MDEA (Methanol Diethanolamine) is a commonly used natural gas desulfurizer. During the processing of natural gas, MDEA is added to the solution to absorb sulfide, thereby reducing the sulfur content in natural gas. Although this method is very effective, organic impurities in the MDEA solution will continue to accumulate, causing problems such as concentration decline and pipeline corrosion.
1. Activated carbon for MDEA solution
MDEA (Methanol Diethanolamine) is a commonly used natural gas desulfurizer. During the processing of natural gas, MDEA is added to the solution to absorb sulfide, thereby reducing the sulfur content in natural gas. Although this method is very effective, organic impurities in the MDEA solution will continue to accumulate, causing problems such as concentration decline and pipeline corrosion.
Activated carbon for amine liquid filtration mainly uses granular activated carbon, with an iodine value above 900. It is mainly used to remove pollutants in the amine liquid solvent, reduce foaming problems, reduce scaling problems in the process, and reduce costs.
Activated carbon for amine liquid filtration is specially used to treat amine solutions (EDA, MEDA, etc.) in the oil refining, steelmaking, liquefied gas and natural gas processing industries. Amine Liquid Filtration Activated Carbon is commonly used in amine plants to remove H2S and CO2 from hydrocarbon vapors. This kind of activated carbon can effectively remove pollutants in amine solvents and reduce foaming problems. It has shown excellent adsorption properties when used in slipstream amine treatment applications.
2. Principle of mdea absorbing carbon dioxide
MDEA is an organic amine compound that can be used to absorb and remove carbon dioxide. The principle of absorbing carbon dioxide is achieved through a physical and chemical absorption mechanism.
When MDEA comes into contact with carbon dioxide, a chemical reaction occurs between the two substances, producing a compound called dimethylcarbonate. This compound is more soluble than carbon dioxide and can therefore be separated from the gas.
MDEA is very effective at absorbing carbon dioxide and can achieve a removal rate of over 99%. The advantage of this compound is that it does not have a negative impact on the environment and can work at lower temperatures. In addition, MDEA is renewable as it can be regenerated by heating to release the absorbed carbon dioxide.
This makes MDEA a very effective carbon dioxide absorber that can be used in many different applications, such as air purification and industrial waste gas treatment.
3. How to deal with used activated carbon
Activated carbon is a material that can absorb harmful substances and is often used to purify air and water. When the activated carbon adsorption is saturated, what should be done?
We can dry it in the sun for a few days to dry naturally. This can then be used in fertilizer making. Adding used activated carbon to compost promotes the decomposition of organic matter and increases soil fertility.
In addition, the used activated carbon can also be ground into powder and added to the plant growth medium to increase the plant's ability to absorb nitrogen, phosphorus, potassium and other nutrients.
If the above methods are not applicable, we can also send it to the local solid waste treatment center for processing. In the processing center, activated carbon can be incinerated, landfilled and other disposal methods together with other garbage.
When we use activated carbon, we must pay attention to choosing high-quality products and using them rationally. Avoid waste and environmental burden.
4. Can activated carbon be reused?
Activated carbon is an efficient adsorbent that can remove pollutants, odors and toxic and harmful substances from water. However, when activated carbon is saturated with adsorption, it can no longer continue to function, so reuse becomes a matter of great concern.
In fact, activated carbon can be reused. There are two main methods of reuse: thermal regeneration and chemical regeneration.
Thermal regeneration refers to burning and desorbing organic matter adsorbed on activated carbon through high temperature, so that the activated carbon can restore its adsorption performance. This method is suitable for situations where the adsorption of organic pollutants is relatively simple, such as the removal of organic matter in automobile exhaust.
Chemical regeneration refers to using some chemical methods to remove pollutants adsorbed on activated carbon so that the activated carbon can regain its adsorption performance. This method is suitable for some complex organic pollutants, such as the removal of toxic and harmful substances in industrial waste gas.
In practical applications, the effect of repeated use will also be affected by factors such as activated carbon quality and usage conditions. Therefore, the correct selection and use of activated carbon can extend the service life of activated carbon, reduce treatment costs, and protect the environment and health.