Fired Heaters with Steam Generation

Figure 3300-1 shows several items:

1. When 150 PSIG steam is generated (F10), the stack temperature is reduced to 450°F.

2. When 600 PSIG steam is generated (F20), the stack temperature is reduced to 600°F.

3. The higher the pressure of the steam generated, the more energy or work can be recovered in steam turbines.

4. The Atmospheric Fired Heater makes 40,500 pound/hour of 150 PSIG saturated steam while reducing the stack temperature from 758°F to 450°F. Fired Heater efficiency is improved from 78.2% to 85.8%.

5. The Vacuum Fired Heater could make either:
a. 24,500 pound/hour of 600 PSIG saturated steam while reducing the stack temperature from 900°F to 600°F. Fired Heater efficiency is improved from 74% to 82.2%.
b. An alternative not shown, 40,000 pound/hour of 150 PSIG steam, while reducing the stack temperature from 900°F to 450°F. Fired Heater efficiency is increased from 74% to 85.8%.

6. The investments, annual savings, and payout in years (before taxes) for making steam in the Crude and Vacuum Fired Heaters.

Crude Unit (Furnaces with Steam Generation)

12. June 2018 by sam
Categories: Waste Heat Recovery | Leave a comment

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