Concentration, atomization and evaporation drying equipment for desulfurization wastewater
A technology for desulfurization wastewater and equipment, which is applied in gaseous discharge wastewater treatment, water/sewage treatment, chemical instruments and methods, etc. The effect of moisture content
Pending Publication Date: 2020-07-03
成都三顶环保科技有限公司 +1
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Problems solved by technology
Existing equipment cannot comprehensively treat desulfurization wastewater, and cannot achieve zero discharge
Method used
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Embodiment
[0031] This embodiment provides a kind of concentration and evaporation equipment 10 for desulfurization waste water, refer to figure 1 As shown, it includes a plurality of separators 100, a spray drying tower 200, and a flue heat exchanger 300 connected in series in sequence.
[0032] Such as figure 1As shown, each separator 100 is provided with a corresponding heat exchanger 110, and the bottom of each separator 100 is provided with a bypass liquid outlet pipe 111 and a bypass liquid return pipe 112, and the bypass liquid outlet pipe 111 is forced to The circulation pump 113 communicates with the cold-side inlet of the heat exchanger 110 , and the bypass return pipe 112 communicates with the cold-side outlet of the heat exchanger 110 . It should be noted that the hot side and the cold side of the heat exchanger 110 are distinguished according to the initial temperature of the medium participating in the heat exchange. Inside the heat exchanger 110 , the hot side transfers h...
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The invention discloses concentration, atomization and evaporation drying equipment for desulfurization wastewater, and relates to the technical field of industrial wastewater treatment. The equipmentcomprises a plurality of concentration separators, a rotary atomizer, a spray drying tower and a flue heat exchanger, which are sequentially connected in series. The plurality of concentration separators can be used for effectively concentrating desulfurization wastewater, reducing the water content of the desulfurization wastewater, improving the subsequent evaporation drying effect and recovering steam condensate water generated in the concentration process. The concentrated desulfurization wastewater is sent into the spray drying tower and evaporated to dryness through high-temperature flue gas, so that part of solid components in the desulfurization wastewater are dehydrated and precipitated as ash, which is subjected to a centralized treatment, and the other part of solid componentsis subjected to an electric precipitation capture treatment in a power plant along with the flue gas, so that zero emission of desulfurization wastewater is truly realized. Meanwhile, in the process,the high-temperature flue gas is firstly utilized by the spray drying tower to evaporate and dry the desulfurization wastewater, and the tail flue gas is subjected to continuous heat exchange throughthe flue heat exchanger and a one-effect heat exchanger, so that the waste heat is utilized in the heating of the separators, and the effects of environmental protection and energy conservation are achieved.
Description
technical field [0001] The invention relates to the technical field of industrial wastewater treatment, in particular to a concentration and evaporation equipment for desulfurization wastewater. Background technique [0002] Desulfurization wastewater is mainly produced by a series of chemical reactions of various elements in coal combustion under high temperature conditions in the furnace. Coal combustion at high temperature generates a variety of compounds, some of which are discharged from the furnace with the slag, and the other part enters the absorption tower of the desulfurization device with the flue gas, dissolves in the absorption slurry and is continuously concentrated in the absorption slurry circulation system, eventually leading to the salt content in the desulfurization wastewater very high. Most desulfurization wastewater has the following characteristics: many components, large changes in water quality: high salt content, high suspended solids content, stro...
Claims
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Patent Timeline
Login to View More IPC IPC(8): C02F1/04C02F1/12C02F1/16C02F103/18
CPCC02F1/048C02F1/12C02F1/043C02F1/16C02F2103/18
Inventor 於承志张庆文王丽娜王亮刘简杨俊松
Owner 成都三顶环保科技有限公司