CN206237147U - The distributed energy of liquefied natural gas plant stand utilizes system - Google Patents
The distributed energy of liquefied natural gas plant stand utilizes system Download PDFInfo
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- CN206237147U CN206237147U CN201621362708.2U CN201621362708U CN206237147U CN 206237147 U CN206237147 U CN 206237147U CN 201621362708 U CN201621362708 U CN 201621362708U CN 206237147 U CN206237147 U CN 206237147U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
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Abstract
本实用新型提出一种液化天然气厂站的分布式能源利用系统，包括可燃烧天然气的燃气内燃机，缸套水出口连接有可将缸套水从缸套水出口输出的第一泵体，第一泵体的排水端连接有装有溴化锂制冷剂的溴化锂单元，第一入口与第一泵体的排水端连接，第一出口与缸套水入口连接；燃气内燃机的排烟口连接有可传递烟气的热量至导热油的换热器，换热器入口与排烟口连接，换热器出口与溴化锂单元连接，第二入口与换热器出口连接，第二出口连接有引风机，引风机的出风端与大气连通；燃气内燃机的动力输出端连接有发电机，发电机的电力输出端连接于电网；溴化锂单元7还设置有第四入口和第四出口，第四入口连接有可向第四入口排放水的第三泵体11。本实用新型能源利用率高且成本低。
The utility model proposes a distributed energy utilization system for liquefied natural gas plants and stations, which includes a gas internal combustion engine capable of burning natural gas. The jacket water outlet is connected with a first pump body that can output the jacket water from the jacket water outlet. The drain end of the pump body is connected to a lithium bromide unit equipped with lithium bromide refrigerant, the first inlet is connected to the drain end of the first pump body, the first outlet is connected to the water inlet of the cylinder jacket; the exhaust port of the gas internal combustion engine is connected to a transferable smoke The heat of the gas is transferred to the heat exchanger of the heat transfer oil. The inlet of the heat exchanger is connected to the exhaust port, the outlet of the heat exchanger is connected to the lithium bromide unit, the second inlet is connected to the outlet of the heat exchanger, and the second outlet is connected to the induced draft fan. The air outlet end of the gas internal combustion engine is connected to the atmosphere; the power output end of the gas internal combustion engine is connected to a generator, and the power output end of the generator is connected to the grid; the lithium bromide unit 7 is also provided with a fourth inlet and a fourth outlet, and the fourth inlet is connected to a The fourth inlet discharges the third pump body 11 of water. The utility model has high energy utilization rate and low cost.
Description
技术领域technical field
本实用新型属于天然气能源利用技术领域，尤其涉及一种液化天然气厂站的分布式能源利用系统。The utility model belongs to the technical field of natural gas energy utilization, in particular to a distributed energy utilization system for liquefied natural gas plants and stations.
背景技术Background technique
液化天然气(LNG)作为高效、清洁能源，其在能源供应中占有的比例迅速增加。由于液化天然气厂站用的原料气压缩机、冷剂压缩机均为大功率耗电设备，且一般采用市政供电网供电，同时，液化天然气厂站的脱酸气系统和脱水系统一般采用电加热器或导热油炉提供高温，因此，会导致成本高且能源利用效率低的缺陷。As an efficient and clean energy, liquefied natural gas (LNG) has rapidly increased its proportion in energy supply. Since the feed gas compressors and refrigerant compressors used in LNG plants and stations are high-power power-consuming equipment, and are generally powered by the municipal power supply network, at the same time, the deacidification system and dehydration system of LNG plants and stations generally use electric heating The heat exchanger or the heat conduction oil furnace provide high temperature, therefore, it will cause the defects of high cost and low energy utilization efficiency.
发明内容Contents of the invention
本实用新型针对上述的液化天然气厂站能源利用率低，并且能源利用时成本高的技术问题，提出一种能源利用率高且成本低的液化天然气厂站的分布式能源利用系统。The utility model aims at the above-mentioned technical problems of low energy utilization rate of liquefied natural gas plant and station and high energy utilization cost, and proposes a distributed energy utilization system of liquefied natural gas plant station with high energy utilization rate and low cost.
为了达到上述目的，本实用新型采用的技术方案为：In order to achieve the above object, the technical solution adopted by the utility model is:
一种液化天然气厂站的分布式能源利用系统，包括可燃烧天然气的燃气内燃机，燃气内燃机包括天然气入口，可排出燃气内燃机缸套内缸套水的缸套水出口，可向燃气内燃机缸套输入缸套水的缸套水入口，可排出烟气的排烟口，以及内燃机动力输出端，天然气入口与天然气管道连接；A distributed energy utilization system for a liquefied natural gas plant and station, including a gas internal combustion engine that can burn natural gas. The gas internal combustion engine includes a natural gas inlet, and a jacket water outlet that can discharge the jacket water in the cylinder jacket of the gas internal combustion engine, and can be input to the cylinder jacket of the gas internal combustion engine. The jacket water inlet of the jacket water, the smoke outlet that can discharge smoke, and the power output end of the internal combustion engine, the natural gas inlet is connected to the natural gas pipeline;
缸套水出口连接有可将缸套水从缸套水出口输出的第一泵体，第一泵体的排水端连接有装有溴化锂制冷剂的溴化锂单元，溴化锂单元设置有第一入口及第一出口，第一入口与第一泵体的排水端连接，第一出口与缸套水入口连接；The jacket water outlet is connected with the first pump body which can output the jacket water from the jacket water outlet, the drain end of the first pump body is connected with a lithium bromide unit equipped with lithium bromide refrigerant, and the lithium bromide unit is provided with a first inlet and a second One outlet, the first inlet is connected to the drain end of the first pump body, and the first outlet is connected to the jacket water inlet;
燃气内燃机的排烟口连接有可传递烟气的热量至导热油的换热器，换热器设置有换热器入口及换热器出口，换热器入口与排烟口连接，换热器出口与溴化锂单元连接，溴化锂单元设置有第二入口及第二出口，第二入口与换热器出口连接，第二出口连接有引风机，引风机的出风端与大气连通；The smoke outlet of the gas internal combustion engine is connected with a heat exchanger that can transfer the heat of the flue gas to the heat transfer oil. The heat exchanger is provided with a heat exchanger inlet and a heat exchanger outlet. The heat exchanger inlet is connected to the smoke outlet. The outlet is connected to the lithium bromide unit, the lithium bromide unit is provided with a second inlet and a second outlet, the second inlet is connected to the outlet of the heat exchanger, the second outlet is connected to an induced draft fan, and the outlet end of the induced draft fan communicates with the atmosphere;
燃气内燃机的动力输出端连接有发电机，发电机的电力输出端连接于电网。The power output end of the gas internal combustion engine is connected to a generator, and the power output end of the generator is connected to the grid.
作为优选，换热器连接有可调节进入换热器入口烟气流量的第一阀体。Preferably, the heat exchanger is connected with a first valve body capable of adjusting the flow rate of flue gas entering the inlet of the heat exchanger.
作为优选，燃气内燃机与溴化锂单元之间设置有第二阀体，第二阀体的进气端与燃气内燃机的排烟口连接，第二阀体的出气端与溴化锂单元的第二入口连接。Preferably, a second valve body is provided between the gas internal combustion engine and the lithium bromide unit, the intake end of the second valve body is connected to the exhaust port of the gas internal combustion engine, and the gas outlet end of the second valve body is connected to the second inlet of the lithium bromide unit.
作为优选，溴化锂单元连接有通有水且可将水冷却的冷却单元，溴化锂单元设置有第三出口及第三入口，第三出口与冷却单元连接，冷却单元设置有冷却单元入口及冷却单元出口，冷却单元入口与第三出口连接，冷却单元出口与第三入口连接，冷却单元连接有可将冷却单元中的冷却水输入至溴化锂单元的第二泵体。As preferably, the lithium bromide unit is connected with a cooling unit that has water and can cool the water, the lithium bromide unit is provided with a third outlet and a third inlet, the third outlet is connected with the cooling unit, and the cooling unit is provided with a cooling unit inlet and a cooling unit outlet , the inlet of the cooling unit is connected with the third outlet, the outlet of the cooling unit is connected with the third inlet, and the cooling unit is connected with a second pump body which can input the cooling water in the cooling unit to the lithium bromide unit.
作为优选，溴化锂单元设置有第四入口和第四出口，第四入口连接有可向第四入口排放水的第三泵体，第三泵体的出水端与第四入口连接，第三泵体的入水端连接有进水管，第四出口连接有出水管。Preferably, the lithium bromide unit is provided with a fourth inlet and a fourth outlet, the fourth inlet is connected with a third pump body that can discharge water to the fourth inlet, the water outlet of the third pump body is connected with the fourth inlet, and the third pump body The water inlet end is connected with a water inlet pipe, and the fourth outlet is connected with a water outlet pipe.
与现有技术相比，本实用新型的优点和积极效果在于：Compared with the prior art, the utility model has the advantages and positive effects that:
本实用新型液化天然气厂站的分布式能源利用系统通过设置溴化锂单元、发电机、换热器、第一泵体及引风机，能够实现冷热电能的三联供：电能可供整个液化天然气厂站用电；热能可用于脱酸气系统和脱水系统；冷能可用于天然气和压缩机制冷剂的预冷，以减少压缩机的负荷。因此，本实用新型液化天然气厂站的分布式能源利用系统对能源的利用率高(可以达到70％以上)。The distributed energy utilization system of the liquefied natural gas plant and station of the utility model can realize the triple supply of cold and hot electric energy by setting a lithium bromide unit, a generator, a heat exchanger, a first pump body and an induced draft fan: the electric energy can be supplied to the entire liquefied natural gas plant and station Electricity consumption; thermal energy can be used for acid gas removal system and dehydration system; cold energy can be used for precooling of natural gas and compressor refrigerant to reduce compressor load. Therefore, the distributed energy utilization system of the liquefied natural gas plant and station of the utility model has a high energy utilization rate (up to more than 70%).
附图说明Description of drawings
图1为本实用新型液化天然气厂站的分布式能源利用系统的整体结构示意图。Fig. 1 is a schematic diagram of the overall structure of the distributed energy utilization system of the liquefied natural gas plant and station of the present invention.
以上各图中：1、燃气内燃机；2、发电机；3、第一阀体；4、第二阀体；5、换热器；6、引风机；7、溴化锂单元；8、第一泵体；9、冷却单元；10、第二泵体；11、第三泵体。In the above figures: 1. Gas internal combustion engine; 2. Generator; 3. First valve body; 4. Second valve body; 5. Heat exchanger; 6. Induced fan; 7. Lithium bromide unit; 8. First pump 9. Cooling unit; 10. The second pump body; 11. The third pump body.
具体实施方式detailed description
下面，通过示例性的实施方式对本实用新型进行具体描述。然而应当理解，在没有进一步叙述的情况下，一个实施方式中的元件、结构和特征也可以有益地结合到其他实施方式中。Below, the utility model is described in detail through exemplary embodiments. It should be understood, however, that elements, structures and characteristics of one embodiment may be beneficially incorporated in other embodiments without further recitation.
在本实用新型的描述中，需要说明的是，术语“第一”、“第二”、“第三”、“第四”仅用于描述目的，而不能理解为指示或暗示相对重要性。In the description of the present utility model, it should be noted that the terms "first", "second", "third" and "fourth" are used for description purposes only, and should not be understood as indicating or implying relative importance.
如图1所示，一种液化天然气厂站的分布式能源利用系统，包括可燃烧天然气的燃气内燃机1，燃气内燃机1包括天然气入口，可排出燃气内燃机缸套内缸套水的缸套水出口，可向出燃气内燃机缸套输入缸套水的缸套水入口，可排出烟气的排烟口，以及内燃机动力输出端，天然气入口与天然气管道连接；As shown in Figure 1, a distributed energy utilization system for liquefied natural gas plants and stations includes a gas-fired internal combustion engine 1 that can burn natural gas, and the gas-fired internal combustion engine 1 includes a natural gas inlet and a jacket water outlet that can discharge the jacket water in the cylinder jacket of the gas-fired internal combustion engine , the jacket water inlet that can input the jacket water to the cylinder jacket of the gas-fired internal combustion engine, the smoke exhaust port that can discharge the smoke, and the power output end of the internal combustion engine, and the natural gas inlet is connected to the natural gas pipeline;
进一步，缸套水出口连接有可将缸套水从缸套水出口输出的第一泵体8，第一泵体8的排水端连接有装有溴化锂制冷剂的溴化锂单元7，溴化锂单元7设置有第一入口及第一出口，第一入口与第一泵体8的排水端连接，第一出口与缸套水入口连接，上述第一泵体8、溴化锂单元7与燃气内燃机1可构成缸套水回路：缸套水从缸套水出口流出，经第一泵体8输入至第一入口，进而经第一入口流入溴化锂单元7，进而经溴化锂单元7的冷却后从第一出口输出，进而输入至缸套水出口，最后经缸套水出口流回至燃气内燃机缸套内；Further, the jacket water outlet is connected with a first pump body 8 that can output the jacket water from the jacket water outlet, and the drain end of the first pump body 8 is connected with a lithium bromide unit 7 equipped with a lithium bromide refrigerant, and the lithium bromide unit 7 is set There are a first inlet and a first outlet, the first inlet is connected to the drain end of the first pump body 8, the first outlet is connected to the jacket water inlet, the first pump body 8, the lithium bromide unit 7 and the gas internal combustion engine 1 can form a cylinder Jacket water circuit: the jacket water flows out from the outlet of the jacket water, is input to the first inlet through the first pump body 8, and then flows into the lithium bromide unit 7 through the first inlet, and then is output from the first outlet after being cooled by the lithium bromide unit 7, Then it is input to the cylinder jacket water outlet, and finally flows back into the cylinder jacket of the gas internal combustion engine through the cylinder jacket water outlet;
进一步，燃气内燃机1的排烟口连接有可传递烟气的热量至导热油的换热器5，换热器5设置有换热器入口及换热器出口，换热器入口与排烟口连接，换热器出口与溴化锂单元7连接，溴化锂单元7设置有第二入口及第二出口，第二入口与换热器出口连接，第二出口连接有引风机6，引风机6的出风端与大气连通，上述换热器5、溴化锂单元7、引风机6与燃气内燃机1可构成烟道主路：烟气从燃气内燃机1的排烟口输出，经换热器入口输入至换热器中进行换热，进而经换热器出口输出至第二入口，进而经第二入口输入至溴化锂单元7中进行冷却，进而经第二出口输出至引风机6，最后经引风机6输出至大气；Further, the exhaust port of the gas-fired internal combustion engine 1 is connected with a heat exchanger 5 that can transfer the heat of the flue gas to the heat transfer oil. The heat exchanger 5 is provided with a heat exchanger inlet and a heat exchanger outlet. connection, the outlet of the heat exchanger is connected to the lithium bromide unit 7, the lithium bromide unit 7 is provided with a second inlet and a second outlet, the second inlet is connected to the outlet of the heat exchanger, the second outlet is connected to the induced draft fan 6, and the air outlet of the induced draft fan 6 The end is connected to the atmosphere, and the above-mentioned heat exchanger 5, lithium bromide unit 7, induced draft fan 6 and gas internal combustion engine 1 can constitute the main flue path: the flue gas is output from the exhaust port of the gas internal combustion engine 1, and is input to the heat exchange through the inlet of the heat exchanger. heat exchange in the heat exchanger, and then output to the second inlet through the heat exchanger outlet, and then input to the lithium bromide unit 7 for cooling through the second inlet, and then output to the induced draft fan 6 through the second outlet, and finally output to the induced draft fan 6 through the induced draft fan 6 atmosphere;
燃气内燃机1的动力输出端连接有发电机2，发电机2的电力输出端连接于电网，上述发电机2、电网与燃气内燃机1构成发电主路：从燃气内燃机1的动力输出端输出的动能传递至发电机2，进而发电机2将动能转化为电能，最后发电机2将电能传输至电网，以供整个液化天然气厂站用电。The power output end of the gas internal combustion engine 1 is connected to a generator 2, and the power output end of the generator 2 is connected to the power grid. It is transmitted to the generator 2, and then the generator 2 converts the kinetic energy into electrical energy, and finally the generator 2 transmits the electrical energy to the power grid for the entire liquefied natural gas plant and station.
本实用新型液化天然气厂站的分布式能源利用系统通过设置溴化锂单元7、发电机2、换热器5、第一泵体8及引风机6，能够实现冷热电能的三联供：电能可供整个液化天然气厂站用电；热能可用于脱酸气系统和脱水系统；冷能可用于天然气和压缩机制冷剂的预冷，以减少压缩机的负荷。因此，本实用新型液化天然气厂站的分布式能源利用系统对能源的利用率高(可以达到70％以上)。The distributed energy utilization system of the liquefied natural gas plant and station of the utility model can realize the triple supply of cold and hot electric energy by setting the lithium bromide unit 7, the generator 2, the heat exchanger 5, the first pump body 8 and the induced draft fan 6: the electric energy can be supplied The entire liquefied natural gas plant uses electricity; heat energy can be used for acid gas removal system and dehydration system; cold energy can be used for precooling of natural gas and compressor refrigerant to reduce the load on the compressor. Therefore, the distributed energy utilization system of the liquefied natural gas plant and station of the utility model has a high energy utilization rate (up to more than 70%).
另外，换热器5连接有可调节进入换热器入口烟气流量的第一阀体3，以控制烟道主路烟气的流量。In addition, the heat exchanger 5 is connected with a first valve body 3 that can adjust the flow of flue gas entering the inlet of the heat exchanger, so as to control the flow of flue gas in the flue main path.
优选的，燃气内燃机1与溴化锂单元7之间设置有第二阀体4，第二阀体4的进气端与燃气内燃机1的排烟口连接，第二阀体4的出气端与溴化锂单元7的第二入口连接，上述第二阀体4、溴化锂单元7、引风机6与燃气内燃机1可构成烟道支路：烟气从燃气内燃机1的排烟口输出，经第二阀体4输入至第二入口，进而经第二入口输入至溴化锂单元7中进行冷却，进而经第二出口输出至引风机6，最后经引风机6输出至大气，以此当脱酸气系统和脱水系统热负荷降低时，可通过燃气内燃机1烟道支路将燃气内燃机1产生的高温烟气直接输送至烟气热水型溴化锂单元7。Preferably, a second valve body 4 is arranged between the gas internal combustion engine 1 and the lithium bromide unit 7, the intake end of the second valve body 4 is connected to the exhaust port of the gas internal combustion engine 1, and the gas outlet end of the second valve body 4 is connected to the lithium bromide unit. 7 is connected to the second inlet, the above-mentioned second valve body 4, lithium bromide unit 7, induced draft fan 6 and gas internal combustion engine 1 can form a flue branch: the flue gas is output from the exhaust port of the gas internal combustion engine 1, and passes through the second valve body 4 Input to the second inlet, and then input to the lithium bromide unit 7 for cooling through the second inlet, and then output to the induced draft fan 6 through the second outlet, and finally output to the atmosphere through the induced draft fan 6, so as to be used as a deacidification system and a dehydration system When the heat load decreases, the high-temperature flue gas generated by the gas internal combustion engine 1 can be directly transported to the flue gas hot water lithium bromide unit 7 through the flue branch of the gas internal combustion engine 1 .
进一步，溴化锂单元7还连接有通有水且可将水冷却的冷却单元9，溴化锂单元7设置有第三出口及第三入口，第三出口与冷却单元9连接，冷却单元9设置有冷却单元入口及冷却单元出口，冷却单元入口与第三出口连接，却单元出口与第三入口连接，冷却单元9连接有可将冷却单元9中的冷却水输入至溴化锂单元7的第二泵体10，上述冷却单元9、第二泵体10与溴化锂单元7可构成第一冷却水回路：经冷却单元9冷却后的冷却水在第二泵体10提供的动力下，由冷却单元出口输出至第三入口，并经第三入口输入至溴化锂单元7中进行吸热，进而经第三出口输出，最后经冷却单元入口流回至冷却单元9中进行冷却。Further, the lithium bromide unit 7 is also connected with a cooling unit 9 that has water and can be cooled by water, the lithium bromide unit 7 is provided with a third outlet and a third inlet, the third outlet is connected with the cooling unit 9, and the cooling unit 9 is provided with a cooling unit Inlet and cooling unit outlet, the cooling unit inlet is connected with the third outlet, but the unit outlet is connected with the third inlet, the cooling unit 9 is connected with the second pump body 10 that can input the cooling water in the cooling unit 9 to the lithium bromide unit 7, The above-mentioned cooling unit 9, the second pump body 10 and the lithium bromide unit 7 can constitute a first cooling water circuit: the cooling water cooled by the cooling unit 9 is output from the outlet of the cooling unit to the third cooling unit under the power provided by the second pump body 10. Inlet, and input into the lithium bromide unit 7 through the third inlet to absorb heat, and then output through the third outlet, and finally flow back to the cooling unit 9 through the inlet of the cooling unit for cooling.
另外，溴化锂单元7还设置有第四入口和第四出口，第四入口连接有可向第四入口排放水的第三泵体11，第三泵体11的出水端与第四入口连接，第三泵体11的入水端连接有进水管，第四出口连接有出水管，上述第三泵体11、进水管、出水管及溴化锂单元7可构成第二冷却水回路：冷却水经液化天然气厂站的换热装置换热后，由进水管输入至第三泵体11，进而经第三泵体11输出至第四入口，进而经第四入口输入至溴化锂单元7进行冷却，进而经第四出口输出，最后经出水管送回至液化天然气厂站，以对各流体介质进行冷却。In addition, the lithium bromide unit 7 is also provided with a fourth inlet and a fourth outlet. The fourth inlet is connected with a third pump body 11 that can discharge water to the fourth inlet. The water outlet end of the third pump body 11 is connected with the fourth inlet. The water inlet of the third pump body 11 is connected to the water inlet pipe, and the fourth outlet is connected to the water outlet pipe. The third pump body 11, the water inlet pipe, the water outlet pipe and the lithium bromide unit 7 can constitute the second cooling water circuit: the cooling water passes through the liquefied natural gas plant After heat exchange by the heat exchange device of the station, it is input to the third pump body 11 through the water inlet pipe, and then output to the fourth inlet through the third pump body 11, and then input to the lithium bromide unit 7 for cooling through the fourth inlet, and then passed through the fourth The outlet is output, and finally sent back to the liquefied natural gas plant station through the outlet pipe to cool the fluid media.
为了更好地理解本实用新型的技术方案，如图1所示，本实用新型液化天然气厂站的分布式能源利用系统的工作原理如下：In order to better understand the technical solution of the utility model, as shown in Figure 1, the working principle of the distributed energy utilization system of the utility model LNG plant station is as follows:
燃气内燃机1的缸套水通过第一泵体8输送至溴化锂单元7，换热后的缸套水由缸套水回路输送至燃气内燃机1；The jacket water of the gas internal combustion engine 1 is delivered to the lithium bromide unit 7 through the first pump body 8, and the jacket water after heat exchange is delivered to the gas internal combustion engine 1 by the jacket water circuit;
燃气内燃机1产生的高温烟气输送至换热器5，以加热导热油后将烟气输送至溴化锂单元7进行冷却，溴化锂单元7排放的烟气经引风机6排放至大气；The high-temperature flue gas produced by the gas-fired internal combustion engine 1 is sent to the heat exchanger 5 to heat the heat transfer oil, and then the flue gas is sent to the lithium bromide unit 7 for cooling, and the flue gas discharged by the lithium bromide unit 7 is discharged to the atmosphere through the induced draft fan 6;
天然气通过天然气管道输送至燃气内燃机1，燃气内燃机1的动力输出端与发电机2连接，发电机2将动能转化为电能，并将电能输送至电网；The natural gas is transported to the gas internal combustion engine 1 through the natural gas pipeline, and the power output end of the gas internal combustion engine 1 is connected to the generator 2, and the generator 2 converts the kinetic energy into electric energy, and transmits the electric energy to the power grid;
当脱酸气系统和脱水系统热负荷降低时，可通过燃气内燃机1烟道支路将燃气内燃机1产生的高温烟气输送至溴化锂单元7；When the heat load of the deacidification system and the dehydration system decreases, the high-temperature flue gas generated by the gas internal combustion engine 1 can be delivered to the lithium bromide unit 7 through the flue branch of the gas internal combustion engine 1;
冷却单元9的冷却水通过第二泵体10输送至溴化锂单元7，换热后的冷却水由第一冷却水回路输送至冷却单元9；The cooling water of the cooling unit 9 is transported to the lithium bromide unit 7 through the second pump body 10, and the cooling water after heat exchange is transported to the cooling unit 9 by the first cooling water circuit;
溴化锂单元7产生的冷却水通过第二冷却水回路输送至液化天然气厂站工艺装置区的各换热装置，工艺装置区各换热器换热后的冷却水通过第二冷却水回路输送至溴化锂单元7。The cooling water produced by the lithium bromide unit 7 is transported to each heat exchange device in the process unit area of the LNG plant station through the second cooling water circuit, and the cooling water after heat exchange in each heat exchanger in the process unit area is transported to the lithium bromide through the second cooling water circuit Unit 7.
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