Title:
DEHYDRATING AGENT FOR COAL SLURRY
Document Type and Number:
Japanese Patent JPS5871994
Kind Code:
A
Abstract:
PURPOSE: A dehydrating agent that contains a specific hydrocarbon, thus permitting high-efficient dehydration and deashing of fine-powder coal slurry especially.
CONSTITUTION: The objective dehydrating agent contains a compound of the formula (A is compound with at least one active hydrogen; X is 3W10; R is 2W 600; S is 2W700; Z is 1W50) with a molecular weight of 8,000W50,000, preferably 10,000W40,000 and an HLB of 5W15. The agent is added to a coal slurry usually by 0.01W3.0wt%, preferably 0.02W2.0wt%. The group A in the above formula is, e.g., an alcohol, ammonia, an amine, a phenol, a carboxylic acid, an alkanolamine or a mercaptan.
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| JPS57167394 | PREPARATION OF PULVERIZED COAL |
Inventors:
YUKIMURA KAZUSHI
IMAMURA TAKEHISA
OGURA YOSHIKAZU
MIZUNO YASUNOBU
HIRAYAMA MASAO
IMAMURA TAKEHISA
OGURA YOSHIKAZU
MIZUNO YASUNOBU
HIRAYAMA MASAO
Application Number:
JP16974681A
Publication Date:
April 28, 1983
Filing Date:
October 22, 1981
Export Citation:
Assignee:
NEOS KK
International Classes:
C10L5/00; B01D12/00; C10L9/00; (IPC1-7): B01D12/00; C10L5/00; C10L9/00
Domestic Patent References:
| JPS5656205A | 1981-05-18 | |||
| JPS5370076A | 1978-06-22 | |||
| JPS56122892A | 1981-09-26 | |||
| JPS56125486A | 1981-10-01 | |||
| JPS56125487A | 1981-10-01 | |||
| JPS5817196A | 1983-02-01 |
Attorney, Agent or Firm:
Aoyama