[12] Patent
[11] Patent No.:GC0010826  
[45] Date of Publishing the Grant of the Patent: 1/Jun /2020                63/2020  
Number of the Decision to Grant the Patent:2020/163196
Date of the Decision to Grant the Patent:13/Feb/2020

[21] Application No.:GC 2011-18751

[22] Filing Date:4/7/2011

[30] Priority:

[33] State [32] Priority date [31] Priority No.
EP
6/7/2010
10168495.9

[72] Inventors:1- FILIPPI Ermanno ،2- BARATTO Francesco ،3- PANZA Sergio ،4- OSTUNI Raffaele

[73] Owner: Casale S.A., Via Giulio Pocobelli, 6, CH-6900, LUGANO-BESSO, Switzerland

[74] Agent: Suleiman I. Al-Ammar Law Office

  

 

  

[51]IPC:
Int. Cl.: C01B3/02; C01B3/38; C01B3/48; C01B3/50; C01B3/56 (2006.01)

[56] Cited Documents:

-US 4 296 085 A (BANQUY DAVID L) 20 October 1981
-EP 2 172 417 A1 (AMMONIA CASALE SA [CH]) 7 April 2010
-EP 2 065 337 Al (AMMONIA CASALE SA [CH]) 3 June 2009
-WO 02/48027 Al (CONTINENTAL ENGINEERING B V [NL]; DE WIT JACOBUS JOHANNES [NL]) 20 June 2002
-US 4 778 670 A (PINTO ALWYN [GB]) 18 October 1988
-EP 1 690 826 A2 (AIR PROD & CHEM [US]) 16 August 2006
 
Examiner: Eng. Abdulaziz S. AlMotek

[54] PROCESS FOR PRODUCING AMMONIA SYNTHESIS GAS
[57] Abstract: A A process for producing ammonia synthesis gas from a hydrocarbon-containing feedstock, with steps of primary reforming, secondary reforming with an oxidant stream, and further treatment of the synthesis gas including shift, removal of carbon dioxide and methanation, wherein the synthesis gas delivered by secondary reforming is subject to a medium-temperature shift (MTS) at a temperature between 200 and 350 °C, and primary reforming is operated with a steam-to-carbon ratio lower than 2. A corresponding method for revamping an ammonia plant is disclosed, where an existing HTS reactor is modified to operate at medium temperature, or replaced with a new MTS reactor, and the steam-to-carbon ratio in the primary reformer is lowered to a value in the range 1-5 – 2, thus reducing inert steam in the flow rate trough the equipments of the front-end.
No. of claims: 10     No. of figures: 1


 

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