Spray nozzle, spray device and method for operating a spray nozzle and a spray device

• US 8,985,478 B2
• Filed: 02/20/2013
• Issued: 03/24/2015
• Est. Priority Date: 05/06/2005
• Status: Active Grant

• Current Assignee: Dieter Wurz
• Original Assignee: Dieter Wurz
• Inventors: Wurz, Dieter
• Primary Examiner(s): Tran, Len
• Assistant Examiner(s): CERNOCH, STEVEN MICHAEL
• Application Number:
  US13/771,849
• Publication Number:
  US 20130161408A1
• Time in Patent Office: 762 Days
• Field of Search: 239/8, 239/143, 239/589.1, 239/590, 239/601, 239104-123, 239398-4345
• US Class Current: 239/8
• CPC Class Codes: B05B 7/0416 with arrangements for mixing one gas and one liquid
• CPC Class Codes: B05B 7/0458 the gas and liquid flows being perpendicular just upstream the mixing chamber
• CPC Class Codes: B05B 7/2489 an atomising fluid, e.g. a gas, being supplied to the discharge device B05B7/2402, B05B7/2483, B05B7/262 take precedence
• CPC Class Codes: B05B 7/2491 characterised by the means for producing or supplying the atomising fluid, e.g. air hoses, air pumps, gas containers, compressors, fans, ventilators, their drives

Abstract

A spray nozzle for two-component flue gas cleaning nozzles. The spray nozzle includes an output or mixing chamber and at least two through bores which lead to the output or mixing chamber and are each connected to a fluid line. At least one through bore is embodied in such a way that it is self-cleaning and/or a cleaning device is provided for at least one through bore.

Claims

1. A method of operating a spray nozzle comprising the steps of:

providing a spray nozzle comprising a mixing chamber and at least two through bores leading to the mixing chamber, each through bore being connected to a fluid line, at least one of the through bores being formed for a self-cleaning process and/or devices are provided for cleaning at least one of the through bores;

providing a pressurized gas supply line leading to the mixing chamber as one of the fluid lines upstream of one of the through bores formed as a pressurized gas inlet bore;

providing a liquid supply line leading to the mixing chamber as one of the fluid lines;

introducing a liquid into the liquid supply line;

introducing a pressurized gas into the pressurized gas supply line to alter a spray characteristic of the liquid exiting the mixing chamber and spray nozzle;

providing a tank for holding a cleaning liquid that is separate from the liquid being supplied to the liquid supply line and separate from the gas being supplied to the pressurized gas supply line;

introducing the cleaning liquid from the tank into the pressurized gas supply line upstream of the mixing chamber;

introducing the cleaning liquid from the tank into the liquid supply line upstream of the mixing chamber; and

passing the cleaning liquid through the liquid supply line and the pressurized gas supply line and then into the mixing chamber before exiting to the spray nozzle.

2. The method according to claim 1, further including introducing steam upstream of the pressurized gas inlet bore.

3. The method according to claim 1, further including introducing abrasively acting dust particles upstream of the pressurized gas inlet bore.

4. The method according to claim 1, further including modulating pressure surges in a liquid to be atomised in the liquid supply line upstream of one of the through bores formed as a liquid inlet bore.

5. The method according to claim 4, further including modulating pressure surges in the ultrasonic range.