High-efficiency energy-saving emission-reduction circulating fluid bed organic heat carrier boiler

Abstract

The invention discloses a high-efficiency energy-saving emission-reduction circulating fluid bed organic heat carrier boiler which comprises a boiler base, a coal scuttle and a heat medium circulation pump, wherein a boiler body formed by steel racks and insulation fire-resistant layers from outside to inside is arranged on the upside of the boiler base; a hearth and a flue the top parts of whichare communicated are arranged in the boiler body in parallel; a top part heating surface and a square plate radiation heating pipe bundle are arranged on the upper part of the hearth from top to bottom; a secondary wind nozzle is arranged in a clearance of coil pipes; the lower part of the hearth is provided with a grid plate, a wind cap and an equipressure wind box; the flue is sequentially provided with an outlet container, a cyclone separating device, a high-temperature convection pipe bundle, a low-temperature convection pipe bundle and an air preheater; the flue is communicated with a smoke outlet arranged on the underside through the air preheater; the cyclone separating device is communicated with the hearth by a pipeline through a back feeder; the high-temperature convection pipe bundle is communicated with the square plate radiation heating pipe bundle by a middle linkage box; the low temperature convection pipe bundle is communicated with the heat medium circulation pump; and the heating surface is communicated with a heat device by the outlet container. The invention protects the environment, saves energy and has long service life.

Description

Technical field [0001] The invention belongs to the technical field of organic heat carrier boilers, and relates to a circulating fluidized bed organic heat carrier boiler with high efficiency, energy saving and emission reduction. Background technique [0002] At present, China’s organic heat carrier boilers are mainly coal-fired and adopt layered combustion. The combustion equipment is in the form of fixed hand-burning furnaces, chain furnaces, reciprocating furnaces and vibrating furnaces. The existing technology of circulating fluidized bed boilers is in the furnace. A separator is added at the exit to collect part of the soot and return to the furnace for combustion. The boiler with this structure has a large circulating soot concentration, serious abrasion on the heating surface, low coal combustion rate, high requirements for coal types, serious environmental pollution, and dust removal. Technical problems such as high equipment investment, high operating costs, and low wa...

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Problems solved by technology

[0003] The purpose of the present invention is to solve the problems of existing organic heat carrier boilers, such as severe heating surface wear, low coal combustion rate, high coal type requirements, serious environmental pollution, high investment in dust removal equipment, high operating costs, and low utilization rate of waste heat. problem, to provide a high-efficiency, energy-saving and emission-reducing circulating fluidized bed organic heat carrier boiler to overcome the deficiencies in the prior art

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