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A plasma and hazardous waste technology, applied in solid waste removal, chemical instruments and methods, transportation and packaging, etc., can solve problems such as environmental pollution, achieve low permeability, high waste removal efficiency, and dioxin production. small amount of effect
Inactive Publication Date: 2020-12-25
SHANGHAI CANZHOU ENVIRONMENTAL ENG
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However, the residue and fly ash produced in the process of hazardous waste incineration (generally, the residue and fly ash are collectively referred to as ash, accounting for about 20-30% of the treatment capacity), contain high concentrations of heavy metals and dioxins and other harmful substances. Failure to carry out harmless treatment again will cause serious environmental pollution
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[0014] see figure 1 As shown, the technical solution adopted in this specific embodiment is: a hazardous waste plasma melting treatment system, which includes a plasma melting furnace 1, a crusher 2, a granulator 3, an incineration slag bin 4, a fly ash bin 5, a mixing bin Material conveyor 6, material feeding buffer bin 7, slag removal machine 8, flue gas regulator 9, rotary kiln incinerator secondary combustion chamber 10, plasma torch 11; it uses plasma melting furnace for hazardous waste incineration treatment, mainly processing materials For incineration residue, fly ash and other materials, auxiliary materials (flux) are mainly cullet and lime;
[0015] Its technological process steps are: a. The incineration residue is removed through the water-sealed slag discharger, and then lifted to the crusher by the hoist for crushing pretreatment. The particle size after crushing is generally below 50mm, and the crushed residue enters the slag buffer warehouse storage; b. The ma...
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Abstract
The invention discloses a hazardous waste plasma melting treatment system, and relates to the technical field of hazardous waste treatment. The system comprises a plasma melting furnace, a crusher, agranulator, an incineration residue bin, a fly ash particle bin, a mixing conveyor, a feeding buffer bin, a residue salvaging machine, a flue gas regulator, a rotary kiln incinerator secondary combustion chamber and a plasma torch. The plasma melting furnace is adopted for hazardous waste incineration treatment, incineration residues, fly ash and other materials serve as main treatment materials,and cullet and lime serve as auxiliary materials (fluxing agents). After the technical scheme is adopted, the method has the beneficial effects that a, toxic, harmful, dangerous and non-dangerous waste, including organic, inorganic, gaseous, liquid and solid waste, can be treated; b, the generation amount of dioxin in the treatment process is extremely small; c, treated furnace slag is non-toxic and harmless vitrified slag, is an inert substance, is extremely low in permeability and can be used as a roadbed material; and d, the waste breaking efficiency is up to 99% or above.
Description
technical field [0001] The invention relates to the technical field of hazardous waste treatment, in particular to a hazardous waste plasma melting treatment system. Background technique [0002] Incineration treatment of hazardous waste has become one of the main methods for treating hazardous waste at home and abroad because of its significant volume reduction and heat recovery. However, the residue and fly ash produced in the process of hazardous waste incineration (generally, the residue and fly ash are collectively referred to as ash, accounting for about 20-30% of the treatment capacity), contain high concentrations of heavy metals and dioxins and other harmful substances. Failure to carry out harmless treatment again will cause serious environmental pollution. Statistics show that the toxic equivalent (I-TEQ) of PCDDs (polychlorinated dibenzodioxins) and PCDFs (polychlorinated dibenzofurans) in ash is in the range of 1 to 1040 ng / g and 1.4 to 280 ng / g, respectively. ...
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