基本信息:
- 专利标题： Chemical-biological process for the removal of h2s from a gas
- 专利标题（中）：用于从气体中去除h2的化学 - 生物过程
- 申请号：US10538925 申请日：2003-12-04
- 公开(公告)号：US20060251571A1 公开(公告)日：2006-11-09
- 发明人： Roberto Gianna , Umberto Barberini , Mario Valdiserri , Francesco Crescenzi , Andrea Robertiello
- 申请人： Roberto Gianna , Umberto Barberini , Mario Valdiserri , Francesco Crescenzi , Andrea Robertiello
- 申请人地址： IT San Donato Milanese-Milan 20097
- 专利权人： ENITECNOLOGIE S.p.A.
- 当前专利权人： ENITECNOLOGIE S.p.A.
- 当前专利权人地址： IT San Donato Milanese-Milan 20097
- 优先权： ITMI2002A002705 20021220
- 国际申请： PCT/EP03/13798 WO 20031204
- 主分类号： C01B17/02
- IPC分类号： C01B17/02
摘要：
The present application relates to a process for removing hydrogen sulfide H2S from a gas (1) by contacting said gas with a liquid solution (2) containing ferric sulfate in an absorption column (RC). Ferric sulfate and H2S react at room temperature and at a pressure ranging from 1 to 1.2 atm. Ferric ions being reduced to two-valent iron and sulfide oxidised to elemental sulfur. The liquid (4) coming out of the absorption column is filtered in two steps, the retentate (6, 8) comprising elemental sulfur, the filtrate (5, 7) containing the iron ions. The filtrate is sent to a bioreactor (RB) for regeneration, i.e. oxidation of iron to Fe3+ by means of thiobacillus ferroxidans and air injection (10). The regenerated solution is reused in the absorption column (RC). The process faces the problems relating to the alignment between the chemical step and the biological step in order to obtain a process which can stably run continuously.
摘要（中）：
本申请涉及通过在吸收塔（RC）中使所述气体与含有硫酸铁的液体溶液（2）接触从气体（1）除去硫化氢H 2 S的方法。 硫酸铁和H 2 S在室温和1至1.2atm的压力下反应。 铁离子还原成二价铁和硫化物氧化成元素硫。 从吸收塔出来的液体（4）分两个步骤过滤，包含元素硫的渗余物（6,8），含有铁离子的滤液（5,7）。 将滤液送到生物反应器（RB）进行再生，即通过硫杆菌硫氧芽孢杆菌和空气注射（10）将铁氧化成Fe 3+。 再生溶液在吸收塔（RC）中重复使用。 该方法面临与化学步骤和生物学步骤之间的对准有关的问题，以获得可以稳定地连续运行的方法。