CN203244796U - Spray drying device for producing solid product by smoke and hot air - Google Patents
Spray drying device for producing solid product by smoke and hot air Download PDFInfo
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- CN203244796U CN203244796U CN 201320229109 CN201320229109U CN203244796U CN 203244796 U CN203244796 U CN 203244796U CN 201320229109 CN201320229109 CN 201320229109 CN 201320229109 U CN201320229109 U CN 201320229109U CN 203244796 U CN203244796 U CN 203244796U
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Abstract
The utility model discloses a spray drying device for producing a solid product by smoke and hot air. A fluidized bed furnace (2) is connected with a first air blower (1) and an air heat exchanger (3); the air heat exchanger (3) is connected with a dust collector (4); the dust collector (4) is connected in parallel with a first air door (16), a second air door (26) and a third air door (36) through a first induced draft fan (5); the first air door (16) is connected with a spray drying tower (10); the spray drying tower (10) is connected with a cyclone separator (11), a first wet dust collector (12), a second induced draft fan (13) and a chimney (15); the air heat exchanger (3) is connected with an air preheater (9); the air preheater (9) is connected with an air filter (7) through a second air blower (8); the air heat exchanger (3) is connected with the spray drying tower (10) through a fourth air door (6); the second air door (26) is connected with the air preheater (9); the air preheater (9) is connected with a second wet dust collector (14); the second wet dust collector (14) is connected with the chimney (15); the third air door (36) is connected with the fluidized bed furnace (2). The spray drying device has the advantages of high energy utilization rate, energy conservation and environmental protection.
Description
Technical field
The utility model relates to a kind of spray-drying installation, particularly relates to the spray-drying installation that a kind of available flue gas and hot-air are produced solid product.
Background technology
For the drying of producing solid product, such as the spray-drying as the polyaluminium chloride of water treatment agent, 75% polyaluminium chloride product is to adopt cylinder drying to produce, when adopting cylinder drying to produce, the heating system flue gas need to carry out separately desulfurization and dust removal process, heat utilization efficiency is low, and energy consumption is high, and production cost is high.Only having 25% polyaluminium chloride product is to adopt spray drying process to produce, even also still have the energy saving space but adopt spray drying process to produce, because the whole nation 90% adopts the enterprise of spray drying process production all to use chain furnace as hot-blast stove at present, adopt the heat supply of this hot-blast stove coal, the coal combustion utilization rate only has 85%～88%, the chain Thermal Efficiency of Hot Blast Stoves also only has 65%～70%, and the burning of coal calorific value required to reach more than the 5000kcal/kg, the body of heater combustion process can't desulfurization, need independent desulfation dust-extraction device, heat utilization efficiency is low, and energy consumption is high, and production cost is also high.
In fact, the boiling furnace combustion technology is very ripe, coal-fired combustion utilization efficiency is up to 98%～99%, and can adapt to the coal of different combustion heat values, coal calorific value even be lower than 3000kcal/kg and also can use, and can be by adding the method desulfurization of agstone in combustion process, the solid desulfurization degree can reach 60%, and desulphurization cost is low.
The utility model content
Technical problem to be solved in the utility model provides the available flue gas of a kind of energy utilization rate height, energy-conserving and environment-protective and the spray-drying installation that hot-air is produced solid product.
In order to solve the problems of the technologies described above, the available flue gas that the utility model provides and hot-air are produced the spray-drying installation of solid product, the air inlet of fluidized bed furnace is connected with the first air blast, an air outlet of described fluidized bed furnace is connected with the thermal source import of air heat exchanger, the thermal source outlet of described air heat exchanger connects deduster, described deduster is parallel with the first air door by the outlet of the first air-introduced machine, the second air door and the 3rd air door, described the first air door is connected with spray drying tower, the air outlet of described spray drying tower is connected with cyclone separator in turn, the first wet scrubber, the second air-introduced machine and chimney, the heat exchange import of described air heat exchanger is connected with the heat exchange of air preheater outlet, the heat exchange import of described air preheater connects air cleaner by the second air blast, the heat exchange outlet of described air heat exchanger connects described spray drying tower by the 4th air door, described the second air door is connected with the thermal source import of described air preheater, the thermal source outlet of described air preheater is connected with the second wet scrubber, described the second wet scrubber is connected with described chimney, and described the 3rd air door is connected with described fluidized bed furnace.
Adopt polyaluminium chloride water purification agent drying production method and the device thereof of technique scheme, the high-temperature flue gas that fluidized bed furnace produces is controlled by the first air door, the second air door, the 3rd air door and the 4th air door as required, the first air door, the second air door, the 3rd air door and the 4th air door carry out stacked switch according to need of production, open such as one, several closing in addition, or in addition several combinations pass is opened in several combinations.Fluidized bed furnace replaces the heat supply of traditional chain bar oven, can make coal-fired combustion utilization efficiency bring up to 98% from 85%-88%, and desulfurization degree is increased to 60% from 0%, and produces 800 ℃～1000 ℃ high-temperature flue gas; Be incubated preferably under the condition, total heat utilization efficiency of fluidized bed furnace always can reach 93%; Save coal-fired and traditional heat supply method ton product and reach 60kg above (calculate with the 5000kcal/kg coal, lower with); Produce middle-grade quality and high-quality powdery polyaluminium chloride product in the time of can making spray drying tower 10, product-mix is more reasonable, and energy consumption is lower, and the average fire coal ton product of saving reaches 70kg, and without the sulfurous gas discharging, production process is environmental protection more.
The utility model technology has following characteristics: 1, in dry run, the flue gas that fluidized bed furnace is produced reuses to greatest extent, make heating system can accomplish central heating, reduced investment not only, take up an area few, and energy-saving efficiency is high, and effect of coal saving is obvious, produces the ton solid product and can save coal-fired 60～90kg; 2, in the heat supplying process, using the chain hot-blast stove instead fluidized bed furnace substitutes, coal-fired efficiency of combustion brings up to 98% from 85%～88%, when 3, adopting hot-air to carry out spray-drying as thermal source, 50% is recycling behind the flue gas heat exchange, and other 50% carries out the secondary utilization, and the flue gas after secondary utilizes just discharges through desulfurization and dedusting, so not only heat utilization efficiency is high, and production process is because more environmental protection is discharged in minimizing; When adopting flue gas to carry out spray-drying as thermal source, hot air system is stopped using, directly enter spray drying tower behind the flue gas ash removal, heat utilization efficiency is high, and in the production process except the fluidized bed furnace desulfurization, product is also as the raw material of desulfurization in the drying tower, so fume emission can sulfur-bearing, and flue gas utilization is more scientific more reasonable.4, dry production system of the present utility model can be produced height, middle-grade polyaluminium chloride product simultaneously, and the process units utilization rate of raw materials is higher, and economy is stronger.5, the utility model is applicable to the drying production such as other powdery solid products such as polyaluminium chloride, bodied ferric sulfate, calcium carbonate, phosphate and washing powder.
In sum, the utility model is the available flue gas of a kind of energy utilization rate height, energy-conserving and environment-protective and the spray-drying installation that hot-air is produced solid product.
Description of drawings
Fig. 1 is the utility model structural representation.
The specific embodiment
The utility model is described in further detail below in conjunction with accompanying drawing.
Referring to Fig. 1, the available flue gas that the utility model provides and hot-air are produced the spray-drying installation of solid product, the air inlet of fluidized bed furnace 2 is connected with the first air blast 1, the air outlet of fluidized bed furnace 2 is connected with the thermal source import of air heat exchanger 3, the thermal source outlet of air heat exchanger 3 connects deduster 4, deduster 4 is parallel with the first air door 16 by the outlet of the first air-introduced machine 5, the second air door 26 and the 3rd air door 36, the first air door 16 is connected with spray drying tower 10, the air outlet of spray drying tower 10 is connected with cyclone separator 11 in turn, the first wet scrubber 12, the second air-introduced machine 13 and chimney 15, the heat exchange import of air heat exchanger 3 is connected with the heat exchange of air preheater 9 outlet, the heat exchange import of air preheater 9 connects air cleaner 7 by the second air blast 8, the heat exchange outlet of air heat exchanger 3 connects spray drying tower 10 by the 4th air door 6, the second air door 26 is connected with the thermal source import of air preheater 9, the thermal source outlet of air preheater 9 is connected with the second wet scrubber 14, the second wet scrubber 14 is connected with chimney 15, and the 3rd air door 36 is connected with fluidized bed furnace 2.
Referring to Fig. 1, the course of work that available flue gas of the present utility model and hot-air are produced the spray-drying installation of solid product is:
Adopt fluidized bed furnace 2 to replace traditional chain bar oven heat supply heat supplies, the heat-supplying mode that the high-temperature flue gas that fluidized bed furnace 2 produces can be by heat exchange or not heat exchange is as the thermal source of spray drying system.
When producing high-quality powdery polyaluminium chloride, the high-temperature flue gas that fluidized bed furnace 2 produces need to be by heat exchange, by the hot-air that produces as thermal source for spray drying tower, at this moment, the first air door 16 need to be closed, the second air door 26, the 3rd air door 36 and the 4th air door 6 are opened, high-temperature flue gas is as thermal source and the normal temperature air heat exchange of air heat exchanger 3, send the second air blast 8 and air preheater 9 here filter through air cleaner 7 normal temperature air heating by air heat exchanger 3, obtain 250 ℃～280 ℃ clean hot blast, this hot blast is introduced spray drying tower 10 for the production of high-quality powdery polyaluminium chloride through the 4th air door 6, and the air outlet of spray drying tower 10 is through cyclone separator 11, the first wet scrubber 12, the second air-introduced machine 13 and chimney 15 carry out dedusting and discharging; Temperature is 350 ℃～500 ℃ flue gas behind the process air heat exchanger 3, carry out dedusting with deduster 4, the air that 50% flue gas imports in 26 pairs of air preheaters of the second air door 9 after the dedusting carries out preheating, then is connected with chimney 15 through the second wet scrubber 14, carries out desulfurization and dedusting discharging; Other 50% flue gas is sent into fluidized bed furnace 2 through the 3rd air door 36 and is recycled after the dedusting.
When producing middle-grade quality powdery polyaluminium chloride, the high-temperature flue gas that fluidized bed furnace 2 produces through directly enter after the dedusting spray drying tower as thermal source for spray drying tower, at this moment, hot air system is stopped using, the first air door 16 need to be opened, the second air door 26, the 3rd air door 36 and the 4th air door 6 need be closed, high-temperature flue gas is by behind the air heat exchanger 3, carry out dedusting with deduster 4, flue gas after the dedusting imports spray drying tower 10 as the drying source of middle-grade quality powdery polyaluminium chloride through the first air door 16, and the air outlet of spray drying tower 10 is through cyclone separator 11, the first wet scrubber 12, the second air-introduced machine 13 and chimney 15 carry out dedusting and discharging.
Referring to Fig. 1, fluidized bed furnace 2 replaces the heat supplies of traditional chain bar oven, can make coal-fired combustion utilization efficiency bring up to 98% from 85%-88%, and desulfurization degree is increased to 60% from 0%, and produces 800 ℃～1000 ℃ high-temperature flue gas; Be incubated preferably under the condition, total heat utilization efficiency of fluidized bed furnace 2 always can reach 93%; Save a coal-fired ton product and reach 60kg above (calculate with the 5000kcal/kg coal, lower with), and do not have sulphur and dust emission; Can make spray drying tower produce respectively middle-grade quality and high-quality powdery polyaluminium chloride product, product-mix is more reasonable, and energy consumption is lower, and the average fire coal ton product of saving reaches 70kg, and without the sulfurous gas discharging, production process is environmental protection more.
Claims (1)
1. an available flue gas and hot-air are produced the spray-drying installation of solid product, it is characterized in that: the air inlet of fluidized bed furnace (2) is connected with the first air blast (1), an air outlet of described fluidized bed furnace (2) is connected with the thermal source import of air heat exchanger (3), the thermal source outlet of described air heat exchanger (3) connects deduster (4), described deduster (4) is parallel with the first air door (16) by the outlet of the first air-introduced machine (5), the second air door (26) and the 3rd air door (36), described the first air door (16) is connected with spray drying tower (10), the air outlet of described spray drying tower (10) is connected with cyclone separator (11) in turn, the first wet scrubber (12), the second air-introduced machine (13) and chimney (15), the heat exchange import of described air heat exchanger (3) is connected with the heat exchange outlet of air preheater (9), the heat exchange import of described air preheater (9) connects air cleaner (7) by the second air blast (8), the heat exchange outlet of described air heat exchanger (3) connects described spray drying tower (10) by the 4th air door (6), described the second air door (26) is connected with the thermal source import of described air preheater (9), the thermal source outlet of described air preheater (9) is connected with the second wet scrubber (14), described the second wet scrubber (14) is connected with described chimney (15), and described the 3rd air door (36) is connected with described fluidized bed furnace (2).
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201320229109 CN203244796U (en) | 2013-04-28 | 2013-04-28 | Spray drying device for producing solid product by smoke and hot air |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201320229109 CN203244796U (en) | 2013-04-28 | 2013-04-28 | Spray drying device for producing solid product by smoke and hot air |
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| CN203244796U true CN203244796U (en) | 2013-10-23 |
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| CN 201320229109 Expired - Fee Related CN203244796U (en) | 2013-04-28 | 2013-04-28 | Spray drying device for producing solid product by smoke and hot air |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107213846A (en) * | 2017-07-07 | 2017-09-29 | 西安建筑科技大学 | A kind of granulation of net gas and smoke processing system and technique for ceramic industry |
-
2013
- 2013-04-28 CN CN 201320229109 patent/CN203244796U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107213846A (en) * | 2017-07-07 | 2017-09-29 | 西安建筑科技大学 | A kind of granulation of net gas and smoke processing system and technique for ceramic industry |
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| 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: 20131023 Termination date: 20150428 |
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| EXPY | Termination of patent right or utility model |