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Expired
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GB18091/31A
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Individual
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Individual
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Publication of GB390125ApublicationCriticalpatent/GB390125A/en
C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
C01B17/00—Sulfur; Compounds thereof
C01B17/69—Sulfur trioxide; Sulfuric acid
C01B17/90—Separation; Purification
C01B17/92—Recovery from acid tar or the like, e.g. alkylation acids
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Chemical & Material Sciences
(AREA)
Organic Chemistry
(AREA)
Inorganic Chemistry
(AREA)
Removal Of Specific Substances
(AREA)
Abstract
In recovering sulphuric acid in acid waste liquors from the refining of oils &c. as claimed in the parent Specification, the waste acid liquors are concentrated by direct treatment with steam. The waste acid liquors may be preliminarily diluted before the said treatment to reduce the violence of the reaction. The treatment with steam results in an almost complete separation of impurities in the oleaginous or solid form and after filtration the resulting acid may be concentrated to 90-98 per cent.
GB18091/31A1930-06-211931-06-22Process for the recovery of sulphuric acid
ExpiredGB390125A
(en)
An improved process for converting high-boiling hydrocarbons, which have been freed from the substances soluble in liquid sulphurous acid, into low-boiling hydrocarbons by means of aluminium chloride