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沼氣提純精制天然氣脫硫技術(shù)的選擇

沼氣提純精制天然氣中脫硫技術(shù)路線的選擇應(yīng)重點(diǎn)考慮硫化氫濃度、處理規(guī)模、濃度波動(dòng)范圍、處理費(fèi)用等幾個(gè)方面。當(dāng)硫化氫濃度較高及處理規(guī)模較大時(shí),易采用堿洗生物再生脫硫技術(shù)和或堿洗催化再生脫硫技術(shù)。在運(yùn)行成本面前相對后者較低,但在抗?jié)舛茸兓瘺_擊方面,后者又優(yōu)于前者,同時(shí)在投資方面,后者也優(yōu)于前者。

The selection of desulfurization technology route in biogas purification and refining natural gas should focus on hydrogen sulfide concentration, treatment scale, concentration fluctuation range and treatment cost. When the concentration of hydrogen sulfide is high and the treatment scale is large, alkali washing biological regeneration desulfurization technology and alkali washing catalytic regeneration desulfurization technology are easy to be used. Compared with the latter, the latter is lower in terms of operation cost, but in terms of resisting the impact of concentration change, the latter is better than the former, and in terms of investment, the latter is also better than the former.
生物脫硫工藝是一種新型的脫硫工藝,越來越受到企業(yè)的歡迎。生物脫硫的基本原理是利用硫桿菌屬和絲硫茵屬類微生物代謝的作用,將硫化氫與氧氣合成為硫酸鹽進(jìn)而除去沼氣中的硫氫,脫硫產(chǎn)物為硫酸鹽。
Biological desulfurization process is a new type of desulfurization process, which is more and more welcomed by enterprises. The basic principle of biological desulfurization is to synthesize hydrogen sulfide and oxygen into sulfate and then remove hydrogen sulfide from biogas by utilizing the metabolism of microorganisms of Thiobacillus and sericin, and the desulfurization product is sulfate.
雖然其使用較為便捷,運(yùn)行成本較低,但由于脫硫過程中同時(shí)引入了雜質(zhì)氣體,在后續(xù)工序中無法去除,同時(shí)生物脫硫剛剛起步,技術(shù)還不成熟,大多使用進(jìn)口技術(shù)和設(shè)備,因此投資成本相對較高,大約為常規(guī)干法脫硫的3~5倍。
Although its use is relatively convenient and its operation cost is low, because impurity gas is introduced in the desulfurization process at the same time, it can not be removed in the subsequent process. At the same time, biological desulfurization has just started and the technology is not mature. Most of them use imported technology and equipment, so the investment cost is relatively high, about 3-5 times as that of conventional dry desulfurization.
生物脫硫塔
近幾年,國內(nèi)少數(shù)企業(yè)和科研機(jī)構(gòu)合作研究,根據(jù)沼氣項(xiàng)目及沼氣中硫化氫的特性,對堿洗催化再生脫硫技術(shù)進(jìn)行了大量富有成效的改進(jìn)和提升,特別是解決了像堵塔、再生效果不好、單質(zhì)硫不易拿出等高濃度硫化氫脫除上的難題。
In recent years, a small number of domestic enterprises and scientific research institutions have cooperated to study, according to the characteristics of biogas projects and hydrogen sulfide in biogas, a large number of fruitful improvements and improvements have been made to the alkali washing catalytic regeneration desulfurization technology, especially to solve the problems of high concentration hydrogen sulfide removal such as blocking tower, poor regeneration effect and difficulty in extracting elemental sulfur.
干法脫硫、PSA和膜法脫硫多適用于硫化氫初脫后的精脫硫,或氣量比較小、硫化氫濃度比較低的沼氣精制項(xiàng)目; 生物脫硫雖然運(yùn)行成本比較低,但因?yàn)橐肓舜罅康牡醯入s質(zhì)氣體而不宜在沼氣精制天然氣領(lǐng)域應(yīng)用。
Dry desulfurization, PSA and membrane desulfurization are mostly suitable for refined desulfurization after initial desulfurization of hydrogen sulfide, or for biogas refining projects with small gas volume and low concentration of hydrogen sulfide. Although biological desulfurization has low operation cost, it is not suitable to be applied in the field of biogas refining natural gas because of the introduction of a large number of impurity gases such as nitrogen and oxygen.

相關(guān)產(chǎn)品 我們的存在,是為了更好的服務(wù)于沼氣等可燃?xì)怏w凈化及利用行業(yè)
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