Effective viscosity and thermal conductivity of slurry in a preheater of the 150 ton/day NEDOL coal liquefaction pilot plant

Hiroshi Ishibashi, Masaki, Onozaki, Shoichi Oi, Takahiro Nishibayashi, Masatoshi Kobayashi, Hayashi Jun-Ichiro, Hironori Itoh, Tadatoshi Chiba

Research output: Contribution to journalArticle

Abstract

In order to investigate the influence of coal property and its slurry concentration on the operability of the preheater at the 150 ton/day NEDOL coal liquefaction pilot plant, the pressure drop as well as the temperatures of tube skin and coal slurry was measured along the length of a hairpin-shaped tube (72 mm φ I.D.×94 mm φ O.D., 440 m in length) of the slurry preheater. Different concentration of coal slurry was prepared for three kinds of coal by using their recycle oil. The measurement of pressure drop and temperatures were conducted under the conditions of coal slurry concentration of 40 to approximately 50 wt% and the gas/slurry feed ratio of 0.27 to approximately 0.35 Nm3-gas/kg-slurry. The results showed that the increase in the pressure drop was observed for Ikeshima bituminous coal, probably due to the swelling of coal particle, whereas little increase was for Tanito Harem subbituminous coal and Adaro brown coal. By simplifying the flow in the tube as a two-phase flow of gas and slurry, the effective viscosity and thermal conductivity of the slurry in the preheater were analyzed.

Original languageEnglish
Pages (from-to)69-83
Number of pages15
JournalNihon Enerugi Gakkaishi/Journal of the Japan Institute of Energy
Volume79
Issue number1
DOIs
Publication statusPublished - Jan 1 2000
Externally publishedYes

Fingerprint

Coal liquefaction
Pilot plants
Thermal conductivity
Coal
Viscosity
Pressure drop
Bituminous coal
Lignite
Gases
Two phase flow
Flow of gases
Swelling
Skin
Temperature

All Science Journal Classification (ASJC) codes

  • Energy(all)

Cite this

Effective viscosity and thermal conductivity of slurry in a preheater of the 150 ton/day NEDOL coal liquefaction pilot plant. / Ishibashi, Hiroshi; Masaki; Onozaki; Oi, Shoichi; Nishibayashi, Takahiro; Kobayashi, Masatoshi; Jun-Ichiro, Hayashi; Itoh, Hironori; Chiba, Tadatoshi.

In: Nihon Enerugi Gakkaishi/Journal of the Japan Institute of Energy, Vol. 79, No. 1, 01.01.2000, p. 69-83.

Research output: Contribution to journalArticle

Ishibashi, Hiroshi ; Masaki ; Onozaki ; Oi, Shoichi ; Nishibayashi, Takahiro ; Kobayashi, Masatoshi ; Jun-Ichiro, Hayashi ; Itoh, Hironori ; Chiba, Tadatoshi. / Effective viscosity and thermal conductivity of slurry in a preheater of the 150 ton/day NEDOL coal liquefaction pilot plant. In: Nihon Enerugi Gakkaishi/Journal of the Japan Institute of Energy. 2000 ; Vol. 79, No. 1. pp. 69-83.
@article{4d0082031971491c9bae19377d66f491,
title = "Effective viscosity and thermal conductivity of slurry in a preheater of the 150 ton/day NEDOL coal liquefaction pilot plant",
abstract = "In order to investigate the influence of coal property and its slurry concentration on the operability of the preheater at the 150 ton/day NEDOL coal liquefaction pilot plant, the pressure drop as well as the temperatures of tube skin and coal slurry was measured along the length of a hairpin-shaped tube (72 mm φ I.D.×94 mm φ O.D., 440 m in length) of the slurry preheater. Different concentration of coal slurry was prepared for three kinds of coal by using their recycle oil. The measurement of pressure drop and temperatures were conducted under the conditions of coal slurry concentration of 40 to approximately 50 wt{\%} and the gas/slurry feed ratio of 0.27 to approximately 0.35 Nm3-gas/kg-slurry. The results showed that the increase in the pressure drop was observed for Ikeshima bituminous coal, probably due to the swelling of coal particle, whereas little increase was for Tanito Harem subbituminous coal and Adaro brown coal. By simplifying the flow in the tube as a two-phase flow of gas and slurry, the effective viscosity and thermal conductivity of the slurry in the preheater were analyzed.",
author = "Hiroshi Ishibashi and Masaki and Onozaki and Shoichi Oi and Takahiro Nishibayashi and Masatoshi Kobayashi and Hayashi Jun-Ichiro and Hironori Itoh and Tadatoshi Chiba",
year = "2000",
month = "1",
day = "1",
doi = "10.3775/jie.79.69",
language = "English",
volume = "79",
pages = "69--83",
journal = "Nenryo Kyokai-Shi/Journal of the Fuel Society of Japan",
issn = "0916-8753",
publisher = "一般社団法人日本エネルギー学会",
number = "1",

}

TY - JOUR

T1 - Effective viscosity and thermal conductivity of slurry in a preheater of the 150 ton/day NEDOL coal liquefaction pilot plant

AU - Ishibashi, Hiroshi

AU - Masaki,

AU - Onozaki,

AU - Oi, Shoichi

AU - Nishibayashi, Takahiro

AU - Kobayashi, Masatoshi

AU - Jun-Ichiro, Hayashi

AU - Itoh, Hironori

AU - Chiba, Tadatoshi

PY - 2000/1/1

Y1 - 2000/1/1

N2 - In order to investigate the influence of coal property and its slurry concentration on the operability of the preheater at the 150 ton/day NEDOL coal liquefaction pilot plant, the pressure drop as well as the temperatures of tube skin and coal slurry was measured along the length of a hairpin-shaped tube (72 mm φ I.D.×94 mm φ O.D., 440 m in length) of the slurry preheater. Different concentration of coal slurry was prepared for three kinds of coal by using their recycle oil. The measurement of pressure drop and temperatures were conducted under the conditions of coal slurry concentration of 40 to approximately 50 wt% and the gas/slurry feed ratio of 0.27 to approximately 0.35 Nm3-gas/kg-slurry. The results showed that the increase in the pressure drop was observed for Ikeshima bituminous coal, probably due to the swelling of coal particle, whereas little increase was for Tanito Harem subbituminous coal and Adaro brown coal. By simplifying the flow in the tube as a two-phase flow of gas and slurry, the effective viscosity and thermal conductivity of the slurry in the preheater were analyzed.

AB - In order to investigate the influence of coal property and its slurry concentration on the operability of the preheater at the 150 ton/day NEDOL coal liquefaction pilot plant, the pressure drop as well as the temperatures of tube skin and coal slurry was measured along the length of a hairpin-shaped tube (72 mm φ I.D.×94 mm φ O.D., 440 m in length) of the slurry preheater. Different concentration of coal slurry was prepared for three kinds of coal by using their recycle oil. The measurement of pressure drop and temperatures were conducted under the conditions of coal slurry concentration of 40 to approximately 50 wt% and the gas/slurry feed ratio of 0.27 to approximately 0.35 Nm3-gas/kg-slurry. The results showed that the increase in the pressure drop was observed for Ikeshima bituminous coal, probably due to the swelling of coal particle, whereas little increase was for Tanito Harem subbituminous coal and Adaro brown coal. By simplifying the flow in the tube as a two-phase flow of gas and slurry, the effective viscosity and thermal conductivity of the slurry in the preheater were analyzed.

UR - http://www.scopus.com/inward/record.url?scp=0342758623&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0342758623&partnerID=8YFLogxK

U2 - 10.3775/jie.79.69

DO - 10.3775/jie.79.69

M3 - Article

AN - SCOPUS:0342758623

VL - 79

SP - 69

EP - 83

JO - Nenryo Kyokai-Shi/Journal of the Fuel Society of Japan

JF - Nenryo Kyokai-Shi/Journal of the Fuel Society of Japan

SN - 0916-8753

IS - 1

ER -