Sulphur poisoning of nickel-based hot gas cleaning catalysts in synthetic gasification gas: I. Effect of different process parameters

Jouko Hepola (Corresponding Author), Pekka Simell

Research output: Contribution to journalArticleScientificpeer-review

74 Citations (Scopus)

Abstract

The effect of different process parameters on sulphur poisoning of nickel catalysts in tar (toluene), ammonia and methane decomposition was studied. Tests were carried out in a fixed-bed tube reactor at 800–1000°C at 5 and under 20 bar total pressure using a synthetic gasification gas mixture. In the same conditions, sulphur affected less the toluene and methane decomposing activity than the ammonia decomposing activity. Ammonia conversion was affected by the catalyst type but not by the nickel content of catalyst. When temperature was increased the effect of sulphur poisoning was decreased. At 20 bar pressure the poisoning effect of sulphur was stronger than at 5 bar pressure. To prevent sulphur poisoning of nickel catalysts in the tar and ammonia decomposition process at high pressure (20–30 bar), the catalyst process should operate at > 900°C. In addition, by decreasing the space velocity of the process the sulphur poisoning effect could be compensated in the test conditions.

Original languageEnglish
Pages (from-to)287 - 303
Number of pages17
JournalApplied Catalysis B: Environmental
Volume14
Issue number3-4
DOIs
Publication statusPublished - 1997
MoE publication typeA1 Journal article-refereed

Fingerprint

Catalyst poisoning
poisoning
Nickel
Gasification
Sulfur
Cleaning
nickel
Gases
catalyst
sulfur
Ammonia
Catalysts
ammonia
gas
Tars
Methane
Tar
tar
Toluene
toluene

Keywords

  • gasification

Cite this

@article{99dba432af1a438ebaa57329345b1c12,
title = "Sulphur poisoning of nickel-based hot gas cleaning catalysts in synthetic gasification gas: I. Effect of different process parameters",
abstract = "The effect of different process parameters on sulphur poisoning of nickel catalysts in tar (toluene), ammonia and methane decomposition was studied. Tests were carried out in a fixed-bed tube reactor at 800–1000°C at 5 and under 20 bar total pressure using a synthetic gasification gas mixture. In the same conditions, sulphur affected less the toluene and methane decomposing activity than the ammonia decomposing activity. Ammonia conversion was affected by the catalyst type but not by the nickel content of catalyst. When temperature was increased the effect of sulphur poisoning was decreased. At 20 bar pressure the poisoning effect of sulphur was stronger than at 5 bar pressure. To prevent sulphur poisoning of nickel catalysts in the tar and ammonia decomposition process at high pressure (20–30 bar), the catalyst process should operate at > 900°C. In addition, by decreasing the space velocity of the process the sulphur poisoning effect could be compensated in the test conditions.",
keywords = "gasification",
author = "Jouko Hepola and Pekka Simell",
year = "1997",
doi = "10.1016/S0926-3373(97)00031-3",
language = "English",
volume = "14",
pages = "287 -- 303",
journal = "Applied Catalysis B: Environmental",
issn = "0926-3373",
publisher = "Elsevier",
number = "3-4",

}

Sulphur poisoning of nickel-based hot gas cleaning catalysts in synthetic gasification gas : I. Effect of different process parameters. / Hepola, Jouko (Corresponding Author); Simell, Pekka.

In: Applied Catalysis B: Environmental, Vol. 14, No. 3-4, 1997, p. 287 - 303.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Sulphur poisoning of nickel-based hot gas cleaning catalysts in synthetic gasification gas

T2 - I. Effect of different process parameters

AU - Hepola, Jouko

AU - Simell, Pekka

PY - 1997

Y1 - 1997

N2 - The effect of different process parameters on sulphur poisoning of nickel catalysts in tar (toluene), ammonia and methane decomposition was studied. Tests were carried out in a fixed-bed tube reactor at 800–1000°C at 5 and under 20 bar total pressure using a synthetic gasification gas mixture. In the same conditions, sulphur affected less the toluene and methane decomposing activity than the ammonia decomposing activity. Ammonia conversion was affected by the catalyst type but not by the nickel content of catalyst. When temperature was increased the effect of sulphur poisoning was decreased. At 20 bar pressure the poisoning effect of sulphur was stronger than at 5 bar pressure. To prevent sulphur poisoning of nickel catalysts in the tar and ammonia decomposition process at high pressure (20–30 bar), the catalyst process should operate at > 900°C. In addition, by decreasing the space velocity of the process the sulphur poisoning effect could be compensated in the test conditions.

AB - The effect of different process parameters on sulphur poisoning of nickel catalysts in tar (toluene), ammonia and methane decomposition was studied. Tests were carried out in a fixed-bed tube reactor at 800–1000°C at 5 and under 20 bar total pressure using a synthetic gasification gas mixture. In the same conditions, sulphur affected less the toluene and methane decomposing activity than the ammonia decomposing activity. Ammonia conversion was affected by the catalyst type but not by the nickel content of catalyst. When temperature was increased the effect of sulphur poisoning was decreased. At 20 bar pressure the poisoning effect of sulphur was stronger than at 5 bar pressure. To prevent sulphur poisoning of nickel catalysts in the tar and ammonia decomposition process at high pressure (20–30 bar), the catalyst process should operate at > 900°C. In addition, by decreasing the space velocity of the process the sulphur poisoning effect could be compensated in the test conditions.

KW - gasification

U2 - 10.1016/S0926-3373(97)00031-3

DO - 10.1016/S0926-3373(97)00031-3

M3 - Article

VL - 14

SP - 287

EP - 303

JO - Applied Catalysis B: Environmental

JF - Applied Catalysis B: Environmental

SN - 0926-3373

IS - 3-4

ER -