SUGGESTED PROJECTS AND ACTIVITIES

Oil heating plants during transportation with intermediate heat transfer agent or with convection heating.

Oil heating plants are designed for heating oil, crude oil emulsions for transmission and feed to the plant for further treatment. Natural or associated petroleum gas, dry fuel gas, stock-tank oil can be used as fuel. This allows to use deposit resources as fuel.

Types of the offered plants:

1) Oil heating plant with the intermediate heating medium;

Oil heating plant with the intermediate heating medium is designed for heating oil, crude oil emulsion, gas or their mixtures as well as water for technological and heating purposes at oil-production enterprises. It is also applied for field domestic buildings heating. Outlet heat carrier temperature can reach 400°С. The plants are totally automated, that allows to control the operating temperature specified by a customer with accuracy of 0,5% from the given value. Automation system monitors the temperatures of the heating medium and exhaust gases, combustion air pressure, the burner flame and heating medium flow with the record.

2) Oil heating plant with combined heating;

Oil heating plant with combined heating is meant for heating oil of different viscosity and crude-oil emulsion in field oil treatment technologies as well as during its transmission. The possibility to heat the product in the heater ensures the plant usage for the heavy crude preparation as well as in oil and gas condensate stabilization technologies.

3) Oil heating plant with the convection heater;

Crude oil heats up by flowing through the heat transfer coil which warms up by the convection gases covering the outer coil surface. The gases recirculate, that improves efficiency, decreases and limits the burner flame radiation. Heat exchanger convection configuration allows to monitor the pipe wall face temperature. The heater rises the oil temperature up to the point required by a customer, at that reducing viscosity and providing conditions for is further transmission through oil-trunk pipelines.
The main advantage of the plant with the convection heater is its protection from liquid face overheat because of the pipe wall. This ensures its use for heating crude oil sensitive to overheating.

4) Wellhead oil heating plant with the separation block;

The wellhead oil heating plant is designed for the wellhead heating of oil and oil crude emulsion at their transmission within the gathering systems.

Advantages:

• Pipeline standard operation security;
• Compliance with high requirements for reliability, safety, automation and control;
• No need to use additives for oil transporting properties improvement;
• Different fuel types application;
• Closed-loop technology application to the highest degree:
  a) flue gas recirculation;
  b) constant circulation of non-toxic fluid heating medium;
• High environmental compatibility.

As an example we suggest to regard the following variant:

Oil heating system consists of:

• Exhaust gas combustion systems
• Oil heater heat exchanger

• Exhaust gas burner
• Main burner gas block
• LPG (liquefied petroleum gas) pilot burner
• Pilot burner gas block
• Air duct control means
• Air blower
• PLC based control panel
• Exhaust gas flow meter
• Air modulation system

Note
A reserve has been made to provide ports for flame indicator, pilot burner, additional gas block, and viewing port.

Gas block
The gas block will consist of flame arrester, dual pressure switch, relief gate valve, hand valve, pressure regulator and diaphragm gage with shut-off valve.

Safety
For maximum personnel and system equipment safety, the following is provided:

• Flame sensor for the system disconnection in case of flame failure
• Flame arrester to prevent flame flashback.
• Pressure relay to secure the set parameters.
• Pressure regulators to secure the required operating pressure.

Material of construction

Injector	: steel 310
Exhaust gas pipe	: steel 304
Air register	: steel 304
Flow passages	: steel 304

Control system
For completely automated operation the control panel with PLC is provided. The control panel is equipped with the audio and video alarm system for indications and messages.

The system will be equipped with the following control devices:

• Safety interlock
• Parameters control, i.e. pressure and temperature control
• PLC controlled operation with the pre-set parameters
• Indication of underheating or overheating, oil heater pressure drop, flame condition

Plant layout

TAG.NO	DESCRIPTION	QTY.
FA101	Main flame arrestor	1
FA102	Pilot flame arrestor	1
PRV101	Pressure reliev valve	1
BFV101	Main butterfly valve	2
MOV 102	Three way motorized valve	1
IT101	Ignition transformer	1
IE101	Ignition electrode	2
MS0V101	Main shutoff valve	1
PSV101	Pilot solenoid valve	1
BGLPS	B G low pressure switch	1
BGHPS	B G high pressure switch	1
APS	Air pressure switch	1
PG101	Diaphragm pressure gauge	1
OH	Heat exchanger	1
S0V101	Solenoid valve	1
-	UV flame sensor	1

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