【Picture of the Day】2016 05 25 What is the device in this picture?

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http://down3.hcbbs.com/forum/201512/16/152655chnjrdzh8skjznhz.jpg 【Picture of the Day】2016 05 25 What is the device in this picture? Does anyone know? Worn-out nozzles at the bottom of the lift pipes. Promotion of petrochemical activities: Notice regarding the large-scale event “I’m saving energy – where are you?” in the petrochemical area: http://bbs.hcbbs.com/thread-1579199-1-1.html. This event offers awards in both text and image categories. When there are over 200 entries, an additional grand prize will be awarded; the value of this prize is 600 Haichuan coins. If there are more than 300 entries, the grand prize value increases to 1,000 Haichuan coins, and if there are 500 entries, it rises to 1,500 Haichuan coins. First prize: 3 Haichuan commemorative water cups. Second prize: 5 winners, each receiving 120 Haichuan coins. Honorable mentions: several winners, each receiving 200 Haichuan coins. 1. Posts with prizes for categorized submissions: http://bbs.hcbbs.com/thread-1568416-1-1.html (Source: Haichuan Chemical Industry Forum). 2. [Petrochemical Weekly] Issue No. 9, dated 2016-3-12 (Summary of recent petrochemical activities): http://bbs.hcbbs.com/thread-1568615-1-1.html (Source: Haichuan Chemical Industry Forum). 3. “Haichuan Gratitude Season” – Summary of events in the Petrochemical Section: http://bbs.hcbbs.com/thread-1533218-1-1.html (Source: Haichuan Chemical Industry Forum). 4. Summary of professional “basic knowledge” posts in the Petrochemical Section (Supported by the main forum; amazing prizes await you): http://bbs.hcbbs.com/thread-1557057-1-1.html (Source: Haichuan Chemical Industry Forum)