Nov 19
Through PEAT’s India subsidiary, a Special Purpose Vehicle is being been formed to support a PTDR-500 plasma gasification waste to energy project with the Nandesari Environmental Control Ltd to process a range of industrial waste and hazardous waste. A project site, within the Nandesari Industrial Estate, has been set aside for the plasma gasification waste to energy project.
Further, the Environmental Clearance (EC) for the plasma gasification waste to energy project was granted in November 2010 and now the focus is on the process of securing the No Objection Certificate (NOC) from the Government of Gujarat.
The plasma gasification waste to energy project includes the utilization of a portion of the syngas produced to dewater an additional 15 metric tons of aqueous organic wastes (brining gate capacity to approximately 22 metric tons per day).
Jul 03
As mentioned earlier in this blog, PEAT advancing a project for a client in China to treat refinery sludge and petrochemical waste. The system construction is finished and the system is currently en route to China. This plasma gasification system is expected to be commissioned during the later part of July.
Unlike incineration, where combustion gases are treated at atmospheric pressure, the volume of syngas that is generated in a plasma gasification system is significantly reduced. The smaller flue gas volumes also bring benefits in terms of the scale of downstream air pollution control equipment.
Here is a representative syngas composition, composition and heat value for processing 500 lbs/hr of petroleum sludge and fluxing agents with the following chemical composition (Carbon: 30.85%, Hydrogen: 3.18%, Chlorine: 0.65%, Oxygen: 0.41%, Sulfur 0.31%, water 23.82%, metals 0.17%, inorganics 40.54%) in a plasma thermal destruction and recovery system.
|
Upstream of APC System |
Downstream of APC System |
| Element |
Nm3/HR |
SCF/HR |
% VOL |
in Nm3/Hr |
in SCF/Hr |
% VOL |
| CO |
110.204 |
3,889.091 |
34.281% |
110.139 |
3,886.807 |
30.247% |
| CO2 |
17.864 |
630.432 |
5.557% |
17.854 |
630.062 |
4.903% |
| H2 |
146.153 |
5,157.741 |
45.464% |
146.067 |
5,154.712 |
40.114% |
| N2 |
39.756 |
1,402.973 |
12.367% |
55.817 |
1,969.792 |
15.329% |
| H2S |
0.485 |
17.123 |
0.151% |
0.005 |
0.171 |
0.001% |
| HCl |
0.935 |
33.001 |
0.291% |
0.009 |
0.330 |
0.003% |
| Particulates and Metal Oxides |
6.062 |
213.944 |
1.886% |
0.052 |
1.817 |
0.014% |
| H20 |
0.008 |
0.297 |
0.003% |
34.191 |
1,206.616 |
9.390% |
| Total |
321.468 |
11,344.603 |
100.000% |
364.135 |
12,850.307 |
100.000% |
|
|
|
|
|
|
|
| Heat Value (kj/Nm3) |
|
|
|
|
|
|
| Heat Value (kj/Nm3) |
|
|
|
8752.595138 |
|
|
| Heat Value (Btu/SCF) |
|
|
|
|
235.076746 |
|
| Density of Syngas (kg/Nm3) |
|
|
0.778 |
|
|
|
| Note: APC system consisting of spray Dryer/Gas Quencher, Activated Carbon Injection, Baghouse Filter, Packed Bed Tower/Polishing Scrubber |
The syngas generated from a plasma gasification system could be converted into a variety of different fuels such as ethanol, natural gas (methane) and hydrogen or can be used to generate electricity directly similar to gasification. Some companies are trialing systems for upgrading syngas from their plasma gasification processes to be used as a chemical feedstock for products such as hydrogen recovery. However, the commercial status of such projects indicates that these are still in the development stage.
