Abstract
According to thermodynamic equilibrium studies, it is possible to reduce the sulphur content of dry product gas by iron compounds to < 100 ppm at temperatures lower than 450 deg C. The equilibnum content of hydrogen sulphide is increased by iron oxides, while the temperature and the water vapour content of the gas increase. The equilibrium content of hydrogen sulphide is not essentially affected by pressure. In a typical gas atmosphes of peat fluid-bed gasification the iron oxide is not reducible into elemental iron. Iron oxide is, without compound agents, insufficiently durable in several successive absorption and regeneration cycles at high temperatures and pressures. By mixing the iron compound, for example, with aluminium oxide or silicon dioxide or by adding small amounts of certain additives the durability of the sorbent can be improved significantly. Soroents superior to iron oxide are also studied. The im of the development work of mixed metal sorbents is to improve the sorbent so that it stains a sufficient strength and desulphurization capacity in recurrent absorption and regeneration cycles. Mixed metal oxide compounds with a higher desulphurization capacity and an ability to function at higher temperatures than zinc ferrite, are being studied. One aim is to
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Hepola, J;
Kurkela, E;
Maekinen, T
[1]
- Technical Research Centre of Finland, Espoo (Finland). Lab. of Fuel and Process Technology
Citation Formats
Hepola, J, Kurkela, E, and Maekinen, T.
Desulphurization of hot product gas by iron compounds and mixed metal-oxide sorbents. Literature review; Rikinpoisto kuumasta tuotekaasusta rautayhdisteillae ja metallioksidiseoksilla. Kirjallisuuskatsaus.
Finland: N. p.,
1991.
Web.
Hepola, J, Kurkela, E, & Maekinen, T.
Desulphurization of hot product gas by iron compounds and mixed metal-oxide sorbents. Literature review; Rikinpoisto kuumasta tuotekaasusta rautayhdisteillae ja metallioksidiseoksilla. Kirjallisuuskatsaus.
Finland.
Hepola, J, Kurkela, E, and Maekinen, T.
1991.
"Desulphurization of hot product gas by iron compounds and mixed metal-oxide sorbents. Literature review; Rikinpoisto kuumasta tuotekaasusta rautayhdisteillae ja metallioksidiseoksilla. Kirjallisuuskatsaus."
Finland.
@misc{etde_10141491,
title = {Desulphurization of hot product gas by iron compounds and mixed metal-oxide sorbents. Literature review; Rikinpoisto kuumasta tuotekaasusta rautayhdisteillae ja metallioksidiseoksilla. Kirjallisuuskatsaus}
author = {Hepola, J, Kurkela, E, and Maekinen, T}
abstractNote = {According to thermodynamic equilibrium studies, it is possible to reduce the sulphur content of dry product gas by iron compounds to < 100 ppm at temperatures lower than 450 deg C. The equilibnum content of hydrogen sulphide is increased by iron oxides, while the temperature and the water vapour content of the gas increase. The equilibrium content of hydrogen sulphide is not essentially affected by pressure. In a typical gas atmosphes of peat fluid-bed gasification the iron oxide is not reducible into elemental iron. Iron oxide is, without compound agents, insufficiently durable in several successive absorption and regeneration cycles at high temperatures and pressures. By mixing the iron compound, for example, with aluminium oxide or silicon dioxide or by adding small amounts of certain additives the durability of the sorbent can be improved significantly. Soroents superior to iron oxide are also studied. The im of the development work of mixed metal sorbents is to improve the sorbent so that it stains a sufficient strength and desulphurization capacity in recurrent absorption and regeneration cycles. Mixed metal oxide compounds with a higher desulphurization capacity and an ability to function at higher temperatures than zinc ferrite, are being studied. One aim is to simultaneously remove also other detrimental compounds, such as ammonia and chlorides, from the gas. Different process alternatives for sulphur recovery are being studied. Simpler and cheaper processes for replacing the conventional Claus process in the production of elemental sulphur are being developed.}
place = {Finland}
year = {1991}
month = {Jul}
}
title = {Desulphurization of hot product gas by iron compounds and mixed metal-oxide sorbents. Literature review; Rikinpoisto kuumasta tuotekaasusta rautayhdisteillae ja metallioksidiseoksilla. Kirjallisuuskatsaus}
author = {Hepola, J, Kurkela, E, and Maekinen, T}
abstractNote = {According to thermodynamic equilibrium studies, it is possible to reduce the sulphur content of dry product gas by iron compounds to < 100 ppm at temperatures lower than 450 deg C. The equilibnum content of hydrogen sulphide is increased by iron oxides, while the temperature and the water vapour content of the gas increase. The equilibrium content of hydrogen sulphide is not essentially affected by pressure. In a typical gas atmosphes of peat fluid-bed gasification the iron oxide is not reducible into elemental iron. Iron oxide is, without compound agents, insufficiently durable in several successive absorption and regeneration cycles at high temperatures and pressures. By mixing the iron compound, for example, with aluminium oxide or silicon dioxide or by adding small amounts of certain additives the durability of the sorbent can be improved significantly. Soroents superior to iron oxide are also studied. The im of the development work of mixed metal sorbents is to improve the sorbent so that it stains a sufficient strength and desulphurization capacity in recurrent absorption and regeneration cycles. Mixed metal oxide compounds with a higher desulphurization capacity and an ability to function at higher temperatures than zinc ferrite, are being studied. One aim is to simultaneously remove also other detrimental compounds, such as ammonia and chlorides, from the gas. Different process alternatives for sulphur recovery are being studied. Simpler and cheaper processes for replacing the conventional Claus process in the production of elemental sulphur are being developed.}
place = {Finland}
year = {1991}
month = {Jul}
}