Assembled cathode and plasma igniter with such cathode

Details Assembled cathode and plasma igniter with such cathode Assembled cathode and plasma igniter with such cathode

2007-10-16

2007-10-16

Jackson, Stephen W. (Department: 2836)

Furnaces

Process

Burning pulverized fuel

C361S247000, C219S121110, C219S121360, C219S121480

Reexamination Certificate

active

10469048

ABSTRACT:
This invention relates to a plasma igniter for directly igniting the pulverized coal burner. Said plasma igniter consists of a plasma generator which includes a composite anode, an combined type cathode, an electromagnetic coil and a transmitting coil; a pulverized coal burner which comprises multi-stage chambers for conveying igniting coal, an equipment for adjusting concentration of coal powder and a four-stage burner canister; and a generator brace. Said combined type cathode consists of a cathode plate, a fixation nut, a conductive pipe, an inflowing pipe, an inflowing guiding pipe, a cathode lid and a sealing spacer. The lining for generating electric arc is assembled with the front of cathode. An alloy plate is used as the cathode plate. The nozzle that used for cooling the cathode is first convergent and then expansive, and is placed in the middle of the conductive pipe. The plasma igniter has the advantage of stable burning. It can be used as not only a main burner for the boiler but also an igniting burner. Since oil is not used, lots of petroleum source is saved.

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