Industry Pain Points

High Water Content and High Mineralization Degree: The water content of produced gas from shale gas wellheads is as high as over 80%, and it contains corrosive ions such as Cl⁻ and Ca²⁺, which easily cause scaling and clogging in traditional dehydration equipment.

Poor Adaptability to Low-Pressure Conditions: Shale gas wellhead pressure fluctuates greatly (0.5-8MPa), and the efficiency of conventional TEG dehydration systems drops by more than 50% sharply under low pressure.

Interference from Organic Sulfur and Heavy Hydrocarbons: Sulfur-containing compounds (e.g., methyl mercaptan) and C6+ heavy hydrocarbons can poison molecular sieves, leading to frequent adsorbent replacement (the service life of traditional solutions is only 1-2 years).

Difficult Deployment in Remote Areas: Shale gas fields are mostly located in mountainous areas/deserts with insufficient power grid coverage, resulting in high operating costs for electrically driven equipment.

System Overview

Through the “mechanical separation – energy recovery – sulfur-hydrocarbon synergistic adsorption” innovation chain, Yipu Shale Gas Dehydration System overcomes the industry challenges of high mineralization degree, high sulfur content, and low-pressure fluctuations:

• Off-Grid Operation: 100% utilization of on-site energy from wellheads, suitable for remote gas fields.
• Cost Reduction & Efficiency Improvement: Comprehensive operating costs are 60% lower than those of TEG systems, with a payback period of <2 years.
• Intelligent Management: The digital twin system provides early warning of equipment abnormalities 48 hours in advance.

Solution Approach

Yipu Natural Gas Dehydration System Solution

Module	Technical Highlights	Performance Parameters
Mineralized Water Treatment Unit	Ceramic membrane filtration (0.1μm) + anti-scaling coating	Handles mineralization degree ≤80g/L, service life >5 years
Pressure Adaptive System	Venturi pressure stabilizing device, adapting to 0.5-10MPa pressure fluctuations	Outlet pressure fluctuation ≤±2%
Sulfur-Hydrocarbon Synergistic Adsorption Tower	Layered packing of silica gel-molecular sieve, sulfur poisoning resistance design	Methyl mercaptan ≤5ppm, dew point ≤-60℃
Off-Grid Energy Package	Solar PV + pressure energy recovery, enabling 100% off-grid operation	Daily energy consumption ≤5kWh (for treating 100,000 Nm³ gas)
Digital Twin Platform	Real-time prediction of adsorbent saturation status, optimizing regeneration cycle	Regeneration energy consumption reduced by 30%

Applicable Scenarios:

• Instant dehydration at shale gas wellheads
• Pretreatment of feed gas for CNG/LNG
• Associated gas recovery systems

Technical Principles

Yipu Shale Gas Dehydration Four-Stage Process:

1. Cyclonic Liquid Removal (Stage 1):The axial hypergravity separator removes over 90% of free water within 0.3 seconds, with mineralization resistance up to 50g/L.
2. Precooling and Dehumidification (Stage 2):Adopts ejector refrigeration (driven by wellhead pressure energy) to cool the gas from 45℃ to 10℃ without electricity consumption, reducing the dew point to -5℃.
3. Composite Adsorption (Stage 3):Hydrophobic silica gel-molecular sieve composite bed:

• Silica gel prioritizes the adsorption of organic sulfur (methyl mercaptan removal rate ≥95%)
• Molecular sieve (patented 3A-STM model) achieves deep dehydration to -60℃

4. Intelligent Regeneration (Stage 4):Low-pressure steam (0.8MPa) and shale gas self-circulation regeneration reduce energy consumption by 70% compared with traditional electric heating.

Core Advantage

Advantage	Details
Customized on Demand	Meets special working conditions; provides professional non-standard customization
Low Cost	Adopts cyclic regeneration process; significantly reduces operating costs
High Stability	Dual-tower structure with small pressure fluctuation; low noise and continuous gas supply
Fully Automatic Operation	Easy to operate, reducing labor input; improves efficiency
High Safety	Presets multi-level safety protection measures; supports automatic alarm
Low Failure Rate	Maintains low failure rate after 10,000 hours; high durability with almost no maintenance required

Technical Strength

Leading Adsorption Dehydration Technology

Uses high-performance molecular sieve adsorbents with high water absorption capacity and resistance to corrosion by acidic gases (H₂S/CO₂), ensuring deep dehydration with a dew point ≤-70℃.

The original hot nitrogen regeneration process reduces energy consumption by 30% compared with traditional electric heating regeneration, and integrates a waste heat recovery system to significantly improve energy efficiency.

Modular and Customized Design Capability

Core equipment adopts modular prefabrication, supporting rapid deployment (installation cycle shortened by 50%) and adapting to diverse scenarios such as offshore platforms, onshore gas fields, and LNG pretreatment.

Can customize single-tower, dual-tower, or multi-tower parallel systems according to customer needs, with a treatment capacity ranging from 10,000 to 1,000,000 Nm³/d, flexibly matching gas fields of different scales.

Intelligent Control and Remote Operation & Maintenance

Equipped with a PLC+IoT intelligent control system, it real-time monitors key parameters such as pressure, temperature, and dew point, supporting fault early warning and automatic adjustment.

Through cloud-based big data analysis, it optimizes the adsorption-regeneration cycle, extends the service life of molecular sieves, and reduces operation and maintenance costs by 10%-15%.

Energy-Saving and Environmental Protection Technology

Features zero-emission design for regeneration exhaust gas, complying with international environmental standards such as EU CE and US EPA.

Energy consumption is 25%-40% lower than that of traditional triethylene glycol (TEG) dehydration systems, helping customers achieve carbon emission reduction goals.

Long-Cycle Operation Reliability

Molecular sieves adopt anti-pulverization coating technology, with a service life of over 5 years, reducing replacement frequency.

Key components (e.g., valves, instruments) are selected from international first-tier brands (e.g., Siemens, Emerson), with a Mean Time Between Failures (MTBF) of over 100,000 hours.

Strong R&D and Engineering Experience

Possesses more than 19 patents and software copyrights in dehydration technology; the R&D team is led by doctors and has in-depth cooperation with universities and colleges.

Has over 1,000 successful cases worldwide, covering extreme working conditions such as high-sulfur gas fields in the Middle East and low-temperature environments in the Arctic.

Product Advantage Comparison

Indicator	Yipu System	TEG Dehydration	Refrigeration Method	Competitor Adsorption Systems
Dew Point	-60℃ (customizable to -80℃)	-40℃	-20℃ (limited by ambient temperature)	-50℃ (requires frequent regeneration)
Sulfur Resistance	Methyl mercaptan ≤5ppm	Requires pre-installed desulfurization device	Not applicable	Adsorbent service life ≤2 years
Energy Consumption	0.02kWh/m³ (off-grid operation)	0.18kWh/m³	0.12kWh/m³	0.08kWh/m³
Pressure Adaptability	0.5-10MPa without adjustment loss	Efficiency drops by 60% in low-pressure areas	Requires stable pressure	Optimal at 3-8MPa
Total Investment Cost	Low (no need for power grid/steam support)	High (requires boiler + chemicals)	Medium (high electricity consumption)	High (imported molecular sieves)

Typical Case

Project Name: Dehydration Station in Shale Gas Field, Sichuan Basin

Operating Conditions:

• Gas Volume: 300,000 Nm³/day, pressure fluctuating between 2.5-6MPa
• Water Quality: Mineralization degree 35g/L, methyl mercaptan 800ppm

Dehydration Effect:

• Dew point stably reduced from +40℃ to -65℃
• Adsorbents not replaced for 5 years (traditional solutions require annual replacement)

Economic Benefits:

• Saves 12 million RMB annually in TEG procurement and waste liquid treatment costs
• Annual power generation of 250,000 kWh through pressure energy recovery