ZEECO, INC.

ZEECO, INC.

Ultra-Low Emissions Burners (Single Jets)

Round Flame Shape, Ultra-Low NOx Emissions Gas

Burners for Refinery and Chemical Plant Applications

ZEECO, INC.

Overall Design

Zeeco has taken a conventional single tip with a cone design

burner and enhanced the concept using the same, tip, cone and

tile, to achieve Low NOx emissions.

ZEECO, INC.

Overall Design Cont.Burner Tips (Gas Orifice)

Controls Gas Flow

Burner Tile (Air Orifice)

Controls Air Flow

Pilot

Damper Blades (Controls Excess Air)

Muffler Noise (Reduction)

Windbox (Guide Air Through Burner)

Tile Case and

Mounting Plate

ZEECO, INC.

Design Summary

Round flame or Flat flame gas burner design

NOx reduction method: Internal Flue Gas Recirculation (IFGR), staged fuel, and staged air. Combustion air induction: natural, forced, induced and balanced draft, or turbine exhaust

Mounting options: up-fired, side-fired and down-fired

ZEECO, INC.

How It WorksInert Flue

Gas

Combustion Air

Fuel Gas

Firing PortsIFGR Zone

Combustion Air Zone

Staged Air Zone

ZEECO, INC.

Single-Jet Standard Features

One (1) 60% Al2O3 4 Piece Secondary Tile

One (1) 310SS Gas Tip

One (1) Sch 40, CS Gas Risers

One (1) 10 Gauge CS Windbox

One (1) 10 Gauge CS Air Damper

ZEECO, INC.

Performance Summary Ultra Low NOx Emissions:

NOx (Gas Fired) Range (Natural Draft): 20 to 49 ppmv

Heat Release Range: Nat. Draft: 1 to 20 MM Btu/hr [0.293 to 5.860 MW] F.D.: 1 to 75 MM Btu/hr [0.293 to 21.98 MW]

Turndown: 10:1 or greater for most cases

Design Excess Air Range:10% to 25% for most cases

Combustion Air Pressure Drop: Natural Draft: 0.2” to 1” (5 to 25 mm) H2O Forced Draft: 0.5” to 10” (12.7 to 254 mm) H2O

ZEECO, INC.

Ultra-Low NOx Emissions

Utilizes non-symmetrical

design in order to use

internal flue gas

recirculation, staged fuel,

and staged air. NOx

reduction methods reduce

the flame temperature

resulting in lower NOx

emissions.

ZEECO, INC.

Compact Design and Flame Shape Since the burner is small and only

has one tip, the gas fired from one

burner is farther away from

adjacent burners when compared

to conventional staged fuel

burners with tips around the

periphery of the burner tile. This

significantly reduces the

probability of a flame cloud.

ZEECO, INC.

Example Single Jet Burner

Fuel Gas: 57% Natural Gas

29% Hydrogen

14% Propane

Heat Release: 9.92 MMBTU/HR

% O2: 3.0 PPMV

NOx: 19.1 PPMV

CO: 0 PPMV

Fuel Gas: 57% Natural Gas

29% Hydrogen

14% Propane

Heat Release: 7.63 MMBTU/HR

% O2: 3.0 PPMV

NOx: 21.1 PPMV

CO: 0 PPMV

ZEECO, INC.

Precise Air Control with Bearings & Gears

For combustion to work

properly, the correct amount of

combustion air must be supplied

to each burner. Therefore, it is

recommended to use calibrated

opposed blade dampers

connected together with gears.

For smooth precise movement,

the damper shafts are

supported by bearings.

ZEECO, INC.