Process and equipment for cracking and recovering waste organic petrochemicals

Abstract

The invention provides a method and a device for cracking and recovering waste petrochemicals. The device comprises a cracking reaction furnace, a filter, a first cooler, a 100-mesh filter, a second cooler, an oil gas collector, a first oil water separator, a basic cracking oil groove, a first vacuum pump, a fractionation furnace, a third cooler, a second oil water separator, a finished product oil groove, a second vacuum pump, a gas wash tower, a gas pneumatic trough and a plurality of product oil grooves, wherein the waste petrochemicals are put in a reaction furnace of the cracking reaction furnace and mixed with waste liquefied petrochemicals and initial agents according to preset ratios, the mixture is heated up to the preset temperature, and the waste petrochemicals are primarily decomposed to oil gas, and the oil gas undergoes repeated treatments of filtering, cooling, oil-water separation and fractionation, and the waste petrochemicals are cracked and rectified into different oil products.

Description

technical field [0001] The invention relates to a method and equipment for cracking and recycling waste petrochemical products, in particular to a method and equipment for recycling waste petrochemical products (including organic products such as waste plastics) by thermal cracking. Background technique [0002] Due to Taiwan's industrial development in recent years, the use of petrochemical products such as plastics and rubber has increased sharply. These waste petrochemicals after use are either discarded at will or sent to landfills. People are densely populated with limited land resources for burial, and direct incineration is likely to cause air pollution and dioxin problems. Therefore, the disposal of plastic, rubber and organic solvent waste petrochemicals often causes headaches for environmental protection agencies. [0003] Pyrolysis resource recovery technology can convert solid or liquid organic waste petrochemicals such as waste tires, waste rubber, waste petroch...

AI Technical Summary

Problems solved by technology

[0004] Since waste petrochemical products are high molecular polymers, they are polymerized by single polymer raw materials and catalysts under high pressure and low temperature conditions, so they are depolymerized in the opposite direction by thermal cracking methods to obtain chemicals with good fluidity, that is, to liquefy them Therefore, the traditional thermal cracking method must heat the waste petrochemicals to at least 400°C to complete the cracking, because the thermal conductivity of organic waste petrochemicals is very low, the heating time is very long, the processing capacity is not easy to expand, and it is relatively uneconomical

The traditional thermal cracking liquefaction technology process must first classify waste petrochemical products and shred them, and apply pressure to reduce the volume of waste petrochemical products and then press them into agglomerates, liquefy them with pressure and high temperature, and then extract Heavy oil, the disadvantage of this traditional method is low productivity and high operating costs, and only heavy oil and residues can be extracted, and it cannot be distilled at one time to provide refined oil products used by the general public, so it has not been popularized for commercial application.

Images