IP Library › Granted Patent US 12,515,183
Granted Patent B2
US 12,515,183 · App. 18/242,811 · Granted Jan 6, 2026

Process vessel entry zones

Inventors: Bradley Glover (Houston, TX); Austin Schneider (Humble, TX); John N. Glover (Houston, TX); Peter Gregory Ham (Houston, TX)
Assignee: Crystaphase Products, Inc.
B01J4/001B01J20/02C10G67/02
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Quick Facts
Patent No.
US 12,515,183
App. No.
18/242,811
Granted
Jan 6, 2026
Kind
B2
Abstract

Process vessels can contain one or more entry zones containing stability-improving materials. The entry zones address bed movement and filtration problems. The stability-improving material can be positioned above a treating zone or above a processing bed within the vessel. Entry Zones are intended to improve the stability of downstream operations.

Claims (34)

1 . A method of providing improved stability and filtration of stream flow for fluid process streams in a process vessel comprising:

passing the fluid process streams through a processing zone within the process vessel, the processing zone containing one or more beds of processing elements; and

prior to passing the fluid process streams through the processing bed, passing the fluid process streams through an entry zone located upstream of the processing bed,

wherein the entry zone contains a bed of stability-improving materials having a porosity in the range from 67% to 87%, a density in the range from 30-60 lbs/ft 3 , and a weight per piece of 12-300 grams,

and wherein the stability-improving materials have internal voids capable of filtering particles from the fluid process stream flow,

and wherein the weight per piece of the stability-improving materials is 2-25 times greater than the weight per piece of the processing elements in the processing zone.

2 . The method of claim 1 , wherein the entry zone comprises a single bed of stability-improving materials.

3 . The method of claim 1 , wherein there is a treating zone downstream of the entry zone.

4 . The method of claim 3 , whereby the stability-improving material stabilizes and prevents movement of a plurality of treating elements in the treating zone.

5 . The method of claim 1 , where the internal void contains a network of interconnected pores.

6 . The method of claim 1 , where the internal void is tortuous.

7 . The method of claim 1 , where the internal void is 20%-42% of the entry zone volume.

8 . The method of claim 1 , where the internal void is 20%-40% of the entry zone volume.

9 . The method of claim 1 , where the internal void is 25%-42% of the entry zone volume.

10 . The method of claim 1 , where the internal void is 25%-35% of the entry zone volume.

11 . The method of claim 1 , where the internal void is 30%-40% of the entry zone volume.

12 . The method of claim 1 , where the internal void is 30%-35% of the entry zone volume.

13 . The method of claim 1 , where the internal void is 20%-35% of the entry zone volume.

14 . The method of claim 1 , where the weight per piece is 12-200 grams.

15 . The method of claim 1 , where the weight per piece is 30-200 grams.

16 . The method of claim 1 , where the weight per piece is 70-200 grams.

17 . The method of claim 1 , where the weight per piece is 70-300 grams.

18 . The method of claim 1 , where the weight per piece is 35-300 grams.

19 . The method of claim 1 , where the weight per piece is 25-200 grams.

20 . The method of claim 1 , whereby the stability-improving material stabilizes and prevents movement of the processing elements in the processing bed.

21 . The method of claim 1 , wherein the fluid process stream flow exiting the entry zone flows directly into the processing bed.

22 . The method of claim 1 wherein the composition of the stability-improving materials in the entry zone comprises one or more of iron, tungsten, zirconium, titania, and alumina.

23 . The method of claim 1 wherein the composition of the stability-improving materials in the entry zone comprises one or more oxides of iron, tungsten, zirconium, titania, and alumina.

24 . The method of claim 1 wherein the composition of the stability-improving materials in the entry zone comprises one or more carbides of iron, tungsten, zirconium, titania, and alumina.

25 . The method of claim 1 , wherein the stability-improving materials in the entry zone are secured to the internal walls of the process vessel.

26 . A process vessel comprising:

a processing zone containing one or more beds of processing elements; and

an entry zone located upstream of the processing bed, the entry zone comprising a bed of stability-improving materials having a porosity in the range from 67% to 87%, a density in the range from 30-60 lbs/ft 3 , a weight per piece of 25-200 grams, and an internal void capable of capturing undesired species from a fluid process stream flow passing therethrough, wherein the weight per piece of the stability-improving materials is 2-25 times greater than the weight per piece of the processing elements in the processing zone.

27 . The vessel of claim 26 , wherein the process vessel comprises a reformer, a hydrotreater, a naphtha hydrotreater, a fluid catalytic cracker gasoline treater unit, a hydrodesulfurization unit, an isomerization unit, or a sulfur recovery unit.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Sep 6, 2023
From: GLOVER, BRADLEY; SCHNEIDER, AUSTIN; GLOVER, JOHN N.; HAM, PETER GREGORY
To: CRYSTAPHASE PRODUCTS, INC.
Reel/Frame 064814/0801 →
Continuity (3)
Continuation 17470913 · Sep 9, 2021
Provisional Application 63076226 · Sep 9, 2020
Related Publication 20240066484A1 · Feb 29, 2024
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