Method and equipment for producing liquefied straw oil

Abstract

The invention relates to a method and equipment for producing straw oil with relatively high heat value. The method comprises the following steps: respectively processing straw powder stocks and bed material stocks; feeding the straw powder stocks and the bed material stocks into a thermal cracking box and performing cracking reaction; condensing a cracked gas into liquid biological oil in a condenser; adding an additive which comprises straw carbonizing powder, rubber carbonizing powder and animal skeleton carbonizing powder in the process of processing straw raw materials into straw powder, wherein a bed material is a composition which comprises pottery clay powder and a catalyst, the catalyst comprises platinum, nickel, cerium oxide powder, iron powder and tourmaline powder and the weight ratio of the straw powder and the bed material which enter the thermal cracking box is 7:3; and performing cracking reaction in the thermal cracking box in vacuum at a temperature of 450 DEG C-500 DEG C for 0.3-0.5 seconds. The equipment disclosed by the invention is specially used for implementing the method. The method disclosed by the invention can be used for greatly improving the transformation rate of the straw oil and also greatly enhancing the heat value and is low in cost and easy to popularize.

Description

technical field [0001] The invention relates to a method and a device for producing straw liquefied oil. Background technique [0002] The straw of crops contains biomass energy, and the liquefaction of straw into oil is an effective way to utilize biomass energy. Compared with direct combustion of straw to obtain heat energy, the utilization rate of biomass energy is increased by more than 30%, and various valuable by-products are produced at the same time. have a broad vision of application. In the process of straw liquefaction, it mainly includes adding crushed straw material and bed material as heating working medium into the thermal cracking box for thermal cracking reaction, and condensing the gaseous substances formed after thermal cracking into liquid oil. Due to the limitation of the conditions of the thermal cracking box in some processes, the cracking reaction rate is slow, and secondary reactions are easy to occur, and in the reaction process, the selection of a...

AI Technical Summary

Problems solved by technology

In the process of straw liquefaction, it mainly includes adding crushed straw material and bed material as heating working medium into the thermal cracking box for thermal cracking reaction, and condensing the gaseous substances formed after thermal cracking into liquid oil. Due to the limitation of the conditions of the thermal cracking box in some processes, the cracking reaction rate is slow, and secondary reactions are easy to occur, and in the reaction process, the selection of additives and catalysts is different, and a series of problems such as reaction temperature control, resulting in the production of straw The moisture content of the oil is high, the calorific value is low, and the conversion rate of straw into straw oil is low, which is the defect of the prior art

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