Electronic waste pyrolysis gas purification system and method for treating electronic waste pyrolysis gas

Abstract

The invention discloses an electronic waste pyrolysis gas purification system and a method for treating electronic waste pyrolysis gas. The purification system comprises an air cooler, an air heat exchanger, a gravity oil trap, an electric oil trap, an alkaline tower, a water wash tower and a booster fan which are sequentially connected, and pyrolysis oil storage tanks are arranged at the bottoms of the air cooler, the air heat exchanger, the gravity oil trap and the electric oil trap. According to the method for purifying the electronic waste pyrolysis gas by the system, high-boiling point pyrolysis oil is recovered by the air cooler, middle-low-boiling point pyrolysis oil is recovered by the air heat exchanger in a heat exchanging manner, large-particle pyrolysis oil is recovered by the gravity oil trap, residual pyrolysis oil is recovered by the electric oil trap, and a gas phase is washed by the aid of alkaline and water and serves as fuel gas to return a combustion system. The system is simple to operate, oil and gas of the electronic waste pyrolysis gas can be completely separated, halogen elements in the pyrolysis gas can be removed to obtain clean fuel gas, and clean resource use of the pyrolysis gas is achieved.

Description

technical field [0001] The invention relates to a flue gas purification system, in particular to an electronic waste pyrolysis gas purification system and a method for processing the electronic waste pyrolysis gas, belonging to the field of resource recovery and reuse of waste electronic and electrical products. Background technique [0002] With the continuous development of the global economy, the pressure on resources and energy is increasing, and economic transformation and industrial restructuring are becoming more and more urgent. At present, in the era of rapid development of the electronic information industry, the upgrading of electronic information products is accelerating, resulting in a large amount of electronic waste. Electronic waste is a kind of renewable resource, and the development of its recycling technology has received extensive attention from the industry. Pyrolysis technology is currently the mainstream e-waste treatment technology. Through pyrolysis...

AI Technical Summary

Problems solved by technology

The pyrolysis oil and gas mixture produced by the pyrolysis process of electronic waste contains a certain amount of halogen elements and CO 2 If it is not purified, it will not only affect its combustion performance, but also cause serious environmental problems such as dioxin pollution; in addition, the separation of oil and gas from pyrolysis oil and gas mixture is also very important. If the separation of oil and gas is not complete, Pyrolysis oil will corrode pipes and valves and instruments, seriously affecting the pyrolysis gas combustion system

Images