CN115872163A - Dry air circulation pneumatic conveying system of ammonium chloride powder - Google Patents
Dry air circulation pneumatic conveying system of ammonium chloride powder Download PDFInfo
- Publication number
- CN115872163A CN115872163A CN202310171346.7A CN202310171346A CN115872163A CN 115872163 A CN115872163 A CN 115872163A CN 202310171346 A CN202310171346 A CN 202310171346A CN 115872163 A CN115872163 A CN 115872163A
- Authority
- CN
- China
- Prior art keywords
- ammonium chloride
- chloride powder
- rotary feeder
- dry
- dry air
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 title claims abstract description 96
- 235000019270 ammonium chloride Nutrition 0.000 title claims abstract description 48
- 239000000843 powder Substances 0.000 title claims abstract description 38
- 239000000463 material Substances 0.000 claims abstract description 16
- 238000001035 drying Methods 0.000 claims abstract description 9
- 238000001514 detection method Methods 0.000 claims description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- 238000001914 filtration Methods 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 2
- 230000000903 blocking effect Effects 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 4
- 239000007789 gas Substances 0.000 description 27
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 239000013078 crystal Substances 0.000 description 3
- 230000003068 static effect Effects 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000003337 fertilizer Substances 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000012267 brine Substances 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012840 feeding operation Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
Images
Classifications
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
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- Drying Of Solid Materials (AREA)
Abstract
The invention relates to an ammonium chloride powder drying air circulation pneumatic conveying system, which comprises: a rotary feeder for providing a supply of ammonium chloride powder; a discharge port of the rotary feeder is connected with a Roots blower and used for ventilating ammonium chloride powder; the rotary feeder is connected to a material-gas separator through a conveying pipeline, and the material-gas separator is connected with a discharger. For closed system, solved the contact of ammonium chloride with external moisture in transportation process through circulation pneumatic conveyor system, and roots's blower produces the air-out and has certain temperature, has increased the mobility of ammonium chloride powder material to the reduction leads to the possibility of ammonium chloride caking because of ambient temperature, humidity.
Description
Technical Field
The invention relates to the technical field of material conveying, in particular to an ammonium chloride powder drying air circulation pneumatic conveying system.
Background
In the prior art, ammonium chloride is called ammonium chloride for short, also called brine sand, and is a quick-acting nitrogen chemical fertilizer which is colorless crystals or white granular powder, has the nitrogen content of 24 to 25 percent and belongs to physiological acid fertilizer. Ammonium chloride has the following characteristics: 1. strong ammonium taste and toxicity; 2. the corrosivity is strong; 3. has adhesion property; 4. the fluidity was poor.
Due to the characteristics, the traditional mode of conveying ammonium chloride can cause the problems of poor environment of a conveying site, strong ammonia smell and serious pollution, and simultaneously, because ammonium chloride is easy to absorb moisture, the method is easy to cause great inconvenience in transportation, storage and use, and the caking of the ammonium chloride is complicated, because the ammonium chloride has certain moisture, crystal water in the ammonium chloride can be easily caused to generate crystal bridges under the change of factors such as external temperature, pressure, time and the like, so that the caking phenomenon can be caused. In view of the above technical problems, a closed system is required to isolate the ammonium chloride from the outside moisture during the transportation process, and therefore a dry air circulation pneumatic transportation system for ammonium chloride powder is needed.
Disclosure of Invention
In order to solve the problem of difficult conveying of ammonium chloride powder due to caking, the invention provides an ammonium chloride powder drying air circulation pneumatic conveying system.
The invention provides an ammonium chloride powder drying air circulation pneumatic conveying system, which adopts the following technical scheme:
an ammonium chloride powder drying air circulation pneumatic conveying system comprises:
a rotary feeder for providing a supply of ammonium chloride powder;
a discharge port of the rotary feeder is connected with a Roots blower and used for ventilating ammonium chloride powder;
the rotary feeder is connected to a material-gas separator through a conveying pipeline, and the material-gas separator is connected with a discharger.
Furthermore, the rotary feeder is also connected with a dry material temporary storage device for temporarily storing dry ammonium chloride powder.
Furthermore, be provided with the ripple compensator between rotatory feeder and the dry material temporary storage device for the deformation that causes because the difference in temperature between rotatory feeder and the dry material temporary storage device is compensated.
Further, an arch breaking mechanism is arranged between the material-gas separator and the discharger and used for preventing the discharger from being blocked by the ammonium chloride powder due to arch formation.
Furthermore, the material-gas separator is also connected with a precision filter for secondary filtration of powder in the gas.
Further, the precision filter is connected with a water cooler and used for cooling the gas; the cooler is connected to a low pressure buffer tank.
Further, the low pressure buffer tank is connected to an exhaust port through an exhaust duct, the exhaust port including a dry air exhaust valve.
Further, a humidity detection device is arranged on the exhaust pipeline.
Further, the ROOTS blower is connected to an intake port, which includes a dry air intake valve, by an intake duct.
Further, the air inlet pipeline and the exhaust pipeline are connected with a pressure detection device in parallel.
In summary, the invention has the following beneficial technical effects:
according to the invention, the problem of contact between ammonium chloride and external moisture in the conveying process is solved by adopting the closed circulating pneumatic conveying system, the air generated by the Roots blower has a certain temperature, and the flowability of ammonium chloride powder is increased, so that the possibility of ammonium chloride agglomeration caused by external temperature and humidity is reduced.
Drawings
Fig. 1 is a schematic structural diagram of an ammonium chloride powder drying air circulation pneumatic conveying system according to an embodiment of the present invention.
Wherein, 1, a Roots blower; 2. a rotating feeder; 3. a ripple compensator; 4. a dried material temporary storage device; 5. a delivery conduit; 6. a discharger; 7. an arch breaking mechanism; 8. a material-gas separator; 9. a precision filter; 10. a water cooler; 11. a low-pressure buffer tank; 12. a humidity detection device; 13. a dry air exhaust valve; 14. a dry air intake valve; 15. and a pressure detection device.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Referring to fig. 1, the ammonium chloride powder drying air circulation pneumatic conveying system of the embodiment comprises:
the rotary feeder 2 is used for supplying ammonium chloride powder and structurally comprises a rotor impeller with a plurality of blades, a shell, a sealing piece, a speed reducer and a motor. When the material falls down by its own weight and fills the gaps between the vanes, it is discharged at the lower part with the rotation of the vanes, so that the rotary feeder 2 can feed the material quantitatively and continuously. The rotary feeder 2 is often used in pneumatic output systems, for pressure output systems or negative pressure output systems. The rotary feeder 2 can uniformly and continuously feed materials to the material conveying pipe to ensure that the gas and the solid in the pneumatic output pipe are relatively stable, so that the pneumatic conveying can normally work, and simultaneously, the air pressure at the upper part and the lower part of the discharger 6 can be separated to play a role in locking air. The rotary feeder 2 is therefore an important component commonly used in pneumatic conveying systems.
The rotary feeder 2 is also connected with a dry material temporary storage device 4 for temporarily storing dry ammonium chloride powder; a ripple compensator 3 is arranged between the rotary feeder 2 and the dry material temporary storage device 4 for compensating for the deformation between the rotary feeder 2 and the dry material temporary storage device 4 caused by the temperature difference.
A Roots blower 1 is connected with a discharge hole of the rotary feeder 2 and used for ventilating ammonium chloride powder;
the rotary feeder 2 is connected to a material-gas separator 8 through a conveying pipeline 5, the material-gas separator 8 is used for carrying out material-gas separation after receiving ammonium chloride powder mixed with gas, solid ammonium chloride powder is connected to a discharger 6 for discharging, the gas enters a precision filter 9 for filtering, and a small amount of ammonium chloride powder still remaining in the gas is filtered secondarily. An arch breaking mechanism 7 is arranged between the material-gas separator 8 and the discharger 6 and used for preventing the discharger 6 from being blocked by the ammonium chloride powder due to arch formation.
The precision filter 9 is connected with a water cooler 10, and the gas is cooled by the water cooler 10.
The water cooler 10 is connected to a low pressure buffer tank 11 for low pressure buffering of discharged gas, and the low pressure buffer tank 11 is buffered by compressed air in a compression tank.
The low-pressure buffer tank 11 is connected to an exhaust port through an exhaust pipeline, and a dry air exhaust valve 13 is arranged on the exhaust port; the exhaust duct is provided with a humidity detection device 12 for detecting the humidity of the exhaust gas, and the humidity detection device adopts a hygrometer.
The roots blower 1 is connected to an air inlet, on which a dry air inlet valve 14 is provided, through an inlet duct.
In order to monitor the gas pressure in the gas inlet pipeline and the gas outlet pipeline, the gas inlet pipeline and the gas outlet pipeline are connected in parallel, and a pressure detection device 15 is connected to the parallel pipelines and adopts a pressure sensor.
The working principle is as follows:
the circulating pneumatic conveying system of the embodiment adopts PLC control, communication interfaces (Ethernet and RS 485) are reserved according to user requirements to realize remote communication control with a configuration or an upper computer, and PID control of the circulating pneumatic conveying system is divided into four parts, namely manual control, parameter setting, automatic control and a fault alarm page.
1. Manual control:
and detecting whether the running on/off of the Roots blower 1, the rotary feeder 2, the discharger 6, the arch breaking mechanism 7, the water cooler 10, the dry air exhaust valve 13 and the dry air inlet valve 14 is normal or not.
2. Setting parameters:
and setting parameters of a pressure detection device 15, a high-level alarm value of equipment operation pressure and a high-level alarm value of air source humidity.
3. Automatic control flow:
and starting the system static dry gas replacement, namely firstly opening the dry air exhaust valve 13, opening the dry air inlet valve 14 when the pressure detection device 15 detects that the pressure exceeds a set value, and finishing the system static dry gas replacement when the gas humidity transmitter detects that the humidity meets a parameter set value.
A normal conveying state; after the static dry gas replacement is finished, the dry air exhaust valve 13 and the dry air inlet valve 14 are closed, the water cooler 10 is opened, the Roots blower 1 is opened, then the discharger 6 and the arch breaking mechanism 7 are opened, and when the conveying pressure is stable, the rotary feeder 2 is opened to start the feeding operation. When the pressure detecting device 15 detects that the pressure exceeds the set value, the system controls the dry air exhaust valve 13 and the dry air intake valve 14 to be started and closed through the PLC, and the dry air is discharged in a supplementing mode. The whole closed-loop circulation system of the drying air is completed.
The above are all preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, so: equivalent changes made according to the structure, shape and principle of the invention shall be covered by the protection scope of the invention.
Claims (10)
1. The utility model provides an ammonium chloride powder dry air circulation pneumatic conveyor system which characterized in that includes:
a rotary feeder for providing a feed of ammonium chloride powder;
a discharge port of the rotary feeder is connected with a Roots blower for ventilating ammonium chloride powder;
the rotary feeder is connected to a material-gas separator through a conveying pipeline, and the material-gas separator is connected with a discharger.
2. The system according to claim 1, wherein the rotary feeder is further connected to a dry material temporary storage device for temporarily storing dry ammonium chloride powder.
3. The system according to claim 2, wherein a corrugated compensator is disposed between the rotary feeder and the dry material storage device for compensating for the deformation caused by temperature difference between the rotary feeder and the dry material storage device.
4. The system of claim 3, wherein an arch breaking mechanism is arranged between the material-gas separator and the discharger for preventing the ammonium chloride powder from arching and blocking the discharger.
5. The system for dry air circulation pneumatic conveying of ammonium chloride powder according to claim 4, wherein the gas separator is further connected with a precision filter for secondary filtration of powder in the gas.
6. The ammonium chloride powder dry air circulation pneumatic conveying system of claim 5, wherein the precision filter is connected with a water cooler for cooling the gas; the cooler is connected to a low pressure surge tank.
7. The air circulating pneumatic conveying system for ammonium chloride powder drying according to claim 6, characterized in that the low pressure buffer tank is connected to an exhaust port through an exhaust duct, and the exhaust port comprises a dry air exhaust valve.
8. The system according to claim 7, wherein a humidity detection device is disposed on the exhaust pipeline.
9. The ammonium chloride powder dry air circulating pneumatic conveying system of claim 8, wherein the roots blower is connected to an air inlet through an air inlet duct, the air inlet comprising a dry air inlet valve.
10. The system according to claim 9, wherein the air inlet pipeline and the air outlet pipeline are connected in parallel with a pressure detection device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310171346.7A CN115872163A (en) | 2023-02-28 | 2023-02-28 | Dry air circulation pneumatic conveying system of ammonium chloride powder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310171346.7A CN115872163A (en) | 2023-02-28 | 2023-02-28 | Dry air circulation pneumatic conveying system of ammonium chloride powder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115872163A true CN115872163A (en) | 2023-03-31 |
Family
ID=85761693
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310171346.7A Pending CN115872163A (en) | 2023-02-28 | 2023-02-28 | Dry air circulation pneumatic conveying system of ammonium chloride powder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115872163A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2034584U (en) * | 1988-04-01 | 1989-03-22 | 北京钢铁学院 | Blast furnace with appliance for distributing burden |
| JP2005089029A (en) * | 2003-09-12 | 2005-04-07 | Hitachi Plant Eng & Constr Co Ltd | Pneumatic conveyor |
| CN102230044A (en) * | 2010-07-23 | 2011-11-02 | 北京首钢机电有限公司 | Four-bucket bell-less charging device |
| CN106697902A (en) * | 2016-12-08 | 2017-05-24 | 北京神雾环境能源科技集团股份有限公司 | Distributing device |
| CN108163581A (en) * | 2017-11-28 | 2018-06-15 | 荆门市格林美新材料有限公司 | A kind of automatic conveying system |
| CN210260332U (en) * | 2019-06-27 | 2020-04-07 | 湖南宏工智能科技有限公司 | Closed loop pneumatic conveying system |
| CN210735553U (en) * | 2019-10-31 | 2020-06-12 | 高密银鹰新材料股份有限公司 | Circulating air conveying system |
| CN211870763U (en) * | 2020-01-14 | 2020-11-06 | 宏工科技股份有限公司 | Conveying system for deliquescent materials |
| CN213010765U (en) * | 2020-08-21 | 2021-04-20 | 上海东睿化学有限公司 | Nitrogen circulating device for conveying powder through airflow |
| CN215625322U (en) * | 2021-06-20 | 2022-01-25 | 山东东辰瑞森新材料科技有限公司 | Nitrogen closed-loop conveying system applied to PA particles |
-
2023
- 2023-02-28 CN CN202310171346.7A patent/CN115872163A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2034584U (en) * | 1988-04-01 | 1989-03-22 | 北京钢铁学院 | Blast furnace with appliance for distributing burden |
| JP2005089029A (en) * | 2003-09-12 | 2005-04-07 | Hitachi Plant Eng & Constr Co Ltd | Pneumatic conveyor |
| CN102230044A (en) * | 2010-07-23 | 2011-11-02 | 北京首钢机电有限公司 | Four-bucket bell-less charging device |
| CN106697902A (en) * | 2016-12-08 | 2017-05-24 | 北京神雾环境能源科技集团股份有限公司 | Distributing device |
| CN108163581A (en) * | 2017-11-28 | 2018-06-15 | 荆门市格林美新材料有限公司 | A kind of automatic conveying system |
| CN210260332U (en) * | 2019-06-27 | 2020-04-07 | 湖南宏工智能科技有限公司 | Closed loop pneumatic conveying system |
| CN210735553U (en) * | 2019-10-31 | 2020-06-12 | 高密银鹰新材料股份有限公司 | Circulating air conveying system |
| CN211870763U (en) * | 2020-01-14 | 2020-11-06 | 宏工科技股份有限公司 | Conveying system for deliquescent materials |
| CN213010765U (en) * | 2020-08-21 | 2021-04-20 | 上海东睿化学有限公司 | Nitrogen circulating device for conveying powder through airflow |
| CN215625322U (en) * | 2021-06-20 | 2022-01-25 | 山东东辰瑞森新材料科技有限公司 | Nitrogen closed-loop conveying system applied to PA particles |
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Application publication date: 20230331 |
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| RJ01 | Rejection of invention patent application after publication |