PRODUCTS
Conversion of natural gas
The technology is designed for processing of natural gas to commercial products: liquid engine fuels, alcohols, dimethyl ether, etc. Natural gas at high temperature is mixed with carbon dioxide and steam to form synthesis gas (mixture of carbon monoxide and hydrogen) - raw material for organic synthesis technologies (Fischer-Tropsch synthesis, oxo synthesis). The ratios of components at the inlet are selected to ensure the desired ratio of H2 / CO at the outlet. The technology features allow to vary this parameter in a wide range.
Main advantages:
- Ability to create small-tonnage production;
- Degree of natural gas conversion of above 98%;
- Сonversion of reaction products to useful reaction products (selectivity) over 98%;
- Compactness of the process equipment;
- Absence of catalyst;
- Possibility of obtaining the desired ratio of components of useful reaction products.
Scheme of natural gas conversion
1 - generator of high temperature component flow;
2 - reaction chamber;
3 - steam generator;
4 - absorber of carbon dioxide;
5 - filter;
6 - electricity generator;
7 - heat exchanger;
8 - steam generator;
9 - absorber of carbon dioxide;
10 - desorber of carbon dioxide.
Generator of high temperature component flow
Comparison with traditional methods
|
Conversion parameters |
Conversion methods |
|||
|
Partial oxidation |
Steam conversion |
Proposed «CTG» |
||
|
Mixture |
Carbon dioxide |
|||
|
Secondary blowing, kg/kg |
O2: 1-1,3 H2O: 0,6-0,7 |
Н2О – 2,3 |
CO2 – 0,576 H2O – 0,887 |
CO2 – 2,75 |
|
Outlet temperature, K |
850-1100 |
1200 |
1500 |
1500 |
|
Power inputs per kg of methane, kW∙h/kg |
— |
6,5 |
6,9 |
9,0 |
|
Yield of dry gas, kg/kg |
1,8-2,1 |
2,12 |
1,8-2,5 |
3,75 |
|
[H2]/[CO] |
1,8-2,24 |
3,0 |
1-3 |
1,0 |
|
Calorific value, MJ/kg |
23,7 |
33 |
27,3 |
18,9 |
|
Conversion degree, % |
95 — 99 |
75 – 90 |
95 – 100 |
95 – 100 |
|
Chemical efficiency, % |
81 |
88 |
85 |
82 |
|
Pre-reforming of higher hydrocarbons |
+ |
+ |
— |
— |
|
Hydrogenation of organic compounds |
+ (кат) |
+ |
— |
— |
|
Removal of HCN (without water shift reactor) |
+ (воздух) |
— |
— |
— |
Minimum output for natural gas — 345 kg / day.
Minimum output on synthesis gas — 935 kg / day.
Power consumption — 500 kW.
The estimated cost of the installation is 2 million USD.
Project implementation period — 18 months.
If you have questions about our technology, you can ask them by e-mail: spb@ctg.su.