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When using the technology of condensate stabilization by degassing, number of stages is selected based on the content of low-boiling hydrocarbons in the condensate: the higher it is, the greater the number of stages is required. Usually, this technology of stabilization process is used in fields with low condensate factor.

When using the technology of condensate stabilization by fractionation (most often in 2 or 3 columns) it is possible, in addition to stabilization gases and stable condensate, to obtain also propane-butane fraction (or propane and butane). In modern plants a combination of separation and fractionation processes is usually used, which makes it possible to increase process flexibility and reduce energy consumption.

Design features

Unit is installed outdoors or can be made as fully prefabricate block-modular device, tested and adjusted to operating parameters. Condensate Stabilization Unit is a set of blocks of maximum prefabrication level, supplied by rail, road and other types of transport.

Scope and design of each specific unit is determined based on Client’s requirements.

Advantages

• Reliability
• Column feed heat exchanger with stainless steel tubes.
• Automatic flame and fuel gas control system.
• Efficiency
• Operating range 10-100% (when using valve discs)
• Possibility of automatic control of deluge stream

Possible options

• Block-modular design
• Technological frames of standard transport dimensions
• Possibility of placing contactor column on the same skid with regenerator
• Possibility of selection between pneumatic and electric drive of the main control elements

Scope of Equipment

Scope of the unit depends on the used method of gas condensate stabilization. The main equipment includes:

• shell-and-tube heat exchangers;
• absorption-stripping columns (ASC);
• furnace heating equipment;
• vessel separation equipment.

Process flow diagram of gas condensate stabilization unit with 2-stage degassing includes:

• butterfly valves;
• vessel separation equipment of 1st and 2nd degassing stages;
• product storage vessel.

Process flow diagram of gas condensate stabilization unit with 2 fractionation columns includes condensate degassing in the separator and separation of the separated liquid from separator into two streams, using the following equipment:

• vessel separation equipment;
• heat exchanger;
• absorption stripping column (ASC);
• furnace heating equipment;
• stabilizer;
• condenser cooler.

Process flow diagram of gas condensate stabilization unit with supply of stripping gas includes:

• capacitive separation equipment;
• recuperative heat exchangers;
• absorption stripping column (ASC);
• furnace heating equipment;
• stabilizer;
• condenser cooler.