近年來(lái)，在沼氣提純技術(shù)和設(shè)備研發(fā)領(lǐng)域開展了一系列的研究工作，在化學(xué)吸收、變壓吸附等技術(shù)領(lǐng)域已開發(fā)有可商業(yè)化應(yīng)用的提純?cè)O(shè)備，變壓吸附法、水洗法和化學(xué)吸收法由于設(shè)備和技術(shù)工藝比較成熟，在沼氣提純領(lǐng)域的市場(chǎng)份額超過(guò)90%。國(guó)內(nèi)已建成多個(gè)沼氣提純生物天然氣示范項(xiàng)目，如煙臺(tái)雙塔4萬(wàn)m3沼氣提純項(xiàng)目、龍口煙臺(tái)環(huán)能公司3萬(wàn)m3沼氣提純車用燃?xì)馐痉俄?xiàng)目、南陽(yáng)天冠10萬(wàn)m3沼氣提純項(xiàng)目等。
In recent years, a series of research work has been carried out in the field of biogas purification technology and equipment research and development. In the field of chemical absorption, PSA and other technical fields, commercially applicable purification equipment has been developed. As the equipment and technology of PSA, water washing and chemical absorption are relatively mature, their market share in the field of biogas purification exceeds 90%. Several biogas purification demonstration projects have been completed in China, such as Yantai double tower 40000 m3 biogas purification project, Longkou Yantai Huaneng company 30000 m3 biogas purification vehicle gas demonstration project, Nanyang Tianguan 100000 m3 biogas purification project, etc.
2015年，我國(guó)沼氣發(fā)展進(jìn)入轉(zhuǎn)型升級(jí)期，國(guó)家支持建設(shè)規(guī)?；锾烊粴忭?xiàng)目，2015年全國(guó)建設(shè)25個(gè)，2016年全國(guó)建設(shè)22個(gè)，沼氣提純生物天然氣技術(shù)迎來(lái)新的發(fā)展契機(jī)，項(xiàng)目要求日產(chǎn)天然氣10000 m3以上，每小時(shí)處理沼氣量應(yīng)在700 m3以上，化學(xué)吸收和變壓吸附技術(shù)能滿足項(xiàng)目要求。四川某公司研發(fā)的沼氣提純專用吸附劑，解決了變壓吸附法甲烷損失大的缺點(diǎn)，進(jìn)一步降低了運(yùn)行成本，甲烷回收率超過(guò)99%，CH4含量97%～99%，能夠滿足沼氣提純的要求。該技術(shù)已在貴州省茅臺(tái)生態(tài)循環(huán)經(jīng)濟(jì)產(chǎn)業(yè)示范園生物天然氣及生物肥項(xiàng)目上應(yīng)用（2015年生物天然氣試點(diǎn)項(xiàng)目之一）。
In 2015, China's biogas development entered a period of transformation and upgrading. The state focused on supporting the construction of large-scale biogas projects. In 2015, there were 25 projects nationwide, and in 2016, there were 22 projects nationwide. Biogas purification and biogas technology ushered in a new development opportunity. The project requires a daily natural gas output of more than 10000 m3 and an hourly biogas treatment capacity of 700 Above m3, chemical absorption and PSA technology can meet the project requirements. The special adsorbent for biogas purification developed by a company in Sichuan has solved the problem of large loss of methane by PSA and further reduced the operation cost. The methane recovery rate is more than 99%, and the CH4 content is 97% - 99%, which can meet the requirements of biogas purification. This technology has been applied in the project of bio natural gas and bio fertilizer of Maotai eco circular economy industrial demonstration park in Guizhou Province (one of the pilot projects of bio natural gas in 2015).
與世界水平相比，在基礎(chǔ)研究、以及設(shè)備成套化開發(fā)方面還有一定的差距，特別是在適合大量中等規(guī)模沼氣工程應(yīng)用的成套化提純?cè)O(shè)備的研發(fā)方面，所開展的工作還遠(yuǎn)遠(yuǎn)不夠。
Compared with the advanced level in the world, there is still a certain gap in basic research and complete set of equipment development, especially in the research and development of complete set of purification equipment suitable for a large number of medium-sized biogas projects.
甲烷的溫室效應(yīng)是二氧化碳的21倍，全球溫室效應(yīng)氣體20%來(lái)自甲烷，沼氣提純生物天然氣可高值化利用沼氣，有效減少沼氣工程因沼氣利用不充分而排空，進(jìn)一步降低碳排放。生物天然氣是一種可再生的替代能源，因此沼氣提純生物天然氣具有環(huán)保和能源雙重效益，發(fā)展前景廣闊。
The greenhouse effect of methane is 21 times that of carbon dioxide. 20% of the global greenhouse effect gases come from methane. Biogas purification and bio natural gas can use biogas with high value, effectively reduce the emission of biogas engineering due to the inadequate use of biogas, and further reduce carbon emissions. Biogas is a kind of renewable alternative energy, so biogas purification of biogas has double benefits of environmental protection and energy, and has a bright future.
在沼氣提純技術(shù)中，化學(xué)吸收法、膜分離法和變壓吸附法在國(guó)內(nèi)外都是較為成熟的提純技術(shù)，在國(guó)內(nèi)外應(yīng)用較多，各自具有不同的技術(shù)特點(diǎn)，可根據(jù)需要選擇，如處理沼氣量較小可選擇膜分離法，處理沼氣量較大可選擇能耗較小的變壓吸附法。
In biogas purification technology, chemical absorption method, membrane separation method and pressure swing adsorption method are relatively mature purification technologies at home and abroad, which are widely used at home and abroad. They have different technical characteristics, and can be selected according to needs, such as membrane separation method for small biogas treatment, pressure swing adsorption method for small energy consumption for large biogas treatment.
現(xiàn)代能源體系由于高度的復(fù)雜性和巨大的規(guī)模，表現(xiàn)出極大的慣性，規(guī)劃和建設(shè)新的能源基礎(chǔ)設(shè)施通常需要很長(zhǎng)的時(shí)間，這是新能源產(chǎn)業(yè)化發(fā)展面臨的一個(gè)突出障礙。沼氣提純加工成生物天然氣后可以完全替代天然氣，能夠成功避開這一障礙，因此隨著天然氣消耗量的不斷增加，沼氣提純生產(chǎn)生物天然氣的市場(chǎng)規(guī)模也會(huì)持續(xù)增大，這勢(shì)必會(huì)推動(dòng)沼氣提純技術(shù)的快速發(fā)展。
Due to the high complexity and huge scale of modern energy system, it shows great inertia. It usually takes a long time to plan and build new energy infrastructure, which is a prominent obstacle to the development of new energy industrialization. Biogas purification and processing can completely replace natural gas, which can successfully avoid this obstacle. Therefore, with the increasing consumption of natural gas, the market scale of biogas purification and production will continue to increase, which is bound to promote the rapid development of biogas purification technology.
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