Method and system for producing potassium chloride by internal circulation brine mixing and cold crystallization
The invention relates to a method for producing potassium chloride by internal circulation brine mixing and cold crystallization. The method comprises the following steps: 1, mixing E brine and F brine to obtain first-stage carnallite and a brine mixing completion solution; 2, decomposing and crysta...
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| creator | HA ZHANFANG ZHANG JIANZHONG SHI ZHONGLU CHU XITING BAO YUCUN YANG YOUPING DU PEIYING LIU XIYE QU XIAORONG YUE HONGWEI MA ZHEN ZHANG SHOUBIN ZHAO JILONG YU QIUPING |
| description | The invention relates to a method for producing potassium chloride by internal circulation brine mixing and cold crystallization. The method comprises the following steps: 1, mixing E brine and F brine to obtain first-stage carnallite and a brine mixing completion solution; 2, decomposing and crystallizing the first-stage carnallite obtain crude potassium and tail brine, wherein the tail brine comprises 2-6% of NaCl, 2.6-3.5% of KCl and 20-26% of MgCl2; 3, purifying the crude potassium to obtain potassium chloride; and 4, adjusting the tail brine by using the brine mixing completion solution to obtain modulated brine, and mixing the modulated brine with F brine to produce carnallite, wherein the deviation between the component of the modulated brine and the component of E brine is less than 5%. According to the invention, a large amount of potassium chloride in the brine blending completion solution is recovered; the adjustment end point of the prepared saline water is more accuratelycontrolled; the recovery |
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The method comprises the following steps: 1, mixing E brine and F brine to obtain first-stage carnallite and a brine mixing completion solution; 2, decomposing and crystallizing the first-stage carnallite obtain crude potassium and tail brine, wherein the tail brine comprises 2-6% of NaCl, 2.6-3.5% of KCl and 20-26% of MgCl2; 3, purifying the crude potassium to obtain potassium chloride; and 4, adjusting the tail brine by using the brine mixing completion solution to obtain modulated brine, and mixing the modulated brine with F brine to produce carnallite, wherein the deviation between the component of the modulated brine and the component of E brine is less than 5%. According to the invention, a large amount of potassium chloride in the brine blending completion solution is recovered; the adjustment end point of the prepared saline water is more accuratelycontrolled; the recovery</description><language>chi ; eng</language><subject>CHEMISTRY ; COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM,RUBIDIUM, CAESIUM, OR FRANCIUM ; INORGANIC CHEMISTRY ; METALLURGY</subject><creationdate>2020</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=20201229&DB=EPODOC&CC=CN&NR=112142072A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,776,881,25542,76290</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20201229&DB=EPODOC&CC=CN&NR=112142072A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>HA ZHANFANG</creatorcontrib><creatorcontrib>ZHANG JIANZHONG</creatorcontrib><creatorcontrib>SHI ZHONGLU</creatorcontrib><creatorcontrib>CHU XITING</creatorcontrib><creatorcontrib>BAO YUCUN</creatorcontrib><creatorcontrib>YANG YOUPING</creatorcontrib><creatorcontrib>DU PEIYING</creatorcontrib><creatorcontrib>LIU XIYE</creatorcontrib><creatorcontrib>QU XIAORONG</creatorcontrib><creatorcontrib>YUE HONGWEI</creatorcontrib><creatorcontrib>MA ZHEN</creatorcontrib><creatorcontrib>ZHANG SHOUBIN</creatorcontrib><creatorcontrib>ZHAO JILONG</creatorcontrib><creatorcontrib>YU QIUPING</creatorcontrib><title>Method and system for producing potassium chloride by internal circulation brine mixing and cold crystallization</title><description>The invention relates to a method for producing potassium chloride by internal circulation brine mixing and cold crystallization. The method comprises the following steps: 1, mixing E brine and F brine to obtain first-stage carnallite and a brine mixing completion solution; 2, decomposing and crystallizing the first-stage carnallite obtain crude potassium and tail brine, wherein the tail brine comprises 2-6% of NaCl, 2.6-3.5% of KCl and 20-26% of MgCl2; 3, purifying the crude potassium to obtain potassium chloride; and 4, adjusting the tail brine by using the brine mixing completion solution to obtain modulated brine, and mixing the modulated brine with F brine to produce carnallite, wherein the deviation between the component of the modulated brine and the component of E brine is less than 5%. According to the invention, a large amount of potassium chloride in the brine blending completion solution is recovered; the adjustment end point of the prepared saline water is more accuratelycontrolled; the recovery</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>2020</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNqNjDEKwkAQRdNYiHqH8QCCiYJ1CIqNVvZhszsxA5OdZXYDxtObiAew-b957y2zcMPUiQPjHcQxJuyhFYWg4gZL_glBkomRhh5sx6LkEJoRyCdUbxgsqR3YJBIPjZJH6Ok1e3PQCk-jU9Yw0_tLrbNFazji5verbHs5P6rrDoPUGIOx6DHV1T3Pi_xY7E9FefiH-QDGpEQr</recordid><startdate>20201229</startdate><enddate>20201229</enddate><creator>HA ZHANFANG</creator><creator>ZHANG JIANZHONG</creator><creator>SHI ZHONGLU</creator><creator>CHU XITING</creator><creator>BAO YUCUN</creator><creator>YANG YOUPING</creator><creator>DU PEIYING</creator><creator>LIU XIYE</creator><creator>QU XIAORONG</creator><creator>YUE HONGWEI</creator><creator>MA ZHEN</creator><creator>ZHANG SHOUBIN</creator><creator>ZHAO JILONG</creator><creator>YU QIUPING</creator><scope>EVB</scope></search><sort><creationdate>20201229</creationdate><title>Method and system for producing potassium chloride by internal circulation brine mixing and cold crystallization</title><author>HA ZHANFANG ; ZHANG JIANZHONG ; SHI ZHONGLU ; CHU XITING ; BAO YUCUN ; YANG YOUPING ; DU PEIYING ; LIU XIYE ; QU XIAORONG ; YUE HONGWEI ; MA ZHEN ; ZHANG SHOUBIN ; ZHAO JILONG ; YU QIUPING</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_CN112142072A3</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>chi ; eng</language><creationdate>2020</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>HA ZHANFANG</creatorcontrib><creatorcontrib>ZHANG JIANZHONG</creatorcontrib><creatorcontrib>SHI ZHONGLU</creatorcontrib><creatorcontrib>CHU XITING</creatorcontrib><creatorcontrib>BAO YUCUN</creatorcontrib><creatorcontrib>YANG YOUPING</creatorcontrib><creatorcontrib>DU PEIYING</creatorcontrib><creatorcontrib>LIU XIYE</creatorcontrib><creatorcontrib>QU XIAORONG</creatorcontrib><creatorcontrib>YUE HONGWEI</creatorcontrib><creatorcontrib>MA ZHEN</creatorcontrib><creatorcontrib>ZHANG SHOUBIN</creatorcontrib><creatorcontrib>ZHAO JILONG</creatorcontrib><creatorcontrib>YU QIUPING</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>HA ZHANFANG</au><au>ZHANG JIANZHONG</au><au>SHI ZHONGLU</au><au>CHU XITING</au><au>BAO YUCUN</au><au>YANG YOUPING</au><au>DU PEIYING</au><au>LIU XIYE</au><au>QU XIAORONG</au><au>YUE HONGWEI</au><au>MA ZHEN</au><au>ZHANG SHOUBIN</au><au>ZHAO JILONG</au><au>YU QIUPING</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>Method and system for producing potassium chloride by internal circulation brine mixing and cold crystallization</title><date>2020-12-29</date><risdate>2020</risdate><abstract>The invention relates to a method for producing potassium chloride by internal circulation brine mixing and cold crystallization. The method comprises the following steps: 1, mixing E brine and F brine to obtain first-stage carnallite and a brine mixing completion solution; 2, decomposing and crystallizing the first-stage carnallite obtain crude potassium and tail brine, wherein the tail brine comprises 2-6% of NaCl, 2.6-3.5% of KCl and 20-26% of MgCl2; 3, purifying the crude potassium to obtain potassium chloride; and 4, adjusting the tail brine by using the brine mixing completion solution to obtain modulated brine, and mixing the modulated brine with F brine to produce carnallite, wherein the deviation between the component of the modulated brine and the component of E brine is less than 5%. According to the invention, a large amount of potassium chloride in the brine blending completion solution is recovered; the adjustment end point of the prepared saline water is more accuratelycontrolled; the recovery</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | CHEMISTRY COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM,RUBIDIUM, CAESIUM, OR FRANCIUM INORGANIC CHEMISTRY METALLURGY |
| title | Method and system for producing potassium chloride by internal circulation brine mixing and cold crystallization |
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