ignition of pulverized coal with arc heated air

ignition of pulverized coal with arc heated air

Ignition of Pulverized Coal with Arc Heated Air

2021-3-1  Menu. Home; Journals. AIAA Journal; Journal of Aerospace Information Systems; Journal of Air Transportation; Journal of Aircraft; Journal of Guidance, Control, and Dynamics

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Ignition of Pulverized Coal with Arc Heated Air

2019-11-12  Journal of Air Transportation; Journal of Aircraft; Journal of Guidance, Control, and Dynamics; Journal of Propulsion and Power; ... Ignition of Pulverized Coal with Arc Heated Air. P. R. Blackburn ; P. R. Blackburn . Union Carbide Corporation, Tonawanda, N.

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ignition of pulverized coal with arc heated air

_1957 Ignition of pulverized coal fuel-92ghd hair22-air combustion. In fact, when the ignition is pulverized coal power plants to varying degrees... with different oil output when the gun firing test, test results consistent with the results of this...

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ignition of pulverized coal with arc heated air

ignition of pulverized coal with arc heated air GM stone crusher machine is designed to achieve maximum productivity and high reduction ratio. From large primary jaw crusher and impact crusher to cone crusher and VSI series for secondary or tertiary stone crushing, GM can supply the right crusher as well as complete crushing plant to meet your ...

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High energy arc ignition of pulverized coal -

The present invention relates to the "direct" ignition of pulverized coal and particularly to the employment of an electric arc to initiate the combustion of a fuel stream comprised of pulverized coal

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High energy arc ignition of pulverized coal (Patent ...

High energy arc ignition of pulverized coal. Full Record; Other Related Research; Abstract. An electrical discharge is controlled in such a manner as to permit its use to reliably ignite a fuel stream consisting of pulverized coal entrained in air. The ignition technique of the present invention creates expanding and contracting plasma pockets ...

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Ignition of pulverized coal with hot air burners

Download Citation Ignition of pulverized coal with hot air burners Focusing on a new kind of pulverized coal burners in power plant boilers for directly ignition with hot air, based on on-site ...

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Plasma arc ignition of pulverized coal (Journal Article ...

A prototype Plasma Arc Ignitor has been tested in a half-scale, pulverized-coal Dual Register Burner over a wide range of operating conditions with a variety of coals. Full scale tests with the prototype ignitor have been conducted on a 650-MW unit firing an Eastern bituminous coal.

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Ignition and combustion of laser-heated pulverized

1996-8-1  An increase in oxygen content gave a high heating rate in the ignition stage and raised the temperature in sustained combustion. Copyright (C) 1996 Elsevier Science Ltd. (Keywords: pulverized coal; combustion; laser heating) To minimize coke consumption and C02 emission, more and more pulverized coal is being injected into blast furnaces'.

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Plasma Arc Burner for Pulverized Coal Combustion

2018-6-6  arc plasma heating of air-fuel mixture up to the temperature of coal devolatilization and carbon residue partial gasification. By that initial coal high or low rank from air-coal mixture, hot combustible gas and highly-reacting coke residue is obtained.

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High energy arc ignition of pulverized coal (Patent ...

High energy arc ignition of pulverized coal. Full Record; Other Related Research; Abstract. An electrical discharge is controlled in such a manner as to permit its use to reliably ignite a fuel stream consisting of pulverized coal entrained in air. The ignition technique of the present invention creates expanding and contracting plasma pockets ...

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The method of plasma ignition of pulverized coal

The invention relates to energy, namely the processes kindling coal-fired boilers and stabilization of combustion (backlight) torch at them. Ignition of the pulverized coal flame is performed by generating a stream of low-temperature plasma in the plasma torch unipolar current from the grounded electrode, connected to the inverter, which provides a pulsating or intermittent current main arc ...

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Direct ignition of pulverized coal (Patent) OSTI.GOV

The direct ignition of pulverized coal in accordance with the present invention contemplates the delivery of a dense phase coal/air stream to an ignition zone where it receives ignition energy and the thus ignited mixture is thereafter contained in a recirculation region until the flame becomes self-sustaining.

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US4241673A - Direct ignition of pulverized coal -

Pulverized coal is ignited, to furnish energy for warm-up or low load operation of a coal burning furnace, by a technique which does not require the combustion of significant quantities of liquid or gaseous fuels. The direct ignition of pulverized coal in accordance with the present invention contemplates the delivery of a dense phase coal/air stream to an ignition zone where it receives ...

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Plasma Technology for Enhancement of Pulverized Coal ...

2011-4-23  Plasma Technology for Enhancement of Pulverized Coal Ignition and Combustion. V.E. Messerle*, A.B. Ustimenko**, E.I. Karpenko*** * Research Enterprise “NTO Plasmotekhnika” Ltd., Almaty, Kazakhstan, ** Research Institute of Experimental and Theoretical Physics, Almaty, Kazakhstan, *** Applied Centre of Plasma-Power Technologies of Russian J.S.Co. “UPS of Russia”, Gusinoozersk, R

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Mathematical Modelling of the Pulverised Coal

2004-9-22  pulverised coal and air mixture is diverted from the main flow and heated by a low-temperature air plasma flame [1]. The plasma flame, as a heat source and oxidant, provides a ... Ignition, Combustion, and Gasification of the Pulverized Coal Fuel in the Electric Arc

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Coal Pulverization System: Explosion Prevention and ...

2018-10-2  Heated air enters the dryer from the left end and exits from the other end and brings the vapor extracted from the coal particles. A primary and a secondary bag filters are used to remove coal particles in air. In the cooling condenser, vapor is removed from air. Then cold air is heated by an electrical heater and enters the dryer again.

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Plasma assisted power coal combustion in the furnace

2014-6-15  Pulverized coal flame ignition was observed at the exit of the PFS in the cold furnace of the boiler when the dust concentration in the air–coal mixture achieved 0.5–0.7 kg/kg . Immediately after the ignition, measured with the aid of infrared pyrometer through inspection window temperature flames have been registered as 700–800 °C and ...

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(PDF) Plasma-Supported Coal Combustion in Boiler

pulverized coal for ignition and combustion in the furnace of a ... where the fuel mixture is heated, coal. ... ac/50 Hz plasma torch operating with air. The transient behavior of the arc is ...

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Chemical Technology - an overview ScienceDirect

The plasma ignition technology is based on the plasma-assisted thermochemical preparation of coal for combustion, i.e., the heating of an air–fuel mixture (pulverized coal+air) by arc plasma to the temperature corresponding to the release of coal volatiles and partial gasification of the coke residue.

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The method of plasma ignition of pulverized coal

The invention relates to energy, namely the processes kindling coal-fired boilers and stabilization of combustion (backlight) torch at them. Ignition of the pulverized coal flame is performed by generating a stream of low-temperature plasma in the plasma torch unipolar current from the grounded electrode, connected to the inverter, which provides a pulsating or intermittent current main arc ...

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NUMERICAL MODELING OF LIGHTING PROCESS IN

We numerically model the process of aeromixture ignition in a pulverized-coal burner by a central axysymmetric jet of air that is heated in an electrical arc plasma generator up to ~ 5000 K. Our aim is to investigate the process of coal particle ignition in the flow and establish the conditions under which the independent combustion of pulverizedcoal mixture occurs.

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NUMERICAL MODELING OF LIGHTING PROCESS IN

We numerically model the process of aeromixture ignition in a pulverized-coal burner by a central axysymmetric jet of air that is heated in an electrical arc plasma generator up to ~ 5000 K. Our aim is to investigate the process of coal particle ignition in the flow and establish the conditions under which the independent combustion of ...

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Mathematical Modelling of the Pulverised Coal

2004-9-22  pulverised coal and air mixture is diverted from the main flow and heated by a low-temperature air plasma flame [1]. The plasma flame, as a heat source and oxidant, provides a ... Ignition, Combustion, and Gasification of the Pulverized Coal Fuel in the Electric Arc

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LABORATORY AND INDUSTRIAL STUDIES OF GAS COAL

2020-12-4  One of the modern technologies is the use of a direct current plasmatron for ignition and stabilization of the pulverized coal flame [9]. This technology is based on heating the flow of a pulverized-coal mixture by a high temperature plasma arc at oxygen deficiency to the tem-perature exceeding the self-ignition temperature of this coal [10].

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Coal Pulverization System: Explosion Prevention and ...

2018-10-2  Heated air enters the dryer from the left end and exits from the other end and brings the vapor extracted from the coal particles. A primary and a secondary bag filters are used to remove coal particles in air. In the cooling condenser, vapor is removed from air. Then cold air is heated by an electrical heater and enters the dryer again.

Read More
Plasma assisted power coal combustion in the furnace

2014-6-15  Pulverized coal flame ignition was observed at the exit of the PFS in the cold furnace of the boiler when the dust concentration in the air–coal mixture achieved 0.5–0.7 kg/kg . Immediately after the ignition, measured with the aid of infrared pyrometer through inspection window temperature flames have been registered as 700–800 °C and ...

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Plasma ignition of dust-coal flame

a pulverized coal flame. This paper presents the results of numerical experiments on ignition of pulverized coal in PFS. PFS is designed for fuel oil-free start-up of the boilers and stabilization of pulverized coal flame, and represents a pulverized coal burner equipped with

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Chemical Technology - an overview ScienceDirect

The plasma ignition technology is based on the plasma-assisted thermochemical preparation of coal for combustion, i.e., the heating of an air–fuel mixture (pulverized coal+air) by arc plasma to the temperature corresponding to the release of coal volatiles and partial gasification of the coke residue.

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2013 Hitachi Latest Technology for Coal Firing Power Plants

2014-2-21  secondary air jets to the outside along the Baffle Plate, which is equipped on the Flame Stabilizing Ring. As hot gas stagnates in the recirculation zone, pulverized coal is rapidly heated and this enhances ignition. (2) Concentration of pulverized coal Concentration of pulverized coal is pivotal to ignition enhancement.

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