Abu Dhabi Gas Liquefaction Company Ltd Job Training Mechanical Technician Course Module 9 Compressors
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- Figure 5.16
- 780psi from ADMA 75psi from ADMA 35psi from ADMA Atmospheric from ADMA
- Figure 5.17
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The two booster compressors are known as the North and South Booster
Compressors—they are both the same. Because they have only one suction and one discharge they are called single-stage compressors by process personnel—they have a single compressor process stage. Mechanically they are multi-stage compressors as they have more than one impeller. The impellers are mounted back-to-back with a central volute and discharge. Casings are horizontally-split. They are driven by steam turbines. Figure 5.16 shows one of the booster compressors. Figure 5.15: Booster and Feed-gas Compressor Layout 0 psig Process stages 2 & 3 in one casing 230psi from ADMA 35psig 230psig 780psig Train I Train II North booster compressor South booster compressor Train II feed gas compressor Train I feed gas compressor Process stage 4 in separate casing Side streams from ADMA 75psig 780psi from ADMA 75psi from ADMA 35psi from ADMA Atmospheric from ADMA Process stage 1 Personnel & Training Division Job Training—Mechanical Technician Compressors/Rev. 0.0 Page 58 of 90 Figure 5.17 shows the steam turbine driver for the booster compressor. Figure 5.17: Steam Turbine Driver (Tag# 26-KT-101 and 201) Figure 5.16: Booster Compressor (Tag# 26-K-101 and 201) Personnel & Training Division Job Training—Mechanical Technician Compressors/Rev. 0.0 Page 59 of 90 Similar feed-gas compressors are located in Trains I and II. They are called three- stage compressors by process personnel because they have one main intake and two side-stream intakes. On the plant, compression of the feed gas is described as going through a total of four stages: • stage one in the booster compressor • stages two, three and four in the feed-gas compressor Each feed-gas compressor has two casings. The first two compressor process stages are housed in a horizontally-split, low-pressure casing. Impellers are mounted back- to-back, similar to the booster compressors. The third stage is housed in a vertically- split, high-pressure barrel casing. Impellers for all stages are mounted on the same shaft and driven by the same steam turbine. Download 0.5 Mb. Do'stlaringiz bilan baham: 
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