CN103073026B - Ammonia gas recovery system - Google Patents
Ammonia gas recovery system Download PDFInfo
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- CN103073026B CN103073026B CN201310049765.XA CN201310049765A CN103073026B CN 103073026 B CN103073026 B CN 103073026B CN 201310049765 A CN201310049765 A CN 201310049765A CN 103073026 B CN103073026 B CN 103073026B
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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
Technical field
The invention belongs to off gas treatment field, particularly relate to a kind of Ammonia recovery system.
Background technology
The characteristic of light emitting diode and high brightness energy-conservation due to it, then semiconductor lighting and LCD backlight aspect are widely used, the main production technology of blue-ray LED is GaN epitaxy technology, uses NH3 in a large number in process of production, H2 and N2.But what production process produced gets up very difficult containing NH3 off gas treatment.
Method main is at present water washing method, and the characteristic namely utilizing NH3 soluble in water is water-soluble by NH3, but aforesaid method cause a large amount of ammonia-containing water need process, result in high processing cost or untreated up to standard namely discharge cause environment contaminated.
Summary of the invention
In view of this, the invention provides a kind of Ammonia recovery system, to solve the high processing cost of off gas treatment and the problem of environmental pollution in the prior art.
This Ammonia recovery system comprises:
A kind of Ammonia recovery system, comprising:
Pretreatment unit, described pretreatment unit is for separating of the solid particulate in waste gas, water vapor and complex compound;
Ammonia recovery storing device, the ammonia of described Ammonia recovery storing device for liquefying in waste gas, and store liquefaction ammonia.
Preferably, described pretreatment unit comprises:
First tripping device, described first tripping device is for separating of the solid particulate in described waste gas;
Second tripping device, described second tripping device is for separating of the water vapour in described waste gas and complex compound.
Preferably, described first tripping device comprises:
First inlet end, described first inlet end is the port that described waste gas enters described Ammonia recovery system;
First strainer, described first strainer is connected with described first inlet end, for the solid particulate in waste gas described in filtering separation by ammonia pipeline;
First outlet side, described first outlet side is connected with described first strainer by ammonia pipeline;
Wherein, ammonia pipeline between described first inlet end and the first strainer is disposed with the first diaphragm valve, the first pneumavalve and the first tensimeter, the ammonia pipeline between described first strainer and the first outlet side is disposed with the second tensimeter, the second pneumavalve and the second diaphragm valve.
Preferably, described first tripping device also comprises:
First leads to plug gas inlet, and the described first logical plug gas inlet is connected with the first strainer by ammonia pipeline, and the described first logical ammonia pipeline filled between gas inlet and described first strainer is disposed with the 3rd pneumavalve and the second tensimeter;
First leads to plug pneumatic outlet, and the described first logical plug pneumatic outlet is connected with the first strainer by ammonia pipeline, and the described first logical ammonia pipeline filled between pneumatic outlet and described first strainer is disposed with the 4th pneumavalve and the first tensimeter.
Preferably, described first tripping device also comprises:
Second strainer, described second strainer is connected with described first inlet end by ammonia pipeline, and is connected with described first outlet side by ammonia pipeline;
Wherein, ammonia pipeline between described first inlet end and the second strainer is disposed with the first diaphragm valve, the 5th pneumavalve and the 3rd tensimeter, the ammonia pipeline between described second strainer and the first outlet side is disposed with the 4th tensimeter, the 6th pneumavalve and the 3rd diaphragm valve.
Preferably, described second strainer logical fill in gas inlet by ammonia pipeline and described first and is connected, and described second strainer and described first leads on the ammonia pipeline filled between gas inlet and is disposed with the 4th tensimeter and the 7th pneumavalve;
Described second strainer logical fill in pneumatic outlet by ammonia pipeline and described first and is connected, and described second strainer and described first leads on the ammonia pipeline filled between pneumatic outlet and is disposed with the 3rd tensimeter and the 8th pneumavalve.
Preferably, described second tripping device comprises:
Second inlet end, described second inlet end is connected with described first outlet side;
First heat exchanger, described first heat exchanger is connected with described second inlet end by ammonia pipeline, for the water vapour in waste gas described in refrigerated separation and complex compound, and ammonia pipeline between described second inlet end and the first heat exchanger is disposed with the 4th diaphragm valve, the 9th pneumavalve and the first pressure switch;
Second outlet side, described second outlet side is connected with described first heat exchanger by ammonia pipeline, and ammonia pipeline between described first heat exchanger and the second outlet side is disposed with the second pressure switch, the first Temperature displaying control unit, the 5th diaphragm valve, the tenth pneumavalve and the 6th diaphragm valve;
First cooling gas inlet, described first cooling gas inlet is connected with described first heat exchanger by ammonia pipeline, and ammonia pipeline between described first cooling gas inlet and described first heat exchanger is provided with the 11 pneumavalve;
First cooling gas outlet, described first cooling gas outlet be connected with described first heat exchanger by ammonia pipeline, and described first cooling gas export with described first heat exchanger between ammonia pipeline on be provided with the 12 pneumavalve;
First holding tank, described first holding tank is provided with the 3rd pressure switch, and described first holding tank is connected with the second outlet side with described First Heat Exchanger respectively by ammonia pipeline, ammonia pipeline between described first holding tank and described first heat exchanger is disposed with the 7th diaphragm valve, the 13 pneumavalve, the first Temperature displaying control unit and the second pressure switch, the ammonia pipeline between described first holding tank and described second outlet side is disposed with the 8th diaphragm valve, the 14 pneumavalve, the tenth pneumavalve and the 6th diaphragm valve.
Preferably, described second tripping device also comprises:
Second logical plug gas inlet, described second logical plug gas inlet is connected with described first heat exchanger by ammonia pipeline, and the described second logical ammonia pipeline filled between gas inlet and the first heat exchanger is disposed with the 9th diaphragm valve, the 5th diaphragm valve, the first Temperature displaying control unit and the second pressure switch;
First washer, described first washer is connected with described first heat exchanger by washing pipeline, and described first washer is connected with described second inlet end by ammonia pipeline, the ammonia pipeline between described second inlet end and described first washer is disposed with the tenth diaphragm valve and the 15 pneumavalve.
Preferably, described second tripping device also comprises:
Second heat exchanger, described second heat exchanger is exported with described second inlet end, the first cooling gas inlet, the first cooling gas respectively by ammonia pipeline, the second outlet side, second logical filled in gas inlet and is connected with the first washer;
Wherein, the ammonia pipeline between described second inlet end and the second heat exchanger is disposed with the 11 diaphragm valve, the 16 pneumavalve, the 4th pressure switch; Ammonia pipeline between described first cooling gas inlet and the second heat exchanger is provided with the 18 pneumavalve; Ammonia pipeline between described first cooling gas outlet and the second heat exchanger is provided with the 19 pneumavalve; Ammonia pipeline between described second outlet side and the second heat exchanger is disposed with the 5th pressure switch, the second Temperature displaying control unit, the 12 diaphragm valve, the 17 pneumavalve and the 13 diaphragm valve; Ammonia pipeline between described second logical plug gas inlet and the second heat exchanger is disposed with the 14 diaphragm valve, the 12 diaphragm valve, the second Temperature displaying control unit and the 5th pressure switch;
Second holding tank, described second holding tank is connected with the second outlet side with described second heat exchanger respectively by ammonia pipeline;
Wherein, described second holding tank is provided with the 6th pressure switch, and ammonia pipeline between described second holding tank and the second heat exchanger is disposed with the 15 diaphragm valve, the 20 pneumavalve, the second Temperature displaying control unit and the 5th pressure switch, the ammonia pipeline between described second holding tank and the second outlet side is disposed with the 16 diaphragm valve, the 21 pneumavalve, the 17 pneumavalve and the 13 diaphragm valve.
Preferably, described Ammonia recovery storing device comprises:
3rd inlet end, described 3rd inlet end is connected with described second outlet side;
First ammonia liquefying plant, described first ammonia liquefying plant is connected with described 3rd inlet end by ammonia pipeline, be separated the ammonia in described waste gas for cooling liquid, and ammonia pipeline between described 3rd inlet end and the first ammonia liquefying plant is disposed with the 17 diaphragm valve, the 22 pneumavalve and the 7th pressure switch;
3rd outlet side, described 3rd outlet side is connected with described first ammonia liquefying plant by ammonia pipeline, and ammonia pipeline between described first ammonia liquefying plant and the 3rd outlet side is disposed with the 8th pressure switch, the 3rd Temperature displaying control unit, the 18 diaphragm valve, the 23 pneumavalve and the 19 diaphragm valve;
Second cooling gas inlet, described second cooling gas inlet is connected with described first ammonia liquefying plant by cooling air pipe, and cooling air pipe between described second cooling gas inlet and the first ammonia liquefying plant is disposed with the 22 diaphragm valve and the 24 pneumavalve;
Second cooling gas outlet, described second cooling gas outlet is connected with described first ammonia liquefying plant by cooling air pipe;
First liquefied ammonia storage tank, described first liquefied ammonia storage tank is provided with the 9th pressure switch and the first liquid level switch, and described first liquefied ammonia storage tank is connected with the 3rd outlet side with described first ammonia liquefying plant respectively by ammonia pipeline, ammonia pipeline between described first liquefied ammonia storage tank and described first ammonia liquefying plant is disposed with the 20 diaphragm valve, 3rd Temperature displaying control unit and the 8th pressure switch, ammonia pipeline between described first liquefied ammonia storage tank and described 3rd outlet side is disposed with the 21 diaphragm valve, 23 pneumavalve and the 19 diaphragm valve.
Preferably, described first ammonia liquefying plant comprises:
3rd heat exchanger and the 4th heat exchanger, described second cooling gas inlet is connected with described 3rd heat exchanger by cooling air pipe, described second cooling gas outlet is connected with described 4th heat exchanger by cooling air pipe, be connected with cooling air pipe by ammonia pipeline between described 3rd heat exchanger and the 4th heat exchanger, and ammonia pipeline between described 3rd heat exchanger and the 4th heat exchanger is disposed with the tenth pressure switch, PT the 23 diaphragm valve and the 11 pressure switch.
Preferably, described Ammonia recovery storing device also comprises:
Threeway plug gas inlet, described threeway plug gas inlet is connected with described first ammonia liquefying plant by ammonia pipeline, and ammonia pipeline between described threeway plug gas inlet and the first ammonia liquefying plant is disposed with the 24 diaphragm valve, the 18 diaphragm valve, the 3rd temperature control display unit and the 8th pressure switch;
Threeway plug pneumatic outlet, described threeway plug pneumatic outlet is connected with described first ammonia liquefying plant by ammonia pipeline, and ammonia pipeline between described threeway plug pneumatic outlet and the first ammonia liquefying plant is provided with the 25 diaphragm valve;
Second washer, described second washer is connected with described first ammonia storing device by washing pipeline.
Preferably, described Ammonia recovery storing device also comprises:
Second ammonia liquefying plant, described second ammonia liquefying plant is connected with threeway plug pneumatic outlet with described 3rd inlet end, the 3rd outlet side, threeway plug gas inlet respectively by ammonia pipeline, and described second ammonia liquefying plant is exported with the second cooling gas with the second cooling gas inlet respectively by cooling air pipe and is connected, described second ammonia liquefying plant is by being separated the ammonia in described waste gas for cooling liquid;
Wherein, ammonia pipeline described in described 3rd outlet side between the second ammonia liquefying plant is disposed with 26 diaphragm valves, 25 pneumavalve and the 12 pressure switch, ammonia pipeline between described second ammonia liquefying plant and the 3rd outlet side is disposed with the 13 pressure switch, 4th Temperature displaying control unit, 27 diaphragm valve, 26 pneumavalve and the 28 diaphragm valve, ammonia pipeline between described threeway plug gas inlet and described second ammonia liquefying plant is disposed with the 29 diaphragm valve, 27 diaphragm valve, 4th Temperature displaying control unit and the 13 pressure switch, ammonia pipeline between described threeway plug pneumatic outlet and described second ammonia liquefying plant is provided with the 30 diaphragm valve, cooling air pipe between described second cooling gas inlet and described second ammonia liquefying plant is disposed with the 31 diaphragm valve and the 27 pneumavalve,
Second liquefied ammonia storage tank, described second liquefied ammonia storage tank is provided with the 14 pressure switch and the second liquid level switch, and described second liquefied ammonia storage tank is connected with the 3rd outlet side with described second ammonia liquefying plant respectively by ammonia pipeline;
Wherein, ammonia pipeline between described second liquefied ammonia storage tank and described second ammonia liquefying plant is disposed with the 32 diaphragm valve, the 4th Temperature displaying control unit and the 13 pressure switch, the ammonia pipeline between described second liquefied ammonia storage tank and described 3rd outlet side is disposed with the 33 diaphragm valve, the 26 pneumavalve and the 28 diaphragm valve;
3rd washer, described 3rd washer is connected with described second ammonia storing device by washing pipeline.
Preferably, described second ammonia liquefying plant comprises:
4th heat exchanger and the 5th heat exchanger, described second cooling gas inlet is connected with described 4th heat exchanger by cooling air pipe, described second cooling gas outlet is connected with described 5th heat exchanger by cooling air pipe, be connected with cooling air pipe by ammonia pipeline between described 4th heat exchanger and the 5th heat exchanger, and ammonia pipeline between described 4th heat exchanger and the 5th heat exchanger is disposed with the 15 pressure switch, the 2nd PT the 34 diaphragm valve and the 16 pressure switch.
As can be seen from the above scheme, Ammonia recovery system provided by the present invention, comprise: pretreatment unit and Ammonia recovery storing device, wherein, described pretreatment unit is for separating of the solid particulate in waste gas, water vapor and complex compound, the ammonia of described Ammonia recovery storing device for liquefying in waste gas, and store liquefaction ammonia.Then Ammonia recovery system provided by the present invention can reclaim ammonia, and does not need again to process it, reduces processing cost, avoids the problem of environmental pollution, and the ammonia reclaimed can recycle.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
A kind of Ammonia recovery system schematic that Fig. 1 provides for the embodiment of the present invention;
The first tripping device schematic diagram that Fig. 2 provides for the embodiment of the present invention;
The second tripping device schematic diagram that Fig. 3 provides for the embodiment of the present invention;
The Ammonia recovery storing device schematic diagram that Fig. 4 provides for the embodiment of the present invention.
Embodiment
Embodiment one:
Present embodiments provide a kind of Ammonia recovery system, this Ammonia recovery system is mainly used in the waste gas produced in GaN epitaxy production process, as shown in Figure 1, comprising:
Pretreatment unit, described pretreatment unit is for separating of the solid particulate in waste gas, water vapor and complex compound;
Ammonia recovery storing device, the ammonia of described Ammonia recovery storing device for liquefying in waste gas, and store liquefaction ammonia.
Wherein, described pretreatment unit comprises: the first tripping device, and described first tripping device is for separating of the solid particulate in described waste gas;
Second tripping device, described second tripping device is for separating of the water vapour in described waste gas and complex compound.
As can be seen from the above scheme, Ammonia recovery system provided by the present invention, comprise: pretreatment unit and Ammonia recovery storing device, wherein, described pretreatment unit is for separating of the solid particulate in waste gas, water vapor and complex compound, the ammonia of described Ammonia recovery storing device for liquefying in waste gas, and store liquefaction ammonia.Then Ammonia recovery system provided by the present invention can reclaim ammonia, and does not need again to process it, reduces processing cost, avoids the problem of environmental pollution, and the ammonia reclaimed can recycle.
Embodiment two:
Present embodiments provide another kind of Ammonia recovery system, comprising:
Pretreatment unit, described pretreatment unit is for separating of the solid particulate in waste gas, water vapor and complex compound;
Ammonia recovery storing device, the ammonia of described Ammonia recovery storing device for liquefying in waste gas, and store liquefaction ammonia.
Wherein, described pretreatment unit comprises: the first tripping device, and described first tripping device is for separating of the solid particulate in described waste gas;
Second tripping device, described second tripping device is for separating of the water vapour in described waste gas and complex compound.
As shown in Figure 2, described first tripping device comprises:
First inlet end, described first inlet end is the port that described waste gas enters described Ammonia recovery system.
First filter F 1, described first filter F 1 is connected with described first inlet end, for the solid particulate in waste gas described in filtering separation by ammonia pipeline.
First outlet side, described first outlet side is connected with described first filter F 1 by ammonia pipeline.
Wherein, ammonia pipeline between described first inlet end and the first filter F 1 is disposed with the first diaphragm valve G1, the first pneumavalve Q1 and the first tensimeter PG1, the ammonia pipeline between described first filter F 1 and the first outlet side is disposed with the second tensimeter PG2, the second pneumavalve Q2 and the second diaphragm valve G2.
Described first tripping device also comprises:
First logical plug gas inlet, described first logical plug gas inlet is connected with the first filter F 1 by ammonia pipeline, and the described first logical ammonia pipeline filled between gas inlet and described first filter F 1 is disposed with the 3rd pneumavalve Q3 and the second tensimeter PG2.
First logical plug pneumatic outlet, described first logical plug pneumatic outlet is connected with the first filter F 1 by ammonia pipeline, and the described first logical ammonia pipeline filled between pneumatic outlet and described first filter F 1 is disposed with the 4th pneumavalve Q4 and the first tensimeter PG1.
Owing to being provided with the first logical plug gas inlet and the first logical plug pneumatic outlet, so in time there is blocking in the ammonia pipeline in described first tripping device or the first filter F 1, the first pneumavalve Q1 and the second pneumavalve Q2 can be turned off, open the 3rd pneumavalve Q3 and the 4th pneumavalve Q4, high pressure gas (as drying nitrogen) are passed into, to dredge described first tripping device by the first logical plug gas inlet.
Described first tripping device also comprises:
Second filter F 2, described second filter F 2 is connected with described first inlet end by ammonia pipeline, and is connected with described first outlet side by ammonia pipeline.
Wherein, ammonia pipeline between described first inlet end and the second filter F 2 is disposed with the first diaphragm valve G1, the 5th pneumavalve Q5 and the 3rd tensimeter PG3, the ammonia pipeline between described second filter F 2 and the first outlet side is disposed with the 4th tensimeter PG4, the 6th pneumavalve Q6 and the 3rd diaphragm valve G3.
Described second filter F 2 logical fill in gas inlet by ammonia pipeline and described first and is connected, and described second filter F 2 and described first is led on the ammonia pipeline filled between gas inlet and is disposed with the 4th tensimeter PG4 and the 7th pneumavalve Q7;
Described second filter F 2 logical fill in pneumatic outlet by ammonia pipeline and described first and is connected, and described second filter F 2 and described first is led on the ammonia pipeline filled between pneumatic outlet and is disposed with the 3rd tensimeter PG3 and the 8th pneumavalve Q8.
Described second filter F 2 is reserve filter, namely when described first filter F 1 and associated conduit break down (as blocking) time, the first pneumavalve Q1 and the second pneumavalve Q2 can be turned off, open the 5th pneumavalve Q5 and the 6th pneumavalve Q6, described second filter F 2 works, namely a described filter F 1 and the second filter F 2 can alternations, to ensure the continuity of off gas treatment.
As shown in Figure 3, described second tripping device comprises:
Second inlet end, described second inlet end is connected with described first outlet side.
First heat exchanger H1, described first heat exchanger H1 is connected with described second inlet end by ammonia pipeline, for the water vapour in waste gas described in refrigerated separation and complex compound, and ammonia pipeline between described second inlet end and the first heat exchanger H1 is disposed with the 4th diaphragm valve G4, the 9th pneumavalve Q9 and the first pressure switch PS1.
Second outlet side, described second outlet side is connected with described first heat exchanger H1 by ammonia pipeline, and ammonia pipeline between described first heat exchanger H1 and the second outlet side is disposed with the second pressure switch PS2, the first Temperature displaying control unit TIC1, the 5th diaphragm valve G5, the tenth pneumavalve Q10 and the 6th diaphragm valve G6.
First cooling gas inlet, described first cooling gas inlet is connected with described first heat exchanger H1 by ammonia pipeline, and ammonia pipeline between described first cooling gas inlet and described first heat exchanger H1 is provided with the 11 pneumavalve Q11.
First cooling gas outlet, described first cooling gas outlet be connected with described first heat exchanger H1 by ammonia pipeline, and described first cooling gas export with described first heat exchanger H1 between ammonia pipeline on be provided with the 12 pneumavalve Q12.
First holding tank S1, described first holding tank S1 is provided with the 3rd pressure switch PS3, and described first holding tank S1 is connected with the second outlet side with described First Heat Exchanger H1 respectively by ammonia pipeline, ammonia pipeline between described first holding tank S1 and described first heat exchanger H1 is disposed with the 7th diaphragm valve G7, 13 pneumavalve Q13, first Temperature displaying control unit TIC1 and the second pressure switch PS2, ammonia pipeline between described first holding tank S1 and described second outlet side is disposed with the 8th diaphragm valve G8, 14 pneumavalve Q14, tenth pneumavalve Q10 and the 6th diaphragm valve G6.
By passing into cooling gas (as liquid nitrogen) to the first cooling gas inlet, and discharged by described first cooling gas outlet, described cooling gas can cool described waste gas, and the water vapour in described waste gas and complex compound condensation are in a liquid state, and is collected by the first holding tank S1.
Described second tripping device also comprises:
Second logical plug gas inlet, described second logical plug gas inlet is connected with described first heat exchanger H1 by ammonia pipeline, and the described second logical ammonia pipeline filled between gas inlet and the first heat exchanger H1 is disposed with the 9th diaphragm valve G9, the 5th diaphragm valve G5, the first Temperature displaying control unit TIC1 and the second pressure switch PS2.Owing to being provided with the second logical plug gas inlet, so in time there is blocking in the ammonia pipeline in described second tripping device or the first heat exchanger H1, the 4th diaphragm valve G4(or the 9th pneumavalve Q9 can be turned off) and the 6th diaphragm valve G6(or the tenth pneumavalve Q10), open the 9th diaphragm valve G9 and the 12 pneumavalve Q12, high pressure gas (as drying nitrogen) are passed into, to dredge described second tripping device by the first logical plug gas inlet.
First washer Sb1, described first washer Sb1 is connected with described first heat exchanger H1 by washing pipeline, and described first washer Sb1 is connected with described second inlet end by ammonia pipeline, the ammonia pipeline between described second inlet end and described first washer Sb1 is disposed with the tenth diaphragm valve G10 and the 15 pneumavalve Q15.Described first washer Sb1 is for cleaning described first holding tank S1.
Described second tripping device also comprises:
Second heat exchanger H2, described second heat exchanger H2 is exported with described second inlet end, the first cooling gas inlet, the first cooling gas respectively by ammonia pipeline, the second outlet side, second logical filled in gas inlet and is connected with the first washer Sb1;
Wherein, the ammonia pipeline between described second inlet end and the second heat exchanger H2 is disposed with the tenth diaphragm valve G10, the 15 pneumavalve Q15, the 4th pressure switch PS4, ammonia pipeline between described first cooling gas inlet and the second heat exchanger H2 is provided with the 18 pneumavalve Q18, ammonia pipeline between described first cooling gas outlet and the second heat exchanger H2 is provided with the 19 pneumavalve Q19, ammonia pipeline between described second outlet side and the second heat exchanger H2 is disposed with the 5th pressure switch PS5, second Temperature displaying control unit TIC2, 12 diaphragm valve G12, 17 pneumavalve Q17 and the 13 diaphragm valve G13, ammonia pipeline between described second logical plug gas inlet and the second heat exchanger H2 is disposed with the 14 diaphragm valve G14, 12 diaphragm valve G12, second Temperature displaying control unit TIC2 and the 5th pressure switch PS5.
Second holding tank S2, described second holding tank S2 is connected with the second outlet side with described second heat exchanger H2 respectively by ammonia pipeline;
Wherein, described second holding tank S2 is provided with the 6th pressure switch PS6, and ammonia pipeline between described second holding tank S2 and the second heat exchanger H2 is disposed with the 15 diaphragm valve G15, the 20 pneumavalve Q20, the second Temperature displaying control unit TIC2 and the 5th pressure switch PS5, the ammonia pipeline between described second holding tank S2 and the second outlet side is disposed with the 16 diaphragm valve G16, the 21 pneumavalve Q21, the 17 pneumavalve Q17 and the 13 diaphragm valve G13.
Described second heat exchanger H2 is heat exchanger for subsequent use, namely when described first heat exchanger H1 and associated conduit break down (as blocking) time, the 4th diaphragm valve G4(or the 9th pneumavalve Q9 can be turned off) 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 second heat exchanger H2 works, namely a described heat exchanger H1 and the second heat exchanger H2 can alternation, to ensure the continuity of off gas treatment.
As shown in Figure 4, described Ammonia recovery storing device comprises:
3rd inlet end, described 3rd inlet end is connected with described second outlet side.
First ammonia liquefying plant Y1, described first ammonia liquefying plant Y1 is connected with described 3rd inlet end by ammonia pipeline, be separated the ammonia in described waste gas for cooling liquid, and ammonia pipeline between described 3rd inlet end and the first ammonia liquefying plant Y1 is disposed with the 17 diaphragm valve G17, the 22 pneumavalve Q22 and the 7th pressure switch PS7.Described first ammonia liquefying plant Y1 comprises: the 3rd heat exchanger H3 and the 4th heat exchanger H4, described second cooling gas inlet is connected with described 3rd heat exchanger H3 by cooling air pipe, described second cooling gas outlet is connected with described 4th heat exchanger H4 by cooling air pipe, be connected with cooling air pipe by ammonia pipeline between described 3rd heat exchanger H3 and the 4th heat exchanger H4, and ammonia pipeline between described 3rd heat exchanger H3 and the 4th heat exchanger H4 is disposed with the tenth pressure switch PS10, one PT(PT1), 23 diaphragm valve G23 and the 11 pressure switch PS11.Heat exchanger in described first ammonia liquefying plant Y1 can also be more than one or three and three.
3rd outlet side, described 3rd outlet side is connected with described first ammonia liquefying plant Y1 by ammonia pipeline, and ammonia pipeline between described first ammonia liquefying plant Y1 and the 3rd outlet side is disposed with the 8th pressure switch PS8, the 3rd Temperature displaying control unit TIC3, the 18 diaphragm valve G18, the 23 pneumavalve Q23 and the 19 diaphragm valve G19.
Second cooling gas inlet, described second cooling gas inlet is connected with described first ammonia liquefying plant Y1 by cooling air pipe, and cooling air pipe between described second cooling gas inlet and the first ammonia liquefying plant Y1 is disposed with the 22 diaphragm valve G22 and the 24 pneumavalve Q24.Wherein, described ammonia pipeline is enclosed within described cooling air pipe, and described cooling gas is distributed in ammonia pipeline after entering in cooling air pipe by the second cooling gas inlet, but can not enter ammonia pipeline, just in described ammonia pipeline, form low temperature environment.
Second cooling gas outlet, described second cooling gas outlet is connected with described first ammonia liquefying plant Y1 by cooling air pipe.
First liquefied ammonia storage tank C1, described first liquefied ammonia storage tank C1 is provided with the 9th pressure switch PS9 and the first liquid level switch LS1, and described first liquefied ammonia storage tank C1 is connected with the 3rd outlet side with described first ammonia liquefying plant Y1 respectively by ammonia pipeline, ammonia pipeline between described first liquefied ammonia storage tank C1 and described first ammonia liquefying plant Y1 is disposed with the 20 diaphragm valve G20, 3rd Temperature displaying control unit TIC3 and the 8th pressure switch PS8, ammonia pipeline between described first liquefied ammonia storage tank Y1 and described 3rd outlet side is disposed with the 21 diaphragm valve G21, 23 pneumavalve Q23 and the 19 diaphragm valve G19.
Because the boiling point of ammonia is high compared with the boiling point of the gases such as the hydrogen in waste gas, nitrogen, so ammonia can first liquefy and be separated, the ammonia of post 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 first ammonia liquefying plant Y1 by ammonia pipeline, and ammonia pipeline between described threeway plug gas inlet and the first ammonia liquefying plant Y1 is disposed with the 24 diaphragm valve G24, the 18 diaphragm valve G18, the 3rd temperature controls display unit TIC3 and the 8th pressure switch PS8.
Threeway plug pneumatic outlet, described threeway plug pneumatic outlet is connected with described first ammonia liquefying plant Y1 by ammonia pipeline, and ammonia pipeline between described threeway plug pneumatic outlet and the first ammonia liquefying plant Y1 is provided with the 25 diaphragm valve G25.
Second washer Sb2, described second washer Sb2 are connected with described first ammonia storing device Y1, for cleaning described first ammonia storing device Y1 by washing pipeline.
Owing to being provided with threeway plug gas inlet and threeway plug pneumatic outlet, so in time there is blocking in described Ammonia recovery storing device or the first ammonia liquefying plant Y1, pipeline etc. wherein, the 23 pneumavalve Q23(or the 19 diaphragm valve G19 can be turned off) and the 22 pneumavalve Q22(or the 17 diaphragm valve G17), open the 24 diaphragm valve G24 and the 25 diaphragm valve G25, high pressure gas (as drying nitrogen) are passed into, to dredge described Ammonia recovery storing device by threeway plug gas inlet.
Described Ammonia recovery storing device also comprises:
Second ammonia liquefying plant Y2, described second ammonia liquefying plant Y2 is connected with threeway plug pneumatic outlet with described 3rd inlet end, the 3rd outlet side, threeway plug gas inlet respectively by ammonia pipeline, and described second ammonia liquefying plant Y2 is exported with the second cooling gas with the second cooling gas inlet respectively by cooling air pipe and is connected, described second ammonia liquefying plant Y2 is by being separated the ammonia in described waste gas for cooling liquid.
Wherein, ammonia pipeline described in described 3rd outlet side between the second ammonia liquefying plant Y2 is disposed with 26 diaphragm valve G26, 25 pneumavalve Q25 and the 12 pressure switch PS12, ammonia pipeline between described second ammonia liquefying plant Y2 and the 3rd outlet side is disposed with the 13 pressure switch PS13, 4th Temperature displaying control unit TIC3, 27 diaphragm valve G27, 26 pneumavalve Q26 and the 28 diaphragm valve G28, ammonia pipeline between described threeway plug gas inlet and described second ammonia liquefying plant Y2 is disposed with the 29 diaphragm valve G29, 27 diaphragm valve G27, 4th Temperature displaying control unit TIC4 and the 13 pressure switch PS13, ammonia pipeline between described threeway plug pneumatic outlet and described second ammonia liquefying plant Y2 is provided with the 30 diaphragm valve G30, cooling air pipe between described second cooling gas inlet and described second ammonia liquefying plant Y2 is disposed with the 31 diaphragm valve G31 and the 27 pneumavalve Q27.Described second ammonia liquefying plant Y2 comprises: the 4th heat exchanger H4 and the 5th heat exchanger H5, described second cooling gas inlet is connected with described 4th heat exchanger H4 by cooling air pipe, described second cooling gas outlet is connected with described 5th heat exchanger H5 by cooling air pipe, be connected with cooling air pipe by ammonia pipeline between described 4th heat exchanger H4 and the 5th heat exchanger H5, and ammonia pipeline between described 4th heat exchanger H4 and the 5th heat exchanger H5 is disposed with the 15 pressure switch PS15, 2nd PT(PT2), 34 diaphragm valve G34 and the 16 pressure switch PS16.
Second liquefied ammonia storage tank C2, described second liquefied ammonia storage tank C2 is provided with the 14 pressure switch P14 and the second liquid level switch LS2, and described second liquefied ammonia storage tank C2 is connected with the 3rd outlet side with described second ammonia liquefying plant Y2 respectively by ammonia pipeline.
Wherein, ammonia pipeline between described second liquefied ammonia storage tank C2 and described second ammonia liquefying plant Y2 is disposed with the 32 diaphragm valve G32, the 4th Temperature displaying control unit TIC4 and the 13 pressure switch PS13, the ammonia pipeline between described second liquefied ammonia storage tank C2 and described 3rd outlet side is disposed with the 33 diaphragm valve G33, the 26 pneumavalve Q26 and the 28 diaphragm valve G28.
3rd washer Sb3, described 3rd washer Sb3 are connected with described second ammonia storing device C2 by washing pipeline.
Described second ammonia liquefying plant Y2 is ammonia liquefying plant for subsequent use, namely when described first ammonia liquefying plant Y1 and associated conduit break down (as blocking) time, the 23 pneumavalve Q23(or the 19 diaphragm valve G19 can be turned off) and the 22 pneumavalve Q22(or the 17 diaphragm valve G17), open the 26 diaphragm valve G26, 25 pneumavalve Q25, 28 diaphragm valve G28 and the 26 pneumavalve Q26, described second ammonia liquefying plant Y2 works, namely described first ammonia liquefying plant Y1 and the second ammonia liquefying plant Y2 can alternation, to ensure the continuity of off gas treatment.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles 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 waste gas, water vapor and complex compound;
Ammonia recovery storing device, the ammonia of described Ammonia recovery storing device for liquefying in waste gas, and store liquefaction ammonia.
2. Ammonia recovery system according to claim 1, it is characterized in that, described pretreatment unit comprises:
First tripping device, described first tripping device is for separating of the solid particulate in described waste gas;
Second tripping device, described second tripping device is for separating of the water vapour in described waste gas and complex compound.
3. Ammonia recovery system according to claim 2, it is characterized in that, described first tripping device comprises:
First inlet end, described first inlet end is the port that described waste gas enters described Ammonia recovery system;
First strainer, described first strainer is connected with described first inlet end, for the solid particulate in waste gas described in filtering separation by ammonia pipeline;
First outlet side, described first outlet side is connected with described first strainer by ammonia pipeline;
Wherein, ammonia pipeline between described first inlet end and the first strainer is disposed with the first diaphragm valve, the first pneumavalve and the first tensimeter, the ammonia pipeline between described first strainer and the first outlet side is disposed with the second tensimeter, the second pneumavalve and the second diaphragm valve.
4. Ammonia recovery system according to claim 3, it is characterized in that, described first tripping device also comprises:
First leads to plug gas inlet, and the described first logical plug gas inlet is connected with the first strainer by ammonia pipeline, and the described first logical ammonia pipeline filled between gas inlet and described first strainer is disposed with the 3rd pneumavalve and the second tensimeter;
First leads to plug pneumatic outlet, and the described first logical plug pneumatic outlet is connected with the first strainer by ammonia pipeline, and the described first logical ammonia pipeline filled between pneumatic outlet and described first strainer is disposed with the 4th pneumavalve and the first tensimeter.
5. Ammonia recovery system according to claim 4, it is characterized in that, described first tripping device also comprises:
Second strainer, described second strainer is connected with described first inlet end by ammonia pipeline, and is connected with described first outlet side by ammonia pipeline;
Wherein, ammonia pipeline between described first inlet end and the second strainer is disposed with the first diaphragm valve, the 5th pneumavalve and the 3rd tensimeter, the ammonia pipeline between described second strainer and the first outlet side is disposed with the 4th tensimeter, the 6th pneumavalve and the 3rd diaphragm valve.
6. Ammonia recovery system according to claim 5, it is characterized in that, described second strainer logical fill in gas inlet by ammonia pipeline and described first and is connected, and described second strainer and described first leads on the ammonia pipeline filled between gas inlet and is disposed with the 4th tensimeter and the 7th pneumavalve;
Described second strainer logical fill in pneumatic outlet by ammonia pipeline and described first and is connected, and described second strainer and described first leads on the ammonia pipeline filled between pneumatic outlet and is disposed with the 3rd tensimeter and the 8th pneumavalve.
7. Ammonia recovery system according to claim 3, it is characterized in that, described second tripping device comprises:
Second inlet end, described second inlet end is connected with described first outlet side;
First heat exchanger, described first heat exchanger is connected with described second inlet end by ammonia pipeline, for the water vapour in waste gas described in refrigerated separation and complex compound, and ammonia pipeline between described second inlet end and the first heat exchanger is disposed with the 4th diaphragm valve, the 9th pneumavalve and the first pressure switch;
Second outlet side, described second outlet side is connected with described first heat exchanger by ammonia pipeline, and ammonia pipeline between described first heat exchanger and the second outlet side is disposed with the second pressure switch, the first Temperature displaying control unit, the 5th diaphragm valve, the tenth pneumavalve and the 6th diaphragm valve;
First cooling gas inlet, described first cooling gas inlet is connected with described first heat exchanger by ammonia pipeline, and ammonia pipeline between described first cooling gas inlet and described first heat exchanger is provided with the 11 pneumavalve;
First cooling gas outlet, described first cooling gas outlet be connected with described first heat exchanger by ammonia pipeline, and described first cooling gas export with described first heat exchanger between ammonia pipeline on be provided with the 12 pneumavalve;
First holding tank, described first holding tank is provided with the 3rd pressure switch, and described first holding tank is connected with the second outlet side with described First Heat Exchanger respectively by ammonia pipeline, ammonia pipeline between described first holding tank and described first heat exchanger is disposed with the 7th diaphragm valve, the 13 pneumavalve, the first Temperature displaying control unit and the second pressure switch, the ammonia pipeline between described first holding tank and described second outlet side is disposed with the 8th diaphragm valve, the 14 pneumavalve, the tenth pneumavalve and the 6th diaphragm valve.
8. Ammonia recovery system according to claim 7, it is characterized in that, described second tripping device also comprises:
Second logical plug gas inlet, described second logical plug gas inlet is connected with described first heat exchanger by ammonia pipeline, and the described second logical ammonia pipeline filled between gas inlet and the first heat exchanger is disposed with the 9th diaphragm valve, the 5th diaphragm valve, the first Temperature displaying control unit and the second pressure switch;
First washer, described first washer is connected with described first heat exchanger by washing pipeline, and described first washer is connected with described second inlet end by ammonia pipeline, the ammonia pipeline between described second inlet end and described first washer is disposed with the tenth diaphragm valve and the 15 pneumavalve.
9. Ammonia recovery system according to claim 8, it is characterized in that, described second tripping device also comprises:
Second heat exchanger, described second heat exchanger is exported with described second inlet end, the first cooling gas inlet, the first cooling gas respectively by ammonia pipeline, the second outlet side, second logical filled in gas inlet and is connected with the first washer;
Wherein, the ammonia pipeline between described second inlet end and the second heat exchanger is disposed with the 11 diaphragm valve, the 16 pneumavalve, the 4th pressure switch; Ammonia pipeline between described first cooling gas inlet and the second heat exchanger is provided with the 18 pneumavalve; Ammonia pipeline between described first cooling gas outlet and the second heat exchanger is provided with the 19 pneumavalve; Ammonia pipeline between described second outlet side and the second heat exchanger is disposed with the 5th pressure switch, the second Temperature displaying control unit, the 12 diaphragm valve, the 17 pneumavalve and the 13 diaphragm valve; Ammonia pipeline between described second logical plug gas inlet and the second heat exchanger is disposed with the 14 diaphragm valve, the 12 diaphragm valve, the second Temperature displaying control unit and the 5th pressure switch;
Second holding tank, described second holding tank is connected with the second outlet side with described second heat exchanger respectively by ammonia pipeline;
Wherein, described second holding tank is provided with the 6th pressure switch, and ammonia pipeline between described second holding tank and the second heat exchanger is disposed with the 15 diaphragm valve, the 20 pneumavalve, the second Temperature displaying control unit and the 5th pressure switch, the ammonia pipeline between described second holding tank and the second outlet side is disposed with the 16 diaphragm valve, the 21 pneumavalve, the 17 pneumavalve and the 13 diaphragm valve.
10. Ammonia recovery system according to claim 7, it is characterized in that, described Ammonia recovery storing device comprises:
3rd inlet end, described 3rd inlet end is connected with described second outlet side;
First ammonia liquefying plant, described first ammonia liquefying plant is connected with described 3rd inlet end by ammonia pipeline, be separated the ammonia in described waste gas for cooling liquid, and ammonia pipeline between described 3rd inlet end and the first ammonia liquefying plant is disposed with the 17 diaphragm valve, the 22 pneumavalve and the 7th pressure switch;
3rd outlet side, described 3rd outlet side is connected with described first ammonia liquefying plant by ammonia pipeline, and ammonia pipeline between described first ammonia liquefying plant and the 3rd outlet side is disposed with the 8th pressure switch, the 3rd Temperature displaying control unit, the 18 diaphragm valve, the 23 pneumavalve and the 19 diaphragm valve;
Second cooling gas inlet, described second cooling gas inlet is connected with described first ammonia liquefying plant by cooling air pipe, and cooling air pipe between described second cooling gas inlet and the first ammonia liquefying plant is disposed with the 22 diaphragm valve and the 24 pneumavalve;
Second cooling gas outlet, described second cooling gas outlet is connected with described first ammonia liquefying plant by cooling air pipe;
First liquefied ammonia storage tank, described first liquefied ammonia storage tank is provided with the 9th pressure switch and the first liquid level switch, and described first liquefied ammonia storage tank is connected with the 3rd outlet side with described first ammonia liquefying plant respectively by ammonia pipeline, ammonia pipeline between described first liquefied ammonia storage tank and described first ammonia liquefying plant is disposed with the 20 diaphragm valve, 3rd Temperature displaying control unit and the 8th pressure switch, ammonia pipeline between described first liquefied ammonia storage tank and described 3rd outlet side is disposed with the 21 diaphragm valve, 23 pneumavalve and the 19 diaphragm valve.
11. Ammonia recovery systems according to claim 10, it is characterized in that, described first ammonia liquefying plant comprises:
3rd heat exchanger and the 4th heat exchanger, described second cooling gas inlet is connected with described 3rd heat exchanger by cooling air pipe, described second cooling gas outlet is connected with described 4th heat exchanger by cooling air pipe, be connected with cooling air pipe by ammonia pipeline between described 3rd heat exchanger and the 4th heat exchanger, and ammonia pipeline between described 3rd heat exchanger and the 4th heat exchanger is disposed with the tenth pressure switch, a PT, the 23 diaphragm valve and the 11 pressure switch.
12., according to Ammonia recovery system described in 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 first ammonia liquefying plant by ammonia pipeline, and ammonia pipeline between described threeway plug gas inlet and the first ammonia liquefying plant is disposed with the 24 diaphragm valve, the 18 diaphragm valve, the 3rd temperature control display unit and the 8th pressure switch;
Threeway plug pneumatic outlet, described threeway plug pneumatic outlet is connected with described first ammonia liquefying plant by ammonia pipeline, and ammonia pipeline between described threeway plug pneumatic outlet and the first ammonia liquefying plant is provided with the 25 diaphragm valve;
Second washer, described second washer is connected with described first ammonia storing device by washing pipeline.
13., according to Ammonia recovery system described in claim 12, is characterized in that, described Ammonia recovery storing device also comprises:
Second ammonia liquefying plant, described second ammonia liquefying plant is connected with threeway plug pneumatic outlet with described 3rd inlet end, the 3rd outlet side, threeway plug gas inlet respectively by ammonia pipeline, and described second ammonia liquefying plant is exported with the second cooling gas with the second cooling gas inlet respectively by cooling air pipe and is connected, described second ammonia liquefying plant is by being separated the ammonia in described waste gas for cooling liquid;
Wherein, ammonia pipeline between described 3rd outlet side and described second ammonia liquefying plant is disposed with 26 diaphragm valves, 25 pneumavalve and the 12 pressure switch, ammonia pipeline between described second ammonia liquefying plant and the 3rd outlet side is disposed with the 13 pressure switch, 4th Temperature displaying control unit, 27 diaphragm valve, 26 pneumavalve and the 28 diaphragm valve, ammonia pipeline between described threeway plug gas inlet and described second ammonia liquefying plant is disposed with the 29 diaphragm valve, 27 diaphragm valve, 4th Temperature displaying control unit and the 13 pressure switch, ammonia pipeline between described threeway plug pneumatic outlet and described second ammonia liquefying plant is provided with the 30 diaphragm valve, cooling air pipe between described second cooling gas inlet and described second ammonia liquefying plant is disposed with the 31 diaphragm valve and the 27 pneumavalve,
Second liquefied ammonia storage tank, described second liquefied ammonia storage tank is provided with the 14 pressure switch and the second liquid level switch, and described second liquefied ammonia storage tank is connected with the 3rd outlet side with described second ammonia liquefying plant respectively by ammonia pipeline;
Wherein, ammonia pipeline between described second liquefied ammonia storage tank and described second ammonia liquefying plant is disposed with the 32 diaphragm valve, the 4th Temperature displaying control unit and the 13 pressure switch, the ammonia pipeline between described second liquefied ammonia storage tank and described 3rd outlet side is disposed with the 33 diaphragm valve, the 26 pneumavalve and the 28 diaphragm valve;
3rd washer, described 3rd washer is connected with described second ammonia storing device by washing pipeline.
14., according to Ammonia recovery system described in claim 13, is characterized in that, described second ammonia liquefying plant comprises:
4th heat exchanger and the 5th heat exchanger, described second cooling gas inlet is connected with described 4th heat exchanger by cooling air pipe, described second cooling gas outlet is connected with described 5th heat exchanger by cooling air pipe, be connected with cooling air pipe by ammonia pipeline between described 4th heat exchanger and the 5th heat exchanger, and ammonia pipeline between described 4th heat exchanger and the 5th heat exchanger is disposed with the 15 pressure switch, the 2nd PT, the 34 diaphragm valve and the 16 pressure switch.
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| CN103673505B (en) * | 2013-11-15 | 2016-03-02 | 苏州金宏气体股份有限公司 | The method of the on-the-spot recycling of the useless ammonia of discharge during a kind of LED produces |
| WO2017065925A1 (en) * | 2015-10-16 | 2017-04-20 | Sabic Global Technologies B.V. | Liquid-phase absorption process for the recovery of ammonia from a mixed gas stream |
| CN109759412B (en) * | 2019-02-28 | 2020-11-06 | 北京真空电子科技有限公司 | Recovery device |
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