JP5826066B2 - Coシフト反応装置及びガス化ガス精製システム - Google Patents
Coシフト反応装置及びガス化ガス精製システム Download PDFInfo
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Description
CO+H2O → H2+CO2 ・・・(1)
本発明による実施例に係るCOシフト反応装置について、図面を参照して説明する。図1は、本発明による実施例に係るCOシフト反応装置を適用したガス化ガス精製システムを示す概略図である。図1に示すように、ガス化ガス精製システム10は、COシフト反応装置11と、湿式排ガス処理装置12と、H2S/CO2回収装置13とを有する。ガス化ガス精製システム10は、ガス化炉14で生成される石炭ガス化ガス(ガス化ガス)15を精製するものである。ガス化ガス精製システム10は、COシフト反応装置11でのCOシフト反応工程と、湿式排ガス処理装置12での湿式排ガス処理工程と、H2S/CO2回収装置13でのH2S、CO2除去工程とからなるものである。
COシフト反応装置11は、ガス化ガス15中の一酸化炭素(CO)を改質し、COシフト触媒下で二酸化炭素(CO2)に変換する装置である。図2は、本実施例に係るCOシフト反応装置11の構成を示す概略図である。図2に示すように、COシフト反応装置11は、断熱反応器(反応器)31A〜31Cと、ガス供給ラインl11〜l15と、第1のガス流量調節手段32A、32Bと、ガス排出ラインl21〜l25と、ガス分離ラインl31、l32と、第2のガス流量調節手段33A、33Bと、を有する。なお、本実施例においては、COシフト反応装置11は断熱反応器を3つ設けているが更に複数設けるようにしてもよい。
CO+H2O→CO2+H2 ・・・(1)
次に、断熱反応器31Aからガス排出ラインl21に排出された処理中ガス38Aのガス供給量F11を80%としたとき、第2のガス流量調節手段33Aによりガス排出ラインl22側に供給されるガス供給量F13と、ガス分離ラインl31側に供給されるガス供給量F14とは、例えば、16%対64%程度の割合となるように調整される。
そして、ガス分離ラインl31側に供給される処理中ガス38A−2とガス化ガス15とが混合されたガス化混合ガス41Aのガス供給量F20は、ガス供給ラインl13側を通過するガス化ガス15のガス供給量F12とガス分離ラインl31側に供給される処理中ガス38A−2のガス供給量F14とを合わせた84%とする。このとき、第1のガス流量調節手段32Bでガス供給ラインl14側に供給されるガス化混合ガス41Aのガス供給量F21とガス供給ラインl15側に供給されるガス供給量F22とは、例えば、68%対16%程度の割合となるように調整される。
次に、断熱反応器31Bからガス排出ラインl23に排出された処理中ガス38Bのガス供給量F21を68%としたとき、第2のガス流量調節手段33Bによりガス排出ラインl24側に供給されるガス供給量F23と、ガス分離ラインl32側に供給されるガス供給量F24とは、例えば、9%対59%程度の割合となるように調整される。
そして、ガス供給ラインl15側に供給される処理中ガス38B−2とガス化混合ガス41Aとが混合されたガス化混合ガス41Bのガス供給量F30はガス供給ラインl15側を通過するガス化混合ガス41Aのガス供給量F22とガス分離ラインl32側に供給される処理中ガス38B−2のガス供給量F24とを合わせた75%とする。このとき、断熱反応器31Cからガス排出ラインl25に排出された改質ガス42のガス供給量F30は75%となる。
改質ガス42は、改質ガス42のガス供給量F30(75%)と、ガス排出ラインl22側に供給されるガス供給量F13(16%)と、ガス排出ラインl24側に供給されるガス供給量F23(9%)とを合わせて、ガス供給量F40が100%となって、COシフト反応装置11から排出される。
本実施例に係るCOシフト反応装置11を備えた石炭ガス化発電プラントについて、図面を参照して説明する。図7は、石炭ガス化発電プラントの一例を示す図である。図7に示すように、石炭ガス化発電プラント50は、ガス化炉14と、脱塵装置23と、COS変換装置51と、COシフト反応装置11と、H2S/CO2回収装置13、複合発電設備52とを有する。
11 COシフト反応装置
12 湿式排ガス処理装置
13 H2S/CO2回収装置
13A 吸収塔
13B 再生塔
14 ガス化炉
15 石炭ガス化ガス(ガス化ガス)
21 石炭
22 ガス化剤
23 脱塵装置
24A〜24C、40A、40B 熱交換器
25 水蒸気供給装置(水蒸気供給手段)
26、26A〜26C 水蒸気
31A〜31C 断熱反応器
31a〜31c ガス導入口
39a〜39c ガス排出口
32A、32B 第1のガス流量調節手段
33A、33B 第2のガス流量調節手段
34 COシフト触媒
35A〜35C COシフト触媒層
36 ガス分留部
37A、37B ガス流量調節計(FIC)
38A、38B 処理中ガス
41A、41B ガス化混合ガス
42 改質ガス(処理済みガス)
43 再生加熱器
44 精製ガス
50 石炭ガス化発電プラント
51 COS変換装置
52 複合発電設備
53 ガス化空気圧縮機
54 空気
55 空気分離装置
61 ガスタービン
62 蒸気タービン
63 発電機
64 排熱回収ボイラ(HRSG)
65 燃焼器
66 圧縮機
67 空気
68 燃焼ガス
69 タービン
70、73 排ガス
71 蒸気
72 熱交換器
74 煙突
l11〜l15 ガス供給ライン
l21〜l25 ガス排出ライン
l31、l32 ガス分離ライン
V11、V12 ガス流量調節弁
h1〜h3 COシフト触媒層の長手方向の長さ
F11〜F14、F21〜F24、F30 ガス供給量
Claims (3)
- COを含有するガス中のCOを改質するCOシフト触媒が充填されてなるCOシフト触媒層を備える複数の反応器と、
各々の前記反応器に前記ガスを供給する少なくとも1つのガス供給ラインと、
前記ガス供給ラインに設けられ、各々の前記反応器に供給する前記ガスのガス供給量を調整する少なくとも1つの第1のガス流量調節手段と、
前記反応器から前記ガス中のCOを少なくとも一部改質した処理中ガスを排出するガス排出ラインと、
前記ガス供給ラインと前記ガス排出ラインとを連結し、前記ガス排出ライン中の前記処理中ガスの一部を抜き出す少なくとも1つのガス分離ラインと、
前記ガス排出ラインと前記ガス分離ラインとの接続する箇所に設けられ、前記ガス排出ライン及びガス分離ラインに供給する前記処理中ガスのガス供給量を調整する少なくとも1つの第2のガス流量調節手段と、
を有することを特徴とするCOシフト反応装置。 - 請求項1において、
各々の前記COシフト触媒層の長さが異なることを特徴とするCOシフト反応装置。 - ガス化炉で燃料である石炭をガス化して生成されたガス化ガス中のCOをCOシフト触媒下でCO2に変換する請求項1又は2に記載のCOシフト反応装置と、
前記COシフト反応装置でCOシフト反応させた後のガス化ガスを浄化する湿式排ガス処理装置と、
前記湿式排ガス処理装置で浄化した後のガス化ガス中の二酸化炭素及び硫化水素を除去し、精製する精製装置と、
を有することを特徴とするガス化ガス精製システム。
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AU2013227680A AU2013227680B2 (en) | 2012-02-27 | 2013-02-08 | CO shift reaction apparatus and gasification gas refining system |
US14/371,367 US9238208B2 (en) | 2012-02-27 | 2013-02-08 | CO shift reaction apparatus and gasification gas refining system |
PCT/JP2013/053139 WO2013129086A1 (ja) | 2012-02-27 | 2013-02-08 | Coシフト反応装置及びガス化ガス精製システム |
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US4153580A (en) | 1977-12-09 | 1979-05-08 | United Catalysts Inc. | CO conversion catalyst |
US4233180A (en) | 1978-11-13 | 1980-11-11 | United Catalysts Inc. | Process for the conversion of carbon monoxide |
JPS5662888A (en) | 1979-10-22 | 1981-05-29 | Continental Oil Co | Manufacture of methaneecontaining substitute natural gas |
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