CN203478936U - High-energy-utilization-rate rotary kiln for processing denitrification catalyst - Google Patents
High-energy-utilization-rate rotary kiln for processing denitrification catalyst Download PDFInfo
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- CN203478936U CN203478936U CN201320453030.9U CN201320453030U CN203478936U CN 203478936 U CN203478936 U CN 203478936U CN 201320453030 U CN201320453030 U CN 201320453030U CN 203478936 U CN203478936 U CN 203478936U
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- rotary kiln
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- desulfurization
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Abstract
The utility model discloses a high-energy-utilization-rate rotary kiln for processing a denitrification catalyst. The rotary kiln comprises a dehydration zone (1) and a desulfurization zone (2), wherein a plurality of radial air holes (3) are uniformly formed in inner walls of the dehydration zone. The rotary kiln has the benefits that the plurality of radial air holes are formed in the inner walls of the dehydration zone and/or the desulfurization zone, so that materials in the dehydration zone and/or the desulfurization zone are contacted with hot air fully, the dehydration and desulfurization speed is increased, the energy utilization rate of the rotary kiln is increased, the energy consumption is reduced, and the product yield is also increased.
Description
Technical field
The utility model relates to rotary kiln, relates in particular to for processing the high-energy utilization rate rotary kiln of denitrating catalyst.
Background technology
The calcining of denitrating catalyst is in rotary kiln, denitrating catalyst to be heated, make it slowly to slough free water and in conjunction with water, and at higher temperature, slough most sulphur, and complete arrangement and the conversion of crystal formation, realize best size distribution and specific area.Calcining is the course of reaction of a strong endothermic, and the industrial rotary kiln that all adopts is calcined, and adopts flue gas and material contact method heating and calcining.Certainly, complexity due to metatitanic acid composition, the process of calcining is not simple process, whole calcining should comprise free evaporation of water, in conjunction with removing of water, adsorbs removing of sulphur, removing of fault sulphur, the process that the growth of catalyst, gathering, stable crystal form and conversion etc. are many, had wherein both comprised physical change, had also comprised chemical change.After metatitanic acid enters rotary kiln, although the feeder megadyne temperature degree of rotary kiln is very high, but the transmission of heat needs the time, therefore the temperature of metatitanic acid raises and is unhappy, although now metatitanic acid is heated gradually in the process of rolling, it is slower that temperature rises, but free water started to remove, and at 140 ℃, is generally free evaporation of water below; Continuation rising along with temperature, after free water removes completely, metatitanic acid temperature continues to raise, but loss on ignition does not reduce, mean that now metatitanic acid is gathering strength, when metatitanic acid temperature reaches 200 ℃, in conjunction with water, just start to remove, in the time of 300 ℃, can reach dewatering speed faster, but real dehydration completely need to be more than 400 ℃; While surpassing 400 ℃, part is adsorbed sulphur and is started to decompose and remove; The temperature that real a large amount of desulfurization starts is more than 450 ℃, and follow-up is catalyst particle crystal transfer and stable.
In industrial production, generally the process of calcining is divided into four-stage according to its physicochemical change: drying zone, desulfurization zone, crystal transfer district and particle-stabilised district.
Calcining is the operation of Catalyst Production energy consumption maximum, is also the most critical operation of quality control.Traditional calcining is, by burner blower fan, temperature is passed to kiln tail bit, lapse of temperature by kiln hood position.Follow rotary kiln to rotate.Also the function that the temperature that has part factory to adjust each district by conveying axis to Secondary Air transmission has reached each district realizes.But according to data statistics, the effective utility of laser power of rotary kiln only has 15% left and right, and capacity usage ratio is low, and energy consumption is high, and product percent of pass is low.
Utility model content
The technical problems to be solved in the utility model is existing low for processing the rotary kiln capacity usage ratio of denitrating catalyst, and energy consumption is high, and product percent of pass is low, is provided for processing the high-energy utilization rate rotary kiln of denitrating catalyst for this reason.
The technical solution of the utility model is: for processing the high-energy utilization rate rotary kiln of denitrating catalyst, it comprises drying zone and desulfurization zone, is evenly provided with some radial ventilations hole on the inwall of described drying zone.
The improvement of such scheme is to be evenly provided with some radial ventilations hole on the inwall of described desulfurization zone.
The further improvement of such scheme is the axis deviation certain angle of described radial ventilation hole and described rotary kiln.
The beneficial effects of the utility model are by being provided with some radial ventilations hole on the inwall in drying zone and/or desulfurization zone, material in drying zone and/or desulfurization zone is fully contacted with hot blast, accelerate the speed of dehydration desulfurization, and then the capacity usage ratio of raising rotary kiln, reduce energy consumption, product percent of pass is also improved.
Accompanying drawing explanation
Fig. 1 is the utility model schematic diagram;
Fig. 2 is the A-A cutaway view of Fig. 1;
In figure, 1, drying zone, 2, desulfurization zone, 3, radial ventilation hole.
The specific embodiment
Below in conjunction with accompanying drawing, the utility model is described further.
As shown in Figure 1 and Figure 2, the utility model comprises drying zone 1 and desulfurization zone 2, is evenly provided with some radial ventilations hole 3 on the inwall of drying zone.
The number in radial ventilation hole does not limit, and distributing position does not limit yet, and can be to be evenly distributed on the inwall of drying zone, realizes the contact heating of multi-angle to material with the i.e. represented cooperation of arrow shown in figure of axial wind from drying zone process.
Can evenly be provided with at the inwall of desulfurization zone some radial ventilations hole equally, number and the distributing position in radial ventilation hole do not limit yet, and realize the contact heating of multi-angle to material with the axial wind cooperation from desulfurization zone process.
More excellent scheme is to be all provided with same radial ventilation hole at drying zone and desulfurization zone, by regulating air quantity to realize the temperature control requirement to drying zone and desulfurization zone.
Radial ventilation hole can be to depart from rotary kiln axle center certain angle, and this angle can be the angle that 15 °, 30 °, 60 ° or other those skilled in the art can expect.Footpath is aweather larger with axial wind crossover range like this, also larger with the contact area of material, has further improved capacity usage ratio, radial ventilation hole can certainly be made as vertical with the inwall of rotary kiln towards rotary kiln axle center.
Claims (3)
1. for processing the high-energy utilization rate rotary kiln of denitrating catalyst, it comprises drying zone (1) and desulfurization zone (2), it is characterized in that being evenly provided with some radial ventilations hole (3) on the inwall of described drying zone.
2. as claimed in claim 1 for processing the high-energy utilization rate rotary kiln of denitrating catalyst, it is characterized in that being evenly provided with some radial ventilations hole on the inwall of described desulfurization zone.
3. as claimed in claim 1 or 2 for processing the high-energy utilization rate rotary kiln of denitrating catalyst, it is characterized in that the axis deviation certain angle of described radial ventilation hole and described rotary kiln.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320453030.9U CN203478936U (en) | 2013-07-29 | 2013-07-29 | High-energy-utilization-rate rotary kiln for processing denitrification catalyst |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320453030.9U CN203478936U (en) | 2013-07-29 | 2013-07-29 | High-energy-utilization-rate rotary kiln for processing denitrification catalyst |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203478936U true CN203478936U (en) | 2014-03-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320453030.9U Expired - Lifetime CN203478936U (en) | 2013-07-29 | 2013-07-29 | High-energy-utilization-rate rotary kiln for processing denitrification catalyst |
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| CN (1) | CN203478936U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103344108A (en) * | 2013-07-29 | 2013-10-09 | 安徽迪诺环保新材料科技有限公司 | High-energy utilization rate rotary kiln for processing denitration catalyst |
-
2013
- 2013-07-29 CN CN201320453030.9U patent/CN203478936U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103344108A (en) * | 2013-07-29 | 2013-10-09 | 安徽迪诺环保新材料科技有限公司 | High-energy utilization rate rotary kiln for processing denitration catalyst |
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Granted publication date: 20140312 |