CN1915883A - Technique for airflow drying, and calcining desulfurized gypsum - Google Patents
Technique for airflow drying, and calcining desulfurized gypsum Download PDFInfo
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- CN1915883A CN1915883A CN 200610068771 CN200610068771A CN1915883A CN 1915883 A CN1915883 A CN 1915883A CN 200610068771 CN200610068771 CN 200610068771 CN 200610068771 A CN200610068771 A CN 200610068771A CN 1915883 A CN1915883 A CN 1915883A
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Abstract
This invention relates to a technique for air-flow-drying and calcining desulfurized gypsum. The technique comprises: (1) conveying desulfurized gypsum by a conveyer to a storage house for storage, then conveying into a main drying machine, and introducing hot wind generated by the heat source into the main drying machine; (2) transferring heat between desulfurized gypsum and the hot wind in the main drying machine, and pulverizing desulfurized gypsum with a pulverizing unit in the drying machine to promote heat transfer; (3) separating the materials from the wet air by a deduster; (4) recovering heat from the wet air, and returning to the heat source for recycle. The technique has such advantage as low energy consumption.
Description
Technical field
The present invention relates to a kind of gypsum drying, and calcining skill, specifically a kind of technique for airflow drying, and calcining desulfurized gypsum.
Background technology
We know, frying pan technology or the large-scale steam rotary calcination systems of adopting of the oven dry of desulfurated plaster calcining at present more, and the frying pan system is traditional gypsum calcination technology, technology is relatively backward, and power consumption is big, yields poorly, and is not suitable for large-scale gypsum calcination enterprise and adopts; And the steam rotary desulphurization gypsum calcination system, output is big, but the cost height, not only aspect facility investment, or the workshop building aspect, the cost of input is all very high.At the equipment run duration, operational difficulty, if operation or equipment quality go wrong, the expense of cleaning so or repairing is also very high.And the operation energy consumption of equipment is also than higher.
Summary of the invention
The present invention is for overcoming above-mentioned the deficiencies in the prior art, and a kind of level of automation height, technique for airflow drying, and calcining desulfurized gypsum that cost is low are provided.
The objective of the invention is to adopt following technical proposals to realize: a kind of technique for airflow drying, and calcining desulfurized gypsum, form by thermal source, raw material conveying, drying materials pulverizing, dedusting, five parts of hot air circulation; Desulfurated plaster enters the desulfurated plaster feed bin by transfer roller, keeps in, and then through transfer roller, enters the drying materials crushing system; Thermal source can adopt coal furnace, gas furnace, oil oven, perhaps steam heat-exchanging, and thermal source is sent hot blast, enters main drying machine, the airflow dryer that native system master drying machine adopts band to break up from the bottom of drying materials crushing system; After desulfurated plaster enters main drying machine, contact with hot blast, carry out heat and mass, constantly deviate from moisture, reach oven dry incinerating effect fast in dryer inner; Reach oven dry and calcine the dust-removal system that the material of effect enters the later stage, through the separation of dust-removal system, finished product materials is discharged the finished product materials packaging system that enters the later stage from the below of dust-removal system; And the blower fan by the dust-removal system back, tail gas is not the system of discharge at once, but enter a flue gas heat exchange device, the conveying of blower fan, this flue gas heat exchange device of air admission carries out heat exchange with this tail gas, air after the heat exchange enters thermal source again, in system, have an effect, can save the energy like this, lower energy consumption.
Heat source system comprises valving, and interchanger, steam system and return water system, thermal source also can be decided on local energy situation by replacements such as coal furnace, gas furnace, oil ovens;
Source material delivery system comprises transfer roller, gypsum feed bin, desulfurated plaster apparatus for temporary storage, enters the transfer roller of dehumidification system, and material is stored by conveyor delivery to desulfurated plaster apparatus for temporary storage earlier, enters the subsequent drying system via transfer roller then.
The drying materials calcination system comprises breaks up device, airflow drying calcining machine after material enters main drying machine, is driven by the high-pressure hot wind that comes up below, up flow, contact with hot blast, turbulent flow is carried out heat and mass simultaneously, size is bigger, the material that weight ratio is bigger falls into the device of breaing up below the main drying machine, is driven by high-pressure hot wind after the fragmentation to enter main drying machine and carry out heat and mass again, reaches oven dry incinerating effect.
Dust-removal system comprises induced draft fan, fly-ash separator, induced draft fan is a high pressure positive blower, drives hot blast to follow-up dust-removal system flow at high speed, and fly-ash separator can be tornado dust collector, also can be sack cleaner, also can be the array configuration of two kinds of fly-ash separators, with hot blast and feed separation, hot blast is driven by induced draft fan and enters hot air circulating system, material is discharged by the discharge device of fly-ash separator, enters the finished product district.
Hot air circulating system comprises interchanger, gas blower, the hot blast of being come by dust collecting system induced draft fan band enters interchanger, the air of coming with the gas blower band carries out indirect heat exchange, heat has just sent air to like this, this air admission gas blower enters thermal source then, air admission interchanger after the heat exchange can be saved sizable energy like this, has reduced energy consumption; And the hot blast that dust collecting system is come is discharged through behind the interchanger, so both the moisture in the system can be discharged, and can reduce system energy consumption again.
The invention has the beneficial effects as follows: characteristics such as energy consumption is low, output is high, cost is low, easy to operate, maintenance of equipment is convenient.
Description of drawings
Accompanying drawing is a process flow sheet of the present invention.
1. transfer roller I wherein, 2. desulfurated plaster apparatus for temporary storage, 3. transfer roller II, 4. steam valve group, 5. vapor heat exchanger is 6. broken up device, 7. main drying machine, 8. fly-ash separator, 9. induced draft fan, 10. flue gas heat exchange device, 11. gas blowers.
Embodiment
The present invention is further described below in conjunction with drawings and Examples.
Embodiment: as shown in drawings, desulfurated plaster enters the desulfurated plaster feed bin by transfer roller I1, keeps in, and then through transfer roller II3, enters the drying materials crushing system; Thermal source can adopt coal furnace, gas furnace, oil oven, perhaps steam heat-exchanging, and thermal source is sent hot blast, enters main drying machine 7 from the bottom of drying materials crushing system, and native system master drying machine adopts band to break up the airflow dryer of device 6; After desulfurated plaster enters main drying machine 7, contact with hot blast, carry out heat and mass, constantly deviate from moisture, reach oven dry incinerating effect fast in drying machine 7 inside; Reach oven dry and calcine the dust-removal system that the material of effect enters the later stage, through the separation of dust-removal system, finished product materials is discharged the finished product materials packaging system that enters the later stage from the below of dust-removal system; And the induced draft fan 9 by the dust-removal system back, tail gas is not the system of discharge at once, but enter a flue gas heat exchange device 10, by the conveying of gas blower 11, this flue gas heat exchange device 10 of air admission carries out heat exchange with this tail gas, air after the heat exchange enters thermal source again, in system, have an effect, can save the energy like this, lower energy consumption.
Heat source system comprises steam valve group 4, and vapor heat exchanger 5, steam system and return water system, thermal source also can be decided on local energy situation by replacements such as coal furnace, gas furnace, oil ovens;
Source material delivery system comprises transfer roller I1, desulfurated plaster apparatus for temporary storage 2, enters the transfer roller II3 of dehumidification system, and material is delivered to 2 storages of desulfurated plaster apparatus for temporary storage by transfer roller I1 earlier, enters the subsequent drying system via transfer roller II3 then.
The drying materials calcination system comprises breaks up device 6, airflow drying calcining machine after material enters main drying machine 7, is driven by the high-pressure hot wind that comes up below, up flow, contact with hot blast, turbulent flow is carried out heat and mass simultaneously, size is bigger, the material that weight ratio is bigger falls into breaks up device 6 below the main drying machine 7, is driven by high-pressure hot wind after the fragmentation to enter main drying machine 7 and carry out heat and mass again, reaches oven dry incinerating effect.
Dust-removal system comprises induced draft fan 9, fly-ash separator 8, induced draft fan 9 is a high pressure positive blower, drives hot blast to follow-up dust-removal system flow at high speed, and fly-ash separator 8 can be tornado dust collector, also can be sack cleaner, also can be the array configuration of two kinds of fly-ash separators, with hot blast and feed separation, hot blast is driven by induced draft fan 9 and enters hot air circulating system, material is discharged by the discharge device of fly-ash separator 8, enters the finished product district.
Hot air circulating system comprises flue gas heat exchange device 10 and gas blower 11, the hot blast of being come by dust collecting system induced draft fan 9 bands enters flue gas heat exchange device 10, the air of coming with gas blower 11 bands carries out indirect heat exchange, heat has just sent air to like this, this air admission gas blower 11 enters thermal source then, air admission flue gas heat exchange device 10 after the heat exchange can be saved sizable energy like this, has reduced energy consumption; And the hot blast that dust collecting system is come is discharged through flue gas heat exchange device 10 backs, so both the moisture in the system can be discharged, and can reduce system energy consumption again.
Claims (4)
1. technique for airflow drying, and calcining desulfurized gypsum is characterized in that: it is made up of thermal source, raw material conveying, drying materials pulverizing, dedusting, five parts of hot air circulation, and its processing step is as follows:
A. raw material is carried desulfurated plaster to be transported to temporary feed bin by handling equipment to keep in, and then carries desulfurated plaster to enter main drying machine by handling equipment;
B. thermal source carries thermal source to send hot blast, enters main drying machine from the bottom of drying materials crushing system;
C. drying materials pulverizing desulfurated plaster carries out heat and mass with hot blast in main drying machine, and the device of breaing up of main dryer inner carries out fragmentation with desulfurated plaster simultaneously, strengthens heat and mass;
D. the dedusting cleaning apparatus is with wet air and feed separation, and finished product materials is discharged the finished product materials packaging system that enters the later stage from the below of dust-removal system;
E. the wet air among the hot air circulation step D enters the flue gas heat exchange device by the induced draft fan of dust-removal system back, conveying by gas blower, this flue gas heat exchange device of air admission, carry out heat exchange with wet air, wet air after the heat exchange is discharged through the flue gas heat exchange device, air after the heat exchange enters thermal source again, repeats above processing step.
2. technique for airflow drying, and calcining desulfurized gypsum according to claim 1 is characterized in that: described main drying machine is to be provided with the airflow drying calcining machine that material is broken up device in the lower end of opening for feed.
3. technique for airflow drying, and calcining desulfurized gypsum according to claim 1 is characterized in that: described thermal source can be steam heat-exchanging or flue gas heat exchange or coal furnace or oil oven.
4. technique for airflow drying, and calcining desulfurized gypsum according to claim 1 is characterized in that: described cleaning apparatus is the array configuration of tornado dust collector or sack cleaner or two kinds of fly-ash separators.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200610068771XA CN100434380C (en) | 2006-09-06 | 2006-09-06 | Technique for airflow drying, and calcining desulfurized gypsum |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200610068771XA CN100434380C (en) | 2006-09-06 | 2006-09-06 | Technique for airflow drying, and calcining desulfurized gypsum |
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| Publication Number | Publication Date |
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| CN1915883A true CN1915883A (en) | 2007-02-21 |
| CN100434380C CN100434380C (en) | 2008-11-19 |
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| CNB200610068771XA Active CN100434380C (en) | 2006-09-06 | 2006-09-06 | Technique for airflow drying, and calcining desulfurized gypsum |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101798193A (en) * | 2010-03-19 | 2010-08-11 | 王强 | Electrical heating method for chemical gypsum |
| CN101823851A (en) * | 2010-04-26 | 2010-09-08 | 泰山石膏股份有限公司 | Method for rapidly drying desulfuration gypsum by utilizing residual heat of heat-conducting oil furnace and special equipment thereof |
| CN101781097B (en) * | 2009-01-16 | 2012-05-09 | 北新集团建材股份有限公司 | Airflow desulphurization gypsum calcination system |
| CN102807334A (en) * | 2011-06-02 | 2012-12-05 | 北新集团建材股份有限公司 | Control system of natural gas for calcining desulfurized gypsum |
| CN101844879B (en) * | 2010-02-04 | 2013-09-04 | 南京创能电力科技开发有限公司 | Device for producing sulfuric acid and cement by decomposing and calcining gypsum |
| CN106630710A (en) * | 2016-10-17 | 2017-05-10 | 山东先罗新型建材科技开发有限公司 | Novel building plaster calcining process and processing equipment therefor |
| CN108569853A (en) * | 2018-07-19 | 2018-09-25 | 西安建筑科技大学 | A kind of industry by-product gypsum dewatering system and technique |
| CN111333353A (en) * | 2019-08-29 | 2020-06-26 | 贵州省环福新材料有限公司 | Industrial byproduct gypsum treatment system |
| WO2021068499A1 (en) * | 2019-10-07 | 2021-04-15 | 南京凯盛国际工程有限公司 | Anhydrite preparation system |
| CN112876110A (en) * | 2021-02-02 | 2021-06-01 | 茌平信源环保建材有限公司 | Gypsum powder production system and process |
-
2006
- 2006-09-06 CN CNB200610068771XA patent/CN100434380C/en active Active
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101781097B (en) * | 2009-01-16 | 2012-05-09 | 北新集团建材股份有限公司 | Airflow desulphurization gypsum calcination system |
| CN101844879B (en) * | 2010-02-04 | 2013-09-04 | 南京创能电力科技开发有限公司 | Device for producing sulfuric acid and cement by decomposing and calcining gypsum |
| CN101798193A (en) * | 2010-03-19 | 2010-08-11 | 王强 | Electrical heating method for chemical gypsum |
| CN101823851A (en) * | 2010-04-26 | 2010-09-08 | 泰山石膏股份有限公司 | Method for rapidly drying desulfuration gypsum by utilizing residual heat of heat-conducting oil furnace and special equipment thereof |
| CN102807334A (en) * | 2011-06-02 | 2012-12-05 | 北新集团建材股份有限公司 | Control system of natural gas for calcining desulfurized gypsum |
| CN106630710A (en) * | 2016-10-17 | 2017-05-10 | 山东先罗新型建材科技开发有限公司 | Novel building plaster calcining process and processing equipment therefor |
| CN108569853A (en) * | 2018-07-19 | 2018-09-25 | 西安建筑科技大学 | A kind of industry by-product gypsum dewatering system and technique |
| CN108569853B (en) * | 2018-07-19 | 2023-10-31 | 西安建筑科技大学 | Industrial byproduct gypsum dehydration system and process |
| CN111333353A (en) * | 2019-08-29 | 2020-06-26 | 贵州省环福新材料有限公司 | Industrial byproduct gypsum treatment system |
| WO2021068499A1 (en) * | 2019-10-07 | 2021-04-15 | 南京凯盛国际工程有限公司 | Anhydrite preparation system |
| CN112876110A (en) * | 2021-02-02 | 2021-06-01 | 茌平信源环保建材有限公司 | Gypsum powder production system and process |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100434380C (en) | 2008-11-19 |
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Owner name: SHANDONG TIANLI DRYING CO., LTD. Free format text: FORMER NAME: TIANLI DRYING EQUIPMENT CO., LTD., SHANDONG |
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| CP03 | Change of name, title or address |
Address after: 250101, Shandong Province, Ji'nan hi tech Zone, No. 554 Feng Feng Road, environmental science and Technology Park, building 8, Feng Feng building, room 230 Patentee after: Shandong Tianli Drying Co., Ltd. Address before: 250014 Shandong Province, Lixia District of Ji'nan city ten Road East Shouke Hospital Road No. 19 Patentee before: Tianli Drying Equipment Co., Ltd., Shandong |