Control system for a compressor with presure-based subsystem, synthesis plant and control method
US-2019078574-A1 · Mar 14, 2019 · US
Method for the control of pressure in a loop for the preparation of ammonia or methanol
US12552677B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-12552677-B2 |
| Application number | US-202117918833-A |
| Country | US |
| Kind code | B2 |
| Filing date | May 14, 2021 |
| Priority date | May 18, 2020 |
| Publication date | Feb 17, 2026 |
| Grant date | Feb 17, 2026 |
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- Title
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- Abstract
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Abstract
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Method for the control of pressure in a loop for the preparation of ammonia or methanol by means of an anti-surge control valve of a compressor and/or a compressor flow regulation valve for the recirculation of loop recirculation gas at variating flow supply of fresh synthesis gas.
First claim
Opening claim text (preview).
The invention claimed is: 1 . A system for controlling pressure in a loop for the synthesis of ammonia or methanol, comprising: a make-up gas compressor configured to pressurize a make-up synthesis gas, a synthesis loop configured to receive a pressurized make-up synthesis gas from the make-up gas compressor, the synthesis loop comprising a synthesis reactor, a synthesis loop cooler, a loop recirculation compressor, a synthesis loop heater, and a pressure monitor; the synthesis reactor arranged to receive a heated loop recirculation gas from the synthesis loop heater and configured to provide an at least partially synthesized gas to the synthesis loop cooler; the synthesis loop cooler configured to cool the at least partially synthesized gas and separate into a product stream and a loop recirculation gas; the loop recirculation compressor arranged to receive the loop recirculation gas and configured to pressurize and provide a pressurized loop recirculation gas to the synthesis loop heater; wherein the loop recirculation compressor comprises an anti-surge valve and/or a compressor flow regulation valve in communication with the pressure monitor, the anti-surge valve and/or a compressor flow regulation valve being configured to control the flow of the loop recirculation gas through the anti-surge valve and/or a compressor flow regulation valve to obtain a substantially constant pressure in the ammonia or methanol synthesis loop. 2 . The system according to claim 1 , wherein the compressor flow regulation valve is arranged in parallel with the anti-surge valve. 3 . The system according to claim 1 , further comprising a second anti-surge valve configured to control the flow of ammonia or methanol make-up synthesis gas provided by the make-up gas compressor to the synthesis loop. 4 . The system according to claim 1 , further comprising a high pressure loop separator arranged in the loop for the preparation of ammonia or methanol, for controlling temperature. 5 . The system according to claim 1 , further comprising a loop pressure controller downstream or upstream of the recirculation compressor for additionally controlling the loop recirculation gas.
Assignees
Inventors
Classifications
by electrolysis of water · CPC title
one step being the formation of initial mixture of carbon oxides and hydrogen for synthesis · CPC title
- C01C1/0482Primary
Process control; Start-up or cooling-down procedures · CPC title
Processes · CPC title
Carbon monoxide or syngas · CPC title
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- What does patent US12552677B2 cover?
- Method for the control of pressure in a loop for the preparation of ammonia or methanol by means of an anti-surge control valve of a compressor and/or a compressor flow regulation valve for the recirculation of loop recirculation gas at variating flow supply of fresh synthesis gas.
- Who is the assignee on this patent?
- Topsoe As
- What technology area does this patent fall under?
- Primary CPC classification C01C1/0482. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Feb 17 2026 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 4 related publications on this page (citations in our corpus or others sharing the same primary CPC).