Method of hydrogen sulfide exhaust gas treatment method

Method of hydrogen sulfide exhaust gas treatment method

The method of hydrogen sulfide waste treatment mainly includes absorption, adsorption method, oxidation method, etc. The specific method depends on the specific conditions and needs of the exhaust gas. The following is a common treatment method:

Absorption method:

Physical absorption: Use physical solvents (such as water, alcohol, etc.) to absorb hydrogen sulfide. This method is simple but the absorption efficiency is relatively low.

Chemical absorption method: The use of chemical solvents (such as alkali and amine compounds) to absorb hydrogen sulfide. The chemical absorption method has the advantages of high absorption efficiency and fast response speed.

Adsorption method:

Activated carbon absorption attachment: The hypertensive of activated carbon is adsorbed to the hydrogen sulfide gas, which is suitable for treating low -concentration of hydrogen sulfide exhaust gas.

Other adsorption materials: such as molecular sieves, etc., suitable for treatment of hydrogen sulfide exhaust gas.

Oxidation method:

Dry oxidation: Direct hydrogen sulfide gas is directly oxidized to monomer sulfur or sulfur oxides, and is suitable for treating high -concentration of hydrogen sulfide gases.

Wet oxidation:

Oxidation reactions in liquid phase have the characteristics of large operating elasticity and high efficiency.

Other methods:

Direct combustion method: Introduce the tail gas containing hydrogen sulfide into the combustion chamber, burn it through oxygen or air, generate sulfur dioxide and water, and is suitable for occasions with higher hydrogen sulfide concentration in the tail gas.

Wet washing method:

The use of acid liquid or alkaline solution absorbs hydrogen sulfide and converts it into the corresponding sulfuric acid or sulfate, which is suitable for occasions with higher moisture content in the tail gas.

Biological treatment method:

The microbial decomposition of hydrogen sulfide is used to convert it into harmless substances, which is suitable for low -concentration of hydrogen sulfide waste gas treatment.

Non -balanced ion exchange method: The ionic exchange resin selectively adsorbed hydrogen sulfide, which is suitable for low -concentration of hydrogen sulfide exhaust gas treatment.