PSA-CO and equipments
Technical brief introduction:
Carbon monoxide is an important basic chemistry raw material. It
can be used to make acetic acid, acetic anhydride, oxalate,
ethylene glycol, oxalic acid, dimethyl formamide, dimethyl
carbonate, formic acid and phosgene synthesis (TDI, MDI )etc. The
pure carbon monoxide needed by the phosgene synthesis can be
separated and extracted from all kinds of gas mixtures with carbon
monoxide. The raw gases that can be used to separate carbon
monoxide in the industrial purposes includes: natural gas,
synthesis gas turned from petroleum, water gas, semi-water gas,
tail gas from steel, calcium carbide plant and yellow phosphorus
plant etc.
The PSA carbon monoxide separation technology is an international
emerging technology. The Peking University Pioneer Company has
developed the efficient sorbent PU-1, which is better capacity of
adsorption and selectivity for carbon monoxide. It has ever gained
the patents by China, the United States and Canada. According to
the characteristics of this sorbent, the successfully developed,
international advanced, high efficient and low wasting PSA carbon
monoxide separation technology has solved the problem separating
high-purity carbon monoxide from the raw gases with high content of
nitrogen or methane. Many large sets carbon monoxide separating
devices have been designed. It brings users enormous economic
benefit and has been highly praised. This technology has awarded
the 2005 Ten science and technology development of Chinese
universities” and the second prize of 2006 national technology
invention”.
Performance index:
1）Product scale: 10～30000 Nm3/h
2）product purity: normal designing valve≥98.5%, purity can be
flexibly adjusted. The highest being 99.99%
3）yield of carbon monoxide: when the purity is, the yield is 75～95%
4）equipment consumption: when the product yield is the same as the
purity, the consumption is lower 30% than other cosmetic adsorption
process and the dosage of the raw gas saves above 50%.
Technology character and superiority:
1. The feed gas has good adaptability.
Being adopted the efficient carbon monoxide sorbent PU-1, high
carbon monoxide with high purity can be separated from feed gases
with high content of nitrogen or methane.
2. The cost of carbon monoxide in products is low.
High plant process, high product yield, low consumption of
reactants, low charge of matching equipment and low production
cost.
3. The carbon monoxide gets high quality.
The carbon monoxide of products has high purity (the highest being
99.99%). The impurity content is low. It can bring obvious economic
benefit.
4. Reform the users’ original equipment.
Under the premise of not increasing the operation costs, it can
greatly improve the outputs and qualities of the carbon monoxide of
the domestic original adsorption plant.
PSA carbon monoxide separation technological flow chart:
