膜科学与技术
膜科學與技術
막과학여기술
MEMBRANE SCIENCE AND TECHNOLOGY
2001年
2期
66-69
,共4页
双极性膜%电渗析%硅溶胶
雙極性膜%電滲析%硅溶膠
쌍겁성막%전삼석%규용효
报道了双极性膜电渗析取代现行工艺中泡花碱转化成硅溶胶的酸化过程的研究.转化得到的硅溶胶中SiO2含量达到6%~10%,pH值在3以下,平均电流效率在55%~75%范围内,平均耗电低于1 kW*h/kg(每千克硅溶胶),制得的硅溶胶产品符合工业要求.
報道瞭雙極性膜電滲析取代現行工藝中泡花堿轉化成硅溶膠的痠化過程的研究.轉化得到的硅溶膠中SiO2含量達到6%~10%,pH值在3以下,平均電流效率在55%~75%範圍內,平均耗電低于1 kW*h/kg(每韆剋硅溶膠),製得的硅溶膠產品符閤工業要求.
보도료쌍겁성막전삼석취대현행공예중포화감전화성규용효적산화과정적연구.전화득도적규용효중SiO2함량체도6%~10%,pH치재3이하,평균전류효솔재55%~75%범위내,평균모전저우1 kW*h/kg(매천극규용효),제득적규용효산품부합공업요구.
A new technology, bipolar membrane electrodialysis(BME), was developed to convert sodium silicate(Na2SO3) into silicasol (H2SO3). By optimizing the operation condition, one can easily obtain the product with desired SiO2 content about 6%~10% and pH value about 3. In this new process, the average efficiency of electric current is 55%~75% and the power cost is less than 1 kW*h/(kg silicasol). So it provides a attractive method for the production of silicasol.