China Ethane Compressor Factory: Zero ODP & Near-Zero GWP Refrigeration Solutions from Trusted Suppliers
Ethane Diaphragm Compressor Advantages
Absolutely Oil-Free & Ultra-High Purity Assurance
01The core structure of the diaphragm compressor completely isolates the gas from the lubrication system via a hydraulically driven metal diaphragm, achieving absolute oil-free compression. This is critical for polymer-grade ethane used as a high-end chemical feedstock, thoroughly preventing oil contamination and ensuring the quality and efficiency of downstream chemical reactions.
Static Seal Zero Leakage & Intrinsic Safety
02The gas chamber adopts a fully static seal design, theoretically achieving zero leakage. This characteristic provides the highest level of safety assurance for handling flammable and explosive ethane gas, effectively preventing the accumulation of explosive gas mixtures in the plant area caused by trace leakage. It is particularly suitable for installation in spaces with limited room or locations with extremely high safety requirements.
Key Design Points for Ethane Diaphragm Compressors
Precise Anti-Liquefaction Thermodynamic Design
01Given the critical temperature of ethane at 32.28°C, preventing liquefaction is the core of the design. Accurate thermodynamic calculations must be performed to ensure that the gas temperature after each compression stage, as well as the outlet temperature of the inter-stage coolers, is significantly higher than the dew point temperature of ethane at that stage's pressure, with a safety margin of 5-10 K. High-sensitivity temperature sensors and an interlock system must be configured to monitor the discharge temperature in real time, immediately triggering an alarm or shutdown when approaching dangerous values.
Optimized Material Compatibility & Life Management
02Wetted parts must be made of materials compatible with ethane, such as 316L stainless steel. Special attention must be paid to the fatigue performance of the diaphragm under operating conditions near the critical region. The material selection, heat treatment process, and pre-tension setting require specific optimization to address the specific thermal stresses that may arise from ethane compression, and a predictive maintenance plan should be established.
Multi-Layered Safety Monitoring & Relief System
03A three-layer diaphragm structure should be adopted, with diaphragm rupture monitoring sensors installed between the oil chamber and gas chamber for early warning. Combustible gas concentration probes should be integrated into the compressor body and inlet/outlet piping. Additionally, nitrogen purge connections must be designed for safe system displacement before startup and after shutdown. The discharge piping of safety relief devices should be routed to a safe flare system or a high-altitude vent stack.
Certificates
Model Selection
| No. | Model | Cooling water | Flow | Inlet pressure | Outlet pressure | Dimensions L×W×H | Weight | Motor Power |
|---|---|---|---|---|---|---|---|---|
| (L/h) | (Nm³/h) | (MPa) | (MPa) | (≈mm) | (≈kg) | (kW) | ||
| 1 | GZ-18/40-45 | 500 | 18 | 4 | 4.5 | 1200×900×1200 | 800 | 4 |
| 2 | GZ-20/29-45 | 500 | 20 | 2.9 | 4.5 | 1200×900×1200 | 800 | 4 |
| 3 | GZ-180/15-40 | 3000 | 180 | 1.5 | 4 | 2030×1045×1700 | 2500 | 30 |
| 4 | GV-10/1-25 | 600 | 10 | 0.1 | 2.5 | 1500×780×1080 | 800 | 4 |
| 5 | GV-120/3.5-12 | 2000 | 120 | 0.35 | 1.2 | 2200×1800×1700 | 3000 | 22 |
| 6 | GV-100/3-11 | 2000 | 100 | 0.3 | 1.1 | 2200×1800×1700 | 3000 | 18.5 |
| 7 | GL-25/15 | 1000 | 25 | Atmospheric | 1.5 | 2200×1650×1450 | 3000 | 7.5 |
| 8 | GL-80/5.5-35 | 1500 | 80 | 0.55 | 3.5 | 2000×1800×1200 | 3000 | 15 |
| 9 | GL-140/0.4-5 | 2000 | 140 | 0.4 | 0.5 | 3230×1770×2200 | 3000 | 18.5 |
| 10 | GD-400/8-40 | 8000 | 400 | 0.8 | 4 | 3600×2500×1700 | 6000 | 75 |
| 11 | GD-450/1-12 | 9000 | 450 | 0.1 | 1.2 | 3800×2300×2000 | 100000 | 90 |
| 12 | GD-1000/9-12 | 3000 | 1000 | 0.9 | 1.2 | 3200×1800×1900 | 4000 | 30 |
Case Study
Frequently Asked Questions
Why is an absolutely oil-free compressor required for ethane processing?
Ethane is heavily used as a high-end chemical feedstock for polymer-grade production. A diaphragm compressor completely isolates the gas chamber from the lubrication system using a metal diaphragm, eliminating any risk of oil contamination and ensuring the high purity required for downstream chemical reactions.
How does the static seal design ensure safety with flammable ethane?
The static seal design replaces dynamic seals, which are prone to wear and leakage. By achieving a completely static hermetic seal, the compressor achieves zero gas leakage, preventing the accumulation of explosive ethane-air mixtures in the operating area.
What is the critical temperature of ethane, and how does it affect design?
Ethane has a critical temperature of 32.28°C. To prevent liquefaction during compression, the thermodynamic design must keep the gas temperature at each stage and the outlet of the coolers 5-10 K above its dew point at that specific pressure.
What materials are compatible with ethane in diaphragm compressors?
All wetted parts must be made of materials compatible with ethane, such as 316L stainless steel. Special optimizations, including precise heat treatment and pre-tensioning, are applied to the metal diaphragm to manage thermal stresses and fatigue.
How does the multi-layered safety monitoring system protect the equipment?
The compressor features a three-layer diaphragm structure with built-in rupture detection sensors. If any layer fails, the sensor warns operators immediately before leakage occurs. The system also integrates combustible gas detectors and nitrogen purge systems for safe startups and shutdowns.
Are both water-cooled and air-cooled options available for these compressors?
Yes. Depending on the specific model (GZ, GV, GL, GD) and site requirements, both water-cooled and air-cooled systems can be configured to manage thermodynamic demands and maintain stable operating temperatures.