CN104258752A - Smoke mixing device and method - Google Patents
Smoke mixing device and method Download PDFInfo
- Publication number
- CN104258752A CN104258752A CN201410516682.1A CN201410516682A CN104258752A CN 104258752 A CN104258752 A CN 104258752A CN 201410516682 A CN201410516682 A CN 201410516682A CN 104258752 A CN104258752 A CN 104258752A
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- flue gas
- gas
- mixing
- smoke
- mixing drum
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Abstract
The invention discloses a smoke mixing device and method. The device comprises smoke inlets, smoke outlets, a mixing cylinder, a cylinder division plate, smoke baffles and an ash bucket, wherein a plurality of smoke inlets and smoke outlets are formed above the mixing cylinder, the smoke inlets and the smoke outlets are connected with process smoke pipelines through flanges, the vertical cylinder division plate is arranged in the inner cavity of the mixing cylinder and divides the mixing cylinder into two gas mixing chambers of which the bottoms are communicated with each other, a plurality of smoke baffles are arranged on the inner wall of the mixing cylinder and the surface of the cylinder division plate, and the ash bucket is arranged below the mixing cylinder. According to the method, smoke collides with the surfaces of the smoke baffles for multiple times in the mixing cylinder, smoke fluid forms turbulent flow, and smoke is well mixed in a longer smoke passage in the mixing cylinder. The smoke mixing device and method can realize uniform mixing of smoke, realize preliminary collection of dust in the smoke and well solve the problem of smoke blockage.
Description
Technical field
The present invention relates to a kind of flue gas mixing arrangement and method of field of metallurgy, particularly relate to cupper smelting smelting furnace, converting furnace cooling, the mixing of flue gas after dedusting, be also applicable to the mixing of other classification flue gas.
Background technology
In current copper smelt industry production process, relate to pyrolytic semlting facility, as technique stove smelting furnace and converting furnace, the high temperature that stove produces, ash-laden gas through cooling, after dedusting, because of the SO containing high concentration in flue gas
2gas (volume fraction about 20%), need send sulfate system process.Before being sent to sulfate system process, usually needing mixed smelting stove and converting furnace flue gas, is generally adopt the mode mixed in flue.
May be there is following problem as adopted the mode mixed in flue in technique stove smelting furnace, the converting furnace flue gas after cooling, dedusting: the mixing of (1) flue gas is uneven; (2) mixed flue gas resistance is large; (3) flue dust in mixed flue gas settles down blocking pipe in the duct; (4) impact of uneven flue gas on sulfate system is mixed larger.
Summary of the invention
For the problems referred to above, the object of the present invention is to provide a kind of structure simple, reliable flue gas mixing arrangement and mixed method.Both the efficient mixing of two or more flue gas can have been realized, make composition, temperature, the pressure uniform of flue gas after mixing, the primary collection of entrained with dust in flue gas can also be realized, solve flue dust blockage problem preferably, be conducive to the subsequent treatment mixing rear flue gas.
For achieving the above object, the present invention is achieved through the following technical solutions:
A kind of flue gas mixing arrangement, comprise gas approach, exhanst gas outlet, mixing drum, cylindrical shell dividing plate, gas baffle and ash bucket, it is characterized in that: above described mixing drum, be provided with some gas approach and an exhanst gas outlet, gas approach and exhanst gas outlet are by Flange joint technique flue, described mixing drum inner chamber is provided with vertical cylindrical shell dividing plate and mixing drum is separated into the mixed gas chamber that two bottoms communicate, described mixing drum inwall and cylindrical shell baffle surface are provided with multiple gas baffle, are provided with ash bucket below described mixing drum.
Preferably, described gas approach is at least two, and gas approach can be arranged according to actual conditions, can realize the efficient mixing of multiple flue gas.
Preferably, described gas baffle is set to tilt and and in miter angle between mixing drum inwall and cylindrical shell dividing plate along airflow direction at mixing drum inwall and cylindrical shell baffle surface.
Preferably, described mixing drum radial section is circular.
Preferably, the exit of described ash bucket is provided with hand operated gate valve and Star-like unloader.
Preferably, the side place of described ash bucket bottom is provided with manhole.
The invention also discloses a kind of flue gas mixed method, comprise following step:
Step 1, multiply flue gas enter the mixing drum of mixing arrangement by gas approach;
Step 2, the flue gas of mixing drum that enters become suddenly large due to cross section of fluid channel, and flue gas flow rate reduces, and multiple impacts occurs the gas baffle surface in two chambers of flue gas medium and mixing drum, and flue gas fluid forms turbulent flow, and promotion flue gas mixes further;
After step 3, mixing, flue gas is discharged by exhanst gas outlet, and in flue gas medium, the part dust of entrained with settles down and exported by ash bucket and discharges under the obstruct of gas baffle and the effect of gravity.
Beneficial effect of the present invention is:
1, flue gas mixing arrangement manufacture craft of the present invention is relatively simple, construction install convenience;
2, both can realize the mixing of flue gas, the primary collection of dust in flue gas can be realized again;
3, applicability is wide, can be used for the mixing of multiple flue gas;
4, the drag losses of device is little, good mixing effect;
5, floor space is little, flue configuration Relatively centralized.
Accompanying drawing explanation
Fig. 1 is the structural representation of flue gas mixing arrangement described in the embodiment of the present invention;
Fig. 2 is the left view of Fig. 1;
Fig. 3 is the top view of Fig. 1.
Detailed description of the invention
Below in conjunction with Figure of description, the present invention will be further described.
As shown in Figure 1 to Figure 3, a kind of flue gas mixing arrangement described in the embodiment of the present invention, at least comprises gas approach 2, exhanst gas outlet 3, mixing drum 4, cylindrical shell dividing plate 5, gas baffle 6 and ash bucket 7, wherein:
Gas approach 2 and exhanst gas outlet 3 is provided with above described mixing drum 4.The port of described gas approach 2 and exhanst gas outlet 3 is respectively by Flange joint technique flue 1.
Described mixing drum 4 inner chamber is provided with cylindrical shell dividing plate 5, described mixing drum inwall and cylindrical shell baffle surface are provided with multiple gas baffle 6, gas baffle 6 on described mixing drum inwall and cylindrical shell dividing plate is arranged according to flow of flue gas direction, make the flue gas that flows through by realizing after gas baffle ejecting along close to horizontal direction, described gas baffle 6 is set to tilt and and in miter angle between mixing drum 4 inwall and cylindrical shell dividing plate 5 along airflow direction at mixing drum inwall and cylindrical shell baffle surface.Gas baffle 6 and mixing drum 4 inwall are arranged in suitable miter angle as shown in fig. 1, and gas baffle 6 and cylindrical shell dividing plate 5 surface are arranged in anti-miter angle, and each gas baffle is crisscross arranged with the mixed effect strengthening flue gas medium of trying one's best.
Be provided with ash bucket 7 below described mixing drum 4, the exit of described ash bucket is provided with Star-like unloader 10 and ash-unloading tube 11, regularly opens Star-like unloader and unloads ash.Be provided with hand operated gate valve 9 on Star-like unloader top, cut off for flue dust during overhaul of the equipments.
The side place of described ash bucket bottom is provided with manhole 8, for the maintenance of mixing arrangement inside.
After technique stove smelting furnace and converting furnace cooling, flue gas after dedusting enter mixing drum, Homogeneous phase mixing under the effect of gas baffle, mixed flue gas is discharged from exhanst gas outlet and is sent to sulfate system process.
Further explanation is explained as the embodiment of the present invention:
Described flue gas mixing arrangement is arranged on ground by steel bracket 12.
Described mixing drum 4 radial section is made into circle, adopts such design conveniently to make and to install.
The bus of described ash bucket 7 and horizontal direction, in arranging close to 70 degree of angles, adopt such being designed with to be beneficial to the discharge of flue dust.
The course of work of the present invention is:
(temperature about 300 DEG C, pressure is about 500Pa to flue gas after the cooling of cupper smelting smelting furnace, converting furnace, dedusting, and dust content is no more than 500mg/Nm
3) enter gas mixing device by gas approach and mix.The flue gas entered becomes suddenly large due to cross section of fluid channel, and flue gas flow rate reduces, and flue gas medium, on gas baffle surface, multiple impacts occurs, and makes flue gas fluid form turbulent flow and promotes mixing.Mixing drum is divided into two equal-sized flue gas flow channels by cylindrical shell dividing plate, adds the incorporation time of each flue gas medium, and mixed flue gas is discharged by exhanst gas outlet and is sent to sulfate system process.In flue gas medium, the part dust of entrained with settles down and is exported by ash bucket and discharges under the obstruct of gas baffle and the effect of gravity.
Above content is in conjunction with concrete superior embodiment further description made for the present invention, can not determine that specific embodiment of the invention is confined to these explanations.Anyly be familiar with those skilled in the art in the technical scope that the present invention discloses, the change that can expect easily or replacement, all should be encompassed within protection scope of the present invention.Therefore, the protection domain that protection scope of the present invention should define with claim is as the criterion.
Claims (8)
1. a flue gas mixing arrangement, comprise gas approach, exhanst gas outlet, mixing drum, cylindrical shell dividing plate, gas baffle and ash bucket, it is characterized in that: above described mixing drum, be provided with some gas approach and an exhanst gas outlet, gas approach and exhanst gas outlet are by Flange joint technique flue, described mixing drum inner chamber is provided with vertical cylindrical shell dividing plate and mixing drum is separated into the mixed gas chamber that two bottoms communicate, described mixing drum inwall and cylindrical shell baffle surface are provided with multiple gas baffle, are provided with ash bucket below described mixing drum.
2. a kind of flue gas mixing arrangement according to claim 1, is characterized in that, described gas approach is at least two.
3. a kind of flue gas mixing arrangement according to claim 1, is characterized in that, described gas baffle is set to tilt and and in miter angle between mixing drum inwall and cylindrical shell dividing plate along airflow direction at mixing drum inwall and cylindrical shell baffle surface.
4. a kind of flue gas mixing arrangement according to claim 1, is characterized in that, described mixing drum radial section is circular.
5. a kind of flue gas mixing arrangement according to claim 1, is characterized in that, the exit of described ash bucket is provided with hand operated gate valve and Star-like unloader.
6. a kind of flue gas mixing arrangement according to claim 1, is characterized in that, the side place of described ash bucket bottom is provided with manhole.
7. a kind of flue gas mixing arrangement according to claim 1, is characterized in that, also comprises for fixing steel bracket.
8. a flue gas mixed method, uses the flue gas mixing arrangement described in the arbitrary claim of claim 1-7, it is characterized in that, comprise following step:
Step 1, multiply flue gas enter the mixing drum of mixing arrangement by gas approach;
Step 2, the flue gas of mixing drum that enters become suddenly large due to cross section of fluid channel, and flue gas flow rate reduces, and multiple impacts occurs the gas baffle surface in two chambers of flue gas medium and mixing drum, and flue gas fluid forms turbulent flow, and promotion flue gas mixes further;
After step 3, mixing, flue gas is discharged by exhanst gas outlet, and in flue gas medium, the part dust of entrained with settles down and exported by ash bucket and discharges under the obstruct of gas baffle and the effect of gravity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410516682.1A CN104258752B (en) | 2014-09-30 | 2014-09-30 | A kind of flue gas mixing arrangement and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410516682.1A CN104258752B (en) | 2014-09-30 | 2014-09-30 | A kind of flue gas mixing arrangement and method |
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| Publication Number | Publication Date |
|---|---|
| CN104258752A true CN104258752A (en) | 2015-01-07 |
| CN104258752B CN104258752B (en) | 2016-09-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410516682.1A Active CN104258752B (en) | 2014-09-30 | 2014-09-30 | A kind of flue gas mixing arrangement and method |
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| CN (1) | CN104258752B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109289514A (en) * | 2018-11-28 | 2019-02-01 | 长沙凯天工研院环保服务有限公司 | A kind of SCR denitration flue gas mixer and its system |
| WO2019114138A1 (en) * | 2017-12-12 | 2019-06-20 | 中国科学院过程工程研究所 | Flue gas mixing device and method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1100341A (en) * | 1993-06-30 | 1995-03-22 | 英国石油化学品有限公司 | Method of mixing heterogeneous systems |
| EP0785975B1 (en) * | 1994-10-27 | 2002-07-03 | Isentropic Systems Ltd. | Improvements in the combustion and utilisation of fuel gases |
| CN202715368U (en) * | 2012-07-20 | 2013-02-06 | 宝山钢铁股份有限公司 | Flue gas mixer |
| CN204107354U (en) * | 2014-09-30 | 2015-01-21 | 中国瑞林工程技术有限公司 | A kind of flue gas mixing arrangement |
-
2014
- 2014-09-30 CN CN201410516682.1A patent/CN104258752B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1100341A (en) * | 1993-06-30 | 1995-03-22 | 英国石油化学品有限公司 | Method of mixing heterogeneous systems |
| EP0785975B1 (en) * | 1994-10-27 | 2002-07-03 | Isentropic Systems Ltd. | Improvements in the combustion and utilisation of fuel gases |
| CN202715368U (en) * | 2012-07-20 | 2013-02-06 | 宝山钢铁股份有限公司 | Flue gas mixer |
| CN204107354U (en) * | 2014-09-30 | 2015-01-21 | 中国瑞林工程技术有限公司 | A kind of flue gas mixing arrangement |
Non-Patent Citations (1)
| Title |
|---|
| D.W希尔，T.波韦尔: "《不分光红外线气体分析》", 31 August 1975 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019114138A1 (en) * | 2017-12-12 | 2019-06-20 | 中国科学院过程工程研究所 | Flue gas mixing device and method |
| EP3666372A4 (en) * | 2017-12-12 | 2021-10-13 | Institute Of Process Engineering, Chinese Academy Of Sciences | Flue gas mixing device and method |
| CN109289514A (en) * | 2018-11-28 | 2019-02-01 | 长沙凯天工研院环保服务有限公司 | A kind of SCR denitration flue gas mixer and its system |
| CN109289514B (en) * | 2018-11-28 | 2023-11-17 | 长沙凯天工研院环保服务有限公司 | SCR denitration flue gas blender and system thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104258752B (en) | 2016-09-28 |
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Address after: 330031 No. 888, Qian Hu Road, Hongjiao Island, Nanchang, Jiangxi. Patentee after: China ruim engineering technology Limited by Share Ltd Address before: 330096 No. 888, Qian Hu Road, Hongjiao Island, Nanchang, Jiangxi. Patentee before: China Nerin Engineering Co., Ltd. |