A biomass catalytic pyrolysis coupled on-line upgrading to produce liquid fuel reaction device

Abstract

The invention provides a biomass catalytic pyrolysis coupled online quality improvement to prepare liquid fuel reaction device, which belongs to the field of high-value utilization of biomass. The device includes a feeding system, a pyrolysis reaction system, a coke collection system, an online catalytic upgrading system, a multi-stage controllable condensation system, and an online gas detection and collection system. The device of the present invention has the functions of catalytic pyrolysis of biomass under different atmospheres such as nitrogen, hydrogen, and methane, online catalytic upgrading of pyrolysis volatiles, controllable graded condensation of upgraded volatiles, and online detection and collection of non-condensable gases. The device is compact in structure, flexible and changeable, easy to operate, stable and reliable in operation, and can realize high-efficiency conversion of biomass and direct production of ready-to-use biofuel.

Description

Technical field [0001] The present invention belongs to the field of biomass high-value utilization, in particular to a biomass catalytic pyrolysis coupled online quality improvement to prepare liquid fuel reaction apparatus. Background [0002] Biomass is the only renewable energy source that can be directly converted into carbon-containing liquid fuels, and the use of biomass instead of oil to produce liquid fuels for vehicles and aviation will not only help reduce dependence on fossil fuels, but also significantly reduce CO 2 And other greenhouse gas emissions, and finally to build a clean, safe and reliable diversified energy supply system. [0003] Among the many biomass liquefaction utilization technologies, pyrolysis technology can efficiently transform biomass into liquid bio-oils with easy storage and transportation and high energy density in a continuous and industrial production mode. However, the bio-oil prepared by direct pyrolysis of biomass has many undesirable cha...

AI Technical Summary

Problems solved by technology

However, the bio-oil produced by the direct pyrolysis of biomass has many undesirable characteristics such as high water content, low calorific value, high oxygen content, high acidity and corrosion, low stability and high viscosity. The characteristics of the fuel are quite different, so it is difficult to use it directly as a fuel

In order to improve the quality of bio-oil, methods such as catalytic cracking and catalytic hydrogenation are usually used to upgrade and modify the bio-oil after pyrolysis and condensation, but the high oxygen content of bio-oil makes it easy to Problems such as condensation and polycondensation of unstable components and serious deactivation of catalysts occur

In addition, the energy loss and additional equipment cost caused by the condensation of pyrolysis volatiles in the upgrading process of bio-oil and the additional equipment cost also limit its economic competitiveness as a process route.

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