Urgent! The filter element is blocked by tar at the bottom of the coking tower due to delayed coking – how to clean it?
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Please have an expert analyze this: At the bottom of the delayed coking unit, the tar is sticky and it blocks the microporous filters made of sintered metal. How can it be cleaned? I checked – the ignition point of coal tar is 650 degrees, while that of petroleum coke is above 850 degrees; so it can’t be burned in a muffle furnace, right? Can it be cleaned by soaking in acetone or petroleum ether?
What type of filter element does the poster have – one made from powdered materials or from sintered felt? If it’s a powdered material, it’s necessary to maintain a high temperature during filtration; otherwise, tar will clog the tiny pores. Sintered felt has a certain capacity to hold dirt, so it might be worth trying. However, based on the owner’s description, the micropores have already been blocked, which makes cleaning very difficult. Common cleaning methods involve the use of ultrasound, molten salts, and alkaline solutions, all aimed at removing substances from the surface. The owner might want to get in touch with Nanjing Xiongkai Filtration Equipment Co., Ltd. to see what they can do