Natural Gas Pre-Cooler

Overview

Yipu Natural Gas Pre-Cooler delivers three core values through advanced temperature control technology:

1. Enhanced Processing Efficiency: Precise temperature control creates optimal conditions for subsequent acid gas removal and dehydration processes, improving amine solution absorption efficiency and reducing desulfurization costs.
2. Significant Energy Conservation: Variable-frequency refrigeration system reduces energy consumption by over 30%; optional waste heat recovery enables cascade energy utilization.
3. Safe and Reliable Operation: Multiple safety protection systems adapt to various operating condition changes, ensuring continuous and stable operation.

This product is particularly suitable for large-scale natural gas processing plants and LNG liquefaction facilities, serving as a key pre-treatment equipment for efficient natural gas processing with a typical investment payback period of 2-3 years.

I. Market Pain Point Analysis

1. Poor Gas Quality Stability Affects Subsequent Processing
   • Large temperature fluctuations (20-80℃) of wellhead natural gas impact the stability of subsequent acid gas removal and dehydration processes.
   • Inaccurate temperature control reduces amine solution absorption efficiency and increases desulfurization costs.
2. Severe Energy Waste
   • Traditional cooling methods have high energy consumption and lack heat recovery systems.
   • Waste heat in high-temperature natural gas is not effectively utilized.
3. Insufficient Equipment Adaptability
   • Natural gas compositions vary significantly across different gas fields, making conventional equipment difficult to universalize.
   • Performance is unstable when processing capacity fluctuates, affecting the operation of liquefaction facilities.

II. System Process Flow

Four-Stage Cooling System:

1. First-Stage Pre-Cooling
   • Raw natural gas (20-80℃) enters the shell-and-tube heat exchanger.
   • Initial heat exchange with the refrigerant reduces the temperature to 40-50℃.
2. Second-Stage Deep Cooling
   • Pre-cooled natural gas enters the plate-fin heat exchanger.
   • Temperature is precisely controlled within the dew point range of 2-15℃.
3. Third-Stage Condensate Separation
   • Cooled natural gas enters the high-efficiency separator.
   • Heavy hydrocarbons and condensed water are effectively separated and automatically discharged.

Intelligent Control System:

• PLC automatically adjusts the temperature according to gas composition and downstream requirements.
• Real-time monitors system pressure to ensure safe operation.

III. Working Principle

High-Efficiency Heat Exchange Technology:

• Adopts a combined shell-and-tube + plate-fin heat exchanger design, increasing the overall heat transfer coefficient by 40%.
• Multi-stage gradient cooling prevents hydrate formation.

Precision Control Principle:

• Real-time adjusts cooling parameters based on natural gas composition.
• Anti-freezing protection system ensures safe equipment operation.
• Pressure-temperature coordinated control optimizes system energy efficiency.

IV. Core Advantages

1. Precision Temperature Control Technology
   • Temperature control accuracy of ±0.5℃.
   • Automatically adapts to cooling requirements of different gas sources.
2. High-Efficiency and Energy-Saving Design
   • Variable-frequency refrigeration system improves partial-load energy efficiency by 30%.
   • Optional heat recovery system for waste heat utilization.
3. Wide-Range Processing Capacity
   • Processing capacity: 60-10000 Nm³/min, covering requirements of various gas fields.
   • Pressure-bearing range: 0.05-8.0MPa, adapting to different wellhead pressures.
4. Intelligent Safety System
   • Three-level safety protection devices.
   • Remote monitoring and early warning system.

V. Technical Strength

Core Technologies:

• Natural gas multi-component phase change control technology.
• Anti-freezing and anti-clogging intelligent early warning technology.
• High-pressure system sealing technology.

Manufacturing Processes:

• Manufactured in compliance with ASME pressure vessel standards.
• Integrated skid-mounted design reduces on-site installation time.
• Strict explosion-proof certification.

VI. Product Series Introduction

Standard Series:

• YP-200 Series: 60-500 Nm³/min
• YP-500 Series: 600-2000 Nm³/min
• YP-2000 Series: 2500-5000 Nm³/min
• YP-5000 Series: 6000-10000 Nm³/min

Customized Configurations:

• Explosion-proof grade upgrade (Exd II CT4)
• Dual refrigeration system redundant configuration
• Remote intelligent operation and maintenance system

VII. Application Scenarios

Natural Gas Extraction:

• Shale gas wellhead pre-treatment, conventional natural gas field pre-treatment, coalbed methane processing.

Liquefied Natural Gas (LNG):

• Pre-treatment for LNG liquefaction facilities, pre-treatment for liquefaction peak-shaving stations.

Chemical Feed Gas Processing:

• Pre-treatment of methanol synthesis feed gas, cooling treatment of hydrogen production feed gas.

City Gas:

• Pre-treatment before gate station pressure regulation, processing of gas storage injection and production.

VIII. Detailed Technical Specifications

Parameter Category	Technical Indicators	Remarks
Operating Conditions
Inlet Air Temperature	20-80℃	Wide temperature range adaptation
Working Pressure	0.05-8.0 MPa	Standard: 0.7 MPa
Gas Composition	Customized on demand	Professional design
Performance Indicators
Pressure Dew Point	≤2℃~15℃	Precisely controllable
Pressure Loss	≤0.05 MPa	Low-resistance design
Gas Processing Capacity	60-10000 Nm³/min	Full series coverage
Technical Configuration
Working Cycle	Continuous operation	Stable and reliable
Control Mode	PLC programmable control	Fully automatic operation
Installation Method	Indoor flat ground, no foundation required	Rapid deployment
Utility Requirements
Cooling Water Pressure	0.2~0.4 MPa	Industrial circulating water
Cooling Water Temperature	≤32℃
Power Supply	380V/50HZ
Structural Parameters
Equipment Weight	4100~18500 kg	Heavy-duty equipment
Overall Dimensions (L×W×H)	L(1050~8000)×W(2100~3300)×H(2200~3000) mm	Integrated skid-mounted design