JPS58127001A - Hydrogen and oxygen internal combustion type steam boiler - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION This invention relates to an internal combustion steam power plant that uses hydrogen and oxygen as fuel and oxidizer, respectively, to improve the thermal efficiency of a steam power plant that includes a boiler, a turbine, etc. as its components. It concerns boilers.

In conventional external combustion boilers for steam power plants that use water and steam as working fluids, combustion of fuel takes place in the combustion chamber of the boiler.
The working fluid is heated indirectly through the tube walls of the evaporator tube, superheat tube, and reheat tube arranged around the combustion chamber and in the flow path of the combustion gas. Therefore, only a part of the heat generated by the fuel can be transferred to the working fluid, and the temperature of the working fluid is about too °C due to the limitations of the material strength of the pipe, since the temperature of the pipe is significantly higher than that of the working fluid. It cannot be raised beyond that level. For the reasons mentioned above, conventional external boilers have the disadvantage that they cannot significantly increase the thermal efficiency of steam power plants more than they currently do.

This invention eliminates the heat transfer function of the tube walls in the boiler by burning hydrogen and oxygen in the working fluid, transfers all of the combustion heat of the fuel to the working fluid, and significantly increases the temperature of the working fluid, thereby generating steam power. The object of the present invention is to obtain a boiler device that can improve the thermal efficiency of a plant.

An embodiment in which the present invention is implemented in a steam power plant for steam power generation will be described below based on the drawings.

FIG. 1 is a cycle configuration diagram showing an example of a case where a hydrogen-oxygen internal combustion boiler is combined with a known steam power plant for steam power generation.

Water as a working fluid is pressurized by a pump and enters an internal combustion boiler 2 having a structure in which an evaporating section and a superheating section are integrated or separated. At λ, hydrogen and oxygen are combusted by a plurality of submersible burners and steam burners 20 installed in water and steam in the flow direction of the working fluid and within the flow path cross section, and all of the combustion heat is imparted to the working fluid. The superheated steam generated at λ enters the turbine 3 and performs work, then enters the reheater, where it is reheated by a steam burner.

The reheated steam does work in turbine j and then goes to condenser t.
It enters and condenses into water. Of the condensate, the amount corresponding to the hydrogen and oxygen used for combustion is discharged to the outside by the pump, and the remainder enters the pump l again.

The submersible burner shown in Figure 2, 20 [the basic structure and function of the steam submersible burner are the same] has a hydrogen flow path/4+! and oxygen flow path /j are provided, and hydrogen, 22 and oxygen, 2 are supplied from the outside.
/ are supplied separately, mixed at injection hole /2, and injected into water (or steam), which is a working fluid, and ignited and burned. Therefore, all the heat generated by combustion can be imparted to the working fluid.

Since the combusted oxygen on hydrogen becomes water or steam and is added to the working fluid, there is no need to emit combustion exhaust gas to the outside.

The underwater burner 20 has a flow path/♂ for spouting a flame protection fluid 23 such as steam, oxygen, or water as necessary.
Since this is provided, combustion can be stabilized at the time of starting ignition and other times.

The protective fluid channel can perform a cooling function if necessary to prevent overheating of the burner.

Since the tube wall/3 of the boiler only needs to function as a pressure-tight container, the temperature can be kept below the temperature of the working fluid.

The mechanism of the reheater is also the same as above.

As explained above, this invention installs a submerged burner and a steam submerged burner that burn hydrogen and oxygen in the working fluid of a steam boiler. Because it is able to produce 700 ml of steam, it can generate extremely high-temperature steam with a higher heat utilization rate than conventional external combustion boilers. Therefore, the use of this boiler has the effect of significantly increasing the thermal efficiency of the steam power plant.

[Brief explanation of drawings]

The figures show an embodiment of the internal combustion steam boiler of the present invention. Figure 1 is a cycle configuration diagram of a steam power plant for power generation, and Figure 2 is a sectional view showing the operation of a submerged (and submerged steam) burner. . /... pump, λ... internal combustion boiler, 3.j...
Turbine, G... Reheater, T... Condenser, 7...
Discharge pump, ♂...hydrogen tank, ri...oxygen tank, 10...hydrogen pump, //...oxygen pump, /, 2.
- Generator, /3... Boiler wall, /G... Hydrogen flow path, /!
・・Oxygen flow path, /l・・Injection hole, /7・・Starting spark plug, /♂・・Protection fluid flow path, /・・・Working fluid, 20・
・Underwater (in steam) Burner body, 2/...Oxygen, 22...
Hydrogen, 23...protective fluid

Claims (1)

[Claims] 1. In a steam power plant boiler that uses water and steam as working fluids, hydrogen and oxygen are supplied to the working fluid, combusted in the working fluid, and the heat of combustion is directly transmitted to the working fluid. An internal combustion steam boiler 2 characterized by having a device; an internal combustion steam boiler 3 according to claim 1, having a submerged burner and a steam submerged burner for supplying hydrogen and oxygen into a working fluid and combusting them; An internal combustion steam boiler according to claim 2, which has an underwater burner that spouts a flame stabilizing fluid from around hydrogen and oxygen jet holes for combustion.