What are the differences between direct combustion and catalytic
Waste recycling equipment manufacturer shares that the combustion method of domestic waste treatment equipment can be divided
into two, namely direct combustion and catalytic oxidation combustion. Direct
combustion method refers to when the combustion gas at the same time, through
the oxidation thermal decomposition method, and the heat degradation will be
harmful VOCs in the combustion chamber, the harmful VOCs gases after input into
the combustion chamber, when the objective factors such as high temperature and
enough air condition under the premise of perfect, the harmful gas fully burning
completely, finally make it completely decomposed into CO2 and H2O. And direct
combustion method is this kind of VOCs combustion burnable waste gas, the method
in the treatment of high concentration VOCs gases, show that the effect is
better, but the corresponding requirements for the control of the temperature is
very high, must under the condition of high temperature, when the temperature in
the vicinity of 1100 ℃, the removal efficiency can reach more than 95%, but if
when the waste gas containing Cl, S, N elements, such as the direct combustion
will produce the harmful gas such as HCl, SOx, NOx, cause secondary
Catalytic combustion technology is a new technology developed in recent
decades under the trend of environmental protection and energy conservation.
Catalytic combustion method is to use different kinds of catalyst, using the
principle of the can effectively reduce the reaction activation energy, make the
VOCs in the case of low temperature, its completely oxidized to CO2 and H2O,
generally when the temperature control in the range of 300 ℃ ~ 450 ℃, the vast
majority of hydrocarbons can be in by oxidation, and the removal rate is as high
as 95% above, but the catalyst has the certain service life, and life garbage
disposal equipment in the process of the use of the catalyst, the exhaust gas
catalytic oxidation effect of humidity and types of catalyst has a key effect,
if other material in the waste gas, It is likely to cause the poisoning of the
catalyst, so the high quality catalyst should have the characteristics of high
activation capacity, high thermal stability and hydrothermal stability.
At present, Pd, Pt, Rh, Au, Mn, Co, Ce and Pd, Pt, Rh, Au are precious
metals. However, precious metals are expensive and easy to sintering, so
developing new composite catalysts is the future research direction.
That's all for the sharing,and we supply waste compression system for sale, if you have any demand for our products,just feel free to contact us.