CN201930762U - Nitric acid diluting device - Google Patents
Nitric acid diluting device Download PDFInfo
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- CN201930762U CN201930762U CN2010206303166U CN201020630316U CN201930762U CN 201930762 U CN201930762 U CN 201930762U CN 2010206303166 U CN2010206303166 U CN 2010206303166U CN 201020630316 U CN201020630316 U CN 201020630316U CN 201930762 U CN201930762 U CN 201930762U
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- nitric acid
- tank
- supply pump
- pipeline
- thinning
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Abstract
The utility model relates to a nitric acid diluting device, a concentrated nitric acid storage tank of the device is connected to an acid unloading inlet pipe and a supply pump of a metering tank via a valve pipeline and connected to a metering tank via an electric ball valve, a supply pump of a diluting tank enters into the nitric acid diluting tank under the control of the electric ball valve, the nitric acid diluting tank is connected with a circulating and supply pump of the diluting tank via a pipeline valve, and the device is controlled by a programmable logic controller (PLC). A liquid inlet of a nitric acid diluting tank body is connected through the pipeline and directly inserted into the bottom of the tank body, a diversion pipe is arranged at the bottom of a liquid inlet pipe, a plurality of small holes which are distributed uniformly are formed on the lower side of the diversion pipe, and a temperature and liquid level control device is mounted in the diluting tank. By adopting the nitric acid diluting device, concentrated nitric acid with the concentration of 98% can be tolerant, heat generated during dilution can be sustained, and the dilution efficiency is further high.
Description
Technical field
The utility model relates to a kind of red fuming nitric acid (RFNA) diluent facilities, specifically is the nitric acid air mix facilities that can tolerate the nitric acid of 98% concentration and bear the heat that is produced when diluting.
Background technology
The price of nitric acid mainly is that content with nitric acid calculates on the market, and equate under the situation at nitric acid content, the price of red fuming nitric acid (RFNA) is far below the price of rare nitric acid, and the nitric acid that enterprise uses all is rare nitric acid mostly, enterprise at a large amount of use nitric acid, increasing by a cover red fuming nitric acid (RFNA) diluent facilities, buy the red fuming nitric acid (RFNA) dilution and be rare nitric acid, is a measure of effectively saving cost.But red fuming nitric acid (RFNA) belongs to strong acid, can produce a large amount of heats during dilution, and common equipment is difficult to bear the heat of the corrosion and the abrupt release of strong acid.The existing equipment dilution efficiency is low, and antiseptic power is poor, has increased the difficulty of maintaining.
The utility model content
The purpose of this utility model provides a kind of nitric acid air mix facilities, and it can tolerate concentration is 98% nitric acid and bears heat and the dilution efficiency height that dilution the time is produced.
The utility model is realized by following technical proposals: a kind of nitric acid air mix facilities, and by the red fuming nitric acid (RFNA) storage tank, unload acid and measuring tank supply pump, electrical ball valve, measuring tank, thinning tank supply pump, electrical ball valve, nitric acid thinning tank, thinning tank circulation and supply pump, heat-exchangers of the plate type, device for absorbing tail gas, tail gas absorbent recirculation pump and rare nitric acid storage tank and be linked and packed and form.Concrete structure is: the red fuming nitric acid (RFNA) storage tank is connected to through valve pipe and unloads sour inlet tube and measuring tank supply pump, insert measuring tank through electrical ball valve, enter the nitric acid thinning tank through the thinning tank supply pump by electrical ball valve control, the nitric acid thinning tank connects thinning tank circulation and supply pump by pipeline valve, circulation time pipeline fishplate bar formula heat exchanger backflow nitric acid thinning tank, pipeline inserts rare nitric acid storage tank when confessing, the acid gas that the nitric acid thinning tank produces enters device for absorbing tail gas through blast pipe, absorb by the pure water spray, absorption liquid is returned the nitric acid thinning tank by the tail gas absorbent recirculation pump through pipeline, or connects production line dosing district through pipeline.System is by the PLC Controlled by Programmable Controller.
The operation principle of described nitric acid air mix facilities is:
In the nitric acid thinning tank, add earlier during dilution and calculate good pure water amount, by supply pump the concentrated nitric acid pump in the measuring tank is extracted into thinning tank then, utilize air compressor machine gas to stir.The reaction heat that dilution is sent is taken away by heat-exchangers of the plate type, guarantees that the thinning tank temperature is no more than 45 ℃, and the tail gas of generation then absorbs recycling by a pure water jar.
The beneficial effects of the utility model are:
1, adopts compressed air to stir, liquid gas is evenly distributed, the dilution efficiency height.
2, adopt that heat-exchangers of the plate type is rare takes away the reaction heat that the process of releasing is sent, guarantee that the thinning tank temperature is no more than 45 ℃.
3, the corrosive environment of tolerance nitric acid is not easy to produce the equipment fault that causes because of corrosion, guarantees safety, long-time ordinary production, and the utilization rate height, discharging is few, and ambient influnence is few, helps operation.
Description of drawings
Fig. 1 is a kind of nitric acid air mix facilities structural representation described in the utility model.
Being labeled as among Fig. 1:
1, red fuming nitric acid (RFNA) storage tank, 2, unload acid and measuring tank supply pump, 3, electrical ball valve, 4, measuring tank, 5, thinning tank supply pump, 6, electrical ball valve, 7, the nitric acid thinning tank, 8, thinning tank circulation and supply pump, 9, heat-exchangers of the plate type, 10, device for absorbing tail gas, 11, tail gas absorbent recirculation pump, 12, rare nitric acid storage tank, 13, unload acid tube, 14, air compressor machine gas, 15, first DI, 16, the acid gas floss hole, 17, second DI, 18, cooling water, 19, to the dosing district, 20, to the cooling pond.
Fig. 2 is the structural representation of nitric acid thinning tank.
Being labeled as among Fig. 2:
21, the first liquid level mouth, 22, the second liquid level mouth, 23, evacuation port, 24, temperature-measuring port, 25, inlet, 26, exhaust outlet, 27, purified water inlet, 28, loop head, 29, standby mouthful, 30, the compressed air inlet, 31, liquid outlet, 32, leakage fluid dram.
Fig. 3 is nitric acid dilution flow chart.
The specific embodiment
Below by drawings and Examples the technical solution of the utility model is further described.
Nitric acid air mix facilities described in the utility model is by red fuming nitric acid (RFNA) storage tank 1, unload acid and measuring tank supply pump 2, electrical ball valve 3, measuring tank 4, thinning tank supply pump 5, electrical ball valve 6, nitric acid thinning tank 7, thinning tank circulation and supply pump 8, heat-exchangers of the plate type 9, device for absorbing tail gas 10, tail gas absorbent recirculation pump 11 and rare nitric acid storage tank 12 and be linked and packed and form.
Concrete structure and connected mode are: red fuming nitric acid (RFNA) storage tank 1 is connected to through valve pipe and unloads acid and measuring tank supply pump 2, the pumping hole sour inlet tube of unloading in addition; Unload acid and measuring tank supply pump 2 and insert measuring tank 4 through electrical ball valve 3, by electrical ball valve 6 controls, pipeline enters nitric acid thinning tank 7 through thinning tank supply pump 5; Nitric acid thinning tank 7 connects thinning tank circulation and supply pump 8 by pipeline valve, circulation time pipeline fishplate bar formula heat exchanger 9 backflow nitric acid thinning tanks 7, and pipeline inserts rare nitric acid storage tank 12 when confessing; The acid gas that nitric acid thinning tank 7 produces enters device for absorbing tail gas 10 through blast pipe, is absorbed by the pure water spray, and absorption liquid is returned nitric acid thinning tank 7 by tail gas absorbent recirculation pump 11 through pipeline, or connects production line dosing district through pipeline.
Material that nitric acid air mix facilities described in the utility model is selected for use and assembling connected mode are:
(1) the red fuming nitric acid (RFNA) storage tank 1
Because of stainless steel can react with red fuming nitric acid (RFNA), and aluminium and iron and red fuming nitric acid (RFNA) can produce passivation reaction, for guaranteeing to dilute 5t 98% red fuming nitric acid (RFNA), select 30m for use
3High-purity aluminium pot is as the original fluid container of red fuming nitric acid (RFNA).
(2) unload acid and measuring tank supply pump 2
Select CQB65-50-150F fluorine alloy magnetic drive pump for use, flow 20m
3/ h, pipeline adopts aluminum pipe, and elbow directly bends with aluminum pipe, and pump discharge is equipped with the two-way pipeline, and one the tunnel plays circulation, and one the tunnel enters measuring tank.Enter a DN50 UPVC electrical ball valve 3 is installed on the pipeline of measuring tank.
(3) measuring tank 4
Adopt 1m
3PE white diaphanometer measuring tank is equipped with liquid level control in the measuring tank, when the stoste that enters measuring tank reached the liquid level of setting, the DN50 PVC electrical ball valve 3 that is installed in before the measuring tank was closed, and prevents that nitric acid liquid from overflowing measuring tank.The protection of measuring tank external reinforcing.
(4) the thinning tank supply pump 5
Select CQB40-40-125F fluorine alloy magnetic drive pump for use, flow 6.5m
3/ h, pipeline adopts aluminum pipe, and elbow directly bends with aluminum pipe, and pump discharge is equipped with the two-way pipeline, and one the tunnel plays circulation, and one the tunnel enters thinning tank.Enter a DN40 UPVC electrical ball valve 6 is installed on the pipeline of thinning tank.
(5) the nitric acid thinning tank 7
Adopt the SUS316L material, volume 10m
3, tank body offers inlet, liquid outlet, leakage fluid dram, loop head, pure water inlet, compressed air inlet, exhaust outlet, temperature-measuring port, the first liquid level mouth, the second liquid level mouth, evacuation port and standby mouth, totally 12 flange ports.Inlet connects with pipeline, directly insert tank base, the feed tube bottom has isocon, and the isocon downside has several equally distributed apertures, make to be unlikely to the excessive tank body that directly impacts of pressure when adding nitric acid, can make nitric acid be distributed in the thinning tank uniformly simultaneously; The compressed air inlet has isocon, so that gas stirs; Temperature-measuring port dress PT100 temp probe, liquid level mouth dress liquid level magnet ring switch.In tank body, add a certain amount of pure water earlier during dilution, 8 dozens of circulations of ON cycle pump then, open electrical ball valve 6 at last again and add nitric acid gradually, open the air compressor machine air valve simultaneously and carry out the gas stirring, nitric acid and water are mixed, and the heat that reaction discharges carries out exchange heat by heat exchanger 9.Tail gas then absorbs by the tail gas tourie.Temperature and fluid level control device are installed in the thinning tank, and electrical ball valve 6 is closed automatically when 38 ℃ of jar Nei Wenduda, and pump 5 is out of service.When temperature in the jar was reduced to 30 ℃, electrical ball valve 6 was opened, and feed flow is carried out in pump 5 entrys into service.Electrical ball valve 6 and pump 5 are all closed automatically when liquid level reaches setting height, thereby guarantee the safety of dilution.Pure water inlet has isocon, so that dilute when unusual water inlet evenly.
(6) thinning tank circulation and supply pump 8
Select CQB65-50-150F fluorine alloy magnetic drive pump for use, flow 20m
3/ h, pipeline adopt the UPVC pipe, and this pump mainly plays two effects, and the one, platform pump pump rare nitric acid storage tank extremely thus when the red fuming nitric acid (RFNA) when 98% is diluted to 40%.The 2nd, the liquid in the thinning tank can fully be circulated.
(7) heat-exchangers of the plate type 9
Select 500m for use
2The 316L heat-exchangers of the plate type, the heat exchanger effectiveness height of heat-exchangers of the plate type, the heat that is discharged during dilution rely on heat exchanger to carry out exchange heat, make to keep certain safe temperature in the thinning tank.
(8) device for absorbing tail gas 10
Adopt 2m
3The PE jar mainly is to carry out tail gas by pure water to absorb as the tail gas tourie, and when thinning tank diluted, the tail gas of generation entered the tail gas tourie through piping, and tank deck is equipped with the pure water spray, and tail gas can fully be dissolved in the pure water.Spray equipment can absorb the tail gas more than 98%, and the tail gas tourie also is equipped with automatic pH probe, surveys acidity and reaches when setting value, starting control tail gas absorbent recirculation pump dnockout.
(9) the tail gas absorbent recirculation pump 11
Select CQB40-40-125F fluorine alloy magnetic drive pump for use, flow 6.5m
3/ h, pipeline adopt the UPVC pipe, and pump can be played circulation, and when tail gas absorbed to finite concentration, when the pH probe detection acidity of tail gas tourie reached setting value, pump was conducted to the dosing district to liquid and carries out dosing or be fed in the thinning tank again allocating thus.
(10) rare nitric acid storage tank 12
Select the storage tank of SUS304 material for use, volume is 40m
3, be used to store 40% rare nitric acid after the dilution.
(11) control section
System adopts the PLC Programmable Logic Controller, is made up of frequency converter, PT100 temp probe, temp controlled meter, liquid level magnet ring switch, switching mode motor-driven valve, shift knob etc.
Claims (2)
1. nitric acid air mix facilities, it is characterized in that, the red fuming nitric acid (RFNA) storage tank of this device is connected to by valve pipe and unloads sour inlet tube and measuring tank supply pump, connect measuring tank through electrical ball valve, enter the nitric acid thinning tank through the thinning tank supply pump by electrical ball valve control, the nitric acid thinning tank connects thinning tank circulation and supply pump by pipeline valve, and this installs by the PLC Controlled by Programmable Controller.
2. nitric acid air mix facilities according to claim 1, it is characterized in that, described nitric acid thinning tank is provided with inlet, liquid outlet, leakage fluid dram, loop head, pure water inlet, compressed air inlet, exhaust outlet, temperature-measuring port, the first liquid level mouth, the second liquid level mouth, evacuation port, standby mouth, described inlet connects directly insertion tank base with pipeline, the feed tube bottom is provided with isocon, the isocon downside is provided with several equally distributed apertures, and temperature and fluid level control device are installed in the thinning tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206303166U CN201930762U (en) | 2010-11-29 | 2010-11-29 | Nitric acid diluting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206303166U CN201930762U (en) | 2010-11-29 | 2010-11-29 | Nitric acid diluting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201930762U true CN201930762U (en) | 2011-08-17 |
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ID=44442302
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206303166U Expired - Lifetime CN201930762U (en) | 2010-11-29 | 2010-11-29 | Nitric acid diluting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201930762U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103203191A (en) * | 2012-01-13 | 2013-07-17 | 昆山允升吉光电科技有限公司 | Automatic dispensing device |
| CN104330530A (en) * | 2014-10-29 | 2015-02-04 | 核工业北京化工冶金研究院 | Dissolved oxygen (DO) testing device and DO testing method |
| CN105148813A (en) * | 2015-07-29 | 2015-12-16 | 阳煤集团太原化工新材料有限公司 | Continuous internal circulation type dilution device and dilution method for concentrated nitric acid |
| CN107349812A (en) * | 2017-08-10 | 2017-11-17 | 贵州川恒化工股份有限公司 | Acid dilution method and diluter for acid liquor |
| CN109126590A (en) * | 2018-08-21 | 2019-01-04 | 中国舰船研究设计中心 | A kind of dense medical fluid on-line dilution device based on injector |
-
2010
- 2010-11-29 CN CN2010206303166U patent/CN201930762U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103203191A (en) * | 2012-01-13 | 2013-07-17 | 昆山允升吉光电科技有限公司 | Automatic dispensing device |
| CN104330530A (en) * | 2014-10-29 | 2015-02-04 | 核工业北京化工冶金研究院 | Dissolved oxygen (DO) testing device and DO testing method |
| CN104330530B (en) * | 2014-10-29 | 2016-05-18 | 核工业北京化工冶金研究院 | A kind of DO determination device and assay method |
| CN105148813A (en) * | 2015-07-29 | 2015-12-16 | 阳煤集团太原化工新材料有限公司 | Continuous internal circulation type dilution device and dilution method for concentrated nitric acid |
| CN107349812A (en) * | 2017-08-10 | 2017-11-17 | 贵州川恒化工股份有限公司 | Acid dilution method and diluter for acid liquor |
| CN109126590A (en) * | 2018-08-21 | 2019-01-04 | 中国舰船研究设计中心 | A kind of dense medical fluid on-line dilution device based on injector |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110817 |