Rare earth polishing powder waste toner on the absorption properties
With the rapid economic development, China's sulfur dioxide emissions into the atmosphere so that air quality deterioration, acid rain damage increase, SO2 emissions on the human living environment had a tremendous threat. This paper analyzes the current situation of air pollution, SO2 and other hazards; on the various types of flue gas desulfurization technology profiles are reviewed and analyzed and compared the advantages and disadvantages of various desulfurization methods.
Everbeen magnets supply you the rare earth magnets such as neodymium magnets,ceramic magnets,which is the strong magnets and permanent magnets.and rubber magnets,fridge magnets,Refrigerator Magnets etc.
Xiamen Everbeen Magnet Electron Co.,Ltd. http://www.chinamagnets.biz
Add:Unit H, 4F Rihua Mansion, No. 8 Xinfeng 2nd road, Torch Hi-Tech Zone, Xiamen, China.
Tel:0086-592-5781916
Fax:0086-592-5123653
E-mail:sales@china-magnet.net
At present, rare earth polishing powder Feifen as a solid waste pile base, no effective management and utilization, resulting in the pollution of the surrounding environment. In the study it can be resource utilization features, be sure to carry out its analysis of possible hazards. In this paper, can be rare earth polishing powder Feifen and pollution characteristics of resource utilization, the results show that: The main waste toner containing rare earth, fluorine and other elements, the leaching of toxic, corrosive, far less than the national standard, nor have the reactivity and flammable, do not contain radioactive material.
In this paper, polishing powder Feifen desulfurization performance were studied. The main space velocity, temperature, concentration of sulfur dioxide, oxygen and other factors on polishing powder Feifen desulfurization. Conclusion: With the space velocity increases, the breakthrough time reduced, lower desulfurization efficiency, flue gas desulfurization unit mass capacity is also reduced; reaction temperature, transmission time increases, and the sorbent sulfur capacity removal efficiency also increases; in the initial stage sulfide, SO2 concentration on the reaction rate is significant, with the SO2 concentration, curing reaction rate increases, the transmission time shortened, the desulfurization efficiency decreases more sorbent deactivation fast, slow response to early entry period. Reaction rate slowed in the cure zone, SO2 concentration of its impact is not obvious; O2 in the flue gas in the curing reaction; also studied the regeneration of waste toner powder after polishing desulfurization situation. SO2 at different temperatures and different concentrations of the test results obtained by fitting the reaction intrinsic kinetics equation is: This is a further process development and reactor design guide.
