Dongshi DZS biogas special desulfurization catalyst of Changchun desulfurization catalyst manufacture

  Biogas is a mixture of methane and carbon dioxide
As a new energy, it is used more and more widely
The methane content of its main components is 55% ~ 70%, and the carbon dioxide content is 30% ~ 44%
When biogas is produced from anaerobic fermentation unit, especially in medium temperature or high temperature fermentation, it carries a large amount of H2S, and the H2S content is about several grams to tens of grams / Nm3
Due to the existence of a large amount of water vapor in biogas, the joint action of water and H2S in biogas accelerates the corrosion and blockage of metal equipment pipelines
In addition, as a fuel, SO2 generated by H2S after biogas combustion is combined with the water vapor in the combustion products to form sulfite, which will corrode the metal surface of the equipment and pollute the atmospheric environment
It is strictly stipulated in China's environmental protection standards that when using biogas energy, the H2S content in biogas gas shall not exceed 20mg / Nm3
Therefore, H2S must be removed as much as possible in industrial or civil biogas
The DZS special desulfurization catalyst for biogas researched and developed by the gas purification design and research center of our company has attracted extensive attention in the industry because of its strong anti-interference ability, high activity, high sulfur capacity, strong oxidation ability, high efficiency and low by-salt generation rate

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Characteristics of DZS special desulfurization catalyst for biogas 1
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DZS special desulfurization catalyst for biogas has good solubility in water or alkaline solution
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2 under different alkali source conditions, the oxidation potential of the solution is 0
2-0
3v
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3
In application, the concentration should be 15-35mg / L
with the increase of catalyst concentration in solution, the sulfur evolution selectivity increases continuously
1
4
It has good chemical stability and does not decompose in acidic or alkaline medium
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5
Good thermal stability, no decomposition below 260 ℃
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6 the catalyst itself is non-toxic and non corrosive, which is conducive to environmental protection
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7
The catalyst has stable activity, long service life and no catalyst poisoning caused by cyanide

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Functions and characteristics of DZS special desulfurization catalyst for biogas 2
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The desulfurization solution composed of this catalyst can be used to remove hydrogen sulfide from biogas
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The gas purification degree is high, and the removal accuracy can be less than 10mg / Nm3
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3 low side reaction generation rate and high sulfur recovery rate in desulfurization process
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4, sulfur particles precipitated in the desulfurization process are large, sulfur foam flotation is good, easy separation and recovery
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5 due to the reaction of elemental sulfur polysulfide, the reaction process itself can inhibit and eliminate sulfur blocking tower
2
6
The product has strong activity, low dosage, simple pre activation during use, convenient use and low comprehensive operation cost

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Main process conditions of DZS special desulfurization catalyst for biogas 3
1 temperature of biogas entering the tower: 32 & mdash; 38℃ 。 3
2 desulfurization solution temperature: 36 & mdash; 40℃ 。 3
3 temperature of regeneration solution: 38 & mdash; 42℃ 。 3
4 liquid gas ratio: 12 & mdash; 30L/Nm3 。 3
5 regenerative blowing intensity: 60 & mdash; 110Nm3/m2
h 。 3
6 total content of by salt in desulfurization solution ≤ 250g/L 。 3
7 total alkalinity of desulfurization solution: 25 & mdash; 35g / L, and Na2CO3 concentration shall not be less than 3G / L
3
8 pH value: 8
2 & mdash; nine
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Application method of DZS special desulfurization catalyst for biogas 4
1 desulfurization solution