{"id":2378,"date":"2019-04-25T14:52:26","date_gmt":"2019-04-25T12:52:26","guid":{"rendered":"https:\/\/www.vecom-group.com\/en-uk\/?page_id=2378"},"modified":"2020-02-26T13:17:09","modified_gmt":"2020-02-26T12:17:09","slug":"cleaning-on-the-water-and-steam-side","status":"publish","type":"page","link":"https:\/\/www.vecom-group.com\/en-uk\/on-site-services\/boiler-cleaning\/cleaning-on-the-water-and-steam-side\/","title":{"rendered":"Cleaning on the water and steam side"},"content":{"rendered":"
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Removal of unwanted matter after the construction phase<\/h2>\n

Before a power plant can be commissioned, the entire steam and water side must be cleaned (by means of chemical cleaning and \/ or steam blowing). After completing the construction phase of the power plant, this cleaning is carried out to remove unwanted matter that can affect the steam quality.<\/p>\n

Common contaminants, including loose dirt particles, oil \/ grease and atmospheric contaminants, iron oxides and silicates are removed in this phase. Silicates are only removed when cleaning with hydrofluoric acid.<\/p>\n<\/div>\n<\/div><\/div><\/div><\/div>

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\n\t

Acid cleaning or boiling out<\/h2>\n

To achieve the required surface cleanliness of the different systems, the steam and water cycle is chemically cleaned by means of acid cleaning or boiling out. The chemical cleaning is followed by steam blowing the system.<\/p>\n

The advantage of acid cleaning prior to steam blowing is that mill scale and silicates (when using hydrofluoric acid) are removed. As a result, fewer steam blowing cycles are required. A lot of demineralised water and gas are used during steam blowing. Shorter steam blowing can therefore result in enormous savings in both time and money.<\/p>\n<\/div>\n<\/div><\/div><\/div><\/div>

<\/div><\/div><\/div>
\n
\n\t

The chemical cleaning is performed according to VGB guidelines and depending on the requirements of the (end) customer the following types of cleaning can be applied:<\/p>\n

    \n
  1. Boiling out of the water side<\/strong><\/a>
    \nSuitable for: carbon steel, stainless steel, alloys with chrome or P91\/92
    \nRemoves: loose iron oxides (rust), very light oil, grease and atmospheric dirt & loose silicates.<\/li>\n
  2. Cleaning based on hydrochloric acid<\/strong><\/a>
    \nSuitable for: carbon steel, copper
    \nRemoves: iron oxides (rust), welding skin, mill scale and annealing skin<\/li>\n
  3. Cleaning based on hydrofluoric acid<\/strong><\/a>
    \nSuitable for: carbon steel, stainless steel, alloys with chrome or P91\/92
    \nRemoves: iron oxides (rust), welding skin, mill scale, annealing skin & silicate compounds.<\/li>\n
  4. Cleaning based on citric acid<\/strong><\/a>
    \nSuitable for: carbon steel, stainless steel, alloys with chrome or P91\/92
    \nRemoves: iron oxides (rust), at high temperatures or after adding of additional chemistry, also suitable for removing mill scale and annealing skin.<\/li>\n
  5. Cleaning based on EDTA\/Demclean 94<\/strong><\/a>
    \nSuitable for: carbon steel, stainless steel, alloys with chrome or P91\/92
    \nRemoves: iron oxides (rust) and very light grease \/ atmospheric dirt.<\/li>\n<\/ol>\n<\/div>\n<\/div><\/div><\/div><\/div><\/div>","protected":false},"excerpt":{"rendered":"

    Removal of unwanted matter after the construction phase Before a power plant can be commissioned, the entire steam and water side must be cleaned (by means of chemical cleaning and \/ or steam blowing). After completing the construction phase of the power plant, this cleaning is carried out to remove unwanted matter that can affect […]<\/p>\n","protected":false},"author":3,"featured_media":3791,"parent":2368,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"templates\/service-page.php","meta":{"_acf_changed":false,"footnotes":""},"class_list":["post-2378","page","type-page","status-publish","has-post-thumbnail","hentry"],"acf":[],"yoast_head":"\nCleaning on the water and steam side - Vecom Group<\/title>\n<meta name=\"description\" content=\"Before a power plant can be commissioned, the entire steam and water side must be cleaned (by means of chemical cleaning and \/ or steam blowing)\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.vecom-group.com\/en-uk\/on-site-services\/boiler-cleaning\/cleaning-on-the-water-and-steam-side\/\" \/>\n<meta property=\"og:locale\" content=\"en_GB\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Cleaning on the water and steam side - 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