CN105999951B - A kind of processing method of slurry-spraying pelletizing tail gas cooling and deodorizing desulphurization denitration - Google Patents

A kind of processing method of slurry-spraying pelletizing tail gas cooling and deodorizing desulphurization denitration Download PDF

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CN105999951B
CN105999951B CN201610508054.8A CN201610508054A CN105999951B CN 105999951 B CN105999951 B CN 105999951B CN 201610508054 A CN201610508054 A CN 201610508054A CN 105999951 B CN105999951 B CN 105999951B
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slurry
tail gas
activated carbon
mass ratio
desulphurization denitration
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CN105999951A (en
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严纪文
赵凤良
宋海波
许传高
杨鑫哲
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Hulunbuir Northeast Fufeng Biotechnology Co Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D50/00—Combinations of methods or devices for separating particles from gases or vapours
    • 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
    • B01D53/02—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 adsorption, e.g. preparative gas chromatography
    • 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
    • B01D53/38—Removing components of undefined structure
    • B01D53/44—Organic components
    • 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
    • B01D53/76—Gas phase processes, e.g. by using aerosols
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
    • B01J20/04—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising compounds of alkali metals, alkaline earth metals or magnesium
    • B01J20/046—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising compounds of alkali metals, alkaline earth metals or magnesium containing halogens, e.g. halides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
    • B01J20/10—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising silica or silicate
    • B01J20/12—Naturally occurring clays or bleaching earth
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
    • B01J20/10—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising silica or silicate
    • B01J20/14—Diatomaceous earth
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
    • B01J20/20—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising free carbon; comprising carbon obtained by carbonising processes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/22—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising organic material
    • B01J20/24—Naturally occurring macromolecular compounds, e.g. humic acids or their derivatives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2257/00—Components to be removed
    • B01D2257/30—Sulfur compounds
    • B01D2257/302—Sulfur oxides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2257/00—Components to be removed
    • B01D2257/40—Nitrogen compounds

Abstract

The invention belongs to environmental technology field, discloses a kind of processing method of slurry-spraying pelletizing tail gas cooling and deodorizing desulphurization denitration, it comprises the following steps：Slurry-spraying pelletizing tail gas through venturi spray column and electrostatic precipitator cooling dedusting, then by plasma reactor taste removal, then by ozone generator, finally enters progress desulphurization denitration processing in the reactor equipped with adsorbent, after being disposed, discharge first.Processing method systematization of the present invention is good, and pollutant process is thorough, and cost is cheap.

Description

A kind of processing method of slurry-spraying pelletizing tail gas cooling and deodorizing desulphurization denitration
Technical field
The invention belongs to environmental technology field, and in particular to a kind of processing of slurry-spraying pelletizing tail gas cooling and deodorizing desulphurization denitration Method.
Background technology
Slurry-spraying pelletizing is the moisture (the liquid general name that can be vaporized) in slurry (mixture, solution and solute), passes through spray It is mapped in equipment, with the method for heating, taking out pressure, after vaporizing the moisture content in slurry and separating, retention will not gasify (certain Under the conditions of) solid form granular process and claim slurry-spraying pelletizing.
Compound fertilizer workshop is during composite fertilizer is produced, and using spray granulation, composition is more complicated in its tail gas, Mainly have floating dust, dust and a tiny compound fertilizer granules, gas Main Ingredients and Appearance for caused by fire coal it is a large amount of it is poisonous, have stimulation The gas of property smell.Predominant gas composition has hydrogen sulfide, sulfur dioxide, ammonia nitrogen, ketone, aldehydes, esters, benzene class dust, water to steam Gas etc..Especially in rainy days or relatively low air pressure, often result in plant area and neighbouring resident living area smog is boundless and indistinct, acid mist and acid rain Harm it is quite serious, the concentration of emission of flue dust and waste gas considerably beyond discharging standards regulation, to environment and human body Larger negative effect is produced, so compound fertilizer workshop treating tail gas is very urgent, it is necessary to administered.How systematically to control Reason slurry-spraying pelletizing tail gas is our very urgent technical issues that need to address.
The content of the invention
It is an object of the invention to provide a kind of processing of the effective slurry-spraying pelletizing tail gas cooling and deodorizing desulphurization denitration of system Method, high treating effect, pollutant process is thorough, and cost is cheap.
To achieve the above object, the present invention provides following technical scheme：
A kind of processing method of slurry-spraying pelletizing tail gas cooling and deodorizing desulphurization denitration, it comprises the following steps：
Slurry-spraying pelletizing tail gas through venturi spray column and electrostatic precipitator cooling dedusting, then passes through plasma reaction first Device taste removal, then by ozone generator, finally enter progress desulphurization denitration processing in the reactor equipped with adsorbent, be disposed Afterwards, discharge；
The adsorbent is prepared according to following technique
Step 1）Sepiolite and montmorillonite are mixed, is then added in disintegrating machine and is crushed, with calcirm-fluoride, high alumina alum Soil mixing, then be ground, it is 100 target minreal matter powder to obtain particle diameter；Wherein, sepiolite, montmorillonite, calcirm-fluoride and high alumina The mass ratio of alumina is 7-12:5-9:5-9:2-4；
Step 2）By broomcorn straw and peanut shell according to 1:1 mass ratio, which is put into pulverizer, to be crushed, and then crosses 100 mesh Sieve obtains agricultural wastes powder, is transferred in agitator tank, then toward addition cationic starch and deionized water in agitator tank, stirring Suspension uniformly is obtained, then adds step 1）Gained mineral matter powder, 500 turns/min stirring 10min, then 12 hours are stood, mistake Precipitation is collected in filter, and precipitation is placed in into 80 DEG C of drying, is finally crushed and is obtained the particle of 50 mesh, as component A；Wherein, agriculture waste Thing powder, cationic starch, step 1）Gained mineral matter powder and the mass ratio of deionized water are 7-9:2-3:10-15:25-35；
Step 3）The activated carbon for weighing 50 mesh is placed in container, dilute nitre that then volume fraction of the quality such as addition is 10% Acid solution, soak 6 hours, then take out activated carbon, wash, obtain modified activated carbon；
Step 4）By step 3）Gained modified activated carbon, nano diatomite and deionized water are added sequentially to agitator tank In, heat while stirring, it is to be heated to 100 DEG C when, maintain 100 DEG C continue stirring evaporation moisture, treat moisture 5%（w/w） When, stop heating, naturally cool to room temperature, be then calcined 3 hours at 500 DEG C, take out, be ground into the particle of 20 mesh, be Component B；Wherein, step 3）The mass ratio of gained modified activated carbon, nano diatomite and deionized water is 10-20:3-5:20- 30；
Step 5）By component A and component B according to 5-9:8-14 mass ratio mixing, stirs, produces.
The beneficial effect that the present invention obtains mainly includes：
The present invention using cool, precipitator dust, plasma reactor taste removal, ozone purification carbon monoxide, nitrogen oxygen Compound, hydrocarbon and adsorbent remove ammonia nitrogen and sulfide, system have handled slurry-spraying pelletizing tail gas；Ozone occurs Device produces ozone, to remove the gas phase organic substance that can not be removed in tail gas with spray and electrostatic means, such as ketone, aldehyde Class, esters, benzene class etc., make its fully oxidized, decomposition, generate harmless carbon dioxide and water；Adsorbent of the present invention is used to remove The pollutants such as the ammonia nitrogen and sulfide that can not react completely；
Performance of the adsorbent of the present invention is high, and adsorption capacity is good, stable performance；By adding cationic starch to sepiolite, illiteracy De- stone, calcirm-fluoride and alumine carry out surface modifying and decorating so that powder carries electric charge, improves the energy of adsorption to dust Power, additionally it is possible to so that product has certain electrostatic adsorption；The present invention to activated carbon by having carried out surface oxidation Processing, so as to improve the content of surface oxygen-containing acid group, strengthens the polarity on surface, is more easy to adsorb polar substances；Modified active Charcoal contains substantial amounts of micropore, has strong adsorption function, it is modified, and makes its contact area with other materials significantly Increase, possesses good suction-operated to gas etc.；The present invention adds the aperture number of adsorbent by soaking the techniques such as roasting Mesh, surface roughness and specific surface area are improved, enhances adsorption capacity：Different material of the present invention uses different particle diameters, Increase the specific surface area of adsorbent；Adsorbent prepared by the present invention, compatibility is reasonable, and each raw material mutually cooperates with, can reach compared with Good dust-removal and desulfurizing denitration effect；Invention also uses agricultural waste material as raw material, cost is saved, improves enterprise The added value of industry.
Embodiment
In order that those skilled in the art more fully understand the technical scheme in the application, have below in conjunction with the application Body embodiment, the present invention is more clearly and completely described, it is clear that described embodiment is only the application one Divide embodiment, rather than whole embodiments.Based on the embodiment in the application, those of ordinary skill in the art are not making The every other embodiment obtained under the premise of creative work, should all belong to the scope of protection of the invention.
Embodiment 1
A kind of processing method of slurry-spraying pelletizing tail gas cooling and deodorizing desulphurization denitration,
Slurry-spraying pelletizing tail gas through venturi spray column and electrostatic precipitator cooling dedusting, then passes through plasma reaction first Device taste removal, then by ozone generator, finally enter progress desulphurization denitration processing in the fixed bed reactors equipped with adsorbent, place After reason, discharge；
The adsorbent is prepared according to following technique
Step 1）Sepiolite and montmorillonite are mixed, is then added in disintegrating machine and is crushed, then with calcirm-fluoride, high alumina Alumina mixes, then is ground, and it is 100 target minreal matter powder to obtain particle diameter；Wherein, sepiolite, montmorillonite, calcirm-fluoride and height The mass ratio of bauxite is 7:5:5:2；
Step 2）By broomcorn straw and peanut shell according to 1:1 mass ratio, which is put into pulverizer, to be crushed, and then crosses 100 mesh Sieve obtains agricultural wastes powder, is transferred in agitator tank, then toward addition cationic starch and deionized water in agitator tank, stirring Suspension uniformly is obtained, then adds step 1）Gained mineral matter powder, 500 turns/min stirring 10min, then 12 hours are stood, mistake Precipitation is collected in filter, and precipitation is placed in into 80 DEG C of drying, is finally crushed and is obtained the particle of 50 mesh, as component A；Wherein, agriculture waste Thing powder, cationic starch, step 1）Gained mineral matter powder and the mass ratio of deionized water are 7:2:10:25；
Step 3）The activated carbon for weighing 50 mesh is placed in container, dilute nitre that then volume fraction of the quality such as addition is 10% Acid solution, soak 6 hours, then take out activated carbon, wash, obtain modified activated carbon；
Step 4）By step 3）Gained modified activated carbon, nano diatomite and deionized water are added sequentially to agitator tank In, heat while stirring, it is to be heated to 100 DEG C when, maintain 100 DEG C continue stirring evaporation moisture, treat moisture 5%（w/w） When, stop heating, naturally cool to room temperature, be then calcined 3 hours at 500 DEG C, take out, be ground into the particle of 20 mesh, be Component B；Wherein, step 3）The mass ratio of gained modified activated carbon, nano diatomite and deionized water is 10:3:20；
Step 5）By component A and component B according to 5:8 mass ratio mixing, stirs, produces.
Embodiment 2
A kind of processing method of slurry-spraying pelletizing tail gas cooling and deodorizing desulphurization denitration,
Slurry-spraying pelletizing tail gas through venturi spray column and electrostatic precipitator cooling dedusting, then passes through plasma reaction first Device taste removal, then by ozone generator, finally enter progress desulphurization denitration processing in the reactor equipped with adsorbent, be disposed Afterwards, discharge；
The adsorbent is prepared according to following technique
Step 1）Sepiolite and montmorillonite are mixed, is then added in disintegrating machine and is crushed, then with calcirm-fluoride, high alumina Alumina mixes, then is ground, and it is 100 target minreal matter powder to obtain particle diameter；Wherein, sepiolite, montmorillonite, calcirm-fluoride and height The mass ratio of bauxite is 12:9:9:4；
Step 2）By broomcorn straw and peanut shell according to 1:1 mass ratio, which is put into pulverizer, to be crushed, and then crosses 100 mesh Sieve obtains agricultural wastes powder, is transferred in agitator tank, then toward addition cationic starch and deionized water in agitator tank, stirring Suspension uniformly is obtained, then adds step 1）Gained mineral matter powder, 500 turns/min stirring 10min, then 12 hours are stood, mistake Precipitation is collected in filter, and precipitation is placed in into 80 DEG C of drying, is finally crushed and is obtained the particle of 50 mesh, as component A；Wherein, agriculture waste Thing powder, cationic starch, step 1）Gained mineral matter powder and the mass ratio of deionized water are 9:3:15:35；
Step 3）The activated carbon for weighing 50 mesh is placed in container, dilute nitre that then volume fraction of the quality such as addition is 10% Acid solution, soak 6 hours, then take out activated carbon, wash, obtain modified activated carbon；
Step 4）By step 3）Gained modified activated carbon, nano diatomite and deionized water are added sequentially to agitator tank In, heat while stirring, it is to be heated to 100 DEG C when, maintain 100 DEG C continue stirring evaporation moisture, treat moisture 5%（w/w） When, stop heating, naturally cool to room temperature, be then calcined 3 hours at 500 DEG C, take out, be ground into the particle of 20 mesh, be Component B；Wherein, step 3）The mass ratio of gained modified activated carbon, nano diatomite and deionized water is 20:5:30；
Step 5）By component A and component B according to 9:14 mass ratio mixing, stirs, produces.
Embodiment 3
Major pollutants are as follows in tail gas after ozone reactor processing：SO2For 179mg/Nm3, NOx 83mg/Nm3, powder Dirt（2.5 μm of ＜）For 27mg/Nm3, air speed 5000h-1, while adsorbent prepared by embodiment 1 is routed to fixed bed reaction In device, the time of the out of stock dedusting of desulfurization is set as 30min, is determined the out of stock dust removal efficiency of desulfurization, is specifically shown in Table 1：
Table 1
Pollutant type SO2（mg/Nm3） NOx（mg/Nm3） Dust（mg/Nm3）
30min 5.1 2.3 It is not detected by
Above in association with specific embodiment, invention has been described, it will be appreciated by those skilled in the art that this A little descriptions are all exemplary, are not limiting the scope of the invention.Those skilled in the art can be according to the present invention Spirit and principle various variants and modifications are made to the present invention, these variants and modifications are also within the scope of the invention.

Claims (1)

1. a kind of processing method of slurry-spraying pelletizing tail gas cooling and deodorizing desulphurization denitration, it comprises the following steps：
Slurry-spraying pelletizing tail gas through venturi spray column and electrostatic precipitator cooling dedusting, is then removed by plasma reactor first Taste, then by ozone generator, progress desulphurization denitration processing in the reactor equipped with adsorbent is finally entered, after being disposed, Discharge；
The adsorbent is prepared according to following technique：
Step 1）Sepiolite and montmorillonite are mixed, is then added in disintegrating machine and is crushed, then with calcirm-fluoride, alumine Mixing, is then ground, it is 100 target minreal matter powder to obtain particle diameter；
Step 2）By broomcorn straw and peanut shell according to 1:1 mass ratio, which is put into pulverizer, to be crushed, and is obtained after 100 mesh sieves Agricultural wastes powder, is transferred in agitator tank, then toward addition cationic starch and deionized water in agitator tank, stirs To suspension, step 1 is added）Gained mineral matter powder, 500 turns/min stirring 10min, then 12 hours are stood, it is heavy to be collected by filtration Form sediment, precipitation is placed in 80 DEG C of drying, finally crush and obtain the particle of 50 mesh, as component A；
Step 3）The activated carbon for weighing 50 mesh is placed in container, then the dust technology that the volume fraction of quality is 10% such as to add molten Liquid, soak 6 hours, then take out activated carbon, wash, obtain modified activated carbon；
Step 4）By step 3）Gained modified activated carbon, nano diatomite and deionized water are added sequentially in agitator tank, side Heat side stirring, it is to be heated to 100 DEG C when, maintain 100 DEG C continue stirring evaporation moisture, treat moisture 5%（w/w）When, stop Only heat, naturally cool to room temperature, be then calcined 3 hours at 500 DEG C, taken out, be ground into the particle of 20 mesh, as component B；
Step 5）By component A and component B according to 5-9:8-14 mass ratio mixing, stirs, produces；
The step 1）In, sepiolite, montmorillonite, the mass ratio of calcirm-fluoride and alumine are 7-12:5-9:5-9:2-4；
The step 2）In, agricultural wastes powder, cationic starch, step 1）The quality of gained mineral matter powder and deionized water Than for 7-9:2-3:10-15:25-35；
The step 4）In, step 3）The mass ratio of gained modified activated carbon, nano diatomite and deionized water is 10-20: 3-5:20-30。
CN201610508054.8A 2016-07-01 2016-07-01 A kind of processing method of slurry-spraying pelletizing tail gas cooling and deodorizing desulphurization denitration Active CN105999951B (en)

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CN105688849A (en) * 2016-03-17 2016-06-22 杭州富阳高博信息技术服务有限公司 Multifunctional desulfurization and denitrification environment-friendly preparation and preparation method thereof

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Publication number Priority date Publication date Assignee Title
CN101337152A (en) * 2008-08-07 2009-01-07 大连海事大学 Resource ozone oxidation dry method capable of removing sulfur dioxide and nitrogen oxides in flue gas
CN103182243A (en) * 2013-03-25 2013-07-03 江苏中材环境工程有限公司 Preparation and application method of smoke denitrifying agent
CN204806906U (en) * 2015-03-21 2015-11-25 李正福 Big flue low temperature waste gas waste heat recovery of sintering and purifier
CN104888739A (en) * 2015-06-28 2015-09-09 内蒙古阜丰生物科技有限公司 Preparation for treating fume produced by amino acid production process
CN105536421A (en) * 2016-03-09 2016-05-04 山东蓝博环保设备有限公司 Wet type electrostatic dust collector
CN105688849A (en) * 2016-03-17 2016-06-22 杭州富阳高博信息技术服务有限公司 Multifunctional desulfurization and denitrification environment-friendly preparation and preparation method thereof

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