System and method for preparing H2SO4 from sulfur-containing waste

The invention relates to a system for preparing H2SO4 from sulfur-containing waste. The system comprises a pretreatment unit; the pretreatment unit comprises a drying machine and a tail gas washing and recycling system; the drying machine comprises a barrel and a rotating shaft; a heating medium is...

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Bibliographic Details
Main Authors XIANG YUQIAO, ZHAO CHUANJUN
Format Patent
LanguageChinese
English
Published 26.02.2021
Subjects
AMMONIA
CHEMISTRY
COMPOUNDS THEREOF
CYANOGEN
INORGANIC CHEMISTRY
METALLURGY
NON-METALLIC ELEMENTS
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Summary:The invention relates to a system for preparing H2SO4 from sulfur-containing waste. The system comprises a pretreatment unit; the pretreatment unit comprises a drying machine and a tail gas washing and recycling system; the drying machine comprises a barrel and a rotating shaft; a heating medium is introduced into at least the barrel or the rotating shaft; the rotating shaft can be driven to rotate to stir the sulfur-containing waste in the barrel; the tail gas washing and recycling system comprises a washing device, a pickling device and a tail gas washing device; the washing device is used for washing and cooling tail gas exhausted by the drying machine, the gas inflow end of the washing device is connected with a tail gas exhaust port of the drying machine, and a part of washing mixed liquid generated by tail gas washing is filtered and then supplied to a feeding port of the drying machine; the pickling device is connected with a gas outlet of the washing device and used for neutralizing ammonia in the was
Bibliography:Application Number: CN202011246557