CN204079570U - Fenton reactor - Google Patents

Fenton reactor Download PDF

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Publication number
CN204079570U
CN204079570U CN201420128254.7U CN201420128254U CN204079570U CN 204079570 U CN204079570 U CN 204079570U CN 201420128254 U CN201420128254 U CN 201420128254U CN 204079570 U CN204079570 U CN 204079570U
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retort
pipe
water
fenton
communicated
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王丹丹
陈福明
吴思国
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Tsinghua University
Shenzhen Research Institute Tsinghua University
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Shenzhen Research Institute Tsinghua University
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Abstract

The utility model relates to a kind of Fenton reactor.This Fenton reactor comprises, by the road ejector, coil pipe, the retort of sequential communication; Described ejector flows into described coil pipe after receiving the waste water and Fenton reagent pumped into by the road and carries out hybrid reaction, then enter by needle-valve regulate and control pressure retort in carry out Fenton reaction.

Description

Fenton reactor
Technical field
The utility model relates to a kind of Fenton reactor.
Background technology
Within 1894, H.Fenton finds, hydrogen peroxide and ferrous ion can decompose tartrate by the efficient oxidation in acidic aqueous solution.This reagent is called Fenton reagent by people, is called that Fenton reacts by using the reaction of this reagent.The OH with strong oxidizing property can be produced in Fenton reaction process, its redox potential is up to 2.8V, can react with most organic pollutants, the thorough destruction organic constitution of non-selectivity, final generation CO2, H2O and inorganic salt, have speed of response fast, the advantages such as non-secondary pollution, are widely used in the organic pollutant process of high density difficult for biological degradation.
Traditional F enton reaction exists that running cost is higher, reaction conditions requirement strictly, easily produces secondary pollution problems in actual applications, and wherein Fenton reagent usage quantity is large, and the problem that reagent cost is high is particularly outstanding.Yang Ying adopts batch mode adding Fenton reagent to process the high salt organic waste water produced in bisphenol A epoxide resin production process, TOC is reduced to below 150mg/L by 2300mg/L, compared with the multiple-effect evaporation processing cost of more than 200 yuan/ton, adding of agent cost is expected to be 150 yuan/ton.By changing dosing method and improving temperature of reaction, improve the clearance of hydrogen peroxide utilising efficiency and organic pollutant, Fenton oxidation successful improves.The reason in batches adding the removal efficiency that can improve Fenton oxidation is, disposable add medicament after, ferrous by the free excessive concentration of free radical competition and local, and to occur from consumption reaction, thus reduce organic removal efficiency.Its weak point is the complicacy adding operation.The superfine people of Liu Shang devises a kind of Fenton reagent reactor, is designed by hybrid reaction tubular construction, solves in traditional F enton technique the uneven problem of mixing manually adding Fenton reagent and cause.The medium people of Li Pei devises a kind of Fenton reaction triphase separator, is that power forms circulation in guide shell with gas, thus reaches the object improving oxygenant and catalyst contacting efficiency.The efficient Fenton reactor of Song Daifeng design adopts the mode of coil pipe heating and aeration mixing to improve Fenton reaction efficiency.Its weak point is aeration and adds heat gain energy consumption.
Summary of the invention
The purpose of this utility model is to provide a kind of usage quantity reducing Fenton reagent, improves Fenton reaction efficiency, reduces the consumption such as power and heat energy, thus reduces the running cost of Fenton reaction, the Fenton reactor simultaneously simplified the operation.
Technical solution of the present utility model is described Fenton reactor, and its special character is: comprise the ejector of sequential communication by the road, coil pipe, retort; Described ejector flows into described coil pipe after receiving the waste water and Fenton reagent pumped into by the road and carries out hybrid reaction, then enter by needle-valve regulate and control pressure retort in carry out Fenton reaction.
As preferably: the rising pipe of described retort divides two-way through T-shaped pipe, a road connection safety valve and another road Bonding pressure table also connect water outlet by needle-valve.
As preferably: the distributing style of described coil pipe and described retort selects following one:
(1) coil pipe is made up of the spiral pipe that transverse rotation is shaping, the bottom-up outer wall being wrapped in retort of described spiral pipe, the water-in of spiral pipe is positioned at the bottom of retort, the spiral pipe water outlet that is positioned at retort top is communicated with the water-in bottom retort to downward-extension through pipe tunnel, and retort top is provided with the water outlet be communicated with T-shaped pipe;
(2) coil pipe is made up of the spiral pipe that transverse rotation is shaping, described spiral pipe is from up to down wrapped in the outer wall of retort, the water-in of spiral pipe is positioned at the top of retort, the spiral pipe water outlet be positioned at bottom retort is communicated with the water-in bottom retort, and retort top is provided with the water outlet be communicated with T-shaped pipe;
(3) coil pipe is made up of the spiral pipe of longitudinal rotoforming, and described spiral pipe water outlet is communicated with the water-in bottom retort through pipeline, and retort top is provided with the water outlet be communicated with T-shaped pipe;
(4) coil pipe is made up of the spiral pipe that transverse rotation is shaping, and described spiral pipe water outlet is communicated with the water-in bottom retort through pipeline, and retort top is provided with the water outlet be communicated with T-shaped pipe;
(5) coil pipe is made up of serpentine tube, and the water outlet of described serpentine tube is communicated with the water-in bottom retort through pipeline, and retort top is provided with the water outlet be communicated with T-shaped pipe.
As preferably: described Fenton reagent comprises and pumps into oxygenant in ejector and catalyzer by the road, and described oxygenant and described catalyzer pump in two ejectors of series connection through respective pipeline respectively.
As preferably: the pipeline between described ejector with described coil pipe is connected vacuum breaker; Pipeline between described vacuum breaker with described ejector is connected water escape valve.
As preferably: the bottom of described retort is provided with water escape valve.
Compared with prior art, the utility model has following positively effect:
(1) the mixing efficiency of spiral pipe is high, and power consumption is few.The geometric configuration bending due to spiral pipe makes fluid radial direction produces secondary stream, utilizes secondary stream to carry out periodicity to it and stirs thus realize mixing efficiently.Mixing in coil pipe is that the configuration of power and the coil pipe self relying on intake pump to provide realizes, and compared with stirrer and aerator, save power consumption, and mixed effect is better.
(2) the Fenton reaction times is short, and floor space is little; The residence time (Fenton reaction times) of existing Fenton method sewage treatment equipment is generally 1 ~ 2h.And reach same treatment effect, adopt the treatment time of this reactor to shorten dramatically, only need 15 ~ 30 minutes.The Fenton reaction times shortens the raising meaning unit volume reactor for treatment ability, and therefore at the waste water of process same traffic, the volume ratio existing installation of this reactor is less, can save floor space at least 50%.
(3) save Fenton reagent, reduce running cost.The structure design of reactive system uniqueness improves mixed performance and Fenton reagent service efficiency, and the amount ratio traditional F enton method treatment process of oxidants hydrogen peroxide saves 40 ~ 50%.Because the unit price of hydrogen peroxide is high, consumption is large, and therefore, hydrogen peroxide usage quantity reduces the running cost that obviously can reduce Fenton method process waste water.Simultaneously because the consumption of catalyzer divalent iron salt significantly reduces, water outlet iron level reduces, and significantly can alleviate follow-up neutralizing treatment burden.
(4) there is pressure adjusting function, improve Fenton further and react oxidation efficiency.Owing to having certain pressure in reactor, the amount that the virning activity oxygen produced due to peroxide decomposition in Fenton reaction process dissolves in water is than more under condition of normal pressure, therefore, it is possible to increase active oxygen and Organic Pollutants in Wastewater contact probability, accelerating oxidation reacts, and then improves the oxygenolysis efficiency of Fenton reaction.
(5) simple, easy to operate, the equipment and materials of structure is easy to get inexpensive.The ejector that Fenton reactor relates to, various valve pipe fitting all belong to standardized component, without the need to special processing.Spiral pipe is as mixed cell main in the utility model, structure is very simple, and without the need to special processing, in-site installation is easy, less demanding to coil pipe material, can choose have certain heatproof, withstand voltage and erosion resistance common pipe materials as UPVC, PP, PTFE, stainless steel etc.Compare the guide shell design that existing Fenton fluidized-bed adopts, the water distribution design of different shape, structure greatly simplifies.
Accompanying drawing explanation
Fig. 1 is the first structural representation of Fenton reactive system of the present invention.
Fig. 2 is Fenton reactive system the second structural representation of the present invention.
Fig. 3 is the third structural representation of Fenton reactive system of the present invention.
Fig. 4 is Fenton reactive system of the present invention 4th kind of structural representation.
Fig. 5 is Fenton reactive system vertical helical coil arrangement schematic diagram of the present invention.
Fig. 6 is the plan structure schematic diagram of Fig. 5.
Fig. 7 is the structural representation of Fenton reactive system horizontal spiral coil pipe of the present invention.
Fig. 8 is the plan structure schematic diagram of Fig. 7.
Fig. 9 is the transversary schematic diagram of Fenton reactive system sinuous coil of the present invention.
Figure 10 is the vertical structure schematic diagram of Fenton reactive system sinuous coil of the present invention.
Primary clustering nomenclature:
Intake pump 1, first ejector 21, second ejector 22, first volume pump 31, second volume pump 32, vacuum breaker 4, coil pipe 5, water-in 51, water outlet 52, retort 6, water-in 61, water outlet 62, water escape valve 63, safety valve 71, tensimeter 72, needle-valve 73, water escape valve 8, T-shaped pipe 91, pipeline 92, pipe tunnel 93.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing:
Fig. 1, Fig. 5, Fig. 6 show first embodiment of the utility model Fenton reactor.
Refer to shown in Fig. 1, this Fenton reactor comprises the waste water of pH regulator to 3 and pumps in pipeline 92 by intake pump 1, after two that are communicated with described pipeline 92 the first ejectors 21 be cascaded are mixed with the oxygenant H2O2 30% in the Fenton reagent inputted by the first volume pump 31 and the second volume pump 32 and the catalyst Fe SO4 120g/L solution in Fenton reagent respectively with the second ejector 22, vacuum breaker 4 by the road flows into the vertical helical coil pipe 5 be communicated with vacuum breaker 4 and carries out hybrid reaction, refer to Fig. 5, shown in Fig. 6, the bottom-up outer wall being wrapped in retort 6 of described spiral pipe 5, the water-in 51 of spiral pipe 5 is positioned at the bottom of retort 6, the spiral pipe water outlet 52 that is positioned at retort 6 top is communicated with the water-in 61 bottom retort 6 to downward-extension through pipe tunnel 93, after waste water carries out Fenton reaction in retort 6, the water outlet 62 be communicated with T-shaped pipe 91 is flowed into along retort 6 top, this water outlet 62 is communicated with T-shaped pipe 91 points of two-way through pipeline 92, and a road connection safety valve 71 and another road Bonding pressure table 72 also connect water outlet by the needle-valve 73 of regulation and control retort 6 internal pressure.Waste water total residence time in reactive system is 20min.Retort 6 water outlet alkali lye regulates pH to 8 neutralization precipitation, and mud enters the process of mud workshop, and supernatant liquor enters biochemistry pool.Described second ejector 22 is connected vacuum breaker 4 with on the pipeline between described coil pipe 5; Pipeline between described vacuum breaker 4 with described second ejector 22 is connected water escape valve 8.The bottom of described retort 6 is provided with water escape valve 63.As an alternative, described spiral pipe 5 can also be the outer wall being from up to down wrapped in retort 6, and the water-in 51 of spiral pipe 5 is positioned at the top (not shown) of retort 6.
This ejector 21,22 flow range 0.1 ~ 50m3/h; Spiral pipe 5 caliber between 10 ~ 50mm, length 5 ~ 50m; The retort 6 of being somebody's turn to do for cylindrical, aspect ratio between 1 ~ 2, volume 0.05 ~ 25m3; This tensimeter 72 pressure regulation spectrum is at 0 ~ 10Mpa; Retort water outlet 62 installation site is positioned at retort 6 side, apart from tank body top at a distance of 50 ~ 200mm; Retort 6 top is provided with inspection port (not shown), diameter 200 ~ 500mm.Retort 6 and helical disk 5 tubing matter can adopt PTFE, UPVC, PP, stainless steel etc.; Spiral pipe 5 installation form is for being wrapped in retort outside.
The described method utilizing the emulsifying liquid waste water electro-flotation water outlet of Fenton reactor for treatment Industrial Waste Water Treatments station, the process water yield is 60L/h, and influent quality is as follows: CODcr 10000mg/L, pH 7.4, comprises the following steps:
(1) regulate the PH value of waste water to 3, then pump in pipeline 92, after mixing with the oxygenant 30%H2O2 of Fenton reagent and catalyzer 120g/LFeSO4 solution respectively in the first ejector 21, second ejector 22, flow into spiral pipe 5 and carry out hybrid reaction;
(2) enter after retort 6 stays for some time again and flow out, regulate and control retort 6 pressure by needle-valve 73 and carry out Fenton reaction, waste water total residence time in reactor is 20min;
(3) retort 6 water outlet alkali lye regulates pH to 8, precipitation, and mud enters the (not shown) process of mud workshop, and supernatant liquor enters biochemistry pool (not shown); Record supernatant C ODcr 3950mg/L, calculate Fenton reagent dosage, every m3 waste water consumption 12L30%H2O2,120g/L 50LFeSO4 solution, cut down COD 6.05kg, and the theoretical amount of 30%H2O2 needed for the COD cutting down this tittle is 38.6L, this device is adopted to save oxygenant consumption 68%.
Fig. 2, Fig. 7, Fig. 8 show second embodiment of the utility model Fenton reactor.
Refer to shown in Fig. 2, Fig. 7, Fig. 8, the difference of this embodiment and above-mentioned first embodiment is, coil pipe 5 is made up of the spiral pipe of longitudinal rotoforming, described spiral pipe water outlet 52 is communicated with the water-in 61 bottom retort 6 through pipeline 92, and retort 6 top is provided with the water outlet 62 be communicated with T-shaped pipe 91.
Fig. 3 shows the 3rd embodiment of the utility model Fenton reactor.
Refer to shown in Fig. 3, the difference of this embodiment and above-mentioned first embodiment is, coil pipe 5 is made up of the spiral pipe that transverse rotation is shaping, described spiral pipe water outlet 52 is communicated with the water-in 61 bottom retort 6 through pipeline 92, and retort 6 top is provided with the water outlet 62 be communicated with T-shaped pipe 91.
Fig. 4 shows the 4th embodiment of the utility model Fenton reactor.
Refer to shown in Fig. 4, the difference of this embodiment and above-mentioned first embodiment is, this Fenton reactive system comprises pH regulator to 3 and the waste water being mixed with catalyst sulfuric acid ferrous iron solution in Fenton reagent pumps in pipeline 92 through intake pump 1, the ejector 31 be communicated with described pipeline 92 receives the oxidants hydrogen peroxide solution pumped in Fenton reagent by volume pump 1 and mixes, and then flows into spiral pipe 5 and carries out hybrid reaction.
The described method utilizing Fenton reactive system process Organic Pollutants in Wastewater, comprises the following steps:
(1) regulate the PH value of waste water to 3 and mix with the catalyzer 120g/LFeSO4 solution of Fenton reagent, then pumping in pipeline 92, mixing with the oxygenant 30%H2O2 solution of Fenton reagent again in ejector 31, flowing into spiral pipe 5 and carry out hybrid reaction;
(2) enter regulate and control pressure by needle-valve 73 retort 6 in carry out Fenton reaction;
(3) retort 6 water outlet alkali lye adjust ph, precipitation, mud enters the (not shown) process of mud workshop, and supernatant liquor enters biochemistry pool (not shown).
Refer to shown in Fig. 9 and Figure 10, as an alternative, described coil pipe 5 can also use alternative serpentine tube.
The foregoing is only preferred embodiment of the present utility model, all equalizations done according to the utility model right change and modify, and all should belong to the covering scope of the utility model claim.

Claims (6)

1. a Fenton reactor, is characterized in that: comprise the ejector of sequential communication by the road, coil pipe, retort; Described ejector flows into described coil pipe after receiving the waste water and Fenton reagent pumped into by the road and carries out hybrid reaction, then enter by needle-valve regulate and control pressure retort in carry out Fenton reaction.
2. Fenton reactor according to claim 1, is characterized in that: the rising pipe of described retort divides two-way through T-shaped pipe, and a road connection safety valve and another road Bonding pressure table also connect water outlet by needle-valve.
3. Fenton reactor according to claim 2, is characterized in that: the distributing style of described coil pipe and described retort selects following one:
(1) coil pipe is made up of the spiral pipe that transverse rotation is shaping, the bottom-up outer wall being wrapped in retort of described spiral pipe, the water-in of spiral pipe is positioned at the bottom of retort, the spiral pipe water outlet that is positioned at retort top is communicated with the water-in bottom retort to downward-extension through pipe tunnel, and retort top is provided with the water outlet be communicated with T-shaped pipe;
(2) coil pipe is made up of the spiral pipe that transverse rotation is shaping, described spiral pipe is from up to down wrapped in the outer wall of retort, the water-in of spiral pipe is positioned at the top of retort, the spiral pipe water outlet be positioned at bottom retort is communicated with the water-in bottom retort, and retort top is provided with the water outlet be communicated with T-shaped pipe;
(3) coil pipe is made up of the spiral pipe of longitudinal rotoforming, and described spiral pipe water outlet is communicated with the water-in bottom retort through pipeline, and retort top is provided with the water outlet be communicated with T-shaped pipe;
(4) coil pipe is made up of the spiral pipe that transverse rotation is shaping, and described spiral pipe water outlet is communicated with the water-in bottom retort through pipeline, and retort top is provided with the water outlet be communicated with T-shaped pipe;
(5) coil pipe is made up of serpentine tube, and the water outlet of described serpentine tube is communicated with the water-in bottom retort through pipeline, and retort top is provided with the water outlet be communicated with T-shaped pipe.
4. Fenton reactor according to claim 1, is characterized in that: described Fenton reagent comprises and pumps into oxygenant in ejector and catalyzer by the road, and described oxygenant and described catalyzer pump in two ejectors of series connection through respective pipeline respectively.
5. Fenton reactor according to any one of Claims 1-4, is characterized in that: the pipeline between described ejector with described coil pipe is connected vacuum breaker; Pipeline between described vacuum breaker with described ejector is connected water escape valve.
6. Fenton reactor according to any one of Claims 1-4, is characterized in that: the bottom of described retort is provided with water escape valve.
CN201420128254.7U 2014-03-21 2014-03-21 Fenton reactor Active CN204079570U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105084515A (en) * 2015-08-20 2015-11-25 广东石油化工学院 Novel Fenton reaction device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105084515A (en) * 2015-08-20 2015-11-25 广东石油化工学院 Novel Fenton reaction device
CN105084515B (en) * 2015-08-20 2017-08-25 广东石油化工学院 A kind of Fenton reaction units

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