Views: 0 Author: Wordfik Vacuum Publish Time: 2026-04-02 Origin: Wordfik Vacuum
High energy consumption: Traditional high-pressure adsorption and heating regeneration consume massive power, raising overall operational costs.
Low methane recovery rate: Atmospheric desorption cannot fully separate methane and CO2, resulting in 8%–15% methane loss.
Insufficient impurity removal: Residual moisture and trace corrosive gases reduce biomethane purity and damage downstream pipeline equipment.
Frequent material replacement: Adsorbents and scrubbing media fail to regenerate completely, leading to frequent replacement and high maintenance costs.
In the adsorption stage, porous adsorbents selectively capture CO2, nitrogen, and sulfide impurities while retaining methane. In the vacuum desorption stage, the vacuum system rapidly reduces chamber pressure to separate and discharge captured impurities. This realizes full automatic regeneration of adsorbents, ensuring long-term stable purification efficiency and greatly reducing methane loss.
Vacuum systems create low-pressure environments inside flash tanks to accelerate CO2 desorption and water medium regeneration. This vacuum-assisted regeneration technology improves CO2 removal efficiency by over 14% and increases final biomethane purity significantly, while reducing water resource waste.
Explosion-Proof Liquid Ring Vacuum Pumps (Best for Most Biogas Plants): Excellent tolerance for water vapor and corrosive mixed gas, no damage from liquid droplet impact. Stable 24/7 continuous operation, low maintenance cost, perfectly matching VSA/VPSA biogas upgrading processes.
Roots + Liquid Ring Combined Vacuum Units: Suitable for large-scale landfill biogas and agricultural biomethane projects. Provide deeper ultimate vacuum and faster pumping speed to improve adsorbent regeneration efficiency and plant output.
Anti-Corrosion Dry Vacuum Pumps: Applied for high-standard pipeline-grade biomethane projects requiring zero oil contamination, ensuring ultra-clean gas output quality.
Higher Methane Purity & Recovery Rate: Vacuum regeneration reduces methane loss to below 3%, increasing qualified biomethane output and economic revenue.
30%+ Energy Saving: Low-pressure vacuum desorption replaces high-pressure regeneration, cutting overall power consumption of upgrading units.
Extended Adsorbent Service Life: Full vacuum regeneration avoids adsorbent saturation and failure, reducing replacement frequency and material costs.
Lower Pipeline Maintenance Cost: Thorough vacuum dehydration and impurity removal prevent downstream pipeline corrosion and blockage.
Compliance with Green Gas Standards: Produce pipeline-injectable biomethane that meets EU and international renewable energy certification standards.
Trace hydrogen sulfide and organic impurities corrode pump internals and sealing parts. Solution: Adopt anti-corrosion customized vacuum pumps and install multi-stage impurity filtration systems at inlets to intercept harmful substances.
Daily: Monitor vacuum pressure stability, pump operating temperature and noise to avoid abnormal shutdown.
Weekly: Clean inlet filter elements and impurity separators to prevent blockage and gas accumulation.
Quarterly: Replace anti-corrosion sealing parts and inspect pipeline tightness to eliminate micro air leakage.
Annual: Perform full system performance calibration and internal component inspection during plant scheduled maintenance.
Q1: What is the difference between VSA vacuum upgrading and traditional PSA biogas upgrading?
A1: VSA uses vacuum negative pressure for adsorbent regeneration instead of high-pressure decompression. It features lower energy consumption, higher methane recovery rate and longer adsorbent service life than conventional PSA technology.
Q2: Why liquid ring vacuum pumps are the first choice for biogas plants?
A2: Liquid ring pumps tolerate large amounts of water vapor and trace corrosive gas in biogas, with explosion-proof and anti-corrosion properties, fully adapting to harsh on-site working conditions.
Q3: Can vacuum technology improve biomethane pipeline injection standards?
A3: Yes. Vacuum deep impurity removal and dehydration effectively eliminate CO2, moisture and sulfide impurities, making finished gas meet national and international pipeline-grade biomethane standards.
Q4: Is vacuum upgrading suitable for small farm-scale biogas projects?
A4: Absolutely. Compact skid-mounted vacuum VSA systems support small-scale biogas purification, with low investment cost and flexible deployment for distributed biomass projects.
