Product Description
Manufactured within our specialized petrochemical equipment workshops in Jingjiang, our Gas Oil Hydrotreating Heater is a high-efficiency fired heater engineered to heat vacuum gas oil (VGO), coker gas oil (CGO), and deasphalted oil (DAO) mixed with treat gas before entering hydrodesulfurization and hydrocracking guard reactors. Drawing upon 26 years of heavy fabrication experience as an approved supplier to Sinopec and CNPC, we build each Gas Oil Hydrotreating Heater to optimize thermal energy input that elevates feedstock crackability for downstream fluid catalytic cracking (FCC) and hydrocracking complexes. By maintaining uniform radiant heat flux distribution and balanced multi-pass hydraulics, our heaters prevent heavy oil thermal degradation and tube fouling, delivering thermal efficiencies up to 92% and providing refiners with a durable, continuous-duty heating solution that enhances FCC conversion yields and clean fuel production.
Applications
VGO Hydrotreating Units (VHT): Preheating straight-run vacuum gas oil mixed with treat gas from 220°C to 340°C–380°C to eliminate sulfur, nitrogen, and organometallic poisons.
FCC Feed Pretreatment Complexes: Upgrading refractory feeds (coker gas oil, DAO, light cycle oil) to improve catalyst selectivity and lower regenerator flue gas SOx emissions.
Hydrocracker Feed Preheating: Elevating heavy distillates to reaction initiation temperatures while saturating polyaromatics.
Refinery Revamp & Decoking Extensions: Upgrading outdated convection banks and radiant coils to extend operational run-lengths to 48 months between turnaround cleaning cycles.
Technical Specifications
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Design Standards |
API 560, ASME Section VIII Div. 1, ASME B31.3, Class A2 Pressure Vessel License |
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Structural Architecture |
Cabin-style box fired heater or vertical cylindrical heater with horizontal or vertical tube passes |
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Thermal Duty Capacity |
5 MW to 45 MW per unit |
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Design Operating Pressure |
6.0 MPa to 14.0 MPa (Sized to high-pressure VGO hydrotreating loops) |
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Fluid Outlet Temperature |
330°C to 395°C; Radiant tube skin design temperature up to 590°C |
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Process Tube Metallurgy |
ASTM A335 P11, P22, P91, and stabilized austenitic stainless steel (TP321H, TP347H) |
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Convection Tube Banks |
Bare shock rows followed by high-frequency resistance-welded solid or serrated finned tubes (09CrCuSb / ASTM A106-B) |
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Combustion Equipment |
Floor-mounted ultra-low-NOx staged gas/oil burners engineered for uniform heat release |
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Thermal Efficiency |
91% – 93% (Integrated with convection coil preheaters and combustion air preheating systems) |
Customization Capabilities
Feed-Specific Alloy Optimization: Customizing coil metallurgy (Cr-Mo alloys or stabilized TP347H) based on feedstock sulfur, nitrogen, and heavy metal concentrations in compliance with API RP 941.
Hydraulic Pass Balancing: Designing symmetric multi-pass coil arrangements with tailored fluid velocities to ensure uniform residence times and prevent two-phase flow slugging.
Modular Pre-Assembled Construction: Fabricating convection boxes, air preheaters, and radiant wall panels with installed refractory lining to minimize field construction time.
Integrated Heat Recovery Schemes: Incorporating convection preheating coils for process feed, wash water, boiler feed water, or combustion air to maximize thermal efficiency.
Zero MOQ Flexibility: Fabricating custom single-heater packages for revamps or complete multiple-heater setups for greenfield refinery blocks.
Quality Control
Certified Quality Standards: Certified under ASME "U" and "S" stamps, ISO 9001:2015, ISO 14001:2015, and ISO 3834-2 International Welding Quality System.
Component-Level QR Code Traceability: Every alloy pipe spool, forged 180° return bend, and structural component is labeled with a serialized QR code linked directly to mill test reports and inspection records.
100% Comprehensive Non-Destructive Testing: 100% Radiographic Testing (RT) / Ultrasonic Testing (UT), 100% Positive Material Identification (PMI), and hydrostatic pressure testing at 1.5x design pressure before dispatch.
Third-Party Inspection Coordination: Full facilitation of customer audits and third-party inspections by BV, SGS, DNV, or TÜV at all critical hold points.
Export-Grade Heavy Packaging: Professional packaging using heavy steel transport cradles, internal pipe bracing, desiccants, and weatherproof vacuum-barrier wraps for ocean transit.
FAQ
Q: How do you design coils to prevent coking when processing high-viscosity VGO and DAO?
A: We maintain optimal fluid velocities across all passes to ensure high shear rates at the tube wall, while spacing burners to eliminate localized heat flux peaks that cause thermal cracking and coke formation.
Q: What is the typical fabrication lead time for a custom Gas Oil Hydrotreating Heater?
A: The typical production duration is 4 to 5 months following technical drawing sign-off and material procurement. Standard replacement coil sets can be delivered in approximately 3 months.
Q: What warranty coverage do you provide for international deliveries?
A: We provide an 18-month warranty from site arrival or 12 months from commercial operation (whichever comes first), backed by responsive technical engineering support.
Q: What payment terms and currencies do you support for international contracts?
A: We support EXW and FOB shipping terms. Our standard commercial milestones are 30% advance deposit, 40% manufacturing milestone payment, and 30% balance prior to factory dispatch, payable in USD, EUR, or RMB.
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