Heat balance in the sump phase preheater, Luetzkendorf

Technical Report · Wed Feb 11 04:00:00 EDT 1942

OSTI ID:7307581

Results are presented of tests done on the Luetzkendorf preheater. Data are included for four cases: actual operating conditions; Case 1, increasing the inlet temperature in the regenerator from 50 to 60/sup 1/C and thus increasing throughput by one ton/hr; Case 2, raising the inlet temperature of the heating gases from 565 to 573/sup 0/C and thus increasing throughput by 0.9 tons/hr; and Case 3, additional increase by using new hairpins at 585/sup 0/C thus increasing throughput by 1.1 tons/hr. The computations were made assuming that 9.5 tons/hr was the amount recirculated; that there were 3 tons/hr HOLD (heavy oil let down) residue; that 450/sup 0/C was the let down temperature; that there were 14,000 m/sup 3//hr inlet gas; that the heat effect was sufficiently large to cover radiation losses and no cold gas was used; that the K value was 130,000 cal/m/sup 2/; that radiation losses were 200,000 K cal/hr in regeneration, and 400,000 K cal/hr in hot circuit and preheater; and that there were 53,000 m/sup 3//hr of heating gas used. At operating conditions the throughput was 10.3 tons/hr, the regeneration temperature range was 450 to 137/sup 0/C and 50 to 294/sup 0/C, the K value was 130 cal//sup 0/C-hr-m/sup 2/, the heat efficiency was 2900 x 10/sup 3/ cal/hr, and the preheater temperature range was 565 to 408/sup 0/C and 329 to 458/sup 0/C. These values were also given to Cases 1, 2, and 3.

• Research Organization: I.G. Farbenindustrie, A.G., Merseburg (Germany)
• OSTI ID: 7307581
• Report Number(s): TOM-237-106-108
• Country of Publication: United States
• Language: English

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