Method and device for preparing active particle-containing steam

Patent metadata

Field	Value
Publication number	US-9833760-B2
Application number	US-201313929847-A
Country	US
Kind code	B2
Filing date	Jun 28, 2013
Priority date	Dec 31, 2010
Publication date	Dec 5, 2017
Grant date	Dec 5, 2017

Abstract

A method for preparing high-temperature, active particle-containing steam. The method includes: 1) preparing steam; selecting one or several non-oxidizing gases as a working gas; ionizing the working gas into a plasma working medium by using a plasma generator; and 2) injecting the plasma working medium into a high-temperature steam generator to form high-temperature ionized environment while introducing the steam into the high-temperature steam generator for allowing the steam to contact with the plasma working medium so that the steam is heated and activated to form active particle-containing steam. A device for preparing the high-temperature, active particle-containing steam is also provided.

First claim

The invention claimed is:

1. A method for producing an active particle-containing steam, the method comprising the following steps:
1) preparing a first steam;
2) selecting one or several non-oxidizing gases as a working gas;
3) ionizing the working gas into a plasma working medium by using a plasma generator for generating plasma; and
4) injecting the plasma working medium into a steam generator to form an ionized environment in the steam generator; wherein the steam generator is a separate device from the plasma generator; the steam generator comprises a plasma inlet, an annular steam inlet, an outlet, and a rotary guide vane, and the rotary guide vane is independent from the annular steam inlet and is disposed inside the annular steam inlet; and the plasma working medium is injected into the steam generator via the plasma inlet;
5) introducing the first steam into the steam generator via the annular steam inlet, wherein the first steam is rotated by the rotary guide vane; and
6) allowing the first steam to contact the plasma working medium in the steam generator, wherein the first steam is heated and activated by the plasma working medium to form the active particle-containing steam.

2. The method of claim 1 , wherein the working gas is ionized into the plasma working medium having a temperature of between 3,000 and 12,000 K by the plasma generator.

3. The method of claim 1 , wherein the working gas is nitrogen.

4. The method of claim 2 , wherein the working gas is nitrogen.

5. The method of claim 1 , wherein
the plasma working medium is injected into the steam generator at a speed of between 30 and 100 m/s; and
the first steam is injected into the steam generator at a speed of between 5 and 30 m/s.

6. The method of claim 2 , wherein
the plasma working medium is injected into the steam generator at a speed of between 30 and 100 m/s; and
the first steam is injected into the steam generator at a speed of between 5 and 30 m/s.

7. The method of claim 1 , wherein
between 1 and 4 annular gaps are sequentially arranged at intervals on a housing of the steam generator, wherein the housing is divided into a plurality of sections by the annular gaps, each of the plurality of sections has an inner diameter;
the inner diameters of the plurality of sections are sequentially larger along the direction from the plasma inlet to the outlet; and
a second steam is guided through the annular gaps into the steam generator via nozzles each having an annular cavity by the force of a pressure conveyor and continuously hits a wall of the steam generator.

8. The method of claim 2 , wherein
between 1 and 4 annular gaps are sequentially arranged at intervals on a housing of the steam generator, wherein the housing is divided into a plurality of sections by the annular gaps, each of the plurality of sections has an inner diameter;
the inner diameters of the plurality of sections are sequentially larger along the direction from the plasma inlet to the outlet; and
a second steam is guided through the annular gaps into the steam generator via nozzles each having an annular cavity by the force of a pressure conveyor and continuously hits a wall of the steam generator, wherein a water film is continuously formed on the wall of the steam generator.

9. The method of claim 1 , wherein the first steam is saturated steam.

10. The method of claim 2 , wherein the first steam is saturated steam.

11. A method for producing a steam containing active particles, the method comprising:
1) preparing a first steam;
2) selecting one or several non-oxidizing gases as a working gas;
3) ionizing the working gas into a plasma working medium by using a plasma generator; and
4) injecting the plasma working medium into a steam generator to form an ionized environment in the steam generator; wherein the steam generator is a separate device from the plasma generator; the steam generator comprises a plasma inlet, an annular steam inlet, an outlet, and a rotary guide vane, and the rotary guide vane is independent from the annular steam inlet and is disposed inside the annular steam inlet; and the plasma working medium is injected into the steam generator via the plasma inlet;
5) introducing the first steam into the steam generator via the annular steam inlet, wherein the first steam is rotated by the rotary guide vane; and
6) heating and activating the first steam only by the plasma working medium to form the steam containing active particles.

12. The method of claim 1 , wherein the working gas is ionized into the plasma working medium having a temperature of between 3,000 and 12,000 K by the plasma generator.

13. The method of claim 11 , wherein the working gas is nitrogen.

14. The method of claim 11 , wherein the active particles comprise active H 2 O, active H, and active O.

15. The method of claim 11 , wherein
the plasma working medium is injected into the steam generator at a speed of between 30 and 100 m/s; and
the first steam is injected into the steam generator at a speed of between 5 and 30 m/s.

16. The method of claim 12 , wherein
the plasma working medium is injected into the steam generator at a speed of between 30 and 100 m/s; and
the first steam is injected into the steam generator at a speed of between 5 and 30 m/s.

17. The method of claim 11 , wherein
between 1 and 4 annular gaps are sequentially arranged at intervals on a housing of the steam generator, wherein the housing is divided into a plurality of sections by the annular gaps, each of the plurality of sections has an inner diameter;
the inner diameters of the plurality of sections are sequentially larger along the direction from the plasma inlet to the outlet; and
a second steam is guided through the annular gaps into the steam generator via nozzles each having an annular cavity by the force of a pressure conveyor and continuously hits a wall of the steam generator.

18. The method of claim 12 , wherein
between 1 and 4 annular gaps are sequentially arranged at intervals on a housing of the steam generator, wherein the housing is divided into a plurality of sections by the annular gaps, each of the plurality of sections has an inner diameter;
the inner diameters of the plurality of sections are sequentially larger along the direction from the plasma inlet to the outlet; and
a second steam is guided through the annular gaps into the steam generator via nozzles each having an annular cavity by the force of a pressure conveyor and continuously hits a wall of the steam generator.

19. The method of claim 11 , wherein the first steam is saturated steam.

20. The method of claim 12 , wherein the first steam is saturated steam.

Assignees

• Wuhan Kaidi Eng Tech Res Inst

Inventors

• Chen Yilong
• Zhang Yanfeng
• Cao Minxia
• Li Hong

Classifications

• B01J19/088 Primary

  giving rise to electric discharges (for heating purposes H05B7/00; for the production of ozone C01B13/11, H01T19/00) · CPC title

• C10J3/00

  Production of combustible gases containing carbon monoxide from solid carbonaceous fuels (destructive distillation processes C10B) · CPC title

• C10J2300/1238

  by plasma · CPC title

• C10J2300/0976

  as steam · CPC title

• B01J2219/0894

  Processes carried out in the presence of a plasma · CPC title