Preparation technique and apparatus of waste plastic pyrolyzed oil and application of waste plastic pyrolyzed oil as diesel fuels

Abstract

The invention discloses a preparation technique and apparatus of waste plastic pyrolyzed oil and application of waste plastic pyrolyzed oil as diesel fuels. Waste plastics are crushed; the crushed plastics are conveyed to a high-temperature pyrolytic unit in anoxic environment for the purpose of high-temperature pyrolysis; separating is performed to obtain waste plastic pyrolyzed oil; the waste plastic pyrolyzed oil and diesel oil are mixed in a ratio of 1:(1-4). The facts are known according to burning performance and emission characteristics in diesel engine operation that with 100% PPO (plastic pyrolyzed oil) under load of higher than 75%, 90% PPO under the load of higher than 50% and PPO blend of low content under all negative load conditions, an engine can run stably and reliably; under long-term operation with PPO operating under 80-90% engine load in the blend ratio of 60-70%, optimal engine performance and emission indexes can be attained.

Description

technical field [0001] The invention belongs to the technical field of environmental protection and energy utilization, and in particular relates to a preparation process and device of waste plastic pyrolysis oil and its application as diesel engine fuel. Background technique [0002] In recent years, plastic production has exploded, reaching 129 million tons per year. Although many environmentally friendly methods have been developed to recycle waste plastics, millions of tons of waste plastics are still dumped into landfills or incinerated every day, causing environmental damage. heavily polluted. Waste plastics are abundant resources, and converting waste plastics into fuels is a promising alternative energy source, which can be obtained through traditional refining processes such as pyrolysis, gasification, hydrocracking, and catalytic cracking. Among them, the pyrolysis process is a thermal degradation process that occurs in the absence of oxygen. Through the pyrolysis...

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Problems solved by technology

[0003] Due to the different types of plastic raw materials and the different quality of fuel produced in the pyrolysis process, so far there are few studies on the application of plastic pyrolysis products in diesel engines. Researchers have focused on the mixing of plastic pyrolysis oil and diesel in single-cylinder diesel engines. In larger diesel engines, J.Pratoomyod and others have conducted research on the mixed use of plastic pyrolysis oil and diesel. The diesel engine can withstand a medium mixing rate of plastic pyrolysis oil and diesel, but there is no research on the combustion performance. Analysis related reports

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