工业发展带来了CO_(2)的大量排放,在实现碳达峰碳中和目标的过程中,碳捕集、利用与封存(carbon capture,utilization and storage,CCUS)技术是不可或缺的关键技术。现阶段技术成熟度较高且未来发展潜力大的碳捕集方法为燃烧后碳捕集技术...工业发展带来了CO_(2)的大量排放,在实现碳达峰碳中和目标的过程中,碳捕集、利用与封存(carbon capture,utilization and storage,CCUS)技术是不可或缺的关键技术。现阶段技术成熟度较高且未来发展潜力大的碳捕集方法为燃烧后碳捕集技术,主要有吸收法、吸附法、膜法以及深冷法等。对最常用的4种碳捕集方法的发展与工业应用情况进行介绍,分析了几种方法的工业适用场景,尤其是目前正在运行的大型碳捕集项目中应用最多的化学吸收法与物理吸附法。化学吸收法、吸附法以及膜法碳捕集技术的未来发展潜力巨大,能够快速推进双碳目标的达成,助力碳的近零排放。展开更多
A new structural design for the vent stack with an inclined exit was proposed to reduce the settlement hazard of the cryogenic plume from a cryogenic wind tunnel;it extends the plume trajectory to increase the effecti...A new structural design for the vent stack with an inclined exit was proposed to reduce the settlement hazard of the cryogenic plume from a cryogenic wind tunnel;it extends the plume trajectory to increase the effective contact space and time for mixing between the plume gas and atmospheric air before the plume settles to the ground,contributing to more efficient energy consumption for heating.Reduced-scale experiments and numerical simulations of plume dispersion based on vertical and 30°-and 45°-inclined exits were conducted to study harm reduction and energy-saving potential.Analyses of the minimum temperature and minimum oxygen concentration of the plume near the ground indicate that the new exhaust design with an inclined exit clearly reduces the settlement hazard.Under windless conditions and without using a fan-ejector system,up to 15.9%of the heating energy used by the burner can be saved by adopting the new design.展开更多
基金Key Research and Development Program of Anhui Province of China (No. 201904a07020073)Science and Technology Foundation of China (No. JSJL2020210A001)。
文摘工业发展带来了CO_(2)的大量排放,在实现碳达峰碳中和目标的过程中,碳捕集、利用与封存(carbon capture,utilization and storage,CCUS)技术是不可或缺的关键技术。现阶段技术成熟度较高且未来发展潜力大的碳捕集方法为燃烧后碳捕集技术,主要有吸收法、吸附法、膜法以及深冷法等。对最常用的4种碳捕集方法的发展与工业应用情况进行介绍,分析了几种方法的工业适用场景,尤其是目前正在运行的大型碳捕集项目中应用最多的化学吸收法与物理吸附法。化学吸收法、吸附法以及膜法碳捕集技术的未来发展潜力巨大,能够快速推进双碳目标的达成,助力碳的近零排放。
基金supported by the Key Research and Development Program of Zhejiang Province(No.2020C01029),China。
文摘A new structural design for the vent stack with an inclined exit was proposed to reduce the settlement hazard of the cryogenic plume from a cryogenic wind tunnel;it extends the plume trajectory to increase the effective contact space and time for mixing between the plume gas and atmospheric air before the plume settles to the ground,contributing to more efficient energy consumption for heating.Reduced-scale experiments and numerical simulations of plume dispersion based on vertical and 30°-and 45°-inclined exits were conducted to study harm reduction and energy-saving potential.Analyses of the minimum temperature and minimum oxygen concentration of the plume near the ground indicate that the new exhaust design with an inclined exit clearly reduces the settlement hazard.Under windless conditions and without using a fan-ejector system,up to 15.9%of the heating energy used by the burner can be saved by adopting the new design.
