Feasibility of Using Wood Flash-Pyrolysis Oil in Diesel Engines

Abstract

The paper describes an experimental study concerning the feasibility of using bio-oil obtained from flash pyrolysis of wood for fuelling diesel power plants. The research is based on various tests aimed at verifying relevant operative characteristics of the fuel: spray analyses, engine tests, thermogravimetric analyses (TGA), single-drop reactor tests and corrosion tests. The spray analyses show that the achievement of a satisfactory atomisation with flash-pyrolysis oil is problematic. The engine experimentation shows that flash-pyrolysis oil needs to be modified or mixed (e.g. with alcohol) to make self ignition possible. Besides, unacceptable build-up of carbonaceous deposits, injection system clamping and engine seizure occur. Very large char generation is the main finding of the tests in the TGA apparatus and in the single-drop atmospheric reactor (“drop-tube”). The corrosion tests demonstrate that steel undergoes fast erosion by contact of flash-pyrolysis oil. All these findings show that characteristics of current-production flash-pyrolysis oil are not suited for its utilisation in diesel engines

Engines for Combined Heat and Power

“…At full load, combustion duration of the 30% DSPO blend operation was almost 12% lower than for FD. In the case of engine testing with other types of pyrolysis oils [40,41], long ignition delays and short combustion periods were also reported. Higher cylinder pressure and high heat release rates of pyrolysis oil combustion are also reported in the literature [42][43][44].…”

A review on conversion techniques of liquid fuel from waste plastic materials

“…Performance and combustion characteristics of diesel with tire pyrolysis oil (TPO) were carried out for different blending ratios and concluded that thermal efficiency was increased with the increasing of blending concentration higher than diesel. However, NOx, HC, and CO concentrations were more in emissions because of ignition delay and aromatic contents . Distilled TPO (DTPO) with diesel reduced the amount of NOx (about 8%) compared with diesel (about 10%), and HC was decreased up to 2% with virgin DTPO operations.…”

Application of Waste Biomass Pyrolysis Oil in a Direct Injection Diesel Engine: For a Small Scale Non-Grid Electrification

“…This resulted in the worsen THC emission and there was no smoke data. The SMD (Sauter mean diameter) of the raw bio-oil was greater than the diesel fuel [35]. The SMD observed became higher with the increase of the kinematic viscosity [36].…”