CN211084678U - Energy recovery device based on calcium carbonate dehydration drying system - Google Patents
Energy recovery device based on calcium carbonate dehydration drying system Download PDFInfo
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- CN211084678U CN211084678U CN201921480745.7U CN201921480745U CN211084678U CN 211084678 U CN211084678 U CN 211084678U CN 201921480745 U CN201921480745 U CN 201921480745U CN 211084678 U CN211084678 U CN 211084678U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
The utility model discloses an energy recovery device based on a calcium carbonate dehydration drying system, which comprises a primary drying cylinder and a secondary flash evaporation cylinder; the primary drying cylinder and the secondary flash evaporation cylinder are connected through a screw feeder; the discharge port of the secondary flash drum is connected with a bag-type dust collector through a discharge pipeline; the primary drying cylinder and the secondary flash evaporation cylinder are respectively connected with an air outlet of the heating blower through heating pipelines; one side of the bag-type dust collector is connected with an induced draft fan, and an air outlet of the induced draft fan is connected with the primary drying cylinder through a circulating pipeline; the top of the primary drying cylinder is provided with a feed inlet and an exhaust outlet respectively; the exhaust port is connected with the gas-liquid separation mechanism through an exhaust pipeline; the utility model discloses an energy recuperation device based on calcium carbonate dehydration drying system retrieves energy and calcium carbonate powder to utilize the recovery waste heat to be used for preheating the calcium carbonate thick liquids, can improve energy utilization and rate, can also reduce the loss of calcium carbonate.
Description
Technical Field
The utility model relates to an energy recuperation device based on calcium carbonate dehydration drying system belongs to carbonators production facility technical field.
Background
In the process of industrially producing the heavy calcium carbonate, one link needs to dry the materials, a flash drying device is generally used as a device needed, and a flash drying machine is novel continuous drying equipment integrating drying, crushing and screening. The existing flash evaporation drying device has certain defects, so that insufficient material stirring often occurs, larger materials are led out without stirring, the led-out materials are unqualified, and the result of reworking is needed, so that the waste of manpower, material resources and resources is caused, the larger materials are relatively smaller, the qualified materials can be dried only by consuming more hot air heat energy, and a certain amount of energy is wasted; meanwhile, the dried high-temperature gas is directly discharged to the outside, which not only causes energy waste, but also pollutes the external environment. Therefore, in order to solve the above problems, it is necessary to design an energy recovery device based on a calcium carbonate dehydration drying system.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem, the utility model provides an energy recuperation device based on calcium carbonate dehydration drying system retrieves energy and calcium carbonate powder to utilize the recovery waste heat to be used for preheating the calcium carbonate thick liquids, can improve energy utilization, can also reduce the loss of calcium carbonate.
The utility model discloses an energy recovery device based on a calcium carbonate dehydration drying system, which comprises a primary drying cylinder and a secondary flash evaporation cylinder; the primary drying cylinder and the secondary flash evaporation cylinder are connected through a screw feeder; the discharge port of the secondary flash drum is connected with a bag-type dust collector through a discharge pipeline; the primary drying cylinder and the secondary flash evaporation cylinder are respectively connected with an air outlet of the heating blower through heating pipelines; one side of the bag-type dust collector is connected with an induced draft fan, an air outlet of the induced draft fan is connected with the primary drying cylinder through a circulating pipeline, and the induced draft fan sends the calcium carbonate fine powder with the waste heat into the primary drying cylinder through the circulating pipeline, so that the calcium carbonate fine powder with the waste heat can be adhered to and wrapped on the calcium carbonate wet material sent into the primary drying cylinder, the contact area between the calcium carbonate fine powder with the waste heat and the calcium carbonate wet material is increased, the waste heat utilization rate is improved, and the recovery of the calcium carbonate fine powder can also be increased; the top of the primary drying cylinder is provided with a feed inlet and an exhaust outlet respectively; the exhaust port is connected with the gas-liquid separation mechanism through an exhaust pipeline; the gas-liquid separation mechanism comprises a separation box, a spraying pipe group arranged at the top of the separation box and a sieve plate obliquely arranged in the middle of the separation box; the top of the side surface of the separation box is provided with an air inlet which is used for being connected with an exhaust pipeline; an air outlet pipe is arranged on one side, away from the air inlet, of the top of the separation box; a discharge hopper is arranged on the side surface of the separation box and positioned at the inclined lower end of the sieve plate; the bottom of the side surface of the separation box is provided with a circulating port; the circulating port is connected with the spraying pipe group through a circulating pipe; the spraying pipe group is also connected with a water inlet pipeline, gas discharged from the primary drying cylinder can be sprayed and washed by using the gas-liquid separation mechanism, and spray precipitates (containing calcium carbonate fine powder) can be recovered through the sieve plate, so that the calcium carbonate fine powder is prevented from being carried to the outside from the exhaust pipe along with the gas flow, the environmental quality is improved, and the loss of calcium carbonate can be reduced; specifically, open the inlet channel earlier for outside clear water can spray to the separator box from the shower nest, contacts with the air current that gets into the separator box, makes the calcium carbonate fine powder of smuggleing secretly in the air current can combine and deposit with the spray water fog, and wherein, in order to guarantee that the spray water can well contact with the air current, the shower head adopts atomizing nozzle.
Furthermore, the spraying pipe group consists of a spraying pipe and a spraying head connected with the spraying pipe; the spray header is fixedly arranged inside the separation box; and one end of the spray pipe, which is far away from the spray head, is connected with a water inlet pipeline.
Further, a pressure regulating valve is installed on the exhaust pipeline; a water inlet switch valve is arranged on the water inlet pipeline; and the circulating pump and the circulating switch valve are arranged on the circulating pipe.
As a preferred embodiment, a first heating valve is arranged on the heating pipeline connected with the primary drying cylinder; and a second heating valve is arranged on the heating pipeline connected with the secondary flash drum.
Further, the heating blower is disposed in a flue of the boiler.
Furthermore, two sides of the lower part of the primary drying cylinder are respectively provided with a circulating heating port which is used for being connected with a circulating pipeline.
Further, a primary stirring mechanism penetrates through the primary drying cylinder; the primary stirring mechanism comprises a primary stirring paddle and a primary stirring motor in transmission connection with the primary stirring paddle; the primary stirring motor is fixed at the top of the primary drying cylinder through a motor frame; the primary stirring paddle consists of a primary stirring shaft and a primary stirring paddle blade fixedly arranged on the periphery of the primary stirring shaft; the upper end of the first-stage stirring shaft penetrates through the first-stage drying cylinder, the end part of the first-stage stirring shaft is in transmission connection with a rotating shaft of the first-stage stirring motor, the first-stage stirring motor acts to drive the first-stage stirring paddle to rotate, and the wet calcium carbonate material entering the first-stage drying cylinder is stirred and crushed.
Furthermore, the inside of the primary stirring shaft is of a hollow structure, and the upper end of the primary stirring shaft is sleeved with a heating shaft sleeve; the one-level (mixing) shaft passes through the heating axle sleeve and is connected with the heating pipeline, adopt hollow structure's one-level (mixing) shaft, and be connected with the heating pipeline through the heating axle sleeve, make the hot gas flow that the heating air-blower drum sent can get into the one-level (mixing) shaft through heating pipeline and heating axle sleeve, the one-level (mixing) shaft drives the rotatory good contact that can wet with the calcium carbonate of one-level stirring paddle leaf simultaneously, and to the wet material of calcium carbonate add the thermal drying, adopt the dynamic heating drying mode, make the wet material of calcium carbonate can the even heating, preheat, drying effect.
As a preferred embodiment, the outer side of the lower part of the secondary flash drum is annularly provided with a plurality of heating air inlets; each heating air inlet is connected with the heating pipeline through a heating branch pipe, and a plurality of heating air inlets are arranged, so that calcium carbonate powder in the secondary flash evaporation cylinder can be heated uniformly, and the drying effect is improved.
Further, a secondary stirring mechanism penetrates through the secondary flash drum; the second-stage stirring mechanism comprises a second-stage stirring paddle and a second-stage stirring motor in transmission connection with the second-stage stirring paddle; the secondary stirring motor is fixed at the bottom of the secondary flash drum through a motor base; the second-stage stirring paddle consists of a second-stage stirring shaft and a second-stage stirring paddle blade fixedly arranged on the periphery of the second-stage stirring shaft; and the lower end of the second-stage stirring shaft penetrates through the second-stage flash evaporation cylinder, the end part of the second-stage stirring shaft is in transmission connection with a rotating shaft of a second-stage stirring motor, and the second-stage stirring motor acts to drive a second-stage stirring paddle to rotate so as to centrifugally crush the calcium carbonate fine powder entering the second-stage flash evaporation cylinder.
Compared with the prior art, the energy recovery device based on the calcium carbonate dehydration drying system can fully crush calcium carbonate powder, improve the drying effect of the calcium carbonate powder and ensure that the calcium carbonate powder can be fully dried through stirring and crushing of the primary stirring mechanism in the primary drying cylinder, extrusion of the feeding screw in the screw feeder and centrifugal crushing of the secondary stirring mechanism in the secondary flash evaporation cylinder; the calcium carbonate fine powder with the waste heat is sent into the primary drying cylinder through the circulating pipeline by the induced draft fan, so that the calcium carbonate fine powder with the waste heat can be adhered to and wrapped on the calcium carbonate wet material sent into the primary drying cylinder, the contact area between the calcium carbonate fine powder with the waste heat and the calcium carbonate wet material is increased, the waste heat utilization rate is improved, and the recovery of the calcium carbonate fine powder can also be increased; the gas discharged from the primary drying cylinder is sprayed and washed, and the sprayed precipitate can be recovered through a sieve plate, so that the calcium carbonate fine powder is prevented from being carried to the outside along with the airflow from an exhaust pipe, the environmental quality is improved, and the loss of calcium carbonate can be reduced; the energy and the calcium carbonate powder are recycled, and the recycled waste heat is used for preheating the calcium carbonate slurry, so that the energy utilization rate can be improved, and the loss of calcium carbonate can be reduced.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a schematic structural view of the gas-liquid separation mechanism of the present invention.
The parts in the drawings are marked as follows: 1-a primary drying cylinder, 2-a secondary flash evaporation cylinder, 3-a screw feeder, 4-a discharge pipeline, 5-a bag dust collector, 6-a heating pipeline, 7-a heating blower, 8-an induced draft fan, 9-a circulation pipeline, 10-a feed inlet, 11-an exhaust outlet, 12-an exhaust pipeline, 13-a separation box, 14-a spray pipe group, 141-a spray pipe, 142-a spray header, 15-a sieve plate, 16-an air inlet, 17-an air outlet pipe, 18-a discharge hopper, 19-a circulation port, 20-a circulation pipe, 21-a water inlet pipeline, 22-a pressure regulating valve, 23-a water inlet switch valve, 24-a circulation pump, 25-a circulation switch valve, 26-a first heating valve and 27-a second heating valve, 28-boiler flue, 29-circulating heating port, 30-primary stirring mechanism, 301-primary stirring paddle, 3011-primary stirring shaft, 3012-primary stirring blade, 302-primary stirring motor, 31-motor frame, 32-heating shaft sleeve, 33-heating air inlet, 34-heating branch pipe, 35-secondary stirring mechanism, 351-secondary stirring paddle, 3511-secondary stirring shaft, 3512-secondary stirring blade, 352-secondary stirring motor and 36-motor base.
Detailed Description
The energy recovery device based on the calcium carbonate dehydration drying system as shown in fig. 1 and fig. 2 comprises a primary drying cylinder 1 and a secondary flash evaporation cylinder 2; the primary drying cylinder 1 and the secondary flash evaporation cylinder 2 are connected through a screw feeder 3; the discharge port of the secondary flash drum 2 is connected with a bag-type dust collector 5 through a discharge pipeline 4; the primary drying cylinder 1 and the secondary flash evaporation cylinder 2 are respectively connected with an air outlet of a heating blower 7 through a heating pipeline 6; one side of the bag-type dust collector 5 is connected with an induced draft fan 8, and an air outlet of the induced draft fan 8 is connected with the primary drying cylinder 1 through a circulating pipeline 9; the top of the primary drying cylinder 1 is respectively provided with a feed inlet 10 and an exhaust port 11; the exhaust port 11 is connected with a gas-liquid separation mechanism through an exhaust pipeline 12; the gas-liquid separation mechanism comprises a separation box 13, a spray pipe group 14 arranged at the top of the separation box 13 and a sieve plate 15 obliquely arranged in the middle of the separation box 13; the top of the side surface of the separation box 13 is provided with an air inlet 16 which is used for being connected with an exhaust pipeline 12; an air outlet pipe 17 is arranged on one side of the top of the separation box 13, which is far away from the air inlet 16; a discharge hopper 18 is arranged on the side surface of the separation box 13 and positioned at the inclined lower end of the sieve plate 15; the bottom of the side surface of the separation box 13 is provided with a circulating port 19; the circulation port 19 is connected with the spraying pipe group 14 through a circulation pipe 20; the shower group 14 is also connected with a water inlet pipeline 21.
The spraying pipe group 14 consists of a spraying pipe 141 and a spraying head 142 connected with the spraying pipe 141; the spray header 142 is fixedly arranged inside the separation box 13; the end of the shower pipe 141 facing away from the shower head 142 is connected to the water inlet pipe 21.
A pressure regulating valve 22 is arranged on the exhaust pipeline 12; a water inlet switch valve 23 is arranged on the water inlet pipeline 21; the circulation pipe 20 is provided with a circulation pump 24 and a circulation switching valve 25.
A first heating valve 26 is arranged on the heating pipeline 6 connected with the primary drying cylinder 1; and a second heating valve 27 is arranged on the heating pipeline 6 connected with the secondary flash drum 2.
The heating blower 7 is disposed in the boiler flue 28.
And two sides of the lower part of the primary drying cylinder 1 are respectively provided with a circulating heating port 29 which is used for being connected with a circulating pipeline 9.
A primary stirring mechanism 30 penetrates through the primary drying cylinder 1; the primary stirring mechanism 30 comprises a primary stirring paddle 301 and a primary stirring motor 302 in transmission connection with the primary stirring paddle 301; the primary stirring motor 302 is fixed on the top of the primary drying cylinder 1 through a motor frame 31; the primary stirring paddle 301 consists of a primary stirring shaft 3011 and a primary stirring paddle 3012 fixedly arranged on the periphery of the primary stirring shaft 3011; the upper end of the primary stirring shaft 3011 penetrates through the primary drying cylinder 1, and the end part of the primary stirring shaft 3011 is in transmission connection with a rotating shaft of the primary stirring motor 302.
The first-stage stirring shaft 3011 is hollow inside and is sleeved with a heating shaft sleeve 32 at the upper end; the first-stage stirring shaft 3011 is connected with the heating pipeline 6 through the heating shaft sleeve 32.
A plurality of heating air inlets 33 are annularly arranged on the outer side of the lower part of the secondary flash drum 2; each of the heating air inlets 33 is connected with the heating pipeline 6 through a heating branch pipe 34.
A secondary stirring mechanism 35 penetrates through the secondary flash drum 2; the second-stage stirring mechanism 35 comprises a second-stage stirring paddle 351 and a second-stage stirring motor 352 in transmission connection with the second-stage stirring paddle 351; the secondary stirring motor 352 is fixed at the bottom of the secondary flash drum 2 through a motor base 36; the secondary stirring paddle 351 comprises a secondary stirring shaft 3511 and a secondary stirring blade 3512 fixedly arranged on the periphery of the secondary stirring shaft 3511; the lower end of the second-stage stirring shaft 3511 penetrates through the second-stage flash drum 2, and the end part of the second-stage stirring shaft 3511 is in transmission connection with the rotating shaft of the second-stage stirring motor 352.
The energy recovery device based on the calcium carbonate dehydration drying system can fully crush calcium carbonate powder, improve the drying effect of the calcium carbonate powder and ensure that the calcium carbonate powder can be fully dried through stirring and crushing of the primary stirring mechanism in the primary drying cylinder, extrusion of the feeding screw in the screw feeder and centrifugal crushing of the secondary stirring mechanism in the secondary flash evaporation cylinder; the calcium carbonate fine powder with the waste heat is sent into the primary drying cylinder through the circulating pipeline by the induced draft fan, so that the calcium carbonate fine powder with the waste heat can be adhered to and wrapped on the calcium carbonate wet material sent into the primary drying cylinder, the contact area between the calcium carbonate fine powder with the waste heat and the calcium carbonate wet material is increased, the waste heat utilization rate is improved, and the recovery of the calcium carbonate fine powder can also be increased; the gas discharged from the primary drying cylinder is sprayed and washed, and the sprayed precipitate can be recovered through a sieve plate, so that the calcium carbonate fine powder is prevented from being carried to the outside along with the airflow from an exhaust pipe, the environmental quality is improved, and the loss of calcium carbonate can be reduced; the energy and the calcium carbonate powder are recovered, and the recovered waste heat is used for preheating the calcium carbonate slurry, so that the energy utilization rate can be improved, and the loss of calcium carbonate can be reduced; a plurality of heating air inlets are formed in the side face of the lower portion of the secondary flash drum, so that calcium carbonate powder in the secondary flash drum can be heated uniformly, and the drying effect is improved.
The above-mentioned embodiment is only the preferred embodiment of the present invention, so all the equivalent changes or modifications made by the structure, features and principles of the present invention are included in the claims of the present invention.
Claims (10)
1. An energy recovery device based on a calcium carbonate dehydration drying system comprises a primary drying cylinder and a secondary flash evaporation cylinder; the primary drying cylinder and the secondary flash evaporation cylinder are connected through a screw feeder; the discharge port of the secondary flash drum is connected with a bag-type dust collector through a discharge pipeline; the primary drying cylinder and the secondary flash evaporation cylinder are respectively connected with an air outlet of the heating blower through heating pipelines; the method is characterized in that: one side of the bag-type dust collector is connected with an induced draft fan, and an air outlet of the induced draft fan is connected with the primary drying cylinder through a circulating pipeline; the top of the primary drying cylinder is provided with a feed inlet and an exhaust outlet respectively; the exhaust port is connected with the gas-liquid separation mechanism through an exhaust pipeline; the gas-liquid separation mechanism comprises a separation box, a spraying pipe group arranged at the top of the separation box and a sieve plate obliquely arranged in the middle of the separation box; the top of the side surface of the separation box is provided with an air inlet which is used for being connected with an exhaust pipeline; an air outlet pipe is arranged on one side, away from the air inlet, of the top of the separation box; a discharge hopper is arranged on the side surface of the separation box and positioned at the inclined lower end of the sieve plate; the bottom of the side surface of the separation box is provided with a circulating port; the circulating port is connected with the spraying pipe group through a circulating pipe; the spraying pipe group is also connected with a water inlet pipeline.
2. The energy recovery device based on calcium carbonate dewatering and drying system of claim 1, characterized in that: the spraying pipe group consists of a spraying pipe and a spraying head connected with the spraying pipe; the spray header is fixedly arranged inside the separation box; and one end of the spray pipe, which is far away from the spray head, is connected with a water inlet pipeline.
3. The energy recovery device based on calcium carbonate dewatering and drying system of claim 1, characterized in that: a pressure regulating valve is arranged on the exhaust pipeline; a water inlet switch valve is arranged on the water inlet pipeline; and the circulating pump and the circulating switch valve are arranged on the circulating pipe.
4. The energy recovery device based on calcium carbonate dewatering and drying system of claim 1, characterized in that: a first heating valve is arranged on the heating pipeline connected with the primary drying cylinder; and a second heating valve is arranged on the heating pipeline connected with the secondary flash drum.
5. The energy recovery device based on calcium carbonate dewatering and drying system of claim 1, characterized in that: the heating blower is arranged in the boiler flue.
6. The energy recovery device based on calcium carbonate dewatering and drying system of claim 1, characterized in that: and two sides of the lower part of the primary drying cylinder are respectively provided with a circulating heating port for being connected with a circulating pipeline.
7. The energy recovery device based on calcium carbonate dewatering and drying system of claim 1, characterized in that: a primary stirring mechanism penetrates through the primary drying cylinder; the primary stirring mechanism comprises a primary stirring paddle and a primary stirring motor in transmission connection with the primary stirring paddle; the primary stirring motor is fixed at the top of the primary drying cylinder through a motor frame; the primary stirring paddle consists of a primary stirring shaft and a primary stirring paddle blade fixedly arranged on the periphery of the primary stirring shaft; the upper end of the first-stage stirring shaft penetrates through the first-stage drying cylinder, and the end part of the first-stage stirring shaft is in transmission connection with a rotating shaft of a first-stage stirring motor.
8. The energy recovery device based on calcium carbonate dewatering and drying system of claim 7, characterized in that: the inner part of the primary stirring shaft is of a hollow structure, and the upper end of the primary stirring shaft is sleeved with a heating shaft sleeve; the first-stage stirring shaft is connected with a heating pipeline through a heating shaft sleeve.
9. The energy recovery device based on calcium carbonate dewatering and drying system of claim 1, characterized in that: a plurality of heating air inlets are annularly arranged on the outer side of the lower part of the secondary flash drum; each heating air inlet is connected with a heating pipeline through a heating branch pipe.
10. The energy recovery device based on calcium carbonate dewatering and drying system of claim 1, characterized in that: a second-stage stirring mechanism penetrates through the second-stage flash evaporation cylinder; the second-stage stirring mechanism comprises a second-stage stirring paddle and a second-stage stirring motor in transmission connection with the second-stage stirring paddle; the secondary stirring motor is fixed at the bottom of the secondary flash drum through a motor base; the second-stage stirring paddle consists of a second-stage stirring shaft and a second-stage stirring paddle blade fixedly arranged on the periphery of the second-stage stirring shaft; the lower end of the second-stage stirring shaft penetrates through the second-stage flash evaporation cylinder, and the end part of the second-stage stirring shaft is in transmission connection with a rotating shaft of a second-stage stirring motor.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921480745.7U CN211084678U (en) | 2019-09-06 | 2019-09-06 | Energy recovery device based on calcium carbonate dehydration drying system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921480745.7U CN211084678U (en) | 2019-09-06 | 2019-09-06 | Energy recovery device based on calcium carbonate dehydration drying system |
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| CN211084678U true CN211084678U (en) | 2020-07-24 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112284044A (en) * | 2020-10-29 | 2021-01-29 | 李春群 | High-efficient circulating dehydration drying equipment of sweet potato strip |
| CN114933430A (en) * | 2021-11-26 | 2022-08-23 | 江西龙正科技发展有限公司 | Modified calcination technical treatment equipment for phosphogypsum solid waste |
-
2019
- 2019-09-06 CN CN201921480745.7U patent/CN211084678U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112284044A (en) * | 2020-10-29 | 2021-01-29 | 李春群 | High-efficient circulating dehydration drying equipment of sweet potato strip |
| CN114933430A (en) * | 2021-11-26 | 2022-08-23 | 江西龙正科技发展有限公司 | Modified calcination technical treatment equipment for phosphogypsum solid waste |
| CN114933430B (en) * | 2021-11-26 | 2023-04-25 | 江西龙正科技发展有限公司 | Phosphogypsum solid waste modified calcination technical treatment equipment |
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