Exploring repair methods for glass-lined reactors after corrosion
Thread Content
The 15M3 glass-lined tank has corroded to the metal layer; the area affected by corrosion is relatively large, around 10 CM2. How should it be repaired? (The medium used inside the tank is around 100 degrees Celsius and is corrosive.) Generally, the repair of the glass-lined layer is done by the manufacturer, who carries out the repairs directly; however, it’s quite difficult to handle tanks of 15 cubic meters, so it’s more convenient to carry out the repairs oneself. Does anyone have experience in repairing corroded glass-lined reactors? I would appreciate any advice you can offer. After some consideration, I decided to first weld metal sheets together to fill the large holes, then grind the areas where the metal was repaired as well as the surrounding edges, and apply anti-corrosion UC coating. Surface anti-corrosion UC can provide corrosion protection; it can also fill gaps in the metal and prevent leaks at the welds. Please share your valuable opinions!
This method is not the best; it is possible to carry out repairs using glass-lined material, which is already widely used and available for purchase from specialized manufacturers. The repairs can then be carried out according to the accompanying instructions, or by hiring professional corrosion control teams； First, the corroded metal parts are treated on the surface; impurities are carefully removed to expose the underlying metal. Then, a glass repair material is prepared, and the repair is carried out under specified conditions and within a set time frame.
A simple solution… For situations where the temperature ranges from 30 to 160 degrees, enamel repair can be used. Taking thermal expansion into account, \"Plastic Steel King\" – a lesser-known brand – was chosen; it turned out to be both wear-resistant and resistant to thermal expansion after the compressor was repaired. The surface is polished clean, then a layer of this product is applied according to the instructions. After waiting 2–3 days, the surface is polished smooth again. Remember, products like \"Plastic Steel King\" have performed well under these conditions over the past 2 years (for flange sealing). It should also be noted that the owner of this product refused to disclose its exact composition, stating only that its thermal expansion properties are similar to those of iron, and that it is resistant to hydrochloric acid and toluene. :L
The technology of repairing glass-lined equipment using oxygen-acetylene flame spraying of ceramic powder and Bufuning enamel repair agent: Oxygen-acetylene flame spraying of ceramic powder and Bufuning enamel repair agent (formerly known as ZH enamel equipment repair agent) represents a proprietary on-site partial repair technique for glass-lined equipment developed by Shijiazhuang Zhenhua Enamel Repair Co., Ltd. Each of these two technologies has its strengths and weaknesses, and by combining them, the needs can basically be met. In 2004, these two glass lining repair techniques were recognized and approved by experts in glass lining equipment as well as the relevant technical organizations. 1. Technology for repairing linered equipment using oxygen-acetylene flame spraying of ceramic powder. This technology, developed over 23 years by Shijiazhuang Zhenhua Enameled Equipment Repair Co., Ltd., is suitable for repairing equipment in general medium environments and on large-scale equipment. It has been used to successfully repair thousands of pieces of equipment for thousands of customers; among the known cases, there are 8,000 liters of linered equipment that have been repaired using this method and are still in use after 7.5 years at 120°C. 2. Gebofuning Enamel Repair Agent – Technology for repairing enamel-lined equipment. The Gebofuning Enamel Repair Agent (formerly known as ZH Enameled Equipment Repair Agent) is a specialized repair agent for enamel-lined equipment developed by Shijiazhuang Zhenhua Enamel Repair Co., Ltd. This agent is suitable for use on equipment with small areas of damage, in environments with strong oxidizing agents, strong solvents, or high temperatures; it is particularly appropriate for users who wish to purchase the material to carry out repairs on their own. In May 2004, the Quality Supervision and Inspection Center for Non-metallic Materials and Equipment in the chemical industry conducted a comprehensive test of the physical and chemical properties of the Bufening enamel repair agent. It was found that all the properties of this agent met the requirements of current standards; its application process is simple and easy to master. The reliability and service life of equipment repaired with this agent are superior to those of similar materials available domestically and internationally, making it an ideal material for repairing enamel-coated equipment in China at present.