离子膜电解工艺指标的制定

Institution of Technical Index in Ion Coating Electrolysis

分析了离子膜电解工艺指标对运行过程的影响 ,制定出为确保离子膜长期稳定运行的各工艺指标的范围 :进槽盐水为pH >3.0 ,NaClO3<15g L ,Na2 SO4 <7g L ,Ca +Mg <2× 10 - 8,I <5× 10 - 7,SiO2 <1× 10 - 5,Mn <5× 10 - 8,TOC <1× 1- 5,SS <1× 10 - 6 ,Sr>2× 10 - 8,Ba <5× 10 - 8,Fe <1× 10 - 6 ,Al<1× 10 - 7,Ni<1× 10 - 8,F <1× 10 - 6 ;碱液质量分数为 ( 32 .5± 0 .5 ) % ;阳极液质量浓度为 2 2 0～ 2 30g L ;槽温在电流为 12 .5kA时为 ( 85± 2 .5 )℃。

Effect of the technical index in ion coating electrolysis on operational aspect was analysed. Bounds of each technical index to insure long steady circulate of ion coating electrolysis were institued: enter brine pH>3.0,NaClO 3<15 g/L,Na 2SO 4<7 g/L,Ca+Mg<2×10 -8 ,I<5×10 -7 ,SiO 2<1×10 -5 ,Mn<5×10 -8 ,TOC<1×10 -5 ,SS<1×10 -5 ,Sr<2×10 -8 ,Ba<5×10 -8 ,Fe<1×10 -6 ,Al<1×10 -7 ,Ni<1×10 -8 ,F<1×10 -6 ;mass fraction of alkalescent liquor was (32.5±0.5) %;mass concentration of anodic liquor was 220～230 g/L; when current was 12.5 kA,temperature of tank was (85±2.5) ℃.