Changchun desulfurization catalyst manufacturer Dongshi brand dsy special desulfurization catalyst for kiln gas

  Kiln gas, also known as combustion furnace gas, is mainly processed through coal gasification, dry distillation and other processes
Due to its low use cost, such as specific oil, light oil, natural gas and liquefied petroleum gas, and the improvement of the current two-stage gas generator technology, it has effectively stabilized the roasting process in the later stage
Therefore, it is widely used in iron and steel, casting, glass, ceramics Alumina, lime, cement and other industries
The raw materials used for kiln gas production are mainly bituminous coal, lignite and blue coal
Due to the influence of production technology, the content of tar, coal ash and phenols in kiln gas is relatively high, which has a certain impact on the polymerization and flotation of sulfur foam, and sometimes even leads to blocking tower, which affects the long period and stable operation of the device
In this case, the gas purification design and research center of our company conducted hundreds of scientific experiments by simulating the composition of kiln gas and the actual desulfurization liquid composition, and finally developed a new generation of product: special desulfurization catalyst for kiln gas, which attracted great attention in the industry after it was put on the market
Its biggest characteristics are: strong anti-interference ability, high activity, strong foaming, strong oxidation ability, high efficiency and low by-salt generation rate
It is completely suitable for kiln gas desulfurization process under various conditions

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Characteristics of special desulfurization catalyst for kiln gas 1
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Special desulfurization catalyst for kiln gas can be well dissolved 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
35v
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In application, 20-30mg / L is appropriate
With the increase of catalyst concentration in the solution, the sulfur evolution selectivity increases continuously
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It has good chemical stability and does not decompose in acidic or alkaline medium
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It has good thermal stability, does not decompose below 260 ℃, and can still maintain stability under the operating conditions of sulfur melting kettle
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6 the catalyst itself is non-toxic and non corrosive, which is conducive to environmental protection
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The catalyst has stable activity, long service life and no catalyst poisoning caused by cyanide
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It can effectively remove both inorganic sulfur and organic sulfur dominated by cos

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Functions and characteristics of special desulfurization catalyst for kiln gas 2
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The desulfurization solution composed of this catalyst can be used to remove H2S, organic sulfide and HCN from kiln gas
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The content of H2S in the treated gas can be adapted to a wide range, and satisfactory results can be achieved within 10g / Nm3
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3 the gas purification degree is high, which can reduce the H2S after desulfurization to less than 10mg / Nm3
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4 low side reaction rate and high sulfur recovery rate in desulfurization process
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5, sulfur particles precipitated in the desulfurization process are large, sulfur foam flotation is good, easy separation and recovery
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6 due to the reaction of elemental sulfur to form polysulfide, the reaction process itself can inhibit and eliminate sulfur blocking the desulfurization tower
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The product is simple in pre activation and easy to use
It is used for the transformation of the old system or the replacement of catalyst without discharging the original desulfurization liquid, which is economical and environmental friendly
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This product has strong activity, low consumption and low comprehensive operation cost

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Main process conditions of special desulfurization catalyst for kiln gas 3
1 when using special desulfurization catalyst for kiln gas desulfurization, in order to improve desulfurization efficiency and minimize the temperature of kiln gas entering desulfurization tower, the purpose is to reduce the tar content in kiln gas and reduce the regeneration temperature of desulfurization solution
Under normal conditions, the temperature of kiln gas entering desulfurization system ≤ 35℃。 The content of Na2CO3 in the solution shall be maintained at 3-6g / L (depending on H2S after desulfurization), and the catalyst concentration shall be 15-30mg / L
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2 absorption temperature: kiln gas temperature 30-35 ℃
The temperature of desulfurization liquid is 3-5 ℃ higher than that of gas
Regeneration temperature 38-42 ℃
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3 liquid gas ratio: ≥ 12L/Nm33
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Blowing intensity of regeneration tank: 60 -- 110nm3 / m2 h3
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The total content of by salt (Na2S2O3 + Na2SO4 + NaSCN) in desulfurization solution shall be ≤ 250g/L。 3
6 tar content in kiln gas ≤ 30mg / Nm3, coal ash content ≤ 50mg/Nm3
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Application method of special desulfurization catalyst for kiln gas 4
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Desulfurization solution