Biomass boiler cost calculation method: biomass boiler fuel consumption per hour = boiler heating quantity/biomass pellet combustion calorific value/boiler combustion efficiency. Different fuel consumption has different calorific value. The calorific value of biomass pellet is about 4000 kcal, the fuel consumption per hour of 1 ton biomass boiler is 150 kg/hour, the average one ton of steam needs 150 kg fuel. The thermal efficiency is between 90%, about 3% higher than the same industry boiler. It is a cost-effective biomass fuel boiler.
Although biomass boilers cost about 8% more fuel than coal-fired boilers, biomass is mainly burned by volatile substances (wood fibres). After complete combustion, only a small amount of ash is produced, and the boiler can also feed and ash automatically. Slag, reduce the cost of boiler workers, do not need desulfurization and other equipment. In order to improve the combustion efficiency, it is necessary to first treat the empty fruit beam with a cutting machine to form biomass pellet. The combustion of empty fruit biomass boiler needs a lot of fuel. To save on fuel transportation costs, it is best to locate power plants in areas where fuel is abundant.
Technological advantages of biomass boiler:
- Arch pipe and threaded pipe are used to form the drum, which changes the drum from a quasi-steel body to a quasi-elastomer structure, eliminating tensioning members in the tuber-plate area and reducing pressure. The pipe in the tube plate changes from two return trips to a single return trip, which solves the problem of tube plate cracks.
- As the riser row is set at the lower part of the drum, the stagnant water area at the bottom of the drum is eliminated, so sludge is not easy to deposit, so is the high-temperature area of the drum. It cools well and prevents the bottom of the drum.
- High efficiency heat transfer threaded tube is adopted to improve the heat transfer effect, the boiler heating temperature is rapidly increased, and the thermal efficiency of the boiler is improved.
- Compact structure, compared with the same type of boiler, small volume, saving the boiler room infrastructure investment.
- Stable operation, easy adjustment and power output.
- The use of threaded pipe to enhance heat transfer can improve the heat transfer coefficient and thermal efficiency, because the smoke in the pipe has a disturbing effect. Pipes do not accumulate dust and play a role in self-cleaning.
- The eight-shaped wall and the shisha window in the furnace can reduce dust to a certain extent. The original dust emission concentration of the boiler is controlled below the standard to ensure that the boiler soot emission meets the environmental protection requirements.
- The unique double-layer secondary air design improves the ignition condition of biomass fuel, and adopts independent gas chamber to realize reasonable air distribution, and forms a combustion friendly pneumatic field in the furnace, making the combustion temperature as high as,. High combustion efficiency.
