CN103388045A - Pneumatic transmission system for dry dedusting of thick ash in converter gas - Google Patents
Pneumatic transmission system for dry dedusting of thick ash in converter gas Download PDFInfo
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- CN103388045A CN103388045A CN2013102645410A CN201310264541A CN103388045A CN 103388045 A CN103388045 A CN 103388045A CN 2013102645410 A CN2013102645410 A CN 2013102645410A CN 201310264541 A CN201310264541 A CN 201310264541A CN 103388045 A CN103388045 A CN 103388045A
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
Abstract
The invention relates to a pneumatic transmission system for dry dedusting of thick ash in converter gas, which comprises an efficient waste heat recovery exchanger (1), a horizontal chain-type conveyor (2), a main ash discharge pipe (3), a pneumatic tee distributor (5), a first ash discharge branch pipe (8), a second ash discharge branch pipe (13), a first fluidizing transporter (11), a second fluidizing transporter (16), a pneumatic carrier (24) and a course fluidizing transporter (25), wherein the first fluidizing transporter (11), the second fluidizing transporter (16) and the course fluidizing transporter (25) are connected through the pneumatic carrier (24). The pneumatic transmission system for dry dedusting of thick ash in converter gas adopts the efficient waste heat recovery exchanger and a method of indirect heat exchange, has no direct spraying, completely solves the problem of easy hardening in an evaporative cooler and also solves the problem of ash blocking in the built-in chain-type conveyor resulting from water drops. The use of the efficient waste heat recovery exchanger can recycle a lot of waste heat in raw gas, remove the dust, save energy and can protect environment.
Description
Technical field
The present invention relates to the environmental protection equipment field, more particularly, relate to a kind of dry dedusting of converter cinder air-transport system.
Background technology
Along with the continuous reinforcement of environmental consciousness, dry method dust is adopted in converter newly-built and reconstruction mostly.The existing cinder conveying technology of dry method dust is: water spray dust in evaporative cooler, the cinder of collecting is delivered to cinder storehouse in the converter power house by built-in chain conveyor, pneumatic gate valve and pneumatic double-layer flap valve under action of gravity, after humidification by automobile outward transport comprehensive utilization.
The problem that the existing cinder conveying technology of dry method dust mainly exists: the one, evaporative cooler easily hardens, and water spray is controlled when bad and is had water droplet and separate out, and causes built-in chain conveyor card ash, and then affects converter and normally produce; The 2nd, the storage ash of cinder and fortune ash are subjected to the restriction of place and distance; The 3rd, the cinder humidification is inhomogeneous, airborne dust everywhere while causing unloading ash, contaminate environment.
Summary of the invention
The technical problem to be solved in the present invention is,, for the above-mentioned defect of prior art, provides a kind of dry dedusting of converter cinder air-transport system.
The technical solution adopted for the present invention to solve the technical problems is: construct a kind of dry dedusting of converter cinder air-transport system, comprise that efficient waste heat reclaims interchanger, horizontal chain transfer roller, unloads the ash supervisor, Pneumatic three-way tripper, first unloads grey arm, second and unloads grey arm, the first storehouse pump, the second storehouse pump, pneumatic carrier and cinder storehouse;
Described efficient waste heat reclaims the interchanger side and is provided with efficient heat-exchanging pipe, and described horizontal chain transfer roller is horizontally set on described efficient waste heat and reclaims the interchanger below;
Described the first storehouse pump and the second storehouse pump are arranged on the below of described horizontal chain transfer roller, the cinder-discharging port of described horizontal chain transfer roller be connected the style three-way distributor entrance and unload ash supervisor and connect by described, describedly unload the ash supervisor and be provided with pneumatic gate valve;
Described the first storehouse pump unloads grey arm by described first and is connected with described Pneumatic three-way tripper, and described first unloads grey arm is provided with the second hand operated gate valve and the first Pneumatic double gate valve, and described the first storehouse pump is provided with the first vacuum pressure relief valve;
Described the second storehouse pump unloads grey arm by described second and is connected with described Pneumatic three-way tripper, and described second unloads grey arm is provided with the 3rd hand operated gate valve and the second Pneumatic double gate valve, and described the second storehouse pump is provided with the second vacuum pressure relief valve;
Described pneumatic carrier is connected with gas-holder, and the entrance of described gas-holder is connected with the first nitrogen tube, and the entrance of described the first nitrogen tube is connected with nitrogen header pipe; Described the first storehouse pump, the second storehouse pump are connected by pneumatic carrier with the cinder storehouse;
Described the first pump bottom, storehouse is provided with the first class device, is provided with the first pneumatic ball valve between described the first storehouse pump and described gas-holder, is provided with the 3rd Pneumatic double gate valve between described the first storehouse pump and described pneumatic carrier;
Described the second pump bottom, storehouse is provided with the second gasifying device, is provided with the second pneumatic ball valve between described the second storehouse pump and described gas-holder, is provided with the 4th Pneumatic double gate valve between described the second storehouse pump and described pneumatic carrier;
The nitrogen tube of described gas-holder outlet is divided into two-way, and a road is connected with described first class device and pneumatic carrier, and another road is connected with described second gasifying device and pneumatic carrier;
Top, described cinder storehouse is provided with top, storehouse sack cleaner and the 3rd vacuum pressure relief valve, be provided with the 3rd fluidizer in the cone bucket under described cinder storehouse, the cinder-discharging port of the lower cone bucket of bottom, described cinder storehouse is connected with the 4th Manual flashboard valve inlet, and described the 4th Manual flashboard valve outlet port is connected with the star-shaped dust-discharging valve entrance;
Described nitrogen header pipe also is connected with the second nitrogen tube entrance, and described the second nitrogen tube outlet is divided into two-way, and a road is connected with the 3rd fluidizer, and another Lu Yucang top sack cleaner connects;
Establish relief valve and magnetic valve between the second nitrogen tube and the 3rd fluidizer.
In dry dedusting of converter cinder air-transport system of the present invention, described horizontal chain transfer roller is provided with the first accident and unloads the ash supervisor, and described the first accident is unloaded the ash supervisor and is provided with the first hand operated gate valve.
In dry dedusting of converter cinder air-transport system of the present invention, under described cinder storehouse, the cone bucket is provided with the second accident and unloads the ash supervisor, and described the second accident is unloaded the ash supervisor and is provided with the 5th hand operated gate valve.
In dry dedusting of converter cinder air-transport system of the present invention, described the first storehouse pump and the second pump bottom, storehouse are provided with water shoot.
Implement dry dedusting of converter cinder air-transport system of the present invention, have following beneficial effect:
1, efficient waste heat reclaims interchanger and adopts the mode of indirect heat exchange,, without water spray directly, thoroughly solved the problem that evaporative cooler easily hardens, and has also solved the problem of the built-in chain conveyor card ash that water droplet causes.
2, after using efficient waste heat to reclaim interchanger, can reclaim in a large number the waste heat in raw gas, again can dedusting, energy-conservation environmental protection again.
But 3, the first storehouse pump and the second storehouse pump alternation, guarantee the stability of delivery system, improved the transport capacity of cinder.
4, the cinder storehouse both can be placed in the converter power house, also can be placed on outside the converter power house, and storage ash and fortune ash are not subjected to the restriction of place and distance.
5, the present invention has cancelled dust-moisturized machine, can adopt the mode of vacuum suction and discharge tank car to unload ash, non-flour dust overflow, more environmental protection.
Description of drawings
The invention will be further described below in conjunction with drawings and Examples, in accompanying drawing:
Fig. 1 is the structural representation of dry dedusting of converter cinder air-transport system of the present invention.
Embodiment
Understand for technical characterictic of the present invention, purpose and effect being had more clearly, now contrast accompanying drawing and describe the specific embodiment of the present invention in detail.
As shown in Figure 1, dry dedusting of converter cinder air-transport system of the present invention comprises that efficient waste heat reclaims interchanger 1, horizontal chain transfer roller 2, unloads ash supervisor 3 and pneumatic style three-way distributor 5, first and unload grey arm 8, second and unload grey arm 13, the first storehouse pump 11, the second storehouse pump 16, pneumatic carrier 24, cinder storehouse 25.
Efficient waste heat reclaims interchanger 1 side and is provided with efficient heat-exchanging pipe, and horizontal chain transfer roller 2 is horizontally set on described efficient waste heat and reclaims interchanger 1 below.The first storehouse pump 11 and the second storehouse pump 16 are arranged on the below of horizontal chain transfer roller 2, cinder-discharging port be connected style three-way distributor 5 entrances and connect by unloading ash supervisor 3, unload ash supervisor 3 and be provided with pneumatic gate valve 4.
The first storehouse pump 11 unloads grey arm 8 by first and is connected with Pneumatic three-way tripper 5, and first unloads grey arm 8 is provided with the second hand operated gate valve 9 and the first Pneumatic double gate valve 10.When the second hand operated gate valve 9 and the first Pneumatic double gate valve 10 were opened, the cinder in Pneumatic three-way tripper 5 unloaded grey arm 8 by first and enters in the first storehouse pump 11.The first storehouse pump 11 is provided with the first vacuum pressure relief valve 12, can prevent that the first storehouse pump 11 internal pressures are excessive.
The second storehouse pump 16 unloads grey arm 13 by second and is connected with Pneumatic three-way tripper 5, and second unloads grey arm 13 is provided with the 3rd hand operated gate valve 14 and the second Pneumatic double gate valve 15.When the 3rd hand operated gate valve 14 and the second Pneumatic double gate valve 15 were opened, the cinder in Pneumatic three-way tripper 5 unloaded grey arm 13 by second and enters in the second storehouse pump 16.The second storehouse pump 16 is provided with the second vacuum pressure relief valve 17, can prevent that the second storehouse pump 16 internal pressures are excessive.
25 tops, cinder storehouse are provided with top, storehouse sack cleaner 26 and the 3rd vacuum pressure relief valve 27.Top, storehouse sack cleaner 26 is used for collecting the dust at 25 tops, cinder storehouse.The 3rd vacuum pressure relief valve 27 is used for preventing that cinder storehouse 25 internal pressures are excessive.Be provided with the 3rd fluidizer 35 in the cone bucket of 25 times, cinder storehouse, the cinder-discharging port of the 25 times cone buckets in cinder storehouse is connected with the 4th hand operated gate valve 28 entrances, and the 4th hand operated gate valve 28 outlets are connected with star-shaped dust-discharging valve 29 entrances.
Nitrogen header pipe also is connected with the second nitrogen tube 32 entrances, and the second nitrogen tube 32 outlets are divided into two-way, and a road is connected with the 3rd fluidizer 35, and another Lu Yucang top sack cleaner 26 connects.
It is as follows that in the present invention, dry dedusting of converter cinder air-transport system is carried the technical process of cinder:
Efficient waste heat reclaims interchanger 1 → horizontal chain transfer roller 2 → cinder-discharging port → unload ash supervisor 3 → pneumatic gate valve 4 → Pneumatic three-way tripper 5 → the first and unloads grey arm 8/ second and unload grey arm 13 → the first storehouse pump 11/ second storehouse pumps 16 → the 3rd Pneumatic double gate valve 21/ the 4th Pneumatic double gate valve 23 → pneumatic carrier 24 → cinder storehouse 25 → the 4th hand operated gate valve 28 → star-shaped dust-discharging valves 29.
When the dust-laden raw gas reclaimed interchanger 1 by efficient waste heat, the crude particle dust of 25%～35% (being generally 30%) was captured under the effect of gravity and centrifugal force, fell into horizontal chain transfer roller (2); The crude particle dust temperature is 200～300 ℃ (being generally 250 ℃); Crude particle dust tap density 1.8～2.6t/m
3The crude particle dust water ratio is 0.
Horizontal chain transfer roller 2 and converter process are chain, in the operation of smelting period.Cinder through horizontal chain transfer roller 2 cinder-discharging ports, unload ash supervisor 3, pneumatic gate valve 4, Pneumatic three-way tripper 5, first and unload grey arm 8, the second hand operated gate valve 9 and the first Pneumatic double gate valve 10 and enter the first storehouse pump 11, after the first storehouse pump 11 material are full, deliver to cinder storehouse 25 by pneumatic carrier 24 after first class device fluidisation.Also level gage can be set in the first storehouse pump 11, by level gage, detect the first interior cinder amount of storehouse pump 11.After the first storehouse pump 11 material were full, Pneumatic three-way tripper 5 switched to second and unloads grey arm 13, and cinder enters the second storehouse pump 16 through the 3rd hand operated gate valve 14 and the second Pneumatic double gate valve 15.But the first storehouse pump 11 and the second storehouse pump 16 alternations, and standby each other, and when one of them damaged, whole system still can be worked normally, has guaranteed the stability of delivery system, has improved the transport capacity of cinder.
While opening magnetic valve 34, the 3rd fluidizer 35 spray low-pressure nitrogens, can reduce the temperature of cinder storehouse 25 interior cinders, also can the fluidisation cinder, be convenient to unload ash.The cinder that top, storehouse sack cleaner 26 is collected is delivered to 25 bottoms, cinder storehouse by the second nitrogen tube 32, guarantees the cinder discharging fully fast in cinder storehouse 25, reduces residual.Can regulate the intake of nitrogen by relief valve 33.Unload the mode of ash employing vacuum suction and discharge tank car, non-flour dust overflow while unloading ash, more environmental protection.
Further, horizontal chain transfer roller 2 is provided with the first accident and unloads ash supervisor's 6, the first accidents and unload ash supervisor 6 and be provided with the first hand operated gate valve 7.During maintenance, cinder unloads ash supervisor 6 from the first accident and discharges.
Further, the first storehouse pump 11 and and the second storehouse pump 16 bottoms also water shoot can be set, be used for to discharge the ponding in the pump of storehouse.
Further, cone bucket in cinder storehouse 25 times is provided with the second accident and unloads ash supervisor 30, the second accidents and unload ash supervisor 30 and be provided with the 5th hand operated gate valve 31.When overhauled in cinder storehouse 25, cinder 25 times through the cinder storehouse cone bucket accident cinder-discharging ports, the second accidents were unloaded ash supervisor the 30 and the 5th hand operated gate valve 31 and are discharged.
Further, the first storehouse pump 11 and the second storehouse pump 16 materials are 16MnR or Q235B or spheroidal graphite cast iron or stainless steel.The first storehouse pump 11 and second storehouse pump 16 capacity: 1.0～10m
3The first storehouse pump 11 and the second storehouse pump 16 quantity 〉=1, can a plurality ofly be used in combination.Pneumatic carrier 24 adopts and contains the manganese weldless steel tube, elbow, threeway wear-resistant ceramic of lining material, and pipe bending radius 〉=10 times pipe diameter, pipeline has choke preventing function.
The first storehouse pump 11 or the second storehouse pump 16 adopt and are interrupted the mode of carrying, and cinder of every conveying, be a working cycle, and each circulation is divided into the step, take the first storehouse pump 11, carry as example:
1, charging: the second hand operated gate valve 9 is often opened, the first Pneumatic double gate valve 10 is opened condition, the first pneumatic ball valve 20 and the 3rd Pneumatic double gate valve 21 are closed, cinder enters the first storehouse pump 11 under action of gravity, when level gage that the first storehouse pump 11 carries detect material full after, send signal and, by the PLC time variable control, automatically close the first Pneumatic double gate valve 10, fill process finishes.
2, fluidisation: the first pneumatic ball valve 20 is opened, nitrogen enters the first interior first class device of storehouse pump 11 from gas-holder 19, the abundant fluidisation of cinder in the first storehouse pump 11, pressure constantly raises, when pressure rises to the setting operating pressure,, by the PLC time variable control, automatically open the 3rd Pneumatic double gate valve 21 at the first storehouse pump 11 sidepiece discharge port places, fluid mapper process finishes, and enters course of conveying.
3, carry: after the 3rd Pneumatic double gate valve 21 was opened, the uniform gas ash of fluidisation mixture was delivered to cinder storehouse 25 by pneumatic carrier 24, and this moment first, the interior pressure of storehouse pump 11 kept stable; After the ash of the gas in the first storehouse pump 11 mixture has been carried, the resistance of pneumatic carrier 24 descends, the pressure of pneumatic carrier 24 starts to reduce, when being reduced to the threshold pression of setting, course of conveying finishes, enter purge, this moment, the first pneumatic ball valve 20 and the 3rd Pneumatic double gate valve 21 still remained on opened condition.
4, purge: nitrogen continues to purge the first storehouse pump 11 and pneumatic carrier 24, this moment, the first storehouse pump 11 was interior without flying dust, gas ash mixture in pneumatic carrier 24 reduces gradually, all almost nitrogen finally, systemic resistance continues to descend and after a period of stabilisation, purge finishes, and closes the first pneumatic ball valve 20 and the 3rd Pneumatic double gate valve 21, then open the first Pneumatic double gate valve 10, the first storehouse pumps 11 and recover feed state.So far, comprise that a delivery cycle in 4 steps finishes, restart next circulation.
Converter in dry dedusting of converter cinder air-transport system of the present invention is defined as: decarburization converter or dephosphorization converter or lava homogenizing furnace or stainless steel.Air-transport system of the present invention is applicable to the conveying of 80t～300t converter one time dry fume dedusting cinder.Its fed distance is 300m approximately, and climb altitude is 30m approximately.Its delivery medium adopts low-pressure nitrogen, nitrogen pressure 〉=0.6MPa.
The above is described embodiments of the invention by reference to the accompanying drawings; but the present invention is not limited to above-mentioned embodiment; above-mentioned embodiment is only schematic; rather than restrictive; those of ordinary skill in the art is under enlightenment of the present invention;, not breaking away from the scope situation that aim of the present invention and claim protect, also can make a lot of forms, within these all belong to protection of the present invention.
Claims (4)
1. dry dedusting of converter cinder air-transport system, it is characterized in that, comprise that efficient waste heat reclaims interchanger (1), horizontal chain transfer roller (2), unloads ash supervisor (3), Pneumatic three-way tripper (5), first unloads grey arm (8), second and unload grey arm (13), the first storehouse pump (11), the second storehouse pump (16), pneumatic carrier (24) and cinder storehouse (25);
Described efficient waste heat reclaims interchanger (1) side and is provided with efficient heat-exchanging pipe, and described horizontal chain transfer roller (2) is horizontally set on described efficient waste heat and reclaims interchanger (1) below;
Described the first storehouse pump (11) and the second storehouse pump (16) are arranged on the below of described horizontal chain transfer roller (2), the cinder-discharging port of described horizontal chain transfer roller (2) be connected style three-way distributor (5) entrance and unload ash supervisor (3) and connect by described, describedly unload ash supervisor (3) and be provided with pneumatic gate valve (4);
Described the first storehouse pump (11) unloads grey arm (8) by described first and is connected with described Pneumatic three-way tripper (5), described first unloads grey arm (8) is provided with the second hand operated gate valve (9) and the first Pneumatic double gate valve (10), and described the first storehouse pump (11) is provided with the first vacuum pressure relief valve (12);
Described the second storehouse pump (16) unloads grey arm (13) by described second and is connected with described Pneumatic three-way tripper (5), described second unloads grey arm (13) is provided with the 3rd hand operated gate valve (14) and the second Pneumatic double gate valve (15), and described the second storehouse pump (16) is provided with the second vacuum pressure relief valve (17);
Described pneumatic carrier (24) is connected with gas-holder (19), and the entrance of described gas-holder (19) is connected with the first nitrogen tube (18), and the entrance of described the first nitrogen tube (18) is connected with nitrogen header pipe; Described the first storehouse pump (11), the second storehouse pump (16) are connected by pneumatic carrier (24) with cinder storehouse (25);
Described the first storehouse pump (11) bottom is provided with the first class device, be provided with the first pneumatic ball valve (20) between described the first storehouse pump (11) and described gas-holder (19), be provided with the 3rd Pneumatic double gate valve (21) between described the first storehouse pump (11) and described pneumatic carrier (24);
Described the second storehouse pump (16) bottom is provided with the second gasifying device, be provided with the second pneumatic ball valve (22) between described the second storehouse pump (16) and described gas-holder (19), be provided with the 4th Pneumatic double gate valve (23) between described the second storehouse pump (16) and described pneumatic carrier (24);
The nitrogen tube of described gas-holder (19) outlet is divided into two-way, and a road is connected with described first class device and pneumatic carrier (24), and another road is connected with described second gasifying device and pneumatic carrier (24);
Top, described cinder storehouse (25) is provided with top, storehouse sack cleaner (26) and the 3rd vacuum pressure relief valve (27), be provided with the 3rd fluidizer (35) in the lower cone bucket in described cinder storehouse (25), the cinder-discharging port of the lower cone bucket of bottom, described cinder storehouse (25) is connected with the 4th hand operated gate valve (28) entrance, and described the 4th hand operated gate valve (28) outlet is connected with star-shaped dust-discharging valve (29) entrance;
Described nitrogen header pipe also is connected with the second nitrogen tube (32) entrance, and described the second nitrogen tube (32) outlet is divided into two-way, and a road is connected with the 3rd fluidizer (35), and another Lu Yucang top sack cleaner (26) connects;
Establish relief valve (33) and magnetic valve (34) between the second nitrogen tube (32) and the 3rd fluidizer (35).
2. dry dedusting of converter cinder air-transport system according to claim 1, it is characterized in that, described horizontal chain transfer roller (2) is provided with the first accident and unloads ash supervisor (6), and described the first accident is unloaded ash supervisor (6) and is provided with the first hand operated gate valve (7).
3. dry dedusting of converter cinder air-transport system according to claim 1, it is characterized in that, the lower cone bucket in described cinder storehouse (25) is provided with the second accident and unloads ash supervisor (30), and described the second accident is unloaded ash supervisor (30) and is provided with the 5th hand operated gate valve (31).
4. dry dedusting of converter cinder air-transport system according to claim 1, is characterized in that, described the first storehouse pump (11) and the second storehouse pump (16) bottom are provided with water shoot.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310264541.0A CN103388045B (en) | 2013-06-28 | 2013-06-28 | Pneumatic transmission system for dry dedusting of thick ash in converter gas |
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| CN201310264541.0A CN103388045B (en) | 2013-06-28 | 2013-06-28 | Pneumatic transmission system for dry dedusting of thick ash in converter gas |
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| CN103388045A true CN103388045A (en) | 2013-11-13 |
| CN103388045B CN103388045B (en) | 2015-04-01 |
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| CN104911300A (en) * | 2015-06-30 | 2015-09-16 | 中冶南方工程技术有限公司 | System for carrying out pneumatic transport on coarse dust generated during primary dedusting of vanadium recovering converter |
| CN104928434A (en) * | 2015-06-30 | 2015-09-23 | 中冶南方工程技术有限公司 | Vanadium extracting converter primary dedusting coarse ash pneumatic conveying method |
| CN112029951A (en) * | 2020-08-12 | 2020-12-04 | 北京首钢自动化信息技术有限公司 | Coarse ash conveying control method and device |
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| CN101451173A (en) * | 2007-11-28 | 2009-06-10 | 中冶赛迪工程技术股份有限公司 | Converter gas dry method pocket type purification and recovery process and system |
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| CN112029951A (en) * | 2020-08-12 | 2020-12-04 | 北京首钢自动化信息技术有限公司 | Coarse ash conveying control method and device |
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| Publication number | Publication date |
|---|---|
| CN103388045B (en) | 2015-04-01 |
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