Biomass is considered a renewable and carbon-neutral resource, and is used to prevent the shortage of consumable fossil energy. Among various biomass utilization and conversion technologies, fast pyrolysis to produce bio-oil and char is an effective way to increase energy density and reduce costs. The liquid product, bio-oil, is a complex mixture of water, hundreds of organic compounds, and more or less solid particles. Because of complex composition/low heating value/high oxygen content/strong acidity, bio-oil cannot be directly used for combustion, extraction or transportation of fine chemicals.
Some researchers suggest that blending bio-oil with other solids (e.g. char and coal) can significantly improve the possibility of utilization.
I would like to ask some questions:
1.Advantages of bio-slurry fuels over raw bio-oil?
2.What are the possible utilization of bio-slurry fuels?
3.Will bioslurry be a promising renewable energy source?
I think it will be. The basic condition for power generation is that water flows from high to low. In life, there are many situations like this everywhere.
The bio-slurry is not suitable for mechanical power generation through combustion systems. However, it can be used as fuel for boiler heating, in power plants, the brick industry, etc. Less refinery is required as compared to bio-oil, and it promotes waste utilization. It could be really a promising renewable energy source. Thank you.
First of all, yes, bioslurry fuels can be a promising renewable energy resource. In many parts of the world, for example, EU and Australia have some advanced bio-slurry fuels research outputs.
Question 1: As you mentioned in the description, raw bio-oil cannot be directly used for gasification/combustion because of its complexity. As we know, spray characteristics are crucial for liquid/slurry fuels in stationary combustion/gasification applications and are determined by properties such as viscosity, surface tension, and density. In our recent research, bio-oil and bio-char from can form slurry fuels and provides desirable fuel properties that meet specifications for combustion/gasification.
Question 2: I personally believe that gasification is the best way to utilize bio-slurry fuels. Researchers can blend different solids, such as coal and bio-char, bio-oil samples to find suitable rheological behaviors and gasification characteristics of bio-slurry fuels.
Question 3: Yes, bio-slurry fuel is a promising renewable energy source.
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