大型的脱硫工程是如何达成有效脱硫？_行业资讯_新闻资讯-山东恒能环保能源设备有限公司

分类导航

产品展示

联系我们

山东恒能环保能源设备有限公司

联系电话：18678860671

服务热线：0531-69953988

联系地址：中国(山东)自由贸易试验区济南片区孙村街道经十东路33688号章锦综合保税区联东U谷科创中心5号楼 101

大型的脱硫工程是如何达成有效脱硫？

首页- 新闻资讯 > 行业资讯

2023-10-30

干法脱硫：干法脱硫是一种简单、高效、成本相对较低的脱硫方法，一般适用于沼气量少、硫化氢浓度低的沼气脱硫。干法工艺设备的组成是在容器中放置填充物，填充物层包括活性炭、氧化铁等。气体以低流速从一端穿过容器中的填料层，硫化氢（H2S）被氧化成硫磺或氧化硫后，残留在填料层中，净化后的气体从容器的另一端排出。

Dry desulfurization: Dry desulfurization is a simple, efficient, and relatively low-cost desulfurization method, generally suitable for biogas desulfurization with low biogas volume and low hydrogen sulfide concentration. The composition of dry process equipment is to place fillers in the container, and the filler layer includes activated carbon, iron oxide, etc. The gas passes through the packing layer in the container at a low flow rate from one end, and hydrogen sulfide (H2S) is oxidized into sulfur or sulfur oxide, which remains in the packing layer. The purified gas is discharged from the other end of the container.

湿法脱硫：湿法脱硫可以归纳分为物理吸收法、化学吸收法和氧化法三种。物理和化学方法存在硫化氢再处理问题，氧化法是以碱性溶液为吸收剂，并加入载氧体为催化剂，吸收H2S，并将其氧化成单质硫。湿法氧化法是把脱硫剂溶解在水中，液体进入设备，与沼气混合，沼气中的硫化氢（H2S）与液体产生氧化反应，生成单质硫吸收硫化氢的液体有氢氧化钠、氢氧化钙、碳酸钠、硫酸亚铁等。成熟的氧化脱硫法，脱硫效率可达99.5%以上。
生物脱硫

Wet desulfurization: Wet desulfurization can be classified into three types: physical absorption method, chemical absorption method, and oxidation method. There is a problem of hydrogen sulfide reprocessing in physical and chemical methods. The oxidation method uses an alkaline solution as an absorbent and an oxygen carrier as a catalyst to absorb H2S and oxidize it into elemental sulfur. Wet oxidation method is to dissolve desulfurizer in water, and the liquid enters the equipment to be mixed with biogas. Hydrogen sulfide (H2S) in biogas reacts with the liquid to produce elemental sulfur and absorb hydrogen sulfide. The liquid includes sodium hydroxide, calcium hydroxide, sodium carbonate, ferrous sulfate, etc. The mature oxidation desulfurization method has a desulfurization efficiency of over 99.5%.

在大型的脱硫工程中，一般采用先用湿法进行粗脱硫，之后再通过干法进行精脱硫。沼气进入干式脱硫塔前，应设置冷凝水箱或沼气颗粒过滤器。该装置可以消除沼气中含有的颗粒杂志，使沼气在脱硫前含有一定的湿度。

In large-scale desulfurization projects, wet desulfurization is generally used first for coarse desulfurization, followed by dry desulfurization for fine desulfurization. Before biogas enters the dry desulfurization tower, a condensate water tank or biogas particle filter should be installed. This device can eliminate the particle magazine contained in biogas, so that biogas contains a certain amount of humidity before desulfurization.

当观察到脱硫剂变色或系统压力损失过大时，应交替使用另一个脱硫塔。目前脱硫塔内进行自然通风，在沼气放空后对脱硫剂进行再生。当再生效果不好时，应将废脱硫剂从塔底取出，而废填料从底部排出，应向反应器中加入相同体积的新鲜脱硫填料。

When discoloration of the desulfurization agent or excessive system pressure loss is observed, another desulfurization tower should be used alternately. At present, natural ventilation is carried out in the desulfurization tower, and the desulfurization agent is regenerated after the biogas is released. When the regeneration effect is not good, the waste desulfurization agent should be taken out from the bottom of the tower, and the waste filler should be discharged from the bottom. The same volume of fresh desulfurization filler should be added to the reactor.

上一条沼气提纯完成需要哪些设备？2023-10-30

下一条生物脱硫主要系统组成及优势2023-10-30