| 초록 |
In continuous processes of liquids hydrogenation when membrane catalyst in the form of thin foil is used, hydrogen permeating through the catalytic membrane is not entirely consumed by chemical reaction, thus producing gas bubbles in volume of liquid, and arousing two problems. In the first place these bubbles compete with liquid for the reaction space and catalytic surface, so interfering contact time of catalytic reaction and preventing deep conversion of substance under hydrogenation for one run, and, secondly, they do not participate in the catalytic process, so increasing the wastes of hydrogen. For dissolving these problems it is proposed to form in the catalytic reactor continuous gas channel adjacent to upper border of moving liquid along all its way in the reactor. Such channel can be formed if liquid will move over the catalyst as unconfined flow with partially free surface, as it happens when thickness of liquid layer in its beginning is higher than at its end. In this case bubbles of excessive hydrogen withdraw from liquid to gas channel and go out from the reactor by this way without violating normal course of hydrogenation. The best results can be achieved when this gas channel is connected with the channel of initial hydrogen supply. It equalizes hydrogen partial pressure over both sides of the membrane and permeation of hydrogen in this case is strictly equal to its consumption by catalytic reaction, so excessive waste of hydrogen is reduced to zero.
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