详情描述
Clean various heat exchangers, condensers, industrial pipelines, boilers, and steam power plant equipment condensers - Grange Chemical Co. guarantees collaboration.
Jining GreenChem Technology Co., Ltd. (简称 Jining GreenChem Cleaning Co.) was established in 2010 and is a specialized company in cleaning various industrial heat exchangers. The company has comprehensive business concepts and the capability to research and develop industrial cleaning technologies. It undertakes cleaning services for industrial, private enterprise, and corporate chemical equipment, power station equipment, power plant condensers, boilers, boiler air preheaters; as well as air conditioning and heat exchanger cleaning. Additionally, it handles the cleaning and descaling of refrigeration and heating equipment.
Jining Green Clean Company stocks dozens of cleaning machines in various models ranging from 10MPa to 250MPa, as well as over a dozen chemical cleaning pump stations. Our primary services include power plants, chemical factories, oil refineries, food processing plants, corporate entities, and heating equipment. Additionally, the company provides long-term industrial heat exchanger cleaning and design solutions for clients in the industry.
Our company has recently purchased domestic cleaning machines and imported cleaning equipment. We have hired experienced technical specialists in the cleaning industry, enabling the cleaning of heat exchange equipment to be standardized and standardized.
Chemical Cleaning Scale Removal Process
Recirculating Closed Loop Cleaning
Recirculation cleaning utilizes two existing parallel deslagging pipelines to form a loop with the cleaning pump station, adding a certain concentration of acidic solution, which circulates through the slurry pipes for cleaning. As the acid cleaning reaches a certain level, more acid solution is continuously added. For short-distance single slurry 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.
Breakthrough Cleaning
No two ash pipes can 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 specific concentration of cleaning solution in the mixing tank, and then continuously or intermittently injecting it into the ash pipe. This process requires additional cleaning equipment during shutdown, resulting in higher costs.
Continuous cleaning without shutdown
This process involves continuously injecting a specific amount of acidic fluid while simultaneously introducing a certain quantity of cleaning inhibitor for the conveying pipe and a pipeline cleaning descaler for open-loop cleaning. The primary function of the cleaning aids is to promote the reaction between the acidic fluid and the ash scale within a certain concentration and flow rate, while also enhancing its solubility in water, reducing the formation of air blockages, and 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 of the sludge pipeline's cleaning inhibitor and pipeline stripping agent based on the grey water flow rate 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 can be considered complete.
2. High-pressure water jet cleaning equipment
High-pressure water jet cleaning is efficient, cost-effective, non-damaging to workpieces, environmentally friendly, easy to operate, and safe.
High-pressure water technology boasts the following advantages.
(1) Excellent cleaning quality: The high-pressure water jet cleaning of pipeline and heat exchanger bores can completely remove scaling and blockages from inside the pipes, revealing the metal itself. With its immense energy and ultra-sonic speed, the high-pressure water jet is fully capable of destroying hard scaling and blockages without causing any damage to the metal.
High-pressure water cleaning will not damage the surface being cleaned, as the pressure is less than the tensile strength grade of the metal.
(2) Fast Cleaning Speed: Due to the combined action of jet washing, wedging, shearing, and grinding, scale can be quickly broken and removed, making the cleaning process several to ten times faster than traditional chemical methods, sandblasting, 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: 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.
3. 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; mixed scale is usually a mixture of the above three types of scales.
(2) Categorized by physical properties, there are two types: a hard scale that firmly adheres to the pot shell and tube walls, and a loose sediment that is easy to detach.
Scale primarily forms due to the salts like calcium and magnesium in the boiler feedwater, which precipitate and adhere to the metal surface upon heating. The thermal conductivity of scale is very low, approximately 2 to 5 times that of ordinary steel. Scale on the boiler's heating surface significantly worsens the heat transfer efficiency, affecting the boiler's performance; it can easily cause metal materials to burn due to localized 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 GreenChem for reliability.
