On April 4, 2019, the mandatory national standard Minimum allowable values of energy efficiency and energy efficiency grades for precipitator (GB 37484-2019) was issued and was implemented on March 1st, 2019. Put forward by BDRC, this standard was developed under the guidance of SAC/TC 275 and is in the charge of SAC/TC 20.
The State Council issued the Three-year Action Plan to make the sky blue again on July 3, 2018, proposing to carry out air pollution prevention and control. It was also noted that China needs to make use of economic, legal, technical and necessary administrative means to make the sky blue again, so as to benefit the environment, economy and society. Electrostatic precipitators, bag filters and electrostatic-fabric integrated precipitators will play an important role in the action plan, as all of them are traditional major tools that can eliminate industrial dust. Electrostatic precipitators remain the main tool because they can effectively deal with large amounts of smoke and dust, have a wide range of applications, low resistance, are reliable, simple and easy to operate, and emit no secondary pollutants. Bag filters can remove particulate matter effectively, significantly reduce smoke and dust emissions, and perform well in collecting fine particles smaller than PM2.5. Electrostatic-fabric integrated precipitators can remove toxic and harmful substances such as mercury and dioxins and not be affected by dust. Having the advantages of both electrostatic precipitators and bag filters, electrostatic-fabric integrated precipitators can help to keep emissions low, save energy and lower maintenance costs for a long term. At present, progress has been made in air pollution control technology, which means the requirements for the energy saving levels of dusters are also higher.
Minimum allowable values of energy efficiency and energy efficiency grades for precipitator (GB 37484-2019) is the first efficiency standard for environmental protection air pollution control tools in China. It includes energy efficiency grades, minimum allowable values of energy efficiency and testing methods of energy efficiency, and has been adopted for dry electrostatic precipitators of flue gas dust removal for coal fired power plant boilers, bag filters of flue gas dust removal for coal fired boilers in the electrical industry, bag filters of flue gas dust removal for new dry-type cement rotary kiln flue gas of house decoration, bag filters of semi-dry flue gas desulphurization in the steel industry, and fabric integrated precipitators for coal fired power plant boilers and the smoke of cement rotary kilns.
This standard will help promote the energy efficiency of electrostatic precipitators, bag filters and electrostatic-fabric integrated precipitators, facilitating energy-saving technologies for enterprises, which is beneficial for energy-saving management, realizing higher market competitiveness and better technology. In addition, this standard is consistent with other standards such as precipitator quality standard, performance test method standard and safety standard, which will constitute an organic and scientific system with interconnected standards. It will not only benefit China to prevent and control pollution, but will also play a key role in the management of energy saving and emission reduction in major industries.