CN103333983B - Converter primary flue gas dry dedusting and cinder pneumatic transmission system - Google Patents
Converter primary flue gas dry dedusting and cinder pneumatic transmission system Download PDFInfo
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- CN103333983B CN103333983B CN201310263853.XA CN201310263853A CN103333983B CN 103333983 B CN103333983 B CN 103333983B CN 201310263853 A CN201310263853 A CN 201310263853A CN 103333983 B CN103333983 B CN 103333983B
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Abstract
The invention relates to a converter primary flue gas dry dedusting and cinder pneumatic transmission system. The system comprises an evaporative cooling tower (1), a cinder discharge pipe (4), a bin pump (10), a pneumatic transmission pipe (17) and a cinder bin (18) which are sequentially connected, wherein a rapping device (2) and a charge level indicator (3) are arranged in the evaporative cooling tower (1); the pneumatic transmission pipe (17) is connected with a gas storage tank (14); the inlet of the gas storage tank (14) is connected with a first nitrogen gas pipe (13); the inlet of the first nitrogen gas pipe (13) is connected with a nitrogen gas main pipe; and the bin pump (10) is connected with the cinder bin (18) through the pneumatic transmission pipe (17). According to the invention, cinders can be transported by a common cinder transport truck, thereby greatly reducing the investment and saving the cost. Meanwhile, the invention reduces the equipment quantity and equipment maintenance amount, solves the problem that the height of the evaporative cooling tower is limited during dry dedusting reconstruction, is especially suitable for a project of reconstructing converter primary flue gas wet dedusting into dry dedusting, and has wide application prospects.
Description
Technical field
The present invention relates to field of environment protection equipment, more particularly, relate to a kind of converter dry fume dedusting cinder air-transport system.
Background technology
Along with the continuous reinforcement of environmental consciousness, converter flue gas that is newly-built and reconstruction mostly adopts dry method dust.The cinder that below wet cooling tower, banana-bends is collected delivers to the cinder storehouse in converter power house under gravity by built-in chain conveyor, pneumatic gate valve and pneumatic double-layer flap valve, cinder directly transports outward comprehensive utilization by vacuum suction and discharge tank car.
Existing converter main Problems existing of dry fume dedusting cinder delivery system: one is that built-in chain conveyor failure rate is high, often blocks ash, has a strong impact on converter and normally produce; Two is that cinder storehouse is located in converter power house, is often subject to the restriction of process for making arrangement condition, consider to occupy a large amount of interior spaces by the fortune ash passage that automobile passes in and out; Three be each price of vacuum suction and discharge tank car at about 1,000,000 yuan, invest higher.
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 converter a dry fume dedusting cinder air-transport system.
The technical solution adopted for the present invention to solve the technical problems is: construct a kind of converter dry fume dedusting cinder air-transport system, comprise connect successively wet cooling tower, ash-unloading tube, storehouse pump, pneumatic carrier and cinder storehouse;
The lower cone bucket of described transpiration cooling tower bottom, for trapping the cinder in raw gas, is provided with rapping apparatus and level gage in wet cooling tower; Described storehouse pump is arranged on the below of described wet cooling tower, and the cinder-discharging port of the lower cone bucket of described wet cooling tower is connected by described ash-unloading tube with storehouse pump intake, and described ash-unloading tube is provided with pneumatic gate valve and the first Pneumatic double gate valve; Pump top, described storehouse is provided with the first 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 first nitrogen tube is connected with nitrogen header pipe; Described storehouse pump is connected by pneumatic carrier with cinder storehouse, and described pneumatic carrier is provided with the second Pneumatic double gate valve, is provided with first class device bottom the pump of described storehouse;
The nitrogen tube of described reservoir outlet is divided into two-way, and a road is connected with described first class device, and another road is connected with described pneumatic carrier, is provided with pneumatic ball valve between described gas-holder and storehouse pump;
Sack cleaner and the second vacuum pressure relief valve are established in top, described cinder storehouse, second gasifying device is provided with in cone bucket under described cinder storehouse, the cinder-discharging port of the lower cone bucket bottom described cinder storehouse is connected with the second hand operated gate valve entrance, and described second hand operated gate valve outlet is connected with dust humidifying agitator entrance; The outlet of described dust humidifying agitator is connected by ash releasing tube with canvas hose entrance;
Described nitrogen header pipe is also connected with the second nitrogen tube entrance, and described second nitrogen tube outlet is divided into two-way, and a road is connected with second gasifying device, and another Lu Yucang pushes up sack cleaner and connects;
Relief valve and magnetic valve is established between second nitrogen tube and second gasifying device.
In converter of the present invention dry fume dedusting cinder air-transport system, under described wet cooling tower, cone bucket is provided with the first accident ash-unloading tube, and described first accident ash-unloading tube is provided with the first hand operated gate valve.
In converter of the present invention dry fume dedusting cinder air-transport system, between described ash-unloading tube and the first accident ash-unloading tube, be provided with pipe connecting.
In converter of the present invention dry fume dedusting cinder air-transport system, under described cinder storehouse, cone bucket is provided with the second accident ash-unloading tube, and described second accident ash-unloading tube is provided with the 3rd hand operated gate valve.
In converter of the present invention dry fume dedusting cinder air-transport system, described wet cooling tower is provided with manhole.
In converter of the present invention dry fume dedusting cinder air-transport system, bottom the pump of described storehouse, be provided with water shoot.
Implement converter of the present invention dry fume dedusting cinder air-transport system, there is following beneficial effect:
1, number of devices and maintenance of the equipment amount is decreased.Dismountable cover banana-bends and built-in chain conveyor, solve the problem of built-in chain conveyor card ash, decrease equipment failure rate, ensured that converter is normally produced.
2, cinder storehouse both can be placed in converter power house, also can be placed on outside converter power house, and storage ash and fortune ash are not subject to the restriction of place and distance.
3, after the present invention adopts dust humidifying agitator, common bulk cement truck can be adopted to transport ash, greatly reduce investment, cost-saving.
4, the invention solves the problem that when dry method dust is transformed, wet cooling tower is height-limited, be especially applicable to converter flue-gas wet dust removal and change dry method dust project, have a extensive future.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described, in accompanying drawing:
Fig. 1 is the structural representation of a converter of the present invention dry fume dedusting cinder air-transport system.
Embodiment
In order to there be understanding clearly to technical characteristic of the present invention, object and effect, now contrast accompanying drawing and describe the specific embodiment of the present invention in detail.
As shown in Figure 1, converter of the present invention dry fume dedusting cinder air-transport system comprise connect successively wet cooling tower 1, ash-unloading tube 4, storehouse pump 10, pneumatic carrier 17 and cinder storehouse 18.
The lower cone bucket of wet cooling tower 1, for trapping the cinder in raw gas, is provided with level gage 3 and rapping apparatus 2 in wet cooling tower 1.The cinder amount in wet cooling tower 1 can be detected by level gage 3, can ensure that cinder can fall in ash-unloading tube 4 smoothly by rapping apparatus 2, prevent blocking.Storehouse pump 10 is arranged on the below of wet cooling tower 1, and the cinder-discharging port of the lower cone bucket of wet cooling tower 1 is connected by ash-unloading tube 4 with storehouse pump 10 entrance, and ash-unloading tube 4 is provided with pneumatic gate valve 5 and the first Pneumatic double gate valve 6.When pneumatic gate valve 5 and the first Pneumatic double gate valve 6 are opened, the cinder of wet cooling tower 1 inside is fallen in storehouse pump 10 by ash-unloading tube 4.The top of storehouse pump 10 is provided with the first vacuum pressure relief valve 12, prevents storehouse pump 10 internal pressure excessive.
Pneumatic carrier 17 is connected with gas-holder 14, and the entrance of gas-holder 14 is connected with the first nitrogen tube 13, and the entrance of the first nitrogen tube 13 is connected with nitrogen header pipe.Storehouse pump 10 is connected by pneumatic carrier 17 with cinder storehouse 18, and pneumatic carrier 17 is provided with the second Pneumatic double gate valve 16, is provided with first class device bottom storehouse pump 10.
The nitrogen tube that gas-holder 14 exports is divided into two-way, and a road is connected with first class device, and another road is connected with pneumatic carrier 17, is provided with pneumatic ball valve 15 between gas-holder 14 and storehouse pump 10.
Top, cinder storehouse 18 is provided with storehouse top sack cleaner 19 and the second vacuum pressure relief valve 20.Top, storehouse sack cleaner 19 is for collecting the dust at top, cinder storehouse 18.Second vacuum pressure relief valve 20 is for preventing cinder storehouse 18 internal pressure excessive.Second gasifying device 30 is provided with in the cone bucket of 18 times, cinder storehouse, the cinder-discharging port of the 18 times cone buckets in cinder storehouse is connected with the second hand operated gate valve 21 entrance, second hand operated gate valve 21 outlet is connected with dust humidifying agitator 22 entrance, and the outlet of dust humidifying agitator 22 is connected by ash releasing tube 23 with canvas hose 24 entrance.
Nitrogen header pipe is also connected with the second nitrogen tube 27 entrance, and the second nitrogen tube 27 outlet is divided into two-way, and a road is connected with second gasifying device 30, and another Lu Yucang pushes up sack cleaner 19 and connects.Relief valve 28 and magnetic valve 29 is established between second nitrogen tube 27 and second gasifying device 30.
In the present invention, the technical process of a converter dry fume dedusting cinder air-transport system conveying cinder is as follows:
Wet cooling tower 1 time cone bucket cinder-discharging port → pump 10 → the second Pneumatic double gate valve 16 → pneumatic carrier, 17 → cinder storehouse 18 → the second, ash-unloading tube 4 → pneumatic gate valve 5 → the first Pneumatic double gate valve 6 → storehouse hand operated gate valve 21 → dust humidifying agitator 22 → ash releasing tube 23 → canvas hose 24.
When dust-laden raw gas is by wet cooling tower 1 time cone bucket, owing to flowing to the change of generation more than 90 °, under the effect of gravity and centrifugal force, 25% ~ 35% crude particle dust being generally 30% is captured at lower cone bucket place; Crude particle dust temperature is 200 ~ 300 DEG C and is generally 250 DEG C; Crude particle dust tap density 1.8 ~ 2.6t/m
3; Crude particle dust water ratio 3% ~ 5%.
Level gage 3 detects that the cinder in wet cooling tower 1 time cone bucket sends signal when reaching upper limit, and start to unload ash to storehouse pump 10, rapping apparatus 2 is started working simultaneously.Cinder enters storehouse pump 10 through wet cooling tower 1 time cone bucket cinder-discharging port, ash-unloading tube 4, pneumatic gate valve 5 and the first Pneumatic double gate valve 6, after storehouse pump 10 material is full, after first class device fluidisation, delivers to cinder storehouse 18 by pneumatic carrier 17.Also can level gage be set in storehouse pump 10, detects the cinder amount in storehouse pump 10 by level gage.When opening magnetic valve 29, second gasifying device 30 sprays low-pressure nitrogen, can reduce the temperature of cinder in cinder storehouse 18, also can fluidisation cinder, is convenient to unload ash.Top, the storehouse cinder collected of sack cleaner 19 is delivered to bottom cinder storehouse 18 by the second nitrogen tube 27, ensures that cinder in cinder storehouse 18 can discharging fully fast, reduces residual.The intake of nitrogen can be regulated by relief valve 28.Unload ash and adopt common bulk cement truck fortune ash, cinder, after dust humidifying agitator 22 humidification, is joined in bulk cement truck by ash releasing tube 23 and canvas hose 24.
Level gage 3 in wet cooling tower 1 detects that the cinder in wet cooling tower 1 time cone bucket unloads and sends signal to during lower limit, and stop unloading ash to storehouse pump 10, rapping apparatus 2 quits work simultaneously.Ash envelope in wet cooling tower 1 time cone bucket can prevent coal gas excessive, ash envelope height 800 ~ 1000mm.
Further, wet cooling tower 1 time cone bucket is provided with the first accident ash-unloading tube 7, first accident ash-unloading tube 7 and is provided with the first hand operated gate valve 9.When storehouse pump 10 overhauls, cinder is discharged through wet cooling tower 1 time cone bucket accident cinder-discharging port, the first accident ash-unloading tube 7 and the first hand operated gate valve 9.Be provided with pipe connecting 8 between ash-unloading tube 4 and the first accident ash-unloading tube 7, be mainly used to get rid of the accident ponding in wet cooling tower 1 time cone bucket.Bottom storehouse pump 10, also water shoot 11 can be set, for discharging the ponding in storehouse pump 10.
Further, 18 times, cinder storehouse cone bucket is provided with the second accident ash-unloading tube 25, second accident ash-unloading tube 25 and is provided with the 3rd hand operated gate valve 26.When cinder storehouse 18 is overhauled, cinder 18 times through cinder storehouse cone bucket accident cinder-discharging ports, the second accident ash-unloading tube 25 and the 3rd hand operated gate valves 26 are discharged.
Further, wet cooling tower 1 is provided with manhole, easy access.
Further, storehouse pump 10 material is 16MnR or Q235B or spheroidal graphite cast iron or stainless steel.Storehouse pump 10 capacity: 1.0 ~ 10m
3; Storehouse pump 10 quantity>=1, can multiplely combinationally use.Pneumatic carrier 17 adopts containing manganese weldless steel tube, and elbow, threeway wear-resistant ceramic of lining material, pipe bending radius >=10 times pipe diameter, pipeline has choke preventing function.
Storehouse pump 10 adopts the mode of being interrupted conveying, and often carry a cinder, be a working cycle, each circulation is divided into 4 steps:
1, charging: pneumatic gate valve 5 and the first Pneumatic double gate valve 6 are in opened condition, pneumatic ball valve 15 and the second Pneumatic double gate valve 16 are closed, storehouse pump 10 is bored for 1 time to struggle against with wet cooling tower and is communicated with, rapping apparatus 2 works, and cinder enters storehouse pump 10 under gravity, after the level gage 3 carried when storehouse pump 10 detects that material is full, send signal and by PLC time variable control, automatic closedown first Pneumatic double gate valve 6, fill process terminates, and rapping apparatus 2 quits work.
2, fluidisation: pneumatic ball valve 15 is opened, nitrogen enters the first class device in storehouse pump 10 from gas-holder 14, the abundant fluidisation of cinder in storehouse pump 10, pressure constantly raises, when pressure rises to setting operating pressure, by PLC time variable control, automatically open the second Pneumatic double gate valve 16 of storehouse pump 10 sidepiece discharge outlet, fluid mapper process terminates, and enters course of conveying.
3, carry: after the second Pneumatic double gate valve 16 is opened, fluidisation uniform gas ash mixture delivers to cinder storehouse 18 by pneumatic carrier 17, the pressure remained steady now in storehouse pump 10.After the gas ash mixture in storehouse pump 10 has been carried, the resistance of pneumatic carrier 17 declines, the pressure of pneumatic carrier 17 starts to reduce, when being reduced to the threshold pression of setting, then course of conveying terminates, enter purge, now pneumatic ball valve 15 and the second Pneumatic double gate valve 16 still remain on opened condition.
4, purge: nitrogen continues purge bin pump 10 and pneumatic carrier 17, now storehouse pump 10 is interior without flying dust, gas ash mixture in pneumatic carrier 17 reduces gradually, last is all almost nitrogen, systemic resistance continues to decline and after a period of stabilisation, purge terminates, and closes pneumatic ball valve 15 and the second Pneumatic double gate valve 16, then open the first Pneumatic double gate valve 6, storehouse pump 10 recovers feed state.So far, the delivery cycle comprising step terminates, and restarts next circulation.
Converter in converter of the present invention dry fume dedusting cinder air-transport system 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 dry fume dedusting cinder.Its fed distance is about 300m, and climb altitude is about 30m.Its delivery medium adopts low-pressure nitrogen, nitrogen pressure >=0.6MPa.
By reference to the accompanying drawings embodiments of the invention are described above; but the present invention is not limited to above-mentioned embodiment; above-mentioned embodiment is only schematic; instead of it is restrictive; those of ordinary skill in the art is under enlightenment of the present invention; do not departing under the ambit that present inventive concept and claim protect, also can make a lot of form, these all belong within protection of the present invention.
Claims (6)
1. converter dry fume dedusting cinder air-transport system, is characterized in that, comprise connect successively wet cooling tower (1), ash-unloading tube (4), storehouse pump (10), pneumatic carrier (17) and cinder storehouse (18);
The lower cone bucket of described wet cooling tower (1) bottom, for trapping the cinder in raw gas, is provided with rapping apparatus (2) and level gage (3) in wet cooling tower (1); Described storehouse pump (10) is arranged on the below of described wet cooling tower (1), the cinder-discharging port of the lower cone bucket of described wet cooling tower (1) is connected by described ash-unloading tube (4) with storehouse pump (10) entrance, and described ash-unloading tube (4) is provided with pneumatic gate valve (5) and the first Pneumatic double gate valve (6); Pump (10) top, described storehouse is provided with the first vacuum pressure relief valve (12);
Described pneumatic carrier (17) is connected with gas-holder (14), and the entrance of described gas-holder (14) is connected with the first nitrogen tube (13), and the entrance of described first nitrogen tube (13) is connected with nitrogen header pipe; Described storehouse pump (10) is connected by pneumatic carrier (17) with cinder storehouse (18), and described pneumatic carrier (17) is provided with the second Pneumatic double gate valve (16), and bottom, described storehouse pump (10) is provided with first class device;
The nitrogen tube that described gas-holder (14) exports is divided into two-way, and a road is connected with described first class device, and another road is connected with described pneumatic carrier (17), is provided with pneumatic ball valve (15) between described gas-holder (14) and storehouse pump (10);
Described cinder storehouse (18) top is provided with top sack cleaner, storehouse (19) and the second vacuum pressure relief valve (20), second gasifying device (30) is provided with in cone bucket under described cinder storehouse (18), the cinder-discharging port of the lower cone bucket of described cinder storehouse (18) bottom is connected with the second hand operated gate valve (21) entrance, and described second hand operated gate valve (21) outlet is connected with dust humidifying agitator (22) entrance; The outlet of described dust humidifying agitator (22) is connected by ash releasing tube (23) with canvas hose (24) entrance;
Described nitrogen header pipe is also connected with the second nitrogen tube (27) entrance, and described second nitrogen tube (27) outlet is divided into two-way, and a road is connected with second gasifying device (30), and another Lu Yucang pushes up sack cleaner (19) and connects;
Relief valve (28) and magnetic valve (29) is established between second nitrogen tube (27) and second gasifying device (30).
2. converter according to claim 1 dry fume dedusting cinder air-transport system, it is characterized in that, under described wet cooling tower (1), cone bucket is provided with the first accident ash-unloading tube (7), and described first accident ash-unloading tube (7) is provided with the first hand operated gate valve (9).
3. converter according to claim 2 dry fume dedusting cinder air-transport system, is characterized in that, be provided with pipe connecting (8) between described ash-unloading tube (4) and the first accident ash-unloading tube (7).
4. converter according to claim 1 dry fume dedusting cinder air-transport system, it is characterized in that, under described cinder storehouse (18), cone bucket is provided with the second accident ash-unloading tube (25), and described second accident ash-unloading tube (25) is provided with the 3rd hand operated gate valve (26).
5. converter according to claim 1 dry fume dedusting cinder air-transport system, it is characterized in that, described wet cooling tower (1) is provided with manhole.
6. converter according to claim 1 dry fume dedusting cinder air-transport system, is characterized in that, bottom, described storehouse pump (10) is provided with water shoot (11).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310263853.XA CN103333983B (en) | 2013-06-28 | 2013-06-28 | Converter primary flue gas dry dedusting and cinder pneumatic transmission system |
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| CN201310263853.XA CN103333983B (en) | 2013-06-28 | 2013-06-28 | Converter primary flue gas dry dedusting and cinder pneumatic transmission system |
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| CN103333983B true CN103333983B (en) | 2015-01-28 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104894330A (en) * | 2015-06-30 | 2015-09-09 | 中冶南方工程技术有限公司 | Anti-scaling evaporation cooling equipment for coal gas dry dedusting of converter |
| 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 |
| CN107760815A (en) * | 2017-11-28 | 2018-03-06 | 中冶南方工程技术有限公司 | The dustless ash discharging system of dry method dust |
| CN108928651A (en) * | 2018-05-30 | 2018-12-04 | 武汉钢铁有限公司 | A kind of closed collection processing/transfer system of metallurgy dedusting ash and technique |
| CN114988119A (en) * | 2022-06-15 | 2022-09-02 | 西安西热水务环保有限公司 | Pneumatic conveying system and method suitable for evaporating high-salinity ash from desulfurization wastewater bypass flue gas of thermal power plant |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57131283A (en) * | 1981-02-06 | 1982-08-14 | Kawasaki Heavy Ind Ltd | Apparatus for treating converter exhaust gas |
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| CN102344987A (en) * | 2011-10-31 | 2012-02-08 | 中冶南方工程技术有限公司 | Primary flue gas dry dedusting process for vanadium recovering converter |
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