Our factory is a boiling roasting, pickling and purification, two-turn and two-suction process. Please ask for relevant process indicators.
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Our factory adopts the process of boiling roasting, pickling and purification, and two rotations and two suctions. What are the relevant process indicators? What is the range of the acid temperature of the dry suction tower?
You have to make it clear what indicators are required. Generally, the acid temperature at the entrance of the drying tower is 45 to 55 degrees, and the acid temperature into the absorption tower is 50 to 60 degrees. If a high-temperature absorption process is used, the temperature should be higher.
Oh, I know, almost haha, thank you.
The acid temperature entering the drying tower is less than 45 degrees, the temperature leaving the tower is less than 55 degrees, the first suction inlet temperature is less than 65, the outlet temperature is less than 75 degrees, the second suction inlet temperature is less than 50 degrees, and the outlet temperature is less than 70 degrees
boiling furnace: SO2 % (converter inlet, that is, gas concentration indicated on the surface) 7~7.5% burnout rate: ≥98.5%. Residual S ≤ 0.5%, brown or dark brown 2. Operating indicators: Negative pressure at the top of the furnace -5~-10mmH2O, pressure at the bottom of the furnace 750-950mmH2O (depending on the type of ore and particle size). The discharge port is slightly negative pressure, and there is no positive pressure to cause fire. The boiling layer temperature is 850-950℃. Purification process indicators: Main fan outlet gas dust content 5mg/Nm³ Operating indicators: 1. Gas temperature: Venturi outlet ≤60℃ Packed tower outlet <35℃ Resistance drop: Venturi tube＜2000Pa Packed tower＜2000Pa Conversion process index: SO2 concentration entering the converter: 7.0----7.5% One conversion rate: 85≥% Total conversion rate ≥98.5% Acid mist: ≤0.03g/Nm³ Moisture ≤0.1g/Nm³ Dust: ≤5mg/Nm³ Fluorine: ≤1mg/Nm³ Arsenic: ≤1mg/Nm³ 1 Operating indicators: Catalyst inlet temperature: 415℃ one stage outlet temperature: 99.9% temperature: Drying tower inlet air temperature <38℃ Acid temperature: 40-55℃ The inlet temperature of the first suction tower is >160℃ The inlet acid temperature is 45-85℃ The inlet temperature of the second suction tower is >120℃ The inlet acid temperature is 45-75℃ Acid concentration Dry acid concentration: 92.5%-93.5% 1, 2 absorb acid concentration: 98-98.8% resistance reduction: The drying tower and absorption tower are both less than 2000Pa