CN208465611U - A kind of metal smelt flue gas demercuration tower - Google Patents
A kind of metal smelt flue gas demercuration tower Download PDFInfo
- Publication number
- CN208465611U CN208465611U CN201820499774.7U CN201820499774U CN208465611U CN 208465611 U CN208465611 U CN 208465611U CN 201820499774 U CN201820499774 U CN 201820499774U CN 208465611 U CN208465611 U CN 208465611U
- Authority
- CN
- China
- Prior art keywords
- demercuration
- flue gas
- tower
- mercury
- tower body
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Treating Waste Gases (AREA)
Abstract
The utility model discloses a kind of metal smelt flue gas demercuration towers, packing layer and lower jet pipe are equipped in its tower body, thin foamization is carried out to mercury fume using the demercuration slurries of pbz polymer demercuration material to absorb, the circulatory system is equipped with outside tower body simultaneously, it realizes that demercuration slurries carry out cyclic absorption to mercury fume, greatly improves the removal efficiency to mercury metal 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
The utility model relates to a kind of demercuration tower, in particular to the demercuration of mercury metal in a kind of removing metal smelt flue gas
Tower 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 demercuration system of recyclable mercury resource, it can be with large-scale use.
In order to achieve the above technical purposes, the utility model provides a kind of metal smelt flue gas demercuration tower, main body packet
Include tower body；The top of the tower body is equipped with gas outlet, and middle and lower part is equipped with air inlet, and lower part is equipped with liquid outlet；The tower is intracorporal
Top is equipped with several layers packing layer, is equipped with lower jet pipe above described filler layer；The outside of the tower body is equipped with circulating pump, circulating pump
It is connect by circulating line with the lower jet pipe of the liquid outlet of tower body lower part and demercuration tower top；Demisting is equipped with above the lower jet pipe
Foam layer；The top of the demisting foam layer is equipped with Flushing nozzle.
Preferred scheme, the tower body middle and lower part is equipped with fluid infusion and leakage fluid dram, and fluid infusion level height is higher than drain
Mouth setting.The demercuration slurries newly prepared enter inside tower body from fluid infusion, and Adsorption of Mercury reaches the demercuration slurries of saturation from leakage fluid dram
Discharge.
More preferably scheme, the level height of the fluid infusion are lower than the air inlet of tower body.
More preferably scheme, the tower body inside are filled with demercuration slurries.Demercuration slurries are filled with inside the tower body.It is de-
Mercury slurries mainly include macromolecule demercuration material, and this material hydrophilic is good, and to the large amount of adsorption of heavy metal Hg, average adsorption
Mercury quantity generally can reach the 10~20% of macromolecule demercuration material own wt.Macromolecule demercuration material is disclosed Chinese patent
Apply for the melamine class high molecular material (such as 1 structure of following formula) in (CN2016105694959).Its absorption principle is using suction
The physical-chemical reaction process such as attached 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 is with good stability in acid, alkaline solution, to be macromolecule demercuration
The regeneration of material and recycling simultaneously recycle mercury resource and create good basic condition.Pyrogenic process refining mercury can also be directlyed adopt
Mode recycles mercury, recycling mercury resource mode it is more flexible with it is practical.Macromolecule demercuration material can also cooperate organic sulfur, vulcanized sodium,
NaHS, sustained release vulcanizing agent, modified activated carbon etc. are used as mercury removal agent.The dissolution dispersion of these mercury removal agents obtains demercuration in the solution
Slurries.
More preferably scheme, the demercuration slurries packed height inside the tower body are less than or equal to fluid infusion, are higher than or wait
In leakage fluid dram.
Preferred scheme, the intracorporal top of tower are equipped at least one layer of packing layer, are preferably equipped with two layers of packing layer.
More preferably scheme, described filler layer are made of hollow sphere or Raschig ring.The effect of packing layer is to increase flue gas to exist
Residence time in tower, that is, extend the time of contact of flue gas and mercury removal agent slurries, another effect is to make the thin foam of demercuration slurries
Change, improve the contact area of flue gas and mercury removal agent slurries, so that improves mercury metal in flue gas and mercury removal agent slurries reacts effect
Rate improves the efficiency of demercuration.
Preferred scheme, the demisting foam layer are wire mesh structure.
Preferred scheme, the tower body lower part are equipped with sewage draining exit, are mainly used for clearing up the precipitated impurities of tower cylinder accumulation.
Flue gas can be effectively prevented by setting demisting foam layer in metal smelt flue gas demercuration tower provided by the utility model will
Demercuration slurries are entrained with tower body, cause the invalid loss of demercuration slurries.It can be effectively by demisting foam layer by setting Flushing nozzle
The demercuration slurries flushing got off of shutting off returns in demercuration tower, improves the utilization rate of demercuration slurries.
Metal smelt flue gas demercuration tower provided by the utility model makes the thin foam of demercuration slurries by filling packing layer, realizes
The thin foamization of flue gas and demercuration slurries absorbs, and improves the contact area of demercuration slurries and flue gas and extends contact time.
The demisting foam layer that metal smelt flue gas demercuration tower provided by the utility model uses is plastic material mesh-like material.
Demercuration system 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-
The air inlet of mercury tower lower part enters in tower body, and flue gas first passes through packing layer from bottom to top, and packing layer can will be sprayed by lower jet pipe
The demercuration slurries entered carry out abundant foamed, and the mercury metal in flue gas is removed in depth, finally, processing qualification reaches discharge standard
Purified gas from tower body gas outlet discharge demercuration tower outside.It is equipped with circulating pump outside demercuration tower tower body, realizes demercuration slurries to flue gas
The cyclic absorption of middle mercury metal improves the absorption efficiency of demercuration slurries.
Compared with the prior art, technical solution of the present invention bring advantageous effects:
1) demercuration tower structure design provided by the utility model is simple, and it is efficiently thorough that the mercury metal in flue gas may be implemented
It removes, fume treatment qualification reaches discharge standard after demercuration.
2) demercuration tower provided by the utility model, can be by the sufficiently thin foam of demercuration slurries by design packing layer and lower jet pipe
Change, extend soak time and increase contact area, achievees the purpose that thoroughly to remove remaining mercury in flue gas.
3) metal smelt flue gas demercuration tower provided by the utility model passes through setting demisting foam layer and Flushing nozzle, Ke Yiyou
Effect prevents flue gas that mercury removal agent slurries are entrained with tower body, causes the invalid loss of mercury removal agent slurries, improves the benefit of mercury removal agent slurries
With rate.
4) macromolecule demercuration material, organic sulfur, vulcanized sodium, sulphur hydrogenation can be used in demercuration tower 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 demercuration tower structure schematic diagram of the utility model:
Wherein, 1 is tower body, and 2 be air inlet, and 3 be leakage fluid dram, and 4 be sewage draining exit, and 5 be liquid outlet, and 6 be circulating pump, and 7 be benefit
Liquid mouth, 8 be packing layer, and 9 be lower jet pipe, and 10 be demisting foam layer, and 11 be Flushing nozzle, and 12 be gas outlet.
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.
Demercuration tower provided by the utility model is as shown in Figure 1.Demercuration tower mainly includes tower body 1.It is set at the top of the tower body
Have a gas outlet 12, middle and lower part is equipped with air inlet 2, flue gas in tower body 1 from the bottom to top.The intracorporal top of tower is equipped with two layers of packing layer
8, packing layer is accumulated by light hollow bead or Raschig ring, and the top of top layer's packing layer is equipped with lower jet pipe 9, the lower spray
It is equipped with demisting foam layer 10 above pipe 9, is equipped with Flushing nozzle 11 above demisting foam layer out.Flue gas first passes through packing layer, and packing layer can
Disperse thin foam with the demercuration slurries for spraying lower jet pipe, greatly improves time of contact and contact surface of the demercuration slurries to flue gas
Product realizes the deep removal to mercury metal in flue gas.Demisting foam layer is mainly used for retaining the foam of flue gas entrainment, and Flushing nozzle is logical
Crossing sprinkling aqueous solution makes inside foam return to tower body, prevents the loss of demercuration slurries.The outside of tower body is equipped with circulating pump 6, follows
Ring pump 6 is connect by circulating line with the lower jet pipe 9 of the liquid outlet 5 of tower body lower part and tower bottom top, and demercuration slurries are filled in tower
Internal portion is mainly promoted to the lower jet pipe 9 on tower body top by the circulating pump 6 outside tower body, realizes demercuration slurries to golden in flue gas
Belong to the cyclic absorption of mercury.Tower body middle and lower part is equipped with fluid infusion 7 and leakage fluid dram 3, and 7 level height of fluid infusion is higher than leakage fluid dram 3 and sets
It sets, the level height of fluid infusion 7 is lower than the air inlet 2 of tower body.The demercuration slurries newly prepared enter inside tower body from fluid infusion 7,
Packed height is greater than or equal to leakage fluid dram 3, is less than or equal to fluid infusion 7, and Adsorption of Mercury reaches the demercuration slurries of saturation from leakage fluid dram 3
Discharge, is able to maintain the demercuration ability with higher of demercuration slurries in tower body.The level height of fluid infusion 7 will be lower than air inlet 2
Setting, being conducive to flue gas can smoothly enter into demercuration tower, and demercuration tower bottom is equipped with sewage draining exit 4, and sewage draining exit is for periodically clearing up in tower
Precipitating accumulation object.The direct emission after demercuration tower treated flue gas is up to standard.
Embodiment 1
The present embodiment uses a kind of metal smelt flue gas demercuration tower, with macromolecule demercuration material for main absorption and chelating
The material of Adsorption of Mercury, specifically includes the following steps:
(1) mercury content to be processed is no more than 7.0mg/m3Mercurous flue gas during smelting introduces in demercuration tower, with certain mass
The macromolecule demercuration material circulation slurries of concentration 15% carry out gas-liquid contact and absorption and chelatropic reaction occur, by heavy metal Hg and height
Molecule demercuration material is firmly combined together, and demercuration rate is 93% 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 demercuration top of tower gas
Outlet is expelled to outside battery limit (BL).
Embodiment 2
The present embodiment uses a kind of metal smelt flue gas demercuration tower, is main with macromolecule demercuration material compounding organic sulfur
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 10.0mg/m3Mercurous flue gas during smelting introduces in demercuration tower, with certain mass
The macromolecule demercuration material circulation slurries of concentration 20% carry out gas-liquid contact and absorption and chelatropic reaction occur, by heavy metal Hg and height
Molecule demercuration material is firmly combined together, 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 demercuration top of tower gas
Outlet is expelled to outside battery limit (BL).
Claims (7)
1. a kind of metal smelt flue gas demercuration tower, it is characterised in that: main body includes tower body (1)；
The top of the tower body is equipped with gas outlet (12), and middle and lower part is equipped with air inlet (2), and lower part is equipped with liquid outlet (5)；
The intracorporal top of tower is equipped with two layers of packing layer (8), is equipped with lower jet pipe (9) above described filler layer；
The outside of the tower body is equipped with circulating pump (6), and circulating pump passes through the liquid outlet and demercuration tower of circulating line and tower body lower part
The lower jet pipe on top connects；
Demisting foam layer (10) are equipped with above the lower jet pipe；The top of the demisting foam layer is equipped with Flushing nozzle (11)；
Described filler layer is made of hollow sphere or Raschig ring.
2. a kind of metal smelt flue gas demercuration tower according to claim 1, it is characterised in that: the tower body middle and lower part is equipped with
Fluid infusion (7) and leakage fluid dram (3), and fluid infusion (7) level height is arranged higher than leakage fluid dram (3).
3. a kind of metal smelt flue gas demercuration tower according to claim 2, it is characterised in that: the water of the fluid infusion (7)
Flat height is lower than the air inlet (2) of tower body.
4. a kind of metal smelt flue gas demercuration tower according to claim 1, it is characterised in that: be filled with inside the tower body
Demercuration slurries.
5. a kind of metal smelt flue gas demercuration tower according to claim 4, it is characterised in that: the demercuration inside the tower body
Slurries packed height is less than or equal to fluid infusion (7), and is greater than or equal to leakage fluid dram (3).
6. a kind of metal smelt flue gas demercuration tower according to claim 1, it is characterised in that: the demisting foam layer is silk screen
Shape structure.
7. a kind of metal smelt flue gas demercuration tower according to claim 1, it is characterised in that: the tower body lower part is equipped with row
Dirty mouth (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820499774.7U CN208465611U (en) | 2018-04-10 | 2018-04-10 | A kind of metal smelt flue gas demercuration tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820499774.7U CN208465611U (en) | 2018-04-10 | 2018-04-10 | A kind of metal smelt flue gas demercuration tower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208465611U true CN208465611U (en) | 2019-02-05 |
Family
ID=65206148
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820499774.7U Active CN208465611U (en) | 2018-04-10 | 2018-04-10 | A kind of metal smelt flue gas demercuration tower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208465611U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112755764A (en) * | 2020-12-16 | 2021-05-07 | 中南大学 | Stable suspension system for removing mercury in flue gas and recovery method thereof |
-
2018
- 2018-04-10 CN CN201820499774.7U patent/CN208465611U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112755764A (en) * | 2020-12-16 | 2021-05-07 | 中南大学 | Stable suspension system for removing mercury in flue gas and recovery method thereof |
| CN112755764B (en) * | 2020-12-16 | 2021-10-19 | 中南大学 | Stable suspension system for removing mercury in flue gas and recovery method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202725017U (en) | Waste gas treatment system for rubber factor | |
| CN105727720A (en) | Spiral bubble flue gas cleaning device | |
| CN204816222U (en) | Air purification filter screen | |
| CN108479348A (en) | A kind of novel environment friendly emission-control equipment | |
| CN206746314U (en) | A kind of foul gas processing unit | |
| CN209392989U (en) | A kind of integral activated carbon adsorption/desorption waste gas treatment equipment | |
| CN109224741A (en) | Integral dedusting desulfurizing tower | |
| CN206793295U (en) | A kind of industrial mix waste gas processing equipment | |
| CN208465611U (en) | A kind of metal smelt flue gas demercuration tower | |
| CN206372683U (en) | A kind of sewage plant waste gas collection device | |
| CN205638639U (en) | A waste heat recovery processing apparatus for containing nitrogen dioxide tail gas | |
| CN208553727U (en) | A kind of loop slurry mercury removal device for flue gas during smelting demercuration | |
| CN213853744U (en) | Coal chemical production dust exhaust gas purification device | |
| CN103961997A (en) | Process for recycling exhaust gas from ammonium metavanadate roasting furnace | |
| CN208161361U (en) | A kind of metal smelt flue gas mercury removal device | |
| CN208320448U (en) | A kind of device removing mercury metal in metal smelt mercury fume | |
| CN208799940U (en) | A kind of system removing mercury metal in metal smelt flue gas | |
| CN208340490U (en) | A kind of oxidation for flue gas during smelting demercuration-absorption joint mercury removal device | |
| CN209475902U (en) | A kind of furniture processing japanning room exhaust treatment system | |
| CN205323459U (en) | Plumbous cigarette purifier of high performance battery | |
| CN208512263U (en) | A kind of lead-zinc smelting flue gas depth mercury removal device | |
| CN215539649U (en) | A exhaust treatment device for mill's spray booth | |
| CN102240491A (en) | Device for purifying suspended particles and inorganic gases in gas | |
| CN206823517U (en) | A kind of Novel flue gas desulfuration absorbing tower | |
| CN208449020U (en) | A kind of equipment of polluted gas flowing liquid membrane processing |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |