CN106621793A - Bio-trickling filter for producing sulphur by removing hydrogen sulfide and method thereof - Google Patents
Bio-trickling filter for producing sulphur by removing hydrogen sulfide and method thereof Download PDFInfo
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- CN106621793A CN106621793A CN201710082135.0A CN201710082135A CN106621793A CN 106621793 A CN106621793 A CN 106621793A CN 201710082135 A CN201710082135 A CN 201710082135A CN 106621793 A CN106621793 A CN 106621793A
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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
- B01D53/84—Biological processes
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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
- B01D53/46—Removing components of defined structure
- B01D53/48—Sulfur compounds
- B01D53/52—Hydrogen sulfide
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- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B17/00—Sulfur; Compounds thereof
- C01B17/02—Preparation of sulfur; Purification
- C01B17/04—Preparation of sulfur; Purification from gaseous sulfur compounds including gaseous sulfides
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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Abstract
The invention belongs to the technical field of devulcanization, and relates to a bio-trickling filter for producing sulphur by removing hydrogen sulfide and a method thereof. The bio-trickling filter disclosed by the invention comprises a gas inlet part, a first filler layer, a first gas outlet part, a second filler layer and a spraying chamber which are arranged from bottom to top sequentially; each part is of a concentric cylinder or cube shape; a cone-shaped second gas outlet part is also arranged on the upper surface of the spraying chamber; a gas inlet is formed at the upper part of one side of the gas inlet part at the bottom, and the middle part of the other side of the gas inlet part is sequentially connected with a cone-shaped solid-liquid separation device and a lower tank; waste gas containing hydrogen sulfide is in reverse contact with biological desulfurization circulating liquid from top to bottom, which is pumped into the spraying chamber by the solid-liquid separation device and the lower tank, on a biological filler, and a biodegradation reaction is performed to generate the sulphur. The bio-trickling filter disclosed by the invention can ensure purification of high-concentration hydrogen sulfide, optimize process equipment and solve the problems of blockage, waste and the like of sulphur in a process, and has the advantages of good processing effect, low energy consumption, low investment, no secondary pollution and the like.
Description
Technical field
The invention belongs to technical field of desulfurization, and in particular to a kind of bio-trickling filter of removing hydrogen sulfide production sulphur and its
Method.The method is for the discharge sulfuration such as some paper mills, coke-oven plant, chemical plant, pharmaceutical factory, sewage treatment plant, garbage loading embeading
The field of hydrogen waste gas, has the advantages that low high treating effect, energy consumption, small investment, non-secondary pollution.
Background technology
In recent years, H2S is normally present in various lifes as some chemical reactions and the product of protein bio degradation process, Jing
During product.Such as there is H in the Low-temperature carbonization of coal, non-ferrous metal metallurgy, rubber, process hides, dyestuff, sugaring industry2S is produced.
Also rubbish, sewage, the Anaerobic Treatment of sludge are also often accompanied by H2S is present.In the industry, hydrogen sulfide can produce stress corruption to pipeline
The lives and properties of people are produced threat by the corrosion of erosion, electrochemical corrosion and hydrogen embrittlement；Meanwhile, hydrogen sulfide has excitant and strong
Strong neurotoxicity, can endanger the health care belt of human body, human body poisoning after can occur at once giddy, nausea, it is weak, walk not
Surely, the symptom such as expiratory dyspnea, clouding of consciousness.
Traditional desulfurization technology has obtained very big accreditation in academia, but because its floor space it is big, investment and the expense run
The shortcomings of height, high energy consumption, the current technology is in the process of actual waste gas using few.
In prior art, the filler of biological desulphurization is mainly inorganic filler and organic filler, and inorganic filler is such as：Activated carbon,
Haydite, ceramics, diatomite etc., organic filler has polyvinyl chloride, polypropylene, resin etc., but due to no modification, and do not have
The unique bio-trickling filter of configuration structure, causes product in bio-trickling filter to be difficult to control to, and causes Sulphur ressource waste, circulation fluid to need
The problems such as replacing.Therefore, a kind of high efficiency, low cost are developed, the method for less energy consumption is crucial.
The content of the invention
The present invention is problem present in the current technology of solution, there is provided a kind of removing hydrogen sulfide produces the bio-trickling of sulphur
Tower and its method, it is ensured that the purification efficiency of high-concentration hydrogen sulfide and product sulphur is obtained, while optimize technique equipment, solves
The problems such as sulfur plug is with wasting in technique, and have the advantages that low high treating effect, energy consumption, small investment, non-secondary pollution.
The present invention is employed the following technical solutions and is achieved：
A kind of removing hydrogen sulfide of the present invention produces the bio-trickling filter of sulphur, including air intake portion successively from bottom to top
Point, the first packing layer, the first air outlet parts, the second packing layer, spray chamber, each several part is concentric cylinder or cube shape,
The second air outlet parts of cone-shaped are additionally provided with above the spray chamber, a upper lateral part of the air intake part of the bottom is provided with
Air intake, is sequentially connected the equipment for separating liquid from solid and Lower tank of taper in the middle part of opposite side, the top of the Lower tank draws defeated
Send the middle and upper part of pipeline Jing circulating pumps access spray chamber and connect downward shower nozzle；First packing layer and the second packing layer
Bottom is provided with air flow method dividing plate with holes, and the side of the first air outlet parts is provided with the first gas outlet, second gas outlet
The second gas outlet is provided with the top of partial, the conveyance conduit is provided with flow control valve, and bio-trickling filter top is provided with discharge
Pipeline, is connected with the second gas outlet.
Hydrogen sulfide containing waste gas Jing air intakes from bottom to top by hanging up properly biomembranous first packing layer and the second filler
The biologic packing material of layer, with the biology from top to bottom that spray chamber is pumped into by equipment for separating liquid from solid and Lower tank on biologic packing material
Desulphurization circulating liquid is inversely contacted, and hydrogen sulfide occurs bio-degradation reactions and generates sulphur in the first packing layer and the second packing layer, contains
The biological desulphurization circulation fluid of sulphur separates solid product with liquid through Conical solid-liquid separator in bio-trickling tower bottom, Gu
Body product sulphur recovery, liquid circulation is utilized.
Preferably, described removing hydrogen sulfide produces the bio-trickling filter of sulphur, first packing layer and the second filler
The sidepiece of layer is respectively equipped with temperature controller, the temperature of auto-control H 2 S-containing gas biologic packing material layer during biological cleaning,
Temperature is controlled for 10～40 degree.
Preferably, described removing hydrogen sulfide produces the bio-trickling filter of sulphur, and it is 3 that the air flow method dividing plate is aperture
The lucite spacer of～5mm；The air flow method dividing plate of first packing layer is placed on away from bottom of towe 25cm height.
A kind of method that bio-trickling filter using described removing hydrogen sulfide production sulphur produces sulphur, including following step
Suddenly：
A. cellular SiC is put into a reservoir, is subsequently adding 0.3～2.0 mole of FeCl3Solution, forms SiC and FeCl3
By solid-liquid volume ratio 1:2～4 solid-liquid mixed liquor；
B. solid-liquid mixed liquor is placed in supersonic generator, using the ultrasonication 2～3 hours of 20-25kHz, will
Sample filtering after process, is dried 4～8 hours under the conditions of 100～130 DEG C；
C. the dried sample of step b gained is calcined, is controlled 400～600 DEG C of temperature, heated 2～3 hours, after
Cool to normal temperature with the furnace and obtain Fe/SiC fillers, then carry out ultrasonic vibration 40～80 minutes, obtain modified load biologic packing material；
D. modified load biologic packing material obtained in step c is put into the first packing layer of bio-trickling filter and second to fill out
In the bed of material, the temperature for controlling the first packing layer and the second packing layer is 10～40 degree, then passes to hydrogen sulfide gas, is filled out in biology
Inversely contact with the biological desulphurization circulation fluid from top to bottom that spray chamber is pumped into by equipment for separating liquid from solid and Lower tank on material and send out
Raw biological respinse, to hydrogen sulfide absorption degraded is carried out, and obtains final products sulphur；
The hydrogen sulfide gas initial concentration is controlled in 50～200mg/m3。
Preferably, the modified load of the method for described production sulphur, the packing layer of step d first and the second packing layer
Biologic packing material, the ratio that gas flow is controlled per layer height with biologic packing material volume is in 50～300h-1Between.
Preferably, the temperature controller of first packing layer and the second packing layer side part, auto-control H 2 S-containing gas
The temperature of biologic packing material layer is between 25～35 DEG C during biological cleaning.
The modified load biologic packing material (modified load Fe/SiC fillers) is cellular, and specific surface area is big, and voidage is big,
Load coating uniform, forms dense film, and modified load Fe/SiC fillers are in faintly acid, are adapted to the growth of desulfurization bacterium.
Preferably, the modified load biologic packing material of the step c static preliminary biofilm of high-performance bio desulfurization bacterium circulation fluid
Load bio-trickling filter afterwards and enter Mobile state biofilm, after 3～5 days, on its surface uniform biomembrane is formed.
Preferably, step d is：From bottom to top to hanging up properly in the bio-trickling filter of modified load biologic packing material of film
Hydrogen sulfide gas are passed through, with the life from top to bottom that spray chamber is pumped into by equipment for separating liquid from solid and Lower tank on biologic packing material
Thing desulphurization circulating liquid inversely contacts generation biological respinse, and its hydrogen sulfide gas are carried out with absorption degraded, removes hydrogen sulfide gas
Biodegradable product elemental sulfur in modified load biologic packing material Surface Creation, and with circulation fluid to liquid-solid separator precipitation and separation
Go out sulphur.
Preferably, step c is：The dried sample of step b gained is calcined, temperature 490～510 is controlled
DEG C, heat 2～3 hours, after cool to normal temperature with the furnace and obtain Fe/SiC fillers, then carry out ultrasonic vibration 60 minutes, be modified
Load biologic packing material.
Preferably, the method that described desulfurization produces sulphur, specifically includes step in detail below,
A. 0.5mol ferric chloride solutions and SiC are pressed into solid-liquid volume ratio 1:3 mixing, form solid-liquid mixed liquor.
B. solid-liquid mixed liquor is placed in supersonic generator, ultrasonically treated 2～3h under conditions of 25Hz, 400W；Will
Solution is filtered, and is dried 6h under the conditions of 100 DEG C；
C. drying sample is calcined into 3h at 400 DEG C, normal temperature, then 50 points of ultrasonic vibration for carrying out 60 minutes is cooled to after calcining
Clock, the finished product after being shaken, i.e. modified load biologic packing material, as the first packing layer and the filler of the second packing layer；It is described
The doping of modified load biologic packing material is n (Fe)=0.5～0.9%, the air-flow of the first packing layer point in the bio-trickling filter
Fabric swatch is being placed at bottom of towe 25cm.
D. by the modified load biologic packing material of step c dress after the static preliminary biofilm of high-performance bio desulfurization bacterium circulation fluid
Enter bio-trickling filter and enter Mobile state biofilm, the gas containing hydrogen sulfide is passed into the filler of the first packing layer and the second packing layer
Highly it is respectively in the bio-trickling filter of 30～40cm, gas residence time is 20s, fills on biologic packing material and by separation of solid and liquid
Put the biological desulphurization circulation fluid from top to bottom for being pumped into spray chamber with Lower tank and inversely contact generation biological respinse, temperature controller is certainly
The temperature of dynamic regulation and control H 2 S-containing gas biologic packing material layer during biological cleaning between 25～35 degree, lead to by initial start stage
The initial charge concentration of blender control hydrogen sulfide of waste gas and air is crossed in 50～80mg/m3, stable operation 3 days, in its table
Face is formed after uniform biomembrane, and air inlet all switches to hydrogen sulfide-containing tail gas, and concentration of hydrogen sulfide is in 500～600mg/m3, it is
During system stable operation, circulation fluid obtains final products sulphur Jing after solid-liquid separator separation；The hydrogen sulfide gas are initially dense
Degree control is in 50～200mg/m3。
The prominent effect that has compared with prior art of the present invention is：
1. the present invention is the filler of bio-trickling filter from modified load Fe/SiC, optimizes bio-trickling filter process equipment,
Efficient liquid-solid separator is configured, Sulphur ressource is solved in traditional biological method sulfur removal technology and is wasted and the problems such as sulfur plug, realization
Efficient removal hydrogen sulfide simultaneously produces sulphur.
2. the present invention reaches the most suitable growth temperature of desulfurization bacterium by setting up the method for temperature regulating device to desulfurization bio-trickling filter
Degree such that it is able to ensure the high purification efficiency of equipment；Desulfurization bio-trickling tower subsequently increases equipment for separating liquid from solid, makes precipitation
Efficiently separated with lean solution, it is to avoid blocking of the precipitation to circulating pump；The modified load Fe/SiC biologic packing materials of preparation, tool
There is voidage big, specific surface area is big, Load Balanced, the features such as faintly acid, the hydrogen sulfide gas of high concentration can be processed, and produce
Raw sulphur simple substance, with good environmental benefit and social benefit.
3. while having the features such as raw material is inexpensive, and nontoxic, operating cost is low, equipment operation is easy, the biologic packing material of preparation,
Voidage is big, and Load Balanced, specific surface area is larger, is capable of achieving the process resource of high concentration hydrogen sulfide gas.
Description of the drawings
Fig. 1 is the structural representation of the bio-trickling filter of present invention removing hydrogen sulfide production sulphur.
Specific embodiment
The specific embodiment of the present invention is described in detail below in conjunction with the accompanying drawings.
Referring to Fig. 1, each part numbers explanation in figure：
1st, air intake；2nd, air flow method dividing plate；3rd, the first gas outlet；4th, the second packing layer；5th, shower nozzle；6th, the second outlet
Mouthful；7th, temperature controller；8th, equipment for separating liquid from solid；9th, Lower tank.
A kind of removing hydrogen sulfide of the present invention produces the bio-trickling filter of sulphur, including air intake portion successively from bottom to top
Point, the first packing layer, the first air outlet parts, the second packing layer 4, spray chamber, each several part is concentric cylinder or cube shape,
The second air outlet parts of cone-shaped are additionally provided with above the spray chamber, a upper lateral part of the air intake part of the bottom is provided with
Air intake 1, is sequentially connected the equipment for separating liquid from solid 8 and Lower tank 9 of taper in the middle part of opposite side, the top of the Lower tank 9 is drawn
Go out conveyance conduit Jing circulating pumps to access the middle and upper part of spray chamber and connect downward shower nozzle 5；First packing layer and second is filled out
The bottom of the bed of material is provided with air flow method dividing plate 2 with holes, and the side of the first air outlet parts is provided with the first gas outlet 3, and described
The second gas outlet 6 is provided with the top of two air outlet parts, the conveyance conduit is provided with flow control valve, bio-trickling filter top
Discharge pipe is provided with, is connected with the second gas outlet 6.
Hydrogen sulfide containing waste gas Jing air intakes 1 from bottom to top by hanging up properly biomembranous first packing layer and the second filler
The biologic packing material of layer, with the life from top to bottom that spray chamber is pumped into by equipment for separating liquid from solid 8 and Lower tank 9 on biologic packing material
Thing desulphurization circulating liquid is inversely contacted, and hydrogen sulfide occurs bio-degradation reactions and generates sulphur in the first packing layer and the second packing layer,
Sulfureted biological desulphurization circulation fluid divides solid product and liquid through Conical solid-liquid separator 8 in bio-trickling tower bottom
From solid product sulphur recovery, liquid circulation is utilized.
Preferably, described removing hydrogen sulfide produces the bio-trickling filter of sulphur, first packing layer and the second filler
The sidepiece of layer is respectively equipped with temperature controller 7, the temperature of auto-control H 2 S-containing gas biologic packing material layer during biological cleaning,
Temperature is controlled for 10～40 degree.
Preferably, described removing hydrogen sulfide produces the bio-trickling filter of sulphur, and the air flow method dividing plate 2 is for aperture
The lucite spacer of 3～5mm；The air flow method dividing plate 2 of first packing layer is placed on away from bottom of towe 25cm height.
A kind of method that bio-trickling filter using described removing hydrogen sulfide production sulphur produces sulphur, including following step
Suddenly：
A. cellular SiC is put into a reservoir, is subsequently adding 0.3～2.0 mole of FeCl3Solution, forms SiC and FeCl3
By solid-liquid volume ratio 1:2～4 solid-liquid mixed liquor；
B. solid-liquid mixed liquor is placed in supersonic generator, using the ultrasonication 2～3 hours of 20-25kHz, will
Sample filtering after process, is dried 4～8 hours under the conditions of 100～130 DEG C；
C. the dried sample of step b gained is calcined, is controlled 400～600 DEG C of temperature, heated 2～3 hours, after
Cool to normal temperature with the furnace and obtain Fe/SiC fillers, then carry out ultrasonic vibration 40～80 minutes, obtain modified load biologic packing material；
D. modified load biologic packing material obtained in step c is put into the first packing layer of bio-trickling filter and second to fill out
In the bed of material, the temperature for controlling the first packing layer and the second packing layer is 10～40 degree, then passes to hydrogen sulfide gas, is filled out in biology
Inversely contact with the biological desulphurization circulation fluid from top to bottom that spray chamber is pumped into by equipment for separating liquid from solid 8 and Lower tank 9 on material
Generation biological respinse, to hydrogen sulfide absorption degraded is carried out, and obtains final products sulphur；
The hydrogen sulfide gas initial concentration is controlled in 50～200mg/m3。
Preferably, the modified load of the method for described production sulphur, the packing layer of step d first and the second packing layer
Biologic packing material, the ratio that gas flow is controlled per layer height with biologic packing material volume is in 50～300h-1Between.
Preferably, the temperature controller 7 of first packing layer and the second packing layer side part, auto-control H 2 S-containing gas
The temperature of biologic packing material layer is between 25～35 DEG C during biological cleaning.
The modified load biologic packing material (modified load Fe/SiC fillers) is cellular, and specific surface area is big, and voidage is big,
Load coating uniform, forms dense film, and modified load Fe/SiC fillers are in faintly acid, are adapted to the growth of desulfurization bacterium.
Preferably, the modified load biologic packing material of the step c static preliminary biofilm of high-performance bio desulfurization bacterium circulation fluid
Load bio-trickling filter afterwards and enter Mobile state biofilm, after 3～5 days, on its surface uniform biomembrane is formed.
Preferably, step d is：From bottom to top to hanging up properly in the bio-trickling filter of modified load biologic packing material of film
Be passed through hydrogen sulfide gas, on biologic packing material with by equipment for separating liquid from solid 8 and Lower tank 9 be pumped into spray chamber from top to bottom
Biological desulphurization circulation fluid inversely contacts generation biological respinse, and its hydrogen sulfide gas are carried out with absorption degraded, removes hydrogen sulfide gas
Biodegradable product elemental sulfur in modified load biologic packing material Surface Creation, and separate to liquid-solid separator 8 with circulation fluid
It is settled out sulphur.
Preferably, step c is：The dried sample of step b gained is calcined, temperature 490～510 is controlled
DEG C, heat 2～3 hours, after cool to normal temperature with the furnace and obtain Fe/SiC fillers, then carry out ultrasonic vibration 60 minutes, be modified
Load biologic packing material.
Preferably, the method that described desulfurization produces sulphur, specifically includes step in detail below,
A. 0.5mol ferric chloride solutions and SiC are pressed into solid-liquid volume ratio 1:3 mixing, form solid-liquid mixed liquor.
B. solid-liquid mixed liquor is placed in supersonic generator, ultrasonically treated 2～3h under conditions of 25Hz, 400W；Will
Solution is filtered, and is dried 6h under the conditions of 100 DEG C；
C. drying sample is calcined into 3h at 400 DEG C, normal temperature, then 50 points of ultrasonic vibration for carrying out 60 minutes is cooled to after calcining
Clock, the finished product after being shaken, i.e. modified load biologic packing material, as the first packing layer and the filler of the second packing layer；It is described
The doping of modified load biologic packing material is n (Fe)=0.5～0.9%, the air-flow of the first packing layer point in the bio-trickling filter
Fabric swatch 2 is being placed at bottom of towe 25cm.
D. by the modified load biologic packing material of step c dress after the static preliminary biofilm of high-performance bio desulfurization bacterium circulation fluid
Enter bio-trickling filter and enter Mobile state biofilm, the gas containing hydrogen sulfide is passed into the filler of the first packing layer and the second packing layer
Highly it is respectively in the bio-trickling filter of 30～40cm, gas residence time is 20s, fills on biologic packing material and by separation of solid and liquid
Put 8 and Lower tank 9 be pumped into the biological desulphurization circulation fluid from top to bottom of spray chamber and inversely contact generation biological respinse, temperature controller
The temperature of 7 auto-control H 2 S-containing gas biologic packing material layers during biological cleaning between 25～35 degree, initial start stage,
The initial charge concentration of hydrogen sulfide is controlled in 50～80mg/m by the blender of waste gas and air3, stable operation 3 days, at it
Surface is formed after uniform biomembrane, and air inlet all switches to hydrogen sulfide-containing tail gas, and concentration of hydrogen sulfide is in 500～600mg/m3,
During system stable operation, circulation fluid obtains final products sulphur Jing after solid-liquid separator separation；
The hydrogen sulfide gas initial concentration is controlled in 50～200mg/m3。
Embodiment 1
A. 0.5mol ferric chloride solutions and SiC are pressed into solid-liquid volume ratio 1:3 mixing, form solid-liquid mixed liquor.
B. solid-liquid mixed liquor is placed in supersonic generator, ultrasonically treated 2～3h under conditions of 25Hz, 400W；Will
Solution is filtered, and is dried 6h under the conditions of 105 DEG C；
C. drying sample is calcined into 3h at 400 DEG C, normal temperature, then 50 points of ultrasonic vibration for carrying out 60 minutes is cooled to after calcining
Clock, the finished product after being shaken, i.e. modified load biologic packing material, as the first packing layer and the filler of the second packing layer；It is described
The doping of modified load biologic packing material is n (Fe)=0.5～0.9%, the air-flow of the first packing layer point in the bio-trickling filter
Fabric swatch 2 is being placed at bottom of towe 25cm.
D. by the modified load biologic packing material of step c dress after the static preliminary biofilm of high-performance bio desulfurization bacterium circulation fluid
Enter bio-trickling filter and enter Mobile state biofilm, the gas containing hydrogen sulfide is passed into the filler of the first packing layer and the second packing layer
Highly it is respectively in the bio-trickling filter of 30～40cm, gas residence time is 20s, fills on biologic packing material and by separation of solid and liquid
Put 8 and Lower tank 9 be pumped into the biological desulphurization circulation fluid from top to bottom of spray chamber and inversely contact generation biological respinse, temperature controller
The temperature of 7 auto-control H 2 S-containing gas biologic packing material layers during biological cleaning between 25～35 DEG C, initial start stage,
The initial charge concentration of hydrogen sulfide is controlled in 50～80mg/m by the blender of waste gas and air3, stable operation 3 days, at it
Surface forms uniform biomembrane, and air inlet all switches to hydrogen sulfide-containing tail gas, and (concentration of hydrogen sulfide is in 500～600mg/m3), it is
During system stable operation, circulation fluid obtains final products sulphur Jing after solid-liquid separator separation；
System desulfuration efficiency reaches more than 90%, and sulphur yield is 60%.
Embodiment 2
A. cellular SiC is put into a reservoir, is subsequently adding 0.6 mole of FeCl3Solution, forms SiC and FeCl3By solid
Liquid volume ratio 1:3.5 solid-liquid mixed liquor.
B. solid-liquid mixed liquor is placed in supersonic generator, using the ultrasonication 3 hours of 20-25kHz, will be processed
Sample filtering afterwards, is dried 3 hours under the conditions of 105 DEG C.
C. the step b dried sample of gained is calcined, is controlled 400～600 DEG C of temperature, heated 3 hours, after with stove
It is cooled to normal temperature and obtains Fe/SiC fillers, then carry out ultrasonic vibration 60 minutes, obtains modified load biologic packing material and fill out as first
The filler of the bed of material and the second packing layer；The doping of modified load biologic packing material be n (Fe)=0.5～0.9%, the bio-trickling
The airflow-distribution board 2 of the first packing layer is being placed at bottom of towe 25cm in tower.
D. by the modified load biologic packing material of step c dress after the static preliminary biofilm of high-performance bio desulfurization bacterium circulation fluid
Enter bio-trickling filter and enter Mobile state biofilm, the gas containing hydrogen sulfide is passed into the filler of the first packing layer and the second packing layer
Highly it is respectively in the bio-trickling filter of 40～50cm, gas residence time is 30s, fills on biologic packing material and by separation of solid and liquid
Put 8 and Lower tank 9 be pumped into the biological desulphurization circulation fluid from top to bottom of spray chamber and inversely contact generation biological respinse, temperature controller
Between 30 degree, initial start stage passes through the temperature of 7 auto-control H 2 S-containing gas biologic packing material layers during biological cleaning
The initial charge concentration of the blender control hydrogen sulfide of waste gas and air is in 50～70mg/m3, stable operation 3 days, on its surface
Uniform biomembrane is formed, air inlet all switches to hydrogen sulfide-containing tail gas, and (concentration of hydrogen sulfide is in 500～600mg/m3), system is steady
In determining running, circulation fluid obtains final products sulphur Jing after solid-liquid separator separation.
System desulfuration efficiency reaches more than 95%, and sulphur yield is 60%.
Embodiment 3：
A. cellular SiC is put into a reservoir, is subsequently adding 1 mole of FeCl3Solution, forms SiC and FeCl3By solid-liquid
Volume ratio 1:3 solid-liquid mixed liquor.
B. solid-liquid mixed liquor is placed in supersonic generator, using the ultrasonication 2.5 hours of 20-25kHz, will be located
Sample filtering after reason, is dried 4 hours under the conditions of 110 DEG C.
C. the dried sample of step b gained is calcined, is controlled 500 DEG C of temperature, heated 3 hours, rear along with the furnace cooling
Fe/SiC fillers are obtained to normal temperature, then carries out ultrasonic vibration 60 minutes, obtain modified load biologic packing material as the first packing layer
With the filler of the second packing layer；The doping of modified load biologic packing material is n (Fe)=0.5～0.9%, in the bio-trickling filter
The airflow-distribution board 2 of the first packing layer is being placed at bottom of towe 25cm.
D. by the modified load biologic packing material of step c dress after the static preliminary biofilm of high-performance bio desulfurization bacterium circulation fluid
Enter bio-trickling filter and enter Mobile state biofilm, the gas containing hydrogen sulfide is passed into the filler of the first packing layer and the second packing layer
Highly it is respectively in the bio-trickling filter of 50cm, gas residence time is 35s, on biologic packing material and by equipment for separating liquid from solid 8
The biological desulphurization circulation fluid from top to bottom for being pumped into spray chamber with Lower tank 9 inversely contacts generation biological respinse, and temperature controller 7 is certainly
The temperature of dynamic regulation and control H 2 S-containing gas biologic packing material layer during biological cleaning between 30 degree, initial start stage, by giving up
The initial charge concentration of the blender control hydrogen sulfide of gas and air is in 60～80mg/m3, stable operation 3 days, in its surface shape
Uniformly biomembrane, air inlet all switches to hydrogen sulfide-containing tail gas, and (concentration of hydrogen sulfide is in 600～700mg/m3), system stability
In running, circulation fluid obtains final products sulphur Jing after solid-liquid separator separation.
System desulfuration efficiency reaches more than 96%, and sulphur yield is 62%.
Claims (10)
1. a kind of removing hydrogen sulfide produces the bio-trickling filter of sulphur, it is characterized in that, including air intake portion successively from bottom to top
Point, the first packing layer, the first air outlet parts, the second packing layer (4), spray chamber, each several part is concentric cylinder or cube
Shape, is additionally provided with the second air outlet parts of cone-shaped, a upper lateral part of the air intake part of the bottom above the spray chamber
Air intake (1) is provided with, the equipment for separating liquid from solid (8) and Lower tank (9) of taper, the Lower tank are sequentially connected in the middle part of opposite side
(9) conveyance conduit Jing circulating pumps are drawn and is accessed the middle and upper part of spray chamber and is connected downward shower nozzle (5) in top；Described first fills out
The bottom of the bed of material and the second packing layer is provided with air flow method dividing plate (2) with holes, and the side of the first air outlet parts is provided with first
Gas outlet (3), is provided with the second gas outlet (6) at the top of second air outlet parts, the conveyance conduit is provided with flow control
Valve processed, bio-trickling filter top is provided with discharge pipe, is connected with the second gas outlet (6).
2. removing hydrogen sulfide as claimed in claim 1 produces the bio-trickling filter of sulphur, it is characterized in that, first packing layer
Temperature controller (7) is respectively equipped with the sidepiece of the second packing layer, auto-control H 2 S-containing gas are biological during biological cleaning
The temperature of packing layer, controls temperature for 10～40 degree.
3. removing hydrogen sulfide as claimed in claim 1 produces the bio-trickling filter of sulphur, it is characterized in that,
The air flow method dividing plate (2) is lucite spacer that aperture is 3～5mm；
The air flow method dividing plate (2) of first packing layer is placed on away from bottom of towe 25cm height.
4. a kind of usage right requires the method that the bio-trickling filter of the removing hydrogen sulfide production sulphur described in 1 produces sulphur, its
It is characterized in that, comprises the following steps：
A. cellular SiC is put into a reservoir, is subsequently adding 0.3～2.0 mole of FeCl3Solution, forms SiC and FeCl3By solid
Liquid volume ratio 1:2～4 solid-liquid mixed liquor；
B. solid-liquid mixed liquor is placed in supersonic generator, using the ultrasonication 2～3 hours of 20-25kHz, will be processed
Sample filtering afterwards, is dried 4～8 hours under the conditions of 100～130 DEG C；
C. the step b dried sample of gained is calcined, is controlled 400～600 DEG C of temperature, heated 2～3 hours, after with stove
It is cooled to normal temperature and obtains Fe/SiC fillers, then carry out ultrasonic vibration 40～80 minutes, obtains modified load biologic packing material；
D., modified load biologic packing material obtained in step c is put into first packing layer and the second packing layer of bio-trickling filter
In, the temperature for controlling the first packing layer and the second packing layer is 10～40 degree, hydrogen sulfide gas is then passed to, on biologic packing material
Inversely contact with the biological desulphurization circulation fluid from top to bottom that spray chamber is pumped into by equipment for separating liquid from solid (8) and Lower tank (9)
Generation biological respinse, to hydrogen sulfide absorption degraded is carried out, and obtains final products sulphur；
The hydrogen sulfide gas initial concentration is controlled in 50～200mg/m3。
5. the method for production sulphur as claimed in claim 4, is characterized in that,
The modified load biologic packing material of the packing layer of step d first and the second packing layer, per layer height gas flow is controlled
With the ratio of biologic packing material volume in 50～300h-1Between.
6. the method for production sulphur as claimed in claim 4, is characterized in that,
First packing layer and the temperature controller (7) of the second packing layer side part, auto-control H 2 S-containing gas are biological net
The temperature of biologic packing material layer is between 25～350C during change.
7. the method for production sulphur as claimed in claim 4, is characterized in that,
The modified load biologic packing material of step c loading biological drop after the static preliminary biofilm of high-performance bio desulfurization bacterium circulation fluid
Filter tower enters Mobile state biofilm, after 3～5 days, on its surface uniform biomembrane is formed.
8. the method for production sulphur as claimed in claim 4, is characterized in that,
Step d is：From bottom to top it is passed through hydrogen sulfide into the bio-trickling filter of the modified load biologic packing material for hanging up properly film
Gas, takes off on biologic packing material with the biology from top to bottom that spray chamber is pumped into by equipment for separating liquid from solid (8) and Lower tank (9)
Sulfur cycle liquid inversely contacts generation biological respinse, and its hydrogen sulfide gas are carried out with absorption degraded, removes the biology of hydrogen sulfide gas
The product elemental sulfur of degraded in modified load biologic packing material Surface Creation, and with circulation fluid to liquid-solid separator (8) precipitation and separation
Go out sulphur.
9. the method for production sulphur as claimed in claim 4, is characterized in that,
Step c is：The dried sample of step b gained is calcined, 490～510 DEG C of temperature is controlled, heating 2～3 is little
When, after cool to normal temperature with the furnace and obtain Fe/SiC fillers, then carry out ultrasonic vibration 60 minutes, obtain modified load biologic packing material.
10. the method for production sulphur as claimed in claim 4, is characterized in that including step in detail below：
A. 0.5mol ferric chloride solutions and SiC are pressed into solid-liquid volume ratio 1:3 mixing, form solid-liquid mixed liquor.
B. solid-liquid mixed liquor is placed in supersonic generator, ultrasonically treated 2～3h under conditions of 25Hz, 400W；By solution
Filter, and 6h is dried under the conditions of 100 DEG C；
C. drying sample is calcined into 3h at 400 DEG C, is cooled to normal temperature after calcining, then carry out the ultrasonic vibration 50 minutes of 60 minutes,
Finished product after being shaken, i.e. modified load biologic packing material, as the first packing layer and the filler of the second packing layer；It is described modified
Load biologic packing material doping be n (Fe)=0.5～0.9%, the airflow-distribution board of the first packing layer in the bio-trickling filter
(2) placing at bottom of towe 25cm.
D. by the loading life after the static preliminary biofilm of high-performance bio desulfurization bacterium circulation fluid of the modified load biologic packing material of step c
Thing drop filter tower enters Mobile state biofilm, and the gas containing hydrogen sulfide is passed into the packed height of the first packing layer and the second packing layer
Respectively in the bio-trickling filter of 30～40cm, gas residence time is 20s, on biologic packing material and by equipment for separating liquid from solid
(8) it is pumped into the biological desulphurization circulation fluid from top to bottom of spray chamber and inversely contacts generation biological respinse, temperature control with Lower tank (9)
The temperature of device (7) auto-control H 2 S-containing gas biologic packing material layer during biological cleaning starts between 25～35 degree
At the initial stage, the initial charge concentration of hydrogen sulfide is controlled in 50～80mg/m by the blender of waste gas and air3, stable operation 3 days,
After its surface forms uniform biomembrane, air inlet all switches to hydrogen sulfide-containing tail gas, and concentration of hydrogen sulfide is in 500～600mg/
m3, during system stable operation, circulation fluid obtains final products sulphur Jing after solid-liquid separator separation；
The hydrogen sulfide gas initial concentration is controlled in 50～200mg/m3.
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| CN109621703A (en) * | 2019-01-11 | 2019-04-16 | 四川大学 | H is removed for enhanced biological2The ferriferous oxide of S-charcoal composite material and preparation method |
| CN116459663A (en) * | 2023-03-13 | 2023-07-21 | 上海安居乐环保科技股份有限公司 | Catalytic desulfurization process and reaction device for removing hydrogen sulfide in sewage and waste gas |
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