Pyrolytic process and device capable of directly transforming straws into petrol and diesel

Abstract

The invention relates to pyrolytic process and device capable of directly transforming straws into petrol and diesel. The core process of the invention adopts a certain proportion of waste plastics as an additive to assist the pyrolysis of the crop straws, which efficiently reduces the pyrolytic temperature, and enhances the quality of pyrolysis oil (same with the quality of petrol and diesel). The invention relates to a novel pyrolytic system which adopts a self-heating efficient air-solid separation and direct condensation technology, can completely transform biomass materials into the high-quality biomass petrol and diesel (the productivity of which is about 50%). The biomass petrol and the biomass diesel can be directly used on a combustion motor for burning, and can efficiently reduce the motor vehicle exhaust. Biochar (the output of which is about 30%) obtained after the pyrolysis and combustible gases (the output of which is about 20%) can be used as heat sources for the pyrolysis, and the rest part can be used for combustion and electricity generation, and can be merged into commercial power grids to obtain extra economic benefits.

Description

technical field [0001] The invention belongs to the field of renewable energy. Background technique [0002] With the rapid development of our country's economy and society, our country's energy consumption has grown rapidly at an average annual growth rate of 6.9%. In 2000, my country's primary energy consumption was 750 million tons of oil equivalent, becoming the world's second largest energy consumer. However, my country's proven fossil fuel per capita resources are less than 30% of the world's average level. The lack of resources and the growth of energy consumption The contradiction between them will become more prominent in the future. Since my country became a net importer of oil in 1993, oil imports have been rising year after year, reaching 120 million tons in 2004, and the dependence on foreign oil has exceeded 30%. It is estimated that by 2020, my country's oil supply gap will reach 250 million tons. Dependency will reach 54%. According to the internationally ac...

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Problems solved by technology

[0006] However, bio-oil has the disadvantages of low calorific value, high viscosity, containing carbon powder and other solid particles, and is easy to polymerize and coke at high temperatures

It has significantly different properties from ordinary petrochemical diesel and heavy oil, and cannot be directly used in internal combustion engines and various traffic vehicles

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