That marine enthusiast has a plan for acid cleaning the compressor oil system
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That SeaFriend has a plan for acid cleaning of the compressor oil system; please send it over, so I can learn from it*:handshake
General formula and method for chemical pickling of oil pipes 1. The general methods for circulating acid cleaning of oil pipelines are as follows: 1) The proportions of the various solutions used for circulating flushing are as follows: for the alkali cleaning solution, it consists of 0.8% sodium hydroxide and 0.2% trisodium phosphate ； Pickling solution: 4–5% industrial hydrochloric acid with 0.2%–0.3% of the corrosion inhibitor n-butyl acrylate added ； Passivation solution: a 2–3% sodium nitrite solution, to which industrial ammonia is added to adjust the pH of the solution to the range of 9–11. 2) A heating cycle is used; generally, the solution temperature during alkali washing is 80–90°C, with the cycle lasting 4–6 hours ； During pickling, the solution temperature is 50°C, and the process lasts for 6 to 8 hours. 3) Before and after each process of alkali washing, acid washing, and passivation, the pipes should be rinsed with deionized water or softened water at 40°C until the requirements of each process are met. 4) The circulating flow rate can be set at 0.1 meters per second. 2. The method for static soaking acid cleaning of oil pipelines is as follows: 1) The acid solution used for static soaking should be prepared by mixing 10% hydrochloric acid with 0.2% of the corrosion inhibitor n-butyl acrylate. Soaking generally takes more than 4 hours; alkali washing should be carried out before soaking, using the same proportions and duration as before. 2) The oil pipes after acid immersion should be rinsed with clean water before being placed in a passivation solution tank for passivation. The passivation solution is a sodium nitrite solution with a pH value of 9.5–10, and the passivation time is generally more than 3 hours. 3) After passivation, the pipes must be rinsed thoroughly with clean water, then dried with compressed air and sealed
Isn’t pickling too troublesome? Just use carbon tetrachloride to clean it.
Isn’t pickling too troublesome? Just use carbon tetrachloride to clean it.
Isn’t pickling too troublesome? Just use carbon tetrachloride to clean it.
Could a friend provide you with your plan? ? So that sailors can learn and communicate!
CCL4? How is this approach? |