Process for producing fuel oil by thermal cracking of biomass

Abstract

The invention provides a process for producing fuel oil by thermal cracking of biomass and relates to the technical field of thermal cracking of biomass and renewable resources. The process mainly comprises the following steps: preparing biomass and waste plastics used as raw materials; carrying out thermal cracking on the raw materials in a thermal cracking furnace; carrying out solid-gas separation, wherein the non-condensable gas is used as a heat resource for a thermal cracking reaction; enabling a heat carrier to be maintained in the furnace to continuously participate in the reaction; esterifying, distilling and catalyzing biological crude oil and condensing to obtain the biofuel products. By virtue of the process disclosed by the invention, the defects of the prior art are overcome, the catalytically refined fuel oil has the characteristics of high calorific value, good liquidity and good stability; the process is reasonable, simple in control, convenient, energy-saving, high in production efficiency, especially strong in suitability for raw materials, simple in equipment and convenient to operate.

Description

technical field [0001] The invention relates to the technical field of biomass cracking and renewable resources. Background technique [0002] Today, when non-renewable resources such as oil and natural gas are on the verge of depletion and environmental pollution is becoming more and more serious, energy demand and environmental protection have become two major issues in the world today. Compared with fossil resources, biomass is renewable, has little environmental pollution, and does not produce CO 2 Emissions are one of the most ubiquitous renewable resources on earth. With the improvement of people's living standards, the content of organic matter in domestic waste is gradually increasing, and landfill treatment can no longer meet the requirements of environmental protection. Incineration reduction treatment will produce harmful substances such as dioxins. Therefore, the development of thermal cracking process equipment suitable for different organic compounds is an ur...

AI Technical Summary

Problems solved by technology

However, there are problems such as large equipment wear, large power consumption, and difficulty in industrial scale-up

[0005] (2) Indirect reactor technology. The main feature of this type of reactor is that a high-temperature surface or heat source provides the heat energy required for biomass pyrolysis, which mainly conducts heat through heat radiation. Common thermobalances belong to this category. , as a laboratory equipment, it is difficult to scale up industrially

[0008] 1. Insufficient fluidized bed: high operating requirements, high energy consumption for the preparation, circulation, heating and cooling of a large amount of inert fluidized gas, low thermal efficiency when the scale is large, strict requirements on the particle size and shape of raw materials, greatly increasing the processing cost

[0009] 2. The circulating fluidized bed reactor has the problem of scorching and slag wear, and it is not easy to use on a large scale;

[0010] Insufficient rotating cone reactor: high-speed rotating parts, high energy consumption, and difficult operation

[0011] 3. Vacuum moving bed reactors have high requirements for vacuum degree, which increases manufacturing cost and operation difficulty

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