A desulfurization device and desulfurization method

A desulfurization device, a square technology, applied in separation methods, chemical instruments and methods, dispersed particle separation, etc., can solve the problems of poor boiler combustion stability, unfavorable implementation, impact and damage of reaction gas flow balance, etc., to avoid insufficient desulfurization efficiency, The effect of improving the gas-solid separation efficiency and reducing the ash powder escape rate
CN104548920BActive Publication Date: 2017-02-22HENAN SHENMA NYLON CHEM
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
HENAN SHENMA NYLON CHEM
Publication Date
2017-02-22

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Abstract

The invention provides a desulfurization device. The desulfurization device comprises a draught fan, a lime stone cabin, a gas storage tank and a circulating fluidized bed boiler, and is characterized in that the circulating fluidized bed boiler comprises a hearth, a material returning pipe and a square separator, wherein the upper part of the square separator is communicated with the upper part of the hearth; the lower part of the square separator is connected with the lower part of the hearth by the material returning pipe and a coal falling pipe is arranged on the hearth; the draught fan is connected with the bottom of the lime stone cabin by a heating device; the upper part of the lime stone cabin is connected with a bag dust remover and the lower end of the lime stone cabin is connected with a feeding machine by an unloading valve; the feeding machine is connected with a feeding pipe; the gas storage tank is connected with the feeding pipe and the feeding pipe is connected with the coal falling pipe. The invention further provides a desulfurization process utilizing the desulfurization device; the conveying speed of lime stones is 12m / s-14m / s and the gas-solid ratio is 1 to (3-6). The production cost of the equipment is reduced, the desulfurization effect of the circulating fluidized bed boiler is improved and the economic benefits are good.
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Description

technical field

[0001] The invention belongs to the technical field of boiler equipment, and in particular relates to a desulfurization device and a desulfurization method. Background technique

[0002] There are various coal-fired desulfurization methods for boilers. Among them, circulating fluidized bed boilers (CFB boilers for short) are one of the more mature clean combustion methods. They have good environmental protection performance and can easily achieve desulfurization in the furnace. They have developed rapidly in China. In particular, the CFB dry desulfurization device is widely used due to its advantages of small investment, low operating cost, and no secondary pollution.

[0003] At present, the separators used in the combustion technology of circulating fluidized bed boilers are mostly circular separators. The manufacturing of circular separators is difficult and costly. The requirements for the accuracy of limestone particle size are high, and the cost of indu...

Claims

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