Coalbed Methane Pre-Cooler

Overview

Yipu Coalbed Methane (CBM) Pre-Cooler is specifically designed for coalbed methane processing. Adopting mechanical refrigeration and intelligent control, it achieves deep gas drying with a minimum pressure dew point of 2℃. Featuring wide temperature and pressure adaptability, ultra-low pressure loss, and fully automatic operation, this integrated skid-mounted unit requires no special foundation and enables rapid deployment. With a processing capacity ranging from 60 to 10,000 Nm³/min, it serves as a critical front-end equipment to ensure stable and efficient operation of downstream processes.

I. Market Pain Points

The following issues are prevalent in current coalbed methane extraction and processing:

• Difficult Temperature Control: Inlet temperature of coalbed methane fluctuates drastically (-20℃~80℃), making stable processing challenging for conventional equipment.
• Poor Pressure Adaptability: Wide operating pressure range (0.05~8.0MPa) poses difficulties for ordinary equipment to handle both high and low pressure conditions.
• Inaccurate Dew Point Control: Stringent pressure dew point requirements (≤2℃~15℃) cannot be met by traditional drying methods for deep drying.
• High Energy Consumption and Pressure Loss: Some equipment exhibits pressure loss exceeding 0.05MPa, affecting system efficiency.
• Scarcity of Large-Scale Equipment: Conventional equipment fails to meet the high gas processing capacity demand (60~10,000 Nm³/min).
• Complex Installation and Long Cycle: Special foundations and complicated commissioning delay project progress.

II. System Process

The processing flow of the coalbed methane pre-cooler is as follows:

1. Inlet Gas Pre-Treatment → 2. Cooling Water Circulation Cooling → 3. PLC-Controlled Condensation and Drying → 4. Pressure Dew Point Control → 5. Clean Gas Output

The entire process is fully automated without manual intervention, supporting remote monitoring and intelligent adjustment.

III. Working Principle

The equipment adopts a technical route of mechanical refrigeration + plate heat exchange + intelligent dew point control:

• Joint operation of the cooling water system (0.2~0.4MPa, ≤32℃) and refrigeration unit.
• Coalbed methane enters the plate heat exchanger for heat exchange with the refrigerant, reducing the gas temperature.
• Water vapor in the gas condenses and precipitates, achieving deep drying with a minimum pressure dew point of 2℃.
• The PLC system real-time monitors parameters such as inlet temperature, pressure, and dew point, automatically adjusting refrigeration power and water flow.

IV. Core Advantages

Advantage Category	Specific Content
High Efficiency & Energy Saving	Pressure loss ≤0.05MPa; cooling water recycling ensures low energy consumption.
Intelligent Control	Fully automatic PLC operation with remote monitoring and fault diagnosis capabilities.
Strong Adaptability	Wide temperature and pressure design, suitable for various coalbed methane compositions and working conditions.
Rapid Deployment	Integrated skid-mounted structure, no foundation required; can be installed on flat indoor ground.
Stable & Reliable	Continuous operation design with heavy-duty structure (4100~18500kg) for long service life.
Large-Scale Capacity	Processing capacity covers 60~10,000 Nm³/min, meeting projects of all scales.

V. Technical Strength

• Control Technology: PLC programmable control with support for customized logic and communication protocols.
• Structural Design: Integrated skid-mounted and modular design for easy transportation and installation.
• Material & Process: High-pressure components adopt special steel for corrosion and high-pressure resistance.
• System Integration: Highly integrated cooling system, control system, and safety system.
• Customization Capacity: Supports customized process design based on provided gas composition tables.

VI. Product Introduction

Yipu Coalbed Methane Pre-Cooler is a high-efficiency gas pre-treatment equipment specifically designed for coalbed methane extraction and processing. With advantages such as wide working condition adaptability, deep drying, intelligent control, and rapid deployment, it is suitable for cooling and drying of various coalbed methane, natural gas, and unconventional gases.

VII. Application Scenarios

• Coalbed Methane Extraction Sites: Cooling and drying of wellhead gas.
• CNG/LNG Pre-Treatment: Serving as a pre-treatment unit before compression or liquefaction.
• Chemical Process Gas Treatment: Cooling and dehumidification of syngas, cracked gas, etc.
• City Gas Pressure Regulation Stations: Gas dew point control and system protection.
• Industrial Gas Supply Systems: Applications in metallurgy, glass, ceramics, and other industries.

VIII. Technical Specifications

Parameter Category	Technical Indicators	Remarks
Inlet Temperature	-20℃ ~ 80℃	Wide temperature adaptability
Working Pressure	0.05 ~ 8.0 MPa	Standard: 0.7 MPa
Gas Composition	Customized on demand	Tailored adaptation
Pressure Dew Point	≤2℃ ~ 15℃	Deep drying
Pressure Loss	≤0.05 MPa	Low-resistance design
Gas Processing Capacity	60 ~ 10,000 Nm³/min	Large-scale equipment series
Working Cycle	Continuous operation	Intelligent optional
Control Mode	PLC programmable control	Fully automatic operation
Installation Method	Indoor flat ground, no foundation required	Rapid deployment
Cooling Water Pressure	0.2 ~ 0.4 MPa	Industrial circulating water
Cooling Water Temperature	≤32℃	–
Power Supply	380V/50Hz	–
Equipment Weight	4100 ~ 18,500 kg	Heavy-duty equipment
Overall Dimensions	L(1050~8000)×W(2100~3300)×H(2200~3000) mm	Integrated skid-mounted design