公开(公告)号：EP2487439A1

公开(公告)日：2012-08-15

申请号：EP11154391.4

申请日：2011-02-14

Applicant: Alstom Technology Ltd

Inventor： Heinz, Gerhard ,  Brueggemann, Hellmuth ,  Kendel, Friedemann ,  Rauchfuss, Hardy ,  Wild, Thomas ,  Moenckert, Patrick ,  Kaefer, Gisbert ,  Jönsson, Staffan ,  Bialkowski, Michal ,  Pekdemir, Turgay

IPC: F25J3/04 ,  F23K3/02 ,  F23L7/00

CPC classification number: F23L7/007 ,  F23D1/005 ,  F23K1/00 ,  F23K3/02 ,  F23K2201/103 ,  F25J3/04533 ,  F25J3/04563 ,  F25J3/04581 ,  F25J3/04618 ,  F25J3/0605 ,  F25J2230/06 ,  F25J2240/20 ,  F25J2240/90 ,  F25J2260/42 ,  Y02E20/344

Abstract: The present disclosure relates to a method of milling a fuel for an oxy-fuel combustion burner (9), the method comprising: separating air into a hot nitrogen gas stream, having a temperature of at least 150°C and a purity of at least 98 mol-% nitrogen, and an oxygen gas stream; leading at least a part of the nitrogen gas stream to a fuel mill (2); milling the fuel by means of the fuel mill (2) in a nitrogen rich atmosphere formed by means of the nitrogen gas stream; leading the at least a part of the nitrogen gas stream away from the milled fuel; leading the oxygen gas stream to the oxy-fuel combustion burner (9); conveying the milled fuel to the oxy-fuel combustion burner (9); and burning the fuel, by means of the oxy-fuel combustion burner (9), in an oxygen rich atmosphere formed by means of the oxygen gas stream. The present disclosure further relates to a system for milling a fuel for an oxy-fuel combustion burner as well as to a power plant comprising such a system.

Abstract translation: 本公开涉及到在氧 - 燃料燃烧器铣削燃料的方法（9），所述方法包括：将空气分离成热的氮气流中，具有至少150℃的温度和纯度至少 98摩尔％氮和氧在气流; 氮气流的一部分导致至少一种燃料磨机（2）; 研磨通过在由氮气流而形成的富氮气氛中的燃料磨机（2）的装置中的燃料; 领先氮气流从磨碎燃料离开的至少一个部分; 领先氧气流的氧 - 燃料燃烧器（9）; 输送研磨燃料到氧 - 燃料燃烧器（9）; 和燃烧燃料，由氧 - 燃料燃烧器（9）的方式，在由氧气流而形成的富氧气氛。 本发明还涉及一种系统，用于研磨的燃料用于在氧 - 燃料燃烧器以及一种发电厂，包括寻求的系统。