Audited Supplier
Installation and Commission Guidance
12 Month
New
Automatic
0
Biological Treatment
Chemical Method
Biogas, Landfill Gas,
Explosion-Proof Certification
Yes
Fairyland
Standard Container
Customized
China
Product Description
Principle:
Utilizing the chemical reaction between CO2 and solvent to form a rich liquid, then the rich liquid enters the flash tower and desorption tower for heating and decomposing CO2, and the absorption and desorption alternate to achieve the separation of CO2 and the recycling of the solution. The widely used method in industry is the amine method for decarburization, and its main reaction process is as follows:
Process:
After desulfurization and compression, biogas enters the biogas absorption tower after being dusted and oil-removed and is fully counter-currently absorbed by lean liquid and semi-lean liquid. Most of the CO2 gas in the raw gas is absorbed, and the purified gas without CO2 is cooled and dehydrated at the top of the tower to meet the relevant standards for natural gas. The impure purified gas is returned to the inlet of the compression unit.
The amine solution absorbs enough CO2 from the raw gas to become a rich absorbent, which enters the top of the flash tower for spray flashing, and part of the CO2 is released from the rich absorbent. The liquid after flashing part of the CO2 in the flash tower is called semi-lean liquid. After being pressurized by a semi-lean liquid pump, a part of it is sent to the middle of the absorption tower for recycling absorption, and the other part is heated and regenerated in the regeneration tower after being exchanged heat.
Products Quality: Meet different natural gas standards, the main standard indicators are listed as follows:
CH4 yield: > 96%
Main equipment:
biogas compressor (optional, if there is free steam, atmospheric process can be chosen), absorption tower, regeneration tower, flash tower (optional), heat exchange system, amine solution and circulation pump, natural gas dehydration equipment, instruments.
Characters:
Utilizing the chemical reaction between CO2 and solvent to form a rich liquid, then the rich liquid enters the flash tower and desorption tower for heating and decomposing CO2, and the absorption and desorption alternate to achieve the separation of CO2 and the recycling of the solution. The widely used method in industry is the amine method for decarburization, and its main reaction process is as follows:
Process:
After desulfurization and compression, biogas enters the biogas absorption tower after being dusted and oil-removed and is fully counter-currently absorbed by lean liquid and semi-lean liquid. Most of the CO2 gas in the raw gas is absorbed, and the purified gas without CO2 is cooled and dehydrated at the top of the tower to meet the relevant standards for natural gas. The impure purified gas is returned to the inlet of the compression unit.
The amine solution absorbs enough CO2 from the raw gas to become a rich absorbent, which enters the top of the flash tower for spray flashing, and part of the CO2 is released from the rich absorbent. The liquid after flashing part of the CO2 in the flash tower is called semi-lean liquid. After being pressurized by a semi-lean liquid pump, a part of it is sent to the middle of the absorption tower for recycling absorption, and the other part is heated and regenerated in the regeneration tower after being exchanged heat.
Products Quality: Meet different natural gas standards, the main standard indicators are listed as follows:
| Item | Parameters | ||
| Standard Code | GB 17820 Level 1 | GB 17820 Level 2 | GB 18047 |
| Higher Calorific Value /(MJ/m3) | ≥31.4 | ≥31.4 | ≥31.4 |
| Total Sulfur /(mg/m3) | ≤20 | ≤100 | ≤100 |
| H2S/(mg/m3) | ≤6 | ≤20 | ≤20 |
| CO2 mol:mol /(%) | ≤3.0 | ≤4.0 | ≤4.0 |
| O2 mol:mol /(%) | / | / | ≤0.5 |
| Remark: The standard reference conditions for gas volume are 101.325kPa and 20ºC. | |||
Main equipment:
biogas compressor (optional, if there is free steam, atmospheric process can be chosen), absorption tower, regeneration tower, flash tower (optional), heat exchange system, amine solution and circulation pump, natural gas dehydration equipment, instruments.
Characters:
- high quality of product gas
- Large gas treatment volume
- The regeneration and recycling operation of the absorbent is more complicated
Applications:
Project:Chongqing Biogas Purification Project
Location: Chongqing
Capacity: 10000/5000 Nm3/h
Technology: BD-II & Amine Scrubbing
CH4 yield: >95%
Operation: Since 2020
- biogas gas has a large volume and stable flow rate
- There is free or cheap steam
Project:Chongqing Biogas Purification Project
Location: Chongqing
Capacity: 10000/5000 Nm3/h
Technology: BD-II & Amine Scrubbing
CH4 yield: >95%
Operation: Since 2020
