Device and method for blending waste plastics by residual oil hydrogenation device

A technology for hydrogenation of residual oil and waste plastics, applied in the petroleum industry, processing hydrocarbon oil, preparation of liquid hydrocarbon mixtures, etc., can solve the problems of wasting plastic recycling value, environmental pollution, occupying valuable land resources, etc., and achieve the reduction of metal content and sulfur and nitrogen content, less investment in equipment, and prolonged catalyst life

Inactive Publication Date: 2021-03-16
XUZHOU UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Direct recycling is the method with the highest added value of plastic waste, but it has higher requirements on the type and classification of plastics; although the deep landfill method is easy to implement, its pollution to the environment will continue for a long time and occupy a large area of ​​precious land Resources waste the recycling value of plastics; thermal degradation converts high-molecular polymers into small molecular substances by isolating air and heating dry distillation, which can be used to produce products such as gasoline and diesel; incineration directly burns plastics and uses the heat released by them to generate electricity or produce steam

Method used

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  • Device and method for blending waste plastics by residual oil hydrogenation device
  • Device and method for blending waste plastics by residual oil hydrogenation device
  • Device and method for blending waste plastics by residual oil hydrogenation device

Examples

Experimental program
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Effect test

Embodiment 1

[0043] In this example, a fixed bed reactor is used for hydrocracking of residual oil-waste plastic mixed raw material. The waste plastic is a mixture of polyethylene (PE) and polypropylene (PP). The mass proportion of PE and PP in waste plastics is 60% and 40%, respectively. The main process parameters are shown in Table 1.

[0044] Process flow chart see figure 1 , figure 1 Medium logistics: S1-new hydrogen, S2-solid waste plastic, S3-melted waste plastic, S4-fresh residue, S5-residue plastic mixture, S6-filtered residue plastic mixture, S7-hydrogen mixed residue plastic mixture , S8-hydrogenation reaction effluent, S9-deoxygenated water, S10-water injection reaction effluent, S11-cold high fraction tank top gas, S12-acid sewage, S13-cold high fraction tank bottom oil, S14-cold low fraction Tank Top Gas, S15-Cold Low Fraction Tank Bottom Oil, S16-Mixed Tank Bottom Oil, S17-Fuel Gas and Wide Distillate Gasoline, S18-Middle Distillate Oil, S19-Broad Distillate Residue, S20-E...

Embodiment 2

[0050] In this example, a fluidized bed reactor is used to hydrocrack the residual oil-waste plastic mixed raw material. The waste plastics are polyethylene (PE), polypropylene (PP), polyvinyl alcohol (PVA), polymethyl methacrylate ( PMMA) and polyvinyl chloride (PVC), the residual oil is vacuum residual oil, waste plastics accounted for 13.0% of raw materials, and the mass proportions of PE, PP, PVA, PMMA and PVC in waste plastics were 30.5%, 30.5%, 26.3%, 19.2%, 23.1% and 0.9%, the main process parameters are shown in Table 2.

[0051] figure 2 It is another schematic flow chart of the method of the present invention.

[0052] The logistics include: S1-new hydrogen, S2-solid waste plastic, S3-melted waste plastic, S4-fresh residue, S5-residue plastic mixture, S7-hydrogen mixed residue plastic mixture, S8-hydrogenation reaction effluent, S9-deoxygenated water, S10-water injection reaction effluent, S11-cold high fraction tank top gas, S12-acid sewage, S13-cold high fractio...

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Abstract

The invention discloses a device and a method for blending waste plastics by a residual oil hydrogenation device, and belongs to the technical field of petrochemical engineering and environmental protection. On the basis of an original hydrogenation process, residual oil and waste plastic which is molten and heated to a molten state by waste plastic are mixed and heated by utilizing an existing residual oil hydrogenation device of an oil refinery and then subjected to hydrogenation reaction to be refined into a petrochemical product, so that comprehensive utilization of plastic resources is realized. The method not only can improve the environmental condition, but also can save the equipment investment cost, improve the raw material conversion rate, increase the light component product yield, reduce the hydrogen consumption, reduce coking and prolong the service life of the catalyst, can flexibly adjust the blending proportion of residual oil and waste plastic, and has higher economicbenefits.

Description

technical field [0001] The invention relates to a device and method for recycling and treating waste plastics by using existing petrochemical devices, belonging to the technical fields of petrochemical and environmental protection. Background technique [0002] Currently, plastic waste pollution is endangering the environment and human health. Most plastics do not readily degrade naturally and need to be disposed of artificially. The general methods of dealing with refractory waste plastics are direct recycling, deep landfill, thermal degradation and incineration. Direct recycling is the method with the highest added value of plastic waste, but it has higher requirements on the type and classification of plastics; although the deep landfill method is easy to implement, its pollution to the environment will continue for a long time and occupy a large area of ​​precious land Resources waste the recycling value of plastics; thermal degradation converts high-molecular polymers...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G1/10C10G1/08C10G1/06C10G49/00
CPCC10G1/06C10G1/08C10G1/10C10G49/00
Inventor 何昌春王鹏葛奉娟田林赵伟婷张娜
Owner XUZHOU UNIV OF TECH
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