Vacuum/Pressure System for Crystallization

Product Specifications

Technical details and manufacturing context for Vacuum/Pressure System

Definition

The Vacuum/Pressure System is a critical component of an Industrial Chemical Crystallization Unit responsible for establishing and regulating the atmospheric pressure inside the crystallization chamber. It enables precise control over the boiling point and supersaturation levels of chemical solutions, which directly influences crystal nucleation, growth rate, crystal size distribution, and purity. This system typically works in conjunction with temperature control systems to optimize crystallization conditions for specific chemical compounds. The system operates by using vacuum pumps to reduce pressure within the crystallization vessel, lowering the boiling point of the solution to facilitate evaporation and concentration. Alternatively, it can apply positive pressure for specific crystallization methods. Pressure sensors and control valves maintain the desired pressure setpoint, while safety systems prevent over-pressurization or excessive vacuum conditions that could damage equipment or affect product quality. The system is typically skid-mounted and includes components such as vacuum pumps, compressors, pressure vessels, piping, valves, and instrumentation. It is designed to handle a range of operating pressures from 1.0 to 1.6 MPa, vacuum levels from 0.001 to 0.1 kPa, and temperatures from -20 to 200 °C. Pressure control accuracy is ±0.01 MPa, and vacuum pump capacity ranges from 20 to 100 m³/h. Compressor power is 5.5 to 45 kW, and electrical supply is 380-480 V AC, 3-phase, 50/60 Hz per IEC 60038. The system has an ingress protection rating of IP54 to IP65 per IEC 60529, and wetted parts are made of stainless steel 316L per ASTM A240. Connections are flanged, sizes DN25 to DN100 per DIN 2633. The skid-mounted unit weighs 500 to 3000 kg, and noise level at 1 m distance is 75 to 85 dB(A) per ISO 3744. Materials on file include stainless steel 316L, PTFE seals, and borosilicate glass viewports. These specifications are reference ranges; verify model-specific values and standards with the legal manufacturer or supplier.

Working Principle

The system operates by using vacuum pumps to reduce pressure within the crystallization vessel, lowering the boiling point of the solution to facilitate evaporation and concentration. Alternatively, it can apply positive pressure for specific crystallization methods. Pressure sensors and control valves maintain the desired pressure setpoint, while safety systems prevent over-pressurization or excessive vacuum conditions that could damage equipment or affect product quality.

Common Materials

Stainless Steel 316L, PTFE Seals, Borosilicate Glass Viewports

Technical Parameters

Parameter	Typical range	Notes & selection driver
Vacuum Level	0.001–0.1 kPa	Lower limit for solvent recovery
Temperature Range	-20–200 °C	Material limits
Pressure Control Accuracy	±0.01 MPa	For consistent crystal growth
Vacuum Pump Capacity	20–100 m³/h	Match vessel volume
Compressor Power	5.5–45 kW	Depends on pressure and flow
Electrical Supply	380–480 V AC	3-phase, 50/60 HzIEC 60038
Ingress Protection	IP54–IP65	Dust and water resistanceIEC 60529
Material of Wetted Parts	316L	Corrosion resistanceASTM A240
Connection Size	DN25–DN100	Flanged connectionsDIN 2633
Weight	500–3000 kg	Skid-mounted unit
Noise Level	75–85 dB(A)	At 1 m distanceISO 3744

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

Vacuum Pump
Creates and maintains vacuum conditions by removing gases from the crystallization vessel

Material: Stainless Steel
Pressure Vessel
Containment chamber designed to withstand both vacuum and positive pressure conditions

Material: Stainless Steel 316L
Pressure Sensors
Monitor and transmit pressure readings to the control system

Material: Stainless Steel with Ceramic Sensing Element
Control Valves
Regulate gas flow to maintain desired pressure setpoints

Material: Stainless Steel with PTFE Seats
Safety Relief Valve
Prevents over-pressurization by releasing excess pressure

Material: Stainless Steel

Manufacturers of Vacuum/Pressure System

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Frequently Asked Questions

What is the primary function of the Vacuum/Pressure System?

It creates and maintains controlled vacuum or pressure conditions inside a crystallization vessel to regulate boiling point and supersaturation, influencing crystal formation and purity.

What are the typical operating pressure and vacuum ranges?

The operating pressure range is 1.0–1.6 MPa, and the vacuum level is 0.001–0.1 kPa. These are reference ranges; confirm for your specific model.

Which materials are used for wetted parts?

Wetted parts are made of stainless steel 316L (per ASTM A240), with PTFE seals and borosilicate glass viewports. Verify material compatibility with your process.

How should I verify the system's compliance with standards?

Check the nameplate and documentation for standards like, IEC 60038, IEC 60529, and DIN 2633. Always confirm with the legal manufacturer or supplier for your specific unit.

Data Basis

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

Preliminary Technical Classification

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pressure:	Full vacuum to 10 bar absolute
flow rate:	Up to 500 L/min
temperature:	-20°C to 150°C
slurry concentration:	Up to 40% solids by weight

Vacuum/Pressure System

Product Specifications

Industrial Ecosystem & Supply Chain Structure

Application Fit & Sizing Matrix

Reliability & Engineering Risk Analysis

Compliance & Manufacturing Standards