High-temperature solar thermochemical tail gas treatment integrated heat recovery and filtration system

Abstract

An integrated heat recovery and filtration system for high-temperature solar thermochemical tail gas treatment, including a primary filter heat recovery subsystem, a secondary filter heat recovery subsystem composed of two parallel heat storage tanks, a blowback filter and connecting pipeline valves. The heat storage tank is wrapped with an insulation layer, and the bottom shrinkage section has an ash discharge port. The system of the present invention has two-stage filtration and two-stage heat recovery; between the stages, the graded heat recovery of reaction intake air can be realized through valve switching and the intermediate back-blowing filter, and the coarse filtration, fine filtration, and heat storage heat recovery in the stages are layered in sequence. The secondary filtration and heat recovery subsystem, which is responsible for the main heat output, takes into account the filtration performance, heat exchange strength, sealing effect and pressure resistance loss through the coupling of fixed bed and fluidized bed. The operation mode of the present invention includes: primary heat recovery without fluctuation of solar radiation during the day, two-stage heat recovery with fluctuation of solar radiation during the day, auxiliary heat recovery and heat release before the system is started, and dust cleaning of the system. The system has high efficiency and wide application range, and realizes cascaded utilization of waste heat from gas production.

Description

technical field [0001] The invention relates to a heat recovery and filtration integrated system for high-temperature solar thermochemical tail gas treatment. Background technique [0002] The solar high-temperature thermochemical method converts solar energy into chemical energy by converging solar energy to generate high temperature to promote the thermochemical process, which can produce high-grade fuel in a clean and energy-saving manner, and facilitate transportation and storage, realizing the storage of solar energy across time and space And storage scheduling, overcome the problems of low energy density, poor continuity, and uneven distribution that exist in the direct utilization of solar energy. [0003] For example, dry solar gasification technology utilizes high-power concentrated solar energy to generate a high temperature above 1000°C, so that carbon-containing particles and carbon dioxide react in a solar reactor to produce carbon monoxide, which is more carbon...

AI Technical Summary

Problems solved by technology

[0012] The purpose of the present invention is to overcome the shortcomings of the filtration and heat storage systems in the existing high-temperature solar thermochemical fuel production, and propose a solution for the solar thermochemical system to deal with complex radiation fluctuation heat storage, high-temperature gas production heat recovery and gas-solid separation. Thermal filtration integrated system, the present invention has high filtration and heat storage and recovery capacity, low cost and stable performance

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