CN103103301B - Multi-path heat exchanger for blast furnace slag flushing water - Google Patents
Multi-path heat exchanger for blast furnace slag flushing water Download PDFInfo
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- CN103103301B CN103103301B CN201310067758.2A CN201310067758A CN103103301B CN 103103301 B CN103103301 B CN 103103301B CN 201310067758 A CN201310067758 A CN 201310067758A CN 103103301 B CN103103301 B CN 103103301B
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- cinder
- flushing
- water
- heat exchange
- heat exchanger
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B2400/00—Treatment of slags originating from iron or steel processes
- C21B2400/08—Treatment of slags originating from iron or steel processes with energy recovery
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Abstract
The invention relates to a multi-path heat exchanger for blast furnace slag flushing water, and the multi-path heat exchanger is of a welding plate structure. Multiple heat exchange units are assembled and stacked into a heat exchange plate bundle, each heat exchange unit comprises multiple horizontally-placed heat transfer plates, one side of the heat transfer plate is provided with a slag flushing water channel, the other side of the heat transfer plate is provided with a secondary water channel, one side of the slag flushing water channel is contactless, each slag flushing water channel is folded through slag flushing water pipe boxes connected to the two ends of the heat exchange plate bundle so as to form a contactless single-channel slag flushing water heat exchange flow path, and the heat exchange plate bundle assembled and stacked by multiple heat exchange units forms multiple contactless single-channel slag flushing water heat exchange flow paths which are connected in parallel; the outer side of a flat cover of each slag flushing water pipe box is provided with a slag flushing water diversion box, and the slag flushing water diversion box realizes the functions of flow diversion, flow collection, adapter tube importing and exporting, disassembling and flushing through an inlet and an outlet of a slag flushing water channel on the flat cover of the pipe box; and two pairs of secondary water pipe boxes are arranged on both sides of the heat exchange plate bundle. The structure of the heat exchanger can be used for solving the blocking problem caused by slag flushing water; and the heat exchanger is long in operation cycle, convenient to flush, compact in structure and high in heat transfer efficiency.
Description
Technical field
The present invention relates to the heat-exchange apparatus for reclaiming blast furnace slag quenching water waste-heat intermediate water, relate in particular to a kind of blast furnace slag quenching water narrow boards sheet multipaths heat exchanger of welded plate type structure.
Background technology
Blast furnace ironmaking produces a large amount of high-temperature slags, after shrend, produce a large amount of 60～90 DEG C of flushing cinder water, flushing cinder water contains solid particle and especially contains a large amount of suspensions, if directly heating meeting is deposited, is stopped up at pipeline, radiator, and indirect heat exchange adopts conventional heat exchanger can stop up equally, cannot use by long period, therefore, using exhaust heat of slag flushing water is all less than comprehensive, effective recycling for many years.
The heat exchanger reclaiming for using exhaust heat of slag flushing water at present mainly contains conventional tube shell heat exchanger, spiral-plate heat exchanger, and the very short time can stop up in actual applications, is difficult to dredging.Have a kind of slag-water heat exchanger, adopt plane heat exchange plate, cold water side to establish spacing column, many plates, to flow passage structure, owing to containing a large amount of suspensions in flushing cinder water, in the knitmesh of Qi Duobandui runner import department, stop up heat exchanger.
Summary of the invention
Technical problem to be solved by this invention is that flushing cinder water contains a large amount of solid particles and especially contains a large amount of suspensions, a difficult problem of very easily depositing, stopping up in heat exchanger heat transfer element import department, heat transfer element inside, the present invention overcomes the deficiencies in the prior art, and a kind of alluvial, blast furnace slag flushing water-to-water heat exchanger stopping up of preventing is provided.
The present invention is achieved by the following technical programs:
A kind of blast furnace slag quenching water multipaths heat exchanger, comprise a pair of flushing cinder water adapter and the two pairs of intermediate waters adapters that are located at upper and lower two ends, two cinder-flushing water pipe casees that two ends arrange, two cinder-flushing water pipe case flat covers that are connected with cinder-flushing water pipe case and current divider box thereof, two pairs of intermediate water bobbin carriages at two ends, both sides and be arranged on cinder-flushing water pipe case, the heat exchanger plates bundle being formed by multiple heat exchange units between intermediate water bobbin carriage, described heat exchange unit comprises the heat transferring plate of multiple horizontal set one by one, described heat transferring plate one side is that flushing cinder water flow passage opposite side is intermediate water runner, flushing cinder water flow passage and intermediate water runner replace successively, the flushing cinder water flow passage side non-contact-point of heat transferring plate, in described cinder-flushing water pipe case, be provided with segmentation dividing plate, described segmentation dividing plate is divided into cinder-flushing water pipe case in the multistage cinder-flushing water pipe case of corresponding heat exchange unit, every section of cinder-flushing water pipe case outer upper end is provided with the flushing cinder water flow passage import being connected with cinder-flushing water pipe case flat cover, outside every section of cinder-flushing water pipe case, lower end is provided with the flushing cinder water flow passage outlet being connected with cinder-flushing water pipe case flat cover, each flushing cinder water flow passage of described heat exchange unit is rolled over a contactless single channel flushing cinder water heat exchange process of journey formation by the corresponding section cinder-flushing water pipe case that is connected to heat exchanger plates bundle two ends, in described intermediate water bobbin carriage, be provided with interlayer bobbin carriage, intermediate water bobbin carriage is segmented into the multistage intermediate water bobbin carriage of corresponding heat exchange unit, the intermediate water runner of described heat exchange unit is by being connected to heat exchanger plates bundle both sides, the two pairs of corresponding section intermediate water bobbin carriages carry out both sides and enter both sides and go out to roll over journey and form intermediate water heat exchange process, multiple heat exchange units of described heat exchanger plates bundle form multiple parallel connections, the intermediate water heat exchange process of multiple parallel connections of contactless single channel flushing cinder water heat exchange process and correspondence.
In described every section of cinder-flushing water pipe case, be provided with cinder-flushing water pipe separator for container, from the import of flushing cinder water flow passage, first intermediate water runner correspondence position of heat exchange unit arranges dividing plate, dividing plate is not established in corresponding intermediate water runner position in other end cinder-flushing water pipe case, in next cinder-flushing water pipe case, intermediate water passage correspondence position arranges on the contrary, replaces successively.
In described every section of intermediate water bobbin carriage, the flushing cinder water flow passage correspondence position of the one or more intermediate water runners in interval is provided with intermediate water bobbin carriage dividing plate.
The outside of described two ends cinder-flushing water pipe case is provided with cinder-flushing water pipe case flat cover, on described cinder-flushing water pipe case flat cover, establishes flushing cinder water flow passage import and export, and described flushing cinder water shunting case is located at cinder-flushing water pipe case flat cover outside.
Described heat transferring plate is provided with ripple, and ripple is at flushing cinder water flow passage one side non-contact-point.
Described heat transferring plate is tabula rasa.
Described heat exchanger plates bundle flushing cinder water flow passage width is greater than intermediate water width of flow path.
The invention has the beneficial effects as follows:
Due to the heat transferring plate horizontal positioned of heat exchange unit of the present invention, heat transferring plate flushing cinder water flow passage one side is contactless, each flushing cinder water flow passage is rolled over a contactless single channel flushing cinder water heat exchange process of journey formation by being connected to the cinder-flushing water pipe case at heat exchanger plates bundle two ends, flushing cinder water all can not deposit, stop up in runner import department and inside thereof, the heat exchanger plates bundle that multiple heat exchange unit groups build up forms single channel flushing cinder water heat exchange process multiple parallel connections, contactless and naturally also can not stop up, and has improved the treating capacity of heat exchanger simultaneously; Be located at the flushing cinder water shunting case in cinder-flushing water pipe case flat cover outside, it realizes by being located at flushing cinder current road junction import and export on bobbin carriage flat cover the effect that shunting, afflux, adapter import and export, thereby realized multiple parallel connections, contactless single channel flushing cinder water heat exchange process, bobbin carriage flat cover is realized the function that dismounting is rinsed.Two pairs of intermediate water bobbin carriages at two ends, both sides, a pair of import bobbin carriage, a pair of outlet bobbin carriage, realize both sides and enter both sides and go out, the uniformity that intermediate water distributes on plate promotes, and the heat transfer efficiency of heat exchanger improves, in described intermediate water bobbin carriage, be provided with interlayer bobbin carriage, intermediate water bobbin carriage is segmented into the multistage intermediate water bobbin carriage corresponding with heat exchange unit, improves heat exchange efficiency, make that waste heat is as much as possible to be recovered.The invention solves a difficult problem for flushing cinder water slug, flushing cinder water does not need to filter and directly enters heat exchanger recovery waste heat, and the operation cycle is long, rinse convenience, compact conformation, heat transfer efficiency are high.
Brief description of the drawings
Fig. 1 is main TV structure figure of the present invention.
Fig. 2 is flushing cinder Water flow-path figure of the present invention.
Fig. 3 is intermediate water water inlet flow chart of the present invention.
Fig. 4 is intermediate water water outlet flow chart of the present invention.
Fig. 5 is runner figure of the present invention.
In figure: 1. flushing cinder water is taken over, 2. cinder-flushing water pipe case flat cover, 3. intermediate water is taken over, 4. pressure strip, 5. pull bar, 6. heat transferring plate, 7. stifled bar, 8. cinder-flushing water pipe separator for container, 9. cinder-flushing water pipe case 10. interlayer bobbin carriages, 11. flushing cinder water flow passage, 12. intermediate water runners, 13. segmentation dividing plates, 14. flushing cinder water flow passage imports, 15. flushing cinder water flow passage outlets, 101. flushing cinder water shunting casees, 102. intermediate water bobbin carriages, A. flushing cinder water, B. intermediate water.
Detailed description of the invention
In order to make those skilled in the art understand better technical scheme of the present invention, below in conjunction with accompanying drawing and most preferred embodiment, the present invention is described in further detail.
As shown in the figure, the present invention includes a pair of flushing cinder water adapter 1 and the two pairs of intermediate waters adapters 3 that are located at upper and lower two ends, two cinder-flushing water pipe casees 9 that two ends arrange, two cinder-flushing water pipe case flat covers 2 that are connected with cinder-flushing water pipe case 9 and current divider box 101 thereof, two pairs of intermediate water bobbin carriages 102 at two ends, both sides, be arranged on cinder-flushing water pipe case, pressure strip 4 and the pull bar 5 of the heat exchanger plates bundle between intermediate water bobbin carriage and clamping heat exchanger plates bundle, described heat exchanger plates bundle comprises multiple heat exchange units, described heat exchange unit comprises the heat transferring plate 6 and stifled bar 7 of multiple horizontal set, described heat transferring plate one side is that flushing cinder water flow passage 11 opposite sides are intermediate water runner 12, flushing cinder water flow passage and intermediate water runner replace successively, the flushing cinder water flow passage side non-contact-point of heat transferring plate, in described cinder-flushing water pipe case, be provided with segmentation dividing plate 13, described segmentation dividing plate is divided into cinder-flushing water pipe case in the multistage cinder-flushing water pipe case of corresponding heat exchange unit, every section of cinder-flushing water pipe case outer upper end is provided with the flushing cinder water flow passage import 14 being connected with flushing cinder water tank, outside every section of cinder-flushing water pipe case, lower end is provided with the flushing cinder water flow passage outlet 15 being connected with flushing cinder water tank, each flushing cinder water flow passage of heat exchange unit is rolled over a contactless single channel flushing cinder water heat exchange process of journey formation by being connected to the cinder-flushing water pipe case at heat exchanger plates bundle two ends, in described intermediate water bobbin carriage, be provided with interlayer bobbin carriage 10, intermediate water bobbin carriage is segmented into the multistage intermediate water bobbin carriage corresponding with heat exchange unit, described intermediate water passage carries out both sides and enters both sides and go out to roll over journey and form intermediate water heat exchange process by being connected to the corresponding section of a two couples intermediate water bobbin carriage for heat exchanger plates bundle both sides, multiple heat exchange units of described heat exchanger plates bundle form multiple parallel connections, the intermediate water heat exchange process of multiple parallel connections of contactless single channel flushing cinder water heat exchange process and correspondence.
Each flushing cinder water flow passage of heat exchange unit described in this example is rolled over a contactless single channel flushing cinder Water flow-path of journey formation by being connected to the cinder-flushing water pipe case at heat exchanger plates bundle two ends, realize by cinder-flushing water pipe separator for container 8 being set in every section of cinder-flushing water pipe case: from the import of flushing cinder water flow passage, first intermediate water runner correspondence position of heat exchange unit arranges dividing plate, dividing plate is not established in corresponding intermediate water runner position in other end cinder-flushing water pipe case, in next cinder-flushing water pipe case, intermediate water passage correspondence position arranges on the contrary, replaces successively.
In the bobbin carriage of intermediate water described in this example, be provided with interlayer bobbin carriage 10, intermediate water bobbin carriage is segmented into the multistage intermediate water bobbin carriage corresponding with heat exchange unit, and described intermediate water runner carries out both sides and enters both sides and go out to roll over journey to form intermediate water heat exchange process be to be provided with intermediate water bobbin carriage dividing plate by the flushing cinder water flow passage correspondence position of the one or more intermediate water runners in interval in described every section of intermediate water bobbin carriage to realize by being connected to the corresponding section of a two couples intermediate water bobbin carriage for heat exchange unit both sides.
The flushing cinder water flow passage width of described heat exchanger plates bundle is greater than intermediate water width of flow path.
The heat transferring plate horizontal positioned of the bundle of heat exchanger plates described in this example, plate is established ripple, and every two plate make-ups are welded to form plate pair, and plate internally forms intermediate water passage, and plate intermediate water channel side has contact, can pressure-bearing by these contact point postwelding inside; Certainly plate also can not established ripple employing tabula rasa by realizing in intermediate water channel side weldering muscle, post mode, but heat transfer efficiency is low; Many group heat transfer plates are connected into unit to block up bar 7 support group stitch welding by both sides, many group heat exchange unit composition heat exchanger plates bundles are clamped by pressure strip 4, pull bar 5, plate between form flushing cinder water flow passage, due to the support of stifled bar 7, heat transferring plate flushing cinder water flow passage side wave line non-contact-point, flushing cinder water flow passage one side is contactless; Stifled bar supports also can be by realizing the plate side mode that directly upset is joined.
Flushing cinder water is taken over and is entered flushing cinder water shunting case by flushing cinder water, shunt, enter front end cinder-flushing water pipe case by multiple flushing cinder water flow passage imports on cinder-flushing water pipe case flat cover, import the heat transferring plate of multiple heat exchange units by cinder-flushing water pipe separator for container, arrive rear end cinder-flushing water pipe case separately with after intermediate water heat exchange, enter heat transferring plate by cinder-flushing water pipe separator for container folding Cheng Zaici and arrive front end cinder-flushing water pipe case, roll over for several times after journey after cinder-flushing water pipe case flat cover upper punch pulp water runner exit enters flushing cinder water shunting case and collects, take over outflow heat exchanger by flushing cinder water.In the whole heat transfer process of each heat exchange unit, flushing cinder water is all rolled over journey after flowing through each flushing cinder water flow passage, whole flushing cinder water flow passage is connected to the flushing cinder water heat exchange process that only has a passage by folding journey.And the heat exchanger plates bundle that multiple heat exchange unit groups build up forms the contactless single channel flushing cinder water heat exchange process of multiple parallel connections, improve heat exchanger treating capacity.
Two cinder-flushing water pipe casees are respectively at the two ends of heat exchanger plates bundle, and flushing cinder water inlet is taken over and flushing cinder water shunting case is located on front-end pipe box, and discharge connection and flushing cinder water shunting case thereof are located on rear end header.Two cinder-flushing water pipe casees arrange bobbin carriage flat cover 2, unclamp bolt and open after flat cover, can rinse quickly and easily flushing cinder water flow passage.Flushing cinder water shunting case is located at cinder-flushing water pipe case flat cover outside, and it is realized shunting, afflux, adapter and import and export, dismantle the function of flushing by being located at flushing cinder current road junction import and export on bobbin carriage flat cover.
Two pairs of intermediate water bobbin carriages are in side, heat exchanger plates bundle two ends, four square rings are arranged around heat exchanger plates bundle, the each section of importing heat transfer plate that intermediate water takes over by intermediate water two intermediate water bobbin carriages that enter the same side is internal, with two the intermediate water bobbin carriages of this section that arrive offside after the heat exchange of flushing cinder water, after folding journey, again enter heat transfer plate and internally carry out heat exchange, after baffling, take over outflow heat exchanger through intermediate water for several times.Because intermediate water is cleaner, do not stop up heat exchanger, the runner number of at every turn rolling over journey can be multiple; Can certainly single channel, structure can be more complicated and meaningless.Two pairs of intermediate water bobbin carriages at two ends, both sides, a pair of import bobbin carriage, a pair of outlet bobbin carriage, realize both sides and enter both sides and go out, the uniformity of distribution promotes, and the heat transfer efficiency of heat exchanger improves, in described intermediate water bobbin carriage, be provided with interlayer bobbin carriage, intermediate water bobbin carriage is segmented into the multistage intermediate water bobbin carriage corresponding with heat exchange unit, improves heat exchange efficiency, make that waste heat is as much as possible to be recovered.
Intermediate water entrance sleeve is located on the bobbin carriage of two of both sides, same one end, and discharge connection is on two bobbin carriages of other end both sides.
The present invention, as a kind of full-welding plate-type heat exchanger, also can be used for the media for heat exchange that other contains solid particle and suspension.
Flushing cinder water duckbill structure of the present invention and semi-circular tube structure, do not need flushing cinder water shunting case, uses and increased the flexibility that heat exchanger flushing cinder water is taken over on-the-spot pipe arrangement, has better adaptability.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (7)
1. a blast furnace slag quenching water multipaths heat exchanger, it is characterized in that, comprise a pair of flushing cinder water adapter and the two pairs of intermediate waters adapters that are located at upper and lower two ends, two cinder-flushing water pipe casees that two ends arrange, two cinder-flushing water pipe case flat covers that are connected with cinder-flushing water pipe case and current divider box thereof, two pairs of intermediate water bobbin carriages at two ends, both sides and be arranged on cinder-flushing water pipe case, the heat exchanger plates bundle being formed by multiple heat exchange units between intermediate water bobbin carriage, described heat exchange unit comprises the heat transferring plate of multiple horizontal set one by one, described heat transferring plate one side is that flushing cinder water flow passage opposite side is intermediate water runner, flushing cinder water flow passage and intermediate water runner replace successively, the flushing cinder water flow passage side non-contact-point of heat transferring plate, in described cinder-flushing water pipe case, be provided with segmentation dividing plate, described segmentation dividing plate is divided into cinder-flushing water pipe case in the multistage cinder-flushing water pipe case of corresponding heat exchange unit, every section of cinder-flushing water pipe case outer upper end is provided with the flushing cinder water flow passage import being connected with cinder-flushing water pipe case flat cover, outside every section of cinder-flushing water pipe case, lower end is provided with the flushing cinder water flow passage outlet being connected with cinder-flushing water pipe case flat cover, each flushing cinder water flow passage of described heat exchange unit is rolled over a contactless single channel flushing cinder water heat exchange process of journey formation by the corresponding section cinder-flushing water pipe case that is connected to heat exchanger plates bundle two ends, in described intermediate water bobbin carriage, be provided with interlayer bobbin carriage, intermediate water bobbin carriage is segmented into the multistage intermediate water bobbin carriage of corresponding heat exchange unit, the intermediate water runner of described heat exchange unit is by being connected to heat exchanger plates bundle both sides, the two pairs of corresponding section intermediate water bobbin carriages carry out both sides and enter both sides and go out to roll over journey and form intermediate water heat exchange process, multiple heat exchange units of described heat exchanger plates bundle form multiple parallel connections, the intermediate water heat exchange process of multiple parallel connections of contactless single channel flushing cinder water heat exchange process and correspondence.
2. a kind of blast furnace slag quenching water multipaths heat exchanger according to claim 1, it is characterized in that, in described every section of cinder-flushing water pipe case, be provided with cinder-flushing water pipe separator for container, from the import of flushing cinder water flow passage, first intermediate water runner correspondence position of heat exchange unit arranges dividing plate, dividing plate is not established in corresponding intermediate water runner position in other end cinder-flushing water pipe case, in next cinder-flushing water pipe case, intermediate water passage correspondence position arranges on the contrary, replaces successively.
3. a kind of blast furnace slag quenching water multipaths heat exchanger according to claim 1, is characterized in that, in described every section of intermediate water bobbin carriage, the flushing cinder water flow passage correspondence position of the one or more intermediate water runners in interval is provided with intermediate water bobbin carriage dividing plate.
4. according to a kind of blast furnace slag quenching water multipaths heat exchanger described in claim 1, it is characterized in that, the outside of described two ends cinder-flushing water pipe case is provided with cinder-flushing water pipe case flat cover, on described cinder-flushing water pipe case flat cover, establish flushing cinder water flow passage import and export, described flushing cinder water shunting case is located at cinder-flushing water pipe case flat cover outside.
5. according to a kind of blast furnace slag quenching water multipaths heat exchanger described in any one in claim 1 to 4, it is characterized in that, described heat transferring plate is provided with ripple, and ripple is at flushing cinder water flow passage one side non-contact-point.
6. according to a kind of blast furnace slag quenching water multipaths heat exchanger described in any one in claim 1 to 4, it is characterized in that, described heat transferring plate is tabula rasa.
7. according to a kind of blast furnace slag quenching water multipaths heat exchanger described in any one in claim 1 to 4, it is characterized in that, described heat exchanger plates bundle flushing cinder water flow passage width is greater than intermediate water width of flow path.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310067758.2A CN103103301B (en) | 2013-03-04 | 2013-03-04 | Multi-path heat exchanger for blast furnace slag flushing water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310067758.2A CN103103301B (en) | 2013-03-04 | 2013-03-04 | Multi-path heat exchanger for blast furnace slag flushing water |
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| Publication Number | Publication Date |
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| CN103103301A CN103103301A (en) | 2013-05-15 |
| CN103103301B true CN103103301B (en) | 2014-07-16 |
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| CN201310067758.2A Active CN103103301B (en) | 2013-03-04 | 2013-03-04 | Multi-path heat exchanger for blast furnace slag flushing water |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105803138A (en) * | 2014-12-31 | 2016-07-27 | 天津华赛尔传热设备有限公司 | Multi-channel multi-process heat exchanger of slag-flushing water |
| CN105806105A (en) * | 2014-12-31 | 2016-07-27 | 天津华赛尔传热设备有限公司 | Plate heat exchanger |
| CN105157456B (en) * | 2015-09-25 | 2018-08-03 | 航天海鹰(哈尔滨)钛业有限公司 | A kind of technical grade micro-channel heat exchanger |
| CN106834571B (en) * | 2017-01-20 | 2018-12-04 | 同济大学 | A kind of blast-furnace cement sensible heat recycling slag cooler |
| CN112146488B (en) * | 2020-09-10 | 2022-07-19 | 山东旺泰科技有限公司 | Silicon carbide plate heat exchanger |
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| CN102829656A (en) * | 2012-09-25 | 2012-12-19 | 山东北辰机电设备股份有限公司 | Heat exchanger for cinder flushing water of blast furnace |
| CN202643713U (en) * | 2012-04-25 | 2013-01-02 | 深圳市中矿投资管理有限公司 | Blast furnace slag flushing water waste heat recovery system |
| CN203159635U (en) * | 2013-03-04 | 2013-08-28 | 天津华赛尔传热设备有限公司 | Multi-flow heat exchanger for blast furnace slag washing water |
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2013
- 2013-03-04 CN CN201310067758.2A patent/CN103103301B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202643713U (en) * | 2012-04-25 | 2013-01-02 | 深圳市中矿投资管理有限公司 | Blast furnace slag flushing water waste heat recovery system |
| CN102829656A (en) * | 2012-09-25 | 2012-12-19 | 山东北辰机电设备股份有限公司 | Heat exchanger for cinder flushing water of blast furnace |
| CN203159635U (en) * | 2013-03-04 | 2013-08-28 | 天津华赛尔传热设备有限公司 | Multi-flow heat exchanger for blast furnace slag washing water |
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