Improvement of process operation and equipment during burning delay Coke of calcining furnace for graphite rod
In the production, the calcination delay Coke of the graphite rod calcination Furnace is put forward, and many measures are proposed to adapt to the calcination delay Coke from both process operation and equipment. The main measures in process operation are:
(1) Low material surface and improve the first layer of the flue temperature. The aim is to make most of the volatiles added to the delayed Coke can be discharged rapidly in a relatively short period of time.
(2) feeding. The amount of each feed not too much (such as the original half an hour to add a material to 15 minutes to add a material), at the same time using continuous discharging mechanism to discharge material, so that the cans often loose material is not easy to form large chunks.
(3) To maintain a high operating negative pressure, and often clean the volatile lead exports and volatile materials, so that volatile can be discharged smoothly.
(4) When the mixture of delayed coke and asphalt coke is used for forging and burning, if the pitch Coke is changed from 50-70 mm to 20 mm, the asphalt Coke and the delayed Coke will be mixed more evenly, and the coking phenomenon can be alleviated.
After adopting the above measures in the process operation, the delayed Coke (such as delayed Coke IV) produced by some refineries has a good effect, but the effect on the delayed Coke V is still unsatisfactory. Delayed Coke v even after the adoption of the above-series measures, in the proportion of mixed coke generally should not be more than 50%, otherwise it is often found in the tank coking and difficult to normal production. In order to further solve the technical problem of the delayed Coke burning in the tank furnace, it is necessary to reconstruct the furnace body structure of the tank furnace properly.