问题 问答题 简答题

循环流化床锅炉水冷布风板漏渣应如何处理?

答案

参考答案:

在正常过程中,操作人员应注意一次流化风量不能小于其最小值(在实际运行中得出)。停炉检修时应仔细检查所有风帽的风向角度、磨损情况,并及时调整或更换,保证风帽的完好,尤其在布风板靠近水冷壁管的边缘区域。尽量保持J阀回料器正常回料,不要间断回料,以防在回料口处形成床料堆积。适当提高流化风量或在每个风帽出口增加节流圈,增加布风板阻力进而增大风帽出口流速,但这样有可能增加了受热面的磨损程度。在条件允许情况下,改变回料器出门的结构形式,例如可以在回料口与炉膛接壤的区域适当加装一些返料风,使回料尽可能均匀地撒在床料上,从而使回料进入炉膛时不会对局部床面造成大的冲击。

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     The trip to that city was eye opening for everyone,and near its end,all the young people
in our group began to reflect on what it had meant.We   1   the first night we had arrived.
We had all gone into the markets of the city   2   the young people could experience its
energy.But what we actually saw simply   3  us all-the rundown houses,the children in rags,
the people begging for money...Walking home,  4   under a low bridge,we came across   5  
families of homeless people seeking a bit of dry ground to sleep on   6   the night.We had to
step over bodies as we found our way through the darkness.
     The poverty (贫困) was  7   than anything my young companions had ever imagined.Back
in the hotel,an air of sadness settled over the group.Many  8   and cried.Spending time in this
  9   moves a person to care about humanity.
     That evening,our group spent hours talking about what we had   10  .Gently,I encouraged
everyone to talk about the difficult   11   that day's discoveries had inspired. Sitting together
   12   a circle as everyone had a chance to speak,we all began to realize that   13   of us was
alone in our struggle to cope with our reactions.
     Based on my   14   in poverty stricken areas,I suggested that   15   the emotions we had
were painful,they could also be important in helping us to move forward.We all   16   that we
had seen things that should never be allowed to happen.  17  ,what could we do about it?
Together,we began to brainstorm ways we could help to ease the   18   we had seen.As I
encouraged group members to focus on   19   they could do,a sense of determination   20  
the previous sadness.Instead of despair,these young people began to feel a call to action.

( )1.A.put up with
( )2.A.now that  
( )3.A.puzzled  
( )4.A.marching  
( )5.A.entire    
( )6.A.beyond    
( )7.A.stronger  
( )8.A.gave up  
( )9.A.environment
( )10.A.inspected
( )11.A.feelings
( )12.A.along    
( )13.A.neither  
( )14.A.experiences
( )15.A.once    
( )16.A.supposed
( )17.A.Surely  
( )18.A.burden  
( )19.A.how      
( )20.A.replaced  
B.got back to
B.so that    
B.annoyed    
B.running    
B.normal    
B.with      
B.deeper    
B.broke down
B.hotel      
B.attempted  
B.decisions  
B.around    
B.either    
B.schedules  
B.while      
B.advised    
B.Rather    
B.suffering  
B.where      
B.changed    
C.looked back on
C.as if        
C.embarrassed  
C.passing      
C.average      
C.till        
C.worse        
C.set off     
C.house        
C.witnessed    
C.thoughts    
C.by          
C.none        
C.data        
C.since        
C.confirmed    
C.Now          
C.anxiety      
C.what        
C.covered      
D.made up for  
D.even if      
D.shocked      
D.moving      
D.general      
D.for          
D.less        
D.held on      
D.background  
D.challenged  
D.impressions  
D.in          
D.each        
D.position    
D.unless      
D.agreed      
D.Indeed      
D.difficulty  
D.when        
D.improved