Regarding the start-up of furnace heating for carbon removal
Thread Content
“The production line is started when the furnace chamber temperature reaches 500°C; the oxygen content is analyzed once per hour, with it to be kept at ≤2%, and carbon deposition in the system is strictly prohibited! ”Why is it necessary to analyze the oxygen content in this sentence? What are the main principles behind carbon analysis, as well as its causes and hazards? Please let me know, experts!
Analyzing the oxygen content ensures that the fuel in the furnace burns fully, preventing the formation of carbon black. If combustion is incomplete, the resulting carbon black adheres to furnace bricks, heat exchange tube bundles, tube walls, and valves, etc. During normal operation, some of this carbon black ends up in the liquid sulfur tank along with the liquid sulfur. First, it affects the heat exchange efficiency; second, it affects the quality of sulfur. Carbon decomposition principles: 2CO = C + CO2, CO + H2 = C + H2O, CH4 = C + 2H2
Analyzing the oxygen content is necessary to ensure that the fuel gas burns completely during furnace drying, thereby preventing the formation of carbon black. If combustion is incomplete, the resulting carbon black adheres to furnace bricks, heat exchange tubes, tube walls, and valves; during normal operation, some of this carbon black ends up in the liquid sulfur tank along with the liquid sulfur.
Can the protective steam applied before feeding material into the furnace, with the furnace heated to over 800 degrees, prevent carbon deposition?
In simple terms, it involves blocking the equipment to reduce the heat exchange area, clogging the catalyst, and increasing the pressure in the bed.
To avoid affecting the equipment and catalysts, all the processes we design include a dryer bypass.