CN103073026A - Ammonia gas recovery system - Google Patents

Ammonia gas recovery system Download PDF

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Publication number
CN103073026A
CN103073026A CN201310049765XA CN201310049765A CN103073026A CN 103073026 A CN103073026 A CN 103073026A CN 201310049765X A CN201310049765X A CN 201310049765XA CN 201310049765 A CN201310049765 A CN 201310049765A CN 103073026 A CN103073026 A CN 103073026A
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ammonia
pipeline
diaphragm valve
heat exchanger
pneumavalve
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CN201310049765XA
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CN103073026B (en
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周礼誉
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Shanghai Brother Microelectronics Technology Co Ltd
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Individual
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Abstract

The invention discloses an ammonia gas recovery system, which comprises a pretreatment device and an ammonia gas recovery and storage device. The pretreatment device is used for separating solid particles, water vapor and a complex compound from waste gas, and the ammonia gas recovery and storage device is used for liquefying ammonia gas in the waste gas and storing the liquefied ammonia gas. The ammonia gas recovery system provided by the invention can recover the ammonia gas, does not need to treat the ammonia gas again, reduces treatment cost, and avoids the problem of environmental pollution; and the recovered ammonia gas can be recycled.

Description

A kind of Ammonia recovery system
Technical field
The invention belongs to the off gas treatment field, relate in particular to a kind of Ammonia recovery system.
Background technology
Light emitting diode is energy-conservation and characteristic high brightness owing to it, and semiconductor lighting and LCD backlight aspect are widely used again, and the main production technology of blue-ray LED is the GaN epitaxy technology, uses in a large number in process of production NH3, H2 and N2.But the NH3 off gas treatment that contains that production process produces is got up very difficult.
At present main method is to be the water washing method, namely utilizes NH3 characteristic soluble in water that NH3 is water-soluble, but aforesaid method causes a large amount of ammonia-containing waters to need to process, and has caused high processing cost or the i.e. discharging up to standard of being untreated causes environment contaminated.
Summary of the invention
In view of this, the invention provides a kind of Ammonia recovery system, to solve the in the prior art high processing cost of off gas treatment and the problem of environmental pollution.
This Ammonia recovery system comprises:
A kind of Ammonia recovery system comprises:
Pretreatment unit, described pretreatment unit is for separating of the solid particulate in the waste gas, water vapor and complex compound;
The Ammonia recovery storing device, described Ammonia recovery storing device is used for the ammonia of liquefaction waste gas, and storage liquefaction ammonia.
Preferably, described pretreatment unit comprises:
The first tripping device, described the first tripping device is for separating of the solid particulate in the described waste gas;
The second tripping device, described the second tripping device is for separating of the water vapour in the described waste gas and complex compound.
Preferably, described the first tripping device comprises:
The first inlet end, described the first inlet end are the port that described waste gas enters described Ammonia recovery system;
The first strainer, described the first strainer is connected with described the first inlet end by the ammonia pipeline, is used for the solid particulate of the described waste gas of filtering separation;
The first outlet side, described the first outlet side is connected with described the first strainer by the ammonia pipeline;
Wherein, be disposed with the first diaphragm valve, the first pneumavalve and the first tensimeter on the ammonia pipeline between described the first inlet end and the first strainer, be disposed with the second tensimeter, the second pneumavalve and the second diaphragm valve on the ammonia pipeline between described the first strainer and the first outlet side.
Preferably, described the first tripping device also comprises:
The first logical plug gas inlet, the described first logical plug gas inlet is connected with the first strainer by the ammonia pipeline, and is disposed with the 3rd pneumavalve and the second tensimeter on the ammonia pipeline between the described first logical plug gas inlet and described the first strainer;
The first logical plug pneumatic outlet, the described first logical plug pneumatic outlet is connected with the first strainer by the ammonia pipeline, and is disposed with the 4th pneumavalve and the first tensimeter on the ammonia pipeline between the described first logical plug pneumatic outlet and described the first strainer.
Preferably, described the first tripping device also comprises:
The second strainer, described the second strainer is connected with described the first inlet end by the ammonia pipeline, and is connected with described the first outlet side by the ammonia pipeline;
Wherein, be disposed with the first diaphragm valve, the 5th pneumavalve and the 3rd tensimeter on the ammonia pipeline between described the first inlet end and the second strainer, be disposed with the 4th tensimeter, the 6th pneumavalve and the 3rd diaphragm valve on the ammonia pipeline between described the second strainer and the first outlet side.
Preferably, described the second strainer is connected with the described first logical plug gas inlet by the ammonia pipeline, and is disposed with the 4th tensimeter and the 7th pneumavalve on the ammonia pipeline between described the second strainer and the described first logical plug gas inlet;
Described the second strainer is connected with the described first logical plug pneumatic outlet by the ammonia pipeline, and is disposed with the 3rd tensimeter and the 8th pneumavalve on the ammonia pipeline between described the second strainer and the described first logical plug pneumatic outlet.
Preferably, described the second tripping device comprises:
The second inlet end, described the second inlet end is connected with described the first outlet side;
The first heat exchanger, described the first heat exchanger is connected with described the second inlet end by the ammonia pipeline, be used for water vapour and the complex compound of the described waste gas of refrigerated separation, and be disposed with the 4th diaphragm valve, the 9th pneumavalve and the first pressure switch on the ammonia pipeline between described the second inlet end and the first heat exchanger;
The second outlet side, described the second outlet side is connected with described the first heat exchanger by the ammonia pipeline, and be disposed with the second pressure switch on the ammonia pipeline between described the first heat exchanger and the second outlet side, the first temperature indicative control unit, the 5th diaphragm valve, the tenth pneumavalve and the 6th diaphragm valve;
The first cooling gas inlet, described the first cooling gas inlet is connected with described the first heat exchanger by the ammonia pipeline, and is provided with the 11 pneumavalve on the ammonia pipeline between described the first cooling gas inlet and described the first heat exchanger;
The outlet of the first cooling gas, described the first cooling gas outlet is connected with described the first heat exchanger by the ammonia pipeline, and is provided with the 12 pneumavalve on the ammonia pipeline between the outlet of described the first cooling gas and described the first heat exchanger;
The first holding tank, be provided with the 3rd pressure switch on described the first holding tank, and described the first holding tank is connected with described First Heat Exchanger and the second outlet side respectively by the ammonia pipeline, be disposed with the 7th diaphragm valve, the 13 pneumavalve, the first temperature indicative control unit and the second pressure switch on the ammonia pipeline between described the first holding tank and described the first heat exchanger, be disposed with the 8th diaphragm valve, the 14 pneumavalve, the tenth pneumavalve and the 6th diaphragm valve on the ammonia pipeline between described the first holding tank and described the second outlet side.
Preferably, described the second tripping device also comprises:
The second logical plug gas inlet, the described second logical plug gas inlet is connected with described the first heat exchanger by the ammonia pipeline, and is disposed with the 9th diaphragm valve, the 5th diaphragm valve, the first temperature indicative control unit and the second pressure switch on the ammonia pipeline between the described second logical plug gas inlet and the first heat exchanger;
The first washer, described the first washer is connected with described the first heat exchanger by the washing pipeline, and described the first washer is connected with described the second inlet end by the ammonia pipeline, is disposed with the tenth diaphragm valve and the 15 pneumavalve on the ammonia pipeline between described the second inlet end and described the first washer.
Preferably, described the second tripping device also comprises:
The second heat exchanger, described the second heat exchanger is connected with described the second inlet end, the first cooling gas inlet, the outlet of the first cooling gas, the second outlet side, the second logical plug gas inlet and the first washer respectively by the ammonia pipeline;
Wherein, be disposed with the 11 diaphragm valve, the 16 pneumavalve, the 4th pressure switch on the ammonia pipeline between described the second inlet end and the second heat exchanger; Be provided with the 18 pneumavalve on the ammonia pipeline between described the first cooling gas inlet and the second heat exchanger; Be provided with the 19 pneumavalve on the ammonia pipeline between described the first cooling gas outlet and the second heat exchanger; Be disposed with the 5th pressure switch, the second temperature indicative control unit, the 12 diaphragm valve, the 17 pneumavalve and the 13 diaphragm valve on the ammonia pipeline between described the second outlet side and the second heat exchanger; Be disposed with the 14 diaphragm valve, the 12 diaphragm valve, the second temperature indicative control unit and the 5th pressure switch on the ammonia pipeline between the described second logical plug gas inlet and the second heat exchanger;
The second holding tank, described the second holding tank is connected with described the second heat exchanger and the second outlet side respectively by the ammonia pipeline;
Wherein, be provided with the 6th pressure switch on described the second holding tank, and be disposed with the 15 diaphragm valve, the 20 pneumavalve, the second temperature indicative control unit and the 5th pressure switch on the ammonia pipeline between described the second holding tank and the second heat exchanger, be disposed with the 16 diaphragm valve, the 21 pneumavalve, the 17 pneumavalve and the 13 diaphragm valve on the ammonia pipeline between described the second holding tank and the second outlet side.
Preferably, described Ammonia recovery storing device comprises:
The 3rd inlet end, described the 3rd inlet end is connected with described the second outlet side;
The first ammonia liquefying plant, described the first ammonia liquefying plant is connected with described the 3rd inlet end by the ammonia pipeline, be used for cooling liquid and separate the ammonia of described waste gas, and be disposed with the 17 diaphragm valve, the 22 pneumavalve and the 7th pressure switch on the ammonia pipeline between described the 3rd inlet end and the first ammonia liquefying plant;
The 3rd outlet side, described the 3rd outlet side is connected with described the first ammonia liquefying plant by the ammonia pipeline, and be disposed with the 8th pressure switch on the ammonia pipeline between described the first ammonia liquefying plant and the 3rd outlet side, the 3rd temperature indicative control unit, the 18 diaphragm valve, the 23 pneumavalve and the 19 diaphragm valve;
The second cooling gas inlet, described the second cooling gas inlet is connected with described the first ammonia liquefying plant by cooling air pipe, and is disposed with the 22 diaphragm valve and the 24 pneumavalve on the cooling air pipe between described the second cooling gas inlet and the first ammonia liquefying plant;
The outlet of the second cooling gas, described the second cooling gas outlet is connected with described the first ammonia liquefying plant by cooling air pipe;
The first liquefied ammonia storage tank, be provided with the 9th pressure switch and the first liquid level switch on described the first liquefied ammonia storage tank, and described the first liquefied ammonia storage tank is connected with described the first ammonia liquefying plant and the 3rd outlet side respectively by the ammonia pipeline, be disposed with the 20 diaphragm valve on the ammonia pipeline between described the first liquefied ammonia storage tank and described the first ammonia liquefying plant, the 3rd temperature indicative control unit and the 8th pressure switch are disposed with the 21 diaphragm valve on the ammonia pipeline between described the first liquefied ammonia storage tank and described the 3rd outlet side, the 23 pneumavalve and the 19 diaphragm valve.
Preferably, described the first ammonia liquefying plant comprises:
The 3rd heat exchanger and the 4th heat exchanger, described the second cooling gas inlet is connected with described the 3rd heat exchanger by cooling air pipe, described the second cooling gas outlet is connected with described the 4th heat exchanger by cooling air pipe, be connected by ammonia pipeline and cooling air pipe between described the 3rd heat exchanger and the 4th heat exchanger, and be disposed with the tenth pressure switch, a PT the 23 diaphragm valve and the 11 pressure switch on the ammonia pipeline between described the 3rd heat exchanger and the 4th heat exchanger.
Preferably, described Ammonia recovery storing device also comprises:
Threeway plug gas inlet, described threeway plug gas inlet is connected with described the first ammonia liquefying plant by the ammonia pipeline, and is disposed with the 24 diaphragm valve, the 18 diaphragm valve, the 3rd temperature control display unit and the 8th pressure switch on the ammonia pipeline between described threeway plug gas inlet and the first ammonia liquefying plant;
Threeway plug pneumatic outlet, described threeway plug pneumatic outlet is connected with described the first ammonia liquefying plant by the ammonia pipeline, and is provided with the 25 diaphragm valve on the ammonia pipeline between described threeway plug pneumatic outlet and the first ammonia liquefying plant;
The second washer, described the second washer is connected with described the first ammonia storing device by the washing pipeline.
Preferably, described Ammonia recovery storing device also comprises:
The second ammonia liquefying plant, described the second ammonia liquefying plant is connected with described the 3rd inlet end, the 3rd outlet side, threeway plug gas inlet and threeway plug pneumatic outlet respectively by the ammonia pipeline, and described the second ammonia liquefying plant is connected with the second cooling gas inlet and the outlet of the second cooling gas respectively by cooling air pipe, and described the second ammonia liquefying plant separates the ammonia of described waste gas by being used for cooling liquid;
Wherein, be disposed with 26 diaphragm valves on the ammonia pipeline between described the second ammonia liquefying plant in described the 3rd outlet side, the 25 pneumavalve and the 12 pressure switch, be disposed with the 13 pressure switch on the ammonia pipeline between described the second ammonia liquefying plant and the 3rd outlet side, the 4th temperature indicative control unit, the 27 diaphragm valve, the 26 pneumavalve and the 28 diaphragm valve, be disposed with the 29 diaphragm valve on the ammonia pipeline between described threeway plug gas inlet and described the second ammonia liquefying plant, the 27 diaphragm valve, the 4th temperature indicative control unit and the 13 pressure switch, be provided with the 30 diaphragm valve on the ammonia pipeline between described threeway plug pneumatic outlet and described the second ammonia liquefying plant, be disposed with the 31 diaphragm valve and the 27 pneumavalve on the cooling air pipe between described the second cooling gas inlet and described the second ammonia liquefying plant;
The second liquefied ammonia storage tank is provided with the 14 pressure switch and the second liquid level switch on described the second liquefied ammonia storage tank, and described the second liquefied ammonia storage tank is connected with described the second ammonia liquefying plant and the 3rd outlet side respectively by the ammonia pipeline;
Wherein, be disposed with the 32 diaphragm valve, the 4th temperature indicative control unit and the 13 pressure switch on the ammonia pipeline between described the second liquefied ammonia storage tank and described the second ammonia liquefying plant, be disposed with the 33 diaphragm valve, the 26 pneumavalve and the 28 diaphragm valve on the ammonia pipeline between described the second liquefied ammonia storage tank and described the 3rd outlet side;
The 3rd washer, described the 3rd washer is connected with described the second ammonia storing device by the washing pipeline.
Preferably, described the second ammonia liquefying plant comprises:
The 4th heat exchanger and the 5th heat exchanger, described the second cooling gas inlet is connected with described the 4th heat exchanger by cooling air pipe, described the second cooling gas outlet is connected with described the 5th heat exchanger by cooling air pipe, be connected by ammonia pipeline and cooling air pipe between described the 4th heat exchanger and the 5th heat exchanger, and be disposed with the 15 pressure switch, the 2nd PT the 34 diaphragm valve and the 16 pressure switch on the ammonia pipeline between described the 4th heat exchanger and the 5th heat exchanger.
Can be found out by such scheme, Ammonia recovery provided by the present invention system, comprise: pretreatment unit and Ammonia recovery storing device, wherein, described pretreatment unit is for separating of the solid particulate in the waste gas, water vapor and complex compound, described Ammonia recovery storing device is used for the ammonia of liquefaction waste gas, and storage liquefaction ammonia.Then Ammonia recovery provided by the present invention system can reclaim ammonia, and does not need it is processed again, reduced processing cost, avoided the problem of environmental pollution, and the ammonia that reclaims can recycle.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, the below will do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art, apparently, accompanying drawing in the following describes is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
A kind of Ammonia recovery system schematic that Fig. 1 provides for the embodiment of the invention;
The first tripping device synoptic diagram that Fig. 2 provides for the embodiment of the invention;
The second tripping device synoptic diagram that Fig. 3 provides for the embodiment of the invention;
The Ammonia recovery storing device synoptic diagram that Fig. 4 provides for the embodiment of the invention.
Embodiment
Embodiment one:
Present embodiment provides a kind of Ammonia recovery system, and this Ammonia recovery system is mainly used in the waste gas that produces in the GaN epitaxial growth process, as shown in Figure 1, comprising:
Pretreatment unit, described pretreatment unit is for separating of the solid particulate in the waste gas, water vapor and complex compound;
The Ammonia recovery storing device, described Ammonia recovery storing device is used for the ammonia of liquefaction waste gas, and storage liquefaction ammonia.
Wherein, described pretreatment unit comprises: the first tripping device, and described the first tripping device is for separating of the solid particulate in the described waste gas;
The second tripping device, described the second tripping device is for separating of the water vapour in the described waste gas and complex compound.
Can be found out by such scheme, Ammonia recovery provided by the present invention system, comprise: pretreatment unit and Ammonia recovery storing device, wherein, described pretreatment unit is for separating of the solid particulate in the waste gas, water vapor and complex compound, described Ammonia recovery storing device is used for the ammonia of liquefaction waste gas, and storage liquefaction ammonia.Then Ammonia recovery provided by the present invention system can reclaim ammonia, and does not need it is processed again, reduced processing cost, avoided the problem of environmental pollution, and the ammonia that reclaims can recycle.
Embodiment two:
Present embodiment provides another kind of Ammonia recovery system, comprising:
Pretreatment unit, described pretreatment unit is for separating of the solid particulate in the waste gas, water vapor and complex compound;
The Ammonia recovery storing device, described Ammonia recovery storing device is used for the ammonia of liquefaction waste gas, and storage liquefaction ammonia.
Wherein, described pretreatment unit comprises: the first tripping device, and described the first tripping device is for separating of the solid particulate in the described waste gas;
The second tripping device, described the second tripping device is for separating of the water vapour in the described waste gas and complex compound.
As shown in Figure 2, described the first tripping device comprises:
The first inlet end, described the first inlet end are the port that described waste gas enters described Ammonia recovery system.
The first filter F 1, described the first filter F 1 is connected with described the first inlet end by the ammonia pipeline, is used for the solid particulate of the described waste gas of filtering separation.
The first outlet side, described the first outlet side is connected with described the first filter F 1 by the ammonia pipeline.
Wherein, be disposed with the first diaphragm valve G1, the first pneumavalve Q1 and the first tensimeter PG1 on the ammonia pipeline between described the first inlet end and the first filter F 1, be disposed with the second tensimeter PG2, the second pneumavalve Q2 and the second diaphragm valve G2 on the ammonia pipeline between described the first filter F 1 and the first outlet side.
Described the first tripping device also comprises:
The first logical plug gas inlet, the described first logical plug gas inlet is connected with the first filter F 1 by the ammonia pipeline, and is disposed with the 3rd pneumavalve Q3 and the second tensimeter PG2 on the ammonia pipeline between the described first logical plug gas inlet and described the first filter F 1.
The first logical plug pneumatic outlet, the described first logical plug pneumatic outlet is connected with the first filter F 1 by the ammonia pipeline, and is disposed with the 4th pneumavalve Q4 and the first tensimeter PG1 on the ammonia pipeline between the described first logical plug pneumatic outlet and described the first filter F 1.
Owing to be provided with the first logical plug gas inlet and the first logical plug pneumatic outlet, so in the time of the ammonia pipeline in described the first tripping device or the 1 generation obstruction of the first filter F, can turn-off the first pneumavalve Q1 and the second pneumavalve Q2, open the 3rd pneumavalve Q3 and the 4th pneumavalve Q4, pass into high pressure gas (such as drying nitrogen) by the first logical plug gas inlet, to dredge described the first tripping device.
Described the first tripping device also comprises:
The second filter F 2, described the second filter F 2 is connected with described the first inlet end by the ammonia pipeline, and is connected with described the first outlet side by the ammonia pipeline.
Wherein, be disposed with the first diaphragm valve G1, the 5th pneumavalve Q5 and the 3rd tensimeter PG3 on the ammonia pipeline between described the first inlet end and the second filter F 2, be disposed with the 4th tensimeter PG4, the 6th pneumavalve Q6 and the 3rd diaphragm valve G3 on the ammonia pipeline between described the second filter F 2 and the first outlet side.
Described the second filter F 2 is connected with the described first logical plug gas inlet by the ammonia pipeline, and is disposed with the 4th tensimeter PG4 and the 7th pneumavalve Q7 on the ammonia pipeline between described the second filter F 2 and the described first logical plug gas inlet;
Described the second filter F 2 is connected with the described first logical plug pneumatic outlet by the ammonia pipeline, and is disposed with the 3rd tensimeter PG3 and the 8th pneumavalve Q8 on the ammonia pipeline between described the second filter F 2 and the described first logical plug pneumatic outlet.
Described the second filter F 2 is reserve filter, namely when described the first filter F 1 and associated conduit break down (as stopping up), can turn-off the first pneumavalve Q1 and the second pneumavalve Q2, open the 5th pneumavalve Q5 and the 6th pneumavalve Q6,2 work of described the second filter F, be that a described filter F 1 and the second filter F 2 can alternations, to guarantee the continuity of off gas treatment.
As shown in Figure 3, described the second tripping device comprises:
The second inlet end, described the second inlet end is connected with described the first outlet side.
The first heat exchanger H1, described the first heat exchanger H1 is connected with described the second inlet end by the ammonia pipeline, be used for water vapour and the complex compound of the described waste gas of refrigerated separation, and be disposed with the 4th diaphragm valve G4, the 9th pneumavalve Q9 and the first pressure switch PS1 on the ammonia pipeline between described the second inlet end and the first heat exchanger H1.
The second outlet side, described the second outlet side is connected with described the first heat exchanger H1 by the ammonia pipeline, and be disposed with the second pressure switch PS2 on the ammonia pipeline between described the first heat exchanger H1 and the second outlet side, the first temperature indicative control unit TIC1, the 5th diaphragm valve G5, the tenth pneumavalve Q10 and the 6th diaphragm valve G6.
The first cooling gas inlet, described the first cooling gas inlet is connected with described the first heat exchanger H1 by the ammonia pipeline, and is provided with the 11 pneumavalve Q11 on the ammonia pipeline between described the first cooling gas inlet and described the first heat exchanger H1.
The outlet of the first cooling gas, described the first cooling gas outlet is connected with described the first heat exchanger H1 by the ammonia pipeline, and is provided with the 12 pneumavalve Q12 on the ammonia pipeline between the outlet of described the first cooling gas and described the first heat exchanger H1.
The first holding tank S1, be provided with the 3rd pressure switch PS3 on described the first holding tank S1, and described the first holding tank S1 is connected with described First Heat Exchanger H1 and the second outlet side respectively by the ammonia pipeline, be disposed with the 7th diaphragm valve G7 on the ammonia pipeline between described the first holding tank S1 and described the first heat exchanger H1, the 13 pneumavalve Q13, the first temperature indicative control unit TIC1 and the second pressure switch PS2 are disposed with the 8th diaphragm valve G8 on the ammonia pipeline between described the first holding tank S1 and described the second outlet side, the 14 pneumavalve Q14, the tenth pneumavalve Q10 and the 6th diaphragm valve G6.
By pass into cooling gas (such as liquid nitrogen) to the first cooling gas inlet, and by described the first cooling gas outlet discharge, described cooling gas can cool off described waste gas, and water vapour and complex compound condensation in the described waste gas are in a liquid state, and collects by the first holding tank S1.
Described the second tripping device also comprises:
The second logical plug gas inlet, the described second logical plug gas inlet is connected with described the first heat exchanger H1 by the ammonia pipeline, and is disposed with the 9th diaphragm valve G9, the 5th diaphragm valve G5, the first temperature indicative control unit TIC1 and the second pressure switch PS2 on the ammonia pipeline between the described second logical plug gas inlet and the first heat exchanger H1.Owing to be provided with the second logical plug gas inlet, so in the time of the ammonia pipeline in described the second tripping device or the first heat exchanger H1 generation obstruction, can turn-off the 4th diaphragm valve G4(or the 9th pneumavalve Q9) and the 6th diaphragm valve G6(or the tenth pneumavalve Q10), open the 9th diaphragm valve G9 and the 12 pneumavalve Q12, pass into high pressure gas (such as drying nitrogen) by the first logical plug gas inlet, to dredge described the second tripping device.
The first washer Sb1, described the first washer Sb1 is connected with described the first heat exchanger H1 by the washing pipeline, and described the first washer Sb1 is connected with described the second inlet end by the ammonia pipeline, is disposed with the tenth diaphragm valve G10 and the 15 pneumavalve Q15 on the ammonia pipeline between described the second inlet end and described the first washer Sb1.Described the first washer Sb1 is used for cleaning described the first holding tank S1.
Described the second tripping device also comprises:
The second heat exchanger H2, described the second heat exchanger H2 is connected with described the second inlet end, the first cooling gas inlet, the outlet of the first cooling gas, the second outlet side, the second logical plug gas inlet and the first washer Sb1 respectively by the ammonia pipeline;
Wherein, be disposed with the tenth diaphragm valve G10, the 15 pneumavalve Q15, the 4th pressure switch PS4 on the ammonia pipeline between described the second inlet end and the second heat exchanger H2; Be provided with the 18 pneumavalve Q18 on the ammonia pipeline between described the first cooling gas inlet and the second heat exchanger H2, be provided with the 19 pneumavalve Q19 on the ammonia pipeline between described the first cooling gas outlet and the second heat exchanger H2, be disposed with the 5th pressure switch PS5 on the ammonia pipeline between described the second outlet side and the second heat exchanger H2, the second temperature indicative control unit TIC2, the 12 diaphragm valve G12, the 17 pneumavalve Q17 and the 13 diaphragm valve G13 are disposed with the 14 diaphragm valve G14 on the ammonia pipeline between the described second logical plug gas inlet and the second heat exchanger H2, the 12 diaphragm valve G12, the second temperature indicative control unit TIC2 and the 5th pressure switch PS5.
The second holding tank S2, described the second holding tank S2 is connected with described the second heat exchanger H2 and the second outlet side respectively by the ammonia pipeline;
Wherein, be provided with the 6th pressure switch PS6 on described the second holding tank S2, and be disposed with the 15 diaphragm valve G15, the 20 pneumavalve Q20, the second temperature indicative control unit TIC2 and the 5th pressure switch PS5 on the ammonia pipeline between described the second holding tank S2 and the second heat exchanger H2, be disposed with the 16 diaphragm valve G16, the 21 pneumavalve Q21, the 17 pneumavalve Q17 and the 13 diaphragm valve G13 on the ammonia pipeline between described the second holding tank S2 and the second outlet side.
Described the second heat exchanger H2 is heat exchanger for subsequent use, namely when described the first heat exchanger H1 and associated conduit break down (as stopping up), can turn-off the 4th diaphragm valve G4(or the 9th pneumavalve Q9) and the 6th diaphragm valve G6(or the tenth pneumavalve Q10), open the 11 diaphragm valve G11, the 16 pneumavalve Q16, the 13 diaphragm valve G13 and the 17 pneumavalve Q17, described the second heat exchanger H2 work, be that a described heat exchanger H1 and the second heat exchanger H2 can alternations, to guarantee the continuity of off gas treatment.
As shown in Figure 4, described Ammonia recovery storing device comprises:
The 3rd inlet end, described the 3rd inlet end is connected with described the second outlet side.
The first ammonia liquefying plant Y1, described the first ammonia liquefying plant Y1 is connected with described the 3rd inlet end by the ammonia pipeline, be used for cooling liquid and separate the ammonia of described waste gas, and be disposed with the 17 diaphragm valve G17, the 22 pneumavalve Q22 and the 7th pressure switch PS7 on the ammonia pipeline between described the 3rd inlet end and the first ammonia liquefying plant Y1.Described the first ammonia liquefying plant Y1 comprises: the 3rd heat exchanger H3 and the 4th heat exchanger H4, described the second cooling gas inlet is connected with described the 3rd heat exchanger H3 by cooling air pipe, described the second cooling gas outlet is connected with described the 4th heat exchanger H4 by cooling air pipe, be connected by ammonia pipeline and cooling air pipe between described the 3rd heat exchanger H3 and the 4th heat exchanger H4, and be disposed with the tenth pressure switch PS10 on the ammonia pipeline between described the 3rd heat exchanger H3 and the 4th heat exchanger H4, the one PT(PT1), the 23 diaphragm valve G23 and the 11 pressure switch PS11.Heat exchanger in described the first ammonia liquefying plant Y1 can also be for more than one or three and three.
The 3rd outlet side, described the 3rd outlet side is connected with described the first ammonia liquefying plant Y1 by the ammonia pipeline, and be disposed with the 8th pressure switch PS8 on the ammonia pipeline between described the first ammonia liquefying plant Y1 and the 3rd outlet side, the 3rd temperature indicative control unit TIC3, the 18 diaphragm valve G18, the 23 pneumavalve Q23 and the 19 diaphragm valve G19.
The second cooling gas inlet, described the second cooling gas inlet is connected with described the first ammonia liquefying plant Y1 by cooling air pipe, and is disposed with the 22 diaphragm valve G22 and the 24 pneumavalve Q24 on the cooling air pipe between described the second cooling gas inlet and the first ammonia liquefying plant Y1.Wherein, described ammonia pipeline is enclosed within the described cooling air pipe, and described cooling gas is distributed in the ammonia pipeline after entering in the cooling air pipe by the second cooling gas inlet, but can not enter the ammonia pipeline, just in described ammonia pipeline, form low temperature environment.
The outlet of the second cooling gas, described the second cooling gas outlet is connected with described the first ammonia liquefying plant Y1 by cooling air pipe.
The first liquefied ammonia storage tank C1, be provided with the 9th pressure switch PS9 and the first liquid level switch LS1 on described the first liquefied ammonia storage tank C1, and described the first liquefied ammonia storage tank C1 is connected with described the first ammonia liquefying plant Y1 and the 3rd outlet side respectively by the ammonia pipeline, be disposed with the 20 diaphragm valve G20 on the ammonia pipeline between described the first liquefied ammonia storage tank C1 and described the first ammonia liquefying plant Y1, the 3rd temperature indicative control unit TIC3 and the 8th pressure switch PS8 are disposed with the 21 diaphragm valve G21 on the ammonia pipeline between described the first liquefied ammonia storage tank Y1 and described the 3rd outlet side, the 23 pneumavalve Q23 and the 19 diaphragm valve G19.
Because the boiling point of ammonia is high than the boiling point of the gases such as the hydrogen in the waste gas, nitrogen, so ammonia can liquefy first and separate, the ammonia after the liquefaction is stored in the first liquefied ammonia storage tank C1, and other gas is discharged by the 3rd outlet side.
Described Ammonia recovery storing device also comprises:
Threeway plug gas inlet, described threeway plug gas inlet is connected with described the first ammonia liquefying plant Y1 by the ammonia pipeline, and is disposed with the 24 diaphragm valve G24, the 18 diaphragm valve G18, the 3rd temperature control display unit TIC3 and the 8th pressure switch PS8 on the ammonia pipeline between described threeway plug gas inlet and the first ammonia liquefying plant Y1.
Threeway plug pneumatic outlet, described threeway plug pneumatic outlet is connected with described the first ammonia liquefying plant Y1 by the ammonia pipeline, and is provided with the 25 diaphragm valve G25 on the ammonia pipeline between described threeway plug pneumatic outlet and the first ammonia liquefying plant Y1.
The second washer Sb2, described the second washer Sb2 is connected with described the first ammonia storing device Y1 by the washing pipeline, is used for cleaning described the first ammonia storing device Y1.
Owing to be provided with threeway plug gas inlet and threeway plug pneumatic outlet, so when described Ammonia recovery storing device or the first ammonia liquefying plant Y1 wherein, pipeline etc. occur to stop up, can turn-off the 23 pneumavalve Q23(or the 19 diaphragm valve G19) and the 22 pneumavalve Q22(or the 17 diaphragm valve G17), open the 24 diaphragm valve G24 and the 25 diaphragm valve G25, pass into high pressure gas (such as drying nitrogen) by threeway plug gas inlet, to dredge described Ammonia recovery storing device.
Described Ammonia recovery storing device also comprises:
The second ammonia liquefying plant Y2, described the second ammonia liquefying plant Y2 is connected with described the 3rd inlet end, the 3rd outlet side, threeway plug gas inlet and threeway plug pneumatic outlet respectively by the ammonia pipeline, and described the second ammonia liquefying plant Y2 is connected with the second cooling gas inlet and the outlet of the second cooling gas respectively by cooling air pipe, and described the second ammonia liquefying plant Y2 separates the ammonia of described waste gas by being used for cooling liquid.
Wherein, be disposed with 26 diaphragm valve G26 on the ammonia pipeline between described the second ammonia liquefying plant Y2 in described the 3rd outlet side, the 25 pneumavalve Q25 and the 12 pressure switch PS12, be disposed with the 13 pressure switch PS13 on the ammonia pipeline between described the second ammonia liquefying plant Y2 and the 3rd outlet side, the 4th temperature indicative control unit TIC3, the 27 diaphragm valve G27, the 26 pneumavalve Q26 and the 28 diaphragm valve G28, be disposed with the 29 diaphragm valve G29 on the ammonia pipeline between described threeway plug gas inlet and described the second ammonia liquefying plant Y2, the 27 diaphragm valve G27, the 4th temperature indicative control unit TIC4 and the 13 pressure switch PS13, be provided with the 30 diaphragm valve G30 on the ammonia pipeline between described threeway plug pneumatic outlet and described the second ammonia liquefying plant Y2, be disposed with the 31 diaphragm valve G31 and the 27 pneumavalve Q27 on the cooling air pipe between described the second cooling gas inlet and described the second ammonia liquefying plant Y2.Described the second ammonia liquefying plant Y2 comprises: the 4th heat exchanger H4 and the 5th heat exchanger H5, described the second cooling gas inlet is connected with described the 4th heat exchanger H4 by cooling air pipe, described the second cooling gas outlet is connected with described the 5th heat exchanger H5 by cooling air pipe, be connected by ammonia pipeline and cooling air pipe between described the 4th heat exchanger H4 and the 5th heat exchanger H5, and be disposed with the 15 pressure switch PS15 on the ammonia pipeline between described the 4th heat exchanger H4 and the 5th heat exchanger H5, the 2nd PT(PT2), the 34 diaphragm valve G34 and the 16 pressure switch PS16.
The second liquefied ammonia storage tank C2, be provided with the 14 pressure switch P14 and the second liquid level switch LS2 on described the second liquefied ammonia storage tank C2, and described the second liquefied ammonia storage tank C2 is connected with described the second ammonia liquefying plant Y2 and the 3rd outlet side respectively by the ammonia pipeline.
Wherein, be disposed with the 32 diaphragm valve G32, the 4th temperature indicative control unit TIC4 and the 13 pressure switch PS13 on the ammonia pipeline between described the second liquefied ammonia storage tank C2 and described the second ammonia liquefying plant Y2, be disposed with the 33 diaphragm valve G33, the 26 pneumavalve Q26 and the 28 diaphragm valve G28 on the ammonia pipeline between described the second liquefied ammonia storage tank C2 and described the 3rd outlet side.
The 3rd washer Sb3, described the 3rd washer Sb3 is connected with described the second ammonia storing device C2 by the washing pipeline.
Described the second ammonia liquefying plant Y2 is ammonia liquefying plant for subsequent use, namely when described the first ammonia liquefying plant Y1 and associated conduit break down (as stopping up), can turn-off the 23 pneumavalve Q23(or the 19 diaphragm valve G19) and the 22 pneumavalve Q22(or the 17 diaphragm valve G17), open the 26 diaphragm valve G26, the 25 pneumavalve Q25, the 28 diaphragm valve G28 and the 26 pneumavalve Q26, described the second ammonia liquefying plant Y2 work, be that described the first ammonia liquefying plant Y1 and the second ammonia liquefying plant Y2 can alternations, to guarantee the continuity of off gas treatment.
The above only is preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.

Claims (14)

1. an Ammonia recovery system is characterized in that, comprising:
Pretreatment unit, described pretreatment unit is for separating of the solid particulate in the waste gas, water vapor and complex compound;
The Ammonia recovery storing device, described Ammonia recovery storing device is used for the ammonia of liquefaction waste gas, and storage liquefaction ammonia.
2. described Ammonia recovery system according to claim 1 is characterized in that described pretreatment unit comprises:
The first tripping device, described the first tripping device is for separating of the solid particulate in the described waste gas;
The second tripping device, described the second tripping device is for separating of the water vapour in the described waste gas and complex compound.
3. described Ammonia recovery system according to claim 2 is characterized in that described the first tripping device comprises:
The first inlet end, described the first inlet end are the port that described waste gas enters described Ammonia recovery system;
The first strainer, described the first strainer is connected with described the first inlet end by the ammonia pipeline, is used for the solid particulate of the described waste gas of filtering separation;
The first outlet side, described the first outlet side is connected with described the first strainer by the ammonia pipeline;
Wherein, be disposed with the first diaphragm valve, the first pneumavalve and the first tensimeter on the ammonia pipeline between described the first inlet end and the first strainer, be disposed with the second tensimeter, the second pneumavalve and the second diaphragm valve on the ammonia pipeline between described the first strainer and the first outlet side.
4. described Ammonia recovery system according to claim 3 is characterized in that described the first tripping device also comprises:
The first logical plug gas inlet, the described first logical plug gas inlet is connected with the first strainer by the ammonia pipeline, and is disposed with the 3rd pneumavalve and the second tensimeter on the ammonia pipeline between the described first logical plug gas inlet and described the first strainer;
The first logical plug pneumatic outlet, the described first logical plug pneumatic outlet is connected with the first strainer by the ammonia pipeline, and is disposed with the 4th pneumavalve and the first tensimeter on the ammonia pipeline between the described first logical plug pneumatic outlet and described the first strainer.
5. described Ammonia recovery system according to claim 4 is characterized in that described the first tripping device also comprises:
The second strainer, described the second strainer is connected with described the first inlet end by the ammonia pipeline, and is connected with described the first outlet side by the ammonia pipeline;
Wherein, be disposed with the first diaphragm valve, the 5th pneumavalve and the 3rd tensimeter on the ammonia pipeline between described the first inlet end and the second strainer, be disposed with the 4th tensimeter, the 6th pneumavalve and the 3rd diaphragm valve on the ammonia pipeline between described the second strainer and the first outlet side.
6. described Ammonia recovery system according to claim 5, it is characterized in that, described the second strainer is connected with the described first logical plug gas inlet by the ammonia pipeline, and is disposed with the 4th tensimeter and the 7th pneumavalve on the ammonia pipeline between described the second strainer and the described first logical plug gas inlet;
Described the second strainer is connected with the described first logical plug pneumatic outlet by the ammonia pipeline, and is disposed with the 3rd tensimeter and the 8th pneumavalve on the ammonia pipeline between described the second strainer and the described first logical plug pneumatic outlet.
7. described Ammonia recovery system according to claim 2 is characterized in that described the second tripping device comprises:
The second inlet end, described the second inlet end is connected with described the first outlet side;
The first heat exchanger, described the first heat exchanger is connected with described the second inlet end by the ammonia pipeline, be used for water vapour and the complex compound of the described waste gas of refrigerated separation, and be disposed with the 4th diaphragm valve, the 9th pneumavalve and the first pressure switch on the ammonia pipeline between described the second inlet end and the first heat exchanger;
The second outlet side, described the second outlet side is connected with described the first heat exchanger by the ammonia pipeline, and be disposed with the second pressure switch on the ammonia pipeline between described the first heat exchanger and the second outlet side, the first temperature indicative control unit, the 5th diaphragm valve, the tenth pneumavalve and the 6th diaphragm valve;
The first cooling gas inlet, described the first cooling gas inlet is connected with described the first heat exchanger by the ammonia pipeline, and is provided with the 11 pneumavalve on the ammonia pipeline between described the first cooling gas inlet and described the first heat exchanger;
The outlet of the first cooling gas, described the first cooling gas outlet is connected with described the first heat exchanger by the ammonia pipeline, and is provided with the 12 pneumavalve on the ammonia pipeline between the outlet of described the first cooling gas and described the first heat exchanger;
The first holding tank, be provided with the 3rd pressure switch on described the first holding tank, and described the first holding tank is connected with described First Heat Exchanger and the second outlet side respectively by the ammonia pipeline, be disposed with the 7th diaphragm valve, the 13 pneumavalve, the first temperature indicative control unit and the second pressure switch on the ammonia pipeline between described the first holding tank and described the first heat exchanger, be disposed with the 8th diaphragm valve, the 14 pneumavalve, the tenth pneumavalve and the 6th diaphragm valve on the ammonia pipeline between described the first holding tank and described the second outlet side.
8. described Ammonia recovery system according to claim 7 is characterized in that described the second tripping device also comprises:
The second logical plug gas inlet, the described second logical plug gas inlet is connected with described the first heat exchanger by the ammonia pipeline, and is disposed with the 9th diaphragm valve, the 5th diaphragm valve, the first temperature indicative control unit and the second pressure switch on the ammonia pipeline between the described second logical plug gas inlet and the first heat exchanger;
The first washer, described the first washer is connected with described the first heat exchanger by the washing pipeline, and described the first washer is connected with described the second inlet end by the ammonia pipeline, is disposed with the tenth diaphragm valve and the 15 pneumavalve on the ammonia pipeline between described the second inlet end and described the first washer.
9. described Ammonia recovery system according to claim 8 is characterized in that described the second tripping device also comprises:
The second heat exchanger, described the second heat exchanger is connected with described the second inlet end, the first cooling gas inlet, the outlet of the first cooling gas, the second outlet side, the second logical plug gas inlet and the first washer respectively by the ammonia pipeline;
Wherein, be disposed with the 11 diaphragm valve, the 16 pneumavalve, the 4th pressure switch on the ammonia pipeline between described the second inlet end and the second heat exchanger; Be provided with the 18 pneumavalve on the ammonia pipeline between described the first cooling gas inlet and the second heat exchanger; Be provided with the 19 pneumavalve on the ammonia pipeline between described the first cooling gas outlet and the second heat exchanger; Be disposed with the 5th pressure switch, the second temperature indicative control unit, the 12 diaphragm valve, the 17 pneumavalve and the 13 diaphragm valve on the ammonia pipeline between described the second outlet side and the second heat exchanger; Be disposed with the 14 diaphragm valve, the 12 diaphragm valve, the second temperature indicative control unit and the 5th pressure switch on the ammonia pipeline between the described second logical plug gas inlet and the second heat exchanger;
The second holding tank, described the second holding tank is connected with described the second heat exchanger and the second outlet side respectively by the ammonia pipeline;
Wherein, be provided with the 6th pressure switch on described the second holding tank, and be disposed with the 15 diaphragm valve, the 20 pneumavalve, the second temperature indicative control unit and the 5th pressure switch on the ammonia pipeline between described the second holding tank and the second heat exchanger, be disposed with the 16 diaphragm valve, the 21 pneumavalve, the 17 pneumavalve and the 13 diaphragm valve on the ammonia pipeline between described the second holding tank and the second outlet side.
10. described Ammonia recovery system according to claim 1 is characterized in that described Ammonia recovery storing device comprises:
The 3rd inlet end, described the 3rd inlet end is connected with described the second outlet side;
The first ammonia liquefying plant, described the first ammonia liquefying plant is connected with described the 3rd inlet end by the ammonia pipeline, be used for cooling liquid and separate the ammonia of described waste gas, and be disposed with the 17 diaphragm valve, the 22 pneumavalve and the 7th pressure switch on the ammonia pipeline between described the 3rd inlet end and the first ammonia liquefying plant;
The 3rd outlet side, described the 3rd outlet side is connected with described the first ammonia liquefying plant by the ammonia pipeline, and be disposed with the 8th pressure switch on the ammonia pipeline between described the first ammonia liquefying plant and the 3rd outlet side, the 3rd temperature indicative control unit, the 18 diaphragm valve, the 23 pneumavalve and the 19 diaphragm valve;
The second cooling gas inlet, described the second cooling gas inlet is connected with described the first ammonia liquefying plant by cooling air pipe, and is disposed with the 22 diaphragm valve and the 24 pneumavalve on the cooling air pipe between described the second cooling gas inlet and the first ammonia liquefying plant;
The outlet of the second cooling gas, described the second cooling gas outlet is connected with described the first ammonia liquefying plant by cooling air pipe;
The first liquefied ammonia storage tank, be provided with the 9th pressure switch and the first liquid level switch on described the first liquefied ammonia storage tank, and described the first liquefied ammonia storage tank is connected with described the first ammonia liquefying plant and the 3rd outlet side respectively by the ammonia pipeline, be disposed with the 20 diaphragm valve on the ammonia pipeline between described the first liquefied ammonia storage tank and described the first ammonia liquefying plant, the 3rd temperature indicative control unit and the 8th pressure switch are disposed with the 21 diaphragm valve on the ammonia pipeline between described the first liquefied ammonia storage tank and described the 3rd outlet side, the 23 pneumavalve and the 19 diaphragm valve.
11. described Ammonia recovery system according to claim 10 is characterized in that described the first ammonia liquefying plant comprises:
The 3rd heat exchanger and the 4th heat exchanger, described the second cooling gas inlet is connected with described the 3rd heat exchanger by cooling air pipe, described the second cooling gas outlet is connected with described the 4th heat exchanger by cooling air pipe, be connected by ammonia pipeline and cooling air pipe between described the 3rd heat exchanger and the 4th heat exchanger, and be disposed with the tenth pressure switch, a PT the 23 diaphragm valve and the 11 pressure switch on the ammonia pipeline between described the 3rd heat exchanger and the 4th heat exchanger.
12. described Ammonia recovery system according to claim 11 is characterized in that described Ammonia recovery storing device also comprises:
Threeway plug gas inlet, described threeway plug gas inlet is connected with described the first ammonia liquefying plant by the ammonia pipeline, and is disposed with the 24 diaphragm valve, the 18 diaphragm valve, the 3rd temperature control display unit and the 8th pressure switch on the ammonia pipeline between described threeway plug gas inlet and the first ammonia liquefying plant;
Threeway plug pneumatic outlet, described threeway plug pneumatic outlet is connected with described the first ammonia liquefying plant by the ammonia pipeline, and is provided with the 25 diaphragm valve on the ammonia pipeline between described threeway plug pneumatic outlet and the first ammonia liquefying plant;
The second washer, described the second washer is connected with described the first ammonia storing device by the washing pipeline.
13. described Ammonia recovery system according to claim 12 is characterized in that described Ammonia recovery storing device also comprises:
The second ammonia liquefying plant, described the second ammonia liquefying plant is connected with described the 3rd inlet end, the 3rd outlet side, threeway plug gas inlet and threeway plug pneumatic outlet respectively by the ammonia pipeline, and described the second ammonia liquefying plant is connected with the second cooling gas inlet and the outlet of the second cooling gas respectively by cooling air pipe, and described the second ammonia liquefying plant separates the ammonia of described waste gas by being used for cooling liquid;
Wherein, be disposed with 26 diaphragm valves on the ammonia pipeline between described the second ammonia liquefying plant in described the 3rd outlet side, the 25 pneumavalve and the 12 pressure switch, be disposed with the 13 pressure switch on the ammonia pipeline between described the second ammonia liquefying plant and the 3rd outlet side, the 4th temperature indicative control unit, the 27 diaphragm valve, the 26 pneumavalve and the 28 diaphragm valve, be disposed with the 29 diaphragm valve on the ammonia pipeline between described threeway plug gas inlet and described the second ammonia liquefying plant, the 27 diaphragm valve, the 4th temperature indicative control unit and the 13 pressure switch, be provided with the 30 diaphragm valve on the ammonia pipeline between described threeway plug pneumatic outlet and described the second ammonia liquefying plant, be disposed with the 31 diaphragm valve and the 27 pneumavalve on the cooling air pipe between described the second cooling gas inlet and described the second ammonia liquefying plant;
The second liquefied ammonia storage tank is provided with the 14 pressure switch and the second liquid level switch on described the second liquefied ammonia storage tank, and described the second liquefied ammonia storage tank is connected with described the second ammonia liquefying plant and the 3rd outlet side respectively by the ammonia pipeline;
Wherein, be disposed with the 32 diaphragm valve, the 4th temperature indicative control unit and the 13 pressure switch on the ammonia pipeline between described the second liquefied ammonia storage tank and described the second ammonia liquefying plant, be disposed with the 33 diaphragm valve, the 26 pneumavalve and the 28 diaphragm valve on the ammonia pipeline between described the second liquefied ammonia storage tank and described the 3rd outlet side;
The 3rd washer, described the 3rd washer is connected with described the second ammonia storing device by the washing pipeline.
14. described Ammonia recovery system according to claim 13 is characterized in that described the second ammonia liquefying plant comprises:
The 4th heat exchanger and the 5th heat exchanger, described the second cooling gas inlet is connected with described the 4th heat exchanger by cooling air pipe, described the second cooling gas outlet is connected with described the 5th heat exchanger by cooling air pipe, be connected by ammonia pipeline and cooling air pipe between described the 4th heat exchanger and the 5th heat exchanger, and be disposed with the 15 pressure switch, the 2nd PT the 34 diaphragm valve and the 16 pressure switch on the ammonia pipeline between described the 4th heat exchanger and the 5th heat exchanger.
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