[Weekly Image] Catalytic Coking Reformate Blending Version (Sixth Image of April 2017)

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To boost the popularity of the catalytic coking reformed oil blending version and add some vitality and color to it, events have been organized for this version. Reward for this question: 4 Wealth for participation, 15 Wealth for a correct answer. This is a bit tricky, hehe~:lol Guess: The picture shows the interior of an energy-saving device used to recover gases from an oil refinery that is under construction. What is it called? Answer: Gas holder ========================= Petrochemical area – “Creative Ideas for Energy Savings” event (sponsors sought; highest returns ever available). http://bbs.hcbbs.com/thread-1666758-1-1.html Sponsors are being sought for this event; those interested can contact the event organizer. Petrochemical processing section – An event to share pictures of chemical equipment has started! A vast amount of wealth, as well as HCH coins, are waiting for you to claim them: http://bbs.hcbbs.com/thread-1760733-1-1.html. Notice regarding the collection of chemical engineering technical materials in the \"Petroleum and Chemicals Section\": http://bbs.hcbbs.com/thread-1614796-1-1.html