【摘要】：中國在經(jīng)濟(jì)獲得巨大成就的同時(shí),付出了資源不斷匱乏和環(huán)境受到不同程度的污染為回報(bào)。近年來,石油化工行業(yè)已通過開展節(jié)能技術(shù)改造,加強(qiáng)綜合管理等措施,不斷地提升自身的競爭力。伴熱在化工裝置中具有重要地位,介質(zhì)輸送和儲存,其溫度因?yàn)樯岫a(chǎn)生降溫,降溫使物料的粘度加大。對于易結(jié)晶的物料有可能使物料產(chǎn)生結(jié)晶,最終造成物料的輸送發(fā)生問題,當(dāng)物料結(jié)晶嚴(yán)重時(shí)會造成管道系統(tǒng)堵塞,為了避免這種情況的發(fā)生,就必須及時(shí)補(bǔ)充系統(tǒng)散失的熱量,對系統(tǒng)進(jìn)行不間斷的加熱�；ぱb置中伴熱方式主要伴熱介質(zhì)有蒸汽,電,熱水,熱油等,方式有外管伴熱,夾套伴熱,等,如何選擇伴熱介質(zhì),要通過對物料管線的具體研究,從溫度,介質(zhì),及管線布置復(fù)雜狀況來選擇,伴熱的方式,及保溫等也需要合理的規(guī)劃,不斷的研究新的設(shè)計(jì)方案,已達(dá)到符合國家要求,及節(jié)約能源的目的。本論文源自作者參與設(shè)計(jì)的一套化工裝置,但隨著國家節(jié)能政策的不斷深化,設(shè)計(jì)中的伴熱系統(tǒng)已不能滿足企業(yè)節(jié)能的要求,運(yùn)行過程中出現(xiàn)疏水閥泄漏,冷凝液無法回收,造成大量的浪費(fèi)。本文以節(jié)能,減排為目的,對整個(gè)裝置進(jìn)行優(yōu)化設(shè)計(jì),從伴熱介質(zhì),伴熱方式,保溫材料及全局布置等方面優(yōu)化了裝置的伴熱設(shè)計(jì)。通過對蒸汽伴熱與熱水伴熱的研究,從可行性,散熱損失,蒸汽耗用量與熱水耗用量的對比,提出了部分蒸汽伴熱改為熱水伴熱的優(yōu)化方案；對于部分復(fù)雜管路管線也重新設(shè)計(jì)并以電伴熱代替蒸汽伴熱的方案,進(jìn)行優(yōu)化；本文還對蒸汽供給系統(tǒng)進(jìn)行了優(yōu)化研究,并重新設(shè)計(jì)蒸汽供熱伴熱部分,利用3D軟件進(jìn)行仿真模擬,出圖,檢查碰撞,生成材料表,實(shí)現(xiàn)了蒸汽伴熱系統(tǒng)優(yōu)化目標(biāo)；達(dá)到企業(yè)節(jié)能,環(huán)保,增效的目的。在絕熱保溫的設(shè)計(jì)方面,由于傳統(tǒng)的保溫外殼多為不銹鋼,鋁皮,鐵皮等,易腐蝕,容易變形,使用一段時(shí)間后容易開裂,生銹等,本文采用新型保溫外殼來代替原來的外殼,材質(zhì)為PVC,輕,耐腐蝕,性價(jià)比高,為絕熱層材料提供有效,便捷,經(jīng)濟(jì),美觀的保護(hù)。
[Abstract]:China's economic success has been matched by a lack of resources and varying levels of environmental pollution. In recent years, the petrochemical industry has continuously improved its competitiveness through the measures of energy saving technology transformation and comprehensive management. Heat tracing plays an important role in chemical plant. When the medium is transported and stored, the temperature decreases and the viscosity of the material increases. For materials that are easy to crystallize, it is possible to crystallize the material and eventually cause material transportation problems. When the material crystallizes seriously, it will cause blockage of the pipeline system, in order to avoid this kind of situation, The system must be replenished in time for continuous heating. The main heat tracing media in chemical plant are steam, electricity, hot water, hot oil, etc. There are outer tube heat tracing, jacket heat tracing, and so on. How to select the heat tracing medium, through the specific study of the material pipeline, from the temperature, the medium, etc. And the pipeline layout complex condition to choose, the heat tracing way, and the insulation and so on also needs the reasonable plan, unceasingly studies the new design plan, has reached the goal which conforms to the national request, and saves the energy. This paper originates from a set of chemical plant designed by the author, but with the deepening of the national energy saving policy, the heat tracing system in the design can no longer meet the energy saving requirements of the enterprise, the leakage of the trap appears in the operation process, and the condensate cannot be recovered. Cause a great deal of waste. In order to save energy and reduce emissions, this paper optimizes the heat tracing design of the whole plant from the aspects of heat tracing medium, heat tracing mode, insulation material and global arrangement, etc. Based on the study of steam tracing and hot water tracing, from the feasibility, heat loss, steam consumption and hot water consumption, the optimization scheme of partial steam heat tracing to hot water heat tracing is put forward. The scheme of redesigning and replacing steam heat with electric heat tracing is optimized for some complex pipeline. In this paper, the optimization of steam supply system is studied, and the heat tracing part of steam heating is redesigned. The optimization goal of steam heat tracing system is realized by using 3D software to simulate, map out, check collision, generate material table and realize the optimization goal of steam heat tracing system. To achieve the enterprise energy conservation, environmental protection, efficiency purposes. In the design of adiabatic insulation, because the traditional heat preservation shell is mostly stainless steel, aluminum, iron, etc., it is easy to corrode and deform, it is easy to crack and rust after a period of time. In this paper, a new thermal insulation shell is used to replace the original shell. PVC, light material, corrosion resistance, high cost-performance, for insulation material to provide effective, convenient, economic, beautiful protection.
【學(xué)位授予單位】：北京化工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：TQ051.5

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