CN207507169U - A kind of device collected dry-process rotory kiln kiln tail dust and reduce kiln tail exhaust emissions - Google Patents

A kind of device collected dry-process rotory kiln kiln tail dust and reduce kiln tail exhaust emissions Download PDF

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Publication number
CN207507169U
CN207507169U CN201721377555.3U CN201721377555U CN207507169U CN 207507169 U CN207507169 U CN 207507169U CN 201721377555 U CN201721377555 U CN 201721377555U CN 207507169 U CN207507169 U CN 207507169U
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China
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dust
kiln
wind turbine
kiln tail
dust chamber
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CN201721377555.3U
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Chinese (zh)
Inventor
张威峰
魏汉中
王常蕾
王永齐
刘荣明
王倩
贾立颖
朱代漫
揣丹
胡国辉
黄可淼
许琛
全小康
李炳山
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Beikuang magnetic materials (Fuyang) Co., Ltd.
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Materials & Technology Co Ltd
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Abstract

The utility model is related to a kind of device collected dry-process rotory kiln kiln tail dust and reduce kiln tail exhaust emissions, described device includes：Kiln tail case is located at turn around the tail portion of kiln and is connect with seal of rotary kiln；Dust chamber is in fluid communication positioned at the top of the kiln tail case and with the kiln tail case；First wind turbine, the air inlet of first wind turbine are connect by the first intake stack with dust chamber；Second wind turbine, by the second intake stack and air communication, the exhaust outlet of second wind turbine is connect the air inlet of second wind turbine by the second exhaust duct with dust chamber；With wet method dust and gas processing unit, the wet method dust and gas processing unit is connect with the exhaust outlet of the first wind turbine by the first exhaust duct.The utility model is simple in structure, kiln tail tail gas and dust is effectively inhibited to leak outside for negative pressure in kiln tail case；It is tiny structure in dust chamber, tiny structure causes in most of dust freely falling body to dust chamber, can reach the effect collected kiln tail dust and reduce kiln tail tail gas and dust emission.

Description

A kind of device collected dry-process rotory kiln kiln tail dust and reduce kiln tail exhaust emissions
Technical field
The utility model belongs to the technical field of rotary kiln, is related to the dedusting technology of rotary kiln more particularly to a kind of collection Dry-process rotory kiln kiln tail dust and the device for reducing kiln tail exhaust emissions.
Background technology
In magnetic material industry, rotary kiln is main production equipments in production process, is mutually chemically reacted for sintering into Journey occupies critically important status.Production magnetic material Preburning material mainly has two kinds of rotary kilns of dry and wet at present.Dry method is turned round Kiln production line because of the limitation of feed arrangement, causes rotary kiln to have the place connected with outside.Although air-introduced machine can be big portion Air quantity and dust is divided to introduce follow-up dust pelletizing system, still, because of inertia and pressure, kiln tail feeding part is caused to have part dust And hot exhaust gas comes out, and pollutes workshop condition and causes material waste.
Chinese patent CN104236305B is disclosed causes dust to slow down using the sealing net installed on steel frame construction, dust Due to gravitational settling, so as to achieve the purpose that dedusting, but it is only effective for the dust of 40~200 mesh (75-380 μm) to grain size, The smaller dust of grain size can be discharged into air, pollute environment.
Utility model content
The utility model provides a kind of device collected dry-process rotory kiln kiln tail dust and reduce kiln tail exhaust emissions, profit With wind turbine so that being negative pressure (negative pressure is between 1000-2000Pa) in kiln tail case, in dust chamber being that (negative pressure is in 10- for tiny structure Between 100Pa), so as to reach collection dry-process rotory kiln kiln tail dust (magnetic material) simultaneously and reduce kiln tail tail gas and dust row The effect put.
To achieve these goals, the utility model provides a kind of collection dry-process rotory kiln kiln tail dust and reduces kiln tail The device of exhaust emissions, described device include：
Kiln tail case is located at turn around the tail portion of kiln and is connect with seal of rotary kiln；
Dust chamber is in fluid communication positioned at the top of the kiln tail case and with the kiln tail case；
First wind turbine, the air inlet of first wind turbine are connect by the first intake stack with dust chamber；
Second wind turbine, the air inlet of second wind turbine pass through the second intake stack and air communication, second wind turbine Exhaust outlet connect by the second exhaust duct with dust chamber；With
Wet method dust and gas processing unit, the wet method dust and gas processing unit and the exhaust outlet of first wind turbine pass through first row Wind pipeline connects.
Preferably, the wet method dust and gas processing unit is pocked stone pagoda.
Preferably, the dust chamber is arranged on the side of the feed inlet of the rotary kiln；The dust chamber and the kiln tail Case is provided with the feed pipe being connected between the feed inlet and the rotary kiln, the feed pipe pass through the dust chamber with The inside of kiln tail case.
Preferably, the air inlet of first wind turbine is connected by the top of the first intake stack and dust chamber；And/or institute The exhaust outlet for stating the second wind turbine is connected by the side of the second exhaust duct and dust chamber.
Preferably, the dust chamber is made of babinet and the sealant being formed in outside babinet.
Preferably, the babinet is made of high-temperature refractory；And/or the sealant is sealed by stainless steel plate and is formed.
Preferably, the length of the babinet is 1m, width 1m, and height is 2m.
Preferably, the thickness of the sealant is 3-4mm.
Preferably, first wind turbine is the negative-pressure air fan of resistance to acid centrifuging；And/or second wind turbine is forced draft machine.
Preferably, the peak suction of first wind turbine is 8000-10000Pa.
The device of the utility model has following advantageous effect：
(1) the utility model so that negative pressure reaches 1000-2000Pa in kiln tail case using wind turbine so that kiln tail tail gas and powder Dirt does not leak outside, and achievees the effect that reduce kiln tail tail gas and dust uncontrollable discharge.
(2) the utility model causes to make kiln tail for tiny structure (negative pressure 10-100Pa), tiny structure in dust chamber using wind turbine Tail gas and fraction dust are discharged into subsequent wet method dust and gas processing unit by wind turbine, and most of dust is freely fallen because of tiny structure In body to dust chamber, achieve the effect that collect dust (kiln tail magnetic material)；The utility model device can be according to different raw materials Dust adjusts tiny structure size in dust chamber, so as to more effectively realize in raw material dust freely falling body to dust chamber.
(3) the utility model is simple in structure, and using the device dedusting, good dedusting effect can be realized to little particle dust Collection (or even the dust of as low as 0.6 μm of granularity can be collected), efficiency of dust collection is up to 100%, exhaust emissions compliance rate 100%.
Description of the drawings
The utility model attached drawing only provides for the purpose of illustration, in figure the ratio of each component not necessarily with actual product one It causes.
Fig. 1 is the structure diagram of the utility model.
In figure：1：Rotary kiln；2：Kiln tail case；3：Dust chamber；4：First wind turbine；5：Wet method dust and gas processing unit；6：Charging Mouthful；7：Feed pipe；8：Second wind turbine；9：First intake stack；10：First exhaust duct；11：Second intake stack；12：The Two exhaust ducts.
Specific embodiment
Purpose, technical scheme and advantage to make the utility model embodiment are clearer, new below in conjunction with this practicality Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched The embodiment stated is the part of the embodiment of the utility model, instead of all the embodiments.Based on the reality in the utility model Apply example, those of ordinary skill in the art's all other embodiments obtained under the premise of creative work is not made, all Belong to the range of the utility model protection.
As shown in Figure 1, the utility model provides a kind of collection dry-process rotory kiln kiln tail dust and reduces kiln tail tail gas row The device put, including kiln tail case 2, dust chamber 3, the first wind turbine 4, the second wind turbine 8 and wet method dust and gas processing unit 5.The kiln tail Case 2 is located at turn around the tail portion of kiln 1 and is tightly connected with rotary kiln 1；The dust chamber 3 is located at the top of the kiln tail case 2 simultaneously And it is in fluid communication with the kiln tail case 2.Specifically, the kiln tail position of rotary kiln 1 is sealed, forms kiln tail case 2, and in institute A dust chamber 3 is installed in the top for stating kiln tail case 2, can be connected between the kiln tail case 2 and the dust chamber 3 by pipeline, from And it realizes and is in fluid communication.
The air inlet of first wind turbine 4 is connect by the first intake stack 9 with dust chamber 3, preferably described first wind The air inlet of machine 4 is connect by the first intake stack 9 with the top of dust chamber 3；The exhaust outlet of first wind turbine 4 passes through first Exhaust duct 10 is connect with wet method dust and gas processing unit 5.The air inlet of second wind turbine 8 passes through the second intake stack 11 and sky Gas connects, and the exhaust outlet of second wind turbine 8 is connect by the second exhaust duct 12 with dust chamber 3, preferably the second wind turbine 8 Exhaust outlet is connect by the second exhaust duct 12 with the side of dust chamber 3.The wet method dust and gas processing unit 5 is preferably numb stone Tower.
First wind turbine 4 described in the utility model is preferably centrifugal blower, the more preferably negative-pressure air fan of resistance to acid centrifuging；It is described The peak suction of first wind turbine 4 is 8000-10000Pa (such as 8000,8500,9000,9500 or 10000Pa)；Described second Wind turbine 8 is preferably forced draft machine.Specifically, 3 He of dust chamber can be adjusted by adjusting 4 wind pressure regulating valve size of the first wind turbine Pressure size in kiln tail case 2 can be blown (air draft), most by the wind pressure regulating valve size of the second wind turbine 8 in dust chamber 3 Eventually so that be in dust chamber 3 tiny structure (negative pressure is between 10-100Pa) and kiln tail case 2 it is interior be that (negative pressure is in 1000- for negative pressure Between 2000Pa)；Negative pressure, tiny structure described in the utility model refer to opposite pressure.
In some preferred embodiments, the dust chamber 3 is arranged on the side of the feed inlet 6 of the rotary kiln 1, institute It states dust chamber 3 and the kiln tail case 2 is provided with the feed pipe 7 being connected between the feed inlet 6 and the rotary kiln 1, institute Feed pipe 7 is stated across the inside of the dust chamber 3 and kiln tail case 2, preferably described feed pipe 7 athwart the dust chamber 3 with The inside of kiln tail case 2.The side that dust chamber 3 is arranged on to feed inlet 6 avoids rotary kiln 1 and kiln tail case 2 and outside is direct Connection so that the sealing effect in kiln tail case 2 is good.
In some preferred embodiments, the feed inlet 6 is provided with charging baffle.
In some preferred embodiments, the dust chamber 3 is made of babinet and the sealant being formed in outside babinet； Preferably (such as the babinet is built by highiy refractory brick), the size of the babinet is made by high-temperature refractory in the babinet It is not particularly limited, facilitates recycling dust (material), such as it is 1m, width 1m to be built into length with highiy refractory brick, And highly it is the babinet of 2m；The sealant is preferably formed by stainless steel plate.
In some preferred embodiments, the thickness of the sealant is 3-4mm (such as 3,3.5 or 4mm).
Embodiment 1
As shown in Figure 1, dry-process rotory kiln kiln tail magnetic material is collected using the utility model device and reduces kiln tail tail gas The specific work process of discharge is：The feed inlet 6 of iron oxide red Preburning material from 3 side of dust chamber that granularity is 0.6-1.5um is fed, It is provided in raw material to rotary kiln 1 by feed pipe 7；The air inlet of first wind turbine 4 is passed through into the first intake stack 9 and dust chamber 3 tops connect；By the air inlet of the second wind turbine 8 by the second intake stack 11 and air communication, the exhaust outlet of the second wind turbine 8 leads to The second exhaust duct 12 is crossed to connect with the side of dust chamber 3；In burn-in process, blown using the second wind turbine 8 toward dust chamber 3 (air draft) improves the pressure in dust chamber 3；By the collective effect of the first wind turbine 4 and the second wind turbine 8, finally so that kiln tail case 2 Interior negative pressure negative pressure between 50-100pa (tiny structure) between 1000-2000Pa and in dust chamber 3, by kiln tail case 2 Negative pressure collects the dust and gas mixture comprising dust and tail gas of 1 kiln tail of rotary kiln release, and dust and gas in kiln tail case 2 is effectively inhibited to mix It closes beyond the region of objective existence and drains to and workshop condition is polluted in air, reached reduction kiln tail tail gas and dust (kiln tail magnetic material) uncontrollable discharge Effect；The dust for coming from the kiln tail case is made to drop in the dust chamber by the tiny structure in dust chamber 3, so as to make Dust separation and collection in the dust and gas mixture；Dust and gas mixture (the kiln of dust has been isolated by the first wind turbine 4 Tail tail gas and small part dust) it is discharged into pocked stone pagoda and carries out wet-treating.
The dust and tail gas content of discharging pocked stone pagoda are detected：Dust concentration detects numerical value in 10-30mg/m3Range It is interior, meet《Industrial furnace air pollution emission standard GB9078-1996》The requirement of discharge standard, efficiency of dust collection can be denoted as 100%；Sulfur dioxide in tail gas detects numerical value in detection numerical value in 20-40mg/m3In the range of, nitrogen oxides detection numerical value exists 20-40mg/m3In the range of, meet《Air pollution emission standard GB16297-2001》The requirement of discharge standard；Chlorination in tail gas Hydrogen detects numerical value in 2.25mg/m3Hereinafter, meet《Air pollution emission standard GB16297-2001》Two level discharge mark in table 2 Accurate requirement.The utility model device efficiency of dust collection is 100%, and exhaust emissions compliance rate is 100%.
Embodiment 2-11 is carried out by the way of substantially the same manner as Example 1, and difference is as shown in table 1.
Table 1：The raw material and dust removing effects of embodiment 1-11.
It illustrating, 11 mixture of embodiment is selected from one or more of raw material described in embodiment 1-10, Its different granularity of the constituent of mixture is also different, therefore the granularity of the mixture in embodiment 11 is with meeting-represent.
Finally it should be noted that：Above example is only to illustrate the technical solution of the utility model, rather than its limitations； Although the utility model is described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that： It still can modify to the technical solution recorded in foregoing embodiments or which part technical characteristic is carried out etc. With replacement；And these modifications or replacement, various embodiments of the utility model technology that it does not separate the essence of the corresponding technical solution The spirit and scope of scheme.

Claims (10)

  1. A kind of 1. device collected dry-process rotory kiln kiln tail dust and reduce kiln tail exhaust emissions, which is characterized in that described device Including：
    Kiln tail case (2) is located at turn around the tail portion of kiln (1) and is tightly connected with rotary kiln (1)；
    Dust chamber (3) is in fluid communication positioned at the top of the kiln tail case (2) and with the kiln tail case (2)；
    First wind turbine (4), the air inlet of first wind turbine (4) are connect by the first intake stack (9) with dust chamber (3)；
    Second wind turbine (8), the air inlet of second wind turbine (8) is by the second intake stack (11) and air communication, and described The exhaust outlet of two wind turbines (8) is connect by the second exhaust duct (12) with dust chamber (3)；With
    Wet method dust and gas processing unit (5), the exhaust outlet of the wet method dust and gas processing unit (5) and first wind turbine (4) pass through First exhaust duct (10) connects.
  2. 2. the apparatus according to claim 1, which is characterized in that the wet method dust and gas processing unit (5) is pocked stone pagoda.
  3. 3. device according to claim 1 or 2, it is characterised in that：
    The dust chamber (3) is arranged on the side of the feed inlet (6) of the rotary kiln (1)；
    The dust chamber (3) and the kiln tail case (2), which are provided with, to be connected between the feed inlet (6) and the rotary kiln (1) Feed pipe (7), the feed pipe (7) is across the inside of the dust chamber (3) and kiln tail case (2).
  4. 4. the apparatus according to claim 1, it is characterised in that：
    The air inlet of first wind turbine (4) is connect by the first intake stack (9) with the top of dust chamber (3)；
    And/or the exhaust outlet of second wind turbine (8) is connect by the second exhaust duct (12) with the side of dust chamber (3).
  5. 5. the apparatus according to claim 1, which is characterized in that the dust chamber (3) is by babinet and is formed in outside babinet Sealant composition.
  6. 6. device according to claim 5, which is characterized in that the babinet is made of high-temperature refractory；It is and/or described Sealant is sealed by stainless steel plate and is formed.
  7. 7. device according to claim 5 or 6, which is characterized in that the length of the babinet be 1m, width 1m, and Highly it is 2m.
  8. 8. device according to claim 5 or 6, which is characterized in that the thickness of the sealant is 3-4mm.
  9. 9. the apparatus according to claim 1, it is characterised in that：
    First wind turbine (4) is the negative-pressure air fan of resistance to acid centrifuging；
    And/or second wind turbine (8) is forced draft machine.
  10. 10. the apparatus according to claim 1, which is characterized in that the peak suction of first wind turbine (4) is 8000- 10000Pa。
CN201721377555.3U 2017-10-24 2017-10-24 A kind of device collected dry-process rotory kiln kiln tail dust and reduce kiln tail exhaust emissions Active CN207507169U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201721377555.3U CN207507169U (en) 2017-10-24 2017-10-24 A kind of device collected dry-process rotory kiln kiln tail dust and reduce kiln tail exhaust emissions

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201721377555.3U CN207507169U (en) 2017-10-24 2017-10-24 A kind of device collected dry-process rotory kiln kiln tail dust and reduce kiln tail exhaust emissions

Publications (1)

Publication Number Publication Date
CN207507169U true CN207507169U (en) 2018-06-19

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Country Status (1)

Country Link
CN (1) CN207507169U (en)

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GR01 Patent grant
GR01 Patent grant
TR01 Transfer of patent right

Effective date of registration: 20190710

Address after: 236000 Yingzhou Economic Development Zone, Fuyang City, Anhui Province

Patentee after: Beikuang magnetic materials (Fuyang) Co., Ltd.

Address before: 102600 Beijing Daxing District Beixing Road East Section 22 No.1 Building 8 Floor

Patentee before: Materials & Technology Co., Ltd.

TR01 Transfer of patent right