Pre-Filtration Unit for Solvent Recovery Systems

Product Specifications

Technical details and manufacturing context for Pre-Filtration Unit

Definition

The Pre-Filtration Unit is a component within an automated solvent recovery and purification system. Its function is to perform initial filtration of used solvents, removing solid impurities, suspended particles, and larger contaminants before they reach the main purification stages. This protects downstream equipment from fouling and extends the service life of finer filtration membranes. The unit operates on physical filtration principles, using filter media such as cartridge filters, bag filters, or screen filters to trap particulates based on size exclusion. Solvent flow is driven by pressure differentials, with the unit designed to handle flow rates from 10 to 50 L/min and operating pressures from 1.0 to 1.6 bar. The filtration rating ranges from 50 to 100 microns, with a total effective filter surface area of 0.5 to 2.0 m². The unit is constructed with materials including stainless steel 316L, polypropylene, and PTFE membranes, and is available with housing materials of 304 or 316L stainless steel, and seal materials of EPDM or FKM. Operating temperature range is -20 to 80 °C, and the maximum allowable pressure drop is 0.05 to 0.1 MPa. Connection diameters range from 25 to 100 mm, with flange or threaded connections per DIN 2633. The unit's dimensions range from 400×300×600 to 800×500×1000 mm, and weight from 15 to 80 kg. These values are directory reference ranges; actual specifications must be confirmed with the legal manufacturer or supplier for the specific model and application. The unit is designed for skid mounting, and its footprint should be considered during installation. Regular monitoring of pressure drop is recommended to determine when filter cleaning or replacement is needed. Exceeding the specified operating limits may damage seals and filter media.

Working Principle

The Pre-Filtration Unit operates through physical filtration. Solvent enters the unit and passes through filter media, such as cartridge, bag, or screen filters, which retain particulates based on size exclusion. The pressure differential across the media drives the solvent flow, while contaminants are trapped. The unit may incorporate multiple filter stages or a single stage, depending on the configuration. The filtration rating, typically 50–100 microns, determines the particle size that is removed. The effective filtration area and flow rate are matched to the system's requirements. The unit is designed to handle a maximum operating pressure of 1.0–1.6 bar and a maximum pressure drop of 0.05–0.1 MPa, beyond which the filter may need cleaning or replacement. The materials of construction, including stainless steel 316L, polypropylene, and PTFE membranes, are selected for compatibility with various solvents. The operating temperature range is -20 to 80 °C, and exceeding these limits may damage seals and media. The unit's performance is verified by monitoring pressure drop and flow rate, and by periodic inspection of the filter elements.

Common Materials

Stainless Steel 316L, Polypropylene, PTFE Membrane

Technical Parameters

Parameter	Typical range	Notes & selection driver
Filtration RatingRequired	50–100 microns	Nominal or absolute pore size of filter mediaISO 16889
Flow RateRequired	10–50 L/min	Maximum solvent flow capacity
Operating PressureRequired	1.0–1.6 bar	Maximum allowable operating pressure
Filter Surface Area	0.5–2.0 m²	Total effective filtration area
Operating Temperature	-20–80 °C	Exceeding limits may damage seals and media.
Connection Diameter	25–100 mm	Flange or threaded; must match piping.DIN 2633
Housing Material	304/316L	316L for corrosive solvents; 304 for general use.ASTM A240
Seal Material	EPDM/FKM	FKM for high temp; EPDM for chemical compatibility.ASTM D2000
Max Pressure Drop	0.05–0.1 MPa	Indicates when filter needs cleaning or replacement.
Weight	15–80 kg	Depends on size and material; affects installation.
Dimensions (L×W×H)	400×300×600–800×500×1000 mm	Footprint for skid mounting.

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Components / BOM

Filter Housing Part
Contains filter elements and provides structural support

Material: Stainless Steel 316L
Filter Cartridge Part
Primary filtration media that traps particulates

Material: Polypropylene/PTFE pleated membrane
Pressure Gauge
Monitors pressure differential across filter

Material: Stainless Steel with glass face
Drain Valve
Allows for removal of accumulated contaminants

Material: Stainless Steel

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Pre-Filtration Unit.

Applied To / Applications

This component is essential for the following industrial systems and equipment:

Automated Solvent Recovery and Purification System

View system integration details

Automated Chemical Filtration and Separation System

View system integration details

Manufacturers of Pre-Filtration Unit

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Frequently Asked Questions

What is the typical filtration rating of the Pre-Filtration Unit?

The filtration rating is typically 50 to 100 microns, either nominal or absolute, as per ISO 16889. This range is a directory reference; the exact rating for a specific model must be confirmed with the manufacturer.

What are the operating pressure and temperature limits?

The maximum allowable operating pressure is 1.0 to 1.6 bar, and the operating temperature range is -20 to 80 °C. Exceeding these limits may damage seals and filter media. Always verify the actual limits for your application.

What materials are used in the construction?

The unit may be constructed with stainless steel 316L, polypropylene, and PTFE membranes. Housing materials can be 304 or 316L stainless steel (ASTM A240), and seal materials can be EPDM or FKM (ASTM D2000). Material selection depends on solvent compatibility.

How do I know when to replace the filter?

Monitor the pressure drop across the filter. The maximum allowable pressure drop is 0.05 to 0.1 MPa. When the pressure drop reaches this range, it indicates that the filter needs cleaning or replacement. Regular monitoring is recommended.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

Preliminary Technical Classification

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pressure:	Up to 10 bar (145 psi)
flow rate:	0.5-50 m³/h
temperature:	-20°C to 120°C
slurry concentration:	Up to 15% solids by weight

Pre-Filtration Unit

Product Specifications

Industry Taxonomies & Aliases

Applied To / Applications

Industrial Ecosystem & Supply Chain Structure

Application Fit & Sizing Matrix

Reliability & Engineering Risk Analysis

Compliance & Manufacturing Standards