CN113230837A - Ammonia gas recovery device and recovery method for diphenylamine production - Google Patents
Ammonia gas recovery device and recovery method for diphenylamine production Download PDFInfo
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- CN113230837A CN113230837A CN202110611454.2A CN202110611454A CN113230837A CN 113230837 A CN113230837 A CN 113230837A CN 202110611454 A CN202110611454 A CN 202110611454A CN 113230837 A CN113230837 A CN 113230837A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
- B01D53/18—Absorbing units; Liquid distributors therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/10—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces
- B01D46/12—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces in multiple arrangements
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/40—Nitrogen compounds
- B01D2257/406—Ammonia
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Abstract
The invention relates to the field of diphenylamine production equipment, and discloses an ammonia recovery device for diphenylamine production, which comprises a first recovery tank, wherein a recovery pipe is arranged below the right side of the first recovery tank, a filter box is arranged at the port of the recovery pipe, a first filter screen is arranged inside the filter box, a second filter screen is arranged inside the filter box and positioned on the left side of the first filter screen, a fixing plate is arranged at the joint of the upper end and the lower end of the first filter screen and the second filter screen and the filter box, a sliding groove is formed in the surface of the fixing plate, and the upper end and the lower end of the first filter screen and the lower end of the second filter screen are both positioned in the sliding groove. This ammonia recovery unit of diphenylamine production has better ammonia filter effect, improves ammonia recovery quality, has better ammonia and dissolves recovery effect, has better cooling's effect, improves the solubility of ammonia, avoids the ammonia to volatilize, has better ammonia absorption liquid make full use of's effect simultaneously, avoids the wasting of resources.
Description
Technical Field
The invention relates to the field of diphenylamine production equipment, in particular to an ammonia recovery device for diphenylamine production and a recovery method thereof.
Background
Diphenylamine is an organic matter, is a white solid, is mainly used for manufacturing lubricating oil antioxidants, plastic antioxidants, rubber antioxidants and gunpowder stabilizers, is also used as an intermediate of dyes and pesticides, can generate ammonia gas in the production process of diphenylamine, is irritant and harmful to human bodies, is directly discharged, pollutes the environment and wastes resources, and therefore the ammonia gas in the production process of diphenylamine needs to be recycled.
Present ammonia recovery unit, there is certain drawback when using, at first, do not have the filtration, the ammonia contains dust particle or other impurity in the ammonia before recovery processing, be unfavorable for the utilization after the ammonia recovery, secondly, there is the ammonia to dissolve the not good problem of recovery effect, ammonia recovery unit does not have cooling structure in addition, the ammonia can make the solution temperature rise at the in-process that utilizes water absorption, the temperature rise very easily causes the ammonia to volatilize from the absorption solution, influence the recovery of ammonia, and finally, do not have ammonia absorption liquid make full use of's effect, there is the not good problem of ammonia absorption liquid utilization ratio, cause the wasting of resources, we propose an ammonia recovery unit and recovery method of diphenylamine production for this reason.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides an ammonia recovery device and an ammonia recovery method for diphenylamine production, which have the advantages of better ammonia filtering effect, better ammonia recovery quality, better ammonia recovery effect, better cooling effect, ammonia solubility improvement, better advantage of full utilization of ammonia absorption liquid, and capability of solving the difficult problems that the ammonia solubility is influenced, the ammonia utilization rate is not high and the resource waste is caused due to the fact that the ammonia absorption liquid is easy to volatilize because of the rising of the temperature of the ammonia absorption liquid, and the ammonia recovery quality is influenced due to impurities in ammonia.
(II) technical scheme
In order to achieve the purposes of better ammonia filtering effect, improved ammonia recovery quality, better ammonia recovery effect, better cooling effect, improved ammonia solubility and better ammonia absorption liquid full utilization effect, the invention provides the following technical scheme: an ammonia recovery device for diphenylamine production, which comprises a first recovery tank, wherein a recovery pipe is arranged below the right side of the first recovery tank, a port of the recovery pipe is provided with a filter tank, a first filter screen is arranged in the filter tank, a second filter screen is arranged at the left side of the first filter screen in the filter box, a fixing plate is arranged at the joint of the upper end and the lower end of the first filter screen and the second filter screen with the filter box, the surface of the fixed plate is provided with a chute, the upper end and the lower end of the first filter screen and the second filter screen are both positioned in the chute, a second recovery tank is arranged on the left side of the first recovery tank, a connecting pipe is arranged between the first recovery tank and the second recovery pipe, the inside of retrieving jar and No. two and retrieving the jar all is provided with the aeration pipe, the surface of aeration pipe is provided with the aeration head, the inside of retrieving jar and No. two jar all is provided with the absorption liquid.
Preferably, be swing joint between rose box and the recovery tube, fixed plate fixed connection is in the surface of the inside upper and lower extreme of rose box, the spout inlays in the surface of fixed plate, be swing joint between a filter screen, No. two filter screens and the fixed plate, a filter screen is the macropore filter screen, No. two filter screens are the pore filter screen.
Preferably, a sealing plate is arranged on the front end surface of the filtering box, screws are arranged at the corners around the front end surface of the sealing plate, the screws penetrate through the sealing plate and are connected with the filtering box, and the sealing plate is movably connected with the filtering box.
Preferably, the left side port of recovery tube extends to the inside of retrieving the jar and links to each other with the aeration pipe, be swing joint between aeration pipe and aeration head and the recovery tube, the upper end port of connecting pipe extends to the top inside of retrieving the jar and links to each other with the aeration pipe, the lower extreme port of connecting pipe extends to the below of retrieving the jar inside No. two, be swing joint between aeration pipe and the jar and retrieve the jar No. two, the aeration head is the micropore formula.
Preferably, an airflow meter is arranged on the surface of the recovery pipe close to the first recovery tank, an airflow control valve is arranged on the surface of the recovery pipe on the right side of the airflow meter, and the recovery pipe is movably connected with the airflow meter and the airflow control valve.
Preferably, the front end surface of No. two recovery tanks is provided with the concentration measurement table, be swing joint between concentration measurement table and the No. two recovery tanks, the left side below of No. two recovery tanks is provided with the circulating pump, be provided with the circulating pipe between the upper end surface of circulating pump and No. two recovery tanks, the inside top of No. two recovery tanks is provided with the drain pipe, the lower terminal surface of drain pipe is provided with rotary nozzle, the upper end of circulating pipe extends to the inside top of No. two recovery tanks and links to each other with the drain pipe, be swing joint between drain pipe and rotary nozzle and the circulating pipe.
Preferably, the well below of the external surface of a recovery jar and No. two recovery jars all is provided with the cooling tank, the inside of cooling tank is provided with the cooling tube, the right side middle part of a recovery jar and the left side middle part of No. two recovery jars all are provided with the thermometer, the rear end of a recovery jar is provided with the coolant liquid case, the left side of coolant liquid case is provided with the water pump, the front end of water pump is provided with leads to the liquid pipe, the front end that leads to the liquid pipe is provided with the shunt tubes, the upper end of coolant liquid case is provided with the condenser, all be provided with the back flow between condenser and the cooling tank.
Preferably, be swing joint between cooling tube and the cooling tank, the entrance point of cooling tube extends to the below of cooling tank front end and links to each other with the shunt tubes, the exit end of cooling tube extends to the rear end top of cooling tank and links to each other with the back flow, be swing joint between cooling tube and back flow and the shunt tubes, the cooling tube encircles the inside of distributing at the cooling tank from bottom to top.
The invention also provides a recovery method of the ammonia recovery device for diphenylamine production, which is applied to the ammonia recovery device for diphenylamine production and comprises the following specific steps:
a. the ammonia gas is connected with the recovery pipe and enters the filter box, and a first filter screen and a second filter screen in the filter box filter the ammonia gas to filter impurities in the ammonia gas;
b. the airflow control valve controls the flow rate of ammonia gas by means of an airflow meter, and the ammonia gas is fully contacted and absorbed with the absorption liquid through the aeration pipes and the aeration heads in the first recovery tank and the second recovery tank;
c. observing the thermometer indication, turning on a water pump, pumping cooling liquid in a cooling liquid tank, entering a cooling pipe in a cooling tank through a liquid through pipe and a shunt pipe to cool absorption liquid, cooling the absorption liquid by a condenser, returning the cooling liquid to the cooling liquid tank, and turning off the water pump when the temperature is reduced;
d. observing the concentration measurement display number, opening the circulating pump, pumping absorption liquid into the circulating pipe, and spraying the absorption liquid from the rotary nozzle through the liquid outlet pipe to absorb ammonia gas above the second recovery tank;
e. and finally collecting the ammonia water in the first recovery tank and the second recovery tank.
(III) advantageous effects
Compared with the prior art, the invention provides an ammonia recovery device for diphenylamine production, which has the following beneficial effects:
1. this ammonia recovery unit and recovery method of diphenylamine production, through the rose box, a filter screen, the combined action of No. two filter screens and fixed plate, through the rose box before the ammonia is retrieved, impurity in the ammonia is filtered and is adsorbed to a filter screen and No. two filter screens of rose box inside one by one, improve the ammonia quality, later stage is regularly screwed down the screw and is taken out a filter screen and No. two filter screens from the spout on the fixed plate and clear up, thereby have better ammonia filter effect, improve the ammonia recovery quality.
2. This ammonia recovery unit and recovery method of diphenylamine production, through a recovery tank, No. two recovery tanks, the aeration pipe, the aeration head, the absorption liquid, the combined action of air current control valve and air current meter, adjust the ammonia inflow speed with the help of air current meter and air current control valve, ammonia gets into the aeration pipe through the recovery pipe, the aeration head becomes even little bubble with the ammonia aeration and fully contacts with the absorption liquid, No. two recovery tanks dissolve the recovery to the ammonia that a recovery tank did not in time retrieve, thereby have better ammonia and dissolve recovery effect.
3. This ammonia recovery unit and recovery method of diphenylamine production, through the coolant liquid case, the cooling tank, the cooling tube, a water pump, the combined action of condenser and thermometer, when absorption liquid temperature rose, the coolant liquid of water pump extraction coolant liquid incasement got into the inside cooling tube of cooling tank through liquid pipe and shunt tubes, the heat of absorption liquid was taken away in the coolant liquid flowed from bottom to top in the cooling tube, it handles the backward flow to the coolant liquid case to have condensed gas cooling through having gone up the back flow, with the help of the thermometer, so circulate until the thermometer registration reduced to suitable temperature, thereby have better cooling's effect, improve the solubility of ammonia, avoid ammonia to volatilize.
4. This ammonia recovery unit and recovery method of diphenylamine production, through the combined action of concentration meter, the circulating pump, the circulating pipe, drain pipe and rotatory nozzle, measure ammonia concentration in the absorption liquid with the help of the concentration meter, before the saturation, when No. two recovery tanks top is full of ammonia, open the circulating pump and draw the absorption liquid and pass through circulating pipe and drain pipe, dissolve the absorption by rotatory nozzle blowout to the ammonia at last, make full use of the solubility of absorption liquid, thereby have better ammonia absorption liquid make full use of's effect, avoid the wasting of resources.
Drawings
FIG. 1 is a schematic view of the present invention;
FIG. 2 is an expanded view of the structure of the filter box of the present invention;
FIG. 3 is an enlarged view of A in FIG. 2 according to the present invention;
FIG. 4 is a cross-sectional view of a first configuration recovery tank of the present invention;
FIG. 5 is a cross-sectional view of the second configuration recovery tank of the present invention;
fig. 6 is a top view of a portion of the structure of the present invention.
Fig. 7 is a schematic structural view of a cooling tank of the structure of the present invention.
In the figure: 1. a first recovery tank; 2. a second recovery tank; 3. a recovery pipe; 4. a filter box; 5. an airflow control valve; 6. an air flow meter; 7. a coolant tank; 8. a concentration measuring meter; 9. a thermometer; 10. a shunt tube; 11. a liquid pipe is communicated; 12. a cooling tube; 13. a cooling tank; 14. a circulation pump; 15. a circulation pipe; 16. a connecting pipe; 17. a first filter screen; 18. a second filter screen; 19. a sealing plate; 20. a screw; 21. a fixing plate; 22. a chute; 23. an aeration pipe; 24. an aeration head; 25. a liquid outlet pipe; 26. rotating the nozzle; 27. a return pipe; 28. a condenser; 29. a water pump; 30. absorbing the liquid.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-7, an ammonia recovery device for diphenylamine production comprises a first recovery tank 1, a recovery pipe 3 is arranged below the right side of the first recovery tank 1, a filter box 4 is arranged at the port of the recovery pipe 3, a first filter screen 17 is arranged inside the filter box 4, a second filter screen 18 is arranged inside the filter box 4 and positioned on the left side of the first filter screen 17, a fixing plate 21 is arranged at the joint of the upper end and the lower end of the first filter screen 17 and the second filter screen 18 and the filter box 4, a sliding chute 22 is arranged on the surface of the fixing plate 21, the upper end and the lower end of the first filter screen 17 and the lower end of the second filter screen 18 are both positioned in the sliding chute 22, a second recovery tank 2 is arranged on the left side of the first recovery tank 1, a connecting pipe 16 is arranged between the first recovery tank 1 and the second recovery pipe 3, aeration pipes 23 are arranged inside the first recovery tank 1 and the second recovery tank 2, and an aeration head 24 is arranged on the surface of the aeration pipe 23, the first recovery tank 1 and the second recovery tank 2 are both internally provided with absorption liquid 30.
Be swing joint between rose box 4 and recovery tube 3, fixed plate 21 fixed connection is in the surface of the inside upper and lower extreme of rose box 4, and spout 22 inlays in fixed plate 21's surface, is swing joint between a filter screen 17, No. two filter screens 18 and the fixed plate 21, and a filter screen 17 is the coarse mesh filter screen, and No. two filter screens 18 are the pore filter screen, are convenient for improve the filter effect, do benefit to the improvement ammonia recovery quality.
The front end surface of rose box 4 is provided with closing plate 19, and the corner all around of the front end surface of closing plate 19 is provided with screw 20, and screw 20 runs through closing plate 19 and links to each other with rose box 4, is swing joint between closing plate 19 and the rose box 4, the change clearance of No. one filter screen 17 and No. two filter screens 18 of being convenient for.
The left side port of recovery tube 3 extends to and links to each other with aeration pipe 23 in the inside of retrieving jar 1 a, be swing joint between aeration pipe 23 and aeration head 24 and the recovery tube 3, the upper end port of connecting pipe 16 extends to and retrieves jar 1 the top inside and aeration pipe 23 links to each other, the lower extreme port of connecting pipe 16 extends to and retrieves jar 2 the below inside No. two, aeration pipe 23 and retrieve jar 1 and retrieve and be swing joint between the jar 2 No. two with a, aeration head 24 is the micropore formula, be convenient for ammonia and absorption liquid 30's abundant contact.
The surface of recovery tube 3 is close to a recovery tank 1 department and is provided with air current meter 6, and the right side that air current meter 6 is located recovery tube 3 is provided with airflow control valve 5 on the surface, is swing joint between recovery tube 3 and air current meter 6 and the airflow control valve 5, and the control of the ammonia air current of being convenient for improves and dissolves the recovery effect.
No. two front end surfaces of recovery tank 2 are provided with concentration measurement table 8, be swing joint between concentration measurement table 8 and No. two recovery tanks 2, No. two left side below of recovery tank 2 is provided with circulating pump 14, be provided with circulating pipe 15 between circulating pump 14 and No. two upper end surfaces of recovery tank 2, No. two inside tops of recovery tank 2 are provided with drain pipe 25, the lower extreme surface of drain pipe 25 is provided with rotary nozzle 26, the upper end of circulating pipe 15 extends to No. two inside tops of recovery tank 2 and links to each other with drain pipe 25, be swing joint between drain pipe 25 and rotary nozzle 26 and the circulating pipe 15, be convenient for absorption liquid 30 make full use of, until the ammonia dissolves saturation, avoid the wasting of resources.
Retrieve jar 1 and retrieve jar 2 No. two well below of external surface all is provided with cooling tank 13, cooling tank 13's inside is provided with cooling tube 12, the right side middle part of retrieving jar 1 and the left side middle part of retrieving jar 2 No. two all are provided with thermometer 9, the rear end of retrieving jar 1 is provided with coolant liquid case 7, coolant liquid case 7's left side is provided with water pump 29, water pump 29's front end is provided with liquid pipe 11, liquid pipe 11's front end is provided with shunt tubes 10, coolant liquid case 7's upper end is provided with condenser 28, all be provided with back flow 27 between condenser 28 and the cooling tank 13, be favorable to the circulative cooling of absorption liquid 30.
Be swing joint between cooling tube 12 and the cooling tank 13, the entrance point of cooling tube 12 extends to the below of cooling tank 13 front end and links to each other with shunt tubes 10, and the exit end of cooling tube 12 extends to the rear end top of cooling tank 13 and links to each other with back flow 27, is swing joint between cooling tube 12 and back flow 27 and the shunt tubes 10, and cooling tube 12 encircles the inside of distributing at cooling tank 13 from bottom to top, is convenient for improve cooling's effect.
In conclusion, through the combined action of the filter box 4, the first filter screen 17, the second filter screen 18 and the fixing plate 21, the ammonia passes through the filter box 4 before being recovered, the first filter screen 17 and the second filter screen 18 in the filter box 4 sequentially filter and adsorb impurities in the ammonia, the quality of the ammonia is improved, and the first filter screen 17 and the second filter screen 18 are taken out from the sliding groove 22 in the fixing plate 21 for cleaning by screwing down the screw 20 at regular intervals in the later stage, so that the ammonia filtering effect is better, and the ammonia recovery quality is improved; the combined action of the first recovery tank 1, the second recovery tank 2, the aerator pipe 23, the aerator 24, the absorption liquid 30, the airflow control valve 5 and the airflow meter 6 is utilized, the inflow speed of ammonia is adjusted by the airflow meter 6 and the airflow control valve 5, the ammonia enters the aerator pipe 23 through the recovery pipe 3, the aerator 24 aerates the ammonia into uniform small bubbles to be fully contacted with the absorption liquid 30, and the second recovery tank 2 dissolves and recovers the ammonia which is not timely recovered by the first recovery tank 1, so that the better ammonia dissolving and recovering effect is achieved; through the combined action of the cooling liquid tank 7, the cooling tank 13, the cooling pipe 12, the water pump 29, the condenser 28 and the thermometer 9, when the temperature of the absorption liquid 30 rises, the water pump 29 pumps the cooling liquid in the cooling liquid tank 7 to enter the cooling pipe 12 inside the cooling tank 13 through the liquid through pipe 11 and the shunt pipe 10, the cooling liquid flows in the cooling pipe 12 from bottom to top to take away the heat of the absorption liquid 30, and flows back to the cooling liquid tank 7 through the cooling treatment of the condenser 28 on the return pipe 27, and the circulation is performed by means of the thermometer 9 until the temperature indicated by the thermometer 9 is reduced to a proper temperature, so that the cooling liquid has a good cooling effect, the solubility of ammonia is improved, and the ammonia is prevented from volatilizing; through the combined action of concentration meter 8, circulating pump 14, circulating pipe 15, drain pipe 25 and rotatory nozzle 26, measure ammonia gas concentration in absorption liquid 30 with the help of concentration meter 8, before absorption liquid 30 saturation, when No. two recovery tanks 2 tops are filled with the ammonia, open circulating pump 14 and extract absorption liquid 30 and pass through circulating pipe 15 and drain pipe 25, dissolve the absorption by rotatory nozzle 26 blowout to the ammonia at last, make full use of absorption liquid 30, thereby have better ammonia absorption liquid 30 make full use of's effect, avoid the wasting of resources.
The invention also provides a recovery method of the ammonia recovery device for diphenylamine production, which is applied to the ammonia recovery device for diphenylamine production and comprises the following specific steps:
a. the ammonia gas is connected with the recovery pipe 3 and enters the filter tank 4, and a first filter screen 17 and a second filter screen 18 in the filter tank 4 filter the ammonia gas to filter impurities in the ammonia gas;
b. the airflow control valve 5 controls the flow rate of ammonia gas by means of an airflow meter, and the ammonia gas is fully contacted and absorbed with the absorption liquid 30 through the aeration pipes 23 and the aeration heads 24 in the first recovery tank 1 and the second recovery tank 2;
c. observing the indication number of the thermometer 9, turning on a water pump 29, pumping cooling liquid in the cooling liquid tank 7, entering a cooling pipe 12 in a cooling tank 13 through a liquid communication pipe 11 and a shunt pipe 10 to cool absorption liquid 30, cooling through a condenser 28, returning to the cooling liquid tank 7, and turning off the water pump 29 when the temperature is reduced;
d. observing the number of the concentration measuring meter 8, starting the circulating pump 14, pumping the absorption liquid 30 into the circulating pipe 15, and spraying the absorption liquid from the rotary nozzle 26 through the liquid outlet pipe 25 to absorb the ammonia gas above the second recovery tank 2;
e. and finally collecting the ammonia water in the first recovery tank 1 and the second recovery tank 2.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. The utility model provides an ammonia recovery unit of diphenylamine production, includes recovery tank (1), its characterized in that: a recovery pipe (3) is arranged below the right side of the first recovery tank (1), a filter box (4) is arranged at the port position of the recovery pipe (3), a first filter screen (17) is arranged in the filter box (4), a second filter screen (18) is arranged on the left side of the first filter screen (17) in the filter box (4), a fixing plate (21) is arranged at the joint of the upper end and the lower end of the first filter screen (17) and the second filter screen (18) and the filter box (4), a sliding groove (22) is formed in the surface of the fixing plate (21), the upper end and the lower end of the first filter screen (17) and the second filter screen (18) are both arranged in the sliding groove (22), a second recovery tank (2) is arranged on the left side of the first recovery tank (1), and a connecting pipe (16) is arranged between the first recovery tank (1) and the second recovery pipe (3), the inside of first recovery tank (1) and No. two recovery tank (2) all is provided with aeration pipe (23), aeration head (24) are provided with on the surface of aeration pipe (23), the inside of first recovery tank (1) and No. two recovery tank (2) all is provided with absorption liquid (30).
2. An ammonia recovery device for diphenylamine production as defined in claim 1, wherein: be swing joint between rose box (4) and recovery tube (3), fixed plate (21) fixed connection is on the surface of lower extreme in the inside of rose box (4), spout (22) inlay in the surface of fixed plate (21), be swing joint between a filter screen (17), No. two filter screens (18) and fixed plate (21), a filter screen (17) is the coarse pore filter screen, No. two filter screens (18) are the pore filter screen.
3. An ammonia recovery device for diphenylamine production as defined in claim 1, wherein: the filter box is characterized in that a sealing plate (19) is arranged on the front end surface of the filter box (4), screws (20) are arranged at the corners around the front end surface of the sealing plate (19), the screws (20) penetrate through the sealing plate (19) to be connected with the filter box (4), and the sealing plate (19) is movably connected with the filter box (4).
4. An ammonia recovery device for diphenylamine production as defined in claim 1, wherein: the inside that the left side port of recovery tube (3) extended to recovery jar (1) links to each other with aeration pipe (23), be swing joint between aeration pipe (23) and aeration head (24) and recovery tube (3), the upper end port of connecting pipe (16) extends to the top inside that recovery jar (1) links to each other with aeration pipe (23), the lower extreme port of connecting pipe (16) extends to the below inside that No. two recovery jars (2), be swing joint between aeration pipe (23) and recovery jar (1) and No. two recovery jars (2), aeration head (24) are the micropore formula.
5. An ammonia recovery device for diphenylamine production as defined in claim 1, wherein: an airflow meter (6) is arranged on the surface of the recovery pipe (3) close to the first recovery tank (1), an airflow control valve (5) is arranged on the surface of the recovery pipe (3) on the right side of the airflow meter (6), and the recovery pipe (3) is movably connected with the airflow meter (6) and the airflow control valve (5).
6. An ammonia recovery device for diphenylamine production as defined in claim 1, wherein: the front end surface of No. two recovery tanks (2) is provided with concentration measurement meter (8), be swing joint between concentration measurement meter (8) and No. two recovery tanks (2), the left side below of No. two recovery tanks (2) is provided with circulating pump (14), be provided with circulating pipe (15) between the upper end surface of circulating pump (14) and No. two recovery tanks (2), the inside top of No. two recovery tanks (2) is provided with drain pipe (25), the lower extreme surface of drain pipe (25) is provided with rotary nozzle (26), the upper end of circulating pipe (15) extends to the inside top of No. two recovery tanks (2) and links to each other with drain pipe (25), be swing joint between drain pipe (25) and rotary nozzle (26) and circulating pipe (15).
7. An ammonia recovery device for diphenylamine production as defined in claim 1, wherein: retrieve jar (1) and the well below of the external surface of No. two recovery tanks (2) and all be provided with cooling tank (13), the inside of cooling tank (13) is provided with cooling tube (12), the right side middle part of retrieving jar (1) and the left side middle part of retrieving jar (2) No. two all are provided with thermometer (9), the rear end of retrieving jar (1) is provided with coolant liquid case (7), the left side of coolant liquid case (7) is provided with water pump (29), the front end of water pump (29) is provided with leads to liquid pipe (11), the front end that leads to liquid pipe (11) is provided with shunt tubes (10), the upper end of coolant liquid case (7) is provided with condenser (28), all be provided with back flow (27) between condenser (28) and cooling tank (13).
8. An ammonia recovery device for diphenylamine production as defined in claim 7, wherein: be swing joint between cooling tube (12) and cooling tank (13), the entrance point of cooling tube (12) extends to the below of cooling tank (13) front end and links to each other with shunt tubes (10), the exit end of cooling tube (12) extends to the rear end top of cooling tank (13) and links to each other with back flow (27), be swing joint between cooling tube (12) and back flow (27) and shunt tubes (10), cooling tube (12) encircle the inside of distributing at cooling tank (13) from bottom to top.
9. A recovery method of an ammonia recovery device for diphenylamine production is applied to the ammonia recovery device for diphenylamine production in any one of claims 1-8, and is characterized in that: the method comprises the following specific steps:
a. the ammonia gas is connected with the recovery pipe (3) and enters the filter box (4), and a first filter screen (17) and a second filter screen (18) in the filter box (4) filter the ammonia gas to filter impurities in the ammonia gas;
b. the airflow control valve (5) controls the flow rate of ammonia gas by means of an airflow meter, and the ammonia gas is fully contacted and absorbed with the absorption liquid (30) through an aeration pipe (23) and an aeration head (24) in the first recovery tank (1) and the second recovery tank (2);
c. observing the indication number of a thermometer (9), turning on a water pump (29), pumping cooling liquid in a cooling liquid tank (7), entering a cooling pipe (12) in a cooling tank (13) through a liquid communicating pipe (11) and a shunt pipe (10) to cool absorption liquid (30), cooling through a condenser (28), returning to the cooling liquid tank (7), and turning off the water pump (29) when the temperature is reduced;
d. observing the reading of the concentration measuring meter (8), opening the circulating pump (14), pumping the absorption liquid (30) into the circulating pipe (15), and spraying the absorption liquid from the rotary nozzle (26) through the liquid outlet pipe (25) to absorb the ammonia gas above the second recovery tank (2);
e. and finally collecting the ammonia water in the first recovery tank (1) and the second recovery tank (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110611454.2A CN113230837A (en) | 2021-06-01 | 2021-06-01 | Ammonia gas recovery device and recovery method for diphenylamine production |
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| CN212283301U (en) * | 2020-05-26 | 2021-01-05 | 临沂铭品化工有限责任公司 | Filter equipment that ammonia recovery tower was used |
| CN212819002U (en) * | 2020-06-09 | 2021-03-30 | 四川武胜春瑞医药化工有限公司 | Ammonia gas recovery device |
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| CN2692149Y (en) * | 2004-04-08 | 2005-04-13 | 曹宏生 | Diphenyl amine prodcuction and ammonia recorery device |
| WO2010081707A1 (en) * | 2009-01-13 | 2010-07-22 | Saipem S.P.A. | Process for the recovery of ammonia from a gaseous stream |
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Application publication date: 20210810 |