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.
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:
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、沼氣生物脫硫的特點
3、 Characteristics of biogas biological desulfurization
1、率： 硫化氫去除率高達98.5%
1. High efficiency: removal rate of hydrogen sulfide is up to 98.5%
2、高適應范圍： 可處理硫化氫濃度高達1.5% （15000ppm）
2. High application range: it can treat hydrogen sulfide concentration as high as 1.5% (15000ppm)
3、低成本： 與其它脫硫技術相比，運行成本
3. Low cost: compared with other desulfurization technologies, the operation cost is the lowest
4、高安全性: 無二次污染
4. High safety: no secondary pollution
5、無人值守： 系統通過在線監測系統全自動運行
5. Unattended: the system runs automatically through the online monitoring system
6、維護簡單： 少量的維護工作
6. Simple maintenance: a small amount of maintenance work
企業二維碼
2020-09-18
魯公網安備37011202000764號號