High-concentration SO2 exhaust gas temperature control converter and application processes thereof

Abstract

The invention discloses a high-concentration SO2 exhaust gas temperature control converter and application processes thereof. The temperature control converter comprises a cuboid shell and supports of the shell, the shell is internally provided with a catalyst layer and porcelain ball layers, the porcelain ball layers are arranged on the two sides of the catalyst layer correspondingly, heat exchange tubes are embedded in the catalyst layer, a low-temperature gas inlet, a low-temperature gas outlet, a high-temperature gas inlet and a high-temperature gas outlet are formed in the side walls of the shell, low-temperature gas flows through a heat exchange tube bundle, a heat exchange area can be ensured through the reasonable number of the heat exchange tubes, high-concentration SO2 exhaust gas flows through porcelain ball areas and a catalyst area, the high-temperature gas and the low-temperature gas flow crosswise to perform heat exchanging, the heat exchange tubes are embedded in the catalyst layer, the catalyst filling amount is greatly increased, the high-temperature gas enters a catalyst to be converted, and it is ensured that the catalyst temperature reacts under the most proper conversion temperature. The three application processes of the temperature control converter can meet the demand for double-layer fluctuations of the concentration and amount of the smelting exhaust gas, and the total SO2 conversion rate can be kept at the high level of 99.75% to 99.95 %. The three processes have respective advantages, and can be selected according to practical situations.

Description

technical field [0001] The invention relates to a contact sulfuric acid conversion system, in particular to a high-concentration SO 2 Flue gas temperature-controlled conversion reactor and its application process. Background technique [0002] With the continuous development of non-ferrous smelting industry towards oxygen-enriched smelting and blowing, SO 2 The concentration is getting higher and higher, up to more than 30% (v%). Its supporting flue gas acid production process is also gradually moving towards high concentration SO 2 The direction of acid production is developing, and the following typical high-concentration SO 2 Flue gas acid production process. The technologies adopted by foreign companies mainly include: 1. Outotec's LUREC cyclic conversion process; 2. Mengmoke's "pre-conversion process"; 3. Bayqik's high-concentration sulfur dioxide flue gas acid production process of Bayer Technologies. For the Bayqik process of Bayer Technology Company, Yixing Chem...

AI Technical Summary

Problems solved by technology

Then the two core problems that this process needs to overcome are: 1. How to conveniently carry out large-scale production of this converter; 2. How to reduce the amount of flue gas that this converter needs to pass through from the conversion process flow

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