CN104824380A - Waste diatomite processing system and waste diatomite processing technique - Google Patents
Waste diatomite processing system and waste diatomite processing technique Download PDFInfo
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- CN104824380A CN104824380A CN201510253755.7A CN201510253755A CN104824380A CN 104824380 A CN104824380 A CN 104824380A CN 201510253755 A CN201510253755 A CN 201510253755A CN 104824380 A CN104824380 A CN 104824380A
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- diatomite
- temporary storage
- waste
- waste diatomite
- storage tank
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- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 title claims abstract description 99
- 239000002699 waste material Substances 0.000 title claims abstract description 72
- 238000000034 method Methods 0.000 title claims abstract description 21
- 238000012545 processing Methods 0.000 title abstract description 13
- 238000003860 storage Methods 0.000 claims abstract description 51
- 238000001035 drying Methods 0.000 claims abstract description 26
- 238000004806 packaging method and process Methods 0.000 claims abstract description 19
- 239000000428 dust Substances 0.000 claims abstract description 18
- 239000007788 liquid Substances 0.000 claims abstract description 8
- 239000010865 sewage Substances 0.000 claims abstract description 6
- 230000018044 dehydration Effects 0.000 claims description 26
- 238000006297 dehydration reaction Methods 0.000 claims description 26
- 238000007599 discharging Methods 0.000 claims description 16
- 239000012065 filter cake Substances 0.000 claims description 16
- 239000000047 product Substances 0.000 claims description 15
- 239000000843 powder Substances 0.000 claims description 13
- 239000007787 solid Substances 0.000 claims description 11
- 238000011010 flushing procedure Methods 0.000 claims description 9
- 239000012528 membrane Substances 0.000 claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 238000011049 filling Methods 0.000 claims description 6
- 229920002401 polyacrylamide Polymers 0.000 claims description 6
- 238000005303 weighing Methods 0.000 claims description 6
- 238000001914 filtration Methods 0.000 claims description 4
- 238000012856 packing Methods 0.000 claims description 3
- 238000005406 washing Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 4
- 238000005265 energy consumption Methods 0.000 abstract 1
- 239000003337 fertilizer Substances 0.000 description 7
- 238000004064 recycling Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- 230000008901 benefit Effects 0.000 description 3
- 239000002131 composite material Substances 0.000 description 3
- 239000004035 construction material Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 239000010802 sludge Substances 0.000 description 3
- 241000272525 Anas platyrhynchos Species 0.000 description 2
- 241000287828 Gallus gallus Species 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 238000009835 boiling Methods 0.000 description 2
- 239000011449 brick Substances 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 238000005034 decoration Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 238000012946 outsourcing Methods 0.000 description 1
- 239000010908 plant waste Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
Landscapes
- Treatment Of Sludge (AREA)
Abstract
The invention discloses a waste diatomite processing system and a waste diatomite processing technique. The waste diatomite processing system comprises a diatomite temporary storage device and dewatering equipment, wherein a feeding pump is arranged on a pipeline system between the diatomite temporary storage device and the dewatering equipment, a discharge hole and a liquid outlet are formed on the dewatering equipment, the liquid outlet is connected with a sewage pipe network, the discharge hole of the dewatering equipment is connected with drying equipment by a belt conveyer, a wet gas outlet of the drying equipment is connected with a dust collection device, the discharge hole of the drying equipment is connected with packaging equipment by a screw conveyer, and the packaging equipment is provided with a finished product conveying device. The waste diatomite processing technique sequentially comprises the steps of conveying, storing temporarily, dewatering, drying, packaging and the like. According to the waste diatomite processing system and the waste diatomite processing technique, the investment is low, the energy consumption is low, the effect is rapid, the pollution problem of waste diatomite is solved and waste reutilization can be realized.
Description
Technical field
The present invention relates to waste diatomite processing technology field, specifically a kind of waste diatomite treatment system and treatment process.
Background technology
Brewery can produce waste material in process of production, in all waste materials of brewery, only has the waste diatomite after filtration not reclaim, and be difficult to recycling again, in line meeting causes severe contamination to environment, enters sewage disposal easy blocking pipe again.
Brewery adopts the way of outsourcing to the process of waste diatomite mostly at present, and namely defrayment is to garbage disposal unit, and garbage disposal unit sends a car transported by the waste diatomite in factory and carry out landfill.The general in-plant waste diatomite of above-mentioned way is saved bit by bit some and just can be transported; because waste diatomite protein content is very high; be easy to during storage go bad, the waste diatomite that therefore usually can occur not transport goes bad smelly situation, causes very large pollution to environment.Because it not easily stores perishable, therefore its recycling is very difficult, and the processing method of landfill also result in the pollution of environment, how to process waste diatomite and can avoid contaminated environment, and realize its recycling is the problem that current relevant industries need to solve simultaneously.
Summary of the invention
Based on the problems referred to above, the object of the present invention is to provide a kind of waste diatomite treatment system and treatment process, this treatment system and treatment process can either solve the environmental pollution that waste diatomite causes, and can realize again the recycling of waste diatomite, turn waste into wealth.
The present invention solves the technical scheme that its technical problem takes: a kind of waste diatomite treatment system, comprise diatomite apparatus for temporary storage and dehydration equipment, be communicated with by pipe-line system between diatomite apparatus for temporary storage and dehydration equipment, the pipe-line system between diatomite apparatus for temporary storage and dehydration equipment is provided with feeding engine; Dehydration equipment is provided with discharging opening and liquid outlet, and liquid outlet is connected to sewage network.
A kind of selectable technical scheme is: described diatomite apparatus for temporary storage is mud pit, and mud pit bottom part is furnished with multiple air jet pipe, and described air jet pipe is all communicated to compressed air piping, and the outlet bottom mud pit connects described feeding engine.Arrange air jet pipe bottom mud pit, air jet pipe ejection compressed air, can play sludge proof effect.
Another kind of selectable technical scheme is: described diatomite apparatus for temporary storage is temporary storage tank, and the charging aperture of temporary storage tank connects diatomite filter, and the discharging opening of temporary storage tank connects feeding engine.
Block for avoiding the discharging opening bottom temporary storage tank, further technical scheme is: the bottom of described temporary storage tank is provided with the tapering of back taper, the outside in tapering is provided with anti-clogging flusher, described anti-clogging flusher comprises the flushing endless tube of annular, washing ring pipe ring is outside tapering and be connected by support with between temporary storage tank, rinses endless tube and is connected with feed pipe; Rinse on endless tube and be evenly distributed with flushing arm, rinse arm one end and be connected with flushing endless tube, the other end is connected with the tapering of temporary storage tank; The top of temporary storage tank inside is provided with rotating wash bowl.Rotating wash bowl can keep cleaning in tank.
For reducing the moisture content of waste diatomite further, be convenient to preservation and the recycling of waste diatomite, further technical scheme is: the discharging opening of described dehydration equipment connects drying plant by belt conveyor, the damp exit of drying plant connects dust arrester, the discharging opening of drying plant passes through conveying worm and connects packaging facilities, and packaging facilities is with finished conveying device.
For realizing optimum efficiency, further technical scheme is: described dehydration equipment is membrane pressure filter, and described feeding engine is screw pump.The structure of membrane pressure filter is comparatively simple, processing ease, and automatic control level is high, stable performance, easy maintenance, and filtered driving force is large, and gained filter cake moisture content is low, is applicable to the processed of waste diatomite.
For realizing optimum efficiency, further technical scheme is: described drying plant is Pipebundledrier, and described dust arrester is cyclone dust collectors, and described packaging facilities is weighing sack-filling machine, and described finished conveying device is belt feeder.
The technical scheme of technical solution problem of the present invention also comprises: a kind of waste diatomite treatment process, comprises the following steps:
1) carry, the compressed air of 0.2 ~ 0.5MPa is injected the closed shell of diatomite filter, waste diatomite mud is discharged in diatomite filtration body, is delivered to temporary storage tank; Pneumatic convey mode has advantage that is airtight, health, and owing to not using feeding engine, thus reduce rate of breakdown;
2) temporary, the waste diatomite mud that diatomite filter interval is discharged temporarily is stored in temporary storage tank, and contained by waste diatomite, the weight of solid accounts for 10% of gross weight herein;
3) dewater, remove the portion of water in waste diatomite mud by the mode of mechanical dehydration, waste diatomite mud is converted into filter cake, contained by filter cake, the weight of solid accounts for 50% ~ 75% of gross weight;
4) dry, dried by filter cake, adopt dust arrester dedusting in drying course by drying plant, form powder product, contained by powder product, the weight of solid accounts for 85% of gross weight;
5) pack, the powder product after oven dry delivers to packaging facilities by feed screw, by packaging facilities by powder product packing.
In order to reduce the moisture content of filter cake further, further technical scheme is: in described dehydration, in waste diatomite mud, add flocculant.
Consider from the aspect such as input cost and result of use, preferred technical scheme is: described flocculant is polyacrylamide, and the weight ratio of the polyacrylamide added and waste diatomite mud is 1:10000.
The invention has the beneficial effects as follows:
1, cost is low, power consumption is few.Dehydration equipment adopts membrane pressure filter, and the structure of membrane pressure filter is comparatively simple, processing ease, and automatic control level is high, stable performance, easy maintenance, and filtered driving force is large, and gained filter cake moisture content is low; Drying plant adopts Pipebundledrier, and in various drying equipment, the power consumption of Pipebundledrier is minimum, hear rate is low, and often evaporating 1kg water only needs 1.0 ~ 1.2kg steam, is 50% of boiling type drying machine, be 25% of fluid bed, structure is simple, stable performance, equipment is durable.
2, take into full account environmental requirement, in drying plant, access dust arrester, ensure that, not containing dust in the moisture of discharging, selection cyclone dust collectors, as dust arrester, reach the emptying index of tail gas completely.
3, transform diatomite apparatus for temporary storage, arrange air jet pipe bottom mud pit, air jet pipe ejection compressed air, can play sludge proof effect; Be provided with tapering bottom diatomite temporary storage tank, anti-clogging flusher be installed, and at abhiseca, rotating wash bowl is installed, have casting smooth and easy, do not block up, the characteristic such as not pollute.
4, achieve the recycling of waste diatomite, waste diatomite moisture content is after treatment low, can preserve for a long time, can be used as feed addictive, composite fertilizer material, construction material etc., achieves and turn waste into wealth.
Accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment of the present invention one;
Fig. 2 is the structural representation of the embodiment of the present invention two;
Fig. 3 is the structural representation of the embodiment of the present invention two temporary storage tank;
Fig. 4 is the A-A sectional view of Fig. 3;
Fig. 5 is the process chart of the embodiment of the present invention two.
In figure: 1 temporary storage tank, 2 taperings, 3 rinse endless tube, and 4 rinse arm, 5 supports, 6 feed pipes.
Detailed description of the invention
Below in conjunction with Figure of description and specific embodiment, the invention will be further described:
Embodiment one:
As shown in Figure 1, a kind of waste diatomite treatment system, comprises diatomite apparatus for temporary storage and dehydration equipment, is communicated with between diatomite apparatus for temporary storage and dehydration equipment by pipe-line system, and the pipe-line system between diatomite apparatus for temporary storage and dehydration equipment is provided with feeding engine; Dehydration equipment is provided with discharging opening and liquid outlet, and liquid outlet is connected to sewage network.
Described diatomite apparatus for temporary storage is mud pit, and mud pit bottom part is furnished with multiple air jet pipe, and described air jet pipe is all communicated to compressed air piping, and the outlet bottom mud pit connects feeding engine.Arrange air jet pipe bottom mud pit, air jet pipe ejection compressed air, can play sludge proof effect.
Described dehydration equipment is membrane pressure filter, and described feeding engine is screw pump.The structure of membrane pressure filter is comparatively simple, processing ease, and automatic control level is high, stable performance, easy maintenance, and filtered driving force is large, and gained filter cake moisture content is low, is applicable to the processed of waste diatomite.Feeding engine adopts common screw pump to meet the demands, and can select G30_1 screw pump, lift 60 meters, and flow is 5m
3/ h, outlet pressure is 0.6MPa.
The technological process of the present embodiment process waste diatomite is:
1) temporary, the waste diatomite mud that brewery produces temporarily is stored in mud pit, and by the air jet pipe ejection compressed air bottom mud pit in temporary process, prevent precipitation, contained by waste diatomite, the weight of solid accounts for 10% of gross weight herein;
2) dewater, waste diatomite mud is delivered to membrane pressure filter by feeding engine and carries out mechanical dehydration, polyacrylamide is added as flocculant in dehydration, the weight ratio of the polyacrylamide added and waste diatomite mud is 1:10000, flocculant can reduce the moisture in filter cake, contained by gained filter cake, the weight of solid can account for 75% of gross weight, and gained filtrate directly can enter sewerage through sewage network.
The filter cake that the present embodiment obtains, water content about 20%, substantially prolongs the holding time compared with former waste diatomite mud, can be used for the following aspects:
Feed addictive: be mainly used in the bird feeds such as chicken and duck;
Composite fertilizer material: major function is chesson, strengthens fertilizer efficiency, extends fertilizer usefulness;
Construction material: make the excellent raw material of haydite, make for modern architecture brick, more wide is be applicable to the ep-type materials such as finishing, decoration.
Whole system presses 0.3t/h (siccative) design, total installation of generating capacity 20kW, floor space about 50 ㎡.System adopts and automatically controls, and a people can complete all operations.
If need packaging, then can supporting device of full automatic packaging, often wrap 25kg ~ 50kg, be convenient to store and transport.
Embodiment two:
As shown in Figure 2, the difference of the present embodiment and embodiment one is: described diatomite apparatus for temporary storage is temporary storage tank 1, and the charging aperture of temporary storage tank 1 connects diatomite filter, and the discharging opening of temporary storage tank 1 connects feeding engine.
As Fig. 3, Fig. 4, the bottom of described temporary storage tank 1 is provided with the tapering 2 of back taper, for avoiding blocking, the outside in tapering 2 is provided with anti-clogging flusher, described anti-clogging flusher comprises the flushing endless tube 3 of annular, rinse endless tube 3 to be looped around outside tapering 2 and to be connected by support 5 with between temporary storage tank 1, rinse endless tube 3 and be connected with feed pipe 6; Rinse on endless tube 3 and be evenly distributed with flushing arm 4, rinse arm 4 one end and be connected with flushing endless tube 3, the other end is connected with the tapering 2 of temporary storage tank 1; The top of temporary storage tank 1 inside is provided with rotating wash bowl.Rotating wash bowl can keep clean in tank, increases the temporary storage tank after anti-clogging flusher and rotating wash bowl, have casting smooth and easy, do not block up, the characteristic such as not pollute.
For reducing the moisture content of product further, the discharging opening of described dehydration equipment connects drying plant by belt conveyor; In order to ensure that the damp exit of drying plant connects dust arrester not containing dust in the moisture of discharging; The discharging opening of drying plant connects packaging facilities by conveying worm, and packaging facilities is with finished conveying device.
Described drying plant is Pipebundledrier, and in various drying equipment, the power consumption of Pipebundledrier is minimum, hear rate is low, and often evaporating 1kg water only needs 1.0 ~ 1.2kg steam, is 50% of boiling type drying machine, be 25% of fluid bed, structure is simple, stable performance, equipment is durable.
Described dust arrester is cyclone dust collectors, makes the discharge of moisture reach the emptying index of tail gas completely, meets environmental requirement.
Described packaging facilities is weighing sack-filling machine, can select auto-manual system weighing sack-filling machine, according to the weight of setting, packed by human assistance, sack closer is closely connected with it, adopts Nylon Bag packaging, ability 1 ~ 3 bag/minute, every bag of weight 10 ~ 50kg, described finished conveying device is belt feeder.
As Fig. 5, the technological process of the present embodiment process waste diatomite is:
1) carry, the compressed air of 0.2 ~ 0.5MPa is injected the closed shell of diatomite filter, waste diatomite mud is discharged in diatomite filtration body, is delivered to temporary storage tank; Pneumatic convey mode has advantage that is airtight, health, and owing to not using feeding engine, thus reduce rate of breakdown;
2) temporary, the waste diatomite mud that diatomite filter interval is discharged temporarily is stored in temporary storage tank, and contained by waste diatomite, the weight of solid accounts for 10% of gross weight herein;
3) dewater, remove the portion of water in waste diatomite mud by the mode of membrane pressure filter mechanical dehydration, waste diatomite mud is converted into filter cake, contained by filter cake, the weight of solid accounts for 50% of gross weight;
4) dry, dried by filter cake by Pipebundledrier, form powder product, the weight of solid accounts for 85% of gross weight contained by the powder product that Pipebundledrier discharging opening is discharged, and moisture is discharged after cyclone dust collectors dedusting;
5) pack, the powder product after oven dry delivers to weighing sack-filling machine top hopper, by weighing sack-filling machine by powder product packing by feed screw.
The powder product that the present embodiment obtains, water content about 15 ~ 20%, can preserve for a long time, can be used for the following aspects:
Feed addictive: be mainly used in the bird feeds such as chicken and duck;
Composite fertilizer material: major function is chesson, strengthens fertilizer efficiency, extends fertilizer usefulness;
Construction material: make the excellent raw material of haydite, make for modern architecture brick, more wide is be applicable to the ep-type materials such as finishing, decoration.
Whole system presses 0.3t/h (siccative) design, and total installation of generating capacity 45kW, floor space about 100 ㎡, the steam consumption processing one ton of finished product (siccative) is 0.6 ~ 1.0 ton.
System adopts automatically or semiautomatic control, only needs two people to complete all operations.
The present invention realizes effective utilization of waste diatomite, solving on the basis of a pollution problem for modern brewery, simultaneously for enterprise creates benefit.More valuable, along with effective utilization of this last pollutant, show the managerial skills of enterprise, make brewery really become the factory of environmental protection, clean factory, modern factory.
The above, just explain through diagrams principles more of the present invention, this description be not the present invention to be confined to shown in described concrete structure and the scope of application, therefore every corresponding modify of being likely utilized and equivalent, all belong to the scope of the claims that the present invention applies for.
Except technical characteristic described in description, all the other technical characteristics all belong to those skilled in the art's known technology.
Claims (10)
1. a waste diatomite treatment system, is characterized in that, comprises diatomite apparatus for temporary storage and dehydration equipment, is communicated with between diatomite apparatus for temporary storage and dehydration equipment by pipe-line system, and the pipe-line system between diatomite apparatus for temporary storage and dehydration equipment is provided with feeding engine; Dehydration equipment is provided with discharging opening and liquid outlet, and liquid outlet is connected to sewage network.
2. a kind of waste diatomite treatment system according to claim 1, it is characterized in that, described diatomite apparatus for temporary storage is mud pit, and mud pit bottom part is furnished with multiple air jet pipe, described air jet pipe is all communicated to compressed air piping, and the outlet bottom mud pit connects described feeding engine.
3. a kind of waste diatomite treatment system according to claim 1, is characterized in that, described diatomite apparatus for temporary storage is temporary storage tank, and the charging aperture of temporary storage tank connects diatomite filter, and the discharging opening of temporary storage tank connects feeding engine.
4. a kind of waste diatomite treatment system according to claim 3, it is characterized in that, the bottom of described temporary storage tank is provided with the tapering of back taper, the outside in tapering is provided with anti-clogging flusher, described anti-clogging flusher comprises the flushing endless tube of annular, washing ring pipe ring is outside tapering and be connected by support with between temporary storage tank, rinses endless tube and is connected with feed pipe; Rinse on endless tube and be evenly distributed with flushing arm, rinse arm one end and be connected with flushing endless tube, the other end is connected with the tapering of temporary storage tank; The top of temporary storage tank inside is provided with rotating wash bowl.
5. a kind of waste diatomite treatment system according to claim 4, it is characterized in that, the discharging opening of described dehydration equipment connects drying plant by belt conveyor, the damp exit of drying plant connects dust arrester, the discharging opening of drying plant connects packaging facilities by conveying worm, and packaging facilities is with finished conveying device.
6. a kind of waste diatomite treatment system according to claim 2 or 5, it is characterized in that, described dehydration equipment is membrane pressure filter, described feeding engine is screw pump.
7. a kind of waste diatomite treatment system according to claim 5, is characterized in that, described drying plant is Pipebundledrier, and described dust arrester is cyclone dust collectors, and described packaging facilities is weighing sack-filling machine, and described finished conveying device is belt feeder.
8., based on the waste diatomite treatment process of system described in claim 5, it is characterized in that, comprise the following steps:
1) carry, the compressed air of 0.2 ~ 0.5MPa is injected the closed shell of diatomite filter, waste diatomite mud is discharged in diatomite filtration body, is delivered to temporary storage tank;
2) temporary, the waste diatomite mud that diatomite filter interval is discharged temporarily is stored in temporary storage tank, and contained by waste diatomite, the weight of solid accounts for 10% of gross weight herein;
3) dewater, remove the portion of water in waste diatomite mud by the mode of mechanical dehydration, waste diatomite mud is converted into filter cake, contained by filter cake, the weight of solid accounts for 50% ~ 75% of gross weight;
4) dry, dried by filter cake, adopt dust arrester dedusting in drying course by drying plant, form powder product, contained by powder product, the weight of solid accounts for 85% of gross weight;
5) pack, the powder product after oven dry delivers to packaging facilities by feed screw, by packaging facilities by powder product packing.
9. waste diatomite treatment process according to claim 8, is characterized in that, in described dehydration, in waste diatomite mud, adds flocculant.
10. waste diatomite treatment process according to claim 9, is characterized in that, described flocculant is polyacrylamide, and the weight ratio of the polyacrylamide added and waste diatomite mud is 1:10000.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510253755.7A CN104824380A (en) | 2015-05-19 | 2015-05-19 | Waste diatomite processing system and waste diatomite processing technique |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510253755.7A CN104824380A (en) | 2015-05-19 | 2015-05-19 | Waste diatomite processing system and waste diatomite processing technique |
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| CN104824380A true CN104824380A (en) | 2015-08-12 |
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| CN201510253755.7A Pending CN104824380A (en) | 2015-05-19 | 2015-05-19 | Waste diatomite processing system and waste diatomite processing technique |
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Cited By (5)
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| CN105413301A (en) * | 2015-12-04 | 2016-03-23 | 刘建华 | New method for removing diatomite |
| CN105642657A (en) * | 2016-03-18 | 2016-06-08 | 东莞东元环境科技有限公司 | Film residue reduction integrated treatment system and film residue reduction treatment method |
| CN105688468A (en) * | 2016-02-02 | 2016-06-22 | 耿春茂 | Drying diaphragm plate-frame pressure filtration system |
| CN109847634A (en) * | 2019-02-28 | 2019-06-07 | 天地壹号饮料股份有限公司 | A kind of diatomite recycling can |
| CN110845513A (en) * | 2019-12-02 | 2020-02-28 | 青岛科技大学 | Synthetic method of aliphatic pentacyclic dianhydride |
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| CN110845513A (en) * | 2019-12-02 | 2020-02-28 | 青岛科技大学 | Synthetic method of aliphatic pentacyclic dianhydride |
| CN110845513B (en) * | 2019-12-02 | 2021-04-27 | 青岛科技大学 | Synthetic method of aliphatic pentacyclic dianhydride |
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