---
title: "Electric Circulation Heater for Crude Oil"
url: "https://xgthermal.com/products/crude-oil-circulation-heater/"
language: "en"
---

# Electric Circulation Heater for Crude Oil

Project-specific electric heating for continuous-flow crude oil service, viscosity reduction and flow assurance.

Equipment Overview

## Built around your fluid. Configured to your specification.

An industrial electric circulation heater for crude oil, produced fluid and oil-water mixtures in gathering pipelines, transfer lines, unloading loops and recirculation systems.

We review your operating conditions and equipment requirements, then coordinate the heater body, heating elements, process interfaces, instruments and controls. Explosion-proof configurations are reviewed against the site’s hazardous-area requirements.

[Discuss Your Requirements](https://xgthermal.com/contact.html)

![Crude oil circulation heater body with flanged process connections](https://xgthermal.com/images/products/product-details/product3-detail-1.webp)

Heater body shown. Final configuration depends on the project specification.

### Continuous-flow heating

Once-through duties and recirculation loops.

### Fluid-matched heat load

Surface temperature and watt density considered together.

### Heater or complete skid

Equipment, piping and controls within the agreed scope.

Applications & Operating Conditions

## Keep crude oil moving through demanding conditions.

Heating duty, viscosity, wax behavior and allowable surface temperature all shape the equipment design.

### Gathering & transfer lines

Controlled heating for crude oil moving between well pads, gathering stations and transfer facilities.

### Viscosity & wax management

Temperature conditioning for heavy or waxy crude, with surface heat load selected around fluid properties.

### Cold-region operation

Heating duties for winter start-up, exposed piping and changing inlet temperatures.

### Station retrofits

Heater bodies or integrated skids configured around existing plant interfaces and available space.

Engineering & Integration

## The right heating path. The right plant interfaces.

Cold crude can increase pressure drop and pump load; localized overheating can increase coking and fouling risk. Heating duty, residence time and surface heat load are considered together rather than sizing on installed kW alone.

Single-body, double-body, multi-body and skid-mounted arrangements can be reviewed around installation space and duty. Process nozzles, flanges, drains, vents, insulation and maintenance access are coordinated with your design.

-   Wetted materials and pressure rating matched to the medium.
-   Low surface heat-load options for waxy or coking-sensitive service.
-   Local panel, PLC, Modbus RTU, SCADA or DCS interfaces.
-   Approval drawings and technical deviations reviewed before manufacture.

01

### PLC temperature control

Outlet-temperature regulation with local and remote operating interfaces.

02

### SCR power regulation

Stepless power control configured around heating duty and turndown.

03

### Flow protection

Flow / no-flow interlocks matched to the agreed process requirements.

04

### Independent protection

Over-temperature and over-pressure protection coordinated with station shutdown requirements.

Technical Data & Delivery Scope

## Review the details that matter.

Published options provide a starting point. Final values and certification requirements are confirmed for your project.

[Request a Datasheet](https://xgthermal.com/contact.html)

### Specifications

| Specification Parameters | Specification Details |
| --- | --- |
| Rated Voltage | 380 / 400 / 415 / 480 / 690 V, 50/60 Hz available by project |
| Rated Power | Project-dependent; configurable up to 3000 kW where applicable |
| Inlet/Outlet Specification | Project-specific flange / nozzle sizes; ANSI / ASME flange rating options available |
| Control Mode | PLC, single-chip microcomputer or digital display meter options |
| Alarm Mode | Over-temperature, over-pressure, low flow, low liquid level and electrical fault alarm options |
| Design Pressure | Project-dependent; configurable up to 45 MPa subject to engineering review |
| Control Cabinet | Explosion-proof / non-explosion-proof, selected by area classification |
| 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 explosion-proof heater body, terminal box and hazardous-area electrical details. |
| 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 design, material traceability, welding records and third-party review can be supported when the heater body is within project pressure-equipment 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 | Material selection can be reviewed for H 2 S or sour crude service when required by the process medium. |
| 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 Body | Shenyang Xinguang Electric Manufacturing Co., Ltd. | Pressure boundary and process connection customized by project |
| Heating Element | Shenyang Xinguang Electric Manufacturing Co., Ltd. | Surface heat load selected by crude oil property and duty |
| 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 | Temperature, pressure, flow and level instruments configured by process design |

Selection Support

## From operating conditions to a practical equipment review.

Prepare a preliminary duty estimate, then share the information needed to review the complete heating arrangement.

### Estimate the heating duty.

Use a heat-balance estimate to prepare your operating conditions for technical review.

kW = kg/h × Cp × ΔT ÷ 3600 ÷ efficiency

For steady-state sensible heating of a flowing liquid, without phase change. Use fluid-specific Cp and your project efficiency and margin; defaults are illustrative. This estimate excludes start-up heating and separate piping or tank losses. Final selection also considers viscosity, fouling, surface heat load, pressure drop and hazardous-area requirements.

Required heating duty**—**

With design margin**—**

Temperature rise**—**

Normalized mass flow**—**

### What to share with our team.

Send your datasheet, specification or existing drawings. We can provide a project-specific datasheet or preliminary selection notes.

-   Medium: crude oil, produced fluid or oil-water mixture
-   Flow rate and operating range
-   Minimum and maximum flow
-   Inlet and target outlet temperature
-   Design pressure and flange standard
-   Allowable pressure drop
-   Viscosity, wax content and pour point
-   Element or sheath surface temperature
-   Hazardous-area classification
-   Start-up and turndown conditions
-   Power supply and site electrical limits
-   Heater body or skid-mounted package
-   Local panel, PLC, Modbus RTU, SCADA or DCS interface

[Send Your Specification](https://xgthermal.com/contact.html)

### Common engineering questions.

Is a circulation heater the same as an in-line heater?

In many procurement documents, circulation heater, in-line heater and inline electric process heater may describe similar continuous-flow heating duties. Final naming depends on piping layout, recirculation loop design and project specification.

Can this heater be used for crude oil and produced fluid?

Yes. The heater can be engineered for crude oil, produced fluid and oil-water mixture heating when the medium properties, water cut, viscosity and fouling tendency are reviewed during sizing.

How do you select surface heat load or watt density?

Surface heat load, often called watt density, is selected according to crude oil properties and allowable wall temperature. Heavy crude, waxy crude or fouling-prone service usually requires a lower watt density design.

Can it be supplied as a skid-mounted package?

Yes. XGTHERMAL can supply the heater body alone or a skid-mounted package with process piping, valves, instruments, insulation, junction boxes and control cabinet integration.

Do you supply crude oil circulation heaters from China for overseas projects?

Yes. XGTHERMAL is a China-based manufacturer of explosion-proof electric heaters and skid-mounted heating systems for oil and gas projects. We support project-specific design, documentation and export-oriented technical communication.

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 & Project Experience

## A manufacturer you can review before you commit.

Manufacturing since 1992, with 120+ projects delivered and longstanding supply relationships with CNPC, Sinopec and PipeChina.

[Review Our Capabilities](https://xgthermal.com/about.html)

### Documentation follows the equipment.

Agree the inspection and handover scope during technical review: material certificates, pressure-test and NDT records, electrical testing, FAT and final documentation as specified.