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CN206237147U - 液化天然气厂站的分布式能源利用系统 - Google Patents

液化天然气厂站的分布式能源利用系统 Download PDF

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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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黄欢
黄磊
文豪
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Sichuan Jerry Heng Ri Natural Gas Engineering Co Ltd
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    • YGENERAL 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
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    • YGENERAL 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
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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。

Description

液化天然气厂站的分布式能源利用系统
技术领域
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。
背景技术
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。
发明内容
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。
为了达到上述目的,本实用新型采用的技术方案为:
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;
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;
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;
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。
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。
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。
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。
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。
与现有技术相比,本实用新型的优点和积极效果在于:
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)。
附图说明
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。
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。
具体实施方式
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。
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。
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;
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;
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;
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。
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)。
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。
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。
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。
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。
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:
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;
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;
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;
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;
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;
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。

Claims (5)

1.一种液化天然气厂站的分布式能源利用系统,其特征在于: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;
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;
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;
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。
2.根据权利要求1所述的液化天然气厂站的分布式能源利用系统,其特征在于: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)。
3.根据权利要求1所述的液化天然气厂站的分布式能源利用系统,其特征在于: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。
4.根据权利要求1-3中任一项所述的液化天然气厂站的分布式能源利用系统,其特征在于:溴化锂单元(7)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,冷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)。
5.根据权利要求1所述的液化天然气厂站的分布式能源利用系统,其特征在于:溴化锂单元(7)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。
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US12378864B2 (en) 2021-10-25 2025-08-05 Bj Energy Solutions, Llc Systems and methods to reduce acoustic resonance or disrupt standing wave formation in a fluid manifold of a high-pressure fracturing system
CN117685092A (zh) * 2023-12-07 2024-03-12 中国能源建设集团广东省电力设计研究院有限公司 一种燃气分布式能源站及工作方法

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