CN104328237B - Circulation water of blast furnace heat-exchanger rig and method circulating water afterheat comprehensively utilized with it - Google Patents
Circulation water of blast furnace heat-exchanger rig and method circulating water afterheat comprehensively utilized with it Download PDFInfo
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- CN104328237B CN104328237B CN201410652609.7A CN201410652609A CN104328237B CN 104328237 B CN104328237 B CN 104328237B CN 201410652609 A CN201410652609 A CN 201410652609A CN 104328237 B CN104328237 B CN 104328237B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 504
- 230000004087 circulation Effects 0.000 title claims abstract description 155
- 238000000034 method Methods 0.000 title claims abstract description 47
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 192
- 239000000498 cooling water Substances 0.000 claims abstract description 37
- 230000017531 blood circulation Effects 0.000 claims description 72
- 239000008234 soft water Substances 0.000 claims description 61
- 238000000746 purification Methods 0.000 claims description 58
- 238000001816 cooling Methods 0.000 claims description 34
- 238000005516 engineering process Methods 0.000 claims description 32
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 claims description 23
- 239000002893 slag Substances 0.000 claims description 20
- 230000006835 compression Effects 0.000 claims description 16
- 238000007906 compression Methods 0.000 claims description 16
- 238000005276 aerator Methods 0.000 claims description 13
- 238000002955 isolation Methods 0.000 claims description 8
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 239000010865 sewage Substances 0.000 abstract description 3
- 238000005265 energy consumption Methods 0.000 abstract description 2
- 238000010438 heat treatment Methods 0.000 description 11
- 238000010586 diagram Methods 0.000 description 7
- 230000005855 radiation Effects 0.000 description 5
- 238000003723 Smelting Methods 0.000 description 3
- 230000006866 deterioration Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- PMVSDNDAUGGCCE-TYYBGVCCSA-L Ferrous fumarate Chemical compound [Fe+2].[O-]C(=O)\C=C\C([O-])=O PMVSDNDAUGGCCE-TYYBGVCCSA-L 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000001717 pathogenic effect Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
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Abstract
A kind of circulation water of blast furnace heat-exchanger rig, including heat exchange tube body and 1～3 separate water recirculator；The water inlet reducer pipe of described water recirculator, water out reducer pipe are separately mounted to outside the tube wall of heat exchange tube body left and right, fin pipe group is arranged on heat exchange tube body inner chamber, its water inlet passes right tube wall and communicates with water inlet reducer pipe, outlet passes left tube wall and communicates with water out reducer pipe, and the cavity between fin Guan Zuyu heat exchange tube body tube wall constitutes heat exchange air passage；Air intake reducer pipe and air outlet slit reducer pipe are separately mounted to the two ends of heat exchange tube body and communicate with the air duct of heat exchange tube body；With circulation water of blast furnace heat-exchanger rig, the method that circulating water afterheat comprehensively utilizes is included the hot-air system and the circulation that access blast furnace, makes Cryogenic air and high-temperature cooling water carry out heat exchange in heat-exchanger rig；Above-mentioned residual heat integrative Application way can reduce energy consumption and sewage discharge, reduces equipment investment and consumption, reduces production cost, steady production.
Description
Technical field
The present invention relates to a kind of for the wind energy of blast furnace ironmaking process, heat energy heat-exchanger rig and method, particularly relate to a kind of circulation water of blast furnace heat-exchanger rig and method circulating water afterheat comprehensively utilized with it.
Background technology
At present, known blast furnace iron-making process, including hot-air system and water cooling system, hot-air system is to be blasted air pressurized in air stove by aerator to be blown in blast furnace after heating, participate in smelting process, or before aerator, add systems for moisture removal, by the hydrogenesis made in air of lowering the temperature, air stove is blasted again through aerator after removing the portion of water in air, it is blown into blast furnace after heated and participates in smelting process, owing to being all relatively Cryogenic air entering the air before heating furnace, therefore in the process that air is heated by air stove, to consume mass energy just can bring up to required hot blast temperature.
Water cooling system includes soft water blood circulation (or pure water closed-cycle system), water purification blood circulation, muddy water blood circulation:
In soft water closed circulating system, soft water completes after to the blast furnace technology equipment cooling that need to cool down, soft water self-temperature raises, completed after the heat radiation of soft water secondary hardening by heat exchanger by water purification, soft water recirculates and uses, water purification is back to purification water pool, elevator pump again deliver to heat exchanger and carry out radiating and cooling, recycles；
In water purification blood circulation, by clean circulating water pump, water purification is pipelined to the blast furnace technology equipment needing cooling down, it is back to hot-tub after completing heat exchange, by elevator pump, water purification is promoted to cooling tower and carries out radiating and cooling, again from flowing back to water purifying tank, water purification is pressed and delivered to the blast furnace technology equipment that need to cool down by clean circulating water pump again, circulates with this；
In muddy water blood circulation, turbid circulating water pump returns to sedimentation tank after completing slag making before water pressurization is delivered to blast furnace, is delivered to cooling tower by elevator pump and completes cooling, to muddy water pond, then pressurizeed by turbid circulating water pump after filtration, purification, reciprocation cycle.
In the above process, there is the problem that
1. hot-air system needs heating, and water cooling system needs heat radiation, but due to each system independent operating, secondary cooling water, net circulating water and turbid circulating water complete radiating and cooling by cooling tower, substantial amounts of heat energy is discharged into the atmosphere in vain, it is impossible to be utilized effectively；
2. water is consumed in a large number in radiation processes in the way of water vapour；
3. need to consume a large amount of driven by power and promote water pump and cooling fan；
4. owing to water constantly consumes, with air close contact time simultaneously by cooling tower heat radiation, it is easy to cause water quality deterioration, need to regularly add medicament, periodic exhaustion sewage, not only increase production cost, and cause environmental pollution.
Summary of the invention
The technical problem to be solved in the present invention is: for the problems referred to above, it is provided that a kind of circulation water of blast furnace heat-exchanger rig and method circulating water afterheat comprehensively utilized with it, to overcome the above-mentioned deficiency existing for prior art.
The present invention adopts the technical scheme that: a kind of method that circulating water afterheat is comprehensively utilized by circulation water of blast furnace heat-exchanger rig, described circulation water of blast furnace heat-exchanger rig, including heat exchanger shell and fin pipe group, described heat exchanger shell inner chamber installs 1～3 group of fin pipe group, cavity between fin Guan Zuyu heat exchanger shell constitutes the air duct of heat exchange, and described heat exchanger shell two ends connect the air intake reducer pipe and air outlet slit reducer pipe that communicate with air duct respectively；
Described heat exchanger shell left and right sides connects the water inlet reducer pipe and water out reducer pipe that communicate with corresponding fin pipe group respectively, that is: the entrance point of each group of fin pipe group passes heat exchanger shell sidewall and a water inlet reducer pipe communicates, and the port of export of fin pipe group passes another sidewall of heat exchanger shell and a water out reducer pipe communicates；
Described water inlet reducer pipe and water out reducer pipe are horn-like reducer pipe, water inlet reducer pipe horn mouth is connected with heat exchanger shell side pipe wall, the osculum of reducer pipe is water inlet, and water out reducer pipe horn mouth is connected with heat exchanger shell opposite side tube wall, and the osculum of reducer pipe is water out；
Described air intake reducer pipe and air outlet slit reducer pipe are that horn-like reducer pipe, air intake reducer pipe horn mouth are connected with heat exchanger shell end face, and the osculum of reducer pipe is air intake；Air outlet slit reducer pipe horn mouth is connected with heat exchanger shell other end, and the osculum of reducer pipe is air outlet slit.
Described water inlet reducer pipe, water out reducer pipe and air intake reducer pipe and the horn-like reducer pipe of air outlet slit reducer pipe, its shape of cross section or be circular or for square.
The method that circulating water afterheat comprehensively utilizes is by above-mentioned circulation water of blast furnace heat-exchanger rig by a kind of circulation water of blast furnace heat-exchanger rig, access hot-air system and the circulation of blast furnace, make the big flow Cryogenic air not heated before entrance air stove and the high-temperature cooling water from the blast furnace technology equipment point backflow that need to cool down, heat exchange is carried out in circulation water of blast furnace heat-exchanger rig, Cryogenic air is made to be heated up, high-temperature cooling water is lowered the temperature, thus reaching the purpose that residual heat integrative utilizes；Specifically comprise the following steps that
Step 1: circulation water of blast furnace heat-exchanger rig is accessed the hot-air system of blast furnace:
Being connected with cold blast main by the air intake reducer pipe of circulation water of blast furnace heat-exchanger rig, the air outlet slit reducer pipe of circulation water of blast furnace heat-exchanger rig connects with air stove, and air stove outlet pipe connects with blast furnace air outlet；
Step 2: circulation water of blast furnace heat-exchanger rig is accessed the circulation of blast furnace:
Any one system connectivity by the water inlet reducer pipe of circulation water of blast furnace heat-exchanger rig and water out reducer pipe and water purification blood circulation, soft water blood circulation or muddy water blood circulation, or any two system connectivity by two groups of water inlet reducer pipes of circulation water of blast furnace heat-exchanger rig and water out reducer pipe with water purification blood circulation, soft water blood circulation or muddy water blood circulation, or three groups of water inlet reducer pipes are connected with water purification blood circulation, soft water blood circulation and muddy water blood circulation respectively with water out reducer pipe: simultaneously
(1) circulation water of blast furnace heat-exchanger rig and water purification blood circulation connection method: the water out reducer pipe of circulation water of blast furnace heat-exchanger rig connects with the water inlet in water purification pond, the outlet in water purification pond connects with the water inlet end of clean circulating water pump 7, the cooling water pipe of the blast furnace technology equipment that the connection of clean circulating water pump 7 water side need to cool down, is connected with the water inlet reducer pipe of circulation water of blast furnace heat-exchanger rig by water return pipeline；
(2) circulation water of blast furnace heat-exchanger rig and soft water blood circulation connection method: the water out reducer pipe of circulation water of blast furnace heat-exchanger rig connects with the water inlet end of soft water water pump, the cooling water pipe of the blast furnace technology equipment that the connection of soft water water pump water outlet end need to cool down, is connected with the water inlet reducer pipe of circulation water of blast furnace heat-exchanger rig by water return pipeline；
(3) circulation water of blast furnace heat-exchanger rig and muddy water blood circulation connection method: the water out reducer pipe of circulation water of blast furnace heat-exchanger rig connects with the inlet channel of slag making system, pulp water is connected with muddy water pond by return pipe after separating, muddy water pond outlet connects with the water inlet end of turbid circulating water pump, and turbid circulating water pumps water one end and connects with the water inlet reducer pipe of circulation water of blast furnace heat-exchanger rig；
Step 3: start aerator and slowed down through air intake reducer pipe by cold blast main by air, after entering the air duct heat exchange of circulation water of blast furnace heat-exchanger rig, is accelerated then through air outlet slit reducer pipe, air is delivered to air stove, is then sent through blast furnace 4；
Step 4:
(1) start the clean circulating water pump of water purification blood circulation and water purification is added after the cooling water pipe being sent to the blast furnace technology equipment that need to cool down completes heat exchange, slowed down by water inlet reducer pipe and enter circulation water of blast furnace heat-exchanger rig, after carrying out heat exchange cooling with the compression air of relatively low temperature, after flowing back to water purification pond after being accelerated by the water out reducer pipe of circulation water of blast furnace heat-exchanger rig, then through clean circulating water pump again pressurized circulation；
Or (2) start the soft water water pump of soft water blood circulation and are added by soft water after the cooling water pipe being sent to the blast furnace technology equipment that need to cool down completes heat exchange, slow down through water inlet reducer pipe and enter circulation water of blast furnace heat-exchanger rig, after carrying out heat exchange cooling with the compression air of relatively low temperature, soft water water pump is flowed back to, pressurized circulation again after being accelerated by the water out reducer pipe of circulation water of blast furnace heat-exchanger rig；
Or (3) start the turbid circulating water pump of muddy water blood circulation, muddy water is after stokehold completes slag making, inflow muddy water pond after pulp water isolation of purified is carried out through slag making system, pressurizeed by turbid circulating water pump, enter circulation water of blast furnace heat-exchanger rig by water inlet reducer pipe, after carrying out heat exchange cooling with the compression air of relatively low temperature, after being accelerated by the water out reducer pipe of circulation water of blast furnace heat-exchanger rig, flow back to slag making system, after pulp water isolation of purified, flow into muddy water pond, recirculate.
Owing to adopting technique scheme, compared with prior art, the circulation water of blast furnace heat-exchanger rig of the present invention and by its method to circulating water afterheat comprehensive utilization, have the advantages that
1. the circulation water of blast furnace heat-exchanger rig of the present invention utilizes the secondary cooling water of water cooling system, net circulating water and turbid circulating water waste heat that the relatively Cryogenic air before entering heating furnace is preheated, and can greatly reduce the energy consumption of air stove heating:
For 2500m3 blast furnace, the air stove blow rate required is 5300m3/min, and after preheating, pathogenic wind-warm improves 5 DEG C, 330 days meters of year operation, can save standard coal 918 tons/year；
Backwater is lowered the temperature by the big flow relative low temperature air utilizing aerator, does not consume electric energy completely, and the blast furnace total of 2500m3 can be saved power consumption and be reached 2000kw, year, economize on electricity was more than 13,000,000 kwh, one iron and steel enterprise producing 10000000 tons per year, year economize on electricity reaches 65,000,000 kwh, rolls over 21775 tons of standard coals；
2. the circulation water of blast furnace heat-exchanger rig adopting the present invention and method circulating water afterheat comprehensively utilized with it, the evaporation air cooler (or plate type heat exchanger) in former technological process can be cancelled, and clean circulating water, turbid circulating water elevator pump and cooling tower, simplify the technological process of water circulation system；Owing to eliminating cooling tower, avoid distributing water vapour to air in radiation processes, water resources consumption can be reduced to greatest extent on the one hand, the blast furnace of 2500m3 can be economized on water more than 300,000 tons every year, avoid water and air contact to greatest extent on the other hand, alleviate water quality deterioration, reduce sewage discharge, alleviate environmental pollution, also can reduce the cost because adding Water warfare and stable pharmaceutical simultaneously；
3. the circulation water of blast furnace heat-exchanger rig of the present invention is equivalent to a buffering air storage chamber, can alleviate when wind is changed in air stove due to the air quantity fluctuation impact on blast furnace, be conducive to steady production；
4. owing to cancelling the evaporation air cooler in former technological process, and clean circulating water, turbid circulating water elevator pump and cooling tower, not only can reduce equipment investment and construction investment and equipment consumption, reduce production cost, land seizure can be reduced simultaneously.
Below in conjunction with drawings and Examples, the collecting and distributing control energy-saving water-saving device of industrial circulating water of the present invention and the technical characteristic of control method thereof are further described.
Accompanying drawing explanation
Fig. 1～Fig. 6 is the circulation water of blast furnace heat-exchanger rig structural representation of the present invention:
Fig. 1 front view, Fig. 2 is the left view of Fig. 1, and Fig. 3 is the A-A sectional view of Fig. 1, and Fig. 4 is the C-C sectional view of Fig. 1, and Fig. 5 is the B-B sectional view of Fig. 2, and Fig. 6 is three-dimensional effect diagram, and Fig. 7 is fin pipe group structural representation；
Fig. 8～Figure 10: for the circulation water of blast furnace heat-exchanger rig structural representation of embodiment two:
Fig. 8 front view, Fig. 9 is the left view of Fig. 8, and Figure 10 is the top view of Fig. 8；
Figure 11～Figure 15: circulation water of blast furnace residual heat integrative is utilized pipeline connection diagram with circulation water of blast furnace heat-exchanger rig:
Figure 11 is the pipeline connection diagram (having three groups of fin pipe groups to connect with water purification blood circulation, soft water blood circulation and muddy water blood circulation respectively) of embodiment three；
Figure 12 is the pipeline connection diagram (only two groups of fin pipe groups, connect with water purification blood circulation and soft water blood circulation respectively) of embodiment four；
Figure 13 is the pipeline connection diagram (only one group of fin pipe group, connects with soft water blood circulation) of embodiment five；
Figure 14 is the pipeline connection diagram (only one group of fin pipe group, connects with water purification blood circulation) of embodiment six；
Figure 15 is the pipeline connection diagram (only one group of fin pipe group, connects with muddy water blood circulation) of embodiment seven；
In figure:
1 aerator, 11 cold blast main, 2 circulation water of blast furnace heat-exchanger rigs, 21 air intake reducer pipes, 22 heat exchanger shells, 23 air ducts, 24 air outlet slit reducer pipes, 25 fin pipe groups, K11, K21, K31 water inlet reducer pipe, K12, K22, K32 water out reducer pipe, 3 air stovees, 4 blast furnaces, the blast furnace technology equipment that 41,42 need to cool down, 5 slag making systems, 6 soft water water pumps, 7 clean circulating water pumps, 8 water purification ponds, 9 turbid circulating water pumps, 10 muddy water ponds.
Detailed description of the invention
Embodiment one
A kind of circulation water of blast furnace heat-exchanger rig, including heat exchanger shell 22 and fin pipe group 25,
Described heat exchanger shell inner chamber installs 3 groups of fin pipe groups, cavity between fin pipe group 25 and heat exchanger shell 22 constitutes the air duct 23 of heat exchange, and described heat exchanger shell two ends connect the air intake reducer pipe 21 and air outlet slit reducer pipe 25 that communicate with air duct respectively；
Described heat exchanger shell left and right sides connects the water inlet reducer pipe and water out reducer pipe that communicate with corresponding fin pipe group respectively, it may be assumed that
The entrance point of first group of fin pipe group passes heat exchanger shell sidewall and communicates with water inlet reducer pipe K11, and the port of export of fin pipe group passes another sidewall of heat exchanger shell and communicates with water out reducer pipe K12；
The entrance point of second group of fin pipe group passes heat exchanger shell sidewall and communicates with water inlet reducer pipe K21, and the port of export of fin pipe group passes another sidewall of heat exchanger shell and communicates with water out reducer pipe K22；
The entrance point of the 3rd group of fin pipe group passes heat exchanger shell sidewall and communicates with water inlet reducer pipe K31, and the port of export of fin pipe group passes another sidewall of heat exchanger shell and communicates with water out reducer pipe K32；
Above-mentioned water inlet reducer pipe and water out reducer pipe are horn-like reducer pipe, water inlet reducer pipe horn mouth is connected with heat exchanger shell side pipe wall, the osculum of reducer pipe is water inlet, and water out reducer pipe horn mouth is connected with heat exchanger shell opposite side tube wall, and the osculum of reducer pipe is water out；
Described air intake reducer pipe 21 and air outlet slit reducer pipe 24 are that horn-like reducer pipe, air intake reducer pipe horn mouth are connected with heat exchanger shell end face, and the osculum of reducer pipe is air intake；Air outlet slit reducer pipe horn mouth is connected with heat exchanger shell other end, and the osculum of reducer pipe is air outlet slit.
Described water inlet reducer pipe, water out reducer pipe and air intake reducer pipe and the horn-like reducer pipe of air outlet slit reducer pipe, its shape of cross section are square.
Embodiment two
A kind of circulation water of blast furnace heat-exchanger rig, including heat exchanger shell 22 and fin pipe group 25, its basic structure is identical with embodiment one, institute the difference is that, the shape of cross section of described horn-like reducer pipe be circle.
Embodiment three
A kind of method that circulating water afterheat is comprehensively utilized by circulation water of blast furnace heat-exchanger rig, by above-mentioned circulation water of blast furnace heat-exchanger rig, access hot-air system and the water purification blood circulation of circulation, soft water blood circulation and the muddy water blood circulation (such as accompanying drawing 11) of blast furnace, make the big flow Cryogenic air before not heating and the high-temperature cooling water from the blast furnace technology equipment point backflow that need to cool down, heat exchange is carried out in heat-exchanger rig, Cryogenic air is made to be heated up, high-temperature cooling water is made to be lowered the temperature, thus reaching the purpose that residual heat integrative utilizes, specifically comprise the following steps that
Step 1: circulation water of blast furnace heat-exchanger rig is accessed the hot-air system of blast furnace:
Namely the air intake reducer pipe 21 of circulation water of blast furnace heat-exchanger rig connects with cold blast main 11, and the air outlet slit reducer pipe 24 of circulation water of blast furnace heat-exchanger rig connects with air stove 3, and air stove outlet pipe connects with blast furnace 4 air outlet；
Step 2: circulation water of blast furnace heat-exchanger rig is accessed the circulation of blast furnace:
Three groups of fin pipe groups of circulation water of blast furnace heat-exchanger rig are connected with soft water blood circulation, water purification blood circulation and muddy water blood circulation respectively simultaneously, it may be assumed that
(1) circulation water of blast furnace heat-exchanger rig and water purification blood circulation connection method: the water out reducer pipe K12 of first group of fin pipe group of circulation water of blast furnace heat-exchanger rig connects with the water inlet in water purification pond 8, the outlet in water purification pond 8 connects with the water inlet end of clean circulating water pump 7, the cooling water pipe of the blast furnace technology equipment 41 that the connection of clean circulating water pump 7 water side need to cool down, is connected with the water inlet reducer pipe K11 of fin pipe group by water return pipeline；
(2) circulation water of blast furnace heat-exchanger rig and soft water blood circulation connection method: the water inlet end with soft water water pump 6 of second group of fin pipe group of circulation water of blast furnace heat-exchanger rig connects, the cooling water pipe of blast furnace technology equipment 41 that the connection of soft water water pump 6 water side need to cool down, by water return pipeline and fin pipe group water inlet reducer pipe K21 connect；
(3) circulation water of blast furnace heat-exchanger rig and muddy water blood circulation connection method: the water out reducer pipe K32 of the 3rd group of fin pipe group of circulation water of blast furnace heat-exchanger rig connects with the inlet channel of slag making system 5, pulp water is connected with muddy water pond 10 by return pipe after separating, muddy water pond 10 outlet connects with the water inlet end of turbid circulating water pump 9, and turbid circulating water pump 9 water outlet one end connects with the water inlet reducer pipe K31 of fin pipe group；
Step 3: start aerator 1 and air is slowed down through air intake reducer pipe 21 by cold blast main 11, after entering air duct 23 heat exchange of circulation water of blast furnace heat-exchanger rig, accelerate then through air outlet slit reducer pipe 24, air is delivered to air stove 3, be then sent through blast furnace 4；
Step 4:
(1) start the clean circulating water pump 7 of water purification blood circulation and water purification is added after the cooling water pipe being sent to the blast furnace technology equipment 41 that need to cool down completes heat exchange, slowed down by water inlet reducer pipe K11 and enter first group of fin pipe group, after carrying out heat exchange cooling with the compression air of relatively low temperature, after flowing back to water purification pond 8 after being accelerated by the water out reducer pipe K12 of first group of fin pipe group, then through clean circulating water pump 7 again pressurized circulation；
(2) start the soft water water pump 6 of soft water blood circulation and soft water is added after the cooling water pipe being sent to the blast furnace technology equipment 42 that need to cool down completes heat exchange, the water inlet reducer pipe K21 passed through slows down and enters second group of fin pipe group, after carrying out heat exchange cooling with the compression air of relatively low temperature, soft water water pump 6 is flowed back to, pressurized circulation again after being accelerated by the water out reducer pipe K22 of second group of fin pipe group；
(3) the turbid circulating water pump 9 of muddy water blood circulation is started, muddy water is after stokehold completes slag making, inflow muddy water pond 10 after pulp water isolation of purified is carried out through slag making system, pressurizeed by turbid circulating water pump 9, enter the 3rd group of fin pipe group by water inlet reducer pipe K31, after carrying out heat exchange cooling with the compression air of relatively low temperature, after being accelerated by the water out reducer pipe K32 of the 3rd group of fin pipe group, flow back to slag making system 5, after pulp water isolation of purified, flow into muddy water pond 10, recirculate.
Embodiment four
A kind of method that circulating water afterheat is comprehensively utilized by circulation water of blast furnace heat-exchanger rig, by above-mentioned circulation water of blast furnace heat-exchanger rig, access the hot-air system of blast furnace and the water purification blood circulation of circulation and soft water blood circulation (such as accompanying drawing 12), make the big flow Cryogenic air before not heating and the high-temperature cooling water from the blast furnace technology equipment point backflow that need to cool down, heat exchange is carried out in heat-exchanger rig, Cryogenic air is made to be heated up, high-temperature cooling water is made to be lowered the temperature, thus reaching the purpose that residual heat integrative utilizes, specifically comprise the following steps that
Step 1: circulation water of blast furnace heat-exchanger rig is accessed the hot-air system of blast furnace:
Namely the air intake reducer pipe 21 of circulation water of blast furnace heat-exchanger rig connects with cold blast main 11, and the air outlet slit reducer pipe 24 of circulation water of blast furnace heat-exchanger rig connects with air stove 3, and air stove outlet pipe connects with blast furnace 4 air outlet；
Step 2: circulation water of blast furnace heat-exchanger rig is accessed the circulation of blast furnace:
Two groups of fin pipe groups of circulation water of blast furnace heat-exchanger rig are connected with soft water blood circulation and water purification blood circulation respectively simultaneously, it may be assumed that
(1) circulation water of blast furnace heat-exchanger rig and water purification blood circulation connection method: the water out reducer pipe K12 of first group of fin pipe group of circulation water of blast furnace heat-exchanger rig connects with the water inlet in water purification pond 8, the outlet in water purification pond 8 connects with the water inlet end of clean circulating water pump 7, the cooling water pipe of the blast furnace technology equipment 41 that the connection of clean circulating water pump 7 water side need to cool down, is connected with the water inlet reducer pipe K11 of fin pipe group by water return pipeline；
(2) circulation water of blast furnace heat-exchanger rig and soft water blood circulation connection method: the water inlet end with soft water water pump 6 of second group of fin pipe group of circulation water of blast furnace heat-exchanger rig connects, the cooling water pipe of blast furnace technology equipment 41 that the connection of soft water water pump 6 water side need to cool down, by water return pipeline and fin pipe group water inlet reducer pipe K21 connect；
Step 3: start aerator 1 and air is slowed down through air intake reducer pipe 21 by cold blast main 11, after entering air duct 23 heat exchange of circulation water of blast furnace heat-exchanger rig, accelerate then through air outlet slit reducer pipe 24, air is delivered to air stove 3, be then sent through blast furnace 4；
Step 4:
(1) start the clean circulating water pump 7 of water purification blood circulation and water purification is added after the cooling water pipe being sent to the blast furnace technology equipment 41 that need to cool down completes heat exchange, slowed down by water inlet reducer pipe K11 and enter first group of fin pipe group, after carrying out heat exchange cooling with the compression air of relatively low temperature, after flowing back to water purification pond 8 after being accelerated by the water out reducer pipe K12 of first group of fin pipe group, then through clean circulating water pump 7 again pressurized circulation；
(2) start the soft water water pump 6 of soft water blood circulation and soft water is added after the cooling water pipe being sent to the blast furnace technology equipment 42 that need to cool down completes heat exchange, the water inlet reducer pipe K21 passed through slows down and enters second group of fin pipe group, after carrying out heat exchange cooling with the compression air of relatively low temperature, soft water water pump 6 is flowed back to, pressurized circulation again after being accelerated by the water out reducer pipe K22 of second group of fin pipe group.
Embodiment five
A kind of method that circulating water afterheat is comprehensively utilized by circulation water of blast furnace heat-exchanger rig, by above-mentioned circulation water of blast furnace heat-exchanger rig, access the hot-air system of blast furnace and the soft water blood circulation (such as accompanying drawing 13) of circulation, make the big flow Cryogenic air before not heating and the high-temperature cooling water from the blast furnace technology equipment point backflow that need to cool down, heat exchange is carried out in heat-exchanger rig, Cryogenic air is made to be heated up, high-temperature cooling water is made to be lowered the temperature, thus reaching the purpose that residual heat integrative utilizes, specifically comprise the following steps that
Step 1: circulation water of blast furnace heat-exchanger rig is accessed the hot-air system of blast furnace:
Namely the air intake reducer pipe 21 of circulation water of blast furnace heat-exchanger rig connects with cold blast main 11, and the air outlet slit reducer pipe 24 of circulation water of blast furnace heat-exchanger rig connects with air stove 3, and air stove outlet pipe connects with blast furnace 4 air outlet；
Step 2: circulation water of blast furnace heat-exchanger rig is accessed the soft water blood circulation of circulation water of blast furnace system, it may be assumed that
The water inlet end with soft water water pump 6 of the fin pipe group of circulation water of blast furnace heat-exchanger rig is connected, the cooling water pipe of blast furnace technology equipment 41 that the connection of soft water water pump 6 water side need to cool down, by water return pipeline and fin pipe group water inlet reducer pipe K21 connect；
Step 3: start aerator 1 and air is slowed down through air intake reducer pipe 21 by cold blast main 11, after air duct 23 heat exchange of circulation water of blast furnace heat-exchanger rig, accelerate then through air outlet slit reducer pipe 24, air is delivered to air stove 3, be then sent through blast furnace 4；
Step 4:
Start the soft water water pump 6 of soft water blood circulation and soft water is added after the cooling water pipe being sent to the blast furnace technology equipment 42 that need to cool down completes heat exchange, the water inlet reducer pipe K21 passed through slows down and enters second group of fin pipe group, after carrying out heat exchange cooling with the compression air of relatively low temperature, soft water water pump 6 is flowed back to, pressurized circulation again after being accelerated by the water out reducer pipe K22 of second group of fin pipe group.
Embodiment six
A kind of method that circulating water afterheat is comprehensively utilized by circulation water of blast furnace heat-exchanger rig, by above-mentioned circulation water of blast furnace heat-exchanger rig, access the hot-air system of blast furnace and the water purification blood circulation (such as accompanying drawing 14) of circulation, make the big flow Cryogenic air before not heating and the high-temperature cooling water from the blast furnace technology equipment point backflow that need to cool down, heat exchange is carried out in heat-exchanger rig, Cryogenic air is made to be heated up, high-temperature cooling water is made to be lowered the temperature, thus reaching the purpose that residual heat integrative utilizes, specifically comprise the following steps that
Step 1: circulation water of blast furnace heat-exchanger rig is accessed the hot-air system of blast furnace:
Namely the air intake reducer pipe 21 of circulation water of blast furnace heat-exchanger rig connects with cold blast main 11, and the air outlet slit reducer pipe 24 of circulation water of blast furnace heat-exchanger rig connects with air stove 3, and air stove outlet pipe connects with blast furnace 4 air outlet；
Step 2: circulation water of blast furnace heat-exchanger rig is accessed the water purification blood circulation of circulation water of blast furnace system, it may be assumed that
The water out reducer pipe K12 of the fin pipe group of circulation water of blast furnace heat-exchanger rig is connected with the water inlet in water purification pond 8, the outlet in water purification pond 8 connects with the water inlet end of clean circulating water pump 7, the cooling water pipe of the blast furnace technology equipment 41 that the connection of clean circulating water pump 7 water side need to cool down, is connected with the water inlet reducer pipe K11 of fin pipe group by water return pipeline；
Step 3: start aerator 1 and air is slowed down through air intake reducer pipe 21 by cold blast main 11, after air duct 23 heat exchange of circulation water of blast furnace heat-exchanger rig, accelerate then through air outlet slit reducer pipe 24, air is delivered to air stove 3, be then sent through blast furnace 4；
Step 4:
Start the clean circulating water pump 7 of water purification blood circulation and water purification is added after the cooling water pipe being sent to the blast furnace technology equipment 41 that need to cool down completes heat exchange, slowed down by water inlet reducer pipe K11 and enter first group of fin pipe group, after carrying out heat exchange cooling with the compression air of relatively low temperature, after flowing back to water purification pond 8 after being accelerated by the water out reducer pipe K12 of first group of fin pipe group, then through clean circulating water pump 7 again pressurized circulation.
Embodiment seven
A kind of method that circulating water afterheat is comprehensively utilized by circulation water of blast furnace heat-exchanger rig, by above-mentioned circulation water of blast furnace heat-exchanger rig, access the hot-air system of blast furnace and the muddy water blood circulation (such as accompanying drawing 15) of circulation, make the big flow Cryogenic air before not heating and the high-temperature cooling water from the blast furnace technology equipment point backflow that need to cool down, heat exchange is carried out in heat-exchanger rig, Cryogenic air is made to be heated up, high-temperature cooling water is made to be lowered the temperature, thus reaching the purpose that residual heat integrative utilizes, specifically comprise the following steps that
Step 1: circulation water of blast furnace heat-exchanger rig is accessed the hot-air system of blast furnace:
Namely the air intake reducer pipe 21 of circulation water of blast furnace heat-exchanger rig connects with cold blast main 11, and the air outlet slit reducer pipe 24 of circulation water of blast furnace heat-exchanger rig connects with air stove 3, and air stove outlet pipe connects with blast furnace 4 air outlet；
Step 2: circulation water of blast furnace heat-exchanger rig is accessed the muddy water blood circulation of circulation water of blast furnace system, it may be assumed that
The water out reducer pipe K32 of the fin pipe group of circulation water of blast furnace heat-exchanger rig is connected with the inlet channel of slag making system 5, pulp water is connected with muddy water pond 10 by return pipe after separating, muddy water pond 10 outlet connects with the water inlet end of turbid circulating water pump 9, and turbid circulating water pump 9 water outlet one end connects with the water inlet reducer pipe K31 of fin pipe group；
Step 3: start aerator 1 and air is slowed down through air intake reducer pipe 21 by cold blast main 11, after air duct 23 heat exchange of circulation water of blast furnace heat-exchanger rig, accelerate then through air outlet slit reducer pipe 24, air is delivered to air stove 3, be then sent through blast furnace 4；
Step 4: start the turbid circulating water pump 9 of muddy water blood circulation, muddy water is after stokehold completes slag making, inflow muddy water pond 10 after pulp water isolation of purified is carried out through slag making system, pressurizeed by turbid circulating water pump 9, enter the 3rd group of fin pipe group by water inlet reducer pipe K31, after carrying out heat exchange cooling with the compression air of relatively low temperature, after being accelerated by the water out reducer pipe K32 of the 3rd group of fin pipe group, flow back to slag making system 5, after pulp water isolation of purified, flow into muddy water pond 10, recirculate.
Operation principle
1. air flow process: as shown in Figure 1, Cryogenic air is first pressurizeed through aerator 1 and is entered circulation water of blast furnace heat-exchanger rig 2 through cold blast main 11 air intake reducer pipe 21, air duct 23, heat exchange is carried out with the fin pipe group of the circulation water of blast furnace heat-exchanger rig being positioned among air duct, compression air is made to be heated up, compression air after intensification accelerates through air outlet slit reducer pipe 24, flows to air stove 3, enters blast furnace 4 and participate in smelting after heating；
2. Water flow-path:
(1) water purification flow path: after water purification is pressurizeed by clean circulating water pump 7, deliver to each process equipment point 41 of blast furnace 4, after completing heat exchange, temperature raises, flow to water inlet reducer pipe K11 by water return pipeline and enter back into first group of fin pipe group of circulation water of blast furnace heat-exchanger rig (entering fin pipe group through water inlet reducer pipe K11), heat exchange is completed with the Cryogenic air in air duct, water purification after cooling accelerates to flow back to water purification pond 8 by the water out reducer pipe K12 of fin pipe group, then by clean circulating water pump 7 pressurized circulation；
(2) soft water flow process: after soft water is pressurizeed by soft water water pump 6, deliver to each process equipment 42 that blast furnace 4 need to cool down, after completing heat exchange, water temperature raises, it flow to second group of fin pipe group of circulation water of blast furnace heat-exchanger rig (entering fin pipe group through water inlet reducer pipe K21) by back of pipeline, heat exchange is completed with the Cryogenic air in air duct, soft water after cooling accelerates to flow out by the water out reducer pipe K22 of fin pipe group, returns to soft water water pump 106 pressurized circulation；
(3) muddy water flow process: water is pressurizeed by turbid circulating water pump 9, slow down through water inlet reducer pipe K31, enter the 3rd group of fin pipe group of circulation water of blast furnace heat-exchanger rig, heat exchange is completed with the Cryogenic air in air duct, being lowered the temperature by high-temperature water, the water out reducer pipe K32 again through fin pipe group accelerates, and completes slag making and after pulp water separates to slag making system 5, return to muddy water pond 9, by turbid circulating water pump 10 again pressurized circulation.
Claims (1)
1. the method that circulating water afterheat is comprehensively utilized by a circulation water of blast furnace heat-exchanger rig, described circulation water of blast furnace heat-exchanger rig includes heat exchanger shell (22) and fin pipe group (25), described heat exchanger shell inner chamber installs 1～3 group of fin pipe group, cavity between fin Guan Zuyu heat exchanger shell constitutes the air duct (23) of heat exchange, and described heat exchanger shell two ends connect the air intake reducer pipe (21) and air outlet slit reducer pipe (24) that communicate with air duct respectively；
Described heat exchanger shell left and right sides connects the water inlet reducer pipe and water out reducer pipe that communicate with corresponding fin pipe group respectively, that is: the entrance point of each group of fin pipe group passes heat exchanger shell sidewall and a water inlet reducer pipe communicates, and the port of export of fin pipe group passes another sidewall of heat exchanger shell and a water out reducer pipe communicates；
Described water inlet reducer pipe and water out reducer pipe are horn-like reducer pipe, water inlet reducer pipe horn mouth is connected with heat exchanger shell side pipe wall, the osculum of reducer pipe is water inlet, and water out reducer pipe horn mouth is connected with heat exchanger shell opposite side tube wall, and the osculum of reducer pipe is water out；
Described air intake reducer pipe and air outlet slit reducer pipe are that horn-like reducer pipe, air intake reducer pipe horn mouth are connected with heat exchanger shell end face, and the osculum of reducer pipe is air intake；Air outlet slit reducer pipe horn mouth is connected with heat exchanger shell other end, and the osculum of reducer pipe is air outlet slit；
Described water inlet reducer pipe, water out reducer pipe and air intake reducer pipe and the horn-like reducer pipe of air outlet slit reducer pipe, its shape of cross section or be circular or for square；
The method that circulating water afterheat comprehensively utilizes is by above-mentioned circulation water of blast furnace heat-exchanger rig by a kind of circulation water of blast furnace heat-exchanger rig, access hot-air system and the circulation of blast furnace, make the big flow Cryogenic air not heated before entrance air stove and the high-temperature cooling water from the blast furnace technology equipment point backflow that need to cool down, heat exchange is carried out in circulation water of blast furnace heat-exchanger rig, Cryogenic air is made to be heated up, high-temperature cooling water is lowered the temperature, thus reaching the purpose that residual heat integrative utilizes；It is characterized in that: described method specifically comprises the following steps that
Step 1: circulation water of blast furnace heat-exchanger rig is accessed the hot-air system of blast furnace:
Being connected with cold blast main (11) by the air intake reducer pipe of circulation water of blast furnace heat-exchanger rig, the air outlet slit reducer pipe of circulation water of blast furnace heat-exchanger rig connects with air stove (3), and air stove outlet pipe connects with blast furnace (4) air outlet；
Step 2: circulation water of blast furnace heat-exchanger rig is accessed the circulation of blast furnace:
Any one system connectivity by the water inlet reducer pipe of circulation water of blast furnace heat-exchanger rig and water out reducer pipe and water purification blood circulation, soft water blood circulation or muddy water blood circulation, or any two system connectivity by two groups of water inlet reducer pipes of circulation water of blast furnace heat-exchanger rig and water out reducer pipe with water purification blood circulation, soft water blood circulation or muddy water blood circulation, or three groups of water inlet reducer pipes are connected with water purification blood circulation, soft water blood circulation and muddy water blood circulation respectively with water out reducer pipe: simultaneously
(1) circulation water of blast furnace heat-exchanger rig and water purification blood circulation connection method: the water out reducer pipe of circulation water of blast furnace heat-exchanger rig connects with the water inlet of water purification pond (8), the outlet in water purification pond (8) connects with the water inlet end of clean circulating water pump (7), the cooling water pipe of the blast furnace technology equipment that the connection of clean circulating water pump (7) water side need to cool down, is connected with the water inlet reducer pipe of circulation water of blast furnace heat-exchanger rig by water return pipeline；
(2) circulation water of blast furnace heat-exchanger rig and soft water blood circulation connection method: the water out reducer pipe of circulation water of blast furnace heat-exchanger rig connects with the water inlet end of soft water water pump (6), the cooling water pipe of the blast furnace technology equipment that the connection of soft water water pump (6) water side need to cool down, is connected with the water inlet reducer pipe of circulation water of blast furnace heat-exchanger rig by water return pipeline；
(3) circulation water of blast furnace heat-exchanger rig and muddy water blood circulation connection method: the water out reducer pipe of circulation water of blast furnace heat-exchanger rig connects with the inlet channel of slag making system (5), pulp water is connected with muddy water pond (10) by return pipe after separating, muddy water pond (10) outlet connects with the water inlet end of turbid circulating water pump (9), and turbid circulating water pump (9) water outlet one end connects with the water inlet reducer pipe of circulation water of blast furnace heat-exchanger rig；
Step 3: start aerator (1) and air is slowed down through air intake reducer pipe (21) by cold blast main (11), after entering the air duct heat exchange of circulation water of blast furnace heat-exchanger rig, accelerate then through air outlet slit reducer pipe (24), air is delivered to air stove (3), is then sent through blast furnace (4)；
Step 4:(1) start the clean circulating water pump (7) of water purification blood circulation and water purification is added after the cooling water pipe being sent to the blast furnace technology equipment (41) that need to cool down completes heat exchange, slowed down by water inlet reducer pipe and enter circulation water of blast furnace heat-exchanger rig, after carrying out heat exchange cooling with the compression air of relatively low temperature, after flowing back to water purification pond (8) after being accelerated by the water out reducer pipe of circulation water of blast furnace heat-exchanger rig, then through clean circulating water pump (7) pressurized circulation again；
Or (2) start the soft water water pump (6) of soft water blood circulation and are added by soft water after the cooling water pipe being sent to the blast furnace technology equipment (42) that need to cool down completes heat exchange, slow down through water inlet reducer pipe and enter circulation water of blast furnace heat-exchanger rig, after carrying out heat exchange cooling with the compression air of relatively low temperature, soft water water pump (6), pressurized circulation again is flowed back to after being accelerated by the water out reducer pipe of circulation water of blast furnace heat-exchanger rig；
Or (3) start the turbid circulating water pump (9) of muddy water blood circulation, muddy water is after stokehold completes slag making, muddy water pond (10) is flowed into after slag making system (5) carries out pulp water isolation of purified, pressurizeed by turbid circulating water pump (9), circulation water of blast furnace heat-exchanger rig is entered by water inlet reducer pipe, after carrying out heat exchange cooling with the compression air of relatively low temperature, slag making system (5) is flowed back to after being accelerated by the water out reducer pipe of circulation water of blast furnace heat-exchanger rig, after pulp water isolation of purified, flow into muddy water pond (10), recirculate.
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| CN105043118A (en) * | 2015-08-07 | 2015-11-11 | 广西远望科技有限责任公司 | Heat exchange device and method for comprehensively utilizing smelting industrial waste heat through heat exchange device |
| CN106762255A (en) * | 2016-12-27 | 2017-05-31 | 中国船舶重工集团公司第七研究所 | A kind of device for improving Marine High-power Diesel Engine cold starting performance |
| CN107586904A (en) * | 2017-09-29 | 2018-01-16 | 四川德胜集团钒钛有限公司 | A kind of circulation water of blast furnace utilization system |
| CN108267032A (en) * | 2018-03-07 | 2018-07-10 | 中国华能集团清洁能源技术研究院有限公司 | A kind of heat-exchanger rig and system with honeycomb |
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| CN201187958Y (en) * | 2007-12-18 | 2009-01-28 | 高汉光 | Heat interchanger of compressor for automatically collecting residual heat |
| CN101726195B (en) * | 2009-10-31 | 2012-08-22 | 华南理工大学 | Stainless steel finned tube heat exchanger for residual heat recovery |
| CN202912980U (en) * | 2012-10-26 | 2013-05-01 | 北京京诚科林环保科技有限公司 | Low-temperature exhaust heat recovery system utilizing closed circulation of blast furnace soft water |
| CN103882163A (en) * | 2014-02-24 | 2014-06-25 | 鞍钢集团工程技术有限公司 | Method and device for recovering sensible heat of molten blast furnace slag |
| CN204211758U (en) * | 2014-11-17 | 2015-03-18 | 许军 | A kind of circulation water of blast furnace heat-exchanger rig |
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Effective date of registration: 20160902 Address after: No. 19 A District 545616 building the Guangxi Zhuang Autonomous Region Liuzhou Liu Dong New Area chuyang road 3 No. 190 Patentee after: GUANGXI YUANWANG TECHNOLOGY CO., LTD. Address before: 545006, No. B, building B1-16, information industrial park, No. 15, Gaoxin hi tech Road, the Guangxi Zhuang Autonomous Region, Liuzhou Patentee before: Xu Jun |
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Address after: 545616 No. 190, No. 3, A plant, No. 19, No. 19, early Yang Road, Liu Dong New District, Liuzhou, the Guangxi Zhuang Autonomous Region Patentee after: Guangxi yuan yuan Polytron Technologies Inc Address before: 545616 No. 190, No. 3, A plant, No. 19, No. 19, early Yang Road, Liu Dong New District, Liuzhou, the Guangxi Zhuang Autonomous Region Patentee before: GUANGXI YUANWANG TECHNOLOGY CO., LTD. |
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