CN105435625A - Sludge-dispersing equipment used for cement kiln for denitration - Google Patents
Sludge-dispersing equipment used for cement kiln for denitration Download PDFInfo
- Publication number
- CN105435625A CN105435625A CN201511030692.5A CN201511030692A CN105435625A CN 105435625 A CN105435625 A CN 105435625A CN 201511030692 A CN201511030692 A CN 201511030692A CN 105435625 A CN105435625 A CN 105435625A
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- CN
- China
- Prior art keywords
- passage
- dewatered sludge
- cement kiln
- denitration
- whirl deposite
- Prior art date
- 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.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/54—Nitrogen compounds
- B01D53/56—Nitrogen oxides
- B01D53/565—Nitrogen oxides by treating the gases with solids
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/62—Carbon oxides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/81—Solid phase processes
- B01D53/83—Solid phase processes with moving reactants
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/50—Carbon oxides
- B01D2257/502—Carbon monoxide
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
- B01D2258/0233—Other waste gases from cement factories
Abstract
The invention discloses sludge-dispersing equipment used for a cement kiln for denitration. The sludge-dispersing equipment comprises an equipment body, wherein one end of the equipment body is a feed end, and the other end of the equipment body is a discharge end; a central air passage, a swirling wind passage, a drying sludge conveying passage and an axial wind passage are sequentially formed in the equipment body from inside to outside; feed ends of the central air passage, the swirling wind passage, the drying sludge conveying passage and the axial wind passage are all formed at the feed end of the equipment body; discharge ends of the central air passage, the swirling wind passage, the drying sludge conveying passage and the axial wind passage are all formed at the discharge end of the equipment body; a vane swirler is arranged in the swirling wind passage and at the part close to the discharge end of the swirling wind passage. According to the sludge-dispersing equipment used for the cement kiln for denitration, provided by the invention, the contact effect of drying sludge and cement kiln flue gas is strengthened, the burning speed of drying sludge is increased while the denitration effect is strengthened, an obvious influence on operation of the cement kiln system is avoided, the energy consumption is not increased on the basis of the original system, and the pollutant emission is also not increased at the same time.
Description
Technical field
The invention belongs to environmental protection technical field, particularly a kind of mud dispersing apparatus for cement kiln denitration.
Background technology
In China, the Energy Mix of cement industry based on coal ought for the previous period in can not change, the gases such as nitrogen oxide can be discharged in coal burning process, simultaneously because cement industry is in large scale, the nitrogen oxide of cement industry discharge accounts for 7% of discharged nitrous oxides total amount, and improvement situation is very severe.Current China cement production enterprise majority adopts SNCR technical controlling discharged nitrous oxides.SNCR technology adopts ammoniacal liquor or urea as reducing agent, utilizes pump and compressed air to spray into section and the reaction of nitrogen oxides of 850-1050 DEG C of cement kiln preheaters, generates the nitrogen not having to pollute.But SNCR technology needs to consume ammoniacal liquor or urea, brings very large cost pressure to cement production enterprise.
Current China has minority enterprise to utilize the solid waste such as cement kiln synergic processing dewatered sludge.Because the reducing substances content contained in dewatered sludge is higher, therefore cement kiln can reduce the concentration of emission of nitrogen oxide while cooperative disposal dewatered sludge.Dewatered sludge is broken up by Geldart-D particle or compressed air or is entered dore furnace through seasoning spreading box dispersion.But in use find, the limited efficiency of the concentration of emission of nitrogen oxide can be reduced on the one hand, easily cause carbonomonoxide concentration in discharge flue gas higher because complete tail-off time of mud is longer on the other hand.And its reason is, no matter adopt the mode of movement of which kind of dewatered sludge, after dewatered sludge enters dore furnace, be all difficult to smoke contacts even, thus cause dewatered sludge denitration effect carbonomonoxide concentration that is not good and that discharge in flue gas higher.
Summary of the invention
The present invention provides a kind of mud dispersing apparatus for cement kiln denitration for solving in known technology the technical problem that exists, and this equipment can strengthen the contact effect of dewatered sludge and flue gas, the concentration of emission of reduction nitrogen oxide and carbon monoxide.
The technical scheme that the present invention takes for the technical problem existed in solution known technology is: a kind of mud dispersing apparatus for cement kiln denitration, comprises body, and one end of described body is input, and the other end is output; Center wind duct, Whirl deposite tank passage, dewatered sludge transfer passage and axial flow wind passage is formed from the inside to the outside successively in described body; Described center wind duct extends along the central axis of described body; Described Whirl deposite tank passage is formed in the circular passage around described center wind duct; Described dewatered sludge transfer passage is formed in the parameatal circular passage of described Whirl deposite tank; Described axial flow wind passage is formed in the circular passage around described dewatered sludge transfer passage; The input of described center wind duct, described Whirl deposite tank passage, described dewatered sludge transfer passage and described axial flow wind passage is all formed on the input of described body, and the output of described center wind duct, described Whirl deposite tank passage, described dewatered sludge transfer passage and described axial flow wind passage is all formed on the output of described body; The position closing on its output in described Whirl deposite tank passage is provided with vane swirler.
The blade tilt of described vane swirler is 50 ° or 55 ° or 60 °.
The advantage that the present invention has and good effect are:
1) by the interaction of Whirl deposite tank and axial flow wind, the contact effect of dewatered sludge and flue gas is greatly improved, accelerates the burnout velocity of mud, reduce the concentration of emission of nitrogen oxide and carbon monoxide.
2) Whirl deposite tank passage export Whirl deposite tank be eddy flow state, the mud exported with dewatered sludge transfer passage carries wind facies effect, strengthens the radial diffusion of dewatered sludge particle, can avoid dewatered sludge with high concentration even piston-like enter dore furnace.
3) center wind duct is set, is assisted the mixed effect of adjustment Whirl deposite tank and axial flow wind by centre wind.
4) by adjustment interactional Whirl deposite tank and axial flow wind, effectively can regulate the mixability of dewatered sludge and flue gas and mix distance, being conducive to safeguarding stablizing of manufacture of cement.
In sum, invention enhances the contact effect of dewatered sludge and cement kiln flue gas, the burning velocity of dewatered sludge is accelerated while strengthening denitration effect, the operation of quality coal in cement kiln systems is not had a significant effect, also can not increase energy consumption on original system basis, the discharge of pollutant can not be increased equally.Test shows: the cement clinker production line disposing the 2500t/d of dewatered sludge, after employing the present invention disperses mud, discharged nitrous oxides concentration declines 10% ~ 50%, day saves ammoniacal liquor consumption 2 ~ 8 tons, cement production enterprise can reduce ammoniacal liquor buying expenses 0.2 ~ 0.8 ten thousand yuan every day, and year reduces ammoniacal liquor buying expenses 60 ~ 2,400,000 yuan.In addition, in tail gas, carbonomonoxide concentration reduces, and makes cement production enterprise both decrease pollutant emission and also reduces fuel the consumption of coal.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is the A-A sectional view of Fig. 1.
In figure: 1, body, 2, the input of body, 3, center wind duct, 4, Whirl deposite tank passage, 5, dewatered sludge transfer passage, 6, axial flow wind passage, 7, vane swirler, 8, the output of body.
Detailed description of the invention
For summary of the invention of the present invention, Characteristic can be understood further, hereby exemplify following examples, and coordinate accompanying drawing to be described in detail as follows:
Refer to Fig. 1 ~ Fig. 2, a kind of mud dispersing apparatus for cement kiln denitration, comprises body 1, and one end of described body 1 is input, and the other end is output; Center wind duct 3, Whirl deposite tank passage 4, dewatered sludge transfer passage 5 and axial flow wind passage 6 is formed from the inside to the outside successively in described body 1; Described center wind duct 3 extends along the central axis of described body 1; Described Whirl deposite tank passage 4 is formed in the circular passage around described center wind duct 3; Described dewatered sludge transfer passage 5 is formed in the circular passage around described Whirl deposite tank passage 4; Described axial flow wind passage 6 is formed in the circular passage around described dewatered sludge transfer passage 5; The input of described center wind duct 3, described Whirl deposite tank passage 4, described dewatered sludge transfer passage 5 and described axial flow wind passage 6 is all formed on the input 2 of described body, and the output of described center wind duct 3, described Whirl deposite tank passage 4, described dewatered sludge transfer passage 5 and described axial flow wind passage 6 is all formed on the output 8 of described body; The position closing on its output in described Whirl deposite tank passage 4 is provided with vane swirler 7.
In the present embodiment, the blade tilt of described vane swirler 7 is 50 ° or 55 ° or 60 °.
Above-mentioned mud dispersing apparatus is mainly used in dewatered sludge to be transported in the dore furnace of cement kiln, the nitrogen oxide in the reducing substances reduction flue gas utilizing dewatered sludge to discharge.
Operation principle of the present invention:
Mud conveying wind, by dewatered sludge transfer passage 5, adopts Geldart-D particle dewatered sludge to enter dore furnace from outside.The air-flow entered in Whirl deposite tank passage 4 produces rotation under the effect of vane swirler rotating vane, enters dore furnace after forming Whirl deposite tank.In vane swirler 7, the quantity of tangential vane and size should be determined according to the disposing capacity of the production capacity of cement kiln and dewatered sludge.By the axial flow wind of axial flow wind passage 6 with directly enter dore furnace vertically by the centre wind of center wind duct 3.Mud conveying wind, by after the ejection of dewatered sludge transfer passage, affects by inner side Whirl deposite tank, the trend of oriented outer radial diffusion; By sweeping along of outside axial flow wind, there is again retainer shaft to the trend moved ahead, therefore by adjusting input air quantity and the input blast of axial flow wind and Whirl deposite tank, the disperse state of dewatered sludge particle in dore furnace can be adjusted.Mud conveying wind constantly mixes with axial flow wind and Whirl deposite tank, thus enhances the mixability of dewatered sludge particle and flue gas.By air quantity and the blast of the centre wind in adjustment input center wind duct 3, can carry out auxiliary adjustment to the disperse state of dewatered sludge, this is also conducive to mud and the contact of decomposing inner flue gas of the stove.
Although be described the preferred embodiments of the present invention by reference to the accompanying drawings above; but the present invention is not limited to above-mentioned detailed description of the invention; above-mentioned detailed description of the invention is only schematic; be not restrictive; those of ordinary skill in the art is under enlightenment of the present invention; do not departing under the ambit that present inventive concept and claim protect, can also make a lot of form, these all belong within protection scope of the present invention.
Claims (2)
1. for a mud dispersing apparatus for cement kiln denitration, it is characterized in that, comprise body, one end of described body is input, and the other end is output; Center wind duct, Whirl deposite tank passage, dewatered sludge transfer passage and axial flow wind passage is formed from the inside to the outside successively in described body; Described center wind duct extends along the central axis of described body; Described Whirl deposite tank passage is formed in the circular passage around described center wind duct; Described dewatered sludge transfer passage is formed in the parameatal circular passage of described Whirl deposite tank; Described axial flow wind passage is formed in the circular passage around described dewatered sludge transfer passage; The input of described center wind duct, described Whirl deposite tank passage, described dewatered sludge transfer passage and described axial flow wind passage is all formed on the input of described body, and the output of described center wind duct, described Whirl deposite tank passage, described dewatered sludge transfer passage and described axial flow wind passage is all formed on the output of described body; The position closing on its output in described Whirl deposite tank passage is provided with vane swirler.
2. according to claim 1 for the mud dispersing apparatus of cement kiln denitration, it is characterized in that, the blade tilt of described vane swirler is 50 ° or 55 ° or 60 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511030692.5A CN105435625A (en) | 2015-12-30 | 2015-12-30 | Sludge-dispersing equipment used for cement kiln for denitration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511030692.5A CN105435625A (en) | 2015-12-30 | 2015-12-30 | Sludge-dispersing equipment used for cement kiln for denitration |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105435625A true CN105435625A (en) | 2016-03-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201511030692.5A Pending CN105435625A (en) | 2015-12-30 | 2015-12-30 | Sludge-dispersing equipment used for cement kiln for denitration |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10192896A (en) * | 1996-12-27 | 1998-07-28 | Mitsubishi Materials Corp | Sludge treatment facility |
| CN201983261U (en) * | 2011-03-16 | 2011-09-21 | 扬州盛旭科技有限公司 | Four-passage pulverized coal burner with simulated flame gathering cover |
| CN202938317U (en) * | 2012-12-12 | 2013-05-15 | 山东大学 | Device of crushing pyrolysis and resource utilization of sludge |
| CN203431856U (en) * | 2013-06-11 | 2014-02-12 | 郑州奥通热力工程有限公司 | A detachable nozzle of a five-air-channel pulverized coal burner |
| CN103801189A (en) * | 2013-11-26 | 2014-05-21 | 华南理工大学 | Sludge denitration device and sludge denitration method |
| CN204159238U (en) * | 2014-08-26 | 2015-02-18 | 山西蓝天环保设备有限公司 | Double-deck jet powder body mixing arrangement |
| CN205461777U (en) * | 2015-12-30 | 2016-08-17 | 天津中材工程研究中心有限公司 | A mud dispersion equipment for cement kiln denitration |
-
2015
- 2015-12-30 CN CN201511030692.5A patent/CN105435625A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10192896A (en) * | 1996-12-27 | 1998-07-28 | Mitsubishi Materials Corp | Sludge treatment facility |
| CN201983261U (en) * | 2011-03-16 | 2011-09-21 | 扬州盛旭科技有限公司 | Four-passage pulverized coal burner with simulated flame gathering cover |
| CN202938317U (en) * | 2012-12-12 | 2013-05-15 | 山东大学 | Device of crushing pyrolysis and resource utilization of sludge |
| CN203431856U (en) * | 2013-06-11 | 2014-02-12 | 郑州奥通热力工程有限公司 | A detachable nozzle of a five-air-channel pulverized coal burner |
| CN103801189A (en) * | 2013-11-26 | 2014-05-21 | 华南理工大学 | Sludge denitration device and sludge denitration method |
| CN204159238U (en) * | 2014-08-26 | 2015-02-18 | 山西蓝天环保设备有限公司 | Double-deck jet powder body mixing arrangement |
| CN205461777U (en) * | 2015-12-30 | 2016-08-17 | 天津中材工程研究中心有限公司 | A mud dispersion equipment for cement kiln denitration |
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Application publication date: 20160330 |
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