DE499658C - Process for the purification of mineral acids, especially hydrochloric acid - Google Patents
Process for the purification of mineral acids, especially hydrochloric acidInfo
- Publication number
- DE499658C DE499658C DER59064D DER0059064D DE499658C DE 499658 C DE499658 C DE 499658C DE R59064 D DER59064 D DE R59064D DE R0059064 D DER0059064 D DE R0059064D DE 499658 C DE499658 C DE 499658C
- Authority
- DE
- Germany
- Prior art keywords
- hydrochloric acid
- purification
- mineral acids
- especially hydrochloric
- silica gel
- 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
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B7/00—Halogens; Halogen acids
- C01B7/01—Chlorine; Hydrogen chloride
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Silicon Compounds (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Description
Verfahren zur Reinigung von Mineralsäuren, insbesondere Salzsäure In der Patentschrift 477 too und den Zusätzen ,f97 625 und 498 597 sind Verfahren zur Reinigung von Mineralsäuren beschrieben, welche darin bestehen, daß man die Mineralsäuren der Fänwirkung aktiver Kohle aussetzt.Process for the purification of mineral acids, in particular hydrochloric acid In the patent specification 477 too and the additives, f97 625 and 498 597 processes for the purification of mineral acids are described, which consist in exposing the mineral acids to the trapping effect of active charcoal.
Es wurde nun gefunden, daß sich Kieselsäuregel, wie man es z. B. aus Wasserglas durch Behandlung mixt Säuren in bekannter Weise gewinnen kann, in gleich guter Weise für den vorliegenden 7-w-eck eignet. Gegenüber der Verwendung von Kohle bietet das Arbeiten mit Kieselsäuregel noch den Vorteil., daß man die aus den Säuren aufgenommenen Verunreinigungen leicht durch bloßes Erhitzen entfernen kann, ein Waschen mit Wasser und nachfolgendem Trocknen also vermieden werden kann.It has now been found that silica gel, as it is, for. B. off Water glass by treatment mixes acids in a known way can win in the same well suited for the present 7-w-corner. Compared to the use of coal Working with silica gel has the advantage that you can remove the acids ingested impurities can easily be removed simply by heating Washing with water and subsequent drying can therefore be avoided.
Als sehr zweckmäßig hat eis sich auch erwiesen, aktive Kohle und Kieselsäuregel in Kombination miteinander zu verwenden. Handelt es sich z. B. um .dife Reinigung von Salzsäuregasen, so läßt man die Gase zunächst ein Filter mit aktiver Kieselsäure pasisieren, wo außer Arsen auch noch Feuchtigkeit, Schwefelsäuretröpfchen und Schwefeldioxyd zurdckgehalten werden. Die so vorgereinigten Gase passieren nun ein. weiteres mit aktiver Kohle beschicktes Filter, wo ihnen die letzten Reste von Arsen entzogen werden. Alsdann werden sie von reinstem, destilliertem Wasser absorbiert.Ice, active charcoal and silica gel have also proven to be very useful to be used in combination with each other. Is it z. B. to .dife cleaning of hydrochloric acid gases, the gases are first passed through a filter with active silica occur where, in addition to arsenic, there are also moisture, sulfuric acid droplets and sulfur dioxide be held back. The gases pre-cleaned in this way now pass through. further with Filter loaded with active charcoal, where the last remnants of arsenic are removed from them will. Then they are absorbed by the purest, distilled water.
Es ist zwar bekannt, Schwefelsäure und Eisenchlorid aus Salzsäuregasen mit Hilfe von Sandfiltern zu entfernen. Hierbei handelt es sich jedoch lediglich um eine mechanische Reinigung der Gase, während das auf künstlichem Wege hergestellte Kieselsäuregel ein auswählendes Absorptionsvermögen besitzt und als geeignet befunden wurde, den Selen-und Arsengehalt der Salzsäuregasie aus denselben zu entfernen.Although it is known to produce sulfuric acid and ferric chloride from hydrochloric acid gases remove with the help of sand filters. However, this is only a matter of a mechanical purification of the gases, while that produced by artificial means Silica gel has selective absorbency and has been found suitable was to remove the selenium and arsenic content of the hydrochloric acid gas from them.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DER59064D DE499658C (en) | 1923-07-31 | 1923-07-31 | Process for the purification of mineral acids, especially hydrochloric acid |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DER59064D DE499658C (en) | 1923-07-31 | 1923-07-31 | Process for the purification of mineral acids, especially hydrochloric acid |
Publications (1)
Publication Number | Publication Date |
---|---|
DE499658C true DE499658C (en) | 1930-06-12 |
Family
ID=7410968
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DER59064D Expired DE499658C (en) | 1923-07-31 | 1923-07-31 | Process for the purification of mineral acids, especially hydrochloric acid |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE499658C (en) |
-
1923
- 1923-07-31 DE DER59064D patent/DE499658C/en not_active Expired
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