CN105999951A - Treatment method for cooling, deodorization, desulfurization and denitrification of slurry-spraying granulation tail gas - Google Patents

Treatment method for cooling, deodorization, desulfurization and denitrification of slurry-spraying granulation tail gas Download PDF

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Publication number
CN105999951A
CN105999951A CN201610508054.8A CN201610508054A CN105999951A CN 105999951 A CN105999951 A CN 105999951A CN 201610508054 A CN201610508054 A CN 201610508054A CN 105999951 A CN105999951 A CN 105999951A
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slurry
tail gas
activated carbon
mass ratio
deionized water
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CN105999951B (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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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 the technical field of environmental protection, and discloses a treatment method for cooling, deodorization, desulfurization and denitrification of slurry-spraying granulation tail gas. The treatment method comprises the following steps: performing cooling dust collection on the slurry-spraying granulation tail gas by virtue of a venturi spraying tower and an electrostatic dust collector, performing deodorization by virtue of a plasma reactor, guiding the slurry-spraying granulation tail gas to pass through an ozone generator and finally enter a reactor loaded with an adsorbent for desulfurization and denitrification, and discharging the slurry-spraying granulation tail gas in treatment. The treatment method is high in systematicity, complete in pollutant treatment and low in cost.

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, be specifically related to the processing method of a kind of slurry-spraying pelletizing tail gas cooling and deodorizing desulphurization denitration.
Background technology
Slurry-spraying pelletizing is the moisture (the liquid general name that can vaporize) in slip (mixture, solution and solute), by being ejected in equipment, by the method heated, take out pressure, after making the moisture content in slip vaporize and separate, the solid of will not gasify (under certain condition) of retention forms granular process and claims slurry-spraying pelletizing.
Compound fertilizer workshop is during producing compound fertilizer, use spray granulation, in its tail gas, composition is more complicated, mainly has floating dust, dust and tiny compound fertilizer granules, the gas of the abnormal smells from the patient the most poisonous, irritant that gas Main Ingredients and Appearance is brought by fire coal.Predominant gas composition has hydrogen sulfide, sulfur dioxide, ammonia nitrogen, ketone, aldehydes, esters, benzene class dust, steam etc..Especially overcast and rainy or time air pressure is relatively low, often result in plant area and neighbouring resident living area smog is boundless and indistinct, the harm of acid mist and acid rain is the most serious, the concentration of emission of flue dust and waste gas is considerably beyond the regulation of discharging standards, environment and human body are produced bigger negative effect, so compound fertilizer workshop treating tail gas is very urgent, it is necessary to administer.The most systematically administering slurry-spraying pelletizing tail gas is our very urgent technical issues that need to address.
Summary of the invention
It is an object of the invention to provide the processing method of a kind of system effective slurry-spraying pelletizing tail gas cooling and deodorizing desulphurization denitration, high treating effect, Pollutant Treatment is thorough, with low cost.
For achieving the above object, the present invention provides following technical scheme:
The processing method of a kind of slurry-spraying pelletizing tail gas cooling and deodorizing desulphurization denitration, it comprises the steps:
First slurry-spraying pelletizing tail gas through venturi spray column and electrostatic precipitator cooling dedusting, then by plasma reactor taste removal, then by ozonator, finally enter equipped with carrying out desulphurization denitration process in the reactor of adsorbent, after being disposed, discharge；
Described adsorbent is prepared according to following technique
Meerschaum and montmorillonite are mixed by step 1), are then added in disintegrating machine crush, mix with calcium fluoride, alumine, then be ground, and obtaining particle diameter is 100 target minreal matter powder；Wherein, the mass ratio of meerschaum, montmorillonite, calcium fluoride and alumine is 7-12:5-9:5-9:2-4；
Step 2) broomcorn straw and Pericarppium arachidis hypogaeae are put into pulverizing in pulverizer according to the mass ratio of 1:1, then cross 100 mesh sieves and obtain agricultural wastes powder, transfer in agitator tank, then in agitator tank, add cationic starch and deionized water, it is uniformly mixing to obtain suspension, being subsequently adding step 1) gained mineral powder, 500 turns/min stirs 10min, then stands 12 hours, precipitation is collected by filtration, precipitation is placed in 80 DEG C of drying, finally pulverizes the granule obtaining 50 mesh, be component A；Wherein, the mass ratio of agricultural wastes powder, cationic starch, step 1) gained mineral powder and deionized water is 7-9:2-3:10-15:25-35；
Step 3) weighs the activated carbon of 50 mesh and is placed in container, and then the dilute nitric acid solution that volume fraction is 10% of the quality such as interpolation, soaks 6 hours, then take out activated carbon, and washing obtains modified activated carbon；
Step 3) gained modified activated carbon, nano diatomite and deionized water are added sequentially in agitator tank by step 4), heat while stirring, to be heated to 100 DEG C time, maintain 100 DEG C continue stirring transpiring moistures, until moisture at 5%(w/w) time, stop heating, naturally cool to room temperature, then roasting 3 hours at 500 DEG C, take out, it is ground into the granule of 20 mesh, is component B；Wherein, the mass ratio of step 3) gained modified activated carbon, nano diatomite and deionized water is 10-20:3-5:20-30；
Component A and component B are mixed by step 5) according to the mass ratio of 5-9:8-14, stir, to obtain final product.
The beneficial effect that the present invention obtains specifically includes that
The present invention use cool, precipitator dust, plasma reactor taste removal, ozone purification carbon monoxide, nitrogen oxides, Hydrocarbon and adsorbent remove ammonia nitrogen and sulfide, system has processed slurry-spraying pelletizing tail gas；Ozonator produces ozone, in order to remove the gas phase organic substance that can not remove in tail gas, such as ketone, aldehydes, esters, benzene class etc. with spray and electrostatic means so that it is fully oxidized, decomposition, generates harmless carbon dioxide and water；Adsorbent of the present invention is for removing the pollutant such as the ammonia nitrogen that can not react completely and sulfide；
Performance of the adsorbent of the present invention is high, and adsorption capacity is good, stable performance；By adding cationic starch, meerschaum, montmorillonite, calcium fluoride and alumine are carried out surface modification modification so that powder body, with electric charge, improves the absorbability to dust, additionally it is possible to make product have certain electrostatic adsorption；The present invention by having carried out surface oxidation treatment to activated carbon, thus improves the content of surface oxygen-containing acid group, strengthens the polarity on surface, is more easy to adsorb polar substances；Modified activated carbon contains substantial amounts of micropore, has strong adsorption function, and it has been carried out modification, makes it be greatly increased with the contact area of other materials, gas etc. is possessed good adsorption；The present invention, by soaking the techniques such as roasting, adds the aperture number of adsorbent, improves surface roughness and specific surface area, enhances absorbability: different material of the present invention uses different particle diameters, increases the specific surface area of adsorbent；Adsorbent prepared by the present invention, compatibility is reasonable, and each raw material is the most collaborative, it is possible to reach preferably dust-removal and desulfurizing denitration effect；Invention also uses agricultural waste material as raw material, provide cost savings, improve the added value of industry of enterprise.
Detailed description of the invention
For the technical scheme making those skilled in the art be more fully understood that in the application, below in conjunction with the application specific embodiment, the present invention is more clearly and completely described, it is clear that, described embodiment is only some embodiments of the present application rather than whole embodiments.Based on the embodiment in the application, the every other embodiment that those of ordinary skill in the art are obtained under not making creative work premise, all should 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,
First slurry-spraying pelletizing tail gas through venturi spray column and electrostatic precipitator cooling dedusting, then by plasma reactor taste removal, then by ozonator, finally enter equipped with carrying out desulphurization denitration process in the fixed bed reactors of adsorbent, after being disposed, discharge；
Described adsorbent is prepared according to following technique
Meerschaum and montmorillonite are mixed by step 1), are then added in disintegrating machine crush, then mix with calcium fluoride, alumine, then are ground, and obtaining particle diameter is 100 target minreal matter powder；Wherein, the mass ratio of meerschaum, montmorillonite, calcium fluoride and alumine is 7:5:5:2；
Step 2) broomcorn straw and Pericarppium arachidis hypogaeae are put into pulverizing in pulverizer according to the mass ratio of 1:1, then cross 100 mesh sieves and obtain agricultural wastes powder, transfer in agitator tank, then in agitator tank, add cationic starch and deionized water, it is uniformly mixing to obtain suspension, being subsequently adding step 1) gained mineral powder, 500 turns/min stirs 10min, then stands 12 hours, precipitation is collected by filtration, precipitation is placed in 80 DEG C of drying, finally pulverizes the granule obtaining 50 mesh, be component A；Wherein, the mass ratio of agricultural wastes powder, cationic starch, step 1) gained mineral powder and deionized water is 7:2:10:25；
Step 3) weighs the activated carbon of 50 mesh and is placed in container, and then the dilute nitric acid solution that volume fraction is 10% of the quality such as interpolation, soaks 6 hours, then take out activated carbon, and washing obtains modified activated carbon；
Step 3) gained modified activated carbon, nano diatomite and deionized water are added sequentially in agitator tank by step 4), heat while stirring, to be heated to 100 DEG C time, maintain 100 DEG C continue stirring transpiring moistures, until moisture at 5%(w/w) time, stop heating, naturally cool to room temperature, then roasting 3 hours at 500 DEG C, take out, it is ground into the granule of 20 mesh, is component B；Wherein, the mass ratio of step 3) gained modified activated carbon, nano diatomite and deionized water is 10:3:20；
Component A and component B are mixed by step 5) according to the mass ratio of 5:8, stir, to obtain final product.
Embodiment 2
A kind of processing method of slurry-spraying pelletizing tail gas cooling and deodorizing desulphurization denitration,
First slurry-spraying pelletizing tail gas through venturi spray column and electrostatic precipitator cooling dedusting, then by plasma reactor taste removal, then by ozonator, finally enter equipped with carrying out desulphurization denitration process in the reactor of adsorbent, after being disposed, discharge；
Described adsorbent is prepared according to following technique
Meerschaum and montmorillonite are mixed by step 1), are then added in disintegrating machine crush, then mix with calcium fluoride, alumine, then are ground, and obtaining particle diameter is 100 target minreal matter powder；Wherein, the mass ratio of meerschaum, montmorillonite, calcium fluoride and alumine is 12:9:9:4；
Step 2) broomcorn straw and Pericarppium arachidis hypogaeae are put into pulverizing in pulverizer according to the mass ratio of 1:1, then cross 100 mesh sieves and obtain agricultural wastes powder, transfer in agitator tank, then in agitator tank, add cationic starch and deionized water, it is uniformly mixing to obtain suspension, being subsequently adding step 1) gained mineral powder, 500 turns/min stirs 10min, then stands 12 hours, precipitation is collected by filtration, precipitation is placed in 80 DEG C of drying, finally pulverizes the granule obtaining 50 mesh, be component A；Wherein, the mass ratio of agricultural wastes powder, cationic starch, step 1) gained mineral powder and deionized water is 9:3:15:35；
Step 3) weighs the activated carbon of 50 mesh and is placed in container, and then the dilute nitric acid solution that volume fraction is 10% of the quality such as interpolation, soaks 6 hours, then take out activated carbon, and washing obtains modified activated carbon；
Step 3) gained modified activated carbon, nano diatomite and deionized water are added sequentially in agitator tank by step 4), heat while stirring, to be heated to 100 DEG C time, maintain 100 DEG C continue stirring transpiring moistures, until moisture at 5%(w/w) time, stop heating, naturally cool to room temperature, then roasting 3 hours at 500 DEG C, take out, it is ground into the granule of 20 mesh, is component B；Wherein, the mass ratio of step 3) gained modified activated carbon, nano diatomite and deionized water is 20:5:30；
Component A and component B are mixed by step 5) according to the mass ratio of 9:14, stir, to obtain final product.
Embodiment 3
In tail gas after ozone reactor process, major pollutants are as follows: SO2For 179mg/Nm3, NOx is 83mg/Nm3, dust (＜ 2.5 μm) is 27mg/Nm3, air speed is 5000h-1, adsorbent prepared by embodiment 1 is routed in fixed bed reactors simultaneously, sets time of the out of stock dedusting of desulfurization as 30min, measure the out of stock dust removal efficiency of desulfurization, be 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 these descriptions are all exemplary, is not limiting the scope of the invention.The present invention can be made various variants and modifications according to spirit and principles of the present invention by those skilled in the art, and these variants and modifications are also within the scope of the invention.

Claims (5)

1. a processing method for slurry-spraying pelletizing tail gas cooling and deodorizing desulphurization denitration, it comprises the steps:
First slurry-spraying pelletizing tail gas through venturi spray column and electrostatic precipitator cooling dedusting, then by plasma reactor taste removal, then by ozonator, finally enter equipped with carrying out desulphurization denitration process in the reactor of adsorbent, after being disposed, discharge.
Method the most according to claim 1, it is characterised in that described adsorbent is prepared according to following technique:
Meerschaum and montmorillonite are mixed by step 1), are then added in disintegrating machine crush, then mix with calcium fluoride, alumine, are then ground, and obtaining particle diameter is 100 target minreal matter powder；
Step 2) broomcorn straw and Pericarppium arachidis hypogaeae are put into pulverizing in pulverizer according to the mass ratio of 1:1, obtain agricultural wastes powder after 100 mesh sieves, transfer in agitator tank, then in agitator tank, add cationic starch and deionized water, it is uniformly mixing to obtain suspension, adding step 1) gained mineral powder, 500 turns/min stirs 10min, then stands 12 hours, precipitation is collected by filtration, precipitation is placed in 80 DEG C of drying, finally pulverizes the granule obtaining 50 mesh, be component A；
Step 3) weighs the activated carbon of 50 mesh and is placed in container, then the dilute nitric acid solution that volume fraction is 10% of the quality such as interpolation, soaks 6 hours, then takes out activated carbon, and washing obtains modified activated carbon；
Step 3) gained modified activated carbon, nano diatomite and deionized water are added sequentially in agitator tank by step 4), heat while stirring, to be heated to 100 DEG C time, maintain 100 DEG C continue stirring transpiring moistures, until moisture at 5%(w/w) time, stop heating, naturally cool to room temperature, then roasting 3 hours at 500 DEG C, take out, it is ground into the granule of 20 mesh, is component B；
Component A and component B are mixed by step 5) according to the mass ratio of 5-9:8-14, stir, to obtain final product.
Method the most according to claim 2, it is characterised in that in described step 1), the mass ratio of meerschaum, montmorillonite, calcium fluoride and alumine is 7-12:5-9:5-9:2-4.
Method the most according to claim 2, it is characterised in that described step 2) in, the mass ratio of agricultural wastes powder, cationic starch, step 1) gained mineral powder and deionized water is 7-9:2-3:10-15:25-35.
Method the most according to claim 2, it is characterised in that in described step 4), the mass ratio of step 3) 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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Cited By (1)

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Publication number Priority date Publication date Assignee Title
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JP2008202071A (en) * 2007-02-19 2008-09-04 Nippon Steel Engineering Co Ltd Method for operating blast furnace gas cleaning facility
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
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108636085A (en) * 2018-04-24 2018-10-12 北京宜泽环保科技有限责任公司 A kind of high-pressure discharging device and exhaust treatment system

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