CN204261538U - Ammonia gas in industrial waste gas separation and purification reclaimer - Google Patents
Ammonia gas in industrial waste gas separation and purification reclaimer Download PDFInfo
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- CN204261538U CN204261538U CN201420698552.XU CN201420698552U CN204261538U CN 204261538 U CN204261538 U CN 204261538U CN 201420698552 U CN201420698552 U CN 201420698552U CN 204261538 U CN204261538 U CN 204261538U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
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- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
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Abstract
Ammonia gas in industrial waste gas separation and purification reclaimer, relates to ammonia separation and purification and reclaims.Be provided with air intake filter, blower fan, discharge filter, gas heat exchanger, ammonia absorbing film, circulating tank, circulating pump, liquid heat-exchanger, absorbing liquid case, absorb liquid pump, the import of described air intake filter is external containing ammonia Industry Waste source of the gas, air intake filter outlet connects fan air inlet, blower fan exhaust outlet runs in air filter air inlet, discharge filter exhaust outlet connects gas heat exchanger air inlet, gas heat exchanger gas outlet connects ammonia absorbing film air inlet, the external feed source of gas heat exchanger cooling water inlet, gas heat exchanger coolant outlet discharges cooling water, the offgas outlet emission compliance tail gas of ammonia absorbing film, the absorbing liquid outlet of ammonia absorbing film connects the absorbing liquid import of circulating tank, the external pure water source of purified water inlet of absorbing liquid case, the outlet of absorbing liquid case connects circulating tank water inlet through absorbing liquid pump, circulating tank outlet connects through circulating pump the absorbing liquid import that liquid heat-exchanger outlet connects ammonia absorbing film.
Description
Technical field
The utility model relates to industrial waste gas process, especially relates to a kind of ammonia gas in industrial waste gas separation and purification reclaimer.
Background technology
Chemical industry is in the production process using liquefied ammonia, and due to the effumability of ammonia, a large amount of gaseous ammonias is discharged in the air by equipment exhausting pipeline, has both caused serious air pollution, causes again raw-material waste.For addressing this problem, the absorption pattern of single cycle Water spray is usually adopted to carry out reclaiming ([1] Shu Shiping etc., the development & application of useless ammonia (water) recovery and purification techniques, Chemical Engineering Design, 2001,11:34-35; [2] Du Wen, the improvement of tungsten metallurgical process ammonia tail gas and utilization process research, Chinese Tungsten Industry, 2008,6:43-46).But this absorption pattern exists following defect: absorption efficiency is low, the assimilation effect of total amount 30% can only be reached; Absorption tower limits by equipment blow-down pipe distance and potential difference, very easily forms gas blocking, affects the normal use of emptying device; Equipment investment cost is high, and water loss is large, and the weak aqua ammonia concentration obtained is low, must pass through double absorption or just can obtain high-load ammoniacal liquor after carrying out rectifying; Nearly 70% ammonia that cannot absorb enters air, causes environmental pollution.
At present, the Main Ingredients and Appearance of industrial waste gas is ammonia, nitrogen, hydrogen and water vapour.
Summary of the invention
The object of the utility model patent is the shortcoming existing for ammonia recovery method adopted in the production process for existing use liquefied ammonia, provides a kind of ammonia gas in industrial waste gas separation and purification reclaimer.
The utility model is provided with air intake filter, blower fan, discharge filter, gas heat exchanger, ammonia absorbing film, circulating tank, circulating pump, liquid heat-exchanger, absorbing liquid case, absorbs liquid pump;
The import of described air intake filter is external containing ammonia Industry Waste source of the gas, the outlet of air intake filter is given a dinner for a visitor from afar the air inlet of machine, the exhaust outlet of blower fan runs in the air inlet of air filter, the exhaust outlet of discharge filter connects the air inlet of gas heat exchanger, the gas outlet of gas heat exchanger connects the air inlet of ammonia absorbing film, the external feed source of cooling water inlet of gas heat exchanger, the coolant outlet of gas heat exchanger discharges cooling water, the offgas outlet emission compliance tail gas of ammonia absorbing film, the absorbing liquid outlet of ammonia absorbing film connects the absorbing liquid import of circulating tank, the external pure water source of purified water inlet of absorbing liquid case, the outlet of absorbing liquid case connects the water inlet of circulating tank through absorbing liquid pump, the outlet of circulating tank connects the absorbing liquid import of ammonia absorbing film through the outlet that circulating pump connects liquid heat-exchanger.
Compared with existing method for recycling ammonia gas in industrial waste gas, the utility model has following advantage:
Ammonia enters in recirculated water through film absorbent assembly, form ammoniacal liquor, by controlling absorbing liquid temperature 0 ~ 10 DEG C, film absorbent assembly entrance blast 35 ~ 40KPa, make ammonia concn reach the standard of commodity ammoniacal liquor, can sell or use by oneself, having saved processing cost, make the ammonia recycling in industrial waste gas, turn waste into wealth.
Ultralow ammonia-containing water after ammonia absorbs, by tail gas absorption acid pond, without ammonia toxic emission air, decreases atmosphere pollution.
Single unit system absorptivity is high, does not cause pipeline blockage, and equipment investment cost is low, less energy consumption, and water consumption is few, obtains the commodity ammoniacal liquor of available recycling.
Accompanying drawing explanation
Fig. 1 is the structure composition schematic diagram of the utility model embodiment.
Detailed description of the invention
Below in conjunction with embodiment and accompanying drawing, the utility model is further described.
See Fig. 1, the utility model embodiment is provided with air intake filter 1, blower fan 2, discharge filter 3, gas heat exchanger 4, ammonia absorbing film 5, circulating tank 6, circulating pump 7, liquid heat-exchanger 8, absorbing liquid case 9, absorbs liquid pump 10.
The import of described air intake filter 1 is external containing ammonia Industry Waste air source A, the outlet of air intake filter 1 is given a dinner for a visitor from afar the air inlet of machine 2, the exhaust outlet of blower fan 2 runs in the air inlet of air filter 3, the exhaust outlet of discharge filter 3 meets the air inlet 4-1 of gas heat exchanger 4, the gas outlet 4-2 of gas heat exchanger 4 meets the air inlet 5-1 of ammonia absorbing film 5, the external feed source B of cooling water inlet 4-3 of gas heat exchanger 4, the coolant outlet 4-4 of gas heat exchanger 4 discharges cooling water C, the offgas outlet 5-2 emission compliance tail gas D of ammonia absorbing film 5, the absorbing liquid outlet 5-4 of ammonia absorbing film 5 connects the absorbing liquid import of circulating tank 6, the external pure water source E of purified water inlet of absorbing liquid case 9, the outlet of absorbing liquid case 9 connects the water inlet of circulating tank 6 through absorbing liquid pump 10, the outlet of circulating tank 6 meets the absorbing liquid import 5-3 of ammonia absorbing film 5 through the outlet that circulating pump 7 connects liquid heat-exchanger 8.
In FIG, flag F represents refrigerant.
During use, following processing step can be adopted:
1) absorbent is injected absorbing liquid case;
2) absorbent is drawn by water pump and enter film absorbent assembly from film absorbent assembly absorbing liquid entrance after refrigeration plant;
3) film absorbent assembly will be squeezed into containing ammonia industrial waste gas by air-introduced machine;
4) become absorbing liquid after absorbent absorption ammonia and get back to absorbing liquid case by the outlet of film absorbent assembly absorbing liquid, again enter absorbing liquid cyclic process;
5) high ammonia-contaminated gas changes ultralow ammonia-contaminated gas into and discharges below film absorbent assembly after absorbing;
6) the ultralow ammonia-contaminated gas access tail gas absorption acid pond of will discharge below film absorbent assembly;
7) ultralow ammonia-contaminated gas changes into without ammonia waste gas after absorbing sour pond, directly emptying;
8) absorbing liquid is through cyclic absorption, in absorbing liquid ammonia content by rising until namely concentration can be used as finished product after reaching the ammoniacal liquor of 25% ~ 30% draw through valve pipeline;
9) refill absorbent to absorbing liquid case, repeat step 2) ~ 9).
In above-mentioned technical process, use water to carry out cyclic absorption as absorbent, in film absorbent assembly, film parameters is as follows: membranous wall aperture: 0.0001 ~ 20 μm, film withstand temperature: 0 ~ 60 DEG C.
In above-mentioned technical process, waste gas and absorbent are respectively in the both sides of film, film absorbent assembly carries out selective absorbing to containing gases such as the ammonias in ammonia industrial waste gas, ammonia through fenestra absorb by the absorbent of opposite side and enter liquid phase, in absorbing liquid ammonia content by rising until concentration namely can be used as after reaching the ammoniacal liquor of 25% ~ 30% finished product draw, then refill absorbing liquid to repeat to absorb, reach the object that Ammonia recovery utilizes.
Below provide specific embodiment.
Embodiment 1
By processing step 1) ~ 9) operation, controling parameters is as follows: step 2 refrigeration plant makes absorbing liquid temperature remain on 0 DEG C, and step 3 film absorbent assembly inlet end air pressure 40KPa, obtaining ammoniacal liquor density is 0.891g/cm
3, amount to ammonia concn 30.23%, see table 1.
Embodiment 2
By processing step 1) ~ 9) operation, controling parameters is as follows: step 2) refrigeration plant makes absorbing liquid temperature remain on 5 DEG C, and step 3 film absorbent assembly inlet end air pressure 40KPa, obtaining ammoniacal liquor density is 0.901g/cm
3, amount to ammonia concn 27.93%, see table 1.
Embodiment 3
By processing step 1) ~ 9) operation, controling parameters is as follows: step 2) refrigeration plant makes absorbing liquid temperature remain on 5 DEG C, and step 3 film absorbent assembly inlet end air pressure 40KPa, obtaining ammoniacal liquor density is 0.910g/cm
3, amount to ammonia concn 24.98%, see table 1.
Embodiment 4
By processing step 1) ~ 9) operation, controling parameters is as follows: step 2) refrigeration plant makes absorbing liquid temperature remain on 5 DEG C, and step 3 film absorbent assembly inlet end air pressure 40KPa, obtaining ammoniacal liquor density is 0.919g/cm
3, amount to ammonia concn 22.08%, see table 1.
Embodiment 5
By processing step 1) ~ 9) operation, controling parameters is as follows: step 2) refrigeration plant makes absorbing liquid temperature remain on 10 DEG C, and step 3 film absorbent assembly inlet end air pressure 30KPa, obtaining ammoniacal liquor density is 0.931g/cm
3, amount to ammonia concn 18.24%, see table 1.
Embodiment 6
By processing step 1) ~ 9) operation, controling parameters is as follows: step 2) refrigeration plant makes absorbing liquid temperature remain on 15 DEG C, and step 3 film absorbent assembly inlet end air pressure 30KPa, obtaining ammoniacal liquor density is 0.936g/cm
3, amount to ammonia concn 16.80%, see table 1.
Embodiment 7
By processing step 1) ~ 9) operation, controling parameters is as follows: step 2) refrigeration plant makes absorbing liquid temperature remain on 20 DEG C, and step 3 film absorbent assembly inlet end air pressure 30KPa, obtaining ammoniacal liquor density is 0.942g/cm
3, amount to ammonia concn 14.90%, see table 1.
Table 1 ammonia spirit change in concentration
| Embodiment | Ammonia temperature (DEG C) | Ammoniacal liquor proportion | Ammonia spirit concentration (mass percent %) |
| 1 | 0 | 0.891 | 30.23 |
| 2 | 5 | 0.901 | 27.93 |
| 3 | 5 | 0.910 | 24.98 |
| 4 | 5 | 0.919 | 22.08 |
| 5 | 10 | 0.931 | 18.24 |
| 6 | 15 | 0.936 | 16.80 |
| 7 | 20 | 0.942 | 14.90 |
The utility model provides a kind of with the apparatus and method for of the ammonia in industrial waste gas for raw materials producers grade purity ammoniacal liquor, waste gas enters film absorbent assembly and carries out ammonia absorption, the film of film absorbent assembly is hollow fiber microporous membrane, waste gas and absorbent respectively in the both sides of film, ammonia through fenestra absorb by the absorbent of opposite side and enter liquid phase.Ammonia in industrial waste gas is absorbed, makes the ammoniacal liquor of certain purity.Actual conditions is: ammonia temperature is 0 ~ 20 DEG C, ammoniacal liquor proportion 0.85 ~ 1.0, and in film absorbent assembly, film parameters is as follows: membranous wall aperture: 0.0001 ~ 20 μm, film withstand temperature: 0 ~ 60 DEG C.The utility model achieves the resource of the ammonia in industrial waste gas, creates the ammoniacal liquor having industrial goods and be worth.
Claims (1)
1. ammonia gas in industrial waste gas separation and purification reclaimer, is characterized in that being provided with air intake filter, blower fan, discharge filter, gas heat exchanger, ammonia absorbing film, circulating tank, circulating pump, liquid heat-exchanger, absorbing liquid case, absorbing liquid pump;
The import of described air intake filter is external containing ammonia Industry Waste source of the gas, the outlet of air intake filter is given a dinner for a visitor from afar the air inlet of machine, the exhaust outlet of blower fan runs in the air inlet of air filter, the exhaust outlet of discharge filter connects the air inlet of gas heat exchanger, the gas outlet of gas heat exchanger connects the air inlet of ammonia absorbing film, the external feed source of cooling water inlet of gas heat exchanger, the coolant outlet of gas heat exchanger discharges cooling water, the offgas outlet emission compliance tail gas of ammonia absorbing film, the absorbing liquid outlet of ammonia absorbing film connects the absorbing liquid import of circulating tank, the external pure water source of purified water inlet of absorbing liquid case, the outlet of absorbing liquid case connects the water inlet of circulating tank through absorbing liquid pump, the outlet of circulating tank connects the absorbing liquid import of ammonia absorbing film through the outlet that circulating pump connects liquid heat-exchanger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420698552.XU CN204261538U (en) | 2014-11-19 | 2014-11-19 | Ammonia gas in industrial waste gas separation and purification reclaimer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420698552.XU CN204261538U (en) | 2014-11-19 | 2014-11-19 | Ammonia gas in industrial waste gas separation and purification reclaimer |
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| Publication Number | Publication Date |
|---|---|
| CN204261538U true CN204261538U (en) | 2015-04-15 |
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| CN201420698552.XU Active CN204261538U (en) | 2014-11-19 | 2014-11-19 | Ammonia gas in industrial waste gas separation and purification reclaimer |
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Effective date of registration: 20160715 Address after: 361000 Fujian city of Xiamen province Chinese (Fujian) Xiamen Xiangyu Road area Free Trade Zone No. 97 Xiamen international shipping center D 8 storey building 03 unit A two Patentee after: Xiamen Chuang Jie environmental protection technology Co., Ltd. Address before: 361000, Xiamen, Fujian Province, Huli District, torch hi tech Zone, North building, room 511 Patentee before: XIAMEN HUANKANG ENVIRONMENTAL PROTECTION TECHNOLOGY CO., LTD. |