Oil storage tank heating
Maintains suitable oil temperature for storage, pumping and withdrawal.
ISO-Certified Manufacturer
ISO 9001 · 14001 · 45001Flanged
Immersion Heater
Project-configured electric heating for oil storage tanks, drums and process vessels.
Equipment OverviewMatched to your liquid.
Matched to your liquid.
Built for your vessel.
The Explosion-Proof Immersion Heater is an industrial electric heater engineered for oil storage tanks, drums and process vessels. It provides controlled heat input to support liquid warm-up, temperature maintenance and oil withdrawal in cold conditions. Flanged immersion heater assemblies are configured around the vessel connection, liquid properties and required heating duty.
XGTHERMAL can configure the heating bundle, mounting connection, terminal enclosure and control cabinet for hazardous oilfield areas. The tank-heater design can include a protective sleeve that separates the removable element from the liquid; direct-immersion and sleeved arrangements are reviewed against the project requirements.
Discuss Your Requirements
Tank & vessel heating
Liquid warm-up, holding duty and cold-weather oil withdrawal.
Fluid-matched heat load
Heating area and watt density selected for the liquid.
Vessel-matched installation
Mounting, immersion length, protection and controls configured together.
ApplicationsBuilt for oil storage tanks
Built for oil storage tanks
and process vessels.
Warm or maintain a liquid inventory at the required temperature. The heating arrangement depends on fluid properties, available liquid depth, tank geometry and operating cycle.
Heavy and waxy oil conditioning
Supports viscosity reduction before transfer, with heat load matched to the oil.
Process vessel temperature maintenance
Adds controlled heat to a liquid inventory during holding or batch operation.
Cold-region tank warm-up
Provides planned warm-up for cold liquids, accounting for insulation and heat loss.
Sump and drain drum heating
Can be evaluated for collected liquids where minimum level and sediment clearance are defined.
Engineering & ProtectionConfigured around the connection
Configured around the connection
and working liquid level.
The assembly fits into the tank or vessel through a project-selected connection. In a direct-immersion design, the element sheath contacts the liquid. In a sleeved tank heater, heat passes through a separate sleeve while the element remains isolated from the process liquid. The arrangement is confirmed before manufacture.
- Flange rating, nozzle size and wetted materials selected for the liquid and vessel pressure
- Heated length, unheated section and watt density matched to liquid level and fouling tendency
- Bundle withdrawal space and sleeve arrangement reviewed for installation and maintenance
- Flanged or threaded screw-plug connection requirements can be reviewed with local controls and site signals
- Keep the active heated length below the minimum liquid level and clear of sediment and obstructions.
- Match watt density to viscosity, fouling tendency and allowable surface temperature; limited liquid movement can increase local temperature.
PLC temperature control
Liquid-temperature feedback can be used for automatic heating adjustment and operator visibility.
SCR stepless power regulation
Power output can be adjusted smoothly to reduce thermal shock and unnecessary cycling.
Low-liquid-level interlock
Heating is inhibited below the permitted liquid level to help prevent dry firing and exposed hot surfaces.
Independent over-temperature protection
Separate high-limit protection can monitor the heating assembly, alongside electrical faults and vessel-pressure signals where required.
Technical Data & Delivery Scope
Request a Datasheet Review the details that matter.
Published values are reference information. Request the applicable model datasheet, installation instructions and certification documents before procurement.
Specifications
| Specification Parameters | Specification Details |
|---|---|
| Rated Voltage | AC 380 V, 50 Hz (customizable) |
| Rated Power | Up to 200 kW |
| Inlet/Outlet Specification | Custom mounting flange / nozzle |
| Control Mode | PLC / microcontroller / digital controller (optional) |
| Alarm Mode | Over-temperature, low liquid level, electrical faults; optional pressure / flow alarms |
| Design Pressure | 0–45 MPa |
| Control Cabinet | Explosion-proof / non-explosion-proof |
| Protection Class | IP65 |
| Explosion-Proof Grade | Exdb IIB T1~T6Gb Exdb IIC T1~T6Gb |
Standards & Certification
| Standards and Certification Area | Reference / Route | How XGTHERMAL Supports It |
|---|---|---|
| Explosion-proof design basis | IEC 60079 / GB/T 3836 | Design reference for the terminal enclosure and hazardous-area electrical details of the heater assembly. |
| EU / international Ex certification | ATEX / IECEx | Project-specific certification route can be supported when required by the destination market and final hazardous-area classification. |
| Eurasian market access | EAC / TR CU 012/2011 | Certification and technical documentation support can be coordinated for Russia, Kazakhstan and other EAEU destinations. |
| Oil & gas procurement documents | IOGP JIP33 S-723 Electrical Process Heaters | JIP33-aligned data sheets, inspection and test plans, vendor document register and technical query response can be prepared for EPC review. |
| Pressure boundary | ASME BPVC Section VIII / PED 2014/68/EU | Pressure-boundary design, material traceability and third-party review can be supported for the mounting flange, sleeve or assembly where included in project scope. |
| Electrical cabinet and machine safety | IEC 61439 / IEC 60204-1 | Control cabinet layout, component selection, wiring practice and electrical protection can be configured around project requirements. |
| Functional safety | IEC 61511 / SIL | SIL-rated safety loop design can be coordinated when independent shutdown or safety instrumented functions are specified. |
| Sour service materials | ISO 15156 / NACE MR0175 | Wetted material selection can be reviewed for H 2 S-containing fluids within the applicable standard and project scope. |
| Inspection and handover package | EN 10204 3.1, NDT reports and FAT records | Material certificates, pressure test records, non-destructive testing reports, electrical test records and factory acceptance test files can be supplied. |
| Ingress protection | IEC 60529 | IP65 / IP66 enclosure protection can be selected for outdoor oilfield stations and harsh operating environments. |
Certification availability depends on the final equipment configuration, destination market, hazardous-area classification and third-party assessment. Listed standards describe engineering and documentation support, not blanket certification for every configuration.
Supply Scope
| Name | Origin/Brand | Remarks |
|---|---|---|
| Heater Assembly | Shenyang Xinguang Electric Manufacturing Co., Ltd. | Mounting flange, bundle and protective sleeve where specified |
| Heating Element | Shenyang Xinguang Electric Manufacturing Co., Ltd. | Sheath material, heated length and surface heat load selected for the liquid |
| Control Cabinet | Shenyang Xinguang Electric Manufacturing Co., Ltd. | Explosion-proof or safe-area cabinet available |
| Electrical Components | Delixi, Chint or project-approved equivalents | PLC, circuit breaker, contactor, thyristor, relay and isolating barrier options |
| Instruments | Chuanyi, Anhui Tiankang, Beijing Tiantai or project-approved equivalents | Liquid temperature, high-limit and level instruments; pressure / flow where required |
Selection SupportFrom operating conditions
From operating conditions
to a practical equipment review.
Estimate the warm-up duty of a fixed liquid inventory, then share the conditions needed to review the complete heating arrangement.
Estimate the heating duty.
Estimate average heating power for warming a fixed liquid inventory over a specified time.
kW = mass × Cp × ΔT ÷ (3600 × hours) + heat loss
For single-phase liquid warm-up with no inflow or outflow. Excludes vessel thermal mass, evaporation and changes in specific heat. Holding duty needs a separate heat-loss assessment. Defaults are illustrative; final selection must confirm mixing, liquid level, watt density and hazardous-area requirements.
Required heating duty—
With design margin—
Temperature rise—
Liquid inventory—
What to share with our team.
Send your vessel datasheet, liquid properties and existing drawings. Final selection also considers holding heat loss, liquid movement, minimum level and allowable heating-surface temperature.
- Liquid composition, viscosity and fouling tendency
- Liquid mass or working volume and density
- Minimum and normal liquid levels
- Initial and target liquid temperatures
- Vessel design pressure and mounting connection
- Required warm-up time and holding duty
- Tank dimensions, insulation and ambient conditions
- Element or sheath surface temperature
- Hazardous-area classification
- Batch, holding or variable-level operation
- Power supply and site electrical limits
- Immersion length, sleeve requirements and removal space
- Local panel, PLC, Modbus RTU, SCADA or DCS interface
Common engineering questions.
Is a tank heater the same as an immersion heater?
Tank heater describes the application; immersion heater describes the installation. A flanged immersion heater fits through a vessel nozzle, while a screw-plug immersion heater uses a threaded connection. The appropriate mounting arrangement depends on the duty and vessel interface.
Does the heating element contact the liquid?
In a direct-immersion arrangement, the element sheath is wetted by the liquid. A sleeved tank-heater arrangement separates the removable element from the liquid through a protective sleeve. The selected arrangement must be stated in the project datasheet.
How do you select surface heat load or watt density?
Surface heat load, or watt density, depends on liquid properties, heat transfer and allowable surface temperature. Viscous, waxy or fouling-prone liquids generally need more heating area for a given duty. Sleeve resistance must also be considered where fitted.
What happens if the liquid level falls?
The heated section must remain covered during operation. A low-level interlock should interrupt heating before it becomes exposed; independent high-limit protection provides another layer of protection. Normal temperature control alone is not a substitute for these functions.
Do you supply immersion heaters from China for overseas projects?
Yes. XGTHERMAL is a China-based immersion heater manufacturer serving oil and gas projects. We support project-specific heater design, documentation and export-oriented technical communication for overseas procurement.
What certification documents can be supported?
Project documentation can be prepared around IEC 60079 / GB/T 3836 hazardous-area requirements, NDT, material certificates, FAT records and, where required, project-specific ATEX, IECEx, EAC or JIP33 alignment discussions.
Manufacturing & SupplyTank interfaces.
Tank interfaces.
A coordinated heating assembly.
Manufacturing since 1992, with engineering and supply support for industrial electric heating equipment.
Review Our CapabilitiesReview the equipment before manufacture.
Define the heating bundle, vessel connection, terminal enclosure, control cabinet and agreed documentation as one project supply scope.
- Direct-immersion or protective-sleeve arrangement.
- Materials, connection rating and bundle withdrawal space.
- Temperature control, low-level interlock and independent high-limit protection.
- Material certificates, NDT, FAT and destination-market documentation as specified.
Have a specification?
Let’s review it together.
Share your liquid conditions, vessel drawings and delivery requirements.