt sich nach erfolgter Abkühlung der Gase in keiner Weise beseitigen, sondern kommt durch Verbrennung in der Kontaktsubstanz schädlich zur Geltung.Rendering harmless combustibles contained in roasting gases or the like Contact poisons, especially arsine. B. of zinc blends on Dwight-Lloyd sintering plants and the like, must be possible be expected that contact poisons arise, z. B. arsine. The education z. B. of arsine is due to the fact that sulfuric acid, which in the pipelines from the gases with a high water content after leaving the roaster forms, on the iron of the pipes acts with evolution of hydrogen. The emerging Hydrogen reduces arsenic trioxide contained in the gases and forms with elemental Arsenic under the prevailing temperature conditions arsine. This leaves After the gases have cooled down, they do not eliminate themselves in any way, but come harmful through combustion in the contact substance.
Diese störenden Bestandteile des Gases werden gemäß Erfindung dadurch beseitigt, daß man das arsenwasserstoffhaltige Gas eines Dwight-Lloyd-Apparates in einen mechanischen Röstofen oder einen anderen metallurgischen Ofen führt, der entweder zur Vorröstung des Verblasegutes, das auf dem Dwightapparat fertiggeröstet werden soll, oder irgendeinem anderen Zweck dient. Arsenwasserstoff z. B. wird hier bei der hohen Temperatur, die in dem betreffenden Ofen herrscht, verbrannt. Das Gas enthält das Arsen dann wieder als Arsentrioxyd, das rest= los vor Eintritt in den Kontaktapparat durch allgemein bekannte Mittel niedergeschlagen werden kann.According to the invention, these interfering components of the gas are thereby eliminated eliminates the need to use the arsenic-containing gas from a Dwight-Lloyd apparatus into a mechanical roasting furnace or other metallurgical furnace that either for the pre-roasting of the blown material, which is ready-roasted on the Dwight apparatus or any other purpose. Arsine e.g. B. is here burned at the high temperature prevailing in the furnace in question. That Gas then contains the arsenic again as arsenic trioxide, the rest = los before entering the contact apparatus can be knocked down by well known means.
Um eine Rückbildung zu Arsenwasserstoff zu verhüten, ist es notwendig, auf dem weiteren Weg der Gase Bedingungen zu schaffen, die eine Kondensationsmöglichkeit neuer Schwefelsäure bzw. deren Angriff auf Eisen unmöglich machen. Z. B. kann dies durch Einhaltung einer geeigneten Temperatur in den Rohren oder dadurch geschehen, daß man die Leitungen im Innern mit einem Futter aus säurefestem Chamottematerial versieht.To prevent a reversion to arsine, it is necessary to on the further path of the gases to create conditions that allow condensation make new sulfuric acid or its attack on iron impossible. For example, this can by maintaining a suitable temperature in the pipes or by doing so, that the lines inside with a lining made of acid-proof chamotte material provides.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEM108640D DE533232C (en) | 1929-02-02 | 1929-02-02 | Disarming of combustible contact poisons contained in roast gases or the like, in particular arsine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEM108640D DE533232C (en) | 1929-02-02 | 1929-02-02 | Disarming of combustible contact poisons contained in roast gases or the like, in particular arsine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE533232C true DE533232C (en) | 1931-09-10 |
Family
ID=7326486
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DEM108640D Expired DE533232C (en) | 1929-02-02 | 1929-02-02 | Disarming of combustible contact poisons contained in roast gases or the like, in particular arsine |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE533232C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1043295B (en) * | 1956-12-07 | 1958-11-13 | Basf Ag | Process for the production of gases containing sulfur dioxide by fluidized bed roasting of rustable sulfur in addition to materials containing arsenic and / or antimony |
-
1929
- 1929-02-02 DE DEM108640D patent/DE533232C/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1043295B (en) * | 1956-12-07 | 1958-11-13 | Basf Ag | Process for the production of gases containing sulfur dioxide by fluidized bed roasting of rustable sulfur in addition to materials containing arsenic and / or antimony |
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