本文選題：干熄焦 + 除塵灰��； 參考：《華北理工大學(xué)》2017年碩士論文

【摘要】：近年來(lái),隨著技術(shù)的不斷革新,高爐煉鐵的生產(chǎn)規(guī)模不斷的擴(kuò)大,伴隨著生鐵產(chǎn)量的進(jìn)一步提高,煉鐵企業(yè)對(duì)于焦炭的需求量也逐步增加。焦化廠對(duì)于逐步提高的生產(chǎn)壓力,也進(jìn)行了技術(shù)革新,采用了干熄焦技術(shù)。干熄焦除塵灰是煉焦及焦炭應(yīng)用過(guò)程中產(chǎn)生的粉塵,不僅污染環(huán)境,而且回收后難以處理。由于其顆粒比較細(xì),如果處理不及時(shí),長(zhǎng)期存放不僅會(huì)大面積的占用庫(kù)房等存放場(chǎng)地,而且還會(huì)對(duì)廠區(qū)以及附近居民小區(qū)等生活場(chǎng)所造成很大的污染。本文采用冷固球團(tuán)技術(shù)對(duì)干熄焦除塵灰進(jìn)行冷固造球,使顆粒較細(xì)的除塵灰粒徑增大變成1~3 mm的球團(tuán),然后將其添加在燒結(jié)用的固體燃料中用于產(chǎn)品燒結(jié)。這樣既避免了環(huán)境污染,也避免了燒結(jié)過(guò)程由于粒度過(guò)細(xì)而被氣流抽走,降低了燒結(jié)礦固體燃料的消耗和生產(chǎn)成本。通過(guò)單因素實(shí)驗(yàn)探討粘結(jié)劑種類對(duì)球團(tuán)性能的影響,通過(guò)正交實(shí)驗(yàn)法確定干熄焦除塵灰制備球團(tuán)的適宜的粘結(jié)劑種類及用量。研究結(jié)果表明,單獨(dú)使用膨潤(rùn)土做粘結(jié)劑,且配比摻量的質(zhì)量分?jǐn)?shù)為7%時(shí)球團(tuán)的性能最好。同時(shí),經(jīng)試驗(yàn)檢測(cè)結(jié)果發(fā)現(xiàn)干熄焦除塵灰的化學(xué)組成成分及粒度與高爐噴吹用無(wú)煙煤相近。因此,本文還對(duì)干熄焦除塵灰應(yīng)用于高爐噴吹技術(shù)進(jìn)行研究。對(duì)干熄焦除塵灰及與其它種類的煤粉混合后形成的混煤的可磨性、反應(yīng)性、燃燒性及著火點(diǎn)進(jìn)行一系列的試驗(yàn)研究。在分析干熄焦除塵灰應(yīng)用于高爐噴吹的性能基礎(chǔ)上,給出了干熄焦除塵灰替代無(wú)煙煤來(lái)進(jìn)行高爐噴吹的最佳比例以及高爐噴吹干熄焦除塵灰的關(guān)鍵性技術(shù)。研究結(jié)果表明,干熄焦除塵灰取代無(wú)煙煤的質(zhì)量分?jǐn)?shù)為2%的時(shí)候,配制形成的混煤用作高爐噴吹效果最佳。
[Abstract]:In recent years, with the continuous innovation of technology, the production scale of blast furnace ironmaking continues to expand, along with the further improvement of pig iron production, the demand for coke in ironmaking enterprises is also gradually increasing. Coking plant for the gradual increase in production pressure, also carried out technical innovation, the use of dry-quenching technology. Dust removal from dry quenching coke is a kind of dust produced in coke making and coke application, which not only pollutes the environment, but also is difficult to deal with after recovery. Because of its fine particles, if not dealt with in time, long-term storage will not only occupy a large area of storage space, but also will cause a lot of pollution to the factory area and living places such as nearby residential areas. In this paper, cold solid pelletizing technology is used to make dry quench coke dust pellets. The fine dust removal particles are increased to 1 ~ 3 mm pellets, and then added to the solid fuel for sintering. This not only avoids the environmental pollution, but also avoids that the sintering process is sucked out by air because of too fine granularity, thus reducing the consumption and production cost of sinter solid fuel. The effect of binder on pellet performance was investigated by single factor experiment. The suitable binder and dosage of binder were determined by orthogonal test for the preparation of pellets from dry quenched coke dust ash. The results show that when bentonite is used as binder alone and the mass fraction of bentonite is 7, the pellets have the best properties. At the same time, it is found that the chemical composition and particle size of dry quenched coke ash are similar to those of blast furnace injection anthracite. Therefore, the application of dry-quenching coke dust to blast furnace injection technology is also studied in this paper. The grindability, reactivity, combustibility and ignition point of dry quenched coke dust and coal mixed with other kinds of pulverized coal were studied in a series of experiments. Based on the analysis of the performance of dry quenching coke dust removal used in blast furnace injection, the optimum proportion of dry quenching coke dust removal to replace anthracite for blast furnace injection and the key technology of blast furnace dust removal by dry quenching dust removal are given. The results show that when the mass fraction of anthracite is 2%, the mixed coal is the best for blast furnace injection.
【學(xué)位授予單位】：華北理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：X784

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