| Natural gas is a clean resource, it is chiefly made of methane, in addition, also contains ethane, propane, butane . Pure methane is an important material for chemical production, ethane can be used for the preparation of ethene, propane and butane are the main constituents of LPG. Therefore, our aim is to separate them with adsorption method in order to carry out their application. The experimental process is in two phases. First, cutting is produced between C2 and C3, one group is C1 and C2 the other group is C1 and C2. Second, we cut between C1 and C2. Two kinds of virgin gas are made and we choose two types of 13X molecule sieve with different specific surface area, silicon B and activated carbon. By breakthrough curves over different adsorbents, we can compare adsorption capacity, regenerated conditions are measured mainly by regenerated temperature. After that, we determine breakthrough curves over different pressure, different temperature ,and different flux, In order to seek the influence over different conditions. At last, we use activated carbon and C1 and C2 virgin gas to look for the completed regenerated condition.The experimental between C2 and C3 results show that absorption capacity of an order is activated carbon>13X molecule sieve2> 13X molecule sieve1> silicon B. Also, the regenerated temperature shows the same sequence, which indicates that adsorbent is more difficult to desorption with high absorption capacity. The absorption capacity of an order is also activated carbon>13X molecule sieve2> 13X molecule sieve1> silicon B when the cutting turns up between C1 and C2, and regenerated temperature of adsorbent is room temperature except activated carbon. The completed regenerated condition of activated carbon is following: regeneration method: adverse wind swept renewable; regeneration temperature:150℃, regeneration time is10min with flux is 17ml/min, or regeneration time is 5min with flux is 50ml/min.
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