Coking plant equipment cleaning in Zichuan, Zibo, Shandong

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 cleaning various industrial heat exchange equipment. The company has comprehensive business philosophy and the capability to develop industrial equipment cleaning technology, undertaking cleaning services for industrial, private enterprise, corporate chemical equipment, power plant equipment, condensers in power plants, boilers, and boiler air preheaters; as well as air conditioning cleaning, heat exchange equipment cleaning, and mechanical and chemical equipment cleaning. We also take on the cleaning of refrigeration and heating equipment for scale removal.

Jining Green Clean Company stocks dozens of cleaning machines ranging from 10mpa to 250mpa, and over a dozen chemical cleaning pump stations. Our primary services are to power plants, chemical factories, oil mills, food factories, enterprises and institutions, as well as heating equipment. The company also provides long-term industrial heat exchanger cleaning and design solutions for industry clients.

Our company has recently acquired domestic cleaning machines and imported cleaning equipment. We have hired experienced technical specialists in the cleaning industry, which has standardized and normalized the cleaning of heat exchange equipment.

Chemical descaling cleaning 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 acidity concentration is added, which circulates through the sludge water pipeline for cleaning. Additionally, as the acid cleaning decreases to a certain level, the solution is continuously replenished with acid. 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 during shutdown and is complex and costly.
Coking plant equipment cleaning in Zichuan, Zibo, Shandong

Open Road Cleaning

No two ash pipes should form a loop during cleaning; only a single ash pipe should be used for open-loop cleaning. The method involves connecting one end of the ash pipe to the cleaning unit, continuously preparing a specific concentration of cleaning solution in the dosing tank, and then injecting it into the ash pipe continuously or intermittently. This process requires adding cleaning equipment during shutdown, which increases costs.

Continuous operation cleaning

This process involves continuously injecting a certain amount of acidic solution while operating, without interrupting the normal ash transportation in the ash pipe. Simultaneously, a specific quantity of ash-pipe-running cleaning inhibitor and pipeline descaling agent is added for open-circuit cleaning. The primary function of the cleaning additive is to promote the reaction between the acidic solution and 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 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 sludge pipe operation by considering the flow rate of the gray water and the acidity. During cleaning, collect samples at the sampling point at the front end of the sludge pipe every 30 minutes to test the acidity and strictly control it by adjusting the flow rate of acid addition. 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.
Coking plant equipment cleaning in Zichuan, Zibo, Shandong

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 - The high-pressure water jet cleaning of pipeline and heat exchanger bores can thoroughly remove scale and blockages inside, revealing the metal substrate. 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.

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.
Coking plant equipment cleaning in Zichuan, Zibo, Shandong

(2) Fast Cleaning Speed: Due to the combined effects of jet washing, wedge 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, simple mechanical, and manual methods.

Components cleaned with high-pressure water jetting do not require secondary cleaning; however, after chemical cleaning, the surface needs to be rinsed with clean water.
Coking plant equipment cleaning in Zibo, Shandong, China

(3) No Environmental Pollution: Since high-pressure water jet cleaning uses pure water as the medium, it does not produce 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 generate a significant amount of waste liquid like some chemical cleaning methods, which can contaminate rivers, soil, and water quality. The water jet cleaning using 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 using other methods to below the national safety standards, thus causing no pollution.

Pipe Scale

(1) Categorized by chemical composition, they include carbonate scale, sulfate scale, silicate scale, and mixed scale. The main components of carbonate scale are calcium carbonate and magnesium carbonate; the primary components of sulfate and silicate scales are calcium sulfate and silicate compounds, respectively. Mixed scale is usually a mixture of the above three types.
Coking plant equipment cleaning in Zichuan, Zibo, Shandong

(2) Categorized by physical properties, there are two types: scale that is firmly adhered to the pot shell and tube walls, and sediment that is loosely textured and easily detachable.
Lime scale primarily forms due to the salts of calcium and magnesium in the boiler feed water precipitating and adhering to the metal surface upon heating. The thermal conductivity of lime scale is very low, around 2 to 5 times that of ordinary steel. Lime scale on the boiler heating surface greatly deteriorates heat transfer efficiency and affects the boiler's performance; it can easily cause metal materials to burn due to localized overheating, potentially leading to pipe explosion accidents; it also accelerates galvanic corrosion, causing pipeline lime scale corrosion and speeding up the damage to the heating surface. Once lime scale forms, it should be removed promptly using mechanical or chemical methods.

Heat exchanger and refrigeration equipment cleaning, choose Greentech Chemicals for reliability.