KR20110016250A - Liquid co2 carrier using pusher vessel and tank barge concept - Google Patents

Abstract

PURPOSE: A liquid carbon dioxide carrier with a pusher vessel and a tank barge is provided to refine, dehydrate, compress, and liquefy carbon dioxides collected from generating stations or steel mills and to transfer the carbon dioxides a sea storage place. CONSTITUTION: A liquid carbon dioxide carrier with a pusher vessel and a tank barge comprises a tank barge and a carrier. The tank barge is made of a reservoir storing liquefied carbon dioxides of normal temperature and high pressure or low temperature and low pressure. The carrier can be coupled with and separated from the tank barge. The carrier is formed into a pusher vessel type to transfer the tank barge with being coupled with the tank barge.

Description

Liquid CO2 Carrier Using Pusher Vessel and Tank Barge Concept}

The present invention relates to a method for transporting carbon dioxide among technologies for performing carbon capture, transport, and storage, and more particularly, by transporting carbon dioxide, which is a representative greenhouse gas causing climate change, on a large scale through the ocean. A transport ship for underground storage.

The storage technology that sequesters carbon dioxide in the seabed's geological structure (hereinafter referred to as 'CO₂ marine underground storage technology') is a pipeline that collects carbon dioxide from large-scale sources such as power plants and steel mills in order to respond to climate change and the greenhouse gas reduction requirements under the Kyoto Protocol. It is a technology for long-term storage and management over hundreds to thousands of years on large scales in marine sedimentary layers (oil and gas fields, deep saltwater, coal beds, etc.).

In general, carbon dioxide collected in steel mills and power plants exists in the vapor phase of ambient temperature and ambient pressure, and a large volume of transport ships are required to transport them to offshore reservoirs in quantities of several hundred thousand tons per year. need.

Thus, the prior art (Statoil's patent) uses carbon dioxide as a liquid whose temperature is above the triple point (-56.5 ° C) and below the critical point (31.1 ° C), and the pressure is above the triple point (5.18 bar) and below the critical point (73.9 bar). It was made to transport carbon dioxide. On this continuous line, the prior art is a large (22,800 m3) tanker-type ship (Japan) holding liquefied carbon dioxide at -55 ° C and 5 bar, and a small (1,250m3) tanker-type ship (Norway) holding it at -40 ° C and 18 bar. ) Is proposed. However, these conventional technologies propose only carbon dioxide-only transport ships in which a storage space and a propellant are integrated for mass transport.

However, when using such a tanker-type liquid carbon dioxide-only transport ship, a large number of large storage tanks (pressure vessels) for temporarily storing liquid carbon dioxide before loading and unloading are required at the port of the land. In addition, in order to increase the number of operation of the tanker type liquid carbon dioxide transporter and increase the operational efficiency, a large temporary storage facility should be installed near the ocean reservoir to inject liquid carbon dioxide into the ocean sedimentary reservoir. That is, when using the conventional technology, a large number of large temporary storage facilities are required both on land and at sea in order to increase the operational efficiency of the transport.

The present invention has been proposed to solve the above problems, purification, dehydration, compression and liquefaction of carbon dioxide collected in large-scale carbon dioxide sources, such as steel mills, power plants, etc. to make liquefied carbon dioxide at room temperature high pressure or low temperature low pressure The aim is to provide a new concept of liquefied carbon dioxide transporter that transports underground or subsea reservoirs. According to the present invention, unlike the conventional technology in which the transport ship hull and the storage tank are integrally designed and manufactured, a storage container capable of storing liquefied carbon dioxide at room temperature high pressure or low temperature low pressure is manufactured as a tank barge, and this is The Pusher Vessel is used to transport the land from the port to the ocean reservoir.

Other objects and advantages of the present invention will be described below, which are not limited to the matters set forth in the claims and the disclosure of the embodiments thereof, but also to the broader ranges by means and combinations within the range readily recited therefrom. Add that it will be included.

In order to achieve the above object, the present invention, Tank Barge (Tank Barge) consisting of a storage container capable of storing liquefied carbon dioxide at room temperature high pressure or low temperature; The present invention provides a liquefied carbon dioxide transporter that combines the concept of a pusher vessel and a tank pants, which include a pusher vessel type transporter capable of combining and detaching tank tanks and transporting the tank pants while being coupled to the tank pants.

According to the present invention the following effects occur. First, the transporter does not have to stay in the port or reservoir during the carbon dioxide loading and unloading period. In other words, it can dramatically reduce the mooring time of the transport ship to maximize the transport efficiency. Second, separate temporary storage facilities are not required for onshore ports and offshore storage areas. Tank Barge itself can be used as a temporary storage facility. As a result, the cost of large-scale temporary storage facilities can be reduced. Third, when the source and storage of carbon dioxide are located at a short distance (for example, Korea, China, Japan, etc.), carbon dioxide is produced by using small and medium capacity tank pants and existing pusher vessels without producing a large capacity carbon dioxide transport ship. Can transport. Therefore, the present invention is more suitable for short distance transportation conditions in which the CO2 dedicated ships are relatively inferior to the pipelines, and it is very difficult to install the pipelines. It is absolutely advantageous for transporting through the Ulleung Basin, which is a deep sea bed, to the reservoir. Fourth, the transport ship and the tank pants are independently separated and manufactured and operated, which is advantageous to manufacture and maintenance.

Other effects of the present invention, as well as those described in the above-described embodiments and claims of the present invention, as well as potential effects that may occur within the range that can be easily estimated therefrom and potential advantages that contribute to industrial development It will be added that it will be covered by a wider scope.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In describing the present invention, when it is determined that the detailed description of the related well-known configuration or function may obscure the gist of the present invention, the detailed description thereof will be omitted. In addition, the following will describe a preferred embodiment of the present invention, but the technical idea of the present invention is not limited thereto and may be variously modified and modified by those skilled in the art.

1 and 2 are the overall view of the liquefied carbon dioxide transport ship combining the pusher vessel and the tank pants concept according to the present invention, Figure 1 is a state in which the transport ship and the tank pants are separated, Figure 2 is a state in which the transport ship and tank pants are combined Is showing.

The liquefied carbon dioxide transport ship combining the pusher vessel and the concept of the tank pants according to the present invention includes a tank barge (Tank Barge) consisting of a storage container capable of storing liquefied carbon dioxide at room temperature, high pressure or low temperature; Combination and separation of the tank pants is possible and consists of a pusher vessel (Pusher Vessel) type transport ship that can transport the tank pants in the state coupled to the tank pants.

The storage vessel installed in the tank pants is a large-capacity low-pressure (or high-pressure) pressure vessel capable of storing liquefied carbon dioxide at room temperature high pressure or low temperature low pressure that purifies, dehydrates, compresses, and liquefies the carbon dioxide collected in a large carbon dioxide source.

A pusher vessel, which is a transporter, is a vessel capable of combining and detaching the tank pants and transporting the tank pants in a state of being coupled to the tank pants, and transports a large-capacity storage container for a short distance (for example, transportation between Korea, China, and Japan). can do.

According to the present invention, a pusher vessel is combined with a tank pants storing liquefied carbon dioxide at room temperature high pressure or low temperature in a land port and transported to an offshore carbon dioxide reservoir, wherein the pusher vessel is separated from the tank pants at the offshore carbon dioxide reservoir. Step, storing the carbon dioxide extracted from the tank pants in the offshore carbon dioxide reservoir, the pusher vessel is combined with the empty tank pants to return to the port of the land while efficiently transporting the liquefied carbon dioxide.

Of course, many large temporary storage facilities are not needed in onshore ports or offshore CO2 storage. Tank pants made of storage containers take the place of large temporary storage facilities. Hereinafter, the embodiment in which the present invention is operated will be described in detail step by step.

Pusher Vessel Combination and Separation with Tank Pants in a Port of Land

In land ports, it is desirable to store liquefied carbon dioxide at room temperature high pressure or low temperature low pressure in a storage container (tank) before the pusher vessel is combined with the tank pants. This eliminates the need for a transport vessel (pusher vessel) to stay in the port during carbon dioxide loading and injection. In other words, it is possible to maximize the transportation efficiency by drastically reducing the mooring time of the ship.

Tank pants are moored in onshore ports with liquefied carbon dioxide stored at room temperature, high pressure or low temperature. The pusher vessel will then come into contact with the tank pants. According to the embodiment of Figure 1 pusher vessel is connected in the form of being fitted to the stern portion of the tank pants, and acts as a power source to move the tank pants in the state coupled with the tank pants.

On the other hand, the process of separating the pusher vessel from the tank pants in the port of the land differs only in the order of the above combined process.

The pusher vessel is combined with and separated from the tank pants in the offshore CO2 reservoir

The process of combining and separating pusher vessels from tank pants in offshore CO2 reservoirs is carried out in the same way as onshore ports. However, in offshore CO2 reservoirs (offshore platforms), unlike onshore ports, it is impossible to secure enough space above the surface to moor tank pants. Therefore, the ocean itself is used as a mooring space. do.

Storing carbon dioxide extracted from tank pants in a carbon dioxide reservoir at sea

Figure 3 shows an embodiment of the present invention, extracting carbon dioxide from the tank pants and storing it in the offshore carbon dioxide storage.

In this step, the tank pants itself, which is a carbon dioxide storage container, are used as a floating temporary storage facility. An injection facility, such as a pipe or a pump, for injecting carbon dioxide from the tank pants into the marine ground (or the bottom) is installed on the offshore platform, and the carbon dioxide is injected and semi-permanently stored using the same.

The above description is merely illustrative of the technical idea of the present invention, and various modifications, changes, and substitutions may be made by those skilled in the art without departing from the essential characteristics of the present invention. will be. Accordingly, the embodiments disclosed in the present invention and the accompanying drawings are not intended to limit the technical spirit of the present invention but to describe the present invention, and the scope of the technical idea of the present invention is not limited by the embodiments and the accompanying drawings. . The protection scope of the present invention should be interpreted by the following claims, and all technical ideas within the equivalent scope should be interpreted as being included in the scope of the present invention.

1 is an overall view of a liquefied carbon dioxide transport ship combining a pusher vessel and a tank pants concept according to the present invention, showing a state in which the transport ship and the tank pants are separated.

2 is an overall view of a liquefied carbon dioxide transport ship combining a pusher vessel and a tank pants concept according to the present invention, showing a state in which the transport ship and the tank pants are combined.

Figure 3 shows an embodiment of the present invention, extracting carbon dioxide from the tank pants and storing it in the offshore carbon dioxide storage.

Claims (2)

Tank Barge consisting of a storage container capable of storing liquefied carbon dioxide at room temperature high pressure or low temperature; A liquefied carbon dioxide transporter that combines the concept of a pusher vessel and a tank pants, including a pusher vessel type transporter capable of combining and detaching tank tanks and transporting the tank pants while being coupled to the tank pants. Tank Barge consisting of a storage container for storing the high temperature or low temperature low-pressure liquefied carbon dioxide (Pank Barge) characterized in that for transporting by connecting to the pusher vessel (Pusher Vessel) type of transport vessel that can be combined and separated with respect to the tank pants A method of transporting liquefied carbon dioxide that combines the concept of a pusher vessel and tank pants.

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