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Technology and system for removing dust and sulfur by using coal ash

A technology of desulfurization process and desulfurization system, which is applied in the application field of desulfurization of sulfur dioxide in flue gas of small and medium-sized industrial pulverized coal boilers, can solve the problem of no good solution for treatment and comprehensive recycling, and achieve comprehensive recycling full and technological process concise effect

Inactive Publication Date: 2014-02-26
JINJIANG MEICHUANG ENVIRONMENTAL PROTECTION EQUIP
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Problems solved by technology

How to deal with the fly ash produced after combustion and how to achieve effective comprehensive recycling is extremely critical in industrial production. At present, fly ash is mainly used as an admixture for concrete and in the field of red brick production. In the field of processing and comprehensive recycling There has been no good solution

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  • Technology and system for removing dust and sulfur by using coal ash

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Embodiment Construction

[0032] The present case will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0033] A process for dust removal and desulfurization using fly ash mainly includes the following steps:

[0034] 1) Introduce the flue gas with fly ash after combustion into the cyclone dust collector. The fly ash is mainly composed of glass microspheres, spongy porous particles and calcium oxide powder;

[0035] 2) The glass microbead crystals contained in the flue gas and the adsorbed SO by the cyclone dust collector 2 The sponge-like porous particles are separated from the flue gas, and the fly ash contained in the flue gas sent out of the cyclone dust collector is mainly calcium oxide powder and some light spongy particles;

[0036] 3) The flue gas sent from the cyclone dust collector is sent to the desulfurization tower. In the desulfurization tower, the calcium oxide powder and some light spongy particles have physical and chemical...

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Abstract

The invention discloses a technology for removing dust and sulfur by using coal ash. The technology mainly comprises the following steps: (1) leading flue gas with the coal ash, which is generated after burning, into a cyclone dust collector, wherein the coal ash mainly comprises glass bead bodies, spongy porous particles and calcium oxide powder; (2) separating the glass bead bodies and the spongy porous particles adsorbing SO2, which are contained in the flue gas, from the flue gas by using the cyclone dust collector; and (3) feeding the flue gas sent out from the cyclone dust collector into a desulfurizing tower, so that the flue gas and a water circulating liquid containing a surface active agent are subjected to physical and chemical reactions so as to realize the removal of sulfur in the flue gas. The system for removing dust and sulfur by using coal ash comprises the cyclone dust collector, the desulfurizing tower and a circulating pool. The removal of sulfur in the flue gas is realized by using activating oxides contained in the flue gas through the related physical and chemical reactions, so that the up-to-standard release of the treated clean flue gas is realized. The whole technological process is concise, extremely reasonable and optimal; and the desulfurized coal ash can be reused, so that the comprehensive cyclic utilization of the coal ash is realized, and the utility value of the coal ash is fully exerted.

Description

technical field [0001] The invention relates to the technical field of flue gas desulfurization of pulverized coal combustion, and specifically refers to a dust removal and desulfurization process using fly ash and a system thereof, which are suitable for desulfurization of sulfur dioxide in flue gas of small and medium-sized industrial pulverized coal boilers. Background technique [0002] Pulverized coal industrial boiler is a new type of furnace developed in my country in recent years, and fly ash is the main solid waste discharged from pulverized coal industrial boiler. With the continuous development of industry, the technology of pulverized coal industrial boilers has been continuously matured, and has the advantages of fast start-up, wide load adjustment range, high degree of automation and low energy consumption, and has been put into use in industrial and civil fields more and more. How to deal with the fly ash produced after combustion and how to achieve effective ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/80B01D53/50B01D45/12B09B3/00
Inventor 赵长兴
Owner JINJIANG MEICHUANG ENVIRONMENTAL PROTECTION EQUIP
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