Clean various heat exchangers, condensers, industrial pipelines, boilers, and steam power equipment condensers — GlanChem's cooperation is guaranteed.
Jining Grean Chemical Technology Co., Ltd. (简称 Jining Grean Cleaning Co.) was established in 2010 and specializes in cleaning various industrial heat exchange equipment. The company boasts comprehensive business philosophy and the capability to research and develop industrial cleaning technologies. We undertake cleaning services for industrial, private enterprise, corporate chemical equipment, power plant equipment, condensers, boilers, and economizers. We also handle air conditioning cleaning, heat exchange equipment cleaning, and mechanical and chemical equipment cleaning. Additionally, we provide cleaning and scaling removal for refrigeration and heating equipment.
Jining Grean Cleaning Co. has dozens of cleaning machines in various models ranging from 10mpa to 250mpa, as well as over a dozen chemical cleaning pump stations. Our main services are to power plants, chemical factories, oil mills, food factories, corporate entities, and heating equipment, etc. The company also provides long-term industrial heat exchanger cleaning and solution design services 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 to achieve standardized and standardized cleaning of heat exchange equipment.
Chemical descaling process:
Recirculating Closed Loop Cleaning
Recirculating cleaning utilizes two existing parallel deslagging pipelines to form a loop, creating a recirculation system with the cleaning pump station. A solution of a certain concentration is added, which circulates through the sludge water pipes for cleaning. As the acid washing decreases to a certain extent, the acid solution is continuously replenished. For short-distance single sludge water pipelines, if conditions permit, a temporary pipeline can be laid to form a recirculation loop for cleaning. This process must be carried out while the system is shut down, and it is complex and costly.
Open road cleaning
During cleaning, two grey pipes cannot form a loop; only single grey pipe open-circuit cleaning is allowed. The method involves connecting one end of the grey pipe to the cleaning unit, continuously preparing a specific concentration of cleaning solution in the solution tank, and injecting it into the grey pipe continuously or intermittently. This process requires the addition of cleaning equipment during shutdown, resulting in higher costs.
Non-stop cleaning
The process involves continuously injecting a specific amount of acidic solution while also adding a certain quantity of ash conveyor running cleaning inhibitor and pipeline descaling agent. This is an open-circuit cleaning method. The main function of the cleaning additive is to promote the reaction between the acidic solution and the ash deposits at a certain concentration and flow rate, while also increasing its solubility in water and reducing the formation of air blockages, ensuring the quality of ash pipeline cleaning.
The procedure is as follows: Prior to 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 descaling agent and pipeline cleaning agent by considering the sludge water flow rate and acidity. During cleaning, take a sample at the front end of the sludge pipe every 30 minutes to test the acidity, and strictly control the acidity by adjusting the acid flow rate. In the later stages of cleaning, test the pH value at the end of the sludge pipe every 15 minutes. When the pH value reaches a certain level and remains unchanged for 30 minutes, the cleaning can be deemed complete.
2. High-pressure water jet cleaning equipment
High-pressure water jet cleaning offers advantages such as high efficiency, low cost, non-damaging to workpieces, environmental friendliness, ease of operation, and safety.
High-pressure water technology boasts the following advantages.
(1) Excellent Cleaning Quality: High-pressure water jet cleaning of pipe and heat exchanger bores can completely remove scale and obstructions inside, revealing the metal substrate. With immense energy and moving at supersonic speeds, the high-pressure water jet is capable of completely destroying tough scale and obstructions without causing any damage to the metal.
Since the pressure of high-pressure water is less than the compressive strength grade of metal, high-pressure cleaning will not damage the base material being cleaned.
(2) Fast Cleaning Speed: Due to the combined crushing effects of water jet scouring, splitting, shearing, and grinding, scale can be quickly broken and removed, making the cleaning process several to ten times faster than traditional chemical methods, sandblasting, ball-shot peening, simple mechanical, and manual methods.
Components cleaned with high-pressure water jet do not require secondary cleaning; however, after chemical cleaning, the surface chemicals must be rinsed off with clean water.
(3) No Environmental Pollution: As high-pressure water jet cleaning uses pure water as the medium, it does not generate a large amount of dust like sandblasting, shot blasting, or simple mechanical cleaning, thus not polluting the atmosphere and harming health. Nor does it produce a significant amount of waste liquid like some chemical cleaning methods, which can contaminate rivers, soil, and water quality. The water jet cleaning with pure water as the medium is odorless, tasteless, and non-toxic. After atomizing the jet, it can also reduce the dust concentration in the working area, lowering atmospheric dust from 80mg/m³ with other methods to below the national safety standards. Therefore, it does not cause any pollution.
Pipe Scale
(1) Classified by chemical composition, they can be categorized into carbonate scale, sulfate scale, silicate scale, and mixed scale. The main components of carbonate scale are calcium carbonate and magnesium carbonate; the main components of sulfate scale and silicate scale are calcium sulfate and silicate compounds, respectively.
(2) Classified by physical properties, there are two types: scale that is firmly adhered to the pot shell and pipe walls, and sediment that is loosely textured and easily detached.
Lime scale primarily forms due to the salts like calcium and magnesium in the boiler feed water, which precipitate and adhere to the metal surface upon heating. Lime scale has a very low thermal conductivity, approximately 2 to 5 times less than that of ordinary steel. When lime scale accumulates on the boiler's heating surface, it severely impairs heat transfer efficiency and affects the boiler's performance; it can also lead to the deterioration of metal materials due to localized overheating, potentially causing pipe burst accidents; it accelerates galvanic corrosion, leading to pipeline lime scale corrosion and hastening the damage to the heating surface. Once lime scale forms, it should be promptly removed using mechanical or chemical methods.
Heat Exchanger and Refrigeration Equipment Cleaning – Choose GreenChem for Reliability
