Junray ZR-D11A Flue Gas Ice-Bath Sampling Box
| Brand | Junray |
|---|---|
| Origin | Shandong, China |
| Manufacturer Type | Direct Manufacturer |
| Product Category | Domestic |
| Model | ZR-D11A |
| Instrument Type | Flue Gas Sampler |
| Target Analyte | Gaseous Total Mercury |
| Flow Accuracy | ±5% |
| Sampling Flow Rate | 1 mL/min |
| Flue Gas Velocity Equivalent | 1 mL/min |
| Moisture Content Range | 0–85% |
Overview
The Junray ZR-D11A Flue Gas Ice-Bath Sampling Box is a purpose-built, temperature-controlled sampling module engineered for the quantitative collection of gaseous total mercury (Hg⁰ and Hg²⁺) from industrial flue gas streams. It operates on the principle of cryogenic absorption—maintaining absorption solutions (e.g., acidic potassium permanganate or gold-coated quartz traps) at sub-ambient temperatures (typically 0–4 °C) to suppress mercury re-emission and ensure quantitative retention during sampling. Designed as a modular auxiliary unit, it interfaces seamlessly with standardized flue gas sampling trains—including heated probe assemblies, impingers, and main flow control samplers—to comply with rigorous regulatory protocols for mercury speciation and mass balance studies. Its compact, insulated housing minimizes thermal drift and condensation interference, making it suitable for field deployment in stack testing, continuous emission monitoring system (CEMS) validation, and source apportionment investigations.
Key Features
- Engineered ice-bath chamber with dual independent compartments—each accommodating one large-volume bubble absorption train (e.g., two 125 mL U-shaped impingers or paired gold-coated quartz traps)—enabling simultaneous parallel sampling for statistical validation and improved data reproducibility.
- High-efficiency thermal insulation using closed-cell polypropylene-based engineering plastic housing, minimizing heat transfer and maintaining stable cold-zone temperatures for ≥4 hours without external refrigeration under typical ambient conditions (25 °C).
- Integrated flow-path geometry optimized for laminar, low-turbulence delivery—reducing particle bounce, droplet carryover, and adsorptive losses across the absorption interface.
- Modular quick-connect fittings compatible with ISO 10780-2 and EPA Method 29/30B tubing standards; supports both vacuum-driven and pressure-driven sampling configurations.
- Non-corrosive, chemically inert construction—resistant to acidic absorption media (e.g., 5% KMnO₄/H₂SO₄), halogenated oxidants, and trace chlorine species commonly present in coal- and waste-fired exhausts.
Sample Compatibility & Compliance
The ZR-D11A is validated for use with aqueous oxidative absorbents (e.g., KMnO₄–H₂SO₄, KBr–Br₂–H₂SO₄) and solid-phase sorbents (e.g., Au-coated quartz, activated carbon iodide) targeting elemental and oxidized mercury species. It meets the physical and operational requirements specified in HJ 543–2009 “Determination of Mercury in Stationary Source Exhaust Gas—Cold Vapor Atomic Absorption Spectrophotometry” and aligns with ASTM D6784-02 “Standard Test Method for Elemental, Oxidized, Particle-Bound, and Total Mercury in Flue Gas Generated from Coal-Fired Stationary Sources (Ontario Hydro Method).” Its design supports GLP-compliant field operations, including chain-of-custody documentation, blank control integration, and post-sampling transport stability verification per US EPA 40 CFR Part 63, Appendix A, Method 29.
Software & Data Management
As a hardware-only sampling module, the ZR-D11A does not incorporate embedded firmware or onboard data logging. However, it is fully interoperable with third-party flow controllers and data acquisition systems compliant with ISO/IEC 17025-accredited laboratories. When paired with certified flue gas samplers (e.g., Junray ZR-3720, Thermo Fisher FH62, or TSI AM510), it supports audit-ready digital record generation—including real-time flow rate, duration, temperature log timestamps, and calibration traceability—meeting FDA 21 CFR Part 11 requirements when implemented within validated LIMS environments.
Applications
- Regulatory stack testing for mercury emissions compliance (e.g., MATS, EU IED Annex VII, China GB 13223–2011).
- Method validation and inter-laboratory comparison studies for Hg speciation analysis.
- Source testing of municipal solid waste incinerators, coal-fired power plants, cement kilns, and non-ferrous metal smelters.
- Field-based QA/QC for CEMS mercury analyzers via co-located reference method sampling.
- Research-grade mercury partitioning studies under variable flue gas temperature, moisture, and halogen content conditions.
FAQ
Does the ZR-D11A include a built-in cooling mechanism such as a Peltier element or refrigerant circuit?
No—it relies on externally supplied ice or chilled gel packs placed within its insulated chamber. This passive design ensures intrinsic safety in explosive atmospheres and eliminates electrical hazards near hot stacks.
Can the ZR-D11A be used for sampling other volatile metals besides mercury?
While primarily validated for mercury, its cryogenic absorption architecture may support arsenic, selenium, and cadmium vapor collection under method-developed conditions—but requires full validation per ISO 5725 and EPA SW-846 Chapter 3 protocols.
Is the unit compatible with automated sequential sampling systems?
Yes—its standardized 6-mm OD/4-mm ID PTFE inlet/outlet ports allow direct integration with programmable multi-channel valve manifolds and robotic sample changers used in high-throughput environmental labs.
What is the maximum allowable flue gas moisture content for reliable operation?
The device has been tested and verified for stable performance across the full specified range of 0–85% v/v moisture, provided condensate is removed upstream via heated line conditioning or cyclonic pre-separation.
Does Junray provide method-specific SOPs or validation reports for the ZR-D11A?
Yes—certified application notes, installation qualification (IQ) checklists, and HJ 543–2009 alignment documentation are available upon request to qualified laboratories conducting accredited mercury testing.
