An Overview of the Current Status of the Siemens POSTCAP Process

An Overview of the Current Status of the Siemens POSTCAP Process Results from POSTCAP pilot plant operation Michael A. Sandell Siemens Environmental S...
Author: Lester Grant
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An Overview of the Current Status of the Siemens POSTCAP Process Results from POSTCAP pilot plant operation Michael A. Sandell Siemens Environmental Systems & Services

Page 1

© Siemens 2010. All rights reserved.

Energy Sector

Siemens solutions for CO2 capture

IGCC / Pre-combustion carbon capture

Post-combustion carbon capture

“Technology units proven or ready”, integration in new build IGCC plants

“Scalable” market introduction, for new build and retrofit Steam PP

ƒ Gasification technology with multi-fuel capability

ƒ Enhancement potential for solvents, scrubbing process and for integration into the power plants

ƒ Scrubbing Technologies from oil & gas ƒ F-class LC Gas Turbine

ƒ Siemens develops process based on amino acid salt formulations

ƒ Alternative route for chemical / fuel production / SNG and hydrogen economy

ƒ Preferred solution for CCS demonstration projects

Mastering technological / contractual complexity.

Siemens Fuel Gasifier

Siemens IGCC technology applied in Puertollano (E)

Mastering Scale up from pilot to demo plant

Siemens scrubbing process test lab

Post-Combustion carbon capture plant design

Siemens solutions are ready for the implementation in the upcoming CCS demonstration projects Page 2

© Siemens 2010. All rights reserved.

Energy Sector

Capture development – “second generation process” 1st generation: amines, ammonia

2nd generation: Amino acid salt +

K O

-

R’ C

O

C H

H N R

1st generation: basic process setup Improved setup (2nd generation): Status:

• No thermodynamic solvent emissions • Not flammable • Not explosive • Odorless • No inhalation risk • Chemically Stable • Naturally Occurring

Salts have no vapor pressure

Siemens CO2 compressor solutions

Solvent slip nearly zero 90-105°C Low degradation (O2)

8.5 % pts. 40-45°C

High SOx contents possible

CO2 concentration 99% pressure 200 bar

approx. 120°C 2.7 GJ / ton CO2 captured, approx. 40% of LP steam

Solvents based on amino acid salts are economic, have low environmental impact and are easy to handle Page 3

© Siemens 2010. All rights reserved.

Energy Sector

Prevention of crystallization Crystallization behavior for different solvent concentrations

Absorption capacity ƒ A high CO2 loading of the solvent was achieved ƒ Various SOx concentrations can be safely adjusted to investigate the behavior of active AAS substance

ƒ Crystallization behavior as a function of temperature and CO2 loading was extensively studied and is well understood ƒ Several process arrangements were made in order to prevent crystallization

Crystallization effects were safely avoided Page 4

© Siemens 2010. All rights reserved.

Energy Sector

Solvent stability

Results

Components

Amino Acid Salt w/o H2O wash

VOC

not detectable

Formaldehyde

not detectable

Methylamine

not detectable

∑Nitrosamines

not detectable

Ammonia

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