Project Description:

Everbright Environment Energy (Shouguang) Co., Ltd was founded by Everbright Environment Energy Group in Shouguang Shandong. It was an environmental friendly waste treatment company. It was designed mainly to treat municipal solid wastes, but was concurrently engaged in power generation as well. The current design and construction scale was two 300 t/d waste incineration furnaces. 

The service scope of STC in this project mainly included the planning for the activated carbon transfer system, the design for the detection and designing system, the supply of equipment, installation and debugging process, etc. This was a small-scale EPC project. The operation of this system was a very crucial part to remove harmful pollutants in the exhaust gases of waste burning.

Process Design:

Activated carbon adsorption is one important process for dioxins and heavy metals treatment in a flue gas purification system of the MSW Plant. With bag filters, most of dioxins and heavy metals in the flue gas can be removed, in order to meet the EU 2000 Standards for dioxins and heavy metals emission. 

Dioxins in the flue gas exists in the form of particle, aerosol or gas. Dioxins produced by MSW incineration are mainly in the form of particle, other dioxins are mainly in the form gas. Making use of the large superficial area and excellent adsorptive performance, dioxins in both solid and gas phase can be adsorbed at the same time. Along with the bag filters, most of dioxins can be removed from the flue gas.

Activated carbon transfer system pumps the activated carbon powder to the entrance of the bag filter mainly by compressed air. The powder is sprayed into the flue through nozzles and is mixed evenly with the flue gas to adsorb dioxins and heavy metals.