A Review of Intermediate Pyrolysis as a Technology of Biomass Conversion for Coproduction of Biooil and Adsorption Biochar

Table 1

Classification of pyrolysis processes [29–34].

Property	Slow	Intermediate	Fast	Flash
Heating rate (°C/s)	1.1–1	1–10	10–200	>1000
Feed size (mm)	5–50	1–5	<1	<0.5
Reaction temperature (°C)	400–500	400–650	850–1250	>1000
Vapor residence time (s)	300–550	0.5–20	0.5–10	<1
Feed water content (%)	Up to 40	Up to 40	<<10	<<10
Biooil yield (%)	20–50	35–50	60–75	60–75
Biochar yield (%)	25–35	25–40	10–25	10–25
Gas yield (%)	20–50	20–30	10–30	10–30