CN103361458A - A humidity adjusting device for a blast furnace blast system - Google Patents
A humidity adjusting device for a blast furnace blast system Download PDFInfo
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- CN103361458A CN103361458A CN2013103379994A CN201310337999A CN103361458A CN 103361458 A CN103361458 A CN 103361458A CN 2013103379994 A CN2013103379994 A CN 2013103379994A CN 201310337999 A CN201310337999 A CN 201310337999A CN 103361458 A CN103361458 A CN 103361458A
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Abstract
The invention relates to a humidity adjusting device for a blast furnace blast system. The humidity adjusting device employs industrial waste heat as a heat source gas. The humidity adjusting device comprises a runner-type dehumidifier (1) capable of regeneration after cyclic dehumidification, a processing air pipeline, a heat exchanger (9) and a regeneration air pipeline, wherein the runner-type dehumidifier (1) comprises a dehumidification zone (2) and a regeneration zone (3); the processing air pipeline sends air to be processed into the dehumidification zone (2) to be dehumidified; and the regeneration air pipeline sends regenerated air heated by heat exchange into the regeneration zone (3) to be used as a driving heat source for the runner-type dehumidifier (1). The heat source gas is one of blast furnace coke-oven gas, high-temperature waste gas of hot blast stoves, industrial heating furnace waste heat, and pipe network steam. The humidity adjusting device achieves a flexible application of a runner system in a blast furnace ironmaking technology, and achieves effects of dehumidifying in summer and humidifying in winter. The system is safe, stable, efficient and energy-saving.
Description
Technical field
The present invention relates to the blast furnace ironmaking field, be specifically related to the Blast Furnace Blower System humidity control apparatus.
Background technology
The blast furnace blast contained humidity not only will consume certain heat in hotblast stove heat-processed, and can react with coke in blast furnace ironmaking process, this reaction be thermo-negative reaction a: C (Gu)+H
2O (gas)=CO (gas)+H
2(gas) 131.3kJ.
Air blast is brought into to decompose in hygroscopic water (being water vapour) zone of combustion before the air port (temperature is more than 1600 ℃) of blast furnace and is absorbed heat (13440kJ/kg water), and these heats will be burnt to replenish by coke.After the air blast dehumidifying, owing to saved the heat of water vapour decomposition and consumption, the in addition improvement of the working of a furnace, coke ratio will reduce, blast furnace blast dehumidifying 1g/m
3, coke ratio reduces by 0.8～1kg/t.
In the blast furnace actual production, want the big coal injection ratio and must accomplish about 1250 ℃ of wind-warm syndrome, fine fodder (low slag, stable components etc.), oxygen enrichment 5%～8% and blast furnace blast dehumidifying.The every reduction of hygroscopic water 1g/m in the air blast
3, theoretical combustion temperature can improve 5～6 ℃, in the situation that other smelting condition is constant, can increase the coal ejection ratio about 2.23kg/t.
If ambient moisture is excessively low, such as the winter of cold district, directly air blast also can affect the operation of blast furnace economy, and at this moment, hope can suitably be carried out humidification to air.By the moisture control measure, when reducing energy consumption cost, also can improve blase furnace cast iron output, can produce obvious economic benefit.
Rotary-type dehydrating unit of the prior art, characteristics are to realize degree of depth dehumidifying, particularly utilize Shanghai Communications University's composite drying agent rotary wheel device, adopt physics and chemisorption coupling process, realization can realize lower regeneration temperature and the dehumidification rate of Geng Gao to the modification of traditional sorbing material such as silica gel.Its principle of work is the regeneration air (can be steam heating, gas heating or flue gas heating etc.) that utilizes after heating, breeding blanket by the desiccant wheel device, regeneration runner siccative, siccative after the regeneration is under the drive of motor, rotate into the dehumidifying district, process air and flow through the dehumidifying district, the agent absorption that is dried of its hygroscopic water reaches effect on moisture extraction.Adopted the desiccant material of elegant flow process, processing the air dew point temperature can reach below-40 ℃, Chinese invention patent application No.200710045901.2.7 for example, the applying date 2007.09.13 that " can utilize the two-stage rotating wheel formula dehumidification air conditioner device of low-grade heat source ", but this dehydrating unit not yet is applied to the dehumidifying of Blast Furnace Blower System.
Summary of the invention
The purpose of this invention is to provide a kind of should be in the Blast Furnace Blower System humidity control apparatus, be to utilize the blast furnace waste heat to drive rotary wheel type Dehumidifier, Blast Furnace Blower System is dehumidified or humidification, but the Effective Raise utilization efficiency of heat energy.
For addressing the above problem, the present invention proposes following technical scheme:
A kind of Blast Furnace Blower System humidity control apparatus is to adopt industrial exhaust heat as thermal source gas, and it comprises rotary wheel type Dehumidifier 1, processing air pipe line, interchanger 9, the regeneration air pipe line of regenerating behind the energy circulating dehumidification with dehumidifying district 2 and breeding blanket 3; Process air pipe line and will process air input dehumidifying district 2 and dehumidify, the regeneration air pipe line will be inputted breeding blanket 3 as the driving heat source of rotary wheel type Dehumidifier 1 through exchanging the regeneration air of heating; Described thermal source gas is a kind of in blast furnace raw gas, hotblast stove high-temp waste gas, industrial heating furnace waste heat, the pipe network steam.
Described interchanger 9 is gas-to-gas heat exchanger, and the air channel entrance is equipped with filtration unit.
The airduct of described processing air pipe line and regeneration air pipe line is made by the thermal insulation material of heat-resisting moisture-proof, and all is provided with fire distinguishing device at the bend place of each root airduct.
Described rotary wheel type Dehumidifier 1 comprises shell 5, places strainer, runner and runner motor 4 in the shell, and strainer places the place ahead of runner; Runner is wrapped up by aluminium shell, sealed is divided into two sector regions: dehumidifying district 2 and breeding blanket 3, Area Ratio is 3:1, two regional locations are fixed, the runner center is by runner motor (4) driven rotary, through dehumidifying district 2 and breeding blanket 3, runner is the silica gel molecular sieve runner take the matrix material material as base material circularly.
Flow through rotary wheel type Dehumidifier regeneration air and to process air be countercurrent flow, and breeding blanket wind speed and dehumidifying district wind speed all are controlled at 2.5～3m/s.
When thermal source gas is blast furnace raw gas, be following dehydrating unit:
The part blast furnace raw gas is introduced interchanger 9, carry out heat exchange with regeneration air, after regeneration air was heated to 120 ℃, the breeding blanket 3 of input rotary wheel type Dehumidifier 1 was as the driving heat source of rotary wheel type Dehumidifier 1, and then the blower fan 12 by the breeding blanket outlet enters in the environment; Raw gas after the heat exchange is introduced burning in the hotblast stove 16;
Process air after 2 dehumidifying of the dehumidifying district of rotary wheel type Dehumidifier 1, input hotblast stove 16 is heated to 1000-1600 ℃, and then air blast is to blast furnace.
When thermal source gas is the hotblast stove high-temp waste gas, be following dehydrating unit:
Blast furnace raw gas inputted in the hotblast stove 16 act as a fuel, the high-temp waste gas input heat exchanger 9 that hotblast stove produces is as thermal source gas, carry out heat exchange with regeneration air, as the driving heat source of rotary wheel type Dehumidifier 1, then the blower fan 12 by the breeding blanket outlet enters in the environment regeneration air that heats up through exchange through the breeding blanket 3 of rotary wheel type Dehumidifier 1;
After processing dehumidifying district 2 dehumidifying of air by rotary wheel type Dehumidifier 1, input hotblast stove 16 is heated to 1000-1600 ℃, and then air blast is to blast furnace.
When thermal source gas is pipe network steam or industry heating furnace exhaust, be following dehydrating unit:
Thermal source gas input heat exchanger 9 and regeneration air are carried out heat exchange, and the regeneration air that heats up through exchange passes the breeding blanket 3 of rotary wheel type Dehumidifier 1 as the driving heat source of rotary wheel type Dehumidifier 1, and then the blower fan 12 by the breeding blanket outlet enters in the environment;
Process air after 2 dehumidifying of the dehumidifying district of airduct 13 introducing rotary wheel type Dehumidifiers 1, input hotblast stove 16 is heated to 1600 ℃, and then air blast is to blast furnace.
When thermal source gas is high-temperature steam, drive the combination dehydrating unit of absorption refrigerating machine dehumidification by condensation and rotary wheel dehumidifying for following heat:
The high-temperature steam of iron work is introduced heat drive absorption refrigerating machine as thermal source, carry out cooling and dehumidifying to processing air; Then will further dehumidify through the dehumidifying district 2 of the processing air of cooling and dehumidifying input rotary wheel type Dehumidifier 1, through the air of aforesaid combination dehumidifying, input hotblast stove and be heated to 1600 ℃, then air blast is to blast furnace;
Thermal source gas is carried out heat exchange through steam airduct 17 input heat exchangers 9 with regeneration air, as the driving heat source of rotary wheel type Dehumidifier 1, then the blower fan 12 by the breeding blanket outlet enters in the environment regeneration air that heats up through exchange through the breeding blanket 3 of rotary wheel type Dehumidifier 1.
Described heat drives the absorption refrigerating machine dehumidification by condensation and has following structure: high-temperature steam is introduced the producer of absorption refrigeration unit 22 by airduct 17, the water that cooling tower is 21 li flows in the condenser of absorption refrigeration unit 22 by cooling-water pump 20, the cold water that absorption refrigeration unit 22 produces flows into surface cooler 19, process air and introduce surface cooler 19 by airduct 13, dehumidifying is cooled.
Described absorption refrigeration unit is steam double-effect lithium bromide absorption type.
When thermal source gas is high-temperature steam, be following humidifying device:
Regeneration air is introduced interchanger 9 by airduct 10, described high-temperature steam is by another air channel of interchanger 9, regeneration air is heated, regeneration air flows into the breeding blanket 3 of rotary wheel type Dehumidifier 1 through interchanger 9, take away the moisture that sorbent material adsorbs in the desiccant wheel, through the regeneration air of above-mentioned humidification, the input hotblast stove is heated to 1600-2200 ℃, and then air blast is to blast furnace;
Process air by the dehumidifying district 2 of airduct 13 input rotary wheel type Dehumidifiers 1, discharge via processing blower fan 23 again after the dehumidifying.
Compared with prior art, the present invention relates to several application schemes about blast furnace blast combination rotary wheel dehumidifying or humidification, mainly comprise the desiccant wheel, processing wind path footpath system, interchanger, regeneration wind path footpath system and the required thermal source of different schemes that have except the energy circulating dehumidification of wet zone and regeneration zone.The present invention has proposed four kinds of dehumidifying and a kind of adding humidity project in conjunction with the desiccant wheel technology according to different weather condition and blast furnace operating mode, and wherein dehumidifying scheme comprises utilizes raw gas waste heat, industrial heating furnace waste heat, pipe network steam as the rotary wheel dehumidifying of regeneration thermal source and in conjunction with the compound-dehumidifying of condensation process.Adding humidity project be under the too dry condition of air with desiccant wheel in the moisture that adsorbs of sorbent material send into the purpose that realizes humidification in the blast furnace by gas blower.The dehumidification system for runner that adopts in the such scheme comprises the rotary dehumidifier of regenerating behind rotary wheel dehumidifying zone and regeneration zone and the energy circulating dehumidification; The both sides in rotary wheel dehumidifying zone arrange respectively regeneration air entrance airduct and regeneration air outlet airduct.According to different thermals source and different array modes regeneration and pipeline are designed, these are used for different blast furnace blast dehumidifying and adding humidity project based on dehumidification system for runner, stable, efficient energy-saving, and can adjust flexibly according to different operating modes.
Description of drawings
Fig. 1 is the structural representation that utilizes raw gas to dehumidify as thermal source gas of Blast Furnace Blower System humidity control apparatus of the present invention;
Fig. 2 is that the high-temperature flue gas that utilizes roasting kiln of Blast Furnace Blower System humidity control apparatus of the present invention is made the structural representation that thermal source gas dehumidifies;
Fig. 3 is the structural representation that utilizes steam to dehumidify as thermal source gas of Blast Furnace Blower System humidity control apparatus of the present invention;
Fig. 4 is the structural representation that the heat of Blast Furnace Blower System humidity control apparatus of the present invention drives absorption refrigerating machine dehumidification by condensation and rotary wheel dehumidifying combination.
Fig. 5 be Blast Furnace Blower System humidity control apparatus of the present invention winter rotary wheel humidifying structural representation.
Fig. 6 is the structural representation of the rotary dehumidifier of Blast Furnace Blower System humidity control apparatus of the present invention.
Reference numeral:
Rotary wheel type Dehumidifier 1 dehumidifying district 2
Shell 5 blast furnaces 6
Raw gas is drawn airduct 7 raw gas and is drawn airduct butterfly valve 8
Interchanger 9 regeneration airs are introduced airduct 10
Regeneration air is introduced airduct butterfly valve 11 regeneration blower fans 12
Process gas inlet airduct 13 and process gas inlet airduct butterfly valve 14
Blast furnace blowing engine 15 hotblast stoves 16
Embodiment
Below in conjunction with accompanying drawing technical scheme of the present invention is described in detail.
The present invention has provided five kinds of schemes of utilizing the blast furnace waste heat to drive desiccant wheel dehumidifying and humidification.Can be divided into five different systems according to thermal source and dehumidifying/humidifying, be respectively and utilize raw gas waste heat, industrial heating furnace waste heat, pipe network steam for the rotary wheel dehumidifying of regeneration thermal source, in conjunction with the compound-dehumidifying system of condensation process, and humidification system.
Referring to Fig. 1, utilize the raw gas waste heat as the rotary wheel dehumidifying method of regeneration thermal source, the high temperature raw gas that blast furnace 6 produces is drawn airduct 7 by raw gas and is incorporated into interchanger 9, this raw gas is drawn and raw gas is installed on the pipeline of airduct 7 is drawn airduct butterfly valve 8, and the raw gas outlet of interchanger 9 links to each other with the entrance of hotblast stove 16 by an airduct again.Another air channel entrance of interchanger 9: on the pipeline of regeneration air introducing airduct 10 regeneration air is installed and is introduced airduct butterfly valve 11, another outlet of interchanger 9 connects the entrance of breeding blanket 3 by airduct, the outlet of breeding blanket 3 connects regeneration blower fan 12 by airduct, and what wherein flow through is regeneration air.Be equipped with on the processing gas inlet airduct 13 of dehumidifying district 2 entrances and process gas inlet airduct butterfly valve 14, the outlet in dehumidifying district 2 is connected with airduct successively with the entrance of blast furnace blowing engine 15, hotblast stove 16, blast furnace 6, and what wherein flow into is to process air.Waste gas was discharged by airduct after raw gas burnt in hotblast stove 16.
The high temperature raw gas that blast furnace 6 produces is drawn airduct 7 by raw gas and is drawn a part and enter interchanger 9, carries out heat exchange with regeneration air, and regeneration air is heated to 120 ℃, and 3 regenerate in the breeding blanket, and regeneration air enters in the environment via regeneration blower fan 12.Again the raw gas after the heat exchange is introduced burning in the hotblast stove 16 by airduct, process entering hot blast 6 stoves 16 by blast furnace blowing engine 15 after air distinguishes 2 by dehumidifying, be heated to 1600 ℃ high temperature, deliver to 6 li in blast furnace.
The method mainly utilizes blast furnace raw gas as auxiliary thermal source, by heat exchange the regeneration air in the runner is heated first, recycles the processing air that its chemical energy heating that obtains in Combustion of Hot Air Furnace blasts blast furnace.
Referring to Fig. 2, utilize the high-temperature flue gas of hotblast stove 16 as the rotary wheel dehumidifying method of regeneration thermal source.The high temperature raw gas that blast furnace 6 produces is drawn the fuel gas inlet that airduct 7 is introduced hotblast stove 16 by raw gas, this raw gas is drawn airduct 7 and raw gas is installed is drawn airduct dish valve 8, high-temp waste gas in hotblast stove 16 after the burning passes through the entrance of airduct inflow heat exchanger 9, and discharges by the outlet of interchanger 9.Interchanger 9 another air channel entrances: regeneration air is introduced airduct 10, and regeneration air introducing airduct butterfly valve 11 is equipped with in this air channel, and interchanger 9 outlets are connected with airduct successively with breeding blanket 3, regeneration blower fan 12, wherein flow into regeneration air.Be equipped with on the processing gas inlet airduct 13 of dehumidifying district 2 entrances and process gas inlet airduct butterfly valve 14, the outlet in dehumidifying district 2 is connected with airduct successively with the entrance of blast furnace blowing engine 15, hotblast stove 16, blast furnace 6.
The high temperature raw gas that blast furnace 6 is discharged is drawn airduct 7 by raw gas and is introduced burning in the hotblast stove 16, the high-temp waste gas that the raw gas burning produces is introduced interchanger 9 by airduct, carry out heat exchange with regeneration air, regeneration air is heated to 120 ℃, 3 regenerate in the breeding blanket, and regeneration air enters in the environment via regeneration blower fan 12.Process entering hotblast stove 16 by blast furnace blowing engine 15 after air distinguishes 2 by dehumidifying, be heated to 1600 ℃ high temperature, deliver to 6 li in blast furnace.
The method also is mainly to utilize the high temperature raw gas as auxiliary thermal source, and is just different from the described raw gas utilization order of last method.Utilized before this chemical energy of its gained that burns in hotblast stove to heat the processing air that is blasted blast furnace, the flue gas after will burning again passes into interchanger thermal regeneration air, enters in the atmosphere at last.
Referring to Fig. 3, the steam of iron work is introduced interchanger 9 as the regeneration thermal source by steam airduct 17, and regeneration air is introduced airduct 10 by regeneration air and introduced interchanger 9, carries out heat exchange with steam, and regenerating in the breeding blanket 3 of flowing through again, discharges by regeneration blower fan 12.When blast furnace 6 waste heat amounts are done other purposes not or, supply with the fuel such as Sweet natural gas from the outside by outside combustion gas in/out air tube 18 as the thermal source of hotblast stove 16, process the treated gas inlet airduct 13 of air and introduce dehumidifying district 2, flow into hotblast stoves 16 by blast furnace blowing engine 15 again and be heated to high temperature about 1600 ℃, send into blast furnace 6.
The method mainly considers when by products such as raw gas in the blast furnace not or when other use are arranged, and the steam in the used vapour pipe network is as the desiccant wheel thermal source of regenerating, and utilize outside combustion gas etc. as thermal source heating send into the processing air of air blast blast furnace.
Referring to Fig. 4, the steam of iron work is introduced the generator inlet of absorption refrigeration unit 22 with airduct, cooling tower 21 water inlet pipe and water outlet pipes link to each other with the condenser of absorption refrigeration unit 22, and the chilled water gangway of absorption refrigeration unit 22 links to each other by the watercourse port of water pipe with surface cooler 19.Air is introduced the air channel entrance of surface cooler 19 by processing gas inlet airduct 13, this air channel is equipped with and is processed gas inlet airduct butterfly valve 14.Surface cooler 19 ducting outlets are connected by airduct successively with dehumidifying district 2 entrances, dehumidifying district's 2 outlets, gas blower 15, hotblast stove 16.High-temperature steam is introduced by steam airduct 17 in an air channel of interchanger 9, and the regeneration thermal source is heated.Another air channel entrance of interchanger 9: regeneration air is introduced airduct 10 regeneration air introducing airduct butterfly valve 11 is installed, and outlet connects breeding blanket 3 entrances, breeding blanket 3 by airduct outlet connects regeneration blower fan 12 by airduct, wherein flows through regeneration air.
Drive absorption refrigerating machine dehumidification by condensation and rotary wheel dehumidifying combination dehumanization method, high-temperature steam in the iron work is introduced the producer of absorption refrigeration unit 22 by steam airduct 17, the water that cooling tower is 21 li flows in the condenser of absorption refrigeration unit 22 by cooling-water pump 20.The cold water that absorption refrigeration unit 22 produces flows into surface cooler 19, air is introduced surface cooler 19 by processing gas inlet airduct 13, and the dehumidifying that is cooled enters dehumidifying district 2 again and further dehumidified, enter hotblast stove 16 by blast furnace blowing engine 15 again and be heated, send in the blast furnace 6.Air is introduced in the airduct 10 introducing interchanger 9 by regeneration air and is heated, and regenerates through breeding blanket 3 again, discharges by regeneration blower fan 12.High-temperature steam is introduced by steam airduct 17 in interchanger 9 another air channels, and the regeneration thermal source is heated.
This scheme utilizes steam driven double-effect absorption refrigerating machine group to produce 7～12 ℃ of refrigerated waters, first blast furnace wind pushing temperature and humidity are reduced by surface cooler, this moment, dehumanization method was dehumidification by condensation, approximately can humidity handling to 11～13g/kg dry air, then utilize runner further to dehumidify and arrive the 7g/kg dry air, after hotblast stove is heated to wind pushing temperature, deliver to blast furnace.This system can realize preferential rotary wheel dehumidifying by intelligent control and different operational modes are set, and the rotary wheel dehumidifying economy descends in the time of maybe can not satisfying the air-supply humidity requirement, starts the combination dehumidification mode.Heat drives absorption refrigerating machine except satisfying blast furnace combination dehumidifying requirement, also can be used for the refrigeration air-conditioner demand in plant area's office building, workshop etc.Here the thermal source that adopts can be steam, also can be the same with above-mentioned three methods, adopt raw gas process furnace and fume afterheat, and realize energy-saving and emission-reduction by the comprehensive energy utilization.The assembled scheme absorptionmachine need to arrange refrigerating plant room, needs to arrange cooling tower, and the occupation of land aspect can be larger, and initial cost also increases a part, but modulability is strong, and use range is not only dehumidifying, can also solve the needs such as necessary air-conditioning of office and work area.
Described absorption refrigeration unit 22 is steam double-effect lithium bromide absorption type.
Embodiment humidification in 5 winter
Referring to Fig. 5, in the winter rotary wheel humidifying method, air is introduced airduct 10 by regeneration air and is introduced interchanger 9, this regeneration air is introduced regeneration air introducing airduct butterfly valve 11 is installed on airduct 10 pipelines, another air channel that the steam of blast furnace factory is introduced interchanger 9 by steam airduct 17, regeneration air is heated, regeneration air flows into breeding blanket 3 through interchanger 9, take away moisture, breeding blanket 3 is connected by airduct successively with blast furnace blowing engine 15, hotblast stove 16, damp and hot regeneration air flows into hotblast stove 16 by blast furnace blowing engine 15 again, enters 6 li in blast furnace.Process air and introduce the district 2 that dehumidifies, the entrance in dehumidifying district 2 by processing gas inlet airduct 13: process gas inlet airduct 13 processing gas inlet airduct butterfly valve 14 is installed, discharge via processing blower fan 23 again after the dehumidifying.
The method considers that mainly ambient moisture is lower, and air is too dry also to be disadvantageous for blast furnace production process.At this moment, desiccant wheel system regeneration link does not need well heater work, ambient air directly passes through runner, sorbent material absorption in the dehumidified runner of airborne moisture, runner forwards to when processing air section, at treatment zone the moisture of desiccant wheel absorption is taken away after the heating of blast furnace air-supply heater via, this moment, atmospheric moisture increased, temperature reduces, and is heated to suitable temp behind gas blower, is sent to blast furnace.Because whole process is water adsorption/desorption process, therefore belong to water-free humidification, only by the switching of operational mode, can realize the function of dehumidifying in summer, winter humidification.
Rotary wheel type Dehumidifier 1 of the present invention comprises shell 5, places runner strainer, desiccant wheel and runner motor 4 in the shell 5.The runner strainer places a side of desiccant wheel.Runner is wrapped up by aluminium shell, and sealed is divided into two sector regions: dehumidifying district 2 and breeding blanket 3, and Area Ratio is 3:1, and two regional locations are fixed, and the center of runner connects a runner motor 4 and drives the runner rotation, circularly through two zones.Runner is the silica gel molecular sieve runner take the matrix material material as base material.
Above-mentioned five kinds of described interchanger of device are gas-gas heat exchanger, and the air channel entrance is equipped with filtration unit.
The airduct that above-mentioned five kinds of devices adopt is made by the thermal insulation material of heat-resisting moisture-proof, and all is provided with fire distinguishing device at the bend place of each root airduct.
Flow through runner regeneration air and to process air be countercurrent flow.And breeding blanket wind speed and dehumidifying district wind speed all are controlled at 2.5～3m/s.
Claims (12)
1. Blast Furnace Blower System humidity control apparatus, be to adopt industrial exhaust heat as thermal source gas, it is characterized in that: it comprises rotary wheel type Dehumidifier (1), processing air pipe line, interchanger (9), the regeneration air pipe line of regenerating behind the energy circulating dehumidification with dehumidifying district (2) and breeding blanket (3); Process air pipe line and will process air input dehumidifying district (2) and dehumidify, the regeneration air pipe line will be inputted breeding blanket (3) as the driving heat source of rotary wheel type Dehumidifier (1) through exchanging the regeneration air of heating; Described thermal source gas is a kind of in blast furnace raw gas, hotblast stove high-temp waste gas, industrial heating furnace waste heat, the pipe network steam.
2. Blast Furnace Blower System humidity control apparatus according to claim 1, described interchanger (9) is gas-to-gas heat exchanger, and the air channel entrance is equipped with filtration unit.
3. Blast Furnace Blower System humidity control apparatus according to claim 1, the airduct of described processing air pipe line and regeneration air pipe line is made by the thermal insulation material of heat-resisting moisture-proof, and all is provided with fire distinguishing device at the bend place of each root airduct.
4. Blast Furnace Blower System humidity control apparatus according to claim 1 is characterized in that: described rotary wheel type Dehumidifier (1) comprises shell (5), places strainer, runner and runner motor (4) in the shell, and strainer places the place ahead of runner; Runner is wrapped up by aluminium shell, sealed is divided into two sector regions: dehumidifying district (2) and breeding blanket (3), Area Ratio is 3:1, two regional locations are fixed, the runner center is by runner motor (4) driven rotary, through dehumidifying district (2) and breeding blanket (3), runner is the silica gel molecular sieve runner take the matrix material material as base material circularly.
5. Blast Furnace Blower System humidity control apparatus according to claim 1 is characterized in that, the regeneration air of the rotary wheel type Dehumidifier of flowing through and processing air are countercurrent flow, and the breeding blanket wind speed all is controlled at 2.5～3m/s with dehumidifying district wind speed.
6. Blast Furnace Blower System humidity control apparatus as claimed in claim 1 is characterized in that: when thermal source gas is blast furnace raw gas, be following dehydrating unit:
The part blast furnace raw gas is introduced interchanger (9), carry out heat exchange with regeneration air, after regeneration air is heated to 120 ℃, the breeding blanket (3) of input rotary wheel type Dehumidifier (1) is as the driving heat source of rotary wheel type Dehumidifier (1), and then the blower fan (12) by the breeding blanket outlet enters in the environment; Raw gas after the heat exchange is introduced burning in the hotblast stove (16);
Process air after the dehumidifying of the dehumidifying district (2) of rotary wheel type Dehumidifier (1), input hotblast stove (16) is heated to 1000-1600 ℃, and then air blast is to blast furnace.
7. Blast Furnace Blower System humidity control apparatus as claimed in claim 1 is characterized in that: when thermal source gas is the hotblast stove high-temp waste gas, be following dehydrating unit:
Blast furnace raw gas inputted in the hotblast stove (16) act as a fuel, the high-temp waste gas input heat exchanger (9) that hotblast stove produces is as thermal source gas, carry out heat exchange with regeneration air, as the driving heat source of rotary wheel type Dehumidifier (1), then the blower fan (12) by the breeding blanket outlet enters in the environment regeneration air that heats up through exchange through the breeding blanket (3) of rotary wheel type Dehumidifier (1);
After will processing dehumidifying district (2) dehumidifying of air by rotary wheel type Dehumidifier (1), input hotblast stove (16) is heated to 1000-1600 ℃, and then air blast is to blast furnace.
8. Blast Furnace Blower System humidity control apparatus as claimed in claim 1 is characterized in that: when thermal source gas is pipe network steam or industry heating furnace exhaust, be following dehydrating unit:
Thermal source gas input heat exchanger (9) and regeneration air are carried out heat exchange, the regeneration air that heats up through exchange passes the breeding blanket (3) of rotary wheel type Dehumidifier (1) as the driving heat source of rotary wheel type Dehumidifier (1), and then the blower fan (12) by the breeding blanket outlet enters in the environment;
Process air after the dehumidifying of the dehumidifying district (2) of airduct (13) introducing rotary wheel type Dehumidifier (1), input hotblast stove (16) is heated to 1600 ℃, and then air blast is to blast furnace.
9. Blast Furnace Blower System humidity control apparatus as claimed in claim 1 is characterized in that: when thermal source gas is high-temperature steam, be the combination dehydrating unit that following heat drives absorption refrigerating machine dehumidification by condensation and rotary wheel dehumidifying:
The high-temperature steam of iron work is introduced heat drive absorption refrigerating machine as thermal source, carry out cooling and dehumidifying to processing air; Then will input through the processing air of cooling and dehumidifying the further dehumidifying of dehumidifying district (2) of rotary wheel type Dehumidifier (1), through the air of aforesaid combination dehumidifying, the input hotblast stove is heated to 1600 ℃, and then air blast is to blast furnace;
Thermal source gas is carried out heat exchange through steam airduct (17) input heat exchanger (9) and regeneration air, as the driving heat source of rotary wheel type Dehumidifier (1), then the blower fan (12) by the breeding blanket outlet enters in the environment regeneration air that heats up through exchange through the breeding blanket (3) of rotary wheel type Dehumidifier (1).
10. Blast Furnace Blower System humidity control apparatus as claimed in claim 9, it is characterized in that: described heat drives the absorption refrigerating machine dehumidification by condensation and has following structure: high-temperature steam is introduced the producer of absorption refrigeration unit (22) by airduct (17), the inner water of cooling tower (21) flows in the condenser of absorption refrigeration unit (22) by cooling-water pump (20), the cold water that absorption refrigeration unit (22) produces flows into surface cooler (19), process air and introduce surface cooler (19) by airduct (13), dehumidifying is cooled.
11. Blast Furnace Blower System humidity control apparatus according to claim 9 is characterized in that: described absorption refrigeration unit is steam double-effect lithium bromide absorption type.
12. a Blast Furnace Blower System humidity control apparatus is to adopt industrial exhaust heat as thermal source gas, it is characterized in that: when thermal source gas is high-temperature steam, be following humidifying device:
Regeneration air is introduced interchanger (9) by airduct (10), described high-temperature steam is by another air channel of interchanger (9), regeneration air is heated, regeneration air flows into the breeding blanket (3) of rotary wheel type Dehumidifier (1) through interchanger (9), take away the moisture that sorbent material adsorbs in the desiccant wheel, through the regeneration air of above-mentioned humidification, the input hotblast stove is heated to 1600-2200 ℃, and then air blast is to blast furnace;
Process air by the dehumidifying district (2) of airduct (13) input rotary wheel type Dehumidifier (1), discharge via processing blower fan (23) again after the dehumidifying.
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| CN2013103379994A CN103361458A (en) | 2013-08-06 | 2013-08-06 | A humidity adjusting device for a blast furnace blast system |
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| CN2013103379994A CN103361458A (en) | 2013-08-06 | 2013-08-06 | A humidity adjusting device for a blast furnace blast system |
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| CN105536450A (en) * | 2015-12-22 | 2016-05-04 | 安徽理工大学 | Fume dehumidification process |
| CN107119164A (en) * | 2017-04-26 | 2017-09-01 | 中冶南方工程技术有限公司 | Hot-blast stove fume waste heat dries the process system of blast furnace gas |
| CN107238179A (en) * | 2017-06-13 | 2017-10-10 | 美的集团武汉制冷设备有限公司 | Control method, conditioner, computer-readable recording medium and air conditioner |
| CN108893569A (en) * | 2018-06-14 | 2018-11-27 | 山东钢铁股份有限公司 | A kind of blast furnace blast moisture separator and its dehumidification method |
| WO2020177302A1 (en) * | 2019-03-04 | 2020-09-10 | 中冶南方工程技术有限公司 | Method for utilizing cold-air heat of blast furnace axial flow blower, and hot blast stove system |
| CN111663014A (en) * | 2020-07-07 | 2020-09-15 | 河北津西钢铁集团重工科技有限公司 | Low-energy-consumption metallurgical blast furnace equipment |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105536450A (en) * | 2015-12-22 | 2016-05-04 | 安徽理工大学 | Fume dehumidification process |
| CN105536450B (en) * | 2015-12-22 | 2017-11-24 | 安徽理工大学 | A kind of flue gas dehumidification process |
| CN107119164A (en) * | 2017-04-26 | 2017-09-01 | 中冶南方工程技术有限公司 | Hot-blast stove fume waste heat dries the process system of blast furnace gas |
| CN107238179A (en) * | 2017-06-13 | 2017-10-10 | 美的集团武汉制冷设备有限公司 | Control method, conditioner, computer-readable recording medium and air conditioner |
| CN108893569A (en) * | 2018-06-14 | 2018-11-27 | 山东钢铁股份有限公司 | A kind of blast furnace blast moisture separator and its dehumidification method |
| WO2020177302A1 (en) * | 2019-03-04 | 2020-09-10 | 中冶南方工程技术有限公司 | Method for utilizing cold-air heat of blast furnace axial flow blower, and hot blast stove system |
| CN111663014A (en) * | 2020-07-07 | 2020-09-15 | 河北津西钢铁集团重工科技有限公司 | Low-energy-consumption metallurgical blast furnace equipment |
| CN111663014B (en) * | 2020-07-07 | 2021-11-05 | 河北津西钢铁集团重工科技有限公司 | Low-energy-consumption metallurgical blast furnace equipment |
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