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A Washable Porous Metal Hepa Filter

The concept of a washable metallic media HEPA filter has been proven by testing on a HLW simulation by the Savannah River Technology Center (SRTC). The proposed filter design has been tested at the Mott Corporation laboratory with stainless steel media and has proven that washable metallic media can function reliably. 

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Advances in Filtration Technology Using Sintered Metal Filters

Filtration technology utilizing sintered metal media provides excellent performance for separation of particulate matter from either liquid or gas process streams (i.e., liquid/solids and gas/solid separation) in numerous industrial liquid and gas filtration applications. Sintered metal filter media, fabricated from either metal fibers or metal powders into filtration elements, are widely used the in the chemical process, petrochemical and power generation industries. Applications require particulate removal to protect downstream equipment, for product separation, or to meet environmental regulations. 

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Aerospace Engine Soot Filter

Porous Cup Filters Soot from Aerospace Engine 

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Auto and Heavy Machinery Uses

Mott’s sintered porous metal products are used in many filtration and fluid control applications within the automotive and heavy equipment industry. Emission controls, engine life cycle and power, as well as accurate testing equipment are critical to engine designers and manufacturers. Mott products can also be used to capture unburned hydrocarbons, to protect critical sensors, and pressure sensing in diesel emissions equipment.

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Automotive and Heavy Machinery Using Porous Metal

Mott’s sintered porous metal products are used in many filtration and fluid control applications within the automotive and heavy equipment industry.

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Automotive Industry Porous Metal

Mott’s sintered porous metal products are used in many filtration and flow control applications within the automotive industry. Emission controls, engine life cycle and power, as well as accurate testing equipment are critical to automotive designers and manufacturers. 

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Biofermentation Spargers vs Drilled Pipe Whitepaper

Laboratory Test Report of Mott Spargers vs Drilled Pipe in typical Biofermentation Conditions.

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Biotech Sparger Guide

Guide to quick change biotechnology spargers.

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Breathing Equipment Flow Restrictors

Sintered Metal Flow Restrictors are incorporated into several types of breathing equipment that provide a critical gas flow control component design to help keep you safer and ‘breathing easier’. Airline Pilot Safety Oxygen Masks, SCUBA Diving Air Tank Regulators, Anesthesia Delivery Machines and Firefighter Air Packs are all examples of Breathing Equipment applications that depend on a Mott flow restrictor to deliver the precise amount of gas in critical situations. 

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Bulk Filter Guide

Guide for in-line bulk filtration.

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Catalyst Recovery from Continuous Flow Reactors with Mott HyPulse LSM

The Mott HyPulse® LSM filter recovers fine, suspended catalyst from continuous flow, stirred tank reactor (CSTR) systems with a single filter unit. By operating the LSM in a recirculating loop around the reactor, the catalyst is always kept at reaction conditions which minimizes activity loss due to depressurization and mechanical stress. The filter cake is controlled dynamically with the slurry recirculation rate, assisted by on-flow reverse backpulsing. The paper describes LSM filtration technology, gives operating characteristics based on pilot and full scale experiences, and lists selection criteria for this novel filter.

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Chemical Treatment Spargers pH

 Solution provided was a sparger sized based on the pH level, liquid flow rate, and the target time provided by the customer. 

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Chromatography Applications Using Porous Metal

Mott Corporation is the leading supplier of porous metal products for chromatography and analytical instrumentation with a wide range of column frits, inline filters, and gas flow restrictors.

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Design and Operation of Porous Metal Crossflow Microfilters

Porous metal crossflow (LSX) filters concentrate and clarify suspensions of particulate solids. The tubular filter media is a porous matrix of sinter-bonded metal powder with absolute retentions in the micron range. The strength of the media allows in-situ regeneration by hydraulic backpulsing. LSX filters have long service life, excellent filtration efficiency, and high solids concentrating capacity.

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Diffusers Reduce Vent Times

Mott GasShield® Diffusers are designed to maximize required flow while minimizing pressure drop, resulting in a uniform diffusion of gas that will not disturb particles in the chamber.

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Flow Control: A Novel Use for Porous Metal

Flow restrictors are static devices meaning there are no moving or adjustable components as one would find in dynamic flow control devices such as mass flow controllers or micro-metering valves. Precision porous metal flow restrictors are reliable, cost-effective alternative to other static flow control devices (like orifices and capillaries) and dynamic flow control devices. A porous metal flow restrictor is, in effect, a multiple orifice device with a myriad (usually 100’s) of small pores, thereby creating a vast array of flow pathways.

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Flow Restrictors for Analytical Instrumentation

With over 55 years experience working with leading manufacturers, Mott is the world expert in designing and manufacturing flow restrictors, flow orifices and flow plugs for analytical instrumentation.

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Flow Restrictors on Cassini-Huygens Spacecraft

 The Cassini journey has been kept on course by means of attitude jets which draw compressed hydrazine through flow controllers comprised of a unique material Mott porous metal.

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Food and Beverage Uses for Porous Metal

Porous metal is effectively used in many aspects of food and beverage processing including bulking and debulking, carbonation, filtration, floatation, venting, aeration, oil hydrogenation, fermentation, steam injection and oxygen stripping.

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Frits in Liquid Chromatography

Mott’s pressed and sintered porous metal frits are used in liquid chromatography columns to filter microbial and inorganic contaminants. These frits protect HPLC (high pressure/performance liquid chromatography) columns from particulate contamination and distribute dissolved samples evenly for optimal column performance. 

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Fuel Cells Using Porous Metal

It is an outstanding material for use in PEM and Solid Oxide fuel cells, electrolyzers, flow batteries, as well as other alternative energy related applications. Rugged and robust, porous metal can be used as a membrane or catalyst support, gas diffusion layer (GDL), water and/or gas filter / humidifier, or as a battery electrode.

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Gas Solids Separation Using Sintered Porous Metal Technology

Filtration systems utilizing sintered metal media have proven to be an effective and economical alternative to other separation equipment susceptible to pressure spikes, high temperatures, and aggressive environments. This includes bag houses, cyclones, electrostatic precipitators and scrubbers. Sintered metal media has demonstrated high efficiency particle removal, reliable filtration performance, effective blowback cleaning and long on-stream service life in many industrial applications utilizing calciners, incinerators and fluid bed dryers. Sintered metal media is well suited for dust removal and gas treatment, particularly where hot gasses and sparks are present. 

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Gas Spargers for Beverages

Sparger element for beverage blending and carbonation

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HiFlow Nickel Microfiltration Media for Gas and Liquid Filtration

This paper describes the properties and cross flow filtration test results of Hiflow Nickel media developed for microfiltration. Polymeric, ceramic and titania/zirconia coated stainless steel media are currently available with filtration ratings as low as 0.05 m and finer. The polymer membrane lack in strength, pressure and temperature capability and their disposal may be an environmental issue. The permeability of polymeric, ceramic and ceramic-coated stainless steel media is also limited. A high permeability metal media suitable for microfiltration has the advantages of high pressure and temperature capability, weldability, corrosion resistance and recyclability. The Hiflow Nickel media is available for cross flow and barrier filtration of liquids and gases.

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High Purity Defender Series News Brief

Defender POU filters offer the high strength, long life, and quality inherent in Mott's all-metal construction – which provides true 9- log filtration - But it has exceptionally low delta-P in this all-metal design. 

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High Purity Diffuser News Brief

All-metal Mott diffusers are high-performance alternatives to drilled plate showerheads and/or standard 1/4" open-ended inlet lines. By eliminating the adverse “jet” effect that plagues other methods, Mott diffusers can substantially reduce vent times of load lock or vacuum process chambers.

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High Purity Flow Restrictor News Brief

Porous metal flow restrictors provide permanent, reliable flow control in high purity applications without the high cost of mass flow controllers. These flow restrictors also eliminate the susceptibility to tampering and incorrect adjustment of needle valves, and the turbulence and clogging caused by calibrated orifices.

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High Purity Gasket Filters News Brief

Mott Gasket Filters provide precise filtration for flows as low as 1 slpm and up to 20 slpm in both inert and specialty gases

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Hot Gas Filtration Using Sintered Metal Fiber Media

Sintered metal fiber filters have been utilized for gas/solid separation in numerous industrial gas filtration applications in the chemical process, petrochemical and power generation industries. Applications require particulate removal to protect downstream equipment, for product separation, or to meet environmental regulations.

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Hot Gas Filtration Using Sintered Metal Filters

The benefits of using either sintered metal powder or sintered metal fiber filters are described in this paper for industrial applications requiring semi-permanent filtration in especially demanding applications including corrosive environments at high temperatures and pressures. Filter operation and performance are discussed for selected applications, including fluid catalytic cracking (FCC) and continuous catalytic reforming/regeneration (CCR) process operations. 

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How Porous Metal Protects People

Mott flow restrictors feature clogresistant surface areas 500 times greater than those of equivalent orifices. Which explains why they've made their way into a tremendous variety of flow control applications, including devices which help sustain and protect people.

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ISO Certificate

ISO 9001 Certification

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Medical Porous Metal Membrane Filters

To control the flow and purity of liquids and gases, there’s no better choice than Mott porous metal. High-strength, chemically inert, infinitely flexible in size, shape, and porosity, Mott media has been proven for decades in a wide variety of medical applications including drug delivery devices, cochlear implants, 02 flow control, injection pumps, biomarkers, and surgical instruments.

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Mold Vents

Mott’s porous metal material has been used in mold vent applications by many plastic, rubber and metal molders for over 50 years. 

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Mott Process Systems Filtration News Brief

Mott HyPulse filtration systems provide superior efficiencies when used as replacement technology for outdated leaf filters, cyclones, and filter presses. Filtration requirements in Refineries, Specialty Chemical Processing and the Pharmaceutical industry demand the removal of fine solids.

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Mott Products for Biotechnology News Brief

Mott porous metal media provides the best material for a wide range of applications in biotechnology research and production such as filters, spargers, and flow restrictors and controls.

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Nickel Gas Filters Safer than Polymer

When it comes to gases such as oxygen, nitrogen trifluoride and fluorine, there's no room for guessing which materials are compatible.  Mott nickel filters are safer than polymer filters.

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Porous Metal Crossflow Filters for Gaseous and Liquid Process Sampling

The technology for sampling of liquid and gaseous streams has been impacted by two recent developments. First, plant implementation of automated process control requires real time sampling of fluids contaminated with particulates. Secondly, compliance with EPA regulations demands sampling of plant effluents at the discharge point often under harsh operating conditions. Plant operators with an eye on the bottom line are looking for sample extracting devices requiring little or no maintenance, fast response time giving quality results in real time and effective protection of their expensive analyzing equipment. Porous metal crossflow sampling filters offer reliable and accurate solutions for operators. This paper describes the operating principles and typical applications of these porous metal filters. 

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POU Filter Installation Instructions

Instructions for installing a high purity point of use filter.

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Process Filters for Refinery Apps

Mott All-Metal Filtration Systems are manufactured with porous metal or fiber metal media to withstand high temperatures without compromise in reliability. These filter systems operate continuously, to keep production at maximum levels. They are also self cleaning, using environmentally friendly "permanent" filter elements which help reduce or eliminate disposal costs. Our filters meet the demands of refinery and petrochem industries.

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Process Filters for Specialty Chemicals

Mott filter systems are completely enclosed unlike leaf filters and filter presses. Our filter elements, filters and automated filter systems provide reliable, long-lasting removal of solids from gases and liquids, especially in environments that are high pressure, high temperature and include high corrosive / aggressive chemistries.

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Process Filters for Tough Slurries

 Mott porous metal LSX Filters have been successfully installed and operated by customers for solid/liquid separations in nuclear wastewater, fatty alcohols, and solvent mixtures used in paints and coatings.

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Process Filtration Condensate Polishing

Mott porous metal filters provide a key advantage in preventing ion exchange resin from passing down stream to the water system. High-efficiency porous metal media is able to retain 100% of resin and has been tested to a downstream leakage of less than 0.1ppb in water.

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Process Filtration for Catalyst Recovery

Mott HyPulseÆ LSM Filter Systems have been applied extensively throughout the chemical and hydrocarbon processing industries for removal and recovery of supported precious metals and other valuable catalysts.

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Process Filtration for Coal Gasification

Coal Gasification with Mott Fiber Metal Media Generating power with higher efficiency, lower costs, and less pollution

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Reducing HPLC/UHPLC System Noise & Volume with High Performance Static Mixers

A revolutionary new inline static mixer has been developed and specifically tailored to meet the exacting demands of high performance liquid chromatography (HPLC) and ultra‐high performance liquid chromatography (UHPLC) systems. Poor mixing of two or more mobile phase solvents results in a high signal to noise ratio and, thus, decreased sensitivity. The homogenous static mixing of two or more solvents, while utilizing the minimal internal volume and physical size of a static mixer, represents the ultimate criteria for the ideal static mixer. The new static mixer accomplishes this goal via use of a novel 3D printing technology to create a unique 3D structure that achieves improved hydrodynamic static mixing with the highest percentage reduction in baseline sine wave per unit of internal mixture volume.  Greater than 95% reduction in baseline ripple was achieved using up to 1/2 the internal volume of some commonly available mixers. This mixer consists of interconnected 3D flow passageways that have varying cross‐sectional areas and varying path lengths as the fluid transverses across and through complex 3D geometric shapes. The mixing in the multitude of tortuous flow paths is coupled with localized turbulent flow and eddies to create mixing on the micro‐, meso‐, and macro‐scale. Computational fluid dynamic (CFD) modeling was employed in the design of this unique mixer. The test data presented demonstrates that superior mixing is achieved while minimizing the internal volume in various gradient test conditions, such as unparalleled mixing for Trifluoroacetic acid (TFA) and water/acetonitrile gradients.

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Semi Flow Restrictor Advantages

Mott flow restrictors allow gas to move through hundreds of microchannels without increasing flow velocity or creating irregular flow streams. 

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Semiconductors Toughest Gas Filters

Mott is the premier supplier of Hastelloy based filters to the semiconductor industry, allowing chemical compatibility with virtually any process gas. 

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Single-Stage Filtration with Sintered Metal Tubular Backwash Filters

Solid-liquid separation is often successfully practiced with filter systems where successively finer filter media are set up in stages. Tubular backwash filters with sintered metal media are an attractive alternative because they achieve the same degree of clarification in most cases in a single-stage separation.

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Sintered Metal Filter Systems for the Chemical Process Industry

Filtration systems, utilizing sintered metal media for solids/liquid separation, have proven to be an effective and economical alternative to other separation methodologies, which may be vulnerable to pressure spikes, high temperatures, and / or corrosive environments. Suitable applications are found in oil refineries, chemical and petrochemical processes, and pharmaceutical production facilities.

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Sintered Metal Filters for Hot and Corrosive Liquid and Gas Applications

Sintered metal filters are used for their high strength, corrosion resistance and high temperature capability in a variety of industries. The immediate advantages of sintered metal filters over other (polymeric and ceramic) filter materials are their ability to withstand higher pressures and temperatures, and their ductility and toughness to withstand process shocks and upset conditions. Sintered metal filters are routinely used, and are finding additional applications in refineries, petrochemical, chemical, power, pharmaceutical and semiconductor industries.

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Sintered Metal Filtration Technology for Industrial Wastewater Management

This paper will discuss Sintered Metal Filtration Technology and its diverse suitability in the field of industrial wastewater management. Applications vary from straightforward gas/liquid contacting, or sparging, to advanced separations using sintered porous metal backwashable media for both barrier and cross-flow filtration systems. 

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Sintered Metal Hot Gas Filters

Sintered metal filters have been used for hot gas filtration in various plants in the chemical process, petrochemical and power generation industries. These filters can provide particulate capture efficiencies of 99.9% or better. The temperature for filtration has been as high as 900C. Along with filtration efficiency consideration, more important criteria such as corrosion resistance, mechanical strength at service temperature and cake release issues are being addressed. These issues are critical to operating the hot gas filter successfully and cost effectively. Concerns related to hot corrosion and strength at high temperatures lead the technical community towards using ceramic filters.

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Sintered Metal Microfiltration Media

This paper describes the physical and mechanical properties of 0.1 m grade sintered metal media in Hiflow™ Nickel, 316L Stainless Steel and Hastelloy C-22. New manufacturing technology developments have enabled the manufacture of highly permeable sintered metal media, with fine porosity and high pore volume fraction. 

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Sintered Porous Metal Filtration Systems for Petroleum Refining Apps

Advances in filtration technology and filter media support improvements in catalyst recovery applications which improve overall product yield, increase the market value of the filtered product, reduce wear and tear of downstream equipment and minimize operator exposure to hazardous materials. This paper will discuss filter-operating parameters of sintered porous metal media and filtration system design criteria for optimizing performance in the removal of catalyst fines from slurry oil.

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Sintered Porous Metal Hepa Filter

An all-metal High Efficiency Particulate Air (HEPA) filter has been recently developed as an alternative to traditional HEPA filters fabricated with conventional glass fibers. This metal filter was developed utilizing sintered porous metal media fabricated from nickel metal powder. One specific application is the potential for replacement of glass fiber HEPA filters currently used in High Level Waste (HLW) tank ventilation systems at various Department of Energy (DOE) nuclear waste storage sites in the US. 

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Sparger Efficiencies News Brief

Mott porous metal spargers provide highly efficient mass transfer of gas into liquid through the creation of millions of fine bubbles. 

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Spargers for Ethanol Biofuels

sparging devices used in the production of ethanol biofuel

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Spargers for Oxygen Levels

Whether you need to reduce the level of oxygen in your process or increase the amount being
transferred into your application, Mott spargers can make the process more efficient and can be
manufactured in a wide variety of configurations to suit your specific need. Mott offers design as
well as fabrication services to ensure the proper sparging solution.

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Spargers in Pulp Mill pH

Mott took process information and sized a GasSaver based on the pH level, liquid flow rate, and the target time provided by this customer. 

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Steam Filters used in Biotechnology

In many areas of the biotechnology and pharmaceutical industries, vessels, piping and filter systems are sterilized by steam. If not properly filtered, the steam required to sterilize these systems may contain a considerable amount of rust, particulate or other pipe-scale

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Vacuum Chuck and Platens

Mott’s porous metal can be used as a vacuum chuck or as a platen. Porous metal provides a flat, smooth, uniform surface for maximum hold down capability. These features eliminate both deflection and the tendency to produce a pattern on the work piece. 

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Versatility of the Multimode Porous Metal Filter in Optimizing Filtration

The multimode porous metal filter offers the user significant operational versatility and design alternatives that are required in a myriad of process operations, thereby resulting in improved net filtration efficiency. Process data are compared to pressure filtration techniques used in standard candle filter and the inside-out filter arrangement. There are two methods of operating: 1.) Static or barrier type filtration and 2.) Dynamic or crossflow type filtration.

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Waste Minimization with Porous Metal Backwash Filters

Solid-liquid separation is an area in the Chemical Processing Industry (CPI) where plant engineers and process designers are focusing considerable efforts on waste minimization. Driving pressures include increased profitability and compliance with newly enacted governmental regulation on waste disposal. Efforts are targeted at waste source reduction, process modifications that minimize waste, and increased reuse and recycling of process components. Separation equipment manufacturers have responded in a variety of ways, such as increasing separation efficiency, developing reusable filter media, eliminating filter aids, and reducing the liquid content of the solid waste. Tubular backwash filters have gained increased acceptance in the CPI due to the use of a robust barrier for solids retention. They also offer high flow capacity, good solids concentrating, and simplicity of operation.

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Wicking and Pumping

Porous metal used for wicking and pumping applications

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