Archive Anoxic Sterilization Chamber for Rare Books (Vacuum Nitrogen Technology)

Archive Anoxic Sterilization Chamber for Rare Books (Vacuum Nitrogen Technology)

Archive Anoxic Sterilization Chamber for Rare Books is a non-destructive, chemical-free solution designed to safely disinfect rare books, manuscripts, and archival materials. Using advanced vacuum nitrogen technology, the system creates a stable anoxic (oxygen-free) environment that eliminates insects, mold, and microorganisms at all life stages with over 99.99% effectiveness.

Unlike Library UV book sterilizer or ozone disinfection cabinet, which are mainly used for fast disinfection of general books, this system does not damage paper, ink, or organic materials, ensuring long-term preservation of valuable collections. Ideal for archive preservation, rare book protection, and cultural heritage conservation, it supports customizable chamber sizes (e.g., 0.5–1 m³ and above) and efficient batch processing for institutional use.

Overview

This device is specifically designed for museums, archives, libraries, and cultural heritage institutions to perform batch, non-destructive, and thorough insecticidal and sterilization treatment on precious collections including ancient books, archives, paintings and calligraphy, silk fabrics, bamboo and wood artifacts, leather, and more. It employs a pure physical method—no chemical agents, no radiation, no heating, and no humidity change throughout the entire process. It has no adverse effects on the molecular structure or mechanical strength of collection materials (paper, pigments, binding adhesives, silk, leather, etc.), and leaves no harmful residues after treatment. Operators require no protective gear and can directly handle treated items, as the process is completely safe for human health. The device features an all-metal body for high reliability and interference immunity, making it suitable for long-term, repeated use by institutions. It is the museum-grade standard solution for ensuring the permanent preservation of valuable collections.

Working Principles

The device automatically performs multiple cycles of “vacuum extraction → nitrogen injection” inside a sealed chamber, ultimately reducing the oxygen concentration to an extremely low level (anoxic environment) and maintaining this state for a set period. During this process:

1. Anoxic asphyxiation: All aerobic pests (adults, larvae, eggs, and pupae) die from lack of oxygen, achieving a kill rate of >99.99%.
2. Decompression and evaporation synergy: The low-pressure environment created by vacuum extraction accelerates the evaporation of moisture from the pests’ bodies, further disrupting their physiological structure.
3. Mold inhibition: The anoxic environment effectively kills aerobic mold and prevents spore germination.

The entire treatment process adds no chemical agents, produces no harmful gases or pollutants, and causes no temperature rise inside the chamber. Key indicators of the collections—such as reflectance of inscriptions, tensile strength, and burst strength—show no measurable degradation. After treatment, the collections can be safely removed, accessioned, or returned to shelves.

Functions and Highlights:

1.1 Oxygen Isolation Function: The vacuum system continuously extracts oxygen to control its content. Pests require oxygen for respiration and metabolism. Under low-oxygen conditions, pests must fully open their spiracles, leading to hyperactivity and accelerated metabolism. The increased oxygen demand cannot be met, causing the pests to suffocate.

1.2 Evaporation Function: Causes internal fluids of pests to evaporate, damaging the proteins of adult insects, larvae, eggs, and pupae.

1.3 Low-Temperature Function: Rapidly reduces the surface temperature of pests by causing significant moisture evaporation.

1.4 Insecticidal Function: Effectively exterminates adult insects, larvae, eggs, and pupae in archived items.

1.5 Sterilization Function: Kills aerobic bacteria and inhibits the growth and reproduction of anaerobic bacteria and filamentous fungi.

Safety Features

1.1 Equipped with original imported pressure sensors and temperature-humidity sensors. During vacuuming, an automatic humidifier maintains humidity between 35%-60%, adjustable from 10%-100%.

1.2 Equipment failure alarm with automatic main power cut-off.

1.3 Low noise level: ≤70dB.

1.4 Equipment Composition

The system includes a vacuum chamber, vacuum system, mobile trolley cart, temperature control system, vacuum sensors, pipelines, vacuum valves, PLC touchscreen control system, drip control system, and frame. Refer to the final delivered packages for more details.

Technical Parameters(For reference)

Product Name: Archive Vacuum Nitrogen-Filled Insecticidal and Sterilization Machine Model: AHVND-1
Disinfection Capacity: About 230 boxes (Archive box size: 220×310×40 mm)
Disinfection Time: 48-72 hours
Vacuum Disinfection Chamber Size: Approx. 1 m³ (900×700×1600 mm)
Vacuum Chamber Door: Manual carbon steel door
Humidification System: Yes
Overall Dimensions: 1700×1370×1800 mm (nominal size)
Total Power Consumption: Around 4 kW
Vacuum Pump Speed: 100 m³/h
Operating Vacuum Level Display: Yes. <12 Torr (10 Torr-98.67 kPa) with imported vacuum sensor
Vacuum Chamber Leakage Rate: ≤100 Pa/min
Input Voltage: Customizable (e.g., 380V±10%, 50Hz, 3PH)
Transport Weight: Around 900 kg
Operating Modes: Manual and automatic modes
Door Mechanism: Automatic mechanical drive system
Equipment Structure: Composed of vacuum chamber, vacuum pump system, heating system, and PLC control system
PLC and Touchscreen: Imported LCD, 10”
Temperature Control System: Automatic temperature control
Nitrogen Source: Nitrogen generator, ≥1 m³/h, 99.9% purity

Remarks:

1. Technical is for reference. We reserve the rights to improve the design and manufacturing without prior notice. All subject to the final contract.
2. We have sterilization capacity customized for Min. 0.5m³ to 1.0m³ or larger. The standard is the 1.0 CBM version.
3. As the device is large in size, make sure the libraries or museums have room for the device. And check if it can carry by the doorways and elevators (Weight is around 900kgs).