Plasma heater

Patent metadata

Field	Value
Publication number	US-10412819-B2
Application number	US-201816104141-A
Country	US
Kind code	B2
Filing date	Aug 17, 2018
Priority date	Feb 17, 2016
Publication date	Sep 10, 2019
Grant date	Sep 10, 2019

Abstract

A plasma heater includes a plasma heating section, an exhaust wasteheat heating section, a gas circulation pump, a water cooling system, and a treatment tank for waste gas and waste water. Flames emitted by plasma torches of plasma generators are directly sprayed onto first water pipes for heating. Exhaust generated after combustion of the plasma torches flows through the tail gas residual heat heating section in the metal cylindrical casing, then flows out of the metal cylindrical casing to enter the gas circulation pump, and flows back into the plasma generators through the gas circulation pump for recycling. After the circulating exhaust operates for more than 10 minutes, the discharged waste gas and waste liquid enter the recovering treatment tank.

First claim

What is claimed is:

1. A plasma heater, comprising a plasma heating section, an exhaust wasteheat heating section, a gas circulation pump, a water cooling system, a treatment tank for waste gas and waste water; and
further comprising:
a plurality of circulating water pipes, wherein two of the plurality of circulating water pipes are communicated through a plurality of first water pipes; a diameter of each of the plurality of first water pipes is smaller than a diameter of each of the plurality of circulating water pipes;
a metal cylindrical casing, wherein the plurality of first water pipes is encased by the metal cylindrical casing;
a plurality of plasma generators, wherein the plurality of plasma generators are mutually communicated and are provided on a lateral inner wall of the metal cylindrical casing encasing the plurality of first water pipes; a flame emitted by a plasma torch of the plasma generator is directly applied, in a radial inward direction perpendicular to a flowing direction of water flowing in the plurality of first water pipes, to the first water pipes and perpendicular through a direction of flow of exhaust generated after combustion of the plasma torch for heating;
the exhaust wasteheat heating section comprises the metal cylindrical casing and the plurality of first water pipes; the plasma heating section comprises the metal cylindrical casing, the plurality of first water pipes and the plurality of plasma generators;
the water cooling system is connected to the plasma generators; and
power is supplied to the plurality of plasma generators by a plasma power supplier;
the gas circulation pump is arranged on a water inlet end of the metal cylindrical casing and is communicated with the metal cylindrical casing and the treatment tank for waste gas and waste water; and
exhaust generated after combustion of the plasma torch flows through the exhaust wasteheat heating section in the metal cylindrical casing, then flows out of the metal cylindrical casing and enters into the gas circulation pump, and flows back into the plasma generators through the gas circulation pump for recycling; and
recycled exhaust works for more than 10 minutes before entering into the treatment tank for waste gas and waste water,
wherein a first connecting flange is arranged between the plasma generators and the bottom of the metal cylindrical casing on the plasma heating section; an insulation pad is arranged on the first connecting flange; the metal cylindrical casing and the first water pipes act as suspension electrodes by way of the insulation pad.

2. The plasma heater of claim 1 , wherein the plurality of first water pipes are parallel mutually and have clearances mutually; and a diameter of the first water pipes is between 20 mm and 60 mm.

3. The plasma heater of claim 2 , wherein the plasma generator is a DC plasma torch with an upward nozzle; and a working gas of the plasma generators is a mixture of air and water vapor.

4. The plasma heater of claim 1 , wherein the plasma generator is a DC plasma torch with an upward nozzle; and a working gas of the plasma generators is a mixture of air and water vapor.

5. The plasma heater of claim 1 , wherein the water cooling system comprises a water cooling tank.

6. The plasma heater of claim 1 , wherein a second connecting flange and a fourth connecting flange are arranged in the water inlet end and a water outlet end of the metal cylindrical casing, respectively; and a third connecting flange is arranged at a junction of the plasma heating section and the exhaust wasteheat heating section of the metal cylindrical casing.

7. The plasma heater of claim 1 , wherein a circulating water pump is arranged in the water inlet end of the circulating water pipes.

8. The plasma heater of claim 1 , wherein a fifth connecting flange is arranged in the water inlet and outlet ends of the circulating water pipes; and an insulation pad is arranged on the fifth connecting flange.

9. The plasma heater of claim 1 , wherein a sixth connecting flange is arranged for exhaust emission between the metal cylindrical casing, the gas circulation pump and the treatment tank for waste gas and waste water.

10. The plasma heater of claim 1 , wherein a circulating water pipe inlet is arranged in the water inlet end of the circulating water pipes and a circulating water pipe outlet is arranged in a water outlet end of the circulating water pipes.

Assignees

• Univ Qilu Technology

Inventors

• Wang Shouguo

Classifications

• F24H1/00

  Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters (steam boilers F22B) · CPC title

• H05H1/28 Primary

  Cooling arrangements · CPC title

• H05H1/44

  using more than one torch · CPC title

• F24D15/00 Primary

  Other domestic- or space-heating systems · CPC title

• H05B7/185

  Heating gases for arc discharge (gas-filled discharge tubes H01J37/32) · CPC title