Combined trough-tower concentration manner-based solar gasification system

Abstract

The invention discloses a combined trough-tower concentration manner-based solar gasification system which comprises an intermediate-temperature trough solar pyrolysis absorption reactor, a high-temperature rotating solar gasification reactor, a cyclone separator, an afterheat recovery device, a gas purification device, a heliostat field and a hyperboloid reflector. According to the system, different types of solar concentration devices and reactors are adopted for sequentially and independently finishing the pyrolysis and gasification reaction of a solid fuel, the intermediate-temperature trough solar pyrolysis absorption reactor is used for realizing the pyrolysis reaction of the solid fuel to obtain tar and coke at first, the heliostat field and the hyperboloid reflector are further used for acquiring high-concentration rate solar energy, and the high-temperature rotating solar gasification reactor is used for finishing reaction such as tar cracking and coke gasification; by the system, biomasses are efficiently gasified, the irreversible loss in a concentration gasification process is reduced, and the tar content of synthetic gas obtained by gasification is reduced.

Description

technical field [0001] The invention relates to the technical field of complementary utilization of multiple energy sources, in particular to a solar gasification system based on a trough-tower combined with light concentration, so as to utilize solar energy to realize high-efficiency gasification of solid hydrocarbon fuels. Background technique [0002] In response to the rapid economic development and social progress, the demand for energy is increasing year by year. For this reason, fossil fuels such as coal, oil and natural gas are consumed in large quantities, and also cause serious environmental pollution, which will hinder the sustainable development of the future economic society. . [0003] China's total primary energy production increased from 1.35 billion tons of standard coal in 2000 to 3.4 billion tons of standard coal in 2013, and its annual primary energy consumption also increased from 1.46 billion tons of standard coal in 2000 to 3.75 billion tons in 2013 s...

AI Technical Summary

Problems solved by technology

Although point concentrating technology can be used to provide heat energy of about 850°C required for the gasification reaction, this technology has very strict requirements on materials, and the investment cost is relatively high

At the same time, using a higher temperature heat source to first drive the pyrolysis reaction of biomass will lead to serious energy grade mismatch, which will increase the irreversible loss of the system

At the same time, similar to the conventional biomass gasification technology, the tar content in the syngas obtained from the existing solar-biomass gasification will also be high, which will seriously affect the normal operation of the gasification device and increase The burden of the large synthesis gas purification device also threatens the safe operation of the subsequent synthesis gas utilization system

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