详情描述
Clean various heat exchangers, condensers, industrial pipelines, boilers, and steam power plant turbine condensers. Glan Chemical Co. offers guaranteed cooperation.
Jining Greentech Chemical Technology Co., Ltd. (简称 Jining Greentech 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 philosophy and the capability to develop industrial equipment cleaning technologies, undertaking cleaning services for industrial, private enterprises, corporate chemical equipment, power station equipment, power plant condensers, boilers, and economizers. We also offer air conditioning cleaning, heat exchange equipment cleaning, and cleaning services for machinery and chemical equipment. Additionally, we handle cleaning of refrigeration and heating equipment for scale removal.
Jining Green Clean Company stocks dozens of cleaning machines with various models ranging from 10mpa to 250mpa, and over a dozen chemical cleaning pump stations. We primarily serve enterprises such as power plants, chemical factories, oil refineries, food processing plants, institutions, heating equipment, and more. The company also offers long-term industrial heat exchanger cleaning and design services to clients in the industry.
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 existing parallel ash piping lines to form a loop, which, together with the cleaning pump station, creates a recirculation system. A solution of a certain acidity concentration is added, and it circulates through the ash water pipes for cleaning. As the acid washing reaches a certain level, the solution is continuously replenished with acid. For short-distance single ash water pipes, 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 is complex, with higher costs.
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 additional cleaning equipment during shutdown, which increases costs.
Continuous Operation Cleaning
The process involves continuously injecting a certain amount of acidic solution while the ash pipe is operating normally and not stopped, simultaneously introducing a specific quantity of ash-pipe running cleaning inhibitor and pipeline descaling agent. This is an open-circuit cleaning method. The primary 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, reducing the occurrence of air blockages, and ensuring the quality of ash-pipe cleaning.
The procedure is as follows: 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 descaling agent and pipeline cleaner by considering the sludge water flow and acidity. During the cleaning process, collect a sample at the front of the sludge pipe every 30 minutes to test the acidity and strictly control it by adjusting the acid flow rate. In the later stages of cleaning, collect a sample 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 jet cleaning equipment
High-pressure water jet cleaning offers high efficiency, low costs, non-damaging to workpieces, environmental friendliness, ease of operation, and safety benefits.
High-pressure water technology offers the following advantages.
(1) Excellent Cleaning Quality: The high-pressure water jet cleaning of pipes and the internal holes of heat exchangers can completely remove scale and blockages from inside the pipes, revealing the metal surface. With its immense energy and ultra-sonic speed, the high-pressure water jet is fully capable of destroying hard scale and blockages without causing any damage to the metal.
Due to the pressure of high-pressure water being less than the compressive strength grade of metal, high-pressure cleaning will not damage the substrate being cleaned.
(2) Rapid Cleaning Speed: Due to the combined abrasive actions of water jet flushing, wedging, shearing, and grinding, scale can be quickly broken and removed, making the cleaning speed several to tens of times faster than traditional chemical methods, sandblasting and shot peening techniques, simple mechanical, and manual methods.
Additionally, parts cleaned with high-pressure water jetting do not require secondary cleaning; however, after chemical cleaning, the surface chemical 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, which can pollute the air and harm health. It also does not produce a large amount of waste liquid like some chemical cleaning methods, which can contaminate rivers, soil, and water quality. The water jet cleaning with pure water 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) Categorically classified 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 of calcium and magnesium in the boiler feed water that precipitate and adhere to the metal surface upon heating. Lime scale has a very low thermal conductivity, approximately 2 to 5 times that of ordinary steel. When lime scale accumulates on the boiler's heating surface, it severely degrades heat transfer efficiency, affecting the boiler's performance; it can also easily cause metal materials to burn due to localized overheating, potentially leading to 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 GreenChem for Assurance
