本期小笛视频来对比干法、湿法和生物脱硫这三大工艺。随着节能减排政策不断深入人心，很多企业都打算利用污水站的小笛视频污污网站下载部分代替天然气，用于锅炉燃烧或发电。那么，小笛视频污污网站下载利用前的硫化氢脱除工艺，也就是脱硫，就成了工厂和站长们的选择难点。当前，比较常用的工艺主要有干法脱硫、湿法脱硫和生物脱硫这三种。

　　In this issue, we will compare the three major processes of dry, wet, and biological desulfurization. With the continuous deepening of energy-saving and emission reduction policies, many enterprises plan to use the biogas from sewage plants to replace natural gas for boiler combustion or power generation. So, the hydrogen sulfide removal process before biogas utilization, namely desulfurization, has become a difficult choice for factories and station managers. Currently, the commonly used processes include dry desulfurization, wet desulfurization, and biological desulfurization.

　　首先来说第一种，干法脱硫。干法脱硫的原理是利用固体吸附剂去除气体中的硫化氢等酸性气体，靠的是吸附剂表面的活性位点与硫化氢分子之间的物理或化学相互作用，把硫化氢分子吸附在吸附剂表面，从而达到脱除目的。

　　Firstly, let's talk about the first method, dry desulfurization. The principle of dry desulfurization is to use solid adsorbents to remove acidic gases such as hydrogen sulfide from the gas. It relies on the physical or chemical interactions between the active sites on the adsorbent surface and hydrogen sulfide molecules to adsorb hydrogen sulfide molecules on the adsorbent surface, thereby achieving the purpose of removal.

　　它的工艺流程很简单，第一步是原料气预处理，去除其中的杂质和水分，避免影响吸附剂性能；第二步是吸附，预处理后的原料气进入吸附塔，与吸附剂接触，硫化氢被吸附；第三步是解吸，当吸附剂饱和后，通过加热或降压的方式释放出硫化氢，恢复吸附剂的吸附能力；最后是产品气干燥，得到的纯净硫化氢气体可以作为化工原料或燃料使用。

　　Its process flow is very simple. The first step is the pre-treatment of the raw gas to remove impurities and moisture, avoiding affecting the performance of the adsorbent; The second step is adsorption. The pre treated feed gas enters the adsorption tower and comes into contact with the adsorbent, where hydrogen sulfide is adsorbed; The third step is desorption. When the adsorbent is saturated, hydrogen sulfide is released through heating or depressurization to restore the adsorption capacity of the adsorbent; Finally, the product gas is dried, and the pure hydrogen sulfide gas obtained can be used as a chemical raw material or fuel.

　　干法脱硫的优点很突出，设备结构简单、占地面积小、投资成本低，操作也方便，不需要复杂的控制系统和仪表，维护保养费用低，适应性还强，能满足不同规模和性质的气体处理需求。但它也有缺点，脱硫效率相对较低，一般只能达到 70%~90% 左右，满足不了太严格的排放标准；而且吸附剂寿命有限，需要定期更换，增加了运行成本；过程中还容易产生二次污染，比如吸附剂粉尘飞扬、废气排放等问题，得采取相应措施治理。

　　The advantages of dry desulfurization are prominent, with simple equipment structure, small footprint, low investment cost, convenient operation, no need for complex control systems and instruments, low maintenance costs, strong adaptability, and can meet the gas treatment needs of different scales and properties. But it also has its drawbacks, with relatively low desulfurization efficiency, generally only reaching around 70% to 90%, which cannot meet too strict emission standards; Moreover, the lifespan of the adsorbent is limited and requires regular replacement, which increases operating costs; During the process, secondary pollution is also prone to occur, such as adsorbent dust flying and exhaust emissions, which require corresponding measures to be taken for treatment.

　　干法脱硫更适用于小规模气体处理、高浓度硫化氢气体处理以及间歇式气体处理项目。举个小笛在线看视频在线观看，某化工厂用干法脱硫技术处理含硫化氢废气，废气流量 1000m?/h，硫化氢浓度 1000mg/m?，采用活性炭作为吸附剂，设计了两座直径 2m、高度 10m 的吸附塔。它的工程参数大多是常温常压操作，吸附和解吸的流速一般在 0.5m/s~1.0m/s，时间在 30min~60min，解吸温度会高一些，在 100℃~150℃。处理后，废气中硫化氢浓度能降低至 20mg/m? 以下，符合国家标准，该厂每年可减少硫化氢排放量约 100 吨，经济效益和环境效益都很显著。

　　Dry desulfurization is more suitable for small-scale gas treatment, high concentration hydrogen sulfide gas treatment, and intermittent gas treatment projects. For example, a chemical plant uses dry desulfurization technology to treat waste gas containing hydrogen sulfide, with a flow rate of 1000m ?/h and a hydrogen sulfide concentration of 1000mg/m? Two adsorption towers with a diameter of 2m and a height of 10m were designed using activated carbon as the adsorbent. Its engineering parameters are mostly operated at normal temperature and pressure, with adsorption and desorption flow rates generally ranging from 0.5m/s to 1.0m/s and times between 30min and 60min. The desorption temperature may be higher, ranging from 100 ℃ to 150 ℃. After treatment, can the concentration of hydrogen sulfide in the exhaust gas be reduced to 20mg/m? According to national standards, the factory can reduce hydrogen sulfide emissions by about 100 tons per year, with significant economic and environmental benefits.

　　接下来是第二种，湿法脱硫。它的原理是利用液体吸收剂去除硫化氢等酸性气体，通过吸收剂与硫化氢发生化学反应，将其转化为不溶于水的物质，进而实现脱除。

　　Next is the second method, wet desulfurization. Its principle is to use liquid absorbents to remove acidic gases such as hydrogen sulfide. Through a chemical reaction between the absorbents and hydrogen sulfide, it is converted into insoluble substances in water, thereby achieving removal.

　　工艺流程和干法类似，先对原料气进行预处理，去除杂质和水分；然后进入吸收塔，硫化氢被吸收剂吸收；吸收剂饱和后，通过加热或减压解吸，释放出硫化氢，恢复吸收能力；最后对解吸后的产品气进行干燥，得到纯净的硫化氢气体。

　　The process flow is similar to the dry method, where the raw gas is first pretreated to remove impurities and moisture; Then it enters the absorption tower, where hydrogen sulfide is absorbed by the absorbent; After saturation of the absorbent, hydrogen sulfide is released through heating or depressurization desorption to restore absorption capacity; Finally, dry the desorbed product gas to obtain pure hydrogen sulfide gas.

　　湿法脱硫的优点是脱硫效率高，能达到 90% 以上，满足严格的排放标准；吸收剂可以再生，降低了运行成本；而且不易产生二次污染，对环境友好。但它的缺点也很明显，设备结构复杂、占地面积大、投资成本高，操作难度大，需要复杂的控制系统和仪表，维护保养费用也高，适应性还比较差，只能适应一定规模和性质的气体处理需求。

　　The advantage of wet desulfurization is its high desulfurization efficiency, which can reach over 90% and meet strict emission standards; Absorbents can be regenerated, reducing operating costs; And it is not prone to secondary pollution and is environmentally friendly. But its disadvantages are also very obvious, such as complex equipment structure, large footprint, high investment cost, difficult operation, requiring complex control systems and instruments, high maintenance costs, and poor adaptability. It can only adapt to gas treatment needs of a certain scale and nature.

　　它更适用于大规模气体处理、低浓度硫化氢气体处理以及连续式气体处理项目。比如某炼油厂，用湿法脱硫技术处理含硫化氢废气，废气流量 10000m?/h，硫化氢浓度 100mg/m?，采用碳酸钠作为吸收剂，设计了三座直径 4m、高度 20m 的吸收塔。工程参数方面，吸收温度常温 20℃~30℃，常压操作，吸收和解吸的流速、时间与干法相近，解吸温度同样在 100℃~150℃。处理后，硫化氢浓度也能降至 20mg/m? 以下，该厂每年可减少硫化氢排放量约 1000 吨，效益显著。

　　It is more suitable for large-scale gas treatment, low concentration hydrogen sulfide gas treatment, and continuous gas treatment projects. For example, a certain refinery uses wet desulfurization technology to treat hydrogen sulfide containing waste gas, with a flow rate of 10000m?/h and a hydrogen sulfide concentration of 100mg/m? Three absorption towers with a diameter of 4m and a height of 20m were designed using sodium carbonate as the absorbent. In terms of engineering parameters, the absorption temperature is at room temperature of 20 ℃~30 ℃, operating at atmospheric pressure. The flow rate and time of absorption and desorption are similar to those of dry process, and the desorption temperature is also between 100 ℃~150 ℃. After processing, can the concentration of hydrogen sulfide also be reduced to 20mg/m? Below, the factory can reduce hydrogen sulfide emissions by about 1000 tons per year, with significant benefits.

　　第三种是生物脱硫。它的原理是利用微生物的代谢活动去除硫化氢等酸性气体，通过微生物体内的酶系统将硫化氢转化为无毒无害的物质，从而实现脱除。

　　The third type is biological desulfurization. Its principle is to use the metabolic activity of microorganisms to remove acidic gases such as hydrogen sulfide, and convert hydrogen sulfide into non-toxic and harmless substances through the enzyme system in the microbial body, thereby achieving removal.

　　工艺流程主要包括原料气预处理，去除杂质和水分，避免影响微生物的生长和代谢；然后原料气进入生物反应器，与微生物接触，硫化氢被微生物代谢转化；最后对反应器内的产物进行分离、提纯，得到的纯净产物可作为化工原料或燃料使用。

　　The process mainly includes pre-treatment of raw gas, removal of impurities and moisture, and avoidance of affecting the growth and metabolism of microorganisms; Then the feed gas enters the bioreactor and comes into contact with microorganisms, where hydrogen sulfide is metabolized and converted by the microorganisms; Finally, the products in the reactor are separated and purified, and the pure products obtained can be used as chemical raw materials or fuels.

　　生物脱硫的优点是脱硫效率高，能达到 90% 以上，满足严格排放标准；运行成本低，不需要消耗大量化学药品和能源，只需提供适宜的温度、湿度和营养物质等条件；而且无二次污染，对环境友好。但它也存在设备复杂、占地面积大、投资成本高的问题，操作难度大，需要专业技术人员管理维护，否则容易出现故障，适应性也比较差，只能适应一定规模和性质的气体处理需求。

　　The advantage of biological desulfurization is its high desulfurization efficiency, which can reach over 90% and meet strict emission standards; Low operating costs, no need to consume large amounts of chemicals and energy, only providing suitable conditions such as temperature, humidity, and nutrients; And there is no secondary pollution, environmentally friendly. But it also has the problems of complex equipment, large footprint, high investment cost, high operational difficulty, and the need for professional technical personnel to manage and maintain it. Otherwise, it is prone to malfunctions and has poor adaptability, only able to adapt to gas processing needs of a certain scale and nature.

　　它适用于大规模气体处理、低浓度硫化氢气体处理以及连续式气体处理项目。某化肥厂就用了生物脱硫技术，处理的废气流量 5000m?/h，硫化氢浓度 50mg/m?，采用固定床生物反应器，设计了四座直径 3m、高度 10m 的反应器。工程参数上，反应温度在 30℃~35℃，最适温度 32℃，常压操作，反应流速 0.5m/s~1.0m/s，反应时间 30min~60min；营养液添加量为每立方米废气 0.5kg~1.0kg，pH 值控制在 6.0~8.0，最适 7.0，营养液温度 25℃~30℃，最适 28℃。处理后，硫化氢浓度降至 20mg/m? 以下，该厂每年可减少硫化氢排放量约 250 吨，效益良好。

　　It is suitable for large-scale gas treatment, low concentration hydrogen sulfide gas treatment, and continuous gas treatment projects. A certain fertilizer plant has used biological desulfurization technology to treat waste gas with a flow rate of 5000m?/h and a hydrogen sulfide concentration of 50mg/m? Four reactors with a diameter of 3m and a height of 10m were designed using fixed bed bioreactors. In terms of engineering parameters, the reaction temperature is between 30 ℃ and 35 ℃, with an optimal temperature of 32 ℃, operating at atmospheric pressure. The reaction flow rate is between 0.5m/s and 1.0m/s, and the reaction time is between 30 minutes and 60 minutes; The amount of nutrient solution added is 0.5kg~1.0kg per cubic meter of exhaust gas, the pH value is controlled at 6.0~8.0, with an optimum of 7.0, and the temperature of the nutrient solution is 25 ℃~30 ℃, with an optimum of 28 ℃. After treatment, the concentration of hydrogen sulfide decreased to 20mg/m? Below, the factory can reduce hydrogen sulfide emissions by about 250 tons per year, with good benefits.

　　最后小笛视频来总结对比一下这三种工艺。干法脱硫多用于硫化氢处理负荷小，或者对脱硫效果要求很高的工况，常作为湿法脱硫或生物脱硫之后的进一步脱硫工艺。在制定脱硫效果时，建议根据后续设备（锅炉或发电机）对硫化氢浓度的限制，以及小笛视频污污网站下载与天然气消耗量的比例，制定合理的脱硫标准，通常建议最终的硫化氢含量控制在 25 到 100ppm。

　　Finally, let's summarize and compare these three processes. Dry desulfurization is often used for conditions with low hydrogen sulfide treatment load or high requirements for desulfurization effect, and is often used as a further desulfurization process after wet desulfurization or biological desulfurization. When formulating the desulfurization effect, it is recommended to establish reasonable desulfurization standards based on the limitations of hydrogen sulfide concentration by subsequent equipment (boilers or generators), as well as the ratio of biogas and natural gas consumption. It is usually recommended to control the final hydrogen sulfide content at 25 to 100ppm.

　　以上，便是本期干法、湿法和生物脱硫三大工艺比较的介绍。今天就到这里啦，拜拜，点个关注呗。

　　Above is an introduction to the comparison of the three major processes of dry, wet, and biological desulfurization in this issue. That's all for today. Goodbye, just follow us.

　　本文由 生物脱硫  友情奉献.更多有关的知识请点击  http://www.tudage.net/   真诚的态度.为您提供为全面的服务.更多有关的知识小笛视频将会陆续向大家奉献.敬请期待.

　　This article is contributed by the friendship of biological desulfurization For more related knowledge, please click http://www.tudage.net/ Sincere attitude To provide you with comprehensive services We will gradually contribute more relevant knowledge to everyone Coming soon.