Nutsche Filter

Company Profile

PIONEER GROUP was founded in 2006, covered an area of 50,000㎡and has more than 200 employees. The headquarters of PIONEER GROUP which located in Zibo city, Shandong province - a famous manufacture base of chemical equipment in RR.China, also build two new manufacturing bases in Weifang city, Shandong province and Zhangye city, Gansu province.
Glass lined and stainless steel reactor, storage tank/receiver, distillation tank , film evaporator, vacuum dryer, filter, separator, heat exchanger, condenser, column systems and various accessories. Also can specializes in GMP standard products and customized operating unit of chemical process.

Why Choose Us

Our Factory
PIONEER GROUP is a professional design & manufacture in chemical equipment especially in glass lined equipment with advanced technology, completed production equipment, perfect quality control system and intimate sale and after-sale service.

Our Certificate
Certification of ISO 9001:2015, Design & manufacture License of pressure vessel, 10 Certificate of Patent

Production Equipment
CNC plasma cutting machine, CNC rolling machine, Automatic submerged arc welding machine, Swagging machine, Grinding machine, PLC control underground electric furnace, Coating room, Painting room, Spark tester, Thickness indicator, RT/MT tester, Hydraulic test machine and etc.

Our Service
The R&D department welcome customization with many years experience,we can design and order all kinds of glass lined and stainless steel products and non-standard products according to the requirements of customers.

Stainless Steel Agitated Nutsche Filter

Nominal Filtering Area: 0.1 to 10m2 . SST ANF or ANFD has advantages of multifunctional, high

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Glass Lined Agitated Nutsche Filter

Nominal Filtering Area: 0.2 to 2.84m2. Glass lined ANF or ANFD has advantages of anti-corrosion,

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What is Nutsche Filter？

The nutsche Filter is the industrial version of the well known laboratory scale Buchner Funnel except that it is designed to operate under either on vacuum or pressure. In their modern version they were developed in the early 80's and the majority operates, usually under pressure, in batch oriented industries such as fine chemicals, dyes, pharmaceutics and pesticides.
Present day nutsche filters are constructed to perform a multitude of tasks including reaction, filtration, cake washing and thermal drying on a single unit. As such these are very sophisticated machines with tight process control on parameters such as pressure, temperature and pH. nutsche filters are well suited for handling flammable, toxic, corrosive and odor-noxious materials since they are autoclaved and designed for use in hazardous and ex-proof environments when extremely safe operation is required.

Benefits of Nutsche Filter

Drying and Washing
Once the filtration process is complete, the filter cake is further dried or washed, depending on the specific application. The filter cake can be washed with an appropriate solvent to remove any impurities, while drying ensures the separation of residual moisture from the filtered solids.

High Efficiency Filtration
Nutsche filters are renowned for their exceptional filtration efficiency, providing high-quality separation of solids and liquids. The combination of pre-coating, pressure, and filter cloth ensures an optimal filtration process, yielding purified filtrate and a well-structured filter cake.

Flexibility in Process Design
Due to their versatility, nutsche filters can be customized to suit specific industrial requirements. Process variables like temperature, pressure, and filtration time can be adjusted to optimize filtration conditions, enabling optimal results across diverse applications.

Cake Formation
As the liquid passes through the filter cloth, it leaves behind solid particles that accumulate on the surface, forming a layer known as the filter cake. The filter cake tightly adheres to the filter cloth, creating a seal that prevents any unfiltered liquid from passing through.

Application of Nutsche Filter

Pharmaceutical Industry

Nutsche filter finds extensive application in the pharmaceutical industry. It is utilized for the separation of active pharmaceutical ingredients (APIs) and the drying of pharmaceutical powders. The technique's high efficiency and product quality make it suitable for producing drugs with precise specifications.

Chemical Manufacturing

Nutsche filter is widely employed in chemical manufacturing processes. It ensures reliable separation of various chemicals, including catalyst recovery, dye production, and specialty chemicals. The versatility of nutsche filter makes it an invaluable tool in this sector.

Food and Beverage Industry

Nutsche filter plays a crucial role in the food and beverage industry. It facilitates the separation of solids from liquid extracts, such as vegetable oils and fruit juices. The gentle filtration process ensures the retention of essential nutrients and flavors, contributing to high-quality food products.

Environmental Applications

Nutsche filter is utilized in environmental applications such as wastewater treatment and sludge dewatering. The technique effectively separates solid waste from liquids, reducing environmental impact and enabling proper waste management.

Petrochemical Industry

In the petrochemical industry, nutsche filter is utilized for catalyst recovery and the production of fine chemicals. It enables efficient separation of solid catalyst particles from liquid reactions, ensuring optimal catalyst usage and enhancing product quality.

How to Improve Filtration With Nutsche Filters

Nutsche filters are an innovative solution to address the challenges inherent to traditional filtration methods, such as Büchner filtration and oven drying.

Nutsche filters are the ideal solution for obtaining high-purity, contaminant-free substances. Filtering, washing, resuspension and drying operations can all be performed in a single unit, thereby reducing operating times and improving product quality.

There is also a stirring feature that can be used for intermediate washings. Depending on the process, the product of interest may be the retained solid or liquid filtrate.

Nutsche filters are designed with high-quality inert materials, so synthetic processes can be carried out safely in a controlled environment at programmed temperatures. Their versatility makes them particularly suitable for a variety of industries, including pharmaceuticals, fine chemicals, and solid-phase synthesis, where liquid–solid extraction is so demanding.

In general use, the process starts by transferring the suspension to the vessel’s filter. The solids are retained on the filter membrane, forming a cake, while the wastewater flows efficiently through the outlet valve at the bottom of the system, where it is collected in a vacuum trap flask. The filtration is complete when all the solvent has been extracted from the mixture. In addition, cakes can be removed easily by just opening the bottom plate, which in turn simplifies the process required to change the filter membrane and clean the system.

Type of Nutsche Filter

Frame Nutsche Filter
The first type is the plate and frame Nutsche filter, which consists of vertical plates with horizontal frames that hold the filtration media. These filters are commonly used for batch processes and are suitable for applications with small to medium-scale production requirements.

Filter Press
The second type is the filter press, which has a more complex design compared to plate and frame filters. Filter presses contain a series of chambers formed by recessed plates and frames. The solid-liquid mixture is pumped into the chambers, and the solids are retained while the filtrate passes through the filter media. This type of Nutsche filter is highly efficient in separating solids from liquids and is often used in large-scale industrial processes.

Pressure Nutsche Filters
Our Pressure Nutsche Filter are used for Filtration of the Wet Material
Nutsche filtration is a batch filtration technique that uses vacuum and/or pressure in a closed vessel. The pressure/vacuum is used in combination with a filter plate fitted with the appropriate filter media to force liquid through the media, forming a solid bed often referred to as “cake”.
Nutsche filter/dryers can effectively perform the separation of solid matter from a liquid under pressure or vacuum, in a closed system.

Understanding the Nutsche Filtration and Drying Process

Filling/Charging
The first step involves the transferring of the product to be filtered, usually an aqueous or solvent based solid/liquid slurry, from the primary location (e.g. reactor) to the filter/dryer. The filter should be sized appropriately to handle the solids volume that is being charged. A general rule of thumb to follow is that the maximum solids height should be equal or less than the agitator stroke, typically 12 - 20 inches.

Filtering
The second step involves the use of pressure and/or vacuum to force liquid through the solid bed and filter media. The process is stopped when solids are visible, or can be continued until all the liquid is pushed out. There are various types of filter media available in nutsche filters – cloth, single layer metal screen, or multi-layer sintered metal. The media should be determined based on the characteristics of the slurry including particle size and shape, cake porosity, and compressibilit.

Displacement Washing
Here, fresh wash liquid is sprayed on top of the solid cake taking care not to disturb the surface of the cake. The liquid is forced through with pressure or vacuum. Displacement washing serves several purposes – it removes the liquid and its impurities while keeping the cake intact and it replaces the previous liquid with fresh liquid. There is also the opportunity prior to this step to try and close cracks if the cake has any via smoothing.

Reslurry Washing
As an additional washing option, a re-slurry washing can be performed if additional extraction or dissolving of impurities is necessary. This is executed by the addition of fresh wash liquid that is mixed with the solids. The agitator is stopped and raised before filtering the wash liquid. The re-slurry process is also used when a long contact time is needed between the wash fluid and the solids or the displacement wash does not provide the required wash quality.

Smoothing
This next step may be used after any filtration or wash, especially after the final wash, when gas is blown through the cake. The agitator is used to close cracks and compress the cake to reduce residual moisture level. This function will help to achieve uniform flow of liquid or gas through the filter cake, while helping to eliminate liquid and gas channelling that reduces the efficiency of displacement washing and gas blow through.

Drying/Cooling
In most filter types, the solid must be evacuated into a second dryer to complete the drying and subsequent cooling process. In nutsche filter/dryers, the two functions are combined and drying can take place in the same vessel. To accomplish this, the vessel surfaces (including the wall, base, and agitator) are heated. There are two types of drying that can be conducted – vacuum drying and convection drying. The method used depends on the product behavior. Vacuum drying, the most common method, involves a vacuum source, agitation, and dust filter.

Key Components of the Nutsche Filter

Jacketed Pressure Vessel
The jacketed pressure vessel serves as the workhorse of the ANFD, offering flexibility with multiple base configurations available in both one- and two-piece designs. Its jacketed design facilitates the effective transfer of heat, which is essential for temperature-sensitive applications. Additionally, insulation controls temperature and sheathing provides an extra layer of protection within the ANFD system.

Bi-directional Agitator
The agitator in an Agitated Nutsche Filter has unique bi-directional functionality that serves two purposes. When it rotates in one direction, the angled profile of the agitator blades smooths the product, removing the cracks to maintain the efficiency of the product. On the other hand, when it rotates in the opposite direction, the agitator engages in plowing or gentle mixing. This bi-directional capability allows for a wide range of process effects on the product being processed in the ANFD.

The Base Filtration
The Base Filtration Element adjusts pore sizes based on the input product, maintaining an efficient filtration process, and subsequently, it contributes to the separation phase within the Agitated Nutsche Filter.

Heating Elements
Heating elements manage temperature control, overseeing both heating and cooling mechanisms throughout the processing stages, achieved through the shaft and blade. It features a fully leak-proof arrangement that never interferes with the filtration and drying processes.

The Discharge Valve
The discharge valve is strategically positioned near the filter plate and is typically constructed with metal-to-metal sealing. Its quickly openable doors and circular plug above the filter plate efficiently facilitate the reliable automatic discharge of dry, solvent, slurry, or wet products.

The Bottom Line
Regardless of the industry you operate in, such as pharmaceutical or chemical, there is a constant need for innovative, time-saving, and cost-efficient filtering and drying mechanisms. These industries require reliable equipment to carry out complex operations and increase productivity. The Agitated Nutsche Filter (ANFD) is state-of-the-art machinery that meets these requirements for a wide range of industries.

How Do Nutsche Filter Work?

The nutsche filter working is a crucial aspect of industrial operations. It involves a series of steps that efficiently separate solids from liquids while securing product quality and process integrity.

Filling/Charging: Product transfer occurs from the primary location (e.g., reactor) to the Nutsche Filter/Nutsche Dryer, handling aqueous or solvent-based solid/liquid slurries. Proper sizing is crucial to balance the filtration time, cake volume, and capex costs to the client.

Filtering: Pressure or vacuum nutsche filter is used to drive the liquid through the solid bed and filter media until solids become visible or all liquid is expelled. Filter media types include cloth, single-layer metal screen, or multi-layer sintered metal, selected based on slurry characteristics like particle size and compressibility.

Displacement Washing: Fresh wash liquid is sprayed onto the solid cake without disturbing it, forcing impurities out through pressure or by using Vacuum. This step maintains cake integrity, replaces the previous liquid with fresh, and removes impurities effectively.

Drying/Cooling: Drying occurs in the same vessel that utilizes either vacuum or convection drying methods based on product behavior. Vacuum drying reduces solvent evaporation temperature, while convection drying uses hot, pressurized gas to dry solids without agitation, achieving less than 0.1% final product moisture.

Discharging: The final step involves product discharge through a valve/port on the vessel sidewall

Our Certificate

Certification of ISO 9001:2015, Design & manufacture License of pressure vessel, 10 Certificate of Patent

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FAQ

Q: What is the use of a nutsche filter?

A: Nutsche filtration is a batch filtration technique that uses vacuum and/or pressure in a closed vessel. The pressure/vacuum is used in combination with a filter plate fitted with the appropriate filter media to force liquid through the media, forming a solid bed often referred to as “cake”.

Q: What is the difference between sparkler filter and nutsche filter?

A: The Sparkler® Basket Filter is similar to the Nutsche design, but features a basket which hangs down into the vessel and has a horizontal filter plate attached to the bottom. The basket allows the user to easily remove all cake buildup for processing or disposal.

Q: How to operate an agitated nutsche filter?

A: Filling : The process begins by transferring the slurry into the Agitated FilterDryer. The equipment's size must accommodate the volume of solids, adhering to the guideline where the solid's height does not surpass the agitator stroke.

Q: What are the advantages of the Nutsche filter?

A: Glass Nutsche filters are pieces of multifunctional equipment utilized in a vast assortment of chemical processes. Their primary function is to filter solids from suspension in a liquid phase. However, they are also capable of product washing, re-slurry, vacuum drying, and product sampling.

Q: What is an agitated nutsche filter dryer?

A: The agitated nutsche filter/dryer is a multipurpose piece of equipment that you can find in a wide range of industrial processes. Often found just downstream of a reactor or crystallizer, it has the important job of separating and isolating solids from a solvent.

Q: What are the components of a Nutsche filter?

A: Nutsche filters typically contain four parts: The vessel: The filter body is typically either a one- or two-piece design. The drive assembly: The drive assembly includes the agitator system, with bellows, a gear box, a mechanical seal and a columnar support system.

Q: What is the alternative to the Nutsche filter?

A: Thin-cake pressure filtration technology offers an alternative to agitated nutsche filters and centrifuges for solid-liquid separation, cake washing, and drying. cake washing are integral steps in the production of bulk or final pharmaceutical prod- ucts.

Q: Which type of problem is caused in filter?

A: Frequent filter replacement, contaminated product, analytical test failures, and sub par flow performance are all symptoms of 3 basic filter problems. Corrosive fluids may attack the filter, causing damage and eventual failure of the filter element.

Q: What is the use of Nutsche filter?

A: Agitated Nutsche filters are used widely in the production processes of pharmaceutical, chemical and laboratory industries, among others. They are manufactured as agitated Nutsche filter dryers (ANFD'S) for the filtration and drying in the same unit of active pharmaceutical ingredients (API) and chemical compounds.

Q: What is the difference between sparkler filter and nutsche filter?

Q: What are the three most common types of filters?

A: There are four different types of filters: band-pass (BPF), high-pass (HPF), low-pass (LPF), and band-stop (BSF). Each kind has a specific use in a range of applications. Filter circuits are essential components of electronics that improve the effectiveness and caliber of signal processing for a variety of uses.

Q: What is a Nutsche filter and how does it work?

A: A Nutsche filter is a cylindrical vessel that allows the solid material to settle at the bottom while the liquid is filtered through a perforated plate or cloth. As the slurry is introduced into the filter, the solid particles settle due to gravity, and the clarified liquid passes through the filter medium, leaving behind the solids.

Q: What types of materials can be processed using a Nutsche filter?

A: Nutsche filters are suitable for processing various materials, including ores, minerals, chemicals, and pharmaceuticals. They are particularly useful for materials that require careful handling and where the separation of fine particles is important.

Q: What is the typical lifespan of a Nutsche filter?

A: The lifespan of a Nutsche filter depends on several factors, including the quality of the materials used, the frequency and nature of use, and the level of maintenance provided. With proper care, a Nutsche filter can last for many years, often decades.

Q: How much do Nutsche filters cost?

A: The cost of a Nutsche filter can vary greatly depending on its size, complexity, and the materials used in its construction. Custom-built filters can be significantly more expensive than standard models. It's essential to obtain quotes from multiple manufacturers and consider the total cost of ownership, including maintenance and operational expenses.

Q: How does a nutsche filter work?

A: When rotated clockwise, it pushes the dry cake towards the vessel wall during each rotation, thus expelling product intermittently out through the side discharge valve. Nutsche filter/dryers can effectively perform the separation of solid matter from a liquid under pressure or vacuum, in a closed system.

We're well-known as one of the leading nutsche filter manufacturers and suppliers in China. Please feel free to buy or wholesale high quality nutsche filter at competitive price from our factory. For more information, contact us now.

Nutsche Filter

Stainless Steel Agitated Nutsche Filter

Glass Lined Agitated Nutsche Filter

Application of Nutsche Filter

Understanding the Nutsche Filtration and Drying Process

Key Components of the Nutsche Filter

Our Certificate

FAQ