CN209205068U - A kind of environment-friendly type liquefied ammonia dilution system - Google Patents
A kind of environment-friendly type liquefied ammonia dilution system Download PDFInfo
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- CN209205068U CN209205068U CN201821645208.9U CN201821645208U CN209205068U CN 209205068 U CN209205068 U CN 209205068U CN 201821645208 U CN201821645208 U CN 201821645208U CN 209205068 U CN209205068 U CN 209205068U
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- liquefied ammonia
- water
- ammonium hydroxide
- ammonia
- environment
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Abstract
The utility model patent is related to liquefied ammonia production technical field, and in particular to a kind of environment-friendly type liquefied ammonia dilution system.The liquefied ammonia dilution system is including further including cooling tower, circulating water pool, water treatment facilities, tail gas absorber, ammonium hydroxide basin and liquid ammonia storage tank, liquefied ammonia diluter includes the ontology in tower structure, the reaction warehouse for diluting liquefied ammonia is equipped in the middle part of ontology, it is equipped with outside reaction warehouse for cooling plate heat exchanger, ontology middle part is equipped with circulating water outlet pipe, circulating water intake pipe and liquefied ammonia inlet tube；Liquid ammonia storage tank enters liquefied ammonia diluter by ammonium hydroxide outlet, and the soft water of circulating water pool is pumped into liquefied ammonia diluter through soft water inlet tube by softened water pump, and liquefied ammonia and soft water are diluted to certain density ammonium hydroxide in reaction warehouse, and ammonium hydroxide is sent by ammonium hydroxide outlet to ammonium hydroxide basin.The utility model solves the problems, such as ammonia leakage in liquefied ammonia dilution, reduces the pollution to environment, energy conservation and environmental protection.
Description
Technical field
The utility model patent is related to liquefied ammonia production technical field, and in particular to a kind of environment-friendly type liquefied ammonia dilution system.
Background technique
Liquefied ammonia is important the raw material of industry, is widely used in pharmacy, oil refining, synthetic fibers, synthetic resin, freezing, metallurgy
Etc..In industrial production be usually by liquefied ammonia be dissolved in water be made into industrial ammonia come using.Traditional ammonium hydroxide preparation facilities
Structure type is: be placed in the bottom of ammonium hydroxide configuration groove body using the Stainless Steel Coil for offering fluid hole, liquefied ammonia by ammonia pump and
Valve control slowly enters in the groove body for filling water, and liquefied ammonia is slowly dissolved in water and is formed Dilute Ammonia Solution.Existing ammonium hydroxide
Preparation facilities haves the defects that the following aspects: liquefied ammonia can generate a large amount of ammonia in dilution, if do not taken suitable
When measure controlled, will be so that a large amount of ammonia escapes into atmosphere.For the escape for reducing ammonia in liquefied ammonia dilution, various dresses
It sets and facility is all being developed, due in existing design and structure, sealing effect is not satisfactory, and liquefied ammonia diluted at this stage
Part ammonia leakage is always generated in journey, is polluted the environment.
Utility model content
In view of the shortcomings of the prior art, the utility model provides a kind of environment-friendly type liquefied ammonia dilution systems, and it is dilute to solve liquefied ammonia
During releasing the problem of ammonia leakage, reduce the pollution to environment.
The technical solution of the utility model is achieved in that including liquefied ammonia diluter, which is characterized in that further includes cooling
Tower, circulating water pool, water treatment facilities, tail gas absorber, ammonium hydroxide basin and liquid ammonia storage tank, the liquefied ammonia diluter include in tower
The ontology of structure, the ontology middle part are equipped with the reaction warehouse for diluting liquefied ammonia, are equipped with outside the reaction warehouse for cooling
Plate heat exchanger, its bottom of the ontology are equipped with soft water inlet tube, and top is equipped with ammonium hydroxide outlet, is equipped in the middle part of the ontology
Circulating water outlet pipe, circulating water intake pipe and liquefied ammonia inlet tube；The liquid ammonia storage tank enters liquefied ammonia dilution by ammonium hydroxide outlet
The soft water of device, circulating water pool is pumped into liquefied ammonia diluter through soft water inlet tube by softened water pump, and liquefied ammonia and soft water dilute in reaction warehouse
At certain density ammonium hydroxide, ammonium hydroxide is sent by ammonium hydroxide outlet to ammonium hydroxide basin；The ammonium hydroxide basin passes through the useless of upper part
Air pipe is connected to tail gas absorber, and the plate heat exchanger send recirculated water to cooling tower cooler by circulating water outlet pipe,
The cooling water of circulating water pool enters plate heat exchanger through circulating water intake tube pump by water circulating pump；The circulating water pool is connected with described
Cooling tower and raw water is softened into the water treatment facilities for soft water.
Distributor is additionally provided on the liquefied ammonia inlet tube, the distributor is equipped with multiple spray heads.
Preferably, the liquefied ammonia inlet tube is equipped with liquefied ammonia flowmeter and controls the liquefied ammonia flow control valve of liquefied ammonia flow；
The soft water inlet pipes are equipped with the soft water flux regulating valve for adjusting soft water flux.
Preferably, liquid level sensor is equipped in the reaction warehouse, the environment-friendly type liquefied ammonia dilution system further includes PLC control
System, the PLC control system respectively with liquid level sensor, liquefied ammonia flow control valve, soft water flux regulating valve, softened water pump and follow
The electrical connection of ring water pump.
Preferably, the hardness of the soft water is lower than 0.03mmol/L.
The utility model solves defect present in background technique, has the advantages that
The utility model provides a kind of environment-friendly type liquefied ammonia dilution system of reliable performance, solves in liquefied ammonia dilution
The problem of ammonia leakage, reduces the pollution to environment.The utility model will obtain ammonium hydroxide and pass through ammonium hydroxide outlet in liquid ammonia storage tank
Into liquefied ammonia diluter 1, the soft water of circulating water pool is pumped into liquefied ammonia diluter through soft water inlet tube by softened water pump, and liquefied ammonia and soft water exist
It is diluted to certain density ammonium hydroxide in reaction warehouse, while passing through the cooling water circulating cooling of plate heat exchanger, reduces reaction warehouse
Reaction temperature reduces detonation phenomenon and occurs, and improves the diluted efficiency of liquefied ammonia.By in reaction warehouse be arranged distributor and
Spray head is sprayed by the dispersibility of distributor and by liquefied ammonia, increases diluted contact area, so that liquefied ammonia and dilution
Water is sufficiently mixed, and improves the stabilization of liquefied ammonia diluted speed and concentration.Furthermore do not have absorbed not coagulate in dilution
Gas ammonia is entered in tail gas absorber by the exhaust pipe of ammonium hydroxide tank top, fully absorbs place by the water in tail gas absorber
Reason, to achieve the purpose that ammonia does not leak, reduction pollutes the environment ammonia exhaust emissions, has preferable energy conservation and environmental protection
Performance.
Detailed description of the invention
Fig. 1 is the principles of the present invention schematic diagram；
Fig. 2 is the structural schematic diagram of liquefied ammonia diluter in Fig. 1
In figure: 1- liquefied ammonia diluter, 2- cooling tower, 3- circulating water pool, 4- water treatment facilities, 5- tail gas absorber, 6- ammonia
Water basin, 7- liquid ammonia storage tank, 8- softened water pump, 9- water circulating pump, 11- ontology, 12- plate heat exchanger, 13- circulating water outlet pipe,
14- circulating water intake pipe, 15- soft water inlet tube, 16- ammonium hydroxide outlet, 17- liquefied ammonia inlet tube, 18- reaction warehouse, 19- distribution
Device, 20- spray head.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without creative efforts
Every other embodiment obtained, fall within the protection scope of the utility model.
Environment-friendly type liquefied ammonia dilution system as depicted in figs. 1 and 2, including liquefied ammonia diluter 1, cooling tower 2, circulating water pool 3,
Water treatment facilities 4, tail gas absorber 5, ammonium hydroxide basin 6 and liquid ammonia storage tank 7, liquefied ammonia diluter 1 include the ontology in tower structure
11, it is equipped with the reaction warehouse 18 for diluting liquefied ammonia in the middle part of ontology 11, is equipped with outside reaction warehouse 18 for cooling plate heat exchanger
12, its bottom of ontology 11 is equipped with soft water inlet tube 15, and top is equipped with ammonium hydroxide outlet 16, goes out in the middle part of ontology 11 equipped with recirculated water
Mouth pipe 13, circulating water intake pipe 14 and liquefied ammonia inlet tube 17；Liquid ammonia storage tank 7 enters liquefied ammonia diluter 1 by ammonium hydroxide outlet 16,
The soft water of circulating water pool 3 is pumped into liquefied ammonia diluter 1, liquefied ammonia and soft water in reaction warehouse 18 through soft water inlet tube 15 by softened water pump 8
It is diluted to certain density ammonium hydroxide, ammonium hydroxide is sent by ammonium hydroxide outlet 16 to ammonium hydroxide basin 6；Ammonium hydroxide basin 6 passes through upper part
Exhaust pipe be connected to tail gas absorber 5, plate heat exchanger 12 send recirculated water to cooling tower 2 by circulating water outlet pipe 13
Cooling, the cooling water of circulating water pool 3 is pumped into plate heat exchanger 12 through circulating water intake pipe 14 by water circulating pump 9；Circulating water pool 3 connects
It is connected to the cooling tower 2 and raw water is softened into the water treatment facilities 4 for soft water.Distributor is additionally provided on liquefied ammonia inlet tube 17
19, distributor 19 is equipped with multiple spray heads 20.Liquefied ammonia inlet tube 17 is equipped with liquefied ammonia flowmeter and controls the liquid of liquefied ammonia flow
Ammonia flow control valve；The soft water flux regulating valve for adjusting soft water flux is equipped at soft water inlet tube 15.It is set in reaction warehouse 18
Have a liquid level sensor, environment-friendly type liquefied ammonia dilution system further includes PLC control system, PLC control system respectively with liquid level sensor,
Liquefied ammonia flow control valve, soft water flux regulating valve, softened water pump 8 and water circulating pump 9 are electrically connected.
The utility model implementation process is:
A the inlet valve and exhaust valve for) opening liquid ammonia storage tank 7, open softened water pump 8 and water circulating pump 9, make circulating water system
System work；
B 22~26m of soft water confluent of softened water pump 8) is adjusted3/ h, when the liquid level in the reaction warehouse 18 of liquefied ammonia diluter 1 reaches
When to 550~650mm, the liquefied ammonia flow control valve on liquefied ammonia inlet tube 17 is opened, opens flow control valve opening always at it
It is slowly increased in 10% range of degree, the mass percent concentration of ammonium hydroxide is 1~10% in control control liquefied ammonia diluter 1；When
After liquefied ammonia flow stabilizes to 4~6t/h, continue the aperture for being slowly increased liquefied ammonia flow control valve, controls ammonia in liquefied ammonia diluter 1
The mass percent concentration of water is 12~20%；The hardness of soft water is lower than 0.03mmol/L.
C when) constant level in setting reaction warehouse 18 reaches 1450~1550mm, liquid level is passed by PLC control system
Sensor and liquefied ammonia flow control valve link, and control liquefied ammonia flow control valve aperture according to liquid level, keep liquefied ammonia dilution system steady
Fixed output ammonium hydroxide.
D) the fixed gas ammonia in liquefied ammonia enters in tail gas absorber 5 from the exhaust pipe at 6 top of ammonium hydroxide basin, by tail gas
Water absorption processing in absorber 5.
E) when 6 liquid level of ammonium hydroxide basin and 6 tank deck of ammonium hydroxide basin distance are the 1/5~1/6 of 6 height of ammonium hydroxide basin, as
Ammonium hydroxide basin 6 matches ammonia terminal；When the pressure gauge of liquid ammonia storage tank 7 shows that pressure is lower than 0.3MPa, as liquid ammonia storage tank 7 is matched
Ammonia terminal is then shut off softened water pump 8 and water circulating pump 9.
The system of the utility model can quickly produce ammonium hydroxide, and the utility model will obtain ammonium hydroxide and pass through ammonium hydroxide in liquid ammonia storage tank 7
Outlet 16 enters liquefied ammonia diluter 1, and the soft water of circulating water pool 3 is pumped into liquefied ammonia diluter through soft water inlet tube 15 by softened water pump 8
1, liquefied ammonia and soft water are diluted to certain density ammonium hydroxide in reaction warehouse 18, while being recycled by the cooling water of plate heat exchanger 12
It is cooling, the reaction temperature of reaction warehouse 18 is reduced, detonation phenomenon is reduced and occurs, and improve the diluted efficiency of liquefied ammonia.By
Setting distributor 19 and spray head 20, spray by the dispersibility of distributor 19 and by liquefied ammonia, increase in reaction warehouse 18
Diluted contact area improves the stabilization of liquefied ammonia diluted speed and concentration so that liquefied ammonia and dilution water are sufficiently mixed.Furthermore
There is no absorbed fixed gas ammonia to enter tail gas absorber 5 by the exhaust pipe at 6 top of ammonium hydroxide basin in dilution
In, processing is fully absorbed by the water in tail gas absorber 5, to achieve the purpose that ammonia does not leak, is reduced to ammonia exhaust emissions
It pollutes the environment, there is preferable energy-conserving and environment-protective performance.By PLC control system by liquid level sensor and the control of liquefied ammonia flow
Valve linkage processed controls liquefied ammonia flow control valve aperture according to liquid level, and the efficient operation for keeping liquefied ammonia dilution system stable reduces
Labor intensity of operating staff, further increases productivity.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Within the spirit and principle of utility model, any modification, equivalent replacement, improvement and so on should be included in the utility model
Protection scope within.
Claims (5)
1. a kind of environment-friendly type liquefied ammonia dilution system, including liquefied ammonia diluter (1), which is characterized in that further include cooling tower (2), follow
Ring pond (3), water treatment facilities (4), tail gas absorber (5), ammonium hydroxide basin (6) and liquid ammonia storage tank (7), the liquefied ammonia diluter
(1) include the ontology (11) for being in tower structure, the reaction warehouse (18) for diluting liquefied ammonia is equipped in the middle part of the ontology (11), it is described
It is equipped with outside reaction warehouse (18) for cooling plate heat exchanger (12), described its bottom of ontology (11) is equipped with soft water inlet tube
(15), top is equipped with ammonium hydroxide outlet (16), and circulating water outlet pipe (13), circulating water intake are equipped in the middle part of the ontology (11)
Manage (14) and liquefied ammonia inlet tube (17)；The liquid ammonia storage tank (7) enters liquefied ammonia diluter (1) by ammonium hydroxide outlet (16), follows
The soft water in ring pond (3) is pumped into liquefied ammonia diluter (1) by softened water pump (8) through soft water inlet tube (15), and liquefied ammonia and soft water are reacting
Certain density ammonium hydroxide is diluted in storehouse (18), ammonium hydroxide is sent by ammonium hydroxide outlet (16) to ammonium hydroxide basin (6)；The ammonium hydroxide
Basin (6) is connected to by the exhaust pipe of upper part with tail gas absorber (5), and the plate heat exchanger (12) passes through recirculated water
Circulating water outlet pipe (13) send it is cooling to cooling tower (2), the cooling water of circulating water pool (3) by water circulating pump (9) through recirculated water into
Mouth pipe (14) is pumped into plate heat exchanger (12)；The circulating water pool (3) is connected with the cooling tower (2) and by raw water softening
The water treatment facilities (4) of soft water.
2. environment-friendly type liquefied ammonia dilution system according to claim 1, it is characterised in that: on the liquefied ammonia inlet tube (17) also
Equipped with distributor (19), the distributor (19) is equipped with multiple spray heads (20).
3. environment-friendly type liquefied ammonia dilution system according to claim 1 or 2, it is characterised in that: the liquefied ammonia inlet tube (17)
It is equipped with liquefied ammonia flowmeter and controls the liquefied ammonia flow control valve of liquefied ammonia flow；It is equipped at the soft water inlet tube (15) for adjusting
Save the soft water flux regulating valve of soft water flux.
4. environment-friendly type liquefied ammonia dilution system according to claim 3, it is characterised in that: be equipped with liquid in the reaction warehouse (18)
Level sensor, the environment-friendly type liquefied ammonia dilution system further includes PLC control system, and the PLC control system is passed with liquid level respectively
Sensor, liquefied ammonia flow control valve, soft water flux regulating valve, softened water pump (8) and water circulating pump (9) electrical connection.
5. environment-friendly type liquefied ammonia dilution system according to claim 1, it is characterised in that: the hardness of the soft water is lower than
0.03mmol/L。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821645208.9U CN209205068U (en) | 2018-10-11 | 2018-10-11 | A kind of environment-friendly type liquefied ammonia dilution system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821645208.9U CN209205068U (en) | 2018-10-11 | 2018-10-11 | A kind of environment-friendly type liquefied ammonia dilution system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209205068U true CN209205068U (en) | 2019-08-06 |
Family
ID=67455564
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821645208.9U Expired - Fee Related CN209205068U (en) | 2018-10-11 | 2018-10-11 | A kind of environment-friendly type liquefied ammonia dilution system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209205068U (en) |
-
2018
- 2018-10-11 CN CN201821645208.9U patent/CN209205068U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190806 Termination date: 20201011 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |