CN105771636A - Preparation method of smoke desulphurizing powder - Google Patents

Preparation method of smoke desulphurizing powder Download PDF

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CN105771636A
CN105771636A CN201610252905.7A CN201610252905A CN105771636A CN 105771636 A CN105771636 A CN 105771636A CN 201610252905 A CN201610252905 A CN 201610252905A CN 105771636 A CN105771636 A CN 105771636A
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powder
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CN105771636B (en
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王莉萍
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Beijing Qingxin Environmental Engineering Technology Co ltd
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Hangzhou Fuyang Gaobo Information Technology Service Co Ltd
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    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/46—Removing components of defined structure
    • B01D53/48—Sulfur compounds
    • B01D53/50—Sulfur oxides
    • 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
    • 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
    • B01D53/86—Catalytic processes
    • B01D53/8603—Removing sulfur compounds
    • B01D53/8609—Sulfur oxides
    • 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
    • B01J20/043—Carbonates or bicarbonates, e.g. limestone, dolomite, aragonite
    • 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
    • B01J20/22—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising organic material
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    • B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
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    • B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
    • B01J23/02—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the alkali- or alkaline earth metals or beryllium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
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    • B01D2253/106—Silica or silicates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2258/00—Sources of waste gases
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    • B01D2258/0283—Flue gases
    • 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 environment friendliness, and discloses a preparation method of smoke desulphurizing powder. The preparation method comprises the following steps: 1) stirring and heating; 2) smashing, ball grinding and soaking; 3) grinding and mixing; 4) calcining; 5) mixing and stirring. The preparation method of the smoke desulphurizing powder is simple and suitable for industrial production.

Description

A kind of preparation method of flue gas desulfurization powder
Technical field
The invention belongs to environmental technology field, the preparation method disclosing a kind of flue gas desulfurization powder.
Background technology
In recent years, industrial revolution fast development, and environmental technology field lags far behind.China is that an Industrial Boiler produces and uses big country, and coal-burned industrial boiler situation makes people worried, Industrial Boiler coal-fired flue-gas discharge sulfur dioxide about 10,000,000 tons in 2010.Development clean combustion technique is the strategical decision that China solves the atmosphere polluting problem that the pollution of primary energy combustion product gases is master, is the important technology direction realizing sustainable development economic, social and economy, energy environment coordinated development；The core of clean combustion technique is the burning of primary energy high cleaning, and wherein the solid sulfur of primary energy desulfurization is the reduction of discharging SO of an applicable China's national situation2One of technical measures.
Under such national conditions, study Novel desulphurization powder, will have extremely strong vitality, it is possible to the flue gas desulfurization in fields such as metallurgy, generating, cement, Industrial Boilers uses, and has popularity, advance and universality.At present, have more company take up research can the preparation of simultaneous SO_2 and NO removal, also have some launch to sell；It is of a relatively high to there is cost in most desulfurization preparation, and adsorbance is less, and stability is not high, there is certain defect when large-scale application.In recent years, when environmental problem and energy crisis are day by day serious, progressively goal in research is transferred to exploitation relatively inexpensive, effective new material both at home and abroad to prepare desulfurization preparation, such as different kind organism material and mineral material.
Summary of the invention
Summary of the invention
In order to overcome the deficiencies in the prior art, the preparation method that the invention provides a kind of flue gas desulfurization powder, the method simple possible, the desulfurization powder desulfurized effect of preparation is good, capacity is high, can be applicable to various flue gas desulfurization.
The present invention is realized by following scheme:
The preparation method of a kind of flue gas desulfurization powder, it comprises the steps:
Step 1) stirring and heating, step 2) pulverize, ball milling and immersion, step 3) is ground and mixing, and step 4) is calcined, step 5) mix and blend；
Specifically, comprise the steps:
Step 1) stirring and heating: adding in mixing agitator by calcium oxide, activated carbon, calcium fluoride and dicalcium silicate, 500 turns/min stirs 6min, sprays Oleum Glycines while stirring, after stirring, heating, to 80 DEG C, is incubated 3min, obtains compound A；Wherein, the mass ratio of activated carbon, calcium oxide, calcium fluoride, dicalcium silicate and Oleum Glycines is 15:10:3:3:1；
Step 2) pulverize, ball milling and immersion: by monticellite, mullite and shepardite respectively by crusher in crushing, then mix, put into again in vibrator, particle diameter to be milled to is 100-200um, stop ball milling, discharging, soak 6 hours with the sodium hydrate aqueous solution that concentration is 1M subsequently, last 50 DEG C of drying, obtain compound B；Wherein, the mass ratio of monticellite, mullite, shepardite and sodium hydrate aqueous solution is 3:2:2:5；
Step 3) is ground and mixing: is pulverized by soybean stalk pulverizer, is then ground to the powder of 300-500um, finally mixes with nano silicon, obtain compound C；Wherein, the mass ratio of soybean stalk and nano silicon is 5:1；
Step 4) is calcined: dolomite and kieselguhr are mixed according to the mass ratio of 2:1, is subsequently placed in calcining furnace and calcines 2h, and calcining heat is 1000 DEG C, takes out, and is cooled to room temperature, pulverizes and obtains compound D；
Step 5) mix and blend: by compound A, compound B, compound C and compound D according to the quality of 15-25:10-15:4-7:2-3 than mixing and stirring, to obtain final product.
Preferably, the particle diameter of nano silicon is 200-500nm.
The beneficial effect that the present invention obtains mainly includes the following aspects:
The preparation method of flue gas desulfurization powder of the present invention is simple, is suitable for industrialized production, and low raw-material cost, the powder of preparation is environment friendly and pollution-free, can be widely applied to all kinds of flue gas desulfurization.
Powder material combination prepared by the present invention is reasonable, and desulfurized effect is good, and sulfur capacity is high, shortens the vulcanization reaction time.
The raw material of the present invention many employings wide material sources and agricultural wastes so that garbage becomes the new energy, solve environmental protection of enterprise pressure, it is achieved that turn waste into wealth.
The present invention adopts dolime and diatomaceous technique, adds adsorption effect, plays good catalytic action.
Present invention employs discarded soybean stalk, particle diameter is big, forms certain pore structure, improves adsorption effect.
The present invention is by spraying Oleum Glycines and heating so that powder surface forms protecting film, improves holding time and the desulfuration efficiency of powder.
The present invention, by adding nanometer particle, improves dispersion effect, expands adsorbent capacity.
Detailed description of the invention
In order to make those skilled in the art be more fully understood that the technical scheme in the application, below in conjunction with the application specific embodiment, the present invention is carried out clearly, is fully described by, 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 obtain under not making creative work premise, all should belong to the scope of protection of the invention.
Embodiment 1
The preparation method of a kind of flue gas desulfurization powder, it comprises the steps:
Step 1) stirring and heating, step 2) pulverize, ball milling and immersion, step 3) is ground and mixing, and step 4) is calcined, step 5) mix and blend；
Specifically, comprise the steps:
Step 1) stirring and heating: adding in mixing agitator by calcium oxide, activated carbon, calcium fluoride and dicalcium silicate, 500 turns/min stirs 6min, sprays Oleum Glycines while stirring, after stirring, heating, to 80 DEG C, is incubated 3min, obtains compound A；Wherein, the mass ratio of activated carbon, calcium oxide, calcium fluoride, dicalcium silicate and Oleum Glycines is 15:10:3:3:1；
Step 2) pulverize, ball milling and immersion: by monticellite, mullite and shepardite respectively by crusher in crushing, then mix, put into again in vibrator, particle diameter to be milled to is 100um, stop ball milling, discharging, soak 6 hours with the sodium hydrate aqueous solution that concentration is 1M subsequently, last 50 DEG C of drying, obtain compound B；Wherein, the mass ratio of monticellite, mullite, shepardite and sodium hydrate aqueous solution is 3:2:2:5；
Step 3) is ground and mixing: is pulverized by soybean stalk pulverizer, is then ground to the powder of 300um, finally mixes with nano silicon, obtain compound C；Wherein, the mass ratio of soybean stalk and nano silicon is 5:1；
Step 4) is calcined: dolomite and kieselguhr are mixed according to the mass ratio of 2:1, is subsequently placed in calcining furnace and calcines 2h, and calcining heat is 1000 DEG C, takes out, and is cooled to room temperature, pulverizes and obtains compound D；
Step 5) mix and blend: by compound A, compound B, compound C and compound D according to the quality of 15:10:4:2 than mixing and stirring, to obtain final product.
Wherein, the particle diameter of nano silicon is 200nm.
Embodiment 2
The preparation method of a kind of flue gas desulfurization powder, it comprises the steps:
Step 1) stirring and heating, step 2) pulverize, ball milling and immersion, step 3) is ground and mixing, and step 4) is calcined, step 5) mix and blend；
Specifically, comprise the steps:
Step 1) stirring and heating: adding in mixing agitator by calcium oxide, activated carbon, calcium fluoride and dicalcium silicate, 500 turns/min stirs 6min, sprays Oleum Glycines while stirring, after stirring, heating, to 80 DEG C, is incubated 3min, obtains compound A；Wherein, the mass ratio of activated carbon, calcium oxide, calcium fluoride, dicalcium silicate and Oleum Glycines is 15:10:3:3:1；
Step 2) pulverize, ball milling and immersion: by monticellite, mullite and shepardite respectively by crusher in crushing, then mix, put into again in vibrator, particle diameter to be milled to is 200um, stop ball milling, discharging, soak 6 hours with the sodium hydrate aqueous solution that concentration is 1M subsequently, last 50 DEG C of drying, obtain compound B；Wherein, the mass ratio of monticellite, mullite, shepardite and sodium hydrate aqueous solution is 3:2:2:5；
Step 3) is ground and mixing: is pulverized by soybean stalk pulverizer, is then ground to the powder of 500um, finally mixes with nano silicon, obtain compound C；Wherein, the mass ratio of soybean stalk and nano silicon is 5:1；
Step 4) is calcined: dolomite and kieselguhr are mixed according to the mass ratio of 2:1, is subsequently placed in calcining furnace and calcines 2h, and calcining heat is 1000 DEG C, takes out, and is cooled to room temperature, pulverizes and obtains compound D；
Step 5) mix and blend: by compound A, compound B, compound C and compound D according to the quality of 25:15:7:3 than mixing and stirring, to obtain final product.
Wherein, the particle diameter of nano silicon is 500nm.
Embodiment 3
The simulation flue gas containing sulfur dioxide, enters the desulphurization reaction room of desulfurization powder containing embodiment 2 preparation, and velocity of flue gas is 0.5m/min, and flue-gas temperature is 100 DEG C, sets respectively desulfurization time as 10,20,30,60min, mensuration desulfurization degree, be specifically shown in table 1:
Table 1
Desulfurization time min Inlet concentration mg/m3 Exit concentration mg/m3 Desulfurization degree %
10 748.5 189.3 74.71
20 761.3 167.6 77.99
30 759.1 133.5 82.41
60 753.8 129.6 82.81
Conclusion: inventive desulfurization powder desulfurization rate can reach more than 80%；After reaction terminates, have detected the desulfurization powder work 30min adsorbance to sulfur dioxide: every gram of adsorbable sulfur dioxide 58.7mg of adsorbent, adsorption capacity is good, and the response time is short.
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 illustrative of, is not limiting the scope of the invention.The present invention can be made various variants and modifications according to the spirit of the present invention and principle by those skilled in the art, and these variants and modifications are also within the scope of the invention.

Claims (3)

1. the preparation method of a flue gas desulfurization powder, it is characterised in that described preparation method comprises the steps:
Step 1) stirring and heating, step 2) pulverize, ball milling and immersion, step 3) is ground and mixing, and step 4) is calcined, step 5) mix and blend.
2. preparation method according to claim 1, it is characterised in that described preparation method comprises the steps:
Step 1) stirring and heating: adding in mixing agitator by calcium oxide, activated carbon, calcium fluoride and dicalcium silicate, 500 turns/min stirs 6min, sprays Oleum Glycines while stirring, after stirring, heating, to 80 DEG C, is incubated 3min, obtains compound A；Wherein, the mass ratio of activated carbon, calcium oxide, calcium fluoride, dicalcium silicate and Oleum Glycines is 15:10:3:3:1；
Step 2) pulverize, ball milling and immersion: by monticellite, mullite and shepardite respectively by crusher in crushing, then mix, put into again in vibrator, particle diameter to be milled to is 100-200um, stop ball milling, discharging, soak 6 hours with the sodium hydrate aqueous solution that concentration is 1M subsequently, last 50 DEG C of drying, obtain compound B；Wherein, the mass ratio of monticellite, mullite, shepardite and sodium hydrate aqueous solution is 3:2:2:5；
Step 3) is ground and mixing: is pulverized by soybean stalk pulverizer, is then ground to the powder of 300-500um, finally mixes with nano silicon, obtain compound C；Wherein, the mass ratio of soybean stalk and nano silicon is 5:1；
Step 4) is calcined: dolomite and kieselguhr are mixed according to the mass ratio of 2:1, is subsequently placed in calcining furnace and calcines 2h, and calcining heat is 1000 DEG C, takes out, and is cooled to room temperature, pulverizes and obtains compound D；
Step 5) mix and blend: by compound A, compound B, compound C and compound D according to the quality of 15-25:10-15:4-7:2-3 than mixing and stirring, to obtain final product.
3. preparation method according to claim 2, it is characterised in that the particle diameter of described nano silicon is preferably 200-500nm.
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CN111672269A (en) * 2020-06-28 2020-09-18 潮州市中乾环境科技有限公司 Environment-friendly waste gas treatment device with adsorption function
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