CN105318734A - Device and method for applying and purifying waste heat of low-temperature waste gas of large sintering flue - Google Patents

Device and method for applying and purifying waste heat of low-temperature waste gas of large sintering flue Download PDF

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CN105318734A
CN105318734A CN201510140656.8A CN201510140656A CN105318734A CN 105318734 A CN105318734 A CN 105318734A CN 201510140656 A CN201510140656 A CN 201510140656A CN 105318734 A CN105318734 A CN 105318734A
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flue gas
low
device
flue
temperature
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CN201510140656.8A
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李正福
李宁燕
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李正福
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection
    • Y02A50/20Air quality improvement or preservation
    • Y02A50/23Emission reduction or control
    • Y02A50/234Physical or chemical processes, e.g. absorption, adsorption or filtering, characterised by the type of pollutant
    • Y02A50/2344Nitrogen oxides [NOx]

Abstract

The invention provides a device and method for applying and purifying waste heat of low-temperature waste gas of a large sintering flue. According to the device, dust in the smoke is preprocessed through a horizontal and vertical multi-pipe dedusting device; tiny dust in the smoke is absorbed through a bag-type dust remover; low-temperature energy sources are recycled and the temperature of the smoke is decreased through an energy source recycling device; dioxin in the waste gas is adsorbed through an active carbon adsorbing device; the flow and flow rate of the smoke are adjusted through a variable-frequency controlled main exhaust fan and a booster fan jointly; ozone and the smoke are mixed through an ozone preparing and blowing device and a smoke mixed reaction device, and nitrogen oxide is forced to be oxidized; low-temperature desulfuration and denitration are conducted through a desulfuration and denitration system by means of spraying. According to the device and method, the pollutant emission index is superior to the national special emission limit, and both the investment cost and the operation cost are low; meanwhile, the phenomena of chimney smoke plumes and misty rain are reduced, and waste of water sources is reduced; in addition, the system performance is stable, operation is easy, maintenance is convenient, and remarkable economic benefits and good social benefits are achieved.

Description

The waste heat application of a kind of sintering large flue low temperature waste gas and purifier and method

Technical field:

The invention belongs to low temperature waste gas UTILIZATION OF VESIDUAL HEAT IN and purification techniques field, particularly relate to Ferrous Metallurgy sintering large flue waste gas low temperature heat and comprehensive regulation purification, comprise the device of the gas cleanings such as low-temperature energy sources recovery, dedusting, Tuo bioxin, desulphurization and denitration.

Background technology:

1, smelter sinter fume and flue dust feature: 1. exhaust gas volumn is large, average sintering deposit per ton produces 4300-6000m 3flue gas; 2. by the impact of sintering machine raw material mix, greatly, stack outlet temperature controls at general control at 120-150 DEG C for smoke components and temperature fluctuation; 3. flue gas SO 2relative concentration is lower, NO xlower than power-plant flue gas concentration of emission; 4. smoke components is complicated, and because sintering process uses multiple former (combustion) material, therefore sinter fume is more complicated relative to power-plant flue gas composition, except containing except steam, also containing N 2, O 2, CO 2, SO 2, NO x, the multiple harmful gaseous pollutant such as HF, bioxin, and the solid contaminant such as iron dust containing, heavy metal; 5. flue gas oxygen content is relatively high; 6. flue gas negative pressure is high: generally reach-15000 ~-21000Pa etc.

2, flue gas of sintering machine head udst separation plays national requirements for environmental protection for 2015 and discharges especially and be restricted to: dust emission is at 40mg/m 3below, SO 2be emitted on 180mg/m 3, NO xbe emitted on 300mg/m 3, dioxin emission 0.5ng-TEQ/kg.

3, current domestic main udst separation standard configuration device: electric precipitation+desulfurizer, domestic indivedual key enterprise such as Taiyuan Iron and Steel Co. adopts: electric precipitation+charcoal absorption+ammoniacal liquor denitrification apparatus.Electric precipitation+desulfurizer, can only desulfurization, and effect is single.Electric precipitation+charcoal absorption+ammoniacal liquor denitrification apparatus, although can qualified discharge, one-time investment and operating cost too high, under current iron and steel meagre profit or loss situation, cause enterprise to produce and be difficult to bear, be difficult at home popularize in an all-round way.

4, the fume desulphurization method of current domestic usual employing is lime/lime stone-gypsum wet, and the method efficiency comparison is high, reaches more than 70% in China market occupation rate.But this aspect is only ensure desulfurized effect, large effect be there is no to denitration, de-bioxin.

5, current domestic head dedusting generally adopts electrostatic precipitator, as the standard configuration of sintering circuit.The development of head electrostatic precipitator starts from the mid-80, apart from nearly 30 years the present history, and along with the progress of science and technology, the dust removing effects of head electrostatic precipitator by the past≤150mg/m 3, be progressively reduced to≤100mg/m 3discharge standard, substantially meet national requirements≤100mg/m 3discharge standard, the head electrostatic precipitator of four electric fields even run, dust removing effects reaches 50-80mg/m 3.Within 2015, domestic beginning implements special restriction, concentration of emission≤40mg/m in developed regions 3, due to the problems that electric precipitation exists, higher than bag-type dust, (current sack cleaner discharges special limit value concentration of emission≤15mg/m far away to cause concentration of emission 3).Therefore the existing electric dust collector of a kind of new equipment replacement is needed.

6, energy recovery and the low-temp desulfurization problem of complex utilization of large flue low-temperature flue gas is sintered.Current China energy utilization rate is low, and wherein steel enterprise sintering operation is more outstanding, and the used heat produced has a large capacity and a wide range.Sintering machine every square meter sintering area exhaust gas volumn per minute is 100-110m 3/ min.m 2, large flue discharges flue gas general control at 120-150 DEG C, at present domestic not recovery and utilization.And discharge after entering desulphurization system desulfurization after the direct dedusting of flue gas, for wet desulphurization, temperature height not only reduces desulfuration efficiency, and after desulfurization, there is the long plume of chimney and misty rain phenomenon, cause a large amount of wastes of low-temperature energy sources and water resource, therefore seek better technical scheme from energy recovery and raising desulfuration efficiency needs.

7, due to sintering system complexity and there is present situation, particularly existing main exhaust fan, wet desulphurization device, together with how flue gas of sintering machine head udst separation being closely connected with Business Economic Benefit, the special emission limit of country can being met, can effectively reduce construction investment and operating cost again.Consider from current technical standpoint, only can not tackle stern challenge by the way of monotechnics, can not the improvement difficult problem of package solution flue gas of sintering machine head.When current environment protection treating pressure increases the weight of day by day, the improvement of sintering circuit smoke comprehensive, effectively recycling are seemed particularly important.Therefore must open up new approaches, in conjunction with current present situation, seek the higher smoke comprehensive governing system of cost performance, and the sinter fume comprehensive treatment device that comprehensively can be widely applied in industry.

Summary of the invention:

For the above-mentioned problems that existing sintering large flue waste gas purification exists, the main purpose of technical scheme provided by the invention is:

The waste heat application of a kind of sintering large flue low temperature waste gas and purifier and method are provided.

To achieve these goals, present invention employs following technical scheme:

The waste heat application of a kind of sintering large flue low temperature waste gas and purifier, is characterized in that comprising:

Be arranged between sintering large flue and chimney, reclaim low temperature waste gas energy and purify the waste gas sintering large flue and discharge;

The multi-pipe dust removing device anyhow, lithium bromide refrigerating device, absorbent charcoal adsorber, bag-type dust collector, main exhaust fan, booster fan, Ozone generation blowing device, flue gas mixed reactor, wet desulphurization denitrification apparatus and the blowdown stack that are communicated with successively with sintering large flue; Said apparatus Combination application, the low-temperature energy sources realizing sintering large flue waste gas reclaims, dedusting, Tuo bioxin, desulphurization and denitration gas cleaning qualified discharge.

2, multi-pipe dust removing device anyhow as claimed in claim 1, is characterized in that, multi-pipe dust removing device adopts integral structure anyhow, and horizontal type cyclone and vertical cyclone combine to be arranged, the first order is horizontal type, and the second level is vertical.Deduster bottom arranges ash bucket, and installs feeding, discharge position meter, electric heater unit and hopper wall vibrator.

3, lithium bromide refrigerating low-temperature energy sources retracting device as claimed in claim 1, it is characterized in that, lithium bromide refrigerating low-temperature energy sources retracting device is used for the recovery of the sintering 120-150 degree low-temperature flue gas energy and makes 5-15 degree cold water, be supplied to full factory cold water pipe network, reduce moisture in flue gas, dry flue gas simultaneously.

4, absorbent charcoal adsorber as claimed in claim 1, is characterized in that, absorbent charcoal adsorber is used for the nozzle be delivered to by acticarbon in pipe, winding-up active carbon the bioxin adsorbed in pipeline waste gases, and the active carbon of absorption can utilize by secondary after collecting.

5, bag-type dust collector as claimed in claim 1, is characterized in that, bag-type dust collector is for absorbing minute dusts in flue and active carbon.Described bag-type dust collector is integrated, and deduster bottom arranges ash bucket, and installs feeding, discharge position meter, electric heater unit and hopper wall vibrator.

6, main exhaust fan as claimed in claim 1, is characterized in that, main exhaust fan utilizes existing blower fan, extracts sintering large flue waste gas;

7, booster fan as claimed in claim 1, is characterized in that, booster fan is in conjunction with the ruuning situation of main exhaust fan, and variable frequency adjustment carries out supercharging to flue gas, and for regulating the wind speed flow of waste gas in pipeline.

8, Ozone generation blowing device as claimed in claim 1, is characterized in that, ozone for the preparation of ozone, and is jetted in mixing duct by Ozone generation blowing device.

9, flue gas mixed reactor as claimed in claim 1, is characterized in that, flue gas mixed reactor is for mixing ozone and flue gas, and antioxidant nitroxide.

10, wet desulphurization denitrification apparatus as claimed in claim 1 and blowdown stack, it is characterized in that, wet desulphurization denitrification apparatus is used for the flue gas after flue gas mixed oxidization to enter existing desulfurizing tower, utilize desulfurizing agent lime/lime stone to carry out low-temp desulfurization, denitration, blowdown stack is used for sintering clean flue gas qualified discharge.

11, preferably, main exhaust fan as claimed in claim 1 adopts VFC, controls, realize flue gas flow rate control, flue gas mixing, antioxidant nitroxide desulphurization denitration, fume emission with booster fan combine regulation.

12, preferably, combine dust pelletizing system as claimed in claim 1, for single flue small sintering machine, reduce the combination of another flue device.

13, preferably, combine dust pelletizing system as claimed in claim 1, low-temp desulfurization device adopts " nicotinic acids " structure, reduces floor space.

14, preferably, combine dust pelletizing system as claimed in claim 1, low-temperature energy sources retracting device not only adopts suction-type lithium bromide heat recovery technology, alternate manner also can be adopted to carry out replacement and reclaim.

15, preferably, combine dust pelletizing system as claimed in claim 1, low temperature wet method desulfuring and denitrifying apparatus also can adopt other as alternative in semidry method, dry method etc.

The waste heat application of a kind of sintering large flue low temperature waste gas and purification method, wherein, comprise the steps:

Step one, provides a kind of sintering large flue waste gas;

Step 2, utilizes multi-pipe dust removing device anyhow to trap crude particle dust in flue gas;

Step 3, utilizes lithium bromide refrigerating device reclaim the low-temperature flue gas energy and make 5-15 degree cold water;

Step 4, utilizes the bioxin in absorbent charcoal adsorber absorption pipeline waste gases;

Step 5, utilizes bag-type dust collector for absorbing the minute dusts in flue, purifying smoke;

Step 6, utilizes main exhaust fan, booster fan to regulate wind speed pressure, the flow of waste gas in pipeline;

Step 7, utilizes Ozone generation blowing device, flue gas mixed reactor mixing ozone and flue gas, and antioxidant nitroxide flue gas carries out mixing, being oxidized;

Step 8, utilizes wet desulphurization denitrification apparatus to carry out low-temp desulfurization denitration, flue gas qualified discharge after purification.

By the enforcement to technical solution of the present invention, following technique effect can be obtained:

1, the object of the present invention is to provide the waste heat application of a kind of sintering large flue low temperature waste gas and purifier, effectively solve many difficult problems that sintering large flue dust pelletizing system at present exists, pollutant emission index not only meets the special emission limit of country, is also greatly better than this standard.It is 40mg/m that emission limit as special in dust requires 3, and this device average emission concentration can reach 20mg/m 3below; SO 2discharge index is 180mg/m 3, reality can be less than 40mg/m 3, NO xstandard is 300mg/m 3, and reality can be less than 150mg/m 3, bioxin standard is 0.5ng-TEQ/m 3, reality can be less than 0.2ng-TEQ/m 3.

2, the present invention has the advantage such as multi-pipe dust removing device, bag-type dust collector, waste gas afterheat recovery unit, absorbent charcoal adsorber, ozone-oxidizing device, wet desulphurization denitrification apparatus anyhow concurrently, integrated application, overcome the shortcoming existed separately, improve efficiency of dust collection.Multiple pollutant can control simultaneously, can singlely control again, and use very convenient, accessory substance does not have secondary pollution, can commercialization process, turns waste into wealth, and is that enterprise increases economic benefit.

3, compared with existing electric precipitation+charcoal absorption+ammoniacal liquor denitrification apparatus, capital expenditure is low, and operating cost is low.

4, reclaim the low-temperature energy sources in waste gas, make low-temperature cold water, decrease energy waste.

5, flue gas of sintering machine head dedusting adopts the present invention, not only efficiently, low energy consumption qualified discharge, and substantially solves the long plume of chimney and misty rain phenomenon, reduces the waste of water resource.

6, contrast with existing electric precipitation+charcoal absorption+ammoniacal liquor denitrification apparatus, present device simply, processing ease, easy to maintenance, and environmental protection, meet recycling economy.

7, the integrated application of apparatus of the present invention, has obvious investment advantage and operating cost advantage, is very applicable to China's national situation, more easily by domestic enterprise is accepted.

Accompanying drawing explanation

Fig. 1 is a kind of structural representation sintering the application of large flue low temperature waste gas waste heat and purifier of the present invention.

Fig. 2 is a kind of FB(flow block) sintering the application of large flue low temperature waste gas waste heat and purification method of the present invention.

Specific implementation method:

Be described technical scheme of the present invention below by way of specific embodiment, with under the conflict free prerequisite of the object of the invention, the technical characteristic in the embodiment hereinafter mentioned and embodiment can combine mutually.

As shown in Figure 1, the technical solution adopted in the present invention is: utilize multi-pipe dust removing device anyhow to trap bulky grain thing, energy source recovery apparatus-lithium bromide refrigerating device is utilized to reclaim low-temperature energy sources, obtain refrigeration cold water to recycle, absorbent charcoal adsorber is utilized to adsorb bioxin in flue gas, utilize finely ground particles and the active carbon after adsorbing in bag-type dust collector trap exhaust, purify air, utilize main exhaust fan, booster fan adjustment flue gas flow and flow velocity, utilize Ozone generation blowing device to prepare ozone and ozone of jetting in flue, flue gas mixed reactor is utilized to carry out the oxidation reaction of flue gas mixing and nitrogen oxide, nitrogen oxide after utilizing wet desulphurization denitrification apparatus to remove SO 2 in waste gas and oxidation, flue gas after purification passes through smoke stack emission, realize heat recovery and the qualified discharge of sinter fume.

A kind of embodiment of sintering machine head end low-temperature flue gas waste heat application of the present invention and comprehensive treatment device comprises: the multi-pipe dust removing device anyhow (3) be connected with large flue (2), lithium bromide refrigerating device (4,5,6), absorbent charcoal adsorber (7,8,9,10), bag-type dust collector (12), main exhaust fan and control device (13,14), booster fan and control device (15,16); And corresponding multi-pipe dust removing device anyhow (A3), lithium bromide refrigerating device (A4, A5, A6), absorbent charcoal adsorber (A7, A8, A9, A10), bag-type dust collector (A12), main exhaust fan and control device (A13, A4), booster fan and the control device (A15, A16) to connect with opposite side large flue (A3); Ozone generation device (17,18,19,20), after both sides flue gas enters flue gas mixing arrangement-tapered pipeline (22) (21) carries out mixed oxidization by mixing blower fan together with ozone, enter low-temp desulfurization denitrating tower (23,24,25) by pipeline again, after flue gas desulfurization and denitrification, enter air through chimney (26).

Described multi-pipe dust removing device anyhow (3) (A3) air inlet is connected by pipeline with large flue (2) (A2), anyhow multi-pipe dust removing device (3) (A3) adopts integral structure, horizontal type cyclone and vertical cyclone combine to be arranged, the first order is horizontal type, and the second level is vertical.Deduster bottom arranges ash bucket, and installs feeding, discharge position meter, electric heater unit and hopper wall vibrator.Remove coarse granule in waste gas, efficiency of dust collection reaches 95%, and in ash silo, iron content dedusting ash transferring raw material field or proportioning room can carry out secondary cycle utilization.

Described lithium bromide refrigerating device (4, 5, 6, A4, A5, A6), be connected with multi-pipe dust removing device (3) (A3) anyhow, 120-150 DEG C of low-temperature energy sources in waste gas is reclaimed by lithium bromide refrigerator (4), make low-temperature cold water, enter cold water storage cistern (5), enter full factory's cold water pipe network (6) afterwards, for steel-making, blast-furnace cooled water uses, not only decrease energy waste, and reduce flue-gas temperature, and humidity in flue gas, for bag-type dust creates conditions below, also reduce the long plume of chimney and the misty rain phenomenon of wet desulphurization denitration spray column simultaneously, reduce the waste of water resource.

Described absorbent charcoal adsorber (7,8,9,10, A7, A8, A9, A10)), be the outer self-contained unit of pipeline.Active carbon is stored in holding vessel (7, A7), by transmission and control metering device (8, A8) quantitatively carry, through conveying fan (9, A9) by nozzle (10, A10), atomization winding-up, in flue, adsorbs bioxin in flue gas.Collecting box (11, A11) collects the active carbon after absorption, reclaims and carries out secondary utilization, also can enter sintered material room and carry out batching use.

Described bag-type dust collector (12, A12), is connected with absorbent charcoal adsorber, finely ground particles and the rear remaining active carbon of absorption in trap exhaust, further purifying smoke.Described bag-type dust collector is integrated, and deduster bottom arranges ash bucket, and installs feeding, discharge position meter, electric heater unit and hopper wall vibrator.

Described main exhaust fan (14, be connected with pipeline between the flue gas discharge opening of air entry A14) and bag-type dust collector (12, A12), the main exhaust fan of modernization system can utilize current existing blower fan apparatus, main exhaust fan controls air quantity and wind speed by frequency-converting control device (13, A13).

The booster fan (16, A16) that described variable frequency adjustment controls (15, A15) connects with main exhaust fan (14, A14) exhaust outlet pipeline, for air quantity and the flow velocity of flue gas in variable frequency adjustment pipeline, meets system process needs.

Described Ozone generation blowing device (17,18,19,20) is the outer self-contained unit of pipeline, ozone generating-device (17) is by control device (18), metering device (19) and shower nozzle equipment (20), according to the content of nitrogen oxides in effluent, ozone is jetted in mixing duct by continuous and quantitative.

Described flue gas mixing arrangement is tapered pipeline (22), tapered pipeline (22) and booster fan (16 above, A16) exhaust outlet connects, and ozone winding-up pipeline is connected with ozone shower nozzle (20), enters in tapered pipeline (22).Be provided with mixing blower fan (21) in tapered pipeline (22), controlled from the flue gas of two large flues, the mixing of ozone by control device, carry out the oxidation of nitrogen oxide.

Described wet desulphurization denitrification apparatus (23,24,25), be connected with tapered pipeline (22) by pipeline, in limestone/lime spray scrubber (23), low-temperature flue gas is washed, in spray column, the slurry pool of bottom enters 3 layers of spray equipment (25) of setting by circulating pump, at the high-valence state nitrogen oxide carried out in circulation simultaneously stability flue gas and oxysulfide.After oxidation reaction, generate calcium sulfate and calcium nitrate, gypsum is produced in calcium sulfate and then crystallization, and after dehydration, outward transport utilizes, and accessory substance calcium nitrate waste water, can be used as the fertilizer of trees and green grass, realizes the zero-emission of waste water.Flue gas after desulphurization denitration purification by chimney (26) discharge, and owing to realizing low-temp desulfurization denitration, has stopped the long plume of chimney and misty rain phenomenon, reduces the waste of water resource.Solve a series of difficult problem of current gas cleaning, achieve heat recovery and the qualified discharge of sinter fume.

Containing temperature-detecting device in the present invention, pressure-detecting device, flow detection, and the checkout gear such as oxygen content, nitrogen oxide, sulfur dioxide, carry out unifying to control in conjunction with fume indication content.Also by PLC and Control System Software, above each device is incorporated in sintering system central control system, automatically adjusts controls in conjunction with the different industrial and mineral of sintering, realize full-automatic production.

Also comprise the waste heat application of a kind of sintering large flue low temperature waste gas and purification method in technical scheme of the present invention, wherein, as shown in Figure 2, comprise the steps:

Step one, provides a kind of sintering large flue waste gas;

Step 2, utilizes multi-pipe dust removing device anyhow to trap crude particle dust in flue gas;

Step 3, utilizes lithium bromide refrigerating device reclaim the low-temperature flue gas energy and make 5-15 degree cold water;

Step 4, utilizes the bioxin in absorbent charcoal adsorber absorption pipeline waste gases;

Step 5, utilizes bag-type dust collector for absorbing the minute dusts in flue, purifying smoke;

Step 6, utilizes main exhaust fan, booster fan to regulate wind speed pressure, the flow of waste gas in pipeline;

Step 7, utilizes Ozone generation blowing device, flue gas mixed reactor mixing ozone and flue gas, and antioxidant nitroxide flue gas carries out mixing, being oxidized;

Step 8, utilizes wet desulphurization denitrification apparatus to carry out low-temp desulfurization denitration, flue gas qualified discharge after purification.

Be not difficult to find, the present invention is by dust in multi-pipe dust removing device pretreated fumes anyhow, utilize the minute dusts in sack cleaner absorption flue gas, energy source recovery apparatus is utilized to reclaim low-temperature energy sources and reduce flue-gas temperature, absorbent charcoal adsorber is utilized to adsorb bioxin in waste gas, by the main exhaust fan of VFC, the flow of booster fan combine regulation flue gas, flow velocity, by Ozone generation blowing device and flue gas mixed reactor mixing ozone and flue gas, forced oxidation nitrogen oxide, low-temp desulfurization is carried out by system for desulfuration and denitration spray, denitration, multiple pollutant can be controlled simultaneously, can singlely control again, use very convenient, accessory substance does not have secondary pollution, can commercialization process, turn waste into wealth.Compared with existing system, pollutant emission index of the present invention is better than the special emission limit of country, and investment cost, operating cost are low, decrease the long plume of chimney and misty rain phenomenon simultaneously, reduce the waste of water resource, for the integrated application of domestic sintering large flue waste gas purification and resource opens the new a kind of approach more having market prospects, really respond national policy, achieved recycling economy and energy-saving and emission-reduction.

The above; be only the specific embodiment of the present invention to be described; only that part of the present invention embodies; can not contain all of the present invention; under not departing from the present invention and designing the prerequisite of spirit; anyly be familiar with those skilled in the art in the technical scope that the present invention discloses, the change that can expect easily, improvement or replacement, all should cover within protection domain that claims of the present invention determines.

Claims (10)

  1. The waste heat application of a kind of sintering large flue low temperature waste gas and purifier and method, is characterized in that comprising:
    1. be arranged between sintering large flue and chimney, reclaim the waste gas of low-temperature flue gas waste heat and the discharge of purification sintering machine head end;
    The multi-pipe dust removing device anyhow, lithium bromide refrigerating device, absorbent charcoal adsorber, bag-type dust collector, main exhaust fan and the booster fan that are communicated with successively with sintering large flue, Ozone generation blowing device, flue gas mixed reactor, wet desulphurization denitrification apparatus and blowdown stack; Said apparatus Combination application, realizes the UTILIZATION OF VESIDUAL HEAT IN of sinter fume and dedusting, Tuo bioxin, desulphurization and denitration gas cleaning qualified discharge.
  2. 2. multi-pipe dust removing device anyhow as claimed in claim 1, is characterized in that, multi-pipe dust removing device adopts integral structure anyhow, and horizontal type cyclone and vertical cyclone combine to be arranged, the first order is horizontal type, and the second level is vertical.Deduster bottom arranges ash bucket, and installs feeding, discharge position meter, electric heater unit and hopper wall vibrator.
  3. 3. lithium bromide refrigerating low-temperature energy sources retracting device as claimed in claim 1, it is characterized in that, lithium bromide refrigerating low-temperature energy sources retracting device is used for the recovery of the sintering 120-150 degree low-temperature flue gas energy and makes 5-15 degree cold water, be supplied to full factory cold water pipe network, reduce moisture in flue gas, dry flue gas simultaneously.
  4. 4. absorbent charcoal adsorber as claimed in claim 1, is characterized in that, absorbent charcoal adsorber is used for the nozzle be delivered to by acticarbon in pipe, quantitatively winding-up active carbon the bioxin adsorbed in pipeline waste gases.
  5. 5. bag-type dust collector as claimed in claim 1, it is characterized in that, bag-type dust collector is for absorbing the minute dusts in flue.Described bag-type dust collector is integrated, and deduster bottom arranges ash bucket, and installs feeding, discharge position meter, electric heater unit and hopper wall vibrator.
  6. 6. main exhaust fan as claimed in claim 1, is characterized in that, main exhaust fan extracts sintering large flue waste gas.
  7. 7. booster fan as claimed in claim 1, it is characterized in that, booster fan is in conjunction with main exhaust fan, and variable frequency adjustment mixes flue gas, supercharging, and for regulating the wind speed flow of waste gas in pipeline.
  8. 8. Ozone generation blowing device as claimed in claim 1, it is characterized in that, ozone for the preparation of ozone, and is quantitatively jetted in mixing duct by Ozone generation blowing device;
  9. 9. flue gas mixed reactor as claimed in claim 1, it is characterized in that, flue gas mixed reactor is for mixing ozone and flue gas, antioxidant nitroxide.
  10. 10. wet desulphurization denitrification apparatus as claimed in claim 1 and blowdown stack, it is characterized in that, wet desulphurization denitrification apparatus enters desulfurizing tower after being used for flue gas mixed oxidization, utilizes desulfurizing agent to carry out low-temp desulfurization, denitration, and blowdown stack is used for the flue gas qualified discharge after by sintering purification.
CN201510140656.8A 2015-03-21 2015-03-21 Device and method for applying and purifying waste heat of low-temperature waste gas of large sintering flue CN105318734A (en)

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CN106288832A (en) * 2016-08-30 2017-01-04 中冶华天工程技术有限公司 A kind of pair takes wind dual pathways sintering circular-cooler waste heat boiler and takes wind flow flexible measurement method
CN106288831A (en) * 2016-08-30 2017-01-04 中冶华天工程技术有限公司 A kind of pair takes wind single channel sintering circular-cooler waste heat boiler and takes wind flow flexible measurement method
CN106323019A (en) * 2016-08-30 2017-01-11 中冶华天工程技术有限公司 Wind pickup flow soft-measuring method for double-pickup single-channel sintering circular cooler waste heat boiler
CN106323020A (en) * 2016-08-30 2017-01-11 中冶华天工程技术有限公司 Wind pickup flow measuring method for double-pickup single-channel sintering circular cooler waste heat boiler
CN106403632A (en) * 2016-08-30 2017-02-15 中冶华天工程技术有限公司 Measurement method for air taking flow of dual-air taking single-channel sinter ring cold machine waste heat boiler
CN106403631A (en) * 2016-08-30 2017-02-15 中冶华天工程技术有限公司 Measuring method for air intake flow of waste heat boiler of double-air-intake double-channel sintering ring cooler
CN108176173A (en) * 2017-12-23 2018-06-19 郭舒洋 A kind of dust processor
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CN108176173A (en) * 2017-12-23 2018-06-19 郭舒洋 A kind of dust processor
CN108970352A (en) * 2018-06-19 2018-12-11 山东师范大学 A kind of flue gas low-temperature denitration method

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