Caustic Soda Applications
The diffuser is a NaOH chemical formula with a purity of 0.8% and is in the form of a solid material in the form of a filler (flex, pellet), granular or cast blocks. caustic soda is one of the most consumed chemicals as an industrial fat burner required by various industries, which has led these industries to always seek to produce the highest quality caustic soda. Let’s go.
Uses of Caustic Soda Applications in Industry:
Paper and pulp:
The most common use and application of caustic soda worldwide is in the paper industry. The use of caustic soda in the process of bleaching and bleaching, inks from recycled paper as well as in the water treatment sector.
The use of caustic soda in the textile industry is caustic soda for processing flax and dyeing synthetic fibers such as nylon and polyester.
Soap and Detergent:
Another important use of the caustic soda in the detergent industry is the use of sodium hydroxide for soap, a process that converts fats, fats and vegetable oils into soaps. It is also used to produce anionic surfactants, which is an essential ingredient in most detergents and detergents.
Another advantage of the leap is the use of bleach. Bleachers have many industrial and domestic applications such as fat cutting and mold and mold control.
Including the use of caustic soda for exploration, production and processing of oil and natural gas.
One of the important uses of sodium hydroxide or caustic soda in the aluminum industry is to dissolve bauxite ore, which is the raw material of aluminum production.
Sodium hydroxide in the form of peroxide or liquid soda is used as a raw material in the manufacture of a wide range of downstream products including: solvents, plastics, fabrics, adhesives, coatings, herbicides, dyes and inks, pharmaceuticals and many other materials.
Fabric: In this industry, the caustic soda flakes is used to clean, bleach and increase the shine and strength of the fabric.
Oil production and refining industry: Caustic soda is used as an adsorbent of carbon dioxide in light sections and as an adsorbent of sulfides in the refining of various oil sections. Caustic soda with chlorine is also used for the hypochlorite sweetening process, which is a process for removing various sulfur compounds.
Using soda ash instead: Soda ash is used as an alternative to soda in many applications in the glass, paper, pulp, phosphate and silicate industries.
Food production: Sodium hydroxide is used in the production and processing of several foods. Such as the use of caustic soda in the processing of olives or in the process of producing a kind of salt wood to create crispness. Peel soda is used to separate the skins of potatoes, tomatoes and other fruits for canning. Caustic soda is also used to prevent the growth of bacteria and mold in some foods and to prevent their spoilage.
Water and wastewater treatment: In water and wastewater treatment plants, the benefit of flakes is used to control the acidity of water and help to remove heavy metals from water. Caustic soda is also used in the preparation of sodium hypochlorite (bleach), which is a disinfectant.
Energy: Caustic soda is used in the production of fuel cells. Epoxy resins are used in the manufacture of epoxy resins used in wind turbines.
Renewable fuels: Caustic soda is used to regulate pH and sodium methylate production in the bioethanol and biodiesel production process.
Caustic Soda Production Process
Almost all of the caustic soda produced comes from the electrolysis of brine solution, in which one of the three cells of mercury, the diaphragm and the membrane, is used. In this process, 25.2 tons of caustic soda is produced per ton of chlorine.
The raw material in this process is ordinary salt, which is usually in the form of underground sediments that are brought to the surface by high pressure water pumps.
In conventional methods, electrolysis is performed by mercury or diaphragm amalgam cell processes, but the ion exchange membrane cell is expanding economically and ecologically. In the United States, diaphragm cell production is the most common method, while mercury and membrane cells are more common in Europe. This method has been rejected since 2010 due to environmental pressures on the old mercury cell method.
In the cell, mercury, sodium, and chlorine are converted to sodium amalgam, mercury, and chloride ions, respectively. The amalgam then reacts with water to form hydrogen gas and sodium hydroxide solution.
In the diagram cell, which is mainly made of asbestos, salt water flows from the anode to the cathode but separates in a separate space. When the hydrogen ions are separated, the hydroxide ions together with the sodium ions accumulate in aqueous solution around the cathode to produce sodium hydroxide. Reverse migration of hydroxide ions from the cathode to the anode is prevented by the flow of fluid from one part to another. Chlorine formed at the anode rises through the brine in the space created by the cell lining.
In the membrane process, the ion exchange membrane acts as a barrier against all liquid and gas currents, allowing only the passage of sodium ions between sections. Sodium ions pass hydrated sodium hydroxide solution through the cathode. Hydrogen is released at the cathode and at the anode. The membrane is actually a copolymer of tetrafluoroethylene or a given flora monomer.
Iran Caustic Soda
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