Figure 6.1 illuminates the experimental setup for the synergistic effect of resistance/inhibition on the syngas explosion. The main structure has been mentioned in the previous experiments. The pressure spray system and wire mesh explosion-resistant system were added to the experimental apparatus. The pressure spray system was composed of fine spray nozzle, one-way valve, solenoid valve and water storage tank. The nozzle was installed on the lower end of top flange through threaded connection method. The water storage tank was filled with the deionized water to eliminate the factors affecting explosion inhibition and the spray pressure was provided by the gas cylinders. The mist parameter was altered by changing the nozzle type and spray pressure. The moment and duration of spray were achieved by controlling the opening and closing of solenoid valve, further changing spray amount at the upper end. Under the action of pressure, the fine atomization solid nozzle conducted spray at an angle of 60°. The cross section of the vessel was 150 mm × 185 mm. The internal high of vessel was 910 mm and the height of the nozzle was 40 mm after connecting to the top flange. By calculation, the distance between the nozzle and the wire mesh explosion-resistant system was 210 mm. At a spray angle of 60°, the corresponding mist zone width at a height of 210 mm was 144.6 mm and it was less than the wall surface distance. This indicates that the water mist produced by pressure spray was mainly distributed inside the vessel. However, the movement velocity of micrometer scale mist was sharply reduced as the distance increased due to the drag force although the mist near the nozzle had a high movement velocity. And most of the mist would be suspended in the upper end of the flame resistance system within the millisecond spray and standing times.