详情描述
Clean various heat exchangers, condensers, industrial pipelines, boilers, and steam power plant condensers. Glan Chemical Co., Ltd. offers guaranteed cooperation.
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 boasts comprehensive business philosophy and the capability to research and develop industrial cleaning technologies. We undertake cleaning services for industrial, private enterprise, and corporate chemical equipment, power station equipment, condensers, boilers, and boiler air preheaters; as well as air conditioning and heat exchange equipment cleaning. We also handle cleaning and descaling of refrigeration and heating equipment.
Jining Grean Cleaning Co. has dozens of cleaning machines with various models ranging from 10mpa to 250mpa, and more than a dozen chemical cleaning pump stations. We primarily serve enterprises such as power plants, chemical factories, oil refineries, food processing plants, government institutions, and heating equipment. The company also offers 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 to achieve standardized and standardized cleaning of heat exchange equipment.
Chemical Cleaning Scale Removal Process
Recirculating Closed Loop Cleaning
Recirculating cleaning utilizes two original parallel ash removal pipelines to form a loop, creating a circulation system with the cleaning pump station. A solution of a certain concentration is added, and it circulates within the ash water pipes for cleaning. Additionally, acid is continuously replenished as the acid washing reaches a certain level. For short-distance single ash water pipelines, if conditions permit, a temporary pipeline can be laid to form a circulation loop for cleaning. This process must be carried out during shutdown, and it is complex and costly.
Pilot cleaning
No two gray pipes can form a loop during cleaning; only a single gray pipe can be used for open-circuit cleaning. The method involves connecting one end of the gray pipe to the cleaning unit, continuously preparing a certain concentration of cleaning solution in the fluid tank, and then continuously or intermittently injecting it into the gray pipe. This process requires adding cleaning equipment while the system is offline, which increases costs.
Continuous cleaning without shutdown
The process involves continuously injecting a certain amount of acidic solution while the ash pipe is operating normally without interruption, simultaneously adding a specific quantity of ash-pipe running cleaning inhibitor and pipeline descaling agent. This is an open-loop cleaning process. The main function of the cleaning aids is to promote the reaction between the acidic solution and the ash scale at a certain concentration and flow rate, while also increasing its solubility in water and reducing the occurrence of air blockages, ensuring the quality of ash pipe cleaning.
The procedure is as follows: Prior to cleaning, estimate the required acid quantity based on the total scale in the pipeline. Then, calculate the acid addition rate and the flow rate for the washing inhibitor and pipeline cleaner based on the sludge water flow and acidity. During cleaning, collect samples at the sampling point at the front 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 stage of cleaning, collect samples at the end of the sludge pipe every 15 minutes to test the pH value. When the pH value reaches a certain level and remains unchanged for 30 minutes, the cleaning process can be deemed complete.
2. High-pressure water cleaning equipment:
High-pressure water jetting is used for cleaning, offering advantages such as high efficiency, low cost, non-damaging to workpieces, non-polluting the environment, easy operation, and safety.
Advantages of high-pressure water technology include:
(1) Excellent Cleaning Quality - High-pressure water jet cleaning of pipe and heat exchanger bores can thoroughly remove all scaling and obstructions from within the pipes, revealing the metal surface. The high-pressure water jet, with its immense energy and supersonic speed, is fully capable of destroying tough scaling and obstructions without causing any damage to the metal.
High-pressure water cleaning will not damage the substrate being cleaned, as the pressure is less than the tensile strength grade of the metal.
(2) Rapid Cleaning Speed - Due to the combined actions of jet washing, wedging, shearing, and abrasive cutting, scale can be quickly broken and removed, making the cleaning process several to over a dozen times faster than traditional chemical methods, sandblasting, simple mechanical, and manual techniques.
Additionally, components cleaned with high-pressure water jetting do not require secondary cleaning; however, after chemical cleaning, the surface must be rinsed with clean water.
(3) No Environmental Pollution: Since 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, which can pollute the atmosphere and harm health. It also does not produce a large volume 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 atomization, it can also reduce the dust concentration in the work area, lowering atmospheric dust from 80mg/m³ with other methods to below the national safety standards, thus causing no pollution.
Pipe Scale
(1) Classified by chemical composition, they can be categorized into carbonate scale, sulfate scale, silicate scale, and mixed scale, etc. 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) Categorized by physical properties, there are two types: hard scale that firmly adheres to the pot shell and tube walls, and loose sediment that is easy to detach.
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 metal being damaged due to localized overheating, potentially causing pipe explosion accidents; it accelerates galvanic corrosion, causing pipeline lime scale corrosion, and speeds up the deterioration of the heating surface. Once lime scale forms, it should be promptly removed using mechanical or chemical methods.
Heat Exchanger and Refrigeration Equipment Cleaning - Choose Green Chemicals for Reliability
