CN209193747U - A kind of pair of cis-butenedioic anhydride sewage handle and the system of by-product fuel gas - Google Patents
A kind of pair of cis-butenedioic anhydride sewage handle and the system of by-product fuel gas Download PDFInfo
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- CN209193747U CN209193747U CN201821877430.1U CN201821877430U CN209193747U CN 209193747 U CN209193747 U CN 209193747U CN 201821877430 U CN201821877430 U CN 201821877430U CN 209193747 U CN209193747 U CN 209193747U
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Abstract
The utility model proposes the systems that a kind of pair of cis-butenedioic anhydride sewage handle simultaneously by-product fuel gas, the system includes stripper, first stage reactor, flotation tank and second stage reactor, atmospheric stripping, light electrolysis and Anaerobic Treatment can successively be carried out to cis-butenedioic anhydride sewage, to remove most COD, organic acid and heterocyclic compound in cis-butenedioic anhydride sewage, greatly improve the biodegradability index of sewage, the water inlet index for meeting common biochemical treatment reaches environment protection emission qualification.In the preferred technical solution of the utility model, sludge recovery system and liquid packing are also added, can be realized the collection of solids and the recycling of biogas.
Description
Technical field
The utility model relates to technical field of industrial equipment, and in particular to a kind of pair of cis-butenedioic anhydride sewage handle and by-product combustion
Expect the system of gas, and the method using system processing processing cis-butenedioic anhydride sewage.
Background technique
Cis-butenedioic anhydride, also known as maleic anhydride, maleic anhydride, 2,5- furasndione etc. are orthorhombic system colourless needles or piece
Shape crystal.There is intense stimulus smell, is dissolved in ethyl alcohol, ether and acetone, is insoluble in petroleum ether and carbon tetrachloride.Mainly for the production of
Unsaturated polyester resin, alkyd resin, pesticide malathion, higher effective and lower toxic pesticide 4049, long-acting iodine amine raw material.It is also to apply
Material, maleic rosin, poly-maleic anhydride, cis-butenedioic anhydride-styrol copolymer comonomer, can be used as production ink addition agent, paper making additive,
The Organic Chemicals of plasticizer, tartaric acid, fumaric acid, tetrahydrofuran etc..
Existing maleic anhydride production uses benzene method or normal butane method technique, and the recovery process of cis-butenedioic anhydride generally uses water absorption or solvent
It absorbs.The largely sour water containing fumaric acid, acrylic acid can be generated in water absorption technique, and water absorption technique is suitable only for interval and grasps
Make, is unfavorable for being mass produced.At present under the pressure of environmental protection pressure, which gradually eliminates.Current main maleic anhydride production technique
Based on solvent absorption, solvent is mainly DIBE/DBP.It is all to cause cis-butenedioic anhydride raw based on washing during solvent reclamation
Waste water during production contains part acrylic acid, acetic acid, cis-butenedioic anhydride, butanol and partial solvent (DIBE, DBP).Wherein DBP (adjacent benzene
Dibutyl carboxylic acid) it is the compound with phenyl ring, DIBE (hexahydro-phthalic acid diisobutyl ester) is hexa-atomic with being saturated
The compound of ring, the sewage are poor for conventional sewage treatment process biodegradability, cannot complete open loop, oil-based solvent therein
And organic acid etc. may cause microorganism poisoning to common water treatment micro-organism, cannot be located using common anaerobic and aerobic method
Reason.
If cis-butenedioic anhydride sewage is handled using other methods, as the methods of electrochemical oxidation process, photocatalytic oxidation all can not
Obtain satisfied effect；It is economically unreasonable if needing to consume more fuel gas using conventional incineration method；Using single
Although wet oxidation process can play certain effect, COD content is still higher, and process generate exhaust gas be not easy to locate
Reason, generates many solid wastes using multiple-effect evaporation method and gas floatation process again.In other field of wastewater, such as MTO spent lye, dyeing
High concentrated organic wastewater processing aspect, generally takes wet oxidation process to be pre-processed, but still can be accompanied by the generation of exhaust gas.
In consideration of it, special propose the utility model.
Utility model content
The purpose of this utility model is to provide the systems that a kind of pair of cis-butenedioic anhydride sewage handle simultaneously by-product fuel gas.
To achieve the above object, the technical solution of the utility model is as follows:
The utility model relates to a kind of pair of cis-butenedioic anhydride sewage handle and by-product fuel gas system, the system comprises according to
Stripper, first stage reactor, flotation tank and the second stage reactor of secondary connection；
Wherein, the stripper is used to carry out cis-butenedioic anhydride sewage atmospheric stripping, and the property of will volatilize organic matter is dirty from the cis-butenedioic anhydride
It is separated in water, obtains the first production water；
The first stage reactor is used to the larger molecular organics in the first production water being decomposed into small organic molecule, obtains
Water is produced to second；
The flotation tank is used to separate the graininess gluing object in the second production water, obtains third and produces water；
The second stage reactor, which is used to produce water to the third, carries out Anaerobic Treatment, and organic matter is decomposed into CO2And CH4, real
The qualified discharge of existing cis-butenedioic anhydride sewage.
Preferably, the main body of the first stage reactor is yin-yang haydite corrosion cell.
Preferably, the second stage reactor is UASB reactor.
Preferably, the second stage reactor is composed in series by more than two UASB reactors.
It preferably, further include liquid packing, the liquid packing is connect with the gas outlet of the second stage reactor, is produced for preventing
Raw biogas inversely enters second stage reactor, and the biogas of collection is carried out output utilization.
It preferably, further include sedimentation basin, the sedimentation basin is connect with the outlet of the first stage reactor, described for collecting
Solids in first stage reactor.
It preferably, further include sludge concentration tank, the sludge concentration tank is connect with the outlet of the flotation tank, for collecting
Solids in the flotation tank.
Preferably, the sludge concentration tank is also connect with the outlet of the sedimentation basin, for from the sedimentation basin and
Solids in the flotation tank is concentrated.
It preferably, further include sludge dewatering equipment, the sludge dewatering equipment is connect with the outlet of the sludge concentration tank, is used for
The solids of collection is dehydrated.
It preferably, further include recoil sedimentation basin, for carrying out cleaning and regeneration to the first stage reactor.
The utility model has the beneficial effects that
The utility model provides the system that a kind of pair of cis-butenedioic anhydride sewage handle simultaneously by-product fuel gas, which includes vapour
Stripper, first stage reactor, flotation tank and second stage reactor can successively carry out atmospheric stripping, light electrolysis to cis-butenedioic anhydride sewage and detest
Oxygen processing, to remove most COD, organic acid and heterocyclic compound in cis-butenedioic anhydride sewage, keeps the biodegradability index of sewage big
Width improves, and meets the water inlet index of common biochemical treatment, reaches environment protection emission qualification.And it compared with other processing methods, adopts
Equipment operating cost can be reduced one third or more with the processing system of the utility model.
In the preferred technical solution of the utility model, sludge recovery system and liquid packing are also added, can be realized solid
The collection of body object and the recycling of biogas.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is the structural schematic diagram for handle to cis-butenedioic anhydride sewage the simultaneously system of by-product fuel gas.
Fig. 2 is the process flow diagram using system processing cis-butenedioic anhydride sewage.
In figure:
1- stripper；2- first stage reactor；3- flotation tank；Bis- sections of first-stage reactors of 41-；Bis- sections of second reactors of 42-；5-
Liquid packing；6- sedimentation basin；7- sludge concentration tank；8- sludge dewatering equipment；9- recoil sedimentation basin.
Specific embodiment
To keep the purpose of this utility model, technical solution and advantage clearer, below by the technology to the utility model
Scheme is described in detail.Obviously, the described embodiments are only a part of the embodiments of the utility model, rather than all
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are not before making creative work
Obtained all other embodiment is put, the range that the utility model is protected is belonged to.
As shown in Figure 1, the utility model embodiment be related to it is a kind of to cis-butenedioic anhydride sewage carry out processing and by-product fuel gas system
System, system includes sequentially connected stripper 1, first stage reactor 2, flotation tank 3 and second stage reactor.Absorbed with conventional water or
Solvent technology processing method is compared, more preferable to the treatment effect of cis-butenedioic anhydride sewage using the system of the utility model, and has not been generated
Malicious harmful exhaust.And sewage treatment expense can be greatly lowered in by-product fuel gas in treatment process.
Wherein, stripper 1 is used to carry out atmospheric stripping to the cis-butenedioic anhydride sewage entered in tower.Technique is passed through into stripping tower 1
Wind makes volatile organic matter, together from overhead extraction, realize the separation of volatile organic matter in company with vapor, obtain the first production
Water.
First stage reactor 2, which is used to produce the larger molecular organics in water for first, is decomposed into small organic molecule, obtains second
Produce water.Filler is housed, the compound with phenyl ring such as larger molecular organics such as acrylic acid is sent out in filler surface in first stage reactor 2
Raw chain rupture and ring-opening reaction, realize the decomposition of larger molecular organics, improve the biodegradability of sewage, make B/C value reach 0.4 with
On.B/C value refers to the ratio of biochemical oxygen demand (BOD) (BOD5) Yu COD (COD), the biodegradability of the more big then waste water of ratio
Better.It is generally acknowledged that biochemical reaction can be carried out when B/C value > 0.3.
In one embodiment of the utility model, the main body of first stage reactor 2 is yin-yang haydite corrosion cell.Work as yin-yang
When haydite corrosion cell is immersed in the water: the iron-based class of polycrystalline in battery becomes anode, and carbon-based then to become cathode, electrode reaction is such as
Under:
Anode (Fe): Fe → Fe2++2e E0=-0.44V；
Cathode (acid oxygen free condition): 2H++2e→2[H]→H2 E0(H+/H2)=0V；
Acid aerobic condition: O2+4H++4e→2H2O E0(O2)=1.23V；
Neutral aerobic condition: O2+2H2O+4e→4OH- E0=0.40V.
The nascent state [H] and hydroxyl radical free radical generated in electrochemical reaction has larger chemical activity, can destroy substance
Structure, such as azo group makes the rupture of the group of noxious material or difficult decomposed substance, and macromolecular is decomposed into small molecule, increases dirty
The B/C value of water, improves the biodegradability of sewage.In addition, iron is active metal, in acid condition, its reducing power can make
Certain organic matters are reduced to the lesser reduction-state of toxicity, while some macromolecular substances can also be made to degrade, and have decoloration and mention
The effect of the biodegradability of high waste water.Under oxygenation state, Fe2+And Fe3+When pH is 7~8, chelating balance is broken, and is formed
Fe (OH)3It is extremely unstable and then hydrolyze, the complexing agent with adhesivity is formed, to play flocculation.
Yin-yang haydite corrosion cell is the core of 2 technology of first stage reactor, and yin-yang haydite corrosion cell is as electrode material
A kind of novel corroding electrode technology, have iron charcoal integration, fusion catalyst, micropore framework formula alloy structure, specific surface area
Greatly, the features such as light specific gravity, HRT are small, occupied area is small.Act on waste water, can efficiently remove and reduce coloration, improve it is biochemical
Property, treatment effect is stable, can avoid phenomena such as filler in operational process is passivated, is hardened.And due to extraordinary electrode catalyst
The addition (rare-earth like mine) of (10~50nm of nanoscale) is improved CODcr, B/C value and the removal effect of coloration
It is apparently higher than other Iron carbon reduction technologies.
It is equipped with air floatation machine in flotation tank 3, using air-dissolving air-float, that is, utilizes the spy of water different solubility at various pressures
Property, the second production water pressurize and aerating, increases the Underwater sound field of water, is discharged in normal pressure, air is precipitated to be formed
Minute bubbles are adhered on impurity wadding grain, wadding grain global density are caused to be less than water and rise, to realize point of impurity wadding grain and water
From, obtain third produce water.
It is to be appreciated that third, which produces water, remains as high concentrated organic wastewater, if using physical chemistry method or directly using aerobic
Processing, because the problems such as operating cost is high, energy consumption is big is worthless.Therefore using low energy consumption, removal efficiency is high and can recycle
The anaerobic treatment process of large amount of biomass energy is a kind of optimal selection.During anaerobic degradation, the first stage utilizes height
Larger molecular organics are decomposed into small molecule by exoenzyme.The hydrolysate of these small molecules can be dissolved in water and through cell
Film is utilized by bacterium.Then the compound of small molecule is more simple in the cellular transformation of zymogenous bacteria (i.e. acidification bacterium)
Compound is simultaneously secreted at cell.Waving property of primary product fatty acid (write a Chinese character in simplified form and make VFA), alcohols, the lactic acid, dioxy in this stage
Change carbon, hydrogen, ammonia, hydrogen sulfide etc..It is converted further producing the product of acetic acid stage on last stage as acetic acid, hydrogen, carbonic acid
And new cellular material.Finally methane, carbon dioxide and new are converted by the above substance using microorganism in the methane phase stage
Cellular material.The utility model is used to produce water to third using second stage reactor carries out Anaerobic Treatment, the small molecule after open loop
Organic matter is contacted with microorganism, generates CH4It measures very high biogas to be discharged at the top of the second stage reactor, treated cis-butenedioic anhydride sewage energy
Enough realize qualified discharge.
The main component of biogas is methane, usually of the total volume 60~70%, followed by carbon dioxide, accounts for about total volume
20~30%, remaining be hydrogen sulfide, nitrogen, hydrogen and carbon monoxide etc. other about of the total volume 5% or so.The calorific value of methane is very
Height reaches 36840kJ/m3, carbon dioxide and water are only remained when methane completely burned, and release thermal energy, be a kind of clean fuel.By
In the difference of methane content of bilogas, the calorific capacity of biogas is about in 20930~25120kJ/m3, ignition temperature is 88 DEG C, combustion
Temperature is burnt up to 1400 DEG C.
In one embodiment of the utility model, second stage reactor is upflow anaerobic sludge blanket process (Upflow
Anaerobic Sludge Bed), abbreviation UASB reactor.In treatment process, third production water is uniformly introduced to the bottom of reactor
Portion, upwardly through the Sludge Bed comprising granule sludge or floc sludge.Anaerobic reaction generation is contacted in waste water and mud granule
Process.The biogas (mainly methane and carbon dioxide) generated under anaerobic state causes internal circulation, this is for particle
The formation and maintenance of sludge are advantageous.It is attached on mud granule, attachment and does not adhere in some gases that sludge blanket is formed
Gas rises to reactor head.The sludge for rising to surface hits the bottom of phase reactor, causes the sludge of bubbles attached
Wadding body degassing.After bubble release, mud granule will be deposited to the surface of Sludge Bed, and attachment and the gas not adhered to are collected into
The collection chamber of the three phase separator of reactor head.The reactor has anti-shock loading strong, mud, water, gas three phase separation effect
The advantages of good, low energy consumption, and anaerobic sludge stablizes growth.
Further, second stage reactor can be composed in series by more than two UASB reactors.Such as it is successively set in Fig. 1
There are two sections of first-stage reactors 41 and two sections of second reactors 42, carries out multistep treatment for producing water to third.
In one embodiment of the utility model, which further includes liquid packing 5.What liquid packing 5 was used to prevent
Biogas inversely enters second stage reactor, protects to second stage reactor, and the biogas of collection is carried out output utilization.In Fig. 1
In, liquid packing 5 is connect with the gas outlet of two sections of first-stage reactors 41 and two sections of second reactors 42 respectively.
In one embodiment of the utility model, which further includes sedimentation basin 6, sedimentation basin 6 and first stage reactor 2
Outlet connection, for collecting the solids in first stage reactor 2.The dross that stripper 1 generates also enters in sedimentation basin after 6 progress
Continuous processing.
In one embodiment of the utility model, which further includes sludge concentration tank 7, sludge concentration tank 7 and air bearing
The outlet in pond 3 connects, for collecting the solids in flotation tank 3.It is preferred that sludge concentration tank 7 is also connect with the outlet of sedimentation basin 6,
For the solids in sedimentation basin 6 and flotation tank 3 to be concentrated.
In one embodiment of the utility model, which further includes sludge dewatering equipment 7, sludge dewatering equipment 7 and sludge
The outlet of concentration basin 7 connects, for being dehydrated to the solids of collection.Other devices are transported to outside dewatered solids to carry out
Later use.
In one embodiment of the utility model, which further includes recoil sedimentation basin 9, for first stage reactor 2
Carry out cleaning and regeneration.Recoil sedimentation basin 9 periodically backwashes the filler of first stage reactor 2, restores the fortune of first stage reactor 2
Line efficiency prolongs its service life.
System provided by the utility model is used to handle cis-butenedioic anhydride sewage, the course of work is as shown in Fig. 2, specific as follows:
(1) cis-butenedioic anhydride sewage enters stripper 1, and technique wind is passed through into stripping tower 1 and carries out atmospheric stripping, volatile organic matter
In company with vapor together from overhead extraction, the first production water is obtained.
(2) first production water enter in first stage reactor 2, and the main body of first stage reactor 2 is yin-yang haydite corrosion cell, one
The chain rupture and ring-opening reaction that larger molecular organics occur in section reactor 2, realize the decomposition of larger molecular organics, improve sewage
Biodegradability obtains the second production water.
It is additionally provided with the recoil sedimentation basin 9 connecting with first stage reactor 2, the mating back-purge system in pond, periodically to one
The filler of section reactor 2 is backwashed.
(3) it after producing water progress pH value adjusting to second, is introduced into flotation tank 3, is further removed under air floatation machine effect
The suspended matter and grease in water are removed, third is obtained and produces water.
(4) third production water enters second stage reactor progress Anaerobic Treatment, and the small organic molecule after open loop connects with microorganism
Touching generates CH4It measures very high biogas to be discharged at the top of second stage reactor, realizes sewage qualified discharge.Second stage reactor is UASB
More than two concatenated forms of UASB reactor can be used in reactor.
In addition, the system has the function of sludge recycling and methane recovery.The dross and first stage reactor generated by stripper 1
2 sediments generated enter sedimentation basin 6 and precipitate, and are concentrated subsequently into sludge concentration tank 7.It is generated in flotation tank 3
Dross also enters sludge concentration tank 7, and the sludge (moisture content 98%) of concentration enters sludge dewatering equipment 8 (folded spiral shell dewaterer), makes
Sludge is further dehydrated to moisture content up to 80% or so, and the mud cake of formation is transported outward or recycled.
After passing through liquid packing 5 by the biogas being discharged at the top of second stage reactor, carry out biogas utilization can be exported.
Embodiment 1
The cis-butenedioic anhydride sewage of certain factory discharge is handled, Inlet and outlet water water quality is as shown in table 1.
Table 1
| Water quality parameter | Water inlet | Water outlet |
| COD (CODCr)(mg/L) | 30000~50000 | 1200 |
| Biochemical oxygen demand (BOD) (BOD5)(mg/L) | ≤10000 | ≤500 |
| Suspended matter (mg/L) | ≤300 | ≤10 |
| NH3-N(mg/L) | ≤60 | 0 |
| Petroleum-type (mg/L) | ≤50 | 0 |
| PH value (dimensionless) | 1~2 | 7~8 |
| Salt content (mg/L) | ≤8000 | ≤100 |
| Water temperature (DEG C) | ≤40 | Room temperature |
Composition detection is carried out to the biogas as derived from liquid packing, constituent content is as shown in table 2.
Table 2
| Gas | Volume content | Average value |
| Methane (CH4) | 50~75 | 65 |
| Carbon dioxide (CO2) | 15~45 | 28 |
| Nitrogen (N2) | 0~10 | 6 |
| Hydrogen (H2) | 0~2 | 0.4 |
| Oxygen (O2) | 0~2 | 0.3 |
In conjunction with Tables 1 and 2, illustrate to remove most in cis-butenedioic anhydride sewage using system provided by the utility model
COD and organic matter, reach environmental emission standard.The content of the methane in sewage gas of output is higher simultaneously, is used as fuel gas energy
The expense of sewage treatment is enough greatly lowered.
Above description is only a specific implementation of the present invention, but the protection scope of the utility model is not limited to
In this, anyone skilled in the art within the technical scope disclosed by the utility model, can readily occur in variation
Or replacement, it should be covered within the scope of the utility model.Therefore, the protection scope of the utility model should be with the power
Subject to the protection scope that benefit requires.
Claims (10)
1. a kind of pair of cis-butenedioic anhydride sewage handle and the system of by-product fuel gas, which is characterized in that the system comprises successively connect
Stripper, first stage reactor, flotation tank and the second stage reactor connect；
Wherein, the stripper is used to carry out atmospheric stripping to cis-butenedioic anhydride sewage, and the property of will volatilize organic matter is from the cis-butenedioic anhydride sewage
Separation, obtains the first production water；
The first stage reactor is used to the larger molecular organics in the first production water being decomposed into small organic molecule, obtains the
Two produce water；
The flotation tank is used to separate the graininess gluing object in the second production water, obtains third and produces water；
The second stage reactor, which is used to produce water to the third, carries out Anaerobic Treatment, and organic matter is decomposed into CO2And CH4, realize suitable
The qualified discharge of acid anhydride sewage.
2. system according to claim 1, which is characterized in that the main body of the first stage reactor is yin-yang haydite corrosion electricity
Pond.
3. system according to claim 1, which is characterized in that the second stage reactor is UASB reactor.
4. system according to claim 3, which is characterized in that the second stage reactor is by more than two UASB reactor strings
Connection composition.
5. system according to claim 1, which is characterized in that further include liquid packing, the liquid packing is anti-with described two sections
The gas outlet of device is answered to connect, the biogas for preventing inversely enters second stage reactor, and the biogas of collection is exported
It utilizes.
6. system according to claim 1, which is characterized in that further include sedimentation basin, the sedimentation basin is anti-with described one section
The outlet of device is answered to connect, for collecting the solids in the first stage reactor.
7. system according to claim 6, which is characterized in that it further include sludge concentration tank, the sludge concentration tank and institute
The outlet connection for stating flotation tank, for collecting the solids in the flotation tank.
8. system according to claim 7, which is characterized in that the sludge concentration tank also connects with the outlet of the sedimentation basin
It connects, for the solids in the sedimentation basin and the flotation tank to be concentrated.
9. system according to claim 8, which is characterized in that it further include sludge dewatering equipment, the sludge dewatering equipment and institute
The outlet connection for stating sludge concentration tank, for being dehydrated to the solids of collection.
10. system according to claim 1, which is characterized in that further include recoil sedimentation basin, for a Duan Fanying
Device carries out cleaning and regeneration.
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| CN201821877430.1U CN209193747U (en) | 2018-11-14 | 2018-11-14 | A kind of pair of cis-butenedioic anhydride sewage handle and the system of by-product fuel gas |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109231716A (en) * | 2018-11-14 | 2019-01-18 | 山东汇丰石化集团有限公司 | A kind of pair of cis-butenedioic anhydride sewage handle and the system of by-product fuel gas |
| CN114100171A (en) * | 2021-11-23 | 2022-03-01 | 洛阳炼化九源石化有限公司 | Heavy oil treatment method and system for maleic anhydride production by n-butane method |
-
2018
- 2018-11-14 CN CN201821877430.1U patent/CN209193747U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109231716A (en) * | 2018-11-14 | 2019-01-18 | 山东汇丰石化集团有限公司 | A kind of pair of cis-butenedioic anhydride sewage handle and the system of by-product fuel gas |
| CN114100171A (en) * | 2021-11-23 | 2022-03-01 | 洛阳炼化九源石化有限公司 | Heavy oil treatment method and system for maleic anhydride production by n-butane method |
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