CN102788363A - Waste heat boiler used for scrap copper smelting furnace - Google Patents

Waste heat boiler used for scrap copper smelting furnace Download PDF

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Publication number
CN102788363A
CN102788363A CN2012102903668A CN201210290366A CN102788363A CN 102788363 A CN102788363 A CN 102788363A CN 2012102903668 A CN2012102903668 A CN 2012102903668A CN 201210290366 A CN201210290366 A CN 201210290366A CN 102788363 A CN102788363 A CN 102788363A
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CN
China
Prior art keywords
waste heat
heat boiler
smelting furnace
composition brass
useless composition
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN2012102903668A
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Chinese (zh)
Inventor
杨平
宋冬根
廖祚洗
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China Nerin Engineering Co Ltd
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China Nerin Engineering Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by China Nerin Engineering Co Ltd filed Critical China Nerin Engineering Co Ltd
Priority to CN2012102903668A priority Critical patent/CN102788363A/en
Publication of CN102788363A publication Critical patent/CN102788363A/en
Pending legal-status Critical Current

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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00Technologies related to metal processing
    • Y02P10/25Process efficiency

Abstract

The invention provides a waste heat boiler. The waste heat boiler comprises a boiler body. A smoke channel is arranged in the boiler body; the smoke channel is provided with a smoke inlet and a smoke outlet; the boiler body consists of a membrane wall. A corrosion-resistant material layer is formed on the inner surface of the boiler body in the manner of build up welding from the smoke inlet for a scheduled length. Thus, according to the waste heat boiler used for a scrap copper smelting furnace, build up welding treatment is performed on the inner surface of the boiler body from the smoke inlet for the scheduled length so as to form a compact protective layer, therefore, the erosion effect of high-temperature smoke on the inner surface of the boiler body can be effectively prevented, so that the safe operation of the waste heat boiler is ensured, and the service life of the waste heat boiler is prolonged.

Description

The waste heat boiler that is used for useless composition brass smelting furnace
Technical field
The present invention relates to a kind of waste heat boiler that is used for useless composition brass smelting furnace.
Background technology
In order to satisfy the existing market demand, promptly utilize the copper scrap resource to refine smart copper products, the top-blown converter smelting technology is arisen at the historic moment, and waste heat boiler is one of key equipment in this technology.The flue-gas temperature that produces in the smelting non-ferrous metal process is high, contains great amount of heat energy, needs to reclaim this part heat energy usually.Waste heat boiler is commonly used to reclaim the heat energy in the high-temperature flue gas that smelting furnace (for example, top-blown converter) produces, and produces saturated vapor, has cooled off flue gas.Therefore both satisfy arts demand, and reclaimed heat energy again and be used for the production demand, practiced thrift the energy.
Yet; Be applied to the regeneration technology of copper scrap resource when smelting furnace; Be that it raw materials usedly is useless composition brass, some is an electronic waste, smelts in the flue gas that produces to have halogens and gases thereof such as a small amount of Cl, F, Br; And this type material causes high temperature corrosion in the inlet high-temperature region of waste heat boiler to metal heated face, has shortened the service life of waste heat boiler.
Summary of the invention
The application is the inventor based on discovery and understanding to the following fact: for the smelting furnace of the useless composition brass of melting; Some is an electronic waste because in the useless composition brass; Contain halogens such as Cl, F, Br etc. in the flue gas that in fusion process, produces; The material that contains these elements is in waste heat boiler, and especially high temperature corrosion can be caused to the body of heater heating surface in the high-temperature region of the entrance that links to each other with smelting furnace of waste heat boiler, thereby causes the waste heat boiler life-span to shorten dramatically.
And the inventor also recognizes: the flue gas of the useless composition brass of melting can generate the bioxin extremely toxic substance rapidly under appropriate environments, serious environment pollution damages public health.
The application is the melting characteristics that the inventor has taken all factors into consideration useless composition brass, under the situation that guarantees useless composition brass normal smelting, improves the life-span of waste heat boiler, practices thrift cost, and energy savings improves the feature of environmental protection.
The present invention one of is intended to solve the problems of the technologies described above at least to a certain extent or provides a kind of useful commerce to select at least.For this reason, one object of the present invention is to propose a kind of waste heat boiler that is used for useless composition brass smelting furnace of avoiding high temperature corrosion, increasing the service life.
Waste heat boiler according to the embodiment of the invention; Comprise: body of heater; Has exhaust gases passes in the said body of heater; Said exhaust gases passes has into mouth and outlet flue, and said body of heater is made up of fin panel casing, wherein from the inner surface of the body of heater of the said predetermined length that advances mouth, is formed with etch resistant material layer through built-up welding.
Thus; The waste heat boiler that is used for useless composition brass smelting furnace according to the embodiment of the invention; Through handling to form fine and close protective layer in the enterprising windrow weldering of inner surface from the body of heater of the predetermined length that advances mouth; Therefore can effectively prevent the corrosion function of high-temperature flue gas, guarantee the safe operation of waste heat boiler, prolong the service life of waste heat boiler the inner surface of body of heater.
In addition, the waste heat boiler that is used for useless composition brass smelting furnace according to the embodiment of the invention can also have following additional technical feature:
According to one embodiment of present invention, said etch resistant material layer is the nichrome layer.
According to one embodiment of present invention, the pressure of the cooling water in the said fin panel casing is at 0.5-1.25MPa.
According to one embodiment of present invention, said pressure is 1.25MPa.
According to one embodiment of present invention, said body of heater comprises: the ascent stage; Changeover portion, an end of said changeover portion link to each other with the upper end of said ascent stage and the lower end of said ascent stage forms the said mouth that advances; And descending branch, the upper end of said descending branch links to each other with the other end of said changeover portion and the lower end of said descending branch forms said outlet flue.
According to one embodiment of present invention, said changeover portion is an inverted V-shaped.
According to one embodiment of present invention, the vertical extension in said descending branch edge.
According to one embodiment of present invention, the said ascent stage comprises: the rising epimere, and said rising epimere extends along vertical, and the upper end of said rising epimere links to each other with said changeover portion; And entrance, the lower ends of the upper end of said entrance and said rising epimere, said entrance is obliquely installed.
According to one embodiment of present invention, said etch resistant material layer is formed on the inner surface of said entrance.
According to one embodiment of present invention, said entrance links to each other through the three-dimensional expansion device with said rising epimere.
According to one embodiment of present invention, also comprise the spring rapping apparatus, said rapping apparatus is located at outside the said body of heater, is used for removing the ashes on the said inboard wall of furnace body face through the outside wall surface of patting said body of heater.
According to one embodiment of present invention, the flue-gas temperature of said outlet flue is controlled to be more than 500 degrees centigrade.
According to one embodiment of present invention, the flue-gas temperature of said outlet flue is controlled to be 550-600 degree centigrade.
According to one embodiment of present invention; Also comprise drum; Said drum has feed water inlet, delivery port, refluxing opening that is used in drum, supplying water and the steam (vapor) outlet that is used to discharge the steam in the said drum, and said delivery port and said refluxing opening are communicated with the inner chamber of said fin panel casing through pipeline respectively.
According to one embodiment of present invention, the pipeline between said delivery port and the said fin panel casing is provided with circulating pump.
Additional aspect of the present invention and advantage part in the following description provide, and part will become obviously from the following description, or recognize through practice of the present invention.
Description of drawings
Above-mentioned and/or additional aspect of the present invention and advantage obviously with are easily understood becoming the description of embodiment from combining figs, wherein:
Fig. 1 is the front view according to the waste heat boiler of the embodiment of the invention; And
Fig. 2 is the left view according to the waste heat boiler of the embodiment of the invention.
The specific embodiment
Describe embodiments of the invention below in detail, the example of said embodiment is shown in the drawings, and wherein identical from start to finish or similar label is represented identical or similar elements or the element with identical or similar functions.Be exemplary through the embodiment that is described with reference to the drawings below, be intended to be used to explain the present invention, and can not be interpreted as limitation of the present invention.
In description of the invention; It will be appreciated that; The orientation of indications such as term " " center ", " vertically ", " laterally ", " length ", " width ", " thickness ", " on ", D score, " preceding ", " back ", " left side ", " right side ", " vertically ", " level ", " top ", " end " " interior ", " outward ", " clockwise ", " counterclockwise " or position relation are for based on orientation shown in the drawings or position relation; only be to describe with simplifying for the ease of describing the present invention; rather than the device or the element of indication or hint indication must have specific orientation, with specific azimuth configuration and operation, therefore can not be interpreted as limitation of the present invention.
In addition, term " first ", " second " only are used to describe purpose, and can not be interpreted as indication or hint relative importance or the implicit quantity that indicates indicated technical characterictic.Thus, one or more a plurality of these characteristics can be shown or impliedly comprised to the characteristic that is limited with " first ", " second " clearly.In description of the invention, the implication of " a plurality of " is two or more, only if clear and definite concrete qualification is arranged in addition.
In the present invention, only if clear and definite regulation and qualification are arranged in addition, broad understanding should be done in terms such as term " installation ", " linking to each other ", " connection ", " fixing ", for example, can be to be fixedly connected, and also can be to removably connect, or connect integratedly; Can be mechanical connection, also can be to be electrically connected; Can be directly to link to each other, also can link to each other indirectly through intermediary, can be the connection of two element internals.For those of ordinary skill in the art, can understand above-mentioned term concrete implication in the present invention as the case may be.
In the present invention; Only if clear and definite regulation and qualification are arranged in addition; First characteristic second characteristic it " on " or D score can comprise that first and second characteristics directly contact, can comprise that also first and second characteristics are not directly contacts but through the contact of the additional features between them.And, first characteristic second characteristic " on ", " top " and " above " comprise first characteristic directly over second characteristic and oblique upper, or only represent that the first characteristic level height is higher than second characteristic.First characteristic second characteristic " under ", " below " and " below " comprise first characteristic directly over second characteristic and oblique upper, or only represent that the first characteristic level height is less than second characteristic.
With reference to figure 1 and Fig. 2 the waste heat boiler that is used for useless composition brass smelting furnace according to the embodiment of the invention is described below.
Description comprises according to the waste heat boiler that the embodiment of the invention is used for useless composition brass smelting furnace: body of heater 1.Have exhaust gases passes in the body of heater 1, exhaust gases passes has into mouth 11 and outlet flue 12, and body of heater 1 is made up of fin panel casing.Cooling water flows in the pattern water-cooling wall, with to cooling off from advancing the high-temperature flue gas that mouth 11 gets into and discharge from outlet flue 12.
(being on the inwall of pattern water-cooling wall) is formed with etch resistant material layer through built-up welding from the inner surface of the body of heater 1 of the predetermined length that advances mouth 11.Owing to be formed with etch resistant material layer on the inner surface to body of heater 1 in the highest zone of temperature, therefore, effectively prevent the corrosion function of high-temperature flue gas.In addition, this predetermined length can suitably be adjusted as the case may be, to satisfy under the different operating modes farthest the protection to body of heater 1.
Preferably, etch resistant material layer is the nichrome layer, therefore can be to forming the protective layer of erosion-resisting densification on the inner surface of body of heater 1.
Thus; The waste heat boiler that is used for useless composition brass smelting furnace according to the embodiment of the invention; Through handling to form fine and close protective layer in the enterprising windrow weldering of inner surface from the body of heater 1 of the predetermined length that advances mouth 11; Therefore can effectively prevent the corrosion function of high-temperature flue gas, guarantee the safe operation of waste heat boiler, prolong the service life of waste heat boiler the inner surface of body of heater 1.
According to some embodiments of the present invention, as depicted in figs. 1 and 2, the waste heat boiler that is used for useless composition brass smelting furnace also comprises drum 2.Drum 2 has feed water inlet, delivery port 21, refluxing opening 22 that is used in drum, supplying water and the steam (vapor) outlet that is used to discharge the steam in the drum.Delivery port 21 is communicated with the inner chamber of fin panel casing through pipeline respectively with refluxing opening 22.
On the pipeline between delivery port 21 and the fin panel casing, be provided with circulating pump,, improve cooling effect so that cooling water is formed forced circulation.
Body of heater 1 comprises: ascent stage 13, changeover portion 14 and descending branch 15.One end of changeover portion 14 links to each other with the upper end of ascent stage 13 and the lower end of ascent stage 13 forms into mouth 11.The upper end of descending branch 15 links to each other with the other end of changeover portion 14 and the lower end of descending branch 15 forms outlet flue 12.Changeover portion 14 is an inverted V-shaped, so that be communicated with ascent stage 13 and descending branch 15.Descending branch 15 is extended along vertical.Ascent stage 13 comprises: rising epimere 131 and entrance 132.Rising epimere 131 extends along vertical, and the upper end of rising epimere 131 links to each other with changeover portion 14.The lower ends of the upper end of entrance 132 and rising epimere 131.Entrance is obliquely installed, the top-blown converter (28 ° of horizontal sextant angles) that is obliquely installed with cooperation.
Entrance 132 links to each other through the three-dimensional expansion device with rising epimere 131, to guarantee the sealing of junction.
Etch resistant material layer can be formed on the inner surface of entrance 132; Because entrance 132 contacts with the high-temperature flue gas that just gets into exhaust gases passes; Therefore through on the inner surface of entrance 132, forming etch resistant material layer, can effectively prevent erosion to body of heater 1.
According to other embodiment of the present invention, the operating pressure of the cooling water in the fin panel casing is controlled at 0.5-1.25MPa.Through the operating pressure of control cooling water, promptly control the temperature of cooling water, come the control valve wall temperature.
Thus,, can effectively control the temperature of cooling water, thereby reduce the temperature of body of heater 1 metal surface, finally reduce the inside corrosion scope of flue gas body of heater 1 through control cooling water operating pressure.Preferably, the operating pressure of cooling water is set at 1.25MPa, has so both satisfied arts demand, has reduced the temperature of cooling water simultaneously relatively effectively.
The waste heat boiler that is used for useless composition brass smelting furnace of the embodiment of the invention also comprises spring rapping apparatus 3.Rapping apparatus 3 is located at the outside of body of heater 1, is used for removing the ashes on body of heater 1 inner surface through the outside wall surface of patting body of heater 1.
Through the deashing of rapping apparatus 3, the temperature of the metal surface of body of heater 1 has remarkable reduction, therefore can reach equally to reduce the inner metal surface corrosion scope of flue gas to body of heater 1.
In addition, the flue-gas temperature of outlet flue 12 should be controlled at more than 500 ℃.The inventor recognizes: the flue gas of the useless composition brass of melting can generate bioxin violent in toxicity, particularly temperature rapidly between 200-500 ℃ under suitable temperature.Therefore, the flue-gas temperature of outlet flue 12 is controlled at outside this scope, can effectively prevents the generation of bioxin.Preferably, the flue-gas temperature at outlet flue 12 places is controlled to be 550-600 ℃.
In order to reduce the generation of bioxin, protect environment, the flue gas of discharging from waste heat boiler can reduce rapidly, shortens flue gas as far as possible and is detained the time in the 200-500 ℃ of scope, can quenching apparatus be set at outlet flue 12 places, for example the water-cooled spray tower.
Other formations of waste heat boiler that are used for useless composition brass smelting furnace according to the embodiment of the invention can be well known by persons skilled in the art, repeat no more at this.
In the description of this specification, the description of reference term " embodiment ", " some embodiment ", " example ", " concrete example " or " some examples " etc. means the concrete characteristic, structure, material or the characteristics that combine this embodiment or example to describe and is contained at least one embodiment of the present invention or the example.In this manual, the schematic statement to above-mentioned term not necessarily refers to identical embodiment or example.And concrete characteristic, structure, material or the characteristics of description can combine with suitable manner in any one or more embodiment or example.
Although illustrated and described embodiments of the invention above; It is understandable that; The foregoing description is exemplary; Can not be interpreted as limitation of the present invention, those of ordinary skill in the art can change the foregoing description under the situation that does not break away from principle of the present invention and aim within the scope of the invention, modification, replacement and modification.

Claims (15)

1. waste heat boiler that is used for useless composition brass smelting furnace; It is characterized in that; Comprise: body of heater, have exhaust gases passes in the said body of heater, said exhaust gases passes has into mouth and outlet flue; Said body of heater is made up of fin panel casing, wherein from the inner surface of the body of heater of the said predetermined length that advances mouth, is formed with etch resistant material layer through built-up welding.
2. the waste heat boiler that is used for useless composition brass smelting furnace according to claim 1, it is characterized in that: said etch resistant material layer is the nichrome layer.
3. the waste heat boiler that is used for useless composition brass smelting furnace according to claim 1 is characterized in that: the pressure of the cooling water in the said fin panel casing is at 0.5-1.25MPa.
4. the waste heat boiler that is used for useless composition brass smelting furnace according to claim 3, it is characterized in that: said pressure is 1.25MPa.
5. the waste heat boiler that is used for useless composition brass smelting furnace according to claim 1, it is characterized in that: said body of heater comprises:
Ascent stage;
Changeover portion, an end of said changeover portion link to each other with the upper end of said ascent stage and the lower end of said ascent stage forms the said mouth that advances; With
Descending branch, the upper end of said descending branch link to each other with the other end of said changeover portion and the lower end of said descending branch forms said outlet flue.
6. the waste heat boiler that is used for useless composition brass smelting furnace according to claim 5, it is characterized in that: said changeover portion is an inverted V-shaped.
7. the waste heat boiler that is used for useless composition brass smelting furnace according to claim 6 is characterized in that: said descending branch is extended along vertical.
8. the waste heat boiler that is used for useless composition brass smelting furnace according to claim 6, it is characterized in that: the said ascent stage comprises:
The rising epimere, said rising epimere extends along vertical, and the upper end of said rising epimere links to each other with said changeover portion; With
Entrance, the lower ends of the upper end of said entrance and said rising epimere, said entrance is obliquely installed.
9. the waste heat boiler that is used for useless composition brass smelting furnace according to claim 8, it is characterized in that: said etch resistant material layer is formed on the inner surface of said entrance.
10. the waste heat boiler that is used for useless composition brass smelting furnace according to claim 8, it is characterized in that: said entrance links to each other through the three-dimensional expansion device with said rising epimere.
11. the waste heat boiler that is used for useless composition brass smelting furnace according to claim 1; It is characterized in that: also comprise the spring rapping apparatus; Said rapping apparatus is located at outside the said body of heater, is used for removing the ashes on the said inboard wall of furnace body face through patting the outside wall surface of said body of heater.
12. the waste heat boiler that is used for useless composition brass smelting furnace according to claim 1, it is characterized in that: the flue-gas temperature of said outlet flue is controlled to be more than 500 degrees centigrade.
13. the waste heat boiler that is used for useless composition brass smelting furnace according to claim 12, it is characterized in that: the flue-gas temperature of said outlet flue is controlled to be 550-600 degree centigrade.
14. according to each described waste heat boiler that is used for useless composition brass smelting furnace among the claim 1-13; It is characterized in that: also comprise drum; Said drum has feed water inlet, delivery port, refluxing opening that is used in drum, supplying water and the steam (vapor) outlet that is used to discharge the steam in the said drum, and said delivery port and said refluxing opening are communicated with the inner chamber of said fin panel casing through pipeline respectively.
15. the waste heat boiler that is used for useless composition brass smelting furnace according to claim 14, it is characterized in that: the pipeline between said delivery port and the said fin panel casing is provided with circulating pump.
CN2012102903668A 2012-08-15 2012-08-15 Waste heat boiler used for scrap copper smelting furnace Pending CN102788363A (en)

Priority Applications (1)

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CN2012102903668A CN102788363A (en) 2012-08-15 2012-08-15 Waste heat boiler used for scrap copper smelting furnace

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Application Number Priority Date Filing Date Title
CN2012102903668A CN102788363A (en) 2012-08-15 2012-08-15 Waste heat boiler used for scrap copper smelting furnace

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104456497A (en) * 2014-11-13 2015-03-25 中国瑞林工程技术有限公司 Exhaust-heat boiler
CN104528768A (en) * 2014-12-30 2015-04-22 陕西杨凌一丰农业设备科技有限公司 Potassium sulphate reaction furnace

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005512012A (en) * 2001-12-13 2005-04-28 オウトクンプ オサケイティオ ユルキネン Method and apparatus for increasing capacity of waste heat boiler in metallurgy smelting furnace
CN2910949Y (en) * 2006-06-12 2007-06-13 江阴海陆冶金设备制造有限公司 Surface hot spraying type evaporated cooling flue of steelmaking converter
CN101451703A (en) * 2007-11-28 2009-06-10 中国恩菲工程技术有限公司 Exhaust-heating boiler and furnace body thereof
CN201407634Y (en) * 2008-12-17 2010-02-17 中天环保产业(集团)有限公司 Heat recovery boiler with soot deposit prevention and corrosion-resistant structure
CN202733938U (en) * 2012-08-15 2013-02-13 中国瑞林工程技术有限公司 Waste heat boiler for scrap copper smelting furnace

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005512012A (en) * 2001-12-13 2005-04-28 オウトクンプ オサケイティオ ユルキネン Method and apparatus for increasing capacity of waste heat boiler in metallurgy smelting furnace
CN2910949Y (en) * 2006-06-12 2007-06-13 江阴海陆冶金设备制造有限公司 Surface hot spraying type evaporated cooling flue of steelmaking converter
CN101451703A (en) * 2007-11-28 2009-06-10 中国恩菲工程技术有限公司 Exhaust-heating boiler and furnace body thereof
CN201407634Y (en) * 2008-12-17 2010-02-17 中天环保产业(集团)有限公司 Heat recovery boiler with soot deposit prevention and corrosion-resistant structure
CN202733938U (en) * 2012-08-15 2013-02-13 中国瑞林工程技术有限公司 Waste heat boiler for scrap copper smelting furnace

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104456497A (en) * 2014-11-13 2015-03-25 中国瑞林工程技术有限公司 Exhaust-heat boiler
CN104456497B (en) * 2014-11-13 2016-08-17 中国瑞林工程技术有限公司 Waste heat boiler
CN104528768A (en) * 2014-12-30 2015-04-22 陕西杨凌一丰农业设备科技有限公司 Potassium sulphate reaction furnace

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