CN212692543U - Waste heat recovery type sintering cooling arrangement - Google Patents
Waste heat recovery type sintering cooling arrangement Download PDFInfo
- Publication number
- CN212692543U CN212692543U CN202022032240.3U CN202022032240U CN212692543U CN 212692543 U CN212692543 U CN 212692543U CN 202022032240 U CN202022032240 U CN 202022032240U CN 212692543 U CN212692543 U CN 212692543U
- Authority
- CN
- China
- Prior art keywords
- cooling
- sinter
- air
- box
- heat exchanger
- 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.)
- Active
Links
Images
Landscapes
- Manufacture And Refinement Of Metals (AREA)
Abstract
The embodiment of the utility model provides a waste heat recovery type sintering cooling arrangement, include: the device comprises a feeding port for receiving the sinter, a discharging port, a cooling area which is arranged between the feeding port and the discharging port and is used for cooling the sinter, and a sinter containing device which moves from the feeding port side to the discharging port side; when the sinter containing device cools the contained sinter, the sinter containing device moves from the feeding port side to the discharging port side in the cooling area; the cooling zone is provided with m cooling sections which are connected, n cooling sections which are adjacent in sequence and close to the feeding port are high-temperature cooling sections, and p cooling sections which are adjacent in sequence and are positioned behind the high-temperature cooling sections and connected with the high-temperature cooling sections are low-temperature cooling sections; each high-temperature cooling section is provided with a corresponding interface connected with power generation equipment, and the q low-temperature cooling sections are provided with corresponding interfaces connected with heat supply equipment. Through the corresponding interfaces arranged on the cooling sections, a large amount of waste heat of the sintering ore can be utilized, and the pollution to the environment is reduced.
Description
Technical Field
The utility model relates to a cooling arrangement for steel plant sintering machine, concretely relates to waste heat recovery type sintering cooling arrangement.
Background
With the continuous improvement of national economic development and requirements on energy conservation and emission reduction, various large and medium-sized steel plants have new awareness on environmental protection, energy conservation and emission reduction, and the investment on environmental protection and energy conservation is more and more large. At present, the circular cooler of the sintering machine of each steel plant is not improved too much in the aspect of environmental protection, only partially utilizes the waste heat recovery, the sintering machine is the main production equipment of the steel plant, the yield is higher, the environmental protection pressure is higher, and the improvement and the promotion space are greatly improved in the aspect of energy conservation.
In implementing the present invention, the applicant has found that there are at least the following problems in the prior art:
most of the circular coolers of the sintering machines in the prior steel and iron plants adopt heat exchangers or boilers to recover heat in the first and second circular cooling stages for power generation, most of the third and fourth circular cooling stages do not have waste heat recovery, and fans are adopted to pump surrounding air and cool sintered blocks, so that flue gas is discharged on site. The circular coolers of a small part of sintering machines are not used for waste heat and are cooled by ambient air and discharged to the nearby atmosphere. This results in a large waste of waste heat and an unorganized emission of dust into the atmosphere surrounding the sintering machine. Wastes much energy and pollutes the environment.
SUMMERY OF THE UTILITY MODEL
The embodiment of the utility model provides a waste heat recovery type sintering cooling arrangement, through the corresponding interface that each cooling zone set up, a large amount of waste heat of usable sintering deposit reduces the pollution to the environment.
To achieve the above object, an embodiment of the present invention provides a waste heat recovery type sintering cooling apparatus, including: the device comprises a feeding port for receiving the sinter, a discharging port, a cooling area which is arranged between the feeding port and the discharging port and is used for cooling the sinter, and a sinter containing device which moves from the feeding port side to the discharging port side; when the sintered ore holding device cools the sintered ore held therein, the sintered ore holding device moves from the feeding port side to the discharging port side in the cooling zone;
the cooling zone is provided with m cooling sections which are connected, n cooling sections which are adjacent in sequence and close to the feeding port are high-temperature cooling sections, and p cooling sections which are adjacent in sequence and are positioned behind the high-temperature cooling sections and connected with the high-temperature cooling sections are low-temperature cooling sections; wherein m, n, p are positive integers, and p is m-n;
each high-temperature cooling section is provided with a corresponding interface connected with power generation equipment, q low-temperature cooling sections are provided with corresponding interfaces connected with heating equipment and/or refrigerating equipment, and q is less than or equal to p.
Preferably, the cooling zone is provided with 3-7 cooling sections which are connected; the number n of the high-temperature cooling sections is 2, and the number p of the low-temperature cooling sections is 1-5.
Preferably, the cooling zone has 4 cooling sections connected to each other, and the 4 cooling sections are sequentially: a first cooling section, a second cooling section, a third cooling section and a fourth cooling section; the first cooling section and the second cooling section are high-temperature cooling sections, and the third cooling section and the fourth cooling section are low-temperature cooling sections.
Preferably, the cooling section comprises: cooling the first-stage fan, the first heat exchanger, the first hot air pipeline, the first air inlet pipeline, the first lower air box and the first upper air box;
the first lower air box is a box body with an opening at one side, the first lower air box is arranged below the sinter holding device, and the opening side of the first lower air box faces the sinter holding device;
the first upper air box is a box body with an opening at one side, the first upper air box is arranged above the sinter holding device, and the opening side of the first upper air box faces the sinter holding device; when cooling the sintered ore, the wind pressure of the first upper wind box is smaller than the wind pressure of the first lower wind box;
one end of the first air inlet pipeline is connected with the cooling first-stage fan, and the other end of the first air inlet pipeline is connected with the first lower air box;
the first heat exchanger is provided with an interface connected with power generation equipment and is provided with an air inlet and an air outlet;
one end of the first hot air pipeline is connected with an air inlet of the first heat exchanger, and the other end of the first hot air pipeline is connected with the first upper air box;
the air outlet of the first heat exchanger is connected with the cooling first-stage fan;
and the sinter hold device is provided with air-permeable pores.
Preferably, the cooling section comprises: the second-stage cooling fan, the second heat exchanger, the second hot air pipeline, the second air inlet pipeline, the second lower air box and the second upper air box are arranged in the first heat exchanger;
the second lower air box is a box body with an opening at one side, the second lower air box is arranged below the sinter holding device, and the opening side of the second lower air box faces the sinter holding device;
the second upper air box is a box body with an opening at one side, the second upper air box is arranged above the sinter holding device, and the opening side of the second upper air box faces the sinter holding device; when the sintered ore is cooled, the wind pressure of the second upper wind box is smaller than that of the second lower wind box;
one end of the second air inlet pipeline is connected with the cooling secondary fan, and the other end of the second air inlet pipeline is connected with the second lower air box;
the second heat exchanger is provided with an interface connected with power generation equipment and is provided with an air inlet and an air outlet;
one end of the second hot air pipeline is connected with an air inlet of the second heat exchanger, and the other end of the second hot air pipeline is connected with the second upper air box;
an air outlet of the second heat exchanger is connected with the cooling second-stage fan;
and the sinter hold device is provided with air-permeable pores.
Preferably, the cooling three sections include: cooling the three-section fan, the third heat exchanger, the third hot air pipeline, the third air inlet pipeline, the third lower air box and the third upper air box;
the third lower air box is a box body with an opening at one side, the third lower air box is arranged below the sinter holding device, and the opening side of the third lower air box faces the sinter holding device;
the third upper air box is a box body with an opening at one side, the third upper air box is arranged above the sinter holding device, and the opening side of the third upper air box faces the sinter holding device; when the sintered ore is cooled, the wind pressure of the third upper wind box is smaller than the wind pressure of the third lower wind box;
one end of the third air inlet pipeline is connected with the cooling three-section fan; the other end of the third air inlet pipeline is connected with the third lower air box;
the third heat exchanger is provided with an interface for connecting heating equipment and/or refrigerating equipment; the third heat exchanger is provided with an air inlet and an air outlet;
one end of the third hot air pipeline is connected with an air inlet of the third heat exchanger, and the other end of the third hot air pipeline is connected with the third upper air box;
an air outlet of the third heat exchanger is connected with the cooling three-section fan;
and the sinter hold device is provided with air-permeable pores.
Preferably, the cooling four stages include: cooling the four-section fan, the fourth heat exchanger, the fourth hot air pipeline, the fourth air inlet pipeline, the fourth lower air box and the fourth upper air box;
the fourth lower air box is a box body with an opening at one side, the fourth lower air box is arranged below the sinter holding device, and the opening side of the fourth lower air box faces the sinter holding device;
the fourth upper air box is a box body with an opening at one side, the fourth upper air box is arranged above the sinter holding device, and the opening side of the fourth upper air box faces the sinter holding device; when the sintered ore is cooled, the wind pressure of the fourth upper wind box is smaller than that of the fourth lower wind box;
one end of the fourth air inlet pipeline is connected with the four cooling-section fan; the other end of the fourth air inlet pipeline is connected with the fourth lower air box;
the fourth heat exchanger is provided with an interface for connecting heating equipment and/or refrigerating equipment, and is provided with an air inlet and an air outlet;
one end of the fourth hot air pipeline is connected with an air inlet of the fourth heat exchanger, and the other end of the fourth hot air pipeline is connected with the fourth upper air box;
an air outlet of the fourth heat exchanger is connected with the cooling four-section fan;
and the sinter hold device is provided with air-permeable pores.
Preferably, the first heat exchanger is a hot water heat exchanger or a steam boiler.
Preferably, the cooling zone has two opposite sides respectively extending in the moving direction of the sinter hold means;
the waste heat recovery type sintering cooling equipment further comprises a first retaining wall and a second retaining wall, wherein the first retaining wall and the second retaining wall are oppositely arranged outside two sides of the cooling area, and the first retaining wall and the second retaining wall are respectively arranged in an extending mode along the movement direction of the sinter ore containing device;
the top of each of the first retaining wall and the second retaining wall is not lower than the top of the cooling area, and the distance between the top of the first retaining wall and the top of the second retaining wall and the corresponding side of the cooling area is set.
Preferably, the waste heat recovery type sintering and cooling device is a circular cooler, and the sintered ore containing device of the circular cooler is annular in the motion track from the feeding port to the discharging port; or;
the waste heat recovery type sintering and cooling equipment is a belt cooler, and the movement locus of the sinter containing device of the belt cooler from the feeding port to the discharging port is linear.
The technical scheme has the following beneficial effects: the utility model discloses a waste heat recovery type sintering cooling arrangement makes the high temperature sintering piece that sintering machine sintering was accomplished, and the whole temperature that adopts to reduce the sintering piece in the cooling zone has retrieved a large amount of waste heat, has still reduced the pollution to the environment, and it is high, environmental protection performance good to have fine economic benefits relative prior art, and application scope is big, has better social.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a plan view of a waste heat recovery type sintering cooling apparatus according to an embodiment of the present invention;
fig. 2 is a cross-sectional view a-a of fig. 1.
The reference numerals are represented as:
1. a feed port; 2. a discharge opening; 3. cooling for the first time; 4. cooling for the second stage; 5. cooling the third section; 6. cooling for four sections; 7. cooling the first-stage fan; 8. cooling the second-stage fan; 9. cooling the three-section fan; 10. cooling the four-section fan; 12. a first retaining wall; 13. a second retaining wall; 14. sintering the ore; 15. a first lower windbox; 16. a first upper windbox; 17. a heat exchanger; 18. a first air inlet duct; 19. a first hot air duct;
11. and the rotation direction of the circular cooler.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
As shown in fig. 1 to 2, an embodiment of the present invention provides a waste heat recovery type sintering cooling apparatus, including: a feed port 1 for receiving sintered ore 14, a discharge port 2, a cooling zone for cooling sintered ore 14 between the feed port 1 and the discharge port 2, and a sintered ore holding device moving from the feed port 1 side to the discharge port 2 side.
When the sinter containing device cools the contained sinter, the sinter containing device moves from the feeding port 1 side to the discharging port 2 side in the cooling area; the cooling zone is provided with m cooling sections which are connected, n cooling sections which are adjacent in sequence and close to the feeding port 1 are high-temperature cooling sections, and p cooling sections which are adjacent in sequence and are positioned behind the high-temperature cooling sections and connected with the high-temperature cooling sections are low-temperature cooling sections; wherein m, n, p are positive integers, and p is m-n; each high-temperature cooling section is provided with a corresponding interface connected with power generation equipment, q low-temperature cooling sections are provided with corresponding interfaces connected with heating equipment and/or refrigerating equipment, and q is less than or equal to p.
The waste heat recovery type sinter cooling device takes the ring cooling machine in fig. 1 and 2 as an example, the sinter 14 (i.e. high temperature sinter) from the tail part of the sinter enters the sinter containing device in the ring cooling machine through the feeding port 1 of the ring cooling machine, wherein the temperature of the sinter 14 is about 750-800 ℃. According to specific working conditions, the sinter holding device moves (moves in a plane) from the feeding port 1 to the discharging port 2 at a set speed in the cooling area, and the cooling area starts to perform cooling work. The sintering ore containing device is placed in the cooling area, dust generated by sintering ore is prevented from flying into the atmosphere, and the environment-friendly effect is achieved.
The cooling zone is divided into m cooling sections that meet, because the sintering deposit 14 that just got into feed inlet 1 is high temperature, so call to be close to n adjacent cooling sections in proper order of feed inlet 1 are high temperature cooling section, and this n cooling section carries out the heat exchange with sintering deposit 14, and the heat that gets out from sintering deposit 14 is big, the steam that the temperature is high, the pressure is high can be used for generating electricity, gets the steam from high temperature sintering deposit and connects power generation facility's corresponding interface through each high temperature cooling section, make full use of this part of energy.
Because the sintering ore 14 is cooled by the connected high-temperature cooling sections, the temperature of the sintering ore 14 is reduced along with the movement of the sintering ore containing device, and the heat and the temperature exchanged by the medium of the high-temperature cooling sections are also reduced. The temperature of the sintered ore 14 after being cooled by the high-temperature cooling section is between 300 and 350 ℃, and the temperature of the medium for exchanging heat after exchanging heat from the sintered ore 14 is between 350 and 500 ℃.
The p cooling sections immediately after the high-temperature cooling section are low-temperature cooling sections, and at this time, when the sintered ore 14 is in the low-temperature cooling sections, the temperature of the sintered ore 14 itself is greatly reduced compared with that when the sintering of the sintering machine is completed, and the temperature of the medium for exchanging heat from the sintered ore 14 is also low. The temperature of the sintered ore 14 after being cooled by the low-temperature cooling section is between 80 and 120 ℃, and the temperature of the medium for exchanging heat after exchanging heat from the sintered ore 14 is between 90 and 130 ℃. The heat stored by the medium which is obtained by exchanging heat from low temperature is connected with corresponding interfaces of heating equipment and/or refrigerating equipment through each low-temperature cooling section; the specific interface is connected to use the energy carried by the cooling medium for any purpose, so that the energy at the low-temperature region end is fully utilized, and the condition that the energy is not utilized and wasted in the prior art is overcome. In addition, the number of the low-temperature cooling sections provided with the interfaces (the interfaces of the heating equipment and/or the refrigerating equipment) for heat reuse may exist in a low-temperature cooling section connected with the discharge opening 2 according to specific working conditions, for example, the temperature of the medium after the heat is exchanged is very low, so that the situation that the interfaces for heat reuse are not provided exists. The heat of the sinter 14 is fully utilized while avoiding the establishment of a necessary heat reuse interface. When the sinter hold device is moved to the discharge opening 2, the sinter 14 is discharged from the discharge opening 2 and then ironed in the post-process blast furnace by the conveying apparatus.
The utility model discloses a waste heat recovery type sintering cooling arrangement makes the high temperature sintering piece that sintering machine sintering was accomplished, and the whole temperature that adopts to reduce the sintering piece in the cooling zone has retrieved a large amount of waste heat, has still reduced the pollution to the environment, and it is high, environmental protection performance good to have fine economic benefits relative prior art, and application scope is big, has better social.
Preferably, the cooling zone is provided with 3-7 cooling sections which are connected; the number n of the high-temperature cooling sections is 2, and the number p of the low-temperature cooling sections is 1-5. The sintered ore 14 is cooled while moving, a plurality of cooling sections are adopted for layered cooling, and the medium of each cooling section is fully utilized, so that the cooling time is reasonable and reliable.
Preferably, the cooling zone has 4 cooling sections connected to each other, and the 4 cooling sections are sequentially: a first cooling section 3, a second cooling section 4, a third cooling section 5 and a fourth cooling section 6; the cooling first section 3 and the cooling second section 4 are high-temperature cooling sections, and the cooling third section 5 and the cooling fourth section 6 are low-temperature cooling sections. Sintering deposit 14 unloads from the sintering machine afterbody, enters into from feed inlet 1 the utility model discloses an in waste heat recovery type sintering cooling device's the cooling zone, according to the cold quick-witted direction of rotation 11 of ring in proper order, loop through one section of cooling 3, cooling two-stage process 4, cooling three-section 5 and cooling four sections 6, medium in each cooling zone carries out the heat exchange with sintering deposit 14 and gets the heat and come out, and the heat is recycled the interface through the heat. The temperature of the high-temperature sinter 14 is gradually reduced to about 120 ℃, and the high-temperature sinter is discharged from a discharge opening 2 of the circular cooler and then conveyed to a blast furnace for ironmaking in a post-process through conveying equipment.
Preferably, the cooling section 3 comprises: cooling the first-stage fan 7, the first heat exchanger 17, the first hot air pipeline 19, the first air inlet pipeline 18, the first lower air box 15 and the first upper air box 16; the first lower air box 15 is a box body with an opening at one side, the first lower air box 15 is arranged below the sinter holding device, and the opening side of the first lower air box 15 faces the sinter holding device; the first upper air box 16 is a box body with an opening at one side, the first upper air box 16 is arranged above the sinter holding device, and the opening side of the first upper air box 16 faces the sinter holding device; when cooling the sintered ore 14, the wind pressure of the first upper wind box 16 is smaller than the wind pressure of the first lower wind box 15; one end of the first air inlet pipeline 18 is connected with the first cooling section fan 7, and the other end of the first air inlet pipeline 18 is connected with the first lower air box 15; the first heat exchanger 17 is provided with an interface connected with power generation equipment, and the first heat exchanger 17 is provided with an air inlet and an air outlet; one end of the first hot air pipeline 19 is connected with an air inlet of the first heat exchanger 17, and the other end of the first hot air pipeline 19 is connected with the first upper air box 16; and the air outlet of the first heat exchanger 17 is connected with the cooling first-stage fan 7. And the sinter hold device is provided with air-permeable pores; specifically, the bottom of the sinter holding device, the bottom for load bearing, has air permeability.
The high-temperature sintered ore 14 firstly passes through the cooling section 3, and air enters the first lower air box 15 from the first air inlet pipeline 18 under the action of the cooling section fan 7, because the first hot air duct 19 is connected with the first heat exchanger 17, the first heat exchanger 17 is connected with the cooling first segment fan 7, therefore, after the cooling segment fan 7 is started, the air in the first hot air duct 19 is sucked and enters the first lower air box 15 through the first air inlet duct 18, so that the wind pressure of the first upper wind box 16 is smaller than the wind pressure in the first lower wind box 15, the air in the first lower wind box 15 moves upward, the heat of the high-temperature sintering ore 14 is transferred to the air through a sintering ore containing device with air permeability and a sintering ore 14 with granules and blocks, the hot air exchanges heat in a first heat exchanger 17 through a first hot air pipeline 19, and the heat is transferred to a medium in a second heat exchanger 17; the hot air is changed into low-temperature air, the low-temperature air is circulated to cool the sintering ore 14, and the air is continuously circulated until the temperature of the sintering blocks is reduced to a preset temperature range, so that the purpose of cooling is achieved. At this time, the sinter holding device moves to the end of the cooling section 3, and then enters the cooling section 4 to be sequentially cooled. The hot air exchanges heat in the first heat exchanger 17 through the first hot air pipeline 19, and transfers the heat to a medium, such as water, in the first heat exchanger 17 to generate medium-temperature and medium-pressure steam for power generation by a steam turbine.
For the high-temperature sinter cake sintered by the sintering machine, the cooling mode of the cooling section 3 adopts fan circulation waste heat recovery, and all the cooling air adopts external circulation cooling air to reduce the temperature of the sinter, so that basically, the air is not exchanged with external air (atmosphere) or is exchanged in a small amount, so that the dust brought out from the sinter 14 has little or no environmental pollution caused by the external air, and a large amount of waste heat is recovered. Therefore, by recycling a large amount of waste heat and reducing the pollution to the environment, compared with the prior art, the method has the advantages of good economic benefit, good environmental protection performance and wide application range, and has better social benefit, the two cooling sections 4, the three cooling sections 5 and the four cooling sections 6 also adopt the same process to transfer the heat of the sintered ore 14 blocks to media in respective heat exchangers, and the sintered ore 14 achieves the purpose of needing cooling. Because the temperature of the sintered ore 14 is relatively low when the three sections 5 and the four sections 6 are cooled, and the steam pressure temperature generated after the heat exchange medium exchanges heat with the sintered ore 14 is also relatively low, the heat which is usually exchanged is used as heating equipment and/or refrigeration.
Preferably, the cooling section 4 comprises: a second cooling two-stage fan 8, a second heat exchanger, a second hot air pipeline, a second air inlet pipeline, a second lower air box and a second upper air box; the second lower air box is a box body with an opening at one side, the second lower air box is arranged below the sinter holding device, and the opening side of the second lower air box faces the sinter holding device; the second upper air box is a box body with an opening at one side, the second upper air box is arranged above the sinter holding device, and the opening side of the second upper air box faces the sinter holding device; when cooling the sintered ore 14, the wind pressure of the second upper wind box is smaller than the wind pressure of the second lower wind box; one end of the second air inlet pipeline is connected with the cooling secondary fan 8, and the other end of the second air inlet pipeline is connected with the second lower air box; the second heat exchanger is provided with an interface connected with power generation equipment and is provided with an air inlet and an air outlet; one end of the second hot air pipeline is connected with an air inlet of the second heat exchanger, and the other end of the second hot air pipeline is connected with the second upper air box; and the air outlet of the second heat exchanger is connected with the cooling two-stage fan 8. And the sinter hold device is provided with air-permeable pores; specifically, the bottom of the sinter holding device, the bottom for load bearing, has air permeability.
The high-temperature sintering ore 14 enters the cooling second section 4, under the action of a cooling second-section fan 8, air enters a second lower air box from a second air inlet pipeline, the second hot air pipeline is connected with a second heat exchanger, the second heat exchanger is connected with the cooling second-section fan 8, after the cooling second-section fan 8 is started, air in the second hot air pipeline is sucked and enters the second lower air box through the second air inlet pipeline, the air pressure of the second upper air box is smaller than that of the second lower air box, the air in the second lower air box moves upwards and passes through a sintering ore containing device with air permeability and a sintering ore 14 with granular and block shapes, the heat of the high-temperature sintering ore 14 is transferred to the air, and the hot air exchanges heat in the second heat exchanger through the second hot air pipeline to transfer the heat to a medium in the second heat exchanger; the hot air is changed into low-temperature air, the low-temperature air is circulated to cool the sintering ore 14, and the air is continuously circulated until the temperature of the sintering blocks is reduced to a preset temperature range, so that the purpose of cooling is achieved. At the moment, the sinter holding device moves to the tail end of the cooling section 4, and then enters the cooling section 5 to be sequentially cooled. The hot air exchanges heat in the second heat exchanger through the second hot air pipeline, and heat is transferred to media in the second heat exchanger, such as water, and water is generated into medium-temperature and medium-pressure steam for power generation of the steam turbine.
For the high-temperature sinter cake sintered by the sintering machine, the cooling mode of the cooling second section 4 adopts fan circulation waste heat recovery, and all the cooling air adopts external circulation cooling air to reduce the temperature of the sinter, so that basically, the air is not exchanged with the external air (atmosphere) or is exchanged in a small amount, so that the dust brought out from the sinter 14 has little or no environmental pollution caused by the external air, and a large amount of waste heat is recovered. Therefore, by recycling a large amount of waste heat and reducing the pollution to the environment, compared with the prior art, the method has the advantages of good economic benefit, good environmental protection performance, wide application range and better social benefit.
Preferably, said three cooling sections 5 comprise: a third cooling fan 9, a third heat exchanger, a third hot air pipeline, a third air inlet pipeline, a third lower air box and a third upper air box; the third lower air box is a box body with an opening at one side, the third lower air box is arranged below the sinter holding device, and the opening side of the third lower air box faces the sinter holding device; the third upper air box is a box body with an opening at one side, the third upper air box is arranged above the sinter holding device, and the opening side of the third upper air box faces the sinter holding device; when cooling the sintered ore 14, the wind pressure of the third upper wind box is smaller than the wind pressure of the third lower wind box; one end of the third air inlet pipeline is connected with the cooling three-section fan 9; the other end of the third air inlet pipeline is connected with the third lower air box; the third heat exchanger is provided with an interface for connecting heating equipment and/or refrigerating equipment; the third heat exchanger is provided with an air inlet and an air outlet; one end of the third hot air pipeline is connected with an air inlet of the third heat exchanger, and the other end of the third hot air pipeline is connected with the third upper air box; and the air outlet of the third heat exchanger is connected with the cooling three-section fan 9. And the sinter hold device is provided with air-permeable pores; specifically, the bottom of the sinter holding device, the bottom for load bearing, has air permeability.
The high-temperature sintered ore 14 enters the cooling three-section 5, under the action of the cooling three-section fan 9, air enters the third lower air box from the third air inlet pipeline, and because the third hot air pipeline is connected with the third heat exchanger which is connected with the cooling three-section fan 9, after the cooling three-section fan 9 is started, the air in the third hot air pipeline is sucked and enters the third lower air box through the third air inlet pipeline, so that the air pressure of the third upper air box is smaller than that in the third lower air box, the air in the third lower air box moves upwards and passes through the sintered ore containing device with air permeability and the sintered ore 14 with granules and blocks, the heat of the high-temperature sintered ore 14 is transferred to the air, and the hot air exchanges heat in the third heat exchanger through the third hot air pipeline and transfers the heat to a medium in the third heat exchanger; the hot air is changed into low-temperature air, the low-temperature air is circulated to cool the sintering ore 14, and the air is continuously circulated until the temperature of the sintering blocks is reduced to a preset temperature range, so that the purpose of cooling is achieved. At this time, the sinter holding device moves to the end of the cooling four-section 6, and then enters the cooling four-section 6 to be sequentially cooled. The hot air exchanges heat in the third heat exchanger through the third hot air pipeline, heat is transferred to media in the third heat exchanger, such as water, and water generates low-pressure steam or high-temperature circulating hot water, so that the hot air can be used for heating of low-pressure steam users in a plant area or in winter and can be used as a heat source and a cooling tower of an air conditioner in summer.
For the high-temperature sinter cake sintered by the sintering machine, the cooling modes of the three cooling sections 5 all adopt fan circulation waste heat recovery, and all adopt external circulation cooling air to reduce the temperature of the sinter, so that basically, the air is not exchanged with external air (atmosphere) or is exchanged in a small amount, so that the dust brought out from the sinter 14 is in a small amount or is not polluted by the external atmosphere at all, and a large amount of waste heat is recovered. Therefore, by recycling a large amount of waste heat and reducing the pollution to the environment, compared with the prior art, the method has the advantages of good economic benefit, good environmental protection performance, wide application range and better social benefit.
Preferably, said cooling four sections 6 comprise: cooling the four-section fan 10, the fourth heat exchanger, the fourth hot air pipeline, the fourth air inlet pipeline, the fourth lower air box and the fourth upper air box; the fourth lower air box is a box body with an opening at one side, the fourth lower air box is arranged below the sinter holding device, and the opening side of the fourth lower air box faces the sinter holding device; the fourth upper air box is a box body with an opening at one side, the fourth upper air box is arranged above the sinter holding device, and the opening side of the fourth upper air box faces the sinter holding device; when the sintered ore 14 is cooled, the wind pressure of the fourth upper wind box is smaller than the wind pressure of the fourth lower wind box; one end of the fourth air inlet pipeline is connected with the cooling four-section fan 10; the other end of the fourth air inlet pipeline is connected with the fourth lower air box; the fourth heat exchanger is provided with an interface for connecting heating equipment and/or refrigerating equipment, and is provided with an air inlet and an air outlet; one end of the fourth hot air pipeline is connected with an air inlet of the fourth heat exchanger, and the other end of the fourth hot air pipeline is connected with the fourth upper air box; and the air outlet of the fourth heat exchanger is connected with the cooling four-section fan 10. And the sinter hold device is provided with air-permeable pores; specifically, the bottom of the sinter holding device, the bottom for load bearing, has air permeability.
The high-temperature sintered ore 14 enters the fourth cooling section 6, under the action of the fourth cooling section fan 10, air enters the fourth lower air box from the fourth air inlet pipeline, and because the fourth hot air pipeline is connected with the fourth heat exchanger which is connected with the fourth cooling section fan 10, after the fourth cooling section fan 10 is started, the air in the fourth hot air pipeline is sucked and enters the fourth lower air box through the fourth air inlet pipeline, so that the air pressure of the fourth upper air box is smaller than that of the fourth lower air box, the air in the fourth lower air box moves upwards and passes through the sintered ore containing device with air permeability and the sintered ore 14 with grain loading and block shapes, the heat of the high-temperature sintered ore 14 is transferred to the air, and the hot air exchanges heat in the fourth heat exchanger through the fourth hot air pipeline to transfer the heat to a medium in the fourth heat exchanger; the hot air is changed into low-temperature air, the low-temperature air is circulated to cool the sintering ore 14, and the air is continuously circulated until the temperature of the sintering blocks is reduced to a preset temperature range, so that the purpose of cooling is achieved. The sinter hold means is now moved to the end of the cooling section 6, i.e. immediately removed from the discharge opening 2, and after removal is transported by the conveyor to the post-process blast furnace for iron making. The hot air exchanges heat in the fourth heat exchanger through the fourth hot air pipeline, heat is transferred to media in the fourth heat exchanger, such as water, and water generates low-pressure steam or high-temperature circulating hot water, so that the hot air can be used for heating of low-pressure steam users in a plant area or in winter and can be used as a heat source and a cooling tower of an air conditioner in summer.
For the high-temperature sinter cake sintered by the sintering machine, the cooling modes of the four cooling sections 6 all adopt fan circulation waste heat recovery, and all adopt external circulation cooling air to reduce the temperature of the sinter, so that basically, the air is not exchanged with external air (atmosphere) or is exchanged in a small amount, so that the dust brought out from the sinter 14 has little amount or is not polluted by the external atmosphere, a large amount of waste heat is recovered, and the environmental pollution is reduced.
The high-temperature sintering ore 14 at the tail part of the sintering machine enters the annular cooler at about 750-.
Preferably, the first heat exchanger 17 is a steam boiler or a hot water heat exchanger; the second heat exchanger is a steam boiler or a hot water heat exchanger; and/or; the third heat exchanger is a hot water heat exchanger or a steam boiler; and/or; the fourth heat exchanger is a hot water heat exchanger or a steam boiler. Both the hot water heat exchanger and the steam boiler can adopt products mature in the prior art.
Preferably, the cooling zone has two opposite sides respectively extending in the moving direction of the sinter hold means;
the waste heat recovery type sintering cooling equipment further comprises a first retaining wall 12 and a second retaining wall 13, wherein the first retaining wall 12 and the second retaining wall 13 are oppositely arranged outside two sides of the cooling area, and the first retaining wall 12 and the second retaining wall 13 are respectively arranged in an extending mode along the movement direction of the sinter ore containing device; the respective tops of the first retaining wall 12 and the second retaining wall 13 are not lower than the top of the cooling zone and have a set distance with the corresponding side of the cooling zone respectively. The first retaining wall 12 and the second retaining wall 13 can retain particles falling from the sintered ore 14 below the sintered ore containing device and on the bottom surface near the sintered ore containing device, and when wind weather exists, the particles falling below the sintered ore containing device and on the bottom surface near the sintered ore containing device can be prevented from being blown into the atmosphere by the wind through the shielding of the first retaining wall 12 and the second retaining wall 13, so that the environment around the sintering machine is further improved. No smoke and dust are discharged to the outside, the production environment of the sintering machine is changed to clean production of the sintering machine, and the purpose of environmental protection is achieved.
Preferably, the waste heat recovery type sintering and cooling device is a circular cooler, and the sintered ore containing device of the circular cooler is annular in the motion track from the feeding port 1 to the discharging port 2; the cooling area forms a complete closed ring shape, and feed opening 1 and discharge opening 2 are adjacent to be set up, and the sintering deposit holds the device and moves to discharge opening 2 from annular major arc from feed opening 1, holds the device when the sintering deposit and unloads sintering deposit 14 back at discharge opening 2, gets back to feed opening 1 automatically and accepts sintering deposit 14 again and carries out new cooling.
The waste heat recovery type sintering cooling device is a belt cooler, the sinter holding device of the belt cooler is arranged from the feeding port 1 to the discharge port 2, the movement locus is a line, a cooling area forms a non-closed line shape, the feeding port 1 and the discharge port 2 are respectively arranged at two ends of the belt cooler, the sinter holding device moves from the feeding port 1 to the discharge port 2, and when the sinter holding device unloads the sinter 14 at the discharge port 2, the sinter holding device returns to the vicinity of the feeding port 1 to receive the sinter 14 again for new cooling.
The utility model discloses an effective area of sintering machine that waste heat recovery type sintering cooling device's cooling capacity can be supplementary is 100 and gives once more 700 square meters.
To sum up, the utility model discloses a waste heat recovery type sintering cooling arrangement is a special combined type equipment, and through the circulated air supply of the fan of each cooling zone configuration, the heat with the sintering deposit generates hot water or steam through the corresponding heat exchanger of each cooling zone behind the heat reuse interface transmission feedwater, for example when the cooling zone is four cooling zones, is in the high temperature cooling zone promptly: the temperature of the sintered ore in the first cooling section and the second cooling section is very high, and after heat exchange of circulating air, medium-temperature and medium-pressure steam can be generated through hot water and used for power generation of a steam turbine. The temperature of the sintered ore in the low-temperature cooling section, namely the cooling three section and the cooling four section is lower, the circulating air heat exchange can heat water to generate low-pressure steam or high-temperature circulating hot water, and the sintered ore can be used for heating low-pressure steam users in a plant area or in winter, can be used as a power heat source of an air conditioner in summer, and has various functions after waste heat recovery. In addition, when no user (steam pressure user or winter heating, heat source of air conditioner in summer and cooling tower) is available in the low-level heat source generated in the three cooling sections and the four cooling sections, the cooling tower is adopted for heat dissipation, so that normal production of the circular cooler of the sintering machine can be ensured, and the continuous production of the subsequent process of the steel plant cannot be influenced.
In the foregoing detailed description, various features are grouped together in a single embodiment for the purpose of streamlining the disclosure. This method of disclosure is not to be interpreted as reflecting an intention that the claimed embodiments of the subject matter require more features than are expressly recited in each claim. Rather, as the following claims reflect, the invention lies in less than all features of a single disclosed embodiment. Thus, the following claims are hereby expressly incorporated into the detailed description, with each claim standing on its own as a separate preferred embodiment of the invention.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. To those skilled in the art; various modifications to these embodiments will be readily apparent, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the disclosure. Thus, the present disclosure is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
What has been described above includes examples of one or more embodiments. It is, of course, not possible to describe every conceivable combination of components or methodologies for purposes of describing the aforementioned embodiments, but one of ordinary skill in the art may recognize that many further combinations and permutations of various embodiments are possible. Accordingly, the embodiments described herein are intended to embrace all such alterations, modifications and variations that fall within the scope of the appended claims. Furthermore, to the extent that the term "includes" is used in either the detailed description or the claims, such term is intended to be inclusive in a manner similar to the term "comprising" as "comprising" is interpreted when employed as a transitional word in a claim. Furthermore, any use of the term "or" in the specification of the claims is intended to mean a "non-exclusive or".
The above-mentioned embodiments, further detailed description of the objects, technical solutions and advantages of the present invention, it should be understood that the above description is only the embodiments of the present invention, and is not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. An exhaust heat recovery type sintering cooling apparatus, characterized by comprising: a feed opening (1) for receiving sinter (14), a discharge opening (2), a cooling zone between the feed opening (1) and the discharge opening (2) for cooling sinter (14), and a sinter containment device which moves from the feed opening (1) side to the discharge opening (2) side; when the sinter containing device cools the sinter contained therein, the sinter containing device moves from the feeding port (1) side to the discharging port (2) side in the cooling area;
the cooling area is provided with m cooling sections which are connected, n cooling sections which are adjacent in sequence and close to the feeding port (1) are high-temperature cooling sections, and p cooling sections which are adjacent in sequence and are positioned behind the high-temperature cooling sections and connected with the high-temperature cooling sections are low-temperature cooling sections; wherein m, n, p are positive integers, and p is m-n;
each high-temperature cooling section is provided with a corresponding interface connected with power generation equipment, q low-temperature cooling sections are provided with corresponding interfaces connected with heating equipment and/or refrigerating equipment, and q is less than or equal to p.
2. The waste heat recovery type sintering cooling equipment of claim 1, wherein the cooling zone has 3-7 cooling sections connected; the number n of the high-temperature cooling sections is 2, and the number p of the low-temperature cooling sections is 1-5.
3. The waste heat recovery type sintering cooling device of claim 1, wherein the cooling zone has 4 cooling sections connected, and the 4 cooling sections are sequentially: a cooling first section (3), a cooling second section (4), a cooling third section (5) and a cooling fourth section (6); the cooling first section (3) and the cooling second section (4) are high-temperature cooling sections, and the cooling third section (5) and the cooling fourth section (6) are low-temperature cooling sections.
4. The waste heat recovery type sinter cooling device of claim 3, wherein the cooling section (3) comprises: cooling a first-stage fan (7), a first heat exchanger (17), a first hot air pipeline (19), a first air inlet pipeline (18), a first lower air box (15) and a first upper air box (16);
the first lower air box (15) is a box body with an opening at one side, the first lower air box (15) is arranged below the sinter holding device, and the opening side of the first lower air box (15) faces the sinter holding device;
the first upper air box (16) is a box body with an opening at one side, the first upper air box (16) is arranged above the sinter holding device, and the opening side of the first upper air box (16) faces the sinter holding device; when cooling the sintered ore (14), the wind pressure of the first upper wind box (16) is smaller than the wind pressure of the first lower wind box (15);
one end of the first air inlet pipeline (18) is connected with the first cooling fan (7), and the other end of the first air inlet pipeline (18) is connected with the first lower air box (15);
the first heat exchanger (17) is provided with an interface connected with power generation equipment, and the first heat exchanger (17) is provided with an air inlet and an air outlet;
one end of the first hot air pipeline (19) is connected with an air inlet of the first heat exchanger (17), and the other end of the first hot air pipeline (19) is connected with the first upper air box (16);
the air outlet of the first heat exchanger (17) is connected with the cooling first-stage fan (7);
and the sinter hold device is provided with air-permeable pores.
5. The waste heat recovery type sinter cooling device of claim 3, wherein the cooling section (4) comprises: a second cooling secondary fan (8), a second heat exchanger, a second hot air pipeline, a second air inlet pipeline, a second lower air box and a second upper air box;
the second lower air box is a box body with an opening at one side, the second lower air box is arranged below the sinter holding device, and the opening side of the second lower air box faces the sinter holding device;
the second upper air box is a box body with an opening at one side, the second upper air box is arranged above the sinter holding device, and the opening side of the second upper air box faces the sinter holding device; when cooling the sintered ore (14), the wind pressure of the second upper wind box is smaller than the wind pressure of the second lower wind box;
one end of the second air inlet pipeline is connected with the cooling secondary fan (8), and the other end of the second air inlet pipeline is connected with the second lower air box;
the second heat exchanger is provided with an interface connected with power generation equipment and is provided with an air inlet and an air outlet;
one end of the second hot air pipeline is connected with an air inlet of the second heat exchanger, and the other end of the second hot air pipeline is connected with the second upper air box;
the air outlet of the second heat exchanger is connected with the cooling secondary fan (8);
and the sinter hold device is provided with air-permeable pores.
6. The waste heat recovery type sinter cooling device of claim 3, wherein the cooling three sections (5) include: a third cooling fan (9), a third heat exchanger, a third hot air pipeline, a third air inlet pipeline, a third lower air box and a third upper air box;
the third lower air box is a box body with an opening at one side, the third lower air box is arranged below the sinter holding device, and the opening side of the third lower air box faces the sinter holding device;
the third upper air box is a box body with an opening at one side, the third upper air box is arranged above the sinter holding device, and the opening side of the third upper air box faces the sinter holding device; when cooling the sintered ore (14), the wind pressure of the third upper wind box is smaller than the wind pressure of the third lower wind box;
one end of the third air inlet pipeline is connected with the cooling three-section fan (9); the other end of the third air inlet pipeline is connected with the third lower air box;
the third heat exchanger is provided with an interface for connecting heating equipment and/or refrigerating equipment; the third heat exchanger is provided with an air inlet and an air outlet;
one end of the third hot air pipeline is connected with an air inlet of the third heat exchanger, and the other end of the third hot air pipeline is connected with the third upper air box;
an air outlet of the third heat exchanger is connected with the cooling three-section fan (9);
and the sinter hold device is provided with air-permeable pores.
7. The waste heat recovery type sinter cooling device of claim 3, wherein the cooling four stages (6) include: cooling a four-section fan (10), a fourth heat exchanger, a fourth hot air pipeline, a fourth air inlet pipeline, a fourth lower air box and a fourth upper air box;
the fourth lower air box is a box body with an opening at one side, the fourth lower air box is arranged below the sinter holding device, and the opening side of the fourth lower air box faces the sinter holding device;
the fourth upper air box is a box body with an opening at one side, the fourth upper air box is arranged above the sinter holding device, and the opening side of the fourth upper air box faces the sinter holding device; when cooling the sintered ore (14), the wind pressure of the fourth upper wind box is smaller than the wind pressure of the fourth lower wind box;
one end of the fourth air inlet pipeline is connected with the cooling four-section fan (10); the other end of the fourth air inlet pipeline is connected with the fourth lower air box;
the fourth heat exchanger is provided with an interface for connecting heating equipment and/or refrigerating equipment, and is provided with an air inlet and an air outlet;
one end of the fourth hot air pipeline is connected with an air inlet of the fourth heat exchanger, and the other end of the fourth hot air pipeline is connected with the fourth upper air box;
an air outlet of the fourth heat exchanger is connected with the cooling four-section fan (10);
and the sinter hold device is provided with air-permeable pores.
8. The waste heat recovery type sinter cooling device of claim 4, wherein the first heat exchanger (17) is a steam boiler or a hot water heat exchanger.
9. The waste heat recovery type sinter cooling device of claim 1, wherein the cooling zone has opposite sides that extend in a direction in which the sinter-holding means moves;
the waste heat recovery type sintering cooling equipment further comprises a first retaining wall (12) and a second retaining wall (13), wherein the first retaining wall (12) and the second retaining wall (13) are oppositely arranged outside two sides of the cooling area, and the first retaining wall (12) and the second retaining wall (13) are respectively arranged in an extending mode along the movement direction of the sinter ore containing device;
the tops of the first retaining wall (12) and the second retaining wall (13) are not lower than the top of the cooling area, and the first retaining wall and the second retaining wall have set distances with the corresponding sides of the cooling area respectively.
10. The waste heat recovery type sintering cooling apparatus according to claim 1, characterized in that: the waste heat recovery type sintering and cooling device is a circular cooler, and the movement locus of the sinter holding device of the circular cooler from the feeding port (1) to the discharging port (2) is annular; or;
the waste heat recovery type sintering and cooling equipment is a belt cooler, and the movement locus of the sinter containing device of the belt cooler from the feeding port (1) to the discharging port (2) is linear.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022032240.3U CN212692543U (en) | 2020-09-16 | 2020-09-16 | Waste heat recovery type sintering cooling arrangement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022032240.3U CN212692543U (en) | 2020-09-16 | 2020-09-16 | Waste heat recovery type sintering cooling arrangement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212692543U true CN212692543U (en) | 2021-03-12 |
Family
ID=74885425
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022032240.3U Active CN212692543U (en) | 2020-09-16 | 2020-09-16 | Waste heat recovery type sintering cooling arrangement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212692543U (en) |
-
2020
- 2020-09-16 CN CN202022032240.3U patent/CN212692543U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101592443B (en) | Waste heat internal and external circulation comprehensive recycling method and hot air flow system of pellet production equipment | |
| CN101915507A (en) | Method and device for power generation by utilizing steam generated from waste heat of steel mill in cascade mode | |
| CN108278903A (en) | A kind of sintering waste heat step takes hot systems | |
| CN104913652A (en) | Shaft furnace pellet clinker waste heat recycling method and device | |
| CN103615908B (en) | Combined waste heat recycling system for stepping-type flat-burning sintering machine | |
| CN212692543U (en) | Waste heat recovery type sintering cooling arrangement | |
| CN112985093A (en) | Efficient power generation technology for eliminating unorganized emission of flue gas of sintering circular cooler | |
| CN211626048U (en) | Vertical cold waste heat recovery and utilization system for sinter | |
| CN108680040B (en) | System and method for efficiently distributing and utilizing sensible heat of sinter | |
| CN112050651A (en) | Waste heat recovery type sintering cooling arrangement | |
| CN204630404U (en) | A kind of device utilizing sintering low temperature waste heat to cool circulation water of blast furnace | |
| CN102003887B (en) | Sintering waste heat utilization system | |
| CN101294773A (en) | Hot wind complete circulation type waste heat recovery utilization process and equipment of sintering cooler | |
| CN202813542U (en) | Waste heat extracting and heat supply stepped heating system in power plant | |
| CN202001071U (en) | Steel plate rolling workshop heating furnace low-grade flue gas organic Rankine cycle waste heat generating system | |
| CN204372948U (en) | A kind of afterheat of slags recycle device | |
| CN107940985B (en) | Grate type transitional cooling device | |
| CN112082394A (en) | Waste heat power generation system for cooling sintered ore grate cooler | |
| CN208620383U (en) | Residual heat of air compressor recycling equipment | |
| CN105318735A (en) | Device and method used for cooling blast furnace circulating water with sintering low-temperature exhaust heat | |
| CN201368447Y (en) | High-temperature phase-change heat accumulating type dry-quenched steel afterheat power generation device in steel production flows | |
| CN111811287A (en) | Ternary battery anode material sintering kiln waste heat recovery system | |
| CN218443396U (en) | Smoke-discharging low-temperature waste heat power generation device of waste heat boiler of sintering cooler | |
| CN212299978U (en) | Waste heat power generation system for cooling sintered ore grate cooler | |
| CN201053686Y (en) | Bucket elevator with cooling function |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20210721 Granted publication date: 20210312 |
|
| PP01 | Preservation of patent right | ||
| PD01 | Discharge of preservation of patent |
Date of cancellation: 20210825 Granted publication date: 20210312 |
|
| PD01 | Discharge of preservation of patent | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220507 Address after: 102488 m846, floor 1, building 1, No. 73, Changhong West Road, Xilu street, Fangshan District, Beijing (cluster registration) Patentee after: China coal Weikun (Beijing) energy saving and Environmental Protection Technology Co.,Ltd. Address before: 102200 room 509, block a, No.5 Chaoqian Road, science and Technology Park, Changping District, Beijing Patentee before: BEIJING IVYQUEN ENERGY SAVING TECHNOLOGIES LTD. |
|
| TR01 | Transfer of patent right |