CN102453488B - Environmental protection type economic formulation of coke strength enhancer of water-quenched coke - Google Patents
Environmental protection type economic formulation of coke strength enhancer of water-quenched coke Download PDFInfo
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- CN102453488B CN102453488B CN201110234816.7A CN201110234816A CN102453488B CN 102453488 B CN102453488 B CN 102453488B CN 201110234816 A CN201110234816 A CN 201110234816A CN 102453488 B CN102453488 B CN 102453488B
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Abstract
The present invention relates to an environmental protection type economic formulation of a coke strength enhancer of water-quenched coke, and belongs to the technical field of coking. The economic formulation comprises a mixture, wherein the mixture is formed by uniformly mixing a surfactant source, a boron source and water according to weight percentages. The economic formulation of the present invention is dissolved in water for quenching the coke, and is mixed and prepared into a dilute aqueous solution with the concentration of 0.01-1%, wherein the prepared dilute aqueous solution can be provided for quenching the coke. When the aqueous solution for quenching the coke is added with the environmental protection type base agent of the coke strength enhancer of the water-quenched coke to quench the coke, the air bubbles are generated by the surfactant source, such that the specific surface area of the coke can be increased, the dust can be effectively adsorbed, the reactivity of the coke can be reduced, the strength of the coke after the reaction can be improved, the moisture content of the coke can be reduced, and the discharge amount of the harmful steam can be substantially reduced.
Description
Technical field
The present invention relates to a kind of environmental protection type economic formulation of coke strength enhancer of water-quenched coke, belong to coking technology field.
Background technology
The extinguishing technique that coke production is follow-up, requires to make red-hot coke fast cooling, is convenient to transport and stores.Quenching technology is divided into two kinds of dry method and wet methods, and dry coke quenching has the effect that improves coke quality, environmental protection, recovery heat energy, but due to investment and working cost high, in the short period of time, be also difficult to popularization.Wet putting out is the quenching technology generally adopting at present, the advantage of wet quenching is that investment and process cost are low, management is simple, shortcoming is after quenching, to reduce coke strenth and moisture is high and unstable, red-hot coke sprays in quick process of cooling and produces the water vapour that is entrained with a large amount of dust, phenol, sulfide etc. at water simultaneously, causes environmental pollution and thermal pollution.Along with the maximization of blast furnace and the raising of combustion intensity, the specification of quality of blast furnace STRENGTH ON COKE is more and more higher, and Coking Coal Quality has downtrending year by year, there is larger fluctuation in coal, the quality of coking coal, the requirement that the coke quality of producing is difficult to meet large blast furnace strengthening smelting, further improves coal ejection ratio, high-quality caking coal contradiction fewer and feweri and that coke quality requirement is more and more higher is day by day serious.And the global pay attention to day by day to environment protection, makes coal chemical enterprise face immense pressure, has jeopardized the Sustainable development of coking and metallurgy industry.At present wet put out to have in technique still adopt traditional water quenching, there is above-mentioned problem demanding prompt solution; Have the passivator technology of adopting, postreaction strength of coke is improved, but environmental influence is not improved, and especially blast furnace effect is not obvious, and coke ratio obviously do not reduce; Useful air film coke quenching agent technology, environmental influence is improved, coke quality is improved, but exists coke cold and hot index increase rate less, and blast furnace effect is unstable, the problem that application cost is high.
Summary of the invention
The object of the invention is, for overcoming above-mentioned the deficiencies in the prior art part, provides a kind of environmental protection type economic formulation of coke strength enhancer of water-quenched coke, and this economic formulation comprises: the mixture that surfactant source, boron source, water mix by weight percentage.This formulation is dissolved in in coke quenching water, to be hybridly prepared into concentration be that the dilute aqueous soln of 0.01-1% gets final product quenching.While adding the coke quenching water solution quenching of the basic agent of a kind of environment-friendly type water quenching coke strenth toughener, the bubble that surfactant source produces, can increase coke ratio surface-area, effectively adsorb dust, reduce the reactivity of coke, improve postreaction strength of coke, reduce coke water ratio, significantly reduce harmful discharge of steam amount.
The present invention realizes with following technical scheme: a kind of environmental protection type economic formulation of coke strength enhancer of water-quenched coke, is characterized in that: this economic formulation comprises: the mixture that surfactant source 20-80%, boron source 20-80% mix by weight percentage.
Described surfactant source comprises: Witco 1298 Soft Acid and sodium salt, cetyl trimethylammonium bromide, sodium lauryl sulphate; Described boron source comprises: boric acid, boron cash, borax.The raw material of environmental protection type economic formulation of coke strength enhancer of water-quenched coke is optional one in above-mentioned surfactant source, boron source.
Preferably, environmental protection type economic formulation of coke strength enhancer of water-quenched coke comprises: surfactant source 40-60%, boron source 40-60% mix by weight percentage.。
The using method of environmental protection type economic formulation of coke strength enhancer of water-quenched coke is, this product is dissolved in in coke quenching water, to be hybridly prepared into concentration be that the dilute aqueous soln of 0.01-1% gets final product quenching.While adding a kind of coke quenching water solution quenching of water quenching coke surface toughener economic formulation, the bubble that surfactant source produces on the one hand, can increase coke ratio surface-area, effectively adsorbs dust, reduces the quantity discharged of harmful steam; Boron source in coke quenching water solution, by coke surface rapid permeability, forms and fills the boronation film that adds coke surface duct on the other hand, strengthening coke surface intensity.Thereby significantly reduce environmental pollution and thermal pollution that coke wet quenching causes, effectively improve the post-reaction strength of coke, meet the requirement of modern blast furnace and strengthening smelting Coke Quality.
Advantage of the present invention is: the coke quenching water solution quenching of using environment-friendly type water quenching coke strenth toughener economic formulation, and coke reactivity reduces 2-7%; Postreaction strength of coke improves 4-8%; Dust discharge amount reduces more than 95%; Discharge of steam amount obviously reduces; Coke water ratio reduces.Realize the reactivity of remarkable reduction coke, improved postreaction strength of coke, reduced coke water ratio, significantly reduced harmful discharge of steam amount, realized and met the requirement of modern blast furnace strengthening smelting Coke Quality and the object of energy-saving and emission-reduction.
Embodiment
Embodiment 1,
Cetyl trimethylammonium bromide 25%, boric acid 75% mix by 7.5g total weight percent vigorous stirring, pour in the watering can that 5L water is housed, for quenching.
According in GB/T 4000-83 " coke reactivity and post-reaction strength test method " " taking and preparation method of sample ", prepare by hand focal sphere.A collection of focal sphere is mixed, get focal sphere (mass analysis the results are shown in Table 1) by 500g.
Table 1 Quality Analysis of Coke result
500g focal sphere is put into destructive distillation device and carry out heat, after heating, take out focal sphere, with deployed aqueous solution spray quenching, quenching sound, discharge of steam, the burnt situation of drying in the air in observation quenching process, the dust in recovered steam.Focal sphere sample after quenching is dried, be made for reactivity and post-reaction strength and measure.
According to GB/T 4000-2008 " coke reactivity and post-reaction strength test method ", detect different quenching modes and process reactivity and the post-reaction strength (coke reactivity and post-reaction strength data are in table 2) of rear focal sphere.
Table 2 coke reactivity and post-reaction strength data
Embodiment 2,
Cetyl trimethylammonium bromide 50%, boric acid 50% mix by 7.5g total weight percent vigorous stirring, pour in the watering can that 5L water is housed, for quenching.
According in GB/T 4000-83 " coke reactivity and post-reaction strength test method " " taking and preparation method of sample ", prepare by hand focal sphere.A collection of focal sphere is mixed, get focal sphere (mass analysis the results are shown in Table 3) by 500g.
Table 3 Quality Analysis of Coke result
500g focal sphere is put into destructive distillation device and carry out heat, after heating, take out focal sphere, with deployed aqueous solution spray quenching, quenching sound, discharge of steam, the burnt situation of drying in the air in observation quenching process, the dust in recovered steam.Focal sphere sample after quenching is dried, be made for reactivity and post-reaction strength and measure.
According to GB/T 4000-2008 " coke reactivity and post-reaction strength test method ", detect passivation place
Reactivity and the post-reaction strength (coke reactivity and post-reaction strength data are in table 4) of focal sphere after reason.
Table 4 coke reactivity and post-reaction strength data
Embodiment 3,
Cetyl trimethylammonium bromide 45%, boric acid 55% mix by 7.5g total weight percent vigorous stirring, pour in the watering can that 5L water is housed, for quenching.
According in GB/T 4000-83 " coke reactivity and post-reaction strength test method " " taking and preparation method of sample ", prepare by hand focal sphere.A collection of focal sphere is mixed, get focal sphere (mass analysis the results are shown in Table 5) by 500g.
Table 5 Quality Analysis of Coke result
500g focal sphere is put into destructive distillation device and carry out heat, after heating, take out focal sphere, with deployed aqueous solution spray quenching, quenching sound, discharge of steam situation in observation quenching process, the dust in recovered steam.Focal sphere sample after quenching is dried, be made for reactivity and post-reaction strength and measure.
According to GB/T 4000-2008 " coke reactivity and post-reaction strength test method ", reactivity and the post-reaction strength (coke reactivity and post-reaction strength data are in table 6) of focal sphere after detection Passivation Treatment.
Table 6 coke reactivity and post-reaction strength data
Claims (1)
1. an environmental protection type economic formulation of coke strength enhancer of water-quenched coke, is characterized in that: this economic formulation comprises: the mixture that boric acid 20-80%, cetyl trimethylammonium bromide 20-80% mix by weight percentage.
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| CN201110234816.7A CN102453488B (en) | 2011-08-10 | 2011-08-10 | Environmental protection type economic formulation of coke strength enhancer of water-quenched coke |
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| CN102453488A CN102453488A (en) | 2012-05-16 |
| CN102453488B true CN102453488B (en) | 2014-07-23 |
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| CN102786963A (en) * | 2012-08-02 | 2012-11-21 | 武钢集团昆明钢铁股份有限公司 | Method for improving high-temperature metallurgical property of coke |
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| CN102010722A (en) * | 2009-09-07 | 2011-04-13 | 王暾 | Foam coke-quenching method |
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