Method for synergistically pyrolyzing oily sludge and aluminum slag
A technology of aluminum slag and sludge, applied in chemical instruments and methods, pyrolysis sludge, nanotechnology for materials and surface science, etc., can solve the problem of toxic substances entering the soil, affecting people's food safety, health and safety, Pollution of crops and other issues, to achieve high energy saving and environmental protection benefits, improve efficiency, and improve pyrolysis efficiency
Pending Publication Date: 2021-12-28
NANJING WONDUX ENVIRONMENTAL PROTECTION TECH CO LTD
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Problems solved by technology
[0002] Aluminum slag and oily sludge are solid wastes produced by petrochemical, metallurgical and other energy and chemical industries. Long-term open-air stacking or landfills will cause heavy metal elements and toxic substances in solid waste to enter the soil and pollute crops. collection, ultimately affecting people's food safety, health and safety
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Embodiment
[0022] like figure 1 As shown, a process flow diagram of a method for the synergistic pyrolysis of oily sludge and aluminum slag.
[0023] This embodiment is the synergistic pyrolysis of oily sludge and aluminum slag, and the aluminum slag acts as a catalyst in the catalytic cracking reaction of oily sludge, which greatly improves the rate of the pyrolysis reaction. The chloride ion in the aluminum slag is extracted by the alkali fusion method, and then the aluminum hydroxide colloid is prepared by ammonium bicarbonate, and the product is further purified by drying, acid washing, ultrasonic cleaning, etc. The specific process is divided into five steps: material crushing, component compounding, ventilation and exhaust, high-temperature pyrolysis, condensation separation, and residue recycling. The specific steps are as follows.
[0024] The oil content of the oily sludge in this embodiment is 30%, the water content is 28%, and the solid content is 35%. Take the oily sludge a...
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Abstract
The invention provides a method for synergistically pyrolyzing oily sludge and aluminum slag. The method comprises six steps of material crushing, component compounding, ventilation and exhausting, high-temperature pyrolysis, condensation separation and residue resource utilization. According to the invention, the pyrolysis efficiency of the oily sludge is improved by utilizing the catalytic action of the aluminum slag, effective components in the oily sludge and the aluminum slag are fully excavated, and activated carbon nanometer aluminum oxide is prepared by using activated pyrolysis residues. According to the method, the synergistic pyrolysis treatment of the oily sludge and the aluminum slag is realized, the pyrolysis efficiency of the oily sludge and the resource utilization efficiency of the aluminum slag are improved, the synergistic pyrolysis treatment of the oily sludge and the aluminum slag is realized, and the method has wide application prospects.
Description
technical field [0001] The invention belongs to the field of solid waste disposal, and in particular relates to a method for synergistic pyrolysis of oily sludge and aluminum slag. Background technique [0002] Aluminum slag and oily sludge are solid wastes produced by energy and chemical industries such as petrochemical and metallurgy. Long-term open storage or landfill will cause heavy metal elements and toxic substances in solid wastes to enter the soil and pollute crops. It will ultimately affect the food safety and health safety of the people. [0003] Due to the different sources, sludge components and properties of oily sludge, the disposal methods of oily sludge are also different. Among them, oily sludge pyrolysis is a chemical decomposition thermal reaction process in which oily sludge is decomposed into gas, liquid and solid three phases in an inert gas atmosphere or in a vacuum state. The use of pyrolysis to dispose of oily sludge can realize resource utilizati...
Claims
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IPC IPC(8): C02F11/10C01F7/02C01B32/324B82Y40/00B82Y30/00
CPCC02F11/10C01F7/02C01B32/324B82Y40/00B82Y30/00C01P2004/80Y02W10/40
Inventor 赵慧慧刘军戴昕郭燕冉根柱潘天琪李钦钦刘淦源洪有成
Owner NANJING WONDUX ENVIRONMENTAL PROTECTION TECH CO LTD