Waste acid recovery process

Details Waste acid recovery process Waste acid recovery process

1990-08-24

1992-01-21

Langel, Wayne A.

Chemistry of inorganic compounds

Sulfur or compound thereof

Oxygen containing

423403, 423404, 423533, 423535, 423540, 423541A, C01B 1750, C01B 1774, C01B 1790

Patent

active

050826450

ABSTRACT:
A process for the recovery of sulphuric acid from a waste acid stream containing ammonium sulphate comprising vaporizing the waste acid and subsequently converting the ammonia and sulphur dioxide generated to nitrogen and sulphur trioxide, respectively. The process provides an economic method for the regeneration of the waste sulphuric acid from a methyl methacrylate production process.

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patent: 4770864 (1988-09-01), Fujimoto et al.
patent: 4781902 (1988-01-01), Schoubye

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