问题 问答题 简答题

产生淹塔的原因,如何处理?

答案

参考答案:

原因:

<1>塔底温度高,塔内上升气量过大。

<2>进料量或回流量过大,塔超负荷。

处理:

<1>减少或停止进料,降低塔温,、停止塔顶采出,进行全回流操作,使带到塔顶的重组分降至塔底。

<2>当生产不允许停止进料时,可降低底温,加大塔顶采出,改入不合格罐,再调整操作,直至恢复正常。

<3>如因进料过大或回流量过大引起塔超负荷时,可先适当降低进料或回流量,然后再进行调整。

阅读理解


Affordable Boutique Hotels in New York City
By STEPHEN HEYMAN    June 20, 2010
A new breed of hotels is trying to stand out from the masses with designer details, memorable allowances and prices around $250 a night.
Welcome to Boutique Hotel.

To Get Those Summer Tickets in New York, Strategize
By FELICIA R. LEE        May 28, 2010
“The Merchant of Venice” is on show. Tickets can now be requested online, Most New Yorkers know the drill: on the day of the show, line up outside the Theater in Central Park several hours before 1 p.m., when free tickets start being handed out.

Climbing the Walls in Brooklyn
By LOUISE STORY         May 28, 2010
Since opening last fall, Brooklyn Boulders, an 18,000-square-foot gym, has become a destination for New York rock climbers of all levels.

Hotel Review: Ace Hotel, New York
By FRED A. BERNSTEIN    September 27, 2009
The owners are hoping that guests will enjoy the spacious accommodations, but that depends on whether they find the hotel’s oddities off-putting or endearing.

Tent City: A Child’s Urban Adventure
By ERIC KONIGSBERG     July 24, 2009
One of the better-kept secrets of the city is the series of one-night family campouts that the Parks & Recreation Department has every summer weekend.
小题1:If you want to stay in a hotel in New York City for a week and enjoy designer details, memorable allowances, you need to get prepared for at least____________.
A.$ 1550B.$ 1650C.$ 1750D.$ 1850
小题2:___________ is a good destination for New York rock climbers of all levels.
A.the Parks & Recreation DepartmentB.Brooklyn Boulders
C.Lower ManhattanD.Tent City
小题3:Suppose you are interested in Shakespeare’s plays, you may pay attention to more details written by _________.
A. ERIC KONIGSBERG                    B. LOUISE STORY   
C. FRED A. BERNSTEIN                  D. FELICIA R. LEE
单项选择题 A2型题