CN208503955U - A kind of gravity flow concentrated nitric acid unloading system - Google Patents
A kind of gravity flow concentrated nitric acid unloading system Download PDFInfo
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- CN208503955U CN208503955U CN201820932042.2U CN201820932042U CN208503955U CN 208503955 U CN208503955 U CN 208503955U CN 201820932042 U CN201820932042 U CN 201820932042U CN 208503955 U CN208503955 U CN 208503955U
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- nitric acid
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Abstract
The utility model provides a kind of gravity flow concentrated nitric acid unloading system, including the underground concentrated nitric acid tank being arranged in underground pond, the nitric acid input port of underground concentrated nitric acid tank is communicated with underground concentrated nitric acid input channel, and concentrated nitric acid when unloading in tank car passes through the gravity flow of underground concentrated nitric acid input channel under the effect of gravity and enters in the concentrated nitric acid tank of underground；Underground concentrated nitric acid tank is connected to by concentrated nitric acid shifting pump with ground concentrated nitric acid tank.The utility model is by being configured lower concentrated nitric acid tank, since it is arranged in underground, and the tank car for transporting concentrated nitric acid is located on the ground, there is difference in height between the two, concentrated nitric acid when therefore unloading in tank car flows automatically under the effect of gravity to be entered in the concentrated nitric acid tank of underground, then the concentrated nitric acid in the concentrated nitric acid tank of underground is pumped into the concentrated nitric acid tank of ground by concentrated nitric acid shifting pump again, completes process of entirely unloading；It eliminates dynamic equipment and connect the leakage security risk that may occur with tank car, improve safety coefficient.
Description
Technical field
The utility model belongs to concentrated nitric acid production field, is related to a kind of gravity flow concentrated nitric acid unloading system.
Background technique
Industry concentrated nitric acid (HNO398%) it is a kind of industrial chemical being in extreme danger that mass fraction, which is greater than, have extremely strong
Corrosivity.The aerial concentrated nitric acid of exposure can volatilize a large amount of oxides of nitrogen gas (NOx), oxides of nitrogen gas, which belongs to, to be had
Poisonous gas.Therefore it unloads in process (being transferred to storage tank process from tank car) in concentrated nitric acid, it is necessary to which strict guarantee is leaked without nitric acid.
In order to eliminate safe hidden trouble, improve working environment, simplify and unload process, needs a kind of novel concentrated nitric acid and unload dress
It sets.
Utility model content
Aiming at the problems existing in the prior art, the utility model provides a kind of gravity flow concentrated nitric acid unloading system, eliminates
Security risk is leaked, field worker working environment is improved, simplifies process of unloading, improves safety coefficient.
The utility model is to be achieved through the following technical solutions:
A kind of gravity flow concentrated nitric acid unloading system, including the underground concentrated nitric acid tank being arranged in underground pond, the dense nitre in underground
The nitric acid input port of acid storage tank is communicated with underground concentrated nitric acid input channel, and concentrated nitric acid when unloading in tank car leads under the effect of gravity
The gravity flow of underground concentrated nitric acid input channel is crossed to enter in the concentrated nitric acid tank of underground；
Underground concentrated nitric acid tank is connected to by concentrated nitric acid shifting pump with ground concentrated nitric acid tank；The import of concentrated nitric acid shifting pump
It is provided with the first pneumatic cut-off valve on pipeline, the first pneumatic control valve is provided on the outlet conduit of concentrated nitric acid shifting pump；First
Concentrated nitric acid reflux line is set between the outlet and underground concentrated nitric acid tank of pneumatic control valve, the is arranged on concentrated nitric acid reflux line
Two pneumatic control valves.
Preferably, alarm, compressed air are detected equipped with compressed air purging pipeline and oxides of nitrogen gas in underground pond
The gas access of blow line is connected to air compressor；Pneumatic cut-off valve is set on compressed air purging pipeline, works as nitrogen oxides
When gas detecting and alarming instrument is alarmed, the pneumatic cut-off valve on compressed air purging pipeline is automatically opened, and compressed air enters underground
Air in pond displacement underground pond；Gas at the end of oxides of nitrogen gas detection alarm alarm, on compressed air purging pipeline
Dynamic stop valve is automatically closed.
Further, the part of compressed air purging pipeline bottom of pond portion located underground is porous steel pipe.
Preferably, it is additionally provided in the connecting pipe of underground concentrated nitric acid tank and ground concentrated nitric acid tank and is shifted with concentrated nitric acid
The concentrated nitric acid collecting tank of parallel arrangement is pumped, is equipped with valve on the inlet/outlet pipeline of concentrated nitric acid collecting tank.
Preferably, underground bottom of pond portion is equipped with catch pit.
Preferably, underground concentrated nitric acid tank is equipped with far transmission level meter and breather valve, and the top of underground concentrated nitric acid tank is arranged
Port is connected to by gas compressor with the gas access of gas absorbing device.
Compared with prior art, the utility model has technical effect beneficial below:
The utility model since it is arranged in underground, and transports the tank car of concentrated nitric acid by being configured lower concentrated nitric acid tank
Positioned on the ground, concentrated nitric acid when having difference in height between the two, therefore unloading in tank car flows automatically dense into underground under the effect of gravity
In nitric acid storage tank, the concentrated nitric acid in the concentrated nitric acid tank of underground is then pumped by ground concentrated nitric acid tank by concentrated nitric acid shifting pump again
In, complete process of entirely unloading；It eliminates dynamic equipment and connect the leakage security risk that may occur with tank car, improve safety system
Number.Concentrated nitric acid shifting pump inlet and outlet pipeline and concentrated nitric acid reflux line are respectively provided with operated pneumatic valve, the pneumatic cutting of inlet pipeline setting
Pneumatic control valve is arranged in valve, outlet conduit and concentrated nitric acid reflux line, can so as to realize the remote purpose for adjusting control
Enter underground pond operating frequency with reduction personnel, improve field worker working environment, simplifies process of unloading.
Further, compressed air purging pipeline and oxides of nitrogen gas detection alarm are configured in underground pond, it can be with
Nitrous oxides concentration in air in real-time monitoring pond, when concentration over-standard, oxides of nitrogen gas detects the same time control of alarm alarm
Pneumatic cut-off valve on compressed-air line processed automatically opens, and to allow compressed air into air in bottom of pond displacement pool, guarantees pond
Nitrous oxides concentration is in safe range in interior air.
Further, concentrated nitric acid collecting tank is equipped in underground pond, when concentrated nitric acid shifting pump maintenance craft is handled, concentrated nitric acid is received
Collection slot is used to recycle the concentrated nitric acid of outlet.
Further, underground bottom of pond portion sets catch pit, collects the nitric acid of ponding or leakage.
Further, the far transmission level meter on the concentrated nitric acid tank of underground can prevent liquid level in tank excessively high or too low；Top
Portion's exhaust outlet is connected on gas compressor suction line, makes to accelerate to unload in micro-vacuum state inside the concentrated nitric acid tank of underground
Vehicle speed prevents oxides of nitrogen gas in concentrated nitric acid from overflowing.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model.
In figure: ground concentrated nitric acid tank 1, underground concentrated nitric acid tank 2, concentrated nitric acid shifting pump 3, air compressor 4, nitrogen oxidation
Object gas detecting and alarming instrument 5, concentrated nitric acid collecting tank 6, the first pneumatic cut-off valve 7, the first pneumatic control valve 8, the second pneumatic adjusting
Valve 9, the first far transmission level meter 10, the first breather valve 11, gas compressor 12, the second far transmission level meter 13, the second breather valve 14,
Second pneumatic cut-off valve 15, compressed air purging pipeline 16, tank car 17, underground concentrated nitric acid input channel 18, concentrated nitric acid return pipe
Road 19, gas absorbing device 20, catch pit 21.
Specific embodiment
The following describes the utility model in further detail with reference to the accompanying drawings, it is described be the explanation to the utility model and
It is not to limit.
In order to solve the problems, such as that concentrated nitric acid is unloaded, the utility model provides a kind of gravity flow concentrated nitric acid unloading system.Such as Fig. 1
It is shown, underground pond is built near ground concentrated nitric acid tank 1, lower concentrated nitric acid tank 2, the storage of underground concentrated nitric acid are configured in underground pond
The nitric acid input port of tank 2 is communicated with underground concentrated nitric acid input channel 18, and concentrated nitric acid when unloading in tank car 17 is under the effect of gravity
Entered in underground concentrated nitric acid tank 2 by the gravity flow of underground concentrated nitric acid input channel 18.Underground concentrated nitric acid tank 2 is turned by concentrated nitric acid
It moves pump 3 to be connected to ground concentrated nitric acid tank 1, concentrated nitric acid shifting pump 3 is used to for the concentrated nitric acid in underground concentrated nitric acid tank 2 being transferred to
In ground concentrated nitric acid tank 1.In this example, underground pond is divided into two using divider wall, is respectively used to arrangement underground concentrated nitric acid storage
Tank 2 and concentrated nitric acid shifting pump 3, the connecting pipe between underground concentrated nitric acid tank 2 and concentrated nitric acid shifting pump 3 are worn from divider wall
It crosses.
The first pneumatic cut-off valve 7 is provided on the inlet pipeline of concentrated nitric acid shifting pump 3, in going out for concentrated nitric acid shifting pump 3
Mouth pipeline is equipped with the first pneumatic control valve 8, is arranged between the outlet and underground concentrated nitric acid tank 2 of the first pneumatic control valve 8 dense
The second pneumatic control valve 9 is arranged on concentrated nitric acid reflux line 19 in nitric acid reflux line 19.
Underground concentrated nitric acid tank 2 is equipped with far transmission level meter 10 and breather valve 11, the top vent of underground concentrated nitric acid tank 2
Mouth is connected to by gas compressor 12 with the gas access of gas absorbing device 20；Ground concentrated nitric acid tank 1 is equipped with teletransmission liquid
Position meter 13 and breather valve 14,1 top vent of ground concentrated nitric acid tank pass through gas compressor 12 and gas absorbing device 20
Gas access connection.
It is additionally provided with concentrated nitric acid shifting pump 3 simultaneously in the connecting pipe of underground concentrated nitric acid tank 2 and ground concentrated nitric acid tank 1
Join the concentrated nitric acid collecting tank 6 of arrangement, is equipped with valve on the inlet/outlet pipeline of concentrated nitric acid collecting tank 6；Concentrated nitric acid shifting pump 3 overhauls
When process, concentrated nitric acid collecting tank 6 is used to recycle the concentrated nitric acid of outlet.
16 He of compressed air purging pipeline is provided in 3 place underground pond of underground concentrated nitric acid tank 2 and concentrated nitric acid shifting pump
Oxides of nitrogen gas detects alarm 5.The gas access of compressed air purging pipeline 16 is connected to air compressor, compressed air
Second pneumatic cut-off valve 15 is set on blow line 16, and when the exceeded alarm of oxides of nitrogen gas in underground pond, compressed air is blown
The second pneumatic cut-off valve 15 on sweeping 16 automatically opens, and compressed air enters air in underground pond displacement underground pond；Underground
After nitrous oxides concentration is qualified in air in pond, the second pneumatic cut-off valve 15 on compressed air purging pipeline 16 is automatically closed.
Compressed air purging pipeline 16 is porous steel pipe.
The underground bottom of pond portion of underground concentrated nitric acid tank 2 and concentrated nitric acid shifting pump 3 is additionally provided with catch pit 21.
The gravity flow concentrated nitric acid unloading system process flow of the utility model illustrates:
1, the far transmission level meter 10 on 2 top of underground concentrated nitric acid tank can prevent liquid level in tank excessively high or too low.
2, breather valve 11 is arranged in concentrated nitric acid tank 2 top in underground, and top vent is connected to gas pressure by exhaust line
On 12 suction line of contracting machine, main purpose is to make in micro-vacuum state inside underground concentrated nitric acid tank 2, and vehicle speed is unloaded in quickening,
Prevent oxides of nitrogen gas in concentrated nitric acid from overflowing.
3, compressed air purging pipeline 16 is configured in 3 place underground pond of underground concentrated nitric acid tank 2 and concentrated nitric acid shifting pump
Alarm 5 is detected with oxides of nitrogen gas.When the exceeded alarm of oxides of nitrogen gas in underground pond, compressed air purging pipeline 16
On the second pneumatic cut-off valve 15 automatically open air in displacement pool；After nitrous oxides concentration is qualified in air in pond, compression is empty
Pneumatic cut-off valve on gas pipeline is automatically closed；It thereby may be ensured that production safety.
4, concentrated nitric acid shifting pump 3 imports and exports pipeline and concentrated nitric acid reflux line 19 in addition to conventional hand valve is arranged, and is respectively provided with gas
Movable valve.The first pneumatic cut-off valve 7 is arranged in inlet pipeline, and pneumatic control valve is arranged in outlet conduit and concentrated nitric acid reflux line 19,
Personnel can be reduced and enter underground pond operating frequency.
5, concentrated nitric acid collecting tank is equipped in 3 place underground pond of concentrated nitric acid shifting pump.The processing of 3 maintenance craft of concentrated nitric acid shifting pump
When, concentrated nitric acid collecting tank is used to recycle the concentrated nitric acid of outlet.
6, the underground bottom of pond portion of underground concentrated nitric acid tank 2 and concentrated nitric acid shifting pump 3 sets catch pit, collects ponding or leakage
Nitric acid.
The advantage of gravity flow concentrated nitric acid unloading system is:
1, concentrated nitric acid is detached from tank car 17 by flow by gravity, and it is hidden that the dynamic equipment of elimination connect the safety that may occur with tank car 17
Suffer from.
2, a large amount of automatic control devices are arranged in whole device, reduce worker operation frequency.
3, it is equipped with safe enough facility, improves safety coefficient.
Claims (6)
1. a kind of gravity flow concentrated nitric acid unloading system, which is characterized in that including the underground concentrated nitric acid tank being arranged in underground pond
(2), the nitric acid input port of underground concentrated nitric acid tank (2) is communicated with underground concentrated nitric acid input channel (18), tank car (17) when unloading
In concentrated nitric acid pass through under the effect of gravity underground concentrated nitric acid input channel (18) gravity flow enter underground concentrated nitric acid tank (2) in；
Underground concentrated nitric acid tank (2) is connected to by concentrated nitric acid shifting pump (3) with ground concentrated nitric acid tank (1)；Concentrated nitric acid shifting pump
(3) it is provided on inlet pipeline the first pneumatic cut-off valve (7), is provided with first on the outlet conduit of concentrated nitric acid shifting pump (3)
Pneumatic control valve (8)；Concentrated nitric acid return pipe is set between the outlet and underground concentrated nitric acid tank (2) of the first pneumatic control valve (8)
The second pneumatic control valve (9) are arranged on concentrated nitric acid reflux line (19) in road (19).
2. gravity flow concentrated nitric acid unloading system according to claim 1, which is characterized in that be furnished with compressed air in underground pond
Blow line (16) and oxides of nitrogen gas detection alarm (5), the gas access of compressed air purging pipeline (16) are connected to empty
Air compressor (4)；Pneumatic cut-off valve is arranged on (16) in compressed air purging pipeline, when oxides of nitrogen gas detects alarm (5)
When alarm, the pneumatic cut-off valve on compressed air purging pipeline (16) is automatically opened, and compressed air enters underground pond displacement underground
Air in pond；At the end of oxides of nitrogen gas detection alarm (5) alarm, pneumatically cutting on compressed air purging pipeline (16)
Disconnected valve is automatically closed.
3. gravity flow concentrated nitric acid unloading system according to claim 2, which is characterized in that compressed air purging pipeline (16)
The part of bottom of pond portion located underground is porous steel pipe.
4. gravity flow concentrated nitric acid unloading system according to claim 1, which is characterized in that underground concentrated nitric acid tank (2) with
The concentrated nitric acid collecting tank with concentrated nitric acid shifting pump (3) parallel arrangement is additionally provided in the connecting pipe of ground concentrated nitric acid tank (1)
(6), valve is equipped on the inlet/outlet pipeline of concentrated nitric acid collecting tank (6).
5. gravity flow concentrated nitric acid unloading system according to claim 1, which is characterized in that underground bottom of pond portion is equipped with catch pit
(21)。
6. gravity flow concentrated nitric acid unloading system according to claim 1, which is characterized in that on underground concentrated nitric acid tank (2)
Equipped with far transmission level meter (10) and breather valve (11), the top vent of underground concentrated nitric acid tank (2) passes through gas compressor
(12) it is connected to the gas access of gas absorbing device (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820932042.2U CN208503955U (en) | 2018-06-15 | 2018-06-15 | A kind of gravity flow concentrated nitric acid unloading system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820932042.2U CN208503955U (en) | 2018-06-15 | 2018-06-15 | A kind of gravity flow concentrated nitric acid unloading system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208503955U true CN208503955U (en) | 2019-02-15 |
Family
ID=65285290
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820932042.2U Active CN208503955U (en) | 2018-06-15 | 2018-06-15 | A kind of gravity flow concentrated nitric acid unloading system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208503955U (en) |
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2018
- 2018-06-15 CN CN201820932042.2U patent/CN208503955U/en active Active
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