The SELEE® LIG Ultra Series gas preheat lid is an dvanced, fully automatic gas-fired filter preheat system. IG Ultra will provide consistent, safe, and reliable reheating of SELEE® CS-X™filters with the Safeseal®xpandable gasket and filter bowls. It is available for onoplex, duplex or triplex filter bowls in both single- and ual-stage configurations. These systems can be custom ngineered to meet specific cast house site requirements.
LIG Ultra - Filter Preheat System and Stand
The LIG Ultra fully automatic preheat system is push button operated and incorporates PLC control to provide easily adjustable temperature and integration with Cast House SCADA systems, producing the optimum preheat for the filter and filter bowl. The burner system forces hot combustion gas evenly throughout the entire volume of filter material, consistently heating the filter internally to the proper filter operating temperature as well as expanding the Safeseal gasket material and the filter bowl refractory.
A main control panel contains the PLC with Ethernet connectivity, touch screen operator interface and display, over temp controller, flame safety monitor and operator controls for burner off/on and for raising and lowering the lid. The use of a PLC allows adjustable preheat set points and holding time. Warning lights and audible alarms during lid raising and lowering are available depending on customer site safety requirements.
SELEE® LIG Ultra Series preheat lid systems have the
following features and advantages:
• Automatic filter system startup - less human error/improved safety/increased productivity
• Selectable programs for filter pre-heat or refractory dry out
• Burner status display, including fault diagnostics
• Ethernet connectivity for SCADA data collection, remote access, and use of startup permissives
• Excess air burner with gas and air modulation control
• Digital temperature control and over temperature protection
• Rapid and uniform filter preheat via convective heat transfer
• Programmable multiple set point temperatures
• Wide burner turndown range
LIG Ultra – Control Panel
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SELEE® LIG Ultra Series Filter Preheat System Details |
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Lid Shell Construction |
Welded steel plate coated with heat resistant aluminum paint. |
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Lid Insulation Package |
Non-RCF fiber modules, 12 lb/ft3 [192 kg/m3 ] density, 9” [175 mm] thick. |
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Lid Actuator |
Electromechanical screw jack with internal integral limit switches and brake. |
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Lid Support Stand |
Independent of filter bowl. |
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Control System |
Allen-Bradley CompactLogix with Ethernet connectivity is standard. |
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Burner System Components/Burner |
Eclipse burner tuned to run with excess air (non-stoichiometric) for effective heating of single and dual staged CFF bowls: Monoplex Bowl: 1,000,000 BTU/Hour [293 kW] at gas-air stoichiometry operates at 290,000 BTU/Hour [85 kW]. Duplex Bowl: 2,000,000 BTU/Hour [586 kW] at gas-air stoichiometry operates at 500,000 BTU/Hour [146 kW]. |
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Output Temperature Range |
600°F to 1562°F [316C to 850C] (typical) |
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Flame Safety Standard |
NFPA (National Fire Protection Association) |
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Flame Safety Control System |
Siemens LME7 |
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Natural Gas Requirements(propane available) |
Gas Pressure: 2 psi [0.14 Bar] Gas Flow Rates Monoplex: 300 cfh [140 LPM] Duplex: 790 cfh [370 LPM] |
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Electricity: |
30 amps at 120 Volts, 50/60 Hz [20 amps @ 240 Volts, 50/60 Hz] |
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Required Filter Preheat Time: |
Single Stage System: 15 - 20 minutes Two-Stage Systems: 20 - 25 minutes |
The LIG Ultra Series gas pre-heat lid includes the following services:
1.Engineering site survey
2.Proposal drawing with quotation
3.On-site installation supervisor
4.On-site operator and maintenance training
5.On-site startup assistance
6.Technical manual and electrical documentation
