CN108927118A - A kind of calcining petroleum coke waste-gas adsorbant and its preparation method and application - Google Patents

A kind of calcining petroleum coke waste-gas adsorbant and its preparation method and application Download PDF

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CN108927118A
CN108927118A CN201810879924.1A CN201810879924A CN108927118A CN 108927118 A CN108927118 A CN 108927118A CN 201810879924 A CN201810879924 A CN 201810879924A CN 108927118 A CN108927118 A CN 108927118A
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active carbon
petroleum coke
parts
gas
calcining petroleum
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CN108927118B (en
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王利民
刘涛
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Medium Carbon Energy (Shandong) Co.,Ltd.
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China Carbon Energy (shandong) Co Ltd
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    • 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
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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
    • B01D53/02—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
    • B01J20/0203—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising compounds of metals not provided for in B01J20/04
    • B01J20/0218—Compounds of Cr, Mo, W
    • 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
    • B01J20/04—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
    • B01J20/048—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 phosphorus, e.g. phosphates, apatites, hydroxyapatites
    • 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
    • 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
    • B01D2257/404—Nitrogen oxides other than dinitrogen oxide
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2257/00—Components to be removed
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2257/00—Components to be removed
    • B01D2257/70—Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
    • B01D2257/702—Hydrocarbons
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B01D2257/00—Components to be removed
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    • B01D2257/7022—Aliphatic hydrocarbons

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Abstract

The present invention provides a kind of calcining petroleum coke waste-gas adsorbant and its preparation method and application, and adsorbent includes following raw material components: active carbon, coir fibre, nanometer calcium carbonate, graphene, pentaerythrite.The active carbon is made of cocoanut active charcoal, sepiolite active carbon, almond shell active carbon according to the mass ratio of 2:1:3.Adsorbent of the present invention is 95.3-96.7% to the absorptivity of sulfur dioxide, and the absorptivity to nitrogen dioxide is 89.3-94.3%.

Description

A kind of calcining petroleum coke waste-gas adsorbant and its preparation method and application
Technical field
The present invention relates to the processing methods of petroleum coke, and in particular to a kind of calcining petroleum coke waste-gas adsorbant and its preparation side Method and application.
Background technique
The graphite electrode of steel-making or aluminium processed, magnesium processed anode mix (melting electrode) when, to make petroleum coke (green coke) It adapts to require, it is necessary to calcine green coke.Calcination temperature is generally at 1300 DEG C or so, it is therefore an objective to as far as possible by volatile fraction in petroleum coke It removes.The hydrogen content that petroleum coke reproduced goods can be reduced in this way improves the degree of graphitization of oil coke, to improve graphite electrode Elevated temperature strength and heat resistance, and improve the conductivity of graphite electrode.Calcined coke is pasted mainly for the production of graphite electrode, charcoal Product, Buddha's warrior attendant sand, the industry of food-grade phosphorus, metallurgical industry and calcium carbide etc., wherein most widely used is graphite electrode.Green coke is not It can be directly used for calcium carbide through calcination and make calcium carbide major ingredient, produce silicon carbide and boron carbide makees grinding-material.It can also be directly as smelting Metal working industry air blast coke for furnace or blast furnace wall lining brick fuel can also make fine and close coke of casting technique etc..Calcined coke is sintered into green coke During, a large amount of flue gases are generated, these flue gases remove this containing the pollutant based on sulfur dioxide, nitrogen dioxide, nitric oxide Except, there are also tar particle, hydro carbons, CO2, H2O, 3,4-BaPs etc..
Traditional flue gas processing method mainly includes solid sorbent method and liquid absorption method；Solid sorbent method mainly passes through Magnesia etc. is reacted with sulfur dioxide, by sulfur curable；The disadvantage is that absorbance difference, cannot effectively absorb many smoke components. Although liquid absorption method absorptivity is higher, due to needing high-temperature flue gas to import liquid (generally from overhead collection and by pipeline It is absorbed using ammonium hydroxide)；Its flue gas have sour, therefore, the high requirements on the equipment, cost is very high, general medium-sized and small enterprises without Method supports its higher cost, is not suitable for being widely applied.
Therefore, the solid absorbent of flue gas pollutant can effectively be absorbed as those skilled in the art's research by studying one kind One of important topic.
Summary of the invention
The problem to be solved in the present invention is against the above deficiency, to provide a kind of calcining petroleum coke waste-gas adsorbant and its preparation Methods and applications realize following goal of the invention: effectively absorbing sulfur dioxide, the nitrogen dioxide, an oxygen in calcining petroleum coke exhaust gas Change nitrogen, tar particle, hydro carbons, 3,4-BaPs improve the absorptivity of flue gas pollutant.
For achieving the above object, using following technical scheme:
A kind of calcining petroleum coke waste-gas adsorbant, in parts by weight, including following components: 32-35 parts of active carbon, coir fibre 12-16 parts, 4.5-5.6 parts of nanometer calcium carbonate, 5.7-6.2 parts of graphene, 1.2-1.8 parts of pentaerythrite, delphin 0.6- 0.9 part, 0.15-0.32 parts of lutein, 2-3 parts of ethyl acetate, 1.2-1.6 parts of ammonium molybdate, 2.3-2.9 parts of sodium tripolyphosphate.
The active carbon by cocoanut active charcoal, sepiolite active carbon, almond shell active carbon according to 2:1:3 mass ratio group At；
The coir fibre: fiber number is 1.5~2dtex, and fibre length is 80~90 μm, and water content is 6~7%；
The nanometer calcium carbonate: calcium carbonate content>=99%, moisture content<0.3%, pH value 9.0-10.0, hydrochloric acid insoluble substance< 0.2%, density 2.7mg/cm3, fineness is 3000 mesh；The graphene: fineness is 30-50 μm.
Preparation method:
Raw material prepare: each raw material component is weighed according to above-mentioned formula rate, it is spare.
The preparation of step 1, active carbon
Cocoanut active charcoal, sepiolite active carbon, almond shell active carbon are mixed according to the mass ratio of 2:1:3, are ground to 100 mesh, Active carbon is made；
The active carbon, mesoporous reach 95.4-95.8%, water content 4-5%, ash 2.3-2.7%, bulk density 385-388g/ L, specific surface area is 1480-1520m2/g, average pore size 3.5-4.2nm.
Step 2, activation
Active carbon is uniformly mixed with pentaerythrite, delphin, lutein, ethyl acetate, dispersion liquid, dispersion liquid is made with water Mass concentration is 42-45%；Dispersion liquid is heated to 60-65 DEG C, is heat-treated 5 hours；After dehydration by evaporation, an activated material is obtained, It is cooled to room temperature.
Step 3, re-activation
It by an above-mentioned activated material, is uniformly mixed with re-activation agent, then in the nitrogen protection that N2 flow is 40ml/min Under, temperature is 160 DEG C, activates 40min, obtains activated material；The re-activation agent is the mixing of ammonium molybdate, sodium tripolyphosphate Object, ammonium molybdate, sodium tripolyphosphate mass ratio are 12-16:23-29.
Step 4, finished product
Activated material prepared by step 3 is mixed with coir fibre, nanometer calcium carbonate, graphene；It is mixed under 1800rpm revolving speed Adsorbent finished product is made in 40-50min.
Compared with prior art, technical solution of the present invention has the advantages that
Adsorbent of the present invention is 95.3-96.7% to the absorptivity of sulfur dioxide, and the absorptivity to nitrogen dioxide is 89.3- 94.3%, it is 99.4-99.5% to nitric oxide production absorptivity, the absorptivity for elaioleucite of focusing is 99.8-99.9%, is inhaled to hydro carbons Yield is 99.8-99.9%, and the absorptivity to 3,4-BaPs is 100%.Specific embodiment
A kind of calcining petroleum coke waste-gas adsorbant of embodiment 1
A kind of calcining petroleum coke waste-gas adsorbant, including following components: 32 parts of active carbon, 16 parts of coir fibre, nanometer calcium carbonate 4.5 parts, 6.2 parts of graphene, 1.2 parts of pentaerythrite, 0.6 part of delphin, 0.32 part of lutein, 2 parts of ethyl acetate, molybdic acid 1.6 parts of ammonium, 2.9 parts of sodium tripolyphosphate.
The active carbon by cocoanut active charcoal, sepiolite active carbon, almond shell active carbon according to 2:1:3 mass ratio group At；
The coir fibre: fiber number 1.5dtex, fibre length are 90 μm, water content 7%；
The nanometer calcium carbonate: calcium carbonate content>=99%, moisture content<0.3%, pH value 9.0-10.0, hydrochloric acid insoluble substance< 0.2%, density 2.7mg/cm3, fineness is 3000 mesh；The graphene: fineness is 30 μm.
Preparation method:
Raw material prepare: each raw material component is weighed according to above-mentioned formula rate, it is spare.
The preparation of step 1, active carbon
Cocoanut active charcoal, sepiolite active carbon, almond shell active carbon are mixed according to the mass ratio of 2:1:3, are ground to 100 mesh, Active carbon is made；
The active carbon, mesoporous are up to 95.4%, water content 5%, ash 2.7%, bulk density 388g/L, specific surface area 1480m2/g, average pore size 4.2nm.
Step 2, activation
Active carbon is uniformly mixed with pentaerythrite, delphin, lutein, ethyl acetate, dispersion liquid, dispersion liquid is made with water Mass concentration is 42%；Dispersion liquid is heated to 60 DEG C, is heat-treated 5 hours；After dehydration by evaporation, an activated material is obtained, is cooled to Room temperature.
Step 3, re-activation
It by an above-mentioned activated material, is uniformly mixed with re-activation agent, then in the nitrogen protection that N2 flow is 40ml/min Under, temperature is 160 DEG C, activates 40min, obtains activated material；The re-activation agent is the mixing of ammonium molybdate, sodium tripolyphosphate Object, ammonium molybdate, sodium tripolyphosphate mass ratio are 16:29.
Step 4, finished product
Activated material prepared by step 3 is mixed with coir fibre, nanometer calcium carbonate, graphene；It is mixed under 1800rpm revolving speed Adsorbent finished product is made in 40min.
A kind of calcining petroleum coke waste-gas adsorbant of embodiment 2
A kind of calcining petroleum coke waste-gas adsorbant, including following components: 33 parts of active carbon, 14 parts of coir fibre, nanometer calcium carbonate 5.5 parts, 5.8 parts of graphene, 1.5 parts of pentaerythrite, 0.8 part of delphin, 0.25 part of lutein, 2.5 parts of ethyl acetate, molybdenum 1.4 parts of sour ammonium, 2.6 parts of sodium tripolyphosphate.
The active carbon by cocoanut active charcoal, sepiolite active carbon, almond shell active carbon according to 2:1:3 mass ratio group At；
The coir fibre: fiber number 2dtex, fibre length are 85 μm, water content 6.5%；
The nanometer calcium carbonate: calcium carbonate content>=99%, moisture content<0.3%, pH value 9.0-10.0, hydrochloric acid insoluble substance< 0.2%, density 2.7mg/cm3, fineness is 3000 mesh；The graphene: fineness is 40 μm.
Preparation method:
Raw material prepare: each raw material component is weighed according to above-mentioned formula rate, it is spare.
The preparation of step 1, active carbon
Cocoanut active charcoal, sepiolite active carbon, almond shell active carbon are mixed according to the mass ratio of 2:1:3, are ground to 100 mesh, Active carbon is made；
The active carbon, mesoporous are up to 95.8%, water content 4%, ash 2.3%, bulk density 385g/L, specific surface area 1520m2/g, average pore size 3.5nm.
Step 2, activation
Active carbon is uniformly mixed with pentaerythrite, delphin, lutein, ethyl acetate, dispersion liquid, dispersion liquid is made with water Mass concentration is 45%；Dispersion liquid is heated to 65 DEG C, is heat-treated 5 hours；After dehydration by evaporation, an activated material is obtained, is cooled to Room temperature.
Step 3, re-activation
It by an above-mentioned activated material, is uniformly mixed with re-activation agent, then in the nitrogen protection that N2 flow is 40ml/min Under, temperature is 160 DEG C, activates 40min, obtains activated material；The re-activation agent is the mixing of ammonium molybdate, sodium tripolyphosphate Object, ammonium molybdate, sodium tripolyphosphate mass ratio are 14:26.
Step 4, finished product
Activated material prepared by step 3 is mixed with coir fibre, nanometer calcium carbonate, graphene；It is mixed under 1800rpm revolving speed Adsorbent finished product is made in 50min.
A kind of calcining petroleum coke waste-gas adsorbant of embodiment 3
A kind of calcining petroleum coke waste-gas adsorbant, including following components: 35 parts of active carbon, 12 parts of coir fibre, nanometer calcium carbonate 5.6 parts, 5.7 parts of graphene, 1.8 parts of pentaerythrite, 0.9 part of delphin, 0.15 part of lutein, 3 parts of ethyl acetate, ammonium molybdate 1.2 parts, 2.3 parts of sodium tripolyphosphate.
The active carbon by cocoanut active charcoal, sepiolite active carbon, almond shell active carbon according to 2:1:3 mass ratio group At；
The coir fibre: fiber number 1.8dtex, fibre length are 85 μm, water content 6.6%；
The nanometer calcium carbonate: calcium carbonate content>=99%, moisture content<0.3%, pH value 9.0-10.0, hydrochloric acid insoluble substance< 0.2%, density 2.7mg/cm3, fineness is 3000 mesh；The graphene: fineness is 50 μm.
Preparation method:
Raw material prepare: each raw material component is weighed according to above-mentioned formula rate, it is spare.
The preparation of step 1, active carbon
Cocoanut active charcoal, sepiolite active carbon, almond shell active carbon are mixed according to the mass ratio of 2:1:3, are ground to 100 mesh, Active carbon is made；
The active carbon, mesoporous are up to 95.5%, water content 4.6%, ash 2.6%, bulk density 386g/L, specific surface area 1490m2/g, average pore size 3.9nm.
Step 2, activation
Active carbon is uniformly mixed with pentaerythrite, delphin, lutein, ethyl acetate, dispersion liquid, dispersion liquid is made with water Mass concentration is 43%；Dispersion liquid is heated to 63 DEG C, is heat-treated 5 hours；After dehydration by evaporation, an activated material is obtained, is cooled to Room temperature.
Step 3, re-activation
It by an above-mentioned activated material, is uniformly mixed with re-activation agent, then in the nitrogen protection that N2 flow is 40ml/min Under, temperature is 160 DEG C, activates 40min, obtains activated material；The re-activation agent is the mixing of ammonium molybdate, sodium tripolyphosphate Object, ammonium molybdate, sodium tripolyphosphate mass ratio are 12:23.
Step 4, finished product
Activated material prepared by step 3 is mixed with coir fibre, nanometer calcium carbonate, graphene；It is mixed under 1800rpm revolving speed Adsorbent finished product is made in 45min.
Through testing, the adsorbent of embodiment 1-3 is put into the packing layer of flue gas absorbing device, bed stuffing height is 50cm, the flue gas absorbing device are located at calcining petroleum coke outlet port end；The flue gas for enabling calcining petroleum coke to generate It can smoothly enter into the flue gas absorbing device equipped with adsorbent.Flue gas is detected without the pollutant load of flue gas absorbing device, is contained 360 μ g/Nm of sulfur dioxide3, 487 μ g/Nm of nitrogen dioxide3, 315 μ g/Nm of nitric oxide3, 110 μ g/Nm of tar particle3, hydro carbons 88 μg/Nm3, 3,4-BaP, 70 μ g/Nm3。
The content of pollutant in the exhaust gas after flue gas absorbing device is detected, testing result is as shown in the table:
As seen from the above table, content of sulfur dioxide is 12-17 μ g/Nm after adsorbent of the present invention absorption3, nitrogen dioxide 28-52 μ g/ Nm3, nitric oxide 1.6-1.9 μ g/Nm3, tar particle 0.08-0.17 μ g/Nm3, hydro carbons 0.12-0.21 μ g/Nm3, 3,4-benzene And pyrene is 0, effectively absorbs the pollutant in calcining petroleum coke exhaust gas.
The calculation shows that, adsorbent of the present invention are 95.3-96.7% to the absorptivity of sulfur dioxide, the suction to nitrogen dioxide Yield is 89.3-94.3%, is 99.4-99.5% to nitric oxide production absorptivity, and the absorptivity for elaioleucite of focusing is 99.8- 99.9%, it is 99.8-99.9% to hydro carbons absorptivity, the absorptivity to 3,4-BaPs is 100%.
In addition to specified otherwise, percentage of the present invention is mass percent, and the ratio is mass ratio.
Finally, it should be noted that the foregoing is only a preferred embodiment of the present invention, it is not intended to restrict the invention, It, for those skilled in the art, still can be with although describing the invention in detail with reference to the foregoing embodiments It modifies the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features.It is all Within the spirit and principles in the present invention, any modification, equivalent replacement, improvement and so on should be included in guarantor of the invention Within the scope of shield.

Claims (10)

1. a kind of calcining petroleum coke waste-gas adsorbant, it is characterised in that: including following raw material components: active carbon, is received coir fibre Rice calcium carbonate, graphene, pentaerythrite.
2. a kind of calcining petroleum coke waste-gas adsorbant according to claim 1, it is characterised in that: further include following raw material group Point: delphin, lutein, ethyl acetate, ammonium molybdate, sodium tripolyphosphate.
3. a kind of calcining petroleum coke waste-gas adsorbant according to claim 1, it is characterised in that: the weight of the raw material components Measure part are as follows: 32-35 parts of active carbon, 12-16 parts of coir fibre, 4.5-5.6 parts of nanometer calcium carbonate, 5.7-6.2 parts of graphene, season penta 1.2-1.8 parts of tetrol, 0.6-0.9 parts of delphin, 0.15-0.32 parts of lutein, 2-3 parts of ethyl acetate, ammonium molybdate 1.2- 1.6 parts, 2.3-2.9 parts of sodium tripolyphosphate.
4. a kind of calcining petroleum coke waste-gas adsorbant according to claim 1, it is characterised in that: the active carbon is by coconut palm Shell active carbon, sepiolite active carbon, almond shell active carbon are formed according to the mass ratio of 2:1:3.
5. a kind of calcining petroleum coke waste-gas adsorbant according to claim 1, it is characterised in that: the coir fibre: Fiber number is 1.5-2dtex, and fibre length is 80-90 μm, water content 6-7%.
6. a kind of calcining petroleum coke waste-gas adsorbant according to claim 1, it is characterised in that: the nano-calcium carbonate Calcium: calcium carbonate content>=99%, moisture content<0.3%, pH value 9.0-10.0, hydrochloric acid insoluble substance<0.2%, density 2.7mg/ cm3, fineness is 3000 mesh；The graphene: fineness is 30-50 μm.
7. a kind of preparation method of calcining petroleum coke waste-gas adsorbant, it is characterised in that: the preparation step including active carbon；
The preparation of the active carbon: by cocoanut active charcoal, sepiolite active carbon, almond shell active carbon according to 2:1:3 quality Than being mixed with；Active carbon obtained, mesoporous reach 95.4-95.8%, water content 4-5%, ash 2.3-2.7%, accumulation Density 385-388g/L, specific surface area 1480-1520m2/g, average pore size 3.5-4.2nm.
8. a kind of preparation method of calcining petroleum coke waste-gas adsorbant according to claim 7, it is characterised in that: further include Activation step；
The activation: active carbon is uniformly mixed with pentaerythrite, delphin, lutein, ethyl acetate, is made point with water Dispersion liquid, dispersion liquid mass concentration are 42-45%；Dispersion liquid is heated to 60-65 DEG C, is heat-treated 5 hours.
9. a kind of application of calcining petroleum coke waste-gas adsorbant, it is characterised in that: the application: adsorbent being put into flue gas and is inhaled In the packing layer of receiving apparatus, bed stuffing height 50cm, the flue gas absorbing device is located at calcining petroleum coke outlet port End；The flue gas for enabling calcining petroleum coke to generate can smoothly enter into the flue gas absorbing device equipped with adsorbent.
10. a kind of application of calcining petroleum coke waste-gas adsorbant according to claim 9, it is characterised in that: adsorbent pair The absorptivity of SO 2 in waste gas is 95.3-96.7%, and the absorptivity to nitrogen dioxide in exhaust gas is 89.3-94.3%, to useless Nitric oxide production absorptivity is 99.4-99.5% in gas.
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Cited By (4)

* Cited by examiner, † Cited by third party
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CN111659346A (en) * 2019-03-08 2020-09-15 天津大学 Haze collecting, absorbing and converting system based on primary battery principle
CN111762869A (en) * 2020-06-23 2020-10-13 生态环境部南京环境科学研究所 Sewage treatment plant based on modified activated carbon biological filter
CN111762869B (en) * 2020-06-23 2022-06-28 生态环境部南京环境科学研究所 Sewage treatment plant based on modified activated carbon biological filter
CN112774388A (en) * 2021-02-04 2021-05-11 钟学能 Waste gas treatment device for tobacco drying and use method thereof
CN114558441A (en) * 2022-03-02 2022-05-31 通化鑫鸿新材料有限公司 Preparation method and application of solid high-fluidity, high-efficiency and low-byproduct nano calcium carbonate denitration agent

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