TY - BOOK
T1 - Production and use of peat coke
AU - Brandt, Jarl
AU - Sipilä, Kai
AU - Thun, Rabbe
PY - 1986
Y1 - 1986
N2 - The properties of peat coke are fairly similar to those
of wood charcoal. A high reactivity, a porous structure
and a low sulphur content are typical characteristics of
peat coke. The phosphorus content of peat coke is usually
high and the strength low compared to other cokes,
especially anthracite coke.
There are two peat coke factories in operation in the
world, one in the Federal Republic of Germany (F.RG.) and
the other in Finland. The German factory, owned by
Inducarbon GmbH, manufactures 10 000 t/a peat coke. The
capacity of the Finnish factory, owned by Vapo Oy, is 30
000 t/a peat coke, and in addition, this factory
manufactures about 40 000 t/a briquettes and produces 50
000 MWh/a electricity and 20 MW district heat. Today peat
coke is mainly used as a reductant in the production of
ferrosilica and silica and as a raw material for
activated carbon. The use of peat coke in the pro-duction
of ferrosilica and silica is based on its high
reactivity, which improves the economy of the process by
reducing the loss of silica and the consumption of
electricity. In the F.RG., peat coke has been used as the
raw material for special grades of activated carbon. In
Finland, barbeque coke is also produced from peat. The
quality of peat coke is affected not only by the
carbonization conditions, but also by the quality and
pretreatment of the raw peat. The higher the degree of
humi-fication, the greater the strength of both sod peat
and peat coke. A higher degree of peat decomposition also
results in better coke yields. A sufficiently low
moist-ure content after field drying is also necessary if
the sods are to withstand the mechanical stresses
encountered in further processing. Peat grades with as
low an ash content as possible should be chosen for the
raw material. Particular attention should be paid to the
contents of phosphorus and certain metals, as these
components may restrict the use of peat coke in certain
applications. Recently, other coking methods, developed
for brown coal, have also been suggested for peat
carbonization. Of these, the Lurgi-Salem method based on
a hearth furnace may be worth attention. This method was
originally developed for non-caking coal. Howevner, sod
peat has not, as yet, been tested in this type of
furnace; that is, its applicability to peat is
unconfirmed.
AB - The properties of peat coke are fairly similar to those
of wood charcoal. A high reactivity, a porous structure
and a low sulphur content are typical characteristics of
peat coke. The phosphorus content of peat coke is usually
high and the strength low compared to other cokes,
especially anthracite coke.
There are two peat coke factories in operation in the
world, one in the Federal Republic of Germany (F.RG.) and
the other in Finland. The German factory, owned by
Inducarbon GmbH, manufactures 10 000 t/a peat coke. The
capacity of the Finnish factory, owned by Vapo Oy, is 30
000 t/a peat coke, and in addition, this factory
manufactures about 40 000 t/a briquettes and produces 50
000 MWh/a electricity and 20 MW district heat. Today peat
coke is mainly used as a reductant in the production of
ferrosilica and silica and as a raw material for
activated carbon. The use of peat coke in the pro-duction
of ferrosilica and silica is based on its high
reactivity, which improves the economy of the process by
reducing the loss of silica and the consumption of
electricity. In the F.RG., peat coke has been used as the
raw material for special grades of activated carbon. In
Finland, barbeque coke is also produced from peat. The
quality of peat coke is affected not only by the
carbonization conditions, but also by the quality and
pretreatment of the raw peat. The higher the degree of
humi-fication, the greater the strength of both sod peat
and peat coke. A higher degree of peat decomposition also
results in better coke yields. A sufficiently low
moist-ure content after field drying is also necessary if
the sods are to withstand the mechanical stresses
encountered in further processing. Peat grades with as
low an ash content as possible should be chosen for the
raw material. Particular attention should be paid to the
contents of phosphorus and certain metals, as these
components may restrict the use of peat coke in certain
applications. Recently, other coking methods, developed
for brown coal, have also been suggested for peat
carbonization. Of these, the Lurgi-Salem method based on
a hearth furnace may be worth attention. This method was
originally developed for non-caking coal. Howevner, sod
peat has not, as yet, been tested in this type of
furnace; that is, its applicability to peat is
unconfirmed.
KW - peat coke
KW - production
KW - sod peat
KW - carbonization
M3 - Report
SN - 951-38-2507-8
T3 - Valtion teknillinen tutkimuskeskus. Tiedotteita
BT - Production and use of peat coke
PB - VTT Technical Research Centre of Finland
CY - Espoo
ER -
