问题 问答题 简答题

再生旋风分离器的作用,翼阀的作用是什么?

答案

参考答案:

再生器内旋风分离器的作用是回收烟气中的催化剂细粉,气体离开密相床层进入稀相段时必须携带出部分催化剂,因为气体线速大于某些细粉的终端速度,且由密相床层中上升的气泡在界面处破裂时将一些较大的催化剂颗粒带入稀相段,一部分被携带出床层的催化剂沉降下不来,翼阀的作用是为了保证料腿有一定的料位高度,保证二级旋风效率,又防止烟气倒窜。

单项选择题
单项选择题

The International Whaling Commission’s (IWC) decision to retain its ban on whaling does not mean that the killings will stop. Quite the (1) .

Save the Whale. It’s a phrase which became annoying with (2) , an unfavorable shorthand for liberal consciences. How appalling, then, that in the year 2010, it should be pressed (3) service again, to fight the whaling nations: Norway and Iceland, who exempted themselves from the 1986 prohibition (4) by the IWC, and Japan, which hunts whales under cover of " (5) research".

I am completely (6) by this week’s events in Morocco, where talks broke down. In my heart, I agree with those who have (7) the news that this year’s negotiations of the IWC have broken up, and (8) the prohibition would not be lifted (as the US proposed in a desperate (9) to break the deadlock). Yet reason (10) something else. If we do not (11) some kind of new control, the (12) will be able to go on with their slaughter (13) . Membership of the IWC is (14) , and the ban was only ever intended to be (15) . Japan, which has been buying the votes of nations with no interest in whaling (only in the 16 Japan offers in turn), will continue to press its case, having invested millions of dollars in its (17) . Geoffrey Palmer, New Zealand’s Commissioner at the IWC, has proposed a year-long (18) period. In the meantime, more whales will die.

We stand at a crossroad for whales. We see the (19) existence of these animals as an indicator of ecological threat. As symbols of an endangered world, they evoke, and provoke, a feeling that they have the same qualities as human on a scale equal to their size and supposed (20) . To some this is so much sentimental words in the New Age.

2()

A.overuse

B.concern

C.attention

D.stress