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US 9,308,494 B2Granted
Flue-gas purification and reclamation system and method thereof
OwnerBaoquan Zhang, Xiaoqing Zhanginventors
Life of this patent
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Abstract
A flue-gas purification system includes a flue-gas cycling system, a reacting means, and an absorbent adding system having at least a catalytic absorbent, wherein the catalytic absorbent is being gasified for reacting with the flue-gas in the reacting means in a homogenous gas-gas phase reacting manner. Therefore, the purification system has fast reaction rate between the pollutants of the flue-gas and the catalytic absorbent, which is preferably ammonia, to efficiently remove pollutants, so as to effectively purify the flue-gas.
Claims7
A flue-gas purification system, comprising:
- a reacting means;
- a flue-gas cycling system for conveying at least one exhaust flue-gas to said reactor;
- and
- an absorbent adding system containing at least a catalytic absorbent for reacting a plurality of pollutants of said flue-gas in said reactor at a reacting temperature of 140° C. or below to form a series of reactions, wherein final products in solid state is formed said pollutants of said flue-gas under UV environment to enhance a reaction rate thereof.
1 more element
A flue-gas purification system, comprising:
- a reacting means;
- a flue-gas cycling system for conveying at least one exhaust flue-gas to said reactor;
- and
- an absorbent adding system containing at least a catalytic absorbent for reacting a plurality of pollutants of said flue-gas in said reactor at a reacting temperature of 140° C. or below to form a series of reactions, wherein said pollutants of said flue-gas comprises mercury, which is being removed via a process in said reacting means having chemical equations of said series reactions in said reacting means below:
- Hg+NO2→HgO+NO
- HgO+NH3→Hg(NH3)nO wherein n=3,4
- Hg(NH3)3O+4SO2+3H2O→HgSO3+3NH3HSO3
- HgSO3+O→HgSO4
- NH3HSO3+O→NH3HSO4.
6 more elements
A flue-gas purification system, comprising:
- a reacting means;
- a flue-gas cycling system for conveying at least one exhaust flue-gas to said reactor;
- and
- an absorbent adding system containing at least a catalytic absorbent for reacting a plurality of pollutants of said flue-gas in said reactor at a reacting temperature of 140° C. or below to form a series of reactions, wherein said catalytic absorbent is being delivered into said reacting means in a multiple stages manner, wherein each of said stages in said reacting means has a specific reactive conditions thereof for mainly reacting a targeted pollutant in said flue-gas while further reacting with other said non-mainly-targeted pollutants.
1 more element
A method of purifying flue-gas, comprising the steps of:
- (a) conveying a flue-gas into a reacting means;
- (b) conveying a catalytic absorbent into said reacting means for reacting with two or more pollutants of said flue-gas at a reacting temperature of 140° C. or below to form a series of reactions and providing a UV light to enhance a reaction rate of final products in solid state being formed said pollutants of said flue-gas under UV environment;
- and
- (c) discharging said purified flue-gas into air.
1 more element
A method of purifying flue-gas, comprising the steps of:
- (a) conveying a flue-gas into a reacting means;
- (b) conveying a catalytic absorbent into said reacting means for reacting with two or more pollutants of said flue-gas at a reacting temperature of 140° C. or below to form a series of reactions and;
- and
- (c) discharging said purified flue-gas into air;
- wherein said pollutants of said flue-gas comprises mercury, which is being removed via a process in said reacting means having chemical equations of said series reactions in said reacting means below:
- Hg+NO2→HgO+NO
- HgO+NH3→Hg(NH3)nO wherein n=3,4
- Hg(NH3)3O+4SO2+3H2O→HgSO3+3NH3HSO3
- HgSO3+O→HgSO4
- NH3HSO3+O→NH3HSO4.
7 more elements
A method of purifying flue-gas, comprising the steps of:
- (a) conveying a flue-gas into a reacting means;
- (b) conveying a catalytic absorbent into said reacting means for reacting with two or more pollutants of said flue-gas at a reacting temperature of 140° C. or below to form a series of reactions and;
- and
- (c) discharging said purified flue-gas into air wherein said catalytic absorbent is being delivered into said reacting means in a multiple stages manner, wherein each of said stages in said reacting means has a specific reactive conditions thereof for mainly reacting a targeted pollutant in said flue-gas while further reacting with other said non-mainly-targeted pollutants.
1 more element
A method of purifying flue-gas, comprising the steps of:
- (a) conveying a flue-gas into a reacting means;
- (b) conveying a catalytic absorbent into said reacting means for reacting with two or more pollutants of said flue-gas at a reacting temperature of 140° C. or below to form a series of reactions and;
- and
- (c) discharging said purified flue-gas into air;
- wherein said pollutants of said flue-gas comprises carbon dioxide CO2, which is being removed via a process in said reacting means having chemical equations of said series reactions in said reacting means below:
- CO2+NH3—H2O→NH4HCO3
- NH4HCO3+NH3→(NH4)2CO3.
4 more elements
Dependencies are inferred from the claim text.