Experimental equipment for fouling prediction and scale inhibition evaluation of flue gas turbines in catalytic cracking units

Abstract

The invention belongs to the technical field of petrochemical industry, and provides an experimental equipment for scale prediction and scale inhibitor evaluation of a flue gas turbine (catalytic smoke machine for short) in a catalytic cracking unit of an oil refinery. Aiming at the common fouling phenomenon of hoods, combined with the actual flue gas flow characteristics on site, an evaluation experiment equipment that can be directly connected to the inlet pipeline of catalytic hoods was invented. This equipment can simulate the flow state of flue gas in catalytic hoods , using the actual flue gas of industrial production equipment, which can effectively reflect the scaling status of the hood, and can observe the internal scaling status in time; the antiscalant feeding bin designed by this equipment can be used for the development of antiscalant and the test of its antiscaling performance.

Description

technical field [0001] The invention relates to an experimental equipment for fouling prediction and scale inhibition evaluation of flue gas turbines in catalytic cracking units. The equipment belongs to the technical field of petrochemical industry and proposes a scaling prediction method for flue gas turbines (catalytic smokers for short) in catalytic cracking units in oil refineries. Evaluation of experimental equipment with antiscalants. Background technique [0002] In recent years, the hoods of catalytic cracking units in refineries have experienced vibrations caused by severe fouling in various refineries: ⑴ The hoods vibrate; ⑵ In severe cases, the hood blades are damaged or even broken; 3) Deposits are formed on the surface of hood blades things. As a result, a series of process and equipment problems are caused: ⑴ causing equipment damage; ⑵ operators usually reduce the flue gas flow rate of the hood to reduce vibration, the consequence is that the recovery energy...

AI Technical Summary

Problems solved by technology

As a result, a series of process and equipment problems are caused: ⑴ causing equipment damage; ⑵ operators usually reduce the flue gas flow rate of the hood to reduce vibration, the consequence is that the recovery energy of the hood is greatly reduced, and the energy consumption of the device is increased; ⑶ long-term The accumulation of problems will cause equipment damage, resulting in abnormal shutdown and serious losses; (4) The fouling of the smoke machine will cause the efficiency of the smoke machine to decrease and lead to an increase in energy consumption of the device

On the one hand, these problems increase the workload of process and equipment maintenance personnel, on the other hand, they also increase the difficulty of energy saving and daily management of the unit, and bring difficulties to the long-term stable operation of the catalytic cracking unit

[0004] Although catalytic hoods are so important, so far no technical development work has been carried out on the online prediction and antiscaling technology of hoods.

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