KR101684296B1 - Continuous ammonia recovery system using the sequential type - Google Patents

Continuous ammonia recovery system using the sequential type Download PDF

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Publication number
KR101684296B1
KR101684296B1 KR1020150170447A KR20150170447A KR101684296B1 KR 101684296 B1 KR101684296 B1 KR 101684296B1 KR 1020150170447 A KR1020150170447 A KR 1020150170447A KR 20150170447 A KR20150170447 A KR 20150170447A KR 101684296 B1 KR101684296 B1 KR 101684296B1
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South Korea
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ammonia
adsorption
mixed gas
gas
adsorption tower
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KR1020150170447A
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Korean (ko)
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김신동
김나은
서영주
곽진호
박준우
박성순
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주식회사 이앤켐솔루션
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    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01C—AMMONIA; CYANOGEN; COMPOUNDS THEREOF
    • C01C1/00—Ammonia; Compounds thereof
    • C01C1/02—Preparation, purification or separation of ammonia
    • C01C1/10—Separation of ammonia from ammonia liquors, e.g. gas liquors
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01C—AMMONIA; CYANOGEN; COMPOUNDS THEREOF
    • C01C1/00—Ammonia; Compounds thereof
    • C01C1/02—Preparation, purification or separation of ammonia
    • C01C1/024—Purification

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  • Organic Chemistry (AREA)
  • Analytical Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Treating Waste Gases (AREA)

Abstract

The present invention relates to a continuous ammonia recovery system in which an adsorption tower for adsorbing ammonia is installed in parallel in a mixed gas containing ammonia, a mixed gas is continuously supplied, and ammonia is continuously recovered.
The present invention relates to an exhaust gas purifying apparatus comprising a first adsorption tower 10, a second adsorption tower 20, a mixed gas storage tank 30, a mixed gas inlet pipe 40, an exhaust gas treating member 50, an ammonia storage tank 60, 70, a pH-confirming member 80, a heating medium supplying device 90, a heating medium circulating pipe 100, a vacuum pump 110, a pressure confirming member 120, a flow rate confirming member 140, .

Figure R1020150170447

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a continuous ammonia recovery system,

The present invention relates to a continuous ammonia recovery system in which an adsorption tower for adsorbing ammonia is installed in parallel in a mixed gas containing ammonia, a mixed gas is continuously supplied, and ammonia is continuously recovered.

Generally, high purity ammonia of 99.99999% (7N or less) is used as ammonia used as a special gas for semiconductors and LEDs. Demand is increasing exponentially due to development of semiconductor and LED industry. High purity ammonia (NH 3 ) continues to be developed for the development and production increase in domestic and overseas depending on the development of semiconductor and LED industry.

On the other hand, ammonia is generated in a large amount in wastewater such as food, livestock waste, and the like. However, in treating such ammonia wastewater, high-concentration ammonia nitrogen-containing wastewater is mainly treated by the ammonia stripping method, and low-concentration ammonia nitrogen-containing wastewater is generally treated mainly by biological nitrification-denitrification.

In order to treat high-concentration ammonia-nitrogen-containing wastewater, conventionally, a deaerating tank is filled with a filling material, the wastewater is sprayed by a spray nozzle from the top, and the ammonia nitrogen contained in the wastewater is deaerated while passing through a deaerating packing tower. Was absorbed while passing through a packed bed for absorption of an absorption tower containing an absorption liquid such as H 2 SO 4 .

However, in order to recover ammonia directly from wastewater, there is a problem that the initial facility investment cost is high and maintenance cost such as power for operation is increased. Further, there is a problem that only high purity ammonia can not be recovered.

SUMMARY OF THE INVENTION An object of the present invention is to provide an ammonia continuous recovery system using a sequential system in which an adsorption column for adsorbing ammonia in a mixed gas containing ammonia is provided in parallel and a mixed gas is continuously supplied and ammonia can be continuously recovered .

Another object of the present invention is to provide a continuous ammonia recovery system using a sequential system capable of controlling the supply direction of a mixed gas by confirming whether ammonia is contained in exhaust gas discharged from an adsorption tower.

Another object of the present invention is to provide a method for continuously supplying a mixed gas fed to one adsorption column by adjusting the desorption time of ammonia discharged from the other adsorption tower to be sucked and deaerated continuously To provide a continuous ammonia recovery system.

The continuous ammonia recovery system using the sequential system according to an embodiment of the present invention includes an ammonia adsorbent, an inlet formed at the lower end thereof, a discharge port formed at the upper end thereof, and a heat medium flow tube through which the heated high- First and second adsorption columns (10, 20); A mixed gas storage tank 30 for receiving and storing a mixed gas containing ammonia extracted from wastewater; And the other end is branched and connected to the inlet formed at the lower end of the first and second adsorption towers 10 and 20 and the first distributing valve 41 is formed in the distributing mechanism A mixed gas inlet pipe (40); An exhaust gas treating member 50 provided with an exhaust gas discharged through upper portions of the first and second adsorption towers 10 and 20; An ammonia storage tank 60 for receiving and storing the ammonia which is absorbed and discharged after being absorbed by the adsorbent of the first and second adsorption towers 10 and 20; A first gas exhaust pipe 71 connected to an upper portion of the first adsorption tower 10 by an ammonia storage tank 60 and an exhaust gas treatment member 50 and an ammonia storage tank 60 and a second adsorption tower 60 disposed above the second adsorption tower 20, And a second gas discharge pipe 75 connected to the exhaust gas treating member 50. The second gas discharge pipe 72 is formed in the branch of the first gas discharge pipe 71, A gas discharge pipe 70 having a third distribution valve 76 formed therein; A pH-confirming member (80) for confirming the pH of the gas discharged from the first and second adsorption towers (10, 20); A heat medium supply device 90 connected to the heat medium flow tubes of the first and second adsorption towers 10 and 20 to supply a high temperature heat medium; A first circulation pipe 101 which is connected at one end to the inlet side of the flow tube of the first and second adsorption columns 10 and 20 and at the other end to the outlet side of the heat medium supply device 90, And a second circulation pipe (102) branched and connected to the outlet side of the flow tube of the first and second adsorption columns (10,20) and the other end connected to the inlet side of the heat medium supply device (90) (100) having a fourth distribution valve (103) formed in a branching mechanism of the heat exchanger (101); A first distribution valve control unit 151 for controlling a first distribution valve 41 for distributing the mixed gas to be supplied to the lower end of the first adsorption tower 10 or the second adsorption tower 20, Third and fourth distribution valves 72 and 76 for distributing the gas discharged to the upper end of the second adsorption column to be supplied to the exhaust gas treatment member 50 or the ammonia storage tank 60 A fourth distribution valve control unit 154 for controlling the fourth distribution valve 103 so that the heating medium heated by the heating medium supply unit 90 is supplied to the first adsorption tower 10 or the second adsorption tower 20, and a switching signal generator (156) for generating a switching signal when the measured value of the pH measured by the pH checking member (80) is increased to a basicity more than a reference value.

The control member 150 preferably further includes a vacuum pump 110 connected to the first and second adsorption columns 10 and 20 to reduce the pressure inside the first adsorption column 10 or the second adsorption column 20 The vacuum pump operating portion 155 controls the operation of the vacuum pump 110 so that the interior of the vacuum pump 110 is depressurized.

The control member 150 preferably further comprises a pressure confirming member 120 for confirming the pressure of gas discharged from the first and second adsorption columns 10 and 20, And a termination signal generator 157 for generating a termination signal when the pressure is lower than the reference level.

Preferably, the control member 150 further comprises a mixed gas flow rate regulator 158 for regulating the flow rate of the mixed gas discharged from the mixed gas storage tank 30 such that the cycle of the switching signal coincides with the period of the termination signal .

Preferably, the exhaust gas treating member 50 is provided to the mixed gas storage tank 30 so that the provided exhaust gas can be filtered and discharged to the outside or reused.

Preferably, the apparatus further comprises a flow rate confirmation member 140 for confirming the flow rate of the gas discharged from the first and second adsorption towers 10, 20.

The continuous ammonia recovery system using the sequential system according to an embodiment of the present invention is a system in which ammonia is continuously supplied by continuously supplying an adsorption column for adsorbing ammonia in a mixed gas containing ammonia, There are advantages.

In addition, it is possible to accurately control the supply direction of the mixed gas by checking whether ammonia is contained in the exhaust gas discharged from the adsorption tower.

In addition, the supply rate of the mixed gas supplied to one adsorption tower is adjusted to the desorption time of the ammonia discharged from the other adsorption tower, so that the adsorption and deaeration of ammonia can be continuously performed.

1 is a schematic diagram of a continuous ammonia recovery system using a sequential system in accordance with the present invention;
2 is a block diagram of a control apparatus according to the present invention;

Hereinafter, an ammonia continuous recovery system using a sequential system according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

As shown in the figure, the present invention is characterized in that the first adsorption tower 10, the second adsorption tower 20, the mixed gas storage tank 30, the mixed gas inlet pipe 40, the flue gas treating member 50, the ammonia storage tank 60 A gas discharge pipe 70, a pH check member 80, a heating medium supply device 90, a heating medium circulation pipe 100, a vacuum pump 110, a pressure confirming member 120, a temperature confirming member 130, A confirmation member 140, and a control member 150. [

The first and second adsorption towers 10 and 20 are filled with an ammonia adsorbent, an inlet is formed at the lower end thereof, an outlet is formed at the upper end thereof, and a heat medium flow tube through which the heated and heated heat medium flows is formed.

The mixed gas storage tank 30 receives and stores a mixed gas containing ammonia extracted from wastewater. The mixed gas stored in the mixed gas storage tank 30 is supplied to the lower ends of the first and second adsorption towers 10 and 20.

The mixed gas inlet pipe 40 is connected at one end to the mixed gas storage tank 30 and at the other end to the inlet port formed at the lower end of the first and second adsorption towers 10 and 20. The first distribution valve 41 is formed in the branching mechanism of the mixed gas inflow pipe 40 branched to the first and second adsorption towers 10 and 20.

The exhaust gas treating member 50 is provided with an exhaust gas discharged through the upper portion of the first and second adsorption towers 10, 20. At this time, the exhaust gas treating member 50 may be provided to the mixed gas storage tank 30 so that the provided exhaust gas may be filtered and discharged to the outside or reused.

The ammonia storage tank 60 receives and stores the ammonia which is absorbed by the adsorbent of the first and second adsorption towers 10 and 20 and then discharged.

The other end of the gas discharge pipe 70 is connected to the outlet of the first and second adsorption towers 10 and 20 and the other end of the gas is branched to the ammonia storage tank 60 and the exhaust gas treatment member 50, do. A first gas exhaust pipe 71 connected to the ammonia storage tank 60 and the exhaust gas treatment member 50 is formed on the upper portion of the first adsorption tower 10 and an ammonia storage tank 60 And a second gas exhaust pipe 75 connected to the exhaust gas treating member 50 are formed. At this time, the second distributing valve 72 is formed in the distributing mechanism of the first gas discharging pipe 71, and the third distributing valve 76 is formed in the distributing mechanism of the second gas discharging pipe 75.

The pH-confirming member 80 confirms the pH of the gas discharged from the first and second adsorption columns 10 and 20. A first pH-confirming member 81 is formed on the upper portion of the first adsorption column 10 and a second pH-confirming member 82 is formed on the upper portion of the second adsorption column 20. [ The first and second pH-confirming members 81 and 82 are connected to the first and second gas discharge pipes 71 and 75 to supply a part of the gas discharged from the first and second gas discharge pipes 71 and 75, . At this time, when the gas discharged from each adsorption tower is detected as basic by the first and second pH-confirming members 81 and 82, it can be confirmed that ammonia is contained in the exhaust gas.

The heating medium supply device 90 is connected to the heat medium flow tubes of the first and second adsorption towers 10 and 20 to supply a high-temperature heat medium. The inside of the adsorption column is heated by the high-temperature heat medium supplied through the heating medium supply device 90, so that the ammonia adsorbed by the adsorbent can be easily broken.

The heat medium circulation pipe 100 is connected to a first circulation pipe (not shown) connected at one end to the inlet side of the flow tubes of the first and second adsorption towers 10 and 20 and at the other end to the outlet side of the heat medium supply device 90 (101), a second circulation pipe (102) branched at one end to the outlet side of the flow tubes of the first and second adsorption towers (10, 20) and connected at the other end to the inlet side of the heat medium supply device . At this time, the fourth distribution valve 103 is formed in the branching mechanism of the first circulation pipe 101.

The vacuum pump 110 reduces the pressure inside the first and second adsorption columns 10 and 20. With this vacuum pump 110, ammonia adsorbed on the adsorbent can be easily broken. The vacuum pump 110 is connected to the gas discharge pipe 70 connected to the ammonia storage tank 60.

The pressure confirming member 120 confirms the pressure of the gas discharged from the first and second adsorption towers 10 and 20. A first pressure measuring member 121 is formed on the upper part of the first adsorption tower 10 and a second pressure measuring member 122 is formed on the upper part of the second adsorption tower 20. The first and second pressure measurement members 121 and 122 are connected to the first and second gas discharge pipes 71 and 75 to check the pressure of gas discharged from the first and second gas discharge pipes 71 and 75, If it is below this criterion, it can be confirmed that the breakage of ammonia is completed in the adsorption tower.

The temperature confirming member 130 confirms the internal temperature of the first and second adsorption towers 10 and 20. A first temperature measuring member 131 is formed on the first adsorption tower 10 and a second temperature measurement member 132 is formed on the second adsorption tower 20. [ When the internal temperatures of the first and second adsorption towers 10 and 20 are confirmed by the first and second temperature measuring members 131 and 132, the temperature of the heating medium supplied from the heating medium supplying device 90, which is necessary for the appearance of ammonia, .

The flow velocity confirming member 140 confirms the flow rate of the gas discharged from the first and second adsorption towers 10 and 20. A first flow rate confirmation member 141 is formed on the upper portion of the first adsorption tower 10 and a second flow rate confirmation member 142 is formed on the upper portion of the second adsorption tower 20. The first and second flow rate confirmation members 141 and 142 are connected to the first and second gas discharge pipes 71 and 75 so that the user can confirm the flow rate of the gas discharged from the first and second gas discharge pipes 71 and 75 .

The control member 150 includes a first distribution valve control unit 151 for controlling the first distribution valve 41 for distributing the mixed gas to the lower end of the first adsorption tower 10 or the second adsorption tower 20, 1 for controlling the second and third distribution valves 72 and 76 for distributing the gas discharged to the top of the first adsorption column 10 or the second adsorption column to be supplied to the exhaust gas treatment member 50 or the ammonia storage tank 60, A fourth distribution valve 103 for controlling the fourth distribution valve 103 so that the heating medium heated by the heating medium supply device 90 is supplied to the first adsorption tower 10 or the second adsorption tower 20, A vacuum pump operating part 155 for controlling the operation of the vacuum pump 110 so that the interior of the valve control part 154, the first adsorption column 10 or the second adsorption column 20 is depressurized, 81, and 82, a switching signal generator 156 for generating a switching signal when the measured value of the pH measured by the first and second pressure sensors is increased to a basicity equal to or higher than a reference value, An end signal generating unit 157 for generating an end signal when the pressure measured by the members 121 and 122 is a pressure lower than the reference pressure, And a mixed gas flow rate regulator 158 for regulating the flow rate of the mixed gas.

Hereinafter, the operation and effect of the continuous ammonia recovery system using the sequential system according to the embodiment of the present invention will be described.

The first distribution valve control unit 151 of the control member 150 controls the first distribution valve 15 of the mixed gas inlet pipe 40 such that the mixed gas of the mixed gas storage tank 30 is supplied only to the first adsorption tower 10, The second distribution valve control unit 152 controls the second distribution valve 72 of the first gas discharge pipe 71 so that the exhaust gas discharged from the first adsorption tower 10 is supplied only to the exhaust gas treatment member 50, ). Accordingly, the mixed gas is supplied only to the first adsorption tower 10, and is not supplied to the second adsorption tower 20.

Thereafter, when the mixed gas of the mixed gas storage tank 30 is supplied to the lower end of the first adsorption tower 10, ammonia contained in the mixed gas is adsorbed and removed from the adsorbent located inside the first adsorption tower 10, The residual gas from which the ammonia has been removed is discharged to the exhaust gas treating member 50 through the first gas exhaust pipe 71 connected to the upper end of the first adsorption tower 10.

In the first pH check member 81, the pH value of the exhaust gas discharged to the upper end of the first adsorption column 10 is checked, and the switching signal generating unit 156 of the control member 150 detects the pH value of the exhaust gas Or more, a switching signal is generated. That is, since the pH value of the exhaust gas is neutralized while ammonia is adsorbed in the adsorbent in the first adsorption tower 10, if the pH value changes to basic, the adsorption of ammonia in the first adsorption tower 10 is saturated .

The first distribution valve control unit 151 controls the first distribution valve 41 of the mixed gas inlet pipe 40 so that the mixed gas of the mixed gas storage tank 30 is supplied only to the second adsorption tower 20. [ And the second distribution valve control unit 152 operates the second distribution valve 72 of the first gas discharge pipe 71 so that the upper end of the first adsorption tower 10 is connected to the ammonia storage tank 60. In addition, the third distribution valve control unit 153 operates the third distribution valve 76 of the second gas discharge pipe 75. The fourth distribution valve control unit 154 arranges the heating medium circulation pipe 100 so that the heating medium generated in the heating medium feeding device 90 can be supplied only to the first adsorption tower 10 and the vacuum pump operating unit 155 Operates the vacuum pump 110 so that the interior of the first adsorption column 10 is depressurized.

Thus, the mixed gas is supplied only to the second adsorption tower 20 without being supplied to the first adsorption tower 10, and ammonia contained in the mixed gas is adsorbed to the adsorbent located inside the second adsorption tower 20 And the residual gas from which ammonia has been removed is discharged to the exhaust gas treating member 50 through the second gas exhaust pipe 75 connected to the upper end of the second adsorption column. The second pH check member 82 confirms the pH value of the exhaust gas discharged to the upper end of the second adsorption tower 20. The switch signal generator 156 of the control member 150 checks the pH value of the exhaust gas Or more, a switching signal is generated.

On the other hand, when the internal pressure is lowered by the vacuum pump 110 as the heating medium is supplied to the first adsorption column 10, the ammonia adsorbed on the adsorbent is deaerated and connected to the upper end of the first adsorption column 10 And is discharged to the ammonia storage tank (60) through the first gas discharge pipe (71). The end signal generator 157 of the control member 150 checks the pressure value of the exhaust gas discharged from the first and second pressure measuring members 121 and 122 to the upper end of the first adsorption column 10, If the pressure is lower than the reference pressure, a termination signal is generated. By this termination signal, it can be confirmed that the ammonia adsorbed to the first adsorption column 10 is exhausted.

The fourth distribution valve control unit 154 cuts off the heating medium supplied to the first adsorption tower 10 from the heating medium supply unit 90 and the vacuum pump operating unit 155 operates the operation of the vacuum pump 110 .

The first distribution valve control unit 151 of the control member 150 supplies only the mixed gas of the mixed gas storage tank 30 to the first adsorption tower 10 so that ammonia can be adsorbed by the first adsorption tower 10 And the second distribution valve control unit 152 controls the first distribution valve 41 so that the exhaust gas discharged from the first adsorption tower 10 is supplied only to the exhaust gas treatment member 50 And the second distribution valve 72 of the first gas discharge pipe 71 is operated.

Through this process, when two or more adsorption towers are installed in parallel, while the mixed gas is supplied to one adsorption tower while ammonia is adsorbed, the other adsorption tower can discharge and store ammonia adsorbed therein. Particularly, when the flow rate of the mixed gas discharged from the mixed gas storage tank 30 is adjusted through the mixed gas flow rate control unit 158 so that the cycle of the switching signal coincides with the period of the termination signal, It is possible to sequentially recover the gas while supplying the gas.

It will be understood by those skilled in the art that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. It is to be understood, therefore, that the embodiments described above are to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, All changes or modifications that come within the scope of the equivalent concept are to be construed as being included within the scope of the present invention.

10: first adsorption tower 20: second adsorption tower
30: Mixed gas storage tank 40: Mixed gas inlet pipe
50: exhaust gas treatment member 60: ammonia storage tank
70: gas discharge pipe 80: pH check member
90: Heating medium supply device 100: Heat medium circulation tube
110: Vacuum pump 120: Pressure confirmation member
140: flow velocity confirming member 150: control member

Claims (6)

First and second adsorption towers (10, 20) in which an ammonia adsorbent is filled therein, an inlet is formed at a lower end thereof, an outlet is formed at an upper end thereof, and a heat medium flow tube through which heated high temperature heat medium flows is formed;
A mixed gas storage tank 30 for receiving and storing a mixed gas containing ammonia extracted from wastewater;
And the other end is branched and connected to the inlet formed at the lower end of the first and second adsorption towers 10 and 20 and the first distributing valve 41 is formed in the distributing mechanism A mixed gas inlet pipe (40);
An exhaust gas treating member 50 provided with an exhaust gas discharged through upper portions of the first and second adsorption towers 10 and 20;
An ammonia storage tank 60 for receiving and storing the ammonia which is absorbed and discharged after being absorbed by the adsorbent of the first and second adsorption towers 10 and 20;
A first gas exhaust pipe 71 connected to an upper portion of the first adsorption tower 10 by an ammonia storage tank 60 and an exhaust gas treatment member 50 and an ammonia storage tank 60 and a second adsorption tower 60 disposed above the second adsorption tower 20, And a second gas discharge pipe 75 connected to the exhaust gas treating member 50. The second gas discharge pipe 72 is formed in the branch of the first gas discharge pipe 71, A gas discharge pipe 70 having a third distribution valve 76 formed therein;
A pH-confirming member (80) for confirming the pH of the gas discharged from the first and second adsorption towers (10, 20);
A heating medium supply device 90 connected to the heat medium flow tubes of the first and second adsorption towers 10 and 20 to supply a high temperature heating medium;
A first circulation pipe 101 which is connected at one end to the inlet side of the flow tube of the first and second adsorption columns 10 and 20 and at the other end to the outlet side of the heat medium supply device 90, And a second circulation pipe (102) branched and connected to the outlet side of the flow tube of the first and second adsorption columns (10,20) and the other end connected to the inlet side of the heat medium supply device (90) (100) having a fourth distribution valve (103) formed in a branching mechanism of the heat exchanger (101);
A first distribution valve control unit 151 for controlling a first distribution valve 41 for distributing the mixed gas to be supplied to the lower end of the first adsorption tower 10 or the second adsorption tower 20, Third and fourth distribution valves 72 and 76 for distributing the gas discharged to the upper end of the second adsorption column to be supplied to the exhaust gas treatment member 50 or the ammonia storage tank 60 A fourth distribution valve control unit 154 for controlling the fourth distribution valve 103 so that the heating medium heated by the heating medium supply unit 90 is supplied to the first adsorption tower 10 or the second adsorption tower 20, and a switching member (156) for generating a switching signal when the measured value of pH measured by the pH-checking member (80) is increased to a basicity of more than a reference value. Continuous ammonia recovery system. The apparatus according to claim 1, further comprising a vacuum pump (110) connected to the first and second adsorption towers (10, 20) to reduce the pressure inside the first adsorption tower (10, 20) Further comprising a vacuum pump operating part (155) for controlling the operation of the vacuum pump (110) so that the interior of the vacuum pump (20) is depressurized. The apparatus according to claim 2, further comprising a pressure confirming member (120) for confirming the pressure of the gas discharged from the first and second adsorption columns (10, 20), wherein the control member (150) And an end signal generator (157) for generating an end signal when the pressure is below the reference pressure. The control member 150 may further include a mixed gas flow rate regulator 158 for regulating the flow rate of the mixed gas discharged from the mixed gas storage tank 30 so that the period of the switching signal coincides with the period of the termination signal Wherein the ammonia continuous recovery system is a continuous ammonia recovery system. The continuous ammonia recovery system according to claim 1, wherein the exhaust gas treating member (50) is provided to the mixed gas storage tank (30) so that the provided exhaust gas is filtered and discharged to the outside or reused. The continuous ammonia recovery system according to claim 1, further comprising a flow rate confirmation member (140) for confirming the flow rate of the gas discharged from the first and second adsorption towers (10, 20).
KR1020150170447A 2015-12-02 2015-12-02 Continuous ammonia recovery system using the sequential type KR101684296B1 (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107601552A (en) * 2017-10-31 2018-01-19 四川锌鸿科技有限公司 One kind inhales ammonia device
CN109550362A (en) * 2017-09-27 2019-04-02 西安天鑫利环保科技有限公司 A kind of exhaust treatment system and its waste gas processing method
CN112499710A (en) * 2020-10-20 2021-03-16 阮氏化工（常熟）有限公司 Device and method for purifying ammonia water by using ammonia-containing wastewater

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR930007806A (en) * 1991-10-23 1993-05-20 이시이 야스노 스케 Separation method of CO gas not containing CH_4
JPH07213858A (en) * 1994-02-09 1995-08-15 Mitsubishi Heavy Ind Ltd Gas treating device
KR20000062180A (en) * 1999-03-10 2000-10-25 야마자키로이치 Process and apparatus for recovering ammonia
JP2005313099A (en) * 2004-04-30 2005-11-10 Babcock Hitachi Kk Method for treating water to be treated containing ammonia

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR930007806A (en) * 1991-10-23 1993-05-20 이시이 야스노 스케 Separation method of CO gas not containing CH_4
JPH07213858A (en) * 1994-02-09 1995-08-15 Mitsubishi Heavy Ind Ltd Gas treating device
KR20000062180A (en) * 1999-03-10 2000-10-25 야마자키로이치 Process and apparatus for recovering ammonia
JP2005313099A (en) * 2004-04-30 2005-11-10 Babcock Hitachi Kk Method for treating water to be treated containing ammonia

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109550362A (en) * 2017-09-27 2019-04-02 西安天鑫利环保科技有限公司 A kind of exhaust treatment system and its waste gas processing method
CN107601552A (en) * 2017-10-31 2018-01-19 四川锌鸿科技有限公司 One kind inhales ammonia device
CN112499710A (en) * 2020-10-20 2021-03-16 阮氏化工（常熟）有限公司 Device and method for purifying ammonia water by using ammonia-containing wastewater

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