CN1530346A - Hot-air drying method and drier for ceramic powder material - Google Patents
Hot-air drying method and drier for ceramic powder material Download PDFInfo
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- CN1530346A CN1530346A CNA031119808A CN03111980A CN1530346A CN 1530346 A CN1530346 A CN 1530346A CN A031119808 A CNA031119808 A CN A031119808A CN 03111980 A CN03111980 A CN 03111980A CN 1530346 A CN1530346 A CN 1530346A
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- high performance
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- performance fuel
- calorie fuels
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Abstract
A method and apparatus for drying ceramic powder by hot air features that the air is heated by high-caloricity fuel at the first in order to quickly raise up the temp, then by low-caloricity fuel in order to lower down cost, and finally by high-caloricity fuel. Its advantages are short time for raising up and lowering down temp and low cost.
Description
Background technology
The present invention relates to a kind of drying means and device, particularly a kind of hot gas drying method and apparatus that is used for ceramic pulverulent material.
Technical field
In the past, ceramics is when the dry powdery material, the box-type furnace of employing, tunnel stove etc. are arranged, before heating, earlier pulverulent material is placed container, the container that fills material is placed to add heat drying in the body of heater again, obviously, the heating surface area of material in body of heater is very little, the material that is positioned at the container center position is difficult for being heated, and its moisture also is difficult for distributing, and its shortcoming is conspicuous.Therefore, mostly use spraying hot gas drying stove at present, be that material enters drying oven inside with spray form, at the inner warm air that adopts of drying oven the spray form material is carried out heating, drying, material fully contacts with warm air in this spraying hot gas drying stove, be easy to thorough drying, therefore be used widely.
Hotblast stove is generally adopted in the supply of above-mentioned spraying hot gas drying stove-heated air, the fuel of this hotblast stove mostly adopts diesel oil, Sweet natural gas or liquefied gas, but the cost of these fuel is higher, also some directly adopts coal to burn, though cost is lower, but danger is bigger, and the impurity that directly burns coal and produced is more, easily the influence quality of material that is dried.Low calorie fuels industrial be low, the clean fuel of a kind of cost, once some factory attempted using water-gas to act as a fuel in spraying hot gas drying stove, but because spraying hot gas drying stove consumption fuel is big, use frequently, required intensification and temperature fall time are extremely short, and the calorific value of water-gas is lower, if need send bigger heat at short notice, then need bigger water-gas supply, and water-gas machine can't bear required fluctuation variable quantity, so these attempt all not succeeing.
Therefore, developing a kind of drying means that overcomes in the contradiction of high performance fuel and low calorie fuels being selected occur, is extremely significant.
Summary of the invention
The invention provides a kind of hot gas drying method and device that is used for ceramic pulverulent material, overcome the deficiency of spraying hot gas drying method on fuel is selected of prior art.
The present invention adopts warm air that ceramic pulverulent material is dried, use two kinds of fuel combustion heating when adding warm air, at first temperature is promoted to the temperature of baking needed rapidly with high performance fuel burning heating, then, gradually strengthen the low calorie fuels burning, the corresponding burning that progressively reduces high performance fuel simultaneously progressively substitutes out the fuel of high heating value.
In the stage that will stop to heat, progressively substitute the low calorie fuels fuel combustion with high performance fuel.
The hot gas drying stove that the above-mentioned hot gas drying method that is used for ceramic pulverulent material is adopted, comprise spray tower (1) and hotblast stove (2), spray tower (1) is provided with opening for feed (11), discharge port (12) and blast inlet (13), hotblast stove (2) is made up of high performance fuel hotblast stove (21) and low calorie fuels hotblast stove (22), the air outlet of high performance fuel hotblast stove (21) and low calorie fuels hotblast stove (22) communicates with the blast inlet (13) of spray tower, be provided with chain control device (3) between high performance fuel air intake valve (211) and the low calorie fuels air intake valve (221), the air input of high performance fuel and low calorie fuels can be carried out chain control by chain control device (3).
Described chain control device (3) comprises automatic control circuit (31) and temp probe (32), temp probe (32) is positioned at spray tower (1), and the temperature signal that automatic control circuit (31) transmits by temp probe (32) is controlled the opening and closing of low calorie fuels air intake valve (221) and high performance fuel air intake valve (211).
Described chain control device (3) is by the opening and closing of mechanical interlock mode by fixed proportion control low calorie fuels air intake valve (221) and high performance fuel air intake valve (211).
The present invention is owing to adopted two hotblast stoves, use the high performance fuel hotblast stove in the temperature rise period, in the smooth working process, use the low calorie fuels hotblast stove, therefore compare with prior art, fuel cost used in the present invention reduces, the time of heating up and lower the temperature can be remained in the short scope again, the present invention simultaneously is safe and reliable when using, and meets environmental protection requirement more.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Specific embodiment
One embodiment of the present of invention, with reference to Fig. 1, spraying hot gas drying stove comprises spray tower 1 and hotblast stove 2, spray tower 1 is provided with opening for feed 11, discharge port 12 and blast inlet 13, hotblast stove 2 is made up of high performance fuel hotblast stove 21 and low calorie fuels hotblast stove 22, the air outlet of high performance fuel hotblast stove 21 and low calorie fuels hotblast stove 22 communicates with the blast inlet of spray tower 13, be provided with chain control device 3 between high performance fuel air intake valve 211 and the low calorie fuels air intake valve 221, chain control device 3 comprises automatic control circuit 31 and temp probe 32, temp probe 32 is positioned at spray tower 1, and automatic control circuit 31 is by the chain control low calorie fuels of the temperature signal air intake valve 221 of temp probe 32 transmission and the opening and closing of high performance fuel air intake valve 211.
The high performance fuel that present embodiment adopts are Sweet natural gas, and low calorie fuels adopts water-gas.
When spraying hot gas drying stove is started working, high performance fuel air intake valve 211 is opened, high performance fuel hotblast stove 21 is started working, the main component of Sweet natural gas is a methane, its calorific value is bigger, therefore the temperature of high performance fuel hotblast stove 21 rises rapidly, makes the temperature in the spray tower 1 reach required numerical value;
Simultaneously, low calorie fuels air intake valve 221 is opened gradually, temperature in the spray tower 1 rises, temp probe 32 transmits this signal to automatic control circuit 31, automatic control circuit 31 cuts out gradually according to this signal control high performance fuel air intake valve 211, therefore the temperature in the spray tower 1 drops to required temperature again, when low calorie fuels intake valve 211 is opened fully, high performance fuel air intake valve 211 is closed just fully, this moment, spray tower 1 was temperature requiredly kept by low calorie fuels hotblast stove 22 fully, and it is the working order of fuel that the hot gas drying stove enters with water-gas.
When the hot gas drying stove is about to quit work, in the fluctuating quantity scope that the water-gas supply allows, slowly close low calorie fuels air intake valve 221, the temperature in the spray tower 1 also slowly reduces thereupon.
Embodiments of the invention two, be with the difference of embodiment one that the temperature-fall period of spray tower is not only as embodiment one and in the fluctuating quantity scope that the water-gas supply allows, slowly close low calorie fuels air intake valve 221 simply, but comprised following process:
Low calorie fuels air intake valve 221 is closed gradually, temperature in the spray tower 1 descends, temp probe 32 transmits corresponding signal to automatic control circuit 31, automatic control circuit 31 pursues according to this signal control high performance fuel intake valve 211 and opens, temperature rises to required temperature again in the spray tower 1, when low calorie fuels intake valve 211 cuts out fully, high performance fuel air intake valve 211 is opened just fully, this moment, spray tower 1 was temperature requiredly kept by high performance fuel hotblast stove 21 fully, and it is the working order of fuel that the hot gas drying stove enters with the Sweet natural gas.Close high performance fuel air intake valve 211 this moment, and the temperature of spray tower 1 reduces rapidly, and spraying hot gas drying stove quits work, thereby realized that spray tower 1 can lower the temperature rapidly when quitting work.
Embodiments of the invention three, be that with the difference of embodiment two chain control device 3 is by the opening and closing of mechanical interlock mode by fixed proportion control low calorie fuels air intake valve 221 and high performance fuel air intake valve 211, be that temperature-rise period is worked as low calorie fuels air intake valve 221 when opening gradually, by mechanical interlock high performance fuel air intake valve 211 is closed gradually, the action of low calorie fuels air intake valve 221 and high performance fuel air intake valve 211 is carried out by a certain percentage, so that control enters the warm air of spray tower 1 and remains on required temperature, thereby realize that temperature-rise period is transformed into 21 work of high performance fuel hotblast stove from low calorie fuels hotblast stove 22 stable working.The ratio of the action of low calorie fuels air intake valve 221 and high performance fuel air intake valve 211 should recently be determined according to the calorific value of used water-gas and Sweet natural gas, to guarantee that two heat summations that hotblast stove was sent keep constant in switching process, the calorific value of used water-gas is every cubic metre of 1200 kilocalorie in the present embodiment, the calorific value of Sweet natural gas is every cubic metre of 9600 kilocalorie, therefore the ratio of the action of low calorie fuels air intake valve 221 and Sweet natural gas air intake valve 211 should be eight to one, be eight units of the every increase of water-gas air input, the air input of Sweet natural gas should correspondingly reduce a unit.In like manner, being converted to 21 work of high performance fuel hotblast stove from 22 work of low calorie fuels hotblast stove in the temperature-fall period also can adopt the mode of above-mentioned mechanical interlock to carry out.
Claims (6)
1, a kind of hot gas drying method that is used for ceramic pulverulent material, adopt warm air that ceramic pulverulent material is dried, it is characterized in that: use two kinds of fuel combustion heating when adding warm air, at first temperature is promoted to the temperature of baking needed rapidly with high performance fuel burning heating, then, gradually strengthen the burning of low calorie fuels, the corresponding burning that progressively reduces high performance fuel simultaneously progressively substitutes out the fuel of high heating value.
2, a kind of hot gas drying method that is used for ceramic pulverulent material as claimed in claim 1 is characterized in that the process that adds warm air may further comprise the steps:
1) high performance fuel are with the supply burning of maximum, and air themperature rises rapidly, and reaches required working temperature;
2) low calorie fuels takes fire, and its supply strengthens gradually from minimum value in allowing fluctuation range, and the supply of high performance fuel correspondingly reduces, to keep constant temp;
3) supply of low calorie fuels reaches maximum, and the supply of high performance fuel is kept to zero.
3, a kind of hot gas drying method that is used for ceramic pulverulent material as claimed in claim 1 is characterized in that: in the stage that will stop to heat, progressively substitute the low calorie fuels burning with high performance fuel.
4, the hot gas drying stove that a kind of hot gas drying method that is used for ceramic pulverulent material as claimed in claim 1 is adopted, comprise spray tower (1) and hotblast stove (2), spray tower (1) is provided with opening for feed (11), discharge port (12) and blast inlet (13), it is characterized in that: hotblast stove (2) is made up of high performance fuel hotblast stove (21) and low calorie fuels hotblast stove (22), the air outlet of high performance fuel hotblast stove (21) and low calorie fuels hotblast stove (22) communicates with the blast inlet (13) of spray tower, be provided with chain control device (3) between high performance fuel air intake valve (211) and the low calorie fuels air intake valve (221), the air input of high performance fuel and low calorie fuels can be carried out chain control by chain control device (3).
5, hot gas drying stove as claimed in claim 4, it is characterized in that: described chain control device (3) comprises automatic control circuit (31) and temp probe (32), temp probe (32) is positioned at spray tower (1), and the temperature signal that automatic control circuit (31) transmits by temp probe (32) is controlled the opening and closing of low calorie fuels air intake valve (221) and high performance fuel air intake valve (211).
6, hot gas drying stove as claimed in claim 4 is characterized in that: described chain control device (3) is by the opening and closing of mechanical interlock mode by fixed proportion control low calorie fuels air intake valve (221) and high performance fuel air intake valve (211).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA031119808A CN1530346A (en) | 2003-03-13 | 2003-03-13 | Hot-air drying method and drier for ceramic powder material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA031119808A CN1530346A (en) | 2003-03-13 | 2003-03-13 | Hot-air drying method and drier for ceramic powder material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1530346A true CN1530346A (en) | 2004-09-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA031119808A Pending CN1530346A (en) | 2003-03-13 | 2003-03-13 | Hot-air drying method and drier for ceramic powder material |
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| Country | Link |
|---|---|
| CN (1) | CN1530346A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107092203A (en) * | 2017-05-19 | 2017-08-25 | 佛山市爱摩生科技有限公司 | A kind of spray tower autocontrol method and system |
| CN109520281A (en) * | 2018-12-19 | 2019-03-26 | 宝莲华新能源技术（上海）股份有限公司 | A kind of high temperature modification two-channel intelligent dryer |
| CN115999176A (en) * | 2022-12-30 | 2023-04-25 | 佛山市骏鹰环境能源科技有限公司 | Ceramic drying and granulating system |
-
2003
- 2003-03-13 CN CNA031119808A patent/CN1530346A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107092203A (en) * | 2017-05-19 | 2017-08-25 | 佛山市爱摩生科技有限公司 | A kind of spray tower autocontrol method and system |
| CN109520281A (en) * | 2018-12-19 | 2019-03-26 | 宝莲华新能源技术（上海）股份有限公司 | A kind of high temperature modification two-channel intelligent dryer |
| CN115999176A (en) * | 2022-12-30 | 2023-04-25 | 佛山市骏鹰环境能源科技有限公司 | Ceramic drying and granulating system |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |