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US 2025/0020626 A1Published application
Systems and methods to assess and reduce salt levels in a mru
AssigneeSaudi Arabian Oil Company
InventorHarry Daniel Oduro
Life of this patent
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Abstract
The disclosure relates to systems and methods to assess and reduce salt levels in a monoethylene glycol (MEG) recovery unit (MRU).
Claims20
A method, comprising:
- measuring a total dissolved solid content in a monoethylene glycol (MEG)-containing stream output from a MEG recovery unit (MRU);
- comparing the measured total dissolved solid content to a threshold value;
- and
- when the measured total dissolved solid content is above the threshold value, flushing the MRU with a first solution comprising sodium bicarbonate and having a pH of from 4.8 to 5.3.
1 more element
A method, comprising:
- flushing a monoethylene glycol recovery unit (MRU) with a first solution comprising sodium bicarbonate and a pH of 4.8 to 5.3 at a temperature of 35° C. to 50° C.
A system, comprising:
- a pretreatment section configured to:
- i) receive a first stream comprising monoethylene glycol (MEG) and impurities comprising salt, water and hydrocarbons;
- ii) reduce an amount of hydrocarbons of the first stream to form a second stream having a reduced hydrocarbon content;
- and iii) output the second stream;
- a filtration section configured to:
- i) receive the second stream;
- ii) reduce an amount of one or more impurities in the second stream to form a third stream having a reduced impurity content;
- and iii) output the third stream;
- a reclamation section configured to:
- i) receive the third stream;
- ii) reduce an amount of salt in the third stream to form a fourth stream having a reduced salt content;
- and iii) output the fourth stream;
- and
- a regeneration section configured to:
- i) receive the fourth stream;
- ii) reduce an amount of water in the fourth stream to form a fifth stream having a reduced water content;
- and iii) output the fifth stream,
- wherein the filtration section comprises:
- a first thermal cyclic filter;
- a first porous membrane filter downstream of the first thermal cyclic filter;
- a second porous membrane filter downstream of the first porous membrane filter;
- a third porous membrane filter downstream of the second porous membrane filter;
- and
- a first vacuum pump configured to maintain the filtration section at a first pressure.
21 more elements
Dependencies are inferred from the claim text.