North American 4950- -D Flame Grid with Duct Section
Sheet 4950-4 Ref: Bulletin 4950
For maximum installation convenience, 4950 Flame Grid Fume Destructor Burners are available assembled to refractory-lined cylindrical steel duct sections of short length. Careful matching of components and factory installation of the burner ensures a correctly proportioned unit for thorough incineration of fumes, odors, and smoke, provided sufficient oxygen is present in the effluent. The preassembled duct section, designated 4950- -D, can be attached by welding or compression bands to upstream and downstream duct sections supplied by the customer. Sections with exterior cylindrical dimensions matching the 4950- -D unit often are available from manufacturers of prefabricated chimneys and stacks. When installing, use enough upstream duct sections to ensure uniform air flow through the Flame Grid. Avoid elbows or tees too close to the burner (three duct diameters minimum). Duct dimensions downstream of the burner will be determined by residence time requirements. To be sure all effluent reaches incineration temperature, size the afterburner chamber to retain burner products for about 0.5-0.6 seconds (its inside cross-sectional area must be at least twice the nominal burner area; e.g., 240 sq in. for 4950-2012). The afterburner chamber should be constructed to withstand operating temperatures up to 1500°F. Actual operating temperature will vary with the type of pollution handled.
DIMENSIONS inches Refer to Bulletin 4950 for detailed burner dimensions.
The standard 4950- -D dœs not have a refractory plug between the burner base plate and the grid plates.
FLOW
D
L
Burner
Wt,
Burner
Wt,
designation
D
L
lb
designation
D
L
lb
4950-0812-D 4950-1212-D 4950-1412-D 4950-2012-D 4950-1424-D
23
16 16 16 16 19
320 387 378 550 772
4950-2024-D 4950-2624-D 4950-3624-D 4950-2648-D 4950-3648-D
44 50 57 65 78
19 19 19 19 19
1023 1267 1555 1971 2755
26 ½ 26 ½ 33 ½
37
DIMENSIONS SHOWN ARE SUBJECT TO CHANGE. PLEASE OBTAIN CERTIFIED PRINTS FROM FIVES NORTH AMERICAN COMBUSTION, INC. IF SPACE LIMITATIONS OR OTHER CONSIDERATIONS MAKE EXACT DIMENSION(S) CRITICAL .
WARNING: Situations dangerous to personnel and property may exist with the operation and maintenance of any combustion equipment. The presence of fuels, oxidants, hot and cold combustion products, hot surfaces, electrical power in control and ignition circuits, etc., are inherent with any combustion application. Components in combustion systems may exceed 160°F (71°C) surface temperatures and present hot surface contact hazard. Fives North American Combustion, Inc. suggests the use of combustion systems that are in compliance with all Safety Codes, Standards, Regulations and Directives; and care in operation.
CONTACT fna.sales@fivesgroup.com T +1 800 626 3477 - F +1 216 373 4237
Fives North American Combustion, Inc. 4455 East 71st Street - Cleveland, OH 44105 - USA www.fivesgroup.com
Made with FlippingBook flipbook maker