CN201583149U - Waste heat boiler of steel ball dust removing type submerged arc furnace - Google Patents
Waste heat boiler of steel ball dust removing type submerged arc furnace Download PDFInfo
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- CN201583149U CN201583149U CN2009202003780U CN200920200378U CN201583149U CN 201583149 U CN201583149 U CN 201583149U CN 2009202003780 U CN2009202003780 U CN 2009202003780U CN 200920200378 U CN200920200378 U CN 200920200378U CN 201583149 U CN201583149 U CN 201583149U
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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
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
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Abstract
A waste heat boiler of a steel ball dust removing type submerged arc furnace at least comprises a boiler heating surface formed by a serpentine tube group, a boiler flue gas passage of a sealed passage formed at the peripheral part of the boiler heating surface and a furnace roof and a bottom ash bucket, and is characterized in that a steel ball scattering device is arranged at the furnace roof, a steel ball separating and collecting device is arranged under the bottom ash bucket, and a circulating type steel ball mechanical transportation device is arranged between the steel ball scattering device and the steel ball separating and collecting device; and the circulating type steel ball mechanical transportation device comprises driving wheels, driven wheels, a double-row chain, a horizontal guide rail, a steel ball transportation hopper and a mechanical discharge catch wheel, at least one driving wheel and three driven wheels are fixed on the boiler framework, the steel ball transportation hopper is hung on the double-row chain encircled between the driving wheels and the driven wheels, and the mechanical discharge catch wheel capable of overturning the steel ball transportation hopper is arranged at the furnace roof. The utility model has the characteristics of simple structure, renewable steel ball, mechanical automation operation, low investment and operation cost, and good dust removing effect, can collect and eliminate the dust accumulated and adhered on the heating surface of the waste heat boiler, and greatly promotes the energy-saving and emission-reducing technology in the smelting industry of the arc furnace.
Description
Technical field
The utility model relates to a kind of can with reliable, continuously, effective and efficient manner removes the dust stratification on the hot stove waste heat boiler heating surface in ore deposit, guarantees the residual heat boiler of steel ball dedusting type ore heat furnace of the heat transfer efficiency of heating surface, belongs to a kind of waste heat boiler technical field.
Background technology
The hot stove in ore deposit, claim again by " burried arc furnace ", it mainly is meant and is used to produce metallic silicon, Antaciron, manganese-silicon, Nitinol, the electric furnace of products such as calcium carbide, the dust content of the hot stove waste heat boiler in this kind ore deposit reaches 5～20g/Nm3, generally fluctuation about 300～900 ℃ of flue-gas temperature, the diameter of most of dust is 0.1～0.5um in the flue gas, and form by the pelletizing of spherical particle and these particulates, the characteristic of dust is that density is little, thin and light, bonding capacity is good, high adsorption capacity between Electrostatic Absorption and particulate, unsuitable sedimentation, contain SiO2 in the ash, MgO, CaO, Fe2O3, Al2O3, P2O3, Na2O, multiple nano_scale particle such as C, these particulates present the different knots of being stained with under different humidity provinces and humidity, have a strong impact on the recycling of the fume afterheat of this class burried arc furnace, and recovery with flue dust of higher economic worth, this class waste heat boiler does not search out a kind of deashing device of reliable economy so far, how to remove dust stratification on the heating surface effectively continuously and be the key point that such waste heat boiler can stable operation.As far as we know, there is following multiple dedusting type ore heat furnace waste heat boiler in hot stove UTILIZATION OF VESIDUAL HEAT IN field, ore deposit at present:
1, the hot stove waste heat boiler in dust collection by sound wave formula ore deposit:
To the sound wave of heating surface space input certain frequency, with stronger disturbance, reach the effect of removing fouling of heating surface at set intervals to flue gas stream.Its shortcoming is: deashing continuously, and very big in the different parts dust removing effects difference of heating surface, there are a lot of blind areas, and, can bring a large amount of cold airs into during the input sound wave because the boiler negative pressure is bigger, had a strong impact on the thermal efficiency of boiler; The heating surface of different parts differs greatly because of the applied stress value that vibration causes, its anti-fatigue life difference.
2, compressed air or high steam purge the hot stove waste heat boiler in dedusting ore deposit:
Purge to heating surface space input compressed air or high steam at set intervals, reach the effect of removing fouling of heating surface.Its shortcoming is: deashing continuously, and very big in the different parts dust removing effects difference of heating surface, there are a lot of blind areas; Import a large amount of cold air or steam, had a strong impact on the thermal efficiency of boiler; The active force that wind at a high speed or steam have compacting to compress to the above-mentioned grey type of pressing close to tube wall; Especially steam can not use, water vapour bring the junction characteristic of being stained with that will increase this class ash greatly into, the ash that makes moist will have a strong impact on the dust collection effect of low-temperature space; A large amount of compressed air or steam will consume a large amount of energy, and will be very uneconomical.
3, explosion, the hot stove waste heat boiler in shock wave dedusting ore deposit:
Its principle and dust collection by sound wave are similar, and just the explosive combustion with a certain amount of fuel produces outburst shock wave replacement sound wave, has above-mentioned shortcoming equally, and the difficult control of explosive force, and local heating's face easily is damaged.
4, the hot stove waste heat boiler in mechanical vibrator dedusting ore deposit:
Its operation principle is: periodically impact the bar that shakes that closely contacts with heating surface by beater, make the heating surface tube group form body vibration, and the vibrating machine ripple along the heating surface pipe transfers to each geometric point, thereby reach the dedusting purpose.Its advantage be mechanical wave generation, be delivered on time and the Spatial Dimension and be evenly distributed, spread the ash of class for big particulate, pine, as the cement dust in the kiln heat recovery boiler, has extremely good dust removing effects, be extensive use of, shortcoming is that high adsorption capacity, unsuitable such dust ash-removal effect of sedimentation between, Electrostatic Absorption good to nanoscale, bonding capacity and particulate is poor.
5, the hot stove waste heat boiler in complex method dedusting ore deposit:
Its operation principle is: adopt above-mentioned dust collection method more than 2 kinds or 2 kinds simultaneously on the hot stove waste heat boiler in a cover ore deposit.
This method, system complex, investment, maintenance cost are big, and ash-removal effect is also very undesirable.
The utility model content
The purpose of this utility model is to overcome the deficiency that prior art exists, solve the heating surface dust removal problem of the hot stove waste heat boiler in ore deposit and provide a kind of with the shot-cleaning method, continuously, stable, effectively, economical, remove the residual heat boiler of steel ball dedusting type ore heat furnace of dust on the heating surface reliably.
The purpose of this utility model is finished by following technical solution, this waste heat boiler includes a boiler heating surface that is made of the coiled pipe group at least, one forms boiler smoke passage and the furnace roof and the furnace bottom ash bucket of a seal channel around boiler heating surface, described furnace roof is furnished with a steel ball sowing apparatus, and below the furnace bottom ash bucket, be provided with steel ball separated and collected device, between described steel ball sowing apparatus and steel ball separated and collected device, be provided with circulating steel ball mechanical transport device.
Described circulating steel ball mechanical transport device is by driving wheel, driven pulley, double strand chain, horizontal guide rail, the steel ball totebox, mechanical discharging gear wheel constitutes, and described at least one driving wheel and at least three driven pulleys are fixed on the boiler structure, be looped around and hung the steel ball totebox on the double strand chain between above-mentioned driving wheel and the driven pulley, being provided with at described furnace roof place can be with the mechanical discharging gear wheel of steel ball totebox overturning.
Described furnace roof place is provided with by sowing collection bucket and the air-cooled steel ball sowing apparatus of sowing ball (awl) formation, and the described air-cooled ball (awl) of sowing places the expanding mouth place central authorities that sow the collection bucket below.
Steel ball separated and collected device described in the utility model is mainly by the cone-shaped collection bucket, ash pearl segregation section and damper are formed, described grey pearl segregation section is positioned at cone-shaped collection bucket below and interconnects, and evenly is furnished with a plurality of dampers around the bottom of described grey pearl segregation section.
The below of described steel ball separator is provided with mainly by housing, tapered cap; rocking arm; balancing weight, linkage, the steel ball lock wind feeding device that projection is formed; described tapered cap is connected with the rocking arm hinge; rocking arm is fixed on the housing by bearing pin and can rotates around bearing pin, and tapered cap is in closed condition under the flue gas suction function in balancing weight and boiler, and described projection is fixed on double strand chain to be had on the desired location of steel ball totebox.
The utility model compared with prior art, the hot stove waste heat boiler in this shot-cleaning ore deposit can remove reliably, effectively that this density is light, soot particle super thin, Electrostatic Absorption is strong, specific area is big, intermolecular absorption affinity strong, the dust of certain economic value is arranged.Wherein the shot-cleaning device is pure mechanical device, simple in structure, reliable, whole ash disposal system is only under the effect of a motor, can finish steel ball circulation transportation, discharging automatically, automatic overturning steel ball, sow, clean automatically steel ball automatically, the final purpose that realizes the automatic ash disposal of the hot stove waste heat boiler in ore deposit, whole system can be regulated waste heat boiler heating surface deashing speed and relative cleannes by the running speed of regulating motor.
This class shot-cleaning ore deposit hot stove waste heat boiler mechanism is simple, the steel ball reusable edible, can mechanical automation efficiently move, investment and operating cost be low, dust removing effects is good, can remove and collect dust stratification and bonding dirt on the hot stove waste heat boiler heating surface in ore deposit effectively, carry forward vigorously the hot stove melting in ore deposit industry energy-saving emission-reduction technology.
Description of drawings
Fig. 1 is an overall structure schematic diagram of the present utility model.
Fig. 2 is the part-structure schematic diagram of steel ball separated and collected device of the present utility model and steel ball lock wind feeding device.
Fig. 3 is a steel ball totebox structural representation of the present utility model.
Fig. 4 is a steel ball sowing apparatus structural representation of the present utility model.
Fig. 5 is a steel ball separated and collected apparatus structure schematic diagram of the present utility model.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is described in detail: shown in Figure 1, the utility model mainly is made up of boiler heating surface AA, three of boiler smoke channel B B, the dust-removing device for boiler CC three big parts that are mutually related.
Boiler heating surface AA: be to constitute by the coiled pipe group, heated water of stream or steam in the pipe, pipe outflow high temperature ash-laden gas, effect are that the high-temperature physics heat with fume side passes to water or the steam in the pipe efficiently, the heat energy or the potential energy that make water in the pipe or steam have certain value.
Boiler smoke channel B B: around boiler heating surface, form the passage of a sealing, force flue gas to pass through boiler heating surfaces at different levels one by one, and form the furnace roof and the furnace bottom ash bucket that can satisfy the specific demand of steel ball deashing device in the top and the bottom of boiler.
Dust-removing device for boiler CC: be the ore deposit hot stove waste heat boiler key equipment that adapts with this boiler heating surface, flue gas passage structure, layout, can remove the dust stratification on the boiler heating surface reliably, effectively, and the steel ball energy is efficient, succinct, the repeated use of low energy consumption.
Operation principle of the present utility model is: ore deposit hot stove high temperature ash-laden gas passes through boiler heating surface AA at different levels successively under the effect of boiler smoke channel B B, with water or the steam in the heat transferred heating surface of flue gas, ash-laden gas has also polluted heating surface in this process, at this moment according to the outer surface bonding ash of heating surface pollution condition operation steel ball deashing device CC with the removing heating surface, promptly with there being the steel ball of certain kinetic energy that the hot stove waste heat boiler heating surface in ore deposit is impacted continuously, to remove the dust on the boiler heating surface.This steel ball deashing device CC mainly contains 4 key devices: steel ball mechanical transport device A, steel ball is sowed device B, steel ball separated and collected device C, steel ball lock wind feeding device D, as shown in Figure 1, a big mechanical transport circulatory system, constantly collect the steel ball of separating from boiler bottom, be transported to the top of boiler, and steel ball is sowed uniformly on boiler heating surface by sowing device, steel ball is beated between heating surface from top to bottom, constantly descend, final sum part soot particle falls into the steel ball separated and collected device of boiler bottom, steel ball after the separation is by the steel ball lock gas feeding device of bottom, be loaded in the steel ball totebox that hangs on the chain, transported to furnace roof once more, like this dust on the circulation cleaning boiler heating surface.The fine particles that gets off is clearly taken out of boiler by flue gas and is entered the rear portion dust collecting system, and collected ash is a kind of product with higher economic worth, as SILICA FUME etc.
Shown in Figure 1, steel ball mechanical transport device A described in the utility model, it mainly is made up of driving wheel A1, driven pulley A2, double strand chain A3, horizontal guide rail A4, steel ball totebox A5, mechanical discharging gear wheel A6, chain stretching device A7 etc.Driving wheel A1 and three driven pulley A2 are fixed on the boiler structure, the position of two driven pulleys of its middle and lower part can be adjusted in guide rail a little, so that by chain stretching device A7, make the suitable tensioning of whole double strand chain, between double strand chain, hang with steel ball totebox A5 uniformly, the steel ball totebox can rotate around the bearing pin of himself, makes the steel ball totebox no matter in the process that the chain horizontal movement still moves both vertically, and all can keep level all the time.Carry when completely the steel ball totebox of steel ball is delivered to furnace roof, the mechanical discharging gear wheel A6 of furnace roof will be with the steel ball overturning in the steel ball totebox in the steel ball collection bucket at waste heat boiler top.
In whole mechanical transport systems, the utility model is selected systemic circulation mechanical transport mode for use, and this means of transportation is to the lifting efficient height of steel ball, and its conevying efficiency is far longer than the high-speed wind power transfer efficiency, is fit to very much operation continuously.The running speed of driving wheel A1 can be adjusted within the specific limits, and promptly the speed of whole transportation system and freight volume can be adjusted, so that adjust the intensity of shot-cleaning system according to boiler inlet flue gas dustiness and boiler hot area ash situation.Whole transport channel is difficult for by foreign matter jams such as steel ball group, ash group, metal derbies.System wear is little, has overcome problems such as the abrasiveness of old-fashioned high-speed wind power transportation, uneconomical and noise.
Figure 3 shows that steel ball totebox of the present utility model and discharge way, steel ball totebox described in the utility model can satisfy the charge needs, remains the level transportation in the level and the process that moves both vertically, be convenient to the overturning discharging, be convenient to charging, can play functional requirements such as positioning action, bucket flexible overturning to double strand chain.Steel ball totebox A5 shown in the figure mainly is made up of " V " shape bucket A5-1, chimb piece A5-2, contiguous block A5-3, connecting axle A5-4.Below the steel ball totebox of boiler top mechanical discharging gear wheel A6 of certain location design, when the steel ball totebox runs to here, the special chimb piece of steel ball totebox will meet with mechanical discharging gear wheel, the steel ball totebox is toppled over, and the flip angle that makes the steel ball totebox reaches more than 25 °, so that the steel ball of sticking ash in the steel ball totebox is toppled over totally.
Shown in Figure 4, steel ball sowing apparatus B described in the utility model adopts sphere or conical surface mechanical shock to sow, and it mainly is made up of two parts, sows collection bucket B1 and air-cooled ball (awl) B2 that sows, and it is set at described furnace roof place; The described air-cooled ball (awl) of sowing places the expanding mouth place central authorities that sow collection bucket below, and steel ball flows out in the pipeline of sowing collection bucket B1, and that impacts the exit sows ball (awl) B2, and steel ball sowing comes, and throws to boiler heating surface.
Shown in Figure 5, steel ball described in the utility model is collected separator C and mainly is made up of cone-shaped collection bucket C1, grey pearl segregation section C2, damper C3.Steel ball that top falls and part soot particle are by the bottom of cone-shaped collection bucket C1 centralized collection to taper, pearl and ash enter certain cleaning among the cylindrical grey pearl segregation section C2 highly, around the C2 bottom, be furnished with a plurality of damper C3 uniformly, the aperture of adjusting C3 can be regulated from air door and be entered the cleaning air quantity of segregation section (because nearly all hot stove waste heat boiler in ore deposit all is the negative pressure operation, open damper, cleaning wind can suck in the stove automatically), cleaning wind will float ash and all bring the boiler tail dust-precipitator into after passing the steel ball accumulation body.This device characteristic be simple in structure, separate effectively; Can will there be the ash of higher economic worth to concentrate recovery, reduces secondary pollution (purity requirement of itself is higher); Reduce boiler ash bucket bottom ash disposal system, improved working environment simultaneously.
Steel ball lock wind feeding device D shown in Figure 2 is pure mechanical linkage steel ball lock wind device for discharging, and it mainly is made up of housing D1, tapered cap D2, rocking arm D3, balancing weight D4, linkage D5, projection D6 etc.Top is collected separator C with steel ball and is connected, steel ball totebox A5 is aimed in the bottom, tapered cap D2 and rocking arm D3 hinge connect; rocking arm is fixed on housing D1 by bearing pin and goes up and can rotate around bearing pin; be in closed condition (size of balancing weight and position can suitably be adjusted according to vacuum magnitude and top steel ball storage) under the effect of tapered cap flue gas negative pressure in balancing weight D4 and boiler, a certain amount of steel ball can be piled up in the top of tapered cap.Projection D6 is fixed on double strand chain A3 to be had on the desired location of steel ball totebox A5, in the time of when projection runs to linkage D5 with double strand chain under, drivening rod mechanism is rotated, tapered cap will be moved downwards, and open steel ball charging lock wind apparatus, steel ball drops among the steel ball totebox A5 under it, along with moving on of double strand chain, projection and linkage are thrown off, and tapered cap is closed under the effect of balancing weight D4 and negative pressure voluntarily.In this device, the height of adjustable link mechanism and projection is adjusted the aperture of tapered cap, thereby adjusts the amount of putting steel ball.This device mainly contains following advantage: 1. be not easy by foreign matter jam, stuck; 2. pure frame for movement, no pneumatic, electric element, reliability height; 3. be adapted at operation continuously in high temperature, the high ash fouling environment; 4. this device controllability is good, simple in structure; 5. the driving energy source of this device is in the unique kinetic energy apparatus of whole steel ball transportation system--and-driving wheel (variable-frequency motor driving), good with the linkage of whole system, energy consumption is low.In whole steel ball lock wind feeding device, Zhu Men is outward opening because the employing taper falls, and is not easy by foreign matter jam, stuck; And owing to be pure frame for movement, no pneumatic, electric element, the reliability height is opened the horizontal movement that kinetic energy only derives from the bottom chain, has realized the mechanical chain with mechanical transport systems; Device described in the utility model is closed the realization that is used for that relies on the negative pressure in the flue and can regulate weight, and is not only energy-conservation but also reliable; Can effectively lock wind in addition, significantly reduce the cold air amount in the stove that bleeds.
Claims (5)
1. residual heat boiler of steel ball dedusting type ore heat furnace, this waste heat boiler includes a boiler heating surface that is made of the coiled pipe group at least, one forms boiler smoke passage and the furnace roof and the furnace bottom ash bucket of a seal channel around boiler heating surface, one circulating steel ball mechanical ash removing device, it is characterized in that described furnace roof is furnished with a steel ball sowing apparatus, and below the furnace bottom ash bucket, be provided with steel ball separated and collected device, between described steel ball sowing apparatus and steel ball separated and collected device, be provided with circulating steel ball mechanical transport device.
2. residual heat boiler of steel ball dedusting type ore heat furnace according to claim 1, it is characterized in that described circulating steel ball mechanical transport device is by driving wheel, driven pulley, double strand chain, horizontal guide rail, the steel ball totebox, machinery discharging gear wheel constitutes, described at least one driving wheel and at least three driven pulleys are fixed on the boiler structure, be looped around and hung the steel ball totebox on the double strand chain between above-mentioned driving wheel and the driven pulley, being provided with at described furnace roof place can be with the mechanical discharging gear wheel of steel ball totebox overturning.
3. residual heat boiler of steel ball dedusting type ore heat furnace according to claim 1 and 2, it is characterized in that described furnace roof place is provided with by sowing collection bucket and air-cooled ball or the air-cooled steel ball sowing apparatus that constitutes of awl of sowing sowed, describedly air-cooledly sow ball or the air-cooled awl of sowing places the expanding mouth place central authorities that sow the collection bucket below.
4. residual heat boiler of steel ball dedusting type ore heat furnace according to claim 1, it is characterized in that described steel ball separated and collected device is mainly by the cone-shaped collection bucket, ash pearl segregation section and damper are formed, described grey pearl segregation section is positioned at cone-shaped collection bucket below and interconnects, and evenly is furnished with a plurality of dampers around the bottom of described grey pearl segregation section.
5. residual heat boiler of steel ball dedusting type ore heat furnace according to claim 4, the below that it is characterized in that described steel ball separator is provided with mainly by housing, tapered cap; rocking arm; balancing weight; linkage; the steel ball lock wind feeding device that projection is formed; described tapered cap is connected with the rocking arm hinge; rocking arm is fixed on the housing by bearing pin and can rotates around bearing pin; tapered cap is in closed condition under the flue gas suction function in balancing weight and boiler, described projection is fixed on double strand chain to be had on the desired location of steel ball totebox.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009202003780U CN201583149U (en) | 2009-11-05 | 2009-11-05 | Waste heat boiler of steel ball dust removing type submerged arc furnace |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009202003780U CN201583149U (en) | 2009-11-05 | 2009-11-05 | Waste heat boiler of steel ball dust removing type submerged arc furnace |
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| CN201583149U true CN201583149U (en) | 2010-09-15 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102721287A (en) * | 2012-06-12 | 2012-10-10 | 大连易世达新能源发展股份有限公司 | Single-pressure ore-smelting furnace waste heat boiler with mechanical brush ash removal devices |
| CN103471119A (en) * | 2013-08-30 | 2013-12-25 | 江苏太湖锅炉股份有限公司 | Reciprocating ash removal structure for steel balls |
| CN105318341A (en) * | 2014-07-01 | 2016-02-10 | 宁夏天纵泓光余热发电技术有限公司 | Steel-ball dust-removal type submerged-arc-furnace waste heat boiler capable of preventing steel balls from being ejected |
| CN104456588B (en) * | 2014-10-22 | 2018-09-25 | 江苏太湖锅炉股份有限公司 | Steel ball sowing structure |
-
2009
- 2009-11-05 CN CN2009202003780U patent/CN201583149U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102721287A (en) * | 2012-06-12 | 2012-10-10 | 大连易世达新能源发展股份有限公司 | Single-pressure ore-smelting furnace waste heat boiler with mechanical brush ash removal devices |
| CN103471119A (en) * | 2013-08-30 | 2013-12-25 | 江苏太湖锅炉股份有限公司 | Reciprocating ash removal structure for steel balls |
| CN105318341A (en) * | 2014-07-01 | 2016-02-10 | 宁夏天纵泓光余热发电技术有限公司 | Steel-ball dust-removal type submerged-arc-furnace waste heat boiler capable of preventing steel balls from being ejected |
| CN105318341B (en) * | 2014-07-01 | 2018-02-02 | 宁夏天纵泓光余热发电技术有限公司 | The residual heat boiler of steel ball dedusting type ore heat furnace for preventing steel ball from ejecting |
| CN104456588B (en) * | 2014-10-22 | 2018-09-25 | 江苏太湖锅炉股份有限公司 | Steel ball sowing structure |
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Granted publication date: 20100915 Termination date: 20181105 |