JP2012511493A - 一体化ガス精製装置 - Google Patents
一体化ガス精製装置 Download PDFInfo
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Abstract
【選択図】図1
Description
a) 単一の合成ガス流Xは、H2/COとして算出される合成ガスモル比が生成物Cの生成に対して最適化されていること、
b) 単一の合成ガス流Xは、合成ガス流X1、合成ガス流X2、合成ガス流X3、および所望される場合は含まれていてよい合成ガス流X4に分離されること、
c) 合成ガス流X1は、水性ガスシフト反応工程に掛けられて、合成ガス流X1からのCO、および水が、CO2およびH2に変換されること、
d) 工程c)からのCO2およびH2は、それぞれ分離され、回収されること、
e) 工程d)からのH2の一部分は、水素流Aとして用いられること、
f) 工程d)からのH2の一部分は、合成ガス流X2と混合され、これは次に水素リッチ合成ガス流Bとして用いられること、
g) 合成ガス流X3は、水素低減合成ガス流Cとして用いられること、ならびに、所望される場合は含まれていてよい、
h) 合成ガス流X4は、その二酸化炭素および水素を除去する処理を施され;および、得られた一酸化炭素流は、ガス流Dの一酸化炭素源として用いられること、
を特徴とする。
‐ 天然ガス源(101)が複数の合成ガス発生反応器(102および103)へ導入されて、以降「水素低減合成ガス」と称する単一の合成ガス源(104)を発生し、これが下流の操作に用いられる。
‐ 前記の発生した水素低減合成ガス(104)が3つの部分に分けられる(105、106、および107)。
‐ 合成ガスの第一の部分(105)は、フィッシャートロプシュ合成反応を含むガス液化プラント(108)の合成ガス源として用いられる。
‐ 合成ガスの第二の部分(106)は、水性ガスシフト反応工程(109)、ならびにこれに続くCO2分離(110)、メタン化工程(111)、および窒素洗浄工程(112)に掛けられ;この処理の過程で生成された水素は、アンモニアプラント(113)の水素源として用いられる。
‐ 合成ガスの第三の部分(107)は、上記第二の部分の処理から来る水素で水素リッチとされ(114)、以降「水素リッチ合成ガス」と称する得られた水素リッチとされた水素合成ガス(115)は、メタノールプラント(116)の合成ガス源として用いられる。
‐ 所望される場合は、ガス液化プラントからのテールガス流(117)を循環し、合成ガス反応器へ導入される天然ガスフィードと混合してもよい。
‐ 天然ガス源(201)が複数の合成ガス発生反応器(202、203、および204)へ導入されて、以降「水素低減合成ガス」と称する単一の合成ガス源(205)を発生し、これが下流の操作に用いられる。
‐ 前記の発生した水素低減合成ガス(205)が4つの部分に分けられる(206、207、208、および209)。
‐ 合成ガスの第一の部分(206)は、フィッシャートロプシュ合成反応を含むガス液化プラント(210)の合成ガス源として用いられる。
‐ 合成ガスの第二の部分(207)は、水性ガスシフト反応工程(211)、ならびにこれに続くCO2分離(212)、メタン化工程(213)、および窒素洗浄工程(214)に掛けられ;この処理の過程で生成された水素は、アンモニアプラント(215)の水素源として用いられる。
‐ 合成ガスの第三の部分(208)は、上記第二の部分の処理から来る水素で水素リッチとされ(216)、以降「水素リッチ合成ガス」と称する得られた水素リッチとされた水素合成ガス(217)は、メタノールプラント(218)の合成ガス源として用いられる。
‐ 合成ガスの第四の部分(209)は、二酸化炭素を除去する吸収器(219)、水素リッチガス流(221)および一酸化炭素流を得る低温分離器(220)に掛けられ、この一酸化炭素流は、酢酸プラント(222)の一酸化炭素源として用いられる。
‐ 所望される場合は、ガス液化プラントからのテールガス流(223)を循環し、合成ガス反応器へ導入される天然ガスフィードと混合してもよい。
a) 単一の合成ガス流Xは、H2/COとして算出される合成ガスモル比が生成物Cの生成に対して最適化されていること、
b) 単一の合成ガス流Xは、合成ガス流X1、合成ガス流X2、および合成ガス流X3に分離されること、
c) 合成ガス流X1は、水性ガスシフト反応工程に掛けられて、合成ガス流X1からのCO、および水が、CO2およびH2に変換されること、
d) 工程c)からのCO2およびH2は、それぞれ分離され、回収されること、
e) 工程d)からのH2の一部分は、水素流Aとして用いられること、
f) 工程d)からのH2の一部分は、合成ガス流X2と混合され、これは次に水素リッチ合成ガス流Bとして用いられること、ならびに、
g) 合成ガス流X3は、水素低減合成ガス流Cとして用いられること、
を特徴とする。
a) 単一の合成ガス流Xは、H2/COとして算出される合成ガスモル比が生成物Cの生成に対して最適化されていること、
b) 単一の合成ガス流Xは、合成ガス流X1、合成ガス流X2、合成ガス流X3、および合成ガス流X4に分離されること、
c) 合成ガス流X1は、水性ガスシフト反応工程に掛けられて、合成ガス流X1からのCO、および水が、CO2およびH2に変換されること、
d) 工程c)からのCO2およびH2は、それぞれ分離され、回収されること、
e) 工程d)からのH2の一部分は、水素流Aとして用いられること、
f) 工程d)からのH2の一部分は、合成ガス流X2と混合され、これは次に水素リッチ合成ガス流Bとして用いられること、
g) 合成ガス流X3は、水素低減合成ガス流Cとして用いられること、ならびに、
h) 合成ガス流X4は、その二酸化炭素および水素を除去する処理を施され;および、得られた一酸化炭素流は、ガス流Dの一酸化炭素源として用いられること、
を特徴とする。
CO + H2O = CO2 + H2
を例とする水蒸気との反応により、一酸化炭素が二酸化炭素と水素とに変換される。
CO + 3H2 ⇔ CH4 + H2O
CO2 + 4H2 ⇔ CH4 + 2H2O
3H2 + N2 ⇔ 2NH3
である。
i. 酸化亜鉛および促進剤から成る、高圧亜鉛触媒;ならびに、
ii. 酸化亜鉛、酸化銅、および促進剤から成る、低圧銅触媒
である。
[CO + 2H2]n + H2 → CH3(CH2)n−2CH3 + nH2O
CO + 3H2 → CH4 + H2O
CO + H2O → CO2 + H2
Claims (9)
- 単一の合成ガス流Xからの、生成物Aの生成に有用な水素流A;生成物Bの生成に有用な水素リッチ合成ガス流B;生成物Cの生成に有用な水素低減合成ガス流C;および所望される場合は含まれていてよい、生成物Dの生成に有用な一酸化炭素流D、の同時生成のためのプロセスであって:
a) 前記単一の合成ガス流Xは、H2/COとして算出される合成ガスモル比が前記生成物Cの生成に対して最適化されていること、
b) 前記単一の合成ガス流Xは、合成ガス流X1、合成ガス流X2、合成ガス流X3、および所望される場合は含まれていてよい合成ガス流X4に分離されること、
c) 前記合成ガス流X1は、水性ガスシフト反応工程に掛けられて、前記合成ガス流X1からのCO、および水が、CO2およびH2に変換されること、
d) 工程c)からの前記CO2およびH2は、それぞれ分離され、回収されること、
e) 工程d)からの前記H2の一部分は、前記水素流Aとして用いられること、
f) 工程d)からの前記H2の一部分は、合成ガス流X2と混合され、これは次に前記水素リッチ合成ガス流Bとして用いられること、
g) 前記合成ガス流X3は、前記水素低減合成ガス流Cとして用いられること、ならびに、所望される場合は含まれていてよい、
h) 前記合成ガス流X4は、その二酸化炭素および水素を除去する処理を施され;および、得られた一酸化炭素流は、ガス流Dの一酸化炭素源として用いられること、
を特徴とする、プロセス。 - 前記プロセスが、前記所望される場合は含まれていてよい合成ガス流X4からの、前記所望される場合は含まれていてよい一酸化炭素流Dの生成を含まない、請求項1に記載のプロセス。
- 生成物Aはアンモニアであり;生成物Bはメタノールであり;生成物Cは炭化水素混合物である、請求項2に記載のプロセス。
- 前記プロセスが、前記所望される場合は含まれていてよい合成ガス流X4からの、前記所望される場合は含まれていてよい一酸化炭素流Dの生成を含む、請求項1に記載のプロセス。
- 生成物Aはアンモニアであり;生成物Bはメタノールであり;生成物Cは炭化水素混合物であり;および、生成物Dは酢酸である、請求項4に記載のプロセス。
- 工程h)から回収される前記水素が、前記水素流Aのための水素源の一部として、および/または前記水素リッチ合成ガス流Bのための水素源の一部として用いられる、請求項4または請求項5に記載のプロセス。
- 前記単一の合成ガス流Xの、H2/COとして算出される合成ガスモル比が1.6から2.5である、請求項1から6のいずれか1項に記載のプロセス。
- 前記水素リッチ合成ガス流BのSnモル比、(H2−CO2):(CO+CO2)が、1.6超である、請求項1から7のいずれか1項に記載のプロセス。
- 前記水素リッチ合成ガス流BのSnモル比、(H2−CO2):(CO+CO2)が、3.0未満である、請求項1から8のいずれか1項に記載のプロセス。
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