Desulfurization in power plants has registered attention, and environmental purification is urgent

With the acceleration of industrialization, the rapid development of the power industry has brought environmental problems. Among them, the desulfurization problem of coal-fired power plants is particularly prominent. The emissions of pollutants such as sulfur dioxide (SO2) from coal-fired power plants pose a threat to the environment and human health. Therefore, desulfurization in power plants has become one of the focuses of attention in the environmental protection community.

Desulfurization technology is the key to solving the problem of sulfur dioxide emissions in power plants. At present, various desulfurization technologies have been mastered, including wet desulfurization, dry desulfurization, semi dry desulfurization, etc. These technologies have their own advantages and disadvantages in terms of desulfurization efficiency and environmental investment. The following are several common desulfurization technologies:

1. Wet desulfurization: wet desulfurization technology uses spray absorbent to contact with sulfur dioxide gas to achieve desulfurization. The most commonly used method is the limestone gypsum method. This technology has high desulfurization efficiency, but requires significant equipment investment and operating costs.

2. Dry desulfurization: Dry desulfurization technology achieves desulfurization by spraying powdered absorbent to cause a chemical reaction between sulfur dioxide and the absorbent. Typical dry desulfurization technologies include desulfurizer injection method and circulating fluidized bed desulfurization method. Dry desulfurization equipment is simple and has low operating costs, but the desulfurization efficiency is affected by absorbents and process conditions.

3. Semi dry desulfurization: Semi dry desulfurization technology combines the advantages of wet and dry desulfurization, using jet slurry absorbent to ensure desulfurization efficiency and reduce operating costs. Semi dry desulfurization is suitable for small and medium-sized boilers and thermal power plants.

4. Activated carbon adsorption method: The activated carbon adsorption method utilizes the high adsorption performance of activated carbon to adsorb and remove sulfur dioxide. This method has the advantages of high desulfurization efficiency and simple equipment, but frequent regeneration of activated carbon and high operating costs.

5. Desulfurizer: Desulfurizer is a chemical substance used for desulfurization. Common desulfurizers include calcium hydroxide, calcium oxide, ammonia water, etc. The selection of desulfurizers should be based on the type of boiler, fuel composition, and desulfurization requirements.

In short, desulfurization in power plants has once again attracted attention, and environmental protection is urgent. In order to reduce the impact of sulfur dioxide emissions on the environment and human health, it is necessary to continue to increase research and promotion of desulfurization technology, improve the operational efficiency of desulfurization facilities, and achieve sustainable development of the power industry. At the same time, it is necessary to strengthen the research and application of desulfurizers, improve desulfurization efficiency, and reduce operating costs.