Q1: Why is a skid-mounted modular design preferred for land-based LNG/LPG bunkering terminals over traditional elevated flares?

A: Space is typically restricted at land-based bunkering stations and coastal terminal facilities. Zexuan’s skid-mounted design integrates all liquid separation, seal loops, control valves, and structures onto a unified, compact structural footprint. Because the unit undergoes complete Factory Acceptance Testing (FAT) before shipment, it eliminates the need for extensive on-site structural welding, high-altitude crane rental, and lengthy civil engineering, allowing the terrestrial terminal to begin operations much faster.

Q2: How does the Zexuan system handle the extreme cryogenic thermal shocks from cold LNG vapor (-162°C)?

A: Sudden venting of cryogenic LNG boil-off gas (BOG) from storage tanks can cause immediate structural cracking or rapid embrittlement in standard carbon steel. Zexuan builds all low-temperature process lines and liquid collection blocks out of specialized cryogenic-grade SS304/SS316L stainless steel, while utilizing premium Inconel 625 investment castings for the hot flare tip zones. This specialized metallurgical grading accommodates extreme thermal cycling without mechanical fatigue.

Q3: Can this flare guarantee 100% smokeless operation when switching between LNG and heavy LPG (Propane/Butane) streams?

A: Yes. LPG relief streams feature much higher carbon-to-hydrogen ratios than pure methane (LNG), which naturally produces heavy black smoke if non-assisted. To solve this, Zexuan incorporates an automated Air-Assisted configuration or a multi-stage high-pressure staging matrix. The integrated flow indicators feed real-time venting data to the PLC control system, automatically adjusting the VFD air blower or valve sequence to optimize turbulence and match oxygen demands, achieving 100% smokeless combustion.

Q4: What safety interlocks are implemented on the skid to prevent flashbacks or explosions near terminal pipeline networks?

A: Safety is the absolute priority in proximity to volatile storage and transfer zones. The Zexuan skid features a redundant multi-layered defense matrix: an integrated liquid seal drum to physically isolate the flame zone, high-integrity bi-directional detonation flame arrestors (DFAs), continuous velocity or buoyancy molecular seals, and real-time nitrogen/purge-gas automated flushing lines. This ensures the piping network maintains stable positive pressure and prevents any back-leakage of atmospheric oxygen into the terminal infrastructure.

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