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沼氣提純技術(shù)關(guān)鍵參數(shù)介紹

沼氣提純主要目的是去除二氧化碳獲得高純度甲烷。沼氣提純技術(shù)多源于天然氣、合成氨變換氣的脫碳技術(shù)。由于沼氣的處理量遠(yuǎn)小于天然氣或合成氨變換氣,在脫碳技術(shù)選擇上應(yīng)更注重小型化、節(jié)能化。目前沼氣提純技術(shù)大致可分為:吸附、吸收、膜分離、低溫提純。
The main purpose of biogas purification is to remove carbon dioxide and obtain high-purity methane. Biogas purification technology mostly comes from the decarbonization technology of natural gas and synthetic ammonia. Since the treatment capacity of biogas is far less than that of natural gas or synthetic ammonia, more attention should be paid to miniaturization and energy saving in the selection of decarbonization technology. At present, biogas purification technology can be roughly divided into adsorption, absorption, membrane separation and low-temperature purification.
應(yīng)用廣泛的沼氣提純技術(shù)主要包括:變壓吸附、水洗、有機(jī)溶劑物理吸收、有機(jī)溶劑化學(xué)吸收、高壓膜分離和低溫提純。下表為六種沼氣提純技術(shù)的關(guān)鍵參數(shù)。
Widely used biogas purification technologies mainly include pressure swing adsorption, water washing, physical absorption of organic solvents, chemical absorption of organic solvents, high-pressure membrane separation and low-temperature purification. The following table shows the key parameters of six biogas purification technologies.
加壓水洗法用得多;在德國,變壓吸附法更為廣泛;在荷蘭,加壓水洗法、變壓吸附法和膜分離技術(shù)應(yīng)用都比較普遍。下表為五種沼氣提純技術(shù)的經(jīng)濟(jì)比較。
Pressurized water washing method is most used; In Germany, PSA is more extensive; In the Netherlands, pressurized water washing, pressure swing adsorption and membrane separation technology are widely used. The following table shows the economic comparison of five biogas purification technologies.
注:耗電成本(12~18歐分/kWh),耗熱成本(3~5歐分/kWh),水費(fèi)用為5歐元/m³(含污水處理費(fèi))。未考慮進(jìn)一步的處理成本(如分離硅氧烷或氨氣)。所有值都是基于滿負(fù)荷運(yùn)轉(zhuǎn)情況。
沼氣脫硫
Note: power consumption cost (12 ~ 18 euro cents / kWh), heat consumption cost (3 ~ 5 euro cents / kWh), water cost is 5 euro / M & sup3; (including sewage treatment fee). Further treatment cost (such as separation of siloxane or ammonia) is not considered. All values are based on full load operation.
沼氣提純成本與原料氣甲烷含量以及成品甲烷含量有關(guān)甲烷含量高的原始沼氣提純成本更低。這主要由于能量輸出的增加,而總成本與高能級有關(guān)。可以通過提高效率(降低單位輸出能耗),使用高熱值的原始沼氣降低實(shí)際能耗,從而降低成本。
The cost of biogas purification is related to the methane content of feed gas and finished products. The cost of raw biogas purification with high methane content is lower. This is mainly due to the increase of energy output, and the total cost is related to the high energy level. The actual energy consumption can be reduced by improving the efficiency (reducing the energy consumption per unit output) and using the original biogas with high calorific value, so as to reduce the cost.
沼氣提純站的經(jīng)濟(jì)效益還與其他因素有關(guān),例如,可操作性和額定負(fù)荷。沼氣提純站的額定運(yùn)行負(fù)荷不僅取決于提純站自身的高度穩(wěn)定性,而且與原始沼氣流量和后續(xù)單元(如充電站和加氣站)的可靠性有關(guān)。
The economic benefit of biogas purification station is also related to other factors, such as operability and rated load. The rated operating load of biogas purification station not only depends on the high stability of the purification station itself, but also related to the original biogas flow and the reliability of subsequent units (such as charging station and gas filling station).
停機(jī)時間短,設(shè)備運(yùn)行良好,在額定負(fù)荷和足夠原料氣的條件下設(shè)備能正常連續(xù)運(yùn)行,是一個沼氣提純站高效可用的標(biāo)準(zhǔn)??焖夙憫?yīng)時間非常必要,因此由技術(shù)供應(yīng)商提供良好網(wǎng)絡(luò)服務(wù)至關(guān)重要。此外,還可以采用遠(yuǎn)程監(jiān)控,當(dāng)操作被中斷,技術(shù)人員可以直接發(fā)現(xiàn)故障,根據(jù)故障類型立即采取必要的補(bǔ)救措施,避免了時間延誤,不需要服務(wù)技術(shù)人員長途跋涉到達(dá)現(xiàn)場解決問題。
With short shutdown time and good equipment operation, the equipment can operate normally and continuously under the condition of rated load and sufficient feed gas. It is an efficient and available standard for biogas purification station. Fast response time is very necessary, so it is very important for technology suppliers to provide good network services. In addition, remote monitoring can also be adopted. When the operation is interrupted, technicians can directly find the fault and take necessary remedial measures immediately according to the fault type, so as to avoid time delay and do not need service technicians to travel long distances to the site to solve the problem.
以上就是沼氣脫硫給大家分享的主要內(nèi)容,更多的精彩內(nèi)容請大家繼續(xù)關(guān)注我們:http://www.fengkecheng.cn
The above is the main content of biogas desulfurization. Please continue to pay attention to us for more wonderful contents: http://www.fengkecheng.cn

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