脫硫器，是一種沼氣專用運(yùn)轉(zhuǎn)裝置，從沼氣池中出來的沼氣經(jīng)過初步脫水后，進(jìn)入脫硫器。硫化氫氣體與脫硫劑接觸，由于發(fā)生氧化還原反應(yīng)而從沼氣中脫除。脫硫系統(tǒng)能為脫硫反應(yīng)提供的溫度、水氣含量，脫硫劑的裝填工藝亦能為脫硫過程提供的氣流通道和氣固反應(yīng)的有效接觸面積，可以很大地提高脫硫劑的利用效率以及沼氣的凈化程度。
The biogas desulfurizer is a special biogas operation device. The biogas from the biogas digester enters the desulfurizer after preliminary dehydration. Hydrogen sulfide gas contacts with desulfurizer and is removed from biogas due to redox reaction. The desulfurization system can provide temperature and water gas content for desulfurization reaction, and the loading process of desulfurizer can also provide airflow channel and effective contact area for gas-solid reaction, which can greatly improve the utilization efficiency of desulfurizer and the purification degree of biogas.
沼氣脫硫器特性在于脫硫瓶?jī)?nèi)的進(jìn)氣口上銜接一個(gè)懸空的多孔管，多孔管盡可以或許長(zhǎng)地橫向伸入脫硫瓶?jī)?nèi)腔，多孔管上密布小孔，小孔的孔徑小于氧化鐵小顆粒的直徑。利益在于多孔管的設(shè)置，使與氧化鐵小顆粒之間的出氣道面積大為增加，則出氣量大；其次水分部分泡爛氧化鐵顆粒但仍能保留部分出氣孔；再次在于多孔管懸空設(shè)置，使脫硫瓶?jī)?nèi)水分積壓在懸空多孔管下方，不容易泡爛多孔管周邊的氧化鐵顆粒。
The characteristic of the biogas desulfurizer is that a suspended porous pipe is connected to the air inlet of the desulfurization bottle. The porous pipe can extend horizontally into the inner cavity of the desulfurization bottle as far as possible or as long as possible. The porous pipe is densely covered with small holes, and the aperture of the small hole is smaller than the diameter of small iron oxide particles. The benefit lies in the arrangement of the porous pipe, which makes the area of the air outlet between the small iron oxide particles and a large amount of gas output; secondly, the moisture part of the iron oxide particles is soaked, but some of the air outlet holes can be retained; thirdly, the porous pipe is suspended, so that the water in the desulfurization bottle is accumulated under the suspended porous pipe, which is not easy to soak the iron oxide particles around the porous pipe.
厭氧系統(tǒng)產(chǎn)生的沼氣進(jìn)行回收利用，沼氣輸氣管使用304不銹鋼管，能夠承受50kpa以上壓力。輸氣管道走向合理有坡度，朝沼氣方向傾斜0.05%，長(zhǎng)度短不盤圈，避免增長(zhǎng)管道距離而使沼氣壓力損失增加。
The biogas produced by the anaerobic system is recycled. The biogas transmission pipe uses 304 stainless steel pipe, which can withstand the pressure above 50kPa. The natural gas pipeline has a reasonable direction with a slope of 0.05% in the direction of biogas, and the length is short without circle, so as to avoid increasing the pressure loss of biogas due to the increase of pipeline distance.
沼氣通過不銹鋼管進(jìn)入脫水罐，脫水罐外部采用碳鋼結(jié)構(gòu)，內(nèi)部防腐處理，沼氣以一定的壓力從上部的進(jìn)氣口進(jìn)入后，水滴在離心力作用下旋轉(zhuǎn)與脫水器壁發(fā)生碰撞，使水滴失去動(dòng)能與沼氣相分離，以達(dá)到除塵和脫水的目的。 而后器內(nèi)的水滴沿內(nèi)壁向下流動(dòng)，而存于裝置底部；并定期排除。
The biogas enters into the dehydration tank through stainless steel pipe. The outer part of the dehydration tank is made of carbon steel, and the internal anti-corrosion treatment is carried out. After the biogas enters from the upper air inlet with a certain pressure, the water drops rotate and collide with the dehydrator wall under the action of centrifugal force, which makes the water drop lose kinetic energy and separate from the biogas, so as to achieve the purpose of dust removal and dehydration. The water droplets in the latter flow downward along the inner wall and remain at the bottom of the device, and are discharged regularly.
脫水后的沼氣再進(jìn)入脫硫罐，干法脫硫沼氣氣體中等硫化氫（H2S）的基本原理是以O(shè)2使H2S氧化成硫或硫氧化物的一種方法，也可稱為干式氧化法。干法設(shè)備的構(gòu)成是，在一個(gè)容器內(nèi)放入填料，填料層有活性炭、氧化鐵等。氣體以低流速從一端經(jīng)過容器內(nèi)填料層，硫化氫（H2S）氧化成硫或硫氧化物后，余留在填料層中，凈化后氣體從容器另一端排出。
The dehydrated biogas enters the desulfurization tank again. The basic principle of dry desulfurization of medium hydrogen sulfide (H2S) in biogas gas is a method that oxidizes H2S into sulfur or sulfur oxide with O2, which can also be called dry oxidation method. The composition of dry process equipment is to put fillers in a container, and the filler layer has activated carbon, iron oxide, etc. The gas passes through the packing layer in the container at a low flow rate. After hydrogen sulfide (H2S) is oxidized to sulfur or sulfur oxide, the remaining gas is left in the packing layer. After purification, the gas is discharged from the other end of the container.
經(jīng)過一系列處理后，去除沼氣中有害氣體，然后通過阻火器和電動(dòng)防爆蝶閥輸送至火炬中進(jìn)行燃燒，燃燒后的沼氣已無有害物質(zhì)，可直接排放至大氣中。
After a series of treatment, the harmful gas in biogas is removed, and then transported to the flare for combustion through flame arrester and electric explosion-proof butterfly valve. After combustion, the biogas has no harmful substances and can be directly discharged into the atmosphere.
The above is the analysis and introduction of the principle of biogas desulfurization tower equipment, I believe you all know something about it. If you want to know more, please click our http://www.bjlidejia.com Official website.
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2020-07-30
