CN203464609U - System drying sodium sulfite materials - Google Patents
System drying sodium sulfite materials Download PDFInfo
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- CN203464609U CN203464609U CN201320381605.0U CN201320381605U CN203464609U CN 203464609 U CN203464609 U CN 203464609U CN 201320381605 U CN201320381605 U CN 201320381605U CN 203464609 U CN203464609 U CN 203464609U
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Abstract
The utility model provides a system drying sodium sulfite materials, comprising a fluidized bed. The fluidized bed comprises a drying section and a cooling section, wherein a feed inlet is arranged at the front end of the drying section, a first heat exchanger is arranged in the drying section, a discharge outlet is arranged at the tail end of the cooling section, a second heat exchanger is arranged in the cooling section, hot air inlets are arranged at the bottom of the drying section, a cold air inlet is arranged at the bottom of the cooling section, a first fan and a third heat exchanger are sequentially connected with the hot air inlets by hot air pipes, the cold air inlet is connected with a second fan by a cold air pipe, and the other end of the third heat exchanger is connected with an air inlet pipe. The system is low in failure rate, high in drying efficiency, good in drying effect, uniform in material drying degree, easy for operation and reliable in system operation, prevents bed halting and shutdown, has no complicated operation.
Description
Technical field
The utility model belongs to chemical technology field, relates to a kind of sodium sulfite material drying system.
Background technology
What the former drying system of sodium sulfite production system adopted is vibrated fluidized bed, as shown in Figure 1, this vibrated fluidized bed consists of fluidized bed body 1 ', shock electric machine 2 ', blast pipe 3 ', air blast 4 ', heat exchanger 5 ' and cyclone dust collectors 6 ', fluidized bed body 1 ' carries out sustained vibration under shock electric machine 2 ' drives, under air blast 4 ' effect, air enters heat exchanger 5 ' heating through blast pipe 3 ', then enter in fluid bed material is dried, cyclone dust collectors 6 ' are for collecting the sodium sulfite dried particles that is suspended in fluidized bed body top.
By practical operation situation is observed and is added up, adopt vibra fluidized bed drying mainly to have the problem of the following aspects: 1. dead bed rate is high: because vibrated fluidized bed adopts shock electric machine and makes fluidization of material through Steam Heating or electrically heated air, to have the easy sideslip of material and cause dead bed and material to dry not dry phenomenon.And when steam pipe system pressure instability is qualitative, causes heating rear air and usually do not reach instructions for use, cause the dead bed of fluid bed, and after dry, material is moisture exceeds standard; 2. fault rate is high: shock electric machine is easy to exist the nonsynchronous phenomenon of amplitude, makes fluid bed inner support fatigue cause damaging, and elastic washer is also easy to aged deterioration.3. operating cost is high: due to former dry employing be pure pneumatic conveying drying, need to guarantee that atm number, hot properties could meet need of production, so the consumption of heat exchanger steam is high; 4. operating flexibility is little: vibrated fluidized bed is very high to entered material requirement, and one has desaturation material to enter a body will cause dead bed, and poor continuity, needs operating personnel to possess high operation level.
This makes being dried in order to restrict the bottleneck problem of sodium sulfite production technology of sodium sulfite product material.
Utility model content
The purpose of this utility model is the problem existing for prior art, and the sodium sulfite that a kind of rate of breakdown is little and drying efficiency is high material drying system is provided.
For this reason, the utility model adopts following technical scheme:
A kind of sodium sulfite material drying system, comprise fluid bed, described fluid bed comprises dryer section and cooling section, the front end of described dryer section is provided with in charging aperture, dryer section and is provided with First Heat Exchanger, the tail end of described cooling section is provided with and in discharging opening, cooling section, is provided with the second heat exchanger, described dryer section bottom is provided with hot-wind inlet, described cooling section bottom is provided with cold air inlet, described hot-wind inlet is connected with the first blower fan and the 3rd heat exchanger in turn by warm-air pipe, and described cold air inlet is connected with the second blower fan by cool air hose; Described the 3rd heat exchanger one end connects the first blower fan, the other end connects blast pipe.
Further, described First Heat Exchanger one end connects vapour source, the other end connects the first condensed water outlet pipe, and described second heat exchanger one end connects cooling water inlet pipe, the other end connects CWR; In described the 3rd heat exchanger, be provided with steam channel and hot-air channel, described steam channel one end connects vapour source, the other end connects the second condensed water outlet pipe, and described hot-air channel one end connects the first blower fan, the other end connects blast pipe.
Further, on described blast pipe, be also connected with sulfate system warm-air pipe.
Further, described charging aperture is provided with premix machine, and described premix machine top is provided with siccative entrance and wet feed entrance.
Further, described drying system also comprises cyclone dust collectors, the logical charge tube of charging aperture of described cyclone dust collectors is connected with the top of fluid bed, air outlet is connected bagroom, and the bottom of cyclone dust collectors is connected with the siccative entrance of premix machine by conveying worm.
The beneficial effects of the utility model are: rate of breakdown is little, are not easy the problem that occurs that dead bed is shut down; Drying efficiency is high and effective, and dry materials is even; Energy-saving and emission-reduction, the used heat wind that has effectively utilized sulfuric acid acid making system to discharge; Operation easier is low, and system is reliable, without complex operations.
Accompanying drawing explanation
Fig. 1 is the structural representation of original vibrated fluidized bed;
Fig. 2 is the structural representation of the utility model sodium sulfite material drying system;
Fig. 3 is the structural representation of the utility model sodium sulfite material drying system the 3rd heat exchanger.
In figure, 1 '-fluidized bed body, 2 '-shock electric machine, 3 '-blast pipe, 4 '-air blast, 5 '-heat exchanger, 6 '-cyclone dust collectors, 7 '-sodium sulfite material, 1-fluid bed, 101-dryer section, 102-cooling section, 2-charging aperture, 3-discharging opening, 4-First Heat Exchanger, 5-the second heat exchanger, 6-hot-wind inlet, 7-cold air inlet, 8-warm-air pipe, 9-the first blower fan, 10-the 3rd heat exchanger, 1001-the 3rd heat exchanger steam channel, 1002-the 3rd heat exchanger hot blast passage, 11-vapour source, 12-the first condensed water outlet pipe, 13-CWR, 14-cooling water inlet pipe, 15-the second condensed water outlet pipe, 16-blast pipe, 17 sulfate system warm-air pipes, 18-premix machine, 1801-siccative entrance, 1802-wet feed entrance, 19-cyclone dust collectors, 1901-cyclone dust collectors charging aperture, 1902-cyclone dust collectors air outlet, 20-expects pipe, 21-bagroom, 22-conveying worm, 23-cool air hose, 24-the second blower fan.
The specific embodiment
As shown in Figures 2 and 3, a kind of sodium sulfite material drying system, comprise fluid bed 1, fluid bed 1 comprises dryer section 101 and cooling section 102, the front end of dryer section 101 is provided with in charging aperture 2, dryer section 101 and is provided with First Heat Exchanger 4, the tail end of cooling section 102 is provided with and in discharging opening 3, cooling section 102, is provided with the second heat exchanger 5, dryer section 101 bottoms are provided with hot-wind inlet 6, cooling section 102 bottoms are provided with cold air inlet 7, hot-wind inlet 6 is connected with the first blower fan 9 and the 3rd heat exchanger 10 in turn by warm-air pipe 8, and cold air inlet 7 is connected with the second blower fan 24 by cool air hose 23; Charging aperture 2 is provided with premix machine 18, and premix machine 18 tops are provided with siccative entrance 1801 and wet feed entrance 1802; Described drying system also comprises cyclone dust collectors 19, the logical charge tube 20 of charging aperture 1901 of cyclone dust collectors 19 is connected with the top of fluid bed 1, air outlet 1902 is connected bagroom 21, and the bottom of cyclone dust collectors 19 is connected with the siccative entrance 1801 of premix machine 18 by conveying worm 22;
First Heat Exchanger 4 one end connect vapour source 11, the other end connects first condensed water outlet pipe 12, the second heat exchanger 5 one end and connects cooling water inlet pipe 14, other end connection CWR 13; In the 3rd heat exchanger 10, be provided with steam channel 1001 and hot-air channel 1002(steam channel in a tubular form), steam channel 1001 one end connect vapour source 11, the other end connects the second condensed water outlet pipe 15, and hot-air channel 1002 one end connect the first blower fan 9, the other end connects blast pipe 16; On blast pipe 16, be also connected with sulfate system warm-air pipe 17.
A sodium sulfite dry materials method of utilizing said system to carry out, comprises following processing step:
(1) the sodium sulfite powder that is 10-12% by water capacity is sent into the dryer section 101 of fluid bed 1 through premix machine 18 wet feed entrances 1802 and charging aperture 2, the air entering through blast pipe 16 and the hot blast from sulfuric acid acid making system that enters through sulfate system warm-air pipe 17 are in the interior mixing of blast pipe 16, then enter the hot-air channel of the 3rd heat exchanger 10, control makes to mix rear hot-air and be heated to 130-150 ℃ in the 3rd heat exchanger 10, then by the first blower fan 9, be blown into the dryer section 101 of fluid bed 1, to sodium sulfite material, be dried and make material to present fluidization; The sodium sulfite dried particles being suspended in fluid bed 1 is carried out to material collection by cyclone dust collectors 19 simultaneously, then this dried material is sent into premix machine 18 by conveying worm 22, wet feed is mixed with siccative premix machine 18 is interior, then send into fluid bed 1 and be dried.
(2) steam that vapour source 11 provides enters in First Heat Exchanger 4, and the sodium sulfite material in dryer section 101 is carried out to heat drying simultaneously, and the steam-condensation after heat release is water and discharges through the first condensate pipe 12;
(3) dried fluidisation state sodium sulfite material moves to cooling section 102 gradually, the cold air being blasted by the second blower fan 24 is lowered the temperature to material and is made material keep fluidization, the 5 pairs of materials of the second heat exchanger that are connected with circulating water carry out cooling down simultaneously, and cooled material is discharged through discharging opening 3.
Further, in described step (1),
A) when the hot blast temperature from sulfuric acid acid making system is 130-150 ℃, close blast pipe 16 and the 3rd heat exchanger 10, hot blast from sulfuric acid acid making system when cutting out, is only used as hot-air channel 1002 by the 3rd heat exchanger 10(the 3rd heat exchanger 10, lower same) and the first blower fan 9 is directly sent into, and fluid bed 1 is interior to be dried material;
B) when the hot blast temperature from sulfuric acid acid making system is during higher than 150 ℃, open blast pipe 16, close the 3rd heat exchanger 10, control makes to be mixed into 130-150 ℃ from the hot blast of sulfuric acid acid making system and the air entering through blast pipe 16, then sends into that fluid bed 1 is interior to be dried material;
C) when the hot blast temperature from sulfuric acid acid making system is during lower than 130 ℃, close blast pipe 16, open the 3rd heat exchanger 10, make in the 3rd heat exchanger 10, to be heated to 130-150 ℃ from the hot blast of sulfuric acid acid making system, then send into that fluid bed 1 is interior to be dried material;
D) when sulfuric acid acid making system produces without hot blast, to open blast pipe 16, start the 3rd heat exchanger 10, the air entering through blast pipe 16 is heated to 130-150 ℃ in the 3rd heat exchanger 10, then sends into that fluid bed 1 is interior to be dried material.
Select the hot blast of 130-150 ℃ to heat, because anhydrous sodium sulfite drying effect when temperature is 130-150 ℃ is best, when temperature is during lower than 130 ℃, can not remove the Free water of sodium sulfite completely at short notice, also have a small amount of crystallization water to remove simultaneously, do not reach the requirement of dry packing; When temperature is during higher than 150 ℃, sodium sulfite can be decomposed into vulcanized sodium and sodium sulphate, has reduced the purity of product.
Claims (5)
1. a sodium sulfite material drying system, it is characterized in that, comprise fluid bed, described fluid bed comprises dryer section and cooling section, the front end of described dryer section is provided with in charging aperture, dryer section and is provided with First Heat Exchanger, the tail end of described cooling section is provided with and in discharging opening, cooling section, is provided with the second heat exchanger, described dryer section bottom is provided with hot-wind inlet, described cooling section bottom is provided with cold air inlet, described hot-wind inlet is connected with the first blower fan and the 3rd heat exchanger in turn by warm-air pipe, and described cold air inlet is connected with the second blower fan by cool air hose; Described the 3rd heat exchanger other end connects blast pipe.
2. a kind of sodium sulfite material drying system according to claim 1, it is characterized in that, described First Heat Exchanger one end connects vapour source, the other end connects the first condensed water outlet pipe, and described second heat exchanger one end connects cooling water inlet pipe, the other end connects CWR; In described the 3rd heat exchanger, be provided with steam channel and hot-air channel, described steam channel one end connects vapour source, the other end connects the second condensed water outlet pipe, and described hot-air channel one end connects the first blower fan, the other end connects blast pipe.
3. a kind of sodium sulfite material drying system according to claim 1, is characterized in that, is also connected with sulfate system warm-air pipe on described blast pipe.
4. a kind of sodium sulfite material drying system according to claim 1, is characterized in that, described charging aperture is provided with premix machine, and described premix machine top is provided with siccative entrance and wet feed entrance.
5. a kind of sodium sulfite material drying system according to claim 4, it is characterized in that, also comprise cyclone dust collectors, the logical charge tube of charging aperture of described cyclone dust collectors is connected with the top of fluid bed, air outlet is connected bagroom, and the bottom of cyclone dust collectors is connected with the siccative entrance of premix machine by conveying worm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320381605.0U CN203464609U (en) | 2013-06-30 | 2013-06-30 | System drying sodium sulfite materials |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320381605.0U CN203464609U (en) | 2013-06-30 | 2013-06-30 | System drying sodium sulfite materials |
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| CN203464609U true CN203464609U (en) | 2014-03-05 |
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| CN201320381605.0U Expired - Fee Related CN203464609U (en) | 2013-06-30 | 2013-06-30 | System drying sodium sulfite materials |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103322773A (en) * | 2013-06-30 | 2013-09-25 | 金川集团股份有限公司 | System and method for drying sodium sulfite materials |
| CN106152706A (en) * | 2015-03-12 | 2016-11-23 | 张世华 | A kind of straight-line oscillation fluid bed drying oxalic acid crystal and waste gas treatment process and method |
| CN109028768A (en) * | 2018-08-08 | 2018-12-18 | 济南岳丰能源科技有限公司 | A kind of drying system and technique of chlorinated polyvinyl chloride resin |
| CN111981771A (en) * | 2019-05-21 | 2020-11-24 | 江苏苏盐井神股份有限公司 | Novel flaky calcium chloride dihydrate drying and cooling device and method |
-
2013
- 2013-06-30 CN CN201320381605.0U patent/CN203464609U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103322773A (en) * | 2013-06-30 | 2013-09-25 | 金川集团股份有限公司 | System and method for drying sodium sulfite materials |
| CN103322773B (en) * | 2013-06-30 | 2015-06-17 | 金川集团股份有限公司 | System and method for drying sodium sulfite materials |
| CN106152706A (en) * | 2015-03-12 | 2016-11-23 | 张世华 | A kind of straight-line oscillation fluid bed drying oxalic acid crystal and waste gas treatment process and method |
| CN109028768A (en) * | 2018-08-08 | 2018-12-18 | 济南岳丰能源科技有限公司 | A kind of drying system and technique of chlorinated polyvinyl chloride resin |
| CN111981771A (en) * | 2019-05-21 | 2020-11-24 | 江苏苏盐井神股份有限公司 | Novel flaky calcium chloride dihydrate drying and cooling device and method |
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Granted publication date: 20140305 Termination date: 20190630 |