Patents
US 7879225 B2: Energy efficient and throughput enhancing extractive process for aromatics recovery
- Granted
- 2011-02-01
- Filed
- 2008-07-08 application 12217676
- Type
- Utility · 37 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
An energy efficient, high throughput process for aromatics recovery can be readily implemented by revamping existing sulfolane solvent extraction facilities, or constructing new ones, so as to incorporate unique process operations involving liquid-liquid extraction and extractive distillation. Current industrial sulfolane solvent based liquid-liquid extraction processes employ a liquid-liquid extraction column, an extractive stripping column, a solvent recovery column, a raffinate wash column, and a solvent regenerator. The improved process for aromatic hydrocarbon recovery from a mixture of aromatic and non-aromatic hydrocarbons requires transformation of the extractive stripping column into a modified extractive distillation column. The revamping incorporates the unique advantages of liquid-liquid extraction and extractive distillation into one process to significantly reduce energy consumption and increase process throughput. The revamp entails essentially only piping changes and minor equipment adjustments of the original liquid-liquid extraction facility, and is therefore, reversible.
Source: PVGPATDIS, file of 2026-04-10 (ipg110201.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 |
|---|---|---|---|---|
| Fu-Ming Lee | Katy, TX | 19 | PVGPATDIS, file of 2026-04-10 | |
| Kuang-Yeu Wu | Plano, TX | 22 | PVGPATDIS, file of 2026-04-10 | |
| Tsung-Min Chiu | Kaohsiung, TW | 8 | PVGPATDIS, file of 2026-04-10 | |
| Zong-Ying Chen | Not reported | 2 | PVGPATDIS, file of 2026-04-10 | |
| Jyh-Haur Hwang | Dali, TW | 10 | PVGPATDIS, file of 2026-04-10 | |
| Tzong-Bin Lin | Chiayi, TW | 23 | PVGPATDIS, file of 2026-04-10 | |
| Hung-Chung Shen | Chiayi, TW | 16 | PVGPATDIS, file of 2026-04-10 | |
| Tung-Hsiung Kuo | Tainan, TW | 3 | PVGPATDIS, file of 2026-04-10 | |
| Yu-Ming Wu | Not reported | 8 | PVGPATDIS, file of 2026-04-10 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| 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 | C10G21/06 | 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 |
|---|---|---|---|---|---|
| 2008-07-08 | Assignment Assignment of assignor's interest | CHIU, TSUNG-MIN signed 2008-07-01 LEE, FU MING signed 2008-07-01 WU, KUANG-YEU signed 2008-07-01 HWANG, JYH-HAUR signed 2008-07-02 LIN, TZONG-BIN signed 2008-07-02 SHEN, HUNG-CHUNG signed 2008-07-02 CHEN, ZONG-YING signed 2008-07-07 KUO, TUNG-HSIUNG signed 2008-07-07 WU, YU-MING signed 2008-07-07 | CPC COPORATION, TAIWAN TAIPEI CITY AMT INTERNATIONAL, INC. PLANO, TX | 21279/736 | 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.