CN110628978A - Ou ye furnace roof coal gas cooling waste heat recovery device - Google Patents
Ou ye furnace roof coal gas cooling waste heat recovery device Download PDFInfo
- Publication number
- CN110628978A CN110628978A CN201911060366.7A CN201911060366A CN110628978A CN 110628978 A CN110628978 A CN 110628978A CN 201911060366 A CN201911060366 A CN 201911060366A CN 110628978 A CN110628978 A CN 110628978A
- Authority
- CN
- China
- Prior art keywords
- gas
- pipe
- water heat
- wet return
- steam
- 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.)
- Granted
Links
- 239000003034 coal gas Substances 0.000 title claims abstract description 17
- 238000011084 recovery Methods 0.000 title claims abstract description 9
- 239000002918 waste heat Substances 0.000 title claims abstract description 9
- 238000001816 cooling Methods 0.000 title claims abstract description 7
- 239000007789 gas Substances 0.000 claims abstract description 49
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 41
- 239000000428 dust Substances 0.000 claims abstract description 13
- 238000010438 heat treatment Methods 0.000 claims abstract description 12
- 239000002184 metal Substances 0.000 claims abstract description 10
- 229910052751 metal Inorganic materials 0.000 claims abstract description 10
- 238000007789 sealing Methods 0.000 claims description 7
- 238000005272 metallurgy Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 description 8
- 239000004744 fabric Substances 0.000 description 5
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 4
- 238000001465 metallisation Methods 0.000 description 4
- 241001062472 Stokellia anisodon Species 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 150000003568 thioethers Chemical class 0.000 description 1
- 238000004457 water analysis Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B13/00—Making spongy iron or liquid steel, by direct processes
- C21B13/02—Making spongy iron or liquid steel, by direct processes in shaft furnaces
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
- F27D17/004—Systems for reclaiming waste heat
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
- F27D17/008—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases cleaning gases
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B2100/00—Handling of exhaust gases produced during the manufacture of iron or steel
- C21B2100/40—Gas purification of exhaust gases to be recirculated or used in other metallurgical processes
- C21B2100/44—Removing particles, e.g. by scrubbing, dedusting
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B2100/00—Handling of exhaust gases produced during the manufacture of iron or steel
- C21B2100/60—Process control or energy utilisation in the manufacture of iron or steel
- C21B2100/66—Heat exchange
-
- 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
- Y02P10/25—Process efficiency
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The invention discloses an Ou-metallurgical furnace top gas cooling waste heat recovery device, wherein a gas pipe of Ou-metallurgical furnace is divided into a main pipe and a branch pipe, the tail end of the main pipe is connected with a box body of a bag-type dust collector, the branch pipe is connected with a gas-water heat exchange device, and a gas outlet at the lower end of the gas-water heat exchange device is communicated with the main pipe through the branch pipe, a gate valve and a metal sealed butterfly valve; the steam pipe that gas water heat transfer device lateral wall upper portion was setting up is linked together through electrical control valve and user steam system, sets up middle part inlet tube and middle part wet return on the gas water heat transfer device lateral wall of steam pipe below, and the two is linked together with heating system and is constituteed circulation loop, is setting up a lower part wet return on the wall of gas water heat transfer device lower part both sides respectively, and the lower part wet return of one side is linked together through the pipeline with heating system, the lower part wet return of opposite side with the water tank intercommunication. The invention can reduce the temperature of the coal gas and simultaneously recover the heat in the coal gas with the reduced temperature to generate steam.
Description
Technical Field
The utility model relates to a cooling and cooling waste heat recovery device for high-temperature coal gas generated by dry dedusting of an Ou smelting furnace.
Background
The forebody of the Europe and metallurgy furnace is a COREX furnace, which is the most advanced COREX in the world, is transformed from Bao steel Lujing to eight steel through a series of process technologies, has the technical characteristics of the process, and is called the Europe and metallurgy furnace. In order to realize the functions of energy conservation and environmental protection, the Ou-Meta furnace modifies a COREX top gas filling washer and an adjustable venturi washer into a gravity dust removal and dry dust removal system. The original COREX shaft furnace gas wet dust removal process is replaced by a dry dust removal gas purification process, the shaft furnace is a reduction heat release process for reducing iron oxide by CO, the metallization rate of the shaft furnace is high, and the temperature of the top gas is higher. The Ou metallurgical furnace process is a shaft furnace for reducing iron oxide by using high-temperature coal gas, and the temperature of top coal gas reaches 380-. In order to adapt to the safe and stable operation of the cloth bag system, the flow of top coal gas is controlled by the operation of the vertical furnace, the unit consumption of 1180 and 1200m cultivation/ton mine coal gas is reduced to 900 and 1050m cultivation/ton mine coal gas, and the reduction metallization efficiency of the vertical furnace is indirectly reduced by 5%. The normal working temperature range of the top of the shaft furnace is 150-280 ℃, if the temperature fluctuates under the condition of furnace conditions, the temperature of the coal gas on the top of the shaft furnace can reach 600 ℃ under the abnormal working condition, because the dry dust removal cloth bag can only adapt to the working condition of about 200 ℃, otherwise, the cloth bag is burnt or the service life of the cloth bag dust remover is shortened, and the quality of the coal gas and the normal production of the European and metallurgical furnace are influenced.
Disclosure of Invention
The invention aims to provide a temperature-reducing waste heat recovery device for Ou metallurgical furnace top gas, which can reduce the temperature of the gas and simultaneously recover the heat in the gas with the reduced temperature to generate steam. The device has simple structure, and can meet the requirements of the shaft furnace for increasing the top temperature, increasing the metallization rate and the top gas unit consumption, and reducing the coke ratio and the cost of the Ou-Meta furnace.
The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides an Ou smelt furnace roof coal gas cooling waste heat recovery device, includes Ou smelt stove, heating system, user's steam system and booster pump, oxygen-eliminating device, water tank, sack cleaner, gas water heat transfer device, Ou smelt stove gas pipe divide into trunk pipe and branch pipe, is installing push-pull valve, airtight butterfly valve of metal and bypass control valve on the trunk pipe in proper order, and the trunk pipe end-to-end connection sack cleaner box, airtight butterfly valve exit end of metal connect the branch pipe, the branch pipe is connecting a gas water heat transfer device, gas water heat transfer device lower extreme gas outlet through branch pipe and push-pull valve, airtight butterfly valve of metal with the trunk pipe be linked together; the steam pipe that gas water heat transfer device lateral wall upper portion was setting up is linked together through electrical control valve and user steam system, is setting up middle part inlet tube and middle part wet return on the gas water heat transfer device lateral wall of steam pipe below, middle part inlet tube and middle part wet return with heating system be linked together and be constituted circulation loop, be setting up a lower part wet return on the wall of gas water heat transfer device lower part both sides respectively, the lower part wet return of one side pass through the pipeline with heating system be linked together, the lower part wet return of opposite side loop through high-pressure pump, oxygen-eliminating device, booster pump with the water tank intercommunication.
The device can ensure that the temperature of inlet gas entering the gas bag-type dust remover is controllable between 150 ℃ and 240 ℃, the facility has the capabilities of resisting the abrasion of gas dust, the corrosion of chloride ions and sulfides in the gas and resisting the influence of the fluctuation of the gas temperature, can be safely switched out during maintenance without influencing the normal production of the system, plays a role in regulating the stable operation of the gas system of the Europe and metallurgy furnace, and is favorable for perfecting the iron-making process technology of the Europe and metallurgy furnace.
When the top gas temperature is lower than 120 ℃ in abnormal processes such as shaft furnace emptying and the like, the gas directly enters the cloth bag system along the main trunk pipe without passing through the branch pipe, so that the gas temperature is always above the dew point, and the problem of water analysis is prevented. The invention can prolong the service life of the filter bag of the bag-type dust collector from 1 year to 1.5 years; the service life of the sealing ring of the gas equipment is prolonged to 3 months from 15 days; the control of the top temperature of the shaft furnace is relaxed, the metallization rate is improved by 5 percent, the fuel ratio is reduced by 20kg/tHM, and the safe operation of the system is ensured.
The invention adopts the advanced coal gas waste heat recovery technology, the heat exchange tubes in the air-water heat exchange device adopt light tubes and are arranged along the vertical direction, the coal gas flow rate is more than 20m/s, the ash deposition is avoided, and the invention has certain self-cleaning capability. The steam outlet is provided with an electric regulating valve, and the steam pressure can be regulated according to the requirements of users so as to regulate the temperature of the coal gas at the outlet of the heat exchanger. The design of the internal circulation pipeline is optimized, and the natural circulation of steam under different working conditions is ensured to be smooth. In the gas-water heat exchanger, high-temperature gas flows through a heat exchange pipe, water-steam is arranged outside the heat exchange pipe (in a shell), the high-temperature gas conducts heat through a dividing wall, water in the shell pass of the heat exchange pipe is heated, steam is generated, and the steam naturally circulates into a steam drum through an internal circulation pipeline, so that the purposes of controlling the high-temperature gas within a process requirement range and producing byproduct steam are achieved.
Drawings
The present invention will be described in further detail below with reference to the accompanying drawings.
Fig. 1 is a schematic front view of the present invention.
Detailed Description
A temperature reduction and waste heat recovery device for Ou metallurgical furnace top gas comprises an Ou metallurgical furnace 1, a heating system 9, a user steam system 8, a booster pump 13, a deaerator 10, a water tank 14, a bag-type dust collector 5 and a gas-water heat exchange device 6, wherein the gas-water heat exchange device 6 is in the prior art, gas passages are vertically and uniformly arranged in a long cylindrical shell at intervals, a water-steam chamber is sealed between the gas passages and the gas-water heat exchange device shell, high-temperature gas penetrating through the gas passages heats circulating water in the water-steam chamber, and heated water can be used for heating and boiling water to generate high-temperature steam to enter the user steam system. The gas pipe of the Europe and metallurgy furnace is divided into a main pipe 3 and a branch pipe 15, a gate valve, a metal sealing butterfly valve 2 and a bypass control valve 4 are sequentially installed on the main pipe 3, the end of the main pipe 3 is connected with a box body of a bag-type dust collector 5, the outlet end of the metal sealing butterfly valve 2 is connected with the branch pipe 15, the branch pipe 15 is connected with a gas-water heat exchanger 6, and the gas outlet at the lower end of the gas-water heat exchanger 6 is communicated with the main pipe 3 through the branch pipe, the gate valve and the metal sealing butterfly valve 12; the steam pipe that gas water heat transfer device 6 lateral wall upper portion was setting up is linked together through electrical control valve 7 with user steam system 8, is setting up middle part inlet tube and middle part wet return on the gas water heat transfer device lateral wall of steam pipe below, middle part inlet tube and middle part wet return with heating system 9 be linked together and constitute circulation circuit. Two lower water return pipes are respectively arranged on two side walls of the lower part of the gas-water heat exchange device 6, the lower water return pipe on one side is communicated with the heating system 9 through a pipeline 16, and the lower water return pipe on the other side is communicated with the water tank 14 through a high-pressure pump 11, a deaerator 10 and a booster pump 13 in sequence.
Claims (1)
1. The utility model provides an Ou ye furnace roof coal gas cooling waste heat recovery device, includes Ou ye stove, heating system, user steam system and booster pump, oxygen-eliminating device, water tank, sack cleaner, air water heat transfer device, characterized by: the gas pipe of the Europe and metallurgy furnace is divided into a main pipe and a branch pipe, a gate valve, a metal sealing butterfly valve and a bypass control valve are sequentially installed on the main pipe, the tail end of the main pipe is connected with a bag-type dust collector box body, the outlet end of the metal sealing butterfly valve is connected with the branch pipe, the branch pipe is connected with a gas-water heat exchange device, and the gas outlet at the lower end of the gas-water heat exchange device is communicated with the main pipe through the branch pipe, the gate valve and the metal sealing butterfly valve; the steam pipe that gas water heat transfer device lateral wall upper portion was setting up is linked together through electrical control valve and user steam system, is setting up middle part inlet tube and middle part wet return on the gas water heat transfer device lateral wall of steam pipe below, middle part inlet tube and middle part wet return with heating system be linked together and be constituted circulation loop, be setting up a lower part wet return on the wall of gas water heat transfer device lower part both sides respectively, the lower part wet return of one side pass through the pipeline with heating system be linked together, the lower part wet return of opposite side loop through high-pressure pump, oxygen-eliminating device, booster pump with the water tank intercommunication.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911060366.7A CN110628978B (en) | 2019-11-01 | 2019-11-01 | Europeanism top gas cooling waste heat recovery device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911060366.7A CN110628978B (en) | 2019-11-01 | 2019-11-01 | Europeanism top gas cooling waste heat recovery device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110628978A true CN110628978A (en) | 2019-12-31 |
| CN110628978B CN110628978B (en) | 2024-05-14 |
Family
ID=68978852
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911060366.7A Active CN110628978B (en) | 2019-11-01 | 2019-11-01 | Europeanism top gas cooling waste heat recovery device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110628978B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115921498A (en) * | 2022-10-18 | 2023-04-07 | 新疆八一钢铁股份有限公司 | Method for harmless treatment of hazardous waste desulfurizer by using Europe smelting furnace |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101570807A (en) * | 2009-05-31 | 2009-11-04 | 中冶京诚工程技术有限公司 | Steelmaking converter gas purification and waste heat recovery system |
| CN102851420A (en) * | 2012-09-12 | 2013-01-02 | 首钢总公司 | Steelmaking residual heat step recycling method |
| CN106929626A (en) * | 2017-02-25 | 2017-07-07 | 秦皇岛同力达环保能源股份有限公司 | Coal gas of steel-smelting revolving furnace dedusting waste heat reclaiming process and system |
| CN210886094U (en) * | 2019-11-01 | 2020-06-30 | 新疆八一钢铁股份有限公司 | Ou ye furnace roof coal gas cooling waste heat recovery device |
-
2019
- 2019-11-01 CN CN201911060366.7A patent/CN110628978B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101570807A (en) * | 2009-05-31 | 2009-11-04 | 中冶京诚工程技术有限公司 | Steelmaking converter gas purification and waste heat recovery system |
| CN102851420A (en) * | 2012-09-12 | 2013-01-02 | 首钢总公司 | Steelmaking residual heat step recycling method |
| CN106929626A (en) * | 2017-02-25 | 2017-07-07 | 秦皇岛同力达环保能源股份有限公司 | Coal gas of steel-smelting revolving furnace dedusting waste heat reclaiming process and system |
| CN210886094U (en) * | 2019-11-01 | 2020-06-30 | 新疆八一钢铁股份有限公司 | Ou ye furnace roof coal gas cooling waste heat recovery device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115921498A (en) * | 2022-10-18 | 2023-04-07 | 新疆八一钢铁股份有限公司 | Method for harmless treatment of hazardous waste desulfurizer by using Europe smelting furnace |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110628978B (en) | 2024-05-14 |
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