CN109405288A - 油田用加热炉烟气余热回收装置 - Google Patents
油田用加热炉烟气余热回收装置 Download PDFInfo
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- CN109405288A CN109405288A CN201710708873.1A CN201710708873A CN109405288A CN 109405288 A CN109405288 A CN 109405288A CN 201710708873 A CN201710708873 A CN 201710708873A CN 109405288 A CN109405288 A CN 109405288A
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 128
- UGFAIRIUMAVXCW-UHFFFAOYSA-N carbon monoxide Chemical compound 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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H7/00—Storage heaters, i.e. heaters in which the energy is stored as heat in masses for subsequent release
- F24H7/02—Storage heaters, i.e. heaters in which the energy is stored as heat in masses for subsequent release the released heat being conveyed to a transfer fluid
- F24H7/04—Storage heaters, i.e. heaters in which the energy is stored as heat in masses for subsequent release the released heat being conveyed to a transfer fluid with forced circulation of the transfer fluid
- F24H7/045—Storage heaters, i.e. heaters in which the energy is stored as heat in masses for subsequent release the released heat being conveyed to a transfer fluid with forced circulation of the transfer fluid using fluid fuel
- F24H7/0466—Storage heaters, i.e. heaters in which the energy is stored as heat in masses for subsequent release the released heat being conveyed to a transfer fluid with forced circulation of the transfer fluid using fluid fuel the transfer fluid being water
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/06—Arrangements of devices for treating smoke or fumes of coolers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D15/00—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies
- F28D15/02—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes
- F28D15/0266—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes with separate evaporating and condensing chambers connected by at least one conduit; Loop-type heat pipes; with multiple or common evaporating or condensing chambers
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/30—Technologies for a more efficient combustion or heat usage
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
Abstract
本发明公开加热炉烟气余热回收装置,包括:通过管道依次连接的烟气余热换热器、原油加热换热器、储液罐、传热工质循环泵和传热工质分液器,其中:烟气余热换热器的传热工质出口通过传热工质气化传输管连接至原油加热换热器的传热工质入口;原油加热换热器的传热工质出口连接至储液罐的入口;传热工质分液器的出口连接至烟气余热换热器的传热工质入口。利用液相传热工质经过烟气余热换热器中吸收烟气余热后气化,气化后的传热工质由传热工质气化传输管与加热炉前的原油进行换热,气体的传热工质冷却放热后成为液态的进入储液罐,提高烟气余热的回收率,以及加热炉的热效率,降低燃料损耗。
Description
技术领域
本发明涉及油气田集输设备,具体涉及一种加热炉烟气余热回收装置。
背景技术
油田加热炉是地面集输、处理与输送各个环节中必不可少的重要生产设施之一。油井口加热、掺水、热洗、转油站含水油外输、原油脱水、联合站净化油外输、原油稳定、成品油输运以及地面设施的供暖和伴热等环节都需要使用加热炉。
在整个油气田生产系统中,集输系统加热炉消耗燃料量约占燃料总消耗量的80%,能耗最高。油田集输系统加热炉的排烟温度一般要求控制在180-220℃之间,但在实际运行过程中排烟温度普遍高于220℃。排烟热损失是加热炉的主要热损失之一,可达10%-20%。研究表明,排烟温度每降低12-15℃,加热炉效率可提高1%,排烟温度的高低直接影响加热炉的效率。
目前采用的降低加热炉烟气排放温度的技术措施有:
(1)根据燃油、燃气压力或出口温度,应用自控系统自动调节进油、进气量和配风量,控制过剩空气系数在合理的范围内进行燃烧;
(2)采用烟气氧含量自动监测仪,根据烟气中氧含量的大小,合理调节配风量,确保燃料充分燃烧;
(3)采用高效节能型燃烧器和全自动燃烧器,改善燃烧,减少燃烧热损失。
中国专利CN 105588137A提出一种热管余热回收装置,利用重力热管的高导热性能,将加热炉排放的烟气余热回收,将产生热空气吹回炉膛助燃,从而达到节约能源,降低排放温度,提高加热炉热效率的效果。
传统的重力式热管换热要求热烟气在下方,被加热物在上方,这样才能使重力式热管的传热工质实现传热。然而,油田用加热炉的排烟管在加热炉上面,被加热原油从加热炉的侧下方进人加热炉,这样对重力式热管的安装和布置造成困难。
发明内容
本发明的目的是提供一种加热炉烟气余热回收装置,用分体式热管换热器回收油气集输系统加热炉排放的烟气余热,对加热炉前的原油进行热交换预热,提高加热炉的热效率,降低燃料消耗。
为了实现上述目的,本发明提出一种加热炉烟气余热回收装置,包括:
通过管道依次连接的烟气余热换热器、原油加热换热器、储液罐、传热工质循环泵和传热工质分液器;
所述烟气余热换热器的传热工质出口通过传热工质气化传输管连接至所述原油加热换热器的传热工质入口;
所述原油加热换热器的传热工质出口连接至所述储液罐的入口;
所述传热工质分液器的出口连接至所述烟气余热换热器的传热工质入口。
优选地,所述原油加热换热器安装于所述加热炉的原油管道上,所述原油加热换热器的传热工质用于与所述原油管道内流动的原油进行换热。
优选地,所述加热炉包括加热炉壳体和设置于所述加热炉壳体内的原油加热盘管。
优选地,所述原油加热盘管的入口连接至所述原油管道。
优选地,所述加热炉还包括设置于所述加热炉壳体内的火管和与所述火管相连通的烟囱,所述烟气余热换热器的传热工质用于与所述烟囱排出的烟气进行换热。
优选地,所述加热炉还包括设于所述火管入口的风机。
优选地,所述加热炉还包括与所述火管相连通的燃料管。
优选地,所述烟气余热换热器安装在所述烟囱中。
优选地,所述加热炉内设有导热液。
优选地,所述储液罐的储液量能够被调节。
本发明提供的加热炉烟气余热回收装置有益效果在于:
1、采用循环泵对热管中的传热工质进行驱动循环,可使加热炉的上部热量对下部即将进入加热炉的原油进行加热,克服了传统的重力式热管的热量只能从下部向上部传递的缺点。
2、将烟气余热换热器设置于烟囱中,利用液相传热工质经过烟气余热换热器中吸收烟气余热后气化,气化后的传热工质由传热工质气化传输管与进入加热炉前的原油进行换热,气体的传热工质冷却放热后成为液态的传热工质进入储液罐,传热工质循环泵将储液罐的液相传热工质通过传热工质传热管输入至烟气余热换热器,实现烟气余热的循环回收利用,提高加热炉的热效率,降低燃料损耗。
本发明的其它特征和优点将在随后具体实施方式部分予以详细说明。
附图说明
通过结合附图对本发明示例性实施例进行更详细的描述,本发明的上述以及其它目的、特征和优势将变得更加明显。其中,在示例性实施例中,相同的参考标号通常代表相同部件。
图1示出了本发明一个实施例中的利用加热炉烟气余热回收装置的工艺流程示意图。
附图标记说明:
1、烟气余热换热器;2、传热工质分液器;3、传热工质传液管;4、传热工质气化传输管;5、传热工质循环泵;6、原油加热换热器;7、储液罐;8、加热炉外壳;9、原油加热盘管;10、导热液;11、火管;12、风机;13、燃料管;14烟囱。
具体实施方式
下面将参照附图更详细地描述本发明的优选实施例。虽然附图中显示了本发明的优选实施例,然而应该理解,可以以各种形式实现本发明,而不应被这里阐述的实施例所限制。相反,提供这些实施例是为了使本发明更加透彻和完整,并且能够将本发明的范围完整地传达给本领域的技术人员。
本发明的实施例提供一种加热炉烟气余热回收装置,包括:
通过管道依次连接的烟气余热换热器、原油加热换热器、储液罐、传热工质循环泵和传热工质分液器,其中:烟气余热换热器的传热工质出口通过传热工质气化传输管连接至原油加热换热器的传热工质入口;原油加热换热器的传热工质出口连接至储液罐的入口;传热工质分液器的出口连接至烟气余热换热器的传热工质入口。
液相传热工质在烟气余热换热器中吸收烟气余热后气化,气化后的传热工质由传热工质气化传输管传输与进加热炉前的原油进行换热,气态的传热工质冷凝放热后成为液态进入储液罐内,传热工质循环泵从储液罐中将液态传热工质加压后经传热工质传液管输送至传热工质分液器,传热工质分液器可使传热工质均匀的进入烟气余热换热器,提高与烟气的换热效率,实现烟气余热的热量的循环回收利用。
传热工质储液罐用于储存经原油加热换热器换热后冷凝的液态传热工质,防止传热工质循环泵的吸入口存在气液两相进入,从而对循环泵造成损伤。
作为优选方案,原油加热换热器安装于加热炉的原油管道上,原油加热换热器的传热工质用于与原油管道内流动的原油进行换热,将气态的传热工质与原油换热,可提高原油的进炉温度。
作为优选方案,加热炉包括加热炉壳体和设置于加热炉壳体内的原油加热盘管。
作为优选方案,原油加热盘管的入口连接至原油管道。
作为优选方案,加热炉还包括设置于加热炉壳体内的火管和与火管相连通的烟囱,烟气余热换热器的传热工质用于与烟囱排出的烟气进行换热。
作为优选方案,加热炉还包括设于火管入口的风机,风机有助于火管内燃料充分燃烧。
作为优选方案,加热炉还包括与火管相连通的燃料管,为加热炉提供燃料。
作为优选方案,烟气余热换热器安装在烟囱中,充分利用排放的烟气的余热与传热工质进行换热。
作为优选方案,加热炉内设有导热液,火管将加热炉内的导热液加热,导热液将热量传递给浸入其中的原油加热盘管,对原油加热盘管内的原油进行加热。
作为优选方案,储液罐的储液量能够被调节,通过所述的储液罐的储液量来调节传热工质的循环量,从而控制系统的传热量及烟气换热后的排放温度,使得经过烟气余热换热器后的烟气温度在烟气露点以上,以防止烟气对烟囱的腐蚀。
实施例
图1示出了本发明一个实施例中的利用加热炉烟气余热回收装置的工艺流程示意图。
如图1所示,实施例提供一种加热炉烟气余热回收装置,包括:
通过管道依次连接的烟气余热换热器1、原油加热换热器6、储液罐7、传热工质循环泵5和传热工质分液器2,其中:烟气余热换热器1的传热工质出口通过传热工质气化传输管4连接至原油加热换热器6的传热工质入口;原油加热换热器6的传热工质出口连接至储液罐7的入口;传热工质分液器2的出口连接至烟气余热换热器1的传热工质入口。储液罐7的储液量能够来调节传热工质的循环量,从而控制系统的传热量及烟气换热后的排放温度。
加热炉包括加热炉壳体8和设置于加热炉壳体8内的原油加热盘管9,原油加热换热器6的传热工质用于与原油加热盘管9内流动的原油进行换热;原油加热换热器6安装于进加热炉前的原油管道上,使气态的传热工质与原油换热。还包括设置于加热炉壳体8内的火管11和与火管11相连通的烟囱14,烟气余热换热器1的传热工质用于与烟囱14排出的烟气进行换热;烟气余热换热器1安装在加热炉烟气排放的烟囱14中。
加热炉还包括设于火管11入口的风机12,风机12有助于火管11内燃料充分燃烧。火管11入口还与燃料管13相连通,为加热炉提供燃料。加热炉内设有导热液10,火管11将加热炉内的导热液10加热,导热液10将热量传递给浸入其中的原油加热盘管9,对原油加热盘管9内的原油进行加热。
加热炉工作时,火管11内通入空气和燃料点燃,对加热炉内的导热液10进行加热,导热液10将热量传递给浸入其内的原油加热盘输管9,对原油进行加热。传热工质循环泵5将储液罐7中的液相传热工质通过传热工质传液管3输送至烟气余热换热器1中,传热工质传液管3中的液相工质通过传热工质分液器2输送至烟气余热换热器1;火管11与烟囱14连接,高温烟气通过烟气余热换热器1,液相传热工质在烟气余热换热器1中吸收烟气余热后气化,气化后的传热工质由传热工质气化传输管4传输至原油加热换热器6,与进加热炉前的原油进行换热,气态的传热工质冷凝放热后成为液态进入储液罐7,实现烟气余热的回收利用,提高加热炉的热效率,降低燃料损耗。
上述技术方案只是本发明的一种实施例,对于本领域内的技术人员而言,在本发明的原理的基础上,很容易做出各种类型的改进或变形,而不仅限于本发明上述具体实施例的描述,因此前面的描述只是优选的,而并不具有限制性的意义。
Claims (10)
1.一种加热炉烟气余热回收装置,其特征在于,包括通过管道依次连接的烟气余热换热器、原油加热换热器、储液罐、传热工质循环泵和传热工质分液器,其中:
所述烟气余热换热器的传热工质出口通过传热工质气化传输管连接至所述原油加热换热器的传热工质入口;
所述原油加热换热器的传热工质出口连接至所述储液罐的入口;
所述传热工质分液器的出口连接至所述烟气余热换热器的传热工质入口。
2.根据权利要求1所述的加热炉烟气余热回收装置,其中,所述原油加热换热器安装于所述加热炉的原油管道上,所述原油加热换热器的传热工质用于与所述原油管道内流动的原油进行换热。
3.根据权利要求2所述的加热炉烟气余热回收装置,其中,所述加热炉包括加热炉壳体和设置于所述加热炉壳体内的原油加热盘管。
4.根据权利要求3所述的加热炉烟气余热回收装置,其中,所述原油加热盘管的入口连接至所述原油管道。
5.根据权利要求1所述的加热炉烟气余热回收装置,其中,所述加热炉还包括设置于所述加热炉壳体内的火管和与所述火管相连通的烟囱,所述烟气余热换热器的传热工质用于与所述烟囱排出的烟气进行换热。
6.根据权利要求5所述的加热炉烟气余热回收装置,其中,所述加热炉还包括设于所述火管入口的风机。
7.根据权利要求5所述的加热炉烟气余热回收装置,其中,所述加热炉还包括与所述火管相连通的燃料管。
8.根据权利要求5所述的加热炉烟气余热回收装置,其中,所述烟气余热换热器安装在所述烟囱中。
9.根据权利要求1所述的加热炉烟气余热回收装置,其中,所述加热炉内设有导热液。
10.根据权利要求1所述的加热炉烟气余热回收装置,其中,所述储液罐的储液量能够被调节。
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