Industrial Fuel Gas Demonstration Plant Program. Task III report, demonstration plant mechanical design. Volume VI. Sour water stripping

Technical Report · Sat Dec 01 00:00:00 EST 1979

OSTI ID:5721807

In this section, sour condensate generated within the process is treated for the removal of H/sub 2/S and NH/sub 3/. The two distinct forms of sour water generated - one being a 6% slurry and the other solids-free process condensate - required special design considerations. Since a trayed tower would plug if used to strip slurry, a baffled tower is used instead. Since the concentration of absorbed H/sub 2/S and NH/sub 3/ is relatively low for the slurry case, the low stripping efficiency of baffled towers was not a problem. A trayed tower of conventional design is used for the solids-free sour process condensate. Slurry water reporting from gas cooling and scrubbing is stripped of H/sub 2/S and NH/sub 3/ by means of live steam within slurry water stripper. Stripped slurry water exiting the slurry water stripper at a temperature of 271/sup 0/F is cooled to 95/sup 0/F by means of slurry sour water exchanger and slurry water cooler, after which it passes to the clarifier in the utility area. Overhead stripping steam from the slurry water stripper is introduced at an intermediate feed point to the sour water stripper. This double use of live-stripping steam provides for an economical use of stripping steam overall. The sour water stripper overhead vapors are cooled and partially condensed to a temperature of 220/sup 0/F in stripper overhead condenser. The vapor portion of the flow being separated from the condensate flows to sulfur recovery and the condensate returned to the sour water stripper as reflux. Stripped water pumped from the bottom of the sour water stripper by means of stripper water pump is cooled from a temperature of 268/sup 0/F to 95/sup 0/F in the sour water preheater and stripped water cooler. The cooled stripped water is sent to the waste water treatment section.

• Research Organization: Memphis Light, Gas and Water Div., TN (USA)
• DOE Contract Number: EF-77-C-01-2582
• OSTI ID: 5721807
• Report Number(s): FE-2582-1(Vol.6)
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
U-GAS PROCESS
DESIGN
AMMONIA
COAL GASIFICATION
CONDENSATES
DEMONSTRATION PLANTS
ENGINEERING
EQUIPMENT
HYDROGEN SULFIDES
PROCESSING
RECOVERY
REMOVAL
SPECIFICATIONS
SULFUR
WASTE WATER
WATER TREATMENT
CHALCOGENIDES
ELEMENTS
GASIFICATION
HYDRIDES
HYDROGEN COMPOUNDS
LIQUID WASTES
NITROGEN COMPOUNDS
NITROGEN HYDRIDES
NONMETALS
OXYGEN COMPOUNDS
SULFIDES
SULFUR COMPOUNDS
THERMOCHEMICAL PROCESSES
WASTES
WATER
010404* - Coal
Lignite
& Peat- Gasification