MaxMulti Plus Anti-Corrosion Boiler

Multifuel flexibility in biomass boiler combustion is a basic requirement for biomass power plants in China, given the variable nature of the fuel supply for most power plants. 10 years of experience in China have clearly shown that this variability  and the quality of fuels most commonly used are the main causes of high levels of boiler corrosion. The most significant impact of fuel-induced corrosion is on fouling, reduction of combustion efficiency and superheater degradation. The results are to be found in lower levels of efficiency, higher maintenance costs and shorter life cycle of the equipment 
 
Such levels of corrosion can be exacerbated due to other factors such as irregular or improper maintenance and operator error in boiler calibration.    
 
DP’s MaxMulti Plus solution is aimed at addressing  these problems more effectively, in order to improve boiler availability. Using data gathered over the last 10 years DP experts have developed a new design which also reduces the occurrence and the effects of corrosion DP boiler solutions for the China biomass environment addresses some key design and operation requirements.   
 
Based on the high performing, proven 130 t/h DP boiler, the new design features a variety of modifications. Patented anti corrosion techniques are incorporated within a new boiler configuration; advanced material specifications and integrated, proprietary automated control systems are all used in this enhanced boiler solution to improve operation stability and overall performance 
 
The MaxMulti Plus solution is offered with a maintenance package and an extended 2 year warranty.

Benefits Advantages and Benefits

Engineering MaxMulti Plus Anti-Corrosion Boiler

1
Advanced Automatic Control solution
Equipped with DPCT’s Advanced Automatic Control solution
2
Redesigned secondary air
The Boiler dimensions are changed to reduce fly ash. Secondary air and distribution system have been redesigned
3
Improved superheater
The Boiler and Superheater configuration has been redesigned, and the steam order between Superheaters 2 and 3 has been changed
4
Integrated Low Nox SNCR+SCR
Integration of Low Nox SNCR + SCR technology reduces the cost of additional emissions handling equipment

Designed Performance Parameters (30MW power plant solution)

Main Steam Flow Main Steam Pressure Main Steam Temperature Feed Water Temperature Fuel Consumption
130 t/h 92 bar 540oC 210oC 25 tph
Main Steam Flow 130 t/h
Main Steam Pressure 92 bar
Main Steam Temperature 540oC
Feed Water Temperature 210oC
Fuel Consumption 25 tph

Integrated NOx Reduction Technology with optional SNCR system

Boiler Size Biomass Solution Type Emission standard
130tph Typical non-DP Solution May not meet 300mg/M3
Non-DP Solution + SNCR 100 - 400mg/M3
DP Solution with integrated LowNOx 100 - 400mg/M3
Non-DP Solution + SCR 100 - 200mg/M3
DP Solution with integrated LowNOx + SNCR 50 - 200mg/M3
DP Solution with integrated LowNOx + SCR 50 - 100mg/M3
Boiler Size 130tph
Biomass Solution Type Typical non-DP Solution
Non-DP Solution + SNCR
DP Solution with integrated LowNOx
Non-DP Solution + SCR
DP Solution with integrated LowNOx + SNCR
DP Solution with integrated LowNOx + SCR
Emission standard May not meet 300mg/M3
100 - 400mg/M3
100 - 400mg/M3
100 - 200mg/M3
50 - 200mg/M3
50 - 100mg/M3