METHOD FOR REMOVING TRACE OF COMPONENT IN AQUEOUS LIQUID BY EVAPORATION AND DEVICE THEREOF

METHOD FOR REMOVING TRACE OF COMPONENT IN AQUEOUS LIQUID BY EVAPORATION AND DEVICE THEREOF

PROBLEM TO BE SOLVED: To attain economical removal by feeding an aqueous solutions containing a specific quantity of compound whose b.p. in the aqueous solutions in a specified range under the atmospheric pressure, from the upper part of an evaporation column having a rectrification effect and conti...

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Hauptverfasser: KAWASE YASUHITO, AIDA CHIZUKO, ODA AKIMASA, RIYUU HOUSHI
Format: Patent
Sprache:eng
Schlagworte:
CHEMISTRY
METALLURGY
PERFORMING OPERATIONS
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
SEPARATION
TRANSPORTING
TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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creator KAWASE YASUHITO
AIDA CHIZUKO
ODA AKIMASA
RIYUU HOUSHI
description PROBLEM TO BE SOLVED: To attain economical removal by feeding an aqueous solutions containing a specific quantity of compound whose b.p. in the aqueous solutions in a specified range under the atmospheric pressure, from the upper part of an evaporation column having a rectrification effect and continuously evaporating and removing the trace component only with sensible heat kept in the aqueous solution. SOLUTION: The aqueous solution (raw liquid) containing 1 ppb-5 wt.% compound whose b.p. in the aqueous liquid under the atmospheric pressure is >0 deg.C to
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SOLUTION: The aqueous solution (raw liquid) containing 1 ppb-5 wt.% compound whose b.p. in the aqueous liquid under the atmospheric pressure is &gt;0 deg.C to &lt;100 deg.C, passes through the inside of a heat exchange pipe 2 inside the device, and drops by gravity from the upper part of the opened pipe 2 along the outer wall, etc., of the pipe 2. Meanwhile, steam is transferred from the evaporation tower 1 to condensers 7, 9 in the evaporation tower 1 by an evacuation pump, e.g. a dry type Roots blower 8, and the inside of the evaporation tower 1 is kept in an evacuation state. Thus, the raw liquid boils at the outer side of the heat exchange pipe 2 and the trace components and one portion of water evaporate. 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SOLUTION: The aqueous solution (raw liquid) containing 1 ppb-5 wt.% compound whose b.p. in the aqueous liquid under the atmospheric pressure is &gt;0 deg.C to &lt;100 deg.C, passes through the inside of a heat exchange pipe 2 inside the device, and drops by gravity from the upper part of the opened pipe 2 along the outer wall, etc., of the pipe 2. Meanwhile, steam is transferred from the evaporation tower 1 to condensers 7, 9 in the evaporation tower 1 by an evacuation pump, e.g. a dry type Roots blower 8, and the inside of the evaporation tower 1 is kept in an evacuation state. Thus, the raw liquid boils at the outer side of the heat exchange pipe 2 and the trace components and one portion of water evaporate. The inside of the evaporation tower 1 is kept in an evacuation state and a feed heat amount is small enough and an energy source of the evaporation is basically sensible heat of the raw liquid.</abstract><edition>6</edition><oa>free_for_read</oa></addata></record>
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subjects CHEMISTRY
METALLURGY
PERFORMING OPERATIONS
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
SEPARATION
TRANSPORTING
TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
title METHOD FOR REMOVING TRACE OF COMPONENT IN AQUEOUS LIQUID BY EVAPORATION AND DEVICE THEREOF
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