电解海水制氯

电解海水制氯ElectrolyzedSeaWaterChlorination西北发电运行有限责任公司ShaanxiNorthwestPowerGenerationOperationCo.,Ltd.电解海水制氯ElectrolyzedSeaWaterChlorination本期工程实际流程如下：Theactualflowoftheengineeringinthisphaseisasfollows:海水→预过滤器→海水泵→自动冲洗过滤器→次氯酸钠发生器→贮存箱→投药泵→加药点Seawater→Prefilter→Seawaterpump→Automaticflushingfilter→Sodiumhypochloritegenerator→Storagetank→Chemicaldosingpump→Chemicaldosingpoint工作原理WorkingPrinciple海水注入一电解槽中,在直流电的作用下有如下反应:Whenseawaterisinjectedtoanelectrolysisbath,thefollowingreactionshappenundertheeffectofDCpower:电离反应:NaCl====Na＋ClH2O====H＋OHIonizationreaction:NaCl====Na＋ClH2O====H＋OH电化反应:阳极2Cl－2eCl2阴极2H＋2eH2Electrochemicalreaction:anode2Cl－2eCl2cathode2H＋2eH2溶液中化学反应:Na＋OHNaOH2NaOH＋Cl2NaClO＋NaCl＋H2OChemicalreactionsinsolution:Na+OHNaOH2NaOH＋Cl2NaClO＋NaCl＋H2O总反应:NaCl＋H2O电解NaClO＋H2Overallreaction:NaCl＋H2OelectrolysisNaClO＋H2海水预过滤器SeaWaterPrefilter功能:Function:去除较大颗粒的杂质toremovelarge-sizedimpurities数量:Quantity:33出力:Output:120m3/h120m3/h滤网精度：Precisionoffiltrationscreen1mm1mm自动冲洗海水过滤器AutomaticFlushingSeaWaterFilter功能:Function:去除小颗粒杂质toremovesmall-sizedimpurities数量:Quantity:33出力:Output:60m3/h60m3/h滤网精度：Precisionoffiltrationscreen:0.5mm0.5mm海水自动冲洗过滤器的反洗过程由过滤器进出口压差开关控制。当压差超过设定值时，自动洗程序开始冲洗滤网上的污物。Thebackwashingprocessthatseawaterautomaticallyflushesfilteriscontrolledbytheinletandoutletpressuredifferenceswitchofthefilter.Whenthepressuredifferenceexceedsthesetpoint,theautomaticwashingprogramstartstoflushdirtonthefiltrationscreen.次氯酸钠发生器SodiumHypochloriteGenerator发生器的结构:Generatorstructure:板网式透明Board-nettypeandtransparent数量:Quantity:2套2sets有效氯产率:Effectivechlorineyield:≥90kg/h.套≥90kg/h.ofoneset有效氯浓度：Effectivechlorineconcentration:≥1700ppm≥1700ppm阳极寿命:Anodelife:≥5年≥5years阴极寿命:Cathodelife:≥40年≥40years工作电流：Workingcurrent:6050A6050A工作电压：Workingvoltage:63V63V析氯电位Chlorineevolutionpotential≤1.13V（S.C.E）≤1.13V（S.C.E）交流电耗ACpowerconsumption:≤4.25kW.h/kg≤4.25kW.h/kg直流电耗DCpowerconsumption:≤3.75kW.h/kg≤3.75kW.h/kg电极材料:Electrodematerial:DSA阳极(美国/意大利STDNDSAanode(America/ItaliaSTDN)专利产品)哈式合金C(Patentedproduct)HardgrovealloyC材料(美国进口产品)Material(ImportedproductfromAmerica)酸洗周期:Acidcleaningperiod:≥720h≥720h系统中实施的控制及安全保护如下:ControlandSafetyProtectionImplementedinTheSystem:（1）贮存罐液位达到高位时(90%),自动启动投药泵,投至低位时(10%),自动停投药泵。(1)Whenthelevelinthestoragetankgetstothehighlevel(90%),thesystemautomaticallystartsupthechemicaldosingpump;whenitgetstothelowlevel(10%),thesystemautomaticallystopsthechemicaldosingpump.（2）投药泵与泵出口电动阀连锁。(2)Chemicaldosingpupandthemotorvalveatthepumpoutletareinterlocking.（3）发生器电解液出口温度超过40℃,系统控制柜发出声光报警信号;超过42℃且时间超过5秒,自动切断整流器电源。(3)Thesystemcontrolcabinetwillsendoutavisualandaudiblealarmsignalwhentheoutlettemperatureofgeneratorelectrolyteexceeds40℃;thepowersupplyofrectifierisautomaticallycutoffwhenthetemperatureexceeds42℃formorethan5seconds.（4）发生器电解槽压力高且时间超过5秒时停稀盐水泵,并切断整流器电源。(4)Whenthepressureofgeneratorelectrolysisbathishighandthetimeexceeds5seconds,stopthedilutebrinepumpandcuroffthepowersupplyofrectifier.（5）发生器电解液流量低于40%且时间超过30秒,系统控制柜发出声光报警信号;低于25%且时间超过10秒,自动停机。(5)Whentheflowofgeneratorelectrolyteislowerthan40%for30seconds,thesystemcontrolcabinetwillsendoutavisualandaudiblealarmsignal;whenitislowerthan25%formorethan10seconds,itautomaticallyshutsdown.（6）风机与整流电源连锁，当风机未启动时,不能启动整流器。(6)Theairfanandrectificationpowersupplyareinterlocking;iftheairfanisnotstartedup,therectifiercannotbestartedup.（7）海水泵与整流电源连锁,当海水泵未启动时,不能启动整流器。(7)Theseawaterpumpandrectificationpowersupplyareinterlocking;therectifiercannotbestartedupiftheseawaterpumpisnotstartedup.（8）发生器累计工作720小时提醒酸洗，此时发生器可继续工作8小时,8小时后必须酸洗,否则整流电源无法启动。(8)Remindacidcleaningifthegeneratorworksfor720hoursinaccumulation;thegeneratorcancontinuouslyworkfor8hoursatthistime;acidcleaningmustbedoneafter8hours,ortherectificationpowersupplycannotbestarted.（9）当水泵、风机等发生故障(如缺相、过载)时,自动切断故障电机的电源。(9)Thesystemautomaticallycutsoffthepowersupplyofthefaultmotorwhenwaterpumpandairfanandsoonareinfault(suchaslackingofphaseandoverload).（10）当整流电源快熔熔断及可控硅元件高温时,系统自动切断整流电源主回路。(10)Thesystemautomaticallycutsoffthemainloopofrectificationpowersupplywhenfastactingfuseoftherectificationpowersupplyfusesandthecontrollablesiliconelementsareathightemperature.