KR-102962979-B1 - EMERGENCY VENTILATION APPARATUS BASED ON SKID FOR AMMONIA PROPULSION SHIP

KR102962979B1KR 102962979 B1KR102962979 B1KR 102962979B1KR-102962979-B1

Abstract

The present invention relates to a compartment-based emergency ventilation system for an ammonia-propelled vessel, and more specifically, to a compartment-based emergency ventilation system for an ammonia-propelled vessel that can rapidly discharge gas in the event of an ammonia gas leak, and is configured to be divided into compartments, thereby enabling easy intake of gas only from the skid where the ammonia gas leaked. To this end, the present invention provides an emergency ventilation system within a skid room in which a plurality of skids, each equipped with equipment of an ammonia-propelled vessel, are partitioned and arranged, an air inlet is provided on one side of the upper portion, and an external exhaust fan is provided on the other side of the upper portion, the system comprising: a plurality of suction hoods provided on each skid, each equipped with a gas detector that detects whether there is a leak of ammonia gas; an emergency venting unit connected to the upper portion of each suction hood by a hose and comprising an exhaust fan that sucks in the leaked ammonia gas, a water tank connected to the exhaust fan, and an outlet through which the gas passing through the water tank is discharged to the outside; and a plurality of emergency valves provided on each hose, which are turned on/off depending on whether a leak of ammonia gas is detected by the gas detector. and a control unit that, when an ammonia gas leak is detected by the gas detection unit, turns on only the emergency valve connected to the suction hood where the ammonia gas leak was detected and turns off the remaining emergency valves; and is characterized in that, when an ammonia gas leak occurs, the ammonia gas sucked in through the emergency venting unit is neutralized in the water tank.

Inventors

조성갑
이윤혁
서인덕
김정현

Assignees

주식회사 동화엔텍

Dates

Publication Date: 20260511
Application Date: 20240919

Claims (4)

The invention relates to an emergency ventilation system within a skid room in which a plurality of skids, each equipped with equipment for an ammonia-propelled vessel, are partitioned and arranged, an air inlet is provided on one side of the upper portion, and an external exhaust fan is provided on the other side of the upper portion. A plurality of suction hoods, each equipped with a gas detector that detects whether ammonia gas is leaking, provided on each of the above-mentioned skids; An emergency venting unit comprising an exhaust fan connected to each upper part of the suction hood via a hose and sucking in the leaked ammonia gas, a water tank connected to the exhaust fan, and an outlet through which the gas passing through the water tank is discharged to the outside; A plurality of emergency valves provided in each of the above hoses, which are turned on/off depending on whether an ammonia gas leak is detected by the gas detection unit; and A control unit that, upon detection of an ammonia gas leak by the gas detection unit, turns on only the emergency valve connected to the suction hood where the ammonia gas leak was detected, and turns off the remaining emergency valves; A compartment-based emergency ventilation system for an ammonia-propelled vessel, characterized in that, in the event of an ammonia gas leak, the ammonia gas drawn in through the emergency venting section is neutralized in the water tank.
In Article 1, A general venting part connected to the above hose and connected to the above external exhaust fan; It further includes an external valve that is provided in the hose of the general venting section above and turns on/off depending on whether ammonia gas leakage is detected by the gas detection section; The above control unit is, Normally, the above external valve is turned on to allow ventilation within the above skid room, and A compartment-based emergency ventilation system for an ammonia-propelled vessel, characterized by turning off the external valve to drive the emergency venting unit when an ammonia gas leak is detected by at least one of the gas detection units.
In Article 1, A general venting section connected to the above suction hood and external exhaust fan; An external valve provided in the hose of the above general venting section, which turns on/off depending on whether ammonia gas leakage is detected by the gas detection section; An external hose connecting the above emergency valve and the above external valve; A plurality of drip trays provided at the bottom of each of the above-mentioned skids, wherein the liquid ammonia is collected upon leakage of the liquid ammonia and a level sensor is provided to detect the level of the collected liquid ammonia; and It further includes an ejector that uses circulating water, which is connected through the drip tray and drip valve and connected to the water tank and pump of the emergency venting section. The above control unit is, When a certain level of liquid ammonia or higher is detected by at least one of the level sensors, the drip valve is turned on and the ejector is driven to draw in the liquid ammonia collected in the drip tray. When an ammonia gas leak is detected by the gas detection unit, only the emergency valve connected to the suction hood where the ammonia gas leak was detected is turned on to operate the emergency venting unit, while simultaneously turning off the remaining emergency valves. A compartment-based emergency ventilation system for an ammonia-propelled vessel, characterized by turning on the above-mentioned external valve to allow ventilation.
In any one of paragraphs 1 to 3, It further includes an air intake and a portable fan provided in a hose connected to the suction hood, and A compartment-based emergency ventilation system for an ammonia-propelled vessel, characterized by installing the portable fan inside the suction hood to discharge ammonia gas remaining in the hose or equipment during inspection or maintenance work on the above system.

Description

Emergency Ventilation Apparatus Based on Skid for Ammonia Propelled Ship The present invention relates to a compartment-based emergency ventilation system for an ammonia-propelled vessel, and more specifically, to a compartment-based emergency ventilation system for an ammonia-propelled vessel that can rapidly discharge gas in the event of an ammonia gas leak, and is configured to be divided into compartments, thereby enabling easy intake of gas only from the skid where the ammonia gas leaked. Generally, various engines installed on ships generate power by burning fuel, and the exhaust gases produced during the combustion process contain nitrogen oxides, sulfur oxides, carbon dioxide, etc. As air pollution increases, regulations on various hazardous substances contained in exhaust gases are becoming stricter, and not only nitrogen oxides and sulfur oxides but also carbon dioxide are subject to emission regulations by the International Maritime Organization (IMO), a UN agency. In fact, the International Maritime Organization is pursuing a plan to reduce carbon dioxide emissions by 40% compared to 2008 levels by 2030 and by 70% compared to 2008 levels by 2050. Accordingly, there is a demand for the development of eco-friendly ships that generate power using low-carbon or decarbonized fuels, and ammonia, which emits no carbon dioxide during combustion, is emerging as one of the next-generation eco-friendly fuels. Meanwhile, in existing vessels using ammonia as fuel, if the engine trips or malfunctions, residual fuel remaining in the ammonia supply piping and on the engine side is purged, the purged fuel is neutralized in an ammonia neutralization tank, and the upper residual gas is released into the atmosphere within the permissible range for atmospheric release. However, ammonia is a toxic substance that poses a safety risk because it does not disperse quickly once released into the atmosphere; therefore, there is a need for a device capable of safely and efficiently releasing ammonia into the atmosphere in the event of a leak within the key equipment areas of the fuel supply system. FIG. 1 is a diagram showing a compartment-based emergency ventilation system for an ammonia-propelled ship according to a first embodiment of the present invention. FIG. 2 is a diagram showing a compartment-based emergency ventilation system for an ammonia-propelled ship according to a second embodiment of the present invention. FIG. 3 is a diagram showing a compartment-based emergency ventilation system for an ammonia-propelled ship according to a third embodiment of the present invention. Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the attached drawings. Prior to the description, the advantages and features of the present invention and the methods for achieving them will become clear by referring to the embodiments described below in detail together with the attached drawings. Furthermore, it should be noted that the terms used in this specification are for describing the embodiments and are not intended to limit the present invention; that singular forms of such terms include plural forms unless specifically stated otherwise in the text, and that words indicating direction in the description are intended to aid in understanding the description and may change depending on the context. In the present invention, when describing the on/off state of the valve, it is explained that when the valve is turned on, the valve is in an open state, and when the valve is turned off, the valve is in a closed state. First embodiment A compartment-based emergency ventilation system for an ammonia-propelled ship according to the first embodiment of the present invention will be described in detail below with reference to the attached drawings. FIG. 1 is a drawing showing a compartment-based emergency ventilation system for an ammonia-propelled ship according to the first embodiment of the present invention. Referring to FIG. 1, the compartment-based emergency ventilation system (100) for an ammonia-propelled ship according to the present embodiment is an emergency ventilation system within a skid room (500), and when ammonia gas leaks within the skid room (500), it sucks in and discharges it. The skid room (500) is a place where equipment for an ammonia-propelled vessel is provided, and equipment such as pumps and compressors may be provided, and as shown in FIG. 1, each piece of equipment is partitioned and arranged on a skid (501). That is, a plurality of skids (501a, 501b, 501c) are provided within the skid room (500), and equipment is provided on each skid (501). As indicated by arrow A, this skid room (500) is provided with an air inlet (510) on one side of the upper portion for internal ventilation and an external exhaust fan (520) on the other side of the upper portion. The present invention is an emergency ventilation system within such a skid room (500). The compartment-based