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 specializes 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 of power plants, boilers, and economizers. We also provide air conditioning cleaning, heat exchange equipment cleaning, and accept cleaning orders for machinery and chemical equipment. Additionally, we handle cleaning of refrigeration and heating equipment for scale removal.
Jining Grean Cleaning Company stocks dozens of cleaning machines ranging from 10mpa to 250mpa, as well as over a dozen chemical cleaning pump stations. Our primary services include power plants, chemical factories, oil mills, food factories, corporate entities, and heating equipment. The company also provides long-term industrial heat exchanger cleaning and design solutions for clients in the industry.
Our company has recently acquired domestic cleaning machines and imported cleaning equipment. We have hired experienced technical specialists in the cleaning industry, which has enabled the cleaning of heat exchange equipment to be standardized and standardized.
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Chemical Cleaning Scale Removal Process
Recirculating closed-loop cleaning
Recirculation cleaning utilizes two original parallel deslagging pipelines to form a loop with the cleaning pump station, introducing a certain concentration of acidic solution that circulates and washes within the sludge water pipeline. As the acid cleaning decreases to a certain level, the solution is continuously replenished. For short-distance single sludge water pipelines, if conditions permit, a temporary pipeline can be installed to create a recirculation loop for cleaning. This process must be carried out during shutdown, is complex, and has higher costs.
Open path cleaning
No two ash pipes should form a loop during cleaning; only single-pipe open circuit cleaning is allowed. The method involves connecting one end of the ash pipe to the cleaning unit, continuously preparing a certain concentration of cleaning solution in the mixing tank, and then continuously or intermittently injecting it into the ash pipe. This process requires adding 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 without interruption, simultaneously adding a specific quantity of ash-pipe running cleaning inhibitor and pipeline descaling agent. This is an open-circuit cleaning method. The primary role 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 enhancing its solubility in water, reducing airlock formation, and ensuring the quality of ash pipe cleaning.
Operation method: Prior to cleaning, estimate the required acid quantity based on the total scale in the pipeline, then calculate the acid addition rate and sludge pipe flow rate for the addition of cleaning and corrosion inhibitor. During cleaning, take samples at the front of the sludge pipe at 30-minute intervals to test the acid concentration, and strictly control it by adjusting the acid flow rate. In the later stages of cleaning, take 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.
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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.
Advantages of high-pressure water technology include:
(1) Excellent Cleaning Quality: High-pressure water jet cleaning of pipeline and heat exchanger bores can thoroughly remove scale and blockages from inside the tubes, revealing the metal surface. The high-pressure water jet, with its immense energy and supersonic speed, is fully capable of destroying hard scale and blockages without causing any damage to the metal.
High-pressure water cleaning will not damage the base material being cleaned, as the pressure is less than the compressive strength grade of the metal.
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(2) Fast Cleaning Speed - Due to the combined effects of jet washing, splitting, shearing, and abrasive cutting from the water jet, scaling can be quickly broken and removed, making the cleaning process several to ten times faster than traditional chemical methods, sandblasting, ball-blasting, simple mechanical, and manual methods.
Components cleaned with high-pressure water jetting do not require secondary cleaning; however, after chemical cleaning, the surface chemicals must be rinsed off with clear water.
(3) No Environmental Pollution: As high-pressure water jet cleaning uses pure water as the medium, it does not produce large amounts of dust like sandblasting or simple mechanical cleaning, which can pollute the atmosphere and harm health. Nor does it generate large quantities 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, the ejected jet can also reduce the dust concentration in the working area, lowering atmospheric dust from 80mg/m³ using other methods to below the national safety standards, thus causing no pollution.
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3. Pipe Scale
(1) Classified by chemical composition, it includes 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; mixed scale is often a mixture of the three types.
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(2) Categorically divided 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.
Scale primarily forms due to the salts like calcium and magnesium in the boiler feed water precipitating and adhering to the metal surface upon heating. The thermal conductivity of scale is very low, about 2 to 5 times that of ordinary steel. Scale on the boiler heating surface significantly worsens heat transfer efficiency, affecting the boiler's performance; it can easily cause metal materials to burn due to local overheating, even leading to pipe explosion accidents; it also accelerates galvanic corrosion, causing pipeline scale corrosion and speeding up the damage to the heating surface. Once scale forms, it should be promptly removed using mechanical or chemical methods.
Heat exchanger and refrigeration equipment cleaning, choose Greentech Chemicals for reliability.
