PETCOKE SYSTEMS
Weyerhaeuser - Valliant OK / Petroleum Coke Delivery System
Matrix was a total system provider for a Petcoke Delivery System at Weyerhaeuser in Valliant, OK. The system allowed the mill to substitute up to 80% ground petroleum coke for natural gas on their lime kiln burner. The system consisted of a 180 ton storage silo and a variable feed system specifically designed for the discharge of ground petroleum coke. A variable rate blower was employed to precisely meet the air flow requirements of the KFS burner. An existing AB Control Logix PLC was used to control the system. Matrix provided an I/O control panel in conjunction with our system. Due to soil conditions, the silo foundation was of drilled pier piling design. Matrix provided all of the civil/structural and mechanical engineering for the project.
Weyerhaeuser - Pine Hill AL / Petroleum Coke Delivery System
Matrix was a total system provider for a Petcoke Delivery System at Weyerhaeuser in Pine Hill, Alabama. The system allowed the mill to substitute up to 80% ground petroleum coke for natural gas on their lime kiln burner. The system consisted of a 180 ton storage silo and a variable feed system specifically designed for the discharge of ground petroleum coke. A variable rate blower was employed to precisely meet the air flow requirements of the KFS burner. All control and display was accomplished with the mill’s existing DCS system. Matrix provided all of the civil/structural, mechanical engineering, and electrical engineering for the project.
Smurfit-Stone Containerboard Mill - Hodge LA / Dual Discharge Petroleum Coke Delivery System (Single Silo Feeding Dual Kilns)
Matrix provided the complete engineering package for a dual discharge petcoke delivery system for Smurfit Stone Containerboard Mill Division in Hodge, LA. This was a system designed to feed two lime kiln burners from a common 180 ton silo. A dual discharge hopper bottom was specifically designed for two petroleum coke feeders. Dual pneumatic convey systems with variable rate blowers deliver petcoke to the Coen burners per their specific air flow requirements. The convey distance of the petcoke was in excess of 600 ft. The control of the Matrix system was integrated into Smurfit’s existing DCS. The silo foundation was of driven H-Pile design. Matrix provided all of the civil/structural, mechanical engineering, and electrical engineering for the project.
Georgia Pacific - Port Hudson, LA
Georgia Pacific contacted Matrix while experiencing problems during start-up of their on-site grinding facility. Matrix was called in to consult on an existing coke feed system that was experiencing problems. We were quickly able to diagnose the problem as too much conveying air flow for the delivery silo dust collector filter area. We quickly engineered a new 4” line, provided and expedited a positive displacement blower to replace a centrifugal fan and conveyed the same petcoke rate with 1/5 the air. This completely eliminated the problem.
Weyerhaeuser - Campti, LA Petroleum Coke Delivery System
Matrix provided the consultation and engineering necessary to upgrade an existing petcoke feed and convey system. Matrix employed its new 3rd generation design to double the feed rate of the petcoke. The existing silo was re-used and retrofitted with the Matrix feed system. We also replaced the existing convey system and instrumentation for delivering the petcoke to the burner nozzle.
PeTroCoke, Inc. Owensboro, KY Grinding Plant Upgrade
Matrix Engineering provided a complete electrical system upgrade and the modernization and controls automation of PeTroCoke, Inc.’s Owensboro Kentucky plant. The entire electrical system was replaced from the main service disconnect to all of the equipment and instrumentation. The new control system consisted of an Allen Bradley PLC and RSView32 computer operator interface. The system controlled a mill feed system, a hammer mill, and gas-fired burner system for drying the coke. We also continuously monitor the finished product silo with ultrasonic instrumentation and controlled a bulk truck load-out system. We were present for complete check-out and start-up and were able to minimize down time without affecting delivery of the sold-out product. Due to automatic control of product feed and burner temperature the plant throughput was improved dramatically.
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Projects 
