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| Read about current TECO project activity as listed below: |
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| Fiberglass Furnace Projects | |
| Textile fiberglass plant-China Commissioned in 2004 | Fig. #1  |
 Fig. #2 |
Recuperative furnace melting E-Glass at 65 metric tons/day |
| E-Glass batch plant for handling 200 metric tons/day(220 U.S. tons/day) of mixed batch | Fig. #3  |
 Fig. #4 |
One(1) of four(4) forehearths for "E" glass fiber production |
In the summer of 2004, an "E" glass-type fiberglass plant, shown in Fig. #1, was commissioned in China for the purpose of producing 7-10 micron fiberglass. The capacity of the furnace was 65 metric tons per day (72 U.S. tons per day). TECO designed the batch plant, recuperative furnace, channel and forehearths. TECO also provided criteria engineering information for the plant design/construction and for building and process utilities. The batch plant included pneumatic materials handling and mixing, and was designed for the same capacity as the furnace. However, materials handling and control system interfaces were provided to easily accomodate the addition of the second furnace at a later date. The heat-up and commissioning of the project went smoothly and the fiberglass production started within three hours after pulling glass at the bushings. |
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| Lighting Glass Project - USA | |
| Furnace Crown Under Construction |  |
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Rapid Cool Forehearth Under Construction |
The TECO Group recently completed the installation and commissioning of a 200 ton per day Oxy-fuel fired furnace along with the distributor, three (3) forehearths and batch plant modifications for the production of high quality lighting products. This furnace replaced a 165 ton per day electric melter, which was designed and built by TECO in the mid 1970’s. The reason for the change was the increase in capacity requirement as well as better production economics. TECO was the project manager and engineer. Dreicor of Hendersonville, NC was the installation contractor and also provided the fabricated steel and the assembled combustion skids. The new furnace construction consisted of an AZS/alpha-beta alumina crown. The breast walls were AZS in the charging area and the remainder being magnesia alumina spinel. The glass contact refractory was AZS. The furnace was fired by eight (8) Maxon Flat Flame-staged combustion burners. The melter was also equipped with a camera/video system. The furnace “peep hole” covers were the sealed type for preventing air infiltration, thus minimizing NOx. KTG Engineering of the UK manufactured the four (4) sealed screw chargers which charged the oxy-fuel furnace. Also, KTG Engineering manufactured the sealed peep hole covers. The distributor and three (3) forehearths were supplied by ZEDTEC Ltd of the UK. The forehearths were of the Rapid Cool type. ACSI of Toledo, OH supplied the control system for the furnace, distributor and forehearths as well as additional control loops assigned by the client. The batch plant was also upgraded and hardware and software modifications were provided that reduced the time cycle while improving the quality of the mixed batch. |
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| Container Glass Furnace Projects | |
| TECO recuperative furnace. Typically used for soda lime container and continuous strand fiber glass (E-glass) |  |
TECO designed and built a 170 metric ton per day recuperative furnace for the melting of soda lime container glass. The furnace is similar to the photograph above, except twin recuperators were used. The furnace is natural gas fired using a low N0x firing system. The melter incorporates a weir wall and bubbler system. Provisions for an electric boost, at a later date, are included. The melter and distributor are controlled by an ACSI/PLC based control system. |
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| Float Glass Furnace Projects | |
| Float Furnace under Construction |  |
TECO has six float glass furnace projects at this time, one (1) new furnace and six (6) modernization/rebuild projects. Each furnace incorporates the TECO patented SUPERFLUE®, for maximum fuel efficiency while extending the life of the regenerators. |
| Typical Float Glass Plant |  |
TECO has also finished a turnkey float glass facility in the United States, which had it's start-up in the third quarter of 2006. TECO turnkey designed plants are moderate in capital cost while producing high quality product at high pack rates. | |||||||
| The above TECO float glass business activity brings the total to: | |||||||
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| Batch Plant Projects | |
| Batch Plant for TV Glass Applications |  |
TECO has two (2) new batch plant modernizations in process. Two (2) domestic float glass manufacturers are modernizing their batch plants at the time of furnace rebuild. The modernizations are targeted at increasing glass quality (greater pack efficiency), increasing unloading capacity and increasing mixed batch production. The control systems are also being replaced with state-of-the-art PLC based controls with advanced statistical capability. |
| Typical Float Glass Cullet Return System |  |
TECO was commissioned to provide an underline cullet return system for a float glass line, including breakers and choppers under the drop points and end of the line drop. The cullet was automatically returned to one of two cullet pads or to the batch plant. |
| EP Dust Weighing System (scale at 10 lbs by 0.01 lbs) |
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TECO is providing an EP dust recycling system for a domestic float glass manufacturer. The EP dust is automatically returned to the batch plant with an enclosed pneumatic materials handling system. The dust cake is stored at the batch plant in a silo with mass flow bottom. The dust cake is batch weighed and discharged to the mixer with the other batch ingredients. |
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