JPS5922098Y2 - Liquid fuel gasification conversion equipment - Google Patents

Description

[Detailed description of the invention] This invention can be used in ordinary households or small-scale factories to easily extract fuel gas using a steam reforming catalyst using liquid fuel such as kerosene or light oil and water, and to use it in various gas-fueled appliances. This relates to a relatively small-sized liquid fuel gasification conversion device used for evaporation of liquid fuel, and its purpose is to suppress tar depositing on the liquid evaporation surface by spraying aluminum onto the evaporation surface in the preheating section that evaporates the liquid fuel.

A schematic diagram of a liquid fuel gasification converter to which the present invention is applied is shown in FIG. 1 below.

In FIG. 1, the center is the gasification converter 1.
It is made of heat-resistant metal.

The center of the gasification converter 1 is a reaction chamber 2 filled with a catalyst 3 for steam reforming.

A heater 4 that heats the reaction chamber 2 is built into the outer periphery of the reaction chamber 2 .

During the reaction, electricity is applied to maintain the reaction chamber 2 at a predetermined temperature.

Furthermore, a steam heating chamber 5 is provided around the outer periphery of the heater 4 in order to effectively utilize the heat released to the outside.

Further, a heat insulating material 6 is wrapped around the outer periphery to effectively utilize heat.

To produce gas in this gasification converter 1, liquid fuel is led to a liquid fuel evaporator 13 through an oil tank 7 for storing raw materials, an oil feed pipe 9, and an oil feed pump 10, and is vaporized.

On the other hand, the purified water passes through the water tank 8, the water pipe 11, the water pump 12, and the filter 14, and while exchanging heat with the heated gas in the double pipe 15, the water passes through the outer pipe 16.
It passes through and enters the steam heating chamber 5.

The water that has become high-temperature steam flows from the communication hole 17 to the reaction chamber 2.
The fuel is mixed with vaporized liquid fuel in the liquid fuel evaporator 13, sent to the catalyst 3, and subjected to steam reforming.

The gas produced by steam reforming passes through the inner tube 18 of the double tube 15 described above and is cooled by water.

Due to cooling, the excess water vapor that has condensed and unreacted liquid fuel are separated from the gas in the branch pipe 22, and when a certain amount of residual liquid has accumulated in the residual water reservoir 23, it is sent to the gasification converter 1 again by the water pump 12. It will be done.

On the other hand, the produced gas enters the gas reservoir 19.

A pressure reducing check valve 21 is installed in the gas reservoir before the population 20,
This is to prevent the generated gas from returning to the reaction chamber 2 again.

The gas temporarily stored in the gas reservoir 19 is depressurized through the pressure reducing valve 24 during use, and is taken out of the system through the air pipe 25.

Note that the air pump 26 that sends air periodically pumps the reaction chamber 2.
The air is poured into the catalyst through the air pipe 27, and the carbon deposited on the catalyst surface is removed by 600 to 70
Incinerate at a temperature of 0°C.

The lid 28 covering the upper part of the reaction chamber is placed between the flange 29 at the upper part of the gasification converter 1 main body and the heat-resistant backing 30.
It is fixed with bolts 31 and nuts 32.

An oil feed pipe and an air feed pipe 27 are connected to the center of the lid 28, and these communicate with the liquid fuel evaporator 13 on the back side of the lid.

In the liquid fuel gasification conversion device with the above configuration and function,
When liquid fuel is repeatedly evaporated in the liquid burnt evaporator 13 in FIG.

When the accumulated amount of tar increases, sufficient liquid fuel is not evaporated, and the amount of evaporation is not constant.

The present invention solves the above problems.

That is, the present invention attempts to suppress tar accumulation on the evaporation surface by spraying aluminum onto the surface of the liquid fuel evaporator.

An example thereof is shown in FIGS. 2 and 3.

In these figures, the same numbers as above indicate the same members, and the surface of the liquid fuel evaporator 13a is sprayed with aluminum.

By spraying aluminum onto the surface of the liquid fuel evaporator in this manner, the surface area of the evaporation surface is dramatically increased, and the balance between the liquid fuel and the evaporation surface is improved.

Therefore, the time required for evaporation of liquid fuel is shortened, and as a result, the amount of tar accumulated is extremely small, and stable evaporation can be performed.

As is clear from the above explanation, in liquid fuel gasification conversion equipment, tar accumulates on the evaporation surface of the liquid fuel evaporator, causing the amount of evaporation of the liquid fuel to be inconsistent, resulting in variations in the amount of gas produced. In contrast, according to the present invention, by spraying aluminum on the evaporation surface, tar accumulation can be suppressed, the amount of tar accumulated can be greatly reduced, and gas can be stably supplied.

[Brief explanation of the drawing]

Fig. 1 is a schematic diagram of a liquid fuel gasification converter to which the present invention is applied, Fig. 2 is a sectional view of the main part of a liquid fuel gasification converter according to an embodiment of the present invention, and Fig. 3 is a schematic diagram of a liquid fuel gasification converter to which the present invention is applied. FIG. 2 is a plan view of a liquid fuel vapor in the fuel gasification conversion device. 3...Steam reforming catalyst, 9...
...oil pipe, 11...water pipe, 13 a...
...Evaporator.

Claims (1)

[Scope of utility model registration request] By mixing liquid fuel such as kerosene or light oil with water, rhodium Rh
, a device for converting liquid fuel into gasified fuel through a steam reforming catalyst such as platinum Pt, characterized in that the surface of an evaporator for evaporating liquid fuel is sprayed with aluminum.