摘要
采用苛化法对乙烯裂解废碱液进行处理,Na2CO3的苛化转化率在80%以上(平衡反应液的苛化率在90%以上);废碱液的反复再生和利用对碱液的吸收性能没有显著影响,再生碱液可以满足吸收裂解气中CO2等酸性气的要求。该工艺不但解决了乙烯废碱液的环境污染问题,而且经济效益显著,具有广泛的推广和应用价值。
Causticization was adopted to regenerate spent caustic from ethylene plant, wherein the conversion rate of sodium carbonate was over 80 % and the causticization rate of the equilibrium solution was over 90 %. The spent caustic, which had little change on its absorption efficiency after repeated regeneration and reuse, could meet the demand for absorbing sour gas (carbon dioxide etc.) in cracking gas.
出处
《炼油与化工》
2005年第1期15-18,共4页
Refining And Chemical Industry
关键词
裂解气碱洗
废碱液
苛化
吸收速率
cracking gas scrubbing
spent caustic
causticization
absorption efficiency
