沼氣脫硫是一種簡單，高效，成本相對較低的脫硫方法，也是一種應(yīng)用更為廣泛的脫硫方法。通過干式法從沼氣中除去硫化氫的設(shè)備的基本原理是O2將硫化氫（H2S）氧化為硫或硫氧??化物的方法，也可以稱為干氧化法。填充物放置在內(nèi)部，填充層包括活性炭，氧化鐵等。如今，氧化鐵更為常用。氣體以低流速從一端的入口進入容器，穿過容器中的填料層，硫化氫（H2S）被氧化成硫或硫氧化合物，并保留在填料層中。凈化后的氣體從容器另一端的出氣口排出。
Biogas desulfurization is a simple, efficient, and relatively low-cost desulfurization method, and it is also a more widely used desulfurization method. The basic principle of equipment for removing hydrogen sulfide from biogas through dry method is that O2 oxidizes hydrogen sulfide (H2S) to sulfur or sulfur oxygen?? The method of chemical synthesis can also be called dry oxidation method. The filling material is placed inside, and the filling layer includes activated carbon, iron oxide, etc. Nowadays, iron oxide is more commonly used. The gas enters the container at a low flow rate from the inlet at one end, passes through the packing layer in the container, and hydrogen sulfide (H2S) is oxidized into sulfur or sulfur oxides, which are retained in the packing layer. The purified gas is discharged from the outlet on the other end of the container.
沼氣脫硫的運行和維護應(yīng)符合下列要求：
The operation and maintenance of biogas desulfurization should meet the following requirements:

1、脫水脫硫裝置中的冷凝水應(yīng)定期排放。當(dāng)室外溫度接近0°C時，應(yīng)每天排放冷凝水，并在排放時防止沼氣泄漏。
1. The condensate in the dehydration and desulfurization device should be discharged regularly. When the outdoor temperature approaches 0 ° C, condensate water should be discharged daily and biogas leakage should be prevented during discharge.
2、生物脫硫開始并正常進行后，應(yīng)定期檢查脫硫前后的硫化氫濃度變化，并且硫化氫的去除率應(yīng)符合后端工藝的要求。當(dāng)發(fā)現(xiàn)脫硫效率大大降低時，應(yīng)及時補充循環(huán)的營養(yǎng)液。塔中的填料應(yīng)每6-12個月清潔一次。
2. After the start and normal operation of biological desulfurization, the changes in hydrogen sulfide concentration before and after desulfurization should be regularly checked, and the removal rate of hydrogen sulfide should meet the requirements of the back-end process. When it is found that the desulfurization efficiency is greatly reduced, the circulating nutrient solution should be supplemented in a timely manner. The packing in the tower should be cleaned every 6-12 months.
3、應(yīng)當(dāng)定期檢查干燥脫硫塔前后的硫化氫濃度和沼氣壓力變化。當(dāng)不滿足設(shè)計要求時，應(yīng)更換脫硫劑或進行脫硫再生。
3. Regularly check the changes in hydrogen sulfide concentration and biogas pressure before and after drying the desulfurization tower. When the design requirements are not met, the desulfurization agent should be replaced or desulfurization regeneration should be carried out.
4、干式脫硫塔的再生應(yīng)滿足以下要求：
4. The regeneration of dry desulfurization tower should meet the following requirements:
1）在塔內(nèi)使用脫硫劑進行再生時，應(yīng)關(guān)閉沼氣的進，出口閥門，并旁路支管和排放閥門管道應(yīng)打開。
1) When using desulfurizer for regeneration in the tower, the inlet and outlet valves of the biogas should be closed, and the bypass branch pipe and discharge valve pipeline should be opened.
2）當(dāng)使用在線脫硫器再生時，應(yīng)根據(jù)沼氣中的硫化氫含量確定空氣混合量和空氣流速，塔內(nèi)溫度應(yīng)低于70℃，且塔內(nèi)的氧含量脫硫塔出口沼氣應(yīng)小于1％3）脫硫劑應(yīng)在2?3次再生后及時更換。更換脫硫劑時，操作員應(yīng)戴防毒面具，房間應(yīng)通風(fēng)。
2) When using an online desulfurizer for regeneration, the air mixing amount and air flow rate should be determined based on the hydrogen sulfide content in the biogas. The temperature inside the tower should be less than 70 ℃, and the oxygen content inside the tower. The outlet biogas of the desulfurizer should be less than 1%. The desulfurizer should be at 2? Replace in a timely manner after 3 regenerations. When replacing the desulfurizer, the operator should wear a gas mask and the room should be ventilated.
4）沼氣脫硫廢脫硫器的處置應(yīng)符合環(huán)境保護要求。
4) The disposal of biogas desulfurization waste desulfurizers should comply with environmental protection requirements.
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