Petrochemical plant afterheat comprehensive utilization method and system
A petrochemical plant, waste heat technology, applied in heating systems, residential hot water supply systems, heating methods, etc., can solve problems such as energy waste, low waste heat utilization, increase pollution, etc., to reduce energy pollution and save energy costs. , The effect of improving the utilization rate of waste heat
Pending Publication Date: 2018-11-02
BEIJING HUAQING MICRO EXTENSION ENERGY SAVING TECH CO LTD +1
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Problems solved by technology
At present, there is no technical solution that comprehensively considers the waste heat resources of each grade of each grade in the petrochemical plant, the type of energy demand, location, time and other factors, resulting in low waste heat utilization rate, energy waste, and increased pollution
Method used
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[0044]Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to enable those skilled in the art to fully understand the present invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced without some of these specific details. Furthermore, it should be understood that the invention is not limited to the particular embodiments described. Instead, it is conceivable to implement the present invention in any combination of the following features and elements, regardless of whether they relate to different embodiments. Accordingly, the following aspects, features, embodiments and advantages are by way of illustration only and should not be considered elements or limitations of the claims unless explicitly stated in the claims.
[0045] The meaning of each term involved in this specification ...
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The invention discloses a petrochemical plant afterheat comprehensive utilization method and system. The method comprises the following steps: at a heat taking end, different absorption heat pumps orelectric heating pumps or heat exchangers and communicating a heating medium water pipeline (300) are adopted to absorb heat of each grade of afterheat; at a heat use end, a high-temperature-difference heat exchange unit (210) or a terminal heat electric cooperative heat exchange unit (220) communicating with the heating medium water pipeline (300), a heating absorption heat pump (230), an absorption refrigerator unit (240), a hot water absorption heat pump (250) and a process heat exchanger (260) are used for producing hot water for warming, low-pressure steam, frozen water, household hot water and process hot water; and multiple first valves (401) are used for controlling opening and closing of any one or more of the heating medium water pipeline (360) and the high-temperature-difference heat exchange unit (210) to meet the heat use demands in different seasons, by different distances and with different types.
Description
technical field [0001] The invention relates to utilization of waste heat in petrochemical plants, in particular to a method and system for comprehensive utilization of waste heat in petrochemical plants. Background technique [0002] Petrochemical plants have abundant waste heat resources, and the grades of waste heat are different; the energy demand includes refrigeration, steam production, heating, process heat, hot water and other types, and the location of energy consumption may be far or near, and the time of energy consumption may be Summer, winter or transition season. At present, there is no technical solution that comprehensively considers waste heat resources of various grades in petrochemical plants, energy demand type, location, time and other factors, resulting in low waste heat utilization rate, energy waste, and increased pollution. [0003] It can be seen that a solution for comprehensive utilization of waste heat in petrochemical plants is needed in this f...
Claims
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IPC IPC(8): F25B30/04F24D11/02F24D17/02F24D19/10
CPCF24D11/0214F24D17/02F24D19/1006F25B30/04Y02B30/18
Inventor 齐心何正洪家杰姜琳焦阳田同虎程延杨俊
Owner BEIJING HUAQING MICRO EXTENSION ENERGY SAVING TECH CO LTD