CN204619717U - A kind of Multi-Tube Airlift Loop Reactor for ammonia process of desulfurization oxidation - Google Patents
A kind of Multi-Tube Airlift Loop Reactor for ammonia process of desulfurization oxidation Download PDFInfo
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- CN204619717U CN204619717U CN201520159443.5U CN201520159443U CN204619717U CN 204619717 U CN204619717 U CN 204619717U CN 201520159443 U CN201520159443 U CN 201520159443U CN 204619717 U CN204619717 U CN 204619717U
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- reaction tube
- tube
- loop reactor
- reaction
- airlift loop
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Abstract
The utility model belongs to Boiler Flue Gas Desulphurization Technology field, proposes a kind of Multi-Tube Airlift Loop Reactor for ammonia process of desulfurization oxidation, and a kind of Multi-Tube Airlift Loop Reactor for ammonia process of desulfurization oxidation of proposition is arranged in desulfurizing tower (5); Multi-Tube Airlift Loop Reactor has arranges reaction tube (2) more; Correspondence is arranged reaction tube (2) more and the bottom of reaction tube is provided with air distribution pipe (3); Air distribution pipe (3) has the many groups jet dispersion hole of air hose (14), often organize the corresponding reaction tube (2) of the jet dispersion hole of multiple air hose (14) and arrange; Upper end, the lower end of reaction tube (2) are uncovered structure, form the structure of the ammonium sulfite solution of reaction generation being carried out to cyclic oxidation.The utility model adopts and arrange Multi-Tube Airlift Loop Reactor in desulfurizing tower, carries out cyclic oxidation, improve oxygenation efficiency and the yield coefficient of ammonium sulfate of ammonium sulfite solution to ammonium sulfite solution.
Description
Technical field
The utility model belongs to Boiler Flue Gas Desulphurization Technology field, is specifically related to a kind of Multi-Tube Airlift Loop Reactor for ammonia process of desulfurization oxidation.
Background technology
Ammonia type flue gas desulfurizing technology is a kind of technology being widely used in the industry boiler flue gas desulfurizations such as electric power, chemical industry and metallurgy, and the sulfur dioxide wherein in flue gas is absorbed by ammonia and generates ammonium sulfite, and the oxidation of ammonium sulfite is a step important in desulphurization reaction.
In traditional ammonia-process desulfurization technique, boiler smoke contacts with absorbing liquid adverse current (or and flowing) thus removes the sulfur dioxide in flue gas, and absorbing liquid generates ammonium sulfite solution through reaction; The ammonium sulfite solution generated squeezes into through pump the oxidation that oxidation tank carries out ammonium sulfite; In traditional ammonia desulfurizing process, the oxidation unit for the oxidation carried out ammonium sulfite is arranged on outside desulfurizing tower, includes oxidation tank, injection reactor, circulating pump and jet pump; Injection reactor is positioned at oxidation tank top, ammonium sulfite solution is circulated by circulating pump, through jet pump, because the flow at high speed of liquid forms negative pressure, by air intake, air is contacted with ammonium sulfite solution in oxidation tank oxidation reaction occurs to generate ammonium sulfate.
In oxidation tank, ammonium sulfite solution contacts with air, makes sulfite oxidation generate product ammonium sulfate through the circulation of oxidation pump; Lean on jet pump to be brought into by air to contact with solution because the oxidation of conventional oxidation tank is main, make the oxygen in air and ammonium sulfite reaction, because gas liquid interfacial area is little, oxygenation efficiency is low, Solution dwell time is long, causes ammonium sulfate discharging slow, desulphurization system fluctuation of service, system cloud gray model easily worsens, and increases operation easier.
Summary of the invention
For solving the low problem of ammonia desulfurizing process sulfite ammonium oxygenation efficiency, the purpose of this utility model proposes a kind of Multi-Tube Airlift Loop Reactor for ammonia process of desulfurization oxidation.
In order to reach foregoing invention object, the utility model adopts following technical scheme:
For a Multi-Tube Airlift Loop Reactor for ammonia process of desulfurization oxidation, described Multi-Tube Airlift Loop Reactor is arranged at the bottom of the tower of fume desulfurizing tower; Described Multi-Tube Airlift Loop Reactor has arranges reaction tube more; Described Multi-Tube Airlift Loop Reactor also includes the air distribution pipe that corresponding many row's reaction tubes are arranged; Described air distribution pipe is positioned at the bottom of described reaction tube, and is communicated with air blast; Described air distribution pipe has the jet dispersion hole of many groups, often organize the corresponding reaction tube of the jet dispersion hole of multiple described air hoses; The upper end of described reaction tube, lower end are uncovered structure, in the reactor in tower, air is blasted by air distribution pipe, liquid in tower is made to form certain density contrast, thus the solution in reaction tube is upwards flowed by reaction tube lower end, solution outside reaction tube is flowed downward by reaction tube upper end, in reaction tube, the flow direction of solution and the flow direction of the outer solution of reaction tube form circulation, form the structure of the ammonium sulfite solution of reaction generation being carried out to cyclic oxidation.
In adjacent two row's reaction tubes, three adjacent reaction tubes are equilateral triangle arrangement.
The lower end of described reaction tube is fixed on desulfurizing tower base plate by circulation flow reactor bottom support; The upper end of described reaction tube is connected firmly by the internal face of circulation flow reactor upper support and desulfurizing tower.
A kind of Multi-Tube Airlift Loop Reactor for ammonia process of desulfurization oxidation that the utility model proposes, adopt and Multi-Tube Airlift Loop Reactor is set in desulfurizing tower, multiple reaction tubes of Airlift circulating reactor are all communicated with air blast by air distribution pipe, cyclic oxidation is carried out to ammonium sulfite solution, increase contact area and the time of contact of air and ammonium sulfite solution, increase the mass transfer between gas-liquid, gas-liquid is fully mixed, improves oxygenation efficiency and the yield coefficient of ammonium sulfate of ammonium sulfite solution; Reduce the technological operation difficulty of the ammonia process of desulfurization, with arrange the structure of oxidation tank in prior art outside desulfurizing tower compared with, the utility model has used an operating unit less, has saved occupation of land and permanent plant investment.
Accompanying drawing explanation
Fig. 1 is the using state figure of the utility model in desulfurizer.
Fig. 2 is the enlarged drawing of part A in Fig. 1.
Fig. 3 is the floor plan of Airlift circulating reactor in the utility model.
In figure: 1, shower nozzle, 2, reaction tube, 3, air distribution pipe, 4, circulation discharging pump, 5, desulfurizing tower, 6, air blast, 7, circulation flow reactor bottom support, 8, circulation flow reactor upper support, 8-1, circulation flow reactor upper lateral supports, 8-2, circulation flow reactor top longitudinal bracing, 9, flue gas inlet tube, 10, spray pipe, 11, pipeloop, 12, discharging pipeline, 13, discharge line, 14, the jet dispersion hole of air hose, 15, rise gas cap, 16, tower tray, 17, doctor solution pipeline, 18, oxidation cycle pipeline, 19, doctor solution storage tank, 20, desulfurization absorption pump, 21, doctor solution is to oxidation panel pipeline.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the utility model is described further:
As shown in Figure 1 and Figure 2, a kind of Multi-Tube Airlift Loop Reactor for ammonia process of desulfurization oxidation, described Multi-Tube Airlift Loop Reactor is arranged in desulfurizing tower 5; Described desulfurizing tower 5 is communicated with flue gas inlet tube 9 and absorbing liquid feed mechanism, flue gas is contacted with absorbing liquid afterwards by the gas cap 15 that rises on tower tray 16, sulfur dioxide in flue gas and absorbing liquid reaction generate ammonium sulfite solution, flue gas after desulfurization is discharged from tower top through demist, enters doctor solution storage tank 19 after ammonium sulfite solution collects on tower tray 16 by doctor solution pipeline 17; Ammonium sulfite solution in doctor solution storage tank 19, a part continues to squeeze into tower top by desulfurization absorption pump and absorbs, and a part to be entered bottom desulfurizing tower to oxidation panel pipeline 21 by doctor solution and is oxidized; Composition graphs 3, described Multi-Tube Airlift Loop Reactor has many row's reaction tubes 2, and adjacent two row's reaction tube 2 interlaced arrangement; Composition graphs 3, in this embodiment, in adjacent two row's reaction tubes, three adjacent reaction tubes are equilateral triangle arrangement; The lower end of described reaction tube is fixed on desulfurizing tower base plate by circulation flow reactor bottom support 7; The upper end of described reaction tube is connected firmly by the internal face of circulation flow reactor upper support 8 with desulfurizing tower; Described circulation flow reactor upper support 8 comprises circulation flow reactor upper lateral and supports 8-1 and circulation flow reactor top longitudinal bracing 8-2; Described Multi-Tube Airlift Loop Reactor also includes the air distribution pipe 3 that corresponding many row's reaction tubes 2 are arranged; Described air distribution pipe 3 is positioned at the bottom of described reaction tube 2, and is communicated with air blast 6; Described air distribution pipe 3 has the many groups of jet dispersion hole 14 of air hose in order to be communicated with air distribution pipe and reaction tube, often organize the corresponding reaction tube 2 of the jet dispersion hole 14 of multiple described air hoses and arrange; Upper end, the lower end of described reaction tube 2 are uncovered structure, solution in reaction tube 2 is upwards flowed by reaction tube lower end, solution outside reaction tube 2 is flowed downward by reaction tube upper end, in reaction tube 2, the flow direction of solution and the flow direction of the outer solution of reaction tube 2 form circulation, form the structure of the ammonium sulfite solution of reaction generation being carried out to cyclic oxidation, namely the lower end of described reaction tube 2 is uncovered structure, make ammonium sulfite solution that reaction generates, that be positioned at desulfurizing tower bottom enter reaction tube by the lower end of reaction tube, and contact with the air entered in reaction tube oxidation reaction occurs; The upper end of described reaction tube 2 is uncovered structure, the solution that oxidation reaction is generated is flowed out by the upper end of reaction tube gets back to desulfurizing tower bottom, and again entered in reaction tube by the lower end of reaction tube, cyclic oxidation is carried out to the ammonium sulfite solution that reaction generates, air fully contacts with ammonium sulfite solution in reaction tube, increase the mass transfer between gas-liquid, improve the oxidation rate of ammonium sulfite, shorten the time of staying of solution; Eventually pass through sampling to detect the qualified solution of oxidation and discharge through circulation discharging pump 4 and be sent to follow-up system and process further.
Described air blast 6 adopts Roots blower.
Described absorbing liquid feed mechanism adopts structure of the prior art, does not do too much explanation at this.
The material of Airlift circulating reactor can use the material of fiberglass or other resistance to ammonium sulfite corrosion; Reaction tube design quantity number, according to technique need calculate, Airlift circulating reactor major parameter comprises:
Gas holdup
ε
g=0.647（U
g/（U
g+U
L））
0.68U
g 0.34
ε
g-gas holdup, U
g-gas flow rate, U
l-flow rate of liquid
Liquid volumetric mass transfer
K
La=0.4072 U
g 0.9224[1+(S
d/S
t)]
1.136
K
la-Liquid volumetric mass transfer
U
g-gas flow rate
S
d-reactor descending branch area
S
t-the gross area.
Claims (3)
1., for a Multi-Tube Airlift Loop Reactor for ammonia process of desulfurization oxidation, it is characterized in that: described Multi-Tube Airlift Loop Reactor is arranged at the bottom of the tower of fume desulfurizing tower (5); Described Multi-Tube Airlift Loop Reactor has arranges reaction tube (2) more; Described Multi-Tube Airlift Loop Reactor also includes the corresponding air distribution pipe (3) arranged reaction tube (2) more and arrange; Described air distribution pipe (3) is positioned at the bottom of described reaction tube (2), and is communicated with air blast (6); Described air distribution pipe (3) has the many groups of jet dispersion hole of air hose (14) in order to be communicated with air distribution pipe and reaction tube, often organize the corresponding reaction tube (2) of multiple described jet dispersion hole of air hose (14) and arrange; Upper end, the lower end of described reaction tube (2) are uncovered structure, solution in reaction tube (2) is upwards flowed by reaction tube lower end, reaction tube (2) solution is outward flowed downward by reaction tube upper end, the flow direction of reaction tube (2) interior solution and reaction tube (2) solution outward flow to and form circulation, form the structure of the ammonium sulfite solution of reaction generation being carried out to cyclic oxidation.
2. a kind of Multi-Tube Airlift Loop Reactor for ammonia process of desulfurization oxidation according to claim 1, is characterized in that: in adjacent two rows' reaction tube (2), three adjacent reaction tubes (2) are arranged in equilateral triangle.
3. a kind of Multi-Tube Airlift Loop Reactor for ammonia process of desulfurization oxidation according to claim 1, is characterized in that: the lower end of described reaction tube (2) is fixed on desulfurizing tower base plate by circulation flow reactor bottom support (7); The upper end of described reaction tube is connected firmly by the internal face of circulation flow reactor upper support (8) with desulfurizing tower (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520159443.5U CN204619717U (en) | 2015-03-20 | 2015-03-20 | A kind of Multi-Tube Airlift Loop Reactor for ammonia process of desulfurization oxidation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520159443.5U CN204619717U (en) | 2015-03-20 | 2015-03-20 | A kind of Multi-Tube Airlift Loop Reactor for ammonia process of desulfurization oxidation |
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| Publication Number | Publication Date |
|---|---|
| CN204619717U true CN204619717U (en) | 2015-09-09 |
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ID=54038781
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520159443.5U Expired - Fee Related CN204619717U (en) | 2015-03-20 | 2015-03-20 | A kind of Multi-Tube Airlift Loop Reactor for ammonia process of desulfurization oxidation |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106731626A (en) * | 2017-03-21 | 2017-05-31 | 烟台新瑞环保科技有限公司 | Cluster type gas lift desulfurization reactor |
| CN109107205A (en) * | 2018-09-12 | 2019-01-01 | 江苏师范大学 | A kind of convection type low-temp concentration basin |
| CN112047359A (en) * | 2020-09-17 | 2020-12-08 | 嘉施利（宜城）化肥有限公司 | Comprehensive utilization process for acid-making tail gas and sulfur-based compound fertilizer production |
-
2015
- 2015-03-20 CN CN201520159443.5U patent/CN204619717U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106731626A (en) * | 2017-03-21 | 2017-05-31 | 烟台新瑞环保科技有限公司 | Cluster type gas lift desulfurization reactor |
| CN109107205A (en) * | 2018-09-12 | 2019-01-01 | 江苏师范大学 | A kind of convection type low-temp concentration basin |
| CN112047359A (en) * | 2020-09-17 | 2020-12-08 | 嘉施利（宜城）化肥有限公司 | Comprehensive utilization process for acid-making tail gas and sulfur-based compound fertilizer production |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150909 Termination date: 20180320 |