Sulfur-air fuel cell and its application in sulfuric acid production

An air fuel cell, fuel cell technology, applied in fuel cells, electrochemical generators, circuits, etc., can solve the problems of undiscovered sulfur-air fuel cells, etc., and achieve obvious environmental protection effects, reduce production costs, and save energy. Effect

Inactive Publication Date: 2006-07-19
ANHUI NENGHUA FUEL CELL
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  • Abstract
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  • Claims
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Problems solved by technology

According to the literature search, no relevant literature reports on sulfur-air fuel cells and the application of the battery in sulfuric acid production have been found, nor have they been used in actual industrial production.

Method used

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  • Sulfur-air fuel cell and its application in sulfuric acid production

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Embodiment Construction

[0019] As shown in the accompanying drawing of the manual, it is equipped with a sulfur-air fuel cell, and the positive electrode of the battery is YMnO mixed with 20% silver powder. 3 The material is composed of pressed tablets, and the solid electrolyte is made of perovskite structure La 0.8 Sr 0.2 GaO 2.9 Material composition, the negative electrode of the battery is doped with 45% LaCrO 3 YSZ (yttria stabilized zirconia) material pellets. Battery negative lead into S (g) , the partial pressure is 110kPa, the flow rate is 10cm 3 / min; the positive electrode of the battery is fed with air, the pressure is 100kPa, the oxygen partial pressure is 21kPa, and the air flow rate is 500cm 3 / min; the working temperature of the battery is 500°C. The battery output voltage is 0.9V.

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Abstract

The invention relates to a sulfur-air fuel battery and the application in the vitriol production, belonging to the chemical energy-saving producing technique. The structure of said invention is the same with solid oxide hydrogen-oxygen fuel battery. The cathode of said battery can use the electric chemical method to oxygenate the gas S into SO3 and transform the chemical energy into electric energy. The oxygenation of sulfur is processed in the battery sealed system without discharging waste gas. The invention can be used as the synthesizer to use sulfur to produce vitriol in the vitriol industry production, to combine the vitriol production, chemical discharge and environment protection.

Description

Technical field: [0001] The invention belongs to the technical field of energy saving in chemical production, and in particular relates to a sulfur-air fuel cell and its application in sulfuric acid production. Background technique: [0002] Sulfuric acid is a chemical product with a wide range of uses. In recent years, the output of sulfuric acid produced from sulfur has increased year by year. At present, the method of producing sulfuric acid from sulfur is basically the same as the method of producing sulfuric acid from pyrite, both of which are roasted with air to generate SO 2 , and then use air to further oxidize SO at a vanadium catalyst and a temperature of 425-600 °C 2 Cheng SO 3 , followed by SO absorption with dilute sulfuric acid 3 This produces concentrated sulfuric acid. In order to improve the utilization rate of sulfur and reduce environmental pollution, it is necessary to carry out the process of two rotations and two suctions, which is an extremely com...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/00C01B17/74
CPCY02E60/50Y02P70/50
Inventor 朱伟长
Owner ANHUI NENGHUA FUEL CELL
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