Method for evaluating on-site desorption effect of activated coke

A method for evaluating an on-site desorption effect of activated coke, comprising the following steps:

• (1) taking and grinding an activated-coke sample 1 before on-site desorption into powder, and measuring a sulfur content of the powder, which is recorded as S1 in %;
• (2) taking and grinding an activated-coke sample 2 after on-site desorption into powder, and measuring a sulfur content of the powder, which is recorded as S2 in %;
• (3) performing a desorption experiment using the activated-coke sample 1 according to operation parameters of the on-site desorption work, collecting and grinding an activated-coke sample 3 after the desorption experiment into powder, and measuring a sulfur content of the powder, which is defined as a fixed sulfur content and recorded as S3 in %;
• (4) defining an activated-coke desorption rate R, which is the desorption rate of sulfur that can be desorbed in the activated coke through an on-site desorption tower, and calculating the activated-coke desorption rate R by S1, S2 and S3, a calculation formula being:
• R
• =
• S
• ⁢
• 1
• -
• S
• ⁢
• 2
• S
• ⁢
• 1
• -
• S
• ⁢
• 3
• ×
• 100
• ⁢
• %
• ;
• and
• (5) evaluating the on-site desorption effect of activated coke according to a calculated value of the activated-coke desorption rate R;
• wherein in the step (3), parameters of the desorption experiment comprise:
• desorption time being greater than or equal to 40 min, a desorption temperature being 440° C., and a nitrogen flow rate being in a range from 40 to 60 L/h.