CN103657372A - Flue gas dust-removing and mercury-removing system - Google Patents
Flue gas dust-removing and mercury-removing system Download PDFInfo
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- CN103657372A CN103657372A CN201310631987.2A CN201310631987A CN103657372A CN 103657372 A CN103657372 A CN 103657372A CN 201310631987 A CN201310631987 A CN 201310631987A CN 103657372 A CN103657372 A CN 103657372A
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Abstract
The invention relates to a flue gas dust-removing and mercury-removing system. The flue gas dust-removing and mercury-removing system mainly comprises a flue gas temperature control pipe, a flue gas oxidation tower, a flue gas dust-removing device and a mercury-adsorbing chamber which are connected with one another sequentially. According to the flue gas dust-removing and mercury-removing system provided by the invention, coarse-particle and fine-particle dust is separated from high-temperature flue gas by filtering for many times by physical filtration and static adsorption methods and by effectively settling, so that large-particle mercury is initially removed from the flue gas and the system is favorable for the load of the subsequent flue gas mercury-removing equipment; digital detection equipment is also provided, and digital detection signals can be output to a main control device, so that the automatic control purpose can be achieved. During mercury removal, the temperature of the flue gas is controlled to be about 140 DEG C through the temperature control pipe, the flue gas is oxidized by spraying chlorine to generate gas-phase mercury ions, the gas-phase mercury is adsorbed through bromine-carried active carbon, and finally the residual mercury and sulfide are adsorbed completely by spraying ammonia water. The whole flow is simple and short and the mercury-removing effect is good.
Description
Technical field
The present invention relates to a kind of useless flue gas ash removal demercuration treating apparatus.
Background technology
China is that a few take one of country that coal is main energy sources in the world, coal accounts for the ratio of China's primary energy production and consumption always more than 70%, burnt gas has formed huge environmental pollution as the discharge of sulfur dioxide, nitrogen oxide, fundamentally administers the pollution that the discharge of sulfur dioxide and nitrogen oxide causes imperative.
Owing to can inevitably produce a large amount of flue gases and flying dust in industrial production, in flue gas, also contain a large amount of fine particles dust, these dust directly discharge meeting cause severe contamination to environment, to ecological environment, cause destruction in various degree, bring harm to people's Health and Living.Countries in the world environmental protection organization constantly strengthens the improvement of protection, especially atmosphere pollution to environment, industrial gas emission is enforced to control techniques, so some gas cleaning cleaners arise at the historic moment; In quite a while in the past, electric cleaner has been played the part of very important role therein; Yet along with improving constantly that people require living environment, environmental protection organization is also corresponding has both at home and abroad put into effect new discharge standard, and the control of pollution sources has been had to higher requirement.
In addition, mercury is a kind of poisonous heavy metal element in coal, has the feature such as deposition and sluggish growth in hypertoxicity, high volatile volatile, organism.Coal time can give off mercury in burning, and in China's coal, the average content of mercury is 0.22/kg, is in world wide in coal 1.69 times of average mercury content.The coal-fired environmental pollution situation causing allows of no optimist, and its emission control be can not be ignored.Different from other trace element: mercury has strong volatility, so it is in combustion process, more than 85% mercury volatilization enters gas phase, and the mercury of 4%-15% remains in bottom ash.Physics, the chemical property of the mercury of different shape differ greatly, so the technology that removes of conventional needle liquid towards mercury can not effectively be removed the gas phase mercury in flue gas.
Summary of the invention
The technical problem to be solved in the present invention is: propose a kind ofly can before flue gas discharges, to flue gas, carry out the flue gas ash removal demercuration system of dedusting demercuration.
The present invention is that the technical scheme that solves the problems of the technologies described above proposition is: a kind of flue gas ash removal demercuration system, mainly by the flue gas temperature-controlled tube being connected successively, flue gas oxidizing tower, fume dust remover, mercury adsorption chamber and ammonia spray pipe, formed, described flue gas temperature-controlled tube mainly by lead smoke pipe and be located at described in the radiating fin of leading on smoke pipe outer wall form; Described flue gas oxidizing tower is mainly to consist of flue gas oxidizing tower tower body and the chlorine nozzle that is located at described flue gas oxidizing tower tower body inside; In described mercury adsorption chamber, be provided with and carry bromine activated carbon block, described mercury adsorption chamber is provided with exhanst gas outlet for the flue gas after demercuration is discharged in ammonia spray pipe; In described ammonia spray pipe, establish a plurality of ammoniacal liquor shower nozzles, the end of described ammonia spray pipe is provided with exhaust opening, and described exhaust opening place is provided with for flue gas is carried out to dry hot-air drying unit.
Further, described fume dust remover is mainly by smoke-intake pipe road, controller, be arranged on the elementary control of dust filter screen in described smoke-intake pipe road, smoke pipeline, described in being connected to, enter, electrostatic precipitation case between smoke pipeline, digital altimeter, asepwirator pump and rotor type gas flowmeter form, described elementary control of dust screen cover is located at the porch in described smoke-intake pipe road, described asepwirator pump is arranged on described smoke pipeline exit, described digital altimeter and rotor type gas flowmeter are installed in described smoke pipeline and signal outputs to described controller, described smoke pipeline is connected to described mercury adsorption chamber.
Further, described fume dust remover also comprises the dust particle concentration monitor that is located at the smoke-intake pipe road that is positioned at described elementary control of dust filter screen top, the signal output part of described dust particle concentration monitor is connected to the signal input part of described controller, described dust particle concentration monitor is mainly to consist of main control chip and the generating laser, the light sensor that are oppositely arranged, and described light sensor is exported to described main control chip by the strength signal of Ear Mucosa Treated by He Ne Laser Irradiation; Described electrostatic precipitation case is at least two, the described electrostatic precipitation case that is at least two all has controlled end and is serially connected by pipeline, the controlled end of described electrostatic precipitation case is connected to the control end of described controller, and described smoke pipeline is connected to the exit of the electrostatic precipitation case that is positioned at least significant end.
The invention has the beneficial effects as follows:
Flue gas ash removal demercuration system provided by the invention, first by mode multiple times of filtration and the sedimentation effectively of physical filtering and Electrostatic Absorption, isolated thick in high-temperature flue gas, particle dust, tentatively remove oarse-grained mercury in flue gas, the load that is conducive to ensuing flue gas demercuration equipment, digitized checkout equipment is also provided, can export to master control set to reach the object of automatic control by these digital detection signals, if the work number of controlling electrostatic precipitation case by controller by dust particle concentration monitor monitors again to the dust particle concentration in flue gas is in the present invention to reach the object of Based Intelligent Control.
When demercuration, first logical temperature-controlled tube is controlled at 140 degrees Celsius of left and right by the temperature of flue gas, by spraying chlorine, flue gas is oxidized and generates gas phase mercury ion again, then by carrying bromine active carbon, gas phase mercury is adsorbed, finally by the mode of spray ammoniacal liquor, residual mercury and sulfur compounds adsorption is complete, whole flow process is brief, and demercuration is effective.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, flue gas ash removal demercuration system of the present invention is described further.
Fig. 1 is the structural representation of flue gas ash removal demercuration system of the present invention.
Fig. 2 is the structural representation of fume dust remover.
The specific embodiment
Embodiment
As depicted in figs. 1 and 2, the flue gas ash removal demercuration system in the present invention, mainly consists of the flue gas temperature-controlled tube 101 being connected successively, flue gas oxidizing tower 102, fume dust remover 103, mercury adsorption chamber 104 and ammonia spray pipe 105.
Flue gas temperature-controlled tube 101 mainly forms by leading smoke pipe and being located at the radiating fin of leading on smoke pipe outer wall.
Flue gas oxidizing tower 102 is mainly to consist of flue gas oxidizing tower tower body and the chlorine nozzle that is located at flue gas oxidizing tower tower body inside.
In mercury adsorption chamber 104, be provided with and carry bromine activated carbon block, mercury adsorption chamber 104 is provided with exhanst gas outlet for the flue gas after demercuration is discharged in ammonia spray pipe 105; In ammonia spray pipe 105, establish a plurality of ammoniacal liquor shower nozzles, the end of ammonia spray pipe 105 is provided with exhaust opening, and exhaust opening place is provided with for flue gas is carried out to dry hot-air drying unit 106.
The above-described embodiment that is not limited to of the present invention, all employings are equal to replaces the technical scheme forming, and all drops in the protection domain of requirement of the present invention.
Claims (3)
1. a flue gas ash removal demercuration system, it is characterized in that: mainly by the flue gas temperature-controlled tube being connected successively, flue gas oxidizing tower, fume dust remover, mercury adsorption chamber and ammonia spray pipe, formed, described flue gas temperature-controlled tube mainly by lead smoke pipe and be located at described in the radiating fin of leading on smoke pipe outer wall form; Described flue gas oxidizing tower is mainly to consist of flue gas oxidizing tower tower body and the chlorine nozzle that is located at described flue gas oxidizing tower tower body inside; In described mercury adsorption chamber, be provided with and carry bromine activated carbon block, described mercury adsorption chamber is provided with exhanst gas outlet for the flue gas after demercuration is discharged in ammonia spray pipe; In described ammonia spray pipe, establish a plurality of ammoniacal liquor shower nozzles, the end of described ammonia spray pipe is provided with exhaust opening, and described exhaust opening place is provided with for flue gas is carried out to dry hot-air drying unit.
2. flue gas ash removal demercuration system according to claim 1, it is characterized in that: described fume dust remover is mainly by smoke-intake pipe road, controller, be arranged on the elementary control of dust filter screen in described smoke-intake pipe road, smoke pipeline, described in being connected to, enter, electrostatic precipitation case between smoke pipeline, digital altimeter, asepwirator pump and rotor type gas flowmeter form, described elementary control of dust screen cover is located at the porch in described smoke-intake pipe road, described asepwirator pump is arranged on described smoke pipeline exit, described digital altimeter and rotor type gas flowmeter are installed in described smoke pipeline and signal outputs to described controller, described smoke pipeline is connected to described mercury adsorption chamber.
3. flue gas ash removal demercuration system according to claim 2, it is characterized in that: described fume dust remover also comprises the dust particle concentration monitor that is located at the smoke-intake pipe road that is positioned at described elementary control of dust filter screen top, the signal output part of described dust particle concentration monitor is connected to the signal input part of described controller, described dust particle concentration monitor is mainly to consist of main control chip and the generating laser, the light sensor that are oppositely arranged, and described light sensor is exported to described main control chip by the strength signal of Ear Mucosa Treated by He Ne Laser Irradiation; Described electrostatic precipitation case is at least two, the described electrostatic precipitation case that is at least two all has controlled end and is serially connected by pipeline, the controlled end of described electrostatic precipitation case is connected to the control end of described controller, and described smoke pipeline is connected to the exit of the electrostatic precipitation case that is positioned at least significant end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310631987.2A CN103657372A (en) | 2013-11-26 | 2013-11-26 | Flue gas dust-removing and mercury-removing system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310631987.2A CN103657372A (en) | 2013-11-26 | 2013-11-26 | Flue gas dust-removing and mercury-removing system |
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| CN103657372A true CN103657372A (en) | 2014-03-26 |
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| CN201310631987.2A Pending CN103657372A (en) | 2013-11-26 | 2013-11-26 | Flue gas dust-removing and mercury-removing system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107233777A (en) * | 2017-07-05 | 2017-10-10 | 合肥天翔环境工程有限公司 | Thermal-arrest dirt gas processing system |
| CN107281903A (en) * | 2017-07-05 | 2017-10-24 | 合肥天翔环境工程有限公司 | Thermal-arrest gas cleaning plant |
| CN117531352A (en) * | 2024-01-09 | 2024-02-09 | 北京哈泰克工程技术有限公司 | Mercury capturing and absorbing device and method |
-
2013
- 2013-11-26 CN CN201310631987.2A patent/CN103657372A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107233777A (en) * | 2017-07-05 | 2017-10-10 | 合肥天翔环境工程有限公司 | Thermal-arrest dirt gas processing system |
| CN107281903A (en) * | 2017-07-05 | 2017-10-24 | 合肥天翔环境工程有限公司 | Thermal-arrest gas cleaning plant |
| CN117531352A (en) * | 2024-01-09 | 2024-02-09 | 北京哈泰克工程技术有限公司 | Mercury capturing and absorbing device and method |
| CN117531352B (en) * | 2024-01-09 | 2024-04-02 | 北京哈泰克工程技术有限公司 | Mercury capturing and absorbing device and method |
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Application publication date: 20140326 |