Unlock instant, AI-driven research and patent intelligence for your innovation.

Method and installation for producing treated natural gas from a C3+ hydrocarbon-rich cut and ethane-rich stream

A natural gas, ethane-rich technology, used in lighting and heating equipment, refrigeration and liquefaction, cold processing separation, etc., can solve the problems of high cost, complex implementation and high maintenance cost

Active Publication Date: 2008-01-09
TECH FRANCE SA
View PDF0 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the method is complex and costly to implement, especially because of the high maintenance costs of the equipment using it

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method and installation for producing treated natural gas from a C3+ hydrocarbon-rich cut and ethane-rich stream

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0054] [54] Plant 11 as shown is used to utilize desulfurized, dry and at least partially decarbonated raw natural gas source 13 for the simultaneous production of: Refined natural gas 15, C 3 + A hydrocarbon fraction 17 and an ethane-enriched stream 19 with adjustable flow.

[0055] [55] The phrase "at least partially decarbonated" means that when the refined natural gas 15 is to be liquefied, the carbon dioxide content in the raw natural gas 13 is advantageously less than or equal to 50 ppm. This content is advantageously below 3% when refined natural gas 15 is sent directly to the natural gas pipeline network.

[0056] [56] The device 11 includes a C 2 + Hydrocarbon recovery unit 21 and these C 2 + A fractionation unit 23 for hydrocarbons.

[0057] [57] In the following, a liquid flow and a conduit conveying said flow are designated with the same reference numerals, said pressures are absolute pressures, and said percentages are mole percentages.

[0058] [58] C 2 ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention concerns a method comprising cooling the initial natural gas (13) and introducing same into a C2+ hydrocarbon recovery column (35). It comprises recovering the overhead stream (131) of the column (35) to form the treated natural gas (15), and recovering the bottoms stream (171) of the column (35) to introduce same at a supply level (P1) of the fractionating column (61) provided with an overhead condenser (63). The column (61) produces in the bottoms said C3+ hydrocarbon cut (17). The method comprises recovering the ethane-rich stream (19) from the intermediate level (P2) of the column (61), located above said supply level (P1) and the production of a secondary reflux stream (191) from said overhead condenser (63) introduced in reflux into the recovery column (35).

Description

technical field [0001] [01] The present invention relates to the utilization of methane, ethane and C 3 + Hydrocarbon raw natural gas simultaneously produces refined natural gas, C-rich 3 + A method of producing a hydrocarbon fraction and producing an ethane-enriched stream under at least some production conditions. [0002] [02] The method comprises the following steps: [0003] [03] - cooling and partially condensing said raw natural gas; [0004] - separating the cooled natural gas into a liquid phase stream and a gas phase stream; [0005] [05] - expand the liquid stream and make it at a C 2 + input to a first intermediate stage in the hydrocarbon recovery column; [0006] - separating said gas phase stream into a feed stream and a reflux stream, wherein said feed stream is supplied to said recovery column; [0007] [07] -expanding said feed stream in a turbine and then feeding it to a second intermediate stage in said recovery column; [0008] -cooling and at le...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): F25J3/00
CPCF25J3/0209F25J2260/20F25J2215/62F25J3/0242F25J3/0238F25J2200/04F25J2200/90F25J2200/78F25J2205/04F25J2200/74F25J2200/72F25J2240/02F25J2290/12F25J2280/02F25J3/0233F25J2260/02
Inventor H·帕拉多斯基
Owner TECH FRANCE SA