CN210332254U - Desulfurization and dust removal system for aluminum kiln - Google Patents
Desulfurization and dust removal system for aluminum kiln Download PDFInfo
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- CN210332254U CN210332254U CN201921082383.6U CN201921082383U CN210332254U CN 210332254 U CN210332254 U CN 210332254U CN 201921082383 U CN201921082383 U CN 201921082383U CN 210332254 U CN210332254 U CN 210332254U
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Abstract
The utility model discloses an aluminum-ore kiln desulfurization and dust removal system, which comprises an aluminum-ore kiln body, wherein the upper part and the lower part of the outer wall of the aluminum-ore kiln body are respectively provided with a flue and a fresh air pipeline, the upper end of the fresh air pipeline is connected with an air blower, the tail end of the flue is sequentially connected with a primary desulfurization dust removal reaction kettle, a catcher and a secondary desulfurization dust removal reaction kettle, and the lower parts of the primary desulfurization dust removal reaction kettle and the secondary desulfurization dust removal reaction kettle are communicated with a sewage pool; the first-stage desulfurization and dust removal reaction kettle is of a double-layer structure with an annular cavity, and the lower end of the inner shell is inserted below the liquid level of a desulfurizer in the sewage tank when the inner shell works; a guide pipe is arranged in the secondary desulfurization and dust removal reaction kettle, one end of the guide pipe is connected with an inlet of the catcher, and the other end of the guide pipe is inserted below the liquid level of a desulfurizer in the sewage tank; the upper end of the outer wall of the second-stage desulfurization and dust removal reaction kettle is sequentially connected with a desulfurization filter screen, a flue gas and water gas separator, an induced draft fan, a fine dust removal device and a chimney. The utility model discloses whole input low cost, desulfurization dust removal effect is showing, and process is simple, further boosting cleaner production.
Description
The technical field is as follows:
the utility model relates to an aluminum stone kiln flue gas discharging equipment field especially relates to an aluminum stone kiln desulfurization and dust pelletizing system.
Background art:
and carrying out ultralow emission reconstruction on national kilns in 2019. The emission limit of the new boiler is specifically required as follows: 10mg/m of smoke dust particles320mg/m of sulfur dioxide3Nitrogen oxide 50mg mg/m3The kiln is an open structure, the kiln is charged from the front and discharged from the back, and the center is a high-temperature area, so that the oxygen content of the flue gas exceeds the standard (18%), and the calcining process is also open, so that the control of the oxygen content of the flue gas is very important.
The energy consumption of the kiln in China accounts for about 1/3 of industrial energy consumption, the average thermal efficiency of the kiln is about 20 percent lower than that of the kiln abroad, if the energy of the industrial kiln in China is averagely saved by 10 percent, the saved energy is equivalent to 1 hundred million tons of standard coal.
The alumina kiln is the first stage of refractory brick production, and includes roasting alumina ore, crushing, mixing with refractory material, molding, and high temperature calcining. The fume emission of the alumina kiln adopts the traditional cloth bag dust removal and desulfurization tower, and the emission of particulate matters and sulfur dioxide is generally 30mg/m350mg/m of sulfur dioxide3And the high-efficiency dust removal and desulfurization indexes cannot be achieved. The furnace 3100 is owned by China in Henan, the reconstruction investment needs at least 50 hundred million Yuan RMB, the industry does not have ultra-low emission equipment of the aluminum-stone kiln, and designers need to design a set of complete system equipment to change the technical bottleneck that the aluminum-stone kiln in the industry cannot realize ultra-low emission.
The utility model has the following contents:
in order to compensate the not enough of prior art problem, the utility model aims at providing an aluminium stone kiln desulfurization and dust pelletizing system, structural design is novel, very big improvement particulate matter, sulfur dioxide clearance height, can effectively promote the enterprise further to realize ultralow emission, further boosting cleaner production.
The technical scheme of the utility model as follows:
the desulfurization and dust removal system for the aluminum-stone kiln comprises an aluminum-stone kiln body, wherein the upper part and the lower part of the outer wall of the aluminum-stone kiln body are respectively provided with a flue and a fresh air pipeline, and the upper end of the fresh air pipeline is connected with a blower;
the first-stage desulfurization and dust removal reaction kettle body comprises an outer shell and an inner shell, an annular cavity is formed between the inner shell and the outer shell, the lower end of the inner shell is inserted below the liquid level of a desulfurizing agent in the sewage pool when the inner shell works, and flue gas enters the desulfurizing agent in the sewage pool along the inner shell and then escapes into the annular cavity;
a guide pipe is arranged in the secondary desulfurization and dust removal reaction kettle, one end of the guide pipe is connected with an inlet of the catcher, and the other end of the guide pipe is inserted below the liquid level of a desulfurizer in the sewage pool;
the upper end of the outer wall of the second-stage desulfurization and dust removal reaction kettle is sequentially connected with a desulfurization filter screen, flue gas and a water-gas separator, the flue gas and the lower end smoke outlet of the water-gas separator are connected with a fine dust removal device through a pipeline provided with a draught fan, and the air outlet of the fine dust removal device is connected with a chimney.
The aluminum kiln desulfurization and dust removal system is characterized in that the catcher is a variable-diameter catcher, the variable-diameter catcher is formed by connecting a middle cylindrical section and conical sections at two ends, and the connecting sections of the variable-diameter catcher, the first-stage desulfurization and dust removal reaction kettle and the second-stage desulfurization and dust removal reaction kettle are conical sections.
The system for desulfurizing and dedusting the aluminum kiln is characterized in that the first-stage desulfurizing and dedusting reaction kettle and the second-stage desulfurizing and dedusting reaction kettle are wet desulfurizing devices, and the desulfurizing agent is desulfurized by a calcium method, desulfurized by a magnesium method, desulfurized by a sodium method and desulfurized by an ammonia method.
The aluminum kiln desulfurization and dust removal system is characterized in that an inner shell of the primary desulfurization and dust removal reaction kettle is hermetically connected with the top of a kettle body, the inner shell is coaxial with the vertical section of the flue, and the inner diameter of the inner shell is larger than the outer diameter of the vertical section of the flue.
The aluminum kiln desulfurization and dust removal system is characterized in that gas homogenizing plates are uniformly arranged on the inner walls of the parts, inserted into the liquid level, of the inner shell of the first-stage desulfurization and dust removal reaction kettle and the guide pipe of the second-stage desulfurization and dust removal reaction kettle, and the gas homogenizing plates are in a conical cylinder shape.
The aluminum kiln desulfurization and dust removal system is characterized in that the sewage tank comprises a clean water tank and a plurality of adjacent sedimentation tanks, the sedimentation tanks are positioned on one side of the clean water tank, the bottoms of the clean water tank are communicated with the bottoms of the adjacent sedimentation tanks, the bottoms or the tops of the adjacent sedimentation tanks are communicated, and a desulfurizer liquid adding device communicated with the clean water tank is further arranged on one side of the clean water tank.
The aluminum kiln desulfurization and dust removal system is characterized in that the sedimentation tank at the farthest end of the sewage tank from the clean water tank is connected with the first-stage desulfurization and dust removal reaction kettle and the second-stage desulfurization and dust removal reaction kettle, and the liquid level of a desulfurizing agent in the sedimentation tank is higher than the lower end of an inner shell in the first-stage desulfurization and dust removal reaction kettle and the lower end of a guide pipe of the second-stage desulfurization and dust removal reaction kettle during operation.
The aluminum-stone kiln desulfurization and dust removal system is characterized in that a circulating pump is installed in the clear water tank, and a liquid outlet of the circulating pump is respectively connected with a desulfurizing agent liquid inlet above the outer walls of the first-stage desulfurization dust removal reaction kettle and the second-stage desulfurization dust removal reaction kettle through desulfurizing agent conveying pipelines.
The utility model has the advantages that:
1. the utility model discloses it descends to the effluent water sump perpendicularly to take off flue gas from one-level desulfurization dust removal reation kettle, the particulate matter strikes in the effluent water sump, carry out the desulfurization of once removing dust, the flue gas then goes up to turn over in the annular cavity of one-level desulfurization dust removal reation kettle, get into the reducing trapper, the flue gas velocity descends, the desulfurization of secondary dust removal, then the flue gas gets into second grade desulfurization dust removal reation kettle again, well vertical descent to the effluent water sump, carry out the cubic desulfurization dust removal, the flue gas is through the third desulfurization dust removal, then through desulfurization filter screen fourth desulfurization dust removal seizure, accomplish the desulfurization dust removal comprehensively, the desulfurization effect is showing, desulfurization efficiency can reach more than 98.5%;
2. the utility model discloses a multistage desulfurization dust removal structure removes dust and can make dust content drop to 8mg/m3The sulfur dioxide emission is below 15mg/m3The system is stable and reliable, and the cost is low;
3. the utility model discloses whole input low cost, desulfurization dust removal effect is showing, and process is simple, can effectively promote the enterprise further to realize ultralow emission, further boosting cleaner production.
Description of the drawings:
fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic view of the structure of the catcher of the present invention.
Fig. 3 is the structure schematic diagram of the one-level desulfurization dust-removal reaction kettle of the utility model.
Fig. 4 is the structural schematic diagram of the second-stage desulfurization and dust removal reaction kettle of the utility model.
The specific implementation mode is as follows:
in order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to the attached figure 1, the desulfurization and dust removal system for the aluminum-ore kiln comprises an aluminum-ore kiln body 1, wherein the upper part and the lower part of the outer wall of the aluminum-ore kiln body 1 are respectively provided with a flue 2 and a fresh air pipeline 3, the upper tail end of the fresh air pipeline 3 is connected with a blower 4, the tail end of the flue 2 is connected with a flue gas inlet at the top of a primary desulfurization and dust removal reaction kettle 5, the lower part of the outer wall of the primary desulfurization and dust removal reaction kettle 5 is sequentially connected with a catcher 6 and a secondary desulfurization and dust removal reaction kettle 7, and the lower parts of the primary desulfurization and dust removal;
referring to the attached figure 3, the kettle body of the primary desulfurization and dust removal reaction kettle 5 comprises an outer shell 5-1 and an inner shell 5-2, an annular cavity 5-3 is formed between the inner shell 5-1 and the outer shell 5-2, the lower end of the inner shell 5-1 is inserted below the liquid level of a desulfurizing agent in a sewage pool when the inner shell 5-1 works, and flue gas completely enters the desulfurizing agent in the sewage pool along the inner shell 5-1 and then escapes into the annular cavity;
referring to the attached drawings 1 and 4, a guide pipe 9 is arranged in the secondary desulfurization and dust removal reaction kettle 7, one end of the guide pipe 9 is connected with an inlet of a catcher 6, and the other end of the guide pipe 9 is inserted below the liquid level of a desulfurizer in a sewage tank 8;
referring to the attached drawing 1, the upper end of the outer wall of the second-stage desulfurization and dust removal reaction kettle 7 is sequentially connected with a desulfurization filter screen 10 and a flue gas and water gas separator 11, a flue gas outlet at the lower end of the flue gas and water gas separator 11 is connected with a fine dust removal device 13 through a pipeline provided with a draught fan 12, and an air outlet of the fine dust removal device 13 is connected with a chimney 14.
Referring to the attached figure 2, the catcher 6 is a variable diameter catcher which is formed by connecting a middle cylindrical section 6-1 and conical sections 6-2 at two ends, and the connecting sections of the variable diameter catcher, a first-stage desulfurization and dust removal reaction kettle and a second-stage desulfurization and dust removal reaction kettle are conical sections.
The first-stage desulfurization and dust removal reaction kettle 5 and the second-stage desulfurization and dust removal reaction kettle 7 are wet desulfurization devices, and the desulfurizing agent is desulfurized by a calcium method, a magnesium method, a sodium method and an ammonia method.
An inner shell 5-1 of the primary desulfurization and dust removal reaction kettle 5 is hermetically connected with the top of the kettle body, the inner shell 5-1 is coaxial with the vertical section of the flue 2, and the inner diameter of the inner shell 5-1 is larger than the outer diameter of the vertical section of the flue 2.
The inner walls of the parts, inserted into the liquid level, of the inner shell 5-1 of the first-stage desulfurization and dust removal reaction kettle 5 and the guide pipe 9 of the second-stage desulfurization and dust removal reaction kettle 7 are respectively provided with an air homogenizing plate 15, and the air homogenizing plate 15 is in a conical cylinder shape.
Referring to the attached figure 1, the sewage tank 8 comprises a clean water tank 8-1 and a plurality of adjacent sedimentation tanks 8-2, the plurality of sedimentation tanks 8-2 are positioned at one side of the clean water tank 8-1, the bottom of the clean water tank 8-1 is communicated with the bottom of the adjacent sedimentation tank 8-2, the bottoms or the tops of the adjacent sedimentation tanks 8-2 are communicated, and a desulfurizer liquid adding device 16 communicated with the clean water tank 8-1 is further arranged at one side of the clean water tank 8-1.
The sedimentation tank at the farthest end of the sewage tank 8-1 from the clean water tank is connected with the first-stage desulfurization and dust removal reaction kettle 5 and the second-stage desulfurization and dust removal reaction kettle 7, and when the sedimentation tank works, the liquid level of a desulfurizing agent in the sedimentation tank is higher than the lower end of an inner shell 5-1 in the first-stage desulfurization and dust removal reaction kettle 5 and the lower end of a guide pipe 9 of the second-stage desulfurization and dust removal reaction kettle 7.
A circulating pump 17 is arranged in the clean water tank 8-1, and the liquid outlet of the circulating pump 17 is respectively connected with a desulfurizer inlet above the outer walls of the first-stage desulfurization and dust removal reaction kettle 5 and the second-stage desulfurization and dust removal reaction kettle 7 through a desulfurizer conveying pipeline 18.
The utility model discloses it descends to the effluent water sump perpendicularly to take off flue gas from one-level desulfurization dust removal reation kettle, the particulate matter strikes in the effluent water sump, carry out the desulfurization of once removing dust, the flue gas then goes up to turn over in the annular cavity of one-level desulfurization dust removal reation kettle, get into the reducing trapper, the flue gas velocity descends, the desulfurization of secondary dust removal, then the flue gas gets into second grade desulfurization dust removal reation kettle again, well vertical descent to the effluent water sump, carry out the cubic desulfurization dust removal, the flue gas is through the third desulfurization dust removal, then through desulfurization filter screen fourth desulfurization dust removal seizure, accomplish the desulfurization dust removal comprehensively, the desulfurization effect is showing, desulfurization efficiency can reach more than 98.5%; the dust content can be reduced to 8mg/m by dedusting3The sulfur dioxide emission is below 15mg/m3The system is stable and reliable, and the cost is low.
According to the flue gas operation path, the actual detection and calculation data are as follows:
first-stage desulfurization dust removal reation kettle:
200000m3flue gas 1.338kg/m3＝267600kg/3600s＝74.33kg
Height 10m, gravity acceleration 9.8kg, smoke mass 74.33 10 9.8 7284kg
The drag force of the induced draft fan is 600 Pa or 600 kg; the capture rate was (7284-600)/7284-92%
A catcher:
the dragging force of the induced draft fan is reduced to 600 × 0.92 to 552kg by reducing the smoke speed to 1/5, and the capture of 600 × 552 to 48kg × 0.8 to 38.4kg is completed.
A second-stage desulfurization and dust removal reaction kettle:
the mass of the smoke dust is 9.6kg
Height 10m, gravity acceleration 9.8kg, smoke mass 9.6 x 10 x 9.8 x 940.8kg
The drag force of the induced draft fan is 600 Pa or 600 kg;
the capture rate is (940.8-600)/940.8 is 36.33%; 36.22 × 9.6 ═ 3.45kg
And (4) desulfurizing the filter screen:
the rest 9.6-3.45 is 6.15kg, and 6.05kg is captured by a desulfurization filter screen;
(6.05/6.15)% (98.96%), particulate matter was reduced to 8mg/m3The sulfur dioxide emission is 15mg/m3The following.
The foregoing has described in detail preferred embodiments of the present invention. It should be understood that numerous modifications and variations can be devised by those skilled in the art in light of the teachings of the present invention without undue experimentation.
Therefore, the technical solutions that can be obtained by a person skilled in the art through logic analysis, reasoning or limited experiments based on the prior art according to the concepts of the present invention should be within the scope of protection defined by the claims.
Claims (8)
1. A desulfurization and dust removal system for an aluminum kiln comprises an aluminum kiln body, wherein the upper part and the lower part of the outer wall of the aluminum kiln body are respectively provided with a flue and a fresh air pipeline, and the upper end of the fresh air pipeline is connected with a blower;
the first-stage desulfurization and dust removal reaction kettle body comprises an outer shell and an inner shell, an annular cavity is formed between the inner shell and the outer shell, the lower end of the inner shell is inserted below the liquid level of a desulfurizing agent in the sewage pool when the inner shell works, and flue gas enters the desulfurizing agent in the sewage pool along the inner shell and then escapes into the annular cavity;
a guide pipe is arranged in the secondary desulfurization and dust removal reaction kettle, one end of the guide pipe is connected with an inlet of the catcher, and the other end of the guide pipe is inserted below the liquid level of a desulfurizer in the sewage pool;
the upper end of the outer wall of the second-stage desulfurization and dust removal reaction kettle is sequentially connected with a desulfurization filter screen, flue gas and a water-gas separator, the flue gas and the lower end smoke outlet of the water-gas separator are connected with a fine dust removal device through a pipeline provided with a draught fan, and the air outlet of the fine dust removal device is connected with a chimney.
2. The system for desulfurizing and dedusting in an aluminum kiln as recited in claim 1, wherein the catcher is a variable diameter catcher having a middle cylindrical section and two tapered sections connected together, and the sections connecting the variable diameter catcher to the first-stage desulfurizing and dedusting reactor and the second-stage desulfurizing and dedusting reactor are tapered sections.
3. The system for desulfurization and dust removal in an aluminum kiln as recited in claim 1, wherein the first desulfurization dust removal reaction kettle and the second desulfurization dust removal reaction kettle are both wet desulfurization devices, and the desulfurizing agent is calcium desulfurization, magnesium desulfurization, sodium desulfurization or ammonia desulfurization.
4. The system for desulfurizing and dedusting in an aluminum kiln as recited in claim 1, wherein the inner shell of the primary desulfurization and dedusting reactor is hermetically connected with the top of the reactor body, the inner shell is coaxial with the vertical section of the flue, and the inner diameter of the inner shell is larger than the outer diameter of the vertical section of the flue.
5. The system for desulfurizing and dedusting an aluminum kiln as recited in claim 1, wherein the inner walls of the parts of the inner shell of the first-stage desulfurization and dedusting reaction kettle and the guide pipe of the second-stage desulfurization and dedusting reaction kettle, which are inserted into the liquid level, are both provided with gas homogenizing plates, and the gas homogenizing plates are in a cone cylinder shape.
6. The system for desulfurizing and dedusting in an aluminum kiln as recited in claim 1, wherein the wastewater tank comprises a clean water tank and a plurality of adjacent settling tanks, the plurality of settling tanks are located at one side of the clean water tank, the bottom of the clean water tank is communicated with the bottom of the adjacent settling tank, the bottoms or tops of the adjacent settling tanks are communicated, and a desulfurizing agent feeding device communicated with the clean water tank is further arranged at one side of the clean water tank.
7. The system for desulfurizing and dedusting in an aluminum kiln as recited in claim 6, wherein the sedimentation tank, which is located at the farthest position of the wastewater tank from the clean water tank, is connected to the first-stage desulfurization and dedusting reaction vessel and the second-stage desulfurization and dedusting reaction vessel, and when in operation, the liquid level of the desulfurizing agent in the sedimentation tank is higher than the lower end of the inner shell in the first-stage desulfurization and dedusting reaction vessel and the lower end of the guide pipe of the second-stage desulfurization and dedusting reaction vessel.
8. The system for desulfurizing and dedusting in an aluminum kiln as recited in claim 6, wherein a circulating pump is installed in the clean water tank, and the liquid outlet of the circulating pump is connected with the desulfurizing agent inlet above the outer walls of the first-stage desulfurizing and dedusting reaction kettle and the second-stage desulfurizing and dedusting reaction kettle respectively through desulfurizing agent conveying pipelines.
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| CN201921082383.6U CN210332254U (en) | 2019-07-11 | 2019-07-11 | Desulfurization and dust removal system for aluminum kiln |
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| CN201921082383.6U CN210332254U (en) | 2019-07-11 | 2019-07-11 | Desulfurization and dust removal system for aluminum kiln |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110252120A (en) * | 2019-07-11 | 2019-09-20 | 启明星宇节能科技股份有限公司 | A kind of aluminium stone kiln desulfurization and dust pelletizing system |
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2019
- 2019-07-11 CN CN201921082383.6U patent/CN210332254U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110252120A (en) * | 2019-07-11 | 2019-09-20 | 启明星宇节能科技股份有限公司 | A kind of aluminium stone kiln desulfurization and dust pelletizing system |
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