Feeding biomass into pressure and related safety engineering

Aimo Rautalin, Carl Wilen

Research output: Book/ReportReportProfessional

Abstract

Malfunctions in the fuel feed and handling equipment could be cause for biomass gasification process upsets, and are of major concern for pressurized gasification processes. One precondition for the development of handling and feed equipment for solid fuels and wastes and for the design of novel systems is a good knowledge of the characteristics and flowability of bulk materials, because the requirements for the equipment reliability, adjustability, economy, and lifetime are becoming more demanding. Different methods of feeding biomass fuels into pressurized gasifiers, as well as limitations and special features of these methods, are discussed in this literature review. Examples of different systems for fuel feed and ash removal in pressurized gasification and combustion plants are given, and the available plant operational data are surveyed for a better understanding of the handling characteristics of bulk materials in biomass gasification plants. Unfortunately, there are only a few references to long-term operating experience with biomass feeders in the literature. Safety engineering, including fuel flow characteristics, and dust explosion and spontaneous ignition properties, is also discussed with special attention given to the conditions in pressurized feeding systems. Results from dust explosion and spontaneous ignition tests with biofuels at elevated pressures are presented.
Original languageEnglish
Place of PublicationEspoo
PublisherVTT Technical Research Centre of Finland
Number of pages62
ISBN (Print)951-38-4322-X
Publication statusPublished - 1992
MoE publication typeNot Eligible

Publication series

NameVTT Tiedotteita - Meddelanden - Research Notes
PublisherVTT
No.1428
ISSN (Print)1235-0605
ISSN (Electronic)1455-0865

Fingerprint

Safety engineering
Biomass
Gasification
Ashes
Explosions
Dust
Ignition
Biofuels

Keywords

  • biomass
  • fuels
  • feeders
  • safety engineering
  • properties
  • ignition
  • spontaneous combustion
  • fire hazards
  • explosions

Cite this

Rautalin, A., & Wilen, C. (1992). Feeding biomass into pressure and related safety engineering. Espoo: VTT Technical Research Centre of Finland. VTT Tiedotteita - Meddelanden - Research Notes, No. 1428
Rautalin, Aimo ; Wilen, Carl. / Feeding biomass into pressure and related safety engineering. Espoo : VTT Technical Research Centre of Finland, 1992. 62 p. (VTT Tiedotteita - Meddelanden - Research Notes; No. 1428).
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Rautalin, A & Wilen, C 1992, Feeding biomass into pressure and related safety engineering. VTT Tiedotteita - Meddelanden - Research Notes, no. 1428, VTT Technical Research Centre of Finland, Espoo.

Feeding biomass into pressure and related safety engineering. / Rautalin, Aimo; Wilen, Carl.

Espoo : VTT Technical Research Centre of Finland, 1992. 62 p. (VTT Tiedotteita - Meddelanden - Research Notes; No. 1428).

Research output: Book/ReportReportProfessional

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PY - 1992

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AB - Malfunctions in the fuel feed and handling equipment could be cause for biomass gasification process upsets, and are of major concern for pressurized gasification processes. One precondition for the development of handling and feed equipment for solid fuels and wastes and for the design of novel systems is a good knowledge of the characteristics and flowability of bulk materials, because the requirements for the equipment reliability, adjustability, economy, and lifetime are becoming more demanding. Different methods of feeding biomass fuels into pressurized gasifiers, as well as limitations and special features of these methods, are discussed in this literature review. Examples of different systems for fuel feed and ash removal in pressurized gasification and combustion plants are given, and the available plant operational data are surveyed for a better understanding of the handling characteristics of bulk materials in biomass gasification plants. Unfortunately, there are only a few references to long-term operating experience with biomass feeders in the literature. Safety engineering, including fuel flow characteristics, and dust explosion and spontaneous ignition properties, is also discussed with special attention given to the conditions in pressurized feeding systems. Results from dust explosion and spontaneous ignition tests with biofuels at elevated pressures are presented.

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KW - fuels

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KW - ignition

KW - spontaneous combustion

KW - fire hazards

KW - explosions

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Rautalin A, Wilen C. Feeding biomass into pressure and related safety engineering. Espoo: VTT Technical Research Centre of Finland, 1992. 62 p. (VTT Tiedotteita - Meddelanden - Research Notes; No. 1428).