CN204490973U - A kind of new copper refining furnace full-oxygen combustion system - Google Patents
A kind of new copper refining furnace full-oxygen combustion system Download PDFInfo
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- CN204490973U CN204490973U CN201520179948.8U CN201520179948U CN204490973U CN 204490973 U CN204490973 U CN 204490973U CN 201520179948 U CN201520179948 U CN 201520179948U CN 204490973 U CN204490973 U CN 204490973U
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Abstract
The utility model discloses a kind of new copper refining furnace full-oxygen combustion system, comprise system of fuel lines, combustion-supporting air pipe system, refining furnace and Controlling System, described system of fuel lines comprises the fuel conduit for providing fuel, be located at the fuel control valve on described fuel tube, described combustion-supporting air pipe system comprises for providing purity to be the pure oxygen pipeline of 85% ~ 99.9% oxygen and the oxygen valve be located on described pure oxygen pipeline, described refining furnace offers burner, what described burner was provided with fuel inlet and was positioned on described fuel inlet excircle multiplely helps fuel gas inlet, described fuel tube is connected to the described fuel inlet place on described refining furnace, described pure oxygen pipeline is connected to the described combustion-supporting gas ingress on described refining furnace, this firing system structure is simple, fuel combustion is abundant, require greatly to reduce to the refractory materials in refining furnace, and without the need to increasing cooling apparatus and denitration device, greatly save production cost, reduce the pollution to environment simultaneously.
Description
Technical field
the utility model relates to a kind of new copper refining furnace full-oxygen combustion system, is widely used in all kinds of copper concentrate grade, as reverberatory furnace, rotary kiln, tilting furnace etc.
Background technology
at present, all kinds of copper concentrate grade such as reverberatory furnace is widely used in the smelting of non-ferrous metal, the melting of such as copper, along with international energy supply is becoming tight and the growing to even greater heights of energy prices, have higher requirement to the fuel availability in copper weld pool process, environmental requirement simultaneously significantly reduces discharging.At present when copper refining, main employing Sweet natural gas or heavy oil are as fuel, adopt Sweet natural gas as fuel, whole service cost is greatly increased, and adopt heavy oil as fuel, air as combustion-supporting gas time, because in air, oxygen level is low, causing fuel to burn in combustion insufficient, exhaust gas volumn is high, also can produce more NO when burning simultaneously
x
, make also to need to increase denitration device in fusion process, add running cost.According to pure oxygen as the combustion-supporting gas of routine, then in combustion, though reduce the discharge of exhaust gas volumn, but the temperature in stove can be caused too high, need cooling apparatus be increased, the refractory materials in refining furnace be had higher requirement simultaneously, and whole service cost can be made equally to greatly increase, therefore, improving fuel availability, reduce production cost, reducing the pollution of environment is the target that those skilled in the art continue to pursue.
Summary of the invention
the purpose of this utility model is to provide a kind of new copper refining furnace full-oxygen combustion system, and its structure is simple, fuel availability is high, environmental pollution is little, and maintenance of the equipment workload is little.
for achieving the above object, the technical solution adopted in the utility model is: a kind of new copper refining furnace full-oxygen combustion system, comprise system of fuel lines, combustion-supporting air pipe system, refining furnace and Controlling System, described system of fuel lines comprises the fuel conduit for providing fuel, be located at the fuel control valve on described fuel conduit, described combustion-supporting air pipe system comprises for providing purity to be the pure oxygen pipeline of 85% ~ 99.9% oxygen and the oxygen valve be located on described pure oxygen pipeline, described refining furnace offers burner, what described burner was provided with fuel inlet and was positioned on described fuel inlet excircle multiplely helps fuel gas inlet, described fuel conduit is connected to the described fuel inlet place on described refining furnace, described pure oxygen pipeline is connected to the described combustion-supporting gas ingress on described refining furnace.
preferably, the described fuel of described fuel conduit conveying is heavy oil.
preferably, described combustion-supporting air pipe system also comprises for the pressure lock providing compressed-air actuated airline and be located on described airline, and described pressurized air passes in described refining furnace before described fuel inlet with after described fuel mix.
further preferably, described system of fuel lines also comprises the heating unit be located at for heating described fuel on described fuel conduit.
further preferably, described system of fuel lines also comprises vapour line, before described vapour line is connected to the described fuel control valve on described fuel conduit, for being atomized described fuel, being incubated.
preferably, the nozzle on described refining furnace is total oxygen nozzle.
preferably, described firing system also comprises and is located at the burning torch at described fuel inlet place and the ultraviolet flame checking unit for detecting ignition conditions.
further preferably, the pipeline pressure on described fuel conduit before described fuel control valve controls at 0.8 ~ 1.0MPa.
still more preferably, the pipeline pressure on described pure oxygen pipeline before described oxygen valve controls at 0.2 ~ 0.3MPa.
further preferably, the pipeline pressure in described vapour line controls at 0.3 ~ 0.6MPa.
due to the utilization of technique scheme, the utility model compared with prior art has following advantages: copper concentrate grade full-oxygen combustion system of the present utility model, carrying out combustion-supporting changing into by adopting blast air or pressurized air in prior art all adopts 85% ~ 99.9% oxygen to carry out combustion-supporting, fuel combustion is obtained more abundant, fuel conduit and combustion-supporting air pipe are divided into two-way simultaneously and enter refining furnace, and make pure oxygen ejection at a high speed in refining furnace from the excircle direction of fuel inlet, entrainment inner flue gas of the stove, reduce in-furnace temperature, require greatly to reduce to the refractory materials in stove, and without the need to increasing cooling system in addition, working method is simple, adopt pure oxygen as combustion-supporting gas simultaneously, NO after burning
x
discharge significantly reduces, and without the need to denitration device, greatly reduces the cost of investment of whole firing system.
Accompanying drawing explanation
accompanying drawing 1 is new copper refining furnace full-oxygen combustion system described in the utility model;
wherein: 1, fuel conduit; 2, pure oxygen pipeline; 3, vapour line; 4, airline; 5, heating unit (heavy-oil electric heater); 6, refining furnace (reverberatory furnace); 7, burner; 8, metallic hose; 11, fuel control valve; 21, oxygen valve; 31 steam valves; 32, the first reverse checkvalve; 41, pressure lock; 42, the second reverse checkvalve; 71, fuel inlet; 72, fuel gas inlet is helped.
Embodiment
below in conjunction with drawings and the specific embodiments, the technical solution of the utility model is further elaborated.
shown in Figure 1, a kind of new copper refining furnace full-oxygen combustion system, comprises system of fuel lines, combustion-supporting air pipe system, refining furnace 6 and Controlling System.In the present embodiment, refining furnace 6 have employed reverberatory furnace 6.System of fuel lines comprises the fuel conduit 1 for providing fuel, be located at the heating unit 5 for heating fuel on fuel conduit 1, to be located on fuel conduit 1 and fuel control valve 11 after being positioned at heating unit 5, in the present embodiment, this fuel is heavy oil, this heating unit 5 is heavy-oil electric heater 5, temperature after fuel heating should more than 100 DEG C, Sweet natural gas can certainly be adopted as fuel, when being fuel as adopted Sweet natural gas, then without the need to adopting heating unit, this fuel conduit 1 system also comprises for being atomized the fuel in fuel conduit 1 and playing the vapour line 3 of insulation effect, in the present embodiment, this vapour line 3 is connected between electric heater 5 on fuel conduit 1 and fuel control valve 11, and this vapour line 3 is also provided with steam valve 31 and the first reverse checkvalve 32.This vapour line 3 also under system shutdown state or initial launch time, the astatki in fuel conduit 1 is purged, prevent fuel block burner 7.
combustion-supporting air pipe system comprises for providing purity to be the pure oxygen pipeline 2 of 85% ~ 99.9% oxygen and being located at oxygen valve 21 on pure oxygen pipeline 2, for the pressure lock 41 providing compressed-air actuated airline 4 and be located on airline 4, described airline 4 is also provided with the second reverse checkvalve 42, during melting, according to practical situation, select whether need to provide pressurized air to carry out combustion-supporting, also by changing its flow adjustment combustion flame length.Reverberatory furnace 6 offers total oxygen burner 7, this burner 7 is positioned at its axial line to be provided with fuel inlet 71, to be positioned at the excircle of fuel inlet 71 and to be provided with and multiplely to help fuel gas inlet 72, fuel enters in reverberatory furnace 6 by fuel inlet 71 after heating, and pure oxygen sprays in reverberatory furnace 6 by helping fuel gas inlet 72, this helps fuel gas inlet 72 to adopt oxygen lance.And when pressurized air need be passed into, then pressurized air passes in reverberatory furnace 6 after mixing with the fuel after heating before fuel inlet 71, in the present embodiment, when considering that body of heater rotates, pipeline is easy to connect, simultaneously for the ease of maintenance, between fuel conduit 1 with fuel inlet 71, pure oxygen pipeline 2 is all connected by metallic hose 8 with helping between fuel gas inlet 72.
this firing system also comprises the burning torch (not shown) of being located at fuel inlet 71 place and the ultraviolet flame checking unit (not shown) for detecting ignition conditions, reverberatory furnace 6 also offers the porthole for observing reverberatory furnace 6 fuel combustion situation, by observing flame conditions, the ratio of fuel metering and oxygen.
when adopting heavy oil to carry out melting as fuel, the pipeline pressure that pipeline pressure on fuel conduit 1 before fuel control valve 11 controls in 0.8 ~ 1.0MPa, vapour line 3 controls at 0.3 ~ 0.6MPa, and the pipeline pressure on pure oxygen pipeline before oxygen valve 21 controls at 0.2 ~ 0.3MPa.During melting, fuel is undertaken heating to being not less than 100 DEG C by heavy-oil electric heater 5, then pass into steam to carry out being atomized, being incubated, pass in reverberatory furnace 6 with lower speed from the fuel inlet 71 burner 7 axial line after mixing with pressurized air before entering reverberatory furnace 6, pure oxygen then enters in reverberatory furnace 6 from fuel gas inlet 72 high-velocity jet that helps fuel inlet 71 weeks sidepieces, entrainments inner flue gas of the stove, reduces in-furnace temperature, and cooling itself, without the need to increasing cooling apparatus in addition.
new copper refining furnace full-oxygen combustion system described in the utility model, by adopting heavy oil as fuel, pure oxygen as combustion-supporting gas, and adopt combustion-supporting gas and fuel to enter mode in reverberatory furnace respectively from different entrances, sprayed at a high speed by pure oxygen, entrainment inner flue gas of the stove, greatly reduce in-furnace temperature, reaching the object of self cooling, without the need to using cooling apparatus, the requirement of the refractory materials in reverberatory furnace also being reduced greatly, and employing comburant oxygen, seldom produce NO
x
, without the need to using denitration device.
above-described embodiment, only for technical conceive of the present utility model and feature are described, its object is to person skilled in the art can be understood content of the present utility model and implement according to this, can not limit protection domain of the present utility model with this.All equivalences done according to the utility model spirit change or modify, and all should be encompassed within protection domain of the present utility model.
Claims (10)
1. a new copper refining furnace full-oxygen combustion system, it is characterized in that: comprise system of fuel lines, combustion-supporting air pipe system, refining furnace and Controlling System, described system of fuel lines comprises the fuel conduit for providing fuel, be located at the fuel control valve on described fuel conduit, described combustion-supporting air pipe system comprises for providing purity to be the pure oxygen pipeline of 85% ~ 99.9% oxygen and the oxygen valve be located on described pure oxygen pipeline, described refining furnace offers burner, what described burner was provided with fuel inlet and was positioned on described fuel inlet excircle multiplely helps fuel gas inlet, described fuel conduit is connected to the described fuel inlet place on described refining furnace, described pure oxygen pipeline is connected to the described combustion-supporting gas ingress on described refining furnace.
2. new copper refining furnace full-oxygen combustion system according to claim 1, is characterized in that: the described fuel of described fuel conduit conveying is heavy oil.
3. new copper refining furnace full-oxygen combustion system according to claim 1 and 2, it is characterized in that: described combustion-supporting air pipe system also comprises for the pressure lock providing compressed-air actuated airline and be located on described airline, and described pressurized air passes in described refining furnace before described fuel inlet with after described fuel mix.
4. new copper refining furnace full-oxygen combustion system according to claim 2, is characterized in that: described system of fuel lines also comprises the heating unit be located at for heating described fuel on described fuel conduit.
5. the new copper refining furnace full-oxygen combustion system according to claim 2 or 4, it is characterized in that: described system of fuel lines also comprises vapour line, before described vapour line is connected to the described fuel control valve on described fuel conduit, for being atomized described fuel, being incubated.
6. new copper refining furnace full-oxygen combustion system according to claim 1, is characterized in that: the nozzle on described refining furnace is total oxygen nozzle.
7. new copper refining furnace full-oxygen combustion system according to claim 1, is characterized in that: described firing system also comprises is located at the burning torch at described fuel inlet place and the ultraviolet flame checking unit for detecting ignition conditions.
8. new copper refining furnace full-oxygen combustion system according to claim 2, is characterized in that: the pipeline pressure on described fuel conduit before described fuel control valve controls at 0.8 ~ 1.0MPa.
9. new copper refining furnace full-oxygen combustion system according to claim 8, is characterized in that: the pipeline pressure on described pure oxygen pipeline before described oxygen valve controls at 0.2 ~ 0.3MPa.
10. new copper refining furnace full-oxygen combustion system according to claim 5, is characterized in that: the pipeline pressure in described vapour line controls at 0.3 ~ 0.6MPa.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520179948.8U CN204490973U (en) | 2015-03-27 | 2015-03-27 | A kind of new copper refining furnace full-oxygen combustion system |
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| CN201520179948.8U CN204490973U (en) | 2015-03-27 | 2015-03-27 | A kind of new copper refining furnace full-oxygen combustion system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104775038A (en) * | 2015-03-27 | 2015-07-15 | 张家港联合铜业有限公司 | Novel copper finery oxy-fuel combustion system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104775038A (en) * | 2015-03-27 | 2015-07-15 | 张家港联合铜业有限公司 | Novel copper finery oxy-fuel combustion system |
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