In this particular application, the sludge from municipal sewage treatment plant is converted into biofuel by drying. The dry sludge is transported to a thermal power plant for power production. Meanwhile, the heat required for drying is the waste steam from the thermal power plant. The superiority of this application lies in the full use of social resources and social division of labor to solve sludge problem. It forms a complete market-oriented and sustainable development business application.
The sludge drying combined with power generation technology includes one-stage and two sludge drying processes.
In this application, the petrochemical sludge drying and incineration technology uses the advanced thin film sludge dryer to realize the high efficiency heat drying of sludge and effectively improve the calorific value of sludge.
Thin film sludge dryer has an inert system, special seal structure and multiple emergency safety assurance measures can provide the system with high safety and reliability.
In view of the characteristics of oily sludge, the two section incineration system of “rotary kiln and two combustion chambers” is used for the full combustion of all the combustible materials in the sludge.
The system completely recovers the energy generated in the sludge incineration process, and uses it in thin film sludge dryer. Such an act enables the system to satisfy the vast majority of dry energy consumption. Using “dry and wet” method to treat the tail gas, tail gas standardized emissions is achieved.