Patent US5526758 Distribution cone for pulverized coal burners 18 Jun 1996 The inlet of the distribution half-cone is formed as a sharp edge nozzle burner including a Venturi section and a conical end-shaped rod member. .. coal concentrator and pulverized coal burner including the concentrator.
A pre-ignition conduit for a pulverized fuel nozzle includes a duct having first and second opposing end portions, the first end portion configured to face an outlet of an igniter. The conduit further includes a cone-shaped concentrator for collecting and forwarding pulverized fuel into the duct for ignition, the cone-shaped concentrator being secured to the first end portion and located
A pulverized coal concentrator for a pulverized coal burner, the concentrator is fixedly arranged inside the pulverized coal burner and comprises a front part ( 102 ) and a rear part ( 101 ), wherein the front part ( 1020 is designed as a bowl-shaped structure, for guiding and concentrating an air-pulverized coal flow, and the rear part ( 101 ) is designed as a cylinder-shaped structure, for
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Oct 15, 2013· A pulverized coal concentrator for a pulverized coal burner, the concentrator is fixedly arranged inside the pulverized coal burner and comprises a front part ( 102 ) and a rear part ( 101 ) Pulverized coal concentrator and pulverized coal burner including the concentrator Yantai Longyuan Power Technology Co., Ltd.
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SUBSTANCE: pulverised-coal concentrator for a pulverised-coal burner, which is rigidly installed inside it, includes front part (102) and rear part (101). Front part (102) is made in the form of a bowl-shaped structure providing direction and concentration of a pulverised- coal-air flow.
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In this paper, the effect of a coal concentrator on two-phase velocities, turbulent kinetic energy and particle concentration in a cold model of swirl burner are measured using a phase-Doppler particle anemometer (PDPA). The NO formation in swirling coal combustion is
Latest Low-NOx Combustion Technology for Pulverized-coal,Latest Low-NOx Combustion Technology for Pulverized-coal-fired Boilers 190 stability through better flame propagation The PC (pulverized coal) concentrator has the shape of an artillery shell and is installed in the fuel nozzle of the HT-NR3 burner The pulverized coal and primary air both tend to move closer to the inner wall of the fuel
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Latest Low-NOx Combustion Technology for Pulverized-coal-fired Boilers 190 stability through better flame propagation. The PC (pulverized coal) concentrator has the shape of an artillery shell and is installed in the fuel nozzle of the HT-NR3 burner. The pulverized coal and primary air both tend to move closer to the inner wall of the fuel
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section. Fig. 2 shows three cases: Case 1—a cone-shaped concentrator is placed in the central tube; Case 2—a blocking is placed in the annular space; the primary-air with pulverized coal is supplied from the central tube; Case 3—no blocking and no concentrator. The geomet-rical sizes and inlet-ﬂow parameters are given in Tables 1 and 2. 3.
Influence of division cone angles between the fuel-rich and the fuel-lean ducts on gas–particle flow and combustion near swirl burners
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The results show that the specially-designed swirl burner structures including the pulverized coal concentrator, flame stabilizing ring and baffle plate create an ignition region of high gas temperature, proper oxygen concentration and high pulverized coal concentration near the annular recirculation zone at the burner outlet for flame stability.
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The air mixes with and dries coal in the grinding zone and carries pulverized coal particles upward into a classifier. Fine pulverized coal exits the outlet section through multiple discharge coal pipes leading to the burners, while oversized coal particles are rejected and
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