The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 18, 2015
Filed:
Jun. 29, 2012
Ren Zhou, Shanghai, CN;
Rui Huang, Shanghai, CN;
Shanghai Keyontechs Co., Ltd., Fengjing Town, Jinshan Dist., Shanghai, CN;
Abstract
Provided is a method for preparing sulfuric acid by using hydrogen sulfide. The method comprises the following steps: (1) performing a reduction-oxidation reaction between an HS feed gas and oxygen to prepare SO; (2) cooling the product acquired in step (1) to a temperature between 390° C. and 430° C., then performing a catalyzed oxidation reaction with oxygen; and (3) cooling the product acquired in step (2), then further cooling to a temperature between 60° C. and 120° C., collecting HSOproduct. Also provided is a heat exchanger, comprising a housing and several glass pipes arranged within the housing along the direction of a long axis of the housing, arching between two lateral walls thereof; the adjacent glass pipes are connected head-to-tail. The method provides great hydrogen sulfide removal efficiency, simple process flow, and allows for economic efficiency of apparatus and reasonable utilization of energy.