Dry desulfurization

NegotiableUpdate on 11/08

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Overview

Dry desulfurization: Dry desulfurization uses fixed desulfurization to remove small amounts of hydrogen sulfide and organic sulfide from the original gas. The advantage is that it can remove both hydrogen sulfide and organic sulfur, with a higher purification degree than wet desulfurization. It can remove H2S in the gas to below 20mg/m3. Common dry desulfurization methods include iron oxide method, activated carbon method, and zinc oxide method. Scope of application: Suitable for desulfurization (H2S) of various types of coal gas, biogas, and natural gas. The iron oxide desulfurization method is characterized by high strength, no pulverization when in contact with water, no impact on desulfurization, high porosity, large sulfur capacity, and high desulfurization efficiency. When O?/H in gas? When the S ratio is greater than 2.5, desulfurization and regeneration can be carried out simultaneously, showing a higher sulfur capacity. Activated carbon desulfurization method: When sulfur dioxide in the air is adsorbed on the surface by activated carbon, it is oxidized to sulfur trioxide due to oxidation, and then interacts with water vapor to form sulfuric acid, thereby removing sulfur monoxide from the air. In the presence of anhydrous steam, experiments have shown that O2 undergoes chemical adsorption on the surface of activated carbon and dissociates into atomic oxygen. The reaction control steps are SO2+O2-SO3, and the reaction rate is independent of the concentration of water vapor. The most widely used method for desulfurization at present is to directly pass the flue gas into the carbon bed through the catalytic oxidation of activated carbon to obtain sulfuric acid. From previous research, it has been found that the use of activated carbon, which can effectively purify the atmosphere or exhaust smoke at low costs at temperatures of 0-30 degrees and 70-200 degrees, is of great value in building its application system and striving towards a large-scale commercial scale.

Product Details

◆_{Dry desulfurization:}
_{Dry desulfurization is the use of fixed desulfurization to remove small amounts of hydrogen sulfide and organic sulfide from the original gas. The advantage is that it can remove both hydrogen sulfide and organic sulfur, with a higher purification degree than wet desulfurization, and can remove sulfuric acid from the gas}_H_?S_{Reduce to 20mg/m}³_{The commonly used dry desulfurization methods are as follows:}Iron oxide method_{Activated carbon method, zinc oxide method.}
_{Scope of application: Suitable for desulfurization of various types of coal gas, biogas, and natural gas (H)}_?S）。

◆_{Iron oxide desulfurization method}
_{Iron oxide desulfurizer has the characteristics of high strength, no pulverization when in contact with water, no impact on desulfurization, high porosity, large sulfur capacity, and high desulfurization efficiency. When O?/H in gas?When the S ratio is greater than 2.5, desulfurization and regeneration can be carried out simultaneously, showing a higher sulfur capacity.}

_{◆Activated carbon desulfurization method
When sulfur dioxide in the air is adsorbed on the surface by activated carbon, it is oxidized to sulfur trioxide due to oxidation, and then interacts with water vapor to form sulfuric acid, thereby removing sulfur monoxide from the air. In the presence of anhydrous steam, experiments have shown that O2 undergoes chemical adsorption on the surface of activated carbon and dissociates into atomic oxygen. The reaction control steps are SO2+O2-SO3, and the reaction rate is independent of the concentration of water vapor. The most widely used method for desulfurization at present is to directly pass the flue gas into the carbon bed through the catalytic oxidation of activated carbon to obtain sulfuric acid. From previous research, it has been found that the use of activated carbon, which can effectively purify the atmosphere or exhaust smoke at low costs at temperatures of 0-30 degrees and 70-200 degrees, is of great value in building its application system and striving towards a large-scale commercial scale.}