METHOD FOR PRODUCING A CONCENTRATED AQUEOUS SODIUM HYDROXIDE SOLUTION AND FOR TREATING A SODIUM CARBONATE PURGE
A method for treating a purge stream derived from a sodium carbonate, sesquicarbonate, wegsheiderite, or bicarbonate crystallizer,said purge stream comprising sodium carbonate and/or sodium bicarbonate and at least 1 % by weight of sodium chloride and/or sodium sulfate,the method comprising :- caust...
Gespeichert in:
1. Verfasser: | |
---|---|
Format: | Patent |
Sprache: | eng ; pol |
Schlagworte: | |
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 | VANDENDOREN, ALAIN |
description | A method for treating a purge stream derived from a sodium carbonate, sesquicarbonate, wegsheiderite, or bicarbonate crystallizer,said purge stream comprising sodium carbonate and/or sodium bicarbonate and at least 1 % by weight of sodium chloride and/or sodium sulfate,the method comprising :- causticizing at least 50 mol. % of the sodium from sodium carbonate and/or sodium bicarbonate into a caustic solution and into a calcium carbonate mud with lime and water,- separating the calcium carbonate mud from the caustic solution;- concentrating the caustic solution by removing part of the water to obtain a concentrated caustic solution comprising at least 25 % NaOH, and a crystallized solid comprising sodium carbonate and sodium chloride and/or sulfate,- separating the crystallized solid from the concentrated caustic solution, said crystallized solid to be disposed of or to be further valorized,- recycling part of the concentrated caustic solution to the sodium carbonate, sesquicarbonate, wegsheiderite, or bicarbonate crystallizer. |
format | Patent |
fullrecord | <record><control><sourceid>epo_EVB</sourceid><recordid>TN_cdi_epo_espacenet_PL3196165TT3</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>PL3196165TT3</sourcerecordid><originalsourceid>FETCH-epo_espacenet_PL3196165TT33</originalsourceid><addsrcrecordid>eNqNzMEKgkAQxnEvHaJ6h-kBOogkdNx2R3dBd2ychTqJxHaKFOz9SdAH6PTBx5_fNhlqFEsGCmJomEzQzpegQJPX6IWVoAF1C0ihhZaMCzXYh2G6O4PzUQVx5EH5hRBGJYuwxlrxlfzMQBO4xH2yefXvKR7W3SXHAkXbUxyHLk5j_4yf-O2aKksveZqfRbLsn-YHvJE4KQ</addsrcrecordid><sourcetype>Open Access Repository</sourcetype><iscdi>true</iscdi><recordtype>patent</recordtype></control><display><type>patent</type><title>METHOD FOR PRODUCING A CONCENTRATED AQUEOUS SODIUM HYDROXIDE SOLUTION AND FOR TREATING A SODIUM CARBONATE PURGE</title><source>esp@cenet</source><creator>VANDENDOREN, ALAIN</creator><creatorcontrib>VANDENDOREN, ALAIN</creatorcontrib><description>A method for treating a purge stream derived from a sodium carbonate, sesquicarbonate, wegsheiderite, or bicarbonate crystallizer,said purge stream comprising sodium carbonate and/or sodium bicarbonate and at least 1 % by weight of sodium chloride and/or sodium sulfate,the method comprising :- causticizing at least 50 mol. % of the sodium from sodium carbonate and/or sodium bicarbonate into a caustic solution and into a calcium carbonate mud with lime and water,- separating the calcium carbonate mud from the caustic solution;- concentrating the caustic solution by removing part of the water to obtain a concentrated caustic solution comprising at least 25 % NaOH, and a crystallized solid comprising sodium carbonate and sodium chloride and/or sulfate,- separating the crystallized solid from the concentrated caustic solution, said crystallized solid to be disposed of or to be further valorized,- recycling part of the concentrated caustic solution to the sodium carbonate, sesquicarbonate, wegsheiderite, or bicarbonate crystallizer.</description><language>eng ; pol</language><subject>CHEMISTRY ; COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM,RUBIDIUM, CAESIUM, OR FRANCIUM ; INORGANIC CHEMISTRY ; METALLURGY</subject><creationdate>2021</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&date=20211213&DB=EPODOC&CC=PL&NR=3196165T3$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,776,881,25542,76290</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20211213&DB=EPODOC&CC=PL&NR=3196165T3$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>VANDENDOREN, ALAIN</creatorcontrib><title>METHOD FOR PRODUCING A CONCENTRATED AQUEOUS SODIUM HYDROXIDE SOLUTION AND FOR TREATING A SODIUM CARBONATE PURGE</title><description>A method for treating a purge stream derived from a sodium carbonate, sesquicarbonate, wegsheiderite, or bicarbonate crystallizer,said purge stream comprising sodium carbonate and/or sodium bicarbonate and at least 1 % by weight of sodium chloride and/or sodium sulfate,the method comprising :- causticizing at least 50 mol. % of the sodium from sodium carbonate and/or sodium bicarbonate into a caustic solution and into a calcium carbonate mud with lime and water,- separating the calcium carbonate mud from the caustic solution;- concentrating the caustic solution by removing part of the water to obtain a concentrated caustic solution comprising at least 25 % NaOH, and a crystallized solid comprising sodium carbonate and sodium chloride and/or sulfate,- separating the crystallized solid from the concentrated caustic solution, said crystallized solid to be disposed of or to be further valorized,- recycling part of the concentrated caustic solution to the sodium carbonate, sesquicarbonate, wegsheiderite, or bicarbonate crystallizer.</description><subject>CHEMISTRY</subject><subject>COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM,RUBIDIUM, CAESIUM, OR FRANCIUM</subject><subject>INORGANIC CHEMISTRY</subject><subject>METALLURGY</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2021</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNqNzMEKgkAQxnEvHaJ6h-kBOogkdNx2R3dBd2ychTqJxHaKFOz9SdAH6PTBx5_fNhlqFEsGCmJomEzQzpegQJPX6IWVoAF1C0ihhZaMCzXYh2G6O4PzUQVx5EH5hRBGJYuwxlrxlfzMQBO4xH2yefXvKR7W3SXHAkXbUxyHLk5j_4yf-O2aKksveZqfRbLsn-YHvJE4KQ</recordid><startdate>20211213</startdate><enddate>20211213</enddate><creator>VANDENDOREN, ALAIN</creator><scope>EVB</scope></search><sort><creationdate>20211213</creationdate><title>METHOD FOR PRODUCING A CONCENTRATED AQUEOUS SODIUM HYDROXIDE SOLUTION AND FOR TREATING A SODIUM CARBONATE PURGE</title><author>VANDENDOREN, ALAIN</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_PL3196165TT33</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng ; pol</language><creationdate>2021</creationdate><topic>CHEMISTRY</topic><topic>COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM,RUBIDIUM, CAESIUM, OR FRANCIUM</topic><topic>INORGANIC CHEMISTRY</topic><topic>METALLURGY</topic><toplevel>online_resources</toplevel><creatorcontrib>VANDENDOREN, ALAIN</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>VANDENDOREN, ALAIN</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>METHOD FOR PRODUCING A CONCENTRATED AQUEOUS SODIUM HYDROXIDE SOLUTION AND FOR TREATING A SODIUM CARBONATE PURGE</title><date>2021-12-13</date><risdate>2021</risdate><abstract>A method for treating a purge stream derived from a sodium carbonate, sesquicarbonate, wegsheiderite, or bicarbonate crystallizer,said purge stream comprising sodium carbonate and/or sodium bicarbonate and at least 1 % by weight of sodium chloride and/or sodium sulfate,the method comprising :- causticizing at least 50 mol. % of the sodium from sodium carbonate and/or sodium bicarbonate into a caustic solution and into a calcium carbonate mud with lime and water,- separating the calcium carbonate mud from the caustic solution;- concentrating the caustic solution by removing part of the water to obtain a concentrated caustic solution comprising at least 25 % NaOH, and a crystallized solid comprising sodium carbonate and sodium chloride and/or sulfate,- separating the crystallized solid from the concentrated caustic solution, said crystallized solid to be disposed of or to be further valorized,- recycling part of the concentrated caustic solution to the sodium carbonate, sesquicarbonate, wegsheiderite, or bicarbonate crystallizer.</abstract><oa>free_for_read</oa></addata></record> |
fulltext | fulltext_linktorsrc |
identifier | |
ispartof | |
issn | |
language | eng ; pol |
recordid | cdi_epo_espacenet_PL3196165TT3 |
source | esp@cenet |
subjects | CHEMISTRY COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM,RUBIDIUM, CAESIUM, OR FRANCIUM INORGANIC CHEMISTRY METALLURGY |
title | METHOD FOR PRODUCING A CONCENTRATED AQUEOUS SODIUM HYDROXIDE SOLUTION AND FOR TREATING A SODIUM CARBONATE PURGE |
url | https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2025-02-03T05%3A13%3A40IST&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=VANDENDOREN,%20ALAIN&rft.date=2021-12-13&rft_id=info:doi/&rft_dat=%3Cepo_EVB%3EPL3196165TT3%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 |