Talk:Flue-gas desulfurization

message: It seems to me that two articles with almost identical titles should be merged. mbeychok 01:34, 13 March 2006 (UTC)
replies: text: Since the merging was not done and since the contents of both articles were word-for-word identical, I merged them. - mbeychok 07:25, 27 March 2006 (UTC)
thread_title: Merged

message: Cadmium, I deleted the section you added about scrubbing in other industries because that should be a completely separate article or multiple articles. Removing hydrogen from sewage gases is not Flue Gas Desulfurization. Aqueous solutions of monoethanolamine and diethanolamine have been used for over 50 years to remove acid gases such as hydrogen sulfide and carbon dioxide from raw natural gas and from petroleum refinery gases. Almost every petroleum refinery in the world has an amine scrubbing unit for that purpose. There are many other uses of scrubbing in many different industries for removing many different chemicals from many different gases. Such processes are distinctly different than removing sulfur dioxide from combustion flue gases ... and they deserve an article of their own. I don't think we should turn this article into a compilation of the chemistry involved in every conceivable type of scrubber.
By the way, I would appreciate confirmation that you received the email I sent you in regard to the information you wanted. - mbeychok 23:33, 18 April 2006 (UTC)
thread_title: This article is about Flue Gas Desulfurization and not about scrubbers for other purposes

message: I moved the mention of a different method from the opening paragraph. They really should not be in the introduction at all. Think about moving them either to a section at the end or to the "see also" section. --Blainster 02:49, 26 June 2006 (UTC)
replies: text: Will do sometime tomorrow. - mbeychok 07:36, 26 June 2006 (UTC)
thread_title: Alternate methods

message: This request is because I assume that ash is refering to either Fly ash or bottom ash. Thanks! ----Knulclunk 05:37, 26 January 2007 (UTC)
replies: text: Knulclunk, I believe that I have addressed your concern by linking the word ash in this article to ash which defines the total ash content of coal (both fly ash and bottom ash). - mbeychok 00:57, 30 January 2007 (UTC)
thread_title:  Ash Disambiguation 

message: Wikipedia policy regarding words that have alternative spellings is that the spelling used in the earliest chronological introduction of such words in an article shall be used in that article from then on. See Wikipedia:Manual of Style#National varieties of English. 
Since the originators of this article used U.S. English spellings rather than British English spellings when choosing to use the words desulfurization, sulfur dioxide and sulfur in creating this article means that U.S. English spellings are always to be retained in this article. This does not mean that either spelling is "right" or "wrong". It simply means that it is Wikipedia policy. - mbeychok 21:00, 5 June 2007 (UTC)
thread_title:  U.S. spellings versus British spellings 

message: I fail to to see how this article belongs to WikiProject Physics or how anyone could think so ... unless one believes that every technical aricle is related to physics. Therefore, I removed the tag. - mbeychok (talk) 01:46, 16 January 2008 (UTC)
thread_title:  Removed "WikiProjectPhysics" tag 

message: The facts and statistics section states the information was obtained from a US EPA published fact sheet. This fact sheet appears to make no reference to Scottish Power's Longannet power station. The FGD process used at Longannet is that of SO2 removal by way of absorption in seawater inside a packed column. This process does not appear to be discussed in the article. The plant installation was undertaken by a consortium of Alstom and Amec, and, according to Scottish Power's web site, the investment was around £170 million, not the £400 million quoted.--Tim J Wright (talk) 22:06, 6 July 2008 (UTC)
thread_title:  Query regarding facts and statistics 

message: I propose to merge the Wellman-Lord Process as one of the flue gas desulfurization processes. Currently the Wellman-Lord Process article is a short and it is questionable if there is enough information for a separate article. If it remains as a separate article, this article here is needing a summary of this process and a wikilink to the Wellman-Lord Process. Beagel (talk) 19:03, 17 March 2009 (UTC)
replies: text: Beagel, the Wellman-Lord Process is indeed a FGD system that generates a saleable by-product (sulfuric acid). I agree with you, with the mention that if not merged, it should be enriched with details. Please also ask mbeychok's opinion. The Vindictive (talk) 17:15, 22 March 2009 (UTC)
thread_title:  Merge proposal – Wellman-Lord Process 

message: Only one photo can be seen in such long article? Amazing? Please add more photos. -- Extra999 (talk) 17:10, 6 February 2010 (UTC)
thread_title: Very few photos

message: 1) Normally the topic sentence introduces the topic. The introduction had the topic sentence at the end of the section in its own paragraph. 
2) The basic principles section has no basic principles. The basic principle of this process appears to be the first sentence of the next section. 
"SO2 is an acid gas, and, therefore, the typical sorbent slurries or other materials used to remove the SO2 from the flue gases are alkaline. "
The basic principle section appears to be qualifiers on design processes....if the section is about design let it say so. If it is about chemical principles then it should have information about them....
Basic principles
Most FGD systems employ two stages: one for fly ash removal and the other for SO2 removal. Attempts have been made to remove both the fly ash and SO2 in one scrubbing vessel. However, these systems experienced severe maintenance problems and low removal efficiency. In wet scrubbing systems, the flue gas normally passes first through a fly ash removal device, either an electrostatic precipitator or a wet scrubber, and then into the SO2-absorber. However, in dry injection or spray drying operations, the SO2 is first reacted with the sorbent, and then the flue gas passes through a particulate control device.
Another important design consideration associated with wet FGD systems is that the flue gas exiting the absorber is saturated with water and still contains some SO2. These gases are highly corrosive to any downstream equipment such as fans, ducts, and stacks. Two methods that can minimize corrosion are: (1) reheating the gases to above their dew point, or (2) choosing construction materials and design conditions that allow equipment to withstand the corrosive conditions. Both alternatives are expensive, and engineers designing the system determine which method to use on a site-by-site basis.
[edit]Scrubbing with a basic solid or solution  — Preceding unsigned comment added by Primacag (talk • contribs) 15:48, 14 October 2011 (UTC)
thread_title:  Grammatical and content points 

message: Any reason that the two empty sections are in place for almost 2 years?  If no one has added to them in that time frame, I would assume that there isn't much to say on the topic.  Let's erase them or put some content in them.JSR (talk) 09:47, 1 October 2012 (UTC)
replies: text: I agree with you. mbeychok (talk) 14:35, 1 October 2012 (UTC)
replies: text: So, it is time for them to go.  You can or I can.JSR (talk) 14:46, 1 October 2012 (UTC)
replies: text: You have, so I won't. mbeychok (talk) 18:07, 1 October 2012 (UTC)

text: I got unbusy first apparently.JSR (talk) 18:14, 1 October 2012 (UTC)
thread_title: Empty sections

message: Anyone thought of adding info on what the byproducts are used for?  I know some of it used to make wallboard, which is a really cool application.  I used to work in the gypsum industry.
SusanChana (talk) 19:32, 14 October 2014 (UTC)
thread_title:  Byproducts of Flue-gas desulfurization 

message: there is currently no information about using Iron Oxide as a removal method.  — Preceding unsigned comment added by 59.100.68.246 (talk) 00:48, 27 June 2017 (UTC)
thread_title:  Add information on use of Iron Oxide as a method to remove Sulfur 

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thread_title:  External links modified 

message: *This essentially seems like a wet process / Spray Tower ,  but it is done at high temperature after initial ash removal?  I think "novel integrated desulfurization (NID)" is a brand name for this process? I just stumbled upon the term in some papers, checked to see if it was on Wikipedia, and it wasn't (at least in my searching!), so i'd like to ask what you think about this?
I'll dump some papers i found on it below (nothing advanced, i'm not really qualified, this was just some quick searching) :
https://www.semanticscholar.org/paper/ALSTOM-POWER'S-FLASH-DRYER-ABSORBER-FOR-FLUE-GAS-%C3%85hman-Barranger/441d518216e6de822f5fcf343dc0119ff5e7f88d
https://www.osti.gov/servlets/purl/812005 (Specifically the "10.0 ACRONYMS AND ABBREVIATIONS" on Page 238 of 238 )
https://www.slideserve.com/shayna/pollution-control-systems-bringing-you-a-world-of-experience-in-clean-air-solutions
--Eric Lotze (talk) 04:15, 15 March 2022 (UTC)
thread_title:  Mention of Flash Dryer Absorber (FDA) Technology