Why price of MEA is unsteady ?
A CAGR of around 4% is forecast for the market for this compound. The market for this compound is mainly influenced by detergents, cosmetics, glyphosate herbicides and corrosion inhibitors. As the population grows and the agricultural industry expands, the market for this product will grow.
Amino alcohols have been produced industrially since the 1930s. However, their large-scale production began only after 1945, when the process of alkoxylation by ethylene oxide and propylene oxide replaced the older chlorine hydride process. In industry, amino alcohols are commonly defined as mines of alkanolamines. Ethanolamines (aminoethanols) and propanolamines (aminopropanols) are important compounds in this group. Both of these substances are widely used in the production of surfactant powders in gas treatment.
Its industrial production is obtained by the reaction of ethylene oxide with excess ammonia. This reaction is inherently slow and water is used to increase the rate of this reaction. In its anhydrous reaction, a fixed bed catalytic reactor is used. Its catalyst can be ion-exchange resin or a substance of this type and greater thermal stability (such as zeolite).
In all old processes, the reaction takes place in the liquid phase and has a high pressure to prevent the evaporation of ammonia and ethylene oxide at the reaction temperature. In today’s processes, the concentration of ammonia is between 50 and 100% and the pressure is about 16 MPa. The modern reaction temperature of monoethanolamine formation is more than 150 ° C and its molar ratio of ammonia to ethylene oxide is about 40 times. This reaction is extremely hot and its enthalpy is 125 kJ / mol of ethylene oxide.
Due to safety issues, ethylene oxide must be injected into the ammonia stream; However, if ammonia is added to the ethylene oxide stream, ammonia or amines may cause ethylene oxide to undergo an uncontrollable, explosive polymerization reaction. In all industrial processes of ethanolamine production, complete conversion of raw materials to ethanolamine is achieved without producing significant amounts of by-products. Therefore, the cost of raw materials is independent of the type of production process. On the other hand, production costs and especially energy costs largely depend on the composition of the product, factory design and the optimal amount of process energy consumption. Note that the same method produce two other materials from the same family called DEA and TEA.
In all industrial processes of monoethanolamine are designed for more than 99% purity and products are prepared with this purity. Water, diethanolamine, triethanolamine and a small amount of triethanolamine glycol ether are the main impurities in this process; All impurities are in the ppm range in other cases. The purity of the produce is determined by gas chromatography and the amount of water water remaining by karl fischer method.
Due to its solubility in water and reaction with other compounds, monoethanol amine is highly biodegradable and may not be stored in the aquatic food chain. Studies on a wide range of freshwater fish show that monoethanol amine has very low toxicity to fish.