用二氧化硫法处理炼油厂碱渣  

USING SO_2 TO DEAL WITH OIL REFINING ALKALI WASTE

作　　者：才庆玲 

机构地区：[1]辽宁省葫芦岛市环境保护科学研究所,辽宁葫芦岛125000

出　　处：《石油化工安全环保技术》2007年第2期56-57,共2页Petrochemical Safety and Environmental Protection Technology

摘　　要：用炼油厂的碱渣与二氧化硫烟气进行中和反应，当反应液pH达到5～6时静止分层，上层有机相蒸馏回收粗酚，下层水相调节pH到8，经蒸发、浓缩回收无水亚硫酸钠。该工艺可使碱渣全部回收利用，同时可使排放烟气中二氧化硫浓度从15000mg／m^3降至1000mg/m^3，去除率为94％以上。The alkali waste of refineries reacts with SO2 flue gas for neutralization, and the reaction liquid quiesces and demixes when the pH indicator is 5 or 6. The superstratum organic liquid was distilled to reclaim roughhewn hydroxybenzene, and the pH of substrate water was adjusted to 8 and anhydrous sodium sulfite (Na2SO3) is reclaimed by distillation and inspissation. This technique can reclaim all alkali dregs and reduce the SO2 concentration in flue gas from 15000mg/m3 to 1000mg/m3. The removal rate is over 94%.

关 键 词：炼油碱渣 二氧化硫烟气 综合利用 

分 类 号：X742[环境科学与工程—环境工程]