公开(公告)号：US09758883B2

公开(公告)日：2017-09-12

申请号：US15145119

申请日：2016-05-03

Applicant: ALSTOM Technology Ltd

Inventor： Anders Kenneth Sorhuus ,  Geir Wedde ,  Odd Edgar Bjarno

IPC: C25C3/22 ,  C25C7/06 ,  C25C3/06 ,  F27B14/08 ,  F27D17/00 ,  F28D7/16 ,  F16L53/00 ,  C25C3/24 ,  F28D21/00 ,  F28F9/02 ,  F28F13/08 ,  F28F19/00

CPC classification number: C25C3/22 ,  C25C3/06 ,  C25C3/24 ,  C25C7/06 ,  F16L53/00 ,  F27B14/08 ,  F27D17/001 ,  F27D17/002 ,  F27D17/004 ,  F28D7/1615 ,  F28D7/1653 ,  F28D21/0003 ,  F28F9/0282 ,  F28F13/08 ,  F28F19/00 ,  Y02P10/262 ,  Y10T137/6416

Abstract: A raw gas collection system for collecting raw gas from a plurality of aluminium smelting pots is equipped with a plurality of branch ducts, each of which is arranged to channel a respective branch flow of raw gas from an aluminium smelting pot to a collection duct, which is common to and shared by the branch ducts. Each of said branch ducts is, near an outlet thereof, equipped with a curved section for aligning the branch flow with a flow direction of raw gas already present in the common collection duct, and a constriction for accelerating the branch flow through the branch duct outlet into the common collection duct. Furthermore, each of said branch ducts is equipped with a heat exchanger for removing heat from the respective branch flow of raw gas. The combined flow resistance of the constriction and the heat exchanger reduces the need for adjusting the respective branch flows using dampers, thereby reducing the power required to transport the raw gas.

公开(公告)号：US09739533B2

公开(公告)日：2017-08-22

申请号：US14818608

申请日：2015-08-05

Applicant: ALSTOM Technology Ltd

Inventor： Saleem Khader Zwayyed

IPC: B01F3/04 ,  F26B5/16 ,  B05B3/10 ,  B01D53/50 ,  F16F15/36 ,  F26B3/14

CPC classification number: F26B5/16 ,  B01D53/504 ,  B01D53/505 ,  B01D53/507 ,  B01D53/79 ,  B01D53/80 ,  B01D2251/404 ,  B01D2251/606 ,  B01D2257/302 ,  B01D2258/0283 ,  B01F3/04035 ,  B05B3/10 ,  B05B3/1057 ,  F16F15/363 ,  F16F15/366 ,  F26B3/14

Abstract: A fluid type, gel/wax/paraffin type, or mechanical type harmonic balancer for built-in or retrofit use with an atomizer of a SDA flue gas desulfurization system for reduced atomizer vibration within or outside of the atomizer's harmonic range is provided herein. Also provided, is a method of using the built-in or retrofit harmonic balancer with an atomizer of a SDA flue gas desulfurization system to decrease atomizer vibration within or outside the atomizer's harmonic range, to increase atomizer on-line service hours, decrease atomizer maintenance requirements, and to decrease atomizer associated costs.

公开(公告)号：US09726375B2

公开(公告)日：2017-08-08

申请号：US14056055

申请日：2013-10-17

Applicant: ALSTOM Technology Ltd

Inventor： Olaf Stallmann

IPC: F23N3/00 ,  F23J11/00 ,  F23L7/00 ,  F23J15/00 ,  F23J15/06 ,  F23N3/08 ,  B01D53/00

CPC classification number: F23N3/002 ,  B01D53/002 ,  B01D2256/22 ,  F23J11/00 ,  F23J15/00 ,  F23J15/006 ,  F23J15/06 ,  F23J2215/50 ,  F23J2900/15061 ,  F23L7/007 ,  F23N3/085 ,  Y02C10/04 ,  Y02E20/344

Abstract: The present disclosure relates to a boiler system that includes an oxyfuel boiler in which a stream of oxygen and a fuel are combusted to generate a stream of flue gas. A flue gas condenser condenses the cleaned flue gas. A flue gas compression unit produces a stream of pressurized carbon dioxide rich flue gas. A pressure control system measures and controls the pressure after the flue gas conditioning system to a predetermined set value. A flow control system measures and controls the flow after the flue gas compression unit to a predetermined set value. The present disclosure further relates to a method of operating such a boiler system for an oxy-fuel process as well as to a power plant comprising such a system.

公开(公告)号：US09726085B2

公开(公告)日：2017-08-08

申请号：US14445627

申请日：2014-07-29

Applicant: ALSTOM Technology Ltd

Inventor： Sebastian Lipari ,  Ghislain Singla ,  Thiemo Meeuwissen ,  Theodoros Ferreira-Providakis

IPC: F02C6/00 ,  F02C9/28 ,  F02C9/34

CPC classification number: F02C9/28 ,  F02C6/003 ,  F02C9/34 ,  F05D2270/14 ,  F05D2270/303 ,  F05D2270/309

Abstract: The invention relates to a method for controlling a gas turbine group including, a first combustion chamber, a first turbine connected, a second combustion chamber, a second turbine, and a load. The method includes: measuring a temperature TAT1 at an outlet of the first turbine; determining a ratio S1R of a fuel mass flow feeding a pilot flame of the first combustion chamber to a total fuel mass flow feeding the first combustion chamber based upon the measured temperature TAT1 in accordance with a predetermined mapping table between ratio S1R and temperature TAT1; adopting the larger one between the determined ratio S1R and a predetermined booster ratio S1R to be used in the controlling fuel flow feeding the first combustion chamber of the gas turbine group. Pulsation behavior of the gas turbine group may be improved. High pulsation during fast de-loading of the gas turbine group is substantially is decreased, avoiding potential damage to the parts of the gas turbine group.

公开(公告)号：US09726082B2

公开(公告)日：2017-08-08

申请号：US13902133

申请日：2013-05-24

Applicant: ALSTOM Technology Ltd

Inventor： Mark Harvey Tothill

IPC: F02C7/12 ,  F01K3/08 ,  F01K7/16 ,  F01K9/00 ,  F01K13/02 ,  F28D17/00 ,  F28D20/00

CPC classification number: F02C7/12 ,  F01K3/08 ,  F01K7/165 ,  F01K9/003 ,  F01K13/02 ,  F28D17/005 ,  F28D20/0056 ,  Y02E60/142

Abstract: A turbine bypass system comprises a bypass path which is selectively operable to deliver hot gases to a gas cooler and a pebble bed positioned in the bypass path upstream of the gas cooler. The pebble bed absorbs heat from the bypass gases and thereby reduces the temperature of the bypass gases prior to delivery of the bypass gases to the gas cooler.

公开(公告)号：US09724638B2

公开(公告)日：2017-08-08

申请号：US15142205

申请日：2016-04-29

Applicant: ALSTOM Technology Ltd

Inventor： Raymond Raulfs Gansley ,  Jurgen Dopatka ,  Sanjay Kumar Dube ,  Philip C. Rader

IPC: B01D53/00 ,  B01D53/34 ,  B01D53/38 ,  B01D53/50 ,  B01D53/74 ,  B01D53/80 ,  B01D53/14 ,  C02F1/04 ,  B01D1/20 ,  B01D1/00 ,  F23J15/00 ,  F23J15/04 ,  B01D1/14 ,  B01D1/16 ,  C02F1/12 ,  C02F1/28 ,  C02F1/06 ,  C02F1/66 ,  C02F103/18 ,  B01D53/30 ,  B01D53/86

CPC classification number: B01D53/1456 ,  B01D1/0011 ,  B01D1/14 ,  B01D1/16 ,  B01D1/20 ,  B01D53/30 ,  B01D53/504 ,  B01D53/8625 ,  B01D2253/102 ,  B01D2257/2045 ,  B01D2257/2047 ,  B01D2257/302 ,  B01D2257/402 ,  B01D2257/404 ,  B01D2257/60 ,  B01D2257/602 ,  B01D2258/0283 ,  C02F1/048 ,  C02F1/06 ,  C02F1/12 ,  C02F1/283 ,  C02F1/66 ,  C02F2103/18 ,  C02F2209/02 ,  C02F2209/38 ,  C02F2305/12 ,  F23J15/003 ,  F23J15/04 ,  F23J2215/20 ,  F23J2217/102 ,  F23J2219/40 ,  Y02C20/10

Abstract: An apparatus for evaporating waste water and reducing flue gas acid gas emissions includes an evaporator device configured to receive a portion of flue gas emitted from a combustion unit and waste water for direct contact of the flue gas with the waste water to cool and humidify the flue gas, and to evaporate the waste water. An alkaline reagent as well as activated carbon may be mixed with the waste water prior to waste water contact with the flue gas. Solid particulates that are dried and entrained within the cooled and humidified flue gas can be separated from the flue gas via a particulate collector.

公开(公告)号：US09698640B2

公开(公告)日：2017-07-04

申请号：US14102697

申请日：2013-12-11

Applicant: ALSTOM Technology Ltd

Inventor： Johann Haldemann

IPC: H02K3/24 ,  H02K3/14

CPC classification number: H02K3/24 ,  H02K3/14

Abstract: A stator winding of a directly cooled turbogenerator comprises directly gas cooled double Roebel bars is arranged as active parts in slots of a stator body. Each double Roebel bar has two single Roebel bars, which includes each a stack of a plurality of transposed individual strands, and are separated by an intermediate stack of cooling tubes. Mounting space is saved by constructing, for the compensation of stray field voltages, at least one double Roebel bar as a cross-over bar with the strands being transposed over the stack of cooling tubes in the middle in order to change the sides of the single Roebel bars along the active part.

公开(公告)号：US20170178832A1

公开(公告)日：2017-06-22

申请号：US15327557

申请日：2015-07-22

Applicant: Alstom Technology Ltd.

Inventor： David Berard ,  Yang Yang

IPC: H01H9/54 ,  H03K17/567 ,  H03K17/60

CPC classification number: H01H9/548 ,  H02H3/025 ,  H02H3/08 ,  H02H7/222 ,  H02H9/005 ,  H02H9/02 ,  H02M1/34 ,  H03K17/567 ,  H03K17/60

Abstract: A breaker device for interrupting current flowing on a transmission line, the device comprising three electrical branches (B1, B2, B3) connected in parallel, including a main branch (B1) in which the current to be interrupted flows and an auxiliary branch (B2), the main branch comprising at least one semi-conductor breaker cell (CEL1) connected in series with at least one mechanical interrupter/disconnector (Sm), the auxiliary branch (B2) comprising at least one thyristor, the breaker device further comprising a control circuit (CM) suitable for interrupting a current that flows in the main branch. Once the current is interrupted in the semi-conductor element of the breaker cell of the main branch, the control circuit acts to command the thyristor of the auxiliary branch (B2) to be put into a conductive state whenever a current flowing in the voltage limiter(s) reaches the value of the current that is flowing in the transmission line.

公开(公告)号：US09677764B2

公开(公告)日：2017-06-13

申请号：US14189206

申请日：2014-02-25

Applicant: ALSTOM Technology Ltd

Inventor： Klaus Knapp ,  Peter Marx ,  Karl Reyser ,  Maria-Belen Gasser-Pagani

IPC: F02C9/40 ,  F23N1/00 ,  F02C7/224 ,  F02C9/00

CPC classification number: F23N1/002 ,  F02C7/224 ,  F02C9/00 ,  F02C9/40 ,  F05D2260/80 ,  Y02E20/16

Abstract: The method for adjusting a natural gas temperature for a fuel supply line of a gas turbine engine includes measuring by infrared analysis the natural gas percentage content of methane (CH4), ethane (C2H6), propane (C3H8), butane (C4H10), carbon dioxide (CO2), calculating the nitrogen (N2) percentage content as the complement to 100 of the measured percentage content of methane (CH4), ethane (C2H6), propane (C3H8), butane (C4H10), carbon dioxide (CO2), calculating an index indicative of the natural gas energy content and adjusting the natural gas temperature on the basis of the index.

公开(公告)号：US09670572B2

公开(公告)日：2017-06-06

申请号：US14705264

申请日：2015-05-06

Applicant: ALSTOM Technology Ltd

Inventor： Thomas Etter ,  Roman Engeli ,  Andreas Kuenzler

IPC: C22F1/10 ,  C22C19/03 ,  C22C19/07 ,  C21D6/00 ,  B22F3/105 ,  B22F3/15 ,  B22F3/16 ,  B22F3/24 ,  B33Y40/00 ,  B22F5/00

CPC classification number: C22F1/10 ,  B22F3/1055 ,  B22F3/15 ,  B22F3/16 ,  B22F3/24 ,  B22F5/009 ,  B22F2003/248 ,  B33Y40/00 ,  C21D6/00 ,  C22C19/03 ,  C22C19/07 ,  Y02P10/295

Abstract: The invention relates to a method of post-built up heat treatment of an additively manufactured high strength component made of a gamma-prime strengthened superalloy based on Ni or Co or Fe or combinations thereof. An application of a rapid heating-up rate of 25 to 60° C./min in a specific temperature range during the first post-built heat treatment after additive manufacturing avoids or at least minimizes the gamma-prime precipitation in the component during heat-up. This results in crack-free components/articles compared to significant cracking present in conventionally heat treated components.