Feasibility Experiment Research On Treatment Of Aluminum Dross And Oily Sludge

Aluminum dross and oily sludge as the solid waste of energy chemical industry,there are a lot of such pollutants have been abandoned,every year.Heavy metals and toxic substances can penetrate into the soil,pollution crops,affect the food safety ultimately.Therefore,study of the industrialized treatment of these kinds of solid waste is imminent,and many energy chemical industry focus on it.This article in view of the above two kinds of solid waste composition designed an experiment to study the feasibility of the cooperative treatment,studied the effect of catalytic pyrolysis generate gas whith at different temperature,analysis under different conditions the change of pyrolysis products composition.The catalytic mechanism pyrolysis reaction process with aluminum dross was analyzed.And then by measuring the oily sludge loss rate under at different temperature to evaluate the composition of collected liquid product by pyrolysed from oily sludge.Aluminum dross mixture with the residue of oily sludge solid product from the pyrolysis could provide source aluminum and carbon to manufacture activated carbon loaded of nano-alumina.Explore the feasibility of the preparation of new materials activated carbon loaded of nano-alumina by experiment.The main research contents and conclusions are as follows:Oily sludge in the tube furnace at low temperature is a physical absorption process,the pyrolysis reaction will not occur and the evaporation is given priority to the whole process.After more than 350℃the pyrolysis reaction began to occur,but the reaction degree is low.After more than 650℃cracking reaction was increased significantly,the gas product was mainly consisted of hydrogen,methane,ethane,ethylene and propylene.The yield of ethylene had increased 2³ times by adding a quarter of aluminum dross into oily sludge during the process of pyrolysis.As well as,the hydrogen production has been greatly improved,and the catalytic cracking reaction complete in forty minutes.Because added the aluminum dross into the process of pyrolysis,we study the feasibility of aluminum ion extraction by alkali fusion method from aluminum dross and preparation of?-alumina using the leachate.The study found that aluminum ions leaching rate reached 100%by alkali fusion method with the aluminum dross mixed with sodium hydroxide in a ratio of1:1 heated in the muffle furnace at 650℃for half an hour,approximately.And then dripping with ammonium bicarbonate and hydrochloric acid into the leachate can be prepared aluminum hydroxide colloid,respectively.Finally,using the hydrothermal method synthesized?-Al₂O₃ with specific surface area of 201.38 m²/g,successfuly.Design orthogonal experiment to determine the optimum parameter of activation process with oily sludge pyrolysis residue.Found that residue of oily sludge pyrolysis activated in tube pyrolysis furnace at 800℃,under the condition of nitrogen atmosphere and the pyrolysis residue blended with NaOH in a ratio of 1:2.Instill ammonium bicarbonate solution into filtrate prepared for impregnation liquid of aluminum hydroxide colloid.Activated carbon loading nano-alumina prepared using multiple impregnation method and calcination method.The result shows that the specific surface area of absorbent material material decreased obviously with the more dip times,this article suggested dipping best three times.Finally,tested the capacity and the dynamics of activated carbon loading nano-alumina adsorption of Cu²⁺found that the adsorption behavior of Cu²⁺can be better described by the pseudo-second-order model than the pseudo-first-order model.The activation energy is9.9086 kJ/mol,indicates that this prcess is a physical adsorption process.By means of data fitting found that the Langmuir adsorption isotherm model better fitted...