【摘要】：相變加熱爐是從上世紀90年代逐步發(fā)展并應用于工業(yè)和民用的一種高效節(jié)能的新型加熱設備,具有高效、安全、體積小等優(yōu)勢,目前已成為油氣集輸領(lǐng)域的主力加熱爐品種。對于應用在油田的加熱爐,其必須要適應油田各種惡劣多變的工況以及復雜多樣的被加熱介質(zhì)。近年來,隨著油氣集輸工藝的不斷變化和創(chuàng)新,相變加熱爐在油田應用中逐漸出現(xiàn)了熱負荷跨度大、大流量下小壓降的要求、三元區(qū)塊應用中結(jié)垢嚴重影響換熱等不適應的問題,這些問題嚴重影響相變加熱爐在油田的應用。本文的研究旨在提高相變加熱爐在油田應用的工況適應能力。本文通過對相變加熱爐的輻射傳熱、對流傳熱、排煙溫度及煙氣露點溫度、螺紋煙管傳熱系數(shù)等分析,確定了影響相變加熱爐熱力系統(tǒng)的關(guān)鍵參數(shù);通過對沸騰和凝結(jié)換熱系數(shù)、飽和蒸汽壓力、污垢系數(shù)等分析,確定了影響加熱爐換熱系統(tǒng)的關(guān)鍵參數(shù);通過開展污垢生長規(guī)律和熱阻模擬試驗及對實驗數(shù)據(jù)的分析和總結(jié),掌握了溫度、流速、介質(zhì)等條件對加熱爐換熱的影響。在明確了熱力系統(tǒng)、換熱系統(tǒng)、介質(zhì)適應性的各關(guān)鍵影響因素后,結(jié)合相變加熱爐在油田應用中存在的實際問題,有針對性的提出使相變加熱爐適應各種惡劣工況的對策,研發(fā)了適應熱負荷跨度大的雙熱力系統(tǒng)相變加熱爐、適應大流量的分體相變加熱爐、適應易結(jié)垢介質(zhì)的在線除垢式加熱爐。通過這些對策提高了相變加熱爐在油田應用的工況適應能力。
[Abstract]:Phase change heating furnace is a new type of heating equipment with high efficiency and energy saving which has been developed and applied in industry and civil use since 1990s. It has the advantages of high efficiency, safety and small volume, and has become the main heating furnace variety in the field of oil and gas gathering and transportation. For the reheating furnace used in oil field, it must adapt to all kinds of bad and changeable working conditions and complex and diverse heating medium. In recent years, with the continuous change and innovation of oil and gas gathering and transportation technology, the requirement of large heat load span and small pressure drop under large flow rate has gradually appeared in the application of phase change heating furnace in oil field. In the application of ternary block, scaling seriously affects the heat transfer and other unsuitable problems, and these problems seriously affect the application of phase change heating furnace in oil field. The purpose of this paper is to improve the adaptability of phase change furnace in oil field. Based on the analysis of radiation heat transfer, convection heat transfer, exhaust gas temperature and flue gas dew point temperature, and heat transfer coefficient of threaded pipe, the key parameters affecting the thermal system of the phase change furnace are determined in this paper. Through the analysis of boiling and condensation heat transfer coefficient, saturated steam pressure, fouling coefficient and so on, the key parameters affecting the heat transfer system of heating furnace are determined, and the fouling growth law and thermal resistance simulation test are carried out and the experimental data are analyzed and summarized. The influence of temperature, flow rate and medium on the heat transfer of heating furnace has been grasped. After defining the key factors of thermal system, heat transfer system and medium adaptability, combined with the practical problems existing in the application of phase change heating furnace in oil field, the countermeasures to adapt phase change heating furnace to various bad working conditions are put forward. A double thermal system phase change heating furnace adapted to large heat load span, a split phase change heating furnace with large flow rate, and an on-line scale removing heating furnace suitable for easy scaling medium are developed. Through these countermeasures, the adaptability of phase change heating furnace applied in oil field is improved.
【學位授予單位】：哈爾濱工業(yè)大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：TE93

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本文編號：2125593