CN208553727U - A kind of loop slurry mercury removal device for flue gas during smelting demercuration - Google Patents
A kind of loop slurry mercury removal device for flue gas during smelting demercuration Download PDFInfo
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- CN208553727U CN208553727U CN201820499653.2U CN201820499653U CN208553727U CN 208553727 U CN208553727 U CN 208553727U CN 201820499653 U CN201820499653 U CN 201820499653U CN 208553727 U CN208553727 U CN 208553727U
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- demercuration
- flue gas
- mercury
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- mercury removal
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Abstract
The utility model discloses a kind of loop slurry mercury removal devices for flue gas during smelting demercuration, the mercury removal device carries out cyclic absorption to flue gas using the demercuration slurries of pbz polymer demercuration material, demercuration tower passes through rational design simultaneously, it realizes and the foamed of mercury metal in flue gas is absorbed, the removal efficiency to mercury metal in flue gas is greatly improved, achievees the purpose that deep purifying mercury in flue gas；Cost is relatively low for the mercury removal agent that demercuration tower structure design is simple, uses, demercuration efficiency is high, and recoverable metal mercury, without secondary pollution, can be with large-scale use.
Description
Technical field
It is the utility model relates to a kind of mercury removal device, in particular to a kind of using in loop slurry removing metal smelt flue gas
The device of mercury metal belongs to waste gas purification Treatment process field.
Background technique
Mercury metal is a kind of pair of environment, a kind of highly harmful Main Heavy Metal of biology including humans
One of, can accumulate in vivo, the mankind except can directly by its contamination hazard in addition to, can also by food chain it is such as edible by
The harm of mercury pollution poisoning is received between the biology such as fish stained to mercury, the main harm on human body is to influence human body cranial nerve
System, therefore prevention and improvement to heavy metal Hg pollution, are an important environmental protection subjects.
The method for removing heavy metal Hg in removing exhaust gas at present is to carry out physisorphtion using active carbon, also first passes through washing
Mercury in exhaust gas is washed into liquid, then with active carbon carries out physical absorption or using chemical reagent such as vulcanized sodium, organic sulfur, expensive
The method that metal etc. is chemically reacted removes mercury.It is active carbon using the main shortcoming of active carbon physisorphtion
Limited sorption capacity, general mercury quantity of adsorbing only account for 2% or so of adsorbent own wt, and Adsorption effect is not satisfactory.Change
Method removes heavy metal Hg, and there are processing costs to be affected by chemical agent raw material, and the heavy metal precipitation object formed is difficult to
It is separated from washes, operating process is cumbersome and is difficult to reach ideal effect etc..Such as Chinese utility model
(CN205145917U) a kind of system of flue gas demercuration is disclosed, is inhaled by connected flue gas temperature controlling instruments, dust-extraction unit and mercury
Attached tower is constituted, which first passes through physical filtering mode and tentatively remove particulate matter in flue gas, while removing the mercury in particulate matter, keeps away
Exempt to influence adsorption efficiency on adsorbent after particulate matter is adsorbed in；In demercuration, flue gas is made to pass through adsorbent by certain flow
The gold of gold-plated quartz sand, mercury and adsorbent surface forms amalgam, thus by the fixed mercury removed in flue gas on the sorbent of mercury, it
The mercury of absorption is released by heating gold-plated quartz sand afterwards and does later use.The device uses expensive noble metal as mercury
Adsorbent, and need to consume a large amount of electric energy, higher cost.As Chinese utility model (CN206229181U) discloses a kind of cigarette
Qi exhaustion mercury system, including flue, air-introduced machine, heater, active carbon layer and deduster, deduster are mounted on flue, for catching
Collect the flying dust in flue；The flue of the outlet end of the entrance and deduster of air-introduced machine is connected to, the outlet of air-introduced machine and active carbon layer
Entrance connection, air-introduced machine by after dedusting flue gas introduce active carbon layer react, generate elemental sulfur；Heater is to active carbon
Layer is heated, and is heated to elemental sulfur, is made elemental sulfur by thermal evaporation；The outlet of active carbon layer and the entrance of the deduster
The flue at end is connected to, and the elemental sulfur after gasification enters flue by the pipeline under the action of flue gas.Reactor is to active carbon
It is heated, the SO in flue gas2Elemental sulfur is converted into during contacting with active carbon after heating, elemental sulfur is distributed in flue gas
In, enter in flue with flue gas, reacted with the mercury in flue gas, generate mercuric sulphide, is trapped and remove by deduster.The device utilizes cigarette
Sulphur dioxide reduction in gas recycles the Elemental Mercury in elemental sulfur capture flue gas, the plant energy consumption is big, and utilizes at elemental sulfur
The reaction efficiency that elemental sulfur captures mercury is low.
Utility model content
It is deposited for existing using the device and technique of physics and chemical method removing metal smelt heavy metal in flue gas mercury
Defect, the purpose of this utility model is to be to provide that a kind of structure design is simple, and removing heavy metal Hg is high-efficient, removing compared with
Thoroughly, without secondary pollution, and the mercury removal device of recyclable mercury resource, it can be with large-scale use.
In order to achieve the above technical purposes, it is de- to provide a kind of loop slurry for flue gas during smelting demercuration for the utility model
Mercury device comprising tower body；The tower body inner upper end is separated into region I and region II by the way that vertical baffle is arranged, region I and
The region bottom II is connected to by tower body interior lower end；
Air inlet pipe is equipped at the top of the region I, the air inlet pipe interior lower end is equipped with upper jet pipe；
Gas outlet is equipped at the top of the region II, top is equipped with Flushing nozzle, and lower part is equipped with demisting foam layer；
The tower body lower part is equipped with liquid outlet；
Circulating pump, liquid outlet and the tower body top that circulating pump passes through circulating line and tower body lower part are equipped with outside the tower body
Upper jet pipe connection.
Preferred scheme, the tower body middle part are equipped with fluid infusion, and middle and lower part is equipped with leakage fluid dram.The mercury removal agent slurries newly prepared
Enter inside tower body from fluid infusion, the demercuration slurries that Adsorption of Mercury reaches saturation are discharged from leakage fluid dram.
Preferred scheme, the tower body inside are filled with demercuration slurries.Demercuration slurries mainly include macromolecule demercuration material,
This material hydrophilic is good, and to the large amount of adsorption of heavy metal Hg, average adsorption mercury quantity generally can reach macromolecule demercuration material
The 10~20% of own wt.Macromolecule demercuration material is three in disclosed Chinese patent application (CN2016105694959)
Paracyanogen amine high molecular material (such as 1 structure of following formula).Its absorption principle is to apply the physical-chemical reaction process such as absorption and chelating,
Heavy metal Hg and macromolecule demercuration material are firmly combined together, adsorbing and removing heavy metal Hg is more thorough.Macromolecule demercuration material
Material acid, in alkaline solution it is with good stability, thus for macromolecule demercuration material regeneration and recycling and recycle
Mercury resource creates good basic condition.The mode that pyrogenic process refining mercury can also be directlyed adopt recycles mercury, and recycling mercury resource mode is more
Flexibly with it is practical.Macromolecule demercuration material can also cooperate organic sulfur, vulcanized sodium, NaHS, sustained release vulcanizing agent, modified active
Charcoal etc. is used as mercury removal agent.The dissolution dispersion of these mercury removal agents obtains demercuration slurries in the solution.
Preferred scheme, the demercuration slurries packed height inside the tower body are less than or equal to fluid infusion, are greater than or equal to
Leakage fluid dram.
Preferred scheme, the demisting foam layer have wire mesh structure.
Preferred scheme, the tower body lower part are equipped with sewage draining exit.
Mercury removal device provided by the utility model can be effectively prevented flue gas by setting demisting foam layer and press from both sides demercuration slurries
It takes system out of, causes the invalid loss of demercuration slurries.Can effectively demisting foam layer be shut off by the way that Flushing nozzle is arranged
The flushing of demercuration slurries returns in demercuration tower, improves the utilization rate of demercuration slurries.
Air inlet pipeline section contacts to form column froth bed using gas-liquid high speed impact in mercury removal device provided by the utility model
Form, greatly improve demercuration slurries to the adsorption efficiency of mercury in flue gas.
Demisting foam layer is plastic material mesh-like material in the mercury removal device of the offer of the utility model.
Partition uses plastics, glass reinforced plastic or metal material in the mercury removal device of the offer of the utility model.
Mercury removal device provided by the utility model is used for the process of metal smelt flue gas demercuration are as follows: metal smelt flue gas is from de-
Air inlet pipe at the top of mercury device tower body introduces, and in air inlet pipe, flue gas takes off with what is sprayed into from the upper jet pipe high pressure of air inlet bottom of the tube
Mercury slurries high speed impact contacts to form column foam, and the formation of column foam can greatly improve contact of the demercuration slurries with flue gas
Time and contact area, to thoroughly remove metallic state mercury in flue gas；Demercuration fume treatment qualification reaches discharge standard, from demercuration
Device tower body gas outlet is discharged outside demercuration system, reduces flue gas entrainment by design demisting foam layer and Flushing nozzle at gas outlet
Demercuration slurries and cause demercuration slurries lose.Mercury removal device realizes following for demercuration flue gas by the way that circulating pump is arranged outside tower body
Ring absorbs, and improves the absorption efficiency of demercuration slurries.
Compared with the prior art, technical solution of the present invention bring advantageous effects:
1) mercury removal device structure design provided by the utility model is simple, and the mercury metal that may be implemented in flue gas is efficiently thorough
It removes, fume treatment qualification reaches discharge standard after demercuration.
2) demercuration tower passes through design and the reverse high-pressure nozzle of flue gas, realization pair in mercury removal device provided by the utility model
The foamed of flue gas absorbs, and to extend soak time, increases contact area, greatly improves absorption efficiency.
3) mercury removal device provided by the utility model can be subtracted by designing demisting foam layer and Flushing nozzle at gas outlet
Few flue gas carries demercuration slurries secretly and demercuration slurries is caused to lose, and reduces the use cost of mercury removal agent.
4) macromolecule demercuration material, organic sulfur, vulcanized sodium, sulphur hydrogenation can be used in mercury removal device provided by the utility model
Sodium, sustained release vulcanizing agent, modified activated carbon or macromolecule demercuration material compounding organic sulfur, vulcanized sodium, NaHS, sustained release vulcanization
Agent, modified activated carbon etc. carry out demercuration to mercurous flue gas during smelting as mercury removal agent, these medicaments are the universal product in the market, cost
It is not high, there is the large amount of adsorption of good cost performance, especially macromolecule demercuration material to heavy metal Hg, average adsorption mercury quantity one
As can reach the 10~20% of macromolecule demercuration material own wt, and it is with good stability in acid, alkaline solution, from
And be the regeneration of macromolecule demercuration material and recycling and recycle mercury resource and create good basic condition, macromolecule is de-
Mercury material is to physical-chemical reaction process such as the absorption of heavy metal Hg and chelatings, firmly with macromolecule demercuration material by heavy metal Hg
It is combined together, adsorbing and removing heavy metal Hg is more thorough.After macromolecule demercuration material Adsorption of Mercury, the side of mercury can be refined with pyrogenic process
Formula recycle mercury, recycling 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] is the mercury removal device structural schematic diagram of the utility model:
Wherein, 1 is air inlet pipe, and 2 be upper jet pipe, and 3 be circulating pump, and 4 be fluid infusion, and 5 be liquid outlet, and 6 be sewage draining exit, and 7 are
Leakage fluid dram, 8 be demercuration tower, and 9 be demisting foam layer, and 10 be Flushing nozzle, and 11 be partition, and 12 be gas outlet, and 13 be region II, and 14 are
Region I.
Specific embodiment
The utility model structure is described in further detail with reference to the accompanying drawing, rather than limits the utility model right
It is required that protection scope.
Mercury removal device provided by the utility model is as shown in Figure 1.Mercury removal device mainly includes tower body 8, inside the tower body
Upper end by be arranged vertical baffle 11 be separated into region I 14 and region II 13, the length of partition is about the 1/3 of tower body length
Left and right, the shape of partition are identical as corresponding tower body axial cross section.Region I and the region bottom II are connected by tower body interior lower end
It is logical；Partition effect mainly limit flue gas flow path, force its flue gas successively by region I, tower body interior lower end and
Region II.The tower body is equipped with air inlet pipe 1 at the top of the I of region, and the air inlet pipe interior lower end is equipped with upper jet pipe 2；Upper jet pipe exists
Air inlet bottom of the tube sprays high pressure demercuration slurries, high pressure demercuration slurries and the high pressure smoke-shock foamed for entering air inlet pipe upwards,
Realize the thorough removing of mercury metal in flue gas.The tower body lower part is equipped with liquid outlet 5；It is equipped with circulating pump 3 outside the tower body, follows
Ring pump 3 is connect by circulating line with the upper jet pipe 2 at the top of the liquid outlet 5 and tower body of tower body lower part.Demercuration slurries are filled in tower
Internal portion is mainly promoted to the upper jet pipe 2 at the top of tower body by the circulating pump 3 outside tower body, realizes that demercuration slurries follow flue gas
Ring absorbs.Fluid infusion 4 is equipped in the middle part of tower body, middle and lower part is equipped with leakage fluid dram 7.The demercuration slurries newly prepared enter tower from fluid infusion 4
Internal portion, packed height are higher than leakage fluid dram 7, are lower than fluid infusion 4, and the demercuration slurries that Adsorption of Mercury reaches saturation are discharged from leakage fluid dram 7,
It is able to maintain demercuration slurries demercuration ability with higher inside tower body.Gas outlet 12 is equipped at the top of the region II of the tower body,
The region top II is equipped with Flushing nozzle 10, and lower part is equipped with demisting foam layer 9；Flushing nozzle 10 is arranged above demisting foam layer 9, demisting
Foam layer is mainly used for retaining the foam of flue gas entrainment, and Flushing nozzle makes foam return to demercuration tower, prevents by spraying aqueous solution
The loss of demercuration slurries.The tower body lower part is additionally provided with sewage draining exit 6, is mainly used for that the waste constantly accumulated in tower is discharged.By
Direct emission after mercury removal device treated flue gas is up to standard.
Embodiment 1
The present embodiment uses a kind of metal smelt flue gas recirculation slurries mercury removal device, is main with macromolecule demercuration material
The material of Adsorption of Mercury is absorbed and chelates, specifically includes the following steps:
(1) mercury content to be processed is no more than 5.0mg/m3Mercurous flue gas during smelting introduces mercury removal device inlet tube, with one
The macromolecule demercuration material circulation slurries for determining mass concentration 15% carry out gas-liquid contact and absorption and chelatropic reaction occur, by heavy metal
Mercury is firmly combined together with macromolecule demercuration material, and demercuration rate is 94% or more.
It (2), 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.
(3) mercury content after removing heavy metal Hg is had reached into 0.05mg/m3Qualified purified gas is from mercury removal device tower body top
Portion gas outlet is expelled to outside battery limit (BL).
Embodiment 2
The present embodiment uses a kind of metal smelt flue gas recirculation slurries mercury removal device, is compounded with macromolecule demercuration material organic
Sulphur is the material of main absorption and chelating Adsorption of Mercury, specifically includes the following steps:
(1) mercury content to be processed is no more than 8.0mg/m3Mercurous flue gas during smelting introduces mercury removal device inlet tube, with one
The macromolecule demercuration material circulation slurries for determining mass concentration 20% carry out gas-liquid contact and absorption and chelatropic reaction occur, by heavy metal
Mercury is firmly combined together with macromolecule demercuration material, and demercuration rate is 97% or more.
It (2), 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.
(3) mercury content after removing heavy metal Hg is had reached into 0.05mg/m3Qualified purified gas is from mercury removal device tower body top
Portion's gas vent is expelled to outside battery limit (BL).
Claims (6)
1. a kind of loop slurry mercury removal device for flue gas during smelting demercuration, it is characterised in that: including tower body (8)；
The tower body inner upper end is separated into region I (14) and region II (13), region I and area by the way that vertical baffle (11) are arranged
The domain bottom II is connected to by tower body interior lower end；
It is equipped with air inlet pipe (1) at the top of the region I, the air inlet pipe interior lower end is equipped with upper jet pipe (2)；
Gas outlet (12) are equipped at the top of the region II, top is equipped with Flushing nozzle (10), and lower part is equipped with demisting foam layer (9)；
The tower body lower part is equipped with liquid outlet (5)；
Circulating pump (3) are equipped with outside the tower body, the liquid outlet (5) and tower body top that circulating pump passes through circulating line and tower body lower part
The upper jet pipe (2) in portion connects.
2. a kind of loop slurry mercury removal device for flue gas during smelting demercuration according to claim 1, it is characterised in that: institute
It states and is equipped with fluid infusion (4) in the middle part of tower body, middle and lower part is equipped with leakage fluid dram (7).
3. a kind of loop slurry mercury removal device for flue gas during smelting demercuration according to claim 1, it is characterised in that: institute
It states inside tower body filled with demercuration slurries.
4. described in any item a kind of loop slurry mercury removal devices for flue gas during smelting demercuration according to claim 1~3, special
Sign is: the demercuration slurries packed height inside the tower body is less than or equal to fluid infusion (4), and is greater than or equal to leakage fluid dram
(7)。
5. a kind of loop slurry mercury removal device for flue gas during smelting demercuration according to claim 1, it is characterised in that: institute
Demisting foam layer (9) are stated with wire mesh structure.
6. a kind of loop slurry mercury removal device for flue gas during smelting demercuration according to claim 1, it is characterised in that: institute
Tower body lower part is stated equipped with sewage draining exit (6).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201820499653.2U CN208553727U (en) | 2018-04-10 | 2018-04-10 | A kind of loop slurry mercury removal device for flue gas during smelting demercuration |
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| CN201820499653.2U CN208553727U (en) | 2018-04-10 | 2018-04-10 | A kind of loop slurry mercury removal device for flue gas during smelting demercuration |
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| CN208553727U true CN208553727U (en) | 2019-03-01 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112058071A (en) * | 2020-07-24 | 2020-12-11 | 中国恩菲工程技术有限公司 | Demercuration slurry and preparation method thereof |
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2018
- 2018-04-10 CN CN201820499653.2U patent/CN208553727U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112058071A (en) * | 2020-07-24 | 2020-12-11 | 中国恩菲工程技术有限公司 | Demercuration slurry and preparation method thereof |
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