CN211078504U - Device for preparing ferrous sulfate monohydrate - Google Patents
Device for preparing ferrous sulfate monohydrate Download PDFInfo
- Publication number
- CN211078504U CN211078504U CN201921423283.5U CN201921423283U CN211078504U CN 211078504 U CN211078504 U CN 211078504U CN 201921423283 U CN201921423283 U CN 201921423283U CN 211078504 U CN211078504 U CN 211078504U
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- gas
- inlet
- heat exchanger
- desiccator
- paddle
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- Withdrawn - After Issue
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- XBDUTCVQJHJTQZ-UHFFFAOYSA-L iron(2+) sulfate monohydrate Chemical compound O.[Fe+2].[O-]S([O-])(=O)=O XBDUTCVQJHJTQZ-UHFFFAOYSA-L 0.000 title claims abstract description 20
- 239000000843 powder Substances 0.000 claims abstract description 20
- 238000001035 drying Methods 0.000 claims abstract description 17
- 239000000463 material Substances 0.000 claims abstract description 16
- 239000000428 dust Substances 0.000 claims description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 12
- 238000011084 recovery Methods 0.000 claims description 9
- 230000000149 penetrating effect Effects 0.000 claims description 6
- 238000003860 storage Methods 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 abstract description 10
- 229920006395 saturated elastomer Polymers 0.000 abstract description 4
- 239000007789 gas Substances 0.000 description 78
- SURQXAFEQWPFPV-UHFFFAOYSA-L iron(2+) sulfate heptahydrate Chemical compound O.O.O.O.O.O.O.[Fe+2].[O-]S([O-])(=O)=O SURQXAFEQWPFPV-UHFFFAOYSA-L 0.000 description 11
- 239000002245 particle Substances 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 4
- 239000011790 ferrous sulphate Substances 0.000 description 4
- 235000003891 ferrous sulphate Nutrition 0.000 description 4
- 229910000359 iron(II) sulfate Inorganic materials 0.000 description 4
- 239000013078 crystal Substances 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 3
- 244000144972 livestock Species 0.000 description 3
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 2
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 2
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 235000011941 Tilia x europaea Nutrition 0.000 description 2
- 239000012159 carrier gas Substances 0.000 description 2
- 229910001448 ferrous ion Inorganic materials 0.000 description 2
- QBKSWRVVCFFDOT-UHFFFAOYSA-N gossypol Chemical compound CC(C)C1=C(O)C(O)=C(C=O)C2=C(O)C(C=3C(O)=C4C(C=O)=C(O)C(O)=C(C4=CC=3C)C(C)C)=C(C)C=C21 QBKSWRVVCFFDOT-UHFFFAOYSA-N 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000004571 lime Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 239000004408 titanium dioxide Substances 0.000 description 2
- 208000035240 Disease Resistance Diseases 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- QHOPXUFELLHKAS-UHFFFAOYSA-N Thespesin Natural products CC(C)c1c(O)c(O)c2C(O)Oc3c(c(C)cc1c23)-c1c2OC(O)c3c(O)c(O)c(C(C)C)c(cc1C)c23 QHOPXUFELLHKAS-UHFFFAOYSA-N 0.000 description 1
- 241000209140 Triticum Species 0.000 description 1
- 235000021307 Triticum Nutrition 0.000 description 1
- 239000003674 animal food additive Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 229930002875 chlorophyll Natural products 0.000 description 1
- 235000019804 chlorophyll Nutrition 0.000 description 1
- ATNHDLDRLWWWCB-AENOIHSZSA-M chlorophyll a Chemical compound C1([C@@H](C(=O)OC)C(=O)C2=C3C)=C2N2C3=CC(C(CC)=C3C)=[N+]4C3=CC3=C(C=C)C(C)=C5N3[Mg-2]42[N+]2=C1[C@@H](CCC(=O)OC\C=C(/C)CCC[C@H](C)CCC[C@H](C)CCCC(C)C)[C@H](C)C2=C5 ATNHDLDRLWWWCB-AENOIHSZSA-M 0.000 description 1
- 235000012343 cottonseed oil Nutrition 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- -1 feeder 1 Chemical compound 0.000 description 1
- 239000003337 fertilizer Substances 0.000 description 1
- 229930000755 gossypol Natural products 0.000 description 1
- 229950005277 gossypol Drugs 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 235000010755 mineral Nutrition 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 231100000915 pathological change Toxicity 0.000 description 1
- 230000036285 pathological change Effects 0.000 description 1
- 239000000575 pesticide Substances 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 231100000167 toxic agent Toxicity 0.000 description 1
- 239000003440 toxic substance Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
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- Drying Of Solid Materials (AREA)
Abstract
The utility model discloses a system device of getting ferrous sulfate monohydrate, the micro powder desiccator is connected with feeder, and the classificator and the separator of micro powder desiccator are connected, and the separator is connected with the paddle desiccator, and the paddle desiccator communicates with the feed bin, and separator and paddle desiccator are connected with tail gas processing apparatus respectively, and micro powder desiccator and paddle desiccator communicate with heating device respectively. The utility model adopts a two-stage micro-powder drying mode, the residence time of the materials in the micro-powder dryer is shorter under the action of air flow, and the residence time in the paddle dryer is longer; most of tail gas of the two-stage drying is circulated back to the gas heat exchanger to be heated again and then is introduced into the dryer, part of high-temperature condensate discharged by the paddle dryer is used for preheating gas entering the heat exchanger, namely the high-temperature condensate is introduced into the front part of the gas heat exchanger, saturated steam is introduced into the rear part of the gas heat exchanger, and the generated high-temperature gas enters the micro-powder dryer and the paddle dryer to be recycled, so that the heat is comprehensively utilized.
Description
Technical Field
The utility model belongs to the technical field of the ferrous sulfate preparation, concretely relates to system ferrous sulfate monohydrate's device.
Background
Ferrous sulfate heptahydrate is the main solid waste produced by titanium dioxide in sulfuric acid method, and more than 3 tons of the waste can be produced by each 1 ton of titanium dioxide. At present, the byproduct ferrous sulfate heptahydrate reaches tens of millions of tons every year in China, most of the accumulated emission is not utilized, and the environmental pollution is caused. Ferrous sulfate monohydrate is usually prepared from ferrous sulfate heptahydrate, and is a feed grade mineral feed additive, which supplements iron required by growth of livestock, can promote growth and development of livestock and aquatic livestock, enhance disease resistance, and increase feed reward. The iron also has effect in removing toxic substance from gossypol contained in cottonseed cake in feed, and can be used for preparing pigment such as iron oxide red by using ferrous sulfate monohydrate. The granular product is a popular fertilizer in foreign countries, can effectively improve soil and remove moss and lichen, can also be used as a pesticide for preventing and treating pathological changes of wheat and fruit trees, and is a catalyst for making chlorophyll by plants. The existing drying process for preparing ferrous sulfate monohydrate by ferrous sulfate heptahydrate has the advantages of high drying temperature, high energy consumption, long time and high corresponding ferrous ion oxidation rate.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a device for preparing ferrous sulfate monohydrate to solve the problems.
In order to achieve the above object, the utility model discloses a technical scheme be:
the utility model provides a system gets device of ferrous sulfate monohydrate, includes feeder, drying device, heating device and tail gas processing apparatus, drying device includes miropowder desiccator, separator and paddle desiccator, and the feed inlet and the feeder of miropowder desiccator are connected, the classificator that the miropowder desiccator top set up, and the discharge end of classificator is connected with the feed inlet of separator, and the discharge end and the feed inlet of paddle desiccator of separator are connected, and the discharge gate and the feed bin intercommunication of paddle desiccator, the tail gas discharge port of separator and paddle desiccator are connected with tail gas processing apparatus respectively, and the air intake of miropowder desiccator and the steam inlet of paddle desiccator communicate with heating device respectively. The method is characterized in that a crusher in a micro powder dryer and introduced hot air are adopted to break up and crush the bulk ferrous sulfate heptahydrate material, the hot air is introduced from the lower part of the micro powder dryer, the crushed material can be in a fluidized state under the action of the hot air and rotationally rises along the wall of a drying chamber of the micro powder dryer, when the material reaches a classifier at the top of the micro powder dryer, classification is carried out, the material with the particle size meeting the requirement is brought to a separator by the hot air, the material with the particle size larger than the requirement is enabled to impact on the inner wall of a cylinder of the equipment and then returns to the bottom to be further crushed by a gyratory crusher due to the centrifugal action of the classifier, and then the material is conveyed to the classifier by hot air again until the particle size meets the requirement.
The heat supply device comprises a gas heat exchanger and a steam boiler, a high-temperature condensate inlet of the gas heat exchanger is connected with a high-temperature condensate discharge port of the paddle dryer, a high-temperature gas inlet of the gas heat exchanger is connected with the steam boiler, a gas inlet of the gas heat exchanger is provided with a gas inlet device, a tail gas treatment device is connected with the gas inlet device, a high-temperature gas outlet of the gas heat exchanger is respectively connected with a gas inlet of the micro powder dryer and a hot carrier gas inlet of the paddle dryer, and the steam boiler is further connected with a steam inlet at the end part and a steam inlet at the middle part. The high-temperature condensate discharged by the paddle dryer, the high-temperature steam of the steam boiler and the circulating tail gas discharged by the tail gas treatment device are respectively introduced into the air inlet device to heat the sucked air, the heated air is respectively introduced into the micro powder dryer and the paddle dryer, and the high-temperature condensate, the steam, the tail gas and the generated heating air are utilized to carry out thermal circulation, so that the heat exchange efficiency and the heat utilization rate are improved, and the energy consumption is reduced.
The tail gas treatment device comprises a dust remover and an induced draft fan connected with a tail gas discharge port of the dust remover, wherein an inlet end of the dust remover is connected with the tail gas discharge port of the separator and the tail gas discharge port of the paddle dryer respectively, a dedusting material discharge port of the dust remover is communicated with the storage bin, and the induced draft fan is connected with a tail gas recovery device and an air inlet device respectively.
And a condensed water discharge port of the gas heat exchanger and a condensed water discharge port of the paddle dryer are respectively connected with a condensed water recovery device.
The air inlet device comprises an air filter, and the air filter is communicated with the gas heat exchanger through a blower.
The high-temperature condensate inlet and the high-temperature gas inlet are both arranged on the side wall of the gas heat exchanger in a penetrating mode, the high-temperature condensate inlet is arranged on the front portion of the gas heat exchanger, and the high-temperature gas inlet is arranged at a position, close to the middle portion, of the gas heat exchanger. The air in the gas heat exchanger is preheated by the high-temperature condensate, and then is further heated by the high-temperature steam, so that the consumption of the high-temperature steam in the steam boiler is reduced, the energy consumption is reduced, and the heat generated by the paddle dryer is effectively utilized.
And the middle steam inlet is arranged on the side wall of the paddle dryer in a penetrating manner and is communicated with the hollow hot shaft, the blades and the jacket of the paddle dryer.
The utility model discloses compare in prior art's beneficial effect do:
(1) the drying time is short:
the utility model adopts the drying mode of the first-stage micro powder dryer and the second-stage paddle dryer, because of the action of air flow, the residence time of the materials in the micro powder dryer is generally several seconds or tens of seconds, and the residence time in the paddle dryer is about 30 minutes, compared with the drying time of 3 hours in the prior art, the total drying time is shortened a lot, but ferrous ions are hardly oxidized;
(2) the heat utilization rate is high:
the utility model discloses in the dry gaseous heat exchanger of most circulation return of tail gas of well two-stage was heated back rethread desiccator again, paddle desiccator exhaust part high temperature lime set is used for preheating the gas that gets into the heat exchanger, and the front portion of gas heat exchanger lets in the high temperature lime set promptly, and latter half lets in saturated steam, and the high temperature gas who produces gets into micro powder desiccator and paddle desiccator cyclic utilization again, makes the heat obtain comprehensive utilization.
Drawings
Fig. 1 is a schematic structural view of the present invention;
the reference numerals have the following meanings: 1. a feeding device; 2. a heating device; 3. a tail gas treatment device; 4. a micro powder dryer; 5. a separator; 6. a paddle dryer; 7. a classifier; 8. a storage bin; 9. a gas heat exchanger; 10. a steam boiler; 11. a high-temperature condensate inlet; 12. a high-temperature condensate discharge port; 13. a high temperature gas inlet; 14. an air intake device; 15. a high-temperature gas outlet; 16. a hot carrier gas inlet; 17. an end steam inlet; 18. a middle steam inlet; 19. a dust remover; 20. an induced draft fan; 21. a dust removal material discharge port; 22. a tail gas recovery device; 23. a condensed water discharge port; 24. a condensed water discharge port; 25. a condensate recovery device; 26. an air filter; 27. a blower.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and the following detailed description.
The feeding device in the utility model adopts a vibrating screen or a belt conveyor; the dust remover adopts a cyclone dust remover, a bag-type dust remover or an electric dust remover; the gas heat exchanger adopts a shell-and-tube heat exchanger, a finned heat exchanger or a plate heat exchanger.
As shown in fig. 1, a system gets device of ferrous sulfate monohydrate, including feeder 1, drying device, heating device 2 and tail gas processing apparatus 3, drying device includes miropowder desiccator 4, separator 5 and paddle dryer 6, the feed inlet and the feeder 1 of miropowder desiccator 4 are connected, 4 tops of miropowder desiccator set up classificator 7, the discharge end of classificator 7 is connected with the feed inlet of separator 5, the discharge end of separator 5 is connected with the feed inlet of paddle dryer 6, the discharge gate and the feed bin 8 intercommunication of paddle dryer 6, the tail gas discharge mouth of separator 5 and paddle dryer 6 is connected with tail gas processing apparatus 3 respectively, the air intake of miropowder desiccator 4 and the steam inlet of paddle dryer 6 communicate with heating device 2 respectively.
The heating device 2 comprises a gas heat exchanger 9 and a steam boiler 10, a high-temperature condensate inlet 11 of the gas heat exchanger 9 is connected with a high-temperature condensate discharge port 12 of the paddle dryer 6, a high-temperature gas inlet 13 of the gas heat exchanger 9 is connected with the steam boiler 10, a gas inlet 14 is arranged at a gas inlet of the gas heat exchanger 9, the tail gas treatment device 3 is connected with the gas inlet 14, a high-temperature gas outlet 15 of the gas heat exchanger 9 is respectively connected with a gas inlet of the micro powder dryer 4 and a hot gas inlet 16 of the paddle dryer 6, and the steam boiler 10 is further connected with a steam inlet 17 at the end part and a steam inlet 18 at the middle part of the paddle.
The tail gas treatment device 3 comprises a dust remover 19 and an induced draft fan 20 connected with a tail gas discharge port of the dust remover 19, an inlet end of the dust remover 19 is respectively connected with tail gas discharge ports of the separator 5 and the blade dryer 6, a dedusting material discharge port 21 of the dust remover 19 is communicated with a storage bin, and the induced draft fan 20 is respectively connected with a tail gas recovery device 22 and an air inlet device 14.
The condensate outlet 23 of the gas heat exchanger 9 and the condensate outlet 24 of the paddle dryer 6 are each connected to a condensate recovery device 25.
The air intake device 14 includes an air filter 26, and the air filter 26 communicates with the gas heat exchanger 9 through a blower 27.
The high-temperature condensate inlet 11 and the high-temperature gas inlet 13 are both arranged on the side wall of the gas heat exchanger 9 in a penetrating mode, the high-temperature condensate inlet 11 is arranged on the front portion of the gas heat exchanger 9, and the high-temperature gas inlet 13 is arranged at a position, close to the middle portion, of the gas heat exchanger 9.
The middle steam inlet 18 is arranged on the side wall of the paddle dryer 6 in a penetrating way and communicated with the hollow hot shaft, the blades and the jacket of the paddle dryer 6.
The preparation of ferrous sulfate monohydrate by using ferrous sulfate heptahydrate comprises the following steps:
(1) preparing heat supply gas:
introducing the high-temperature condensate of the paddle dryer into a gas heat exchanger to preheat the air introduced from an air filter, introducing saturated steam of a steam boiler into the gas heat exchanger, heating the air to 170-180 ℃, and introducing the air into a micro-powder dryer;
(2) preparing ferrous sulfate containing 2-3 crystal water:
feeding ferrous sulfate heptahydrate containing 3-5% of free water into a micro powder dryer to be scattered and crushed, drying the obtained material under the action of the heat supply gas obtained in the step (1), rotationally lifting the dried material to a classifier to be classified, and taking the material with the required particle size (the particle size is 40-80 meshes) out of a separator by dried tail gas at 90-110 ℃ to separate and collect the material to obtain ferrous sulfate containing 2-3 crystal water;
(3) preparing ferrous sulfate monohydrate:
feeding the ferrous sulfate containing 2-3 crystal water obtained in the step (2) into a paddle dryer, and introducing 150-200 ℃ saturated steam into a hollow hot shaft, blades and a jacket of the paddle dryer to obtain ferrous sulfate monohydrate;
(4) tail gas recovery:
and (3) discharging the tail gas separated by the separator in the step (2) and the tail gas generated after drying by the blade dryer in the step (3) into a dust collector for dust collection, and circulating a part of the tail gas with the temperature of 90-110 ℃ into an air heat exchanger for preparing the heating gas in the step (1).
Claims (7)
1. The utility model provides a prepare device of ferrous sulfate monohydrate which characterized in that: including feeder (1), drying device, heat supply unit (2) and tail gas processing apparatus (3), drying device includes miropowder desiccator (4), separator (5) and paddle desiccator (6), the feed inlet and feeder (1) of miropowder desiccator (4) are connected, miropowder desiccator (4) top sets up classificator (7), the discharge end and the feed inlet of separator (5) of classificator (7) are connected, the discharge end and the feed inlet of paddle desiccator (6) of separator (5) are connected, the discharge gate and feed bin (8) intercommunication of paddle desiccator (6), the tail gas discharge port of separator (5) and paddle desiccator (6) is connected with tail gas processing apparatus (3) respectively, the air intake of miropowder desiccator (4) and the steam inlet of paddle desiccator (6) communicate with heat supply unit (2) respectively.
2. The apparatus for producing ferrous sulfate monohydrate as set forth in claim 1, wherein: the heat supply device (2) comprises a gas heat exchanger (9) and a steam boiler (10), a high-temperature condensate inlet (11) of the gas heat exchanger (9) is connected with a high-temperature condensate discharge port (12) of the paddle dryer (6), a high-temperature gas inlet (13) of the gas heat exchanger (9) is connected with the steam boiler (10), a gas inlet of the gas heat exchanger (9) is provided with a gas inlet device (14), a tail gas treatment device (3) is connected with the gas inlet device (14), a high-temperature gas outlet (15) of the gas heat exchanger (9) is respectively connected with a gas inlet of the micro powder dryer (4) and a hot gas inlet (16) of the paddle dryer (6), and the steam boiler (10) is further connected with an end steam inlet (17) and a middle steam inlet (18) of the paddle dryer (6).
3. The apparatus for producing ferrous sulfate monohydrate as set forth in claim 2, wherein: the tail gas treatment device (3) comprises a dust remover (19) and an induced draft fan (20) connected with a tail gas discharge port of the dust remover (19), wherein an inlet end of the dust remover (19) is connected with tail gas discharge ports of a separator (5) and a blade dryer (6) respectively, a dedusting material discharge port (21) of the dust remover (19) is communicated with a storage bin, and the induced draft fan (20) is connected with a tail gas recovery device (22) and an air inlet device (14) respectively.
4. The apparatus for producing ferrous sulfate monohydrate as set forth in claim 3, wherein: and a condensed water discharge port (23) of the gas heat exchanger (9) and a condensed water discharge port (24) of the paddle dryer (6) are respectively connected with a condensed water recovery device (25).
5. The apparatus for producing ferrous sulfate monohydrate as set forth in claim 4, wherein: the air inlet device (14) comprises an air filter (26), and the air filter (26) is communicated with the gas heat exchanger (9) through a blower (27).
6. The apparatus for producing ferrous sulfate monohydrate as set forth in claim 5, wherein: the high-temperature condensate inlet (11) and the high-temperature gas inlet (13) are arranged on the side wall of the gas heat exchanger (9) in a penetrating mode, the high-temperature condensate inlet (11) is arranged in the front of the gas heat exchanger (9), and the high-temperature gas inlet (13) is arranged in the position, close to the middle, of the gas heat exchanger (9).
7. The apparatus for producing ferrous sulfate monohydrate as set forth in claim 6, wherein: the middle steam inlet (18) is arranged on the side wall of the paddle dryer (6) in a penetrating way and communicated with the hollow hot shaft, the blades and the jacket of the paddle dryer (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921423283.5U CN211078504U (en) | 2019-08-29 | 2019-08-29 | Device for preparing ferrous sulfate monohydrate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921423283.5U CN211078504U (en) | 2019-08-29 | 2019-08-29 | Device for preparing ferrous sulfate monohydrate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211078504U true CN211078504U (en) | 2020-07-24 |
Family
ID=71629991
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921423283.5U Withdrawn - After Issue CN211078504U (en) | 2019-08-29 | 2019-08-29 | Device for preparing ferrous sulfate monohydrate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211078504U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110467224A (en) * | 2019-08-29 | 2019-11-19 | 兰州天昊环保工程有限公司 | A kind of device and method that ferrous sulfate monohydrate is produced using ferrous sulfate heptahydrate |
| CN114383141A (en) * | 2021-12-20 | 2022-04-22 | 中盐昆山有限公司 | Sludge drying and recycling system |
| CN115040923A (en) * | 2022-06-13 | 2022-09-13 | 实联化工(江苏)有限公司 | A kind of hot air heavy alkali filtering device and method |
| CN115111897A (en) * | 2022-07-26 | 2022-09-27 | 滨州宏鑫生物科技有限公司 | Ferrous sulfate monohydrate production device and production process thereof |
-
2019
- 2019-08-29 CN CN201921423283.5U patent/CN211078504U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110467224A (en) * | 2019-08-29 | 2019-11-19 | 兰州天昊环保工程有限公司 | A kind of device and method that ferrous sulfate monohydrate is produced using ferrous sulfate heptahydrate |
| CN110467224B (en) * | 2019-08-29 | 2023-12-15 | 兰州天昊环保工程有限公司 | Device and method for preparing ferrous sulfate monohydrate by adopting ferrous sulfate heptahydrate |
| CN114383141A (en) * | 2021-12-20 | 2022-04-22 | 中盐昆山有限公司 | Sludge drying and recycling system |
| CN115040923A (en) * | 2022-06-13 | 2022-09-13 | 实联化工(江苏)有限公司 | A kind of hot air heavy alkali filtering device and method |
| CN115111897A (en) * | 2022-07-26 | 2022-09-27 | 滨州宏鑫生物科技有限公司 | Ferrous sulfate monohydrate production device and production process thereof |
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