An introduction to sulfur

Historically, the chain of sulfur products has been used by people for a long time. But the growth of its consumption is related to the 13th century AD. During that period, the Chinese discovered a black powder containing sulfur. With the development of chemical knowledge in the 11th century AD and its transformation into an industry in the 11th century AD, sulfur became known as a source of sulfuric acid production. An acid that plays an important role in today’s life. In the past, volcanic lava, especially in Sicily, Italy, was considered the most important source of sulfur supply. But later, with the discovery of the possibility of extracting this product from underground mines, its supply sources changed. Today, Canada, Holland, Spain, China and America have the largest amount of sulfur reserves in the world. It should be noted that most of Iran’s sulfur deposits are combined with sour gases and oil sources, which are produced and exported in large quantities today. Among the most important metamorphic sulfur deposits in Iran, in order of their reserves, are Bastane deposit in the west of Bandar Lange, Khemer deposit in the northwest of Khemer port, Dastkede deposit in the western end of Qeshm Island, Al-Tidan deposit in the west of Bandar Abbas, West Bandar Abbas deposit and Dalzian deposit in the south. Shargh Semnan pointed out. Sulfur is directly and indirectly used in various industries such as agricultural fertilizers, paints, paper, leather, fibers, explosives, pharmaceuticals, rubber, cleaners, batteries, etc., and currently more than 54% of sulfur produced in the world comes from Oil and gas are obtained. Isfahan Oil Refining Company, as one of the largest producers of petroleum products in the country, produces a significant amount of sulfur as a by-product during the process of refining petroleum and producing petroleum products. The purpose of these studies is to obtain a set of sulfur products that have What can be seen in this report is the market, technical, financial, and economic evaluation of the selected products of the project, which were selected in the course of the studies. The reports of each of the selected units are presented separately in the attachments. Sulfur production capacity in the northern refinery In the developed capacity, it is equal to 134 tons per day (equivalent to 444.03 tons per year) for 334 production days per year. The production of selected products should be used in this section. The selected products in the hydrogen sulfide sector are: • Sodium sulfide (Na2S) • Wet sulfuric acid (WSA) • Ammonium sulfate (AS) • Potassium sulfate (SOP) Sulfur production capacity in the South Refinery is currently equal to 154 tons per day. It is equivalent to 544,09 tons per year for 334 production days per year. This capacity will increase to 014 tons per day in the next 3 years (equivalent to 151,044 tons per year). be spent on the production of the following selected products: • Bentonite sulfur (SB) (Mic S), micronized sulfur • It was also decided that in the second phase, the rest of the sulfur produced (equivalent to 334 tons per day) will be spent on the production of the following products: • Sulphonic acid (LABSA) • Sulfuric acid • Sulfur covered urea (SCU) • Simple superphosphate (SSP)

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