CN201901681U - Reduction gas heating device - Google Patents
Reduction gas heating device Download PDFInfo
- Publication number
- CN201901681U CN201901681U CN2010206421548U CN201020642154U CN201901681U CN 201901681 U CN201901681 U CN 201901681U CN 2010206421548 U CN2010206421548 U CN 2010206421548U CN 201020642154 U CN201020642154 U CN 201020642154U CN 201901681 U CN201901681 U CN 201901681U
- Authority
- CN
- China
- Prior art keywords
- gas
- heat exchanger
- temperature
- furnace
- reducing gas
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000010438 heat treatment Methods 0.000 title claims abstract description 18
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 7
- 230000003647 oxidation Effects 0.000 claims abstract description 6
- 239000007789 gas Substances 0.000 abstract description 45
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 11
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 abstract description 11
- 229910052799 carbon Inorganic materials 0.000 abstract description 11
- 239000003546 flue gas Substances 0.000 abstract description 11
- 239000002737 fuel gas Substances 0.000 abstract description 7
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 6
- 239000001301 oxygen Substances 0.000 abstract description 6
- 229910052760 oxygen Inorganic materials 0.000 abstract description 6
- 238000000034 method Methods 0.000 abstract description 4
- 238000002485 combustion reaction Methods 0.000 abstract description 2
- 238000003763 carbonization Methods 0.000 abstract 1
- 230000008021 deposition Effects 0.000 abstract 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 8
- 239000003034 coal gas Substances 0.000 description 8
- 238000004458 analytical method Methods 0.000 description 7
- 238000006243 chemical reaction Methods 0.000 description 5
- 239000003245 coal Substances 0.000 description 5
- 238000004939 coking Methods 0.000 description 5
- 230000001590 oxidative effect Effects 0.000 description 5
- 101100348341 Caenorhabditis elegans gas-1 gene Proteins 0.000 description 4
- 101100447658 Mus musculus Gas1 gene Proteins 0.000 description 4
- 229910052742 iron Inorganic materials 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000000779 smoke Substances 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 101100447665 Mus musculus Gas2 gene Proteins 0.000 description 2
- 101100298048 Mus musculus Pmp22 gene Proteins 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 239000000571 coke Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- KEUKAQNPUBYCIC-UHFFFAOYSA-N ethaneperoxoic acid;hydrogen peroxide Chemical compound OO.CC(=O)OO KEUKAQNPUBYCIC-UHFFFAOYSA-N 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
Images
Landscapes
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
本实用新型公开了一种还原煤气加热装置，包括换热器（1）和底部具有气体喷嘴（5）、顶部具有出口煤气管道（7）的部分氧化炉（6），煤气连接管道（4）一端连接换热器（1）出口，另一端连接部分氧化炉（6）底部入口。所述换热器为管式炉或热风炉。本实用新型的结构简单，利用还原煤气与煤气燃烧后的高温烟气在换热器内气气换热的方式对被加热还原煤气进行预热，预热温度低于析碳温度，可防止还原气析碳堵塞管道，且预热温度低可减少高温烟气用的燃料气用量和烟气排放量。对于换热器预热后的还原煤气，采用牺牲部分还原气与少量氧气混合发生氧化反应的方式，加热效率高，升温速度快，不引起析碳，且不需要燃料气，不外排烟气。
The utility model discloses a reducing gas heating device, which comprises a heat exchanger (1), a partial oxidation furnace (6) with a gas nozzle (5) at the bottom, an outlet gas pipeline (7) at the top, and a gas connection pipeline (4). One end is connected to the outlet of the heat exchanger (1), and the other end is connected to the bottom inlet of the partial oxidation furnace (6). The heat exchanger is a tube furnace or a hot blast furnace. The utility model has a simple structure. The reduced gas and the high-temperature flue gas after combustion of the gas are used to preheat the heated reduced gas in the heat exchanger. The preheating temperature is lower than the carbonization temperature, which can prevent reduction The gaseous carbon clogs the pipeline, and the low preheating temperature can reduce the amount of fuel gas used for high-temperature flue gas and the amount of flue gas emissions. For the reduced gas preheated by the heat exchanger, the method of sacrificing part of the reducing gas mixed with a small amount of oxygen to undergo oxidation reaction has high heating efficiency, fast heating speed, no carbon deposition, no fuel gas is required, and no flue gas is discharged outside .
Description
Technical field
The utility model relates to and a kind of reducing gas is heated to the pyritous treatment unit.
Technical background
Traditional blast furnace process utilizes coke, agglomerate or pellet to produce molten iron, and defective is fairly obvious, a large amount of dischargings of for example shortage of coking coal resource, coking and agglomerating occupation of land and cost, the three wastes or the like.Utilize the short flow process of sponge iron and steel scrap can save coking, the investment of sintering engineering, occupation of land, waste discharge is less, and economy and environmental benefit are fairly obvious.In addition, along with the rise in price of coke, it is with the obvious advantage than blast furnace ironmaking to utilize cheap non-coking coal or fine coal to produce sponge iron, has market outlook preferably.
Utilizing cheap non-coking coal or fine coal to produce sponge iron needs high temperature reduction coal gas (750 ~ 1000 ℃) as reducing medium, and therefore, the reducing gas heating is the important technology of such technology.Steel industry is mainly the hotblast stove heating with the method that coal gas is heated in 750 ~ 1050 ℃ of scopes at present, and hotblast stove is the heat accumulating type heating, and heat-storing material and body of heater investment are higher, and heat exchange efficiency is limited, and fuel gas consumption is big, smog discharge temperature height, large-minded; In addition, the higher reducing gas of CO content may be analysed carbon at 500 ~ 600 ℃, analyses carbon accumulation and can cause line clogging when serious.
In sum, the reducing gas heating unit of steel industry investment at present is high, and fuel gas consumption is big, and smoke discharge amount is big, and easily analyses carbon and cause line clogging, so the reducing gas heating unit needs to improve.
The utility model content
The purpose of this utility model provides a kind of simple in structure, reducing gas heating unit of reducing fuel gas and smoke discharge amount.
To achieve these goals, by the following technical solutions:
A kind of reducing gas heating unit, it is characterized in that: described device comprises that interchanger and bottom have gas jet, the top has the partial oxidation furnace that exports gas line, coal gas connecting tube one end connects heat exchanger exit, the other end connection portion oxidized still bottom inlet.
Described interchanger is tube furnace or hotblast stove.
The utility model beneficial effect:
Of the present utility model simple in structure, utilize the mode of the high-temperature flue gas gas-gas heat exchange in interchanger after reducing gas and the gas-fired to carry out preheating to being heated reducing gas, preheating temperature is lower than analyses the carbon temperature, can prevent to reduce air elutriation carbon blocking pipe, and preheating temperature is low can reduce fuel gas consumption and the smoke discharge amount that high-temperature flue gas is used.For the reducing gas after the interchanger preheating, adopt the sacrificial section reducing gas to mix the mode that oxidizing reaction takes place with minor amounts of oxygen, or the flue gas after the employing combustion parts reducing gas directly feeds the mode in the reducing gas, the reducing gas temperature is increased to analyses outside the carbon temperature, the heating efficiency height, heat-up rate is fast, does not cause to analyse carbon, and do not need fuel gas, not discharged gas fume.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment.
Embodiment
Below in conjunction with drawings and the specific embodiments the utility model is described further.
As shown in Figure 1: a kind of reducing gas heating unit, comprise that interchanger 1 and bottom have gas jet 5, the top has the partial oxidation furnace 6 that exports gas line 7, coal gas connecting tube 4 one ends connect interchanger 1 outlet, the other end connection portion oxidized still 6 bottom inlets.Wherein interchanger 1 is tube furnace or hotblast stove.What select among this embodiment is tube furnace.Heated reducing gas Gas1 enters tube furnace with the high-temperature flue gas Gas2 that heat is provided, be heated reducing gas Gas1 and walk tube furnace tube side 2, high-temperature flue gas Gas2 walks tube furnace shell side 3, mode by gas-gas heat exchange will be heated reducing gas Gas1 and be heated to T1(400 ℃ ~ 500 ℃, do not enter and analyse the carbon temperature range), high-temperature flue gas can obtain by the mode of gas-fired.
Be heated to the reducing gas Gas1 of T1, by coal gas connecting tube 4 entering part oxidized stills 6, adopt the mode of sacrificial section reducing gas and minor amounts of oxygen generation oxidizing reaction, make the reducing gas temperature be increased to T2(750 ~ 1050 ℃ rapidly, analyse outside the carbon temperature), high temperature reduction coal gas is from 7 outputs of outlet gas line then.
The mode of reducing gas and oxygen generation oxidizing reaction can be that oxygen Gas3 mixes back generation oxidizing reaction heating reducing gas by gas jet 5 entering part oxidized stills 6 with Restore All coal gas; Also can be that oxygen mixes back generation oxidizing reaction with partial reduction coal gas, reacted high-temperature flue gas Gas3 be by No. 6 parts of No. 5 part entering parts of gas jet oxidized still and remaining reducing gas Hybrid Heating reducing gas.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206421548U CN201901681U (en) | 2010-12-06 | 2010-12-06 | Reduction gas heating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206421548U CN201901681U (en) | 2010-12-06 | 2010-12-06 | Reduction gas heating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201901681U true CN201901681U (en) | 2011-07-20 |
Family
ID=44272281
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206421548U Expired - Lifetime CN201901681U (en) | 2010-12-06 | 2010-12-06 | Reduction gas heating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201901681U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114395650A (en) * | 2022-02-16 | 2022-04-26 | 新疆八一钢铁股份有限公司 | Carbon precipitation prevention control method for electric heating metallurgical gas |
-
2010
- 2010-12-06 CN CN2010206421548U patent/CN201901681U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114395650A (en) * | 2022-02-16 | 2022-04-26 | 新疆八一钢铁股份有限公司 | Carbon precipitation prevention control method for electric heating metallurgical gas |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110420558A (en) | A kind of denitrating system for grate-kiln pelletizing equipment | |
| CN102851426A (en) | A Direct Reduction Process for Producing Sponge Iron Using Rich CH4 Gas | |
| CN101643809A (en) | Sponge iron production technology by coal gasification | |
| CN106244175B (en) | Fume high-temperature carbon restores denitration and heat-energy recovering apparatus | |
| CN106669418A (en) | Device and method for comprehensively carrying out desulfurization, denitration and dioxin removing on steel sintering flue gas | |
| CN102876824A (en) | Method for guaranteeing high blast temperature by using blast furnace gas | |
| CN204085215U (en) | A kind of electrical arc furnace flue gas waste heat utilization device | |
| CN109971906A (en) | A kind of restoring method of ultralow carbon emission production sponge iron | |
| CN205347482U (en) | System for still crude gas direct reduction is metallurgical to utilize carbide stove tail gas system | |
| CN101264404A (en) | Metallurgical furnace flue gas negative energy dust removing exhaust heat recovering method and special purpose equipment | |
| CN104804478A (en) | Method for preparing carbon black through coal tar chemical chain pyrolysis | |
| CN201901681U (en) | Reduction gas heating device | |
| CN210729159U (en) | Denitration system for grate-rotary kiln pelletizing equipment | |
| CN212533052U (en) | Arc Furnace for Continuous Feeding of Scrap with Double Preheating Channels | |
| CN102994677A (en) | System and method for power generation utilizing waste heat of tail waste gas of blast-furnace hot blast stove | |
| CN100451133C (en) | Method and apparatus for producing directly reduced iron with coke oven gas | |
| CN101928797A (en) | High-blast-temperature energy-saving and emission-reducing combined type preheating system for blast furnace | |
| CN219879938U (en) | An acetylene cracking furnace heated by pulverized coal | |
| CN201347437Y (en) | Device for manufacturing metallic pellet through utilizing direct reduction of oxygen-rich combustion of rotary furnace | |
| CN115820967B (en) | Rotary kiln reduction product cooling method and device | |
| CN209445339U (en) | A kind of energy-saving and environment-friendly exhaust gas electricity generation boiler | |
| CN206607251U (en) | The system that laterite nickel ore pellet is reduced after gas water steam reformation | |
| CN203534218U (en) | Recovery and utilization system for heat of flue gas discharged from normalizing treatment | |
| CN201785422U (en) | High-air-temperature energy-saving emission-reduction combined preheating system of blast furnace | |
| CN202730150U (en) | Power generation system utilizing waste heat of waste gas at tail of blast furnace hot blast stove |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110720 |
|
| CX01 | Expiry of patent term |