CN104474862B - A kind of skid-mounted type desulfidation tail gas purifies oxidative absorption liquid recycling device - Google Patents
A kind of skid-mounted type desulfidation tail gas purifies oxidative absorption liquid recycling device Download PDFInfo
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Abstract
The invention discloses a kind of skid-mounted type desulfidation tail gas and purify oxidative absorption liquid recycling device, belong to claus tail-gas clean-up technical field.This device includes reserving liquid tank, it is divided into reaction rear oxidation absorbing liquid fluid reservoir and regeneration rear oxidation absorbing liquid fluid reservoir by U-shaped groove inside reserving liquid tank, the side of reaction rear oxidation absorbing liquid fluid reservoir has heating chamber, heater is installed in heating chamber, reserving liquid tank side has liquid outlet, liquid outlet one end is connected with heating chamber, liquid outlet other end is connected with series connection electrode group by pipeline, series connection electrode group is connected with inlet by pipeline, inlet is opened on reserving liquid tank, and be connected with regeneration rear oxidation absorbing liquid fluid reservoir, reserving liquid tank opposite side has outlet, outlet one end is connected with regeneration rear oxidation absorbing liquid fluid reservoir, the outlet other end is connected with circulating pump.This plant running expense is low, easy to operate, easy access, facilitate that Assembling, sulfur recovery rate are high, by-product is few, device lifetime and uptime length and be suitable to commercial Application.
Description
Technical field
The invention belongs to claus tail-gas clean-up technical field, be specifically related to a kind of skid-mounted type desulfidation tail gas
Purify oxidative absorption liquid recycling device.
Background technology
The H that petroleum refining process produces2The toxicity of the sulfur-containing tail gas such as S is relatively big, at Crouse's sulfur removal technology
Tail gas after reason still contains certain density H2The sulfur-bearing toxic gas such as S, are directly discharged to air
In, air can be caused serious pollution.
At present, various countries are all researching and developing claus tail-gas clean-up technique, sulphur recovery and vent gas treatment energetically
Both technique is all to improve sulfur recovery rate to greatest extent as target, to influence each other in evolution
And infiltration, this trend can become apparent from from now on.Reducing and absorption type side with SCOT method as representative
Method, this method, by completely separable with downstream exhaust gas processing means for the Cross unit of upstream, forms two phases
To independent battery limit (BL), being commonly available to the vent gas treatment of large-scale Cross unit, this method can guarantee that 99.8%
Above total sulfur recovery, this method flow process is complicated, invests higher.SCOT had been carried out again in a large number later
Improvement with perfect, occur in that super SCOT method, low-sulfur SCOT method (LS), tandem SCOT method,
Low temperature SCOT method (LT) etc. improve technique, make total sulfur recovery reach the level of more than 99.95%,
Economic indicator has had and has been obviously improved.In fixed bed reactors, low temperature is carried out with MCRC method as representative
The method of Crouse's (sub-dew point) response type, is characterized in that equipment investment and running cost are relatively low, behaviour
Facilitating, be not suitable for large-scale plant, total sulfur recovery can reach about 99%.Other is such as CBA, CPC
Also this type is belonged to etc. method.Use the Clinsulf-SDP of particular design isotherm formula reactor (interior cold)
Method is a kind of new method developed in low-temperature Claus technique in recent years, uses two-stage reactor
Clinsulf-SDP method can make total sulfur recovery reach 99.2%～99.5%, during this technique is more suited to,
Midget plant.LT claus reaction type is carried out in the liquid phase with Clauspol method as representative
Method, is also more suitable for medium and small device, and total sulfur recovery can reach about 99%, then enters one
Step improves the most relatively difficult, and technological process and equipment also become complicated.This type of method equipment is relatively big, control
System difficulty, corrosion the most seriously and easily block, and solvent loss amount is relatively big, and application is few in recent years.
Lo-Cat method oxidoreduction desulfurization and self-circulation type circulation flow reactor, at the regenerated acid of hydramine subtraction unit
The device of the low pressure operations such as the vent gas treatment of gas disposal and Claus method device is used widely, mesh
The front whole world is built this type of commercial plant of set more than 100, and its scale is usually no more than 5t/d.
In the research coordinating absorbing liquid about biological method regeneration iron salt, regenerative response early stage oxidation Asia
The domestication of ferrum Thiobacillus, cultivates harsh with biofilm operating condition and complicated, air during regenerative response
Stream also can cause coming off of biofilm, and the sulfur that regenerative response generates is mingled with iron ion, has both affected desulfurization effect
Rate, the sulfur product purity also resulting in generation is the highest.Additionally, be the life ensureing thiobacillus ferrooxidant
Thing activity, needs the trace element such as regular replenishment N, P and K at continuous operation, also needs to supplement Fe2+
Solution and adjustment pH are to ensure the balance of regenerative response, and therefore, whole set process is the longest, and process is numerous
Trivial, regeneration iron salt absorbing liquid mixes other elements, brings secondary pollution, be not suitable for commercial production.
Though the method for atmospheric air oxidation regeneration iron salt absorbing liquid is simple to operate, but concentration of oxygen gas is limited, also
Limit regeneration efficiency to a certain extent.
Summary of the invention
Present invention aim to address the problems referred to above and to provide a kind of operating cost low, easy to operate, just
In maintenance, sulfur recovery rate is high, by-product is few, device lifetime and uptime length and be suitable to industry
The skid-mounted type desulfidation tail gas of application purifies oxidative absorption liquid recycling device.
The technical solution adopted in the present invention is:
A kind of skid-mounted type desulfidation tail gas purifies oxidative absorption liquid recycling device, including reserving liquid tank, institute
Stating is divided into reaction rear oxidation absorbing liquid fluid reservoir and regeneration rear oxidation to inhale by U-shaped groove inside reserving liquid tank
Receiving liquid fluid reservoir, the side of described reaction rear oxidation absorbing liquid fluid reservoir has heating chamber, described heating
Indoor location having heaters, has sulphur outlet bottom described reaction rear oxidation absorbing liquid fluid reservoir, described
Reserving liquid tank side has liquid outlet, and described liquid outlet one end is connected with heating chamber, and described liquid outlet is additionally
One end is connected with series connection electrode group by pipeline, and this pipeline described is provided with infusion pump, described series connection
Electrode group is connected with inlet by pipeline, and described series connection electrode group includes closing cylindrical tube, described
Placing cartridge type electrode in closed circular column casing body, described inlet is opened on reserving liquid tank, and with described regeneration
Rear oxidation absorbing liquid fluid reservoir connects, and described reserving liquid tank opposite side has outlet, described outlet one
End is connected with described regeneration rear oxidation absorbing liquid fluid reservoir, and the described outlet other end is with circulating pump even
Connect.
Preferably, the series electrical number of poles in described series connection electrode group is 2～15.
Further, described closing cylindrical tube is made up of top cover, bottom and cylindrical tube, described circle
Column casing body upper end fixed roof, described cylindrical tube lower end fixed bottom cover, described bottom bottom has row
Sulfur mouth, described sulfur outlet is connected with collection sulfur pipeline.
Preferably, connect by pad and bolt are fixing between described top cover, bottom and cylindrical tube；
Described sulfur outlet is connected with described collection sulfur pipeline by flange.
Further, along the height of described cylindrical tube inside described cylindrical tube, near bottom 1/5
Circumferentially being uniformly distributed three pieces of short slabs in the same level at place, described cartridge type electrode is placed on described short
On plate, a length of the 5 of described short slab～25cm, the centrage of described cartridge type electrode and described closed circular
The centrage of column casing overlaps.
Preferably, described cartridge type electrode includes Round Porous shape top cover, porous cup dolly and porous electrode
Plate, the height of described cartridge type electrode is 2.5～5m, and the voltage of described cartridge type electrode is 0.5～3V,
Electric current density is 5～250mA/m2, the height of described porous circular top cover is 40～60mm.
Further, described porous circular top cover upper and lower surface is uniformly distributed aperture, described little
A diameter of the 5 of hole～15mm, the spacing of described aperture is 5～15mm, described porous circular top cover
Upper surface is provided with two metal electrodes, described porous circular top cover lower surface be provided with concentrically 20～
30 regular polygon cannelures, the degree of depth of described regular polygon cannelure is 15～40mm, described just
The width of polygon cannelure is 1.5～5.0mm, the radial distance between described regular polygon cannelure
Equal；Described regular polygon annular groove bottom is installed with contact rod respectively along same diametric(al), described in lead
Torch is counted the most successively by the center of circle, is counted as the contact rod upper end of odd number by wire and the first metal
Electrode couples, and the contact rod upper end being counted as even number is coupled by wire and the second metal electrode, described
The lower end of contact rod is concordant with the bottom land of described regular polygon cannelure.
Preferably, described regular polygon cannelure is positive 6～36 limit shape cannelures.
Further, described porous cup dolly is made up of porous circular bottom plate and pectinate plate, described comb
The quantity of shape plate is the half of regular polygon limit number；Described porous circular bottom plate is uniformly distributed circular hole, institute
Stating a diameter of the 5～15mm of circular hole, the spacing of described circular hole is 5～15mm；Described porous is circular
Having a meter font groove on base plate, described pectinate plate is inserted in meter font groove；On described pectinate plate
Comb between the width that spacing is regular polygon cannelure, the height of described comb is 15～35
mm。
Further, the limit number that quantity is regular polygon of described porous electrode plate and regular polygon annular groove
The product of quantity；The height of described every block of porous electrode plate is equal, and width is incremented by the most successively,
Described porous electrode plate surrounds tubular；The thickness of described porous electrode plate is 1.5～5.0mm, every piece
Uniformly having hole, a diameter of the 5 of described hole～20mm on porous electrode plate, the spacing in described hole is
10～50mm；Described porous circular top cover, the material of porous cup dolly are electrically non-conductive material, described
Porous electrode panel material is titanium, and described porous electrode plate surface scribbles porous carbon, described porous electrode plate
It is divided into positive plate and minus plate；Described positive plate smears cationic resin, the painting of described cationic resin
Smearing layer thickness is 150～500 μm.
The invention have the advantages that
1) this device passes through anodizing i.e. variable valency metal generation electrochemical oxidation, can not use chemistry
Oxidant, and electrochemical reaction operation voltage only need 0.5～3V, the power consumption expense ratioization of electrochemical oxidation
The expense learning oxidation is low, therefore the operating cost of this device is low.
2) in this device, water electrolysis is mainly active oxygen by electrochemical oxidation, so dissolved oxygen is the most sufficient,
Can operate at ambient pressure, by-product is few, various one-tenth in electrolyte before and after can keeping being electrolysed in chemical reactor
Split-phase is to stable, in order to maintain the operation that equipment is normal, long-term.
3) this device utilizes porous titanium material and porous carbon materials to make electrode, and positive plate is through macropore sun
Ion exchange resin smears process, using sodium ethylene diamine tetracetate, diethylene triamine pentacetic acid (DTPA) as compounding ingredient and ferrum
Saline solution mixes, and makes iron ion and H2S fully combines and reacts, to improve the efficiency removing hydrogen sulfide.
Reduce and pollute.
4) the closing cylindrical tube tandem compound that electrode group is several built-in cartridge type electrodes of connecting forms,
It is longer that reacted purification oxidative absorption liquid runs the time in series connection cartridge type electrode group, so electrolysis is quite
Fully, electrolytic regeneration efficiency is up to more than 99.8%, it is adaptable to commercial Application.
5) this device series connection electrode group uses the external reserving liquid tank that is parallel to place, and simple in construction easily operates,
It is prone to Assembling, it is easy to maintenance.
6) the series connection electrode group of this device uses the external reserving liquid tank that is parallel to place, so, almost without sulfur
Simple substance enters in series connection electrode group, will not result in blockage the aperture of porous cartridge type electrode, can maintain equipment
The most properly functioning.
7) this apparatus structure is simple, easy processing and manufacturing.Can be used for industrial promoting the use of.So running
Expense is low, easy to operate, be prone to overhaul, be easily assembled to, by-product is few, length device lifetime and be suitable to work
The advantages such as industry popularization and application.
Accompanying drawing explanation
Fig. 1 purifies oxidative absorption liquid for a kind of skid-mounted type desulfidation tail gas that the embodiment of the present invention 1 provides and follows
Ring utilizes the structural representation of device；
Fig. 2 purifies oxidative absorption liquid for a kind of skid-mounted type desulfidation tail gas that the embodiment of the present invention 1 provides and follows
Ring utilizes porous circular top cover surface structure schematic diagram in device；
Fig. 3 purifies oxidative absorption liquid for a kind of skid-mounted type desulfidation tail gas that the embodiment of the present invention 1 provides and follows
Ring utilizes porous circular top cover lower surface configuration schematic diagram in device；
Fig. 4 purifies oxidative absorption liquid for a kind of skid-mounted type desulfidation tail gas that the embodiment of the present invention 1 provides and follows
Ring utilizes the structural representation of porous cup dolly in device；
Fig. 5 purifies oxidative absorption liquid for a kind of skid-mounted type desulfidation tail gas that the embodiment of the present invention 1 provides and follows
Ring utilizes the structural representation of cartridge type electrode in device；
Fig. 6 be in the embodiment of the present invention 1 Claus tail gases absorb reacted cooperation absorbing liquid composition and
The graph of a relation of regeneration efficiency.
Detailed description of the invention
The present invention is further detailed explanation with embodiment below in conjunction with the accompanying drawings.
Embodiment 1
Referring to figs. 1 through Fig. 5, a kind of skid-mounted type desulfidation tail gas purifies oxidative absorption liquid recycling device,
Including reserving liquid tank.It is divided into reaction rear oxidation absorbing liquid fluid reservoir 2 He by U-shaped groove 3 inside reserving liquid tank
Regeneration rear oxidation absorbing liquid fluid reservoir 6.The side of reaction rear oxidation absorbing liquid fluid reservoir 2 has heating
Room 13, is provided with heater 1, opens bottom reaction rear oxidation absorbing liquid fluid reservoir 2 in heating chamber 13
There is sulphur outlet 12.Reserving liquid tank side has liquid outlet 14, and liquid outlet 14 one end is with heating chamber 13 even
Connecing, other end is connected with series connection electrode group by pipeline, and this pipeline is provided with infusion pump 11.
Series connection electrode group is connected with inlet 7 by pipeline, and inlet 7 is opened on reserving liquid tank, and with regeneration
Rear oxidation absorbing liquid fluid reservoir 6 connects.Reserving liquid tank opposite side has outlet 4, outlet 4 one end
Being connected with regeneration rear oxidation absorbing liquid fluid reservoir 6, outlet 4 other end is connected with circulating pump 5, follows
Ring pump 5 is delivered at each automatic nozzle.
Series connection electrode group includes closing cylindrical tube 9, places cartridge type electrode 8 in closing cylindrical tube 9.
The quantity of electrode of connecting in series connection electrode group is 4.Close cylindrical tube 9 by top cover 18, bottom
28 and cylindrical tube 20 form.Cylindrical tube 20 upper end fixed roof 18, cylindrical tube 20 lower end
Fixed bottom cover 28, is fixed by pad and bolt between top cover 18, bottom 28 and cylindrical tube 20
Connect.Bottom 20 bottom has sulfur outlet 10, and described sulfur outlet 10 is by flange and collection sulfur pipeline
Connect.The internal height along cylindrical tube 20 of cylindrical tube 20, the same water at bottom 1/5
Circumferentially being uniformly distributed three pieces of short slabs in plane, cartridge type electrode 8 is placed on short slab, described short slab
A length of 25cm, the centrage of cartridge type electrode 8 overlaps with the centrage of closed circular column casing 9.
Cartridge type electrode 8 includes porous circular top cover 18, porous cup dolly 16 and porous electrode plate 19.
The height of cartridge type electrode 8 is 2.5m.Porous circular top cover 18 upper and lower surface is uniformly distributed little
Hole 20, a diameter of 10mm of aperture 20, the spacing of aperture 20 is 10mm, aperture 20 minimum aperture
Footpath is less than, by the width of paracentral minimum porous electrode plate 19.Porous circular top cover 18 upper surface
Two metal electrodes are installed.Porous circular top cover 18 lower surface is provided with 20 positive six limits concentrically
Shape cannelure 29, the degree of depth of regular hexagon cannelure 29 is 15mm, regular hexagon cannelure 29
Width is 5.0mm, and the radial distance between regular hexagon cannelure 29 is equal.Regular hexagon cannelure
Contact rod it is installed with respectively along same diametric(al) bottom 29.Contact rod is counted the most successively by the center of circle,
The contact rod upper end being counted as odd number is coupled by wire and the first metal electrode 15, is counted as even number
Contact rod upper end coupled by wire and the second metal electrode 21, the lower end of contact rod is with the most polygon
The bottom land of shape cannelure 21 is concordant.Porous cup dolly 16 is by porous circular bottom plate and pectinate plate 17
Composition.The half that row amount is regular hexagon limit number of pectinate plate 17, so being three rows.Round Porous
Shape base plate is uniformly distributed circular hole 22, a diameter of 10mm of described aperture, and the spacing of described aperture is
10mm.Having a meter font groove in porous circular bottom plate, pectinate plate 17 is inserted in meter font groove,
The quantity of the comb on pectinate plate 17 is regular hexagon cannelure 21 quantity+1, so being 21.
Spacing between pectinate plate 17 is 2mm, and the height of pectinate plate is 35mm.Porous circular top cover 18
Height be 60mm.
The quantity of porous electrode plate 19 is orthohexagonal limit number and regular polygon cannelure 29 quantity
Product, so being 120.The height of every block of porous electrode plate 19 is equal, and width is diametrically
Being incremented by successively, porous electrode plate 19 surrounds tubular.The thickness of porous electrode plate is 1.5mm, every piece
Uniformly having hole 23 on porous electrode plate 19, a diameter of 15mm in hole 23, the spacing in hole 23 is
10mm；Porous circular top cover 18, the material of porous cup dolly 16 are electrically non-conductive material, porous electricity
Pole plate 19 material is titanium, and porous electrode plate 19 surface scribbles porous carbon, and porous electrode plate 19 is divided into
Positive plate and minus plate.Positive plate smears cationic resin, and the smear layer thickness of cationic resin is
500μm。
The operation principle of this device is as follows:
Claus tail gases purifies the reacted absorbing liquid of oxidative absorption and enters reaction rear oxidation absorbing liquid storage
Liquid chamber 2, then flows into heating chamber 13, then after being heated to 95 DEG C by heater 1, through infusion pump 11
From liquid outlet (14) input series connection electrode group, reactant liquor enter first series connection electrode 24 upper end (or
Lower end), after anodizing is reacted, flow out from the lower end (or upper end) of the first series connection electrode 24
Enter the lower end (or upper end) of the second series connection electrode 25, again from the second series electrical after oxidized reaction
The upper end (or lower end) of pole 25 is flowed out, and enters the upper end (or lower end) of the 3rd series connection electrode 26,
The most repeatedly to the 4th series connection electrode 27, the S-shaped broken line of liquid flows, and Claus tail gases purifies oxygen
Change and absorb reacted absorbing liquid in series connection electrode group after cartridge type electrode 8 anodizing, from series connection
The overflow pipe connecting inlet 7 of the cartridge type top of electrodes of electrode group end drains into regeneration rear oxidation and inhales
Receive liquid fluid reservoir 6, deliver at each automatic nozzle through circulating pump defeated 5.Product elemental sulfur is adding
Hot cell 13 bottom precipitation is discharged through sulphur outlet 12 after assembling, and Claus tail gases absorption plant is arranged over
For adjusting the charge door of various material composition ratios in reactant liquor so that from the end cylinder of series connection electrode group
After the electrolyte of the spilling of formula electrode tip is adjusted, the chemical composition of absorbing liquid is clean with Claus tail gases
The chemical composition changing the absorbing liquid before oxidative absorption reaction is identical, absorbs reaction cycle for Claus tail gases
Use.It is 0.15 from the feed liquor speed of inlet 7 that Claus tail gases absorbs reacted absorbing liquid
m3/ h, inlet hydraulic is 0.1MPa.
Claus tail gases absorbs the amount of the material of the main chemical compositions of the cooperation absorbing liquid before reaction
Ratio is: diethylene triamine pentacetic acid (DTPA): ethylenediaminetetraacetic acid: Fe3+Solution: Fe2+Solution: hydrochloric acid solution
It is 0.05～0.25: 0.05～0.35: 1.0～1.5: 0.05～0.15: 10～30.Ke Lao
The ratio of the amount of the material of the main chemical compositions of the reacted absorbing liquid of this tail gas absorption is: divinyl three
Triamine pentaacetic acid: ethylenediaminetetraacetic acid: Fe3+Solution: Fe2+Solution: hydrochloric acid solution be 0.05～
0.40: 0.05～0.45: 1.0～1.5: 1～8: 8～18.Claus tail gases absorbs reacted
The graph of a relation coordinating absorbing liquid composition and regeneration efficiency sees Fig. 6.
Embodiment 2
A kind of skid-mounted type desulfidation tail gas purifies oxidative absorption liquid recycling device, including reserving liquid tank.Storage
It is divided into reaction rear oxidation absorbing liquid fluid reservoir 2 and regeneration rear oxidation to absorb by U-shaped groove 3 inside liquid case
Liquid fluid reservoir 6.The side of reaction rear oxidation absorbing liquid fluid reservoir 2 has heating chamber 13, heating chamber
Heater 1 is installed in 13, bottom reaction rear oxidation absorbing liquid fluid reservoir 2, has sulphur outlet 12.
Reserving liquid tank side has liquid outlet 14, and liquid outlet 14 one end is connected with heating chamber 13, other end
It is connected with series connection electrode group by pipeline, this pipeline is provided with infusion pump 11.Series connection electrode group is led to
Piping is connected with inlet 7, and inlet 7 is opened on reserving liquid tank, and with regeneration rear oxidation absorbing liquid
Fluid reservoir 6 connects.Reserving liquid tank opposite side has outlet 4, outlet 4 one end and regeneration rear oxidation
Absorbing liquid fluid reservoir 6 connects, and outlet 4 other end is connected with circulating pump 5, and circulating pump 5 is delivered to
At each automatic nozzle.
Series connection electrode group includes closing cylindrical tube 9, places cartridge type electrode 8 in closing cylindrical tube 9.
The quantity of electrode of connecting in series connection electrode group is 4.Close cylindrical tube 9 by top cover 28, bottom
19 and cylindrical tube 20 form.Cylindrical tube 20 upper end fixed roof 28, cylindrical tube 20 lower end
Fixed bottom cover 19, is fixed by pad and bolt between top cover 28, bottom 19 and cylindrical tube 20
Connect.Bottom 20 bottom has sulfur outlet 10, and described sulfur outlet 10 is by flange and collection sulfur pipeline
Connect.The internal height along cylindrical tube 20 of cylindrical tube 20, the same water at bottom 1/5
Circumferentially being uniformly distributed three pieces of short slabs in plane, cartridge type electrode 8 is placed on short slab, described short slab
A length of 15cm, the centrage of cartridge type electrode 8 overlaps with the centrage of closed circular column casing 9.
Cartridge type electrode 8 includes porous circular top cover 18, porous cup dolly 16 and porous electrode plate 19.
The height of cartridge type electrode 8 is 1.0m.Porous circular top cover 18 upper and lower surface is uniformly distributed little
Hole 20, a diameter of 5mm of aperture 20, the spacing of aperture 20 is 15mm, aperture 20 minimum aperture
Footpath is less than, by the width of paracentral minimum porous electrode plate 19.Porous circular top cover 18 upper surface
Two metal electrodes are installed.Porous circular top cover 18 lower surface is provided with 20 positive six limits concentrically
Shape cannelure 29, the degree of depth of regular hexagon cannelure 29 is 20mm, regular hexagon cannelure 29
Width is 1.5mm, and the radial distance between regular hexagon cannelure 29 is equal.Regular hexagon cannelure
Contact rod it is installed with respectively along same diametric(al) bottom 29.Contact rod is counted the most successively by the center of circle,
The contact rod upper end being counted as odd number is coupled by wire and the first metal electrode 15, is counted as even number
Contact rod upper end coupled by wire and the second metal electrode 21, the lower end of contact rod is with the most polygon
The bottom land of shape cannelure 21 is concordant.Porous cup dolly 16 is by porous circular bottom plate and pectinate plate 17
Composition.The half that row amount is regular hexagon limit number of pectinate plate 17, so being three rows.Round Porous
Shape base plate is uniformly distributed circular hole 22, a diameter of 5mm of described aperture, and the spacing of described aperture is 15mm.
Having a meter font groove in porous circular bottom plate, pectinate plate 17 is inserted in meter font groove, pectination
The quantity of the comb on plate 17 is regular hexagon cannelure 21 quantity+1, so being 21.Pectination
Spacing between plate 17 is 4mm, and the height of pectinate plate is 15mm.The height of porous circular top cover 18
For 40mm.
The quantity of porous electrode plate 19 is orthohexagonal limit number and regular polygon cannelure 29 quantity
Product, so being 120.The height of every block of porous electrode plate 19 is equal, and width is diametrically
Being incremented by successively, porous electrode plate 19 surrounds tubular.The thickness of porous electrode plate is 5.0mm, every piece
Uniformly having hole 23 on porous electrode plate 19, a diameter of 20mm in hole 23, the spacing in hole 23 is
50mm；Porous circular top cover 18, the material of porous cup dolly 16 are electrically non-conductive material, porous electricity
Pole plate 19 material is titanium, and porous electrode plate 19 surface scribbles porous carbon, and porous electrode plate 19 is divided into
Positive plate and minus plate.Positive plate smears cationic resin, and the smear layer thickness of cationic resin is
150μm。
This device passes through anodizing i.e. variable valency metal generation electrochemical oxidation, can not use chemical oxidation
Agent, and electrochemical reaction operation voltage only need 0.5～3V, the power consumption expense of electrochemical oxidation compares chemical oxygen
The expense changed is low, therefore the operating cost of this device is low.In this device, water electrolysis is mainly by electrochemical oxidation
Active oxygen, so dissolved oxygen is the most sufficient, can operate at ambient pressure, and by-product is few, and chemistry can be kept anti-
Answer in device before and after electrolysis various compositions in electrolyte the most stable, in order to maintain the fortune that equipment is normal, long-term
OK.This device utilizes porous titanium material and porous carbon materials to make electrode, and positive plate is through macroporous cation
Process smeared by resin, molten with iron salt using sodium ethylene diamine tetracetate, diethylene triamine pentacetic acid (DTPA) as compounding ingredient
Liquid mixes, and makes iron ion and H2S fully combines and reacts, to improve the efficiency removing hydrogen sulfide.Subtract
Of low pollution.Series connection electrode group is that the closing cylindrical tube tandem compound of several built-in cartridge type electrodes forms,
It is longer that reacted purification oxidative absorption liquid runs the time in series connection cartridge type electrode group, so electrolysis is quite
Fully, electrolytic regeneration efficiency is up to more than 99.8%, it is adaptable to commercial Application.This device series connection electrode group
The external reserving liquid tank that is parallel to is used to place, simple in construction, easily operate, be easily assembled, it is easy to maintenance.This dress
The series connection electrode group put uses the external reserving liquid tank that is parallel to place, so, enter series connection almost without sulfur simple substance
In electrode group, the aperture of porous cartridge type electrode will not be resulted in blockage, equipment can be maintained the most normal
Run.This apparatus structure is simple, easy processing and manufacturing.Can be used for industrial promoting the use of.So running cost
With low, easy to operate, be prone to maintenance, be prone to that Assembling, by-product be few, length device lifetime and being suitable to
The advantages such as commercial introduction application.
It should be noted last that, above example is only in order to illustrate technical scheme rather than limit
System, although the present invention being described in detail with reference to preferred embodiment, the ordinary skill people of this area
Member should be appreciated that and can modify technical scheme or equivalent, without deviating from
The spirit and scope of technical solution of the present invention, it all should be contained ought in scope of the presently claimed invention
In.
Claims (10)
- null1. a skid-mounted type desulfidation tail gas purifies oxidative absorption liquid recycling device，It is characterized in that，Including reserving liquid tank，It is divided into reaction rear oxidation absorbing liquid fluid reservoir and regeneration rear oxidation absorbing liquid fluid reservoir by U-shaped groove inside described reserving liquid tank，The side of described reaction rear oxidation absorbing liquid fluid reservoir has heating chamber，In described heating chamber, heater is installed，Sulphur outlet is had bottom described reaction rear oxidation absorbing liquid fluid reservoir，Described reserving liquid tank side has liquid outlet，Described liquid outlet one end is connected with heating chamber，Described liquid outlet other end is connected with series connection electrode group by pipeline，On described pipeline, infusion pump is installed，Described series connection electrode group is connected with inlet by pipeline，Described series connection electrode group includes closing cylindrical tube，Cartridge type electrode is placed in described closed circular column casing body，Described inlet is opened on reserving liquid tank，And be connected with described regeneration rear oxidation absorbing liquid fluid reservoir，Described reserving liquid tank opposite side has outlet，Described outlet one end is connected with described regeneration rear oxidation absorbing liquid fluid reservoir，The described outlet other end is connected with circulating pump.
- Skid-mounted type desulfidation tail gas the most according to claim 1 purifies oxidative absorption liquid recycling device, it is characterised in that the series electrical number of poles in described series connection electrode group is 2～15.
- Skid-mounted type desulfidation tail gas the most according to claim 2 purifies oxidative absorption liquid recycling device, it is characterized in that, described closing cylindrical tube is made up of top cover, bottom and cylindrical tube, described cylindrical tube upper end fixed roof, described cylindrical tube lower end fixed bottom cover, described bottom bottom has sulfur outlet, and described sulfur outlet is connected with collection sulfur pipeline.
- Skid-mounted type desulfidation tail gas the most according to claim 3 purifies oxidative absorption liquid recycling device, it is characterised in that connect by pad and bolt are fixing between described top cover, bottom and cylindrical tube；Described sulfur outlet is connected with described collection sulfur pipeline by flange.
- Skid-mounted type desulfidation tail gas the most according to claim 2 purifies oxidative absorption liquid recycling device, it is characterized in that, along the height of described cylindrical tube inside described cylindrical tube, three pieces of short slabs circumferentially it are uniformly distributed in same level at bottom 1/5, described cartridge type electrode is placed on described short slab, a length of the 5 of described short slab～25cm, the centrage of described cartridge type electrode overlaps with the centrage of described closed circular column casing.
- Skid-mounted type desulfidation tail gas the most according to claim 2 purifies oxidative absorption liquid recycling device, it is characterized in that, described cartridge type electrode includes Round Porous shape top cover, porous cup dolly and porous electrode plate, the height of described cartridge type electrode is 2.5～5m, the voltage of described cartridge type electrode is 0.5～3V, and electric current density is 5～250mA/m2, the height of described porous circular top cover is 40～60mm.
- Skid-mounted type desulfidation tail gas the most according to claim 6 purifies oxidative absorption liquid recycling device, it is characterized in that, described porous circular top cover upper and lower surface is uniformly distributed aperture, a diameter of the 5 of described aperture～15mm, the spacing of described aperture is 5～15mm, described porous circular top cover upper surface is provided with two metal electrodes, described porous circular top cover lower surface is provided with 20～30 regular polygon cannelures concentrically, the degree of depth of described regular polygon cannelure is 15～40mm, the width of described regular polygon cannelure is 1.5～5.0mm, radial distance between described regular polygon cannelure is equal；Described regular polygon annular groove bottom is installed with contact rod respectively along same diametric(al), described contact rod is counted the most successively by the center of circle, the contact rod upper end being counted as odd number is coupled by wire and the first metal electrode, the contact rod upper end being counted as even number is coupled by wire and the second metal electrode, and the lower end of described contact rod is concordant with the bottom land of described regular polygon cannelure.
- Skid-mounted type desulfidation tail gas the most according to claim 7 purifies oxidative absorption liquid recycling device, it is characterised in that described regular polygon cannelure is positive 6～36 limit shape cannelures.
- Skid-mounted type desulfidation tail gas the most according to claim 6 purifies oxidative absorption liquid recycling device, it is characterised in that described porous cup dolly is made up of porous circular bottom plate and pectinate plate, and the quantity of described pectinate plate is the half of regular polygon limit number；Described porous circular bottom plate is uniformly distributed circular hole, a diameter of the 5 of described circular hole～15mm, and the spacing of described circular hole is 5～15mm；Having a meter font groove in described porous circular bottom plate, described pectinate plate is inserted in meter font groove；The width that the spacing between comb is regular polygon cannelure on described pectinate plate, the height of described comb is 15～35mm.
- 10. purify oxidative absorption liquid recycling device according to the skid-mounted type desulfidation tail gas described in claim 6 or 7, it is characterised in that the limit number that quantity is regular polygon of described porous electrode plate and the product of regular polygon annular groove quantity；The height of described every block of porous electrode plate is equal, and width is incremented by the most successively, and described porous electrode plate surrounds tubular；The thickness of described porous electrode plate is 1.5～5.0mm, and every block of porous electrode plate uniformly has hole, a diameter of the 5 of described hole～20mm, and the spacing in described hole is 10～50mm；Described porous circular top cover, the material of porous cup dolly are electrically non-conductive material, and described porous electrode panel material is titanium, and described porous electrode plate surface scribbles porous carbon, and described porous electrode plate is divided into positive plate and minus plate；Described positive plate smears cationic resin, and the smear layer thickness of described cationic resin is 150～500 μm.
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