沼氣想要得到廣泛的應用，少不了沼氣提純這一步驟，沼氣經(jīng)過提純，可以極大程度上減少沼氣中水、碳化物和硫化物的成分，這也構成了沼氣提純設備的三大系統(tǒng)，下面就給大家詳細介紹一下，希望對大家有所幫助！
If biogas wants to be widely used, it needs the step of biogas purification. After biogas purification, it can greatly reduce the composition of water, carbides and sulfides in biogas. This also constitutes the three major systems of biogas purification equipment. Here we will give you a detailed introduction, hoping to be helpful to you all!
1.脫水、脫硫系統(tǒng)
1. Dehydration and desulfurization systems
水汽的去除主要在冷凝器中進行，從厭氧反應器出來含有飽和水汽的沼氣在經(jīng)過冷凝器時，其中所含水汽冷卻凝結(jié)，達到干燥的目的。
The removal of water vapor is mainly carried out in the condenser. The methane with saturated water vapor coming out of the anaerobic reactor is cooled and condensed in the condenser to achieve the purpose of drying.
H2S通過箱式脫硫設備去除，采用干法脫硫連續(xù)再生工藝。干法脫硫是在脫硫設備內(nèi)裝填一定高度的脫硫劑，沼氣自下而上通過脫硫劑，H2S被去除，實現(xiàn)脫硫過程，其中脫硫劑以氧化鐵為主要活性催化組分，并添加多種助催化劑與載體，在常溫常壓下通過催化作用去除H2S，脫硫率可達90%以上。處理凈化后沼氣中的H2S含量須低于200ppm。
H2S is removed by box desulfurization equipment, and the continuous regeneration process of dry desulfurization is adopted. Dry desulfurization is a process of desulfurization by filling a certain height of desulfurizer in the desulfurization equipment. Biogas is removed from bottom to top through desulfurizer, and H2S is removed. Among them, the desulfurizer takes iron oxide as the main active catalytic component, and adds a variety of promoters and carriers. The desulfurization rate can reach more than 90% by catalytic action at room temperature and pressure. After treatment and purification, the H2S content in biogas should be less than 200 ppm.
2.脫碳系統(tǒng)
2. Decarbonization system
變壓吸附，是一個近似等溫變化的物理過程，它是利用氣體介質(zhì)中不同組分在吸附劑上的吸附容量的不同，吸附劑在壓力升高時進行選擇性吸附，在壓力降低時得到脫附再生。
Pressure swing adsorption (PSA) is an approximate isothermal process. It utilizes the different adsorption capacity of different components on adsorbents in gas medium. The adsorbents are selectively adsorbed when the pressure rises and regenerated when the pressure decreases.
沼氣首先通過過濾器以去除氣體中的顆粒物質(zhì)；再被壓縮進入無油壓縮機，壓力達到大約2~4bar；再經(jīng)過一個用水冷卻的冷卻機以去除沼氣壓縮過程中產(chǎn)生的熱；后壓縮后的沼氣被輸送到吸附床，在那里CH4與CO、H2S以及沼氣中的其他成分分開。
Biogas is first filtered to remove particulate matter from the gas; then compressed into an oil-free compressor with a pressure of about 2-4 bars; then cooled by a water cooler to remove heat generated during the compression of biogas; and finally compressed biogas is transported to the adsorption bed, where CH4 is separated from CO, H2S and other components of biogas.
當吸附床飽和時，而且產(chǎn)氣不能夠再滿足低的天然氣純度時，吸附床須進行再生。吸附床的再生須要將床的壓力從運行壓力（2~4barg）降到大氣壓。利用一個通過微處理器控制的閥門管路來實現(xiàn)吸附床的在線和離線轉(zhuǎn)換。
When the adsorbent bed is saturated and the gas production can no longer meet the minimum natural gas purity, the adsorbent bed must be regenerated. The regeneration of the adsorbent bed must reduce the pressure of the bed from the operating pressure (2-4 barg) to the atmospheric pressure. An on-line and off-line conversion of the adsorption bed is realized by a valve pipeline controlled by a microprocessor.
沼氣經(jīng)過脫水、脫硫和脫碳系統(tǒng)處理，沼氣的CH4含量達到90%以上，達到可以作為天然氣利用的純度后，通過沼氣罐緩沖，由高壓天然氣運輸車運送場外銷售。
After dehydration, desulfurization and decarbonization, the methane content of CH4 reaches more than 90%, which can be used as the purity of natural gas. After being buffered by the methane tank, the methane is transported by the high-pressure natural gas transporter for off-site sale.
Okay, that's the highlight of this issue. I don't know if my little friends understand it after reading it. If you have any questions, you can always consult the official website of biogas purification online customer service personnel: http://www.shdhtech.com! Thank you very much for your support!
企業(yè)二維碼
2019-04-29
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