CN105733727B - The attapulgite clay compounded additive and preparation method of reduction domestic coke ignition temperature and application - Google Patents

The attapulgite clay compounded additive and preparation method of reduction domestic coke ignition temperature and application Download PDF

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CN105733727B
CN105733727B CN201610103027.2A CN201610103027A CN105733727B CN 105733727 B CN105733727 B CN 105733727B CN 201610103027 A CN201610103027 A CN 201610103027A CN 105733727 B CN105733727 B CN 105733727B
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additive
attapulgite clay
clay compounded
coal
attapulgite
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CN105733727A (en
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杜文广
刘守军
张智聪
杨颂
上官炬
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Taiyuan Green Coke Energy Co ltd
Taiyuan University of Technology
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Taiyuan Green Coke Energy Co ltd
Taiyuan University of Technology
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    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10LFUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
    • C10L5/00Solid fuels
    • C10L5/02Solid fuels such as briquettes consisting mainly of carbonaceous materials of mineral or non-mineral origin
    • C10L5/04Raw material of mineral origin to be used; Pretreatment thereof
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10BDESTRUCTIVE DISTILLATION OF CARBONAGEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
    • C10B57/00Other processes not covered before; Features of destructive distillation processes in general
    • C10B57/04Other processes not covered before; Features of destructive distillation processes in general using charges of special composition
    • C10B57/06Other processes not covered before; Features of destructive distillation processes in general using charges of special composition containing additives
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10LFUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
    • C10L10/00Use of additives to fuels or fires for particular purposes
    • C10L10/02Use of additives to fuels or fires for particular purposes for reducing smoke development
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10LFUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
    • C10L9/00Treating solid fuels to improve their combustion
    • C10L9/10Treating solid fuels to improve their combustion by using additives
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10LFUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
    • C10L2230/00Function and purpose of a components of a fuel or the composition as a whole
    • C10L2230/04Catalyst added to fuel stream to improve a reaction
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10LFUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
    • C10L2230/00Function and purpose of a components of a fuel or the composition as a whole
    • C10L2230/22Function and purpose of a components of a fuel or the composition as a whole for improving fuel economy or fuel efficiency

Abstract

It is a kind of reduce domestic coke ignition temperature attapulgite clay compounded additive parts by weight group become 30~60 parts of attapulgite, 40~70 parts of lime stone.Raw material sources of the present invention enrich extensively, it is cheap, ignition temperature cooling effect is significant, oxysulfide and 70% or more nitrogen oxides emission reduction, 96% or more flue dust emission reduction, to surrounding city life in the countryside coal is solved, improve rural area and city environmental quality, reduces haze weather and be of great immediate significance.

Description

The attapulgite clay compounded additive and preparation method of reduction domestic coke ignition temperature and application
Technical field
The present invention relates to a kind of attapulgite clay compounded additive for reducing domestic coke ignition temperature and preparation method and answer With.
Background technique
Coal burning be China at present so that from now on for quite a long time obtain the energy major way, a large amount of coals it is direct Dust, sulfur dioxide, nitrogen oxides of burning and exhausting etc. cause serious harm to ecological environment, especially atmospheric environment, Cause China's air environmental pollution serious, haze weather takes place frequently.Based on pollution that caused by coal burning status, country has successively put into effect a series of Law and regulation, and take strong punitive measures.Although the implementation of these regulations plays the aggravation of pollution that caused by coal burning degree It is acted on to certain containment, but still poor remote apart from environmental objective to be achieved.
In fact, rural household fire coal environmental pollution can not be ignored.According to initial estimate, northern country 1 ton of height of every burning Volatilize raw coal, it will the carbon dioxide (carbon emission coefficient 0.67) of discharge 2.5 tons or more, 150 kilograms or more other stain object (oxidation of coal rate 0.85).Civilian scattered burning coal consumption in 2014 is 1.6 hundred million tons, accounts for the 3.8% of national coal consumption, only with sulfur dioxide For discharge, power plant of China annual emissions are 2,000,000 tons, and it is the 1.6 of power plant emission total amount that civilian scattered burning, which is then up to 3,200,000 tons, Times.In addition, a series of problems, such as smoke contamination of civilian scattered burning coal, nitrogen oxides pollution, cinder pollution, is to ecological environment It destroys even more inestimable.However, being influenced by factors such as region, economy, culture, solve very difficult.To from root The pollution that caused by coal burning of rural area and samll cities and towns is solved the problems, such as in sheet, provides high-quality, low price for these areas, clean alternative fuel is to work as It is engaged in anxious.
Domestic coke is and to be aided with a small amount of coking coal, sulphur-fixing agent, carburant, combustion adjuvant etc. based on bunker coal (thermal coal), Using existing coke-oven plant's production equipment, pass through cleaning solid fuel obtained by high-temperature retorting.With blocking good, moderate strength, low Volatilization, low emission sulphur and the advantages that be not easy slagging, are not necessarily to desulfurization equipment, tail gas can meet national emission standard;And easy point Fire, continuous fiery ability is strong, heating rate is fast, firing duration is long, is the various ideal fuel of domestic life stove.
Coke is used as domestic fuel, it is necessary to solve the problems, such as coke ignition temperature height, ignition difficulties.Currently, metallurgical coke Fiery temperature is 600 DEG C or so, and bituminous coal and anthracitic ignition temperature are respectively 350 DEG C and 500 DEG C.Therefore, it is necessary to by helping The introducing for firing agent, is down to 400 DEG C or so for ignition temperature, to meet civilian furnace igniting requirement.
Patent about combustion-supporting agent for fuel coal is existing very much, and if CN90105106.3 discloses a kind of combustion-supporting agent for fuel coal, it contains There are three kinds of boron mud, lime stone, bauxite, white clay, manganese slag, iron oxide, canebreak and sodium carbonate, sodium nitrate, sodium chloride sodium At least one of salt, the combustion adjuvant can obviously improve combustion position, improve stove fire temperature;CN97105154.2 discloses a kind of suitable For the combustion-supporting agent for fuel coal of a variety of coals, mine tailings, manganese dioxide, production potassium bichromate are selected by boron mud, Calcium Carbide Ash, lime stone, iron Waste residue, produce sodium dichromate waste residue, bauxite, sodium hydroxide, sodium carbonate, sodium nitrate, sodium oxide molybdena and canebreak press one Combustion adjuvant and coal, are mixed in a certain ratio uniformly when use by certainty ratio composition;CN201310417513.8 discloses one Energy-efficient combustion-supporting agent for fuel coal of kind and preparation method thereof, formula is made of zinc oxide and manganese dioxide, and burning of coal can be improved Activity and ignition performance, flame temperature.These combustion adjuvants are the products for coal-fired exploitation, mostly using the skill for helping oxygen to burn Art principle, is directly added into fire coal, promotes coal full combustion, plays the role of combustion-supporting, energization, economizes on coal.Since domestic coke needs To pass through the special process of high-temperature retorting, most of component in combustion-supporting agent for fuel coal can fail because of pyrolytic;Therefore, civilian Coke is not available the combustion-supporting agent for fuel coal of the prior art.It is retrieved, the additive for reducing domestic coke ignition temperature has not been reported.
Summary of the invention
The object of the present invention is to provide a kind of the attapulgite clay compounded of the reduction domestic coke ignition temperature of good cooling effect Additive and its preparation method and application.
There are significant differences for the combustion adjuvant of the present invention and existing literature report, are mainly manifested in: 1) reducing ignition temperature Mechanism is different.Traditional combustion-supporting agent for fuel coal itself is combustibles, because its ignition temperature is low, is ignited coal by spontaneous combustion, therefore, addition helps Absolute prohibition high-temperature process after combustion agent, otherwise will lose combustion-supporting effect;The combustion-supporting catalytic action derived from composite oxides of the present invention. First under high-temperature retorting reducing condition, coke surface and internal formation carbon defects are acted on by the catalytic gasification of auxiliary agent, at For the firing point of oxidizing fire;In addition, composite assistant under high temperature reducing atmospheres, will form a small amount of microcrystalline, oxygen pole is met Easy firing heat release forms localized hyperthermia's point, thus the coke that ignites.2) it is different that the stage is added.Traditional combustion-supporting agent for fuel coal is mostly in moulded coal system Standby preceding addition, then through mixing, bonding, cold moudling;Or directly enter furnace burning after mixing with scattered coal.This patent auxiliary agent is in destructive distillation It is added when coal blending, is mixed, made firm by ramming, high-temperature retorting becomes civilian clean coke.
Attapulgite is a kind of aqueous rich magnesium aluminosilicate clays mineral for having chain layer structure, and it is viscous that structure belongs to 2:1 type Native mineral.Attapulgite has big specific surface area (9.6~36m2/ g) and more developed microcellular structure, exist in its structure Crystal lattice contains variable amount of Na in crystal+、Ca2+、Fe3+、Al3+, crystal is in needle-shaped, threadiness or fiber set shape.Its Ideal chemical molecular formula are as follows: Mg5Si8O20(OH)2(OH2)4·4H2O.Due to Concave-convex clay rod have it is special physico Learn property and processing performance, make its petroleum, chemical industry, building materials, papermaking, medicine, in terms of be used widely.
The chemical component of attapulgite includes the following:
Note: loss on ignition (Loss on ignition, be abbreviated as LOI), also known as igloss amount refer to and dry at 105~110 DEG C The weight percent that is lost after 1000~1100 DEG C of calcinations of raw material, the crystallization being discharged during heating including raw material The CO that water, carbonate decomposition go out2, sulphate decomposition go out SO2And organic impurities is excluded the loss of rear object amount.
The ignition temperature that the present invention for the first time compounds attapulgite with calcium carbonate for reducing domestic coke.
To achieve the goals above, the technical solution used in the present invention is as follows:
A kind of attapulgite clay compounded additive reducing domestic coke ignition temperature, parts by weight group become attapulgite 30 ~60 parts, 40~70 parts of lime stone.
Preparation method of the present invention, includes the following steps:
By after drying attapulgite, lime stone additive raw material is respectively through rough and torn, thin broken to granularity≤3mm;
(2) the additive raw material being crushed is weighed respectively, and is mixed, and is stirred evenly;
(3) the mixture stirred evenly makes raw material granularity≤150 mesh (0.1mm) through dry grinding;Then 260~300 It calcines 1~2 hour, is cooled to room temperature under the conditions of DEG C, as attapulgite clay compounded additive.
The application of the attapulgite clay compounded additive of the present invention, includes the following steps:
By attapulgite clay compounded additive: mixed coal weight ratio is 0.5-5.0:100, and attapulgite clay compounded additive is added It is added in mixed coal, air is completely cut off in gas retort and is heated to 900~1100 DEG C, continuous heating 16~for 24 hours, then by red heat furnace Material through quenching process is down to room temperature after coming out of the stove, then screened to get to the domestic coke containing attapulgite clay compounded additive.
The quality index of mixed coal as described above are as follows: FCd>=50%, Vadf>=25%, Ad≤ 25%, Std< 1.5%.
Screening as described above is that be down to the furnace charge screening of room temperature be 25-80mm granularity.
The prior art of the present invention is compared, and direct bring and the advantages of necessarily leading to are as follows with good effect:
In the methods of the invention, used attapulgite clay compounded additive, raw material sources enrich extensively, and price is low It is honest and clean, it is added directly in mixed coal, the domestic coke containing attapulgite clay compounded additive, kindling is made by high-temperature retorting Temperature can be reduced to 385~410 DEG C from 550~630 DEG C, and decline temperature amplitude is up to 165~220 DEG C, significant effect.
In the methods of the invention, the domestic coke of production, compared with direct burning coal, oxysulfide subtracts with nitrogen oxides 70% or more row, 96% or more flue dust emission reduction improve rural area and urban environment matter to surrounding city life in the countryside coal is solved Amount reduces haze weather and is of great immediate significance.
Specific embodiment
A specific embodiment of the invention is made below and being further explained.
Embodiment 1
(1) by attapulgite (the chemical component SiO after drying255.5wt%;Al2O310.1wt%;Fe2O3 6.7wt%;Na2O 0.11wt%;K2O 1.30wt%;CaO 1.93wt%;MgO 11.35wt%;MnO 0.61wt%; TiO20.6wt%;LOI11.8wt%), lime stone additive raw material is respectively through rough and torn, thin broken to granularity≤3mm;
(2) the attapulgite 60kg being crushed, lime stone 40kg are successively weighed respectively, and is mixed, and stirring is equal It is even;
(3) the mixture stirred evenly makes raw material granularity≤150 mesh (0.1mm) through dry grinding;Then in 260 DEG C of conditions Lower calcining 2 hours, is cooled to room temperature, as attapulgite clay compounded additive;
As-fired coal material by the jet coal of 20wt%, the meager coal of 15wt%, 1/3 coking coal of 30wt%, 20wt% rich coal Coking coal cooperation with 15wt% forms mixed coal;The quality index of its mixed coal are as follows: Vadf30.0%, Ad13.5%, FCd60.6%, St,d0.67%;Adhesive index=74, fineness (≤3mm)=73.6%;
(5) press attapulgite clay compounded additive: mixed coal weight ratio is 0.5:100, the attapulgite clay compounded addition that will be made Agent is added in mixed coal, and air is completely cut off in gas retort and is heated to 1100 DEG C, then continuous heating 16h goes out red heat furnace charge It is down to room temperature through quenching process after furnace, then screened, obtains the people containing attapulgite clay compounded additive that granularity is 25-80mm Use coke.The burnt progress civilian to gained in the civilian reverberatory furnace of NS18-2 type 150m2 of Beijing Chuan Zi stove Co., Ltd production Combustion test tests its pollutant effulent, compared with direct fire coal, oxysulfide emission reduction 72%, and nitrogen oxides emission reduction 70%, cigarette Dirt emission reduction 96%.
Comparative example: not adding any additive in mixed coal, in gas retort completely cut off air be heated to 1100 DEG C, persistently plus Hot 16h is down to room temperature through quenching process after then red heat furnace charge is come out of the stove, then screened, and gained granularity is the coke of 25-80mm As control coke.
Civilian to gained burnt respectively and control carries out burning point test experiments with coke in JDRD-5A type determination of ignition point instrument, reality Test that the results are shown in Table 1.
Table 1 adds compound additive and compares with the burning point for being not added with compound additive coke
Embodiment 2
(1) by attapulgite (the chemical component SiO after drying253.2wt%;Al2O314.8wt%;Fe2O3 6.4wt%;Na2O 0.09wt%;K2O 1.20wt%;CaO 1.63wt%;MgO 11.1wt%;MnO 0.49wt%;TiO2 0.52wt%;LOI10.57wt%), lime stone additive raw material is respectively through rough and torn, thin broken to granularity≤3mm;
(2) the attapulgite 52.5kg being crushed, lime stone 47.5kg are successively weighed respectively, and is mixed, and are stirred Uniformly;
(3) the mixture stirred evenly makes raw material granularity≤150 mesh (0.1mm) through dry grinding;Then in 270 DEG C of conditions Lower calcining 1.8 hours, is packed, as attapulgite clay compounded additive after being cooled to room temperature;
(4) as-fired coal not gluing by the weakly caking coal of 30wt%, the jet coal of 40wt%, the gas rich coal of 20wt% and 10wt% Coal cooperation forms mixed coal;Its quality index (wt%): Vadf35.0%, Ad13.5%, FCd56.2%, St,d0.84%, bonding Index G=40, fineness (≤3mm)=86.5%;
(5) by attapulgite clay compounded additive: mixed coal weight ratio is the attapulgite clay compounded addition that 1.8:100 will make Agent is added in mixed coal, and air is completely cut off in gas retort and is heated to 1050 DEG C, then continuous heating 18h goes out red heat furnace charge It is down to room temperature through quenching process after furnace, then screened, obtains the people containing attapulgite clay compounded additive that granularity is 25-80mm Use coke.The NS18-2 type 150m that Chuan Zi stove Co., Ltd produces in Beijing2Burnt progress civilian to gained in civilian reverberatory furnace Combustion test tests its pollutant effulent, compared with direct fire coal, oxysulfide emission reduction 74%, and nitrogen oxides emission reduction 71%, cigarette Dirt emission reduction 96.5%.
Comparative example: not adding any additive in mixed coal, in gas retort completely cut off air be heated to 1050 DEG C, persistently plus Hot 18h is down to room temperature through quenching process after then red heat furnace charge is come out of the stove, then screened, and gained granularity is the coke of 25-80mm As control coke.
Civilian to gained burnt respectively and control carries out burning point test experiments with coke in JDRD-5A type determination of ignition point instrument, reality Test that the results are shown in Table 2.
Table 2 adds compound additive and compares with the burning point for being not added with compound additive coke
Test group Burning point DEG C Decline temperature DEG C
Control coke 570 -
Add the civilian coke of compound additive 390 180
Embodiment 3
(1) by attapulgite (the chemical component SiO after drying250.6wt%;Al2O319.6wt%;Fe2O3 6.1wt%;Na2O 0.07wt%;K2O 1.15wt%;CaO 1.21wt%;MgO 10.92wt%;MnO 0.34wt%; TiO20.47wt%;LOI9.54wt%), lime stone additive raw material is respectively through rough and torn, thin broken to granularity≤3mm;
(2) the attapulgite 45kg being crushed, lime stone 55kg are successively weighed respectively, and is mixed, and stirring is equal It is even;
(3) the mixture stirred evenly makes raw material granularity≤150 mesh (0.1mm) through dry grinding;Then in 280 DEG C of conditions Lower calcining 1.5 hours, is packed, as attapulgite clay compounded additive after being cooled to room temperature;
As-fired coal material by the jet coal of 20wt%, the meager coal of 15wt%, 1/3 coking coal of 30wt%, 20wt% rich coal Coking coal cooperation with 15wt% forms mixed coal;The quality index of its mixed coal are as follows: Vadf30.0%, Ad13.5%, FCd60.6%, St,d0.67%;Adhesive index=74, fineness (≤3mm)=73.6%;
(5) by attapulgite clay compounded additive: mixed coal weight ratio is the attapulgite clay compounded addition that 2.5:100 will make Agent is added in mixed coal, and air is completely cut off in gas retort and is heated to 1000 DEG C, then continuous heating 20h goes out red heat furnace charge It is down to room temperature through quenching process after furnace, then screened, obtains the people containing attapulgite clay compounded additive that granularity is 25-80mm Use coke.The NS18-2 type 150m that Chuan Zi stove Co., Ltd produces in Beijing2Burnt progress civilian to gained in civilian reverberatory furnace Combustion test tests its pollutant effulent, compared with direct fire coal, oxysulfide emission reduction 76%, and nitrogen oxides emission reduction 72%, cigarette Dirt emission reduction 97%;
Comparative example: not adding any additive in mixed coal, in gas retort completely cut off air be heated to 1000 DEG C, persistently plus Hot 20h is down to room temperature through quenching process after then red heat furnace charge is come out of the stove, then screened, and gained granularity is the coke of 25-80mm As control coke.
Civilian to gained burnt respectively and control carries out burning point test experiments with coke in JDRD-5A type determination of ignition point instrument, reality Test that the results are shown in Table 3.
Table 3 adds compound additive and compares with the burning point for being not added with compound additive coke
Test group Burning point DEG C Decline temperature DEG C
Control coke 590 -
Add the civilian coke of compound additive 395 195
Embodiment 4
(1) by attapulgite (the chemical component SiO after drying248.1wt%;Al2O324.3wt%;Fe2O3 5.9wt%;Na2O 0.05wt%;K2O 1.04wt%;CaO 0.82wt%;MgO 10.7wt%;MnO 0.21wt%;TiO2 0.4wt%;LOI8.48wt%), lime stone additive raw material is respectively through rough and torn, thin broken to granularity≤3mm;
(2) the attapulgite 37.5kg being crushed, lime stone 62.5kg are successively weighed respectively, and is mixed, and are stirred Uniformly;
(3) the mixture stirred evenly makes raw material granularity≤150 mesh (0.1mm) through dry grinding;Then in 290 DEG C of conditions Lower calcining 1.3 hours, is packed, as attapulgite clay compounded additive after being cooled to room temperature;
(4) as-fired coal not gluing by the weakly caking coal of 30wt%, the jet coal of 40wt%, the gas rich coal of 20wt% and 10wt% Coal cooperation forms mixed coal;Its quality index (wt%): Vadf35.0%, Ad13.5%, FCd56.2%, St,d0.84%, bonding Index G=40, fineness (≤3mm)=86.5%;
(5) by attapulgite clay compounded additive: mixed coal weight ratio is the attapulgite clay compounded addition that 3.8:100 will make Agent is added in mixed coal, and air is completely cut off in gas retort and is heated to 950 DEG C, then continuous heating 22h comes out of the stove red heat furnace charge It is down to room temperature by quenching process, then screened, obtaining granularity is the civilian containing attapulgite clay compounded additive of 25-80mm Coke.The NS18-2 type 150m that Chuan Zi stove Co., Ltd produces in Beijing2The civilian coke of gained is fired in civilian reverberatory furnace Test is burnt, its pollutant effulent is tested, compared with direct fire coal, oxysulfide emission reduction 77%, nitrogen oxides emission reduction 73%, flue dust Emission reduction 97.5%.
Comparative example: not adding any additive in mixed coal, in gas retort completely cut off air be heated to 950 DEG C, persistently plus Hot 22h is down to room temperature through quenching process after then red heat furnace charge is come out of the stove, then screened, and gained granularity is the coke of 25-80mm As control coke.
Civilian to gained burnt respectively and control carries out burning point test experiments with coke in JDRD-5A type determination of ignition point instrument, reality Test that the results are shown in Table 4.
Table 4 adds compound additive and compares with the burning point for being not added with compound additive coke
Test group Burning point DEG C Decline temperature DEG C
Control coke 610 -
Add the civilian coke of compound additive 400 210
Embodiment 5
(1) by attapulgite (the chemical component SiO after drying245.6wt%;Al2O329.0wt%;Fe2O3 5.7wt%;Na2O 0.03wt%;K2O 0.93wt%;CaO 0.42wt%;MgO10.4wt%;MnO 0.1wt%;TiO2 0.32wt%;LOI7.5wt%), lime stone additive raw material is respectively through rough and torn, thin broken to granularity≤3mm;
(2) the attapulgite 30kg being crushed, lime stone 70kg are successively weighed respectively, and is mixed, and stirring is equal It is even;
(3) the mixture stirred evenly makes raw material granularity≤150 mesh (0.1mm) through dry grinding;Then in 300 DEG C of conditions Lower calcining 1 hour, is packed, as attapulgite clay compounded additive after being cooled to room temperature;
As-fired coal material by the jet coal of 20wt%, the meager coal of 15wt%, 1/3 coking coal of 30wt%, 20wt% rich coal Coking coal cooperation with 15wt% forms mixed coal;The quality index of its mixed coal are as follows: Vadf30.0%, Ad13.5%, FCd60.6%, St,d0.67%;Adhesive index=74, fineness (≤3mm)=73.6%;
(5) press attapulgite clay compounded additive: mixed coal weight ratio is 5.0:100, the attapulgite clay compounded addition that will be made Agent is added in mixed coal, and air is completely cut off in gas retort and is heated to 900 DEG C, continuous heating for 24 hours, then comes out of the stove red heat furnace charge It is down to room temperature by quenching process, then screened, obtaining granularity is the civilian containing attapulgite clay compounded additive of 25-80mm Coke.The NS18-2 type 150m that Chuan Zi stove Co., Ltd produces in Beijing2The civilian coke of gained is fired in civilian reverberatory furnace Test is burnt, its pollutant effulent is tested, compared with direct fire coal, oxysulfide emission reduction 78%, nitrogen oxides emission reduction 74%, flue dust Emission reduction 98%;
Comparative example: not adding any additive in mixed coal, in gas retort completely cut off air be heated to 900 DEG C, persistently plus Heat for 24 hours, is down to room temperature through quenching process after then red heat furnace charge is come out of the stove, then screened, and gained granularity is the coke of 25-80mm As control coke.
Civilian to gained burnt respectively and control carries out burning point test experiments with coke in JDRD-5A type determination of ignition point instrument, reality Test that the results are shown in Table 5.
Table 5 adds compound additive and compares with the burning point for being not added with compound additive coke
Test group Burning point DEG C Decline temperature DEG C
Control coke 630 -
Add the civilian coke of compound additive 410 220
After can be seen that the attapulgite clay compounded additive of addition by Examples 1 to 5 experimental result, the people are significantly reduced It ensure that a kind of application of the domestic coke as fuel so that domestic coke is easier to catch fire with the burning point of coke.

Claims (5)

1. a kind of application for the attapulgite clay compounded additive for reducing domestic coke ignition temperature, it is characterised in that including walking as follows It is rapid:
By attapulgite clay compounded additive: mixed coal weight ratio is 0.5-5.0:100, and attapulgite clay compounded additive is added to In mixed coal, completely cuts off air in gas retort and be heated to 900~1100 DEG C, continuous heating 16~for 24 hours, then red heat furnace charge is gone out Room temperature is down to through quenching process after furnace, then screened to get to the domestic coke containing attapulgite clay compounded additive;
The parts by weight group of the attapulgite clay compounded additive for reducing domestic coke ignition temperature becomes attapulgite 30~60 Part, 40~70 parts of lime stone.
2. a kind of application of attapulgite clay compounded additive for reducing domestic coke ignition temperature as described in claim 1, It is characterized in that the quality index of the mixed coal are as follows: FCd>=50%, Vadf>=25%, Ad≤ 25%, Std< 1.5%.
3. a kind of application of attapulgite clay compounded additive for reducing domestic coke ignition temperature as described in claim 1, It is characterized in that the screening is that will drop to the furnace charge screening of room temperature be 25-80mm granularity.
4. a kind of application of attapulgite clay compounded additive for reducing domestic coke ignition temperature as described in claim 1, It is characterized in that the attapulgite weight percent chemical component includes the following:
SiO245.6-60.5;Al2O339.0-10.1;Fe2O35.7-6.7;Na2O 0.03-0.11;K2O 0.96-1.30; CaO 0.42-1.95;MgO 10.7-11.35;MnO 0.1-0.61;TiO20.32-0.6;LOI 7.5-11.8.
5. a kind of application of attapulgite clay compounded additive for reducing domestic coke ignition temperature as described in claim 1 or 4, It is characterized in that reducing the preparation method of the attapulgite clay compounded additive of domestic coke ignition temperature, include the following steps:
By after drying attapulgite, lime stone additive raw material is respectively through rough and torn, thin broken to granularity≤3mm;
(2) the additive raw material being crushed is weighed respectively, and is mixed, and is stirred evenly;
(3) the mixture stirred evenly makes raw material granularity≤0.1mm through dry grinding, then forges under the conditions of 260~300 DEG C It burns 1~2 hour, is cooled to room temperature, as attapulgite clay compounded additive.
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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4316813A (en) * 1980-08-04 1982-02-23 Engelhard Minerals & Chemicals Corp. Limestone-based sorbent agglomerates for removal of sulfur compounds in hot gases and method of making
CN102357342A (en) * 2011-08-04 2012-02-22 东南大学 Method for preparing attapulgite clay-modified calcium-based carbon dioxide absorbent

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4316813A (en) * 1980-08-04 1982-02-23 Engelhard Minerals & Chemicals Corp. Limestone-based sorbent agglomerates for removal of sulfur compounds in hot gases and method of making
CN102357342A (en) * 2011-08-04 2012-02-22 东南大学 Method for preparing attapulgite clay-modified calcium-based carbon dioxide absorbent

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
凹土与碳酸钙复配加填对纸张强度性能的影响;韩群等;《中国造纸》;20130228;第32卷(第2期);第12-15页 *

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