Method of regenerating adsorbents
    3.
    发明授权
    Method of regenerating adsorbents 失效
    再生吸附剂的方法

    公开(公告)号:US4179399A

    公开(公告)日:1979-12-18

    申请号:US775982

    申请日:1977-03-09

    IPC分类号: B01J20/34 C01B31/08 B01J21/20

    CPC分类号: C01B31/086 Y10S502/517

    摘要: A charged adsorbent is accommodated in a desorbing vessel and in an intermediate container which communicates with the desorbing vessel. The charged adsorbent is desorbed in the desorbing vessel by contacting the same with a heat carrier, such as with hot sand, and a desorption gas which develops during the desorption of the charged adsorbent in the desorbing vessel is passed through the charged adsorbent accommodated in the intermediate container to capture at least one component of the desorption gas in the charged adsorbent present in the intermediate container. The purified desorption gas is withdrawn from the intermediate container, and the regenerated adsorbent is gradually discharged from the desorbing vessel and the supply of the adsorbent in the desorbing vessel is replenished by charged adsorbent from the intermediate container. The desorption gas is cooled during the passage thereof through the charged adsorbent present in the intermediate container. The magnitude of the temperature reduction of the desorption gas may be controlled by controlling the rate at which the desorption gas is discharged from the intermediate container, such as by resorting to the use of an adjustable vane. The adsorbent in the intermediate container may be confined by gas-permeable walls through which the desorption gas enters and leaves the adsorbent present in the intermediate container.

    摘要翻译: 带电的吸附剂容纳在解吸容器中和与解吸容器连通的中间容器中。 带电的吸附剂通过使其与热载体(例如用热砂)接触而在解吸容器中解吸,并且在解吸容器中的带电吸附剂的解吸附期间产生的解吸气体通过容纳在 中间容器以捕获存在于中间容器中的带电吸附剂中的解吸气体的至少一个组分。 从中间容器中取出纯化的解吸气体,从解吸容器中逐渐排出再生吸附剂,通过中间容器的带电吸附剂补充解吸容器中的吸附剂的供给。 解吸气体在其通过中间容器中存在的带电吸附剂的过程中被冷却。 解吸气体的温度降低的大小可以通过控制解吸气体从中间容器排出的速度来控制,例如通过使用可调叶片。 中间容器中的吸附剂可以被气体可渗透的壁限制,解吸气体通过其进入并离开存在于中间容器中的吸附剂。

    Method and arrangement for purifying gases

    公开(公告)号:US4023939A

    公开(公告)日:1977-05-17

    申请号:US663262

    申请日:1976-03-03

    摘要: A gaseous substance such as a flue gas or a combustion gas contains an adsorbable impurity which is capable of undergoing an exothermic reaction in the presence of oxygen. The gaseous substance is passed into an adsorber via an inlet conduit. In the adsorber, the impurity in the gaseous substance is adsorbed therefrom. The purified gaseous substance is withdrawn from the adsorber therefrom. The purified gaseous substance is withdrawn from the adsorber via an outlet conduit and conveyed to an exhaust stack. The adsorption of the impurity, as well as the reaction thereof with oxygen in the adsorber, liberate heat. The liberated heat is conveyed from the adsorber by the gaseous substance which is being purified and, accordingly, no undue temperature increase, which may harm or even cause combustion of the adsorbent, occurs in the adsorber. The operation of purifying the gaseous substance is carried out at an underpressure so that, when passage of the gaseous substance through the adsorber is interrupted for some reason, currents of air tend to be drawn through the adsorber due to the suction effects generated in the inlet and outlet conduits. The currents of air constitute sources of fresh oxygen and, as a result, reaction of the adsorbed impurity can continue. The liberated heat is no longer removed, however, so that a drastic temperature increase will then occur in the adsorber. To avoid this, a pair of spaced butterfly valves is provided in both the inlet and outlet conduits. The butterfly valves close, although not with absolute gastightness, when the passage of the gaseous substance through the adsorber is interrupted. This reduces the suction effects. Air or an inert gas is admitted into the regions between the respective pairs of butterfly valves until a pressure on the order of atmospheric pressure has been reached in these regions. The air or inert gas serves as a sort of buffer which prevents the suction effects generated by the source of the gaseous substance and the exhaust stack from acting on the adsorber. Although the air or inert gas may leak into the adsorber until atmospheric pressure has been reached in the latter, any oxygen introduced in this manner is quickly used up so that only minimal temperature increases occur in the adsorber.

    Arrangement for regenerating particulate adsorbents
    5.
    发明授权
    Arrangement for regenerating particulate adsorbents 失效
    再生颗粒状吸附剂的布置

    公开(公告)号:US4201695A

    公开(公告)日:1980-05-06

    申请号:US854528

    申请日:1977-11-25

    摘要: A reaction vessel for regenerating particulate adsorbents has a bottom outlet and top inlets for admission of the adsorbent to be regenerated by being heated to a regeneration temperature, and for a particulate regenerating material at a temperature above the regeneration temperature. The mixture of the adsorbent with the regenerating material forms a bed in the reaction vessel and is continuously withdrawn through the outlet so that the bed descends toward the latter and is replenished from above under the formation of a cone at the upper region of the bed. A plurality of tubular baffles coaxially surrounds the inlets which are also coaxial with one another, each of the tubular baffles penetrating into the bed in the region of the cone and retards the flow of the particles of the mixture down the slope of the cone in that the particles must pass underneath the baffle to flow to the next baffle. The bed may be confined between a plurality of axially overlapping spaced tubular guide baffles located in the interior of the reaction vessel with a spacing therefrom. At least one partition may be provided between one of the guide baffles and the vessel, subdividing the chamber between the vessel and the guide baffles into two compartments from which gases which develop during the regeneration of the adsorbent are separately exhausted.

    摘要翻译: 用于再生颗粒吸附剂的反应容器具有底部出口和顶部入口,用于通过加热到再生温度进入待再生的吸附剂,并且在高于再生温度的温度下具有颗粒再生材料。 吸附剂与再生材料的混合物在反应容器中形成床,并通过出口连续排出,使得床向下降并且在床的上部区域处形成锥体,从上方补充。 多个管状挡板同时围绕彼此同轴的入口,每个管状挡板在锥体的区域内渗透入床中,并使混合物颗粒的流动沿锥体的斜面延伸,因此在那 颗粒必须通过挡板下方流到下一个挡板。 床可以限制在位于反应容器内部的多个轴向重叠的间隔开的管状引导挡板之间,其间隔开。 可以在导流挡板和容器之一之间设置至少一个隔板,将容器和引导挡板之间的室细分成两个隔室,在该隔室中吸附剂再生过程中产生的气体分开排出。