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两种经典的沼气脱硫提纯天然气的方法介绍!

时间:2019-09-11
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随着人们对沼气应用的不断提高,沼气脱硫的要求也越来越精细!出去目前比较常用的干式脱硫法、湿式脱硫法和生物脱硫法外,小编在给大家介绍两种经典的沼气脱硫方法!
With the continuous improvement of the application of biogas, the requirement of biogas desulfurization is becoming more and more fine. In addition to dry desulfurization, wet desulfurization and biological desulfurization, two classical methods of biogas desulfurization are introduced.
1、PSA和膜分离法脱硫
1. Desulfurization by PSA and membrane separation
变压吸附(PSA)的原理是以吸附剂对不同的气体在不同的压力下,气体吸附速率和量的不同而实现气体的分离。膜分离法则是利用气体分子大小不同能选择性透过膜和不同气体穿透速率不同而实现气体的分离。这两种方法分离出的硫化氢都需要再处理,同时对甲烷气带来较大的损失。
The principle of pressure swing adsorption (PSA) is to separate gases by adsorbing different gases at different pressures and different adsorption rates and quantities. Membrane separation is the separation of gases by selective permeation of gases with different molecular sizes and different gas penetration rates. The hydrogen sulfide separated by these two methods needs to be reprocessed, and at the same time, the methane gas will be greatly damaged.
另外,膜分离法中使用的膜要经常更换,运行成本较高,而变压吸附剂和化学吸收剂可循环使用,因此,变压吸附法相对于膜分离技术的实际应用更广。
In addition, the membranes used in membrane separation process need to be replaced frequently, and the operation cost is high. Pressure swing adsorbent and chemical absorbent can be recycled. Therefore, pressure swing adsorbent has a wider application than membrane separation technology.
沼气脱硫设备
2、碱洗脱硫
2. Alkali elution desulfurization
碱洗脱硫是指采用碱液循环使用进行脱硫,根据再生方法不同可分为:化学法和生物法。两种方式在脱硫、硫磺处理、配碱等工序上均相同,其中采用催化剂再生的工艺叫化学再生脱硫,采用生物菌再生的工艺叫生物再生脱硫。
Alkali elution desulfurization refers to the use of alkali liquor for desulfurization. According to different regeneration methods, it can be divided into chemical method and biological method. The two methods are identical in desulfurization, sulfur treatment and alkali blending. The process of catalyst regeneration is called chemical regeneration desulfurization, and the process of bacterial regeneration is called biological regeneration desulfurization.
除了再生方式不同之外,这两种方法主要的应用领域也各自不同,其中生物再生式碱洗脱硫工艺在沼气发电气体预处理工序中有一定的应用,在沼气精制天然气的气体脱除硫化氢实际项目中则尚未应用,化学再生法相对而言应用则更广一些。
In addition to the different regeneration methods, the main application fields of these two methods are also different. Among them, the biological regeneration alkali elution desulfurization process has certain application in the pretreatment process of biogas power generation gas, but has not been applied in the actual project of removing hydrogen sulfide from natural gas refined by biogas. The chemical regeneration method corresponds to the chemical regeneration method. It is more widely used.
以上的精彩内容由沼气脱流设备厂家整理提供,更多的精彩内容请继续关注我们:http://www.jiamei-qd.com,我们会有更多的精彩内容等你查看!
The above wonderful content is provided by the manufacturer of biogas deflux equipment. More wonderful content please continue to pay attention to us: http://www.jiamei-qd.com, we will have more wonderful content waiting for you to see!
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