CN201475974U - Smoke radiation baffle plate in special-purpose exhaust-heat boiler of rotary furnace - Google Patents
Smoke radiation baffle plate in special-purpose exhaust-heat boiler of rotary furnace Download PDFInfo
- Publication number
- CN201475974U CN201475974U CN2009202244433U CN200920224443U CN201475974U CN 201475974 U CN201475974 U CN 201475974U CN 2009202244433 U CN2009202244433 U CN 2009202244433U CN 200920224443 U CN200920224443 U CN 200920224443U CN 201475974 U CN201475974 U CN 201475974U
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- tube panel
- heat boiler
- baffle plate
- special
- waste heat
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Abstract
The utility model relate to a heat exchange baffle plate, especially a smoke radiation baffle plate in special-purpose exhaust-heat boiler for zincum-containing dust recovery of rotary furnace, and belongs to the boiler heat exchange technology field. The smoke radiation baffle plate in special-purpose exhaust-heat boiler of rotary furnace comprises a pipe screen, an inlet collecting box, an outlet collecting box, a spring vibrating and beating device; the pipe screen is a plate-shaped structure composed of heat exchange pipes having a water inlet and a water outlet; the inlet collecting box is in communication with the water inlet by the pipe screen; the outlet collecting box is in communication with the water outlet by the pipe screen; and the spring vibrating and beating device is disposed on the pipe screen. The utility model can cause the high temperature smoke to fill the cavity and flow, guarantee the utilization of radiation heated surface in the cavity; and guarantee the proper temperature of the smoke entering the rear part of the heated surface.
Description
Technical field
The utility model relates to a kind of heat exchange baffle plate, particularly rotary hearth furnace zinc-containing dust and reclaims gas radiation baffle plate in the special-purpose waste heat boiler, belongs to the boiler technical field of heat exchange.
Background technology
Steel mill will produce a large amount of dust every day, and wherein the Main Ingredients and Appearance of most of dust is iron and carbon, also contains part zinc simultaneously.Removing general employing of these dust sinters pelletizing into and returns blast furnace again and smelt.But in sintering process, the zinc in the dust nearly all left behind, and makes the zinc content in the pelletizing more and more high, can generate the zinc attachment in blast furnace, has a strong impact on the use of blast furnace.At this situation, domestic-developed has gone out the technology of rotary hearth furnace method recovery dust.The dirt mud that this technology will contain iron and carbon carries out the high temperature reduction of iron oxide, and the zinc in the dirt mud and other impurity then are removed and are discharged in the waste gas, have solved the dust problem of steel mill.High temperature reduction produces a large amount of 1100～1200 ℃ high temperature and contains the zinc flue gas, feed waste heat boiler and carry out waste heat recovery, so waste heat boiler is the visual plant of a whole set of zinc-containing dust recovery system of rotary hearth furnace.Owing to produce the oxide that mainly contains zinc in a large amount of 1100～1200 ℃ high-temperature flue gas and chloride, plumbous oxide and chloride, alkali-metal chloride and ferriferous oxide at high temperature reduction, these oxides and chloride at high temperature (400～800 ℃) bond together mutually, thereby can influence the operation of waste heat boiler.Therefore, the design of waste heat boiler should be considered to be stained with too many dust on tube wall, can reclaim the heat in the flue gas again under harsh conditions as much as possible.
Waste heat boiler adopts the boiler of water pipe form, and horizontal layout forces the water in the pipe to circulate by circulating pump.Be provided with the cavity of forming by water-cooling wall in the waste heat boiler, reduce flue-gas temperature, make the dust in flue gas whereabouts of condensing as far as possible, finally reach to reduce to and require temperature through the flue-gas temperature behind the heating surface of rear portion by radiation heat transfer.But in the actual use, enter the rear portion heating surface because flue gas is straight-through in big cavity, so cooling-down effect is unsatisfactory.
Summary of the invention
The utility model provides a kind of gas radiation baffle plate that is used for the special-purpose waste heat boiler of rotary hearth furnace at the deficiencies in the prior art.
Gas radiation baffle plate in the special-purpose waste heat boiler of rotary hearth furnace, it is made up of tube panel, inlet header case, outlet collection case, spring rapping apparatus, described tube panel is the platy structure that is made of heat-exchange tube that contains water inlet and delivery port, the inlet header case is communicated with tube panel by the water inlet of tube panel, outlet collection case is communicated with tube panel by the delivery port of tube panel, and the spring rapping apparatus is arranged on the screen-wall of tube panel.
Described tube panel is by arranging the U template shape structure that forms before and after the U type pipe.
Spacing between the above-mentioned U type pipe equates.
The water inlet of above-mentioned tube panel is arranged at a upper lateral part of tube panel, and delivery port is arranged at the opposite side top of tube panel.
Described spring rapping apparatus is arranged at the top of tube panel delivery port one side.
Beneficial effect of the present invention is:
1, solves the efficiency of the radiation heat transfer of horizontal layout large radiation cavity, guaranteed to enter the cigarette temperature of rear portion heating surface.
2, solved the heatproof problem of baffle plate in high-temperature flue gas.
3, solved that the high-temperature flue gas dust can normally move a whole set of recovering system to the bonding influence of tube wall for a long time in the zinc-containing dust recovery system of rotary hearth furnace.
Description of drawings
Fig. 1 is the structural representation of the utility model in horizontal type waste heat boiler of zinc-containing dust recovery system of rotary hearth furnace;
Fig. 2 is a Facad structure schematic diagram of the present utility model;
Fig. 3 is a side structure schematic diagram of the present utility model;
Wherein: 1, exhaust-heat boiler flue gas import, 2, waste heat boiler radiation chamber cavity, 3, radiation baffle, 4, waste heat boiler rear portion heating surface, 5, the exhaust-heat boiler flue gas outlet, 6, tube panel, 7, the inlet header case, 8, outlet collection case, 9, the spring rapping apparatus.
The specific embodiment
Below in conjunction with accompanying drawing, the utility model structure and operation principle are described in further detail.
Embodiment
As Fig. 2, shown in Figure 3, gas radiation baffle plate in the special-purpose waste heat boiler of rotary hearth furnace, it is made up of tube panel 6, inlet header case 7, outlet collection case 8, spring rapping apparatus 9, described tube panel 6 is for containing the platy structure that is made of heat-exchange tube of water inlet and delivery port, inlet header case 7 is communicated with tube panel 6 by the water inlet of tube panel 6, outlet collection case 8 is communicated with tube panel 6 by the delivery port of tube panel 6, and spring rapping apparatus 9 is arranged on the screen-wall of tube panel 6.
As the preferred version of present embodiment, tube panel 6 is by arranging the U template shape structure that forms before and after the U type pipe.This U type pipe parallel connection can make circulating water flow increase greatly than common series circulation discharge, thereby can keep tube wall to be in lower temperature.
Spacing between the U type pipe of above-mentioned preferred version equates.The purpose that this scheme is based on the flue gas flow-disturbing designs, and this structure enters waste heat boiler rear portion heating surface 4 after gas is evenly distributed, thereby increases cooling-down effect.
The water inlet of above-mentioned preferred version is arranged at a upper lateral part of tube panel, and delivery port is arranged at the opposite side top of tube panel.This structure is based on the purpose that makes things convenient for equipment to install, debug, change and designs.
As the preferred version of present embodiment, spring rapping apparatus 9 is arranged at the top of tube panel delivery port one side.The spring rapping apparatus is arranged at this position can reach best rapping effect, and can reduce to minimum to the influence of equipment dependability the rapping action.
Operation principle of the present utility model is as follows: the high-temperature flue gas that rotary hearth furnace is discharged enters waste heat boiler radiation chamber cavity 2 from exhaust-heat boiler flue gas import 1, after 3 current-sharings of radiation plate washer, enter waste heat boiler rear portion heating surface 4, discharge from exhaust-heat boiler flue gas outlet 5 then.In this process, high-temperature flue gas respectively with waste heat boiler radiation chamber cavity 2, radiation baffle 3, waste heat boiler rear portion heating surface 4 in the water heat exchange, water generates steam in the heating tube makes heat boiler outlet 5 flue-gas temperatures drop to the requirement that post processing is used.In waste heat boiler radiation chamber cavity 2, increase radiation baffle 3, can make high-temperature flue gas stream in waste heat boiler radiation chamber cavity 2, turn to mixing, be full of whole waste heat boiler radiation chamber cavity 2, make waste heat boiler radiation chamber cavity 2 radiation heat transfers more abundant, avoided high-temperature flue gas to lead directly to the rear portion, and causing that waste heat boiler radiation chamber cavity 2 utilization rates are not high, the cigarette temperature drop hangs down and does not reach requirement.For avoiding adopting general plate washer can't satisfy the requirement of high temperature, radiation baffle 3 adopts the vaporization cooling structure, and its water circulation is: from inlet header case 7 → tube panel 6 → outlet collection case 8.Water circulation system is the part of the whole waste heat boiler circulatory system.Tube panel 6 pipes are outer to be high-temperature flue gas, is aqueous medium in the pipe, and high-temperature flue gas conducts heat by tube wall and lowers the temperature, and the tube wall heat is recycled water and takes away, and guarantees that radiation plate washer 3 wall surface temperatures maintain low-temperature condition, guarantee the reliable use of material.In addition, because the exhaust gas dust of zinc-containing dust recovery system of rotary hearth furnace technology cooling back bonds easily, therefore tube panel 6 is provided with spring rapping apparatus 9, can clear up the dust of bonding on the radiation baffle 3 timely.
Claims (5)
1. the gas radiation baffle plate in the special-purpose waste heat boiler of rotary hearth furnace, it is characterized in that, it is made up of tube panel, inlet header case, outlet collection case, spring rapping apparatus, described tube panel is the platy structure that is made of heat-exchange tube that contains water inlet and delivery port, the inlet header case is communicated with tube panel by the water inlet of tube panel, outlet collection case is communicated with tube panel by the delivery port of tube panel, and the spring rapping apparatus is arranged on the screen-wall of tube panel.
2. the gas radiation baffle plate in the special-purpose waste heat boiler of rotary hearth furnace as claimed in claim 1 is characterized in that, tube panel is by arranging the U template shape structure that forms before and after the U type pipe.
3. the gas radiation baffle plate in the special-purpose waste heat boiler of rotary hearth furnace as claimed in claim 2 is characterized in that the spacing between the U type pipe equates.
4. the gas radiation baffle plate in the special-purpose waste heat boiler of rotary hearth furnace as claimed in claim 2 is characterized in that the water inlet of above-mentioned tube panel is arranged at a upper lateral part of tube panel, and delivery port is arranged at the opposite side top of tube panel.
5. the gas radiation baffle plate in the special-purpose waste heat boiler of rotary hearth furnace as claimed in claim 1 is characterized in that the spring rapping apparatus is arranged at the top of tube panel delivery port one side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202244433U CN201475974U (en) | 2009-08-28 | 2009-08-28 | Smoke radiation baffle plate in special-purpose exhaust-heat boiler of rotary furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202244433U CN201475974U (en) | 2009-08-28 | 2009-08-28 | Smoke radiation baffle plate in special-purpose exhaust-heat boiler of rotary furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201475974U true CN201475974U (en) | 2010-05-19 |
Family
ID=42412225
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202244433U Expired - Lifetime CN201475974U (en) | 2009-08-28 | 2009-08-28 | Smoke radiation baffle plate in special-purpose exhaust-heat boiler of rotary furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201475974U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102410521A (en) * | 2011-11-17 | 2012-04-11 | 阳谷祥光铜业有限公司 | Waste heat boiler |
| CN107796226A (en) * | 2016-08-29 | 2018-03-13 | 中冶长天国际工程有限责任公司 | A kind of sintering deposit grate furnace cooling and residual heat using device and residual-heat utilization method |
-
2009
- 2009-08-28 CN CN2009202244433U patent/CN201475974U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102410521A (en) * | 2011-11-17 | 2012-04-11 | 阳谷祥光铜业有限公司 | Waste heat boiler |
| CN107796226A (en) * | 2016-08-29 | 2018-03-13 | 中冶长天国际工程有限责任公司 | A kind of sintering deposit grate furnace cooling and residual heat using device and residual-heat utilization method |
| CN107796226B (en) * | 2016-08-29 | 2023-07-25 | 中冶长天国际工程有限责任公司 | Sintering ore grate furnace cooling and waste heat utilization device and waste heat utilization method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: JINAN IRON AND STEEL CO LTD Free format text: FORMER OWNER: LAIWU IRON CO., LTD. Effective date: 20120329 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 271104 LAIWU, SHANDONG PROVINCE TO: 250101 JINAN, SHANDONG PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20120329 Address after: 250101 Ji'nan Industrial Road, Shandong, No. 21 Co-patentee after: Suzhou Hailu Heavy Industry Co., Ltd. Patentee after: Jinan Iron and Steel Co., Ltd. Address before: 271104, Xinxing Road, Gangcheng District, Shandong, Laiwu, 21 Co-patentee before: Suzhou Hailu Heavy Industry Co., Ltd. Patentee before: Laiwu Iron Co., Ltd. |
|
| C56 | Change in the name or address of the patentee |
Owner name: SHANDONG IRON + STEEL CO., LTD. Free format text: FORMER NAME: JI'NAN IRON + STEEL CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 250101 Ji'nan Industrial Road, Shandong, No. 21 Patentee after: Shandong Iron & Steel Group Co., Ltd. Patentee after: Suzhou Hailu Heavy Industry Co., Ltd. Address before: 250101 Ji'nan Industrial Road, Shandong, No. 21 Patentee before: Jinan Iron and Steel Co., Ltd. Patentee before: Suzhou Hailu Heavy Industry Co., Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20100519 |
|
| CX01 | Expiry of patent term |