Basic Info.
- Standard: Chinese National Standard
- Product: LNG
- Load Variation of Liquefied Unit: 75-105%
- Specification: As customer required
Product Description
The technique includes expander process, MRC mixed cold process, etc.
Natural gas pre-treatment and purification system including:
1. Desulphurization decarbonization system
Process: (MDEA+MEA) mixed method
(MDEA+ activator) MDEA method
2. Dehydrating system
Dehydration by using 4A molecular sieve
Process by using three towers (or two towers): less regenerative gas is needed; more stable in operation
Molecular sieve dryer: it is designed in accordance with GB150 and tested by fatigue analysis
3. Mercury removal system:
The sulfur-loaded activated carbon is used to adsorb mercury, which can be used for 3-5 years. It is one tower or two towers, no need for regeneration. A filter is set behind the mercury removal system.
4. Aromatic hydrocarbon and heavy hydrocarbon removal system
From heavy hydrocarbon separator in the cold box, the heavy hydricarbon is separated and then adsorbed by scrubbing solution. After that, it goes out from tower bottom, gets separated, and at last gets stored in the storage tank.
Main processes/methods used for natural gas liquefaction by LNG plant:
1) Expansion refrigeration circulation
Nitrogen methane expansion or nitrogen double expansion with Freon as pretreatment.
2) Single mixed refrigerant circulation
It is divided into single stage throttling and multi stages throttling.
3) Multi-refrigerant circulation
Mixed refrigerant circulation with propane as pretreatment; Multi mixed refrigerant circulation with propane as pretreatment and mixed refrigerant circulation by nitrogen expansion for super cooling.
Company Profile
Suzhou Doer Gas & Chemical Equipment Co.,Ltd. is a high-tech enterprise, whose businesscovers R&D, design, manufacture, installation, complete engineering and industrial servicesof cryogenic equipment. Doer's total factoryarea is 135,000m² and the company has morethan 600 employees, including over 90 designand research & development professionals. Dedicated to becoming a leader in the field ofcryogenic liquid storage and transportation, DOER strives to provide clients with one-stopprofessional services.
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