如今，随着经济的快速发展，人口的增加提高了人们对生活水平的要求，生活垃圾日益增多，已经成为城市的一个长期污染源。它不仅侵占了大量的土地，如果处理不当，还会造成空气污染、土壤污染和水污染。
Nowadays, with the rapid development of economy and the increase of population, people's demand for living standard is improved. Domestic waste is increasing day by day, which has become a long-term pollution source of the city. It not only occupies a lot of land, but also causes air pollution, soil pollution and water pollution if it is not handled properly.
如何变废为宝，形成可再生能源已成为亟待解决的问题，从而形成垃圾焚烧发电技术。然而，垃圾焚烧过程中产生的烟气处理是一个值得思考的难题。在国家垃圾焚烧政策的支持下，将进入一个黄金发展时期。相关政策和国家污染控制标准也将对垃圾焚烧污染控制提出更高的要求。提高公众的环境意识和权利意识，提高垃圾焚烧厂的技术水平，特别是山东烟气处理技术。
How to turn waste into treasure and form renewable energy has become an urgent problem to be solved, thus forming waste incineration power generation technology. However, the treatment of flue gas generated in the process of waste incineration is a problem worthy of consideration. With the support of the national waste incineration policy, it will enter a golden period of development. Relevant policies and national pollution control standards will also put forward higher requirements for waste incineration pollution control. Improve the environmental awareness and rights awareness of the public, and improve the technical level of waste incineration plants, especially the flue gas treatment technology in Shandong Province.
烟气处理技术主要指脱硫。石灰石——石膏脱硫工艺是世界上应用最广泛的脱硫技术。日本、德国和美国火电厂使用的烟气脱硫装置中，约有90%采用这种工艺。其工作原理是：石灰石粉加水制成浆液，浆液作为吸收剂泵入吸收塔，与烟气充分接触混合；烟气中的二氧化硫和浆液中的碳酸钙以及从塔下部吹出的空气发生氧化反应生成硫酸钙；硫酸钙达到一定饱和度后，硫酸钙结晶形成二水石膏。
Flue gas treatment technology mainly refers to desulfurization. Limestone gypsum desulfurization process is the most widely used desulfurization technology in the world. About 90% of the flue gas desulfurization devices used in thermal power plants in Japan, Germany and the United States adopt this process. Its working principle is: limestone powder is made into slurry by adding water, slurry is pumped into the absorption tower as absorbent, and is fully mixed with flue gas; sulfur dioxide in flue gas reacts with calcium carbonate in slurry and air blown out from the lower part of tower to produce calcium sulfate; after calcium sulfate reaches a certain saturation, calcium sulfate crystallizes to form gypsum dihydrate.
吸收塔排出的石膏浆液经浓缩脱水，使其含水量小于10%，然后由输送机输送至石膏料仓堆放。脱硫后的烟气通过除雾器去除雾滴，然后由换热器加热，再由烟囱排入大气。由于吸收塔中的吸收剂浆液通过循环泵与烟气反复循环接触，吸收剂利用率很高，钙和硫相对较低，脱硫效率可达95%以上。
The gypsum slurry discharged from the absorption tower is concentrated and dehydrated to make its water content less than 10%, and then transported by conveyor to the gypsum silo for stacking. The desulfurized flue gas is removed by mist eliminator, heated by heat exchanger and discharged into the atmosphere by chimney. Because the absorbent slurry in the absorption tower repeatedly circulates with the flue gas through the circulating pump, the utilization rate of absorbent is very high, the calcium and sulfur are relatively low, and the desulfurization efficiency can reach more than 95%.
高温烟气除尘的关键在于滤袋的选择。滤袋中使用的聚四氟乙烯过滤材料是热定形的，用聚四氟乙烯浸渍后，在纤维表面和交叉点形成聚四氟乙烯保护膜，因此可以很容易地除去灰尘。同时，滤袋表面经过防水防油处理，使过滤材料具有优异的耐酸、耐碱腐蚀和水解稳定性。滤袋有足够的强度来承受滤袋的额外负荷和积聚的灰尘。当除尘器清理灰尘时，脉冲喷射阀定期启动，使滤袋径向变形并抖落灰尘。除尘器过滤未反应的脱硫剂，压缩空气将未反应的脱硫剂吹回到脱硫塔，从而提高脱硫剂的有效利用率。
The key of high temperature flue gas dust removal is the selection of filter bag. The polytetrafluoroethylene filter material used in the filter bag is heat setting. After being impregnated with polytetrafluoroethylene, a polytetrafluoroethylene protective film is formed on the surface and intersection of the fibers, so the dust can be easily removed. At the same time, the surface of the filter bag is treated with waterproof and oil proof, so that the filter material has excellent acid resistance, alkali corrosion resistance and hydrolysis stability. The filter bag has enough strength to bear the extra load of the filter bag and the accumulated dust. When the dust collector cleans up the dust, the pulse jet valve starts regularly to make the filter bag radial deformation and shake off the dust. The dust collector filters the unreacted desulfurizer, and the compressed air blows the unreacted desulfurizer back to the desulfurization tower, so as to improve the effective utilization rate of desulfurizer.
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