会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 3. 发明授权
    • Process for removing SO.sub.2 from effluent gases and for removing heat
stable salts from systems in which they accumulate using an anion
exchange resin
    • 从排出气体中除去SO(HD 2 {B)并从使用阴离子交换树脂积累的系统除去热稳定盐的方法
    • US4170628A
    • 1979-10-09
    • US910521
    • 1978-05-30
    • Alexander J. KosseimDavid A. DunneryGilbert R. Atwood
    • Alexander J. KosseimDavid A. DunneryGilbert R. Atwood
    • B01D53/50C01B17/00
    • B01D53/501B01D53/50
    • Improvement in processes for the selective removal of sulfur dioxide with respect to carbon dioxide from a gas mixture containing same wherein the gas mixture is contacted with an aqueous absorbent solution, such as alkanolamine, alkali metal hydroxide, ammonium hydroxide or sulfites thereof, to remove sulfur dioxide from the gas mixture and form a SO.sub.2 -rich aqueous absorbent solution which is moved to a stripping zone where sulfur dioxide is driven off to form a SO.sub.2 -depleted aqueous absorbent solution which is recycled and re-contacted with the gas mixture, the improvement comprising removing sulfur oxyanions of heat stable salts which accumulate in the aqueous absorbent solution by contacting a portion of it with an anion exchange resin having hydroxyl anions displaceable by the heat stable sulfur oxyanions whereby the hydroxyl anions of the resin are replaced by the heat stable divalent sulfur oxyanions which are thus taken out of the solution. The anion exchange resin preferably is a strong base anion exchange resin which can be regenerated by contacting it with aqueous sodium hydroxide to replace the heat stable sulfur oxyanions on said resin with hydroxyl anions.
    • 从含有其的气体混合物中选择性除去二氧化碳的方法的改进,其中气体混合物与含水吸收剂溶液如烷醇胺,碱金属氢氧化物,氢氧化铵或其亚硫酸盐接触以除去硫 二氧化碳从气体混合物形成,并形成富含SO2的吸收剂溶液,该溶液被移至汽提区,其中二氧化硫被排出以形成SO 2贫化的含水吸收剂溶液,其被再循环并与气体混合物重新接触,改进 包括通过使其一部分与具有可通过热稳定性硫氧阴离子置换的羟基阴离子的阴离子交换树脂接触而除去累积在吸收水溶液中的热稳定盐的硫氧化阴离子,由此树脂的羟基阴离子被热稳定的二价 因此硫氧醛阴离子从溶液中取出。 阴离子交换树脂优选是强碱性阴离子交换树脂,其可以通过使其与氢氧化钠水溶液接触而再生,以用羟基阴离子代替所述树脂上的热稳定性硫氧阴离子。