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ENHANCEMENT OF HIGHLY LOADED COAL-GAS-WATER SLURRY AND ITS METHOD FOR COMBUSTION WITHOUT BAD WASTE GAS.

Research Project

Project/Area Number 59850151
Research Category

Grant-in-Aid for Developmental Scientific Research

Allocation TypeSingle-year Grants
Research Field 化学工学
Research InstitutionTOKYO UNIVERSITY OF AGRICULTURE AND TECHNOLOGY

Principal Investigator

OTOTAKE NAOSHI  TOKYO UNIVERSITY OF AGRICULTURE AND TECHNOLOGY, PROFESSOR, 工学部, 教授 (70010767)

Co-Investigator(Kenkyū-buntansha) 島村 学  日本カーボゲル株式会社, マネージャー
YUTANI NOEUETSU  TOKYO UNIVERSITY OF AGRICULTURE AND TECHNOLOGY, ASSOCIATE PROFESSOR, 工学部, 助教 (40016390)
HORIO MASAYUKI  TOKYO UNIVERSITY OF AGRICULTURE AND TECHNOLOGY, ASSOCIATE PROFESSOR, 工学部, 助教授 (40109301)
SHIMAMURA MANABU  JAPANESE CARBOGEL CORPORATION, MANAGER
Project Period (FY) 1984 – 1986
Project Status Completed (Fiscal Year 1986)
Budget Amount *help
¥7,600,000 (Direct Cost: ¥7,600,000)
Fiscal Year 1986: ¥1,200,000 (Direct Cost: ¥1,200,000)
Fiscal Year 1985: ¥2,600,000 (Direct Cost: ¥2,600,000)
Fiscal Year 1984: ¥3,800,000 (Direct Cost: ¥3,800,000)
KeywordsHIGHLY LOADED COAL SLURRY / THREE PHASE SLURRY / SLURRY INVOLVING GAS / THIXOTROPY SUSPENSION FLOW / サスペンジョンの流動 / クリーン燃焼法 / 石炭 / スラリー / 高濃度サスペンジョン / 流動性 / 安定性 / 3相スラリー / 静電気 / 超音波吸収能
Research Abstract

Recently, highly loaded coal-water mixtures have been taken as relatively new fuels into consideration from economical standpoints of view. Its fuel, however, has many problems to be improved, i.e., reduced viscosity of highly concentrated coal slurry, stability maintained as a slurry fuel during more than one month and so forth.
In the present investigation, focus is on preparation of three phase slurry composed of coal, gas and water and on its rheological behavior such as apparent slurry-viscosity and its dynamic stability. From these approaches, we have obtained the results as follows : At first, based on survey of published literatures, the most important problems to be solved under preparation of highly loaded coal-water slurry have been elucidated concerning limited coal-concentration of slurry and period of its stability. Secondary, thixotropical behavior of coal-water slurry has been analyzed by resorting to a stochastic approach. The model parameter proposed gives rise to quantitative representation of dynamic stability. More specifically, the relationship between its parameter and experimental conditions for slurry preparation has been proposed. The third is that measurements of apparent viscosity in the higher range of shear rate have been made by means of the micro-cylindrical viscometer and a method of preparation of coal-water slurry including micro-bubbles has been discovered experimentally. The last is that rheological properties of coal-gas-water slurry have been studied. The propensity of the slurry-expansion to temperature has been provided quantitatively. Moreover, the ratio of gas phase to slurry volume have been measured by means of relatively new supersonic system.
The results mentioned above have leaded to the strategies of design for preparation in the system under consideration.

Report

(2 results)
  • 1986 Final Research Report Summary
  • 1985 Annual Research Report

Research Products

(8 results)

All Other

All Publications

  • [Publications] 堀尾正靭: 燃料協会誌. 65. 136-142 (1986)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1986 Final Research Report Summary
  • [Publications] Nobuetsu YUTANI: Fuel.

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1986 Final Research Report Summary
  • [Publications] Naoshi OTOTAKE: "Rheology on Concentrated CWMS" J. of Fuel, Japan. 64. 156-165 (1985)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1986 Final Research Report Summary
  • [Publications] Masayuki HORIO: "The Properties of Highly Loaded Coal-Gas-Water Slurry" J. of Fuel, Japan. 65. 136-142 (1986)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1986 Final Research Report Summary
  • [Publications] Nobuetsu YUTANI: "Apparent Viscosity of Highly Loaded Coal Water Slurry Containg Microscopic Bubbles" Fuel. (1987)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1986 Final Research Report Summary
  • [Publications] 堀尾,他: 燃料協会誌. 65-2. (1986)

    • Related Report
      1985 Annual Research Report
  • [Publications] 吉田,千場,堀尾: 化工協会第51年会. (1986)

    • Related Report
      1985 Annual Research Report
  • [Publications] 油谷: 第4回混相流国際シンポ(U.S.A). (1986)

    • Related Report
      1985 Annual Research Report

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Published: 1987-03-30   Modified: 2016-04-21  

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