Patents
US 9649638 B2: Process and apparatus for online rejuvenation of contaminated sulfolane solvent
- Granted
- 2017-05-16
- Filed
- 2013-02-01 application 13757733
- Type
- Utility · 15 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
A continuous online process for rejuvenating whole stream of contaminated lean sulfolane in an extraction system is provided. A rejuvenator is installed in the solvent: circulation loop to remove the contaminants continuously to keep the solvent clean, effective and less corrosive. The rejuvenator includes a high pressure vessel with a removable cover and a round rack with vertical stainless steel tubes fitted in the high pressure vessel. A magnetic bar is placed in each stainless steel tube. A screen cylinder is installed outside the ring of stainless steel tubes. As the contaminated sulfolane is passed through the rejuvenator, the rejuvenator picks up contaminants. The rejuvenator can be dissembled to remove the contaminants periodically. The rejuvenator is simple in construction, reliable in operation, and low in operation and maintenance costs. With this rejuvenator, the extraction system operates at high efficiency and high capacity without the dreaded corrosion.
Source: PVGPATDIS, file of 2026-04-10 (ipg170516.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| CPC CORPORATION, TAIWAN 57 patents | Foreign company or organization | Taipei, TW | PVGPATDIS, file of 2026-04-10 | |
| AMT International Inc. 26 patents | US company or organization | Plano, TX | AMT INTERNATIONAL, INC. State business registration EXACT high confidence: identical full name and state | PVGPATDIS, file of 2026-04-10 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| Ping-Wen Yen | Taipei, TW | 3 | PVGPATDIS, file of 2026-04-10 | |
| Yuh-Sheve Ho | Taipei, TW | 3 | PVGPATDIS, file of 2026-04-10 | |
| Hung-Tzu Chiu | Taipei, TW | 5 | PVGPATDIS, file of 2026-04-10 | |
| Chung-Jong Hwu | Taipei, TW | 3 | PVGPATDIS, file of 2026-04-10 | |
| June-Cheng Chang | Taipei, TW | 3 | PVGPATDIS, file of 2026-04-10 | |
| Tzong-Bin Lin | Taipei, TW | 23 | PVGPATDIS, file of 2026-04-10 | |
| Tsoung Y. Yang | Philadelphia, PA | 1 | PVGPATDIS, file of 2026-04-10 | |
| Cheng-Tsung Hong | Taipei, TW | 11 | PVGPATDIS, file of 2026-04-10 | |
| Hung-Chung Shen | Taipei, TW | 16 | PVGPATDIS, file of 2026-04-10 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| B03C | Magnetic or electrostatic separation of solid materials from solid materials or fluids; separation by high-voltage electric fields | B03C1/015 | PVGPATDIS, file of 2026-04-10 |
| B01D | Separation | B01D29/23 | PVGPATDIS, file of 2026-04-10 |
| C10G | Cracking hydrocarbon oils; production of liquid hydrocarbon mixtures, e.g. by destructive hydrogenation, oligomerisation, polymerisation ; recovery of hydrocarbon oils from oil-shale, oil-sand, or gases; refining mixtures mainly consisting of hydrocarbons; reforming of naphtha; mineral waxes | C10G21/28 | PVGPATDIS, file of 2026-04-10 |
Cooperative Patent Classification, as currently assigned (one row per subclass).
Assignments and security interests
| Recorded | What | From | To | Reel/frame | Source |
|---|---|---|---|---|---|
| 2013-02-06 | Assignment Assignment of assignor's interest | CHANG, JUNE-CHENG signed 2013-02-04 CHIU, HUNG-TZU signed 2013-02-04 HONG, CHENG-TSUNG signed 2013-02-04 HWU, CHUNG-JONG signed 2013-02-04 LIN, TZONG-BIN signed 2013-02-04 YEN, PING-WEN signed 2013-02-04 HO, YUH-SHEVE signed 2013-02-05 SHEN, HUNG-CHUNG signed 2013-02-05 YAN, TSOUNG Y. signed 2013-02-05 | CPC CORPORATION, TAIWAN TAIPEI AMT INTERNATIONAL, INC. PLANO, TX | 29760/44 | ECORSEXC, file of 2026-09-25 |
Documents recorded with the USPTO Assignment Recordation Branch that list this patent. A security interest is a lender’s claim on the patent as collateral; a release ends it.
USPTO bulk data: PatentsView granted patents, disambiguated (PVGPATDIS) for patents, assignees, inventors, places and CPC categories; the USPTO Patent Assignment Dataset (ECORSEXC) for assignments and security interests. Patents filed in the last 20 years. No claims or full text. Links to other records are by name (and state): EXACT means the identical full name and state; FUZZY means a looser name match, with the confidence shown.