MTG工藝危險(xiǎn)后果模型改進(jìn)和泡沫消防適應(yīng)性研究
發(fā)布時(shí)間：2017-12-31 08:12
本文關(guān)鍵詞：MTG工藝危險(xiǎn)后果模型改進(jìn)和泡沫消防適應(yīng)性研究 出處：《西南石油大學(xué)》2016年碩士論文 論文類型：學(xué)位論文
更多相關(guān)文章： MTG工藝 半球形擴(kuò)散模型 噴射火 蒸氣云爆炸 儲(chǔ)罐爆炸模型 池火災(zāi) BLEVE火球 碎片沖擊 氮?dú)馀菽?/b>
【摘要】：甲醇制汽油(MTG)工藝由于具有產(chǎn)品質(zhì)量好、經(jīng)濟(jì)效益高、環(huán)保等優(yōu)勢(shì),受到了廣泛關(guān)注,但其固有的危險(xiǎn)特性又限制了MTG的發(fā)展。本文以MTG工藝和裝置的泄漏、火災(zāi)和爆炸等危險(xiǎn)性為研究對(duì)象,對(duì)事故后果進(jìn)行模擬。模擬過程中,從理論上改進(jìn)了泄漏、液池、蒸發(fā)和擴(kuò)散模型；噴射火模型；蒸氣云爆炸沖擊波超壓和熱輻射模型；儲(chǔ)罐化學(xué)爆炸和物理爆炸模型；池火災(zāi)模型；BLEVE沸騰液體擴(kuò)展蒸氣云爆炸模型；碎片沖擊模型。通過模擬,改進(jìn)后的模型對(duì)評(píng)估事故后果和指導(dǎo)消防設(shè)計(jì)具有重要意義。在模擬事故后果傷害的基礎(chǔ)上,本文探討了空氣泡沫消防的缺陷,提出在大型儲(chǔ)罐和廠區(qū)運(yùn)用氮?dú)夤呐菖菽に�。初步設(shè)計(jì)氮?dú)馀菽瓬缁鹣到y(tǒng)和氮?dú)馀菽瓏婌F滅火系統(tǒng)。對(duì)MTG全廠的消防系統(tǒng)進(jìn)行方案設(shè)計(jì),包括空分制氮；氮在管內(nèi)的流動(dòng)；MTG氮?dú)夤呐菖菽瓬缁鹣到y(tǒng)；LPG球罐氮?dú)馀菽瓏婌F滅火裝置；全廠消防冷卻水系統(tǒng)。進(jìn)行全廠的泡沫消防系統(tǒng)、消防冷卻水系統(tǒng)詳細(xì)設(shè)計(jì)和水力計(jì)算,以及事故排水系統(tǒng)和消防報(bào)警系統(tǒng)設(shè)計(jì)通過消防設(shè)計(jì)可知,氮?dú)夤呐菖菽瓬缁鹣到y(tǒng)和氮?dú)夤呐輫婌F滅火系統(tǒng)在大型儲(chǔ)罐上具有理論可行性和安全保障性。對(duì)于整個(gè)廠區(qū),利用空分制氮可滿足消防滅火時(shí)的氮?dú)庑枰�。文章設(shè)計(jì)了消防的不同組合形式,為廠區(qū)的消防提供了多種設(shè)計(jì)選擇,可同時(shí)保障經(jīng)濟(jì)性和使用安全性。
[Abstract]:Because of the advantages of good product quality, high economic benefit and environmental protection, the methanol gasoline making MTG process has received extensive attention. However, its inherent hazard characteristics limit the development of MTG. In this paper, the leakage, fire and explosion of MTG process and device are studied, and the accident consequences are simulated. The model of leakage, liquid tank, evaporation and diffusion is improved theoretically. Jet fire model; Shock wave overpressure and thermal radiation model of vapor cloud explosion; Model of chemical explosion and physical explosion of storage tank; Pool fire model; BLEVE boiling liquid expanded vapor cloud explosion model; Debris impact model. Through simulation, the improved model is of great significance for evaluating accident consequences and guiding fire protection design. Based on the simulation of accident consequence damage, this paper discusses the defects of air foam fire fighting. This paper puts forward the application of nitrogen bubble foam technology in large storage tanks and plant areas. The preliminary design of nitrogen foam fire extinguishing system and nitrogen foam spray fire extinguishing system is carried out. The scheme design of the fire fighting system of MTG plant includes nitrogen production by air separation. The flow of nitrogen in the tube; MTG nitrogen bubble foam fire extinguishing system; LPG spherical tank nitrogen foam spray extinguishing device; The detailed design and hydraulic calculation of the fire fighting cooling water system, as well as the design of the accident drainage system and the fire alarm system are known through the fire control design. The nitrogen bubble foam fire extinguishing system and the nitrogen bubble spray fire extinguishing system are theoretically feasible and safe in large storage tanks. Nitrogen production by air separation can meet the needs of nitrogen in fire extinguishing. Different combination forms of fire fighting are designed in this paper, which can provide various design options for fire fighting in factory area, and can guarantee both economy and safety in use at the same time.
【學(xué)位授予單位】：西南石油大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2016
【分類號(hào)】：TQ517;TQ086
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本文編號(hào)：1358919
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