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    • 49. 发明授权
    • Process and apparatus for recovering hydrocarbons from air-hydrocarbon
vapor mixtures
    • 从空气 - 烃蒸汽混合物中回收烃的方法和设备
    • US4343629A
    • 1982-08-10
    • US231917
    • 1981-02-05
    • Harold L. DinsmoreRobert E. SchwartzWillard N. Tuttle
    • Harold L. DinsmoreRobert E. SchwartzWillard N. Tuttle
    • C10G5/02B01D53/04B01D53/047B01D53/14
    • B01D53/04B01D2253/102B01D2256/24B01D2259/40003B01D2259/40083B01D2259/402B01D2259/4516B01D53/0438
    • A process and apparatus for recovering hydrocarbons from an air-hydrocarbon vapor mixture such as the mixture of air and vaporized light hydrocarbon compounds expelled as a result of loading gasoline or the like into storage tanks, tank cars and tank trucks. The air-hydrocarbon vapor mixture is caused to flow through a bed of solid adsorbent whereby the hydrocarbons ar removed from the mixture and a residue gas stream comprised of substantially hydrocarbon-free air is produced. The substantialy hydrocarbon-free air is vented to the atmosphere and while the first bed is removing hydrocarbons from the air-hydrocarbon vapor mixture, a second bed of solid adsorbent having hydrocarbons adsorbed thereon is simultaneously regenerated by evacuating the bed with vacuum pumping and the air-hydrocarbon vapor mixture produced in the regeneration of the bed is contacted with a liquid absorbent whereby a major portion of the hydrocarbons are absorbed therefrom and recovered. The beds of solid adsorbent are cooled, at least while the air-hydrocarbon vapor mixture is flowing therethrough and hydrocarbons are being adsorbed on the bed, to prevent the beds from overheating due to side exothermic reactions of hydrocarbons and/or impurities contained in the air-hydrocarbon vapor mixture with air and/or the solid adsorbent. Apparatus for carrying out the process of the present invention is also provided.
    • 用于从空气 - 烃蒸气混合物中回收烃的方法和装置,例如由于将汽油等装载到储罐,罐车和油罐车中而排出的空气和蒸发的轻碳氢化合物的混合物。 使空气 - 烃蒸汽混合物流过固体吸附剂床,由此产生从混合物中除去的烃和由基本上不含烃的空气组成的残余气流。 大量的无烃空气被排放到大气中,而当第一床从空气 - 烃蒸汽混合物中除去碳氢化合物时,吸附有烃的固体吸附剂的第二床同时通过真空抽吸抽真空而再生,空气 在床的再生中产生的烃蒸气混合物与液体吸收剂接触,由此主要部分的烃被吸收并回收。 固体吸附剂床至少在空气 - 烃蒸汽混合物流过其中并且烃被吸附在床上时被冷却,以防止由于空气中包含的烃和/或杂质的侧面放热而使床过热 - 空气和/或固体吸附剂的烃蒸汽混合物。 还提供了用于实施本发明的方法的设备。
    • 50. 发明授权
    • Process for recovering hydrocarbons with air-hydrocarbon vapor mixtures
    • 用空气 - 烃蒸汽混合物回收烃的方法
    • US4331456A
    • 1982-05-25
    • US163587
    • 1980-06-27
    • Robert E. SchwartzHarold L. DinsmoreDonald J. PetersGary W. Long
    • Robert E. SchwartzHarold L. DinsmoreDonald J. PetersGary W. Long
    • B01D53/04B01D53/047
    • B01D53/04B01D2253/102B01D2256/24B01D2259/40003B01D2259/40083B01D2259/402B01D2259/4516B01D53/0438B01D53/047
    • An improved process for recovering hydrocarbons from an air-hydrocarbon vapor mixture such as the mixture of air and vaporized light hydrocarbon compounds expelled as a result of loading gasoline or the like into storage tanks and tank trucks. The air-hydrocarbon vapor mixture is caused to flow through a bed of solid adsorbent whereby the hydrocarbons are removed from the mixture and a residue gas stream comprised of substantially hydrocarbon-free air is produced. The substantially hydrocarbon-free air is vented to the atmosphere and a second bed of solid adsorbent having hydrocarbons adsorbed thereon is subjected to conditions which cause desorption of the hydrocarbons and thereby regeneration of the bed. The regeneration of the beds is accomplished by evacuating the beds with vacuum pumping whereby a major portion of the hydrocarbons are desorbed therefrom, subsequently introducing a small quantity of heated hydrocarbon-free air into the beds whereby additional hydrocarbons are stripped therefrom and then subjecting the bed to further evacuation by ejector jet pumping while continuing to evacuate the bed by vacuum pumping whereby yet additional hydrocarbons are desorbed therefrom. The air-hydrocarbon vapor mixture produced in the regeneration of the beds is contacted with a liquid absorbent whereby a major portion of the hydrocarbons are absorbed therefrom and recovered.
    • 一种用于从空气 - 烃蒸气混合物中回收烃的改进方法,例如由于将汽油等装载到储罐和油罐车中而排出的空气和蒸发的轻碳氢化合物的混合物。 使空气 - 烃蒸气混合物流过固体吸附剂床,由此从混合物中除去烃,并产生由基本上无烃的空气组成的残余气流。 将基本上无烃的空气排放到大气中,并且吸附有烃的固体吸附剂的第二床受到使烃解吸并由此再生的条件。 床的再生是通过真空泵抽抽床来实现的,其中主要部分的烃从其中脱附,随后将少量加热的无烃空气引入床中,由此从中除去另外的烃,然后使床 以通过喷射器喷射泵进一步抽真空,同时通过真空抽吸继续抽空床,由此另外的烃从其中解吸。 在床的再生中产生的空气 - 烃蒸汽混合物与液体吸收剂接触,由此主要部分的烃被吸收并回收。