CN103436312A - Composite industrial gasification formed coke binder and preparation method of formed coke - Google Patents
Composite industrial gasification formed coke binder and preparation method of formed coke Download PDFInfo
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- CN103436312A CN103436312A CN201310340332XA CN201310340332A CN103436312A CN 103436312 A CN103436312 A CN 103436312A CN 201310340332X A CN201310340332X A CN 201310340332XA CN 201310340332 A CN201310340332 A CN 201310340332A CN 103436312 A CN103436312 A CN 103436312A
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- coke
- binding agent
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- formed coke
- binder
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Abstract
The invention discloses a composite industrial gasification formed coke binder and a preparation method of formed coke. The preparation method comprises the steps of preparing the composite industrial gasification formed coke binder, adding water to a reaction kettle, heating, adding coal ash, a calcic inorganic substance and a silicious inorganic substance to the reaction kettle, stirring, heating, continuously stirring, adding humic acid and sodium carboxymethylcellulose to the reaction kettle, continuously stirring under the temperature condition, sufficiently and uniformly mixing, obtaining the formed coke binder till a solution is cooled to a room temperature, preparing the composite industrial gasification formed coke, crushing powdered coke, placing the powdered coke and the binder in a tempering kettle, uniformly stirring and mixing, sending a mixture to a roller press, conducting extrusion forming at a normal temperature, drying, cooling, and obtaining the formed coke. According to the binder and the preparation method, the characteristics that the coal ash is cheap and easy to obtain are utilized, so that the cost is lowered; organic and inorganic components of the binder are composited together, so that a binding property is improved; the defects that the powdered coke has no binding property, and is small in plasticity and loose in structure are overcome; and a value of the powdered coke is increased.
Description
Technical field
The present invention relates to the coke breeze field shaping technique, relate in particular to a kind of composite industrial gasified burnt binding agent and prepare the method for formed coke.
Background technology
In the production process of the industries such as metallurgical, chemical industry and calcium carbide, coke is a kind of main raw material, but it needs certain lumpiness while using.Because the coking the ratio of lump coal is relatively low, make the coking cost higher, cause coke price always high.Meanwhile, because the physical strength of coke own is lower, can be broken in the transportation of coke and treating processes, produce the coke breeze (generally below 10 millimeters) of a large amount of small grain size.Although the physical and chemical performance of coke breeze there is no much difference with large lump coke, granularity does not meet the requirement of the industry production techniques such as metallurgy, chemical industry and calcium carbide, causes it directly to utilize.Most enterprises, by the long-term outdoor accumulation of these coke breezes, has caused severe contamination to surrounding enviroment, and the serious harm HUMAN HEALTH.Some Enterprises is used as a large amount of coke breezes as cheap conventional fuel and is used, and it is worth by substantially understate, not only makes the production cost of enterprise raise, and has also caused serious energy dissipation.Therefore, the development of new binding agent, the formed coke that coke breeze is prepared into to excellent property is an effective way that realizes its comprehensive utilization, has great economic benefit and social benefit.
Due to characteristics such as coke breeze have no adhesion, intensity and anti-crushing poor-performing, plasticity is little and structure is comparatively loose, cause its moulding difficulty relatively.Therefore, the coke breeze binding agent that how preparation cost is cheap, processability is good is the technical barrier during formed coke is produced.The formed coke binding agent of current domestic use mainly is divided into these three kinds of organic binder bond, mineral binder bond and compound binding agents.Wherein organic binder bond is most widely used, and raw material is generally coal tar, pitch, polyethylene, humic acids etc.Organic binder cemented performance is good, and the formed coke physical strength of producing is high, but thermal stability is poor and cost is higher.Mineral binder bond mainly contains clay, cement, water glass etc., and its formed coke physical strength of producing is poor, but thermal stability is good.Complex adhesive is that organic binder bond and mineral binder bond are composited, and comprehensively their advantage, maximize favourable factors and minimize unfavourable ones.At present, how to develop high performance complex adhesive and reduce as far as possible the main direction of studying that its production cost is the coke breeze molding adhesive.
Flyash is to receive the thin ash of catching in the flue gas from coal combustion, is mainly derived from coal-burning power plant.Flyash is one of industrial residue that the current discharge capacity of China is larger, nearly more than 300,000,000 ton, the flyash of annual discharge, and increasing year by year.The outdoor accumulation of a large amount of flyash, meeting severe contamination soil, cause the exhausted of land resources and destroy; The meeting polluted-water, cause river to silt up; Can wave with the wind, atmosphere pollution; And the health of the direct harmful to human of meeting.Therefore realize the comprehensive utilization of flyash, turn waste into wealth, to solving environmental pollution and realizing that effective utilization of resource all has very important realistic meaning.Due to the fine coal ash composition and clay similar, therefore can instead of clay as the coke breeze molding adhesive.SiO in flyash
2and Al
2o
3content is higher, can increase the ash fusion point of formed coke when as the gasification formed coke binding agent, makes the unsuitable slagging scorification of coal ash in vapourizing furnace, and in flyash, the CaO of high-content can reduce again molten grey viscosity simultaneously.Therefore, in vapourizing furnace melting ash, because its viscosity is little, can bondingly not be agglomerated into megalump, effectively alleviated the ash erosion in the gasification.In addition, contain the residual carbon of 10% left and right in flyash, as the formed coke binding agent, can effectively increase the carbon content in formed coke.
A kind of using flyash in the binding agent main raw material, turn waste into wealth flyash, for its comprehensive utilization provides a useful approach, avoided flyash as waste on the harm of environment and on the impact of HUMAN HEALTH.In addition, flyash is cheap and easy to get, effectively reduces the production cost of enterprise, can utilize the compound binding agent that its processability is good.
Summary of the invention
The purpose of this invention is to provide a kind of composite industrial gasified burnt binding agent and prepare the method for formed coke, to realize effective utilization of coke breeze resource, and overcoming the defect of current coke breeze molding adhesive, the problem such as high as production cost, adhesive property is poor, prepare the gasification formed coke of excellent property.
To achieve these goals, the present invention is by the following technical solutions:
A kind of composite industrial gasified burnt binding agent, this binding agent is prepared from by the raw material of following mass percent:
Further, described flyash particle diameter is 150-200 μ m, and it forms SiO by following mass fraction raw material
240%-52%, Al
2o
315%-20%, Fe
2o
33%-6%, CaO14%-17%.
Further, described calcic inorganics is lime powder, calcium hydroxide, calcium oxide, calcium chloride, aluminous cement or calcium carbonate.
Further, described siliceous inorganics is water glass, silicon sol, aluminum silicon powder, Sodium Silicofluoride, silicon-dioxide, silicate cement or silicic acid quaternary ammonium powder.
Correspondingly, the present invention and then provided the method for preparing composite industrial gasified Jiao, comprise the steps:
Step 1, prepare composite industrial gasified burnt binding agent
1) getting mass percent is that 65-75% water is placed in reactor, heat up, treat that temperature reaches 50-80 ℃, 6-10% flyash, 5-7% calcic inorganics, the siliceous inorganics of 5-9% are added in reactor, rotating speed with 65-85r/min stirs, treat that temperature rises to 90-100 ℃, continue to stir 50-70min under this temperature condition;
2) 2-6% humic acids and 4-6% Xylo-Mucine are added in this reactor, under 90-100 ℃, continue to keep this rotating speed to stir 60-90min, mentioned component is fully mixed;
3) treat step 2) in solution be cooled to room temperature, make composite industrial gasified burnt binding agent of the present invention;
Step 2, prepare composite industrial gasified Jiao
1) coke breeze that is 81-87% by mass percent is crushed to granularity below 3mm, and itself and the described 13-19% binding agent of step 3) are placed in the kneading pot, stirs 10min, and it is mixed;
2) compound is delivered in the Kun press, be forced into the 25Mpa moulding under normal temperature, drying, obtain described formed coke after cooling.
The present invention has following beneficial effect:
(1) comprehensive utilization that the present invention is flyash provides a useful approach, avoided flyash as waste on the harm of environment and on the impact of HUMAN HEALTH.In addition, flyash is cheap and easy to get, effectively reduces the production cost of enterprise;
(2) this compound binding agent effectively is combined with each other several organic constituents and inorganic component, has realized the complementation between them, maximizes favourable factors and minimizes unfavourable ones, and has improved adhesive property;
(3) the present invention can be used for the coke breeze moulding and prepares gasification formed coke, has overcome the characteristics such as coke breeze no adhesion, plasticity be little, loosely organized, has promoted the value of coke breeze.Be not only applicable to the coke breeze produced in the transportation of coke and shattering process, be equally applicable to the coke breeze generated after pulverized coal pyrolysis;
(4) gasification formed coke of the present invention, with low cost, and the preparation method is simple.
Therefore, binding agent of the present invention has the characteristics such as production cost is low, environmental protection, and the gasification formed coke excellent property of making can replace gasification briquette and the gas coke production starting material as chemical enterprise.Select the fine coal in red building woods colliery, Yulin City Shenmu County, Shaanxi Province, generate coke breeze after pyrolysis, then be prepared into formed coke with binding agent of the present invention, its excellent property, thermostability TS
+ 6>=72%, softening temperature ST>=1300 ℃, cold conditions ultimate compression strength is the 600-700N/ ball, dropping strength is greater than 83%, meets the specification of quality of gasification formed coke.
Embodiment
In order to deepen the understanding of the present invention, below in conjunction with embodiment, the invention will be further described.Following embodiment is the preferred implementation under the prerequisite of technical solution of the present invention, but protection scope of the present invention is not limited to following embodiment.
The present invention prepares composite industrial gasified Jiao's method, and raw material by percentage to the quality, comprises the steps:
Step 1, prepare composite industrial gasified burnt binding agent
1) get 65-75% water and be placed in reactor, heat up, treat that temperature reaches 50-80 ℃, 6-10% flyash, 5-7% calcic inorganics, the siliceous inorganics of 5-9% are added in reactor, rotating speed with 65-85r/min stirs, treat that temperature rises to 90-100 ℃, continue to stir 50-70min under this temperature condition;
2) 2-6% humic acids and 4-6% Xylo-Mucine are added in this reactor, under 90-100 ℃, continue to keep this rotating speed to stir 60-90min, mentioned component is fully mixed;
3) treat step 2) in solution be cooled to room temperature, make composite industrial gasified burnt binding agent of the present invention;
Step 2, prepare composite industrial gasified Jiao
1) coke breeze that is 81-87% by mass fraction is crushed to granularity below 3mm, and itself and the described 13-19% binding agent of step 3) are placed in the kneading pot, stirs 10min, and it is mixed;
2) compound is delivered in the Kun press, be forced into the 25Mpa moulding under normal temperature, drying, obtain described formed coke after cooling.
Above-mentioned flyash particle diameter is 150-200 μ m, and its raw material is by the SiO of mass fraction
240%-52%, Al
2o
315%-20%, Fe
2o
33%-6%, CaO14%-17% form.Above-mentioned calcic inorganics is lime powder, calcium hydroxide, calcium oxide, calcium chloride, aluminous cement or calcium carbonate.Above-mentioned siliceous inorganics is water glass, silicon sol, aluminum silicon powder, Sodium Silicofluoride, silicon-dioxide, silicate cement or silicic acid quaternary ammonium powder.
Below by specific embodiment, preparation method of the present invention is described further.
Embodiment 1
(1) get 65 parts of water and be placed in reactor, heat up, treat that temperature reaches 80 ℃, 10 parts of flyash, 6 parts of lime powders and 7 parts of water glass are added in reactor, with the rotating speed stirring of 85r/min, treat that temperature rises to 100 ℃, continue to stir 70min under this temperature condition;
(2) 6 parts of humic acidss and 6 parts of Xylo-Mucines are added in this reactor, under 100 ℃, continue to keep this rotating speed to stir 90min, these several compositions are fully mixed;
(3) treat that in step (2), solution is cooled to room temperature, make compound gasification formed coke binding agent of the present invention.
(4) coke breeze is crushed to granularity below 3mm, itself and the described binding agent of step (3) are placed in the kneading pot, stir 10min, it is mixed, usage ratio (mass fraction) is: 87 parts of coke breezes, 13 parts of binding agents;
(5) compound is delivered in the Kun press, be forced into the 25Mpa moulding under normal temperature, drying, obtain described formed coke after cooling.
Embodiment 2
(1) get 70 parts of water and be placed in reactor, heat up, treat that temperature reaches 65 ℃, 8 parts of flyash, 7 parts of calcium hydroxides and 9 parts of silicon sol are added in reactor, with the rotating speed stirring of 75r/min, treat that temperature rises to 95 ℃, continue to stir 60min under this temperature condition;
(2) 2 parts of humic acidss and 4 parts of Xylo-Mucines are added in this reactor, under 95 ℃, continue to keep this rotating speed to stir 75min, these several compositions are fully mixed;
(3) treat that in step (2), solution is cooled to room temperature, make compound gasification formed coke binding agent of the present invention.
(4) coke breeze is crushed to granularity below 3mm, itself and the described binding agent of step (3) are placed in the kneading pot, stir 10min, it is mixed, usage ratio (mass fraction) is: 84 parts of coke breezes, 16 parts of binding agents;
(5) compound is delivered in the Kun press, be forced into the 25Mpa moulding under normal temperature, drying, obtain described formed coke after cooling.
Embodiment 3
(1) get 75 parts of water and be placed in reactor, heat up, treat that temperature reaches 50 ℃, 6 parts of flyash, 5 parts of aluminous cements and 5 parts of Sodium Silicofluorides are added in reactor, rotating speed with 65r/min stirs, and treats that temperature rises to 90 ℃, continues to stir 50min under this temperature condition;
(2) 4 parts of humic acidss and 5 parts of Xylo-Mucines are added in this reactor, under 90 ℃, continue to keep this rotating speed to stir 60min, these several compositions are fully mixed;
(3) treat that in step (2), solution is cooled to room temperature, make compound gasification formed coke binding agent of the present invention.
(4) coke breeze is crushed to granularity below 3mm, itself and the described binding agent of step (3) are placed in the kneading pot, stir 10min, it is mixed, usage ratio (mass fraction) is: 81 parts of coke breezes, 19 parts of binding agents;
(5) compound is delivered in the Kun press, be forced into the 25Mpa moulding under normal temperature, drying, obtain described formed coke after cooling.
The above, be only the embodiment that the present invention is directed to the present invention's application, can make those skilled in the art more fully understand the present invention, but not the present invention be done to any restriction.According to technical solution of the present invention, above-described embodiment can be enumerated a lot of examples.Every scope given according to technical solution of the present invention and to any simple modifications and changes made for any of the above embodiments, all belong to the protection domain of technical solution of the present invention.A large amount of experimental results show that the scope proposed at the claims in the present invention book all can reach purpose of the present invention.
Claims (5)
1. a composite industrial gasified burnt binding agent, is characterized in that, this binding agent is prepared from by the raw material of following mass percent:
2. composite industrial gasified burnt binding agent according to claim 1, is characterized in that, described flyash particle diameter is 150-200 μ m, and it forms SiO by following mass fraction raw material
240%-52%, Al
2o
315%-20%, Fe
2o
33%-6%, CaO14%-17%.
3. composite industrial gasified burnt binding agent according to claim 1, is characterized in that, described calcic inorganics is lime powder, calcium hydroxide, calcium oxide, calcium chloride, aluminous cement or calcium carbonate.
4. composite industrial gasified burnt binding agent according to claim 1, is characterized in that, described siliceous inorganics is water glass, silicon sol, aluminum silicon powder, Sodium Silicofluoride, silicon-dioxide, silicate cement or silicic acid quaternary ammonium powder.
5. composite industrial gasified Jiao preparation method, is characterized in that, comprises the steps:
Step 1, prepare composite industrial gasified burnt binding agent
1) getting mass percent is that 65-75% water is placed in reactor, heat up, treat that temperature reaches 50-80 ℃, 6-10% flyash, 5-7% calcic inorganics, the siliceous inorganics of 5-9% are added in reactor, rotating speed with 65-85r/min stirs, treat that temperature rises to 90-100 ℃, continue to stir 50-70min under this temperature condition;
2) 2-6% humic acids and 4-6% Xylo-Mucine are added in this reactor, under 90-100 ℃, continue to keep this rotating speed to stir 60-90min, mentioned component is fully mixed;
3) treat step 2) in solution be cooled to room temperature, make composite industrial gasified burnt binding agent of the present invention;
Step 2, prepare composite industrial gasified Jiao
1) coke breeze that is 81-87% by mass percent is crushed to granularity below 3mm, and itself and the described 13-19% binding agent of step 3) are placed in the kneading pot, stirs 10min, and it is mixed;
2) compound is delivered in the Kun press, be forced into the 25Mpa moulding under normal temperature, drying, obtain described formed coke after cooling.
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| CN114752756A (en) * | 2022-04-21 | 2022-07-15 | 宝武集团环境资源科技有限公司 | Method and production line for treating ferrous metallurgy dust and sludge based on rotary hearth furnace method |
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