CN205580252U - Surface evaporation air cooler - Google Patents

Abstract

The utility model discloses a surface evaporation air cooler for the petrochemical trade, include draught fan, air cooling finned tube bundle, catch hydrophone, atomizer, evaporator tube bank, air intake grid, water pump and water tank, air cooling finned tube bundle sets up below and level setting at the draught fan, and air cooling finned tube bundle entry links to each other with technology commodity circulation pipeline, and the export of air cooling finned tube bundle links to each other through the entry of pipeline with evaporator tube bank, evaporator tube bank is located air cooling finned tube bundle's below and level setting, and the evaporator tube bank export links to each other with technology commodity circulation pipeline, being equipped with in proper order between air cooling finned tube bundle and the evaporator tube bank and catching hydrophone and atomizer, evaporator tube bank lower part equipment is equipped with the air intake grid all around, is the water tank below the air intake grid. The utility model relates to a surface evaporation air cooler for the surface evaporation air cooler who contains the oil gas of impurity such as H2S, HCl, NH3. The heat exchange efficiency who not only remains current compound evaporative air cooler 's equipment is high, and once only investment and running cost are low, and equipment selection's adaptability has still been compromise under the operating mode that contains impurity such as H2S, HCl, NH3 in the technology commodity circulation to advantages such as land used province.

Description

A kind of surface evaporation air cooler

Technical field

This utility model relates to petrochemical industry, is specifically related in petrochemical industry a kind of surface and steams Send out air cooler, for containing H₂S、HCl、NH₃Surface evaporation air cooler Deng the oil gas of impurity.

Background technology

Dry air cooled heat exchanger is using surrounding air as cooling medium, relies on finned tube extension heat-transfer area Amass and strengthen heat transfer outside a tube, by air is horizontal plunder finned tube after air themperature elevated band walk heat, Make the equipment that high-temperature technology fluid in pipe is cooled down or condenses.In it can make pipe, process fluid goes out Mouth temperature is cooled to higher about 15～20 DEG C than environment dry-bulb temperature, so that process fluid is cold Rear temperature is subject to certain restrictions.

Evaporating air cooler is to conduct heat outside the evaporation enhanced tube utilizing outside tube water film, its work process It is to be transported to be positioned at horizontally disposed light pipe pipe by the recirculated cooling water in pond, equipment bottom with pump The shower water allotter of Shu Shangfang, is sprayed downwards tube surface by allotter by cooling water, Tube outer surface is made to form the thin water film of continuous uniform；Air-introduced machine is empty from equipment bottom by air simultaneously Gas entrance sucks, and makes the bottom-up flowing of air.The heat transfer outside a tube now conducted heat is except relying on moisture film And outside the sensible heat transfer between air stream, due also to water has the higher latent heat of vaporization, tube outer surface Conduct heat outside the evaporation enhanced tube of moisture film, to reach to cool down or the purpose of process fluid in condensing tube. In it can make pipe, Process fluid outlet temperature is cooled to higher about 5 DEG C than ambient wet bulb temperature, but such as Process stream inlets temperature is higher, the easy fouling of tube outer surface, so being not suitable for inlet temperature relatively The cooling of high process fluid or condensation.

Chinese patent CN 200968788Y discloses a kind of evaporative air-cooling formula heat exchanger, mainly by As the finned tube group of precooling zone, the heat exchanger components of evaporation and heat-exchange section, axial flow blower, Water spray Device and air intake grid are constituted.Air cooled finned tube group is positioned at below axial flow blower and is level Arranging, its one end connects with process fluid ducts, the other end and the heat exchanger components of evaporation and heat-exchange section Connection, the heat exchanger components of evaporation and heat-exchange section is positioned at below finned tube group, in evaporation and heat-exchange section heat exchange Parts be provided above water spray system, the bottom surrounding of equipment arranges air intake grid.This practicality is new Type can improve cooling condensation efficiency, reduce energy consumption；Simultaneously its to can be applicable to inlet temperature higher Process fluid also makes it obtain relatively low outlet temperature, effectively slows down evaporation and heat-exchange tube outer surface Scale formation, improves service efficiency and the life-span of equipment, reduces operating cost.

Chinese patent CN 104132559A discloses a kind of phase transformation strengthening compound air cooling system, its Including the air cooling heat radiator being placed on medium pipeline, to the blower fan of air cooling heat radiator air inducing, and The atomization chamber blown to described air cooling heat radiator, described atomization chamber is provided with air inlet and towards described The gas outlet of air cooling heat radiator import, is additionally provided with the nebulizer being connected with water pipe, institute in atomization chamber State nebulizer and be positioned at the rear of described air inlet.The present invention utilizes evaporation cooling to turn cold mutually with spraying But the type of cooling combined, reduces the inlet air temperature of air cooling heat radiator, makes air be down to Near its wet bulb temperature, the cooling-down effect of demand can be reached when summer high temperature.

Chinese patent CN 203385309 U discloses a kind of for cooling down hydrogenation reaction effluent Compound cooler, axial flow blower is arranged on the top of cooler, and water tank is arranged on cooler Bottom, water pump, for the water pump in water tank is delivered to spray equipment, utilizes air cooled air cooling Tube bank is horizontally set on the lower section of axial flow blower and is connected with horizontally disposed steam-generating bank, spray Device be arranged on air cooling tube bank with steam-generating bank between, be provided with between spray equipment and water tank into Air grid.This utility model heat exchange efficiency by equipment, reduces one-time investment and operating cost.

Because of H₂The existence of the impurity such as S, HCl, air cooling tube bank and steam-generating bank are carbon as selected material Steel, all of weld seam contacted with processing medium need to carry out eliminating the heat treatment of stress after welding. But all there is limitation regardless of collecting tubule or serpentine coil on manufacturing in existing evaporation air cooler, Weld seam can not accomplish two-sided full weld, and heat treatment is not easy to reach requirement, there is potential safety hazard.NH₃ Under operating mode Deng the existence of impurity, at a temperature of operating mode, it is impossible to avoid ammonium salt in tube bank completely The possibility of intercrystalline plugging, the version of existing evaporation air cooler is unfavorable for, restrains intercrystalline Maintenance after plugging.

At process-stream containing H₂S、HCl、NH₃Deng under the operating mode of impurity, not only need raising equipment Heat exchange efficiency, reduce one-time investment and operating cost, save and take up an area.Must consider should simultaneously The adaptability of lectotype selection under operating mode.

Utility model content

This utility model provides a kind of surface evaporation air cooler, is particularly used in containing H₂S、HCl、 NH₃Deng the surface evaporation air cooler of the oil gas of impurity, for solving compound air cooler of the prior art Because adaptability and the manufacturing issue of structure are susceptible to corrosion and reveal and difficult the asking of overhaul of the equipments Topic.

For solving above-mentioned technical problem, the technical solution adopted in the utility model is:

A kind of surface evaporation air cooler, including air-introduced machine, air cooled fin tube bundle, water vessel, mist Change device, steam-generating bank, air intake grid, water pump and water tank；It is characterized in that: described air cooling fin Tube bank is arranged on the lower section of air-introduced machine and is horizontally disposed with, air cooled fin tube beam entrance and process-stream Pipeline is connected, and the outlet of air cooled fin tube bundle is connected with the entrance of steam-generating bank by pipeline；Evaporation Tube bank is positioned at the lower section of air cooled fin tube bundle and is horizontally disposed with, steam-generating bank outlet and process-stream Pipeline is connected；Water vessel and nebulizer it is sequentially provided with between air cooled fin tube bundle and steam-generating bank, Steam-generating bank lower part equipment is formed around air intake grid, is water tank below air intake grid；Water pump is arranged on Water tank side, the water in suction water tank, it is connected with nebulizer by pipeline.

This utility model one surface evaporation air cooler, it is further characterized by described air cooling Every pass tube bundle of finned-tube bundle flows out direction along process-stream and tilts 0.8～1.2%.Need cooling Or the process-stream of condensation initially enters air cooled fin tube bundle and is cooled to 71～75 DEG C.

This utility model one surface evaporation air cooler, it is further characterized by described evaporation Every pass tube bundle of tube bank flows out direction along process-stream and tilts 0.8～1.2%.

This utility model one surface evaporation air cooler, it is further characterized by described sky Cold finned-tube bundle two ends use threaded plug type channel structure to connect.For using the air cooling of carbon steel material Finned-tube bundle, carries out eliminating the heat treatment of stress, heat exchange base tube and the company of tube sheet after bobbin carriage welding Connect and all use expanded and welded tube joint, post weld heat treatment.

This utility model one surface evaporation air cooler, it is further characterized by described steaming Sending out tube bank two ends uses threaded plug type channel structure to connect.For using the steam-generating bank of carbon steel material, Carrying out eliminating the heat treatment of stress after bobbin carriage welding, heat exchange base tube all uses swollen with the connection of tube sheet Weldering, post weld heat treatment.

This utility model compared with prior art has the advantages that

This utility model one surface evaporation air cooler, for containing H₂S、HCl、NH₃Deng impurity The surface evaporation air cooler of oil gas.Not only retain the heat exchange of the equipment of existing composite evaporation air cooler Efficiency is high, and the advantages such as one-time investment and operating cost are low, land used province have also been taken into account in technique Logistics contains H₂S、HCl、NH₃Deng under the operating mode of impurity, the adaptability of lectotype selection.

Tilt by every pass tube bundle is flowed out direction along process-stream, desirably prevent technique thing Flow and produce vapour lock in tube bank, to reduce equipment pressure drop.

Air cooled fin tube bundle and steam-generating bank all use two ends to use threaded plug type channel structure to connect, Achieve the two-sided full weld of weld seam and weld seam heat treatment, be conducive to slowing down wet H₂S corrosion and elimination stress Corrosion.

Air cooled fin tube bundle and steam-generating bank all use two ends to use threaded plug type channel structure to connect, If ammonium salt is in tube bank intercrystalline plugging, crystallization can be removed through the maintenance of plug heat exchanging pipe；If any individual Other heat exchanger tube occurs leakage that the scheme of stifled heat exchanger tube can be used to overhaul.

The present invention is further illustrated with detailed description of the invention below in conjunction with the accompanying drawings, but accompanying drawing It is not limiting as scope of the present utility model with detailed description of the invention.

Accompanying drawing explanation

Fig. 1 is the structural representation of a kind of surface evaporation air cooler of this utility model.

Reference shown in figure is: 1-air-introduced machine, 2-air cooled fin tube bundle, 3-water vessel, 4-nebulizer, 5-steam-generating bank, 6-air intake grid, 7-water tank, 8-water pump, 9-threaded plug type bobbin carriage.

Detailed description of the invention

The utility model is described in further detail below in conjunction with the accompanying drawings:

This utility model one surface evaporation air cooler, for containing H₂S、HCl、NH₃Deng impurity The surface evaporation air cooler of oil gas, including air-introduced machine 1, air cooled fin tube bundle 2, water vessel 3, Nebulizer 4, steam-generating bank 5, air intake grid 6, water tank 7 and water pump 8.Air cooled fin tube bundle 2 It is arranged on the lower section of air-introduced machine 1 and is horizontally disposed with, simultaneously air cooled fin tube bundle every pass tube bundle edge Process-stream flows out direction and tilts 1.0%, air cooled fin tube beam entrance 10 and process-stream pipeline phase Even, the outlet of air cooled fin tube bundle is connected by the entrance of pipeline steam-generating bank.Need cooling or cold Solidifying process-stream initially enters air cooled fin tube bundle 2 and is cooled to 71-80 DEG C.Steam-generating bank 5 Being positioned at the lower section of air cooled fin tube bundle and be horizontally disposed with, the every pass tube bundle of steam-generating bank simultaneously is along work Process stream flows out direction and tilts 1.0%, and steam-generating bank outlet 11 is connected with process-stream pipeline.Empty Water vessel 3 and nebulizer 4, evaporation tube it is sequentially provided with between cold finned-tube bundle 2 and steam-generating bank 5 Restrainting 5 lower part equipment and be formed around air intake grid 6, air intake grid 6 is water tank 7 below, and water pump 8 is arranged In water tank 7 side, the water in suction water tank 7, it is connected with nebulizer 4 by pipeline.Air cooling Finned-tube bundle 2 and steam-generating bank 5 all use two ends to use threaded plug type bobbin carriage 9 structure to connect.

Claims (4)

1. a surface evaporation air cooler, including air-introduced machine, air cooled fin tube bundle, water vessel, nebulizer, steam-generating bank, air intake grid, water pump and water tank；It is characterized in that: described air cooled fin tube bundle is arranged on the lower section of air-introduced machine and is horizontally disposed with, air cooled fin tube beam entrance is connected with process-stream pipeline, the outlet of air cooled fin tube bundle is connected with the entrance of steam-generating bank by pipeline, and every pass tube bundle of described air cooled fin tube bundle flows out direction along process-stream and tilts 0.8～1.2%；Steam-generating bank is positioned at the lower section of air cooled fin tube bundle and is horizontally disposed with, and steam-generating bank outlet is connected with process-stream pipeline；Being sequentially provided with water vessel and nebulizer between air cooled fin tube bundle and steam-generating bank, steam-generating bank lower part equipment is formed around air intake grid, is water tank below air intake grid；Water pump is arranged on water tank side, the water in suction water tank, is connected with nebulizer by pipeline.

Surface evaporation air cooler the most according to claim 1, it is characterised in that: every pass tube bundle of described steam-generating bank flows out direction along process-stream and tilts 0.8～1.2%.

Surface evaporation air cooler the most according to claim 1, it is characterised in that: described air cooled fin tube bundle two ends use threaded plug type channel structure to connect.

Surface evaporation air cooler the most according to claim 1, it is characterised in that: described steam-generating bank two ends use threaded plug type channel structure to connect.