CN108774557A - A kind of formed coke and preparation method thereof based on complex biological matter binder - Google Patents
A kind of formed coke and preparation method thereof based on complex biological matter binder Download PDFInfo
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- CN108774557A CN108774557A CN201810530799.3A CN201810530799A CN108774557A CN 108774557 A CN108774557 A CN 108774557A CN 201810530799 A CN201810530799 A CN 201810530799A CN 108774557 A CN108774557 A CN 108774557A
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- formed coke
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS 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
- C10L5/00—Solid fuels
- C10L5/02—Solid fuels such as briquettes consisting mainly of carbonaceous materials of mineral or non-mineral origin
- C10L5/06—Methods of shaping, e.g. pelletizing or briquetting
- C10L5/10—Methods of shaping, e.g. pelletizing or briquetting with the aid of binders, e.g. pretreated binders
- C10L5/105—Methods of shaping, e.g. pelletizing or briquetting with the aid of binders, e.g. pretreated binders with a mixture of organic and inorganic binders
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS 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
- C10L5/00—Solid fuels
- C10L5/02—Solid fuels such as briquettes consisting mainly of carbonaceous materials of mineral or non-mineral origin
- C10L5/04—Raw material of mineral origin to be used; Pretreatment thereof
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Solid Fuels And Fuel-Associated Substances (AREA)
Abstract
The invention discloses a kind of formed coke and preparation method thereof based on complex biological matter binder, which includes the raw material of following mass parts：45-55 parts of semicoke, 5-15 parts of biomass, 1-3 parts of bentonite, 1-3 parts of sodium carboxymethylcellulose, 1-4 parts of chitosan solution；In addition the invention also discloses a kind of formed coke preparation method based on complex biological matter binder, formed coke prepared by the present invention with thermostabilization good, high temperature resistant, with good characteristics such as higher mechanical strengths.After formed coke drying is cooling, measures cold conditions compression strength and be more than 600N/ balls, drop strength is more than 95%, and thermal stability is good, not loose at a high temperature of 1100 DEG C or more.
Description
Technical field
The invention belongs to low-order coal pyrolysis char field shaping techniques, and in particular to one kind is bonded based on complex biological matter
Formed coke of agent and preparation method thereof.
Background technology
Semicoke is also known as semi-coke, is adopted as raw material using low rank coal in lignite, jet coal, dross coal or weakly caking coal etc.
A kind of solid carbonaceous product produced with middle low temperature pyrogenation technology, with fixed carbon is high, ash content is low, sulfur is low, cheap
The features such as.In recent years, large quantities of Coal at Low Temperature destructive distillation enterprises have been built up in western China, especially North Shaanxi Yulin-Shenmu mining area
Industry forms the industries chain group such as calcium carbide, metallurgy, chemical fertilizer, fuel oil.The semicoke fine powder generated in coal low temperature distillation process, due to
Granularity reason cannot be utilized directly, thus greatly reduce the utilization rate of semicoke, and formed coke can effectively solve the comprehensive profit of coke breeze
Use problem.
Formed coke is to keep coke powder blocking under hyperbaric environment using binder, to promote its mechanical strength, increases its granularity.
In formed coke preparation process, for parameters such as the mechanical strength, the flammabilities that improve formed coke, it usually needs binder is added.Currently,
Developed binder can be divided into inorganic type, organic type and complex adhesive three categories by its chemical state.Wherein inorganic type
Binder mainly has lime, cement, gypsum, waterglass, inorganic salts etc., formed coke calorific intensity obtained and thermal stability performance good
It is good, but the ash content of formed coke is larger, poor water resistance.Organic binder includes mainly tar, pitch, sodium humate, polyvinyl alcohol, life
Substance etc., they have higher calorific value, and manufactured formed coke cold strength is preferable, but is also easy to produce secondary pollution, wherein biology
Matter class binder has that source is wide, increment type charred ashes point, calorific value are high, and the formed coke of production has good burning performance, burning point is low, and fires
It burns not slagging, the advantages that waste utilization can be achieved.Complex adhesive is combined by above-mentioned a variety of binders, therefore is continued
The advantages of a variety of binders, receives scholars and more pays close attention to, and most common compound binding agent is mainly dripped with tar, tar
Green and inorganic binder binder as main component, with asphalt and bentonite binder as main component, and with
Biomass and inorganic binder binder as main component etc..Currently, that there are cold strengths is not high for the formed coke of prior art preparation,
It exists simultaneously and causes generation secondary pollutions such as formed coke ash content is higher, tar asphalt is added etc. since addition inorganic bond dosage is larger
Problem.
Invention content
To solve the above problems, the object of the present invention is to provide a kind of formed coke based on complex biological matter binder and its
The features such as preparation method has production cost low, and preparation method is simple, nontoxic, environmentally protective.
To achieve the goals above, the technical solution adopted by the present invention is：It is a kind of based on complex biological matter binder
Formed coke includes the raw material of following mass parts：45-55 parts of semicoke, 5-15 parts of biomass, 1-3 parts of bentonite, sodium carboxymethylcellulose
1-3 parts and 1-4 parts of chitosan solution.
Biomass is Sunflower Stalk at Ca (OH)2The residue for hydrolyzing in saturated solution and then being obtained through press filtration.
The water content that press filtration obtains residue is 30-40%.
The semicoke is the semicoke that low temperature pyrogenation obtains during middle low rank coal uses.
Chitosan solution is to be dissolved in 1-4 parts of a concentration of 0.08- by 0.01-0.04 parts of industrial sheet chitosans of mass fraction
The viscous liquid formed in 0.12mol/L acetic acid solutions.
The present invention also provides a kind of preparation methods based on complex biological matter binder formed coke, include the following steps：
Step 1：By Sunflower Stalk crushed after being dried to 3mm hereinafter, by Sunflower Stalk and saturation Ca (OH)2Solution is in mass ratio
1:8-1:12 mixing obtain Sunflower Stalk hydrolytic residue in 70-100 DEG C of hydrolysis process 2-5h under stirring after press filtration；
Step 2：Semicoke is crushed, its grain size is not more than 3mm after crushing.
Step 3：It is poly- that industrial sheet chitosan is dissolved in a concentration of 0.08-0.12mol/L acetic acid solutions obtained shell in 80 DEG C
Sugar juice；
Step 4：In parts by mass, by 5-15 parts of Sunflower Stalk hydrolytic residue, 1-3 parts of bentonite, sodium carboxymethylcellulose 1-
3 parts, in step 3 chitosan solution 1-4 parts obtained with crushed in step 2 after 45-55 parts of semicoke mix after stir evenly
Mixed material is obtained, and cures 2-5h and obtains matured mixture；
Step 5：By the obtained matured mixture compression moulding in step 4, pressure 20-35MPa, pressurize 30-60s,
Then 4-6h, then dry 1-2h under the conditions of 100 DEG C -105 DEG C are placed at shady and cool ventilation, and formed coke is obtained after cooling.
The water content of mixed material is 12-15% in step 4.
In the step 3, according to the mass fraction, 0.01-0.04 parts of industrial sheet chitosan, 1-4 parts of acetic acid solution.
In the present invention, the specific Action Specification of binder each component is as follows：
Sunflower Stalk hydrolytic residue：The cellulose in biomass can be made fully to be exposed after biomass Sunflower Stalk basic hydrolysis,
To have caking property, meanwhile, Sunflower Stalk volatile matter is more, can make up the few problem of semicoke volatile matter content, increase its burning
Property, while biomass is flammable, burning can also increase calorific value.
Bentonite：Bentonite is mainly alumino-silicate, with expansion after adding water at thick-pasty, high-temperature stability and change
The features such as learning stability, not only can be improved the balling ratio of formed coke, but also ensure that thermostabilization of formed coke during high-temp combustion
Property.
Sodium carboxymethylcellulose：Has the effects that thickening, thickening, water-retaining property, caking property and combustion-supporting.
Chitosan solution：Industrial sheet chitosan becomes viscous liquid after being dissolved in diluted acid, has caking property, and in addition shell is poly-
After sugar juice is contacted with Sunflower Stalk hydrolytic residue neutral and alkali substance, mesh structural porous gel can be formed, the mechanical strength of formed coke is increased
And water proofing property.
In addition, the present invention also provides a kind of formed coke preparation method based on complex biological matter binder, feature exists
In including the following steps：
Step 1：By Sunflower Stalk crushed after being dried, by saturation Ca (OH)2Solution is mixed with the Sunflower Stalk after crushing, and is being stirred
Mix, heat under conditions of hydrolysis process certain time, after press filtration drying can obtain Sunflower Stalk hydrolytic residue.
Step 2：Semicoke is crushed, its grain size is not more than 3mm after crushing.
Step 3：It is dissolved the chitosan in acetic acid solution under heating, chitosan solution is made.
Step 4：By after crushing semicoke and Sunflower Stalk hydrolytic residue, bentonite, sodium carboxymethylcellulose and chitosan it is molten
Liquid stirs evenly after being mixed in a certain ratio, and obtains mixed material and cures 2-5h；
Step 5：The mixed material compression moulding that will be cured in step 3, then at shady and cool ventilation place 4-6h, then
Dry 1-2h, formed coke is obtained after cooling under the conditions of 100 DEG C -105 DEG C.
Compared with prior art, the present invention at least has the advantages that：
1. the present invention uses main component of the biomass Sunflower Stalk hydrolytic residue as formed coke binder, and assists adding swollen
Profit soil, sodium humate and chitosan solution are as function binder.Wherein Sunflower Stalk hydrolytic residue volatile matter it is higher and with compared with
Strong caking property can improve the cold strength and combustibility of formed coke, and sodium humate can improve the cold strength of formed coke, and bentonite can
To improve the calorific intensity and thermal stability of formed coke, chitosan solution has very strong caking property, can significantly improve the cold strong of formed coke
Degree.Coordinated makes the formed coke prepared have preferable cold strength, calorific intensity and combustibility between each component.
2. the present invention between Sunflower Stalk hydrolytic residue, bentonite, sodium humate and chitosan solution each component by cooperateing with
Prepare formed coke, wherein biomass Sunflower Stalk hardly increment type charred ashes point, while bentonite, sodium carboxymethylcellulose and shell
Glycan addition is few, therefore cost of material is low, and the formed coke ash increment of preparation is small.
3. the present invention is by biomass moulding semicoke, the formed coke of production has good burning performance, burning point is low, and not slagging of burning,
There is no black cores, can combine the limited coal resources of China and a large amount of stalk forest the like waste in rural area, real
Existing coal especially low-order coal high-efficiency cleaning utilizes and the recycling and recovery energy of agricultural abandoned biomass.
The features such as 4. formed coke of the present invention has production cost low, and preparation method is simple, nontoxic, environmentally protective.
Using the formed coke for preparing of the present invention, with thermostabilization good, high temperature resistant, with the excellent spy such as higher mechanical strength
Property.After formed coke drying is cooling, measures cold conditions compression strength and be more than 600N/ balls, drop strength is more than 95%, thermal stability
It is good, it is not loose at a high temperature of 1100 DEG C or more.
Specific implementation mode
Below by embodiment, technical scheme of the present invention will be described in further detail.
Embodiment 1
The present embodiment complex biological matter briquette binder is prepared in accordance with the following methods：
Step 1: according to mass parts meter, will respectively be crushed to after 50 parts of semicokes and 15 parts of biomass Sunflower Stalks dryings 3mm with
Under, the biomass Sunflower Stalk by saturated calcium hydroxide solution and after crushing mixes, and is hydrolyzed under agitation, after press filtration
Water content to Sunflower Stalk hydrolytic residue, hydrolytic residue is 35%；Hydrolysising condition is Sunflower Stalk and Ca (OH)2The matter of saturated solution
Amount is than being 1:10, hydrolysis temperature is 70 DEG C, hydrolysis time 3h；
Step 2: the acetic acid solution that 0.01 part of industrial sheet chitosan is dissolved in 3 parts of 0.08mol/L in 80 DEG C is made shell and gathers
Sugar juice；
Step 3：It is obtained being crushed in 1 part of bentonite, 3 parts of sodium carboxymethylcelluloses and 1 part of chitosan solution and step 1
Semi-coke powder and Sunflower Stalk hydrolytic residue (wet slag) mixing after stir evenly, and cure 3h, obtain the curing that water content is 12%
Mixture.
Step 4：By matured mixture compression moulding, pressure 20MPa, pressurize 30s, then by formed coke at shady and cool ventilation
6h, then dry 1h under the conditions of 100 DEG C are placed, formed coke is obtained after cooling.
Embodiment 2
The present embodiment complex biological matter briquette binder is prepared in accordance with the following methods：
Step 1: according to mass parts meter, will respectively be crushed to after 45 parts of semicokes and 5 parts of biomass Sunflower Stalks dryings 3mm with
Under, the biomass Sunflower Stalk by saturated calcium hydroxide solution and after crushing mixes, and is hydrolyzed under agitation, after press filtration
Water content to Sunflower Stalk hydrolytic residue, hydrolytic residue is 40%；Hydrolysising condition is Sunflower Stalk and Ca (OH)2The matter of saturated solution
Amount is than being 1:8, hydrolysis temperature is 90 DEG C, hydrolysis time 5h；
Step 2: the acetic acid solution that 0.04 part of industrial sheet chitosan is dissolved in 4 parts of 0.12mol/L in 80 DEG C is made shell and gathers
Sugar juice；
Step 3：It is obtained being crushed in 3 parts of bentonites, 1 part of sodium carboxymethylcellulose and 4 parts of chitosan solutions and step 1
Semi-coke powder and Sunflower Stalk hydrolytic residue (wet slag) mixing after stir evenly, and cure 2h, obtain the curing that water content is 10%
Mixture.
Step 4：By the mixture compression moulding of curing, pressure 35MPa, pressurize 50s, then by formed coke in shady and cool ventilation
4h, then the dry 2h at 105 DEG C place in place, and formed coke is obtained after cooling.
Embodiment 3
The present embodiment complex biological matter briquette binder is prepared in accordance with the following methods：
Step 1: according to mass parts meter, it will be crushed to 3mm respectively after 55 parts of semicokes and 12.5 parts of biomass Sunflower Stalk dryings
Hereinafter, the biomass Sunflower Stalk by saturated calcium hydroxide solution and after crushing mixes, it is hydrolyzed under agitation, after press filtration
Sunflower Stalk hydrolytic residue is obtained, the water content of hydrolytic residue is 40%；Hydrolysising condition is Sunflower Stalk and Ca (OH)2Saturated solution
Mass ratio is 1:12, hydrolysis temperature is 100 DEG C, hydrolysis time 2h；
Step 2: chitosan solution is made in the acetic acid solution that 0.03 part of chitosan is dissolved in 1 part of 0.1mol/L in 80 DEG C；
Step 3：It will be crushed in 2.5 parts of bentonites, 2.5 parts of sodium carboxymethylcelluloses and 3 parts of chitosan solutions and step 1
It is stirred evenly after obtained semi-coke powder and Sunflower Stalk hydrolytic residue (wet slag) mixing, and cures 5h, it is 15% to obtain water content
Matured mixture.
Step 4：By the mixture compression moulding of curing, pressure 30MPa, pressurize 60s, then by formed coke in shady and cool ventilation
5h, then the dry 1.5h at 103 DEG C place in place, and formed coke is obtained after cooling.
Formed coke prepared by the present invention, with thermostabilization good, high temperature resistant, with good characteristics such as higher mechanical strengths.It waits for
After formed coke drying is cooling, measuring cold conditions compression strength and be more than 600N/ balls, drop strength is more than 95%, and thermal stability is good,
It is not loose at a high temperature of 1100 DEG C or more.
Claims (8)
1. a kind of formed coke based on complex biological matter binder, which is characterized in that include the raw material of following mass parts：Semicoke
45-55 parts, 5-15 parts of biomass, 1-3 parts of bentonite, 1-4 parts of 1-3 parts of sodium carboxymethylcellulose and chitosan solution.
2. a kind of formed coke based on complex biological matter binder according to claim 1, which is characterized in that biomass is
Sunflower Stalk is at Ca (OH)2The residue for hydrolyzing in saturated solution and then being obtained through press filtration.
3. a kind of formed coke based on complex biological matter binder according to claim 1, which is characterized in that the semicoke
The semicoke that low temperature pyrogenation obtains in being used for middle low rank coal.
4. a kind of formed coke based on complex biological matter binder according to claim 1, which is characterized in that chitosan is molten
Liquid is to be dissolved in 1-4 parts of a concentration of 0.08-0.12mol/L acetic acid solutions by 0.01-0.04 parts of industrial sheet chitosans of mass fraction
The viscous liquid of middle formation.
5. a kind of formed coke based on complex biological matter binder according to claim 2, which is characterized in that press filtration obtains
The water content of residue is 30-40%.
6. a kind of preparation method based on complex biological matter binder formed coke, which is characterized in that include the following steps：
Step 1：By Sunflower Stalk crushed after being dried to 3mm hereinafter, by Sunflower Stalk and saturation Ca (OH)2Solution in mass ratio 1:8-1:
12 mixing obtain Sunflower Stalk hydrolytic residue in 70-100 DEG C of hydrolysis process 2-5h under stirring after press filtration；
Step 2：Semicoke is crushed, its grain size is not more than 3mm after crushing；
Step 3：It is molten that industrial sheet chitosan is dissolved in a concentration of 0.08-0.12mol/L acetic acid solutions obtained chitosan in 80 DEG C
Liquid；
Step 4：In parts by mass, by 5-15 parts of Sunflower Stalk hydrolytic residue, 1-3 parts of bentonite, 1-3 parts of sodium carboxymethylcellulose,
In step 3 it is obtained chitosan solution 1-4 parts in step 2 crush after 45-55 parts of semicoke mix after be uniformly mixing to obtain
Mixed material, and cure 2-5h and obtain matured mixture；
Step 5：By the obtained matured mixture compression moulding in step 4, pressure 20-35MPa, pressurize 30-60s, then
4-6h, then dry 1-2h under the conditions of 100 DEG C -105 DEG C are placed at shady and cool ventilation, and formed coke is obtained after cooling.
7. a kind of preparation method based on complex biological matter binder formed coke according to claim 6, which is characterized in that
The water content of mixed material is 12-15% in step 4.
8. a kind of preparation method based on complex biological matter binder formed coke according to claim 6, which is characterized in that
In the step 3, according to the mass fraction, 0.01-0.04 parts of industrial sheet chitosan, 1-4 parts of acetic acid solution.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111054310A (en) * | 2020-01-06 | 2020-04-24 | 西安建筑科技大学 | Active coke for flue gas desulfurization and preparation method thereof |
| CN111394147A (en) * | 2020-03-30 | 2020-07-10 | 西安交通大学 | Modified wheat straw-semi-coke clean briquette and preparation method thereof |
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| CN106010720A (en) * | 2016-07-21 | 2016-10-12 | 北京神雾环境能源科技集团股份有限公司 | Method for forming semi coke |
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| US20110252701A1 (en) * | 2009-09-29 | 2011-10-20 | David Soane | Systems and methods for recovering fine particles from fluid suspensions for combustion |
| KR101539224B1 (en) * | 2014-08-29 | 2015-07-27 | 동하정보기술 주식회사 | Method for preparing biomass solid refuse fuel |
| CN104877727A (en) * | 2015-05-20 | 2015-09-02 | 陕西煤业化工技术研究院有限责任公司 | Composite biomass briquette adhesive, and preparation method and application thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111054310A (en) * | 2020-01-06 | 2020-04-24 | 西安建筑科技大学 | Active coke for flue gas desulfurization and preparation method thereof |
| CN111394147A (en) * | 2020-03-30 | 2020-07-10 | 西安交通大学 | Modified wheat straw-semi-coke clean briquette and preparation method thereof |
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Application publication date: 20181109 |