CN213179153U - Red phosphorus drying device with safety protection - Google Patents
Red phosphorus drying device with safety protection Download PDFInfo
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- CN213179153U CN213179153U CN202021613784.2U CN202021613784U CN213179153U CN 213179153 U CN213179153 U CN 213179153U CN 202021613784 U CN202021613784 U CN 202021613784U CN 213179153 U CN213179153 U CN 213179153U
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- safety protection
- drying machine
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Abstract
The utility model relates to a red phosphorus drying device with safety protection. The utility model discloses a concrete embodiment does, a red phosphorus drying device who has safety protection, include vacuum drying machine, condenser, moisture receiving tank, vacuum buffer tank, vacuum pump through the pipe connection, tail gas absorbing device still sets up low vacuum degree protector between vacuum drying machine and the condenser. The beneficial effects of the utility model are that, prevent that the outside air from getting into vacuum drying machine, avoid red phosphorus to contact the outside air and take place the burning, effectively improve red phosphorus drying process's security.
Description
Technical Field
The utility model relates to a drying device, in particular to a red phosphorus drying device with safety protection.
Background
In the production of red phosphorus, reduced pressure drying is an essential step, red phosphorus is inflammable, and toxic and irritant smoke is emitted during combustion, which causes great harm to production personnel and environment. At present, red phosphorus production enterprises rarely adopt safety measures in the process of decompression drying, and a few general protection measures are to install a safety valve in a drying system, wherein the safety valve only can reduce the danger when the danger occurs, but can not effectively avoid the dangerous situation, and the sudden situations such as sudden failure and sudden power failure of a vacuum pump can be met during decompression drying, at the moment, moisture in air and the like can be instantly and rapidly gushed into the drying system in a large quantity, so that the danger of combustion and explosion occurs, and the safety performance is poor.
Disclosure of Invention
The utility model discloses to the poor problem of present red phosphorus drying device security performance, provide a red phosphorus drying device who has safety protection.
In order to solve the problem, the technical scheme of the utility model be, a red phosphorus drying device who has safety protection, include that vacuum drying machine, condenser, moisture through the pipe connection receive jar, vacuum buffer tank, vacuum pump, tail gas absorbing device still sets up low vacuum protector between vacuum drying machine and the condenser.
Preferably, the low vacuum degree protection device comprises a low vacuum degree alarm device and a nitrogen charging device of the vacuum dryer. The advantage is protecting drying device, improves the security.
Preferably, the low vacuum degree alarm device comprises a pressure sensor arranged on a connecting pipeline of the vacuum dryer and the condenser and an audible and visual alarm electrically connected with the pressure sensor. The vacuum valve has the advantages that when the vacuum is reduced, an alarm is triggered, and workers are informed to carry out emergency treatment in time.
Preferably, the nitrogen filling device of the vacuum dryer comprises a nitrogen filling electromagnetic valve and a nitrogen storage tank, the nitrogen filling electromagnetic valve is connected to a pipeline between the vacuum dryer and the condenser, the nitrogen storage tank is connected with the nitrogen filling electromagnetic valve, and the nitrogen filling electromagnetic valve is electrically connected with the pressure sensor. The advantage is that nitrogen is filled when the vacuum degree is continuously reduced, so as to prevent red phosphorus from burning.
Preferably, the device further comprises a safety valve, one end of the safety valve is connected with an exhaust port of the vacuum dryer, and the other end of the safety valve is connected with the tail gas absorption device. The safety valve has the advantages that when the safety protection device fails and the air pressure suddenly increases to the set pressure of the safety valve due to combustion in the vacuum dryer, the safety valve is automatically opened, harmful gas is discharged into the tail gas absorption device, and the vacuum dryer is prevented from exploding.
Preferably, the vacuum pump further comprises a check valve arranged on a pipeline between the vacuum buffer tank and the vacuum pump. The advantage is that air gets into vacuum drying machine when preventing the vacuum pump trouble.
According to the technical scheme, the utility model has the advantages of it is following:
the utility model discloses a red phosphorus drying device who has safety protection adopts check valve, low vacuum alarm device, vacuum drying machine to fill nitrogen device and relief valve, has constituteed level four safety protection, abundant support personnel and environmental safety.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
In the figure: 1. the system comprises a vacuum drier, 2, a nitrogen filling electromagnetic valve, 3, a safety valve, 4, a pressure sensor, 5, an audible and visual alarm, 6, a condenser, 7, a moisture receiving tank, 8, a vacuum buffer tank, 9, a check valve, 10, a vacuum pump, 11, a tail gas absorption device and 12, a nitrogen storage tank.
Detailed Description
As shown in fig. 1, the red phosphorus drying device with safety protection of the present invention comprises a vacuum drying machine 1, a condenser 6, a moisture receiving tank 7, a vacuum buffer tank 8, a vacuum pump 10 and a tail gas absorption device 11 which are connected by a pipeline, wherein a nitrogen-filled electromagnetic valve 2, a safety valve 3, a pressure sensor 4, an audible and visual alarm 5 and a check valve 9 are additionally arranged, the pressure sensor 4 is arranged on the connecting pipeline of the vacuum drying machine 1 and the condenser 6, and the audible and visual alarm 5 is electrically connected with the pressure sensor 4; the nitrogen charging electromagnetic valve 2 is connected to a pipeline between the vacuum dryer 1 and the condenser, the nitrogen storage tank 12 is connected with the nitrogen charging electromagnetic valve 2, and the nitrogen charging electromagnetic valve 2 is electrically connected with the pressure sensor 4; one end of the safety valve 3 is connected with the vacuum drier 1, and the other end is connected with the tail gas absorption device 11; the air inlet of the check valve 9 is connected with the vacuum buffer tank 8, and the air outlet is connected with the vacuum pump 10.
During normal work, vacuum drying machine 1 is at vertical in-plane rotation, and red phosphorus stirs from top to bottom because rotation and gravity action in vacuum drying machine 1, and under the low pressure environment, moisture in the red phosphorus evaporates because of the boiling point reduction, is taken out by vacuum pump 10, and condenser 6 condenses into the water droplet through flowing through, and the water droplet is stored in moisture receiving tank 7, and other gases flow through vacuum buffer tank 8, check valve 9 and vacuum pump 10 in proper order, finally get into tail gas absorbing device 11.
The working process of the safety device is as follows:
(1) when power failure or vacuum pump 10 breaks down, the atmospheric pressure that check valve 9 connects vacuum pump 10 one side increases suddenly, and check valve 9 closes at once, prevents that the external gas from getting into vacuum drying machine 1, avoids red phosphorus to contact the external gas and takes place the burning.
(2) The pressure sensor 4 is provided with two pressure values, the first set value is-0.09 MPa, and the second set value is-0.08 MPa. When the pressure sensor 4 detects that the pressure in the vacuum drier 1 rises to-0.09 MPa, the audible and visual alarm 4 is triggered to inform a worker of emergency treatment; when the air pressure continues to rise to-0.08 MPa, the nitrogen filling electromagnetic valve 2 is opened, and the nitrogen storage tank 12 fills nitrogen into the vacuum dryer 1 and recovers the normal pressure state; when the safety device fails and air enters the vacuum dryer 1 to cause burning of red phosphorus to generate a large amount of phosphorus pentoxide gas, the pressure is suddenly increased to the set pressure of the safety valve 3, the safety valve 3 is opened to release the pressure, and the flushed gas is absorbed and treated by the tail gas absorption device 11.
Through the device and the work, safety accidents in the decompression drying process can be avoided as much as possible.
Claims (6)
1. The utility model provides a red phosphorus drying device with safety protection, includes through pipe connection's vacuum drying machine (1), condenser (6), moisture receiving tank (7), vacuum buffer tank (8), vacuum pump (10), tail gas absorbing device (11), its characterized in that, the vacuum drying machine with still set up low vacuum degree protector between the condenser.
2. The red phosphorus drying apparatus with safety protection as claimed in claim 1, wherein the low vacuum degree protection device comprises a low vacuum degree alarm device and a nitrogen charging device of a vacuum drying machine.
3. The red phosphorus drying device with safety protection according to claim 1 or 2, wherein the low vacuum degree alarm device comprises a pressure sensor (4) arranged on a connecting pipeline of the vacuum drying machine (1) and the condenser (6) and an audible and visual alarm (5) electrically connected with the pressure sensor (4).
4. The red phosphorus drying device with safety protection according to claim 3, wherein the nitrogen charging device of the vacuum drying machine comprises a nitrogen charging solenoid valve (2) and a nitrogen storage tank (12), the nitrogen charging solenoid valve (2) is connected to the pipeline between the vacuum drying machine (1) and the condenser (6), the nitrogen storage tank (12) is connected to the nitrogen charging solenoid valve (2), and the nitrogen charging solenoid valve (2) is electrically connected to the pressure sensor (4).
5. The red phosphorus drying apparatus with safety protection according to claim 1, further comprising a safety valve (3), wherein one end of the safety valve (3) is connected to the exhaust port of the vacuum dryer (1), and the other end is connected to the tail gas absorption device (11).
6. The red phosphorus drying apparatus with safety protection according to claim 1, further comprising a check valve (9) disposed on a pipe between the vacuum buffer tank (8) and the vacuum pump (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021613784.2U CN213179153U (en) | 2020-08-05 | 2020-08-05 | Red phosphorus drying device with safety protection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021613784.2U CN213179153U (en) | 2020-08-05 | 2020-08-05 | Red phosphorus drying device with safety protection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213179153U true CN213179153U (en) | 2021-05-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021613784.2U Active CN213179153U (en) | 2020-08-05 | 2020-08-05 | Red phosphorus drying device with safety protection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213179153U (en) |
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2020
- 2020-08-05 CN CN202021613784.2U patent/CN213179153U/en active Active
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