We Provides Turnkey Solutions

For Fine Chemical Manufacturing Equipment.

We Have Our Own Patented Technology

We care about every requirement from our client.

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About Qino

30 Years Of Expertise In Fine Chemical Process Equipment

With a decade of expertise in fine chemicals, Qino is a full-service provider integrating consulting, design, manufacturing, installation, and maintenance - delivering end-to-end solutions from project planning to commissioning.

Proprietary Technology

Domestic R&D patents with continuous innovation.

Cost Efficiency

Optimized ROI and reduced lifecycle costs.

Turnkey Delivery

Proven project management for hassle-free execution.

Rapid Response

Flexible customization with shorter lead times.

Service Coverage

Process Consulting · Engineering Design · Equipment Manufacturing · On-site Installation · Ongoing Support.

Process Technology Advantages

Qino’s SO3 membrane sulfonation technology helps customers achieve stable production, high product quality, lower energy consumption, and flexible multi-product manufacturing.

Qino's core technology is built on the SO₃ membrane sulfonation process platform, the most advanced and environmentally friendly sulfonation technology in modern fine chemicals. Compared to traditional sulfuric acid or chlorosulfonic acid processes, SO₃ membrane sulfonation offers significant advantages in reaction efficiency, byproduct reduction, and product purity.

Technical Principles

Core Process Flow

Process Technology Advantages

Proprietary Technology Highlights

Automatic Storage System

Automatic Storage System

Sulfonation Reaction Mechanism

Sulfur trioxide (SO₃) reacts with organic feedstock in a membrane reactor through gas-liquid phase reaction. SO₃ molecules undergo electrophilic substitution with feedstock molecules at the liquid film surface to produce sulfonic acid products. Reaction formula:
R-H + SO₃ → R-SO₃H
(Alkylbenzene / Olefin / Fatty Acid Methyl Ester + Sulfur Trioxide → Sulfonic Acid Product)
Automatic Storage System

Membrane Reactor Working Principle

• Liquid feedstock forms uniform film along inner wall of vertical reaction tubes
• SO₃ gas flows through reactor center, contacting liquid film for reaction
• Secondary protection air technology: protective gas injected around main SO₃ stream
• Precise reaction temperature control (45-55°C) prevents side reactions and oxidation

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Automatic Storage System

① Sulfur Handling & SO₃ Generation System
Melting → Drying → Catalytic Conversion (V₂O₅ catalyst) → SO₃ Cooling & Stabilization

② Sulfonation Reaction System
Multi-tube membrane reactor → Precise temperature control → Secondary protection air → High conversion rate (≥98%)

③ Aging & Hydrolysis System
Product maturation → Anhydride conversion → Hydrolysis stabilization → Sulfonic acid product
Automatic Storage System

④ Neutralization & Post-treatment System (Optional)
Continuous flash evaporation neutralization → Degassing & filtration → Product formulation

⑤ Exhaust Treatment System
Multi-stage absorption → SO₂/SO₃ recovery → Waste heat utilization → Environmental compliance

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Automatic Storage System

Reaction Efficiency
• Conversion rate ≥98%, high feedstock utilization
• Reaction time only 10-15 seconds, continuous and efficient
• Precise molar ratio control, reduced excess SO₃ consumption

Product Quality
• High active matter content (≥96% LABSA, ≥35% AOS/MES liquid)
• Light color (LABSA≤50 Klett, MES≤100 Klett)
• Minimal byproducts, high purity
Automatic Storage System

Environmental Performance
• No waste acid generation, 90% less waste vs. sulfuric acid sulfonation
• Multi-stage exhaust absorption and recovery, SO₂ emissions compliant
• Waste heat recovery system, 15-20% energy reduction

Safety & Control
• DCS fully automatic control, ±1°C precision
• Multiple safety systems: emergency shutdown, gas detection, pressure relief
• 24/7 stable operation, low failure rate
Automatic Storage System

Flexibility
• Multi-product compatible: LABSA, AOS, MES, SLES, etc.
• Modular capacity: 1,000-50,000 tons/year scalable
• Both liquid and powder products supported

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Automatic Storage System

Secondary Protection Air Technology
Domestic patented technology. Protective gas injected around main SO₃ stream increases SO₃ concentration, reduces side reactions, and improves product color.

Precision Temperature Control System
Multi-point temperature monitoring in reactor with real-time DCS regulation ensures optimal reaction temperature window.
Automatic Storage System

Continuous Flash Evaporation Neutralization
Proprietary neutralization process with automatic pH control, excellent product uniformity, suitable for large-scale continuous production.

Bleaching Process (MES-specific)
Developed specifically for MES products' tendency to discolor. Proprietary bleaching system ensures product color <100 Klett.

High Reaction Efficiency

Conversion rate up to 98% or above, with fast continuous reaction and precise SO3/feedstock ratio control.
Stable Product Quality

Produces high active matter, light color, and low byproduct surfactants through accurate temperature and process control.
Energy-Saving Operation

Integrated waste heat recovery helps reduce energy consumption and improve long-term operating economy.
Environmental Compliance

Multi-stage exhaust absorption and SO2/SO3 recovery reduce emissions and support cleaner production.
Automatic Control System

PLC/DCS control enables stable 24/7 operation, real-time monitoring, and reliable safety interlocks.
Flexible Production Platform

Compatible with LABSA, SLES/AES, AOS, MES and other surfactant production lines, with scalable capacity options.