CN208414510U - The system for handling Copper making process middle ring collection flue gas - Google Patents
The system for handling Copper making process middle ring collection flue gas Download PDFInfo
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- CN208414510U CN208414510U CN201820917896.3U CN201820917896U CN208414510U CN 208414510 U CN208414510 U CN 208414510U CN 201820917896 U CN201820917896 U CN 201820917896U CN 208414510 U CN208414510 U CN 208414510U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
The utility model discloses a kind of systems for handling Copper making process middle ring collection flue gas, system includes: side blowing smelting furnace, tilting chute and matte melt storage tank, side blowing smelting furnace includes melting furnace body, copper concentrate entrance, overfiren air port, primary air nozzle, smelting slag outlet, matte melt outlet and small grit chamber's exhanst gas outlet, melting space is limited in melting furnace body, melting space includes reaction zone and molten bath area, molten bath area includes smelting zone and decanting zone, smelting zone includes the first molten slag layer and the first melt layer, and decanting zone includes the second molten slag layer；Copper concentrate entrance and overfiren air port are in reaction zone；Primary air nozzle is in the first molten slag layer；Smelting slag outlet and small grit chamber's exhanst gas outlet are in the second molten slag layer；Matte melt outlet is in the first melt layer；Tilting chute is connected with smelting slag outlet, and top sets the first petticoat pipe；Matte melt storage tank is connected with matte melt outlet, and top sets the second petticoat pipe；At least one of first petticoat pipe and the second petticoat pipe are connected with overfiren air port.
Description
Technical field
The utility model belongs to fume treatment field, specifically, the utility model relates to handle Copper making process middle ring
Collect the system of flue gas.
Background technique
Sulfur dioxide is the Air Pollutants in Copper making.In oxygen-enriched side-blowing melting, sulfur dioxide can be in melt
It is spilt into air when pouring out smelting furnace, endangers the health of operator, acidification and corrosion ambient enviroment and building.Cause
It is very necessary to be carried out the processing of ring collection by this for these loss flue gases.However, treated by ring collection for traditional ring collection flue gas treating process
Whole ring collection flue gases are sent into the processing of ring collection desulphurization system, these ring collection flue gas quantity are big, and impurity is more, sulfur dioxide concentration fluctuation
Greatly, processing cost is higher.
Part sulfide is reacted with melting First air meanwhile in oxygen-enriched side-blowing fusion process, in copper concentrate releases big calorimetric,
Another part high sulphide is caused in copper concentrate to be generated elementary sulfur (free sulfur) by thermal decomposition.These free sulfurs volatilize with flue gas
Afterwards, it can reduce and separate with temperature in sulfuric acid purification process.Free sulfur viscosity is larger, is easily bonded in cold between cleaning procedure
On device, the normal production of equipment is hindered.Therefore, oxygen-enriched side-blowing fusion process needs to introduce Secondary Air, using oxygen in Secondary Air with
Chemical reaction occurs for free sulfur to eliminate free sulfur.However, introducing Secondary Air need that secondary blower is arranged, increases production
Equipment and energy cost.
Therefore, the technology of existing processing Copper making process middle ring collection flue gas is further improved.
Utility model content
The utility model is intended to solve at least some of the technical problems in related technologies.For this purpose, this reality
It is to propose a kind of system for handling Copper making process middle ring collection flue gas with a novel purpose.The system eliminates Secondary Air
The use of air blower, the treatment quantity for significantly reducing desulfurizer and the sulfur dioxide for being effectively utilized part ring collection flue gas
Relieving haperacidity, equipment cost reduces, energy consumption reduces, remarkable in economical benefits.
In the one aspect of the utility model, the utility model proposes a kind of processing Copper making process middle ring collection flue gases
System, embodiment according to the present utility model, the system include:
Side blowing smelting furnace, the side blowing smelting furnace include:
Melting furnace body limits melting space in the melting furnace body, and the melting space includes top-down
Reaction zone and molten bath area, the molten bath area include horizontally disposed smelting zone and decanting zone, and the smelting zone includes from top to bottom
The first molten slag layer and the first melt layer, the decanting zone includes top-down second molten slag layer and the second melt layer, described
Baffle is equipped between first molten slag layer and second molten slag layer, and between the bottom end of the baffle and first melt layer
There are distance, first melt layer is connected to second melt layer；
Copper concentrate entrance, the copper concentrate entrance are located at the reaction zone；
Overfiren air port, the overfiren air port are located at the reaction zone；
Primary air nozzle, the primary air nozzle are located at first molten slag layer；
Smelting slag outlet, the smelting slag outlet are located at second molten slag layer；
Matte melt outlet, the matte melt outlet are located at first melt layer；
Small grit chamber's exhanst gas outlet, small grit chamber's exhanst gas outlet are located at second molten slag layer；
Tilting chute, one end of the tilting chute are connected with smelting slag outlet, and above the tilting chute
Equipped with the first petticoat pipe；
Matte melt storage tank, the matte melt storage tank are connected with the matte melt outlet, and the matte melt
The second petticoat pipe is equipped with above storage tank；
Wherein, at least one of first petticoat pipe and second petticoat pipe are connected with the overfiren air port.
According to the system of the processing Copper making process middle ring collection flue gas of the utility model embodiment, because of above tilting chute the
The concentration for the sulfur dioxide in flue gas that the second petticoat pipe is collected above the flue gas and matte melt storage tank that one petticoat pipe is collected is lower,
Thus the flue gas that the second petticoat pipe is collected above the flue gas and/or matte melt storage tank that the first petticoat pipe above tilting chute can be collected
It is back to rich feeding side-blown smelting furnace as Secondary Air, the oxygen in flue gas for making full use of the first petticoat pipe and/or the second petticoat pipe to collect
Part high sulphide decomposes the monomer reaction of Salmon-Saxl generated to eliminate free sulfur in copper concentrate in gas and side blowing smelting furnace, and
Secondary blower need to be configured when introducing Secondary Air compared with the existing technology, the application can cancel making for secondary blower
With reducing the cost of equipment purchase and operation, reduce energy consumption.Meanwhile because the recycling to above-mentioned partial fume is sharp
With significantly reducing the treatment quantity of subsequent desulfurizer, reduce the processing cost of flue gas desulfurization.This is practical new as a result,
Type provides a kind of reforming technology of rich feeding side-blown smelting furnace ring collection fume treatment of tradition, and without additional addition equipment, transformation is difficult
Spend small, cost of investment is low, strong operability, and significant effect.
In addition, can also be had according to the system of the processing Copper making process middle ring collection flue gas of the utility model above-described embodiment
There is following additional technical characteristic:
It is optional, including multiple overfiren air ports, the multiple overfiren air port arrange in the reaction zone horizontal interval.
Be conducive to improve the removal rate and removal effect of free sulfur in side blowing smelting furnace as a result,.
Optional, the system of above-mentioned processing Copper making process middle ring collection flue gas further comprises secondary air channel, described secondary
Air hose includes connected Secondary Air general pipeline and Secondary Air branch pipe, the Secondary Air general pipeline and first petticoat pipe and second cigarette
At least one of cover is connected, and the Secondary Air branch pipe is connected with the overfiren air port.Secondary blower can be cancelled as a result,
It uses.
Optional, the Secondary Air branch pipe and the overfiren air port are corresponded and are arranged.Thus, it can be achieved that it is Secondary Air is total
Secondary Air in pipe is uniformly sent to side blowing smelting furnace.
Optional, the Secondary Air general pipeline and the Secondary Air branch pipe are equipped with stop valve.Be conducive to adjust as a result, and be passed through
The amount of Secondary Air in side blowing smelting furnace.
Optional, the system of above-mentioned processing Copper making process middle ring collection flue gas further comprises: third petticoat pipe, the third
Petticoat pipe is located at the top of the smelting slag outlet；Sulphuric acid plant, the sulphuric acid plant respectively with the third petticoat pipe and described small
Grit chamber's exhanst gas outlet is connected.Thus, it can be achieved that recycling to flue gas and small grit chamber's flue gas in third petticoat pipe, improves production
Benefit.
Optional, the system of above-mentioned processing Copper making process middle ring collection flue gas further comprises: flue gas general pipeline, the flue gas
One end of general pipeline is connected with the third petticoat pipe and small grit chamber's exhanst gas outlet respectively, the other end of the flue gas general pipeline and institute
Sulphuric acid plant is stated to be connected.Be conducive to improve the recovery efficiency to third petticoat pipe flue gas and small grit chamber's flue gas as a result,.
Optional, the system of above-mentioned processing Copper making process middle ring collection flue gas further comprises: multiple cinder ladles, the cinder ladle
It is connected with the other end of the tilting chute, and is equipped with the 4th petticoat pipe above the cinder ladle；Desulfurizer, the desulfurizer
It is connected with the 4th petticoat pipe.Thus, it can be achieved that desulfurization process to the flue gas in the 4th petticoat pipe.
The additional aspect and advantage of the utility model will be set forth in part in the description, partially will be from following description
In become obvious, or recognized by the practice of the utility model.
Detailed description of the invention
The above-mentioned and/or additional aspect and advantage of the utility model from the description of the embodiment in conjunction with the following figures will
Become obvious and be readily appreciated that, in which:
Fig. 1 is the system structure signal according to the processing Copper making process middle ring collection flue gas of the utility model one embodiment
Figure；
Fig. 2 is shown according to the system structure of the processing Copper making process middle ring collection flue gas of the utility model further embodiment
It is intended to；
Fig. 3 is shown according to the system structure of the processing Copper making process middle ring collection flue gas of the utility model another embodiment
It is intended to；
Fig. 4 is shown according to the system structure of the processing Copper making process middle ring collection flue gas of the utility model another embodiment
It is intended to.
Specific embodiment
The embodiments of the present invention are described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning
Same or similar element or element with the same or similar functions are indicated to same or similar label eventually.Below by ginseng
The embodiment for examining attached drawing description is exemplary, it is intended to for explaining the utility model, and should not be understood as to the utility model
Limitation.
In the description of the present invention, it should be understood that term " center ", " longitudinal direction ", " transverse direction ", " length ", " width
Degree ", " thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside",
The orientation or positional relationship of the instructions such as " clockwise ", " counterclockwise ", " axial direction ", " radial direction ", " circumferential direction " is based on the figure
Orientation or positional relationship is merely for convenience of describing the present invention and simplifying the description, rather than the dress of indication or suggestion meaning
It sets or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as to the utility model
Limitation.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include at least one this feature.The meaning of " plurality " is at least two, such as two in the description of the present invention,
It is a, three etc., unless otherwise specifically defined.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " Gu
It is fixed " etc. terms shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；It can be
Mechanical connection, is also possible to be electrically connected；It can be directly connected, two can also be can be indirectly connected through an intermediary
The interaction relationship of connection or two elements inside element, unless otherwise restricted clearly.For the common skill of this field
For art personnel, the concrete meaning of above-mentioned term in the present invention can be understood as the case may be.
In the present invention unless specifically defined or limited otherwise, fisrt feature is in the second feature " on " or " down "
It can be that the first and second features directly contact or the first and second features are by intermediary mediate contact.Moreover, first is special
Sign can be fisrt feature above the second feature " above ", " above " and " above " and be directly above or diagonally above the second feature, or only
Indicate that first feature horizontal height is higher than second feature.Fisrt feature under the second feature " below ", " below " and " below " can be with
It is that fisrt feature is directly under or diagonally below the second feature, or is merely representative of first feature horizontal height less than second feature.
In the one aspect of the utility model, the utility model proposes a kind of processing Copper making process middle ring collection flue gases
System, embodiment according to the present utility model, with reference to Fig. 1-2, which includes: side blowing smelting furnace 100, tilting chute
200 and matte melt storage tank 300.
Embodiment according to the present utility model, side blowing smelting furnace 100 include: melting furnace body 11, copper concentrate entrance
101, overfiren air port 102, primary air nozzle 103, smelting slag outlet 104, matte melt outlet 105 and small grit chamber's exhanst gas outlet 106.
One embodiment according to the present utility model limits melting space 12, melting space 12 in melting furnace body 11
Including top-down reaction zone 13 and molten bath area 14, molten bath area 14 includes horizontally disposed smelting zone 15 and decanting zone 16, is melted
Refining area 15 includes top-down first molten slag layer 151 and the first melt layer 152, and decanting zone 16 includes top-down second molten
Slag blanket 161 and the second melt layer 162 are equipped with baffle 17, and baffle 17 between first molten slag layer 151 and the second molten slag layer 161
Bottom end and the first melt layer 152 between there are distance, the first melt layer 152 is connected to the second melt layer 162, copper concentrate entrance
101 and overfiren air port 102 be located at reaction zone 13, primary air nozzle 103 is located at the first molten slag layer 151, and smelting slag outlet 104 is located at the
Two molten slag layers 161, matte melt outlet 105 are located at the first melt layer 152, and small grit chamber's exhanst gas outlet 106 is located at the second molten slag layer
161, and be suitable for copper concentrate carrying out melting processing under the action of First air and Secondary Air, it is molten to obtain smelting slag, matte
Body and small grit chamber's flue gas.During melting, slag floats on above copper concentrate, and resulting melt is passed into lower layer, First air
In first molten slag layer, to allow the complete copper concentrate of unreacted in the first molten slag layer, the reaction was continued, to improve gained matte melt
Amount.As the smelting slag in the first molten slag layer after the progress of reaction and First air reaction enters the second molten slag layer, and lead to
Smelting slag outlet discharge side blowing smelting furnace is crossed, and resulting melt is discharged by matte melt outlet.By molten first
Bottom end and the first melt layer are set there are the baffle of distance, it can be achieved that molten in the first molten slag layer between slag blanket and the second molten slag layer
Refining slag enters the second molten slag layer through baffle lower end after further reacting with First air, realizes the direct motion of reaction, protects simultaneously
It is abundant to demonstrate,prove copper concentrate melting as far as possible.
A specific embodiment according to the present utility model, may include multiple overfiren air ports 102, and multiple overfiren air ports
It is arranged in reaction zone horizontal interval.Preferably, multiple overfiren air ports can be in reaction zone horizontal homogeneous arranged for interval.Thus it can guarantee
The Secondary Air in side blowing smelting furnace is passed into more evenly by overfiren air port, so that removing free sulfur in reaction zone
Efficiency and effect are higher.
The system of further embodiment according to the present utility model, above-mentioned processing Copper making process middle ring collection flue gas is further
It (is not regarded out) including secondary air channel.Secondary air channel includes that connected Secondary Air general pipeline (not depending on out) and Secondary Air branch pipe (are not regarded
Out), Secondary Air general pipeline is connected at least one of the first petticoat pipe and the second petticoat pipe, and Secondary Air branch pipe is connected with overfiren air port.
The flue gas in the flue gas and/or the second petticoat pipe in the first petticoat pipe can be shunted by Secondary Air general pipeline and through Secondary Air branch pipe as a result,
It send by overfiren air port to side blowing smelting furnace.It should be noted that Secondary Air branch pipe have it is multiple, multiple Secondary Air branch pipes
Diameter can be equally or different, and the flue gas in the first petticoat pipe and/or the second petticoat pipe is further separated into again from Secondary Air general pipeline
Enter side blowing smelting furnace to Secondary Air branch pipe, and then through overfiren air port.A specific embodiment according to the present utility model,
Secondary Air branch pipe and overfiren air port, which correspond, to be arranged.Thus, it can be achieved that it is the flue gas in the first petticoat pipe and/or the second petticoat pipe is equal
It send evenly to side blowing smelting furnace, improves the removal rate and removal effect of free sulfur in side blowing smelting furnace.
Another embodiment according to the present utility model, Secondary Air general pipeline and Secondary Air branch pipe are equipped with stop valve and (do not regard
Out).Specifically, stop valve only setting one, by controlling the stop valve, can realize the supply of flue gas on Secondary Air general pipeline
And cutting；Stop valve can also be positioned only on Secondary Air branch pipe, by the stop valve on control Secondary Air branch pipe, may be selected each
The opening and closing of Secondary Air branch pipe, and then adjust and enter the direction of Secondary Air and flow inside side blowing smelting furnace.
One end of embodiment according to the present utility model, tilting chute 200 is connected with smelting slag outlet 104, and verts
The first petticoat pipe 21 is equipped with above chute 200.Matte melt storage tank 300 is connected with matte melt outlet 105, and matte melt stores up
The second petticoat pipe 31 is equipped with above tank 300.Wherein, at least one of the first petticoat pipe 21 and the second petticoat pipe 31 and overfiren air port 102
It is connected.Specifically, after the smelting slag outlet discharge of smelting slag, through being discharged outside tilting chute, and in the process of operating smelting slag
In, the first petticoat pipe can be set above tilting chute, thus collect tilting chute because operating smelting slag due to bring flue gas, this
The concentration of partial fume sulfur dioxide is lower, can be back to side blowing smelting furnace and use as Secondary Air.Oxygen-enriched side-blowing melting
The resulting matte melt of furnace send to matte melt storage tank after the discharge of matte melt outlet and stores, and can also take many cigarettes out of at this time
Gas, can be by the fume collection above matte melt storage tank, this part by the second petticoat pipe being arranged in above matte melt storage tank
The concentration of the sulfur dioxide of flue gas is lower, can also equally be back to side blowing smelting furnace and use as Secondary Air.It needs to illustrate
, the flue gas in flue gas and the second petticoat pipe in the first petticoat pipe can both be back to oxygen-enriched side-blowing melting respectively as Secondary Air
Furnace is back to side blowing smelting furnace after can also mixing two parts flue gas together again.
According to the system of the processing Copper making process middle ring collection flue gas of the utility model embodiment, because of above tilting chute the
The concentration for the sulfur dioxide in flue gas that the second petticoat pipe is collected above the flue gas and matte melt storage tank that one petticoat pipe is collected is lower,
Thus the flue gas that the second petticoat pipe is collected above the flue gas and/or matte melt storage tank that the first petticoat pipe above tilting chute can be collected
It is back to rich feeding side-blown smelting furnace as Secondary Air, the oxygen in flue gas for making full use of the first petticoat pipe and/or the second petticoat pipe to collect
Part high sulphide decomposes the monomer reaction of Salmon-Saxl generated to eliminate free sulfur in copper concentrate in gas and side blowing smelting furnace, and
Secondary blower need to be configured when introducing Secondary Air compared with the existing technology, the application can cancel making for secondary blower
With reducing the cost of equipment purchase and operation, reduce energy consumption.Meanwhile because the recycling to above-mentioned partial fume is sharp
With significantly reducing the treatment quantity of subsequent desulfurizer, reduce the processing cost of flue gas desulfurization.This is practical new as a result,
Type provides a kind of reforming technology of rich feeding side-blown smelting furnace ring collection fume treatment of tradition, and without additional addition equipment, transformation is difficult
Spend small, cost of investment is low, strong operability, and significant effect.
Embodiment according to the present utility model, with reference to Fig. 3, the system of above-mentioned processing Copper making process middle ring collection flue gas is into one
Step includes third petticoat pipe 41 and sulphuric acid plant 400, and third petticoat pipe 41 is located at the top of smelting slag outlet 104, and sulphuric acid plant 400 divides
Be not connected with third petticoat pipe 41 and small grit chamber's exhanst gas outlet 106, and be suitable for by third petticoat pipe flue gas and small grit chamber's flue gas into
Row relieving haperacidity processing.The concentration of the SO 2 from fume in smelting slag exit is higher, after the collection of third petticoat pipe, can be used for relieving haperacidity.
The sulfur dioxide concentration of small grit chamber's flue gas is also higher, is equally applicable to relieving haperacidity.Flue gas at above-mentioned two is used for relieving haperacidity, it can be significant
Improve the economic benefit of enterprise.One embodiment according to the present utility model, above-mentioned processing Copper making process middle ring collection flue gas
System further comprises flue gas general pipeline, and one end of flue gas general pipeline is connected with third petticoat pipe and small grit chamber's exhanst gas outlet respectively, flue gas
The other end of general pipeline is connected with sulphuric acid plant.It can be more convenient for realizing the relieving haperacidity of flue gas and small grit chamber's flue gas in third petticoat pipe as a result,
Improve the economic benefit of enterprise.
Embodiment according to the present utility model, with reference to Fig. 4, the system of above-mentioned processing Copper making process middle ring collection flue gas is into one
Step includes multiple cinder ladles 500 and desulfurizer 600, and cinder ladle 500 is connected with the other end of tilting chute 200, and on cinder ladle 500
Side is equipped with the 4th petticoat pipe 51, and desulfurizer 600 is connected with the 4th petticoat pipe 51, and is suitable for the flue gas in the 4th petticoat pipe above cinder ladle
Supply carries out desulfurization process into desulfurizer.Specifically, smelting slag transfers to cinder ladle through tilting chute, when a cinder ladle is filled
After shift to another cinder ladle, the concentration of the sulfur dioxide of the flue gas above cinder ladle is low, can through the 4th petticoat pipe collection after carry out desulfurization
It handles, it can direct outlet after the flue gas after desulfurization process is up to standard.Compared to existing by desulfurization process after all flue gas ring collection
Scheme, the exhaust gas volumn that the scheme of the application carries out desulfurization process substantially reduces, and the fluctuation of concentration of sulfur dioxide is small, processing cost
It is low.Inventors have found that smelting slag exports and small grit chamber is because it directly connect with furnace body, so that the sulfur dioxide in the flue gas at two
Concentration highest；When being flowed to inside tilting chute because of smelting slag by fixed slag chute, it may occur that cross reaction, so that the first petticoat pipe
The sulfur dioxide concentration of middle flue gas takes second place, and the flue gas difference in the second petticoat pipe in the sulfur dioxide concentration of flue gas and the first petticoat pipe is not
It is more；Flue gas in 4th petticoat pipe, the sulfur dioxide that Yin Qinei contains are to evaporate from smelting slag, and petticoat pipe is on cinder ladle
Side, be not it is closed, so as to cause a large amount of air can be mixed into flue gas so that in the 4th petticoat pipe flue gas sulfur dioxide
Concentration is minimum.The concentration of contained sulfur dioxide is lower in then flue gas more remote from side blowing smelting furnace i.e. in process.
In order to facilitate understanding, processing copper smelting is implemented to the system using above-mentioned processing Copper making process middle ring collection flue gas below
The method of refining process middle ring collection flue gas is described in detail, embodiment according to the present utility model, this method comprises:
S100: the flue gas in the flue gas and/or the second petticoat pipe in the first petticoat pipe is supplied and is made into side blowing smelting furnace
For Secondary Air use
In the step, melting is carried out specifically, supplying copper concentrate, First air and Secondary Air into side blowing smelting furnace
Processing, exports to obtain smelting slag, matte melt and small grit chamber's flue gas, smelting slag through tilting chute, and above tilting chute
Flue gas collected by the first petticoat pipe, matte melt is stored by matte melt storage tank, and the flue gas above matte melt storage tank is by the
Two petticoat pipes are collected, and then supply the flue gas in the flue gas and/or the second petticoat pipe in the first petticoat pipe into side blowing smelting furnace
It is used as Secondary Air.Inventors have found that the concentration of the sulfur dioxide of flue gas is lower in the first petticoat pipe and the second petticoat pipe, oxygen contains
Amount is higher, thus the flue gas in the flue gas and/or the second petticoat pipe in the first petticoat pipe can be back to oxygen-enriched side-blowing as Secondary Air
Smelting furnace significantly reduces the amount of the flue gas of subsequent desulfurization process, reduces the cost of subsequent desulfurization process, while relative to existing skill
Art can also cancel the use of post-blast machine, reduce the cost of equipment purchase and equipment operation.
According to the method for the processing Copper making process middle ring collection flue gas of the utility model embodiment, because of above tilting chute the
The concentration for the sulfur dioxide in flue gas that the second petticoat pipe is collected above the flue gas and matte melt storage tank that one petticoat pipe is collected is lower,
Thus the flue gas that the second petticoat pipe is collected above the flue gas and/or matte melt storage tank that the first petticoat pipe above tilting chute can be collected
It is back to rich feeding side-blown smelting furnace as Secondary Air, the oxygen in flue gas for making full use of the first petticoat pipe and/or the second petticoat pipe to collect
Part high sulphide decomposes the monomer reaction of Salmon-Saxl generated to eliminate free sulfur in copper concentrate in gas and side blowing smelting furnace, and
Secondary blower need to be configured when introducing Secondary Air compared with the existing technology, the application can cancel making for secondary blower
With reducing the cost of equipment purchase and operation, reduce energy consumption.Meanwhile because the recycling to above-mentioned partial fume is sharp
With significantly reducing the treatment quantity of subsequent desulfurizer, reduce the processing cost of flue gas desulfurization.This is practical new as a result,
Type provides a kind of reforming technology of rich feeding side-blown smelting furnace ring collection fume treatment of tradition, and without additional addition equipment, transformation is difficult
Spend small, cost of investment is low, strong operability, and significant effect.
The method of embodiment according to the present utility model, above-mentioned processing Copper making process middle ring collection flue gas further comprises:
S200: by third petticoat pipe flue gas and small grit chamber's flue gas supply into sulphuric acid plant carry out relieving haperacidity processing
In the step, by third petticoat pipe flue gas and small grit chamber's flue gas supply into sulphuric acid plant carry out relieving haperacidity processing.
Inventors have found that the sulfur dioxide concentration in flue gas and small grit chamber's flue gas in third petticoat pipe is higher, it can be used for relieving haperacidity, from
And reach the classification processing to flue gas, flue gas everywhere in copper concentrate smelting process has been made full use of, subsequent desulfurization can be both reduced
The exhaust gas volumn of processing, and additional economic interests, compared with prior art, significant effect can be brought for enterprise.
The method of embodiment according to the present utility model, above-mentioned processing Copper making process middle ring collection flue gas further comprises:
S300: the flue gas in the 4th petticoat pipe is supplied into desulfurizer and carries out desulfurization process
In the step, smelting slag is supplied through tilting chute to cinder ladle, can supply the flue gas in the 4th petticoat pipe above cinder ladle
To carrying out desulfurization process into desulfurizer.Specifically, smelting slag transfers to cinder ladle through tilting chute, after a cinder ladle is filled
Another cinder ladle is shifted to, the concentration of the sulfur dioxide of the flue gas above cinder ladle is low, can carry out at desulfurization after the collection of the 4th petticoat pipe
It manages, it can direct outlet after the flue gas after desulfurization process is up to standard.Compared to the existing side by desulfurization process after all flue gas ring collection
Case, the exhaust gas volumn that the scheme of the application carries out desulfurization process substantially reduces, and the fluctuation of concentration of sulfur dioxide is small, processing cost
It is low.Inventors have found that smelting slag exports and small grit chamber is because it directly connect with furnace body, so that the sulfur dioxide in the flue gas at two
Concentration highest；When being flowed to inside tilting chute because of smelting slag by fixed slag chute, it may occur that cross reaction, so that the first petticoat pipe
The sulfur dioxide concentration of middle flue gas takes second place, and the flue gas difference in the second petticoat pipe in the sulfur dioxide concentration of flue gas and the first petticoat pipe is not
It is more；Flue gas in 4th petticoat pipe, the sulfur dioxide that Yin Qinei contains are to evaporate from smelting slag, and petticoat pipe is on cinder ladle
Side, be not it is closed, so as to cause a large amount of air can be mixed into flue gas so that in the 4th petticoat pipe flue gas sulfur dioxide
Concentration is minimum.The concentration of contained sulfur dioxide is lower in then flue gas more remote from side blowing smelting furnace i.e. in process.It needs
Bright, the feature and advantage of the above-mentioned system for processing Copper making process middle ring collection flue gas are equally applicable to the processing copper smelting
The method of refining process middle ring collection flue gas, details are not described herein again.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is contained at least one embodiment or example of the utility model.In the present specification, to the schematic table of above-mentioned term
It states and is necessarily directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be with
It can be combined in any suitable manner in any one or more of the embodiments or examples.In addition, without conflicting with each other, this field
Technical staff can by the feature of different embodiments or examples described in this specification and different embodiments or examples into
Row combination and combination.
Although the embodiments of the present invention have been shown and described above, it is to be understood that above-described embodiment is
Illustratively, it should not be understood as limiting the present invention, those skilled in the art are in the scope of the utility model
Inside it can make changes, modifications, alterations, and variations to the above described embodiments.
Claims (8)
1. a kind of system for handling Copper making process middle ring collection flue gas characterized by comprising
Side blowing smelting furnace, the side blowing smelting furnace include:
Melting furnace body limits melting space in the melting furnace body, and the melting space includes top-down reaction
Area and molten bath area, the molten bath area include horizontally disposed smelting zone and decanting zone, and the smelting zone includes top-down
One molten slag layer and the first melt layer, the decanting zone include top-down second molten slag layer and the second melt layer, and described first
It is equipped with baffle between molten slag layer and second molten slag layer, and exists between the bottom end of the baffle and first melt layer
Distance, first melt layer are connected to second melt layer；
Copper concentrate entrance, the copper concentrate entrance are located at the reaction zone；
Overfiren air port, the overfiren air port are located at the reaction zone；
Primary air nozzle, the primary air nozzle are located at first molten slag layer；
Smelting slag outlet, the smelting slag outlet are located at second molten slag layer；
Matte melt outlet, the matte melt outlet are located at first melt layer；
Small grit chamber's exhanst gas outlet, small grit chamber's exhanst gas outlet are located at second molten slag layer；
Tilting chute, one end of the tilting chute are connected with smelting slag outlet, and are equipped with above the tilting chute
First petticoat pipe；
Matte melt storage tank, the matte melt storage tank are connected with the matte melt outlet, and the matte melt storage tank
Top is equipped with the second petticoat pipe；
Wherein, at least one of first petticoat pipe and second petticoat pipe are connected with the overfiren air port.
2. system according to claim 1, which is characterized in that including multiple overfiren air ports, the multiple Secondary Air
Mouth is arranged in the reaction zone horizontal interval.
3. system according to claim 2, which is characterized in that further comprise secondary air channel, the secondary air channel includes
In connected Secondary Air general pipeline and Secondary Air branch pipe, the Secondary Air general pipeline and first petticoat pipe and second petticoat pipe extremely
One of few to be connected, the Secondary Air branch pipe is connected with the overfiren air port.
4. system according to claim 3, which is characterized in that the Secondary Air branch pipe and the overfiren air port correspond
Arrangement.
5. system according to claim 3 or 4, which is characterized in that on the Secondary Air general pipeline and the Secondary Air branch pipe
Equipped with stop valve.
6. system according to claim 1, which is characterized in that further comprise:
Third petticoat pipe, the third petticoat pipe are located at the top of the smelting slag outlet；
Sulphuric acid plant, the sulphuric acid plant are connected with the third petticoat pipe and small grit chamber's exhanst gas outlet respectively.
7. system according to claim 6, which is characterized in that further comprise:
Flue gas general pipeline, one end of the flue gas general pipeline are connected with the third petticoat pipe and small grit chamber's exhanst gas outlet respectively, institute
The other end for stating flue gas general pipeline is connected with the sulphuric acid plant.
8. system according to claim 1, which is characterized in that further comprise:
Multiple cinder ladles, the cinder ladle are connected with the other end of the tilting chute, and the 4th petticoat pipe is equipped with above the cinder ladle；
Desulfurizer, the desulfurizer are connected with the 4th petticoat pipe.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820917896.3U CN208414510U (en) | 2018-06-13 | 2018-06-13 | The system for handling Copper making process middle ring collection flue gas |
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| CN201820917896.3U CN208414510U (en) | 2018-06-13 | 2018-06-13 | The system for handling Copper making process middle ring collection flue gas |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110592392A (en) * | 2018-06-13 | 2019-12-20 | 中国瑞林工程技术股份有限公司 | System and method for treating flue gas collected in copper smelting process |
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2018
- 2018-06-13 CN CN201820917896.3U patent/CN208414510U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110592392A (en) * | 2018-06-13 | 2019-12-20 | 中国瑞林工程技术股份有限公司 | System and method for treating flue gas collected in copper smelting process |
| CN110592392B (en) * | 2018-06-13 | 2024-05-17 | 中国瑞林工程技术股份有限公司 | System and method for treating ring-collecting flue gas in copper smelting process |
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