Cement/lime/magnesium productions furnaces emit hot gases at 150-400°C, which, after passing through filters, contain suspended dust and oxides(CO2;SOx;NOx,) promoting origination of global ecological problems.
Dust is a part of the “smog”.
CO2 gas is considered as “harmful” only when it generates “greenhouse effect”. However, CO2 is “useful”, when it accelerates concrete hardening using carbonization nano-process. Cement is blended with 0,05-0,35t/t of CaCO3, that causes increase of natural resources consumption; at that, cement, lime and magnesium enterprises irreversibly emit CO2 to the atmosphere and generate “greenhouse effect” without its use in production that causes economic problem, in addition to ecological one.
SOx(SO2)/NOx, in the atmposphere they generate acids and return back to the planet as “acid rains”.
Application of zeolite sorbing agents is interesting for problem solution related to catching-utilization of dust and(CO2SOxNOx) from cement/lime/magnesium furnaces.
Despite the fact that they pollute the environment, there is still no BAT for catching/utilization of dust/CO2,SOx,NOx emitted from furnaces of cement/clinker/lime/magnesium enterprises (technologies of CO2 catching-regeneration, catching-conservation are known only), so the issue is topical.
Hypothesis 1:When passing burnt gases emitted to the atmosphere at 150-400°C from cement, clinker, lime, magnesium furnaces, through zeolite drying apparatus a drying unit acquires new function, i.e. modifies into a sorbing agent; zeolite will be heated and dehydrated, dust particles will experience chemosorptive precipitation on the zeolite, while(CO2,SOx,NOx) will adsorb in its depth. As a result, purified gases emit to the atmosphere, while via their utilization in some zeolite composition “enriched” by CaO,CaCO3,CO2,SOx,NOx, will take place their poly-modifying, that will generate compounds with fiber-acicular habitus containing(CO2,SOx,NOx).
Hypothesis 2:Cement/lime/magnesium enterprise furnaces and dryers are rotary, of continuous action and have large dimensions, that’s why it is difficult to conduct research by their use. So,in order to validate hypothesis 1 it is necessary to create the laboratory prototype of drying-adsorbing industrial apparatus of continuous action that is a project goal.