Filter

Liquid ammonia oil and water removal filter

In industrial fields such as chemical engineering, power denitrification, and refrigeration that rely on liquid ammonia as a medium or raw material, the oil content, moisture, and solid impurities in liquid ammonia are the core hidden dangers that threaten the safe and stable operation of the system. Trace oil-water impurities can easily cause pipeline blockage, valve jamming, flowmeter failure, and even serious problems such as equipment corrosion and catalyst poisoning, significantly increasing operation and maintenance costs and safety risks. As a targeted solution, the liquid ammonia oil-water removal filter, with precise separation technology and reliable structural design, has become a key equipment to safeguard the purity of the liquid ammonia system, laying a solid safety line for the efficient promotion of industrial production.

Core technology: precise separation, efficient purification

The filter adopts patented multi-layer composite filtration and coalescence separation collaborative technology, breaking through the limitations of passive separation in traditional filtration equipment and achieving active and deep removal of oil-water impurities. The core filter adopts a three-layer nine step composite fiber structure design, which sequentially constructs a mechanical interception layer, a selective adsorption layer, and a firmly locked layer from the outside to the inside, forming a full chain purification system:

-Mechanical interception layer: The filter is made of polyester film combined with polyethylene film, with high porosity and excellent breathability. It can efficiently filter out solid particle impurities above 5 μ m, with a filtration efficiency of over 99.5%, laying the foundation for subsequent oil-water separation;

-Selective adsorption layer: The filter adopts a polysulfone membrane composite polyamide membrane material, which actively captures oil particles dispersed in liquid ammonia through intermolecular forces similar to extraction. The loose and porous structure can adapt to the separation needs of different types of oil particles;

-Secure locking layer: The filter uses an oleophilic polytetrafluoroethylene composite membrane, which can firmly lock the adsorbed oil particles between the fiber pores. Even under fluctuations in working pressure, oil particles will not escape, ensuring a long-lasting and stable oil removal effect.

Some high-end models integrate centrifugal active separation modules, which drive the filter element to rotate through a built-in separation motor, using centrifugal force to accelerate the stratification of liquid ammonia and oil-water impurities, further improving separation efficiency, while significantly reducing the initial resistance of the equipment (initial resistance<3%), ensuring stable system flow, and extending the ammonia discharge time by 10-20 minutes under the same operating conditions.

Product advantages: Safe and reliable, convenient operation and maintenance

1. Corrosion resistant material, safe and free of secondary pollution: The filter body is made of 304 or 316L stainless steel material, and the filter element is made of liquid ammonia specific corrosion-resistant composite fiber. It has stable performance in the working temperature range of -40 ℃ to 50 ℃ and working pressure of 0.6-1.6MPa, does not react with liquid ammonia, and eliminates the risk of secondary pollution;

2. Structural optimization, easy installation and maintenance: The filter adopts a low inlet and high outlet flow channel design, equipped with bypass pipelines, ammonia specific valves, and nitrogen replacement ports, which can achieve non-stop drainage and filter element replacement, greatly reducing maintenance time; Pressure gauges are installed for import and export, which can monitor changes in pressure difference in real time. When the pressure difference reaches 0.35MPa, timely maintenance reminders are provided to avoid system failures;

3. Customized adaptation with wide scene coverage: The filtration accuracy can be flexibly adjusted between 0.1 μ m and 5 μ m according to requirements, and the working flow rate can be adapted to different working conditions such as 30m ³/h-40m ³/h. It can be directly installed at key nodes such as the inlet of the liquid ammonia unloading arm, the outlet of the storage tank, or the front end of the ammonia evaporator in the denitrification system, without changing the original system layout. The mobile design can better meet the flexible application needs of multiple scenarios;

4. Reliable sealing and excellent safety level: The filter adopts a mortise and tenon flange sealing design, combined with a safety valve and sewage linkage system, to ensure that the equipment has no leakage; The entire process complies with the safety standards of the ammonia zone, and after rigorous testing and nitrogen replacement verification, it is put into use, ensuring operational safety from structural design to operation in all aspects.

Technical Specifications

Applicable scenarios

Filters are widely used in SCR denitrification systems in the power industry, chemical synthesis ammonia production, liquid ammonia circulation in refrigeration systems, nitric acid production, and other fields. Their core functions include ensuring the normal operation of key equipment such as denitrification system valves and flow meters, and avoiding system shutdown due to blockage; The filter removes iron impurities and oil fractions from liquid ammonia, preventing platinum mesh catalyst poisoning in nitric acid production and improving catalytic efficiency; Purifying the liquid ammonia medium in the refrigeration system to prevent lubricating oil from entering the evaporator and affecting heat transfer efficiency; Filters protect liquid ammonia pipelines and storage tanks, reducing corrosion losses and lowering maintenance costs.

core value

The liquid ammonia oil-water removal filter accurately removes oil, water, and solid impurities from liquid ammonia, solving core pain points such as blockage, corrosion, and equipment failure in industrial liquid ammonia systems from the source. It can not only improve the purity of liquid ammonia medium, ensure stable and efficient operation of downstream processes, but also significantly reduce equipment maintenance costs and unplanned shutdown losses, and extend the overall service life of the system. With customized adaptability, reliable safety performance, and convenient operation and maintenance design, it has become an essential equipment for fine management of industrial liquid ammonia systems, providing core support for enterprises to achieve safe production and efficient operation.

Our company

A well experienced team with more than 10 years experience in chemical and petroleum market. we can supply our customers high quality , timely delivered products to all requested destinations.Our goal is not only to sell our products but also to try to get our customers the best and most cost-effective choice, so that, maximizing the benefits of customers and proper consultation with them are considered a prominent operational strategy in our sales and marketing team .