 |
Invisible keywords: Sun Combustion, Combustion, Industrial, Industrial |
Combustion SUN COMBUSTION, INC. "INNOVATIVE COMBUSTION TECHNOLOGY"
|
|
|
|
|
SR SERIES BURNERS
SR SERIES BURNERS The
SR Series Burners were developed by Sun Combustion, Inc. to fulfill the
present and future requirements of heavy industry to: reduce fuel and energy
usage, minimize exhaust emissions impact on air quality, increase thermal
process operating efficiencies, provide a cost effective method for lowering
plant operating expenses, and to utilize available conventional and
unconventional fuel supplies.
The SR Series
Burners satisfy all of these requirements by incorporating many unique features
into their design. MULTI-FUEL
DESIGN The SR Series Burners are multi-fuel, conventional and unconventional (waste) gaseous, liquid or solid fuels, firing capable, and can be designed for firing up to four (4) fuels individually or simultaneously and in any combination thereof. MODULAR
DESIGN The
SR Series Burners are of a modular design thus allowing them to be custom
built and tailored for a particular fuel or application including: boilers,
ovens, dryers, heaters, incinerators, etc.
The SR Series Burners can be tailored readily to any application;
short or long flame / wide or narrow flame, just by making simple adjustments in
the field to the various adjustable features incorporated into their design.
In addition, SR Series Burners may be updated or have new features
added at a later time without the necessity of replacing the existing SR burner
unit and installation of the additional features is easy to perform because all
of the components utilized in the manufacture of the SR Series Burners are
designed to interface and work together. PERFORMANCE Due
to their unique design features, the SR Series Burners can sustain stable and
clean combustion at extremely low or very high excess combustion air levels,
provide burner firing rate-turndown-ratios exceeding 20:1, provide for proper
combustion air / fuel mixing at all firing rates, and provide excellent flame
stability at all firing rates within the burners designed operating range.
The burners may be applied to high-negative draft or high-positive draft
applications. COMBUSTION AIR DELIVERY The
SR Series Burners incorporate a combustion air fan that is external of the
burner register assembly and is mounted on a wind box housing. A high-efficiency T.E.F.C. motor mounted directly to the fan housing powers the combustion air
fan.
A vortex type inlet damper provides close combustion airflow control into
the inlet of the combustion air fan.
Combustion Air, exiting the discharge section of the combustion air fan, enters the
wind box housing through fixed air distributing vanes insuring even distribution
of the combustion air into the burner register assembly.
Adjustable air louvers, manual or automatic operation, allows trimming of
the combustion air flow into the burner register assembly for varying furnace
conditions; furnace pressure, draft, excess air, etc. An
adjustable, high-alloy stainless steel, combustion air diffuser provides
accurate combustion air direction into the atomized liquid fuel, gaseous fuel or
solid fuel stream thus
enhancing fuel and combustion air mixing. Adjustable
secondary air spin vanes, manual or automatic operation, provide burner flame
shaping capabilities in the field without trial and error modifying or replacing
diffusers, discharge housing, etc.
In addition, this feature allows the flame to be tailored to the
combustion chamber design, thus providing maximum heat transfer without flame
impingement on the furnace floor, walls, etc. Due
to these unique design features, the SR Series Burners can sustain stable and
clean combustion at very low or extremely high excess air levels, provide burner
firing rate-turndown ratios exceeding 20:1 and provide for proper combustion
air / fuel mixing at all firing rates.
GAS PILOT SYSTEM - Standard A
gas / electric pilot system comes standard with all SR Series Burners. The
pilot systems design insures trouble free main flame light-off and stable
operation even at high excess combustion airflow rates. The
gas / electric pilot system is basically composed of an ignition electrode with
insulators which generates an arc between it and an adjacent ground, a pilot gas
/ air mixer for proportioning gas / air, a tube through which the gas / air
mixture is directed towards the nozzle and a pilot nozzle which directs the gas
/ air mixture to the point of the electric arc and assists in retaining the
pilot flame. A charge from a high-voltage, solid-state ignition transformer is routed to the ignition electrode causing an intense arc to ground. The electrode is then immersed in a concentration of gas / air mixture as the automatic pilot solenoid valve opens allowing gas to flow to the pilot gas / air mixer then to the pilot nozzle. The intense arc ignites the gas / air mixture and approximately five (5) seconds after the UV flame detector senses the flame, the electrical discharge from the ignition transformer terminates; the pilot then stands ready to ignite the main flame.
LIQUID FUEL PILOT SYSTEM - Optional An
optional liquid fuel / electric pilot system is available for use on all SR
Series Burners.
This pilot system is capable of lighting #2, #4, #5 and #6 fuel oils,
waste oils and waste chemical fuels reliably and requires minimal maintenance.
The electrode / ignition transformer system utilized is identical to the
units used on the gas pilot systems.
GAS
BURNER SECTION The
gas burner section of all SR Series Burners incorporates design features that
allow field replacement of the gas orifices in the gas distribution ring.
This feature allows field adjustment and compensation for varying gas BTU
values, flows and supply pressures without the necessity of re-sizing and
drilling gas orifices. In addition, change over to various gas fuel types;
natural gas to propane, butane, etc. is extremely easy.
Uniform gas distribution is also achieved in the burner gas ring thus
ensuring balanced flame distribution at all firing rates. Excellent
gas and combustion air mixing is obtained due to the location of the gas
orifices in relationship to the burner combustion air discharge; full mixing
occurs even at very low firing rates. GAS
FLOW CONTROL VALVE - Standard The gas flow control valve is a fuel-throttling device that proportions the gaseous fuel in proper ratio to the combustion air. The gas flow control valve body has rectangular inlet and outlet ports. A cylindrical piston with a rectangular port opening is located within the valve body, The cylindrical piston with the rectangular port opening both rotates and reciprocates within the valve body. When the valve lever is moved from the low fire position towards the high position, the rectangular port opening in the valve body is uncovered and gas flow increases. The height of the cylindrical piston with the rectangular port opening is adjustable. A cam spring affects the position of a rocker arm, which in turn controls the height of the cylindrical piston with the rectangular port opening. The cam spring can be adjusted at ten (10) or more independent points (the number of points is dependent on valve size) by adjusting screws located under the valve position dial. Extreme flexibility of gas flow characteristics is provided by the
shape of cylindrical piston port, which can be varied at time of manufacture,
and by the adjusting screws that can be set for either uniform or varying increments of
change in gas flow capacity. LIQUID
FUEL BURNER SECTION All
liquid fuel and atomizing media supply hoses are stainless steel braided.
Stainless steel double shut-off-type quick disconnects are supplied on
the liquid fuel connection and stainless steel straight-thru-type quick
disconnects are supplied on the atomizing media connection. LIQUID FUEL ATOMIZER Various
types of liquid atomizing nozzles may be utilized with the SR Series Burners.
Selection depends on the application, liquid to be atomized, degree of
atomization required, etc.
In addition, construction materials vary depending on material to be
atomized.
In all cases, atomization of the liquid fuel is complete and performance
is always assured, even at very low firing rates. LIQUID FUEL FLOW CONTROL
VALVE - Standard The liquid fuel flow control valve is a fuel-throttling device that proportions the liquid fuel in proper ratio to the combustion air. The valve consists of a stem with a "V" slot cut into it that is designed to move up and down in a valve seat located within the valve body. As the stem moves up and down, the "V" slotted area is exposed to the liquid fuel inlet portion of the valve body. The higher the stem rises, the more area of the "V" slot is exposed to the liquid fuel inlet portion of the valve body, thus changing the flow of liquid fuel to the outlet portion of the valve body. The "V" slotted stem is spring-loaded and is connected directly to a cam / roller assembly located on top of the valve body. The cam rides on the roller assembly thus maintaining tension on the "V" slotted stem spring. Extreme flexibility of
liquid fuel flow characteristics is provided by the shape of the
"V" slot, which can be varied at time of manufacture, and by the
adjusting screws that can be set for either uniform or varying increments of
change in liquid fuel flow capacity. LIQUID ATOMIZING MEDIA
CONTROL VALVE - Standard A
differential pressure-type-regulating valve is used on all SR Series Burners.
The regulating valve is closely matched to the operating characteristics
of the particular liquid fuel atomizing nozzle and liquid fuel flow control
valve supplied with the burner.
The regulating valve receives an input signal from the liquid fuel supply
line via a sensing line located near the liquid fuel atomizing gun assembly.
This signal acts upon a diaphragm that has a spring-loaded preset.
As the liquid fuel pressure signal varies to this diaphragm, the
regulator will vary the atomizing media delivered to the liquid fuel atomizer
thus maintaining the spring-loaded preset pressure at various firing rates. The
regulating valve incorporates a double diaphragm to ensure no liquid fuel will
enter into the atomizing media side of the regulator in the event of a diaphragm
rupture.
All regulators are cast iron with stainless steel trim and diaphragms for
long life and low maintenance. SOLID
FUEL BURNER SECTION The
solid fuel section of all SR Series Burners incorporates design features that
allow different types of solid fuels to be burned with high combustion
efficiency.
Excellent solid fuel and combustion air mixing is achieved, even at very
low firing rates, due to the unique design of the solid fuel burner section.
The solid fuel burner sections design provides for even distribution
of the solid fuel particles within the primary air conveying stream and
incorporates a unique adjustable flame shaping device that allows the solid fuel
flame to be tailored to the combustion chamber. DUAL SOLID FUEL BURNER SECTION- OPTIONAL
A dual solid fuel burner section is available
as an option on all models and sizes of SR Series
LOW
BTU / WASTE GAS BURNER SECTION The
Low BTU / Waste gas burner section of all SR Series Burners incorporates
design features that allow field replacement of the gas orifices in the gas
distribution ring.
This feature allows field adjustment and compensation for varying gas BTU
values, flows and supply pressures without the necessity of re-sizing and
drilling gas orifices.
In addition, change over to various gas fuel types; sewer gas, coke oven
gas, landfill gas, waste gas, etc. is extremely easy.
Uniform gas distribution is also achieved in the burner gas ring thus
ensuring balanced flame distribution at all firing rates. Excellent
gas and combustion air mixing is obtained due to the location of the gas
orifices in relationship to the burner combustion air discharge; full mixing
occurs even at extremely low firing rates. COMBUSTION
TILE The
SR Series Burners utilize a unique combustion tile.
Its design enables the burners to achieve extremely stable combustion
while at very low firing rates.
A firing turndown ratio of 20:1 is normally obtainable on either liquid
or gaseous fuels.
The combustion tile promotes recirculation of the hot combustion gases
back into the new fuel / air mixture exiting the burner ensuring rapid ignition
and full burning at all firing rates.
The combustion tile is constructed of high-density / high-alumina
refractory with stainless steel needles added to insure strength and long life.
The tile is cast as one piece into a stainless steel combination holder
and mounting bracket.
The SR Series Burner is then bolted to this tile holder / mounting
bracket thus insuring accurate burner to tile alignment and proper sealing.
|
|
|
