CN103727544B - Cement kiln works in coordination with the ash cooling device and technique that process urban garbage system - Google Patents

Cement kiln works in coordination with the ash cooling device and technique that process urban garbage system Download PDF

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Publication number
CN103727544B
CN103727544B CN201410015632.5A CN201410015632A CN103727544B CN 103727544 B CN103727544 B CN 103727544B CN 201410015632 A CN201410015632 A CN 201410015632A CN 103727544 B CN103727544 B CN 103727544B
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ash
cooling
conveying worm
dreg
spiral
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CN103727544A (en
Inventor
何汪海
张平
代伟林
范东燕
许艳丽
周志华
石磊
魏永杰
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CITIC Heavy Industry Engineering Technology Co., Ltd.
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Citic Heavy Industries Co Ltd
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Abstract

The present invention relates to a kind of cement kiln and work in coordination with the ash cooling device and technique that process urban garbage system, including dreg-accepting hopper, air valve and spiral cooler, dreg-accepting hopper is arranged on the slag-drip opening place of L-shaped incinerator, the lower end of dreg-accepting hopper is connected to spiral cooler by air valve, described spiral cooling apparatus has a conveying worm, the shell of conveying worm has interlayer, and the rotating shaft of conveying worm is hollow axle, recirculated cooling water all it is connected with in the shell interlayer of conveying worm and in hollow axle, the discharging opening of conveying worm is arranged below belt conveyor, the discharging end of belt conveyor arranges cinder tank.The high-temperature ash to L-type incinerator that the lime-ash cooling technique of the present invention is adopts cooling water indirectly to cool down, the advantage of this cooling technique is in that will not the burning situation of whole CIU and burning capacity be had a negative impact, and does not result in the situations such as the reduction of manufacture of cement firing system temperature, air quantity increase and operating mode disorder.

Description

Cement kiln works in coordination with the ash cooling device and technique that process urban garbage system
Technical field
The present invention relates to high-temperature material cooling technology field, be specifically related to a kind of cement kiln and work in coordination with the ash cooling device and technique that process urban garbage system.
Background technology
The process of municipal refuse has become the problem that the whole world is paid close attention to, becomes a great research topic of world today's environmental conservation.Current trash processing way is that both treatment technologies exist great drawback based on landfill and burning electricity generation.Landfill method takies a large amount of valuable land resource, and it is long that the time is left in harm;Domestic a lot of destructor plant overload operation, new refuse landfill addressing is increasingly difficult to, and adds the not in place of rubbish later regulation measure, and garbage disposal crisis is probably in more Urban Sprawl.Burning electricity generation then can produce the toxic and harmful such as flying dust and two English, causes secondary pollution.Especially the two English discharges that waste incineration brings, are its main public environment challenges faced.
Unique production technology of the manufacture of cement high temperature of more than 1000 DEG C (alkaline atmosphere) provides excellent condition for processing domestic waste.L-type incinerator is a kind of system of utilizing cement producing line process municipal refuse supporting with cement producing line.The technical process that L-type incinerator processes urban garbage system is as follows: municipal refuse is sealed by municipal administration environmental sanitation department cram packer after being conveyed into factory, delivers to refuse-unloading platform after metering, and end count is sealed up a door and is discharged in garbage storing hole.Homogenizing with grab bucket crane, then feeding disintegrating machine processes, and the rubbish after broken returns in storage hole;Feed machine, belt feeder etc. then through plate to send in incinerator;Draw quality coal in cement kiln systems tertiary air to enter stove and carry out high-temp combustion;The flue gas that burning produces returns cement kiln dore furnace;The lime-ash produced after waste incineration sends into cement raw meal mill after cooling, makes cement raw material dispensing and uses.
Utilizing cement kiln to work in coordination with in the process system processing municipal refuse, the lime-ash that rubbish produces after burning in L-type incinerator needs to process through supercooling.The existing lime-ash type of cooling is air-cooled, and this type of cooling suffers from the drawback that
1, the impact on refuse burning system burning capacity: a large amount of cold airs are blasted cooler, and cooler and L-type incinerator are directly connected to, the cold air in cooler enters incinerator and causes whole CIU temperature drop obvious, and burning capacity declines.
2, on the impact of burning situation in L-type incinerator: owing to the L-type incinerator lime-ash amount of slagging tap is discontinuous, enter the flue-gas temperature fluctuating margin in incinerator through air-cooled cooler relatively big, cause burning circumstance complication in incinerator changeable, it is difficult to control.
3, the impact on manufacture of cement firing system: the flue gas of the air-cooled generation of lime-ash enters cement producing line tertiary air through incinerator, and pathogenic wind-warm can be caused to decline, heat consumption increases.Simultaneously because the load that air quantity increase can make kiln tail high-temperature blower increases, power consumption increases.In addition the fluctuation of temperature also can make the operating mode disorder of cement production system, and impact is normal to be produced.
Therefore, exploitation one can either meet lime-ash cooling, the cooling technology that refuse burning system and cement production system have a negative impact will not just be seemed extremely important again.
Summary of the invention
It is an object of the invention to the deficiency for solving above-mentioned technical problem, it is provided that a kind of cement kiln is worked in coordination with and processed the ash cooling device of urban garbage system and technique, have can continuous discharge, safety is high, ensure that the advantage such as burning capacity of incinerator.
The present invention solves above-mentioned technical problem, the technical scheme provided is: the ash cooling device processing urban garbage system worked in coordination with by cement kiln, in order to cool down the high-temperature ash that L-shaped incinerator is discharged, described chiller includes dreg-accepting hopper, air valve and spiral cooler, dreg-accepting hopper is arranged on the slag-drip opening place of L-shaped incinerator, the lower end of dreg-accepting hopper is connected to spiral cooler by air valve, described spiral cooling apparatus has a conveying worm, the shell of conveying worm has interlayer, and the rotating shaft of conveying worm is hollow axle, recirculated cooling water all it is connected with in the shell interlayer of conveying worm and in hollow axle, the discharging opening of conveying worm is arranged below belt conveyor, the discharging end of belt conveyor arranges cinder tank.
Described dreg-accepting hopper is connected to three-way valve by air valve, and two outfans of three-way valve connect two spiral coolers respectively.
The lime-ash cooling technique processing urban garbage system worked in coordination with by cement kiln, and cooling procedure is:
1), L-shaped incinerator discharge high-temperature ash discharged by dreg-accepting hopper, the lower end of dreg-accepting hopper arranges air valve, and air valve can effectively reduce leaking out of system in the process of lime-ash blanking;
2), the high-temperature ash fallen from air valve respectively enters two spiral coolers by three-way valve, high-temperature ash is along with carrying out heat exchange with the cooling water in the cold water of the shell interlayer of spiral cooler and spiral cooler central shaft in the process of helical blade propelling simultaneously in spiral cooler, and the temperature of the cooling water after heat exchange is 50~150 DEG C;
3), from spiral cooler, the ash temperature of discharge, lower than 200 DEG C, is transferred in cinder tank through belt conveyor.
Beneficial effect
1, the high-temperature ash to L-type incinerator that the lime-ash cooling technique of the present invention is adopts cooling water indirectly to cool down, the advantage of this cooling technique is in that will not the burning situation of whole CIU and burning capacity be had a negative impact, and does not result in the situations such as the reduction of manufacture of cement firing system temperature, air quantity increase and operating mode disorder.
2, the ash cooling device of the present invention arranges air valve and three-way valve between dreg-accepting hopper and spiral cooler, can reduce refuse burning system and leak out while ensureing smooth blanking.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the ash cooling device of the present invention;
Labelling in figure: 1, L-shaped incinerator, 2, dreg-accepting hopper, 3, air valve, 4, spiral cooler, 5, belt conveyor, 6, cinder tank, 7, three-way valve.
Detailed description of the invention
As shown in the figure: the ash cooling device processing urban garbage system worked in coordination with by cement kiln, in order to cool down the high-temperature ash that L-shaped incinerator 1 is discharged, described chiller includes dreg-accepting hopper 2, air valve 3 and spiral cooler 4, dreg-accepting hopper 2 is arranged on the slag-drip opening place of L-shaped incinerator 1, the lower end of dreg-accepting hopper 2 is connected to spiral cooler 4 by air valve 3, described spiral cooler 4 has a conveying worm, the shell of conveying worm has interlayer, and the rotating shaft of conveying worm is hollow axle, recirculated cooling water all it is connected with in the shell interlayer of conveying worm and in hollow axle, the discharging opening of conveying worm is arranged below belt conveyor 5, the discharging end of belt conveyor 5 arranges cinder tank 6.Described dreg-accepting hopper 2 is connected to three-way valve 7 by air valve 3, and two outfans of three-way valve 7 connect two spiral coolers 4 respectively.The ash cooling device of the present invention arranges air valve 3 and three-way valve 7 between dreg-accepting hopper 2 and spiral cooler 4, can reduce refuse burning system and leak out while ensureing smooth blanking.
Technique that the high-temperature ash processed in urban garbage system cools down is to utilize above-mentioned cold slag device that cement kiln is worked in coordination with:
1), the high-temperature ash discharged of L-shaped incinerator 1 discharged by dreg-accepting hopper 2, the lower end of dreg-accepting hopper 2 arranges air valve 3, and air valve 3 can effectively reduce leaking out of system in the process of lime-ash blanking;
2), the high-temperature ash fallen from air valve 3 respectively enters two spiral coolers 4 by three-way valve 7, high-temperature ash is along with carrying out heat exchange with the cooling water in the cold water of the shell interlayer of spiral cooler 4 and spiral cooler 4 central shaft in the process of helical blade propelling simultaneously in spiral cooler 4, and the temperature of the cooling water after heat exchange is 50~150 DEG C;
3), from spiral cooler 4, the ash temperature of discharge, lower than 200 DEG C, is transferred in cinder tank 6 through belt conveyor 5.
The high-temperature ash to L-type incinerator that the lime-ash cooling technique of the present invention is adopts cooling water indirectly to cool down, the advantage of this cooling technique is in that will not the burning situation of whole CIU and burning capacity be had a negative impact, and does not result in the situations such as the reduction of manufacture of cement firing system temperature, air quantity increase and operating mode disorder.

Claims (2)

1. the ash cooling device processing urban garbage system worked in coordination with by cement kiln, in order to cool down the high-temperature ash that L-shaped incinerator is discharged, it is characterized in that: described chiller includes dreg-accepting hopper, air valve and spiral cooler, dreg-accepting hopper is arranged on the slag-drip opening place of L-shaped incinerator, the lower end of dreg-accepting hopper is connected to three-way valve by air valve, two outfans of three-way valve connect two spiral coolers respectively, described spiral cooling apparatus has a conveying worm, the shell of conveying worm has interlayer, and the rotating shaft of conveying worm is hollow axle, recirculated cooling water all it is connected with in the shell interlayer of conveying worm and in hollow axle, the discharging opening of conveying worm is arranged below belt conveyor, the discharging end of belt conveyor arranges cinder tank.
2. the lime-ash cooling technique processing urban garbage system worked in coordination with by cement kiln, it is characterised in that: cooling procedure is:
1), L-shaped incinerator discharge high-temperature ash discharged by dreg-accepting hopper, the lower end of dreg-accepting hopper arranges air valve, and air valve can effectively reduce leaking out of system in the process of lime-ash blanking;
2), the high-temperature ash fallen from air valve respectively enters two spiral coolers by three-way valve, high-temperature ash is along with carrying out heat exchange with the cooling water in the cold water of the shell interlayer of spiral cooler and spiral cooler central shaft in the process of helical blade propelling simultaneously in spiral cooler, and the temperature of the cooling water after heat exchange is 50~150 DEG C;
3), from spiral cooler, the ash temperature of discharge, lower than 200 DEG C, is transferred in cinder tank through belt conveyor.
CN201410015632.5A 2014-01-14 2014-01-14 Cement kiln works in coordination with the ash cooling device and technique that process urban garbage system Active CN103727544B (en)

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CN104550201B (en) * 2015-01-14 2015-11-18 江苏鹏飞集团股份有限公司 A kind of cement kiln associated treatment house refuse system and method thereof

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CN2183502Y (en) * 1993-08-03 1994-11-23 杨文灿 Double-tube spiral-rolling water-cooling type slag dry-cooling machine
CN2230873Y (en) * 1995-02-20 1996-07-10 青岛锅炉辅机除渣设备厂 Screw cinder cooling apparatus
DE29825240U1 (en) * 1998-07-10 2006-12-14 Hitachi Power Europe Gmbh Wet pocket system used in steam generator, has wet pocket formed with rising portion for mechanically discharging fine-grain and unmelted ash, and feeding unit for transferring and transporting water and ash for subsequent treatment
JP4926781B2 (en) * 2007-03-27 2012-05-09 住友大阪セメント株式会社 High moisture content waste treatment method and treatment equipment
CN101412470B (en) * 2008-09-05 2012-03-07 江苏省冶金设计院有限公司 Rotating material bed equipment and discharge mechanism thereof
CN101988703B (en) * 2010-12-01 2012-06-06 中信重工机械股份有限公司 Vertical precombustion furnace, horizontal rotary furnace and vertical discharging device combined garbage incinerator
CN102954478B (en) * 2012-12-12 2015-11-25 中国电力工程顾问集团华东电力设计院有限公司 A kind of dry Slagoff method of the wind and water combined cooling of pulverized-coal fired boiler and system
CN203771422U (en) * 2014-01-14 2014-08-13 中信重工机械股份有限公司 Ash cooling system of cement kiln for cooperatively treating municipal garbage

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