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| Cracking tube is applied to cracking furnace in ethylene plant of petrochemical industries. Kubota as leading company of cracking tubes provide various new concept products to meet customer needs. |
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MERT is Kubota original new type cracking tube which has mixing effect by mixing element on the centrifugally cast tube inside. The mixing effect can achieve both good heat transfer and homogeneous heating of fluid in tube.
Because of high heat transfer efficiency and homogeneous heating of fluid in tube by MERT, decrease of tube metal temperature and coke generation rate can be achieved. As the result, it is possible to improve the operating efficiency of cracking furnace substantially.
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| Normal MERT |
Slit-MERT(Below) & X-MERT(Upper) |
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Ethylene producers have long been concerned with coke formation in cracking furnaces. More than 10 years in development, ANK 400 can address these concerns. NOVA Chemicals, Canada's largest ethylene producer, developed this proprietary technology using metallurgy from Kubota.
ANK 400 achieves unprecedented longer run lengths by dramatically lowering coke formation. The key to coke reduction is an inert, nanocrystalline spinel surface, which has proven to reduce both catalytic and pyrolytic coking. This novel surface chemistry had increased run lengths by more than 10 times in multiple ethane crackers at NOVA Chemicals.
The benefits of reduced cokemake are many. First and foremost, reduced downtime is directly proportional to additional ethylene production per year. This higher furnace availability can resolve bottleneck, and/or reduce overall maintenance costs.
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| nanocrystalline spinel surface |
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| AFTALLOY is next generation cracking tube having a uniform aluminum oxide film on the inside tube surface. The stable uniformed film has excellent oxidation resistance, carburization resistance and coking resistance. AFTALLOY is an alternative of the conventional materials and the advantage of applying it is expected that tube life, run length, feed flow rate could be improved. |
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