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简述燃煤发电厂锅炉燃烧系统的流程?

答案

参考答案:

燃煤电厂的煤由皮带机输送到煤仓间的煤斗内,煤斗的煤经给煤机进入磨煤机磨成煤粉,煤粉由经空气预热器加热的热风携带进入炉内燃烧。燃烧生成的烟气经除尘后由引风机抽出,最后经烟囱排入大气。锅炉排出的炉渣经破碎后,连同除尘器下部的细灰一起,由灰渣泵打至储灰场。

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  Yao Ming was born in 1980. In his last season with the Shanghai Sharks,he scored 32.4 points per game. The big man from China helped the Houston Rockets in the NBA and retired in July 2011. He is the son of two great basketball players and learnt how to play basketball when he was young. As one of the stars in the NBA,he worked hard to make his dream come true and show the world that Chinese basketball player love this game too!
 

  Pele is a football player that everyone knows. He was born in Brazil in 1940.He started playing for Santos when he was only 16 and he didn’t retire until 1977.He played for Brazil 111 times and he scored 97 international goals. Pele came from a poor family. He started playing football in the street,like many people around the world do. He was soon picked to play for Santos and quickly became an international figure.
 

  Steffi Graf was born in Germany in 1969.She won the tennis semi­final at Wimbledon in 1985 when she was only 16,but she lost the final to another great tennis player,Martina Navratilova. People were surprised by the strength and power of her game. She soon became a famous tennis player and she has won most of the main matches several times.
小题1:In the passage,        is the youngest player.
A.PeleB.Yao Ming
C.Steffi GrafD.Martina Navratilova
小题2:        comes from. Brazil
A.PeleB.Yao Ming C.Steffi GrafD.No one
小题3:Which of the following is RIGHT?
A.Yao Ming is a table tennis player.
B.Yao Ming is playing for the Chinese Football Team.
C.Yao Ming’s parents are not basketball players.
D.Yao Ming isn’t in the Houston Rockets now.
小题4:From the passage,we know that         .
A.Martina Navratilova was also a tennis player
B.Steffi Graf was born in Wimbledon in 1985
C.Steffi Graf won the tennis final when she was only 16
D.Steffi Graf has won few of the main matches since 1985