KR20100064541A - Improved steam carbon dioxide reforming type gtl fpso plant and method for extracting methane gas from methane hydrate layer by the same - Google Patents

Abstract

The present invention relates to a floating plant capable of producing, storing and unloading a synthetic oil of steam and carbon dioxide reforming reaction, and comprising steam and carbon dioxide reforming reaction oil configured to extract methane hydrate in the form of methane gas from the methane hydrate layer. It is an object of the present invention to provide a floating plant capable of producing, storing and unloading and thereby a method of extracting methane gas from the methane hydrate layer.

To this end, the present invention is a floating plant capable of producing, storing and unloading steam and carbon dioxide reforming reaction type, and a methane substituent storage tank for storing a methane substituent substituted with methane hydrate and reacted with methane hydrate. And a methane substituent injection line for injecting the methane substituent from the methane substituent storage tank into the methane hydrate layer, and methane gas generated when methane of the methane hydrate is substituted with the methane substituent in the methane hydrate layer. A methane gas suction line suctioned to the plant, and a steam and carbon dioxide reforming reactor for reforming the methane gas sucked into the plant through the methane gas suction line with steam and carbon dioxide to generate carbon monoxide and hydrogen as syngas; Steam and carbon dioxide reforming, characterized in that The floating plants a synthetic oil production, storage and offloading of eunghyeong possible is provided.

Description

Improved Steam Carbon Dioxide Reforming Type GTL FPSO Plant And Method For Extracting Methane Gas From Methane Hydrate Layer By The Same}

The present invention relates to a floating plant which is capable of producing, storing and unloading steam and carbon dioxide reforming reaction type synthetic oil, which produces, stores and unloads a liquid synthetic oil from a natural gas layer. It relates to a floating plant capable of producing, storing and unloading a synthetic oil of steam and carbon dioxide reforming reaction type configured to extract the gas.

Generally, GTL FPSO Plant, Gas To Liquid Floating Production, Storage and Offloading Plant, which is capable of producing, storing and unloading synthetic oils of Steam and Carbon Carbon Dioxide Reforming Types, It refers to an offshore plant configured to mine natural gas directly, to reform steam and carbon dioxide, to produce synthetic oil in a liquid state, and to store and unload the synthetic oil thus produced.

However, the number of natural gas fields suitable for mining natural gas in a floating plant capable of producing, storing and unloading synthetic oils of steam and carbon dioxide reforming reaction is limited, and the mining period is only about 60 years. Therefore, there is a need to develop a new energy source to replace natural gas as a resource for producing synthetic oil in a floating plant capable of producing, storing and unloading synthetic oil of steam and carbon dioxide reforming reaction type.

Methane Hydrate, meanwhile, is a fuel formed in a solid lattice structure in the form of ice, frozen under the high pressure of methane and water under the seabed or glacier. Although it is buried, it is attracting attention as a next-generation alternative fuel due to its large amount, but it is buried under the deep sea, so there are technical difficulties and economic problems due to the extraction.

In addition, since the emission of carbon dioxide causing global warming is regulated globally, countries or companies are not storing carbon dioxide, and there is a problem in that it is difficult to process the stored carbon dioxide.

In addition, carbon dioxide is incidentally generated during the steam and carbon dioxide reforming reaction to make natural gas into synthetic oil in a floating plant capable of producing, storing and unloading steam and carbon dioxide reforming reaction. Since carbon dioxide causes global warming, The plant had to install a carbon dioxide absorber separately to treat the carbon dioxide.

Accordingly, the present invention is to solve the problems of the prior art, and is capable of producing, storing and unloading synthetic oils of steam and carbon dioxide reforming reaction type configured to extract methane hydrate in the form of methane gas from the methane hydrate layer. Its main purpose is to provide a plant and thereby a method for extracting methane gas from the methane hydrate layer.

In addition, another object of the present invention is to treat carbon dioxide stored and stored in a country or a company.

In addition, the present invention is to treat the carbon dioxide generated during steam and carbon dioxide reforming reaction to make natural gas as a synthetic oil in a floating plant capable of producing, storing and unloading a synthetic oil of steam and carbon dioxide reforming reaction. The purpose.

According to an aspect of the present invention for achieving the above object, a floating plant capable of producing, storing and unloading synthetic oils of the steam and carbon dioxide reforming reaction, methane substituent is substituted with methane of methane hydrate by reacting with methane hydrate A methane substituent storage tank for storing the methane substituent injection line for injecting the methane substituent from the methane substituent storage tank into the methane hydrate layer, and the methane of the methane hydrate in the methane hydrate layer A methane gas suction line for sucking methane gas generated by substitution with the agent and the methane gas sucked into the plant through the methane gas suction line and reforming reaction with steam and carbon dioxide to generate carbon monoxide and hydrogen as syngas; Comprising steam and carbon dioxide reforming reactors A synthetic oil production, Floating Storage and handling plant is capable of steam and carbon dioxide reforming type is provided with.

In the floating plant capable of producing, storing and unloading steam and carbon dioxide reforming-type synthetic oil, the methane substituent is preferably carbon dioxide collected from a country or a company through a carbon dioxide trading system.

A steam generator for supplying steam to the steam and carbon dioxide reforming reactor, the methane substituent injection line of the rear end of the methane substituent storage tank is a mixing tank is installed, from the mixing tank to the steam and carbon dioxide reforming reactor The reforming reaction carbon dioxide supply line for supplying the carbon dioxide of the mixing tank to the steam and carbon dioxide reforming reactor is preferably installed.

From the rear end of the steam and carbon dioxide reforming reactor to the mixing tank, the supply of carbon dioxide for methane replacement supplying carbon dioxide, which is incidentally generated during the reforming reaction of methane gas with carbon dioxide in the steam and carbon dioxide reforming reactor, to the mixing tank as a methane substituent. It is preferable that a line is installed.

In the steam and carbon dioxide reforming reactor, it is preferable to include an F-T synthesis reactor for producing synthetic oil by performing F-T synthesis reaction of carbon monoxide and hydrogen generated by reforming and reacting steam and carbon dioxide with steam.

The front end of the steam and carbon dioxide reforming reactor preferably comprises a separator for separating methane gas and sea water.

It is preferable to include a natural gas suction line for sucking the natural gas from the natural gas layer containing a large amount of carbon dioxide to supply to the steam and carbon dioxide reforming reactor.

In addition, according to another aspect of the present invention for achieving the above object, it is configured to reform the methane gas with steam and carbon dioxide to produce carbon monoxide and hydrogen as a synthesis gas, and then to produce, store and unload the liquid synthetic oil A method of extracting methane gas from a methane hydrate layer by a floating plant capable of producing, storing and unloading synthetic oils of steam and carbon dioxide reforming reactions, wherein the methane substituent is substituted with methane in the methane hydrate by reaction with the methane hydrate from the plant. Is injected into the methane hydrate layer, and the methane hydrate in the methane hydrate layer is sucked into the plant to steam and carbon dioxide reforming reaction of the methane gas generated by substitution of the methane substituent with the methane substituent. Ha A method for extracting methane gas from the methane hydrate layer is provided.

In the method of extracting methane gas from the methane hydrate layer, it is preferable to use carbon dioxide collected from a country or a company through a carbon dioxide trading agent as the methane substituent.

In the methane hydrate layer, the methane in the methane hydrate is generated by substituting the carbon dioxide to generate carbon monoxide and hydrogen as a synthesis gas by steam and carbon dioxide reforming of the methane gas sucked into the plant. It is preferable to use FT synthesis reaction to make synthetic oil and to use carbon dioxide which is incidentally generated during steam and carbon dioxide reforming reaction of the methane gas as a methane substituent.

It is preferable to inject into the methane hydrate layer by mixing the carbon dioxide collected from the country or company through the carbon dioxide trading agent and carbon dioxide generated incidentally during steam and carbon dioxide reforming reaction.

It is preferable to mix carbon dioxide collected from a country or a company through a carbon dioxide trading system and carbon dioxide generated incidentally during steam and carbon dioxide reforming reaction and use it as carbon dioxide for steam and carbon dioxide reforming reaction.

As described above, according to the present invention, since it is possible to extract methane hydrate buried in the deep sea in the form of methane gas in a floating plant capable of producing, storing and unloading a synthetic oil of steam and carbon dioxide reforming reaction, methane hydrate The technical difficulties and economics of the direct collection can be solved.

In addition, according to the present invention, the carbon dioxide is stored in the methane hydrate layer of the seabed by substitution reaction with the methane of the methane hydrate in the methane hydrate layer, it is possible to solve the problem of carbon dioxide treatment according to the carbon dioxide emission regulation.

In addition, according to the present invention, since the carbon dioxide generated during steam and carbon dioxide reforming reaction to make natural gas as a synthetic oil in a floating plant capable of producing, storing and unloading steam and carbon dioxide reforming reaction type synthetic oil, CO2 generated during the steam and carbon dioxide reforming process can be treated without installing a separate carbon dioxide absorber in the plant.

Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings.

1 is a schematic diagram of a floating plant capable of producing, storing and unloading a synthetic oil of steam and carbon dioxide reforming reaction type according to an embodiment of the present invention. In the figure, the components installed in the floating plant (1) capable of producing, storing and unloading a synthetic oil of steam and carbon dioxide reforming reaction type are indicated by blocks.

The floating plant (1) capable of producing, storing and unloading the improved steam and carbon dioxide reforming reaction type synthetic oil of the present invention extracts methane gas from the methane hydrate layer on the seabed, and then reformates the steam and carbon dioxide reforming liquid and then synthesizes the liquid oil. To produce, store and unload.

Floating plant (1) capable of producing, storing and unloading steam and carbon dioxide reforming reaction type according to the present invention is a methane substituent storage tank (10), a methane substituent injection line (L1) and a methane gas suction line ( L2), steam and carbon dioxide reforming reactor 20 and FT synthesis reactor (30).

The methane substituent storage tank 10 is installed in the plant 1, and stores a methane substituent which is reacted with methane hydrate and substituted with methane of methane hydrate.

The methane substituent injection line (L1) is connected to the methane hydrate layer (2) through the bottom of the plant (1) in the methane substituent storage tank (10), the methane hydrate layer ( 2) Inject a methane substituent into the bottle.

The methane gas suction line (L2) is connected to the lower part of the plant (1) in the methane hydrate layer (2), methane gas generated when the methane hydrate methane is replaced with a methane substituent in the methane hydrate layer (2) Is sucked into the plant (1).

In an embodiment of the present invention, the methane substituent is preferably carbon dioxide collected from a country or a company through a carbon dioxide trading system.

The steam and carbon dioxide reforming reactor (20) is synthesized by reforming and reacting methane gas, which is generated by being substituted with carbon dioxide in the methane hydrate layer (2), sucked into the plant (1) through the methane gas suction line (L2). It produces gases, carbon monoxide and hydrogen.

In order to supply hot steam to the steam reforming reactor 20, the steam reformer 20 is connected to the steam reforming reactor 20 through a steam supply line L21 for supplying hot water to steam.

The mixing tank 11 is installed in the methane substituent injection line L1 at the rear end of the methane substituent storage tank 10, and to supply carbon dioxide to the steam and carbon dioxide reforming reactor 20, the mixing tank 11 is provided. To the steam and carbon dioxide reforming reactor 20 is a carbon dioxide supply line (L22) for reforming reaction for supplying carbon dioxide from the mixing tank 11 to the steam and carbon dioxide reforming reactor (20).

In the steam and carbon dioxide reforming reactor 20, a reaction equation representing a process of generating carbon monoxide and hydrogen by steam and carbon dioxide reforming reaction of methane gas is as follows.

3CH ₄ + CO ₂ + 2H ₂ O → 4CO + 8H ₂

Here, steam and carbon dioxide reforming reactions are triggered by nickel (Ni) or nickel (Ni) based catalysts.

The front end of the steam and carbon dioxide reforming reactor 20 includes a separator 23 for separating methane gas and seawater.

Meanwhile, carbon dioxide is incidentally generated during the reforming reaction of methane gas with steam and carbon dioxide in the steam and carbon dioxide reforming reactor 20, and a floating plant capable of producing, storing, and unloading the steam and carbon dioxide reforming reaction type synthetic oil of the present invention. (1) is configured to use carbon dioxide generated during steam and carbon dioxide reforming as a methane substituent.

The reaction equation showing the process in which the carbon dioxide is incidentally generated during the steam and carbon dioxide reforming reaction is as follows.

2CO → CO ₂ + C

The mixing tank 11 is supplied with carbon dioxide generated from the steam and carbon dioxide reforming reactor 20. From the rear end of the steam and carbon dioxide reforming reactor 20 to the mixing tank 11, a methane substitution carbon dioxide supply line (L23) for supplying carbon dioxide generated during the steam and carbon dioxide reforming reaction as a methane substituent is installed.

Therefore, the carbon dioxide supplied from the methane substituent storage tank 10 and the carbon dioxide incidentally generated during the steam and carbon dioxide reforming reaction in the steam and carbon dioxide reforming reactor 20 and supplied from the steam and carbon dioxide reforming reactor 20 are mixed. Mixed in the tank 11 is supplied to the methane substituent injection line (L1).

In addition, the carbon dioxide supplied from the methane substituent storage tank 10 and the carbon dioxide incidentally generated during the steam and carbon dioxide reforming reaction in the steam and carbon dioxide reforming reactor 20 and supplied from the steam and carbon dioxide reforming reactor 20 are mixed tanks. It is mixed in (11) and supplied to the steam and carbon dioxide reforming reactor (20) through the reforming carbon dioxide supply line (L22) for use as carbon dioxide for steam and carbon dioxide reforming reaction.

The F-T synthesis reactor 30 synthesizes the carbon monoxide and hydrogen generated by steam and carbon dioxide reforming reaction in the steam and carbon dioxide reforming reactor 20 by F-T (Fischer-Tropsch) synthesis reaction. The F-T synthesis reaction is a process of making synthetic oil by reacting carbon monoxide and hydrogen under reaction conditions of normal pressure to 30 atm and 200 to 300 ° C. using iron (Fe), cobalt (Co) and ruthenium (Ru) as catalysts.

As described above, carbon dioxide (CO ₂ ) supplied from the methane substituent storage tank 10 and carbon dioxide (CO ₂ ) supplied from the steam and carbon dioxide reforming reactor 20 are mixed in the mixing tank 11, and then methane substituted. first through the injection line (L1) there is introduced into the methane hydrate layer (2), so the injected carbon dioxide (CO _2), methane in the methane hydrate by reaction with methane hydrate (CH ₄₎ and is substituted with methane (CH ₄₎ is extracted The process of this is shown in detail in the following molecular formula.

Methane (CH ₄ ) is a tetrahedral three-dimensional structure with carbon atoms, the central atoms, in the center of the tetrahedron and four hydrogen atoms at each vertex. CH bonds of methane are very strong and methane is chemically stable, so it hardly reacts with acids, alkalis, metals, oxidants, reducing agents, etc., but combustion and substitution reactions occur relatively well.

Methane is a colorless, odorless, flammable gas, but methane hydrate methane, formed in an ice-like solid lattice structure that freezes due to the high pressure of methane and water under the seabed or glacier, is not in the form of gas. In this embodiment, in order to distinguish between methane of methane hydrate formed in an ice-like solid lattice structure and methane generated when methane hydrate is replaced with carbon dioxide, methane hydrate formed in an ice solid lattice structure is used. Methane ", and methane produced when methane of methane hydrate is replaced with carbon dioxide will be referred to as" methane gas ".

Thus, the carbon dioxide injected into the methane hydrate layer (2) through the methane substituent injection line (L1) in the floating plant (1) capable of producing, storing and unloading the steam and carbon dioxide reforming reaction type of the present invention methane hydrate layer By substitution reaction with methane of methane hydrate in (2), carbon dioxide is stored in the methane hydrate layer (2) of the seabed, and the methane of methane hydrate substituted with carbon dioxide is ejected in gaseous form through the methane gas suction line (L2). Is sucked into the plant 1.

Therefore, according to the present invention, it is possible to extract methane hydrate buried in the deep sea in the form of methane gas in a floating plant capable of producing, storing and unloading synthetic oils of steam and carbon dioxide reforming reaction, so as to directly collect methane hydrate. The technical difficulties and economics of the problem can be solved.

In addition, according to the present invention, since carbon dioxide is stored in the methane hydrate layer of the seabed by substitution reaction with methane of the methane hydrate in the methane hydrate layer, it is possible to solve the carbon dioxide treatment problem according to the carbon dioxide emission regulation.

In addition, according to the present invention, in a floating plant capable of producing, storing and unloading steam and carbon dioxide reforming reaction type, carbon dioxide generated during steam and carbon dioxide reforming reaction to make methane gas as a synthetic oil is treated as a methane substituent. Therefore, it is possible to treat the carbon dioxide generated during the steam and carbon dioxide reforming process without installing a separate carbon dioxide absorber in the plant.

In addition, when the natural gas layer 3 is adjacent to the methane hydrate layer 2, the floating plant 1 capable of producing, storing and unloading the synthetic oil of the present invention sucks natural gas from the natural gas layer 3 to steam and carbon dioxide. It may include a natural gas suction line (L3) for supplying to the reforming reactor (20). Methane is the main component of the natural gas directly mined in the natural gas layer (3). However, in order to distinguish methane directly mined from the natural gas layer 3 and methane gas generated by substituting carbon dioxide with methane of methane hydrate and methane hydrate formed in the solid-state lattice structure described above, this embodiment In the methane directly mined from the natural gas layer (3) will be referred to as "natural gas".

The general natural gas field contains about 5% of carbon dioxide in natural gas, but the natural gas field of Southeast Asia contains about 20% of carbon dioxide, and it is possible to produce, store and unload synthetic oil of the steam and carbon dioxide reforming reaction type according to the present invention. Floating plants reformulate methane gas with steam and carbon dioxide, which is advantageous for producing synthetic oil in natural gas fields in Southeast Asia.

While the invention has been described above with reference to specific embodiments, various modifications, changes or modifications may be made in the art within the spirit and scope of the appended claims, and thus, the foregoing description and drawings It should be construed as illustrating the present invention rather than limiting the technical spirit of the present invention.

1 is a schematic diagram of a floating plant capable of producing, storing and unloading a synthetic oil of steam and carbon dioxide reforming reaction type according to an embodiment of the present invention.

Claims (12)

A floating plant capable of producing, storing and unloading synthetic oils of steam and carbon dioxide reforming reaction, A methane substituent storage tank for storing a methane substituent substituted with methane of methane hydrate by reaction with methane hydrate, A methane substituent injection line for injecting the methane substituent into the methane hydrate layer from the methane substituent storage tank; A methane gas suction line for sucking methane gas generated by replacing methane of the methane hydrate with the methane substituent in the methane hydrate layer; The steam and carbon dioxide reforming reaction type comprising a steam and carbon dioxide reforming reactor for reforming the methane gas sucked into the plant through the methane gas intake line with steam and carbon dioxide to produce carbon monoxide and hydrogen as synthesis gas. Floating plant capable of producing, storing and unloading synthetic oils. The method according to claim 1, The methane replacement agent is a floating plant capable of producing, storing and unloading steam and carbon dioxide reforming-type synthetic oil, which is carbon dioxide collected from a country or a company through a carbon dioxide trading agent. The method according to claim 1, A steam generator for supplying steam to the steam and carbon dioxide reforming reactor, A mixing tank is installed in the methane substituent injection line at the rear end of the methane substituent storage tank, From the mixing tank to the steam and carbon dioxide reforming reactor, the production and storage of synthetic oil of steam and carbon dioxide reforming reaction type, characterized in that the reforming reaction carbon dioxide supply line for supplying the carbon dioxide of the mixing tank to the steam and carbon dioxide reforming reactor is installed Floating plant that can be unloaded. The method according to claim 3, From the rear end of the steam and carbon dioxide reforming reactor to the mixing tank, the supply of carbon dioxide for methane replacement supplying carbon dioxide, which is incidentally generated during the reforming reaction of methane gas with carbon dioxide in the steam and carbon dioxide reforming reactor, to the mixing tank as a methane substituent. Floating plant capable of producing, storing and unloading steam and carbon dioxide reforming synthetic oil, characterized in that the line is installed. The method according to claim 1, In the steam and carbon dioxide reforming reactor, methane gas is produced by reforming and reacting steam and carbon dioxide with carbon monoxide and hydrogen. Floating plant for storage and unloading. The method according to claim 1, The front end of the steam and carbon dioxide reforming reactor is a floating plant capable of producing, storing and unloading the synthetic oil of steam and carbon dioxide reforming reaction, characterized in that it comprises a separator for separating methane gas and sea water. The method according to claim 1, Floating type capable of producing, storing and unloading synthetic oil of steam and carbon dioxide reforming reaction, characterized in that it comprises a natural gas suction line for sucking the natural gas from the natural gas layer containing a large amount of carbon dioxide and supplying it to the steam and carbon dioxide reforming reactor plant. A floating plant capable of producing, storing, and unloading steam and carbon dioxide reforming-type synthetic oils, which is configured to reform methane gas with steam and carbon dioxide to produce carbon monoxide and hydrogen, which are syngases, and to produce, store, and unload liquid synthetic oils. As a method of extracting methane gas from the methane hydrate layer by Methane substituent reacted with methane hydrate from the plant to inject methane substituents substituted with methane hydrate into the methane hydrate layer, and methane gas generated by replacing methane hydrate with methane hydrate in the methane hydrate layer. The method of extracting methane gas from the methane hydrate layer, characterized in that the suction to the plant to steam and carbon dioxide reforming reaction in the plant. The method according to claim 8, Method of extracting methane gas from the methane hydrate layer, characterized in that using the carbon dioxide collected from the country or company through the carbon dioxide trading agent as the methane substituent. The method according to claim 9, In the methane hydrate layer, the methane in the methane hydrate is generated by substituting the carbon dioxide and steam and carbon dioxide reforming of the methane gas sucked into the plant to generate carbon monoxide and hydrogen as synthesis gas, and then the carbon monoxide and hydrogen are FT. Synthetic reaction to make synthetic oil, A method of extracting methane gas from the methane hydrate layer, characterized in that the use of carbon dioxide incidentally generated during the steam and carbon dioxide reforming reaction of the methane gas as a methane substituent. The method according to claim 10, Method of extracting methane gas from the methane hydrate layer, characterized in that the carbon dioxide collected from the country or company through the carbon dioxide trading system, and the carbon dioxide generated incidentally during the steam and carbon dioxide reforming reaction is mixed and injected into the methane hydrate layer. The method according to claim 10, Method of extracting methane gas from methane hydrate layer, characterized in that the carbon dioxide collected from the country or company through the carbon dioxide trading system, and the carbon dioxide generated incidentally during steam and carbon dioxide reforming reaction is mixed and used as carbon dioxide for steam and carbon dioxide reforming reaction. .

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