CN204752768U - Blast furnace slag water waste heat recovery system - Google Patents
Blast furnace slag water waste heat recovery system Download PDFInfo
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- CN204752768U CN204752768U CN201520525465.9U CN201520525465U CN204752768U CN 204752768 U CN204752768 U CN 204752768U CN 201520525465 U CN201520525465 U CN 201520525465U CN 204752768 U CN204752768 U CN 204752768U
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- cone
- swirler
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Abstract
The utility model relates to an energy recuperation technique, specifically speaking is a blast furnace slag water waste heat recovery system, its characterized in that swirler is by the overflow pipe, the feeding body, cone and underflow pipe are constituteed, the cone is by one section cone, two -stage process cone and three -section cone are constituteed, the big footpath end of one section cone is connected with the feeding body through the ring flange, the big footpath end of two -stage process cone is connected through the path end of ring flange with one section cone, the big footpath end of three -section cone is connected through the path end of ring flange with the two -stage process cone, the path end of three -section cone is connected with the underflow pipe through the ring flange, the feed inlet of swirler is connected with the sedimentation tank through the pipe, the overflow mouth of swirler is connected through the hot water import of pipe with the heat exchanger, be equipped with the water pump on the pipe, hot recovering process at first gets into the sedimentation tank towards the pulp water, it is good to have the treatment effect, the flow is simple, advantages such as the equipment investment is few, be favorable to promoting developing of china's energy saving and emission reduction work, wide development and application prospect have.
Description
Technical field
The utility model relates to a kind of Energy Recovery Technology, and specifically one is applied to blast furnace slag quenching water waste heat recovery device system.
Background technology
Blast furnace slag is the principal by product of steel smelting procedure, and the process of slag mainly adopts hydraulic discharged slag mode to carry out, and flushing cinder process can produce large amount temperature 90
othe high temperature washing slag water of about C.Blast furnace slag quenching water contains a large amount of heat energy, as the thermal source of plant area's heating in winter, bathing and domestic water etc., can reclaim the waste heat of blast furnace slag quenching water well so on the one hand, efficiently solve a series of energy consumptions, the pollution problem of boiler heating on the other hand.
At present, the waste heat reclaiming process of conventional blast furnace slag wash-down water is: blast furnace slag wash-down water-settling pit is removed macrobead sediment-metre filter fine particle-interchanger and carried out heat exchange.After settling pit is separated slag, also have a large amount of fine-grained solids impurity to enter strainer, the water quality of filter process is poor, processing load is high, and the processing power of strainer is lower, strainer particle after operation for some time is easily deposited in pipeline, blocking pipeline and filter core.The pipeline of blocking and filter core worsen filter effect, and need regularly to dredge, clean, the workload of workman is large; Simultaneously solid impurity easily enters interchanger, and cause interchanger to harden, block, heat exchange efficiency is low, cannot long time continuous working, needs routine cleaning, has a strong impact on normal heating.
Summary of the invention
The utility model is intended to overcome prior art defect, and object is the blast furnace slag using exhaust heat of slag flushing water recovery system that a kind of flow process of research and development is simple, utilization rate of waste heat is high, the cleaning interval of good impurity removing effect, interchanger is long.
Solving the problems of the technologies described above can by the following technical solutions:
A kind of waste heat recovery system of blast furnace slag quenching water, it is characterized in that comprising settling tank, water pump, swirler, interchanger and conduit, swirler is by upflow tube, body of feedstock, cone and underflow pipe composition, cone is by one section of cone, two sections of cones and three sections of cone compositions, the bigger diameter end of one section of cone is connected with body of feedstock through ring flange, the bigger diameter end of two sections of cones is connected through the miner diameter end of ring flange with one section of cone, the bigger diameter end of three sections of cones is connected through the miner diameter end of ring flange with two sections of cones, the miner diameter end of three sections of cones is connected with underflow pipe through ring flange, wherein the cone angle of one section of cone is maximum, the cone angle of two sections of cones is minimum, the cone angle size of three sections of cones is placed in the middle, body of feedstock and underflow pipe all adopt high temperature resistant, high-abrasive material.The opening for feed of swirler is connected with settling tank through conduit, the overflow port of swirler is connected with the hot water inlet of interchanger through conduit, conduit is provided with water pump, heat recovering process is that first washing slag water enters settling tank, in settling tank, carry out a solid-liquid separation, the clear liquid of settling tank to be squeezed in swirler by swirler opening for feed through pump and is carried out secondary solid-liquid separation, and swirler underflow via conduit returns settling tank, swirler overflow enters heat exchange in interchanger by water pump, returns and carry out flushing cinder after heat exchange.
Interchanger described in the utility model is plate-type heat exchanger, have that heat transfer coefficient is high, adaptability is large, be easy to unpick and wash and the advantage such as repairing, because swirler eliminates solid impurity, blocking, the scale formation of heat exchanger plate and pipeline are lighter, thus extend the cleaning interval, improve service life of equipment, reduce running cost.
The centre of settling tank described in the utility model is provided with baffle plate, settling tank is divided into sand setting district and clear water zone, slag wash-down water and swirler underflow feed sand setting district, the upper clear supernate in sand setting district flows into clear water zone, the water of clear water zone feeds swirler, settling tank is as one-level solid-liquid separating equipment, and construction and the maintenance cost of one side settling tank are low, and treatment capacity is large and better to the treatment effect of coarse grain blast furnace slag; Settling tank is to the strong adaptability of the blast furnace slag flushing water yield on the other hand, and water yield fluctuation does not affect its solid-liquid separation effect, can stablize the feeding of swirler, ensures swirler solid-liquid separation effect.
Water pump described in the utility model is centrifugal type slurry pump, and the flow of Pulp pump and lift meet the requirement of swirler treatment capacity and feed pressure.
Swirler described in the utility model, as secondary solid-liquid separating equipment, is removed the solid impurity in washing slag water by cyclonic separation effect, has been purified the water quality entering interchanger; In addition, the underflow of swirler returns settling tank, forms two-stage solid-liquid separation closed-circuit system, can also reduce the loss of washing slag water with settling tank, improves the utilization ratio of washing slag water.
The utility model is to substitute strainer at the basic forward spin flow device of former technique compared to the advantage of existing using exhaust heat of slag flushing water recovery process, settling tank upper clear supernate directly enters swirler, because the dust removal rate of swirler is high, inclusion-free accumulated plugging phenomenon, continuously-running, eliminate filter stoppage, the problems such as routine cleaning replacing, pass through settling tank, swirler carries out slightly to blast furnace slag quenching water, thin twice solid-liquid separation, solution removal of impurities, good purification, the water quality entering interchanger can be improved, significantly alleviate the latch up phenomenon of pipeline, extend the interchanger cleaning interval, there is treatment effect good, flow process is simple, the advantages such as facility investment is few, be conducive to promoting carrying out of China's energy-saving and emission-reduction work, there is wide development and application prospect.
Accompanying drawing explanation
Fig. 1 is the hydrocyclone structure schematic diagram in the utility model.
Fig. 2 is process flow diagram of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, the utility model is further described.
As shown in the figure: a kind of waste heat recovery system of blast furnace slag quenching water, it is characterized in that comprising settling tank 10, water pump 20, swirler 30, interchanger 40 and conduit, described settling tank 10 is provided with baffle plate in centre, settling tank is divided into sand setting district and clear water zone by baffle plate, slag wash-down water and swirler underflow via conduit feed sand setting district, the upper clear supernate in sand setting district flows into clear water zone, the water of clear water zone feeds swirler through conduit, settling tank is as one-level solid-liquid separating equipment, construction and the maintenance cost of one side settling tank are low, treatment capacity is large and better to the treatment effect of coarse grain blast furnace slag, settling tank is to the strong adaptability of the blast furnace slag flushing water yield on the other hand, and water yield fluctuation does not affect its solid-liquid separation effect, can stablize the feeding of swirler, ensures swirler solid-liquid separation effect, described swirler 30 is by upflow tube, body of feedstock, cone and underflow pipe composition, cone is by one section of cone, two sections of cones and three sections of cone compositions, the bigger diameter end of one section of cone is connected with body of feedstock through ring flange, the bigger diameter end of two sections of cones is connected through the miner diameter end of ring flange with one section of cone, the bigger diameter end of three sections of cones is connected through the miner diameter end of ring flange with two sections of cones, the miner diameter end of three sections of cones is connected with underflow pipe through ring flange, wherein the cone angle of one section of cone is maximum, the cone angle of two sections of cones is minimum, the cone angle size of three sections of cones is placed in the middle, body of feedstock and underflow pipe all adopt high temperature resistant, high-abrasive material, described interchanger 40 is plate-type heat exchanger, have that heat transfer coefficient is high, adaptability is large, be easy to unpick and wash and the advantage such as repairing, because swirler eliminates solid impurity, blocking, the scale formation of heat exchanger plate and pipeline are lighter, thus extend the cleaning interval, improve service life of equipment, reduce running cost, described water pump 30 is centrifugal type slurry pump, the flow of Pulp pump and lift meet the requirement of swirler treatment capacity and feed pressure, the opening for feed of the swirler in the utility model is connected with settling tank through conduit, the overflow port of swirler is connected with the hot water inlet of interchanger through conduit, conduit is provided with water pump, heat recovering process is that first washing slag water enters settling tank, a solid-liquid separation is carried out in settling tank, the clear liquid of settling tank to be squeezed in swirler by swirler opening for feed through pump and is carried out secondary solid-liquid separation, swirler underflow via conduit returns settling tank, swirler overflow enters heat exchange in interchanger by water pump, return after heat exchange and carry out flushing cinder, described swirler is as secondary solid-liquid separating equipment, the solid impurity in washing slag water is removed by cyclonic separation effect, purify the water quality entering interchanger, in addition, the underflow of swirler returns settling tank, forms two-stage solid-liquid separation closed-circuit system, can also reduce the loss of washing slag water with settling tank, improves the utilization ratio of washing slag water.The utility model is to substitute strainer at the basic forward spin flow device of former technique compared to the advantage of existing using exhaust heat of slag flushing water recovery process, settling tank upper clear supernate directly enters swirler, because the dust removal rate of swirler is high, inclusion-free accumulated plugging phenomenon, continuously-running, eliminate filter stoppage, the problems such as routine cleaning replacing, pass through settling tank, swirler carries out slightly to blast furnace slag quenching water, thin twice solid-liquid separation, solution removal of impurities, good purification, the water quality entering interchanger can be improved, significantly alleviate the latch up phenomenon of pipeline, extend the interchanger cleaning interval, there is treatment effect good, flow process is simple, the advantages such as facility investment is few, be conducive to promoting carrying out of China's energy-saving and emission-reduction work, there is wide development and application prospect.
Embodiment 1:
As shown in Figure 1, swirler is made up of upflow tube (1), body of feedstock (2), auger (3), middle cone (4), conelet (5) and underflow opening (6), and wherein cone can be divided into 1 ~ 3 to bore section.
As shown in Figure 2, a kind of blast furnace slag quenching water waste heat recovery novel process is made up of equipment such as settling tank, pump, swirler, plate-type heat exchangers.
Its technical process is: first (1) washing slag water enters settling tank, carries out a solid-liquid separation in settling tank, and precipitation slag is caught by claw bucket sling and is stacked at the dehydration of slag field, and the clear liquid of settling tank squeezes into swirler through pump; (2) overflow of settling tank carries out secondary solid-liquid separation in swirler, and swirler underflow returns settling tank, and overflow enters interchanger; (3) swirler overflow heat exchange in interchanger, returns flushing cinder after heat exchange.
Claims (4)
1. a waste heat recovery system of blast furnace slag quenching water, it is characterized in that comprising settling tank, water pump, swirler, interchanger and conduit, swirler is by upflow tube, body of feedstock, cone and underflow pipe composition, cone is by one section of cone, two sections of cones and three sections of cone compositions, the bigger diameter end of one section of cone is connected with body of feedstock through ring flange, the bigger diameter end of two sections of cones is connected through the miner diameter end of ring flange with one section of cone, the bigger diameter end of three sections of cones is connected through the miner diameter end of ring flange with two sections of cones, the miner diameter end of three sections of cones is connected with underflow pipe through ring flange, wherein the cone angle of one section of cone is maximum, the cone angle of two sections of cones is minimum, the cone angle size of three sections of cones is placed in the middle, the opening for feed of swirler is connected with settling tank through conduit, the overflow port of swirler is connected with the hot water inlet of interchanger through conduit, conduit is provided with water pump.
2. a kind of waste heat recovery system of blast furnace slag quenching water according to claim 1, is characterized in that interchanger is plate-type heat exchanger.
3. a kind of waste heat recovery system of blast furnace slag quenching water according to claim 1, it is characterized in that being provided with baffle plate in the middle of settling tank, settling tank is divided into sand setting district and clear water zone, the water of clear water zone feeds swirler.
4. a kind of waste heat recovery system of blast furnace slag quenching water according to claim 1, is characterized in that water pump is centrifugal type slurry pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520525465.9U CN204752768U (en) | 2015-07-20 | 2015-07-20 | Blast furnace slag water waste heat recovery system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520525465.9U CN204752768U (en) | 2015-07-20 | 2015-07-20 | Blast furnace slag water waste heat recovery system |
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| CN204752768U true CN204752768U (en) | 2015-11-11 |
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| CN201520525465.9U Active CN204752768U (en) | 2015-07-20 | 2015-07-20 | Blast furnace slag water waste heat recovery system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108080158A (en) * | 2017-12-17 | 2018-05-29 | 江苏日升电力机械有限公司 | A kind of coal, pulverulent fuel mixer eddy flow mechanism |
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2015
- 2015-07-20 CN CN201520525465.9U patent/CN204752768U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108080158A (en) * | 2017-12-17 | 2018-05-29 | 江苏日升电力机械有限公司 | A kind of coal, pulverulent fuel mixer eddy flow mechanism |
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