Technology of paper-making solid waste incineration fly ash for thermoelectric flue gas desulfurization
A technology for incinerating fly ash and flue gas, which is applied in the removal of solid waste, separation of dispersed particles, chemical instruments and methods, etc., can solve problems such as resource waste and environmental pollution, achieve environmental protection, high desulfurization efficiency, and realize component utilization. Effect
Inactive Publication Date: 2017-01-04
SHANDONG HUATAI PAPER
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Problems solved by technology
However, a large amount of fly ash is still produced during the treatment process. At present, these fly ash are mainly disposed of in landfill, which not only causes environmental pollution, but also causes a waste of resources.
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[0015] A process for using papermaking solid waste incineration fly ash for thermoelectric flue gas desulfurization, and its specific steps are:
[0016] (1) Papermaking solid waste incineration fly ash is transported to the site by a sealed tanker to the storage warehouse for storage, and transported to the digestion system by the electronic screw scale at the bottom of the warehouse. The mixture of fly ash with a mass fraction of 99.95% and a heavy metal ion chelating agent with a mass fraction of 0.05% completes the digestion process in the digester and is dried at the same time. Ca(OH) made by digestion 2 The slaked lime powder is transported to the slaked lime storage silo by bucket lift, and the slaked lime powder under the slaked lime silo is sprayed into the desulfurization tower by pneumatic conveying for desulfurization reaction.
[0017] (2) Flue gas (temperature 139℃, flow 687364m 3 / h) First pass the double-chamber electric field pre-dust removal, the dust removal effi...
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The invention relates to the technical fields of environmental protection and resource utilization, in particular to a technology of paper-making solid waste incineration fly ash for thermoelectric flue gas desulfurization. According to the technology disclosed by the invention, firstly fly ash and a heavy metal chelating agent are digested, and then digestion substances and flue gas after pre-dedusting are subjected to a reaction. According to the technology disclosed by the invention, the utilization of paper-making solid waste incineration fly ash is realized, the desulfurization efficiency is as high as 93%, the environment is protected, and the component utilization of resources is realized, so that the technology can be widely popularized and used.
Description
Technical field [0001] The invention relates to the technical field of environmental protection and resource utilization, in particular to a process for using papermaking solid waste incineration fly ash for thermoelectric flue gas desulfurization. Background technique [0002] The deinking sludge and drum waste residue in the pulping and papermaking process of waste paper are generally treated by incineration, and the treatment process has realized the reduction of papermaking solid waste. However, a large amount of fly ash is still produced during the treatment process. At present, these fly ash are mainly treated by landfill, which not only causes environmental pollution, but also wastes resources. After analysis, the main component of the fly ash is CaO, which can be used for semi-dry flue gas desulfurization. Summary of the invention [0003] The process flow of the present invention is: [0004] (1) Papermaking solid waste incineration fly ash is transported to the site by a...
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IPC IPC(8): B01D53/50B01D53/68B01D53/75B01D53/83B09B3/00
CPCB01D53/75B01D53/508B01D53/685B01D53/83B01D2251/404B01D2251/604B09B3/00
Inventor 张凤山周景蓬刘燕韶李晓亮魏文光冯好伟李红艳郭启程
Owner SHANDONG HUATAI PAPER