Koyuan KY-3000SN Sulfur and Nitrogen Analyzer
| Brand | Koyuan |
|---|---|
| Origin | Jiangsu, China |
| Manufacturer Type | Direct Manufacturer |
| Product Category | Domestic |
| Model | KY-3000SN |
| Price | ¥260,000 |
| Standards Compliance | SH/T 0689, ASTM D5453 (S), SH/T 0657, ASTM D4629 (N) |
| Measurement Methods | UV Fluorescence (S), Chemiluminescence (N) |
| Sample Types | Liquid, Solid, Gas (with optional injectors) |
| S Range | 0.2 mg/L to 100% w/w |
| N Range | 0.1 mg/L to 100% w/w |
| LOD | 0.2 mg/L (S), 0.1 mg/L (N) |
| Carrier Gases | ≥99.98% O₂, ≥99.98% Ar |
| Furnace Temp Range | Ambient to 1100 °C |
| Temp Control Accuracy | ±3 °C |
| Power Supply | AC 220 V ±10%, 50 Hz ±0.5 Hz |
| Power Consumption | 2 kW |
| Dimensions | 680 × 480 × 400 mm |
| Data Acquisition | 24-bit USB interface, signal resolution <1 µV |
| PMT Voltage | Adjustable |
| Calibration | Single-point or multi-point |
| Software | Cross-platform (Windows/macOS/Linux), GLP-compliant data handling |
Overview
The Koyuan KY-3000SN Sulfur and Nitrogen Analyzer is a dual-detection elemental analyzer engineered for precise, simultaneous quantification of total sulfur (S) and total nitrogen (N) in hydrocarbon-based matrices. It operates on two orthogonal, standardized physicochemical principles: ultraviolet fluorescence detection for sulfur following high-temperature oxidative combustion (per SH/T 0689 and ASTM D5453), and chemiluminescent detection for nitrogen via thermal oxidation and subsequent NO* emission measurement (per SH/T 0657 and ASTM D4629). This architecture ensures trace-level sensitivity, broad dynamic range, and matrix robustness across liquid fuels (e.g., gasoline, diesel, jet fuel), crude oils, distillates, liquefied petroleum gas (LPG), and solid petrochemical feedstocks. The instrument’s combustion furnace—capable of stable operation from ambient temperature up to 1100 °C with ±3 °C thermal uniformity—enables complete sample mineralization under controlled oxygen/argon atmospheres, minimizing interferences from heteroatom cross-talk or incomplete oxidation.
Key Features
- High-fidelity dual-channel detection system: UV fluorescence photomultiplier tube (PMT) for sulfur with adjustable high-voltage bias, and chemiluminescence detector optimized for nitric oxide (NO) emission at 1200 nm
- 24-bit analog-to-digital conversion via native USB 2.0 interface, supporting sub-microvolt signal resolution and real-time noise suppression
- Modular sample introduction: standard liquid autosampler included; optional solid sampler (for polymers, catalysts, coal) and gas sampling loop (for LPG, refinery off-gas) available with validated calibration protocols
- Thermally stable quartz combustion reactor with dual-zone temperature control, compatible with light-duty and heavy-duty quartz裂解 tubes for optimized carbon removal and SO₂/NO yield
- Full compliance with regulatory data integrity requirements: audit-trail-enabled software supports 21 CFR Part 11–compatible electronic signatures, user access levels, and immutable raw-data archiving
- Robust hardware design using imported critical components—including OEM PMT, precision mass flow controllers, and ceramic thermocouples—to ensure long-term baseline stability and inter-laboratory reproducibility
Sample Compatibility & Compliance
The KY-3000SN accommodates heterogeneous sample forms without method revalidation: liquids (neat or diluted in xylene/chloroform), solids (powders, pellets, films, catalysts), and gases (via pressure-regulated loop injection). Each modality follows instrument-specific validation protocols aligned with ISO/IEC 17025:2017 requirements for testing laboratories. Regulatory compliance extends to industry-specific standards: SH/T 0689 and ASTM D5453 for sulfur in light hydrocarbons; SH/T 0657 and ASTM D4629 for nitrogen in liquid petroleum fractions; and ASTM D7183 for total nitrogen in middle distillates. All calibrations are traceable to NIST SRM 2724b (sulfur in diesel) and NIST SRM 2725a (nitrogen in fuel oil), with documented uncertainty budgets provided per analysis report.
Software & Data Management
KY-3000SN Control Suite is a platform-independent application built on Qt framework, certified for native execution on Windows 10/11, macOS 12+, and Ubuntu LTS distributions. It implements full GLP/GMP workflow management: method templates with locked parameters, sample sequence scheduling with barcode integration, real-time chromatogram overlay, peak integration using tangent skim and valley-to-valley algorithms, and automated drift correction via internal standard normalization. Raw data files (.kysn) are encrypted, timestamped, and include full metadata (operator ID, instrument ID, gas batch numbers, furnace ramp history). Export options include CSV, PDF analytical reports, and XML for LIMS ingestion. Audit trails record all user actions—including method edits, calibration updates, and result deletions—with IP address logging and digital signature verification.
Applications
- Refinery QC/QA: Total sulfur screening of gasoline per Euro 5/6 and Tier 3 specifications (≤10 ppm), diesel desulfurization monitoring, and nitrogen speciation in hydrotreater feedstocks
- Petrochemical R&D: Quantification of S/N in naphtha reforming streams, polymer additives (e.g., antioxidant sulfides), and catalyst poisons in FCC units
- Environmental compliance: Analysis of sulfur compounds in marine fuels (IMO 2020), nitrogen content in biofuels per EN 14078, and emissions-related feedstock characterization
- Academic research: Fundamental studies on heteroatom distribution in kerogen, asphaltenes, and synthetic fuels using calibrated solid-phase microextraction (SPME) coupling
- Contract testing labs: Accredited method delivery for ISO 8217 (marine fuels), ASTM D6443 (lubricants), and GB/T 17040 (Chinese national standard for petroleum products)
FAQ
What sample preparation is required for solid samples?
Solid samples must be homogenized and weighed into quartz boats (1–10 mg typical); optional ash-free filter paper wrapping is recommended for volatile organics. No acid digestion or derivatization is needed.
Can the instrument quantify sulfur and nitrogen speciation (e.g., thiophene vs. mercaptan)?
No—the KY-3000SN measures total elemental sulfur and nitrogen only. Speciation requires coupling with GC or HPLC separation upstream of the detector.
Is routine maintenance limited to consumables?
Yes: primary consumables include quartz combustion tubes, Mg(ClO₄)₂ drying agent, ozone generator cell (for UV mode), and PMT window cleaning kits. Annual calibration verification against certified reference materials is recommended.
How does the system handle high-salt or high-metal-content samples?
Samples with >1000 ppm Na/K require pre-treatment (e.g., solvent extraction or dilution) to prevent quartz tube corrosion and catalyst deactivation; optional ceramic-lined reactors are available for severe matrices.
Does the software support automatic report generation for regulatory submissions?
Yes: preconfigured templates meet EPA Method 1664, ISO 20846, and CNAS-CL01 reporting formats, including uncertainty calculation per GUM (JCGM 100:2008) and electronic signature fields compliant with FDA 21 CFR Part 11.
