Distillation: processes – separatory – And recovering heat by indirect heat exchange – Utilizing recovered heat for heating the distillation zone
Patent
1985-02-26
1986-10-07
Bascomb, Wilbur
Distillation: processes, separatory
And recovering heat by indirect heat exchange
Utilizing recovered heat for heating the distillation zone
203 26, 203 74, 202154, 202158, 202237, B01D 326, B01D 128
Patent
active
046157700
ABSTRACT:
Dual interrelated distillation columns are disclosed wherein the heat from a first column is transferred by thermal conduction through a common wall or surface to a second column to increase efficiency and decrease waste of energy. In one embodiment, the first heat generating column is a cylindrical column, and the second column is an annular column concentric to the first column. This concentric arrangement permits the heat generated in the first column to flow outwardly into the second column, thereby improving its efficiency and reducing the heat loss. Typically, the inner first column is a high pressure rectifying column, and the outer concentric column is a stripping column. In an alternate embodiment, the inner column can simply be a portion of a high pressure distillation process, and the outer column is a portion of a lower pressure distillation column. In alternate embodiments, the rectifying apparatus can assume a variety of shapes such as a plurality of packed tubes which extend through the stripping column or a corrugated configuration or rectangular configuration as desired.
REFERENCES:
patent: 1257470 (1918-02-01), Filippo et al.
patent: 2070100 (1937-02-01), Twomey
patent: 2231828 (1941-02-01), Kerr
patent: 2317101 (1943-04-01), Lecky
patent: 2578469 (1951-12-01), Goldsbarry et al.
patent: 2760351 (1956-08-01), Schilling
patent: 3003930 (1961-10-01), Pugh et al.
patent: 3098107 (1963-07-01), Becker
patent: 3189531 (1965-06-01), Hack et al.
patent: 3563047 (1971-02-01), Hoffman
patent: 3568461 (1971-03-01), Hoffman
patent: 3632334 (1972-01-01), Quintin
patent: 3844898 (1974-10-01), De Graff
patent: 3959085 (1976-05-01), De Graff
patent: 4025398 (1977-05-01), Haselden
patent: 4234391 (1980-11-01), Seader
patent: 4306940 (1981-12-01), Zenty
patent: 4308107 (1981-12-01), Markfort
Tyreus, B. D. et al., "Two Towers Cheaper Than One?", Hydrocarbon Processing, Jul. 1975, pp. 93-96.
O'Brien, N. G., "Reducing Column Steam Consumption", CEP, Jul. 1976, pp. 65-67.
Petterson, W. C. et al., "Energy-Saving Schemes In Distillation", Chemical Engineering, Sep. 26, 1977, pp. 79-86.
Mah, R. S. H. et al., "Distillation With Secondary Reflux and Vaporization: A Comparative Evaluation", AIChE Journal, Sep. 1977, vol. 23, No. 5, pp. 651-658.
Kayihan, F., 70th Annual AIChE Meeting, "Optimum Distribution of Heat Load In Distillation Columns Using Intermediate Condensers & Reboilers", Nov. 13-17, 1977.
Fitzmorris et al., "Improving Distillation Column Design Using Thermodynamic Availability Analysis", AIChE Journal, vol. 26, No. 2, Mar. 1980, pp. 265-273.
Shimizu, K. et al., "Dynamic Characteristics of Binary SRV Distillation Systems", Computers and Chemical Engineering, vol. 7, No. 2, pp. 105-122, 1983.
Rathore, Ram N. S., "Reusing Energy Lowers Fuel Needs of Distillation Towers", Chemical Engineering, Jun. 14, 1982, pp. 155-159.
Schluter, L. et al., "A Present Trend in Rectification: Energy Saving", International Chem. Eng., vol. 23, No. 3, Jul. 1983, pp. 427-438.
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