JPH03272399A - Gasifying device for liquefied natural gas - Google Patents

Abstract

PURPOSE:To provide a small erection energy source by dividing a gasifying device for liquefied natural gas into several units, mounting each unit on a moving trailer, and freely connecting and disconnecting a piping, running between the trailers, to and from the trailers. CONSTITUTION:A gasifying device comprises an LNG storage trailer 1, an LNG vaporizing trailer 2, a natural gas buffer tank trailer 3 to store gasified gas, a hot water boiler trailer 4, an auxiliary tool trailer, on which a flare stack is placed, and a buss 6 for control. The gasifying device forms units separated classified by a trailer, each trailer is secured in a position, and arrangement is effected only by connecting a piping and a wiring between the trailers. This constitution carries out separation arrangement according to the terrain of a movement destination, and uses a gasifying device for lique fied natural gas as an erection energy source movable to an arbitrary and urgent place of disaster relief and the like.

Description

[Detailed description of the invention] (Industrial application field) The present invention relates to a mobile liquefied natural gas vaporization device.

(Conventional technology) In order to supply natural gas to the point of demand, the size of the vibrator is determined so that it can supply somewhat more than the average annual demand for boat fishing, and the gas vibrator is used over long distances. There is a need to grind.

It is quite difficult to run a gas vibrator over such a long distance, but if you want to store or transport natural gas as it is, the volume is extremely large and it is impractical, so it is difficult to condense natural gas. It has become common practice to transport and store the liquid by liquefying it.

When about 600 rrt of natural gas is condensed, it becomes an ITrL liquid, so natural gas is generally used after being liquefied. However, unlike liquefied petroleum gas made of propane and butane, natural gas has a low critical temperature (approximately -73° C.), so it is impossible to liquefy natural gas by mere pressurization at room temperature.

Therefore, liquefied natural gas vaporization equipment is somewhat complex and large-scale, so it is a fixed type that is installed in a fixed location.In addition, it is necessary to have capacity for city gas, so the vaporization capacity is large-scale. Until now, there was nothing that could be moved.

(Problems to be Solved by the Invention) Since liquefied natural gas vaporization equipment is of a fixed type, it cannot be used as a relatively small-scale installed energy source for disaster relief, local expositions, and the like.

The present invention has been made in view of the above circumstances, and its purpose is to provide a movable liquefied natural gas vaporizer with a reduced vaporizing capacity so that liquefied natural gas can be used as a relatively small-scale installed energy source. The purpose of the present invention is to provide a vaporization device.

(Means for Solving the Problems) In order to achieve the above object, the liquefied natural gas vaporization device of the present invention has several features regarding the vaporization device necessary for returning liquefied natural gas to original natural gas in a gaseous state. The system is configured to be separated into units, and each unit is installed on a mobile trailer, and the piping and wiring between the trailers can be disconnected from each other.

A mobile trailer on which the necessary units constituting the vaporizer are installed is towed and moved to a place where natural gas is required, and the equipment of each necessary unit of these mobile trailers is electrically and mechanically connected to each other. In this way, a liquefied natural gas vaporization device is obtained.

(Embodiments) Preferred embodiments of the present invention will be described in detail below with reference to the drawings.

A vaporizer according to an embodiment is shown across FIG. 1 and FIG. 2.

This mobile liquefied natural gas (hereinafter referred to as LNG) vaporization device consists of an LNG storage tank trailer 1 that stores LNG;
A LNG evaporator trailer 2 for evaporating LNG, a natural gas buffer tank trailer 3 for storing vaporized gas, a hot water boiler trailer 4 consisting of a hot water boiler and a hot water tank for generating a heat source for heating the natural gas, a flare stack, and tools. Alternatively, it consists of an auxiliary equipment trailer 5 carrying auxiliary equipment and a control bus 6 for controlling and managing the vaporizer.

LNG storage tank) Regarding LNG supply to railer 1,
It will be carried out using tank truck 7. In this way, the liquefied natural gas vaporization system consists of separate units for each trailer, and all that is required is to fix each trailer in a predetermined position and connect the piping and wiring between the trailers. It can be easily installed and can be used especially in emergency situations such as disaster relief.

The LNG transported by the LNG tank truck 7 is transferred to the LNG storage tank trailer 1 by the LNG receiving pump 8 loaded on the auxiliary equipment trailer 5. And LN of LNG storage tank trailer 1
G is vaporized in the LNG evaporator as necessary, and the natural gas vaporized in the LNG evaporator trailer 2 is passed through a natural gas heater that receives heat from the hot water tank of the hot water boiler trailer 4, and is then vaporized into the LNG evaporator. The odor is added to the odor by an odor device installed on the trailer 2, and the odor is transferred to the buffer tank of the buffer trailer 3. Natural gas for fuel will be supplied from the buffer tank of this buffer tank trailer 3.

The hot water boiler loaded on the hot water boiler trailer 4 naturally receives natural gas from the tank of the buffer tank trailer 3 and uses it as fuel.

The water sprinkler pump 9 used for the evaporator of the LNG evaporator trailer 2 is lowered onto the ground, but since it is only the pump body, it is relatively small, and when transported, it is loaded on the auxiliary trailer 5. Control bus 6 is LNG tank truck 7
To operate the LNG receiving pump 8 when supplying liquefied natural gas from the LNG storage tank trailer 1 to the LNG storage tank trailer 1, to control the hot water boiler to control the hot water tank temperature of the hot water boiler trailer 4, or to the LNG evaporator trailer 2. In order to keep the temperature of the loaded natural gas heater constant, the hot water pump is controlled to circulate the hot water in the hot water tank loaded on the hot water boiler trailer 4 to the natural gas heater, and the water sprinkler pump 9 and fire extinguishing equipment are monitored and controlled. ing.

(Effects) As explained in detail above, according to the liquefied natural gas vaporization device of the present invention, the vaporization device necessary for returning liquefied natural gas to the original natural gas in a gaseous state can be separated into several units. These units can be installed on mobile trailers, and each component can be moved and installed, so each component can be separated and placed according to the terrain of the destination, and can be used for expos, events, and disasters. It can be used as a movable erected energy source for rescue, remote areas, etc.

Moreover, since it can be moved by a mobile trailer, it can be reused in another location by simply disconnecting the wiring and piping between the mobile trailers, which also leads to cost reduction.

[Brief explanation of drawings]

1 and 2 show an embodiment of a liquefied natural gas vaporization device according to the present invention, and FIG. 1 is a system diagram showing a liquefied natural gas receiving portion of the vaporization device according to the embodiment; Figure 2 is a system diagram showing the portion from the LNG storage tank trailer that receives LNG to the final state where it is returned to natural gas. 7... LNG tank truck 8...
・・・・LNG receiving pump 9・・・・・・・・・Sprinkle pump

Claims (1)

[Claims] The vaporization equipment necessary to return liquefied natural gas to its original gaseous state is separated into several units.
A liquefied natural gas vaporization device characterized in that each of these units is installed on a moving trailer, and the piping and wiring between the trailers can be disconnected from each other.