| At present, coal as the main primary energy in China determines the principal position of coal-fired thermal power industry.The resulting coal-fired pollution has been the focus of China's environmental pollution and the emission control of SOx is an important part of reducing burning pollution. While the wet flue gas desulfurization with its mature technology, high efficiency in coal-fired power plant is widely used. A large number of solid industrial waste accumulate and pollute the surrounding environment, if it is used to desulphurize, not only can reduce environmental pollution caused by waste accumulation, but also can reduce the desulfurization costs,. Environmental benefits and economic benefits are considerable. Therefore, the paper base industrial waste liquid column tower for flue gas desulfurization were studied.Flue gas desulfurization tower liquid column as a new flue gas desulphurization technology has developed rapidly in recent years. It is characterized by gas-liquid mass transfer for the full, efficient in scaling the possibility of small, simple structure, low investment, easy maintenance and control, stable and reliable. But this project is still in experimental stage, on the base of industrial waste liquid column tower for flue gas desulfurization research has no systematic study, this paper design and construct the liquid column tower of the wet FGD pilot to study the this project.This paper selects several typical industrial sectors in Shandong Province's industrial waste, including SiO2, Al2O3, Fe2O3, Na+, Cl+, etc. in varying amounts in order to study the components of the desulfurization characteristics. This article selected test materials, including salt mud of LiaoCheng fertilizer plant, salt mud of Qilu petrochemical chlor-alkali plant, pak nai of Quan Lin Zhi Ye, gas plant residue of Zhang Qiu Anguo, residue of Zibo dry Cheng, chemical Linfen purine residue, Shandong Aluminum Company of sintering of red mud, Shandong Aluminum Company of Bayer Red Mud and the letter made aluminum mud, and select Linyi Rossi flour milling limestone as contrast material.First, the article do chemical analysis of the test taken from the chemical composition of materials. CaO content of experimental materials according to the level of the determined test using only the CaO content of more than 30% of the tested materials were XRD diffraction analysis of phase composition. Analysis:carbide, limestone, Pak Nai, the salt mud and red mud to CaCO3, Ca(OH)2, and Mg(OH)2 exists in the form of calcium and magnesium can participate in the desulfurization, and red mud exists in the form of calcium to Ca2SiO4 not involved in desulfurization. Before and after several desulfurization not exist and produce toxic substances. Study suggests that: experimental industrial waste residue, white clay, salt, mud and red mud can be applied as a wet desulfurization agent.Second, the article filter out as a wet desulfurization waste for the liquid column tower desulfurization, and the desulfurization characteristics were studied. Considering theindustrial waste for wet FGD system environment and the characteristics of the tower wind speed, liquid gas ratio, slurry pH were studied on their effect of desulfurization to determine the best operating parameters. The results showed that:in the study area, the tower in the best wind speed 2.7m/s or so, the proposed slag, salt, mud, mud, Pak Nai and limestone liquid to gas ratio between 16L/m3-17L/m3, pH values of 8-10, 6.5-7.5,7.5-9,5.5-6 and between 5.5-6 is the best.Finally, this paper do research on the desulfurization of the industrial waste and mixed limestone. The results showed that:Pak Nai no significant effect on the limestone wet FGD; carbide, salt mud and red mud are not suitable for wet desulfurization with limestone; salt mud and red mud should not be mixed with the carbide for desulfurization; red mud mud mixed with salt ratio for desulfurization, and the optimal ratio is 7:3. Analysis:Ca(OH)2, SiO2, and Cl-in the presence of obstruction CaCO3 ionization, making mixed desulfurization efficiency decreased; Mg2+and Fe2O3 can improve the limestone desulfurization efficiency.
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