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生物脱硫技术与特点你了解多少?

时间:2020-09-18
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  一、生物脱硫技术简介
  1、 Brief introduction of biological desulfurization technology
  沼气生物脱硫是20世纪90年代发展起来的新技术,是在常温常压下利用利用微生物实现硫的价态转换的一种新技术。生物脱硫工艺过程是将一定量的空气导入含有硫化氢的沼气中,在反应器内装有大量的生物填料,它们为细菌繁殖提供充分的空间。营养液的循环使填料保持潮湿状态,并补充细菌生长繁殖所需营养。专属丝硫菌属、硫杆菌属在新陈代谢的过程中吸收硫化氢,并将他们转化为单质硫,进而转化为硫酸。
  Biogas biological desulfurization is a new technology developed in the 1990s. It is a new technology using microorganisms to realize the valence state conversion of sulfur under normal temperature and pressure. The process of biological desulfurization is to introduce a certain amount of air into the biogas containing hydrogen sulfide, and a large number of biological fillers are installed in the reactor, which provide sufficient space for bacterial reproduction. The circulation of nutrient solution keeps the packing moist and replenishes the nutrition needed for the growth and reproduction of bacteria. In the process of metabolism, Thiobacillus and Rhizobium absorb hydrogen sulfide and convert them into elemental sulfur and then sulfuric acid.
            生物脱硫技术
  二、生物脱硫原理
  2、 Principle of biological desulfurization
  沼气生物脱硫是利用脱硫细菌在一定的温度、湿度和微氧条件下将 H2S转化为单质硫或亚硫酸。主要反应如下:
  Biogas biological desulfurization is to use desulfurization bacteria to convert H2S into elemental sulfur or sulfite under certain temperature, humidity and micro oxygen conditions. The main reactions were as follows:
  H2S + 1/2O2 → S(单质) + H2O    (1)
  H2S + 1 / 2O2 → s (Elemental) + H2O (1)
  H2S + 3/2O2 → H2SO3  (2)
  H2S + 3/2O2 → H2SO3  (2)
  根据提供氧量的不同,产物有所不同:当氧量适量时,发生反应(1),硫化氢主要转化为单质硫;当氧气过量时,发生反应(2),硫化氢主要转化为亚硫酸。根据上述反应,可以通过控制供氧量和氧化还原电位来控制产物的类型。
  According to the different oxygen supply, the products are different: when the oxygen content is appropriate, reaction (1) occurs, and hydrogen sulfide is mainly converted into elemental sulfur; when oxygen is excessive, reaction (2) occurs, and hydrogen sulfide is mainly converted into sulfite. According to the above reaction, the type of product can be controlled by controlling oxygen supply and redox potential.
  三、沼气生物脱硫的特点
  3、 Characteristics of biogas biological desulfurization
  1、率: 硫化氢去除率高达98.5%
  1. High efficiency: removal rate of hydrogen sulfide is up to 98.5%
  2、高适应范围: 可处理硫化氢浓度高达1.5% (15000ppm)
  2. High application range: it can treat hydrogen sulfide concentration as high as 1.5% (15000ppm)
  3、低成本: 与其它脱硫技术相比,运行成本
  3. Low cost: compared with other desulfurization technologies, the operation cost is the lowest
  4、高安全性: 无二次污染
  4. High safety: no secondary pollution
  5、无人值守: 系统通过在线监测系统全自动运行
  5. Unattended: the system runs automatically through the online monitoring system
  6、维护简单: 少量的维护工作
  6. Simple maintenance: a small amount of maintenance work