CN208933403U - A HIsmelt smelting furnace gas energy recovery and utilization system - Google Patents
A HIsmelt smelting furnace gas energy recovery and utilization system Download PDFInfo
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- CN208933403U CN208933403U CN201821773974.3U CN201821773974U CN208933403U CN 208933403 U CN208933403 U CN 208933403U CN 201821773974 U CN201821773974 U CN 201821773974U CN 208933403 U CN208933403 U CN 208933403U
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/10—Reduction of greenhouse gas [GHG] emissions
- Y02P10/143—Reduction of greenhouse gas [GHG] emissions of methane [CH4]
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Abstract
The utility model discloses a kind of HIsmelt smelting furnace gas energy recycling systems, HIsmelt smelting furnace gas energy recycling system includes sequentially connected gasification cooling flue, high-temperature cyclone dust extractor, waste heat boiler, scrubber, dehydration of gas tower and gas fired-boiler, and the gas exit of dehydration of gas tower is also connected with hot-blast stove.Gasification cooling flue is connected with gasification cooling flue drum, and waste heat boiler is connected with waste heat boiler drum, the gas exit of the gas inlet connecting smelting furnace of gasification cooling flue.Gasification cooling flue cools down to coal gas of high temperature, high-temperature cyclone dust extractor is dusted coal gas, waste heat boiler coal gas is further cooled down, scrubber purifies coal gas, enter in dehydration of gas tower later and coal gas is dried, coal gas after drying respectively enters in gas fired-boiler and hot-blast stove, mixes with the natural gas entered in gas fired-boiler and hot-blast stove and carries out burning utilization.
Description
Technical field
The utility model belongs to HIsmelt smelting furnace gas energy reclaimer technical field, and in particular to a kind of
HIsmelt smelting furnace gas energy recycling system.
Background technique
HIsmelt ironmaking technique of fusion and reduction is one kind using mill coal as main energy sources, directly using originals such as Iron Ore Powders
Material, is reduced into ferriferous oxide with carbon under high temperature fused state the smelting process of metallic iron.This method does not have to coke, sinter
And pellet, it greatly reduced the discharge of CO2, NOx and dioxin, high with simple process, resource and efficiency of energy utilization,
The advantages that environmental pollution is small has very bright application prospect, all the time and the hot spot of iron industry research.
Currently, the universal blast furnace gas calorific value of industry is in 700Kcal or more, such coal gas after purification can directly into
Row burning is used for steam-electric power.But a large amount of calorifics value of gas generated in HIsmelt fusion reducing furnace are in 500Kcal or so, no
It can directly burn, although the coal gas of these high temperature low heat values is worth with huge recycling, containing a large amount of in coal gas
Flue dust.Therefore it is necessary to design a set of effective energy regenerating and utilize system.
1500 DEG C or so can be reached using the coal gas of high temperature that HIsmelt ironmaking technique of fusion and reduction generates, direct emission
It is not only wasted into atmosphere but also causes certain damage to atmospheric environment.
The coal gas system of the melting techniques such as blast furnace is all negative pressure state.But HIsmelt smelting reduction technology is from smelting furnace
Hot fume in the system between scrubber is barotropic state, this also sealing to energy regenerating and cyclic utilization system
Property and stability propose strict requirements.
Summary of the invention
The technical problem to be solved by the utility model is to provide a kind of recyclings of HIsmelt smelting furnace gas energy
System can recycle the energy of HIsmelt melting producer gas and utilization.
In order to solve the above technical problems, the technical solution of the utility model is:
A kind of HIsmelt smelting furnace gas energy recycling system, which is characterized in that the HIsmelt smelting furnace coal
Gas energy recovery utilizing system includes: that sequentially connected gasification cooling flue, high-temperature cyclone dust extractor, waste heat boiler, coal gas are washed
Tower, dehydration of gas tower and gas fired-boiler are washed, the gas exit of the dehydration of gas tower is also connected with hot-blast stove；The Vaporizing cooling
Flue is connected with gasification cooling flue drum；The waste heat boiler is connected with waste heat boiler drum；The gasification cooling flue
Gas inlet connects the gas exit of the smelting furnace.
Further, the hot-blast stove is connect by pipeline with the smelting furnace.
Further, the fire tube of wear-resistant material is installed, the fire tube is arranged in honeycomb, described in the waste heat boiler
Coal gas walks the fire tube.
Further, the lower part of the high-temperature cyclone dust extractor is equipped with unloading valve component, and the unloading valve component includes
Two unloading valves arranged up and down.
Further, the gas fired-boiler is connected with steam-electric power unit.
Further, mixing burner one is provided in the burner hearth of the gas fired-boiler, the mixing burner one is used for low-heat
It is worth the mixing of coal gas and the mixed combustion of natural gas, is provided with heat storage and flame stabilization device one in the burner hearth of the gas fired-boiler.
Further, mixing burner two is provided in the burner hearth of the hot-blast stove, the mixing burner two is used for low heat value
The mixing of coal gas and the mixed combustion of natural gas, the burner hearth of the hot-blast stove are provided with heat storage and flame stabilization device two.
Further, the gas fired-boiler is connected with waste gas spreading chimney.
Further, the gasification cooling flue drum, the waste heat boiler drum pass through pipeline and the gas fired-boiler
Connection.
By adopting the above-described technical solution, the beneficial effects of the utility model are:
HIsmelt smelting furnace gas energy recycling system includes sequentially connected gasification cooling flue, high-temp. vortex
Deduster, waste heat boiler, scrubber, dehydration of gas tower and gas fired-boiler, the gas exit of dehydration of gas tower are also connected with
Hot-blast stove.Gasification cooling flue is connected with gasification cooling flue drum, and waste heat boiler is connected with waste heat boiler drum, Vaporizing cooling
The gas exit of the gas inlet connecting smelting furnace of flue.Gasification cooling flue cools down to coal gas of high temperature, and high-temp. vortex removes
Dirt device is dusted coal gas, and waste heat boiler coal gas is further cooled down, and scrubber purifies coal gas, it is laggard
Enter and coal gas is dried in dehydration of gas tower, the coal gas after drying respectively enters in gas fired-boiler and hot-blast stove, fires with entering
Natural gas in gas boiler and hot-blast stove, which mixes, carries out burning utilization.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of HIsmelt smelting furnace gas energy recycling system of the utility model；
In figure, the direction of arrow indicates the flow direction of fluid；
In figure, 1- gasification cooling flue, 11- gasification cooling flue drum, 2- high-temperature cyclone dust extractor, 21- unloading valve one,
22- unloading valve two, 3- waste heat boiler, 31- waste heat boiler drum, 4- scrubber, 5- dehydration of gas tower, 6- gas fired-boiler,
7- steam-electric power unit, 8- waste gas spreading chimney, 9- hot-blast stove, 10- smelting furnace, 101- exhaust pass.
Specific embodiment
The present invention will be further described with reference to the accompanying drawings and examples.
As shown in connection with fig. 1, a kind of HIsmelt smelting furnace gas energy recycling system, it includes sequentially connected vapour
Change cooling stack 1, high-temperature cyclone dust extractor 2, waste heat boiler 3, scrubber 4, dehydration of gas tower 5 and gas fired-boiler 6, combustion gas
Boiler 6 is connect by pipe network with steam-electric power unit 7.The gas exit of dehydration of gas tower 5 is also connected with hot-blast stove 9, hot-blast stove 9
It is connect by pipeline with smelting furnace 10.
Gasification cooling flue 1 is connected with gasification cooling flue drum 11, gasification cooling flue 1 by tedge and down-comer
It is inside connected with the cooling water of circulation, cooling water and coal gas of high temperature carry out heat exchange in the way of radiation heat transfer, and cooling water absorbs high
The sensible heat of warm coal gas so that coal gas of high temperature by 1450 DEG C of 800 DEG C for dropping to outlet or so, make cooling water be converted into saturated vapor into
Enter and is stored in gasification cooling flue drum 11.1 gas inlet of gasification cooling flue by exhaust pass 101 with connect melting
The gas exit of furnace 10 connects, and gasification cooling flue 1 is " U " type, the exhaust pass 101 connecting with smelting furnace 10 and level side
It is 5~45 ° to included angle, 101 internal coat of exhaust pass has refractory material, and exhaust pass 101 is in tilted layout, so that and high
Warm coal gas flows back in smelting furnace 10 from the high temperature fluid that smelting furnace 10 enters exhaust pass 101 together.5~20m of length, vertically
Highly 5~40m, 1~3m of diameter.
20~50g/Nm of entrance dust content of gas of high-temperature cyclone dust extractor 23, efficiency of dust collection reaches 90% or more, in order to avoid
Influence the normal operation of subsequent waste heat boiler.The lower part of high-temperature cyclone dust extractor 2 is equipped with unloading valve component, unloading valve component
It is mounted on pipeline, unloading valve component preferably includes two unloading valves arranged up and down, unloading valve 21 and unloading valve 2 22.It needs
When unloading ash, the unloading valve 1 being located above first is opened, and dust is allowed to fall into the pipeline between unloading valve 1 and unloading valve 2 22
In, then unloading valve 1 is closed, and the underlying opening of unloading valve 2 22 allows dust to fall, finally, unloading valve 2 22 is closed,
Grey movement is unloaded in completion, and the coal gas for guaranteeing to unload positive pressure during ash does not leak outside.Unloading valve 1 and unloading valve 2 22 beat on and off
It closes using conventional power it is achieved that such as electronic, pneumatic etc., belong to known normal to those skilled in the art
Know, details are not described herein.
Waste heat boiler 3 uses vertical pyramidal structure, and fire tube is arranged in waste heat boiler 3 in honeycomb, and coal gas walks fire tube, this
Sample ensure that coal gas of high temperature can come into full contact with inside the fire tube of waste heat boiler 3 with external cooling water and exchange heat, and solve
800 DEG C or so of gas heat and cooling water heat transfer effect bad problem.To enable coal gas of high temperature to be down to from 800 DEG C
250 DEG C or so, the sensible heat of coal gas of high temperature is allowed further to be recycled.The fire tube of waste heat boiler uses the fire of wear-resistant material
Pipe, or in fire tube internal spray wear-resistant material, such as ceramics etc., it effectively prevent the premature fire of grinding away of the ash-laden gas of high temperature
Pipe, waste heat boiler 3 are connected with waste heat boiler drum 31, the saturated vapor that waste heat boiler 3 generates enter waste heat boiler drum 31 into
Row storage.
Dust content of gas used in this heat transfer process cannot be too big, in order to avoid block waste heat boiler 3 in heat transfer process
Fire tube and cause equipment fault.It is dusted so high-temperature cyclone dust extractor 2 must be arranged before waste heat boiler 3.
Scrubber 4 uses the structure type of the annular seam washing tower of outlet under upper air, and under scrubber 4
The cone valve (not shown) of portion's setting hydraulic control is belonged to those skilled in the art using hydraulic control cone valve
Common knowledge, details are not described herein.The pressure and gas speed of entire gas energy recovery system are controlled by adjusting cone valve, and
It can be adjusted in real time.The spool face of cone valve carries out built-up welding using the welding rod of antifriction metal (AFM) material, prevents in high-speed flow
The premature spool of grinding away of the tiny grains of sand.
Multiple nozzles are installed in the inside of scrubber 4, wash after the water atomization that nozzle sprays it to dust-laden coal gas
It washs, 2~20g/Nm of dust content of gas of scrubber entrance3, the dust content of gas of outlet is 5mg/Nm3Left and right, washes away coal gas
Contained in dust, have the function that purify coal gas.
Dehydration of gas tower 5 effectively removes the water in coal gas using the mode of the dehydration of lower part whirlwind and the dehydration of top filler
Point, so that it is exported the water content < 5g/Nm of coal gas3, reaching does not influence 9 normal combustion of subsequent gas fired-boiler 6 or hot-blast stove
Purpose.
Purified coal gas a part enters gas fired-boiler 6, and the mixing (figure of burner one is provided in the burner hearth of gas fired-boiler 6
In be not shown), mixing of the mixing burner one for the mixed combustion of low-heat value gas and natural gas is provided in the burner hearth of gas fired-boiler 6
One (not shown) of heat storage and flame stabilization device, being mixed into a certain proportion of natural gas makes the low-heat value gas of 500Kcal or so can be with
Stablize burning, solves the problems, such as that low-heat value gas itself is aphlogistic.Under the premise of guaranteeing to stablize burning, natural gas is controlled
Additional amount, make natural gas is mixed into ratio minimum.
Gasification cooling flue drum 11, waste heat boiler drum 31 are connect by pipeline with gas fired-boiler 6.Gas fired-boiler 6 is certainly
Body generates a part of superheated steam, and the saturation of the gasification cooling flue drum 11 and the generation of waste heat boiler drum 31 to upstream is steamed
Vapour carries out the superheated steam that Overheating Treatment generates 430 DEG C.
Gas fired-boiler 6 is connected with waste gas spreading chimney 8, will after the waste gas purification after burning by waste gas spreading chimney 8 into
Row emptying.
Steam-electric power unit 7 is generated electricity using the superheated steam that gas fired-boiler 6 generates, so that the height that smelting furnace 10 generates
The gas reforming of warm low heat value is used at electric power resource.
Mixing two (not shown) of burner is provided in the burner hearth of hot-blast stove 9, mixing burner two is used for low-heat value gas
With the mixing of the mixed combustion of natural gas, the burner hearth of hot-blast stove 9 is provided with two (not shown) of heat storage and flame stabilization device.Purified coal gas
A part, which is mixed into a certain proportion of natural gas into hot-blast stove 9, allows the coal gas of calorific value 500Kcal to stablize burning, solves low
The aphlogistic problem of calorific value of gas itself.And the additional amount of natural gas is controlled, and under the premise of guaranteeing to stablize burning, natural gas
Be mixed into ratio minimum.Coal gas burns in hot-blast stove 9 to be formed in the smelting furnace 10 of hot wind return front, to the molten of smelting furnace 10
Refining process provides institute's calorific requirement.
Heat storage and flame stabilization device one is identical with two structure of heat storage and flame stabilization device, belongs to for a person skilled in the art known normal
Know, details are not described herein.
It can be adjusted into the gas volume of gas fired-boiler 6 and hot-blast stove 9 according to process requirement, guarantee purified coal gas
Sufficiently recycle.
High temperature resistant flexible section is provided on pipeline used in the utility model, for guarantee entire pipeline sealing and
It expands with heat and contract with cold.
Technical characteristic (such as unloading valve one, unloading valve two, the mixing burner with serial number name being related in this specification
One, it is second-class that burner two, heat storage and flame stabilization device one, heat storage and flame stabilization device are mixed), it is only for each technical characteristic is distinguished, not
Represent positional relationship, erection sequence and the job order etc. between each technical characteristic.
In the description of this specification, it is to be understood that the side of the descriptions such as " upper and lower ", " upstream ", " lower part ", " lower section "
Position or positional relationship be orientation or positional relationship based on the figure, it is only for convenient for description the utility model and
Simplify description, rather than the device or element of indication or suggestion meaning must have a particular orientation, with specific orientation construction
And operation, therefore should not be understood as limiting the present invention.
Although the foregoing describe specific embodiment of the present utility model, it should be appreciated by those skilled in the art,
Described embodiment is only a part of the embodiment of the utility model, and instead of all the embodiments, these are only to lift
Example explanation, the protection scope of the utility model is to be defined by the appended claims.Those skilled in the art is without departing substantially from this
It, can be to these embodiments under any creative labor of no process under the premise of the principle and essence of utility model
Various changes or modifications are made, but these change and modification each fall within the protection scope of the utility model.
Claims (9)
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821773974.3U CN208933403U (en) | 2018-10-30 | 2018-10-30 | A HIsmelt smelting furnace gas energy recovery and utilization system |
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| CN201821773974.3U CN208933403U (en) | 2018-10-30 | 2018-10-30 | A HIsmelt smelting furnace gas energy recovery and utilization system |
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| CN208933403U true CN208933403U (en) | 2019-06-04 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110669891A (en) * | 2019-08-29 | 2020-01-10 | 内蒙古赛思普科技有限公司 | Gas recycling device and method for smelting reduction furnace |
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- 2018-10-30 CN CN201821773974.3U patent/CN208933403U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110669891A (en) * | 2019-08-29 | 2020-01-10 | 内蒙古赛思普科技有限公司 | Gas recycling device and method for smelting reduction furnace |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Hebei Xinggang Technology Co.,Ltd. Assignor: SHANDONG MOLONG PETROLEUM MACHINERY Co.,Ltd. Contract record no.: X2023980034949 Denomination of utility model: A HIsmelt Smelting Furnace Gas Energy Recovery and Utilization System Granted publication date: 20190604 License type: Common License Record date: 20230423 |
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| EE01 | Entry into force of recordation of patent licensing contract | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20240712 Address after: 262700 Southwest corner of the intersection of Shenghai East Road and Xingang Road, Yangkou Town, Shouguang City, Weifang City, Shandong Province Patentee after: Shouguang Maolong New Material Technology Development Co.,Ltd. Country or region after: China Address before: 262703 No. 999, Wensheng street, Shouguang City, Weifang City, Shandong Province Patentee before: SHANDONG MOLONG PETROLEUM MACHINERY Co.,Ltd. Country or region before: China |
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| TR01 | Transfer of patent right | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20250826 Granted publication date: 20190604 |
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| PP01 | Preservation of patent right |