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Professional ASME- certifies Oil&Gas Equipments Supply

CN | EN

Professional ASME- certifies Oil&Gas Equipments Supply

Tel：+86-18337966423

Email:sales@lrcoilequipment.com

CN | EN

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ANCILLARY EQUIPMENT

Compressor

Mechanical devices which reduce the volume of a air/gas in order to increase its pressure are known as compressor equipment. They are used during the initial treatment of crude oil before the gas is transported through pipelines, supply chain, to the final consumers. In the same vein, the increase in pressure can be carried out along the pipelines, at processing plants field nodes, or the inlets of the pipelines in order to reduce Methane and VOC.

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Description

Parameters

　　Specification
　　Types of compressors used in the oil and gas industry:
　　Two basic types of compressors are employed in the natural gas industry, and these are the rotary and reciprocating compressors.
　　1. Rotary Compresors:
　　Rotary compressors are of two major types and these are the rotary blower and centrifugal compressor. Depending on the type, they may be a single-stage or multi-stage compressor, and are driven by large gas turbines. Unlike reciprocating compressors, centrifugal compressors are often reserved for the largest oil and gas operations and require thousands of horsepower.
　　Generally, they have a wet or dry seal configuration and some of their components include:
　　A housing with built-in flow passages
　　A rotating shaft for mounting the impeller
　　Seals and bearings that help to trap the natural gas from leaking
　　For its mode of operation, a rotary’s mechanical impellers or vanes enable it to draw the low-pressure natural gas and expel the high-pressure natural gas which in turn increases the pressure.
　　In the same vein, the circular movement of the impeller or its centrifugal force increases the velocity of the gas which is then transported to a duct section. The latter converts the velocity energy to static pressure.
　　It is also worthy to note that the pressure ratio of rotary compressors is fixed which is why the pressure output is always constant.
　　Schematic Diagram

2. Reciprocating Compressor:

A reciprocating air compressor system operates through a crankshaft-driven piston and cylinder, which is used to compress the air. There are both single- and two-stage designs. In a single-stage, a solitary reciprocating piston works by drawing air into the cylinder. In a single stroke, this creates the compression, which is then sent to a storage tank. They are the most commonly used in natural gas compressors because they can handle all volume capacities and pressures.

In comparison with rotary compressors, they have a varying volumetric flow-rate output which could still be limited.

Reciprocating compressors can either be driven using gas, electric motors or steam turbine engines instead of the general electric motors of the rotator machines.

Schematic Diagram

Applications of compressor equipment in the oil and gas industry:

Petroleum refining —By boosting the pressure of processed gas, a catalytic reaction used in the refining process will occur.

Pipeline transportation—Utilizing gas and compressed air is common in transporting gas through pipelines. Pressures need to be maintained, which requires some form of compressor system to work correctly.

Gas re-injection —Increasing gas pressures and injecting oil layers can help promote the recovery of crude oil.

Petrochemical synthesis— Petrochemicals such as methanol, ammonia, ethylene, ethylene glycol and urea often rely on a specific pressurization of air and gas in the manufacturing processes.