Gasification: Difference between revisions
m pic change |
context |
||
| Line 14: | Line 14: | ||
==Context== | ==Context== | ||
{|class="wikitable" | |||
!colspan=2|Definitions in Legislation!!rowspan=7 style="padding: 50px"| !!Types!!Temp. Range °C!!Category!!rowspan=7 style="padding: 50px"| !!Kiln/Furnace/Reactor | |||
|- | |||
|rowspan=6|[[Incineration]]||rowspan=3|[[Incineration with Energy Recovery|With Energy Recovery]]||rowspan=2|[[Combustion]]|| rowspan=2|800 - 1450||rowspan=2|[[Treatment|Thermal Treatment]]|| [[Grate]] | |||
|- | |||
|[[Fluidised Bed]] | |||
|- | |||
|rowspan=2|[[Gasification]]||rowspan=2|500 - 1600||rowspan=2| [[Advanced Thermal Treatment]] ([[ATT]] and [[ACT]])||[[Reciprocating & Rotary]] | |||
|- | |||
|rowspan=3|[[Incineration without Energy Recovery|Without Energy Recovery]]||[[Plasma]] | |||
|- | |||
|rowspan=2|[[Pyrolysis]]||rowspan=2|250 - 700||rowspan=2|[[Advanced Thermal Treatment]] ([[ATT]] and [[ACT]]) ||[[Heated Tube]] | |||
|- | |||
|[[Surface contact]] | |||
|} | |||
== Autothermal Gasifiers == | == Autothermal Gasifiers == | ||
Autothermal (direct) gasifiers provide the necessary heat of conversion by adding an oxidant to achieve partial oxidation of the fuel within the gasification reactor. This releases energy directly in the reactor where it is consumed. Autothermal conditions are easy to achieve using air or oxygen. Overall the complexity of the process is reduced compared to allothermal gasifiers, however the heat release occurs in the zone of contact between the oxidant and a combustible which requires a good internal heat transfer to even out the temperature or causes a temperature gradient inside the gasifier. | Autothermal (direct) gasifiers provide the necessary heat of conversion by adding an oxidant to achieve partial oxidation of the fuel within the gasification reactor. This releases energy directly in the reactor where it is consumed. Autothermal conditions are easy to achieve using air or oxygen. Overall the complexity of the process is reduced compared to allothermal gasifiers, however the heat release occurs in the zone of contact between the oxidant and a combustible which requires a good internal heat transfer to even out the temperature or causes a temperature gradient inside the gasifier. | ||