化工装置伴热系统设计与优化
发布时间：2018-11-24 08:13
【摘要】：中国在经济获得巨大成就的同时,付出了资源不断匮乏和环境受到不同程度的污染为回报。近年来,石油化工行业已通过开展节能技术改造,加强综合管理等措施,不断地提升自身的竞争力。伴热在化工装置中具有重要地位,介质输送和储存,其温度因为散热而产生降温,降温使物料的粘度加大。对于易结晶的物料有可能使物料产生结晶,最终造成物料的输送发生问题,当物料结晶严重时会造成管道系统堵塞,为了避免这种情况的发生,就必须及时补充系统散失的热量,对系统进行不间断的加热。化工装置中伴热方式主要伴热介质有蒸汽,电,热水,热油等,方式有外管伴热,夹套伴热,等,如何选择伴热介质,要通过对物料管线的具体研究,从温度,介质,及管线布置复杂状况来选择,伴热的方式,及保温等也需要合理的规划,不断的研究新的设计方案,已达到符合国家要求,及节约能源的目的。本论文源自作者参与设计的一套化工装置,但随着国家节能政策的不断深化,设计中的伴热系统已不能满足企业节能的要求,运行过程中出现疏水阀泄漏,冷凝液无法回收,造成大量的浪费。本文以节能,减排为目的,对整个装置进行优化设计,从伴热介质,伴热方式,保温材料及全局布置等方面优化了装置的伴热设计。通过对蒸汽伴热与热水伴热的研究,从可行性,散热损失,蒸汽耗用量与热水耗用量的对比,提出了部分蒸汽伴热改为热水伴热的优化方案；对于部分复杂管路管线也重新设计并以电伴热代替蒸汽伴热的方案,进行优化；本文还对蒸汽供给系统进行了优化研究,并重新设计蒸汽供热伴热部分,利用3D软件进行仿真模拟,出图,检查碰撞,生成材料表,实现了蒸汽伴热系统优化目标；达到企业节能,环保,增效的目的。在绝热保温的设计方面,由于传统的保温外壳多为不锈钢,铝皮,铁皮等,易腐蚀,容易变形,使用一段时间后容易开裂,生锈等,本文采用新型保温外壳来代替原来的外壳,材质为PVC,轻,耐腐蚀,性价比高,为绝热层材料提供有效,便捷,经济,美观的保护。
[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.
【学位授予单位】：北京化工大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TQ051.5
本文编号：2352933
[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.
【学位授予单位】：北京化工大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TQ051.5
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