Industrial Fuel Gas Demonstration Plant Program. Task III report, demonstration plant mechanical design. Volume VII. Sulfur recovery; tail gas treating

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

OSTI ID:5651439

This section consists of a Claus type sulfur recovery unit employing a thermal reaction step with sulfur dioxide generation by oxidation of hydrogen sulfide followed by three stages of catalytic reaction in order to affect recovery of sulfur in excess of 96% of the sulfur content of the process gas streams fed to the unit. Prior to the reaction steps, acid gas from gas treating is preheated to 450/sup 0/F in the acid gas preheater using high pressure steam. In addition, combustion air is preheated to 460/sup 0/F in the process air preheater using high pressure steam. The acid gas is combusted at the burner resulting in the generation of SO/sub 2/. The Claus reaction proceeds in the second zone of the muffle furnace to form sulfur vapors. The hot process gas leaving the muffle furnace passes through the waste heat boiler where it is cooled to a temperature of 500/sup 0/F generating steam at 120 psig. The process gas is then further cooled in the first sulfur condenser to a temperature of 350/sup 0/F where sulfur is condensed and flows by gravity through a sulfur seal to the sulfur rundown pit. This step is essentially repeated two more times with reheated vapor for further removal of sulfur by the Claus process. The gas leaving the final sulfur condenser of the Claus unit flows to the tail gas treating unit at a temperature of 280/sup 0/F and a pressure of 3.0 psig for removal of the residual sulfur. The tail gas from the (Claus process) sulfur recovery unit is treated to remove essentially all of the remaining sulfur compounds before discharge to the atmosphere. The tail gas treating unit consists of a hydrogenation/hydrolysis section followed by a Stretford absorber section and Stretford solution oxidizer/sulfur recovery section.

• Research Organization: Memphis Light, Gas and Water Div., TN (USA)
• DOE Contract Number: EF-77-C-01-2582
• OSTI ID: 5651439
• Report Number(s): FE-2582-1(Vol.7)
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
DEMONSTRATION PLANTS
DESIGN
SULFUR
RECOVERY
U-GAS PROCESS
CLAUS PROCESS
COAL GASIFICATION
ENGINEERING
EQUIPMENT
GASEOUS WASTES
SPECIFICATIONS
STRETFORD PROCESS
WASTE PROCESSING
ELEMENTS
GASIFICATION
MANAGEMENT
NONMETALS
PROCESSING
THERMOCHEMICAL PROCESSES
WASTE MANAGEMENT
WASTES
010404* - Coal
Lignite
& Peat- Gasification
010402 - Coal
Lignite
& Peat- Purification & Upgrading