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沼氣脫硫的運行維護應符合下列規(guī)定

首頁- 新聞資訊 > 公司新聞

2021-08-23

沼氣脫硫是一種簡單，成本相對較低的脫硫方法，也是一種應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 not only a simple and relatively low-cost desulfurization method, but also a more widely used desulfurization method. The basic principle of the equipment for removing hydrogen sulfide from biogas by dry method is the method that O2 oxidizes hydrogen sulfide (H2S) into sulfur or thiooxide, which can also be called dry oxidation method. The filler is placed inside, and the filler layer includes activated carbon, iron oxide, etc. Nowadays, iron oxide is more commonly used. The gas enters the container from the inlet at one end at a low flow rate and passes through the packing layer in the container. Hydrogen sulfide (H2S) is oxidized into sulfur or sulfur oxide compounds and retained in the packing layer. The purified gas is discharged from the air outlet at the other end of the container.

沼氣脫硫的運行和維護應符合下列要求：

The operation and maintenance of biogas desulfurization shall meet the following requirements:

1、脫水脫硫裝置中的冷凝水應定期排放。當室外溫度接近0°C時，應每天排放冷凝水，并在排放時防止沼氣泄漏。

1. The condensate in the dehydration and desulfurization unit shall be discharged regularly. When the outdoor temperature is close to 0 ° C, the condensate shall be discharged every day and the biogas leakage shall be prevented during discharge.

2、生物脫硫開始并正常進行后，應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符合后端工藝的要求。當發(fā)現(xiàn)脫硫效率大大降低時，應及時補充循環(huán)的營養(yǎng)液。塔中的填料應每6-12個月清潔一次。

2. After biological desulfurization is started and carried out normally, the change of hydrogen sulfide concentration before and after desulfurization shall be checked regularly, and the removal rate of hydrogen sulfide shall meet the requirements of back-end process. When the desulfurization efficiency is greatly reduced, the circulating nutrient solution shall be supplemented in time. The packing in the tower shall be cleaned every 6-12 months.

3、應當定期檢查干燥脫硫塔前后的硫化氫濃度和沼氣壓力變化。當不滿足設計要求時，應更換脫硫劑或進行脫硫再生。

3. The changes of hydrogen sulfide concentration and biogas pressure before and after drying the desulfurization tower shall be checked regularly. When the design requirements are not met, the desulfurizer shall be replaced or desulfurization regeneration shall be carried out.

4、干式脫硫塔的再生應滿足以下要求：

4. The regeneration of dry desulfurization tower shall meet the following requirements:

1）在塔內使用脫硫劑進行再生時，應關閉沼氣的進，出口閥門，并旁路支管和排放閥門管道應打開。

1) When desulfurizer is used for regeneration in the tower, the inlet and outlet valves of biogas shall be closed, and the bypass branch pipe and discharge valve pipeline shall be opened.

2）當使用在線脫硫器再生時，應根據(jù)沼氣中的硫化氫含量確定空氣混合量和空氣流速，塔內溫度應低于70℃，且塔內的氧含量脫硫塔出口沼氣應小于1％;

2) When the on-line desulfurizer is used for regeneration, the air mixing amount and air flow rate shall be determined according to the hydrogen sulfide content in the biogas. The temperature in the tower shall be lower than 70 ℃, and the oxygen content in the tower shall be less than 1% of the biogas at the outlet of the desulfurization tower;

3）脫硫劑應在2?3次再生后及時更換。更換脫硫劑時，操作員應戴防毒面具，房間應通風。

3) The desulfurizer shall be replaced in time after 2 ~ 3 times of regeneration. When replacing desulfurizer, the operator shall wear gas mask and the room shall be ventilated.

4）沼氣脫硫廢脫硫器的處置應符合環(huán)境保護要求。

4) The disposal of biogas desulfurization waste desulfurizer shall meet the requirements of environmental protection.

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