CN214891854U

CN214891854U - Crude oil water jacket heating furnace

Info

Publication number: CN214891854U
Application number: CN202120752793.8U
Authority: CN
Inventors: 胡滨
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-04-13
Filing date: 2021-04-13
Publication date: 2021-11-26
Anticipated expiration: 2031-04-13

Abstract

The utility model relates to a crude oil heating equipment field discloses a crude oil water jacket heating furnace. The crude oil water jacket heating furnace comprises a furnace body (1), wherein a crude oil heating coil (11) and fire tubes (12) are arranged in the furnace body (1), the fire tubes (12) are located below the crude oil heating coil (11) at intervals, a plurality of finned tubes (123) are arranged in the fire tubes (12), and the insides of the finned tubes (123) are communicated with the outsides of the fire tubes (12). The utility model discloses a crude oil water jacket heating furnace is through setting up many finned tubes in the firetube to make the inside outside intercommunication with the firetube of finned tube, when using, the water in the furnace body still can get into finned tube inside through the port of finned tube when with the contact heat transfer of firetube wall, and the water in the finned tube can with the pipe wall contact heat transfer of finned tube, so can increase the water in the furnace body and the heat transfer area of firetube, and then improve the heating efficiency of crude oil water jacket heating furnace.

Description

Crude oil water jacket heating furnace

Technical Field

The utility model relates to a crude oil heating equipment field specifically relates to a crude oil water jacket heating furnace.

Background

In order to ensure that the crude oil has good fluidity in the conveying process, a crude oil water jacket heating furnace is used for heating the crude oil in each oil field. The method specifically comprises the following steps: natural gas from a fuel system is combusted in the fire tube through the combustor, heat is transferred to water in the heating furnace through the fire tube, the heat is transferred to the crude oil heating coil after the water is heated, and crude oil flows through the crude oil heating coil and enters the oil pipeline system after being heated.

However, the existing crude oil water jacket heating furnace has the problems of small heat exchange area of a fire tube, higher exhaust gas temperature, lower heat efficiency, poor heat transfer performance, non-corrosion resistance and the like because a crude oil heating coil adopts a common seamless steel tube.

SUMMERY OF THE UTILITY MODEL

The utility model aims at the above-mentioned problem, a crude oil water jacket heating furnace is provided, this crude oil water jacket heating furnace has the firetube to the heat transfer area of section and increases, and crude oil heating coil adopts stainless steel nodal pipe, and coefficient of heat transfer increases, corrosion-resistant to the thermal efficiency of crude oil water jacket heating furnace has been improved.

In order to realize the above object, the utility model provides a crude oil water jacket heating furnace, crude oil water jacket heating furnace includes the furnace body, be equipped with crude oil heating coil and firetube in the furnace body, the firetube is located at an interval the below of crude oil heating coil, be equipped with many finned tubes in the firetube, the inside of finned tube with the outside intercommunication of firetube.

Optionally, the finned tube includes a light tube and a heat dissipation fin, the light tube extends along a radial direction of the fire tube, and both end ports of the light tube are communicated with an outside of the fire tube, the heat dissipation fin is connected to an outer wall of the light tube, and the heat dissipation fin extends spirally with an axis of the light tube as an axis.

Optionally, a plurality of said finned tubes are arranged parallel to and spaced apart from each other within said fire tube.

Optionally, the fire tubes are U-shaped and include a radiation section and a convection section connected together, and the finned tubes are disposed in the convection section of the fire tubes.

Optionally, the cross section of the radiation section is circular, and the cross section of the convection section is square.

Optionally, one end of the fire tube is provided with a burner mounting port, the other end of the fire tube extends out of the furnace body and is provided with an explosion door, a chimney and a condensed water discharge port, and the condensed water discharge port is provided with a valve.

Optionally, a water inlet, a manhole and a drain outlet are arranged on the furnace body, and a valve is arranged on the drain outlet.

Optionally, the crude oil heating coil is comprised of a plurality of stainless steel corrugated tube bundles.

Optionally, the crude oil heating coil is U-shaped, and one end of the crude oil heating coil is a crude oil inlet, and the other end is a crude oil outlet.

Optionally, the crude oil water jacket heating furnace comprises a base, and the base is arranged below the furnace body.

The utility model discloses a crude oil water jacket heating furnace is through setting up many finned tubes in the firetube to make the inside of finned tube and the outside intercommunication of firetube, when using, the water in the furnace body still can get into finned tube inside through the port of finned tube when with the pipe wall contact heat transfer of firetube, and the water in the finned tube can contact the heat transfer with the pipe wall of finned tube, so can increase the water in the furnace body and the heat transfer area of firetube, and then improves the heating efficiency of crude oil water jacket heating furnace.

Drawings

FIG. 1 is a front view of a crude oil water jacket heating furnace according to an embodiment of the present invention;

FIG. 2 is a top view of the fire tube of FIG. 1;

FIG. 3 is a top view of the crude heating coil of FIG. 1;

FIG. 4 is a cross-sectional view of the crude oil jacketed furnace of FIG. 1;

FIG. 5 is an enlarged schematic view of the finned tube of FIG. 4;

FIG. 6 is a schematic structural view of a second embodiment of the finned tube of the present invention;

FIG. 7 is a schematic structural view of a third embodiment of the finned tube of the present invention;

FIG. 8 is a schematic structural view of a fourth embodiment of the finned tube of the present invention;

FIG. 9 is a schematic structural view of a fifth embodiment of the finned tube of the present invention.

Description of the reference numerals

1, a furnace body; 11-crude oil heating coil; 12-fire tube; 121-a radiating section; 122-convection section; 123-finned tube; 124-burner mounting port; 125-explosion vent; 126-chimney; 127-condensate drain; 128-a light pipe; 129-radiating fins; 101-a water inlet; 102-manhole; 103-heating furnace base; 104-a sewage draining outlet; 111-crude oil import; 112-crude oil export

Detailed Description

The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings. It is to be understood that the description of the embodiments herein is for purposes of illustration and explanation only and is not intended to limit the invention.

In the present invention, the use of the terms of orientation such as "upper and lower" in the case where no description is made to the contrary generally means the orientation in the assembled and used state. "inner and outer" refer to the inner and outer contours of the respective component itself.

The utility model provides a crude oil water jacket heating furnace, this crude oil water jacket heating furnace include furnace body 1, are equipped with crude oil heating coil 11 and firetube 12 in the furnace body 1, firetube 12 is located at an interval the below of crude oil heating coil 11, be equipped with many finned tubes 123 in the firetube 12, the inside of finned tube 123 with the outside intercommunication of firetube 12.

The utility model discloses a crude oil water jacket heating furnace has increased the heat transfer area of furnace body water-logging and firetube through set up many finned tubes in the firetube, has improved heating efficiency and heat transfer performance.

The utility model discloses a set up many finned tubes 123 in firetube 12 to make the inside of finned tube 123 and the outside intercommunication of firetube 12, when using, water in the furnace body 1 when with the pipe wall contact heat transfer of firetube 12, still can get into inside the finned tube 123 through the port of finned tube 123, because the finned tube 123 sets up in firetube 12, water in the finned tube 123 can with the pipe wall contact heat transfer of finned tube 123, so can increase the water in the furnace body 1 and the heat transfer area of firetube 12, and then improved the thermal efficiency of heating furnace.

In the present invention, preferably, the finned tube 123 may include a light pipe 128 and heat dissipating fins 129, and the heat dissipating fins 129 are connected to an outer wall of the light pipe 128. By providing the heat radiation fins 129 outside the light pipe 128, the surface area of the finned tube 123 can be further increased, thereby increasing the heat exchange area between the water in the furnace body 1 and the fire tubes 12.

Wherein, as shown in fig. 2 and 4, the light pipe 128 can be disposed along the radial direction of the fire tube 12, and both end ports are communicated with the outside of the fire tube 12.

In the embodiment shown in fig. 5, the heat sink fins 129 may extend spirally with the axis of the light pipe 128 as an axis. By the arrangement, the surface area of the finned tube 123 is increased, so that the heat exchange area is increased, and the heating efficiency and the heat transfer performance are improved. The outside of the radiating fin 129 is flue gas generated after natural gas combustion, the inside of the light pipe 128 is water in the furnace body 1, and the flue gas generated after natural gas combustion exchanges heat with the water in the furnace body 1 through the outside of the finned pipe 123.

Of the above, the heat dissipating fins 129 preferably have a thickness of about 1mm and a width of about 10 mm.

As shown in the embodiment of fig. 6, the finned tube 123 includes a plurality of fins 129, the fins 129 being elongated plate-like structures extending in the axial direction of the light pipe 128, the plurality of fins 129 being uniformly arranged at intervals in the circumferential direction of the light pipe 128.

In the embodiment shown in fig. 7, the finned tube 123 includes a plurality of fins 129, the fins 129 being a circular ring-shaped structure extending in the circumferential direction of the light pipe 128, the plurality of fins 129 being uniformly arranged at intervals in the axial direction of the light pipe 128.

As shown in fig. 8, the finned tube 123 may not have the heat dissipating fins 129, but may have a plurality of spherical convex structures on the outer wall surface of the light pipe 128, thereby increasing the surface heat exchange area.

As shown in fig. 9, the finned tube 123 may not have the heat dissipating fins 129, but may have a plurality of spherical recessed structures on the outer wall surface of the light pipe 128, thereby increasing the surface heat exchange area.

In the utility model, in order to further increase the heat transfer area, improve heating efficiency and heat transferability, the multiple finned tubes 123 are preferably set up in parallel to each other and at intervals in the firetube 12.

In the present invention, as shown in fig. 2, the fire tube 12 can be U-shaped, including the connected radiation section 121 and convection section 122, the finned tube 123 is disposed in the convection section 122. The flue gas after the natural gas combustion firstly passes through the radiation section 121, the heat exchanges heat with the water in the furnace body 1 through the radiation section 121, and then passes through the convection section 122, and exchanges heat with the water in the furnace body 1 through the finned tube 123 arranged in the convection section 122. The fire tube 12 is U-shaped, so that the inlet of the natural gas and the outlet of the flue gas generated after the natural gas is combusted are on the same side, and the operation of personnel is facilitated.

Preferably, the cross section of the radiation section 121 is circular, and the cross section of the convection section 122 is square. The cross section of the radiation section 121 is round so as to be connected with a natural gas burner, and the cross section of the convection section 122 is square so as to be connected with two ends of the finned tube 123. The outside dimension of the square cross-section of the convection section 122 is greater than the diameter of the circular cross-section of the radiant section 121 to facilitate the connection of the convection section 122 to the radiant section 121.

As shown in fig. 1 and 2, one end of the fire tube 12 is provided with a burner installation port 124, the other end of the fire tube 12 extends out of the furnace body 1 and is provided with a blast gate 125, a chimney 126 and a condensed water discharge port 127, and the condensed water discharge port 127 is provided with a valve. The natural gas burner is installed on the burner installation opening 124, and the flue gas after the natural gas burning is discharged through a chimney 126. After the natural gas is combusted, a large amount of gases such as carbon dioxide, water vapor and nitrogen oxides are generated, after the waste flue gas enters the convection section 122, the waste flue gas is rapidly cooled in the convection section 122, the water vapor in the flue gas is condensed to generate liquid water, and meanwhile, the carbon dioxide in the flue gas is dissolved to form weak acid water. The condensed water discharge port 127 is located at a lower position of the fire tube, and after a valve on the condensed water discharge port 127 is opened, condensed water containing weak acid is discharged, thereby reducing the discharge of harmful gas. The explosion vent 125 is used to resist an accidental explosion inside the fire tube 12 when the natural gas is burned, to ensure the life safety of personnel, to be not damaged by an explosion shock wave, and to effectively prevent the continuation of the explosion hazard.

As shown in fig. 1, the furnace body 1 is further provided with a water inlet 101, a manhole 102 and a sewage outlet 104, and the sewage outlet 104 is provided with a valve. The water inlet 101 is used for adding water into the furnace body 1, and the manhole 102 is used for checking the condition in the furnace body 1. After the valve on the sewage outlet 104 is opened, the impurities precipitated in the furnace body 1 can be discharged.

In the present invention, the crude oil heating coil 11 is preferably composed of a plurality of stainless steel corrugated tube bundles. Compared with a common carbon steel pipe, the stainless steel corrugated pipe bundle has lighter dead weight, can reduce the dead weight of the heating furnace, has a heat transfer coefficient higher than that of the common steel pipe and corrosion resistance higher than that of the common steel pipe, can prevent harmful substances in crude oil from corroding the pipe wall, and prolongs the service life of the heating furnace.

As shown in fig. 3, the crude oil heating coil 11 may be U-shaped, and one end of the crude oil heating coil 11 is a crude oil inlet 111 and the other end is a crude oil outlet 112. The crude oil heating coil 11 is set to be U-shaped, so that the crude oil inlet 111 and the crude oil outlet 112 are on the same side, and the operation is convenient for personnel.

In the utility model, as shown in fig. 1, the crude oil water jacket heating furnace can also comprise a base 103, and the base 103 is arranged below the furnace body 1. The pedestal 103 is used for supporting the furnace body 1.

The following describes the manufacturing process of a crude oil water jacket heating furnace shown in fig. 1:

welding the base 103;

rolling and welding the furnace body 1, and welding interfaces and flanges on two sides of the furnace body 1;

manufacturing the radiant section 121 and the convection section 122 of the fire tube 12, and welding the finned tube 123 in the convection section;

welding a stainless steel corrugated pipe bundle as a crude oil heating coil 11;

fixing a fire tube 12 and a crude oil heating coil 11 in the furnace body 1;

welding end sockets, various pipe orifices and flanges at two ends of the furnace body 1;

the furnace body 1 is arranged on the base 103, and a chimney 126 is welded;

carrying out integral pressure test and leakage test;

the outer wall of the furnace body 1 is corrosion-resistant and heat-insulating;

and (5) installing a burner.

When in use, water is injected into the furnace body 1 from the water inlet 101 above the furnace body 1. Crude oil enters the crude oil heating coil 11 from the crude oil inlet 111 and flows out from the crude oil outlet 112. The natural gas is combusted in the fire tubes 12 by the burner, and the flue gas from the combustion of the natural gas passes through the radiant section 121 of the fire tubes 12, through the convection section 122 of the fire tubes 12, and out the stack 126. The finned tube 123 inside the convection section 122 communicates internally with the exterior of the fire tube 12. During the process from the combustion of the burner to the final discharge of the natural gas, the heat is exchanged with the water inside the furnace body 1 through the fire tubes 12, and the heated water transfers the heat to the crude oil in the crude oil heating coil 11. The finned tube 123 increases the heat exchange area, so that the heat exchange between the flue gas generated by the combustion of the natural gas and the water in the furnace body 1 is more sufficient. The carbon dioxide in the flue gas is combined with the condensed liquid water at the end of the convection section 122 and weak acid water is generated, and is discharged from the condensed water discharge port 127 along with the condensed water.

The fire tube (the internal structure contains the finned tube) of the utility model can be installed and used in any middle and small hot water boiler and steam boiler which take natural gas or fuel oil as fuel (except special boiler furnace of oil refining and chemical industry).

The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited thereto. The technical scheme of the utility model in the technical conception scope, can be right carry out multiple simple variant. In order to avoid unnecessary repetition, the present invention does not separately describe various possible combinations. These simple variations and combinations should also be considered as disclosed in the present invention, all falling within the scope of protection of the present invention.

Claims

1. The crude oil water jacket heating furnace is characterized by comprising a furnace body (1), wherein a crude oil heating coil (11) and fire tubes (12) are arranged in the furnace body (1), the fire tubes (12) are located below the crude oil heating coil (11) at intervals, a plurality of finned tubes (123) are arranged in the fire tubes (12), and the insides of the finned tubes (123) are communicated with the outsides of the fire tubes (12).

2. The crude oil water jacket heating furnace according to claim 1, wherein the finned tube (123) comprises a light pipe (128) and a heat dissipating fin (129), the light pipe (128) is arranged along the radial extension of the fire tube (12), the two end ports of the light pipe are communicated with the outside of the fire tube (12), the heat dissipating fin (129) is connected to the outer wall of the light pipe (128), and the heat dissipating fin (129) extends spirally by taking the axis of the light pipe (128) as a shaft.

3. The crude oil water jacket heating furnace according to claim 2, wherein a plurality of the finned tubes (123) are arranged in parallel to and spaced apart from each other in the fire tubes (12).

4. The crude oil water jacket heater according to claim 1, wherein the fire tubes (12) are U-shaped, comprising a radiation section (121) and a convection section (122) connected, the finned tubes (123) being arranged within the convection section (122).

5. The crude oil water jacket heating furnace according to claim 4, wherein the cross section of the radiation section (121) is circular, and the cross section of the convection section (122) is square.

6. The crude oil water jacket heating furnace according to claim 1, wherein one end of the fire tube (12) is provided with a burner mounting port (124), the other end of the fire tube (12) extends out of the furnace body (1) and is provided with an explosion door (125), a chimney (126) and a condensed water discharge port (127), and the condensed water discharge port (127) is provided with a valve.

7. The crude oil water jacket heating furnace according to claim 1, wherein the furnace body (1) is provided with a water inlet (101), a manhole (102) and a drain outlet (104), and the drain outlet (104) is provided with a valve.

8. The crude oil water jacket heater according to claim 1, wherein the crude oil heating coil (11) is comprised of a plurality of stainless steel corrugated tube bundles.

9. The crude oil water jacket heating furnace according to claim 1, wherein the crude oil heating coil (11) is U-shaped, one end of the crude oil heating coil (11) is a crude oil inlet (111), and the other end is a crude oil outlet (112).

10. The crude oil water jacket heating furnace according to claim 1, wherein the crude oil water jacket heating furnace comprises a base (103), and the base (103) is disposed below the furnace body (1).