Sodium-based dry desulfurization and desulfurization by-product recycling device

Abstract

The invention discloses a sodium-based dry desulfurization and desulfurization by-product recycling device, including a smoke inlet, the other end of the smoke inlet is connected to an electrostatic precipitator, the other side of the electrostatic precipitator is connected to a high-temperature waste heat boiler through a pipeline, and the high-temperature waste heat The other end of the boiler is connected to the desulfurization reactor through a pipeline. The first fan is installed on the corridor between the high-temperature waste heat boiler and the desulfurization reactor. There is no top seat on the desulfurization reactor, and the side of the top seat near the first fan is installed. There is a first injection pipe, a second injection pipe is provided in the middle of the front side wall of the desulfurization reactor, a third injection pipe is provided in the middle of the rear side wall of the desulfurization reactor, the first injection pipe, the second injection pipe and the third injection pipe All of them include auxiliary feed ports. The three auxiliary feed ports are connected to the feed pipe through hoses and four-way valves. The other end of the feed pipe is connected to the grinder. The other end of the grinder is provided with a feed port. An upper horizontal groove is arranged below the seat, and two first recovery plates are installed in the upper horizontal groove.

Description

technical field [0001] The invention relates to the field of flue gas desulfurization, in particular to a sodium-based dry desulfurization and desulfurization by-product reuse device. Background technique [0002] At present, the wet method accounts for about 90% of the domestic flue gas environmental protection equipment. The desulfurizer of wet desulfurization technology is mainly lime. Although the price is relatively cheap, the desulfurizer only accounts for about 20% of the entire desulfurization process, and the water cost is about 20%. It accounts for 20% of the cost, and the electricity cost accounts for about 60% of the cost. It wastes water and electricity, causing a serious waste of resources. Moreover, the heat of the flue gas at about 150 ° C ~ 180 ° C from the bag filter is all wasted, which further aggravates the resources. waste. [0003] Wet desulfurization is prone to produce sulfuric acid, which will corrode the boiler and the tail end of the boiler, form...

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Problems solved by technology

[0002] At present, the wet method accounts for about 90% of the flue gas environmental protection equipment in China. The desulfurizer of the wet desulfurization technology is mainly lime. Although the price is relatively cheap, the desulfurizer only accounts for about 20% of the entire desulfurization process, and the water cost is about Accounting for 20% of the cost, electricity accounted for about 60% of the cost, wasting water and electricity, resulting in a serious waste of resources, and all the heat of the flue gas from the bag filter at about 150 ° C ~ 180 ° C was wasted, which further aggravated the waste of resources. waste

[0003] Wet desulfurization is easy to produce sulfuric acid, which will corrode the boiler and the tail end of the boiler, form scaling and blockage, and reduce the service life of the equipment. In line with the national sustainable development strategy

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