Post on 31-Jan-2018
Methanol and DME Production from Thermal Chemical Conversion of Biomass
China-EU workshop on biofuel, Nov. 4-5, 2004, Beijing
Dr. Dr. JieJie CHANGCHANG
Biomass Synthetic Fuel LaboratoryBiomass Synthetic Fuel LaboratoryGuangzhou Institute of Energy ConversionGuangzhou Institute of Energy ConversionChinese Academy of SciencesChinese Academy of Scienceschangjiechangjie@ms.@ms.giecgiec.ac..ac.cncnhttp://www.http://www.giecgiec.ac..ac.cncn
Outline
1. Introduction2. Usage of Methanol and DME3. Production from Biomass4. Conclusion5. Acknowledgment
Introduction of Biomass Synthetic Fuel Lab
Gasification of BiomassHydrogen Production From BiomassCleaning up and reforming of biomass derived syngasSynthesis of Methanol and DMENovel technologies for liquid fuel production (bio-diesel production via lipase, catalytic cracking of waste tire and plastic under vacuum)
Patents and Publications in BTL
5 patents24 journal papers (include Fuel, Energy & Fuels, Biomass & Bioenergy, Bioresource Technology, etc.)18 conference papers
President of Chinese Academy of Sciences, Dr. Yongxiang Lu Visited our Lab. Oct, 2003
Biomass resources-energy Cycle
Outline
1. Introduction2. Usage of Methanol and DME3. Production from Biomass4. Conclusion5. Acknowledgment
Usage of DME and Metanol
DME (dimethyl ether) CH3OCH3
Substitute of LPG for householdFuel for turbineSubstitute of diesel
Methanol CH3OHSubstitute of gasoline
Properties of DME
Formular CH3OCH3
Explosion limit /%,in air 3.4~17
Molecular Weight 46.07
Ignition Temp./°C 235
Boiling Point /°C -24.9
Vaporization heat /kJ •kg-1
410(-20°C)
Melting Temp. /°C -138.5
Lower heating value / MJ •kg-1 28.4
Vapor pressure /MPa
0.51(20°C) Flash point -41°C
Critical temp. 127 °CLiquid density
/g•cm-30.668
(20°C)
Critical Pressure/ MPa 5.37
DME Diesel Propane Butane Methanol
MW 46.07 190~220 44.11 58.13 32.01Boiling point
/°C-24.9 180~360 -42 -0.5 65
Vapor pressure /kPa
5.1 8.4 2.1 0.32
Liquid density /g•cm-3
0.668 0.84 0.501 0.61 0.79
Liquid viscosity /x104 Pa•s-1
0.15 5.35~6.28 0.10 0.18 0.768
LHV/MJ•kg-1 28.43 42.5 46.36 45.74 19.5Cetane number 55~60 40~55 Octane
number112
Vaporization heat /kJ •kg-1
410 250 370 358 1110
C/% 52.2 86 81.8 82.8 37.5O/% 34.8 0 0 0 50H/% 13 14 18.2 17.2 12.5
D
M
E
Coal
Nature Gas
Biomass
Petroleum Residue/coke
Gasification
Reforming
Steam ReformingPartial Oxidation
Gasification
syngas Civil fuel
Diesel Substitute
Large-scale Fuel gas/steam combined cycles for electricity generation
Small-scale distributed electricity/heat/cold combined supply
Chemical intermediatematerial
syngas
syngas
syngas
Feedstock and Usage of DME
Outline
1. Introduction2. Usage of Methanol and DME3. Production from Biomass4. Conclusion5. Acknowledgment
Liquid Fuel from Biomass
CH1.4O0.6
CH3OH (CH4O)
CH3OCH3 (CH3O 0.5)
CnHm (CH2.x)
A Novel process for methanol and dimethyl ether (DME) production from biomass gasification has been proposed and practiced in GIEC at lab scale.
Co-reforming of biogas and bio-syngas
Energy Crops, Agro-residue, Forest residue
3 billion T
Agro-residue, Organic trash,
manure, sewage
4 billion T
Biomass
Gasification
Anaerobic
Digestion
fertilizer
DME
Methanol
Biomass Gasification for Generation in Sanya
Slurry reactor for DME synthesis
Flow chart of Biomass To Liquid (bench scale)
Liquid Fuel
BiogasCO2+O2+Steam
Biomass
Compressor
High Pressure Vessel
Gasifier
Clean up Reformer
Synthesis reactor
Condenser
5 1 0 5 1 5 5 2 0 5 2 5 5 3 0 5 3 5 5 4 0
0 .2 6
0 .2 8
0 .3 0
0 .3 2
0 .3 4
0 .3 6
0 .3 8
0 .4 0
0 .4 2
0 .4 4
0 .4 6
0 .4 8
0 .5 0ST
Y of
met
hano
(g/g
.cat
.h)
T em p eratu re (K )
C a t1 C a t4C 3 0 6
V(H2)/V(CO)/V(CO2)/V(N2) =47/22/27/4Pressure = 3MPa,SV= 7500h-1
5 0 0 5 0 5 5 1 0 5 1 5 5 2 0 5 2 5 5 3 0 5 3 50 .2 5
0 .3 0
0 .3 5
0 .4 0
0 .4 5
STY
of m
etha
nol (
g/g.
cat.h
)
T e m p e ra tu re ( K )
(1 )
(2 )
(3 )
(4 )
(1)Syngas: V(H2)/V(CO)/V(CO2)/V(N2) =66/27/3/4;(2)Reformed biosyngas: V(H2)/V(CO)/V(CO2)/V(N2)=55/36/5/4;(3) Biosyngas+ H2: V(H2)/V(CO)/V(CO2)/V(N2)=64/14/18/4;(4)Biosyngas: V(H2)/V(CO):V(CO2)/V(N2) =47/22/27/4
1000 1500 2000 2500 3000 3500 4000
20
30
40
50
60
70
80
Con
vers
ion
of C
O (m
ol%
)
GHSV (h-1)
cat25 cat38 cat50
Temperature:553K, P:3MPa
1000 1500 2000 2500 3000 3500 400035
40
45
50
55
60
65
Sel
ectiv
ity o
f CO
to D
ME
(mol
%)
cat25 cat38 cat50
GHSV (h-1)
Temperature:553K,P:3MPa
The effect of Si/Al ratio on the conversion of CO with the GHSV
The effect of Si/Al ratio on the selectivity of DME with the GHSV
480 490 500 510 520 530 540 550 560 570
0.00
0.05
0.10
0.15
0.20
0.25
0.30
0.35
0.40
0.45
0.50
STY
of D
ME
( t-D
ME/
m3 -c
at./h
)
Temperature (K)
16.7% 25% 40% 50% 66.7%
Pressure:3MPaGHSV:3000h-1
10 20 30 40 50 60 70
20
30
40
50
60
70
80
HZSM-5 content (wt%)
Con
vers
ion
of C
O (m
ol%
)
Temperature:543KPressure:3MPaGHSV:3000h-1
20
30
40
50
60
70
80
Selectivity of DM
E (m
ol%)
The effect of contents of HZSM-5 on the space time yield of DME with the temperature
The effect of content of HZSM-5 on the conversion of CO and the selectivity of DME
Outline
1. Introduction2. Usage of Methanol and DME3. Production from Biomass4. Conclusion5. Acknowledgment
Concluding Remarks
Biomass is stainable feed for production of DME and methanolThe Process BTL (biomass gasification, gas cleaning up and reforming, liquid fuel synthesis) is promising in the era of petroleum depleting fastPilot plant should be set up ASAP
Acknowledgment
Financial support from Ministry of Science & Technology, National Science Foundation
Thanks!