Method for concentrating dilute acid

Method for concentrating dilute acid

This invention relates to a method for concentrating dilute acid containing metal sulfate in a three-stage, forced circulation evaporator system. The dilute acid is conveyed to the first stage and a concentrated sulfuric acid is drawn off from the third stage. Steam and/or vapor is used as a heating...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Hauptverfasser: KLAUS ENGELS, ROLAND FACH
Format: Patent
Sprache:eng
Schlagworte:
CHEMISTRY
COMPOUNDS THEREOF
INORGANIC CHEMISTRY
METALLURGY
NON-METALLIC ELEMENTS
PERFORMING OPERATIONS
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
SEPARATION
TRANSPORTING
Online-Zugang:Volltext bestellen
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
container_end_page
container_issue
container_start_page
container_title
container_volume
creator KLAUS ENGELS
ROLAND FACH
description This invention relates to a method for concentrating dilute acid containing metal sulfate in a three-stage, forced circulation evaporator system. The dilute acid is conveyed to the first stage and a concentrated sulfuric acid is drawn off from the third stage. Steam and/or vapor is used as a heating medium, the vapor that is not used as a heating medium being condensed. At least part of the flow of dilute acid is conveyed to the evaporator vessel of the first stage. Drops of the dilute acid to be concentrated that are carried with the vapor from the bottom of the evaporator vessel are separated in the evaporator vessel of at least one stage and of fed back into the bottom of the evaporator vessel. This results in an improvement in evaporating efficiency.
format Patent
fullrecord <record><control><sourceid>epo_EVB</sourceid><recordid>TN_cdi_epo_espacenet_AU4543900A</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>AU4543900A</sourcerecordid><originalsourceid>FETCH-epo_espacenet_AU4543900A3</originalsourceid><addsrcrecordid>eNrjZFDxTS3JyE9RSMsvUkjOz0tOzSspSizJzEtXSMnMKS1JVUhMzkzhYWBNS8wpTuWF0twM8m6uIc4euqkF-fGpxQWJQG2pJfGOoSamJsaWBgaOxoRVAAB33iXy</addsrcrecordid><sourcetype>Open Access Repository</sourcetype><iscdi>true</iscdi><recordtype>patent</recordtype></control><display><type>patent</type><title>Method for concentrating dilute acid</title><source>esp@cenet</source><creator>KLAUS ENGELS ; ROLAND FACH</creator><creatorcontrib>KLAUS ENGELS ; ROLAND FACH</creatorcontrib><description>This invention relates to a method for concentrating dilute acid containing metal sulfate in a three-stage, forced circulation evaporator system. The dilute acid is conveyed to the first stage and a concentrated sulfuric acid is drawn off from the third stage. Steam and/or vapor is used as a heating medium, the vapor that is not used as a heating medium being condensed. At least part of the flow of dilute acid is conveyed to the evaporator vessel of the first stage. Drops of the dilute acid to be concentrated that are carried with the vapor from the bottom of the evaporator vessel are separated in the evaporator vessel of at least one stage and of fed back into the bottom of the evaporator vessel. This results in an improvement in evaporating efficiency.</description><edition>7</edition><language>eng</language><subject>CHEMISTRY ; COMPOUNDS THEREOF ; INORGANIC CHEMISTRY ; METALLURGY ; NON-METALLIC ELEMENTS ; PERFORMING OPERATIONS ; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL ; SEPARATION ; TRANSPORTING</subject><creationdate>2000</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&amp;date=20001121&amp;DB=EPODOC&amp;CC=AU&amp;NR=4543900A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25563,76318</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&amp;date=20001121&amp;DB=EPODOC&amp;CC=AU&amp;NR=4543900A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>KLAUS ENGELS</creatorcontrib><creatorcontrib>ROLAND FACH</creatorcontrib><title>Method for concentrating dilute acid</title><description>This invention relates to a method for concentrating dilute acid containing metal sulfate in a three-stage, forced circulation evaporator system. The dilute acid is conveyed to the first stage and a concentrated sulfuric acid is drawn off from the third stage. Steam and/or vapor is used as a heating medium, the vapor that is not used as a heating medium being condensed. At least part of the flow of dilute acid is conveyed to the evaporator vessel of the first stage. Drops of the dilute acid to be concentrated that are carried with the vapor from the bottom of the evaporator vessel are separated in the evaporator vessel of at least one stage and of fed back into the bottom of the evaporator vessel. This results in an improvement in evaporating efficiency.</description><subject>CHEMISTRY</subject><subject>COMPOUNDS THEREOF</subject><subject>INORGANIC CHEMISTRY</subject><subject>METALLURGY</subject><subject>NON-METALLIC ELEMENTS</subject><subject>PERFORMING OPERATIONS</subject><subject>PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL</subject><subject>SEPARATION</subject><subject>TRANSPORTING</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2000</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZFDxTS3JyE9RSMsvUkjOz0tOzSspSizJzEtXSMnMKS1JVUhMzkzhYWBNS8wpTuWF0twM8m6uIc4euqkF-fGpxQWJQG2pJfGOoSamJsaWBgaOxoRVAAB33iXy</recordid><startdate>20001121</startdate><enddate>20001121</enddate><creator>KLAUS ENGELS</creator><creator>ROLAND FACH</creator><scope>EVB</scope></search><sort><creationdate>20001121</creationdate><title>Method for concentrating dilute acid</title><author>KLAUS ENGELS ; ROLAND FACH</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_AU4543900A3</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng</language><creationdate>2000</creationdate><topic>CHEMISTRY</topic><topic>COMPOUNDS THEREOF</topic><topic>INORGANIC CHEMISTRY</topic><topic>METALLURGY</topic><topic>NON-METALLIC ELEMENTS</topic><topic>PERFORMING OPERATIONS</topic><topic>PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL</topic><topic>SEPARATION</topic><topic>TRANSPORTING</topic><toplevel>online_resources</toplevel><creatorcontrib>KLAUS ENGELS</creatorcontrib><creatorcontrib>ROLAND FACH</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>KLAUS ENGELS</au><au>ROLAND FACH</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>Method for concentrating dilute acid</title><date>2000-11-21</date><risdate>2000</risdate><abstract>This invention relates to a method for concentrating dilute acid containing metal sulfate in a three-stage, forced circulation evaporator system. The dilute acid is conveyed to the first stage and a concentrated sulfuric acid is drawn off from the third stage. Steam and/or vapor is used as a heating medium, the vapor that is not used as a heating medium being condensed. At least part of the flow of dilute acid is conveyed to the evaporator vessel of the first stage. Drops of the dilute acid to be concentrated that are carried with the vapor from the bottom of the evaporator vessel are separated in the evaporator vessel of at least one stage and of fed back into the bottom of the evaporator vessel. This results in an improvement in evaporating efficiency.</abstract><edition>7</edition><oa>free_for_read</oa></addata></record>
fulltext fulltext_linktorsrc
identifier
ispartof
issn
language eng
recordid cdi_epo_espacenet_AU4543900A
source esp@cenet
subjects CHEMISTRY
COMPOUNDS THEREOF
INORGANIC CHEMISTRY
METALLURGY
NON-METALLIC ELEMENTS
PERFORMING OPERATIONS
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
SEPARATION
TRANSPORTING
title Method for concentrating dilute acid
url https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2025-01-11T21%3A44%3A26IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-epo_EVB&rft_val_fmt=info:ofi/fmt:kev:mtx:patent&rft.genre=patent&rft.au=KLAUS%20ENGELS&rft.date=2000-11-21&rft_id=info:doi/&rft_dat=%3Cepo_EVB%3EAU4543900A%3C/epo_EVB%3E%3Curl%3E%3C/url%3E&disable_directlink=true&sfx.directlink=off&sfx.report_link=0&rft_id=info:oai/&rft_id=info:pmid/&rfr_iscdi=true