CN215261226U - Sintering flue gas waste heat recovery device - Google Patents
Sintering flue gas waste heat recovery device Download PDFInfo
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- CN215261226U CN215261226U CN202121264919.3U CN202121264919U CN215261226U CN 215261226 U CN215261226 U CN 215261226U CN 202121264919 U CN202121264919 U CN 202121264919U CN 215261226 U CN215261226 U CN 215261226U
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- flue gas
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/30—Technologies for a more efficient combustion or heat usage
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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
- Y02P10/25—Process efficiency
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- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The utility model relates to a flue gas waste heat recovery technical field discloses a sintering flue gas waste heat recovery device, including the fritting furnace, be connected with the flue gas pipeline on the fritting furnace, the other end of flue gas pipeline is connected to the heat transfer case, the baffle is installed in turn from top to bottom to the heat transfer case, and the baffle separates into the flue gas passageway of "S" shape with the heat transfer incasement chamber, and the other end of heat transfer case is connected with the connecting tube, and the other end of connecting tube is connected to the drip washing tower, install the thick liquids pipeline in the flue gas passageway, the thick liquids pipeline is coil form coiling in the flue gas passageway, and the left end of thick liquids pipeline stretches out and is connected to thick liquids pond, right-hand member from the heat transfer roof portion and stretches out and be connected to the rod mill discharge gate from the heat transfer bottom of the case portion, the thick liquids pipeline is close to the one end of rod mill discharge gate and installs the high-pressure pump. The utility model aims to utilize the high temperature flue gas of fritting furnace to heat the sintering body stick abrasive material and boil, reduce the heat energy extravagant.
Description
Technical Field
The utility model relates to a flue gas waste heat recovery technical field especially relates to a sintering flue gas waste heat recovery device.
Background
In the tungsten-molybdenum recovery process, the mineral containing tungsten and molybdenum is required to be mixed with soda and a sintering aid and then sintered, a large amount of high-temperature flue gas is generated in the sintering process, the temperature is generally between 150 ℃ and 200 ℃, and the waste of heat energy is caused by directly discharging the dust-removed and purified gas; the sintered body is needed to be wet-ground into slurry in a rod mill and then leached, in order to ensure that sodium tungsten molybdate in the slurry is fully dissolved, the slurry after rod milling needs to be heated and boiled for 1.5-2 hours, and a traditional heating mode needs to consume larger energy.
Therefore, it is necessary to provide a waste heat recovery device using the waste heat of the sintering flue gas for heating the boiling rod mill slurry.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to solve above-mentioned problem, provide a sintering flue gas waste heat recovery device for the high temperature flue gas that utilizes the fritting furnace heats the sintering body stick abrasive material and boils, reduces the heat energy extravagant, the energy saving.
The purpose of the utility model is realized through the following technical scheme:
the utility model provides a sintering flue gas waste heat recovery device, includes the fritting furnace, is connected with the flue gas pipeline on the fritting furnace, and the other end of flue gas pipeline is connected to the heat transfer case, the baffle is installed from top to bottom in turn to the heat transfer case, and the baffle separates into the flue gas passageway of "S" shape with the heat transfer incasement chamber, and the other end of heat transfer case is connected with the connecting tube, and the other end of connecting tube is connected to the drip washing tower, install the thick liquids pipeline in the flue gas passageway, the thick liquids pipeline is coiled in the flue gas passageway, and the left end of thick liquids pipeline stretches out from the heat transfer roof portion and is connected to thick liquids pond, right-hand member stretch out from the heat transfer bottom portion and be connected to the rod mill discharge gate, the one end that the thick liquids pipeline is close to the rod mill discharge gate installs the high-pressure pump.
According to the sintering flue gas waste heat recovery device, high-temperature flue gas discharged from the sintering furnace is subjected to heat exchange with slurry in the slurry pipeline when passing through the S-shaped flue gas channel and then enters the leaching tower for desulfurization and purification, so that the waste of heat energy is avoided, the fuel or electric energy consumption in the slurry heating and boiling process is reduced, and the energy is saved.
Further, the thick liquids pond is located the flue gas pipeline top, the flue gas pipeline cross-section is the rectangle and its cross-sectional length is not less than thick liquids pond width, and its effect lies in: the slurry tank is continuously heated and boiled by using high-temperature flue gas discharged from the sintering furnace, so that heat energy is further recovered, and energy consumption is reduced.
Further, the part of the slurry pipeline between the adjacent partition plates is also in a coil pipe shape, and the function of the slurry pipeline is as follows: the heat exchange time of the slurry and the high-temperature flue gas is prolonged, the contact area is increased, and the heat exchange effect is improved.
Technical scheme more than combining, compare with prior art, the utility model provides a sintering flue gas waste heat recovery device, its beneficial effect is:
the utility model provides a sintering flue gas waste heat recovery device can utilize sintering furnace exhaust high temperature flue gas to preheat stick mill thick liquids and continuously heat to the thick liquids pond to make full use of the heat energy of sintering flue gas, avoided the heat energy extravagant, flue gas passageway and the winding thick liquids pipeline of coil pipe formula through "S" have prolonged heat transfer time, have increased heat transfer area, thereby promoted the heat transfer effect, further reduced the heat energy extravagant, practiced thrift the energy.
Drawings
Fig. 1 is a schematic structural diagram of a sintering flue gas waste heat recovery device of the present invention.
Fig. 2 is a cross-sectional view of the heat exchange box of the present invention.
The method comprises the following steps of 1-sintering furnace, 2-flue gas pipeline, 3-slurry pool, 4-rod mill, 5-heat exchange box, 51-partition plate, 52-flue gas channel, 6-slurry pipeline, 7-high pressure pump, 8-connecting pipeline and 9-leaching tower.
Detailed Description
For a detailed description of the technical features and the objects and effects achieved by the present invention, further description is made below with reference to the accompanying drawings:
as shown in fig. 1, a sintering flue gas waste heat recovery device comprises a sintering furnace 1, wherein a flue gas pipeline 2 is connected to the sintering furnace 1, the other end of the flue gas pipeline 2 is connected to a heat exchange box 5, partition plates 51 are alternately installed on the heat exchange box 5 from top to bottom, the partition plates 51 partition the inner cavity of the heat exchange box 5 into an S-shaped flue gas channel 52, the other end of the heat exchange box 5 is connected with a connecting pipeline 8, the other end of the connecting pipeline 8 is connected to a leaching tower 9, a slurry pipeline 6 is installed in the flue gas channel 52, the slurry pipeline 6 is coiled in the flue gas channel 52, the left end of the slurry pipeline 6 extends out of the top of the heat exchange box 5 and is connected to a slurry pool 3, the right end of the slurry pipeline 6 extends out of the bottom of the heat exchange box 5 and is connected to a discharge port of a rod mill 4, and a high-pressure pump 7 is installed at one end of the slurry pipeline 6 close to the discharge port of the rod mill 4.
Preferably, the slurry pool 3 is positioned above the flue gas pipeline 2, the section of the flue gas pipeline 2 is rectangular, and the length of the section of the flue gas pipeline is not less than the width of the slurry pool 3.
Preferably, the slurry conduit 6 is also coiled in the portion between adjacent partitions 51.
The utility model provides a sintering flue gas waste heat recovery device, its concrete implementation process as follows:
the high-temperature flue gas discharged from the sintering furnace 1 is continuously discharged from the flue gas pipeline 2, continuously exchanges heat with the slurry pool 3 in the discharging process, so that the slurry pool 3 is continuously heated, the flue gas after exchanging heat with the slurry pool 3 enters the heat exchange box 5 and moves rightwards along the S-shaped flue gas channel 52, exchanges heat with the slurry in the slurry pipeline 6 in the process, further recovers heat, preheats and warms up the slurry, and the flue gas after exchanging heat with the slurry in the slurry pipeline 6 enters the leaching tower 9 from the connecting pipeline 8 to be desulfurized and dedusted and then is discharged.
Slurry obtained after wet grinding of a sintered body by a rod mill 4 is pressurized by a high-pressure pump 7 and then enters a heat exchange box 5 from a slurry pipeline 6 to be preheated and heated, the coil pipe type structure prolongs heat exchange time and increases heat exchange area, so that the slurry can be sufficiently heated before reaching a slurry pool 3, and can be continuously subjected to heat exchange with high-temperature flue gas discharged from a sintering furnace 1 again after entering the slurry pool 3, the heat of the high-temperature flue gas can be fully utilized for boiling, the waste of the heat energy of the high-temperature flue gas is avoided, and meanwhile, the energy is saved.
The present invention is not limited to the above embodiments, and those skilled in the art can make various modifications, improvements and substitutions without departing from the concept of the present invention, which all belong to the protection scope of the present invention, and the protection scope of the present invention is subject to the appended claims.
Claims (3)
1. The utility model provides a sintering flue gas waste heat recovery device which characterized in that: including the fritting furnace, be connected with the flue gas pipeline on the fritting furnace, the other end of flue gas pipeline is connected to the heat transfer case, the baffle is installed in turn from top to bottom to the heat transfer case, and the baffle separates into the flue gas passageway of "S" shape with the heat transfer incasement chamber, and the other end of heat transfer case is connected with the connecting tube, and the other end of connecting tube is connected to the drip washing tower, install the thick liquids pipeline in the flue gas passageway, the thick liquids pipeline is coiled in the flue gas passageway in the coiled pipe formula, and the left end of thick liquids pipeline stretches out from the heat transfer incasement top and is connected to thick liquids pond, right-hand member stretch out from the heat transfer incasement bottom and be connected to the rod mill discharge gate, the one end that the thick liquids pipeline is close to the rod mill discharge gate installs the high-pressure pump.
2. The device for recovering the waste heat of the sintering flue gas as claimed in claim 1, wherein: the slurry tank is positioned above the flue gas pipeline, the section of the flue gas pipeline is rectangular, and the length of the section of the flue gas pipeline is not less than the width of the slurry tank.
3. The device for recovering the waste heat of the sintering flue gas as claimed in claim 1, wherein: the part of the slurry pipeline between the adjacent partition plates is also in a coil shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121264919.3U CN215261226U (en) | 2021-06-07 | 2021-06-07 | Sintering flue gas waste heat recovery device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121264919.3U CN215261226U (en) | 2021-06-07 | 2021-06-07 | Sintering flue gas waste heat recovery device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215261226U true CN215261226U (en) | 2021-12-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121264919.3U Active CN215261226U (en) | 2021-06-07 | 2021-06-07 | Sintering flue gas waste heat recovery device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215261226U (en) |
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2021
- 2021-06-07 CN CN202121264919.3U patent/CN215261226U/en active Active
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