This chart can be designed for a 75x100cm board and  illustrates the industrial process for producing concentrated Sulphuric acid, known as the Contact Process.

Content:

• Title: Large and centered – “Contact Process for Concentrated Sulfuric Acid Production”

1. Sulfur Feed:

   •  Label “Sulfur (S)”

2. Combustion:

   •  Label “Combustion (Δ)” with S + O2 -> SO2 reaction inside. (Δ symbol indicates heat input)

3. Gas Cleaning:

   •  Label “Gas Cleaning” (removes impurities like dust)

4. Conversion (1st Stage):

   •   “Conversion (V2O5 catalyst, Δ)”
   • Includes the reaction: 2SO2 (g) + O2 (g) <=> 2SO3 (g) (ΔH < 0) next to the rectangle. (V2O5 represents the vanadium pentoxide catalyst)

5. Cooling:

   • Label “Cooling” (lowers gas temperature for better conversion)

6. Absorption:

   •  Label “Absorption (H2SO4)”
   • Briefly describes the absorption of SO3 into concentrated sulfuric acid (H2SO4) to form oleum (H2S2O7).

7. Oleum Dilution:

   •  Label “Oleum Dilution (H2O)” with H2S2O7 + H2O -> 2H2SO4 reaction inside.

8. Product:

   • At the bottom labeled “Concentrated Sulfuric Acid (H2SO4)”

Additional Considerations:

• Uses arrows to show the flow of materials between process units.
•  color-coding the flow lines for different gas streams (e.g., red for SO2, blue for SO3).
•  small visuals for equipment like  heat exchangers and absorption towers.