Gas Treatment Unit Ensures Efficient Use of Associated Gas

Gas Treatment Unit (GTU) manufactured by the Tyumen plant Neftemash, is designed for gas treatment, reduction, flow rate measurement and outlet gas pressure maintenance at the level set for gas supply to consumers (including gas-piston and gas-turbine power stations, boiler plants, etc.). 

The GTU is a factory-made complete modular unit. It is complete with heating, ventilation, illumination and automation systems and fitted with process equipment. The process equipment's components ensure 100 percent backup. The unit includes sensors for fire alarm; gas pollution; operational capability of reduction lines; gas pressure at the inlet, outlet and at the measuring package; gas temperature at the inlet, outlet and at the measuring package; heat carrier temperature; pressure difference at separators, filters and at the measuring package; condensate level in separators, and signaling of gas breakthrough to the heat exchanger. At present, five main serial versions of GTU are manufactured.

Performance Specification
Operating fluid pressure, MPa:
- inlet        0.4-1.2
- outlet    0.3

Maximum throughput capacity, st. cu. m/hour: 500-4,600
Temperature, С:
- operating fluid at the inlet, not less than -10
- operating fluid at the outlet, not less than +5
- ambient medium: from -50 to +45
- in the unit, not less than +5

Automation network provides alarm signaling in cases of:
• gas content within the unit building exceeding the permissible value;
• fire in the unit building;
• deviation of the gas pressure in the outlet pipelines from the operating value;
• temperature drop in the unit;
• unauthorized access to the unit building;
• other signals are provided at the customer's request.

The process equipment operates as follows: gas is delivered by the inlet gas pipeline to the separators, where liquid phase and solids are removed. Then gas comes to the heat exchanger, where it is heated to definite temperature, and goes to the pipelines through the gas meter, filters and pressure regulator. A bypass line is provided for cases of repair or replacement of separating elements of the separator. Special valves for gas discharge to the flare are provided for purging of the gas pipelines during the equipment repair or inspection.

Additionally, at the customer's request, flow meters can be installed on the outlet gas pipelines, and also GTU delivery is possible with the control unit including a controller, secondary instruments and low-voltage package module.

Advantages
• GTU enables efficient use of the associated gas.
• It is equipped with all necessary instruments and automation tools, and does not require permanent servicing.
• It is compact and easy to transport and assemble.
• It is completely factory-made ("turnkey").
• It enables reduction of construction time.
• It saves expenses on preparation of the construction site and start-up period.

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