Device and method for synthesizing zinc oxide from zinc steam in process of treating metallurgical zinc-containing ash

The invention discloses a device and a method for synthesizing zinc oxide from zinc steam in a process of treating metallurgical zinc-containing ash. In the process of treating zinc-containing ash through coal gasification suspension smelting, superheated water vapor is sprayed into a mixed gas flow of 1200-1500 DEG C high-temperature zinc vapor and coal gas in an uptake flue from a water vapor jet flow spraying inlet, the water vapor is ionized at high temperature to generate oxygen and hydrogen, the oxygen and the zinc vapor react to generate zinc oxide, then the high-temperature airflow enters a two-stage cyclone separator for zinc oxide recovery, afterheat recovery is carried out, dust is recovered again through a bag-type dust collector after afterheat recovery, and the tail gas is processed and utilized after passing through an induced draft fan. According to the method for synthesizing zinc oxide by spraying water vapor into zinc vapor with high gas content, the zinc oxide is synthesized from the zinc