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1. WO2019050702 - SYSTEMS AND METHODS OF OXIDIZING FLUIDS

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[ EN ]

CLAIMS

What is claimed is:

1. A method of oxidizing a fluid, comprising:

providing a process fluid to a reactor at a first temperature;

providing a heat transfer fluid in a recirculation loop to the reactor at a second temperature higher than the first temperature;

transferring heat from the heat transfer fluid to the process fluid within the reactor;

after transferring heat from the heat transfer fluid to the process fluid, oxidizing at least one component of the process fluid in an exothermic reaction to form a reaction product in the process fluid within the reactor; and

transferring heat from the process fluid to the heat transfer fluid within the reactor after formation of at least a portion of the reaction product.

2. The method of claim 1 , wherein the process fluid comprises ethane.

3. The method of claim 1 , wherein the process fluid comprises ethylene.

4. The method of claim 1, wherein the reaction product comprises ethylene.

5. The method of claim 1, wherein the reaction product comprises ethylene oxide.

6. The method of claim 1 , wherein the reactor comprises a shell and a plurality of tubes comprising catalyst material.

7. The method of claim 6, wherein the providing a reaction fluid to the reactor comprises providing the reaction fluid into the plurality of tubes.

8. The method of claim 1 , wherein the reactor comprises a fluidized-bed reactor.

9. The method of claim 1 , wherein the reactor comprises a packed-bed reactor.

10. The method of claim 1, further comprising heating the process fluid as the process fluid enters the reactor.

1 1. The method of claim 1, further comprising preheating the process fluid before the process fluid enters the reactor.

12. The method of claim 1, wherein the heat transfer fluid comprises an organic material.

13. The method of claim 12, wherein the heat transfer fluid comprises biphenyl and diphenyl oxide.

14. The method of claim 1, wherein the heat transfer fluid comprises water.

15. The method of claim 14, wherein the heat transfer fluid comprises supercritical water.

16. The method of claim 14, wherein the heat transfer fluid comprises subcritical water.

17. The method of claim 1 , wherein a difference between a maximum temperature of the process fluid and a temperature at which the process fluid leaves the reactor is less than about 20°C.

18. The method of claim 17, wherein a difference between a maximum temperature of the process fluid and a temperature at which the process fluid leaves the reactor is less than about 15°C.

19. The method of claim 18, wherein a difference between a maximum temperature of the process fluid and a temperature at which the process fluid leaves the reactor is less than about 10°C.

20. The method of claim 1, wherein the process fluid is maintained below about 400°C at all points within the reactor.

21. The method of claim 20, wherein the process fluid is maintained below about 350°C at all points within the reactor.

22. The method of claim 21, wherein the process fluid is maintained below about 330°C at all points within the reactor.

23. The method of claim 1, wherein the providing a heat transfer fluid in a recirculation loop to the reactor comprises flowing the heat transfer fluid and the process fluid in opposite directions within the reactor.

24. The method of claim 1, wherein the providing a heat transfer fluid in a recirculation loop to the reactor comprises flowing the heat transfer fluid and the process fluid in a common direction within the reactor.

25. The method of claim 1, wherein oxidizing at least one component of the process fluid in an exothermic reaction comprises contacting the process fluid with a catalyst within the reactor.

26. The method of claim 25, further comprising contacting the process fluid with another catalyst to reduce a concentration of at least one byproduct in the process fluid.

27. The method of claim 1 , wherein a mass flow rate of the heat transfer fluid in the reactor is at least about 10 times the mass flow rate of the process fluid in the reactor.

28. The method of claim 27, wherein a mass flow rate of the heat transfer fluid in the reactor is at least about 50 times the mass flow rate of the process fluid in the reactor.

29. The method of claim 28, wherein a mass flow rate of the heat transfer fluid in the reactor is at least about 100 times the mass flow rate of the process fluid in the reactor.

30. A system for oxidizing a fluid, comprising:

a reactor configured to receive a process fluid at a first temperature, and after transferring heat from a heat transfer fluid to the process fluid, oxidize at least one component of the process fluid in an exothermic reaction to form a reaction product in the process fluid; and

a recirculation loop configured to:

provide a heat transfer fluid to the reactor at a second temperature higher than the first temperature;

transfer heat from the heat transfer fluid to the process fluid within the reactor; and transfer heat from the process fluid to the heat transfer fluid within the reactor after formation of at least a portion of the reaction product.