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| Item Title： |
Catalysts for Reduction of SO2 to Elemental Sulfur |
| Item Sort： |
Chemistry |
| Implementation Address： |
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| aggregate Investment： |
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| Mode： |
Cooperation |
| Ratio Between Investments in： |
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| Present Condition： |
APPLICATIONS OF TECHNOLOGY:
*Oil refineries
*IGCC
*SO2 regenerative scrubbers
*Smelters
*Geothermal energy production plants
STATUS:
*Available for licensing
*U.S. Patents #5,494,879 & 6,297,189
CONTACT:
Technology Transfer Department
E.O. Lawrence Berkeley National Laboratory
MS 90-1070
Berkeley, CA 94720
(510) 486-6467
FAX: (510) 486-6457
TTD@lbl.gov |
| Item Introduction： |
Oil refineries, coal-based power plants, smelters, and geothermal energy production plants generate sulfur acid gases, H2S and/or SO2. These acid gases must be treated because they are not permitted for release to the atmosphere. Currently, the most commonly used treatment method involves the modified Claus process to convert these acid gases to elemental sulfur; however, due to the thermodynamic equilibrium limitation of the Claus reaction, typical overall sulfur recovery ranges from 72-74%, 93-95%, and 95-97% for 1-stage Claus, 2-stage Claus, and 3-stage Claus plants, respectively.
Researchers at Lawrence Berkeley National Laboratory (LBNL) have developed a technique for the treatment of SO2 and H2S. This technique uses a catalyst for the reduction of SO2 by H2S, H2, CO, and/or synthesis gas to elemental sulfur. Using 1-stage reactor, this catalyst is capable of achieving as much as 97% sulfur recovery from gas streams containing low SO2 concentration (Claus plants), medium SO2 concentration (IGCC plants), as well as high SO2 concentration (regenerative SO2 scrubbers). Inexpensive to manufacture, the catalyst is composed of a mixture of common transition metal sulfides on alumina. |
| feasibility analysis： |
*High conversion rate: High SO2 converstion to elemental sulfur can be obtained on 1st stage Claus head gas, 1st stage Claus tail gas, 2nd stage Claus tail gas, IGCC hot gas, and pure SO2 gas with only 1-stage reactor.
*Capable of converting SO2 and H2S to elemental sulfur with efficiency more than that predicted by Claus equilibrium.
*Single-stage reactor: Only one single-stage reactor is required to obtain a high yield of elemental sulfur.
*Achieved as much as 97% conversion rates in laboratory experiments.
*Inexpensive catalyst: Common transition metal sulfides. |
| Correlative Files： |
No File
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| Promulgator Detail |
| Full name: |
administrator |
| Country: |
CN |
| City: |
Dalian |
| Company Name: |
teloon Soft Strategy Co.,LTD |
| Homepage: |
http://www.hichem.com |
| E-mail: |
Reply |
| Phone: |
86-411-82811662 |
| Fax: |
86-411-82819667 |
| Company Address: |
26 Renmin Road ,Dalian China |
| Zip/Postal Code: |
116001 |
| Introduction: |
As a professional E-information service platform with authoritative news and reports in chemical industry of chinese export and import market.Hichem has been received universally and praised highly since its established in 2001.In 2003,by joint effort of teloon chemicals and teloon soft strategy company(TSSC),Hichem team endeavored to recomposition the site ascribed to market requirement as well as offering our better service.Hichem focused on business to biusiness of new chemicals,fine chemicals,high chemicals and special chemicals.So naturally it is the very one-stop website for chemical information.Our sellers worldwide and build global on-line trade in the chemical industry. |
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