CN208340490U - A kind of oxidation for flue gas during smelting demercuration-absorption joint mercury removal device - Google Patents
A kind of oxidation for flue gas during smelting demercuration-absorption joint mercury removal device Download PDFInfo
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- CN208340490U CN208340490U CN201820773213.1U CN201820773213U CN208340490U CN 208340490 U CN208340490 U CN 208340490U CN 201820773213 U CN201820773213 U CN 201820773213U CN 208340490 U CN208340490 U CN 208340490U
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Abstract
The utility model discloses a kind of oxidation for flue gas during smelting demercuration-absorption to combine mercury removal device comprising concatenated oxidation demercuration tower and absorption demercuration tower；Aoxidize demercuration tower utilizes a variety of oxidants by the Elemental Mercury efficient oxidation in flue gas during smelting at oxidation state mercury simultaneously, it adsorbs demercuration tower and cyclic absorption is carried out to oxidation state mercury using demercuration material, realize the efficient removal of Elemental Mercury and oxidation state mercury in flue gas, and apparatus structure design is simple, the oxidant of use and demercuration material cost are lower, demercuration efficiency is high, and recoverable metal mercury, it is without secondary pollution, be conducive to large-scale promotion use.
Description
Technical field
The utility model relates to a kind of smelting exhaust gas purify mercury removal device, in particular to it is a kind of using combined oxidation method with
The device of heavy metal Hg, belongs to waste gas purification Treatment process field in macromolecule demercuration material absorption joint removing flue gas during smelting.
Background technique
Heavy metal Hg is a kind of pair of environment, a kind of highly harmful Main Heavy Metals Pollution of biology including humans
One of object can be accumulated in vivo, the mankind except can directly by its contamination hazard in addition to, can also be such as edible by food chain
The harm of mercury pollution poisoning is received between the biology such as fish stained by mercury, the main harm on human body is to influence human body brain mind
Through system, therefore prevention and improvement to heavy metal Hg pollution, it is an important environmental protection subject.
The method for removing heavy metal Hg in removing exhaust gas at present is to carry out physical absorption using active carbon, and also first passing through washing will
Mercury is washed into liquid in exhaust gas, then with active carbon carry out physical absorption or using chemical reagent such as vulcanized sodium, organic sulfur etc. into
The method of row chemical reaction removes mercury.Main shortcoming using active carbon physisorphtion is the adsorption capacity of active carbon
Limited, general mercury quantity of adsorbing only accounts for 2% or so of adsorbent own wt, and Adsorption effect is not satisfactory.Chemical method removal
Heavy metal Hg, there are processing costs to be affected by chemical agent raw material, and the heavy metal precipitation object formed is difficult to give up from washing
It is separated in water, operating process is cumbersome and is difficult to reach ideal effect etc..The prior art has de- by the way that reasonable flue gas is arranged
Mercury device carries out the report of flue gas demercuration using these demercuration reagents, as utility model patent (CN205145917U) is open
A kind of system of flue gas demercuration is made of connected flue gas temperature controlling instruments, dust-extraction unit and mercury adsorption tower, which first leads to
It crosses physical filtering mode and tentatively removes particulate matter in flue gas, while removing the mercury in particulate matter, after avoiding particulate matter from being adsorbed in
Adsorption efficiency is influenced on adsorbent；In demercuration, flue gas is made to pass through the gold-plated quartz sand of adsorbent, mercury and absorption by certain flow
The gold on agent surface forms amalgam, so that the fixed mercury removed in flue gas on the sorbent of mercury is passed through heating plating gold quartz later
The mercury of absorption is released and does later use by sand.The device uses expensive noble metal as mercury absorbent, and needs to consume
A large amount of electric energy, higher cost.As utility model (CN206229181U) discloses a kind of flue gas mercury removal system, including flue,
Air-introduced machine, heater, active carbon layer and deduster, deduster are mounted on flue, for trapping the flying dust in flue；Air-introduced machine
Entrance be connected to the flue of the outlet end of deduster, the outlet of air-introduced machine is connected to the entrance of active carbon layer, and air-introduced machine will be through
Flue gas after crossing dedusting introduces active carbon layer reaction, generates elemental sulfur；Heater heats active carbon layer, to elemental sulfur into
Row heating, makes elemental sulfur by thermal evaporation；The outlet of active carbon layer is connected to the flue of the arrival end of the deduster, after gasification
Elemental sulfur enters flue by the pipeline under the action of flue gas.Reactor heats active carbon, the SO in flue gas2With
It is converted into elemental sulfur during active carbon contact after heating, elemental sulfur is distributed in flue gas, is entered in flue with flue gas, with cigarette
Mercury reaction in gas, generates mercuric sulphide, is trapped and remove by deduster.The device is using the sulphur dioxide reduction in flue gas at simple substance
Sulphur recycles the Elemental Mercury in elemental sulfur capture flue gas, and the plant energy consumption is big, and utilizes the reaction efficiency of elemental sulfur capture mercury
It is low.
Summary of the invention
It is deposited for existing mercury removal device physics and chemical mode come the method for removing heavy metal Hg in mercurous flue gas during smelting
Defect, the purpose of this utility model is that be to provide a kind of structure design simple, can efficient removal flue gas during smelting simultaneously
Middle Elemental Mercury and oxidation state mercury, and it is without secondary pollution, and the mercury removal device of recyclable mercury resource, be conducive to large-scale use.
In order to achieve the above technical purposes, the utility model provides a kind of oxidation-absorption for flue gas during smelting demercuration
Joint mercury removal device comprising concatenated oxidation demercuration tower and absorption demercuration tower；
The oxidation demercuration tower inner upper end is separated into gas chamber I and gas chamber II, gas chamber I and gas chamber by the way that vertical baffle is arranged
The connection of the bottom II；
The upper portion side wall of the oxidation demercuration tower is equipped with air inlet pipe, and air inlet pipe is connected in gas chamber I；Subordinate in the air inlet pipe
End is equipped with upper jet pipe, and air inlet pipe upper end is equipped with oxidizing gas entrance；
The top of the gas chamber II is equipped with escape pipe；
The oxidation demercuration tower bottom is pyramidal structure, and the vertex of a cone of pyramidal structure is liquid outlet I,
Circulating pump I is equipped with outside the oxidation demercuration tower, circulating pump I is connected by circulating line and liquid outlet I and upper jet pipe
It connects；
The top of the absorption demercuration tower is equipped with gas outlet, and middle and lower part is equipped with air inlet, and bottom is pyramidal structure, taper knot
The vertex of a cone of structure is liquid outlet II；
The absorption demercuration tower internal upper part is equipped with filler chamber, and packing layer is equipped with above filler chamber, is equipped with down above packing layer
Jet pipe；
The outside of the absorption demercuration tower is equipped with circulating pump II, and circulating pump II passes through circulating line and liquid outlet II and lower spray
Pipe connection；
The escape pipe of oxidation demercuration tower is connected to by pipeline with the air inlet of the absorption demercuration tower.
Preferred scheme, lower part is equipped with demisting foam layer I in the gas chamber II, is equipped with wash tub pipe I above demisting foam layer I；
The demisting foam layer I is made of plastic material silk screen.Demisting foam layer I can be effectively prevented flue gas and be entrained with oxidation for slurries are aoxidized
Demercuration tower causes the invalid loss of oxidation slurries.Flushing nozzle I can effectively shut off demisting foam layer I the oxidation slurries to get off
Flushing returns in oxidation demercuration tower, improves the utilization rate of oxidation slurries.
Preferred scheme, the oxidation demercuration tower middle and lower part are equipped with fluid infusion I.The oxidation slurries newly prepared from fluid infusion into
Enter to aoxidize inside demercuration tower.
Preferred scheme, the circulating line between circulating pump I and upper jet pipe are equipped with outlet I.Oxygen after oxidation deactivation
Slurrying liquid is discharged from from outlet I on circulating pump I outlet conduit.
Preferred scheme, filled with oxidation slurries in the oxidation demercuration tower, the oxidation slurries packed height be lower than or
Equal to fluid infusion I.Oxidation solution generally uses liquor potassic permanganate, potassium chlorate solution or other with similar function in oxidation demercuration tower
The oxidizing agent solution etc. of energy.
Preferred scheme, the lower jet pipe top are equipped with demisting foam layer II, are equipped with wash tub pipe II above demisting foam layer II.
The demisting foam layer II is made of plastic material silk screen.Demisting foam layer II can be effectively prevented flue gas and be entrained with demercuration slurries
System, causes the invalid loss of demercuration slurries.Flushing nozzle II effectively demisting foam layer II can be shut off get off demercuration slurries punching
It washes and returns in absorption demercuration tower, improve the utilization rate of demercuration slurries.
The middle and lower part of preferred scheme, the absorption demercuration tower is equipped with fluid infusion II, the level height of the fluid infusion II
Lower than air inlet.The demercuration slurries newly prepared enter inside absorption demercuration tower from fluid infusion II.
Preferred scheme, the circulating line between circulating pump II and upper jet pipe are equipped with outlet II.After being adsorbed to saturation
Demercuration slurries be discharged from from outlet II on circulating pump II outlet conduit.
Demercuration slurries are filled in preferred scheme, the absorption demercuration tower inside, and the packed height of demercuration slurries is lower than or waits
In fluid infusion II.Demercuration slurries mainly include demercuration material such as macromolecule demercuration material, organic sulfur, vulcanized sodium, NaHS, delay
Release any combination of either these demercuration materials such as vulcanizing agent, modified sulfur-bearing active carbon.Preferably macromolecule demercuration material or
The combination of person macromolecule demercuration material and other demercuration materials.Macromolecule demercuration material hydrophilic is good, and the suction to heavy metal Hg
Attached amount is big, and average adsorption mercury quantity generally can reach the 10~50% of macromolecule demercuration material own wt.Macromolecule demercuration material
For existing public material.As the melamine class high molecular material in Chinese patent application (CN2016105694959) is (as follows
1 structure of formula).Its absorption principle is using the physical-chemical reaction process such as absorption and chelating, by heavy metal Hg and macromolecule demercuration
Material is firmly combined together, and adsorbing and removing heavy metal Hg is more thorough.Macromolecule demercuration material has good in acid, alkaline solution
Good stability, thus for macromolecule demercuration material regeneration and recycling and recycle mercury resource and create good basis
Condition.The mode that pyrogenic process refining mercury can also be directlyed adopt recycles mercury, recycling mercury resource mode it is more flexible with it is practical.Macromolecule demercuration material
Material can also cooperate the sulfur-containing compounds conducts such as organic sulfur, vulcanized sodium, NaHS, sustained release vulcanizing agent, modified sulfur-bearing active carbon
Mercury removal agent.The dissolution dispersion of these mercury removal agents obtains demercuration slurries in the solution.
Preferred scheme, the filler chamber inside are filled with hollow sphere or Raschig ring filler.
Preferred scheme, described filler layer are made of hollow sphere or Raschig ring filler.The effect of packing layer or filler chamber is
Increase residence time of the flue gas in tower, that is, extend the time of contact of flue gas and demercuration slurries, another effect is to improve cigarette
The contact area of gas and demercuration slurries improves the efficiency of demercuration to improve the reaction efficiency of the mercury and demercuration slurries in flue gas.
It is the mixed oxidization in mercury fume that the utility model, which is equipped with oxidizing gas entrance main function in air inlet pipe upper end,
Property gas, oxidizing gas such as ozone, chlorine dioxide or other there is similar functions gas etc..
The stair oxidation demercuration tower air inlet pipeline section of the utility model contacts to form column froth bed using gas-liquid high speed impact
Form, greatly improve oxidation slurries to the oxidation efficiency of Elemental Mercury in flue gas.Gaseous oxidant and solid oxidation are used simultaneously
Agent combined oxidation mode, oxidant synergistic oxidation ability gives full play to both in froth bed, realizes the efficient oxidation of Elemental Mercury.
The absorption demercuration tower of the utility model makes demercuration slurries disperse thin foam by filling packing layer, realizes flue gas and takes off
The thin foamization of mercury slurries absorbs, and improves the contact area of demercuration slurries and flue gas and extends contact time.
The bottom of the oxidation demercuration tower of the utility model and absorption demercuration tower is respectively provided with tapered structure, and liquid outlet I and
Liquid outlet II is separately positioned on oxidation demercuration tower and adsorbs the vertex of a cone position of demercuration tower, can prevent in oxidation slurries and demercuration slurries
Solid matter is sunk to the bottom because of natural subsidence, causes to be difficult to realize recycle, and the bottom for aoxidizing demercuration tower and absorption demercuration tower is all provided with
It is set to pyramidal structure, can effectively improve the utilization rate of oxidation slurries and demercuration slurries.
Filler chamber's internal diameter of the absorption demercuration tower of the utility model is less than the internal diameter of absorption demercuration tower, can promote the filler
The gas climbing speed of interval, the rolling for being conducive to hollow sphere packing layer are wriggled, and gas liquid contacting efficiency and time of contact are improved, into
And improve the utilization rate of demercuration slurries.
In the utility model, after mercurous flue gas during smelting is first mixed into oxidizing gas, introduce oxidation demercuration tower, gas from upper and
The lower air inlet pipeline section by oxidation demercuration tower, carries out oxidation reaction, then sequentially enter gas chamber I and gas chamber II in air inlet pipe, from
It aoxidizes the flue gas that demercuration tower top comes out and introduces absorption demercuration tower, gas passes through absorption demercuration tower from bottom to top, in absorption demercuration
Demercuration is sufficiently adsorbed in the packing layer of tower, the purified gas that processing qualification reaches discharge standard is extracted from the outlet of absorption demercuration tower
Direct emission.
Compared with the prior art, the utility model bring advantageous effects:
1) for the utility model by design oxidation demercuration tower and absorption demercuration tower Combined Treatment metal smelt flue gas, oxidation is de-
General mercury removal agent can be difficult to the Elemental Mercury efficient oxidation adsorbed into the oxidation state mercury of high-valence state by mercury tower, and adsorb demercuration tower benefit
The mercury of oxidation state is realized into efficient absorption with demercuration material, to realize metal smelt flue gas intermediate ion mercury (Hg2+) and simple substance
Mercury (Hg0) while efficient removal.
2) the oxidation demercuration tower of the utility model is mixed into oxidizing gas by the way that oxic gas entrance is arranged in flue gas, simultaneously
The oxidation slurries containing oxidant are continuously sprayed by circulating line, the combined oxidation of Elemental Mercury in mercury fume may be implemented, greatly
It is big to improve oxidation efficiency, realize most Elemental Mercury (Hg0) it is converted into ionic mercury (Hg2+), it is processed to be conducive to subsequent demercuration
Journey.
3) the absorption demercuration tower of the utility model utilizes macromolecule demercuration material pair by setting circulated sprinkling absorption plant
Heavy metal Hg is desorbed, and macromolecule demercuration material substantially increases mercury adsorbing and removing efficiency, demercuration processing to mercury large amount of adsorption
More thoroughly, and it is with good stability in acid, alkaline solution, can regenerate and reuse, and realizes that mercury resource is returned
It receives.
4) it is anti-to form foam by design and the reverse high-pressure nozzle of flue gas for oxidation demercuration tower provided by the utility model
It answers, to extend the reaction time, increases contact area, greatly improve efficiency, by Elemental Mercury efficient oxidation state mercury, favorably
In subsequent absorption.
5) absorption demercuration tower provided by the utility model can be filled demercuration slurries by design packing layer and lower jet pipe
Divide thin foam, extend soak time and increase contact area, achievees the purpose that thoroughly to remove remaining mercury in flue gas.And lower part filler
Layer design filler chamber, and internal diameter is less than the internal diameter of absorption demercuration tower, can promote the gas climbing speed of the filler interval, favorably
It wriggles, improves gas liquid contacting efficiency and time of contact in the rolling of hollow sphere packing layer, and then improve the utilization rate of demercuration slurries.
6) the oxidation demercuration tower of the utility model and absorption demercuration tower use oxidant and mercury removal agent etc. are normal on the market
The medicament seen, it is simple and easy to get, at low cost, there is good cost performance.
7) the utility model is to the macromolecule demercuration material used to the large amount of adsorption of heavy metal Hg, average adsorption mercury quantity one
As can reach the 10~50% of macromolecule demercuration material own wt, and can directly adopt pyrogenic process refining mercury mode recycle mercury, return
Receive mercury resource mode it is more flexible with it is practical.
In conclusion the utility model has good economic value and social value, application easy to spread.
Detailed description of the invention
[Fig. 1], which for the utility model provides a kind of oxidation for flue gas during smelting demercuration-absorption and combine mercury removal device, to be shown
It is intended to；
Wherein, 1 is air inlet pipe, and 2 be upper jet pipe, and 3 be outlet I；4 be circulating pump I, 5 be gas chamber I, 6 be fluid infusion I, 7
It is oxidation demercuration tower for leakage fluid dram I, 8,9 be demisting foam layer I, and 10 be flushing pipe I, and 11 be partition, and 12 be gas chamber II, and 13 be outlet
Pipe, 14 be absorption demercuration tower, and 15 be air inlet, and 16 be leakage fluid dram II, and 17 be circulating pump II, and 18 be outlet II, and 19 be fluid infusion
Mouth II, 20 be filler chamber, and 21 be lower jet pipe, and 22 be demisting foam layer II, and 23 be wash tub pipe II, and 24 be gas outlet, and 25 be to aoxidize
Gas access；26 be packing layer.
Specific embodiment
Below with reference to embodiment, the invention will be further described, rather than limits the protection model of the claims in the present invention
It encloses.
Mercury removal device schematic diagram such as Fig. 1 institute is combined in oxidation provided by the utility model for flue gas during smelting demercuration-absorption
Show.Oxidation-absorption joint mercury removal device main body includes oxidation demercuration tower 8 and absorption demercuration tower 14 and relevant connection pipeline.Oxidation
Demercuration tower main function is the Elemental Mercury (Hg in the flue gas during smelting of oxidized metal0), absorption demercuration tower main function is to pass through absorption
Remove the oxidation state mercury that original in metal smelt flue gas and oxidation demercuration tower generates.It aoxidizes and is set on the side wall on demercuration tower top
There is air inlet pipe 1；The air inlet pipe top is equipped with oxidizing gas entrance 25, is mixed in metal smelt flue gas by oxidizing gas entrance
Enter oxidizing gas, such as ozone.The air inlet pipe lower part is equipped with upper jet pipe 2, is mainly used for spraying upwards to the inside of air inlet pipe high
Pressure oxidation slurries realize foamed with the metal smelt smoke-shock for entering air inlet pipe, oxidation reaction occur.The oxidation demercuration
Tower inner upper end by be arranged vertical baffle be separated into gas chamber I and gas chamber II, gas chamber I be connected to the bottom gas chamber II, gas chamber I and into
Tracheae connection.Lower part is equipped with demisting foam layer I9 in the gas chamber II；Demisting foam layer I is equipped with wash tub pipe I10.Metal smelt cigarette
Gas is introduced into air inlet pipe, after carrying out foam oxidation in air inlet pipe, enters back into the gas chamber I of oxidation demercuration tower, finally
Into gas chamber II, in gas chamber II, pass through the synergistic effect of demisting foam layer I and wash tub pipe I, the oxygen of metal smelt flue gas entrainment
Slurrying vacuole foam is leached recycling and enters in oxidation demercuration tower, and last metal smelt flue gas enters absorption demercuration from escape pipe 13
Tower.The oxidation demercuration tower middle and lower part is equipped with fluid infusion I6, and it is liquid at the vertex of a cone that oxidation demercuration tower bottom, which is arranged to pyramidal structure,
Mouth 7.Fresh oxidation slurries are continuously replenished from fluid infusion I into oxidation demercuration tower, to guarantee the energy of oxidation of tower internal oxidition slurries
Power.Oxidation slurries are filled in oxidation demercuration tower, and packed height will be lower than fluid infusion I.It is equipped with outside the oxidation demercuration tower
Circulating pump I 4, circulating pump I are by circulating line and aoxidize the liquid outlet I of demercuration tower bottom and aoxidize the upper spray on demercuration tower top
Pipe connection；Circulating line between circulating pump I and upper jet pipe is equipped with outlet I 3.It is by external circulating system that oxidation is de-
Oxidation slurries in mercury tower are promoted to the upper jet pipe of air inlet pipe lower part, after carrying out oxidation reaction to metal smelt flue gas, then flow back to
It aoxidizes in demercuration tower, oxidation demercuration tower is discharged from outlet 1 in the oxidation slurries for losing oxidability.Adsorb the top of demercuration tower 14
Equipped with gas outlet 24, middle and lower part is equipped with air inlet 15, and flue gas enters in absorption demercuration tower from air inlet, in absorption demercuration tower by
Under it is supreme, finally from gas outlet be discharged.It adsorbs the top in demercuration tower and is equipped with two layers of packing layer, lower layer is equipped with filler chamber 20, fills out
Expect that the diameter of room is less than the internal diameter of absorption demercuration tower, is filled with hollow sphere filler in filler chamber, upper layer packing layer 26 is by Raschig ring
Packing layer accumulation is constituted, and lower jet pipe 21 is equipped with above the packing layer of upper layer, is equipped with demisting foam layer II 22 above the lower jet pipe, out
Flushing nozzle 23 is equipped with above demisting layer.Flue gas first passes through filler chamber, and since flue gas pressures are smaller, rate is low, special construction
Filler chamber can promote the gas climbing speed of the filler interval, and the rolling for being conducive to hollow sphere packing layer is wriggled, and improve gas-liquid
Contacting efficiency and time of contact, and then improve the utilization rate of demercuration slurries.And what upper layer packing layer can spray lower jet pipe takes off
Mercury slurries disperse thin foam, realize the deep removal to mercury in flue gas.Demisting foam layer II is mainly used for retaining metal smelt flue gas
The foam of entrainment, Flushing nozzle II make to prevent the damage of demercuration slurries in foam return to absorption demercuration tower by spraying aqueous solution
It loses.Absorption demercuration tower bottom is pyramidal structure, and the vertex of a cone of pyramidal structure is liquid outlet II.The outside for adsorbing demercuration tower is equipped with circulation
II 17 is pumped, circulating pump II is by circulating line and adsorbs the liquid outlet II of demercuration tower lower part and adsorbs the lower spray on demercuration tower top
Pipe connection, demercuration slurries are filled in inside absorption demercuration tower, are mainly promoted to absorption by the circulating pump II outside absorption demercuration tower
The lower jet pipe on demercuration tower top realizes the cyclic absorption to metal smelt flue gas of demercuration slurries.Absorption demercuration tower middle and lower part is set
There is fluid infusion II16.The demercuration slurries newly prepared enter inside absorption demercuration tower from fluid infusion II, and packed height is lower than fluid infusion
II.The level height of fluid infusion II will be arranged lower than air inlet 15, and being conducive to flue gas can smoothly enter into second level demercuration tower.Circulating pump II
Circulating line between upper jet pipe is equipped with outlet II, is adsorbed to the demercuration slurries after being saturated from circulating pump II outlet conduit
On outlet II discharge.The direct emission after treated the flue gas of second level demercuration tower 14 is up to standard.
Using oxidation-absorption joint mercury removal device process, oxygen will be first mixed into mercurous metal smelt flue gas to be processed
Then the property changed gas is re-introduced into oxidation demercuration tower, after gas passes through the air inlet pipe 1 of oxidation demercuration tower, then successively
Into gas chamber I and gas chamber II, the flue gas to be further processed come out from oxidation 8 top of demercuration tower introduce absorption demercuration tower into
Port, gas pass through absorption demercuration tower from bottom to top, handle the qualified purified gas for reaching discharge standard from secondary absorption demercuration tower
Gas outlet extracts direct emission.
Application Example 1
Using the method for heavy metal Hg in oxidation-absorption joint mercury removal device removing flue gas during smelting, with ozone gas, Gao Meng
Sour potassium solution and macromolecule demercuration material are main oxidative absorption and mercury chelate adsorption, specifically includes the following steps:
(1) mercury content to be processed is no more than 10.0~15.0mg/m3Mercurous flue gas during smelting introduces level-one combined oxidation
Demercuration tower air inlet pipe, and it is mixed into 2.0~6.0mg/m of a certain concentration3Ozone, then again with certain mass concentration 0.5~3.5%
Liquor potassic permanganate carry out gas-liquid contact occur redox reaction.
(2) washing removal is absorbed after the reducing impurity and part mercury oxidation that contain in flue gas to be processed, demercuration rate exists
30% or so.
(3) mercury fume for coming level-one combined oxidation demercuration tower gas outlet introduces the tower gas feed of second level demercuration, gas
Pass through second level demercuration tower from bottom to top.
It (4), will a huge sum of money using macromolecule demercuration material to the physical-chemical reaction process such as the absorption of heavy metal Hg and chelating
Belong to mercury to be firmly combined together with macromolecule demercuration material.
(5) mercury content after removing heavy metal Hg is had reached into even lower than 0.01mg/m3Qualified purified gas is de- from second level
Mercury top of tower gas vent is drawn, and qualified discharge is out-of-bounds.
Claims (10)
1. mercury removal device is combined in a kind of oxidation for flue gas during smelting demercuration-absorption, it is characterised in that:
Including concatenated oxidation demercuration tower (8) and absorption demercuration tower (14)；
The oxidation demercuration tower inner upper end is separated into gas chamber I (5) and gas chamber II (12), gas chamber by the way that vertical baffle (11) are arranged
I is connected to the bottom gas chamber II；
The upper portion side wall of the oxidation demercuration tower is equipped with air inlet pipe (1), and air inlet pipe is connected in gas chamber I；Subordinate in the air inlet pipe
End is equipped with upper jet pipe (2), and air inlet pipe upper end is equipped with oxidizing gas entrance (25)；
The top of the gas chamber II is equipped with escape pipe (13)；
The oxidation demercuration tower bottom is pyramidal structure, and the vertex of a cone of pyramidal structure is liquid outlet I (7),
Circulating pump I (4) are equipped with outside the oxidation demercuration tower, circulating pump I is connected by circulating line and liquid outlet I and upper jet pipe
It connects；
The top of the absorption demercuration tower is equipped with gas outlet (24), and middle and lower part is equipped with air inlet (15), and bottom is pyramidal structure, cone
The vertex of a cone of shape structure is liquid outlet II (16)；
The absorption demercuration tower internal upper part is equipped with filler chamber (20), is equipped with packing layer (26) above filler chamber, sets above packing layer
There are lower jet pipe (21)；
The outside of the absorption demercuration tower is equipped with circulating pump II (17), and circulating pump II passes through circulating line and liquid outlet II and lower spray
Pipe connection；
The escape pipe of oxidation demercuration tower is connected to by pipeline with the air inlet for adsorbing demercuration tower.
2. mercury removal device is combined in a kind of oxidation for flue gas during smelting demercuration according to claim 1-absorption, feature exists
In: lower part is equipped with demisting foam layer I (9) in the gas chamber II, is equipped with wash tub pipe I (10) above demisting foam layer I；It is described to remove mist
Layer I is made of plastic material silk screen.
3. mercury removal device is combined in a kind of oxidation for flue gas during smelting demercuration according to claim 1-absorption, feature exists
In: the oxidation demercuration tower middle and lower part is equipped with fluid infusion I (6).
4. mercury removal device is combined in a kind of oxidation for flue gas during smelting demercuration according to claim 1-absorption, feature exists
In: the circulating line between circulating pump I and upper jet pipe is equipped with outlet I (3).
5. mercury removal device is combined in a kind of oxidation for flue gas during smelting demercuration according to claim 1 or 3-absorption, special
Sign is: filled with oxidation slurries in the oxidation demercuration tower, the oxidation slurries packed height is less than or equal to fluid infusion I.
6. mercury removal device is combined in a kind of oxidation for flue gas during smelting demercuration according to claim 1-absorption, feature exists
In: it is equipped with demisting foam layer II (22) above the lower jet pipe, is equipped with wash tub pipe II (23) above demisting foam layer II；The demisting
Foam layer is made of plastic material silk screen.
7. mercury removal device is combined in a kind of oxidation for flue gas during smelting demercuration according to claim 1-absorption, feature exists
In: the middle and lower part of the demercuration tower is equipped with fluid infusion II, and the level height of the fluid infusion II is lower than air inlet；Circulating pump II with
Circulating line between upper jet pipe is equipped with outlet II.
8. mercury removal device is combined in a kind of oxidation for flue gas during smelting demercuration according to claim 1-absorption, feature exists
In: filler chamber's internal diameter is less than the internal diameter of absorption demercuration tower.
9. mercury removal device is combined in a kind of oxidation for flue gas during smelting demercuration according to claim 1-absorption, feature exists
In: demercuration slurries are filled inside the demercuration tower, the packed height of demercuration slurries is less than or equal to fluid infusion II.
10. mercury removal device, feature are combined in a kind of oxidation for flue gas during smelting demercuration according to claim 1-absorption
It is: filled with hollow sphere or Raschig ring filler inside the filler chamber；Described filler layer is by hollow sphere or Raschig ring filler structure
At.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820773213.1U CN208340490U (en) | 2018-05-23 | 2018-05-23 | A kind of oxidation for flue gas during smelting demercuration-absorption joint mercury removal device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820773213.1U CN208340490U (en) | 2018-05-23 | 2018-05-23 | A kind of oxidation for flue gas during smelting demercuration-absorption joint mercury removal device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208340490U true CN208340490U (en) | 2019-01-08 |
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| CN110523250A (en) * | 2019-09-23 | 2019-12-03 | 华北电力大学（保定） | A kind of moving source exhaust gas aftertreatment system can effectively reduce content of beary metal |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110523250A (en) * | 2019-09-23 | 2019-12-03 | 华北电力大学（保定） | A kind of moving source exhaust gas aftertreatment system can effectively reduce content of beary metal |
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