Study On The Craft And Antisepsis About Jet Bubbling Flue Gas Dust Removal And Desulphurization Cleaner

The combustion process of sulphur containing fossil fuels such as coal and oil produces sulphur dioxide (SO₂). It is well known that SO₂ has detrimental effects on human health and the environment, so many countries have carried out research on desulphurization.Since 1987, the Artificial Environmental Research Institute of the Lanzhou University of Technology has developed Jet Bubbling Reactor (JBR). It's a type of high-efficient dust removal and desulphurization purifying equipment. The JBR has high desulphurization efficiency, low system operational resistance and simple structure. But we found the corrosion of the system is serious during the application period, in order to solve the problem, I got Gansu Provincial Natural Science sustentation fund in Oct. 2004.In order to solve the corrosion problem, some measures are taken as follows: Firstly, optimize the desulphurization craft, a gas-gas-heated exchanger (GGH) is added before the flue gas entered the JBR. On the one hand, it can decrease the gas's temperature, to avoid the limestone serosity vaporizes under high temperature;on the other hand to upgrade the flue's temperature which release from the chimney, then it can avoid the dew point corrosion of the chimney.In order to reduce expenses, antisepsis experiments with spread flake are done firstly, and then apply it on the equipment. Spread the vinyl ester glass flake mortar (VEGF) on the inner surface of the system includes GGH, entrance pipe, JBR exit pipe and chimney etc. According the temperature and the pH, the different parts are painted in different thickness. We can find that the VEGF can protect the instrument effectively in both high temperature and acid condition.Through the optimizing design, a conclusion can be drawn that the antisepsis is successful. The efficiency of the desulphurization and the influence factor after optimization is tested, the desulphurizing efficiency can reach as high as to 90%, dust removal efficiency can reach 98%. Besides, JBR's costs is low, so it can be used in both boiler for industry and life, it is worthy of popularizing.