1. The harm of soil smelting
When pyrite is used to sulphur, it produces a strong irritating sulphur dioxide gas, which causes damage to the eyes and respiratory system. When the concentration reaches 8×10 -6 to 20×10 -6 , it causes cough and eye discomfort. When the concentration exceeds 5× At 10 - 4 , it will endanger life. The harm to the environment is also extremely serious. In the smelting area of ​​the soil method, the surrounding farmland and forests are destroyed, and the grass is not born, and the pollution of the exhaust gas seriously damages the natural ecological balance.
Based on the sulfur-smelting technology of Zhenxiong County, Yunnan Province, the environmental protection department of Bijie District of Guizhou Province improved the length, angle, shape, tail gas regulation and grain size and number of layers of the raw materials of the sulfur-smelting equipment. There are new breakthroughs in the governance parts, methods and principles of SO 2 . A closed-type sulphur-smelting new furnace with single furnace smelting, three-stage recovery and concentrated exhaust gas discharge. The new furnace type sulfur smelting achieves the effect of reducing environmental pollution.
The HQL-100 fully enclosed positive-cycle sulphur gas furnace designed by the technicians of Fengjie County Sulfur Plant in Chongqing is a new type of easy-to-operate sulphur-smelting equipment that has been scaled up. The sulfur-smelting method has no waste gas pollution, and greatly reduces the environmental pollution of the smelting sulphur and the harm to the human body.
2. The danger of acid rain to the environment
According to the monitoring of the environmental protection department, 30% of China's land area is covered by acid rain, which poses certain harm to the health of crops and humans and animals. Burning coal, petrochemical industry production process sulfide and sulfur produced during refining is an important cause of acid rain. Sinopec Corp. carried out technical research in the late 1980s. At present, China's sulfur recovery technology and capacity have made great progress, reducing the emission of sulfides, and partially curbing the formation of acid rain.
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