如何選擇合適的脫硫工藝？

　　How to choose a suitable desulfurization process?

　　綜合考慮實(shí)際需求

　　Taking into account actual needs comprehensively

　　在選擇沼氣脫硫工藝時(shí)，不能只看某一個(gè)方面，要綜合考慮多個(gè)因素。

　　When choosing a biogas desulfurization process, one should not only consider one aspect, but also take into account multiple factors comprehensively.

　　沼氣流量和硫化氫濃度：如果沼氣流量小、硫化氫濃度低，干法脫硫是不錯(cuò)的選擇；如果流量大、濃度高，濕法脫硫和生物脫硫更合適。

　　Biogas flow rate and hydrogen sulfide concentration: If the biogas flow rate is small and the hydrogen sulfide concentration is low, dry desulfurization is a good choice; If the flow rate is high and the concentration is high, wet desulfurization and biological desulfurization are more suitable.

　　成本預(yù)算：干法脫硫前期投資相對(duì)較小，但運(yùn)行成本高；濕法脫硫和生物脫硫前期建設(shè)成本高，但運(yùn)行成本相對(duì)較低。要根據(jù)自己的資金情況，算好經(jīng)濟(jì)賬。

　　Cost budget: The initial investment in dry desulfurization is relatively small, but the operating cost is high; Wet desulfurization and biological desulfurization have high initial construction costs, but relatively low operating costs. According to one's own financial situation, calculate the economic account well.

　　場(chǎng)地條件：場(chǎng)地有限的話，干法脫硫更節(jié)省空間；場(chǎng)地充足的情況下，可以考慮濕法脫硫和生物脫硫。

　　Venue conditions: If the venue is limited, dry desulfurization is more space saving; If there is sufficient space, wet desulfurization and biological desulfurization can be considered.

　　環(huán)保要求：如果對(duì)環(huán)保要求很高，希望實(shí)現(xiàn)綠色生產(chǎn)，生物脫硫無疑是非常佳選擇；如果對(duì)環(huán)保要求相對(duì)較低，干法脫硫和濕法脫硫也能滿足基本需求。

　　Environmental requirements: If there is a high demand for environmental protection and green production is desired, biological desulfurization is undoubtedly the best choice; If the environmental requirements are relatively low, dry desulfurization and wet desulfurization can also meet basic needs.

　　參考實(shí)際案例

　　Refer to actual case studies

　　我們來看幾個(gè)實(shí)際案例。某小型養(yǎng)殖場(chǎng)，每天產(chǎn)生沼氣 100 立方米，硫化氫濃度為 200ppm。經(jīng)過綜合考慮，選擇了干法脫硫工藝。因?yàn)樗幚砹啃。煞摿蜻\(yùn)行簡(jiǎn)單、占地面積小，而且能滿足脫硫要求，雖然運(yùn)行成本高一些，但整體比較合適。

　　Let's take a look at a few practical cases. A small livestock farm produces 100 cubic meters of biogas per day with a hydrogen sulfide concentration of 200ppm. After comprehensive consideration, the dry desulfurization process was chosen. Because of its small processing capacity, simple operation and small footprint of dry desulfurization, and ability to meet desulfurization requirements, although the operating cost is higher, it is generally more suitable.

　　再比如，某大型垃圾填埋場(chǎng)，每天產(chǎn)生沼氣 5000 立方米，硫化氫濃度高達(dá) 1500ppm。這種情況下，采用了濕法脫硫工藝。濕法脫硫處理量大、脫硫效率高，雖然裝機(jī)功率高、設(shè)備復(fù)雜，但能有效處理大量高濃度硫化氫的沼氣。

　　For example, a large landfill produces 5000 cubic meters of biogas per day, with a hydrogen sulfide concentration as high as 1500ppm. In this case, wet desulfurization process was adopted. Wet desulfurization has a large processing capacity and high desulfurization efficiency. Although it has high installed power and complex equipment, it can effectively treat a large amount of high concentration hydrogen sulfide biogas.

　　還有一家注重環(huán)保的企業(yè)，同樣是處理大量高濃度硫化氫的沼氣，它選擇了生物脫硫工藝。生物脫硫雖然啟動(dòng)時(shí)間長(zhǎng)、對(duì)運(yùn)行條件要求高，但它環(huán)保無污染、全自動(dòng)運(yùn)行，符合企業(yè)的發(fā)展理念。

　　There is also an environmentally friendly enterprise that processes a large amount of high concentration hydrogen sulfide biogas and chooses the biological desulfurization process. Although biological desulfurization has a long start-up time and high requirements for operating conditions, it is environmentally friendly, pollution-free, and operates fully automatically, which is in line with the development philosophy of the enterprise.

　　合理制定脫硫效果

　　Reasonably formulate desulfurization effect

　　在制定脫硫效果時(shí)，要根據(jù)后續(xù)設(shè)備對(duì)硫化氫濃度的限制來確定。比如，如果后續(xù)使用沼氣的設(shè)備是鍋爐或發(fā)電機(jī)，它們對(duì)硫化氫濃度有一定的要求，過高的硫化氫會(huì)腐蝕設(shè)備，影響設(shè)備壽命和運(yùn)行安全。同時(shí)，還要考慮沼氣與天然氣消耗量的比例，制定一個(gè)合理的脫除效果。一般來說，我們建議非常終的硫化氫含量控制在 25 - 100ppm，這樣既能滿足設(shè)備的使用要求，又不會(huì)過度脫硫增加成本。

　　When formulating the desulfurization effect, it should be determined based on the limitations of subsequent equipment on hydrogen sulfide concentration. For example, if the equipment that uses biogas in the future is a boiler or generator, they have certain requirements for hydrogen sulfide concentration. Excessive hydrogen sulfide can corrode the equipment, affecting its service life and operational safety. At the same time, it is necessary to consider the ratio of biogas and natural gas consumption and develop a reasonable removal effect. Generally speaking, we recommend that the final hydrogen sulfide content be controlled at 25-100ppm, which can meet the requirements of equipment use without excessive desulfurization and increasing costs.

　　沼氣脫硫工藝各有千秋，沒有絕對(duì)的好壞之分，只有適不適合的區(qū)別。通過了解它們的工作原理、適用范圍、優(yōu)缺點(diǎn)，以及如何選擇合適的工藝，相信大家對(duì)沼氣脫硫有了更深入的認(rèn)識(shí)。在實(shí)際應(yīng)用中，一定要結(jié)合自身的實(shí)際情況，綜合考慮各種因素，選擇非常適合自己的脫硫工藝，讓沼氣這個(gè)清潔能源更好地為我們服務(wù)。

　　Each biogas desulfurization process has its own advantages, and there is no absolute distinction between good and bad, only the difference between suitability and unsuitability. By understanding their working principles, scope of application, advantages and disadvantages, as well as how to choose suitable processes, I believe everyone has a deeper understanding of biogas desulfurization. In practical applications, it is necessary to combine our own actual situation, comprehensively consider various factors, and choose the most suitable desulfurization process for ourselves, so that biogas, a clean energy source, can better serve us.

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