Apparatus for raising the temperature of superheated steam and ultra-high temperature steam generator

Patent metadata

Field	Value
Publication number	US-11054130-B2
Application number	US-201916434811-A
Country	US
Kind code	B2
Filing date	Jun 7, 2019
Priority date	Jun 11, 2018
Publication date	Jul 6, 2021
Grant date	Jul 6, 2021

Abstract

An apparatus for raising the temperature of superheated steam includes an inlet into which superheated steam is introduced, a body to raise the temperature of the superheated steam heated by an external heat source and introduced through the inlet, and an outlet provided inside the body and discharging the superheated steam temperature-raised by the body to the outside, in which an inner surface of a sidewall of the body is formed with an inner protrusion for heating the superheated steam while spirally rotating the superheated steam. The Apparatus enhances the flow of superheated steam in the process of raising the temperature by further heating superheated steam caused by waste heat generated in a waste combustion apparatus or the like, and at the same time, increases the area of contact of the superheated steam with a heat source to improve the temperature-raising efficiency.

First claim

What is claimed is:

1. An apparatus for raising the temperature of superheated steam comprising:
an inlet into which superheated steam is introduced;
a body to raise the temperature of the superheated steam heated by an external heat source; and
an outlet provided inside the body and discharging the superheated steam temperature-raised by the body to the outside,
wherein an inner surface of a sidewall of the body is formed with an inner protrusion for heating the superheated steam while spirally rotating the superheated steam,
wherein the inner protrusion protrudes from the inner surface of the sidewall of the body and has a spiral projection shape extending obliquely toward an inner surface of a bottom of the body,
wherein a lower end of the outlet has an opening shape that is opened toward the inner surface of the bottom of the body in a state of being separated from the inner surface of the bottom of the body.

2. The apparatus of claim 1 , wherein the superheated steam introduced through the inlet is induced as a first swirl while being spirally rotated by the inner protrusion, thereby primarily allowing a flow of the superheated steam to be enhanced, and at the same time, allowing heating efficiency to be increased by increasing a contact area with the inner protrusion heated by the external heat source.

3. The apparatus of claim 2 , wherein the superheated steam guided to the inner surface of the bottom of the body by the inner protrusion is introduced into the lower end of the outlet having the opening shape that is opened toward the inner surface of the bottom of the body, and is discharged to the outside, thereby increasing heat discharge efficiency.

4. The apparatus of claim 1 , wherein a protruding height of the inner protrusion is larger than a diameter of the inlet.

5. The apparatus of claim 1 , wherein the outlet is connected to a hydrogen generator for electrolyzing water using an electrochemical cell, and the superheated steam temperature-raised is supplied to the hydrogen generator.

6. The apparatus of claim 1 , wherein the body has a cylindrical structure whose cross-section perpendicular to a gravity direction is circular, and
wherein the inner protrusion protrudes in a direction perpendicular to a tangent of the cylindrical structure.

7. The apparatus of claim 1 , wherein a connecting portion between the inner protrusion and the inner wall of the sidewall has a contact surface with the superheated steam, with the contact surface having a concave shape.

8. The apparatus of claim 1 , wherein a bottom protrusion is formed on the inner surface of the bottom of the body to rise the superheated steam so as to guide the superheated steam to the outlet.

9. The apparatus of claim 1 , wherein the inner surface of the bottom of the body has a cone shape inverted with respect to the lower end of the outlet.

10. The apparatus of claim 9 , wherein the superheated steam is concentrated in a vertex region of the inner surface of the bottom of the body having a cone shape, and then rises and is introduced into the outlet to discharge to the outside, thereby increasing heat discharge efficiency.

11. An apparatus for raising the temperature of superheated steam comprising:
an inlet into which superheated steam is introduced;
a body to raise the temperature of the superheated steam heated by an external heat source; and
an outlet provided inside the body and discharging the superheated steam temperature-raised by the body to the outside,
wherein an inner surface of a sidewall of the body is formed with an inner protrusion for heating the superheated steam while rotating the superheated steam along the inner surface of the sidewall,
wherein an end of the inner protrusion has a shape bent upward in parallel with the inner surface of the sidewall of the body.

12. The apparatus of claim 11 , wherein the superheated steam introduced through the inlet and induced as a first swirl by the inner protrusion is induced as a second swirl by the end of the inner protrusion, thereby secondarily allowing a flow of the superheated steam to be enhanced, and at the same time, allowing heating efficiency to be increased by increasing a contact area with the inner protrusion heated by the external heat source.

13. An apparatus for raising the temperature of superheated steam comprising:
an inlet into which superheated steam is introduced;
a body to raise the temperature of the superheated steam heated by an external heat source;
an outlet provided inside the body and discharging the superheated steam temperature-raised by the body to the outside; and
a steam pipe forming a flow path through which the superheated steam flows and connected to the inlet,
wherein the steam pipe is formed on an outer surface of the body, forms a flow path through which the superheated steam flows in a meandering shape along a horizontal direction with respect to an outer circumferential surface of the body, and surrounds the outer circumferential surface of the body.

14. The apparatus of claim 13 , wherein the steam pipe comprises:
an upward pipe through which the superheated steam flows from a lower toward an upper with respect to the outer peripheral surface of the body;
a downward pipe through which the superheated steam flows from the upper toward the lower with respect to the outer peripheral surface of the body; and
a connecting pipe to interconnect an upper end of the upward pipe and an upper end of the downward pipe or to interconnect a lower end of the upward pipe and a lower end of the downward pipe,
wherein the steam pipe is formed by repeatedly disposing the upward pipe and the connecting pipe, and the downward pipe and the connecting pipe with respect to the outer peripheral surface of the body.

15. A temperature steam generator equipped with a coil type superheater comprising:
a superheater comprising an inlet port connected to an exit side of a boiler for introducing steam discharged from an exit of the boiler, an outlet port for discharge steam introduced through the inlet port, a temperature-raising pipe for interconnecting the inlet port and the outlet port and forming a coil-shaped flow path for raising the temperature of the steam introduced through the inlet port, a cylindrical first inner wall having an outer circumferential surface of a first diameter facing an inner circumferential surface of the temperature-raising pipe forming the coil-shaped flow path, or a cylindrical second inner wall having an outer circumferential surface of a second diameter smaller than the first diameter facing the inner circumferential surface of the temperature-raising pipe, and a cylindrical outer wall having an inner circumferential surface of a third diameter larger than the first diameter facing an outer circumferential surface of the temperature-raising pipe; and
a furnace having a space into which the superheater is built, the furnace comprising a gas inlet port into which combustion gas is introduced, and a gas outlet port through which the combustion gas is discharged, the combustion gas introducing from the gas inlet port and transferring convection heat to the superheater.

16. The steam generator of claim 15 , wherein the superheater further comprises:
a downward straight pipe connected to the inlet port, the downward straight pipe causing the steam discharged from the exit of the boiler to descend and to be guided toward the temperature-raising pipe; and
an upward straight pipe connected to a lower end of the temperature-raising pipe connected to the downward straight pipe, the upward straight pipe causi

Assignees

• Korea Inst Energy Res

Inventors

• Park Seong Ryong
• Cho Chong Pyo
• Kim Jeong Geun
• Nho Nam Sun

Classifications

• F22B1/003

  using combustion of hydrogen with oxygen · CPC title

• F22G7/06

  in furnace tubes · CPC title

• F22G1/16 Primary

  by using a separate heat source independent from heat supply of the steam boiler, e.g. by electricity, by auxiliary combustion of fuel oil · CPC title

• F22G3/00 Primary

  Steam superheaters characterised by constructional features; Details or component parts thereof · CPC title