【Daily Question No. 042】2017.02.11

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This post was last edited by 955559 on 2017-7-31 at 16:24. [Daily Question No. 042] On 2017.02.11, it is necessary to adhere to (　) before using steam; the steam should be introduced slowly, following the principle of starting with a low flow rate and increasing it gradually, in order to prevent water hammer. 　　A. Introduce steam first, then drain condensate B. Drain condensate first, then introduce steam C. Purge D. Replace with nitrogen; answers can be seen after restoration. Points are awarded by identifying the key points. (Unless otherwise specified, all questions and answers are based on hydrogenation units.) ) Petrochemical Area – “Creative Ideas for Energy Saving” event: http://bbs.hcbbs.com/thread-1666758-1-1.html The New Normal Cup – Voting for the top 10 members of HaiChuan in 2016 is now underway; vote for the member you care about the most (please cast your valuable vote for the members in the Petrochemical Area). http://bbs.hcbbs.com/thread-1667649-1-1.html Summary thread of Q&A questions from 2017 (updates ongoing): http://bbs.hcbbs.com/thread-1657793-1-1.html Summary thread of daily questions from 2017 (updates ongoing): http://bbs.hcbbs.com/thread-1657794-1-1.html Summary thread of Q&A questions from 2016 (updates completed): http://bbs.hcbbs.com/thread-1597792-1-1.html Third round of selection for outstanding management members of HaiChuan: http://bbs.hcbbs.com/thread-1655902-1-1.html Petrochemical Area – “Creative Ideas for Energy Saving” event: http://bbs.hcbbs.com/thread-1666758-1-1.html Xiaomi phones are available for grabs. Thread for collecting chemical industry technical materials in the “Petrochemical Section”: http://bbs.hcbbs.com/thread-1654603-1-1.html Many prizes are waiting for you (Source: HaiChuan Chemical Forum)