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Related introduction of electrostatic precipitator: China's electrostatic precipitator technology has matured, and its primary level has entered the international advanced ranks.
Related introduction of electrostatic precipitator: 1. Vocational skill level and characteristics
The level and characteristics of vocational skills are mainly reflected in the following aspects:
生物纳米膜为双层电离层膜，层间距达到纳米级. 它能最大限度地添加水分子，具有较强的电荷吸附性. 将生物纳米薄膜喷涂在材料表面，可以吸引和聚集小颗粒粉尘，使其聚集成大颗粒粉尘颗粒，并通过自重添加和沉降. (1) Incorporate the dust suppression of bio-nano film into the "Air Pollution Control Advanced Technology Collection" issued by the Ministry of Science and Technology and the Ministry of Environmental Protection . Has strong charge adsorption. Spraying the bio-nano film on the surface of the material can attract and aggregate small particles of dust, aggregate them into large particles of dust, and add and settle by their own weight.
云雾抑尘技术是通过高压离子雾化和超声波雾化，可以产生1 μm至100 μm的超细干雾. 超细干雾颗粒细小，与粉尘颗粒的接触面积充分增加. 雾状粒子与尘埃粒子碰撞凝聚形成聚集物. 聚集物不断变大变重，直到最后自然沉降，达到除尘的目的. (2) Incorporating cloud and dust control into the "Advanced Technology of Air Pollution Prevention and Control" compiled by the Ministry of Science and Technology and the Ministry of Environmental Protection The ultra-fine dry mist particles are small, and the contact area with dust particles is fully increased. The mist particles and dust particles collide and condense to form aggregates. The aggregates become larger and heavier until they finally settle naturally and achieve the purpose of dust removal.
(3) Wet dust removal is included in the "Compilation of Advanced Technologies for Air Pollution Prevention" issued by the Ministry of Science and Technology and the Ministry of Environmental Protection
Wet dust removal technology is under the dual effect of centrifugal force and water and dust gas to absorb dust-containing air and remove dust through pressure drop. Key plans such as ordinary impellers can provide higher dust removal capabilities.
(4) The electrostatic dedusting technology is in the mature application stage, but the emission concentration is difficult to meet the requirements of the new control specifications
Related introduction of electrostatic precipitator: At present, China's electrostatic precipitator technology has been developed, and the first-level skills have entered the international advanced ranks.
The application of electrostatic dedusting technology in high-temperature flue gas dedusting management in thermal power plants and other fields is more mature. Due to the limitation of the dust removal mechanism, it has been difficult to make great progress in the dust removal ability of electrostatic dust removal technology. Newly built electrostatic dust removal systems can generally control the emission concentration at about 100 mg / m3. The change of the specific resistance of smoke and dust has a great impact on the dust removal ability. In practice, the uncertainty of fuel combustion causes the working condition smoke parameters to violate planned values, and the smoke emission concentration is often much higher than the planned emission control value. With the continuous improvement of the country's requirements for smoke pollution control and the increasingly strict requirements for fine dust emissions, electrostatic precipitator technology is facing severe challenges.
(5) Bag-type dust removal technology is in the rapid development stage
Compared with electrostatic dedusting technology, bag dust removal technology started late. After the introduction of foreign advanced technology and digestion and absorption, China's bag-type dust removal technology has made great progress. Various bag-type dust removal technologies have become more advanced, complete, and thorough. Filter material technology, dust removal technology, accessories, etc. have gradually formed industrial planning. Part The performance of bag dust removal equipment has reached the international advanced level. After the bag-type dust removal and filtration, the dust-containing exhaust gas emission concentration can reach 5 mg / m3, the capital cost and operation and maintenance costs are gradually reduced, and the service life of the filter bag is continuously extended. With the continuous improvement of China's flue gas pollution control requirements, bag dust removal technology has been more and more widely used, and is in a rapid development stage.
(6) Technology of electric bag changing and electric compound bags is expanding
With the continuous improvement of the country's requirements for industrial flue gas pollution control, electrostatic precipitator technology is facing severe challenges. Some enterprises that used electrostatic precipitator equipment had to change their electrostatic precipitator equipment to bag type precipitator equipment because they could not meet the discharge requirements. This method is simply referred to as "electric bag replacement". In summary, considering that China's existing high-temperature industrial flue gas dust removal equipment mostly uses electrostatic dust removal equipment, and the existing initial investment is relatively large, some domestic dust removal equipment host manufacturers The company chose the "electric bag composite dust removal" technology to transform the back end of the original electrostatic dust removal equipment into a bag type dust collector and change the electrostatic dust removal to "electric bag composite dust removal".
Related introduction of electrostatic precipitator: Professional and unique operation form
Bag type dust collector is the core equipment of the dust removal system. The system planning and configuration are professional, and the customer needs a high degree of personalization. Generally, the system needs to be customized for specific applications. Professional production companies generally obtain orders through tendering, and arrange product planning, production, installation and commissioning according to user needs. The production enterprise is mainly responsible for the planning and production of the central parts, and the supporting parts are acquired through the acquisition of professional manufacturers. The manufacturer assembles various central parts and accessories into products according to the requirements of the order. In this form, the production of core components is carried out by the production and business departments, which can ensure the control of skills and techniques, and implement strict quality control procedures in accordance with higher quality standards. Product quality can be effectively guaranteed, but due to the capacity of Restrictions, the acceptance of orders can only be limited to a certain extent.
3. Occupational periodic, regional or seasonal characteristics
With the improvement of national environmental protection requirements, the application demand of bag-type dust removal equipment is constantly expanding. The industry is currently in a period of stable development, with outstanding growth momentum and no obvious cyclical characteristics. As an effective means of controlling dust emissions, bag filters are widely used in more than 20 industries such as cement, steel, non-ferrous metals, electricity, machinery, chemical industry and municipal administration. 48. The cycles of various downstream industries are not completely consistent, to a certain extent It can eliminate the operational shock of the industry, and the cyclical shock of some downstream industries has little impact on the market demand for bag dust removal equipment.
Related recommendation: precautions for using electrostatic precipitator
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