Usage of HW type nozzles in RFCCU
Thread Content
Please tell me: Based on expert advice, we are preparing to use HW type nozzles. Have you ever used HW type nozzles? How effective is it?
It is equivalent to a target nozzle with a plate inside.
HW type is a target feed atomizing nozzle. Its characteristic is that a partition plate parallel to the fan-shaped plane of the tail nozzle is installed in the delivery pipe, that is, a pre-film plate. The pre-film plate divides the flow channel in the delivery pipe into two semi-circular flow channels. It is a pneumatic atomizer that uses the kinetic energy of accelerated steam expansion to atomize the feed oil.
The HW nozzle is roughly a target nozzle, which was developed after studying the atomization mechanism of some foreign nozzles. The target nozzle relies on the raw material to impact the metal target at high speed to achieve primary atomization. To achieve a good atomization effect, the raw material must have a high pressure, which may increase the energy consumption of the device, and the increase in pressure will also bring certain safety hazards. At present, some nozzles in China have very good atomization effects and have advanced and complete atomization mechanisms. For example, the KH series heavy oil atomization nozzles have been tested in practice for many years. From our use, the atomization particle size, pressure drop, catalyst unit consumption, steam consumption, service life and other indicators are very excellent.