Process for producing purified natural gas from natural gas comprising water and carbon dioxide
AssigneeShell Oil Company
InventorHerman Pieter Charles Eduard Kuipers
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Abstract
The invention provides a process for producing purified natural gas from feed natural gas comprising water and carbon dioxide, the process comprising the steps of: (a) removing water from the feed natural gas to obtain natural gas depleted in water and comprising carbon dioxide; (b) contacting the natural gas obtained in step (a) with solid sorbent comprising a metal organic framework to remove at least part of the carbon dioxide, thereby obtaining the purified natural gas.
Claims17
A process for producing purified natural gas from feed natural gas comprising from 50 ppmv to 2 v/v % water, from 1 ppmv to 20 vol % hydrogen sulphide, and from 1 ppmv to 40 vol % carbon dioxide, wherein the process comprises the steps of:
- (a) removing from 80 to 100% of said water from the feed natural gas to obtain natural gas depleted in water to a water content of less than 50 ppmv and comprising carbon dioxide;
- (b) contacting the water-depleted natural gas obtained in step (a) with solid sorbent comprising a metal organic framework to remove at least part of the carbon dioxide, thereby obtaining the purified natural gas.
A process for producing purified natural gas from a feed natural gas comprising water and carbon dioxide, the process comprising the steps of:
- (a) removing from 80 to 100% of the water from the feed natural gas by contacting the feed natural gas with a zeolite molecular sieve having an average opening (pore diameter) of 5 Å or less to obtain natural gas depleted in water to a water content less than 50 ppmv and comprising carbon dioxide;
- (b) contacting the water-depleted natural gas obtained in step (a) with a solid sorbent comprising a metal organic framework to remove at least part of the carbon dioxide, thereby obtaining the purified natural gas, wherein the metal organic framework comprises a Zn2+ metal ion and a bidentate organic compound.
Dependencies are inferred from the claim text.