Ft gtl apparatus and method for producing single synthetic crude oil

a synthetic crude oil and gastoliquid technology, applied in the field of ft gtl, can solve the problems of increased facilities and fuel supply, difficult use to secure flowability, etc., and achieve the effects of reducing transportation costs, saving deck space, and reducing production costs

Inactive Publication Date: 2016-12-22
DAEWOO SHIPBUILDING & MARINE ENG CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0047]According to the present invention, it is possible to provide an FT GTL apparatus and method for producing a single synthetic crude oil which can save deck space in an FPSO while reducing production costs due to use of simple product upgrading equipment, and allows the FPSO to only require one tank to store products and eliminates a need for additional heat supply needed to store the products and transfer the products to a pump, thereby reducing transportation costs.
[0048]In addition, according to the present invention, it is possible to provide an FT GTL apparatus and method for producing a single synthetic crude oil which subjects some of FT wax to a low level of general hydrocracking or mild hydroisomerization after mixing FT naphtha with FT heavy oil so as to allow a synthetic crude oil to be transported without being heated, thereby reducing complexity, space, and cost as compared with the case of using a refinery apparatus provided with a high pressure hydrocracking reaction unit while reducing hydrogen consumption as compared with the case of using such a refinery apparatus.
[0049]Further, according to the present invention, it is possible to secure flowability of a synthetic crude oil produced in a GTL FPSO, thereby improving economic feasibility of a series of processes including production, storage, offloading, transportation, and separation of the synthetic crude oil, such that marketable technology can be accumulated in the related art.

Problems solved by technology

In this context, although development of a GTL FPSO aimed at allowing technology on land to be realized at sea is proceeding, there are many problems to solve before commercialization.
One of such problems involved with the GTL FPSO is an issue of securing flowability for storage and transportation of GTL synthetic crude oil.
However, this method requires additional facilities and fuel supply to continuously maintain the temperature during a series of processes including production / storage / offloading / separation.
However, this method is aimed at washing tar / sludge without causing physical deformation of a pipe and a storage tank, and is thus difficult to use to secure flowability so as to facilitate transportation and use of a synthetic crude oil produced in the GTL FPSO.

Method used

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  • Ft gtl apparatus and method for producing single synthetic crude oil
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  • Ft gtl apparatus and method for producing single synthetic crude oil

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first embodiment

[0064]According to the invention, after FT naphtha is mixed with FT heavy oil, some of FT wax is subjected to a low level of general hydrocracking or mild hydroisomerization such that the synthetic crude oil can be transported without heat treatment. Such a concept includes transforming mixed synthetic crude oil such that the synthetic crude oil can be stored and transported without heat treatment, although the concept includes using a catalyst and operating system not intended to produce a final FT product. In addition, this concept also includes using different catalysts to produce different products without diluting (or mixing) FT naphtha and FT heavy oil with treated FT wax.

[0065]The above concept includes subjecting FT wax to hydrocracking or mild hydroisomerization in order to only increase the pour point and freezing point of the synthetic crude oil without trying to modify other properties. Thus, it is possible to reduce costs required for processing an FPSO on-board FT prod...

second embodiment

[0093]According to the invention, the FT synthesis unit 600 is provided to produce synthetic oil from syngas prepared from natural gas. Referring to FIG. 5, a GTL main process is performed by the natural gas saturation and pre-reforming unit 300, the reforming unit 400, the syngas conditioning unit 500, the FT synthesis unit 600, and the product treatment unit 800, which are sequentially connected to one another. The FT synthesis unit 600 serves to convert the syngas into the synthetic oil, and the product treatment unit 800 serves to upgrade the synthetic oil to produce a synthetic crude oil. A surplus syngas generated in the FT synthesis unit 600 is fractionated in the tail gas separation unit 700 to be partially recycled to the pre-reforming unit 20. The synthetic crude oil produced in the product treatment unit 800 is stored in a tank.

[0094]Here, since the synthetic crude oil produced in the GTL FPSO exhibits high viscosity due to containing a large amount of wax, it is necessar...

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Abstract

Disclosed are a Fischer-Tropsch (FT) gas-to-liquid (GTL) apparatus for producing unitary synthetic crude oil and an FT GTL method for producing unitary synthetic crude oil. The FT GTL apparatus for producing unitary synthetic crude oil of the present invention is an FT GTL apparatus for producing unitary synthetic crude oil from floating production, storage, and off-loading (FPSO), and characterized by comprising: a gas injection stabilization unit for performing stabilization on the produced natural gas to generate a natural gas condensate; and a modification unit for modifying the natural gas, which has been treated in the gas injection stabilization unit, to produce a synthetic crude oil product.

Description

TECHNICAL FIELD[0001]The present invention relates to an FT (Fischer-Tropsch) GTL (gas-to-liquid) apparatus and method for producing a single synthetic crude oil (syncrude) and, more particularly, to an FT GTL apparatus and method which can fluidize FT wax, which is an intermediate synthetic crude oil product (FT naphtha, FT heavy oil, FT wax) produced by chemical processes in a GTL floating production, storage, and off-loading (FPSO) and is in a solid state causing difficulty in transportation, by subjecting some of the FT wax to a low level of general hydrocracking or mild hydroisomerization and mixing FT naphtha and FT heavy oil with the FT wax such that the resulting product can be stored and transported in a solid state.BACKGROUND ART[0002]Recently, as petroleum resources are on the brink of being exhausted, there is demand for alternative resources capable of producing transportation oils, fuel oils, and petrochemicals. Representative examples of hydrocarbon materials that can...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): C10G5/00C10G67/00C10G49/00C10G2/00C10G47/00
CPCC10G5/00C10G2/31C10G47/00C10G2300/4062C10G67/00C10G2300/1025C10G2300/4037C10G49/00C10G45/58C10G2/32
Inventor KWON, HYUKMOON, YOUNG SIKKIM, WON SEOK
Owner DAEWOO SHIPBUILDING & MARINE ENG CO LTD
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