阅读说明：本技术 一种糠醛气相脱羰制取呋喃的装置及方法 (Device and method for preparing furan by furfural gas-phase decarbonylation ) 是由 程光锦 王玉斌 伏忠祥 于 2020-12-25 设计创作，主要内容包括：本发明涉及一种糠醛气相脱羰制取呋喃的装置及方法,其特征在于：(1)糠醛以300-350Kg/h通入糠醛汽化塔加热器预热至110-138℃后进入汽化塔,通氢气保护,控制塔内温度130-160℃；(2)塔顶出来的气相换热后进入电加热器加热至260-330℃后进入脱羰反应器,通入氢气保护,控制反应器内温度260-350℃、压力0.01-0.03Mpa；(3)反应器出来的气相与糠醛汽化塔的气相换热后进入淬冷塔,塔底液返回糠醛汽化塔；(4)塔内气相深冷后进入粗品槽,粗品槽内气相进入吸收塔；粗品槽内液相进入精馏塔,减压精馏得合格精品呋喃。本发明优点：降低了糠醛高温副反应,呋喃转化率由原来40-45%提高至50-60%,催化剂运行周期由7-10天延长到30-60天；吨呋喃蒸汽能量消耗由原来3.5-5吨降至2-2.5吨,呋喃纯度由原来98–98.5%提高至99–99.8%。(The invention relates to a device and a method for preparing furan by furfural gas-phase decarbonylation, which are characterized in that: (1) introducing furfural into a furfural vaporization tower heater at 350Kg/h of 300-; (2) the gas phase from the tower top is subjected to heat exchange and then enters an electric heater to be heated to 260-temperature plus 330 ℃ and then enters a decarbonization reactor, hydrogen is introduced for protection, the temperature of 260-temperature plus 350 ℃ and the pressure of 0.01-0.03MPa in the reactor are controlled; (3) the gas phase from the reactor exchanges heat with the gas phase of the furfural vaporization tower and then enters a quenching tower, and the tower bottom liquid returns to the furfural vaporization tower; (4) the gas phase in the tower enters a crude product tank after being subjected to deep cooling, and the gas phase in the crude product tank enters an absorption tower; and (4) feeding the liquid phase in the crude product tank into a rectifying tower, and carrying out vacuum rectification to obtain qualified fine furan. The invention has the advantages that: the high-temperature side reaction of the furfural is reduced, the conversion rate of the furan is improved to 50-60% from the original 40-45%, and the operation period of the catalyst is prolonged to 30-60 days from 7-10 days; the energy consumption of the furan steam per ton is reduced from 3.5-5 tons to 2-2.5 tons, and the purity of the furan is improved from 98-98.5% to 99-99.8%.)