KR102526244B1 - Ammonia Leak Evacuation Structure for vessel AND VESSEL INCLUDING THE SAME - Google Patents

Abstract

The present invention relates to an ammonia leakage evacuation structure of a ship and a ship having the same, which provides an evacuation space for ammonia gas in the ship, and is installed inside the shelter box having a sealed door and the shelter box, and water for air cleaning It includes a washing water injection pipe for spraying, and a breathing air injection pipe installed inside the shelter box and spraying and supplying fresh air. The present invention is a ship's ammonia leak escape structure that sufficiently cleans the body from the generation of a basic solution when ammonia leaks, protects the body for a long time, supplies breathable air, and blocks ammonia inflow from the ammonia leak environment, and equipped with the same provide ships.

Description

Ammonia Leak Evacuation Structure for vessel AND VESSEL INCLUDING THE SAME}

The present invention relates to an ammonia leakage evacuation structure of a ship and a ship equipped with the same, and more particularly, to an ammonia leakage evacuation structure of a ship that can prevent and reduce damage in preparation for ammonia leakage in a place where ammonia is used.

As the IMO decided to reduce carbon emissions by 40% for ships ordered after 2030 compared to ships ordered in 2008 and by 50% by 2050, the need for alternative fuels is increasing. Therefore, ammonia, a carbon-free fuel, is attracting worldwide attention.

In order to meet the EEDI regulations that are being implemented to reduce greenhouse gas emissions from ships, it has been responding by improving the efficiency of ships mainly through technical means such as enlarging ships and improving the efficiency of hulls and propulsion devices. However, many technical measures have already been applied and further The expected amount of ship greenhouse gas reduction is not high.

Another greenhouse gas reduction method includes operational measures. Since the fuel consumption of a ship increases rapidly as the sailing speed increases, low-speed sailing is one of the most representative carbon dioxide reduction means. The shipping industry has already lowered the operating speed than in the past in order to save fuel consumed by ships, and the effect of low-speed operation has been sufficiently proven.

However, the low-speed operation of ships reduces the amount of cargo transported per ship, so additional ships are required to deliver the cargo in a timely manner, which increases the investment cost of the shipping company. In addition, when operating at low speed below the minimum engine load level of the ship, it may adversely affect the engine, and since there is a limit to the engine load that can be lowered, complete decarbonization is impossible.

Another way to reduce carbon emissions from ships is to use alternative fuels with low CO2 emissions. In particular, LNG fuel is attracting attention as a next-generation clean ship fuel because it can respond to sulfur regulations in 2020 and can reduce fine dust and carbon dioxide.

In the past, boil-off gas generated from LNG carriers was used as the main fuel for ships.

However, since LNG is essentially a fossil fuel and emits carbon dioxide, there is a limit to complete decarbonization (about 20% reduction possible). Therefore, despite technical and operational measures, it is inevitable to replace ship fuel with carbon-neutral fuel for complete decarbonization of shipping in the long term.

Representative carbon-neutral fuels include biodiesel, biogas, methanol, hydrogen, and ammonia. Among them, ammonia is easy to store and transport, easy to mass-produce through the Haber-Bosch method, and is superior to other carbon-neutral fuels. Because of its economic feasibility, research and development are being actively conducted to use ammonia as a fuel.

When ammonia is used as a fuel, it has advantages as a carbon-neutral fuel, but it is difficult to handle due to the chemical characteristics of ammonia. For example, when ammonia fuel leaks in an ammonia fuel-propelled ship, safety problems for crew members due to toxicity are expected.

In a conventional ship, an EYE SHOWER, etc., was installed near the handling equipment of toxic chemical elements (UREA CHEMICAL) to immediately wash the material in case of contamination with hazardous substances, but it can only be washed did

Although this existing washing device can be applied to ships using ammonia as fuel, since ammonia is exposed to the air in the form of a gas, considerable problems are expected in the respiratory system.

Korea Registered Utility Model Publication No. 20-0483927 (Evacuation facilities for marine structures, published on July 11, 2017)

The present invention is an ammonia leakage escape structure of a ship that sufficiently cleans the body from the generation of a basic solution when ammonia leaks, protects the body for a long time, supplies breathable air, and blocks ammonia inflow from the ammonia leak environment, and a ship equipped with the same is to provide

An ammonia leakage evacuation structure of a ship according to an embodiment of the present invention is installed adjacent to an ammonia facility or equipment system in a ship, provides an evacuation space for ammonia gas in the ship, and is a shelter equipped with a sealed door. box; a washing water injection pipe installed inside the shelter box and spraying water for air washing; and a breathing air injection pipe installed inside the shelter box and spraying and supplying fresh air.

In addition, an air outlet and a water outlet may be further provided in the shelter box.

In addition, an air compressor for pressurizing and supplying air to the breathing air injection pipe; an air reservoir connected to the air compressor; and an air pipe connected to the breathing air injection pipe via the air compressor and the air reservoir.

In addition, a first air valve for regulating air flow from the air compressor to the air reservoir; and a second air valve for regulating air flow from the air reservoir side to the breathing air injection tube side.

In addition, an evacuation detection sensor installed in the shelter box and detecting an evacuee; And it is connected to the evacuation detection sensor may include a control unit for automatically controlling the opening and closing of the second air valve.

In addition, when an evacuee is detected inside the shelter box, the control unit may open the second air valve to supply fresh air to the shelter box and maintain a higher atmospheric pressure inside the shelter box than outside.

In addition, an ammonia sensor installed inside the ship to detect leakage of the ammonia gas; And it may further include an ammonia alarm unit that is connected to the ammonia sensor to notify the leakage detection of the ammonia gas and provides the communication to the control unit.

In addition, a personal terminal connected to the ammonia alarm unit through the control unit may be further included.

In addition, an exhaust hood installed adjacent to the ammonia facility or device system may be further included.

In addition, when leakage of the ammonia gas is detected by the ammonia sensor, the exhaust hood may be automatically operated through the control unit.

On the other hand, a ship according to another embodiment of the present invention is provided with the ammonia leakage escape structure of the ship described above.

The present invention described above, in case of ammonia leakage, sufficiently cleans the body from basic solution generation, protects the body for a long time, supplies breathable air, and evacuates ammonia leakage from a ship that blocks ammonia inflow from the ammonia leakage environment. It is possible to provide a structure and a ship equipped with it.

1 is a block diagram of an ammonia leakage evacuation structure of a ship according to an embodiment of the present invention.
FIG. 2 is a conceptual diagram in which an ammonia sensor and an alarm unit are added in FIG. 1 .
FIG. 3 is a conceptual diagram illustrating air discharge and water discharge in FIG. 2 .

Hereinafter, various embodiments of the present invention will be described with reference to specific embodiments shown in the accompanying drawings.

1 is a block diagram of an ammonia leakage evacuation structure of a ship according to an embodiment of the present invention.

Referring to FIG. 1, the ammonia leakage evacuation structure of a ship according to an embodiment of the present invention provides an evacuation space for ammonia gas in a ship and includes a shelter box 100 having a sealed door 101, a shelter box It includes a washing water injection pipe 110 installed inside the 100 and spraying water for air cleaning, and a breathing air injection pipe 120 installed inside the shelter box 100 and spraying and supplying fresh air. .

The ship's ammonia leakage evacuation structure is installed adjacent to the place 10 of the ammonia facility or device system in the ship to provide workers with a safe escape space from gas leakage, and the workers wash the contaminated parts of ammonia gas with water, fresh It makes breathing of air possible.

The shelter box 100 provides a closed space where workers can evacuate and is protected from ammonia gas exposed from the outside, and is a box member or compartment space installed adjacent to the place 10 where there is a risk of leakage of ammonia gas. It can be composed of a partition to make, and is provided with a closed structure on all sides except for the sealed door 101.

The shelter box 100 is provided with an air outlet 103 and a water outlet 105 in addition to the airtight door 101 that creates a closed structure while being opened. The air outlet 103 is connected to a passage for discharging polluted air to the outside when fresh air is supplied (refer to the solid line arrow in FIG. 3), and the water outlet 105 is used to discharge contaminated water that has washed the contaminated area. (refer to the dotted line arrow in FIG. 3).

A washing water injection pipe 110 and a breathing air injection pipe 120 are installed in the shelter box 100 .

First, the washing water injection pipe 110 is used by evacuees in the evacuation space to wash the basic solution contaminated area generated when ammonia leaks, and is located at the front end ahead of the spray nozzles of the washing water injection pipe 110. When the flushing water valve 111 is opened, the flushing water is sprayed. Conversely, when the flushing valve 111 is closed, the spraying of the flushing water is stopped.

The breathing air injection pipe 120 is disposed on the opposite side of the washing water injection pipe 110 and is configured to pressurize and supply air from the outside.

In the breathing air injection pipe 120, an air compressor 121 for pressurizing and supplying air to the breathing air injection pipe 120, an air reservoir 122 connected to the air compressor 121, an air compressor 121, and The air pipe 125 connected to the breathing air injection pipe 120 via the air reservoir 122 and the first and second air valves 126 and 127 are connected.

The air compressor 121 pressurizes air and serves to pressurize and store the air in the air reservoir 122, and is connected to an external vent for fresh supply in the ship.

The air reservoir 122 stores air so that air is maintained at a constant pressure and supplied to the breathing air injection pipe 120, and a first air valve 126 is installed on the inlet side, and a second air valve on the outlet side ( 127) is installed.

The first air valve 126 regulates air flow from the air compressor 121 to the air reservoir 122 side, and the second air valve 127 controls air flow from the air reservoir 122 side to the breathing air injection pipe 120 side. control the flow.

The first and second air valves 126 and 127 may be fully automatic using solenoids.

FIG. 2 is a conceptual diagram in which an ammonia sensor and an alarm unit are added in FIG. 1 , and FIG. 3 is a conceptual diagram illustrating air discharge and water discharge in FIG. 2 .

2 and 3, in this embodiment, an evacuation detection sensor 130 installed in the shelter box 100 and detecting an evacuee, and a second air valve 127 connected to the evacuation detection sensor 130 A control unit 131 for automatically controlling the opening and closing of may be further included.

When an evacuee is detected inside the shelter box 100, the control unit 131 opens the second air valve 127 to supply fresh air to the shelter box 100, and makes the shelter box 100 inside better than the outside. maintained at high pressure.

As such, when the evacuee evacuates to the inside of the shelter box 100, the control unit 131 immediately supplies fresh air to the inside of the shelter box to prevent damage to the evacuee's respiratory system.

In addition, in this embodiment, an ammonia sensor 135 installed inside the ship to detect ammonia leak gas, and an ammonia alarm unit connected to the ammonia sensor 135 to notify the ammonia leak detection and provide communication to the control unit 131 ( 140), and a personal terminal 141 connected to the ammonia alarm unit 140 through the control unit 131 may be further included.

The control unit 131 acquires leak information including the contaminated area and concentration of ammonia through the ammonia alarm unit 140 connected to the ammonia sensor 135, and notifies the worker of the ammonia leak alarm through the personal terminals 141 of the workers. will do

The personal terminal 141 is equipped with an alarm app that provides leak information of ammonia as an alarm, and the operator can evacuate to the nearest shelter box 100 after identifying the leak area and degree through the alarm app.

The present embodiment may further include an exhaust hood 150 installed adjacent to the ammonia facility or system.

Ammonia is generally lighter than air and diffuses by its own buoyancy, but ammonia gas generated from liquid forms a mixed gas with air, which is heavier than air and can stay close to the ground surface.

The exhaust hood 150 contributes to rapidly removing pollutants by inhaling ammonia gas that has settled in the lower air layer and exhausting it to the outside.

The exhaust hood 150 may be connected to the control unit 131 and automatically operate. That is, when the ammonia sensor 135 detects leakage of ammonia, the control unit 131 collects it and automatically operates the exhaust hood 150 in the place where the ammonia leaks to reduce or remove the contamination level.

In the above, the shelter box 100, the ammonia sensor 135, and the ammonia alarm unit 140 are installed in a plurality of places, such as pipes supplying ammonia gas, facilities used, and tanks where ammonia is stored, where ammonia leakage may occur. It can be.

As described above, the embodiments of the present invention have been described, but based on this, those skilled in the art can add or change components within the scope that does not deviate from the essential technical idea of the present invention described in the claims. The present invention may be variously modified and changed by deletion, addition, or the like, which is also included within the scope of the present invention.

100: shelter box 101: sealed door
103: air outlet 105: water outlet
110: washing water injection pipe 111: washing water valve
120: breathing air injection pipe 121: air compressor
122: air reservoir 125: air pipe
126: first air valve 127: second air valve
130: evacuation detection sensor 131: control unit
135: ammonia sensor 140: ammonia alarm unit
141: personal terminal 150: exhaust hood

Claims (11)

As installed adjacent to the ammonia plant or equipment system in the ship,
A shelter box (100) providing an evacuation space for ammonia gas in the ship and having an airtight door (101);
a washing water injection pipe 110 installed inside the shelter box 100 and spraying water for air washing; and
It is installed inside the shelter box 100 and includes a breathing air injection pipe 120 for spraying and supplying fresh air,
An air outlet 103 and a water outlet 105 are further provided in the shelter box 100,
An air compressor 121 for pressurizing and supplying air to the breathing air injection pipe 120;
an air reservoir 122 connected to the air compressor 121; and
Ammonia leakage escape structure of a ship, further comprising an air pipe 125 connected to the breathing air injection pipe 120 via the air compressor 121 and the air reservoir 122. delete delete According to claim 1,
a first air valve 126 for regulating air flow from the air compressor 121 to the air reservoir 122; and
Ammonia leakage escape structure of a ship, further comprising a second air valve 127 for controlling air flow from the air reservoir 122 side to the breathing air injection pipe 120 side. According to claim 4,
An evacuation detection sensor 130 installed in the shelter box 100 and detecting an evacuee; and
Ammonia leakage evacuation structure of a ship, including a control unit 131 connected to the evacuation detection sensor 130 and automatically controlling the opening and closing of the second air valve 127. According to claim 5,
When an evacuee is detected inside the shelter box 100, the controller 131 opens the second air valve 127 to supply fresh air to the shelter box 100, and the shelter box 100 An ammonia leakage evacuation structure of a ship that maintains the inside at a higher air pressure than the outside. According to claim 5,
An ammonia sensor 135 installed inside the ship to detect leakage of the ammonia gas; and
An ammonia leakage escape structure of a ship, further comprising an ammonia alarm unit 140 connected to the ammonia sensor 135 to notify detection of leakage of the ammonia gas and providing communication to the control unit 131. According to claim 7,
Ammonia leakage evacuation structure of a ship, further comprising a personal terminal 141 connected to the ammonia alarm unit 140 through the control unit 131. According to claim 7,
Ammonia leakage escape structure of a ship, further comprising an exhaust hood 150 installed adjacent to the ammonia facility or system. According to claim 9,
When leakage of the ammonia gas is detected by the ammonia sensor 135, the exhaust hood 150 is automatically operated through the control unit 131, the ship's ammonia leakage escape structure. A ship equipped with an ammonia leak escape structure according to any one of claims 1, 4, 5, 6, 7, 8, 9, and 10.

Images