What type of compressor is used for natural gas?
There are two main types of natural gas compressors used for industrial purposes — reciprocating and screw compressors. These two types of natural gas compressors work in different ways to compress the gas.
What is pulsation in reciprocating compressor?
Pressure variations resulting from the oscillatory flow patterns found in positive-displacement machinery, especially reciprocating compressors, are referred to as “pulsations.” Found in both liquid- and gas-handling systems, pulsations are a common phenomenon in the chemical processing industries (CPI).
What is a pulsation bottle on a compressor?
Product Description. A Pulsation Dampener is a device used to reduce or eliminate pressure and flow modulations in a piping system which are produced by reciprocating pumps or compressors.
What is a pulsation bottle?
Pulsation vessels (pulsation bottles) The pulsation flow to the piping creates the pulsation pressure, which produces the pulsation force to shake the piping system. A peak-to-peak pulsation pressure is needed to push the peak-to-peak volumetric pulsation flowing through the piping.
Can you use an air compressor to compress natural gas?
An air compressor is designed to compress AIR, not natural gas. You cannot safely use an air compressor in natural gas service. The main function of the compressor is to compress the gas like air, hydrogen, nitrogen, refrigerant etc. The compressor compresses the gas and increases its pressure.
How does a CNG compressor work?
Natural Gas Compressors work by mechanically increasing gas pressure in stages (or steps) until it reaches the desired delivery point. The starting pressure and the desired ending pressure will determine how many stages a compressor will have.
What are the two types of pulsation dampeners?
Pulsation Dampeners There are two basic types of pulsation damper that are commonly used: surge volumes and volume-choke-volume acoustic filters.
Which pumps have pulsating flow?
Pump flow pulsation occurs when there is rapid uncontrolled acceleration and deceleration of energy. This energy is usually slugs of liquid moving and can be designated by frequency and pressure amplitude. In peristaltic pumps, pulsation is caused as fluid enters the head and becomes trapped between two rollers.
How do I choose a pulsation dampener?
Specifications for pulsation dampeners include maximum pressure, capacity, inlet size, and inlet type. Many suppliers specify maximum pressure in pounds per square inch (psi) and capacity in cubic inches (in3). Inlet size is usually expressed in inches (in). There are several inlet types for pulsation dampeners.
What is the purpose of a pulsation dampener?
The pulsation dampener serves to reduce pulsation produced in operation and to assure stable discharge flow and pressure.
How is natural gas pressurized?
Compressor Stations. Natural gas is highly pressurized as it travels through a pipeline. To ensure the natural gas remains pressurized, it must be compressed periodically along the pipeline. This is accomplished by using compressor stations where gas is compressed either by a turbine, a motor or an engine.
What is CNG booster compressor?
The “B” series compressor uses hydraulic pumping elements, making it suitable to work with a very wide range of suction pressure without a pressure regulation valve. It is particularly suited for trailer unloading at daughter stations (booster)
Is there a basic understanding of pulsation and vibration in reciprocating compressors?
ABSTRACT This paper is intended to provide a basic understanding of pulsation and vibration in reciprocating compressor installations. Common terminology used in acoustical and mechanical analysis will also be presented. www.woodgroup.com/VDN Pulsation/Vibration Beta Machinery Analysis 2 403-245-5666 1.0 Vibration
How much pressure does a pulsation bottle reduce?
For instance, if the volume of the pulsation bottle is 7 times the total cylinder displacement, pulsation is roughly attenuated to around 0.125 (1/8) times the original value. Thus, the bottle achieves roughly an eightfold reduction of the potential pulsation pressure.
What is a pulsation control bottle?
Pulsation control bottles (right) contain choke tubes, baffles and volume chambers. This will filter and dampen pulsation and reduce forces to acceptable levels.
What is included in the pulsation study for high speed compressors?
Pulsation study, mechanical review and frequency avoidance analysis, forced response analysis (when required); per API 618, API 688 and GMRC High-Speed Compressor Guideline. For compressors below 750 RPM the study is conducted per API 618 requirements, the pulsation and vibration standard for slow-speed compressors.