螯合树脂塔再生操作优化

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*830019。TQ114.261B1008-133X201503-0007-04Optimaloperationofregeneratingchelating-resintowersLINaPANGZhiqiangXinjiangHuataiHeavyChemicalCo.Ltd.Urumqi830019ChinaKeywordsbrinerefiningchelating-resintowerregenerationoptimizationAbstractXinjiangHuataiHeavyChemicalCo.Ltd.operatedchelating-resintowerstocarryoutthesecondaryrefiningofbrine.Problemsofinfluencingsafeandstableproductionoccurredwhenthechela-ting-resintowerswasregeneratedaccordingtotheoperationproceduresprovidedbymanufacturer.Theseproblemsweresolvedthroughoptimizingoperationprocedures.“”370t/a50t/a。33#30t/a。1。3.2m9.5m319。1。1。1.1、、、Ca2+、Mg2+。ρNaCl300.00~320.00g/L45.0~65.0℃pH9~11ρCa2++ρMg2+≤3.000mg/LρSO2-4≤7.00g/LρSS≤1.0mg/L0。751320153Chlor-AlkaliIndustryVol.51No.3Mar.2015*1985—2009。2014-02-10。1Fig.1Processflowdiagramofsecondaryrefiningofbrine1.2—COONa—COO—Na++1+2+2。Ca2+、Mg2+、Fe2+N、OCa2+、Mg2+、Fe2+1。M2++2R—CH2NCH2—COONaCH2—CONaO+M→2+R—CH2NCH2—COOMCH2—COO+2Na+。11.324h。。、、、。ρNaCl300.00~320.00g/LρCa2+≤0.020mg/LρMg2+≤0.020mg/LρFe2+≤0.02mg/LρSS≤1.0mg/L。2+2。HClNaOH+22。2.11HClH+2“”R—CH2NCH2—COOMCH2—COO→+2HClR—CH2NCH2—COOHCH2—COHO+MCl2。28檵檵檵檵檵檵檵檵殝殝殝殝20152.219、、1。1Table1Regenerationstatusofchelating-resintowers/m3/h/min1——0.52187.2515.03179.9810.041481.803.051——10.0627.4160.07279.9830.082——10.09HClHCl①30.9260.010HCl27.4140.011287.2515.012NaOHNaOH②41.0620.01336.3610.0142481.8010.0153——10.016NaOH39.7140.0173481.803.0184——10.019232.002.8①HCl4%②NaOH5%。2.35。1。2。。。。。3NaOH“”。R—CH2NCH2—COOHCH2—COHO→+2NaOHR—CH2NCH2—COONaCH2—CONaO+2H2O。34。5。。6。。。2.45。190m3/h。2200m3/h40min。1。。。193檵檵檵檵檵檵檵檵殝殝殝殝。390m3/h。415316NaOH。53。。2。2Fig.2Comparisonofconcentrationofsecondarilyrefinedbrinebeforeandafterimprovement。45%3。60%4。31h。。50%。1—20131026T18192—20131027T00193—20131027T06094—20131027T06195—20131027T12196—20131027T18193Fig.3Changeinlevelofultra-purebrinetankbeforeimprovement1—20140110T18192—20140111T00193—20140111T06194—20140111T08195—20140111T12196—20140111T18194Fig.4Changeinlevelofultra-purebrinetankafterimprovement1.J.2003106-8.2.J.2011471210-11.01檵檵檵檵檵檵檵檵殝殝殝殝2015

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