【Q&A No. 027】2018.01.27
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【Q&A No. 027】2018.01.27 What is carbon evolution? It is the phenomenon in which hydrocarbon-containing feedstocks undergo high-temperature cracking to produce carbon black during the conversion process. (Unless otherwise specified, all questions and answers are based on hydrogenation units.) ) Due to the limitations on the number of posts in the “One Question per Day” section, “One Image per Day” has been moved to the registered devices section; you can access it through the directory I posted. For management purposes, if you need to view content from a few days ago, please go through the summary post below. 2018 Chemical Engineering Technology Training – Daily Question Summary Thread: https://bbs.hcbbs.com/forum.php?mod=viewthread&tid=18889712018 Registered Equipment Section – Daily Image Summary Thread: https://bbs.hcbbs.com/forum.php?mod=viewthread&tid=1888970
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What is carbon analysis? Answer: It is the phenomenon in which hydrocarbon-containing feedstocks undergo high-temperature cracking to produce carbon black during the conversion process.
During the conversion process, the high-temperature cracking of hydrocarbon-containing feedstocks to produce carbon black.
Answer: During the conversion process, the high-temperature cracking of hydrocarbon-containing feedstocks results in the formation of carbon black.
Answer: During the conversion process, the high-temperature cracking of hydrocarbon-containing feedstocks results in the formation of carbon black.
Also known as the carbon dissolution loss reaction, carbon dissolution reaction, or gasification reaction; it is the reaction in which carbon monoxide dissociates into carbon dioxide and elemental carbon at high temperatures, or the reverse of this reaction. This is a balanced reaction, and the equilibrium gas composition depends on temperature and pressure. When the reaction proceeds to the right, heat is released and soot is precipitated; this is known as a carbon deposition reaction. The carbon produced may deposit on the catalyst, deactivating it – a side reaction that is undesirable in the chemical industry.
During the conversion process, the high-temperature cracking of hydrocarbon-containing feedstocks to produce carbon black.
During the conversion process, the high-temperature cracking of hydrocarbon-containing feedstocks to produce carbon black.
Reaction equations for carbon deposition: CH4 ≒ C + H2 – 74.9 kJ/mol; 2CO ≒ CO2 + C + 172.4 kJ/mol. The main reason for carbon deposition is usually an excessively low water-to-carbon ratio, which results in the carbon-removal reaction occurring at a slower rate than the carbon-deposition reaction. All of these chemical reactions are reversible
During the conversion process, the high-temperature cracking of hydrocarbon-containing feedstocks to produce carbon black.
“\"Carbon dissolution\" occurs during the heat treatment of steel alloys; the carbon element present in the alloy’s composition separates from the alloy matrix at high temperatures, resulting in a decrease in the carbon content in the surface layer of the workpiece – a phenomenon commonly known as \"decarburization\".