化合物脫硫
Compound desulfurization
常溫下，沼氣根據(jù)脫硫劑料層和沼氣中的沼氣H2S與活性化合物接觸，將硫化氫吸收到化合物的小孔中，產(chǎn)生三硫化二鐵。當(dāng)有水時(shí)，鐵的硫酸鹽轉(zhuǎn)化為化合物和硫單質(zhì)，脫硫再生過程可循環(huán)進(jìn)行。
At normal temperature, the biogas will absorb hydrogen sulfide into the pores of the compound according to the contact between the desulfurizer material layer and the biogas H2S in the biogas and the active compound to produce ferric sulfide. When there is water, the sulfate of iron is converted into compounds and elemental sulfur, and the desulfurization and regeneration process can be carried out circularly.
脫硫反映：
Desulfurization reaction:
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再生反映：
Regeneration reaction:
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該方法可在有氧或無氧環(huán)境中脫硫，操作溫度范圍廣(5-90°C),脫硫水平達(dá)到99%.強(qiáng)度高，脫硫技術(shù)成熟，效率高，投資低，操作成本高。當(dāng)脫硫劑飽和時(shí)，化合物也可以再生。
This method can be used for desulfurization in aerobic or anaerobic environment, with wide operating temperature range (5-90 ° C) and desulfurization level of 99%. It has high strength, mature desulfurization technology, high efficiency, low investment and high operating cost. When the desulfurizer is saturated, the compound can also be regenerated.
生物脫硫
Biological desulfurization
使用無色硫細(xì)菌，如氧化硫桿菌.氧化亞鐵硫桿菌，在微氧條件下氧化。H2S氧化成硫單質(zhì)。生物脫硫技術(shù)的關(guān)鍵是如何根據(jù)生物脫硫技術(shù)的要點(diǎn)H2S不同濃度控制反映中提供溶解氧的濃度H2S含量，進(jìn)入沼氣中2%16%的空氣，以滿足生物氧化硫酸鹽的需要。溫度適中.反應(yīng)速度和空氣量可以使反應(yīng)速度和空氣量能夠使反應(yīng)速度和空氣量能夠使反應(yīng)速度和空氣量能夠使反應(yīng)速度和空氣量能夠使H2S降低至50PPm。
Colorless sulfur bacteria, such as Thiobacillus ferrooxidans and Thiobacillus ferrooxidans, are used for oxidation under micro-oxygen conditions. H2S is oxidized to sulfur. The key of biological desulfurization technology is how to control the concentration of dissolved oxygen in the reaction according to the different concentration of H2S, the key point of biological desulfurization technology, and enter 2% 16% of the air in biogas to meet the need of biological oxidation of sulfate. The temperature is moderate. The reaction speed and air volume can make the reaction speed and air volume can make the reaction speed and air volume can make the reaction speed and air volume can make the reaction speed and air volume reduce the H2S to 50PPm.
滲碳工藝
Carburizing process
沼氣滲碳的常用方法主要有水洗法.胺洗法.變壓吸附法.膜分離法等。
The common methods of methane carburization include water washing, amine washing, pressure swing adsorption, membrane separation, etc.
滲碳工藝依據(jù):原料氣的組成.壓力.產(chǎn)品規(guī)格和質(zhì)量標(biāo)準(zhǔn).工藝的復(fù)雜性、可靠性和操作方便性.估價(jià)整體運(yùn)營成本和運(yùn)營成本等。
Carburizing process basis: composition of feed gas, pressure, product specification and quality standard, complexity, reliability and operation convenience of the process, evaluation of overall operating cost and operating cost, etc.
水洗法
Water washing method
洗滌法是一種物理吸收法，選用1-2MPa洗滌壓力，去除沼氣中的二氧化碳。水來源豐富，由于二氧化碳水的溶解度遠(yuǎn)高于甲烷，甲烷損失較小。
The washing method is a physical absorption method, which uses 1-2MPa washing pressure to remove carbon dioxide from biogas. The water source is rich. Because the solubility of carbon dioxide water is much higher than that of methane, the loss of methane is small.
胺洗法
Amine washing method
胺洗法的工作原理與水洗法相似，但用較強(qiáng)的酸性偏堿胺溶液代替普通水，可獲得較高的甲烷純度和較高的回收率，可同時(shí)去除硫化氫。
The working principle of the amine washing method is similar to that of the water washing method, but the higher purity of methane and the higher recovery rate can be obtained by replacing the ordinary water with the stronger acidic meta-alkali amine solution, and the hydrogen sulfide can be removed at the same time.
變壓吸附法
Pressure swing adsorption
二氧化碳在充壓過程中被吸收在某種材料表面，在充壓環(huán)境中被吸收。當(dāng)壓力降低時(shí)，二氧化碳自然釋放，然后再生吸收劑，循環(huán)。該技術(shù)被廣泛使用。甲烷純度高，可在室溫和非高壓下工作，無需加熱，經(jīng)濟(jì)節(jié)能；設(shè)備.操作簡(jiǎn)單，維護(hù)簡(jiǎn)單.可循環(huán).它可以完全自動(dòng)化。氣體中含有這種氣體。H2S它會(huì)吸附在吸附材料上，破壞吸附材料的結(jié)構(gòu)。
Carbon dioxide is absorbed on the surface of certain materials during the pressure filling process, and is absorbed in the pressure filling environment. When the pressure decreases, the carbon dioxide will be released naturally, and then the absorbent will be regenerated and recycled. This technology is widely used. With high purity of methane, it can work at room temperature and non-high pressure without heating, which is economical and energy-saving; Equipment. Simple operation, simple maintenance, recyclable. It can be completely automated. The gas contains this gas. H2S will adsorb on the adsorption material and destroy the structure of the adsorption material.
膜分離法
Membrane separation method
這種方法是近年來去除沼氣中酸性氣體的一種新方法。由于沼氣中各種氣體在中空纖維膜中的滲透速度不同，CO2等酸性氣體滲入速度快，先逸出，而甲烷氣體滲入速度慢，終逸出，達(dá)到分離效果。
This method is a new method to remove acid gas from biogas in recent years. Due to the different permeation rates of various gases in the biogas in the hollow fiber membrane, acid gases such as CO2 permeate quickly and escape first, while methane permeates slowly and finally escapes to achieve the separation effect.
適用于膜分離法CO2.原料氣分離含量強(qiáng)，選擇一級(jí)至二級(jí)膜分離可提高商品氣的純度?，F(xiàn)在市場(chǎng)上有很多電影制造商，但產(chǎn)品質(zhì)量水平不均勻。建議選擇MEDAL膜，性能穩(wěn)定.壽命長.CH4回收效率高的特點(diǎn)。并選擇工藝步驟。MEDAL專利設(shè)計(jì)，工藝步驟簡(jiǎn)單.整體撬裝占地空間小.移動(dòng)性強(qiáng)。此外，膜分離是一種物理分離，不存在吸收和再生問題，無變化，零污染問題，無動(dòng)設(shè)備，設(shè)備簡(jiǎn)單，能耗低。
It is applicable to membrane separation method with strong separation content of CO2. Feed gas. Selecting primary to secondary membrane separation can improve the purity of commercial gas. There are many film manufacturers on the market now, but the product quality level is uneven. It is recommended to select MEDAL membrane with stable performance, long service life and high recovery efficiency of CH4. And select the process step. MEDAL patented design, simple process steps, small overall skid space and strong mobility. In addition, membrane separation is a physical separation, without absorption and regeneration problems, no change, zero pollution problems, no moving equipment, simple equipment and low energy consumption.
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企業(yè)二維碼
2023-02-22
