On the issue of investment valuation for sulfuric acid plants
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I am working on a project at a chemical plant aimed at recycling sulfuric acid through the incineration of acidic wastewater and sulfur-containing waste gases. The design capacity is approximately 210,000 tons per year; the recycled sulfuric acid is mainly used in other equipment within the plant, thus enabling recycling. The device includes: air preheating and combustion, purification, conversion, and absorption. A rough estimate of the investment required for this device is needed now; those who are familiar with the market conditions are asked to offer some assistance. The main equipment includes the following: 1. Process air preheating system: this encompasses the air preheater (using natural gas as fuel, with a capacity of around 16 MW), steam preheaters, various fans, and an estimate for the entire system (it would be better if the costs could be broken down item by item). 2. Regeneration incinerator: Its size cannot be determined at present; the fuel used is fuel oil. If you are aware of the market situation or know any relevant manufacturers, please contact us via private message. 3. Estimation of the waste heat boiler: fire-tube type, approximately 35MW. 4. Valuation of fiberglass equipment. 5. Estimation of the electrostatic mist remover. 6. Estimation of towers lined with acid-resistant bricks, such as drying towers, primary absorption towers, and secondary absorption towers (it would be best if the prices of carbon steel towers and the acid-resistant brick linings could be provided separately). 7. Estimation of the nicotinic acid tower made of 304 stainless steel. 8. Estimation of various containers lined with acid-resistant bricks. 9. Valuation of Lewis pumps. 10. Estimation of anodically protected stainless steel heat exchangers. 11. Estimation of KK&K’s SO2 blowers (turbine-driven). 12. Estimation for the 304 stainless steel converter (four layers). 13. The price difference between C276 and 254SMO materials for equipment. 14. For pipelines used with concentrated acids, as far as I know, there are ZeCor from Monomax and Saramet from Kemidi, but their prices are relatively high. I wonder what materials are available in China for this purpose. What types of pipelines are used in China’s sulfuric acid industry for concentrated acid systems, and what are the actual performance results of those materials? Since the technology supplier has not yet been selected, some specific parameters cannot be determined yet. I just want to get a general idea; an exact price is not required. Friends interested in learning about market trends or personnel from relevant manufacturers are welcome to provide information. If you wish to gain a deeper understanding of our project, please contact us via private message; please do not post advertisements here. If you are a equipment supplier, please indicate the manufacturer’s name, address, and contact information when contacting via message.
I have supervised and been involved in the construction of several sulfuric acid production plants with capacities of 200,000 tons, 120,000 tons, and 100,000 tons; the cost is closely related to the process choices made. With blueprints, cost estimation is relatively close to the actual investment. 1. The cost of purifying fiberglass reinforced plastic equipment and pipes is calculated at 30-32 yuan/KG. 2. For custom-made items, the cost is estimated by dividing the labor and material costs in half. 3. Acid-resistant brick marker bricks cost 8 yuan each.
The last edit to this post was made by yunsanapo on 2012-12-13 at 19:11. In response to the question regarding the materials suitable for use in pipelines handling concentrated acids, one high-silicon stainless steel alloy that performs well in China is XDS-9 and XDS-10 produced by Xuanda. Abroad, another excellent material is Sandvik SX; its performance in withstanding high-temperature concentrated sulfuric acid is better than that of Zecor and Saramet 35
For acid-resistant bricks, fillers, and anti-corrosion solutions, turn to me – I work with large companies and well-known brands.
Is the poster the owner? It’s the owner who can contact me to talk: lol
We are the project owner, and we are carrying out the construction of a large-scale chemical project with a total investment of over 20 billion. This sulfuric acid plant is one of the supporting facilities; it burns and recycles acidic wastewater and sulfur-containing waste gases generated by various plants to produce sulfuric acid. It mainly produces 98% sulfuric acid and 104.5% nicotinic acid, while also preparing 100.4% sulfuric acid for use in other plants, thereby enabling recycling and meeting environmental protection requirements.
Do you know the prices of these several materials?
Germany also has a brand called 700Si, which is more corrosion-resistant than Sandvik SX, but it seems there are few distributors of it in China
This post was last edited by yunsanapo on 2012-12-14 09:07. I’m not quite sure about the current prices; I asked relevant people before, and XuanDa’s products are much cheaper, with prices around half of those of Zecor (as a side note, these two companies were once in court over patents, hehe). You can contact XuanDa’s sales staff directly
It’s a very complex project; the specific details and prices change over time, so it’s difficult to give a clear answer at the moment