The performance of steam-jet vacuum pump was investigated by changing the ratio of secondary to primary throat area, relative position of the steam nozzle and the taper of the mixing section.

It hums like a bee on the tea-table, and the steam rises in a little jet from a tiny hole in the top. The boiling water comes out of a tap at the bottom.

Finally high pressure steam jet cleaning heavy oil thermal management in new ways to promote the use in the field and made good cleaning effect.