区域锅炉房供热系统能量梯级利用技术经济性研究

发布时间：2018-05-10 15:07

本文选题：区域锅炉房 + 能量梯级利用　；参考：《哈尔滨工业大学》2014年硕士论文

【摘要】：为减少区域锅炉房电耗，一些供热企业利用工业汽轮机代替电动机拖动热网循环泵和锅炉鼓、引风机等负载，但是当前工业汽轮机的使用都是无序的、无规模化的。对此，本文针对严寒和寒冷地区供热规模为200万m2~700万m2，采用工业汽轮机拖动热网循环泵、锅炉给水泵和鼓、引风机，，排汽用于汽水换热实现能量梯级利用和“热功联产”的区域锅炉房供热系统进行技术性、经济性和节能性研究。从而为工业汽轮机的合理配备及选择提供一定指导和参考。首先，分析了区域热水锅炉房供热系统形式以及区域蒸汽锅炉房和区域蒸汽热水锅炉房采用工业汽轮机拖动负载，排汽用于汽水换热实现能量梯级利用和“热功联产”的系统形式，绘制各种形式的区域锅炉房供热系统原理图。其次，对严寒和寒冷气候区锅炉容量和台数的配备，锅炉与拖动负载的配备及拖动负载用工业汽轮机与换热器的配备策略进行了研究。得到严寒和寒冷地区区域锅炉房内锅炉与拖动负载、工业汽轮机及汽水换热器的配置方案，并对严寒地区4台29MW~99MW和寒冷地区3台46MW~99MW的区域热水锅炉房、区域蒸汽锅炉房和区域蒸汽热水锅炉房进行配备。再次，对严寒和寒冷地区区域锅炉房供热系统锅炉及其热网循环泵，锅炉鼓、引风机和给水泵的运行调节和能耗进行了研究。得到严寒和寒冷地区不同形式的区域锅炉房供热系统锅炉及其拖动负载的运行调节公式和能耗公式，并对严寒和寒冷地区典型城市进行算例分析，得到各典型城市锅炉与拖动负载的运行调节过程和能耗。最后，建立区域锅炉房供热系统单位供热面积费用年值的经济模型，并分析区域蒸汽锅炉房和区域蒸汽热水锅炉房采用工业汽轮机拖动负载的经济性和节能性。以严寒和寒冷地区供热面积为200万m2~700万m2的供热系统进行案例分析，得到区域蒸汽热水锅炉房供热系统经济性优于区域蒸汽锅炉房供热系统，蒸汽锅炉房供热系统优于热水锅炉房供热系统；采用工业汽轮机代替电动机拖动负载，严寒地区可节电1.39kwh/m2~1.88kwh/m2，寒冷地区可节电0.96kwh/m2~1.36kwh/m2，考虑工业汽轮机拖动负载多耗燃煤量，严寒地区综合节煤量0.06kg标准煤/(m2a)~0.18kg标准煤/(m2a)，寒冷地区综合节煤0.05kg标准煤/(m2a)~0.09kg标准煤/(m2a)。
[Abstract]:In order to reduce the power consumption of regional boiler room, some heating enterprises use industrial steam turbine instead of motor to drive heat network circulating pump, boiler drum, induced fan and other loads, but at present the use of industrial steam turbine is disorderly and no scale. In this paper, in view of the heating scale of 2 million m ~ 2 ~ 7 million m ~ 2 in cold and cold regions, this paper adopts industrial steam turbine to drive heat network circulating pump, boiler feed water pump, drum, induced fan, etc. Exhaust steam is used to realize energy cascade utilization and "heat and power cogeneration" of regional boiler room heating system for technical, economic and energy saving research. Thus, it provides some guidance and reference for the reasonable configuration and selection of industrial steam turbine. Firstly, the form of district hot water boiler room heating system and the driving load of industrial steam turbine are analyzed in the district steam boiler room and district steam hot water boiler room. Exhaust steam is used for steam and water heat transfer to realize energy cascade utilization and "heat and power cogeneration" system form, and draw the schematic diagram of various forms of district boiler room heating system. Secondly, the allocation of boiler capacity and number, boiler and drag load, and industrial steam turbine and heat exchanger for driving load are studied. The configuration scheme of boiler and drag load, industrial steam turbine and steam-water heat exchanger in the boiler room in cold and cold regions is obtained, and the regional hot water boiler room of 4 29MW~99MW in cold area and 3 46MW~99MW in cold area is obtained. The area steam boiler room and the area steam hot water boiler room carries on the equipment. Thirdly, the operation regulation and energy consumption of the boiler and its circulating pump, boiler drum, induced fan and feed water pump in the district boiler room heating system in cold and cold areas are studied. The operation adjustment formula and energy consumption formula of boiler and its drag load in different forms of district boiler room heating system in cold and cold regions are obtained. Examples of typical cities in cold and cold regions are analyzed. The operation regulation process and energy consumption of typical urban boiler and drag load are obtained. Finally, an economic model of the annual cost per unit heating area of the district boiler room heating system is established, and the economy and energy saving of the regional steam boiler room and the regional steam hot water boiler room are analyzed. Based on the case study of a heating system with an area of 2 million m ~ 2 ~ 7 million m ~ 2 in cold and cold regions, it is concluded that the economy of the district steam hot water boiler room heating system is better than that of the regional steam boiler room heating system. The steam boiler room heating system is superior to the hot water boiler room heating system, the industrial steam turbine is used instead of the motor to drive the load, the power can be saved by 1.39kwhr / m2n 1.88kwhr / m2 in the cold area, and 0.96kwhr / m2c1.36kwhp / m2 by the cold region, considering the extra coal consumption of the industrial steam turbine drag load, The 0.06kg standard coal / m ~ 2a ~ (-1) standard coal / m ~ (2a) standard coal /
【学位授予单位】：哈尔滨工业大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TU833.1

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