03.08.2015   Thermal biomass. conversion and utilization —. Biomass information. system

Products

The pyrolysis liquid was black and viscous and contained a significant proportion of charcoal of up to 15% by weight of the oil. This caused a "lumpy" texture in early samples. Atypical pyrolysis liquid analysis and a gas analysis is given in Table 5.3. The char was a coarse powder with particle sizes ranging from 40-50 microns to several mm, similar to the size and shape characteristics to the feed.

Table 5.2 Alten Typical Mass Balance

Basis: 100 kg d. a.f. biomass feed

INPUTS

kS

OUTPUTS

Ka

HHV. MJ/ko

% Enerav

Dry biomass

100.0

Charcoal

20.5

29.7

32

Moisture

2.0

Bio-oil

20.5

26.3

28

Pyrolysis air

39.0

Fuel gas

100.0

4.1

32

Losses

—

8

TOTAL

141.0

TOTAL

141.0

100

Table 5.3 Alten Typical Product Analyses

LIQUID GAS

Elemental Analysis {wet basis)

CO

27.6

% VO I.

C (% wt)

61.90

CO2

21.8

% vol.

H (% wt)

6.00

H2

4.7

% vol.

N (% wt)

1.05

O2

0.7

% vol.

S (% wt)

0.03

N2

38.2

% vol.

0 (by difference)

31.02

CH4

4.7

% vol.

H/C ratio

1.16

C2H4

0.4

% vol.

O/C ratio

0.18

C2H6

0.3

% vol.

Moisture (% wt)

14.60

Others (by difference)

1.6

% vol.

Ash (% wt)

1.50

Higher Heating Value

5 MJ/Nm3

Char content (% wt)

9.20

Viscosity, cp @ 70°C

55

SOLID

HHV, MJ/kg

26.3

Volatiles

15-20%

Specific gravity (15/4 °С)

1.195

Higher Heating Value

29.5 MJ/kg

Empirical formula

CH0.25°0.07

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