Gas-material separation type flue gas diversion distribution device

Abstract

The invention relates to a gas-material separation type flue gas diversion distribution device, which comprises a flue gas diversion section, a gas flow stabilizing section, a flue gas distribution section and a granular coal collection section, wherein the flue gas diversion section comprises a flue gas diversion plate and a flue gas conveying section; the flue gas diversion plate is arranged ata flue gas inlet pipe and is arranged in an acclivitous mode along the flowing direction of flue gas; the granular coal collection section has an ash bin structure, and a granular coal collection binis positioned at the bottom of the device; the flue gas conveying section and the gas flow stabilizing section are arranged on the upper part of the granular coal collection section, and the flue gasconveying section is connected with the flue gas diversion plate and the gas flow stabilizing section; the gas flow stabilizing section is provided with a plurality of grid plates for stabilizing gasflow and balancing pressure; the flue gas distribution section is arranged on the upper part of the gas flow stabilizing section and is provided with a plurality of air distributing chambers; and each air distributing chamber is provided with a flue gas distribution regulation valve bank for regulating the pressure and flow rate of each air distributing chamber. The gas-material separation type flue gas diversion distribution device has the advantages that the gas flow can be distributed uniformly, granular coal materials mixed in the conveyed gas flow can be separated from the gas flow quickly, and the separated coal materials are discharged quickly by closed ash discharging equipment.

Description

technical field [0001] The invention relates to a gas material separation type flue gas diversion distribution device, which is mainly used in the coal humidity control process system to realize the uniform distribution of the air flow used for drying the wet coal material on the fluidized bed, and can also transfer the gas from the The particulate coal that falls back from the fluidized bed to the flue gas conveying section is effectively separated from the air flow to avoid damage to the system fan. The device can also be used in other processes that have higher requirements on air distribution. Background technique [0002] Coal humidity control technology using coke oven flue gas as heat source generally uses the working principle of fluidized bed to make hot flue gas and wet raw coal directly contact and exchange heat in the coal humidity control machine to dry the coal material. The coal humidity control system with fluidized bed as coal drying equipment has the follo...

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Problems solved by technology

[0004] 2. Raw coal has a high moisture content, up to 14%

Since the air conveying section at the bottom is connected to the outlet of the fan, the existence of these particulate coal materials will inevitably cause safety hazards to the operation of the fan

[0008] The uneven distribution of the gas field in the fluidized bed can easily lead to channel flow and turbulent flow in the fluidized bed, resulting in a dead bed or "plug flow" in the fluidized bed, making the fluidized bed unable to work or affecting the coal drying effect and affecting the equipment. service life

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