JPS57119989A - Dehydrating method for water-containing coal - Google Patents

Dehydrating method for water-containing coal

Info

Publication number
JPS57119989A
JPS57119989A JP590881A JP590881A JPS57119989A JP S57119989 A JPS57119989 A JP S57119989A JP 590881 A JP590881 A JP 590881A JP 590881 A JP590881 A JP 590881A JP S57119989 A JPS57119989 A JP S57119989A
Authority
JP
Japan
Prior art keywords
slurry
water
coal
solvent
pressure
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP590881A
Other languages
Japanese (ja)
Inventor
Shoichi Oi
Tadanobu Takada
Shigemi Nagayoshi
Isao Kubo
Tsugio Sakata
Akiyoshi Sasaki
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
MITSUI SEKITAN EKIKA KK
Mitsui Mining Co Ltd
Original Assignee
MITSUI SEKITAN EKIKA KK
Mitsui Mining Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by MITSUI SEKITAN EKIKA KK, Mitsui Mining Co Ltd filed Critical MITSUI SEKITAN EKIKA KK
Priority to JP590881A priority Critical patent/JPS57119989A/en
Publication of JPS57119989A publication Critical patent/JPS57119989A/en
Pending legal-status Critical Current

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Abstract

PURPOSE: To dehydrate water-containing coal at a low temperature under a low pressure in a short time, by heating solvent slurry of the water-containing coal to a specific temperature or lower under a pressure, cooling it to a specific temperature or lower and subsequently introducing it into a separating device under a specific pressure or lower.
CONSTITUTION: Water-containing coal and a solvent are mixed to be slurried on a grinder 1, and the slurry is pressurzed by a pump 7 before heated to 150W 350°C by a preheater 2. Water contained in coal is readly dispersed into the solvent, and coal itself becomes lipophilic, so that the coal hardly absorbs water. Subsequently, the slurry is cooled to 200°C or lower by running it through a heat exchanger 3 or without doing so, and then the slurry is separated into one solvent flow containing a large amount of water and the other solvent flow that has been dehydrated and contains coal. The former slurry is sent to a water layer-separating tank 5, in which the slurry is left to stand under a pressure higher than the saturated vapor-pressure of water to separate the water layer and the solvent layer. The latter slurry is introduced into a gas-liquid separator 6, in which the remaining moisture in the slurry is evaporated by the heat energy of this flow, thereby producing much less moisture-containing slurry. This slurry is used as a fuel or as a raw material for coal liquefaction.
COPYRIGHT: (C)1982,JPO&Japio
JP590881A 1981-01-20 1981-01-20 Dehydrating method for water-containing coal Pending JPS57119989A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP590881A JPS57119989A (en) 1981-01-20 1981-01-20 Dehydrating method for water-containing coal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP590881A JPS57119989A (en) 1981-01-20 1981-01-20 Dehydrating method for water-containing coal

Publications (1)

Publication Number Publication Date
JPS57119989A true JPS57119989A (en) 1982-07-26

Family

ID=11623991

Family Applications (1)

Application Number Title Priority Date Filing Date
JP590881A Pending JPS57119989A (en) 1981-01-20 1981-01-20 Dehydrating method for water-containing coal

Country Status (1)

Country Link
JP (1) JPS57119989A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006319595A (en) * 2005-05-12 2006-11-24 Audio Technica Corp Method of manufacturing ribbon microphone

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5616588A (en) * 1979-07-20 1981-02-17 Mitsui Mining Co Ltd Preparation of mixed composition of dehydrated brown coal and hydrocarbon oil
JPS5616589A (en) * 1979-07-20 1981-02-17 Mitsui Mining Co Ltd Treatment of water-containing coal

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5616588A (en) * 1979-07-20 1981-02-17 Mitsui Mining Co Ltd Preparation of mixed composition of dehydrated brown coal and hydrocarbon oil
JPS5616589A (en) * 1979-07-20 1981-02-17 Mitsui Mining Co Ltd Treatment of water-containing coal

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006319595A (en) * 2005-05-12 2006-11-24 Audio Technica Corp Method of manufacturing ribbon microphone

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