Comparison of prices, construction time, and service life for several processes of chimney anti-corrosion materials
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This post was last edited by yuchenchf on 2011-11-4 at 11:44. I. The main materials used for corrosion protection of desulfurization chimneys in China currently include the following: 1. Composite titanium plates, 2. BINGAODE foam bricks, 3. Coatings (resins, scales), 4. Acid-resistant mortar, 5. Fiberglass, 6. Vitreous bricks, etc. II. The main options are: 1. Inner cylinder made of composite titanium plate ； 2. Acid-resistant steel inner cylinder with Gembord foam bricks ； 3. Ordinary carbon steel inner cylinder with BINGAODE foam bricks ； 4. Coating on the acid-resistant steel inner cylinder ； 5. Coated ordinary steel inner cylinder ； 6. Pouring acid-resistant mortar into concrete chimneys ； 7. Glass fiber reinforced plastic inner cylinder ； 8. Acid-resistant steel inner cylinder with domestically produced vitrified bricks ； 9. Ordinary carbon steel inner cylinder with domestically produced vitrified bricks ； 10. Use BINGAODE foam bricks for the construction of concrete chimneys ； 11. Construction of concrete chimneys using domestically produced vitrified bricks ； 12. Spraying coating on concrete chimneys. 13. Apply Savizhen coating to newly built acid-resistant steel and ordinary carbon steel chimneys. 14. Apply Savizhen coating to ordinary carbon steel chimneys as part of technical upgrades. 15. For technically upgraded concrete chimneys, acid-resistant steel is used for the inner lining; ordinary carbon steel chimneys are coated with Savinco coating. III. Price: 1. Composite titanium plate – 2700–3000 yuan per square meter ； 2. Acid-resistant steel: 450–500 yuan per square meter ； 3. Ordinary carbon steel: 270---300 yuan per square meter ； 4. BINGAODE foam brick: 2,300–2,700 yuan per square meter ； 5. Domestic resin: 800---900 yuan per square meter ； 6. Glass flakes: 200-600 yuan per square meter ； 7. Sawei Zhen coating: 780 yuan per square meter ； 8. Acid-resistant mortar: 250---500 yuan per square meter ； 9. Glass fiber reinforced plastic inner cylinder: 1,500---2,000 yuan per square meter ； 10. Domestic vitrified tiles: 500---800 yuan per square meter ； IV. Construction period: 1. Composite titanium plate inner cylinder: 90 days 2. Acid-resistant steel inner cylinder with BINGAODE foam bricks: 60 days 3. Ordinary carbon steel inner cylinder with BINGAODE foam bricks: 60 days 4. Acid-resistant steel inner cylinder with coating: 25 days 5. Ordinary steel inner cylinder with coating: 25 days 6. Pouring acid-resistant mortar for concrete chimneys: 70 days 7. Glass fiber reinforced plastic inner cylinder: 80 days 8. Acid-resistant steel inner cylinder with domestic vitrified bricks: 60 days 9. Ordinary carbon steel inner cylinder with domestic vitrified bricks: 60 days 10. Constructing BINGAODE foam bricks for concrete chimneys: 70 days 11. Constructing domestic vitrified bricks for concrete chimneys: 70 days 12. Spraying a coating on concrete chimneys: 30 days 13. Spraying steel chimneys using SAWEIZHEN method: 20 days 14. Spraying concrete chimneys using SAWEIZHEN method: 25 days V. Service life: 1. Composite titanium plate inner cylinder ； After 3 years of use of this solution, some chimney welds have leaked, and their service life is uncertain. 2. Acid-resistant steel inner cylinder with Gembord foam bricks ； After three years of use of this solution, some cases of failure occurred; its usage period abroad is 15 years. 3. Ordinary carbon steel inner cylinder with BINGAODE foam bricks ； After three years of use of this solution, some cases of failure occurred; its usage period abroad is 15 years. 4. Acid-resistant steel inner cylinder with resin coating ； After three years of use, the solution failed within half a year due to detachment and cracking; 90% failure rate ； Some domestically produced resin coatings have been in use for one year, with an uncertain service life. 5. Coated ordinary steel inner cylinder ； After three years of applying the plan, 90% failed ； Some domestically produced resin coatings have been in use for one year, with an uncertain service life. 6. Pouring acid-resistant mortar into concrete chimneys ； It fell off after half a year of use. 7. Glass fiber reinforced plastic inner cylinder ； It has been in use abroad for 10 years. 8. Acid-resistant steel inner cylinder with domestically produced vitrified bricks ； It fell off after half a year of use. 9. Ordinary carbon steel inner cylinder with domestically produced vitrified bricks ； It fell off after half a year of use. 10. Construction of concrete chimneys using BINGAODE foam bricks ； Operated abroad for 15 years 11. Concrete chimney construction using domestically produced vitrified bricks ； It fell off after half a year of operation in China. 12. Spraying coating on concrete chimneys. 90% failure ； Some domestically produced resin coatings have been in use for half a year, with an uncertain service life. 13. The Sawei Zhen coating maintained the integrity of acid-resistant steel chimneys in China for 15 months, while ordinary carbon steel chimneys remained intact for 18 months. It has been in operation abroad for 26 years with no issues.
Hehe, is the original poster selling real Savvy bricks or is it just a repost? Do Bin Gode have bricks for construction? I really haven’t heard of that. The second price is not very accurate; it’s a bit outdated. The third construction time depends on the size of the chimney and the experience and proficiency of the construction team. Fourthly, coatings have a relatively unreliable service life. As for adhesive-based materials, the consideration given to them is somewhat one-sided; we need to take into account not only the quality differences among different manufacturers but also issues related to the installation process. To the best of my knowledge, power plants that use Pinguo De or vitrified ceramic tiles do not encounter problems for at least over 2 years.
Is someone making bricks upstairs? Bingode and ceramic vitrified tiles also leak.
Even titanium plates can leak. No matter how good a material is, it won’t work without proper design solutions and effective construction management and control. But we can’t deny the feasibility of those design solutions – after all, there’s evidence of their effectiveness in preventing leaks over periods of more than 2 years
The current situation in China is that no materials are free from problems; it’s just a matter of how many problems arise and over what period of time. Relatively speaking, BinGaode has fewer problems. Other domestic manufacturers seem to believe that only the Chinese-style desulfurization method (which offers high profits and requires significant public relations efforts) can secure a market. When problems do occur, it is the owners who end up dealing with the consequences
After numerous evaluations and comparisons by experts, as well as practical testing, the performance of chimneys equipped with anti-corrosion measures for various products has become apparent – some cases were successful, while others saw issues such as peeling and leakage. Further investigation and research revealed that the main reason for these problems was the fact that during construction, the anti-corrosion treatment on the inner walls of the chimneys was carried out manually; thus, the skill levels and methods used in construction had a significant impact on the effectiveness of the anti-corrosion measures. When selecting a construction company, it is essential to choose one that possesses professional qualifications in anti-corrosion work as well as expertise in working at heights.