Method for preparing fuel liquid by using low cost and pollution-free biomass and apparatus thereof

Abstract

The invention discloses a device for preparing a liquid fuel by using low-cost and pollution-free biomass, which comprises a screw feeder, a fluidized-bed reactor, a combustion chamber, a gas-solid separator, a material cooling tower and a gas coke-oven, wherein, the screw feeder is communicated and connected with the fluidized-bed reactor through a pipeline; the lower part of the fluidized-bed reactor is provided with the combustion chamber which is communicated and connected with the gas coke-oven through the pipeline; the upper part of the fluidized-bed reactor is communicated and connected with the gas-solid separator of which the upper part is communicated and connected with the material cooling tower through the pipeline; the lower part of the gas-solid separator is provided with a solid carbon outlet; and the lower part of the material cooling tower is provided with a product discharging port and the upper part thereof is provided with an incondensable gas discharging port. The device has a plurality of advantages of reasonable process engineering, simple device structure, safe and reliable operation, no secondary pollution, low cost, being energy-saving and the like.

Description

technical field [0001] The present invention relates to a method and device for preparing liquid fuel, in particular to a method and device for preparing liquid fuel by utilizing low-cost and pollution-free biomass. Background technique [0002] With the continuous progress of human civilization and the continuous development of economy, energy and environment have gradually become the bottleneck of development. Since the Industrial Revolution, the application of fossil energy has greatly promoted the development of society, but resources are increasingly depleted, and the uncontrolled use of fossil energy has caused increasingly serious environmental problems. Therefore, developing and finding new alternative energy sources has become a major issue that human society must solve in the new century. [0003] Biomass is a carbon and hydrogen-containing material with the characteristics of renewability, wide distribution, and environmental friendliness. Biomass energy conversi...

AI Technical Summary

Problems solved by technology

The common shortcomings in the current technology are: (1) high-quality energy is consumed to heat the intermediate heat carrier, which makes the liquefaction cost higher and is not conducive to industrialization; (2) the use of high nitrogen as a fluidization medium increases the cost of use; (3) after use If the heat carrier is not handled properly, it is easy to cause secondary pollution to the environment; (4) the condensation of bio-oil pyrolysis gas is immature; (5) the particle size of biomass feed is small, which increases the crushing cost

Images