REMOVAL OF H{sub 2}S AND SO{sub 2} BY CaCO{sub 3}-BASED SORBENTS AT HIGH PRESSURES

PDF Version Also Available for Download.

Description

During the six months of this reporting period, we did more experiments on the study of the behavior of the sulfidation of precalcined limestones in the presence of small amounts of oxygen. Sulfidation experiments in the presence of oxygen were carried out because in past experiments we had observed that leaks of oxygen into the feed mixture led to completely different results from those obtained in the absence of oxygen. The new experiments reaffirmed the observations that we had made in our previous studies. The behavior of the sulfidation of limestone was found to depend strongly, in both a qualitative ... continued below

Physical Description

40 pages

Creation Information

Sotirchos, Prof. Stratis V. August 1, 1998.

Context

This report is part of the collection entitled: Office of Scientific & Technical Information Technical Reports and was provided by UNT Libraries Government Documents Department to Digital Library, a digital repository hosted by the UNT Libraries. More information about this report can be viewed below.

Who

People and organizations associated with either the creation of this report or its content.

Sponsor

Publishers

Provided By

UNT Libraries Government Documents Department

Serving as both a federal and a state depository library, the UNT Libraries Government Documents Department maintains millions of items in a variety of formats. The department is a member of the FDLP Content Partnerships Program and an Affiliated Archive of the National Archives.

Contact Us

What

Descriptive information to help identify this report. Follow the links below to find similar items on the Digital Library.

Description

During the six months of this reporting period, we did more experiments on the study of the behavior of the sulfidation of precalcined limestones in the presence of small amounts of oxygen. Sulfidation experiments in the presence of oxygen were carried out because in past experiments we had observed that leaks of oxygen into the feed mixture led to completely different results from those obtained in the absence of oxygen. The new experiments reaffirmed the observations that we had made in our previous studies. The behavior of the sulfidation of limestone was found to depend strongly, in both a qualitative and a quantitative sense, on the level of the oxygen concentration in the feed. For small concentration of oxygen, the weight gained by the calcined sample during sulfidation in a N{sub 2}-H{sub 2}S atmosphere presented a maximum, whereas for concentrations above 0.5-0.8%, it increased continuously, reaching in some cases values that corresponded to complete conversion of CaO to CaSO{sub 4}. The maximum in the variation of the weight gain with time tended to become more pronounced as the intraparticle diffusional limitations were decreased. The use of different sample sizes showed that the interparticle diffusional limitations had a similar effect, and this led us to the conclusion that the main cause for the presence of a maximum in the variation of the weight of the sample during sulfidation in the presence of oxygen is the formation of a volatile product (possibly Ca) in the CaS-CaSO{sub 4} solid-solid reaction.

Physical Description

40 pages

Notes

OSTI as DE00786369; NTIS

Source

  • Other Information: PBD: 1 Aug 1998

Language

Item Type

Identifier

Unique identifying numbers for this report in the Digital Library or other systems.

  • Report No.: FG22-95PC95217--07
  • Grant Number: FG22-95PC95217
  • DOI: 10.2172/786369 | External Link
  • Office of Scientific & Technical Information Report Number: 786369
  • Archival Resource Key: ark:/67531/metadc724603

Collections

This report is part of the following collection of related materials.

Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

What responsibilities do I have when using this report?

When

Dates and time periods associated with this report.

Creation Date

  • August 1, 1998

Added to The UNT Digital Library

  • Sept. 29, 2015, 5:31 a.m.

Description Last Updated

  • March 29, 2016, 9 p.m.

Usage Statistics

When was this report last used?

Yesterday: 0
Past 30 days: 0
Total Uses: 3

Interact With This Report

Here are some suggestions for what to do next.

Start Reading

PDF Version Also Available for Download.

Citations, Rights, Re-Use

Sotirchos, Prof. Stratis V. REMOVAL OF H{sub 2}S AND SO{sub 2} BY CaCO{sub 3}-BASED SORBENTS AT HIGH PRESSURES, report, August 1, 1998; Pittsburgh, Pennsylvania. (digital.library.unt.edu/ark:/67531/metadc724603/: accessed December 13, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.