A method of preparing high-efficiency adsorption material from paraffin oil decolorization waste soil and its application

Abstract

The invention discloses a method for preparing high-efficiency adsorption materials from paraffin oil decolorization waste soil and an application thereof, belonging to the field of adsorbent materials. In the present invention, paraffin oil decolorization waste soil is placed in a tube furnace, and the temperature is raised to 450°C to 650°C at a heating rate of 10°C / min to 20°C / min in a nitrogen atmosphere, and the temperature is kept for 1 to 4 hours to obtain Clay / carbon composite material: quickly add the obtained clay / carbon composite material into the ammonium phosphate solution to extract and cool, after impregnation, filter, put the obtained filter cake in a nitrogen atmosphere, and keep it warm at 400°C-500°C for 1-2 Hours, the clay / carbon porous adsorption material is prepared. The invention uses the residual coke and asphaltene impurities in paraffin oil decolorization waste clay as carbon source to prepare clay / carbon composite adsorption material, which not only solves the pollution problem of solid waste decolorization waste soil, but also prepares the adsorption material that is beneficial to the waste water containing Physical and chemical adsorption of nitrogen and phosphorus compounds.

Description

technical field [0001] The invention belongs to the high-value application field of industrial solid waste resource-paraffin oil decolorization waste soil, and particularly relates to a preparation method of a porous clay / carbon high-efficiency adsorption material. Background technique [0002] Activated clay refining is a mature process for treating crude paraffin oil. The process is to adsorb and remove impurities such as coke and asphaltene in crude paraffin oil (the main reason affecting the color of paraffin). However, there is a problem of solid waste pollution in the waste white clay refined from paraffin. For example, petrochemical companies such as Maoming, Nanyang, Jingmen and Shanghai Gaoqiao all have the problem of outsourcing the treatment of white clay solid waste, and the treatment price is about 3,000 yuan / ton, which increases the processing cost of paraffin oil accordingly. [0003] At present, the decolorized waste soil of oil factories mainly adopts landf...

AI Technical Summary

Problems solved by technology

Waste soil buried in the ground will still pollute groundwater resources, and may also produce flammable, explosive or toxic gases through decomposition, posing certain safety hazards

The incineration of waste clay will produce incompletely burned organic components and slag, which will inevitably cause secondary pollution

In addition, waste white clay requires pollution control facilities and complex testing instruments in the incineration process, and the investment and operation management costs are relatively high.

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