CN106000073B - A kind of environment-protective process for administering boiler smoke - Google Patents

A kind of environment-protective process for administering boiler smoke Download PDF

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Publication number
CN106000073B
CN106000073B CN201610501234.3A CN201610501234A CN106000073B CN 106000073 B CN106000073 B CN 106000073B CN 201610501234 A CN201610501234 A CN 201610501234A CN 106000073 B CN106000073 B CN 106000073B
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adsorbent
mesh
water
prepare
boiler smoke
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CN106000073A (en
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张传森
丁兆堂
季新利
卢松
王文强
高雷
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INNER MONGLIA FUFENG BIOLOGICAL TECHNOLOGY Co Ltd
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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
    • B01D53/50—Sulfur oxides
    • B01D53/508—Sulfur oxides by treating the gases with solids
    • 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
    • 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
    • B01J20/06—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising oxides or hydroxides of metals not provided for in group B01J20/04
    • B01J20/08—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising oxides or hydroxides of metals not provided for in group B01J20/04 comprising aluminium oxide or hydroxide; comprising bauxite
    • 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
    • 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
    • B01J20/103—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising silica or silicate comprising silica
    • 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
    • B01D—SEPARATION
    • B01D2257/00—Components to be removed
    • B01D2257/40—Nitrogen compounds
    • B01D2257/404—Nitrogen oxides other than dinitrogen oxide

Abstract

The invention belongs to fume treatment technical fields, disclose a kind of environment-protective process for administering boiler smoke comprising following steps：Boiler smoke is subjected to spray cooling first so that the temperature of flue gas controls within 100 DEG C, then passes through deduster and removes large dust particle, subsequently into desulphurization denitration dust removal process is carried out in the reactor equipped with adsorbent, after being disposed, is discharged.The present invention carries out desulphurization denitration dust removal process using water spray, deduster and adsorbent to flue gas, and effect is good, environment friendly and pollution-free.

Description

A kind of environment-protective process for administering boiler smoke
Technical field
The invention belongs to fume treatment technical fields, and in particular to a kind of environment-protective process for administering boiler smoke.
Background technology
Boiler smoke is the mixture of gas and flue dust, is the main reason for polluting residential block air.The ingredient of flue gas is very Complexity, gas include water vapour, sulfur dioxide, hydrocarbon and oxynitrides etc., flue dust include fuel ash content, Coal grain, oil droplet and high-temperature split product etc..Therefore flue gas is the combined pollution of a variety of poisonous substances to the pollution of environment.Flue dust is to people The harmfulness of body is related with the size of particle, and it is that diameter is less than 10 microns of floating dust to generate the mostly of harm to human body, especially with 1-2.5 microns of floating dust harmfulness is maximum.
China is an Industrial Boiler production and uses big country.But China's coal-burned industrial boiler situation makes people worried, About 10,000,000 tons of the coal fire discharged sulfur dioxide of Industrial Boiler in 2010, about 2,000,000 tons of oxynitrides, dust about 1,000,000 Ton, about 90,000,000 tons of waste residue is the second largest coal-smoke pollution source that China is only second to coal fired power generation；Wherein sulfur dioxide is dense Degree can reach every cubic metre of 50-200ug, and especially northerly Heavy industrial city pollution is even more serious.Currently, enterprise is to coal-fired dirty The control of dye object is concentrated mainly on dedusting, desulfurization and denitration.Flue gas desulfurization refers to and removes desulfuration from flue gas or other industrial waste gases Oxide, denitration refer to the process of that denitrification is removed from combustion product gases.
According to above-mentioned technical problem, the patent application " a kind of desulfurizing and denitrifying process of boiler smoke " before applicant is led to It crosses desulphurization denitration preparation and microbial technique is combined, effectively purified flue gas, but used by the patented technology compound micro- Bacteria agent, strain culturing technology is relative complex, it is difficult to be promoted the use of in medium-sized and small enterprises.
Invention content
For overcome the deficiencies in the prior art, the present invention provides a kind of environment-protective process for administering boiler smoke, the techniques Adsorbent has been used, the function of desulphurization denitration dedusting is had both, adsorption efficiency is high, and preparation process is simple.
The present invention is realized by following scheme：
A kind of environment-protective process for administering boiler smoke comprising following steps：
Boiler smoke is subjected to spray cooling first so that the temperature of flue gas controls within 100 DEG C, then passes through dedusting Device removes large dust particle, subsequently into progress desulphurization denitration dust removal process in the reactor equipped with adsorbent, after being disposed, Discharge；
The adsorbent is prepared according to following technique：
Step 1）Prepare material A：Sepiolite is added in crusher and is crushed, then with flyash, calcirm-fluoride, height Bauxite mixes, then is ground, and it is 100 mesh powders, as material A to obtain grain size；Wherein, sepiolite, flyash, fluorination The mass ratio of calcium and alumine is 7-12:5-8:4-7:2-3；
Step 2）Prepare material B：Broomcorn straw is put into pulverizer and is crushed, then sieves with 100 mesh sieve to obtain sorghum stalks Stalk powder, is transferred in agitator tank, and cationic starch and water are then added into agitator tank, is uniformly mixing to obtain suspension, then Step 1 is added）Material A, 500 turns/min stirs 10min, then stands 12 hours, precipitation is collected by filtration, precipitation is placed in 80 DEG C Drying finally crushes and obtains the particle of 50 mesh, as material B；Wherein, broomcorn straw powder, cationic starch, material A and water Mass ratio be 10-15:4-7:5-10:30-50；
Step 3）Prepare material C：The activated carbon for weighing 50 mesh is placed in container, then add volume fraction be 20% it is dilute Salpeter solution is advisable with not crossing, and is impregnated 6 hours, is then taken out activated carbon, is washed, is obtained material C；
Step 4）Prepare material D：By step 3）Material C, nano diatomite, nano-titanium dioxide, nano zine oxide with And water is added sequentially in agitator tank, is heated while stirring, it is to be heated to 100 DEG C when, maintain 100 DEG C continue stirring evaporation water Point, wait for moisture 5%（w/w）When, stopping heating, then cooled to room temperature roasts 3 hours at 500 DEG C, take out, It is ground into the particle of 20 mesh, as material D；Wherein, step 3）Resulting material C, nano diatomite, nano-titanium dioxide, nanometer The mass ratio of zinc oxide and water is 10:2:2:1:20；
Step 5）Prepare adsorbent：By material B and material D according to 1-2:The mass ratio of 3-7 mixes, stir evenly to get.
The advantageous effect that the present invention obtains includes mainly：
The present invention carries out desulphurization denitration dust removal process using water spray, deduster and adsorbent to flue gas, and effect is good, ring It protects pollution-free；Water spray suitably reduces flue-gas temperature, removes bulky grain flue dust jointly with deduster, and micro in flue dust Calcium oxide can be reacted with sulfur dioxide in a wetted condition；Adsorbent of the present invention by add cationic starch to sepiolite, Calcirm-fluoride and alumine carry out surface modifying and decorating so that powder carries charge, improves the adsorption capacity to dust, also Enable to product that there is certain electrostatic adsorption；The present invention by having carried out surface oxidation treatment to activated carbon, To improve the content of surface oxygen-containing acid group, enhance the polarity on surface, is more easy to absorption polar substances；Modified activated carbon contains A large amount of micropore has strong adsorption function, is modified to it, the contact area of it and other substances is made to greatly increase, Has good suction-operated to gas etc.；The present invention increases the aperture number of adsorbent, carries by impregnating the techniques such as roasting High surface roughness and specific surface area, enhance adsorption capacity：Different material of the present invention uses different grain sizes, increases The specific surface area of adsorbent；Adsorbent prepared by the present invention, compatibility is reasonable, and each raw material mutually cooperates with, and can reach and preferably remove Dirt desulfurization off sulfide effect；Invention also uses agricultural waste materials as raw material, saves cost, improves the industry of enterprise Added value.
Specific implementation mode
In order to make those skilled in the art better understand the technical solutions in the application, having below in conjunction with the application Body embodiment more clearly and completely describes the present invention, it is clear that described embodiment is only the application one Divide embodiment, instead of all the 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 environment-protective process for administering boiler smoke comprising following steps：
Boiler smoke is subjected to spray cooling first so that the temperature of flue gas controls within 100 DEG C, then passes through dedusting Device removes large dust particle, subsequently into progress desulphurization denitration dust removal process in the reactor equipped with adsorbent, after being disposed, Discharge；
The adsorbent is prepared according to following technique：
Step 1）Prepare material A：Sepiolite is added in crusher and is crushed, then with flyash, calcirm-fluoride, height Bauxite mixes, then is ground, and it is 100 mesh powders, as material A to obtain grain size；Wherein, sepiolite, flyash, fluorination The mass ratio of calcium and alumine is 7:5:4:2；
Step 2）Prepare material B：Broomcorn straw is put into pulverizer and is crushed, then sieves with 100 mesh sieve to obtain sorghum stalks Stalk powder, is transferred in agitator tank, and cationic starch and water are then added into agitator tank, is uniformly mixing to obtain suspension, then Step 1 is added）Material A, 500 turns/min stirs 10min, then stands 12 hours, precipitation is collected by filtration, precipitation is placed in 80 DEG C Drying finally crushes and obtains the particle of 50 mesh, as material B；Wherein, broomcorn straw powder, cationic starch, material A and water Mass ratio be 10:4:5:30；
Step 3）Prepare material C：The activated carbon for weighing 50 mesh is placed in container, then add volume fraction be 20% it is dilute Salpeter solution is advisable with not crossing, and is impregnated 6 hours, is then taken out activated carbon, is washed, is obtained material C；
Step 4）Prepare material D：By step 3）Material C, nano diatomite, nano-titanium dioxide, nano zine oxide with And water is added sequentially in agitator tank, is heated while stirring, it is to be heated to 100 DEG C when, maintain 100 DEG C continue stirring evaporation water Point, wait for moisture 5%（w/w）When, stopping heating, then cooled to room temperature roasts 3 hours at 500 DEG C, take out, It is ground into the particle of 20 mesh, as material D；Wherein, step 3）Resulting material C, nano diatomite, nano-titanium dioxide, nanometer The mass ratio of zinc oxide and water is 10:2:2:1:20；
Step 5）Prepare adsorbent：By material B and material D according to 1:3 mass ratio mixing, stir evenly to get.
Embodiment 2
A kind of environment-protective process for administering boiler smoke comprising following steps：
Boiler smoke is subjected to spray cooling first so that the temperature of flue gas controls within 100 DEG C, then passes through dedusting Device removes large dust particle, subsequently into progress desulphurization denitration dust removal process in the reactor equipped with adsorbent, after being disposed, Discharge；
The adsorbent is prepared according to following technique：
Step 1）Prepare material A：Sepiolite is added in crusher and is crushed, then with flyash, calcirm-fluoride, height Bauxite mixes, then is ground, and it is 100 mesh powders, as material A to obtain grain size；Wherein, sepiolite, flyash, fluorination The mass ratio of calcium and alumine is 12:8:7:3；
Step 2）Prepare material B：Broomcorn straw is put into pulverizer and is crushed, then sieves with 100 mesh sieve to obtain sorghum stalks Stalk powder, is transferred in agitator tank, and cationic starch and water are then added into agitator tank, is uniformly mixing to obtain suspension, then Step 1 is added）Material A, 500 turns/min stirs 10min, then stands 12 hours, precipitation is collected by filtration, precipitation is placed in 80 DEG C Drying finally crushes and obtains the particle of 50 mesh, as material B；Wherein, broomcorn straw powder, cationic starch, material A and water Mass ratio be 15:7:10:50；
Step 3）Prepare material C：The activated carbon for weighing 50 mesh is placed in container, then add volume fraction be 20% it is dilute Salpeter solution is advisable with not crossing, and is impregnated 6 hours, is then taken out activated carbon, is washed, is obtained material C；
Step 4）Prepare material D：By step 3）Material C, nano diatomite, nano-titanium dioxide, nano zine oxide with And water is added sequentially in agitator tank, is heated while stirring, it is to be heated to 100 DEG C when, maintain 100 DEG C continue stirring evaporation water Point, wait for moisture 5%（w/w）When, stopping heating, then cooled to room temperature roasts 3 hours at 500 DEG C, take out, It is ground into the particle of 20 mesh, as material D；Wherein, step 3）Resulting material C, nano diatomite, nano-titanium dioxide, nanometer The mass ratio of zinc oxide and water is 10:2:2:1:20；
Step 5）Prepare adsorbent：By material B and material D according to 2:7 mass ratio mixing, stir evenly to get.
By taking embodiment 2 as an example, desulphurization denitration dust removing effects are had detected：The boiler tail in the abundant rich amino acids production workshop of selection Gas, reciprocal of duty cycle 4000h-1, wherein NOx concentration 512mg/Nm3, SO2A concentration of 1123mg/ Nm3, a concentration of 157mg/ of flue dust Nm3, after treatment, NOx concentration is down to 25mg/Nm3, SO2Concentration be reduced to 57mg/ Nm3, the concentration of flue dust is reduced to 8mg/ Nm3。
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, and 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 environment-protective process for administering boiler smoke comprising following steps：
Boiler smoke is subjected to spray cooling first so that the temperature of flue gas controls within 100 DEG C, is then gone by deduster Except large dust particle after being disposed, is arranged subsequently into desulphurization denitration dust removal process is carried out in the reactor equipped with adsorbent Go out；
The adsorbent is prepared according to following technique：
Step 1）Prepare material A：Sepiolite is added in crusher and is crushed, then with flyash, calcirm-fluoride, high alumina alum Soil mixing, then be ground, it is 100 mesh powders, as material A to obtain grain size；Wherein, sepiolite, flyash, calcirm-fluoride with And the mass ratio of alumine is 7-12:5-8:4-7:2-3；
Step 2）Prepare material B：Broomcorn straw is put into pulverizer and is crushed, then sieves with 100 mesh sieve to obtain broomcorn straw powder, It is transferred in agitator tank, cationic starch and water is then added into agitator tank, is uniformly mixing to obtain suspension, step is then added Rapid 1）Material A, 500 turns/min stirs 10min, then stands 12 hours, precipitation is collected by filtration, precipitation is placed in 80 DEG C of drying, It finally crushes and obtains the particle of 50 mesh, as material B；Wherein, the quality of broomcorn straw powder, cationic starch, material A and water Than for 10-15:4-7:5-10:30-50；
Step 3）Prepare material C：The activated carbon for weighing 50 mesh is placed in container, then adds the dust technology that volume fraction is 20% Solution is advisable with not crossing, and is impregnated 6 hours, is then taken out activated carbon, is washed, is obtained material C；
Step 4）Prepare material D：By step 3）Material C, nano diatomite, nano-titanium dioxide, nano zine oxide and water Be added sequentially in agitator tank, heat while stirring, it is to be heated to 100 DEG C when, maintain 100 DEG C continue stir evaporable water, wait for For moisture at 5%, the moisture is mass content, stops heating, then cooled to room temperature roasts at 500 DEG C It burns 3 hours, takes out, be ground into the particle of 20 mesh, as material D；Wherein, step 3）Resulting material C, nano diatomite, nanometer The mass ratio of titanium dioxide, nano zine oxide and water is 10:2:2:1:20；
Step 5）Prepare adsorbent：By material B and material D according to 1-2:The mass ratio of 3-7 mixes, stir evenly to get.
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CN107866111A (en) * 2016-11-22 2018-04-03 山东鑫海科技股份有限公司 A kind of lateritic nickel ore nickel-iron smelting flue gas treating process
CN108085266B (en) * 2016-11-22 2021-05-07 山东鑫海科技股份有限公司 Laterite-nickel ore ferronickel smelting flue gas desulfurization and denitrification biological agent and application thereof
CN110496598A (en) * 2019-07-04 2019-11-26 宁夏宝塔化工中心实验室(有限公司) A kind of adsorbent and its application method for being handled containing tar flue gas
CN110918069A (en) * 2019-12-13 2020-03-27 西安润川环保科技有限公司 Flue gas adsorbent and preparation method thereof

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JPH03101812A (en) * 1987-12-09 1991-04-26 Yoshio Kobayashi Method for dry-purifying waste gas
CN101816886B (en) * 2010-04-29 2012-01-25 昆明理工大学 Method for simultaneously desulfurating, denitrating and decarbonizing coal-fired flue gas
CN102266714B (en) * 2011-06-29 2013-07-03 天津大学 Method for desorbing acidic gas by oxidization process
CN104383809B (en) * 2014-10-27 2016-05-25 内蒙古阜丰生物科技有限公司 A kind of desulfurizing and denitrifying process of boiler smoke
CN105396421A (en) * 2015-10-23 2016-03-16 河北金科环保设备有限公司 Comprehensive adsorption and desulphurization dedusting purification method of baking flue gas
CN105195008A (en) * 2015-10-23 2015-12-30 河北金科环保设备有限公司 Process and equipment for flue gas roasting, adsorption desulfurization, dust removal and purification by adopting combination process

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