Jining Green Chemical Technology Co., Ltd. (简称 Jining Green Cleaning Co.) was established in 2010 and is a professional company specializing in the cleaning of various industrial heat exchange equipment. The company has comprehensive business concepts and the capability to develop industrial equipment cleaning technologies, handling cleaning services for industrial, private enterprise, and corporate chemical equipment, power plant equipment, condensers, boilers, and economizers. We also offer air conditioning and heat exchange equipment cleaning, as well as mechanical and chemical equipment cleaning. Additionally, we undertake cleaning and descaling of refrigeration and heating equipment.
Jining Green Clean Company stocks dozens of cleaning machines ranging from 10mpa to 250mpa, and over a dozen chemical cleaning pump stations. Our primary services include power plants, chemical factories, oil refineries, food processing plants, corporate entities, heating equipment, and more. The company also provides long-term industrial heat exchanger cleaning and design solutions to industry clients.
Our company has newly acquired domestic cleaning machines and imported cleaning equipment. We have hired experienced technical specialists in the cleaning industry, which has standardized and regulated the cleaning of heat exchange equipment.
Stainless Steel Reactor Cleaning in Jining, Qufu, Shandong
Chemical Cleaning Scale Removal Process
Recirculating Closed-loop Cleaning
Recirculating cleaning utilizes two existing parallel ash removal pipelines to form a loop, creating a circulation system with the cleaning pump station. It introduces a solution of a certain acidity concentration, which circulates and cleans within the ash water pipes. As the acid cleaning decreases to a certain level, the solution is continuously replenished with acid. For short-distance single ash water pipelines, if conditions permit, a temporary pipeline can be laid to form a recirculation loop for cleaning. This process must be carried out during shutdown, is complex, and has a higher cost.
Stainless Steel Reactor Cleaning in Jining, Qufu, Shandong
Open-path Cleaning
No two grey pipes should form a loop during cleaning; only single grey pipe open-loop cleaning is allowed. The method involves connecting one end of the grey pipe to the cleaning unit and continuously preparing a specific concentration of cleaning solution in the mixing tank, which is then injected into the grey pipe continuously or intermittently. This process requires adding cleaning equipment while the system is shutdown, leading to higher costs.
Continuous cleaning without shutdown
The process involves continuously injecting a certain amount of acidic solution while the ash pipe is operating normally and continuously conveying ash. At the same time, a certain amount of ash-pipe operating cleaning inhibitor and pipeline descaling agent are added for open-circuit cleaning. The main function of the cleaning additive is to promote the reaction between the acidic solution and the ash scale at a certain concentration and flow rate, while increasing its solubility in water and reducing the generation of airlock, ensuring the quality of ash-pipe cleaning.
The procedure is: Before cleaning, first estimate the required acid amount based on the total scale in the pipeline. Then, calculate the acid addition rate and the flow rate of the sludge pipeline by considering the flow rate of the grey water and acidity. During cleaning, take samples at the sampling point at the front end of the sludge pipeline every 30 minutes to test the acidity and strictly control it by adjusting the flow rate of acid addition. In the later stage of cleaning, take samples at the end of the sludge pipeline every 15 minutes to test the pH value. When the pH value reaches a certain level and remains unchanged for 30 minutes, the cleaning can be considered complete.
Stainless Steel Reactor Cleaning in Jining, Qufu, Shandong
(2) Categorically divided by physical properties, there are two types: water scale that firmly adheres to the pot and pipe walls, and sediment that is loose and easily detached.
Lime scale primarily forms due to the salts, such as calcium and magnesium, present in the boiler feed water that precipitate and adhere to the metal surface upon heating. Lime scale has a very low thermal conductivity, about 2-5 times that of ordinary steel. When lime scale accumulates on the boiler's heat transfer surface, it severely impairs the heat transfer efficiency, affecting the boiler's performance; it also tends to burn the metal materials due to localized overheating, potentially leading to pipe bursting accidents; it accelerates galvanic corrosion, causing pipeline lime scale corrosion, and hastens the damage to the heat transfer surfaces. Once lime scale forms, it should be promptly removed using either mechanical or chemical methods.
Heat Exchanger & Refrigeration Equipment Cleaning - Choose GreenChem for Confidence
