Working Conditions for Dalian Chemical Pumps

Developed based on domestic professional chemical pump manufacturing technologies and tailored to special operating conditions in the chemical industry, Dalian Chemical Pumps feature corrosion resistance, explosion-proof & pressure-resistant performance, and wear-resistant sealing. Widely applicable to severe working conditions across the chemical sector, they serve as core equipment for medium transportation in petrochemical, fine chemical, fertilizer, pharmaceutical and other industries. Their primary applicable operating conditions are listed below:

1. Transportation of Highly Corrosive Media

Chemical production frequently involves highly corrosive media including sulfuric acid, hydrochloric acid, nitric acid and sodium hydroxide, which readily corrode conventional pumps. The wetted parts of Dalian Chemical Pumps are mostly made of corrosion-resistant materials such as fluoroplastic lining, duplex stainless steel and high-alloy cast iron. For instance, FSB fluoroplastic pumps can withstand sulfuric acid of 0–98% concentration, hydrochloric acid below 30% concentration, and various mixed organic acids and alkalis. They are suitable for dilute acid transportation in fertilizer plants, liquid neutralization processes in pharmaceutical factories, and acid & alkali chemical dosing in sewage treatment stations, preventing equipment failure and safety risks caused by medium leakage due to corrosion.

2. Flammable, Explosive and Toxic Media

Media such as benzene, methanol, ethylene and liquid ammonia used in petrochemical and fine chemical industries are flammable, explosive and often toxic, imposing strict requirements on explosion protection and sealing performance of transportation pumps. Dalian Chemical Pumps are fitted with explosion-proof motors and anti-static pipelines. Multiple sealing structures including mechanical seals and magnetic seals eliminate medium leakage. CQ magnetic pumps achieve zero leakage, applicable for gasoline and diesel transportation in refining units, organic solvent circulation in pesticide plants, and medium delivery for coal gasification processes. Compliant with explosion-proof safety standards, they prevent explosions and poisoning incidents.

3. High-temperature and High-pressure Operating Conditions

Certain chemical reactors such as polymerization kettles and synthesis towers operate at temperatures over 300°C and pressures of several megapascals, demanding high structural strength and thermal resistance for pumps. Equipped with thickened pressure-resistant casings, high-temperature resistant alloy wetted components and cooling & lubrication systems, Dalian Chemical Pumps steadily withstand high temperature and pressure. ZA chemical process pumps are applied to high-temperature slurry transportation in refineries, process medium circulation in synthetic ammonia plants, and hot alkali liquor delivery in soda ash production to ensure stable continuous operation.

4. Media Containing Solid Particles

Chemical processes often generate media suspended with solids such as phosphogypsum slurry, ore pulp and reaction residues, which easily cause pump abrasion and blockage. Optimized flow passage structures and wear-resistant alloys are adopted for Dalian Chemical Pumps, with enlarged flow channels to avoid clogging. PN slurry pumps are ideal for phosphogypsum transportation in phosphorus chemical industry, ore pulp delivery in hydrometallurgy, and solid-containing slurry transfer in dyestuff factories, lowering abrasive damage and extending service life.

In addition, Dalian Chemical Pumps accommodate special conditions including low temperature and high viscosity. Low-temperature chemical pumps deliver cryogenic liquids like liquid nitrogen and liquid oxygen at -196°C, while high-viscosity pumps transfer viscous materials such as resin and asphalt to meet diverse application requirements.

In summary, leveraging advantages in materials, structure and technology, Dalian Chemical Pumps are compatible with most severe chemical working conditions. Providing reliable medium transportation solutions, they are widely adopted core fluid equipment in China’s chemical industry. Versatile and dependable, they stand as preferred transportation equipment for numerous chemical enterprises.