CN106512656B - A kind of low pressure drop the methods of odour control and low pressure drop odor treatment system - Google Patents
A kind of low pressure drop the methods of odour control and low pressure drop odor treatment system Download PDFInfo
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- CN106512656B CN106512656B CN201611138527.6A CN201611138527A CN106512656B CN 106512656 B CN106512656 B CN 106512656B CN 201611138527 A CN201611138527 A CN 201611138527A CN 106512656 B CN106512656 B CN 106512656B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
- B01D53/1406—Multiple stage absorption
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- B01D—SEPARATION
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- B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
- B01D53/1425—Regeneration of liquid absorbents
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- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
- B01D53/1493—Selection of liquid materials for use as absorbents
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/81—Solid phase processes
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- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/8603—Removing sulfur compounds
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- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/96—Regeneration, reactivation or recycling of reactants
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/30—Alkali metal compounds
- B01D2251/304—Alkali metal compounds of sodium
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- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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- B01D2251/306—Alkali metal compounds of potassium
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- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2252/00—Absorbents, i.e. solvents and liquid materials for gas absorption
- B01D2252/10—Inorganic absorbents
- B01D2252/103—Water
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2252/00—Absorbents, i.e. solvents and liquid materials for gas absorption
- B01D2252/20—Organic absorbents
- B01D2252/204—Amines
- B01D2252/20478—Alkanolamines
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Abstract
The present invention relates to field of environment protection, provide a kind of low pressure drop the methods of odour control, comprising the following steps: wash foul smell by the first multi-stage low pressure drop absorbent assembly, and washing washing water used is recycled；Foul smell after washing is carried out amine by the second multi-stage low pressure drop absorbent assembly to wash, and amine is washed into amine liquid used and is recycled；Foul smell after amine is washed carries out catalysis oxidation by third multi-stage low pressure drop absorbent assembly, and desulfurization medicament used in catalysis oxidation is recycled.This method can effectively remove the odorant in foul smell, and its process flow is short, easy to operate, and the implementation equipment to be used of this method is few, economize on resources meanwhile, it is capable to imitate, and reduce deodorization cost.Provided by the present invention for implementing the low pressure drop odor treatment system of the low pressure drop the methods of odour control, system and catalytic oxidation system are washed including interconnected water wash system, amine, and simple process, process be short and pressure drop is low, deodoriging properties are good.
Description
Technical field
The present invention relates to field of environment protection, dislike in particular to a kind of low pressure drop the methods of odour control and low pressure drop
Smelly governing system.
Background technique
It is discharged in petroleum chemical enterprise's sour water tank, coke cooling water tank, alkaline residue tank, slop tank, sewage farm and production process
The organic sulfurs such as ammonia, hydrogen sulfide in exhaust gas, tail gas containing higher concentration, and a small amount of mercaptan, thioether, disulphide, due to tool
There are nauseating bad odor, commonly referred to as odorant.It is wide that the foul smell that foul gas comes out involves range, generates to environment
Bad influence seriously endangers the health of people.Just " emission standard for odor pollutants " has been promulgated earlier than 1993 in China
(GB14554-93), it is specified that 9 item controlleds such as ammonia, sulfide and corresponding sampling and method for monitoring and analyzing, enterprise's discharge
Foul gas have to pass through deodorization processing could discharge.
Currently, the offensive odor treatment device industrially applied mainly has several techniques of wet process, dry method, bioanalysis, incineration method.
Wet process deodorizing technology, which is generallyd use, is used as deodorization absorbent by the confection that lye, oxidant, catalyst form,
For removing sulfide, medicament is recycled in absorption tower, is suitble to the deodorization of processing big flow and high sulfur-containing gas, was deodorized
Journey thermal discharge is low, will not generate spontaneous combustion and explosion.But there is also following disadvantages for wet process: 1. deodorising process generates a large amount of useless de-
Sulphur medicament (waste soda residue) generates secondary pollution；2. complex process, dynamic equipment is more, plant maintenance heavy workload；3. absorption equipment
Pressure drop is higher, need to usually be drawn foul gas using air inducing or negative pressure pumped vacuum systems, there are security risk, domestic petrochemical industry enterprise
Industry once occurred since upstream storage tank to be inhaled to flat accident using pumped vacuum systems.
Dry method deodorizing technology uses the fixed bed deodorizing tower of solid deodorant, and deodorization precision is high, and Processes and apparatus is simple, energy
Consumption and operating cost are low, and convenient operating maintenance, treatment process does not have discharging of waste liquid.But there is also following disadvantages for dry method: 1. uncomfortable
Close processing big flow, highly concentrated foul gas；2. it is high to impurities in feed gas content requirement, it otherwise can block desulfurizing agent hole
Road causes desulfuration efficiency to decline；3. desulphurization reaction heat release is higher, meeting air especially with iron-based deodorant can occur to put strongly
Heat and spontaneous combustion need to usually take cooling and safeguard measure, and essence is dangerous, and Domestic Petrochemical Enterprises once occurred a lot of due to using
Iron-base desulfurizer causes the safety accident of spontaneous combustion and explosion.
Bioanalysis is deodorization technique developing direction important from now on, and this method is to utilize autotrophic type microorganism decomposition malodorant
Matter is not required to regeneration and other post-processings, but the device is complicated, and investment and management service are costly, and operating condition is harsh, usually needs
Strict control operation temperature is within the scope of 30-50 DEG C, to guarantee the vitality of microorganism, otherwise will cause the big of deodorization efficiency
Amplitude decline.In addition, bioanalysis is poor to the adaptability of unstripped gas, be often suitable only for processing minority can carry out it is biodegradable few
Several low concentration odorants (such as hydrogen sulfide) of number, if when containing other substances in gas (such as benzene), it is easy to cause microbial bacteria
Kind poison deactivation.
Incineration method is to be mixed and burned exhaust gas and fuel, and the sulfide in exhaust gas is transformed into sulfur dioxide, need to be consumed big
The energy of amount, and secondary pollution is generated, it gradually eliminates at present.
Now widely used wet process deodorizing technology the problems such as there are complex process, long flow path, more equipment, deodorising process produce
Raw serious secondary pollution, in addition, there are security risks since pressure drop height need to use vaccum-pumping equipment.
Summary of the invention
The present invention provides a kind of low pressure drop the methods of odour control, it is intended to improve existing deodorization technique complex process, process
Problem long, equipment is more and pressure drop is high.
The present invention also provides a kind of low pressure drop offensive odor treatment devices, it is intended to improve existing exhaust air deodorization complex process,
Long flow path and the halfway problem of deodorization.
The present invention is implemented as follows:
A kind of low pressure drop the methods of odour control, includes the following steps:
Foul smell is drawn in water scrubber, and by the washing water in the first multi-stage low pressure drop absorbent assembly in water scrubber to smelly
Gas is washed, and the foul smell after washing is carried out gas-liquid separation by water pot with washing water, and again by the washing water in water pot
It is back in water scrubber and is recycled；
Foul smell after washing is introduced amine to wash in tower, and is washed in the second multi-stage low pressure drop absorbent assembly in tower by amine
Amine liquid carries out amine to the foul smell after washing and washes, and the foul smell after amine is washed and amine liquid carry out gas-liquid separation by amine flow container, and by amine
Amine liquid in flow container is back to amine again and washes recycling in tower；
Foul smell after amine is washed introduces in catalysis oxidizing tower, by the third multi-stage low pressure drop component in catalysis oxidizing tower
Desulfurization medicament amine is washed after foul smell carry out catalytic oxidation treatment, the foul smell after catalytic oxidation is passed through with desulfurization medicament
Pharmacy jar carries out gas-liquid separation, and the desulfurization medicament in pharmacy jar is back in catalysis oxidizing tower again and is recycled.
Further, in preferred embodiments of the present invention, pass through the first multi-stage low pressure drop absorbent assembly in water scrubber
The washing water of discharge washes foul smell, be foul smell is successively passed through the first strength injector mixer being arranged in water scrubber,
First super-fine atomization device and the first fiber-film contact.
It further, further include drawing foul smell before foul smell is passed through water scrubber in preferred embodiments of the present invention
Enter positive pressure water sealed tank, is honored as a queen through positive pressure water into the water scrubber.
Further, in preferred embodiments of the present invention, the washing water in water pot is constantly back in water scrubber and is followed
Ring uses after washing water reaches saturation, and the washing water after saturation is discharged.
Further, in preferred embodiments of the present invention, the second multi-stage low pressure drop absorbent assembly in tower is washed by amine
The amine liquid of discharge carries out amine to the foul smell after washing and washes, and is that the foul smell after washing is successively passed through amine to wash the last the second being arranged in tower
Power injector mixer, the second super-fine atomization device and the second fiber-film contact successively carry out amine to the foul smell after washing by amine liquid
It washes.
Further, in preferred embodiments of the present invention, amine liquid is selected from methyl diethanolamine, with monoethanolamine, diethyl
At least one of hydramine, triethanolamine and diisopropanolamine (DIPA).
Further, it in preferred embodiments of the present invention, the amine liquid in amine flow container is constantly back to amine washes in tower and follow
Ring uses after amine liquid reaches saturation, and the amine liquid after saturation is discharged.
Further, in preferred embodiments of the present invention, the third multi-stage low pressure drop absorbent assembly in tower is washed by amine
Foul smell after the desulfurization medicament of discharge washes amine carries out catalysis oxidation, is that the foul smell after washing amine is successively passed through in catalysis oxidizing tower
Third strength injector mixer, third super-fine atomization device and the third fiber-film contact of setting, desulfurization medicament is in parts by weight
Meter includes: sulfonated phthalocyanine cobalt or Cobalt Phthalocyanine 5-8 parts poly-, 3-5 parts of sulfolane, 5-10 parts of diisopropanolamine (DIPA), 5-10 parts of propylene glycol, hydrogen
15-25 parts of sodium oxide molybdena or potassium hydroxide and 42-67 parts of deionized water.
Further, in preferred embodiments of the present invention, the desulfurization medicament in pharmacy jar is back to catalysis oxygen again
Change after being recycled in tower until desulfurization medicament reaches saturation, the desulfurization medicament after saturation passes through the saturation medicine that is connected to pharmacy jar
The discharge of agent drainpipe.
A kind of low pressure drop odor treatment system for implementing above-mentioned low pressure drop the methods of odour control, including is sequentially communicated
Water wash system, amine wash system, catalytic oxidation system；Water wash system includes water scrubber, water pot and water-circulating pipe, water scrubber
The gas-liquid inlet communication of gas liquid outlet and water pot, the liquid outlet of water pot are connected to the inlet of water scrubber by water-circulating pipe；Amine
The system of washing includes that amine washes tower, amine flow container and amine liquid circulation pipe, and the gas outlet of water pot is connected to the air inlet that amine washes tower, and amine washes tower
Gas liquid outlet and amine flow container gas-liquid inlet communication, the inlet that the liquid outlet of amine flow container and amine wash tower passes through amine liquid circulation pipe
Connection；Catalytic oxidation system includes catalysis oxidizing tower, pharmacy jar and medicament circulation pipe, the gas outlet of amine flow container and catalysis oxidation
The air inlet of tower is connected to, the gas liquid outlet of catalysis oxidizing tower and the gas-liquid inlet communication of pharmacy jar, the liquid outlet of pharmacy jar with urge
The inlet for changing oxidizing tower is connected to by medicament circulation pipe.
The beneficial effects of the present invention are: the low pressure drop the methods of odour control that the present invention obtains by above-mentioned design, due to adopting
It is washed with water, the step of amine is washed and catalytic oxidation treatment, the stenches such as ammonia, hydrogen sulfide, the organic sulfur in foul smell can be effectively removed
Substance, and its process flow is short, easy to operate, it is few to implement the equipment to be used of this method, meanwhile, washing water, amine liquid with
And effectively save resource is recycled in desulfurization medicament, reduces deodorization cost.Provided by the present invention for implementing the low pressure drop stench
The low pressure drop odor treatment system of administering method, due to water wash system, the amine of the low pressure drop odor treatment system wash system and
The setting of catalytic oxidation system three absorbs process using cocurrent, completes mass transfer without mutually dispersing, and avoids foam entrainment, ditch
Stream, blocking, pressure drop are significantly less than the packed tower of counter-current absorption, eddy flow tower.And the low pressure drop odor treatment system process is simple, stream
Journey is short and deodoriging properties are good.
Detailed description of the invention
It, below will be to use required in embodiment in order to illustrate more clearly of the technical solution of embodiment of the present invention
Attached drawing be briefly described, to help to understand, the following drawings illustrates only certain embodiments of the present invention, therefore should not be seen
Work is the restriction to range, for those of ordinary skill in the art, without creative efforts, can be with
Other relevant attached drawings are obtained according to these attached drawings.
Fig. 1 is the first structural schematic diagram for the low pressure drop odor treatment system that first embodiment of the invention provides；
Fig. 2 is second of structural schematic diagram of the low pressure drop odor treatment system that first embodiment of the invention provides；
Fig. 3 is the structural schematic diagram for the low pressure drop odor treatment system that second embodiment of the invention provides；
Fig. 4 is the flow chart of low pressure drop the methods of odour control provided by the invention.
Icon: 100- low pressure drop odor treatment system；200- low pressure drop odor treatment system；110- water wash system；111-
Water scrubber；112- the first strength injector mixer；113- the first super-fine atomization device；The first fiber-film contact of 114-；115- water
Tank；116- water-circulating pump；117- water-circulating pipe；118- saturated water drainpipe；119- water inlet pipe；130- amine washes system；230- amine
Wash system；131- amine washes tower；231a- amine washes tower；231b- amine washes tower；132- the second strength injector mixer；133- second is ultra-fine
Atomizer；The second fiber-film contact of 134-；135- amine flow container；136- amine liquid circulating pump；137- amine liquid circulation pipe；138- saturation
Amine liquid drainpipe；139- amine liquid water inlet pipe；150- catalytic oxidation system；151- catalysis oxidizing tower；152- third strength mixing spray
Emitter；153- third super-fine atomization device；154- third fiber-film contact；155- pharmacy jar；156- medicament circulating pump；157- medicine
Agent circulation pipe；158- is saturated medicament drainpipe；159- medicament water inlet pipe；161- purified gas exhaust pipe；170- positive pressure water sealed tank；
171- foul smell air inlet pipe.
Specific embodiment
To keep the purposes, technical schemes and advantages of embodiment of the present invention clearer, implement below in conjunction with the present invention
The technical solution in embodiment of the present invention is clearly and completely described in attached drawing in mode, it is clear that described reality
The mode of applying is some embodiments of the invention, rather than whole embodiments.Based on the embodiment in the present invention, ability
Domain those of ordinary skill every other embodiment obtained without creative efforts, belongs to the present invention
The range of protection.Therefore, the detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit below and is wanted
The scope of the present invention of protection is sought, but is merely representative of selected embodiment of the invention.Based on the embodiment in the present invention,
Every other embodiment obtained by those of ordinary skill in the art without making creative efforts belongs to this
Invent the range of protection.
In the description of the present invention, it is to be understood that, term " on ", "lower", "front", "rear", "top", "bottom", "inner",
The orientation or positional relationship of the instructions such as "outside" is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of describing this hair
Bright and simplified description, rather than the equipment of indication or suggestion meaning or element must have a particular orientation, with specific orientation
Construction and operation, therefore be not considered as limiting the invention.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include one or more of the features.In the description of the present invention, the meaning of " plurality " is two or more,
Unless otherwise specifically defined.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " fixation " etc.
Term shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；It can be mechanical connect
It connects, is also possible to be electrically connected；It can be directly connected, can also can be in two elements indirectly connected through an intermediary
The interaction relationship of the connection in portion or two elements.It for the ordinary skill in the art, can be according to specific feelings
Condition understands the concrete meaning of above-mentioned term in the present invention.
In the present invention unless specifically defined or limited otherwise, fisrt feature second feature "upper" or "lower"
It may include that the first and second features directly contact, also may include that the first and second features are not direct contacts but pass through it
Between other characterisation contact.Moreover, fisrt feature includes the first spy above the second feature " above ", " above " and " above "
Sign is right above second feature and oblique upper, or is merely representative of first feature horizontal height higher than second feature.Fisrt feature exists
Second feature " under ", " lower section " and " following " include that fisrt feature is directly below and diagonally below the second feature, or is merely representative of
First feature horizontal height is less than second feature.
Invention is described in further detail below by specific embodiment and in conjunction with attached drawing.
First embodiment
As depicted in figs. 1 and 2, low pressure drop odor treatment system 100 includes that the water wash system 110, the amine that are sequentially communicated are washed and is
System 130 and catalytic oxidation system 150.
Water wash system 110 include water scrubber 111, water pot 115 and water-circulating pipe 117, the gas liquid outlet of water scrubber 111 with
The liquid outlet of the gas-liquid inlet communication of water pot 115, water pot 115 is connected to the water inlet of water scrubber 111 by water-circulating pipe 117,
The top of water pot 115 is provided with gas-liquid import (figure do not mark), inlet (figure is not marked) and gas outlet (scheming not mark), 115 bottom of water pot
Portion is provided with liquid outlet (figure is not marked), and water pot 115 is not expired by tank, and upper part forms gas passage, supplied gas circulation；Foul gas
It is passed through in water scrubber 111, after being rinsed by clean water, water pot 115 is entered together with clean water, the washing water into water pot 115 passes through
Water-circulating pipe 117 is passed through in water scrubber 111 again and cleans to foul gas, for example by the intracorporal soluble gas of effluvium
Ammonia is absorbed.
The first multi-stage low pressure drop absorbent assembly (figure is not marked), the first multi-stage low pressure drop absorption group are provided in water scrubber 111
Part includes that the first strength injector mixer 112, the first super-fine atomization device 113 and the first tunica fibrosa being from top to bottom sequentially communicated connect
The inlet of tentaculum 114, the first strength injector mixer 112 is connected to the liquid outlet of water pot 115, the first fiber-film contact
114 gas liquid outlet is connected to the gas liquid outlet of water pot 115.First strength injector mixer 112 can be in liquid at high speed spurting
Huge shearing force is generated under state, and liquid is torn into micron-sized tunica fibrosa and drop, the traditional tower of gas-liquid mass transfer speed ratio
Device improves 1~2 order of magnitude, and microcosmic mixing and the mass transport process of unit equipment volume are greatly strengthened, while generating micro- negative
Pressure introduces a gas into absorption tower；The fogdrop diameter that first super-fine atomization device 113 generates can reach micron order, and pressure drop is extremely low, drop
Quantity increases by 200,000 times than conventional nozzle, and gas liquid interfacial area increases far more than conventional spray-absorption, assimilation effect, water consumption
50 times or more can be reduced；First fiber-film contact 114 is by the very thin groups of metal filaments of multiple groups at due to by the special place in surface
Reason, changes metallic surface tension, and solution is made, much larger than common metal silk, to form uniform, cause to the adhesive force of wire wall
Close, continuous liquid phase film, gas liquid interfacial area are more than 10 times of packed tower, and mass-transfer efficiency greatly improves, and solvent usage is also big
Amplitude reduction, the first strength injector mixer 112, the first super-fine atomization device 113 and 114 three of the first fiber-film contact are
Low pressure drop component is not required to add vaccum-pumping equipment i.e. so that the pressure drop in entire 100 pipeline of low pressure drop odor treatment system is lower
Certifiable gas enters deodorization device, avoids and upstream storage tank is inhaled to flat security risk due to vacuumizing, and this three kinds of components
It is efficient absorption component, gas liquid interfacial area is big, and mass transfer rate is high, and deodorization efficiency greatly improves, and equipment volume and quantity are small,
Process flow is succinct, easy to operate.
Low pressure drop odor treatment system 100 further includes foul smell air inlet pipe 171 and positive pressure water sealed tank 170, positive pressure water sealed tank 170
Air inlet and foul smell air inlet pipe 171 air inlet pipe it is logical, the gas outlet of positive pressure water sealed tank 170 and the air inlet of water scrubber 111 connect
It is logical, and the air inlet of water scrubber 111 is connected to the air inlet of the first strength injector mixer 112, thus positive pressure water sealed tank 170 into
Port is connected to the air inlet of the first strength injector mixer 112.Foul gas enters positive pressure water seal by foul smell air inlet pipe 171
In tank 170, seals when gas reaches certain pressure backlash one's water breaks, enter in water scrubber 111 from the outlet of positive pressure water sealed tank 170.Just
170 structure of pressurized water seal tank is simple, pressure drop that is easy to control and can reduce gas, while outside air can also be prevented to pass through low pressure
Drop odor treatment system 100 enters upstream device and sets off an explosion with mixing in storage tank with fuel gas.
The top water inlet of water pot 115 is communicated with water inlet pipe 119, and extraneous flushing water is passed into water by water inlet pipe 119
In tank 115；Water-circulating pump 116 is provided on the pipeline of water-circulating pipe 117, flushing water is under the action of water-circulating pump 116 from water
It is pumped in water scrubber 111 and is recycled in tank 115.Between water-circulating pump 116 and the first strength injector mixer 112
Saturated water drainpipe 118 is also communicated on connecting line, repeatedly from saturated water drainpipe 118 after the washing water saturation for rinsing
Discharge, then washing water is supplemented into water pot 115 from water inlet pipe 119.Wherein, middle water, recycle-water and regeneration can be used in washing water
Water etc., and the saturation washing water being discharged will not be expelled directly out, but reuse again after processing, it is effectively saved water resource.
It includes that amine washes tower 131, amine flow container 135 and amine liquid circulation pipe 137 that amine, which washes system 130, the gas outlet of water pot 115 with
Amine washes the air inlet connection of tower 131, and amine washes the gas liquid outlet of tower 131 and the gas-liquid inlet communication of amine flow container 135, amine flow container 135
Liquid outlet and amine wash the inlet of tower 131 and be connected to by amine liquid circulation pipe 137, the structure and 115 class of water pot of amine flow container 135
Seemingly, it does not do and excessively repeats herein.Foul gas after washing is discharged into amine from the gas outlet of water pot 115 and washes tower 131, washes in amine
It is cleaned in tower 131 by amine liquid, removes the hydrogen sulfide in foul gas, the gas after amine is washed enters amine flow container together with amine liquid
In 135, used amine liquid, which is transported to amine through amine liquid circulation pipe 137 again, to be washed in tower 131 and is recycled.In the present embodiment,
Methyl diethanolamine, monoethanolamine, diethanol amine, triethanolamine and diisopropanolamine (DIPA) etc. can be selected in amine liquid.
Amine, which is washed in tower 131, is provided with the second multi-stage low pressure drop absorbent assembly (figure is not marked), the second multi-stage low pressure drop absorption group
Part includes that the second strength injector mixer 132, the second super-fine atomization device 133 and the second tunica fibrosa being from top to bottom sequentially communicated connect
The inlet of tentaculum 134, the second strength injector mixer 132 is connected to the liquid outlet of amine flow container 135, the second fiber-film contact
134 gas liquid outlet is connected to the gas liquid outlet of amine flow container 135.Wherein the second strength injector mixer 132, the second super-fine atomization
The effect of 134 three of device 133 and the second fiber-film contact and the first strength injector mixer 112, the first super-fine atomization device 113
It is identical with the first fiber-film contact 114.
The top water inlet of amine flow container 135 is communicated with amine liquid water inlet pipe 139, and extraneous fresh amine liquid passes through amine liquid water inlet pipe
139 are passed through in amine flow container 135, amine liquid circulating pump 136 are provided on the pipeline of amine liquid circulation pipe 137, amine liquid is in amine liquid circulating pump
It amine is pumped under the action of 136 out of amine flow container 135 washes in tower 131 and be recycled.Amine liquid circulating pump 136 and the second strength
Saturation amine liquid drainpipe 138 is also communicated on connecting line between injector mixer 132, the amine liquid after washing for multiple amine is full
It is discharged with after from saturation amine liquid drainpipe 138, then supplements washing water into amine flow container 135 from amine liquid water inlet pipe 139.It is saturated amine liquid
System is again returned to through certain processing after being discharged to wash foul gas progress amine.Amine liquid recycles the wave for avoiding resource
Take.
Catalytic oxidation system 150 includes catalysis oxidizing tower 151, pharmacy jar 155 and medicament circulation pipe 157, amine flow container 135
Gas outlet be connected to the air inlet of catalysis oxidizing tower 151, the gas-liquid of the gas liquid outlet of catalysis oxidizing tower 151 and pharmacy jar 155
The liquid outlet of inlet communication, pharmacy jar 155 is connected to the inlet of catalysis oxidizing tower 151 by medicament circulation pipe 157, pharmacy jar
155 structure is similar to water pot 115, does not do excessively repeat herein.The outlet of foul gas after amine is washed from amine flow container 135
Mouth is passed through catalysis oxidizing tower 151, in 151 inner part gas of catalysis oxidizing tower by catalysis oxidation, removes lacking for the remaining in gas
Hydrogen sulfide and mercaptan, thioether etc. are measured, the gas after catalysis oxidation is together with the medicament for catalysis oxidation from pharmacy jar 155
Gas-liquid import enters in pharmacy jar 155, and the medicament in pharmacy jar 155 is delivered to catalysis oxidizing tower by medicament circulation pipe 157 herein
It is recycled in 151.
Third multi-stage low pressure drop absorbent assembly (figure is not marked) is provided in catalysis oxidizing tower 151, third multi-stage low pressure drop is inhaled
Receiving component includes the third strength injector mixer 152, third super-fine atomization device 153 and third fiber being from top to bottom sequentially communicated
The inlet of membrane contactor 154, third strength injector mixer 152 is connected to the liquid outlet of pharmacy jar 155, and third tunica fibrosa connects
The gas liquid outlet of tentaculum 154 is connected to the gas liquid outlet of pharmacy jar 155.Wherein third strength injector mixer 152, third are ultra-fine
The effect of 154 three of atomizer 153 and third fiber-film contact and the first strength injector mixer 112, the first super-fine atomization
Device 113 and the first fiber-film contact 114 are identical.
Medicament circulating pump 156 is provided on the pipeline of medicament circulation pipe 157, catalysis oxidation medicament is in medicament circulating pump 156
Under the action of be pumped in catalysis oxidizing tower 151 and be recycled out of pharmacy jar 155.Medicament circulating pump 156 and pharmacy jar
It is also communicated with medicament water inlet pipe 159 on the pipeline of 155 connections, medicament is deodorized from medicament water inlet pipe 159 and is added to medicament circulation pipe
In 157, it is pumped under the action of medicament circulating pump 156 in catalysis oxidizing tower 151 anti-to foul gas progress catalysis oxidation
It answers.Saturation medicament drainpipe is also communicated on connecting line between medicament circulating pump 156 and third strength injector mixer 152
158, for after multiple catalysis oxidation medicament saturation after from saturation medicament drainpipe 158 be discharged, then from medicament water inlet pipe 159 to
Supplement deodorization medicament in medicament circulation pipe 157.Saturation deodorization medicament passes through certain processing after being discharged and again returns to system to stench
Gas carries out catalysis oxidation.Deodorization medicament recycles the waste for avoiding resource.
Gas after catalytic oxidation treatment is discharged into purified gas exhaust pipe 161 from the top gas outlet of pharmacy jar 155, most
It is discharged eventually.
The setting that water wash system 110, amine wash 150 three of system 130 and catalytic oxidation system belongs to cocurrent and absorbs process,
Mass transfer is completed without mutually dispersing, avoids foam entrainment, channel, blocking, pressure drop is significantly less than the packed tower of counter-current absorption, rotation
Flow tower.
Second embodiment
The technical effect of low pressure drop odor treatment system 200 provided by the embodiment of the present invention, realization principle and generation
Identical with first embodiment, to briefly describe, the present embodiment does not refer to place, can refer to corresponding contents in first embodiment.
As shown in figure 3, it includes that two amine in parallel wash tower 231a that amine, which washes system 230, in low pressure drop odor treatment system 200
Tower 231b is washed with amine, and amine washes tower 231a and washes that tower 231b internal structure is identical with amine, and two amine in parallel of setting wash the mesh of tower
Be that while can also prevent from being unlikely to cause after one of damage whole to keep low pressure drop odor treatment system faster more efficient
A system can not work.
It should be pointed out that in other embodiments of the invention, it can also be water scrubber in water wash system either
Catalysis oxidizing tower quantity in catalytic oxidation system is 2 and use is connected in parallel.
Referring to fig. 4, and referring also to Fig. 1 and Fig. 2, provided in an embodiment of the present invention with above-mentioned low pressure drop odor treatment system
The low pressure drop the methods of odour control that system 100 combines, comprising the following steps:
S1, foul smell is passed through in water scrubber, and passes through the washing in the first multi-stage low pressure drop absorbent assembly in water scrubber
Water washes foul smell, by after washing foul smell and washing water by water pot progress gas-liquid separation, and by the washing in water pot
Water is back in water scrubber again and is recycled.
Specifically, foul gas is passed through positive pressure water sealed tank by foul smell air inlet pipe 171 first referring to attached drawing 1 and attached drawing 2
In 170, the pressure drop of gas is made to be lower, while outside air can also be prevented to enter upstream by low pressure drop odor treatment system 100
It device and sets off an explosion with being mixed in storage tank with fuel gas, simultaneously washing water is delivered to water pot 115 by water inlet pipe 119
Interior, the washing water in water pot 115 is transported to water scrubber 111 through water-circulating pipe 117 under the action of water-circulating pump 116, conveying
In the first multi-stage low pressure drop absorbent assembly in water scrubber 111, the first multi-stage low pressure drop absorbent assembly includes in the present invention
First strength injector mixer 112, the first super-fine atomization device 113 and the first fiber-film contact 114；Then by foul gas according to
It is secondary to be passed through the first strength injector mixer 112, the first super-fine atomization device 113 and the first fiber-film contact 114, by being passed through it
In washing water foul gas is washed.Foul smell after being washed with water enters together with washing water in water pot 115, in water pot
Carry out gas-liquid separation in 115, the foul smell after being washed with water of 115 top of water pot is passed into amine and washes in tower 131,115 lower part of water pot
Washing water is back in water scrubber 111 by water-circulating pipe 117 and is recycled, when the washing water for being constantly refluxed recycling
When reaching saturation, it is discharged by saturated water drainpipe 118.Washing water can be selected factory produce in water, recycle-water either
Tap water.Water-washing process is for the readily soluble pernicious gases such as ammonia in foul smell of going out, while the washing water circulation of water-washing process
Using being effectively saved water resource.The step operation is simple, and the device structure quick-reading flow sheets to be used is short, using low pressure drop
Absorbent assembly can guarantee that entire removal process is in the state of low pressure drop, be that operating process is safer.
The saturation ammonia-containing water that water-washing process generates can return to upstream Water Tank containing ammonia, produce liquid by sewage stripping device
Ammonia or ammonium hydroxide.
S2, it the foul smell after washing is passed through amine washes in tower, and wash the second multi-stage low pressure drop absorbent assembly in tower by amine
Interior washing water carries out amine to the foul smell after washing and washes, and the foul smell after amine is washed and amine liquid pass through amine flow container and carries out gas-liquid separation,
And it the amine liquid in amine flow container is back to amine again washes in tower and be recycled.
Specifically, referring to attached drawing 1 and attached drawing 2, the foul smell after washing is washed in tower 131 by being discharged into amine in water pot 115, with
This simultaneously, amine liquid by amine liquid water inlet pipe 139 enter amine flow container 135 in, recycled under the action of amine liquid circulating pump 136 through amine liquid
Pipe 137 is transported in the second multi-stage low pressure drop absorbent assembly that amine is washed in tower 131, and the second multi-stage low pressure drop is inhaled in the present invention
Receiving component includes the second strength injector mixer 132, the second super-fine atomization device 133 and the second fiber-film contact 134；Then will
Foul gas is successively passed through the second strength injector mixer 132, the second super-fine atomization device 133 and the second fiber-film contact 134,
Foul gas progress amine is washed by being passed through aqueous amine therein.Amine liquid is selected from methyl diethanolamine, with monoethanolamine, diethanol
At least one of amine, triethanolamine and diisopropanolamine (DIPA).Foul smell after being washed by amine enters together with amine liquid in amine flow container 135,
Carrying out gas-liquid separation in amine flow container 135, the foul smell after being washed by amine of 135 top of amine flow container is passed into catalysis oxidizing tower 151,
The washing water of 135 lower part of amine flow container is back to amine by amine liquid circulation pipe 137 and washes recycling in tower 131, is returned when constantly
When the amine liquid that stream is recycled reaches saturation, it is discharged by being saturated amine liquid drainpipe 138.It is to remove and dislike that amine, which washes journey,
Hydrogen sulfide in odour, the removal rate of the hydrogen sulfide in foul smell after amine is washed can reach 80% or more, and amine liquid circulation makes
With the waste for reducing amine liquid, removal cost has been saved.The step operation is simple, and the device structure quick-reading flow sheets to be used
It is short, using low pressure drop absorbent assembly, it can guarantee that entire removal process is in the state of low pressure drop, be that operating process is more pacified
Entirely.
Amine washes the sulfide hydrogen amine liquid (rich solution) that journey generates and returns to upstream amine lyolysis suction regenerative system, fresh after regeneration
Amine liquid (lean solution) return amine is washed tower 131 and is reused, and the hydrogen sulfide desorbed is delivered to sulphur unit production sulphur.
S3, amine is washed after foul smell be passed through in catalysis oxidizing tower, pass through the third multi-stage low pressure drop group in catalysis oxidizing tower
Foul smell after washing water in part washes amine carries out catalytic oxidation, and the foul smell after catalytic oxidation is led to desulfurization medicament
It crosses pharmacy jar and carries out gas-liquid separation, and the desulfurization medicament in pharmacy jar is back in catalysis oxidizing tower again and is recycled.
Specifically, referring to attached drawing 1 and attached drawing 2, amine wash after foul smell by being discharged into catalysis oxidizing tower in amine flow container 135
In 151, at the same time, desulfurization medicament is by medicament water inlet pipe 159, through medicament circulation pipe under the action of medicament circulating pump 156
157 are transported in the third multi-stage low pressure drop absorbent assembly in catalysis oxidizing tower 151, in the present invention third multi-stage low pressure drop
Absorbent assembly includes third strength injector mixer 152, third super-fine atomization device 153 and third fiber-film contact 154；Then
Foul gas is successively passed through to third strength injector mixer 152, third super-fine atomization device 153 and third fiber-film contact
154, catalytic oxidation treatment is carried out to foul gas by being passed through desulfurization medicament therein.Desulfurization medicament wraps according to parts by weight
It includes: sulfonated phthalocyanine cobalt or Cobalt Phthalocyanine 5-8 parts poly-, 3-5 parts of sulfolane, 5-10 parts of diisopropanolamine (DIPA), 5-10 parts of propylene glycol, hydroxide
15-25 parts of sodium or potassium hydroxide and 42-67 parts of deionized water.Medicine is entered together with desulfurization medicament by the foul smell after catalysis oxidation
In agent tank 155, carry out gas-liquid separation in pharmacy jar 155,155 top of pharmacy jar by the foul smell after catalysis oxidation by with medicament
The exhaust tube (not shown) discharge that tank 155 is connected to, the desulfurization medicament of 155 lower part of pharmacy jar are refluxed by medicament circulation pipe 157
It is recycled in catalysis oxidizing tower 151, when the desulfurization medicament for being constantly refluxed recycling reaches saturation, it is passed through full
It is discharged with medicament drainpipe 158.Foul smell after washing to amine, which carries out catalysis oxidation, can be removed in depth the sulfide in foul smell, will vulcanize
Hydrogen-oxygen turns to sulfate radical, and mercaptan, thioether are oxidized to non-toxic and tasteless sulfonic acid and sulfoxide, removal efficiency of this step to sulfide respectively
Up to 95% or more, and the recycling of desulfurization medicament is effectively saved resource, reduces removal cost.The step operation is simple,
And the device structure quick-reading flow sheets to be used is short, using low pressure drop absorbent assembly, can guarantee that entire removal process is in low
The state of pressure drop keeps operating process safer.
The saturation desulfurization medicament that catalytic oxidation process generates can be sent to factory's alkaline residue processing system, or as pH value adjustment agent
Inject acidic water stripping device, sour water tank.
Experimental example 1
The tail gas of certain plant emissions is cooperated into existing equipment using low pressure drop the methods of odour control provided by the invention
The tail gas of the factory is handled, treated, and gas number is 1, and the indices of No. 1 gas are charged in following table 1.
Experimental example 2
The same tail gas for taking above-mentioned factory is cooperated existing using low pressure drop odor treatment system provided by the invention
Washing, amine is washed and desulfurization medicament handles the tail gas of the factory, and treated gas number is 2, by each of No. 2 gas
Item index is charged in following table 1.
Experimental example 3
The same tail gas of above-mentioned factory using low pressure drop odor treatment system provided by the invention and cooperates the present invention to mention
The low pressure drop the methods of odour control of confession handles the tail gas of the factory, and treated gas number is 3, by No. 3 gas
Indices are charged in following table 1.
The indices of 1 experimental gas of table before and after the processing and institute in " emission standard for odor pollutants " (GB14554-1993)
The comparison of defined related request (exhaust tube is 15 meters high)
Table in analysis is it is found that No. 1, No. 2 and No. 3 gas reaches emission standard for odor pollutants " (GB14554-1993)
The concentration of middle defined, and removal rate illustrates low pressure drop the methods of odour control and low pressure drop provided by the invention close to 100%
Odor treatment system is effective.
In conclusion the low pressure drop the methods of odour control that the present invention obtains by above-mentioned design, due to being washed using washing, amine
And the step of catalytic oxidation treatment, the odorant in foul smell can be effectively removed, and its process flow is short, operation letter
Single, the implementation equipment to be used of this method is few, meanwhile, effectively save money is recycled in washing water, amine liquid and desulfurization medicament
Source reduces removal cost.Provided by the present invention for implementing the low pressure drop odor treatment system of the low pressure drop the methods of odour control,
The system due to absorption process using cocurrent absorb process, complete mass transfer without mutually dispersing, avoid foam entrainment, channel,
Blocking, pressure drop is significantly less than the packed tower of counter-current absorption, eddy flow tower, and the low pressure drop odor treatment system process is simple, process
Short and deodoriging properties are good.
The foregoing is merely the preferred embodiment of the present invention, are not intended to restrict the invention, for this field
For technical staff, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any
Modification, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (8)
1. a kind of low pressure drop the methods of odour control, which comprises the steps of:
Foul smell is introduced in the water scrubber from the top of water scrubber, it is mixed to be successively passed through the first strength being arranged in the water scrubber
Injector, the first super-fine atomization device and the first fiber-film contact is closed to wash the foul smell, it will be described smelly after washing
Gas and washing water carry out gas-liquid separation by being located at the water pot below the water scrubber, and by the washing water in the water pot
It is back in the water scrubber and is recycled again；
Foul smell after washing is introduced the amine from the top that amine washes tower to wash in tower, the foul smell after washing is successively passed through the amine
It is successively right by amine liquid to wash the second strength injector mixer, the second super-fine atomization device and the second fiber-film contact being arranged in tower
Foul smell after the washing carries out amine and washes, and the foul smell after amine is washed and the amine liquid are washed below tower by being located at the amine
Amine flow container carries out gas-liquid separation, and the amine liquid in the amine flow container is back to the amine again washes in tower and be recycled；
Foul smell after amine is washed introduces in catalysis oxidizing tower from the top of catalysis oxidizing tower, and the foul smell after the amine is washed successively leads to
Enter third strength injector mixer, third super-fine atomization device and third the tunica fibrosa contact being arranged in the catalysis oxidizing tower
The foul smell after catalytic oxidation is passed through the pharmacy jar being located at below the catalysis oxidizing tower with desulfurization medicament and carried out by device
Gas-liquid separation, and the desulfurization medicament in the pharmacy jar is back in catalysis oxidizing tower again and is recycled.
2. low pressure drop the methods of odour control according to claim 1, which is characterized in that the foul smell is being introduced the water
It washes before tower, further includes that the foul smell is introduced into positive pressure water sealed tank, be honored as a queen by positive pressure water into the water scrubber.
3. low pressure drop the methods of odour control according to claim 1, which is characterized in that not by the washing water in the water pot
Disconnected be back in water scrubber is recycled after the washing water reaches saturation, and the washing water after saturation is discharged.
4. low pressure drop the methods of odour control according to claim 1, which is characterized in that the amine liquid is selected from methyl diethanol
Amine, at least one of monoethanolamine, diethanol amine, triethanolamine and diisopropanolamine (DIPA).
5. low pressure drop the methods of odour control according to claim 1, which is characterized in that not by the amine liquid in the amine flow container
The disconnected amine that is back to washes the interior recycling of tower after the amine liquid reaches saturation, and the amine liquid after saturation is discharged.
6. low pressure drop the methods of odour control according to claim 1, which is characterized in that the desulfurization medicament is in parts by weight
Meter includes: sulfonated phthalocyanine cobalt or Cobalt Phthalocyanine 5-8 parts poly-, 3-5 parts of sulfolane, 5-10 parts of diisopropanolamine (DIPA), 5-10 parts of propylene glycol, hydrogen
15-25 parts of sodium oxide molybdena or potassium hydroxide and 42-67 parts of deionized water.
7. low pressure drop the methods of odour control according to claim 1, which is characterized in that the desulfurization medicament in the pharmacy jar
Be back to again in catalysis oxidizing tower be recycled after until the desulfurization medicament reach saturation, the desulfurization medicine after saturation
Agent is discharged by the saturation medicament drainpipe being connected to the pharmacy jar.
8. a kind of low pressure drop odor treatment system, which is characterized in that the low pressure drop odor treatment system is for implementing such as right
It is required that the described in any item methods of 1-7, water wash system, amine including being sequentially communicated wash system, catalytic oxidation system；The washing
System includes the water scrubber, the water pot and water-circulating pipe, the gas-liquid of the gas liquid outlet of the water scrubber and the water pot
Inlet communication, the liquid outlet of the water pot are connected to the inlet of the water scrubber by the water-circulating pipe；The amine, which is washed, is
System includes that the amine washes tower, the amine flow container and amine liquid circulation pipe, and the gas outlet of the water pot and the amine wash the air inlet of tower
Mouth connection, the amine wash the gas liquid outlet of tower and the gas-liquid inlet communication of the amine flow container, the liquid outlet of the amine flow container and institute
State amine wash tower inlet pass through the amine liquid circulation pipe be connected to；The catalytic oxidation system includes the catalysis oxidizing tower, institute
Pharmacy jar and medicament circulation pipe are stated, the gas outlet of the amine flow container is connected to the air inlet of the catalysis oxidizing tower, described to urge
Change the gas liquid outlet of oxidizing tower and the gas-liquid inlet communication of the pharmacy jar, the liquid outlet of the pharmacy jar and the catalysis oxidation
The inlet of tower is connected to by the medicament circulation pipe, and the water scrubber, the amine are washed in tower and the catalysis oxidizing tower
From top to bottom it is disposed with injector mixer, super-fine atomization device and fiber-film contact.
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| CN202078821U (en) * | 2010-12-30 | 2011-12-21 | 中盐制盐工程技术研究院 | Flue gas scrubber tower |
| CN205055780U (en) * | 2015-09-10 | 2016-03-02 | 杭州正清环保科技有限公司 | Handle heterogeneous strong oxygen catalytic reaction complete sets of plastics, rubber waste gas |
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| CN202078821U (en) * | 2010-12-30 | 2011-12-21 | 中盐制盐工程技术研究院 | Flue gas scrubber tower |
| CN205055780U (en) * | 2015-09-10 | 2016-03-02 | 杭州正清环保科技有限公司 | Handle heterogeneous strong oxygen catalytic reaction complete sets of plastics, rubber waste gas |
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