JPS60547B2 - gasoline reformer - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a Ganlin reformer, which improves the operability of a hydrogen reformer, which is a problem particularly in cold regions, in a hydrogen generation system for a hydrogen ignition engine.

It is known that hydrogen ignition engines heat a mixture of gasoline and water and cause a decomposition reaction to generate hydrogen, but the main types include catalytic cracking and partial combustion. has been completed in the laboratory.

Of these, ``In the former method, that is, the catalytic cracking method, the hydrogen generation reaction is an endothermic reaction, but because it is an exothermic type, it takes time to reach steady operation. However, there was a problem in that the system could freeze and cause trouble when starting the system.

For this reason, additives have been added to water to make it an antifreeze solution, but since water is a consumable, its handling is complicated, and depending on the amount of additive used, it may have an adverse effect on the catalyst used in the reaction. There was a problem of giving. On the other hand, the latter one,
In other words, in the partial combustion method, since air is introduced into the reaction chamber, the concentration in the generated gas is low, and carbon tends to deposit on the catalyst used in the reaction, which has a negative impact on the engine. .

The present invention aims to provide a Ganlin reforming device that solves these problems.

Hereinafter, one embodiment of the present invention will be described with reference to the drawings.

Reference numeral 1 denotes the main body of the hydrogen reformer, which is formed into a sealed container shape with a heat insulating material 2, and a burner 3 is installed at one end of the main body.
However, an exhaust hole 4 is provided at the other end.

Further, an air supply port 5, a fuel supply port 6, a water supply port 7, and a hydrogen extraction port 8 are provided in other parts of the main body 1. A spark plug 9 is attached to the burner 3, and a pump 11 and a valve 12 are connected to the air cleaner 10.
A mixture of air supplied through the flow control nozzle 14 and fuel supplied from the fuel tank 13 through the flow control nozzle 14 is ignited to generate a flame. Note that a thermosensor 15 is provided at a suitable location on the main body 1, and the function of the above-mentioned valve 12 is changed depending on the temperature detected by the thermosensor 15. The outlet side of the air pump 11 is further connected to the air supply port 5 through a valve 16 and a flow control nozzle 17. Further, a fuel pump 18 is connected to the fuel tank 13,
Fuel is fed into the fuel supply port 6 through a flow control nozzle 19. A water tank 20 supplies water to the water supply port 7 through a water pump 21 and a flow control nozzle 22.

A thermosensor (second thermosensor) 23 is also attached to the water tank 201, and the water pump 21 and the aforementioned valve 16 are controlled based on the detected temperature. A pipe line 24 for guiding engine cooling water is provided in the water tank 20. 25
is a control valve.

A hydrogen storage tank 26 is connected to the hydrogen outlet 8 of the main body 1, and hydrogen is supplied to the engine via the hydrogen storage tank 26. Main body 1
A distribution ring 27 is attached near the periphery of the internal burner 3, and distributes air supplied from the air supply port 5, fuel supplied from the fuel supply port 6, and water supplied from the water supply port 7 to the inside of the main body. It is designed to be injected into the air. Note that the air fuel and water supply pipes are formed in a spiral shape an appropriate number of times as shown in the figure, so that they can easily receive the heat of the burner 3. In the figure, 28 is a catalyst layer filled in the main body 1, and 29 is a spray nozzle. This device configured as described above uses both a partial combustion method and a catalytic cracking method, and its operation will be explained as follows.

First, when starting, it uses a partial combustion method.

That is, water is not supplied, but air and fuel (such as gasoline) are supplied, and at the same time, heating air and fuel are supplied to the burner 3. Then, these are ignited by the spark plug 9 to raise the temperature inside the main body 1. The temperature of the catalyst layer 28 in the main body 1 is detected by the thermosensor 15, and when this temperature reaches a set temperature, the valve 12 is controlled to reduce the heating amount of the burner 3. Next, the water temperature is detected by the thermosensor 23 installed in the water tank 20, and the water is frozen.
Otherwise, operate the water pump 21 to supply water to the water supply port 7. At the same time, the valve 16 is closed to stop the supply of air into the main body 1, thereby causing the main body 1 to operate as a catalytic cracker. This reaction is endothermic, so if the temperature inside the main body drops during the process, the valve 12 will be opened again to increase the amount of air and fuel for heating. On the other hand, when the water in the water tank 20 is frozen, the water pump 21 and valve 16 do not operate, and only the heating power of the heating burner 3 is adjusted. Note that the water tank 20 includes an engine cooling water pipe 2.
4 is provided, so if the engine cooling water is led to this pipe 24, heat exchange will take place with the water in the water tank 20, so when the engine is in the lower position, the water in the water tank 20 will be It will be dissolved. Air, fuel and water that have received heat from the burner 3 are mixed inside the main body 1, and are supplied to the distribution ring 27 and atomized from the spray nozzle 29 provided therein. The hydrogen thus generated is stored in the hydrogen storage tank 26 from the hydrogen outlet 8 and supplied to the engine. In the above-mentioned embodiment, the pipe 24 is provided for passing engine cooling water as a means to thaw the water in the water tank 20 if it freezes, but this is not limited to cooling water. For example, engine exhaust or exhaust gas generated by the main body 1 may be used. In addition, the water tank 20 is designed to prevent overfilling, and has a structure that sufficiently takes into account expansion caused by freezing so that it will not break if it freezes. The present invention employs a partial combustion method in which water is not combined and only air and fuel are supplied when the temperature inside the main body of the hydrogen reformer does not reach a certain value, that is, at startup, due to the above-mentioned configuration,
When the temperature rises, water is also supplied, resulting in a catalytic cracking process.

Further, when the water in the water tank is frozen, only the firepower of the burner is adjusted until the water thaws. These effects make it possible to obtain highly concentrated hydrogen gas even in cold regions. Additionally, the hydrogen storage tank can be smaller than in the case of only the partial combustion method. Furthermore, compared to the case of using only the catalytic cracking method, it has the effect of reducing the time it takes to set up the system.

[Brief explanation of the drawing]

The figure is a system diagram showing one embodiment of the present invention. 1... Body, 3... Burner, 4...
...Exhaust hole, 5...Air supply port, 6...
・Fuel supply connection port, 7...Water supply port ~ 8...
〇Hydrogen outlet, 18...Air cleaner, 13...Fuel tank, 20...Water tank, 26...Skin hydrogen storage tank.

Claims (1)

[Claims] 1 Attach a burner that burns a mixture of air and fuel to the main body of the hydrogen reformer, and install an air supply port,
A fuel supply port, a water supply port, and a hydrogen extraction port are provided, and a thermosensor and a valve that changes the opening area of the flow path connected to the burner when the temperature detected by the thermosensor does not reach a certain value are provided, Furthermore, a second thermosensor is attached to the water tank connected to the water supply port, which controls the water pump and the air supply port when the temperature of the water in the water tank does not reach a certain value. gasoline reformer.