种铁基载氧体深度还原的化学链制氢装置及方法

• Format: Patent
• Language: Chinese
• Published: 24.08.2018
• Subjects: CHEMISTRY; COMPOUNDS THEREOF; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; INORGANIC CHEMISTRY; METALLURGY; NON-METALLIC ELEMENTS; REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGYGENERATION, TRANSMISSION OR DISTRIBUTION; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE

本发明公开了种铁基载氧体深度还原的化学链制氢装置及方法，该装置包括进气端气路切换系统、四个依序排列的固定床反应器和尾气端气路切换系统，有两个固定床反应器处于还原阶段，在保证燃料完全燃烧的前提下，提高铁基载氧体的固相转化率。四个固定床反应器依次处于燃料还原、深度还原、水蒸汽氧化和空气燃烧阶段(水蒸汽吹扫阶段)，进而实现连续高效地化学链制氢过程。本发明中铁基载氧体的还原固相转化率得到大幅度提高，单位载氧体的产氢强度明显增加，装置产氢效率有效改善，在无复杂的气体净化装置下，获得高纯氢气，制氢成本降低。 The present invention discloses a chemical-looping hydrogen production apparatus and method using deep reduction of an iron-based oxygen carrier; the apparatus comprises an intake end gas circuit switching system, four fixed bed reactors arranged in order and a tail gas end gas circuit switching system; two fixed bed reactors are in reduction phase, and solid conversion rate of the iron-based oxygen-carrier is increased at the premise of ensuring full combustion of fuel. The four fixed bed reactors are in fuel reduction phase, deep reduction phase, steam oxidation phase and air combustion phase (steam purging phase) sequentially, so that continuous efficient chemical-looping hydrogen production is achieved. Reduced solid conversion rate of the iron-based oxygen c