CN105716404A - Drying device for cement raw slurry - Google Patents
Drying device for cement raw slurry Download PDFInfo
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- CN105716404A CN105716404A CN201410732551.7A CN201410732551A CN105716404A CN 105716404 A CN105716404 A CN 105716404A CN 201410732551 A CN201410732551 A CN 201410732551A CN 105716404 A CN105716404 A CN 105716404A
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- hothouse
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- cement raw
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Abstract
The invention relates to a drying device for cement raw slurry. The drying device comprises a pump for conveying the cement raw slurry and further comprises a drying chamber and a suspension preheater installed on the front face of a rotary kiln. An atomizer is arranged at the top of a drying chamber barrel. The pump for conveying the cement raw slurry communicates with the atomizer at the top of the drying chamber barrel. A hot air distributor is further arranged at the top of the drying chamber barrel. An air inlet of the hot air distributor is connected with an air blower through a pipeline. A gas heater is arranged between an air outlet of the air blower and the air inlet of the hot air distributor. An air outlet of the hot air distributor communicates with the drying chamber barrel. A flow guide device is arranged between the drying chamber barrel and a drying chamber cone. The drying chamber cone is provided with an air outlet connected with an induced draft fan through a pipeline. A cement raw slurry conveyor is arranged between a discharging port of the drying chamber cone and a feeding port of the suspension preheater. The drying device is high in drying efficiency, so that the clinker firing heat consumption is greatly reduced.
Description
Technical field
The present invention relates to field of cement production, be specifically related to the drying device of a kind of cement raw slurry.
Background technology
In order to be able to so-called wet production clinker, having many known methods, according to these methods, wet cement raw material, through special pretreatment so as to be dewatered to enough degree before entering kiln.So, needed for roasting process, total amount of heat will be reduced.The existing technique that cement raw slurry is processed into grog is usually by the cement raw slurry material cake that mass fraction is 32%～34% by pressure filter filter-press dehydration Cheng Shui, it is re-fed into wet process rotary kiln mature calcined material, this technique remains the features such as conventional wet technological process is simple, owing to adding mechanical dehydration device, this making in kiln raw material that the mass fraction of water is for be dropped to 32%～34% by 55%, sinter leaching heat consumption decreases.But the shortcoming of conventional wet technique does not have radical change, and sinter leaching heat consumption is still high, and kiln unit volume yields poorly；Single machine production ability is little can not maximize, and the scale and benefit of enterprise are difficult to.
Summary of the invention
It is an object of the invention to for the deficiencies in the prior art, it is provided that the drying device of a kind of cement raw slurry, the drying device drying efficiency of this cement raw slurry is high, and moment just can evaporate the moisture of cement raw slurry 95%-98% so that sinter leaching heat consumption is substantially reduced.
The object of the present invention is achieved like this: the drying device of a kind of cement raw slurry, pump including conveying cement raw slurry, also include hothouse and be arranged on the suspended preheater before rotary kiln, described hothouse is made up of cylinder and cone two parts, hothouse cylinder top is provided with nebulizer, the pump of described conveying cement raw slurry connects with the nebulizer at hothouse cylinder top, described hothouse cylinder top is additionally provided with hot-air distributor, the air inlet of described hot-air distributor is connected by pipeline and an aerator, it is provided with gas heater between air outlet and the air inlet of hot-air distributor of described aerator, the air outlet of described hot-air distributor communicates with hothouse cylinder, it is provided with guiding device between described hothouse cylinder and hothouse cone, described guiding device is provided with in cellular pod apertures, described hothouse cone is provided with air outlet, this air outlet is connected by pipeline and an air-introduced machine, it is provided with cyclone separator between air inlet and the hothouse cone of described air-introduced machine, described cyclone separator lower end is provided with material collector, the vertex of a cone of described hothouse cone is discharging opening, between discharging opening and the charging aperture of suspended preheater of hothouse cone, cement slurry conveyer is set, described cement slurry conveyer one end is in the discharging opening of hothouse cone base, the other end extends to the charging aperture of suspended preheater.
Described discharging opening is provided with valve.
Described gas heater is electric body heater or steam gas heater.
The air outlet of described air-introduced machine is provided with emission-control equipment,
Described hot air distribution device is connected on hothouse upper frame with Type of Welding.
Described hot-air distributor includes being centrifugal hot-air channel and the insulation cone loading nebulizer, and described nebulizer is arranged in the insulation cone of hot-air distributor.
The invention has the beneficial effects as follows: owing to described hothouse cylinder top is provided with hot-air distributor, for controlling to flow to the air-flow of hothouse, make the cement raw slurry being atomized form specific flow curve in hothouse with optimum state contact drying gas.Hot blast tangential direction enters hot-air distributor, and by porous plate, under guide plate air disperser effect, hot blast enters hothouse in the shape of a spiral equably, and gas flow shape can be adjusted by guide plate distributor.So same hot blast and material contact area have been increased by several times of heat exchanges, and drying efficiency is high.Proportion according to material and character can accelerate or the slow down speed of whirlwind thus can make heat exchange area increase or reduce, such that it is able to adjust dry materials degree as required.
Being provided with guiding device between described hothouse cylinder and hothouse cone, described guiding device is provided with in cellular pod apertures.The hot blast being rotated down hits guiding device with very strong strength, hot blast becomes axial supply by guiding device in cellular pod apertures, hot blast rectification after-blow makes the material being attached to tower body come off to tower body, because the hot blast that the stop of guiding device also makes rotation no longer turns round, when making mist decline, it is heated evenly, makes the thermal change of dry cement raw material can maintain in Min., therefore improve the quality of dry cement raw material.
Rate of drying of the present invention is fast, and cement raw slurry amasss through atomization rear surface and is greatly increased, in hot-air flow, moment just can evaporate the moisture of 95%-98%, completing only to need the several seconds, drying efficiency is high, and cement raw slurry is dried process drying time, produce dry cement raw material, then it is routed directly to suspended preheater to preheat, for next step roasting, produces grog, this structure makes sinter leaching heat consumption be substantially reduced, and kiln unit volume yield increases；Single machine production ability is made to realize maximizing, it is achieved the scale and benefit of enterprise.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention.
In accompanying drawing, 1 is pump, and 2 is suspended preheater, 3 is hothouse, and 4 is cylinder, and 5 is nebulizer, 6 is hot-air distributor, and 7 is aerator, and 8 is gas heater, 9 is cone, and 10 is guiding device, and 11 is air-introduced machine, 12 is cyclone separator, 13 is material collector, and 14 is cement slurry conveyer, and 15 is emission-control equipment.
Detailed description of the invention
Referring to Fig. 1, the drying device of a kind of cement raw slurry, including the pump 1 of conveying cement raw slurry, also includes hothouse 3 and is arranged on the suspended preheater 2 before rotary kiln, described hothouse is made up of cylinder 4 and cone 9 two parts, and hothouse cylinder top is provided with nebulizer 5.Described nebulizer 5 is high-speed hydraulic nebulizer.The nebulizer of certain present invention can also be high speed centrifugal atomization device or high-pressure atomizer etc..The pump of described conveying cement raw slurry connects with the nebulizer at hothouse cylinder 4 top, described hothouse cylinder top is additionally provided with hot-air distributor, for controlling to flow to the air-flow of hothouse, the cement raw slurry being atomized is made to form specific flow curve in hothouse with optimum state contact drying gas.Hot blast tangential direction enters hot-air distributor, and by porous plate, under guide plate air disperser effect, hot blast enters hothouse in the shape of a spiral equably, and gas flow shape can be adjusted by guide plate distributor.So same hot blast and material contact area have been increased by several times of heat exchanges, and drying efficiency is high.Proportion according to material and character can accelerate or the slow down speed of whirlwind thus can make heat exchange area increase or reduce, such that it is able to adjust dry materials degree as required.In order to prevent the wet stock being attached on tower top by high-temperature-coked, it is provided with three corner channels of logical people's cold wind at tower top place.Described hot-air distributor 6 is DAR type hot-air distributor.Certainly this hot-air distributor can also be DHS type hot-air distributor.It is the hot-air channel of centrifugal (spiral type) that described hot-air distributor 6 includes, load the insulation cone of nebulizer 5 and the water diversion part for regulating, described nebulizer is arranged in the insulation cone of hot-air distributor, and the water diversion part of adjustment is all arranged on below insulation cone.The hot-air channel of hot air distribution device, its cross section is square, overall in spiral type, more and more less on the airflow direction of dry gas, makes gas enter hothouse uniformly across distributing damper.Described hot air distribution device is connected on hothouse upper frame with Type of Welding.The air inlet of described hot-air distributor 6 is connected by pipeline and an aerator 7.It is provided with gas heater 8 between air outlet and the air inlet of hot-air distributor of described aerator.Described gas heater 8 is electric body heater or steam gas heater.The air outlet of described hot-air distributor 6 communicates with hothouse cylinder 4, is provided with guiding device 10 between described hothouse cylinder 4 and hothouse cone 9, and described guiding device 10 is provided with in cellular pod apertures.The hot blast being rotated down hits guiding device with very strong strength, hot blast becomes axial supply by guiding device in cellular pod apertures, hot blast rectification after-blow makes the material being attached to tower body come off to tower body, because the hot blast that the stop of guiding device also makes rotation no longer turns round, when making mist decline, it is heated evenly, makes the thermal change of dry cement raw material can maintain in Min., therefore improve the quality of dry cement raw material.Described hothouse cone is provided with air outlet, this air outlet is connected by pipeline and an air-introduced machine 11, it is provided with cyclone separator 12 between air inlet and the hothouse cone of described air-introduced machine, described cyclone separator lower end is provided with material collector 13, the vertex of a cone of described hothouse cone is discharging opening, between discharging opening and the charging aperture of suspended preheater of hothouse cone, cement slurry conveyer 14 is set, described cement slurry conveyer one end is in the discharging opening of hothouse cone base, and the other end extends to the charging aperture of suspended preheater.Described discharging opening is provided with valve.The air outlet of described air-introduced machine is provided with emission-control equipment 15.
The work process of the present invention: air, through filtering and heating, enters the air distributor at hothouse cylinder top, and hot-air is in the shape of a spiral evenly into hothouse.Cement raw slurry becomes imperceptible misty liquid droplets through atomizer spray.Misty liquid droplets and hot-air flowing contacts, and moisture news speed evaporation can dry as dry cement raw material within the extremely short time.Dried dry cement raw material are fallen bottom tower body, are routed directly to suspended preheater by cement slurry conveyer and preheat, and for next step roasting, produce grog.Dry cement raw material are exported by bottom drying tower and in cyclone separator continuously.Waste gas is purified emptying by air-introduced machine, emission-control equipment.
Claims (6)
1. the drying device of a cement raw slurry, pump including conveying cement raw slurry, it is characterized in that: also include hothouse and be arranged on the suspended preheater before rotary kiln, described hothouse is made up of cylinder and cone two parts, hothouse cylinder top is provided with nebulizer, the pump of described conveying cement raw slurry connects with the nebulizer at hothouse cylinder top, described hothouse cylinder top is additionally provided with hot-air distributor, the air inlet of described hot-air distributor is connected by pipeline and an aerator, it is provided with gas heater between air outlet and the air inlet of hot-air distributor of described aerator, the air outlet of described hot-air distributor communicates with hothouse cylinder, it is provided with guiding device between described hothouse cylinder and hothouse cone, described guiding device is provided with in cellular pod apertures, described hothouse cone is provided with air outlet, this air outlet is connected by pipeline and an air-introduced machine, it is provided with cyclone separator between air inlet and the hothouse cone of described air-introduced machine, described cyclone separator lower end is provided with material collector, the vertex of a cone of described hothouse cone is discharging opening, between discharging opening and the charging aperture of suspended preheater of hothouse cone, cement slurry conveyer is set, described cement slurry conveyer one end is in the discharging opening of hothouse cone base, the other end extends to the charging aperture of suspended preheater.
2. the drying device of cement raw slurry according to claim 1, it is characterised in that: described discharging opening is provided with valve.
3. the drying device of cement raw slurry according to claim 1, it is characterised in that: described gas heater is electric body heater or steam gas heater.
4. the drying device of cement raw slurry according to claim 1, it is characterised in that: the air outlet of described air-introduced machine is provided with emission-control equipment.
5. the drying device of cement raw slurry according to claim 1, it is characterised in that: described hot air distribution device is connected on hothouse upper frame with Type of Welding.
6. the drying device of cement raw slurry according to claim 1 or 5, it is characterised in that: described hot-air distributor includes being centrifugal hot-air channel and the insulation cone loading nebulizer, and described nebulizer is arranged in the insulation cone of hot-air distributor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410732551.7A CN105716404A (en) | 2014-12-05 | 2014-12-05 | Drying device for cement raw slurry |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410732551.7A CN105716404A (en) | 2014-12-05 | 2014-12-05 | Drying device for cement raw slurry |
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| Publication Number | Publication Date |
|---|---|
| CN105716404A true CN105716404A (en) | 2016-06-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410732551.7A Pending CN105716404A (en) | 2014-12-05 | 2014-12-05 | Drying device for cement raw slurry |
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| CN (1) | CN105716404A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112479544A (en) * | 2019-09-12 | 2021-03-12 | 广州新致晟环保科技有限公司 | Vertical sludge drier and method for drying sludge by using same |
| EP3737900A4 (en) * | 2018-01-16 | 2022-03-16 | Waister AS | Modular system and process of drying solids and liquid-solid mixtures |
| CN115682637A (en) * | 2022-09-22 | 2023-02-03 | 意大利铂碧环保科技公司 | Mud drying process system |
-
2014
- 2014-12-05 CN CN201410732551.7A patent/CN105716404A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3737900A4 (en) * | 2018-01-16 | 2022-03-16 | Waister AS | Modular system and process of drying solids and liquid-solid mixtures |
| CN112479544A (en) * | 2019-09-12 | 2021-03-12 | 广州新致晟环保科技有限公司 | Vertical sludge drier and method for drying sludge by using same |
| CN115682637A (en) * | 2022-09-22 | 2023-02-03 | 意大利铂碧环保科技公司 | Mud drying process system |
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Application publication date: 20160629 |
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| WD01 | Invention patent application deemed withdrawn after publication |