CN208032236U - A kind of system for ammonia in absorbing ammonia nitrogen mixed gas - Google Patents
A kind of system for ammonia in absorbing ammonia nitrogen mixed gas Download PDFInfo
- Publication number
- CN208032236U CN208032236U CN201820044470.1U CN201820044470U CN208032236U CN 208032236 U CN208032236 U CN 208032236U CN 201820044470 U CN201820044470 U CN 201820044470U CN 208032236 U CN208032236 U CN 208032236U
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- ammonia
- mixed gas
- absorption tower
- tourie
- ammonia nitrogen
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Abstract
The utility model discloses a kind of systems for ammonia in absorbing ammonia nitrogen mixed gas,It includes tourie,Absorption tower and liquid collecting tank,Ammonia absorbing liquid is housed in tourie,Tourie is equipped with the ammonia nitrogen combi inlet port being connect with tank car ammonia nitrogen mixed gas pipeline and the remaining mixed gas outlet being connect with absorption tower,The absorption pot bottom is equipped with ammonium hydroxide discharge line,Spray thrower is equipped in absorption tower from top to bottom,Packing layer,Hydrops area,The inlet of spray thrower is connect with out-of-bounds desalted water pipeline,Absorption tower is equipped with the remaining combi inlet port being connected to remaining mixed gas outlet by admission line,Remaining combi inlet port is between packing layer and hydrops area,It is located above spray thrower at the top of absorption tower and is equipped with clean gas outlet,It is connected with the Drainage pipe being passed into liquid collecting tank in the hydrops area on absorption tower,The liquid collecting tank is equipped with the recovered liquid circulating line being passed into tourie.
Description
Technical field
A kind of system for ammonia in absorbing ammonia nitrogen mixed gas of the utility model, and in particular to a kind of liquefied ammonia tank vehicle is unloaded
The processing system and method for tail gas, belong to environmental technology field.
Background technology
In chemical plant or raw material pharmaceutical factory, liquefied ammonia is often used, liquefied ammonia is generally transported with tank car, is unloaded toward storage tank reaching plant area
During vehicle, part liquefied ammonia pressure release direct emission not only pollutes environment, endangers human health, can also cause resource in air
Waste, therefore, under the overall background that current environmental requirement is increasingly stringenter, environmental protection, efficiently, the research of economic ammonia-removal method
With important practical significance.Currently, the processing method one of existing tank car unloading tail gas different according to tank car transported material property
As include cryogenic condensation, absorption, UF membrane, circulation of tail gas reflux etc. technologies.Notification number is the Chinese patent of CN101899319A
A kind of unloading tail gas-naphtha condensation recycling method and device are disclosed, by tail gas of vacuum gas pump and percent by volume 60% ~ 80%
Ethylene glycol solution recycles after exchanging heat within the condenser, eliminates safe and environment-friendly hidden danger, and naphtha lime set is recycled utilization.It is public
It accuses number Chinese patent for being CN202915041U and discloses a kind of liquefied ammonia tank vehicle unloading unit of safety and environmental protection, unloaded in existing liquefied ammonia
One section of pipeloop is increased on vehicle device, liquefied ammonia unloading tail gas is recycled, and to reduce environmental pollution, improves life
Produce processing safety.But the device increases only one section of pipeloop, there is a problem of that ammonia recovery is relatively low.Notification number is
The Chinese patent of CN205914008U discloses a kind of ammonia-containing gas absorption system, and the system is first using the purification equipped with lye
Device removes the sodium sulfocyanate and vapor contained in gas, uses falling film type ammonia absorption plant to absorb ammonia later, passes through coil pipe
Formula condenser reduce absorbing liquid temperature, it can be achieved that ammonia effective absorption.
These inorganic acids or organic acid absorption process of the prior art can improve ammonia recovery, but generally existing absorbent
The problems such as regeneration is difficult, ammonium salt product added value is low.Other common methods such as low temperature recycling, membrane separating method etc., there are steps
The shortcomings of cumbersome, separation material consumption is greatly, ammonia recovery is relatively low.
Utility model content
The purpose of this utility model is to provide a kind of systems for ammonia in absorbing ammonia nitrogen mixed gas, have flow letter
List, ammonia absorptivity height, clean environment firendly, it is applied widely the advantages that.
The utility model adopts the following technical solution：A kind of system for ammonia in absorbing ammonia nitrogen mixed gas, including inhale
Closed cans, absorption tower and liquid collecting tank, tourie is interior to be equipped with ammonia absorbing liquid, and tourie is equipped with and tank car ammonia nitrogen mixed gas pipeline connects
The ammonia nitrogen combi inlet port connect and the remaining mixed gas outlet being connect with absorption tower, the absorption pot bottom are equipped with ammonium hydroxide discharge pipe
Road, spray thrower, packing layer, hydrops area are equipped in absorption tower from top to bottom, and the inlet of spray thrower connects with out-of-bounds desalted water pipeline
Connect, absorption tower is equipped with through admission line and the remaining combi inlet port that is connected to of remnants mixed gas outlets, remaining gaseous mixture into
Mouth, which is located between packing layer and hydrops area, at the top of absorption tower above spray thrower, is equipped with clean gas outlet, the hydrops on absorption tower
The Drainage pipe being passed into liquid collecting tank is connected in area, the liquid collecting tank is equipped with the recovered liquid cycle being passed into tourie
Pipeline.
The tourie includes tank body and the packing cavity being connected to tank interior is arranged above tank body, is equipped in packing cavity
Filler, ammonia absorbing liquid are located in tank body, and the ammonia nitrogen combi inlet port is arranged on tank body, and the remnants mixed gas outlets are set
It sets at the top of packing cavity, the recovered liquid circulating line is passed into the position between packing cavity filler and remaining mixed gas outlet.
The gas return conduit being passed between absorption tower liquid collecting zone and packing layer is additionally provided on the liquid collecting tank, gas returns
Flow tube road is connected to the position that the position on absorption tower is connected to higher than Drainage pipe on absorption tower.
The gas return conduit and Drainage pipe are both connected to the top of liquid collecting tank.
It is equipped with delivery pump on the recovered liquid circulating line and ammonium hydroxide discharge line.
Delivery pump is two delivery pumps being arranged in parallel on the recovered liquid circulating line and ammonium hydroxide discharge line, wherein
One conveying pump work, another it is spare.
Coiled tube condenser is equipped on the tourie and liquid collecting tank, the cooling medium in coiled tube condenser is cycle
Cooling water.
The utility model has the beneficial effects that：The utility model is that the ammonia nitrogen gaseous mixture from tank car is passed through tourie,
Initial absorption is completed by solution in tank, gaseous mixture enters from absorb the bottom of the tower later, and packing layer and top is de- on absorption tower
Brine counter current contacting completes absorption cleaning, and the gaseous mixture ammonia density after absorption cleaning is in 1.5mg/m3Hereinafter, reaching environment protection emission
Standard is discharged into out-of-bounds by clean gas outlet；Absorb the bottom of the tower liquid storage enters liquid collecting tank by Drainage pipe, liquid in liquid collecting tank
It is passed into tourie by recovered liquid circulating line, solution is sent by ammonium hydroxide discharge line to out-of-bounds in tourie.From slot
The ammonia nitrogen gaseous mixture of vehicle need not be pre-processed, and have simple flow, ammonia absorptivity height, clean environment firendly, applied widely etc.
Advantage.
Further, packing section is set on tourie top, as much as possible to absorb ammonia in tourie.
Further, gas backstreaming in liquid collecting tank to absorb the bottom of the tower is prevented by liquid collecting tank pressure by gas return conduit
Power is excessive, moreover it is possible to further be purified to gas.
Further, solution in tourie and absorption tower is absorbed by coiled tube condenser and absorbs the heat that ammonia generates, tool
Have the advantages that simple in structure, easy to use.
Description of the drawings
Fig. 1 is a kind of structural schematic diagram of embodiment of the utility model.
In figure：1- touries, 11- ammonia nitrogen combi inlet ports, 12- remnants' mixed gas outlet, 1a- tank bodies, 1b- packing cavities,
The absorption towers 2-, 21- spray throwers, 22- packing layers, 23- hydrops area, 24- remnants' combi inlet port, 25- clean gas outlets, 3- liquid collectings
Tank, 4- tank car ammonia nitrogen mixed gas pipelines, 5- ammonium hydroxide discharge lines, out-of-bounds desalted water pipeline, 7- Drainage pipes, 8- recovered liquids follow 6-
Endless tube road, 9- gas return conduits, 10- coiled tube condensers.
Specific implementation mode
The utility model is described in detail in the following with reference to the drawings and specific embodiments.
The utility model be used for absorbing ammonia nitrogen mixed gas in ammonia system a kind of specific embodiment as shown in Figure 1, its
Including tourie 1, absorption tower 2 and liquid collecting tank 3, ammonia absorbing liquid is housed in tourie 1, tourie 1 is equipped with and tank car ammonia nitrogen
The ammonia nitrogen combi inlet port 11 that mixed gas pipeline 4 connects and the remaining mixed gas outlet 12 being connect with absorption tower 2, the tourie
1 bottom is equipped with ammonium hydroxide discharge line 5, and spray thrower 21, packing layer 22, hydrops area 23, spray thrower are equipped with from top to bottom in absorption tower 2
21 inlet is connect with out-of-bounds desalted water pipeline 6, and absorption tower 2 is equipped with to be connected by admission line and remaining mixed gas outlet 12
Logical remaining combi inlet port 24, remaining combi inlet port 24 is between packing layer 22 and hydrops area 23,1 top position of absorption tower
It is equipped with clean gas outlet 25 above spray thrower 21, the drain being passed into liquid collecting tank 3 is connected in the hydrops area 23 on absorption tower
Pipeline 7, the liquid collecting tank 3 are equipped with the recovered liquid circulating line 8 being passed into tourie 1.The tourie 1 includes tank body 1a
With the packing cavity 1b being connected to tank interior above tank body 1a is set, filler is equipped in packing cavity 1b, ammonia absorbing liquid is located at
In tank body 1a, the ammonia nitrogen combi inlet port 11 is arranged on tank body 1a, and the remnants mixed gas outlets 12 are arranged in packing cavity
At the top of 1b, the recovered liquid circulating line 8 is passed into the position between packing cavity 1b fillers and remaining mixed gas outlet 12.It is described
The gas return conduit 9 being passed between absorption tower liquid collecting zone 23 and packing area 22, gas return conduit are additionally provided on liquid collecting tank 3
9 positions being connected on absorption tower 2 are connected to the position on absorption tower, the gas return conduit 9 and row higher than Drainage pipe 7
Liquid pipe road 7 is both connected to the top of liquid collecting tank 3.It is equipped with conveying on the recovered liquid circulating line 8 and ammonium hydroxide discharge line 5
It pumps, delivery pump is two delivery pumps being arranged in parallel on the recovered liquid circulating line 8 and ammonium hydroxide discharge line 5, wherein one
Platform convey pump work, another it is spare.Coiled tube condenser 10, coiled condensation are equipped on the tourie 1 and liquid collecting tank 3
Cooling medium in device 10 is recirculated cooling water.
The operational process of the system of the present embodiment is：Ammonia nitrogen gaseous mixture from tank car is introduced into tourie, is passed through successively
Solution, packing cavity top filler complete primary absorb in tank body；Gaseous mixture enters from absorb the bottom of the tower later, with absorption tower top
Desalted water charging completes double absorption in packing section counter current contacting；Gaseous mixture ammonia density after double absorption is in 1.5mg/m3With
Under, reach environmental emission standard, is discharged by clean gas outlet；Absorb the bottom of the tower goes out liquid and enters liquid collecting tank, and gas returns in liquid collecting tank
It is flow to absorb the bottom of the tower, liquid collecting tank is equipped with liquid level gauge, and under liquid level gauge control, liquid is by recovered liquid circulating line in liquid collecting tank
It is pumped to tourie packing cavity top with conveying；Solution is emitted into out-of-bounds by ammonium hydroxide discharge line and delivery pump in tourie.
The utility model increases by one section of packing material absorbing section on tourie top, with as much as possible by ammonia in tourie
It absorbs.The heat that solvent absorption ammonia generates is absorbed by coiled tube condenser by recirculated cooling water.It is wanted to reach environment protection emission
It asks, the gaseous mixture exported from tourie needs further to absorb through absorption tower.Ammonia nitrogen gaseous mixture from tank car need not carry out pre-
Processing, have many advantages, such as flow simply, it is ammonia absorptivity height, clean environment firendly, applied widely.
Concrete application example is as follows：
Example 1：Unloading tail gas 200m from liquefied ammonia tank vehicle3/ h, temperature are 20 DEG C, pressure 101.325kPa, quality
Group becomes NH3：15%, N2：85%, gas phase enters the packing section that tourie upper height is 500mm, with 30 DEG C from liquid collecting tank
Solution counter current contacting, obtain NH3It is the absorption tower of 2000mm into packed height after quality group is as 1.3% gaseous mixture,
It is 30 DEG C with temperature, flow 1.7m3The desalted water counter current contacting of/h, it is 159m to obtain flow3/ h, NH3A concentration of 1.21mg/
m3Gaseous mixture be discharged into air, while obtaining ammonia quality group and become 0.1% liquid phase, liquid phase is pumped to tourie packing section top；
Tourie liquidus temperature is 33 DEG C, flow rate 1.78m3/ h, ammonia quality group become 1.8%, are pumped to out-of-bounds by delivery pump；It adopts
Solution is removed with recirculated cooling water and absorbs the heat that ammonia generates, and tourie temperature is made to remain 33 DEG C.
Example 2：Unloading tail gas 200m from liquefied ammonia tank vehicle3/ h, temperature are 20 DEG C, pressure 101.325kPa, quality
Group becomes NH3：50%, N2：50%, gas phase enters the packing section that tourie upper height is 500mm, with 30 DEG C from liquid collecting tank
Solution counter current contacting, obtain NH3It is the absorption tower of 2000mm into packed height after quality group is as 9.2% gaseous mixture,
It is 30 DEG C with temperature, flow 1.45m3The desalted water counter current contacting of/h, it is 77.57m to obtain flow3/ h, NH3It is a concentration of
1.46mg/m3Gaseous mixture be discharged into air, while obtain ammonia quality group become 0.6% liquid phase, liquid phase is through circulating cooling water cooling
To after 33 DEG C, it is pumped to tourie packing section top；Tourie liquidus temperature is 33 DEG C, flow rate 1.64m3/ h, ammonia quality group
As 5.7%, it is pumped to out-of-bounds by delivery pump；Solution is removed using recirculated cooling water and absorbs the heat that ammonia generates, makes absorption
Tank sum aggregate liquid tank temperature remains 33 DEG C.
Example 3：Unloading tail gas 200m from liquefied ammonia tank vehicle3/ h, temperature are 20 DEG C, pressure 101.325kPa, quality
Group becomes NH3：85%, N2：15%, gas phase enters the packing section that tourie upper height is 500mm, with 30 DEG C from liquid collecting tank
Solution counter current contacting, obtain NH3It is the absorption tower of 2000mm into packed height after quality group is as 40.1% gaseous mixture,
It is 30 DEG C with temperature, flow 1.1m3The desalted water counter current contacting of/h, it is 19.88m to obtain flow3/ h, NH3It is a concentration of
0.08mg/m3Gaseous mixture be discharged into air, while obtain ammonia quality group become 1.7% liquid phase, liquid phase is through circulating cooling water cooling
To after 33 DEG C, it is pumped to tourie packing section top；Tourie liquidus temperature is 33 DEG C, flow rate 1.37m3/ h, ammonia quality group
As 10.4%, it is pumped to out-of-bounds by delivery pump；Solution is removed using recirculated cooling water and absorbs the heat that ammonia generates, makes suction
Closed cans sum aggregate liquid tank temperature remains 33 DEG C.
Embodiment described above is only that preferred embodiments of the present invention are described, not to this practicality
Novel conception and scope is defined, under the premise of not departing from the utility model design conception, ordinary skill skill in this field
The all variations and modifications that art personnel make the technical solution of the utility model should all fall into the protection model of the utility model
It encloses, the claimed technology contents of the utility model have all been recorded in detail in the claims.
Claims (7)
1. a kind of system for ammonia in absorbing ammonia nitrogen mixed gas, it is characterised in that：It includes tourie（1）, absorption tower（2）
And liquid collecting tank（3）, tourie（1）It is interior that ammonia absorbing liquid, tourie are housed（1）It is equipped with and tank car ammonia nitrogen mixed gas pipeline（4）
The ammonia nitrogen combi inlet port of connection（11）With with absorption tower（2）The remaining mixed gas outlet of connection（12）, the tourie（1）Bottom
Portion is equipped with ammonium hydroxide discharge line（5）, absorption tower（2）It is inside equipped with spray thrower from top to bottom（21）, packing layer（22）, hydrops area
（23）, spray thrower（21）Inlet and out-of-bounds desalted water pipeline（6）Connection, absorption tower（2）Be equipped with by admission line with
Remaining mixed gas outlet（12）The remaining combi inlet port of connection（24）, remaining combi inlet port（24）Positioned at packing layer（22）With
Hydrops area（23）Between, absorption tower（2）Top is located at spray thrower（21）Top is equipped with clean gas outlet（25）, absorption tower（2）'s
Hydrops area（23）On be connected with and be passed into liquid collecting tank（3）Interior Drainage pipe（7）, the liquid collecting tank（3）It is equipped with and is passed into suction
Closed cans（1）Interior recovered liquid circulating line（8）.
2. the system according to claim 1 for ammonia in absorbing ammonia nitrogen mixed gas, it is characterised in that：The tourie
（1）Including tank body（1a）With setting in tank body（1a）The packing cavity that top is connected to tank interior（1b）, packing cavity（1b）Inside set
There are filler, ammonia absorbing liquid to be located at tank body（1a）It is interior, the ammonia nitrogen combi inlet port（11）It is arranged in tank body（1a）On, it is described residual
Remaining mixed gas outlet（12）It is arranged in packing cavity（1b）Top, the recovered liquid circulating line（8）It is passed into packing cavity（1b）It fills out
Material and remaining mixed gas outlet（12）Between position.
3. the system according to claim 1 for ammonia in absorbing ammonia nitrogen mixed gas, it is characterised in that：The liquid collecting tank
（3）On be additionally provided with and be passed into absorption tower liquid collecting zone（23）And packing layer（22）Between gas return conduit（9）, gas backstreaming pipe
Road（9）The position being connected on absorption tower is higher than Drainage pipe（7）It is connected to the position on absorption tower.
4. the system according to claim 3 for ammonia in absorbing ammonia nitrogen mixed gas, it is characterised in that：The gas returns
Flow tube road（9）And Drainage pipe（7）It is both connected to liquid collecting tank（3）Top.
5. the system according to claim 1 or 2 or 3 or 4 for ammonia in absorbing ammonia nitrogen mixed gas, it is characterised in that：
The recovered liquid circulating line（8）With ammonium hydroxide discharge line（5）On be equipped with delivery pump.
6. the system according to claim 5 for ammonia in absorbing ammonia nitrogen mixed gas, it is characterised in that：The recovered liquid
Circulating line（8）With ammonium hydroxide discharge line（5）Upper delivery pump is two delivery pumps being arranged in parallel, wherein a delivery pump work
Make, another it is spare.
7. the system according to claim 5 for ammonia in absorbing ammonia nitrogen mixed gas, it is characterised in that：The tourie
（1）And liquid collecting tank（3）On be equipped with coiled tube condenser（10）, coiled tube condenser（10）In cooling medium be circulating cooling
Water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820044470.1U CN208032236U (en) | 2018-01-11 | 2018-01-11 | A kind of system for ammonia in absorbing ammonia nitrogen mixed gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820044470.1U CN208032236U (en) | 2018-01-11 | 2018-01-11 | A kind of system for ammonia in absorbing ammonia nitrogen mixed gas |
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| Publication Number | Publication Date |
|---|---|
| CN208032236U true CN208032236U (en) | 2018-11-02 |
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| CN201820044470.1U Active CN208032236U (en) | 2018-01-11 | 2018-01-11 | A kind of system for ammonia in absorbing ammonia nitrogen mixed gas |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109821432A (en) * | 2019-03-20 | 2019-05-31 | 山东恒昌聚材化工科技股份有限公司 | The device of ammonium hydroxide is prepared with liquefied ammonia |
| CN110193270A (en) * | 2019-05-31 | 2019-09-03 | 成都华融化工有限公司 | A kind of polymerizing vinyl chloride tail gas ammonia removal device and method |
-
2018
- 2018-01-11 CN CN201820044470.1U patent/CN208032236U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109821432A (en) * | 2019-03-20 | 2019-05-31 | 山东恒昌聚材化工科技股份有限公司 | The device of ammonium hydroxide is prepared with liquefied ammonia |
| CN110193270A (en) * | 2019-05-31 | 2019-09-03 | 成都华融化工有限公司 | A kind of polymerizing vinyl chloride tail gas ammonia removal device and method |
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