CN203657446U - Device for increasing primary air temperature by waste heat of rotary kiln - Google Patents
Device for increasing primary air temperature by waste heat of rotary kiln Download PDFInfo
- Publication number
- CN203657446U CN203657446U CN201320851246.0U CN201320851246U CN203657446U CN 203657446 U CN203657446 U CN 203657446U CN 201320851246 U CN201320851246 U CN 201320851246U CN 203657446 U CN203657446 U CN 203657446U
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- Prior art keywords
- rotary kiln
- arrest
- chuck
- waste heat
- wind
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- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
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- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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- Muffle Furnaces And Rotary Kilns (AREA)
Abstract
A device for increasing primary air temperature by waste heat of a rotary kiln comprises a heat collector jacket. The heat collector jacket is disposed outside the rotary kiln and provided with an air inlet connected with a fan through a pipe. The heat collector jacket is further provided with an air outlet connected with a coal spray pipe through a pipe. According to the device, surface radiant waste heat of a cylinder of the rotary kiln is recycled and is centrally recycled to the heat collector jacket by heat exchange, the fan blows the heat into the coal spray pipe, primary air temperature of the coal spray pipe is increased, combustion rate of pulverized coal is increased, energy resources are greatly saved, secondary air temperature is also increased, and calcination quality of clinker is improved. Meanwhile, the surface radiant waste heat of the cylinder of the rotary kiln is absorbed, the surface temperature of the rotary kiln is lowered, fewer cooling fans are used, and direct power saving is achieved.
Description
Technical field
The utility model relates to cylinder of rotary kiln surface UTILIZATION OF VESIDUAL HEAT IN technical field, is specifically related to a kind of cylinder of rotary kiln device for reclaiming radiant heat on surface.
Background technology
At present, cement production enterprise is normally environment temperature of a wind-warm syndrome in process of production, because coal dust calorific value is low, a wind-warm syndrome is low, causes kiln hood coal injection pipe coal dust firing incomplete; Secondary air temperature is for a long time in 1050 ℃ of left and right, caused among the vicious circle of " temperature low-add big coal injection-incomplete combustion-temperature lower ", finally causes that clinker quality is poor, the higher situation of coal consumption.
In the production process of cement, rotary kiln can produce a large amount of used heat, and at present, the utilization of rotary kiln used heat is mainly to install waste heat boiler additional at kiln hood, kiln tail, the Steam Actuation steam turbine power generation acting producing by boiler.The method can only be collected the waste heat in flue gas, and a large amount of radiant heat that cylinder of rotary kiln surface produces are not recycled, and have caused the wasting of resources.
Utility model content
In order to solve in prior art due to a low incomplete technical problem of coal dust firing that causes of wind-warm syndrome, the purpose of this utility model is to provide one and utilizes rotary kiln waste heat to improve a wind-warm syndrome device, the wind-warm syndrome of a large amount of radiant heat raising that this device produces by reclaiming cylinder of rotary kiln surface, not only improve coal combustion rate, save mass energy, and improve secondary air temperature, thereby improve the burning quality of grog, save the use of cooling blower simultaneously, played the effect of direct economize on electricity.
To achieve these goals, the utility model has adopted following technical scheme:
One utilizes rotary kiln waste heat to improve a wind-warm syndrome device, comprises thermal-arrest chuck, and its closed container that is hollow is arranged on the outside of rotary kiln; Described thermal-arrest chuck is provided with air inlet, and air inlet is connected with blower fan by pipeline; Described thermal-arrest chuck is also provided with air outlet, and air outlet is connected with coal injection pipe by pipeline.
Further, described thermal-arrest chuck is provided with two air inlets, and two air inlets are connected with the blower fan of two different capacities respectively; Described thermal-arrest chuck is provided with two air outlets, and two air outlets are connected with the He Nei air port, outer air port of coal injection pipe respectively.
Further, on described thermal-arrest chuck, temperature, pressure measuring element and safety valve are installed, and by the temperature and pressure of DCS system control thermal-arrest chuck.
Further, the pressure signal of described thermal-arrest chuck and blower fan form PID closed-loop control, the stability with assurance system for wind pressure.
Further, described thermal-arrest chuck is hollow semicircle cylindricality, and it is arranged on the outside of rotary kiln, apart from cylinder of rotary kiln 5～20cm; Its end face angle α is in the horizontal direction 15～40 °.
Further, described blower fan adopts roots blower.
Further, described thermal-arrest chuck adopts stainless steel material to make.
Useful technique effect of the present utility model is:
The rotary kiln waste heat that utilizes of the present utility model improves a wind-warm syndrome device, reclaim cylinder of rotary kiln surface emissivity waste heat, by heat exchange by waste heat centralized recovery in thermal-arrest chuck, be blown into coal injection pipe through blower fan, improve wind-warm syndrome of coal injection pipe, not only improved coal combustion rate, saved mass energy, and improved secondary air temperature, improve the burning quality of grog.Meanwhile, because this device has absorbed cylinder of rotary kiln surface emissivity waste heat, reduce rotary kiln surface temperature, can save cooling blower, played the effect of direct economize on electricity.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the sectional view of thermal-arrest chuck and rotary kiln.
Reference numeral
1. thermal-arrest chuck; 2. rotary kiln; 3. coal injection pipe; 4. blower fan
The specific embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present utility model is described in further details.
As depicted in figs. 1 and 2, the rotary kiln waste heat that utilizes of the present utility model improves a wind-warm syndrome device, comprises thermal-arrest chuck 1, and its closed container that is hollow, is arranged on the outside of rotary kiln 2; Described thermal-arrest chuck 1 is provided with air inlet, and air inlet is connected with blower fan 4 by pipeline; Described thermal-arrest chuck 1 is also provided with air outlet, and air outlet is connected with coal injection pipe 3 by pipeline.
As shown in Figure 1, in the present embodiment, described thermal-arrest chuck 1 is provided with two air inlets, and two air inlets are connected with the blower fan 4 of two different capacities respectively; Described thermal-arrest chuck 1 is provided with two air outlets, and two air outlets are connected with the He Nei air port, outer air port of coal injection pipe 3 respectively.
In the present embodiment, on described thermal-arrest chuck 1, temperature, pressure measuring element and safety valve are installed, and by the temperature and pressure of DCS system control thermal-arrest chuck 1.In the time that temperature exceedes design temperature, system opens the safety-valve automatically, to guarantee the safe operation of whole system.
The pressure signal of described thermal-arrest chuck 1 and blower fan 4 form PID closed-loop control, in the time that thermal-arrest chuck 1 internal pressure is not enough, automatically strengthen frequency converter specified rate, improve rotation speed of fan; Vice versa, the stability with assurance system for wind pressure.
In the present embodiment, described thermal-arrest chuck 1 is hollow semicircle cylindricality, and it is arranged on the outside of rotary kiln 2, and apart from cylinder of rotary kiln 5～20cm, this distance can be adjusted the requirement of Kiln Shell Temperature according to production technology; The end face of described thermal-arrest chuck 1 angle α is in the horizontal direction 15～40 °, neither affects the temperature of cylindrical shell scanner measurement rotary kiln, does not also affect the normal operation of rotary kiln device; Meanwhile, thermal-arrest chuck has formed on cylinder of rotary kiln surface and has covered rainproof layer, can prevent the corrosion of rainwater to cylindrical shell.
In the present embodiment, described blower fan 4 adopts roots blower, does not need to increase use extra blower fan and energy consumption.
In the present embodiment, described thermal-arrest chuck 1 adopts stainless steel material to make.
Finally explanation is, above embodiment is only unrestricted in order to the technical solution of the utility model to be described, although the utility model is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can modify or be equal to replacement the technical solution of the utility model, and not departing from aim and the scope of technical solutions of the utility model, it all should be encompassed in the middle of claim scope of the present utility model.
Claims (7)
1. utilize rotary kiln waste heat to improve a wind-warm syndrome device, it is characterized in that, comprise thermal-arrest chuck (1), its closed container that is hollow, is arranged on the outside of rotary kiln (2); Described thermal-arrest chuck (1) is provided with air inlet, and air inlet is connected with blower fan (4) by pipeline; Described thermal-arrest chuck (1) is also provided with air outlet, and air outlet is connected with coal injection pipe (3) by pipeline.
2. the rotary kiln waste heat that utilizes according to claim 1 improves a wind-warm syndrome device, it is characterized in that, described thermal-arrest chuck (1) is provided with two air inlets, and two air inlets are connected with the blower fan (4) of two different capacities respectively; Described thermal-arrest chuck (1) is provided with two air outlets, and two air outlets are connected with the He Nei air port, outer air port of coal injection pipe (3) respectively.
3. the rotary kiln waste heat that utilizes according to claim 1 improves a wind-warm syndrome device, it is characterized in that, on described thermal-arrest chuck (1), temperature, pressure measuring element and safety valve is installed, and by the temperature and pressure of DCS system control thermal-arrest chuck (1).
4. the rotary kiln waste heat that utilizes according to claim 1 improves a wind-warm syndrome device, it is characterized in that, the pressure signal of described thermal-arrest chuck (1) and blower fan (4) form PID closed-loop control, the stability with assurance system for wind pressure.
5. the rotary kiln waste heat that utilizes according to claim 1 improves a wind-warm syndrome device, it is characterized in that, described thermal-arrest chuck (1) is hollow semicircle cylindricality, and it is arranged on the outside of rotary kiln (2), apart from cylinder of rotary kiln 5～20cm; Its end face angle α is in the horizontal direction 15～40 °.
6. the rotary kiln waste heat that utilizes according to claim 1 improves a wind-warm syndrome device, it is characterized in that, described blower fan (4) adopts roots blower.
7. the rotary kiln waste heat that utilizes according to claim 1 improves a wind-warm syndrome device, it is characterized in that the inner back-shaped labyrinth form that adopts of described thermal-arrest chuck (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320851246.0U CN203657446U (en) | 2013-12-20 | 2013-12-20 | Device for increasing primary air temperature by waste heat of rotary kiln |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320851246.0U CN203657446U (en) | 2013-12-20 | 2013-12-20 | Device for increasing primary air temperature by waste heat of rotary kiln |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203657446U true CN203657446U (en) | 2014-06-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320851246.0U Expired - Fee Related CN203657446U (en) | 2013-12-20 | 2013-12-20 | Device for increasing primary air temperature by waste heat of rotary kiln |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203657446U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109012124A (en) * | 2018-09-26 | 2018-12-18 | 苏州西热节能环保技术有限公司 | A kind of dangerous waste incineration flue gas depth denitration purification system and method |
| CN115111912A (en) * | 2022-06-21 | 2022-09-27 | 中国中材国际工程股份有限公司 | Rotary kiln surface waste heat recycling device and method |
-
2013
- 2013-12-20 CN CN201320851246.0U patent/CN203657446U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109012124A (en) * | 2018-09-26 | 2018-12-18 | 苏州西热节能环保技术有限公司 | A kind of dangerous waste incineration flue gas depth denitration purification system and method |
| CN115111912A (en) * | 2022-06-21 | 2022-09-27 | 中国中材国际工程股份有限公司 | Rotary kiln surface waste heat recycling device and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140618 Termination date: 20151220 |
|
| EXPY | Termination of patent right or utility model |