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Invisible keywords: Sun Combustion, Combustion, Industrial, Industrial |
Combustion SUN COMBUSTION, INC. "INNOVATIVE COMBUSTION TECHNOLOGY"
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SP & SPX SERIES BURNER
SP & SPX SERIES BURNERS
The
SP and SPX 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 SP and SPX Series
Burners satisfy all of these requirements by incorporating many unique features
into their design.
MULTI-FUEL DESIGN
The SP and SPX 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.
IN SITU INCINERATION DESIGN
The
SP and SPX Series Burners
can be designed for use as an IN SITU INCINERATION SYSTEM system and have been utilized
in such applications to incinerate egg waste, hazardous chemicals, hazardous waste,
etc.
MODULAR DESIGN
The
SP and SPX 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, furnaces,
kilns, smelters, incinerators, etc.
The SPX Series
Burners can be applied to multi-burner applications and vertical up or vertical
down firing applications.
The SP and SPX 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, SP and SPX Series
Burners may be updated or have new features added at a later time without the necessity
of replacing the existing SP or SPX burner unit and installation of the additional
features is easy to perform because all of the components utilized in the manufacture
of the SP and SPX Series
Burners are designed to interface and work together.
PERFORMANCE
Due to their unique design features, the SP and SPX 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 and have been applied to systems that operate at 250 PSI+ furnace pressure.
COMBUSTION AIR DELIVERY - SP Burner The SP Series Burners incorporate a combustion air fan that is an integral part of the burner housing. A high-efficiency T.E.F.C. motor mounted directly to the burner / fan housing, thus eliminating sheaves, belts, etc, powers the combustion air fan. A vortex type inlet damper provides close combustion airflow control into the inlet of the combustion air fan. Air, exiting the discharge section of the combustion air fan, enters the burner housing through fixed air distributing vanes insuring even distribution of the combustion air into the burner air tube. An adjustable air sleeve, manual or automatic operation, allows trimming of the combustion air flow into the burner air tube 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.
COMBUSTION AIR DELIVERY - SPX Burner The SPX Series Burners incorporate a combustion air fan that is mounted externally of the burner housing. This feature is utilized on multiple burner systems or where various combustion air discharge pressures are encountered and required for the application. A characterizing type linear combustion airflow control valve provides close combustion airflow control into the burner housing. Combustion air enters the burner housing through fixed air distributing vanes insuring even distribution of the combustion air into the burner air tube.
An
adjustable air sleeve, manual or automatic operation, allows trimming of the combustion
air flow into the burner air tube 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
SP and SPX 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
SP and SPX 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 SP and
SPX 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 system.
GAS BURNER SECTION
The gas burner section of all SP and SPX 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 SP and SPX 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.
The SPX Series
Burner may be supplied with a low-pressure atomizing system.
This design provides for applications where no compressed air is available
such as portable asphalt plants or where a low-pressure atomizing system already
exists.
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.
As the cam moves, tension on the spring changes thus allowing the stem to move up
or down. Adjusting screws are located
on the cam, thus providing a method to profile the flow characteristic of the valve.
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 SP and
SPX 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 SP and SPX 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 SP & SPX Series Burners. This solid fuel burner section is designed for utilizing two (2) solid fuels such as: Anthracite and Bituminous Coals, Bituminous Coal and Petroleum Coke, Waste Solids and Sawdust, etc. firing independently or simultaneously.
LOW BTU / WASTE GAS BURNER SECTION
The Low BTU / Waste gas burner section of all SP and
SPX 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.
ADDITIONAL WASTE LIQUID BURNER SECTION
An
additional Waste Liquid Burner Section can be installed in lieu of the Low BTU /
Waste Gas Section on all SP and SPX Series
Burners.
This feature enables the firing of an additional waste liquid for those applications
where this capability is desirable.
The operation of this feature is the same as outlined in the Liquid Fuel
Sections described previously.
COMBUSTION TILE
The SP and SPX Series Burners utilize a unique combustion tile. Its design enables the burners to achieve extremely stable combustion while at extremely 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 SP and SPX Series Burner is then bolted to this tile holder / mounting bracket thus insuring accurate burner to tile alignment and proper sealing.
SPX QUAD FUEL BURNER PRESENTATION
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