CN202962250U - Gas-solid-liquid three-phase reactor by using ferric carbon micro-electrolysis to purify harmful gases - Google Patents
Gas-solid-liquid three-phase reactor by using ferric carbon micro-electrolysis to purify harmful gases Download PDFInfo
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- CN202962250U CN202962250U CN2012205291438U CN201220529143U CN202962250U CN 202962250 U CN202962250 U CN 202962250U CN 2012205291438 U CN2012205291438 U CN 2012205291438U CN 201220529143 U CN201220529143 U CN 201220529143U CN 202962250 U CN202962250 U CN 202962250U
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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
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Abstract
The utility model relates to a gas-solid-liquid three-phase reactor by using ferric carbon micro-electrolysis to purify harmful gases. The reactor is used for removing volatile organic compounds, such as hydrocarbon, alcohol, ether, aldehyde, phenol, ketone, ester and amine as well as inorganic substances, such as hydrogen sulfide, sulfur dioxide, nitric oxides and ammonia from air flow. The reactor is characterized in that a gas-solid-liquid three-phase reaction area which takes a ferrous material as a micro-electrolysis fixed anode and activated carbon as a noxious substance adsorbent and a micro-electrolysis cathode is arranged in the reactor, the lower part of the reactor is provided with a gas inlet and an absorption liquid outlet, the upper part of the reactor is provided with a gas outlet and a liquid inlet, and the upper part of the gas inlet in the lower part in the reactor is also provided with a gas distributor. The reactor has the characteristics of high treatment efficiency, easiness in operation, reliability and practicability.
Description
Technical field
The utility model relates to a kind of little electrolytic gas solid-liquid of iron charcoal phase reactor of purifying harmful gas; be particularly related to volatile organic matters such as removing hydrocarbon, alcohol, ether, aldehyde, phenol, ketone, ester and amine from air-flow; the reactor of the inorganic matters such as hydrogen sulfide, sulfur dioxide, nitrogen oxide and ammonia belongs to Air Pollution Control and environmental protection technical field.
Background technology
The volatile organic matters such as various pernicious gases such as hydrocarbon, alcohol, ether, aldehyde, phenol, ketone, ester and amine, the inorganic matters such as hydrogen sulfide, sulfur dioxide, nitrogen oxide and ammonia, foul gas results from chemistry, pharmacy, sprays paint, the various production processes such as Sewage Disposal.These pollutants are not only harmful, some or carcinogen, and also a large amount of discharging is gone back the localized region environment and has been produced and seriously influence.But due to these gases or steady chemical structure, be difficult for degraded, or threshold value is lower, poorly water-soluble brings very large difficulty to purified treatment.
Usually, absorption process is one of main method of removing these pernicious gases, but that the subject matter that the method faces in actual applications is liquid absorption capacity is limited, because phase equilibrium relationship can't absorb fully; When especially the nuisances such as the little gaseous contaminant of solubility such as carrene and toluene being absorbed, assimilation effect is not good, solution after absorbing simultaneously is as without further processing, and the product that is absorbed after processing can evaporate again, will cause the generation of secondary pollution.Therefore how to improve the absorptivity of absorption liquid, prevent that the generation of secondary volatilization from being urgent problem in this skilled industry application process.
The basic principle of liquid phase micro-electrolysis method is to utilize microelectrolysis process in electrode surface generation electrochemical reaction, produces strong oxidative free radical OH, HO
2And H
2O
2Deng, these strong oxidizing property materials and nuisance reaction finally are converted into harmless object to nuisance.General micro-electrolysis method is used for the wastewater treatment of chemical industry difficult degradation, and also to the technology report of little electrolysis, but document all concentrates in the processing of waste water and uses in the Chinese patent literature storehouse.Not yet see the report that micro electrolysis tech is applied to waste gas pollution control and treatment.
The purpose of this utility model is design and the little electrolytic gas solid-liquid of the iron charcoal phase reactor that a kind of purifying harmful gas is provided, be used for removing pernicious gas from air-flow, make these pernicious gases that contain in air-flow be transformed and degrade, thereby reach the purpose of cleaning harmful gas.
Summary of the invention
The technical problems to be solved in the utility model is existing background technology to be provided a kind of little electrolytic gas solid-liquid of iron charcoal phase reactor of purifying harmful gas, and it is easy to use, and efficient is high, and expense is cheap.
the utility model solves the problems of the technologies described above the technical scheme that adopts: a kind of little electrolytic gas solid-liquid of iron charcoal phase reactor of purifying harmful gas, it is characterized in that adopting charcoal absorption in conjunction with the little electrolytics reaction of iron charcoal, comprising fixing phase ferrous material as the anode of little electrolysis and mobile phase active carbon as the adsorbent of nuisance and the negative electrode of little electrolysis, its processing procedure is that processed gas is imported this device, make the pernicious gas that contains in processed gas be absorbed by liquid absorption with absorption liquid in charcoal absorption, then under the little electrolysis that is formed by the iron charcoal, pernicious gas generation redox reaction, nuisance in air-flow is degraded, reach the purpose of gas purification.
The structure of the little electrolytic gas solid-liquid of the iron charcoal phase reactor of a kind of purifying harmful gas described in the utility model is generally column structure, is generally netted or the structured packing structure as the ferrous material of fixed electrode, and its clean-up effect is about the same.Mesh electrode mesh area is generally 1mm
2-2500mm
2, the web plate distance is generally 3mm-300mm, the visual reactor size of web plate quantity, mesh and distance and the apolegamy of processing tolerance, and structured packing can be according to the relevant filling-material structure on tower chemical industry equipment handbook such as the apolegamys such as Raschig ring, Pall ring or cascade ring.Active carbon as Fluidized Electrode is generally spherical or cylindricality, diameter is generally 0.1mm-40mm, activated carbon is generally 0.1%-90% in the pack completeness of liquid phase, and the best is 5%-20%, and the parameters such as the harmful gas concentration of specifically processing according to need, processing tolerance and processing requirements are selected.In reactor, all fixed electrode materials should be below absorption liquid liquid level 100mm, so that it plays useful effect.Waste gas is passed into by reactor bottom, behind the gas-solid-liquid phase reaction district that forms through gas distributor and the zone that is comprised of iron net or filler and active carbon, is discharged by top.Under the effect of air-flow, the active carbon in liquid phase is in fluidized state, constantly contacts with iron net or filler in being immersed in liquid phase, and micro-electrolysis reaction occurs.Liquid filling opening and gas vent are arranged on the top of reactor, and leakage fluid dram and gas feed are arranged on the bottom of reactor, and in reactor, the top of gas feed also is provided with gas distributor.Reactor can also or be composed in series alternation by above-mentioned a plurality of parallel connections.Can regularly replace after ferrous material and active carbon consumption, absorption liquid also can regularly replace.
Absorption liquid described in the utility model generally adopts the pH value less than 7.5 acidic aqueous solution, example hydrochloric acid and sulfuric acid, and the degradation rate of the nuisance under sour environment is higher.Can add the salt such as a certain amount of sodium chloride or sodium sulphate as electrolyte, electrolyte mass percent concentration concentration is generally 0.1%-25%.
When reactor work described in the utility model, waste gas is passed into by reactor bottom, through after gas distributor, the gas-solid-liquid phase reaction district that forms in the zone that is formed by iron net or filler and active carbon, at first pernicious gas is absorbed by liquid absorption and charcoal absorption, then the iron net in active carbon and reactor or filler are consisting of numerous micro cell, and the generating electrodes reaction has produced material such as OH, HO with strong reactivity
2Deng free radical, these materials be dissolved in solution and by the nuisance generation chemical reaction of charcoal absorption, finally the gas phase nuisance is effectively absorbed removal.By the liquid phase ingredient analysis, organic main degradation products is organic acid, and final degradable is carbon dioxide and water; The main absorption product of nitrogen oxide is nitrate ion.
Compared with prior art, the utility model advantage is: the mode that adopts charcoal absorption and micro-electrolysis reaction to combine, when making pernicious gas pass through absorption liquid by charcoal absorption, improved the absorbability of absorption liquid, further by the little electrolytics reaction of iron charcoal, pernicious gas is degraded, thereby greatly improved assimilation effect, also avoided the possibility of nuisance secondary volatilization, be specially adapted to the processing as organic in chlorinated organics, toluene etc. of water-soluble bad harmful gaseous pollutant, has treatment effeciency high, simple to operate, reliable and practical.
Description of drawings
Fig. 1 is the structural representation of the little electrolytic gas solid-liquid of the iron charcoal phase reactor embodiment 1 of a kind of purifying harmful gas described in the utility model: in figure, parts label 1 is processed gas feed, 2 is filling opening, 3 is purified gas outlet, 4 for the iron net (from totally 4, can change according to processing tolerance and installing during actual the use), 5 is active carbon, and 6 is gas distributor, and 7 is leakage fluid dram.
Fig. 2 is the structural representation of the little electrolytic gas solid-liquid of the iron charcoal phase reactor embodiment 2 of a kind of purifying harmful gas described in the utility model: in figure, parts label 1 is processed gas feed, 2 is filling opening, 3 is purified gas outlet, 4 is active carbon, 5 are iron filler, 6 is gas distributor, and 7 is leakage fluid dram.
The specific embodiment
Embodiment is described in further detail the utility model below in conjunction with accompanying drawing, but protection domain of the present utility model is not limited to this.
Embodiment 1: experimental provision adopts structure of reactor shown in Figure 1, and the ectosome material is polypropylene, is of a size of 120mm * 120mm * 1000mm, and adjacent iron net distance is 50mm, and iron net thickness is 2mm, and mesh is 5mm * 5mm.As the active carbon of the utmost point that flows, the average geometric diameter is about 1mm, and activated carbon is about 10% in the pack completeness of liquid phase.Simulated exhaust is passed into by reactor bottom, behind gas distributor and gas-solid-liquid phase reaction district, is discharged by top.
Experiment condition is: absorption liquid is the common salt aqueous solution+hydrochloric acid of 2%.PH value of solution=3 ± 0.5.
Gas flow: 2000ml/min, gas temperature: 25 ℃
The waste gas kind is common are the volatile organic matters such as the representational hydrocarbon of table, alcohol, ether, aldehyde, phenol, ketone, ester and amine, inorganic waste gases hydrocarbon, alcohol, ether, aldehyde, ketone, ester, sulfur dioxide and the nitrogen oxide such as hydrogen sulfide, sulfur dioxide, nitrogen oxide and ammonia.
Carrier gas: air.
Experimental result: as shown in table 1
Table 1 nuisance removal effect
Embodiment 2: experimental provision adopts structure of reactor shown in Figure 2, and the reactor shell material is polypropylene, diameter 150mm, and effective depth 1000mm, irony Pall ring diameter 25mm, thickness is 2mm.As the activated carbon granule of the utmost point that flows, the average geometric diameter is about 1mm, and activated carbon is about 15% in the pack completeness of liquid phase.Simulated exhaust is passed into by reactor bottom, behind gas distributor and gas-solid-liquid phase reaction district, is discharged by top.
Experiment condition is: absorption liquid is the sodium sulphate aqueous solution+sulfuric acid of 2%.PH value of solution=5 ± 0.5.
Gas flow: 2000ml/min, gas temperature: 25 ℃
The waste gas kind is embodiment 1 roughly the same
Carrier gas: air
Experimental result: as shown in table 2.
Table 2 nuisance removal effect
Claims (3)
1. the little electrolytic gas solid-liquid of the iron charcoal phase reactor of a purifying harmful gas is characterized in that being provided with in described reactor gas-solid-liquid phase reaction district, and described gas-solid-liquid phase reaction district is by mutually fixing and mobile phase composition, and is immersed in absorption liquid; The bottom of described reactor is provided with gas feed and absorption liquid leakage fluid dram, and the top of reactor is provided with gas vent and filling opening, and in reactor, the top of lower gas import also is provided with gas distributor.
2. the little electrolytic gas solid-liquid of the iron charcoal phase reactor of a kind of purifying harmful gas according to claim 1, is characterized in that described fixing be mutually gauze packing or structured packing structure, and described gauze packing mesh area is 1mm
2-2500mm
2, adjacent web plate distance is 3mm-300mm; Described structured packing is the relevant general regular filling-material structure of chemical tower equipment, comprises Raschig ring, Pall ring or cascade ring.
3. the little electrolytic gas solid-liquid of the iron charcoal phase reactor of a kind of purifying harmful gas according to claim 1, is characterized in that described mobile phase is spherical or cylindricality, and diameter is 0.1mm-40mm.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012205291438U CN202962250U (en) | 2012-10-03 | 2012-10-03 | Gas-solid-liquid three-phase reactor by using ferric carbon micro-electrolysis to purify harmful gases |
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|---|---|---|---|
| CN2012205291438U CN202962250U (en) | 2012-10-03 | 2012-10-03 | Gas-solid-liquid three-phase reactor by using ferric carbon micro-electrolysis to purify harmful gases |
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| CN202962250U true CN202962250U (en) | 2013-06-05 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108975461A (en) * | 2018-07-23 | 2018-12-11 | 西安建筑科技大学 | A kind of drainage pipeline networks hydrogen sulfide gas depassing unit and method |
-
2012
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108975461A (en) * | 2018-07-23 | 2018-12-11 | 西安建筑科技大学 | A kind of drainage pipeline networks hydrogen sulfide gas depassing unit and method |
| CN108975461B (en) * | 2018-07-23 | 2021-03-16 | 西安建筑科技大学 | Device and method for degassing hydrogen sulfide gas in drainage pipe network |
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| 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 |
Granted publication date: 20130605 Termination date: 20141003 |
|
| EXPY | Termination of patent right or utility model |