CN208465560U - Ammonia absorbs and purification device in a kind of aluminium ash treatment process - Google Patents
Ammonia absorbs and purification device in a kind of aluminium ash treatment process Download PDFInfo
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- CN208465560U CN208465560U CN201821102811.2U CN201821102811U CN208465560U CN 208465560 U CN208465560 U CN 208465560U CN 201821102811 U CN201821102811 U CN 201821102811U CN 208465560 U CN208465560 U CN 208465560U
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Abstract
The utility model discloses ammonia absorption and purification devices in a kind of aluminium ash treatment process, including level-one cooling absorption tower, two-level absorption tower and deduster, level-one cooling absorption tower is connected with deduster and two-level absorption tower respectively, the inlet end of deduster is connected with mixed gas air inlet pipe, the packing layer of two-level absorption tower inner cavity has two layers or more, the water supplying pipe that No. two bottom spraying mechanisms being used cooperatively in two-level absorption tower with lowest level packing layer are arranged in is pumped by No.1 ammonia circulation to be connected with the weak aqua ammonia discharge pipe of two-level absorption tower, the water supplying pipe that No. two upper layer spraying mechanisms being used cooperatively in two-level absorption tower inner cavity with other packing layers are arranged in then is connected with clear water water supply network, the feed cistern for the No.1 spraying mechanism that the weak aqua ammonia of two-level absorption tower is cooled down in absorption tower by coupling tube level-one is connected, the middle part of the water supplying pipe of No.1 spraying mechanism It is pumped equipped with No. two ammonia circulations.After the mixed gas for solving prior art separation ammonia and hydrogen, the high problem of ammonia level in mixed gas.
Description
Technical field
The utility model relates to ammonia absorption cleaning apparatus fields, and in particular to ammonia absorbs in a kind of aluminium ash treatment process
With purification device.
Background technique
In existing Chemical Manufacture, the mixed gas of ammonia and hydrogen can be usually generated, it can not be straight after ammonia and hydrogen mixing
Utilization is connect, separated and then is utilized again after being separately recovered, process is carried out separation and recycling to ammonia and hydrogen
In, it should be noted that safety, the separator of existing ammonia and hydrogen gas mixture are mainly absorption tower, but existing Chemical Manufacture
In, after being handled with absorption tower mixed gas, the concentration of ammonia still can be in higher state, ammonia in mixed gas
Assimilation effect is bad, and the packing layer service life in absorption tower is short, is not easy to replace.
Utility model content
It is absorbed the purpose of this utility model is to provide ammonia in a kind of aluminium ash treatment process and purification device, solution is existing
After the mixed gas for separating ammonia and hydrogen in technology, the high problem of ammonia level in mixed gas.
In order to solve the above technical problems, the utility model uses following technical scheme:
Ammonia absorbs and purification device in a kind of aluminium ash treatment process, including level-one cooling absorption tower, two-level absorption tower and
Deduster, the air inlet and exhaust outlet on level-one cooling absorption tower are inhaled with the outlet side of deduster and second level respectively by pipeline
The air inlet for receiving tower is connected, and the inlet end of deduster is connected with mixed gas air inlet pipe, and the packing layer of two-level absorption tower inner cavity has
Two layers or more, it is that No. two bottoms spray that two-level absorption tower inner cavity lower part, which is arranged in, with the spraying mechanism that lowest level packing layer is used cooperatively
Drench mechanism, the weak aqua ammonia that the water inlet end of the water supplying pipe of No. two bottom spraying mechanisms passes through No.1 ammonia circulation pump and two-level absorption tower
Discharge pipe is connected, and it is No. two upper layer sprays that the spraying mechanism being used cooperatively in two-level absorption tower inner cavity with other packing layers, which is arranged in,
Mechanism, the water supplying pipe of No. two upper layer spraying mechanisms are then connected with clear water water supply network, and the weak aqua ammonia discharge pipe of two-level absorption tower is also
It is connected by coupling tube with the feed cistern for the No.1 spraying mechanism that level-one cooling absorption tower inner cavity is arranged in, No.1 spraying mechanism
Feed cistern is connected by the water supplying pipe of No.1 spraying mechanism with No.1 spraying mechanism, is set in the middle part of the water supplying pipe of No.1 spraying mechanism
There are No. two ammonia circulation pumps.
Provided with deduster, dedusting is carried out to the mixed gas for entering level-one cooling absorption tower, has made to enter level-one cooling
The particulate matter contained in gas in absorption tower is less, can effectively extend the service life of packing layer in this way, then passes through one
Grade cooling absorption tower and two-level absorption tower separate twice, and the content of the ammonia in gas gas after separating is lower, ammonia and hydrogen
Separation more thoroughly, the level-one absorption tower that cools down carries out the washing of first time to mixed gas, and the weak aqua ammonia being washed out is from one
The ammonium hydroxide outlet on number cooling absorption tower is discharged into the feed cistern of No.1 spraying mechanism, carries out circulation sprinkling, to entering level-one
The mixed gas on cooling absorption tower is washed, and the mixed gas after level-one cooling absorption tower washing is from two-level absorption tower
Enter two-level absorption tower at air inlet, the weak aqua ammonia that No. two bottom spraying mechanisms of two-level absorption tower spray first with mixed gas
Contact carries out secondary washing to mixed gas, then after mixed gas reaches the top of two-level absorption tower, No. two upper layers
The clear water that spraying mechanism sprays carries out last time washing to it, passes through No.1 spraying mechanism, No. two bottom spraying mechanisms and two
The washing of number such three floor of upper layer spraying mechanism, and No.1 spraying mechanism sprays the concentration of ammonium hydroxide and is greater than No. two bottom spray throwers
Structure sprays the concentration of ammonium hydroxide, and No.1 spraying mechanism directly uses clear water, progressive in this way to be washed with better cleaning solution,
The ammonia in mixed gas can be washed out to the greatest extent, and avoid the waste of weak aqua ammonia, weak aqua ammonia is carried out
It is effective to utilize, finally after weak aqua ammonia reaches a certain concentration, collects and recycled.
As the further preferred of the utility model, the tower wall on level-one cooling absorption tower is externally provided with absorption tower cooler
Structure.
Since when washing mixed gas, ammonia can be dissolved into water, and ammonia can release certain heat in dissolution, because
The temperature that this level-one cools down in absorption tower can continue to increase, therefore be provided with absorption tower outside the tower wall on level-one cooling absorption tower and drop
Warm mechanism can absorb the heat in level-one cooling absorption tower in this way, maintain the temperature inside level-one cooling absorption tower rationally
Degree in, extend level-one cooling absorption tower service life, and why two-level absorption tower outer wall be not arranged absorption tower
Cooling mechanism is that have clear water entrance because of the moment in two-level absorption tower, and the lasting injection of clear water can be two-level absorption tower
Inner cavity cooling.
As the further preferred of the utility model, the absorption tower cooling mechanism includes surrounding level-one cooling absorption tower
The absorption tower Water-cooling circulating pipeline being arranged outside tower wall.
It is lasting in the Water-cooling circulating pipeline of absorption tower to be passed through circulating water, make circulating water and level-one cool down absorption tower it
Between the moment occur heat exchange, reduce level-one cooling absorption tower temperature.
As the further preferred of the utility model, outside the tube wall of the water supplying pipe of No. two bottom spraying mechanisms and
Pipe cooling mechanism is equipped with outside the tube wall of coupling tube.
Pipe cooling is set outside the tube wall of the water supplying pipe of No. two bottom spraying mechanisms and outside the tube wall of coupling tube
Mechanism can further reduce the temperature of the ammonium hydroxide generated after washing.
As the further preferred of the utility model, the pipe cooling mechanism includes surrounding No. two bottom spraying mechanisms
Setting and the tube wall Water-cooling circulating pipeline being arranged outside the tube wall of coupling tube outside the tube wall of water supplying pipe.
As the further preferred of the utility model, the ammonium hydroxide outlet on level-one cooling absorption tower by pipeline and divides
It flows ammonium hydroxide pond to be connected, shunts and be equipped with ammonia concn detection sensing instrument, ammonia concn detection sensing instrument and valve opening and closing in ammonium hydroxide pond
The connection of controller electric signal, the ammoniacal liquor outlet for shunting ammonium hydroxide pond includes No.1 outlet and No. two outlets, and No.1 outlet and No. two go out
Mouth is connected by pipeline with the feed cistern for being saturated ammoniacal liquor collecting pit and No.1 spraying mechanism respectively, No.1 outlet and No. two exits
No. two solenoid valves for being respectively provided with the No.1 solenoid valve of control No.1 outlet opening and closing and being opened and closed for controlling No. two outlets, one
Number solenoid valve and No. two solenoid valves are connect with valve opening and closing controller electric signal.
The ammonium hydroxide of level-one cooling absorption tower circulation washing, which can be introduced into, shunts ammonium hydroxide pond, flows into the ammonia shunted in ammonium hydroxide pond
Water detects the detection of sensing instrument by ammonia concn, and the result that ammonia concn detection sensing instrument will test is sent to valve opening and closing control
Device processed, if detecting that its concentration has reached prescribed level, valve opening and closing controller controls No.1 solenoid valve and opens, and ammonium hydroxide flows into
It is saturated in dark night collecting pit and is collected recycling, if detecting that its concentration does not reach prescribed level, valve opening and closing control
Device then controls No. two solenoid valves and opens, and after opening, ammonium hydroxide enters the feed cistern of No.1 spraying mechanism, and pumps in No. two ammonia circulations
Under the action of No.1 spraying mechanism is pumped by circulation circulation washing is carried out to mixed gas.
As the further preferred of the utility model, pool wall water-cooling circular tube is additionally provided with around the pool wall for shunting ammonium hydroxide pond
Road.
Shunt ammonium hydroxide pond pool wall outside setting pool wall Water-cooling circulating pipeline also for be cooling ammonium hydroxide effect it is more preferable.
As the further preferred of the utility model, the deduster is bag filter.
Setting bag filter is to remove the lesser powder of partial size in mixed gas because of bag filter good dedusting effect
Dirt.
Compared with prior art, the utility model can at least reach one in following beneficial effect:
1. having bag filter, the fine particle dusts in mixed gas can be removed, the service life of packing layer is extended.
2. being washed three times, ammonia absorbs thoroughly, good separating effect.
3. ammonium hydroxide adequately is utilized, unnecessary waste not will cause.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model.
Specific embodiment
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation
Example, the present invention will be further described in detail.It should be appreciated that specific embodiment described herein is only used to explain
The utility model is not used to limit the utility model.
Specific embodiment 1:
Fig. 1 shows ammonia in a kind of aluminium ash treatment process and absorbs and purification device, including level-one cools down absorption tower 1, two
Grade absorption tower 2 and deduster 3, the air inlet and exhaust outlet on level-one cooling absorption tower 1 by pipeline respectively with deduster 3
Outlet side is connected with the air inlet of two-level absorption tower 2, and the inlet end of deduster 3 is connected with mixed gas air inlet pipe, and second level absorbs
The packing layer 4 of 2 inner cavity of tower has two layers or more, is arranged in what 2 inner cavity lower part of two-level absorption tower was used cooperatively with lowest level packing layer
Spraying mechanism is No. two bottom spraying mechanisms 5, and the water inlet end of the water supplying pipe of No. two bottom spraying mechanisms 5 passes through No.1 ammonia circulation
Pump 6 is connected with the weak aqua ammonia discharge pipe of two-level absorption tower 2, and being arranged in 2 inner cavity of two-level absorption tower makes with the cooperation of other packing layers
Spraying mechanism be No. two upper layer spraying mechanisms 7, the water supplying pipe of No. two upper layer spraying mechanisms 7 then with clear water water supply network phase
Even, the weak aqua ammonia discharge pipe of two-level absorption tower 2 also passes through coupling tube 8 and sprays with the No.1 that level-one cooling 1 inner cavity of absorption tower is arranged in
The feed cistern 10 for drenching mechanism 9 is connected, and the feed cistern 10 of No.1 spraying mechanism 9 passes through the water supplying pipe and No.1 of No.1 spraying mechanism 9
Spraying mechanism 9 is connected, and the middle part of the water supplying pipe of No.1 spraying mechanism 9 is equipped with No. two ammonia circulation pumps 11.
Provided with deduster, dedusting is carried out to the mixed gas for entering level-one cooling absorption tower, has made to enter level-one cooling
The particulate matter contained in gas in absorption tower is less, can effectively extend the service life of packing layer in this way, then passes through one
Grade cooling absorption tower and two-level absorption tower separate twice, and the content of the ammonia in gas gas after separating is lower, ammonia and hydrogen
Separation more thoroughly, the level-one absorption tower that cools down carries out the washing of first time to mixed gas, and the weak aqua ammonia being washed out is from one
The ammonium hydroxide outlet on number cooling absorption tower is discharged into the feed cistern of No.1 spraying mechanism, carries out circulation sprinkling, to entering level-one
The mixed gas on cooling absorption tower is washed, and the mixed gas after level-one cooling absorption tower washing is from two-level absorption tower
Enter two-level absorption tower at air inlet, the weak aqua ammonia that No. two bottom spraying mechanisms of two-level absorption tower spray first with mixed gas
Contact carries out secondary washing to mixed gas, then after mixed gas reaches the top of two-level absorption tower, No. two upper layers
The clear water that spraying mechanism sprays carries out last time washing to it, passes through No.1 spraying mechanism, No. two bottom spraying mechanisms and two
The washing of number such three floor of upper layer spraying mechanism, and No.1 spraying mechanism sprays the concentration of ammonium hydroxide and is greater than No. two bottom spray throwers
Structure sprays the concentration of ammonium hydroxide, and No.1 spraying mechanism directly uses clear water, progressive in this way to be washed with better cleaning solution,
The ammonia in mixed gas can be washed out to the greatest extent, and avoid the waste of weak aqua ammonia, weak aqua ammonia is carried out
It is effective to utilize, finally after weak aqua ammonia reaches a certain concentration, collects and recycled.
Specific embodiment 2:
The present embodiment is that absorption tower cooling mechanism is additionally arranged on the basis of specific embodiment 1, and the level-one cooling absorbs
The tower wall of tower 1 is externally provided with absorption tower cooling mechanism.
Since when washing mixed gas, ammonia can be dissolved into water, and ammonia can release certain heat in dissolution, because
The temperature that this level-one cools down in absorption tower can continue to increase, therefore be provided with absorption tower outside the tower wall on level-one cooling absorption tower and drop
Warm mechanism can absorb the heat in level-one cooling absorption tower in this way, maintain the temperature inside level-one cooling absorption tower rationally
Degree in, extend level-one cooling absorption tower service life, and why two-level absorption tower outer wall be not arranged absorption tower
Cooling mechanism is that have clear water entrance because of the moment in two-level absorption tower, and the lasting injection of clear water can be two-level absorption tower
Inner cavity cooling.
Specific embodiment 3:
The present embodiment is to have carried out further instruction, institute to absorption tower cooling mechanism on the basis of specific embodiment 2
Stating absorption tower cooling mechanism includes the absorption tower Water-cooling circulating pipeline 12 being arranged outside the tower wall for surrounding level-one cooling absorption tower 1.
It is lasting in the Water-cooling circulating pipeline of absorption tower to be passed through circulating water, make circulating water and level-one cool down absorption tower it
Between the moment occur heat exchange, reduce level-one cooling absorption tower temperature.
Specific embodiment 4:
The present embodiment is that pipe cooling mechanism is additionally arranged on the basis of specific embodiment 2, No. two bottom spray throwers
Pipe cooling mechanism is equipped with outside the tube wall of the water supplying pipe of structure 5 and outside the tube wall of coupling tube 8.
Pipe cooling is set outside the tube wall of the water supplying pipe of No. two bottom spraying mechanisms and outside the tube wall of coupling tube
Mechanism can further reduce the temperature of the ammonium hydroxide generated after washing.
Specific embodiment 5:
The present embodiment is to have carried out further instruction to pipe cooling mechanism on the basis of specific embodiment 4, described
Pipe cooling mechanism includes being arranged outside the tube wall for surrounding the water supplying pipe of No. two bottom spraying mechanisms 5 and around coupling tube 8
The tube wall Water-cooling circulating pipeline 13 being arranged outside tube wall.
Specific embodiment 6:
The present embodiment is to have carried out further instruction, institute to level-one cooling absorption tower 1 on the basis of specific embodiment 1
The ammonium hydroxide outlet for stating level-one cooling absorption tower 1 is connected by pipeline with ammonium hydroxide pond 14 is shunted, and is shunted in ammonium hydroxide pond 14 and is equipped with ammonia
Water concentration detection sensing instrument 15, ammonia concn detection sensing instrument 15 are connect with valve opening and closing controller electric signal, shunt ammonium hydroxide pond
14 ammoniacal liquor outlet includes No.1 outlet and No. two outlets, and No.1 outlet and No. two outlets are received by pipeline and saturation ammoniacal liquor respectively
Collection pond 16 is connected with the feed cistern 10 of No.1 spraying mechanism 9, and No.1 outlet and No. two exits are respectively provided with control No.1
Export the No.1 solenoid valve of opening and closing and No. two solenoid valves for controlling No. two outlet opening and closings, No.1 solenoid valve and No. two solenoid valves
It is connect with valve opening and closing controller electric signal.
The ammonium hydroxide of level-one cooling absorption tower circulation washing, which can be introduced into, shunts ammonium hydroxide pond, flows into the ammonia shunted in ammonium hydroxide pond
Water detects the detection of sensing instrument by ammonia concn, and the result that ammonia concn detection sensing instrument will test is sent to valve opening and closing control
Device processed, if detecting that its concentration has reached prescribed level, valve opening and closing controller controls No.1 solenoid valve and opens, and ammonium hydroxide flows into
It is saturated in dark night collecting pit and is collected recycling, if detecting that its concentration does not reach prescribed level, valve opening and closing control
Device then controls No. two solenoid valves and opens, and after opening, ammonium hydroxide enters the feed cistern of No.1 spraying mechanism, and pumps in No. two ammonia circulations
Under the action of No.1 spraying mechanism is pumped by circulation circulation washing is carried out to mixed gas.
Specific embodiment 7:
The present embodiment is that pool wall Water-cooling circulating pipeline 17 is additionally arranged on the basis of specific embodiment 6, around shunting ammonium hydroxide
The pool wall in pond 14 is additionally provided with pool wall Water-cooling circulating pipeline 17.
Shunt ammonium hydroxide pond pool wall outside setting pool wall Water-cooling circulating pipeline also for be cooling ammonium hydroxide effect it is more preferable.
Specific embodiment 8:
The present embodiment is to have carried out further instruction, the deduster to deduster 3 on the basis of specific embodiment 1
3 be bag filter.
Setting bag filter is to remove the lesser powder of partial size in mixed gas because of bag filter good dedusting effect
Dirt.
Although reference be made herein to the utility model is described in multiple explanatory embodiments of the utility model, still,
It should be understood that those skilled in the art can be designed that a lot of other modification and implementations, these modifications and implementations
It will fall within scope and spirit disclosed in the present application.More specifically, it discloses in the application, drawings and claims
In range, can building block to theme combination layout and/or layout carry out a variety of variations and modifications.In addition to building block
And/or outside the modification and improvement of layout progress, to those skilled in the art, other purposes also be will be apparent.
Claims (8)
1. ammonia absorption and purification device in a kind of aluminium ash treatment process, including level-one cooling absorption tower (1), two-level absorption tower
(2) and deduster (3), it is characterised in that: the air inlet and exhaust outlet of level-one cooling absorption tower (1) by pipeline respectively with
The outlet side of deduster (3) is connected with the air inlet of two-level absorption tower (2), the inlet end of deduster (3) and mixed gas air inlet
Pipe is connected, and the packing layer (4) of two-level absorption tower (2) inner cavity has two layers or more, and setting is in two-level absorption tower (2) inner cavity lower part and most
The spraying mechanism that lower layer's packing layer is used cooperatively is No. two bottom spraying mechanisms (5), the water supplying pipe of No. two bottom spraying mechanisms (5)
Water inlet end by No.1 ammonia circulation pump (6) be connected with the weak aqua ammonia discharge pipe of two-level absorption tower (2), be arranged second level absorption
The spraying mechanism being used cooperatively in tower (2) inner cavity with other packing layers is No. two upper layer spraying mechanisms (7), No. two upper layer spray throwers
The water supplying pipe of structure (7) is then connected with clear water water supply network, and the weak aqua ammonia discharge pipe of two-level absorption tower (2) also passes through coupling tube (8)
Feed cistern (10) with setting in the No.1 spraying mechanism (9) of level-one cooling absorption tower (1) inner cavity is connected, No.1 spraying mechanism
(9) feed cistern (10) is connected by the water supplying pipe of No.1 spraying mechanism (9) with No.1 spraying mechanism (9), No.1 spraying mechanism
(9) middle part of water supplying pipe is equipped with No. two ammonia circulations and pumps (11).
2. ammonia absorption and purification device in a kind of aluminium ash treatment process according to claim 1, it is characterised in that: described
The tower wall of level-one cooling absorption tower (1) is externally provided with absorption tower cooling mechanism.
3. ammonia absorption and purification device in a kind of aluminium ash treatment process according to claim 2, it is characterised in that: described
Absorption tower cooling mechanism includes the absorption tower Water-cooling circulating pipeline being arranged outside the tower wall of level-one cooling absorption tower (1)
(12).
4. ammonia absorption and purification device in a kind of aluminium ash treatment process according to claim 2, it is characterised in that: described
Pipe cooling machine is equipped with outside the tube wall of the water supplying pipe of No. two bottom spraying mechanisms (5) and outside the tube wall of coupling tube (8)
Structure.
5. ammonia absorption and purification device in a kind of aluminium ash treatment process according to claim 4, it is characterised in that: described
Pipe cooling mechanism includes being arranged outside the tube wall of the water supplying pipe of No. two bottom spraying mechanisms (5) and around coupling tube
(8) the tube wall Water-cooling circulating pipeline (13) being arranged outside tube wall.
6. ammonia absorption and purification device in a kind of aluminium ash treatment process according to claim 1, it is characterised in that: described
The ammonium hydroxide outlet of level-one cooling absorption tower (1) is connected by pipeline with ammonium hydroxide pond (14) are shunted, and is shunted and is set in ammonium hydroxide pond (14)
There is ammonia concn detection sensing instrument (15), ammonia concn detection sensing instrument (15) is connect with valve opening and closing controller electric signal, point
The ammoniacal liquor outlet for flowing ammonium hydroxide pond (14) includes No.1 outlet and No. two outlets, No.1 outlet and No. two outlets respectively by pipeline and
Saturation ammoniacal liquor collecting pit (16) is connected with the feed cistern (10) of No.1 spraying mechanism (9), No.1 outlet and No. two exit difference
Equipped with the No.1 solenoid valve for controlling No.1 outlet opening and closing and No. two solenoid valves for controlling No. two outlet opening and closings, No.1 electricity
Magnet valve and No. two solenoid valves are connect with valve opening and closing controller electric signal.
7. ammonia absorption and purification device in a kind of aluminium ash treatment process according to claim 6, it is characterised in that: surround
The pool wall for shunting ammonium hydroxide pond (14) is additionally provided with pool wall Water-cooling circulating pipeline (17).
8. ammonia absorption and purification device in a kind of aluminium ash treatment process according to claim 1, it is characterised in that: described
Deduster (3) is bag filter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821102811.2U CN208465560U (en) | 2018-07-12 | 2018-07-12 | Ammonia absorbs and purification device in a kind of aluminium ash treatment process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821102811.2U CN208465560U (en) | 2018-07-12 | 2018-07-12 | Ammonia absorbs and purification device in a kind of aluminium ash treatment process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208465560U true CN208465560U (en) | 2019-02-05 |
Family
ID=65210442
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821102811.2U Active CN208465560U (en) | 2018-07-12 | 2018-07-12 | Ammonia absorbs and purification device in a kind of aluminium ash treatment process |
Country Status (1)
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| CN (1) | CN208465560U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111318554A (en) * | 2020-04-01 | 2020-06-23 | 大唐环境产业集团股份有限公司 | Ammonium removal system and method for fly ash |
-
2018
- 2018-07-12 CN CN201821102811.2U patent/CN208465560U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111318554A (en) * | 2020-04-01 | 2020-06-23 | 大唐环境产业集团股份有限公司 | Ammonium removal system and method for fly ash |
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