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  и ؼ 帮ڽϴ.
  ۾ :    ID : com2356     ¥ : 17-03-02 13:33     ȸ : 5191    
ϴٰ ܼ ϴ.

(1) Reflux Ű ؼ ܼ ̸ Ǵ ñմϴ.

(2) Reflux 'reflux drum ׸ -> ž -> Feed ' Ŭ ذ ʽϴ. Drum ׸̶ Ȳ ϴ ƴϸ Ȳ ƴ϶ ϴ ñϰ ̿ ž ϸ feed ϴ ñմϴ.

(3) Reflux µ Ͽ ų ִٰ ϼ̴µ,
    ̸ ؼ refluxǴ liquid ߰ ð ִ ñմϴ.

(4) Stripping gas ϴ  mechanism bottom پ ñմϴ.

(5) ž µ ž Ϻη մϴ. ̿ غٰ ڱ Ǵ ϴ.
ž µ ž ο ? --> ž η 󵵰 ---> ž η 󵵰 ? --> ???? ⼭ ڱ ϴ.
... ܼ Ϸ ϴܿ ֱ ̶ ص Ǵ ΰ?

(6) зµ ž Ϻη մϴ. (5) ϴµ ´ ñմϴ.

(7) ž Ȯϰ ϸ ֹߵ ̶ ˰ ֽϴ. ֹߵ ǥ Ȯ ñմϴ.

(8) 'A Working Guide to Process Equipment' å а ֽϴ. Flooding ִµ, downcomer seal loss flooding Ͼ 찡 ִٰ ֽϴ. ⼭ downcomer seal loss ñմϴ. ߰ δ outlet weir ̰ downcomer clearance ٰ մϴ.

𸣴 л̶ ʹ ֽø ϰڽϴ.

ij Stefano   17-03-06 02:04
A1.  Reflux δٴ Column ȯǴ Ű ̱ ̹ ġ ޷ִ 긦 ִ ַ ˴ϴ.  ѹ ġ ̰ ̰ .

A2. Reflux ̰ Ǹ ž ο 帧 þ ׿ Reboiler ߽ µǴ Ⱑ þ Column ü þ ϰ ˴ϴ.  ʹ ϰ Ǹ FeedǴ ۿ µ ̸ Դϴ.  Reflux Drum ׸ Reflux ޸ Distillate ⷮ ν DZ Reflux õ ƴմϴ.  Reflux ڱ ÿ Drum Level Distillate 갡 Ͽ ׸ ݴϴ.    Reflux ÿ ó Ҹ Դϴ.

A3. Condenser ä ִ · Ǵ µ µ ð ִµ 쿡 شϴ Դϴ.  ̷ Condenser Flooded · ȴٰ ϴµ ׷ Subcooling ϱⰡ .

A4. Stripping Gas ʱ о ߾ ִ ȿ ϴ. ׷ Ͽ ׻󿡼 Ͼ, Bottom ǰ Է ϴ.    Ͽ о ϼ.

A5. Column ܿ ϸ ö󰡰 ǰ, ߵ 귯 ˴ϴ.  ׷ Ϻη η ׿ ޶ . 

̴ ߷ ۿǴ ̰ ְó ߷ ٸ .  ߷ ɷ ̿ ߷ ߻ ġ ؾ ߷ Դϴ.

A6. Colum з з 帣, ߷忡 帣 Ǿ ֽϴ. 

A7. ߽Ű ̰ ֹ߼ ʿ䵵 з¿ ɰ ˴ϴ.  ׷ ΰ ̶  󸶸ŭ δ иȿ ϱ Ʊ ֹߵ "ֹߵ" Ǵϰ ˴ϴ.  ֹߵ ܼ δ Ұ մϴ.  ̷дܼ ϴ ˾ƺ.

A8. Downcomer ܿ Weir Ʒ 귯 Tray Weir(ⱸ ش) 귯 ǵ Դϴ.  Downcomerδ ׸ 귯 Ǿ ־ ϴµ Downcomer Ϻΰ ׿ Ⱑ Downcomer 귯 Ͼ ִµ  ̺κ Downcomer Ϻΰ ׿ ⵵ ִ κ <Downcomer Seal>̶ մϴ.  δ Downcomer Ϻΰ к(Seal)ǵ Ǿ ־ ׷ Ͼ ʴµ 帧 帧 Ÿ ֽϴ.
     
 com2356   17-03-06 10:04
亯 մϴ. ߰ ڽϴ.

(1) A2. Դϴ. ߽ϴ.
[Reflux ڱ øٸ reflux drum level پ ̴ level control distillate discharge valve 鼭 ٽ ׸ ǰ ˴ϴ. ̿ distillate پǷ feed پ ˴ϴ.]
´ ñմϴ.

(2) A6. Դϴ. з ž η ö󰡰 ˴ϴ. ׷ٸ ž δ з ž Ϻδ з ñմϴ. 翬 䵥 Ϸ ׿. reboiler ޵ Ⱑ (tray) ü ϸ з°ϰ ߻ϱ ̶ ߴµ, ̴ ž-žϺ з ִٴ ִ ̶ ϴ.

(3) ׷ٸ downcomer κп <downcomer seal>̶ ǰ پִٰ ϸ Ǵ° ñմϴ.
ij Stefano   17-03-06 11:19
AA1. (Steady State) ־ 忡 ȭ(Step Change) (Process Variable) (Sensor) ǰ 迡 ġ(Set Point) Ͽ  (Error) ؼϰ ũ ġ, ǴϿ (Controller)  ΰ (Output) ۱(Control Element) ۽Ű ǵ ݴϴ.    ̳ ׸, ȭ ̸ Ǵ ̰ ̵ ϰ ǹǷ (?) ٴ ƴϰ... 

ý ü  帧 ΰ ϴ ũ ð Դϴ. 
߰ ٽ 漳ڸ Reflux ø Column ȯǴ װ þ Feed ۿ ᱹ Distillate پ ٴ .  ȭ ý ü ȭ մϴ.  Reflux ÿ ġ  غ ˴ϴ.  ׸̳ ׸긦 ʿ Column з þ Flooding Ͼ ڴ ġ ؾ ΰ .

AA2.  ž 帧 ٸ Bottom ӹ ְ, ִ · δ з Ÿ Դϴ.  帧 . ׷ Column ֺ ٸ ϴ.  ο ִ ٴڿ ӹ . 

ռ ۿ ߴ, Column 帧 ϴµ з, ߷¿ 帧 Ѵٰ ߽ϴ.  п 귯ϴ.  Ϻο η 귯 Ϻ з з .  з ٸ Ⱑ 带 ϴ. 

ž , Ϻ з ִٴ ƴϰ Ⱑ Ϻο η 귯 з Դϴ.  ް Ŀ ̾߱ ε  з ϱ 귯⵵ ϰ 귯⶧ з ̰   غ... Ⱑ ߻ϰ Ⱑ 귯 з Ÿ <帧> <з> У ȽԴϴ.

׷ ٸϴ.  ߷¿ 帣 Ʒ 귯ϴ.  (Ȥ ) ޶ϴ.  ٴټ з Ͱ .  ־ 귯 Դϴ.  ġ 帧 ׿ Ÿ . (.. ü 쿡 ġ ޶µ ؼ鿡 Ǿз° ǿ ٸ Դϴ.  ž ⿡ ü ġ ̴ ٰ ֵ.). 

ġ ¾ ̶... ߷ 帧 .. ڰ ڱ ...^^

AA3. Seal ǰ ִ ƴϰ Downcomer Ϻ ̺ Downcomer Weir ִ Դϴ.  ̰[http://www.separationprocesses.com/Operations/POT_Chp02e.htm] <Downcomer Outlet Weir> ׷ ִµ Column ȿ ܸ ̱ ̸ ϴ ϴ.
 com2356   17-03-06 12:41
亯 մϴ.
AA1. ũ ð ٽ غڽϴ. AA2. 翬 ġε 򰥸 ص ˼մϴ.

׸ AA3. ÷ֽ ũ Ͽϴ. ⼭ downcomer Ϻ ̰ downcomer weir ؾ Ѵٴ ʹ ʽϴ.

(1) ⼭ downcomer Ϻ ̶ ϸ downcomer clearance ذ Ǵµ downcomer weir κ 𸣰ڽϴ. ٷ tray outlet weir ϴ κ Ͻô ǰ? ׸ ''شٰ ϼ̴µ, ̹ ġǾ ִ downcomer  ܶ Ͽ ''ϵ ִ 𸣰ڽϴ. Downcomer ġ ִ°ǰ?

(2) ׸ ֽ ũ downcomer outlet weir column ȿ ܸ ̱ ϴ 찡 ٰ ϼ̴µ, κ Ͻô 𸣰ڽϴ. ˼ ׸ ȣ ˷ֽø ٽ 캸ڽϴ.
ij Stefano   17-03-06 14:36
(1) Ǽ...
< Downcomer Ϻ ̺ Downcomer Weir ִ >̶ ½ϴ. ̴ ĵξϴ.

̴ Downcomer ߳ ׿ ⵵ ϱ ε Tray ʹ 帧 Ŀ, ʹ Ⱑ Downcomer ֱ ۽ ġ ˴ϴ.  ߿ ִ ʹ ֽϴ ..

(2) Downcomr Outlet Weir θ Outlet Weir Bar κ , ڿ Bubble Cap̳ Valve Tray ޾Ƶ ִ پٴ ̾߱ Դϴ.  ü Outlet Weir ̹Ƿ ϸ Downcomer 쿡 ʰ ٰ (http://gasprocessingnews.com/features/201502/troubleshoot-and-solve-a-gas-treater-downcomer-unsealing-problem-part-1.aspx )ϴµ ̷ ϴ ȿ ܸ(Effective Area) ̱ Դϴ.
     
 com2356   17-03-06 15:24
մϴ.

(1) ׷ 'downcomer seal̶  ǰ ƴ϶ downcomer Ϻ κ ü ⵵ ϴ ̸, ̴  downcomer Ϻ ̺ outlet weir ؼ ̷ ϴ. Outlet weir 2~3inε(å Դϴ) ̿ ° downcomer Ϻ ̸ ϸ ġ ° մϴ.' ص Ǵ ΰ?

(2) Downcomer outlet weir ġȴٴ ñմϴ. Inlet weirʹ ٸ ΰ? ׸ sealing 3° ۿ ޾ֽ ũ inlet weir ġϴ reservoir ִµ, 2 tray active area ҽ ü ʴ´ٴ ص Ǵ ñմϴ.
ij Stefano   17-03-06 22:05
(A1) ½ϴ.
(A2) 귯 ġ Weir ̴ Weir 帣鼭 Tray׸ ϰ ؾ ϱ ̻ Ǿ մϴ.  Weir ĸ ٷ Downcomerε ϴ κ (Ȯ) ⵵ ߰ Ƶδ Weir δ 찡 ִµ ̰ [https://www.google.co.kr/search?q=Tray+weir&biw=1486&bih=678&source=lnms&tbm=isch&sa=X&ved=0ahUKEwjb57C_98HSAhUDNrwKHYsdBQgQ_AUIBigB#imgrc=-HY_mN2qZhJ9VM:] 鿡 weir մϴ.  κ ణ ǫ ֽϴ.

ܿ Downcomer 귯 δ ܸ ۾Ƶ DZ Bubble Cap ̱   Active Area ִ մϴ.  Bubble Cap ȿ Vapor ־ ž ó þ Դϴ.
     
 com2356   17-03-06 23:24
亯 մϴ. ذ Ǿϴ. ǽñ ٶϴ.
   

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