Fire tube anti-overheating water jacket of heating furnace of oil field united station

Abstract

The utility model relates to the technical field of heating furnaces, and discloses a fire tube anti-overheating water jacket of a heating furnace of an oil field united station, which comprises two sleeves, a water inlet header pipe, two water inlet branch pipes, two water outlet branch pipes and a water outlet header pipe, and is mounted in a fire tube type heating furnace. The utility model further discloses a heating technological process of the oil field united station, namely the technological process that two media, namely oil well produced liquid and heat tracing self-circulation clear water, are simultaneously and independently heated in a fire cylinder type heating furnace provided with the fire tube overheating-preventing water jacket, and an original hot water boiler is omitted. The utility model can effectively avoid the risk that the metal of the fire tube of a fire cylinder type heating furnace commonly used in an oil field united station is overheated, and has the advantages that the original structure of the fire tube does not need to be changed, the structure is simple, the manufacturing cost is low, and equipment maintenance and management are convenient.

Description

Technical field:

[0001] The utility model relates to the technical field of heating furnaces, in particular to a fire tube overheating prevention jacket of a fire tube type heating furnace commonly used in an oil field joint station and a heating process flow. Background technology:

[0002] The joint operation plant for centralized treatment of produced fluids from multiple oil wells in domestic oil production plants is a joint station. The most commonly used type of produced fluid heating furnace in the joint station is the fire tube heating furnace. The main body of the fire tube heating furnace consists of a horizontal pressure shell, a gas burner outside the furnace, a fire tube and a smoke tube inside the furnace, and a chimney outside the furnace. A pair of fire tubes are generally arranged inside the furnace, and each fire tube is connected to a pair of smoke tubes at the tail to increase the heat dissipation area. The fire tube heating furnace is widely used in oil fields due to its simple structure, low cost, and easy maintenance.

[0003] The metal temperature on the surface of the fire tube of the fire tube heating furnace is very high, which makes the oil components with high viscosity in the oil well production fluid easily overheat and coke and deposit on the surface of the fire tube to form a very thick scale layer. The scale layer will not only seriously affect the heat transfer efficiency of the fire tube, but also easily cause the fire tube metal to overheat and overheat, resulting in burning accidents.

[0004] In view of the problem that scaling of the fire tube of the fire tube heating furnace easily leads to overheating, technologies for improving the structure of the fire tube body have been developed, such as the elliptical fire tube for reducing scaling of the fire tube heating furnace (CN219346424U) and the fire tube with improved upper structure of the fire tube heating furnace (CN219346794U). This technology reduces sedimentary scaling such as mud and sand on the upper part of the fire tube by reducing the upper surface area of ​​the fire tube. However, the high-temperature fire tube of this technology is still in contact with the produced fluid, and the scaling problem of overheating and coking of the petroleum components cannot be avoided. In addition, this technology requires a complete transformation of the fire tube structure, which is suitable for newly built heating furnaces, but not for existing heating furnaces.

[0005] In addition, the oilfield joint station not only needs to heat the oil well produced fluid, but also needs to circulate hot water to heat the oil-water settling tanks, sewage tanks and other storage tanks, and also needs hot water for heating in winter. Since the oil well produced fluid and the heated self-circulating clean water cannot be mixed, the joint station needs to be equipped with another hot water boiler, which increases the difficulty of equipment maintenance and production management. Summary of the invention:

[0006] In view of the technical problems mentioned in the above background, the utility model provides a fire tube overheating prevention jacket and a heating process flow, which does not require modification of the fire tube body structure, can not only avoid the problem of fire tube scaling and overheating, but also can heat the oil well produced fluid and the heat-tracing self-circulating clean water of the joint station at the same time.

[0007] Technical Solution 1: The fire tube overheating protection jacket comprises a sleeve 1;

[0008] The sleeve is welded by a cylinder and two annular plates. The diameter of the cylinder is 200mm to 300mm larger than the diameter of the fire tube 8 of the heating furnace, and the length is less than the total length of the fire tube 8 to avoid the part of the fire tube 8 connected to the smoke pipe 9 at the rear; the annular plate blocks the two ends of the cylinder; the sleeve is welded on the outside of the fire tube 8 to form a closed annular space therewith, forming an independent heating space to isolate the high-temperature fire tube 8 from direct contact with the produced liquid; the fire tube type heating furnace generally has two fire tubes 8, and the sleeve of the fire tube anti-overheating water jacket is also correspondingly provided with two.

[0009] Based on the technical solution 1, the solution 2 is obtained by further optimizing: the fire tube overheating protection jacket further includes a water inlet main pipe 2, a water inlet branch pipe 3, a water outlet branch pipe 4, and a water outlet main pipe 5;

[0010] One end of the water inlet main pipe is connected to the return pipe of the heating self-circulating water line of the joint station, and the other end passes through the shell 7 from the lower rear side of the heating furnace to enter the furnace, and is connected to the lower parts of the two sleeves 1 through the two water inlet manifolds, which is used for water inlet to the annular space of the sleeve 1; one end of the water outlet main pipe is connected to the upper water pipe of the heating self-circulating water line of the joint station, and the other end passes through the shell 7 from the upper front side of the heating furnace to enter the furnace, and is connected to the upper parts of the two sleeves 1 through the two water outlet manifolds, which is used for water outlet to the annular space of the sleeve 1.

[0011] Another aspect of the utility model is a process flow in which the oil well produced fluid and the heat-tracing self-circulating clean water are heated separately in two types of heating furnaces in an oilfield joint station. Based on the fire tube anti-superheated water jacket, a process flow is disclosed in which the oil well produced fluid and the heat-tracing self-circulating clean water are heated separately in a fire tube type heating furnace equipped with the fire tube anti-superheated water jacket.

[0012] Among them, the oil well produced liquid is still heated in the original space in the heating furnace; the self-circulating hot water is heated through the independent annular space composed of the sleeve 1 of the fire tube anti-overheating jacket and the fire tube 8, and the heat of the outer surface of the high-temperature fire tube is taken away in time; the original hot water boiler of the joint station is eliminated.

[0013] Compared with the existing background technology, at least one of the above technical solutions adopted in one or more embodiments of this specification can achieve the following beneficial effects:

[0014] (1) The sleeve of the utility model isolates most of the high-temperature sections of the fire tube from direct contact with the produced fluid, thereby avoiding the risk of overheating and coking of the petroleum components on the outer wall of the fire tube, which may easily cause the metal to burn out due to overheating; (2) The installation of the fire tube anti-overheating water jacket in the furnace does not require changing the original structure of the fire tube of the heating furnace, and is not only suitable for newly built heating furnaces, but also for the renovation of old heating furnaces; (3) The fire tube anti-overheating water jacket has a simple structure and low cost, and is suitable for large-scale promotion and application in oil fields; (4) The fire tube type heating furnace of the utility model can simultaneously heat the oil well produced fluid and the heat-tracing self-circulating clean water of the joint station, so that the joint station does not need a separate hot water boiler, which is convenient for equipment maintenance and production management.

[0015] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present invention.

[0016] Other features and aspects of the present invention will become apparent from the following detailed description of exemplary embodiments with reference to the attached drawings. Description of the drawings:

[0017] The drawings herein are incorporated into the specification and constitute a part of the specification. These drawings illustrate embodiments consistent with the present utility model and are used together with the specification to illustrate the technical solution of the present utility model.

[0018] Figure 1 This is a front view of the fire tube overheat protection jacket installed in the heating furnace;

[0019] Figure 2 This is a left side view of the fire tube overheat protection jacket installed in the heating furnace;

[0020] Figure 3 A front view of the fire tube anti-overheating water jacket and the fire tube;

[0021] Figure 4 It is a left view of the fire tube anti-overheating water jacket and the fire tube.

[0022] In the figure: 1-sleeve; 2-water inlet main pipe; 3-water inlet branch pipe; 4-water outlet branch pipe; 5-water outlet main pipe; 6-burner nozzle; 7-shell; 8-fire pipe; 9-smoke pipe; 10-chimney. Specific implementation method:

[0023] Various exemplary embodiments, features and methods of use of the present invention will be described in detail below with reference to the accompanying drawings. The same reference numerals in the accompanying drawings represent elements with the same or similar functions. Although various aspects of the embodiments are shown in the accompanying drawings, the drawings are not necessarily drawn to scale unless otherwise specified.

[0024] In addition, in order to better illustrate the utility model, numerous specific details are given in the specific embodiments below. It should be understood by those skilled in the art that the utility model can also be implemented without certain specific details. In some examples, methods, means and elements well known to those skilled in the art are not described in detail in order to highlight the main purpose of the utility model.

[0025] like Figure 1 to Figure 4 As shown, the fire tube overheating protection jacket of the oilfield joint station heating furnace of the utility model comprises two sleeves 1, a water inlet main pipe 2, two water inlet branches 3, two water outlet branches 4, and a water outlet main pipe 5.

[0026] The sleeve is welded by a cylinder and two annular plates. The diameter of the cylinder is 200mm to 300mm larger than the diameter of the fire tube 8 of the heating furnace, and the length is less than the total length of the fire tube 8 to avoid the part of the fire tube 8 connected to the smoke pipe 9 at the rear; the annular plate blocks the two ends of the cylinder; the sleeve is welded on the outside of the fire tube 8 to form a closed annular space therewith, forming an independent heating space to isolate the high-temperature fire tube 8 from direct contact with the produced liquid; the fire tube type heating furnace generally has two fire tubes 8, and the sleeve of the fire tube anti-overheating water jacket is also correspondingly provided with two.

[0027] One end of the water inlet main pipe is connected to the return pipe of the heating self-circulating water line of the joint station, and the other end passes through the shell 7 from the lower rear side of the heating furnace to enter the furnace, and is connected to the lower parts of the two sleeves 1 through the two water inlet manifolds, which is used for water inlet to the annular space of the sleeve 1; one end of the water outlet main pipe is connected to the upper water pipe of the heating self-circulating water line of the joint station, and the other end passes through the shell 7 from the upper front side of the heating furnace to enter the furnace, and is connected to the upper parts of the two sleeves 1 through the two water outlet manifolds, which is used for water outlet to the annular space of the sleeve 1.

[0028] Another aspect of the utility model is a process flow in which the oil well produced liquid and the heat-tracing self-circulating clean water are heated separately in two types of heating furnaces in an oilfield joint station. Based on the fire tube anti-superheated water jacket, a process flow is disclosed in which the oil well produced liquid and the heat-tracing self-circulating clean water are heated independently in a fire tube type heating furnace equipped with the fire tube anti-superheated water jacket; wherein the oil well produced liquid is still heated in the original space in the heating furnace; the heat-tracing self-circulating clean water is heated through the independent annular space formed by the sleeve 1 of the fire tube anti-superheated water jacket and the fire tube 8, and the heat of the outer surface of the high-temperature fire tube is taken away in time; and the original hot water boiler of the joint station is eliminated.

[0029] The technical principle of the utility model for preventing the fire tube 8 from overheating is as follows: the sleeve 1 is sleeved on the outside of the fire tube 8, and the annular space formed by the sleeve 1 and the fire tube 8 flows with heat-tracing self-circulating clean water, and the outer wall of most high-temperature pipe sections of the fire tube 8 is not in direct contact with the produced liquid, thereby eliminating the problem of overheating, coking and scaling of petroleum components, and the clean water in the annular space has slight scaling and good fluidity, which can quickly take away the surface heat of the fire tube 8, thereby effectively preventing the fire tube 8 from overheating and overheating.

Claims

1. A fire tube overheat protection jacket for a heating furnace at an oilfield joint station, comprising a sleeve (1), characterized in that: The sleeve is welded together by a cylinder and two annular plates. The diameter of the cylinder is 200 mm to 300 mm larger than the diameter of the fire tube (8) of the heating furnace, and the length is less than the total length of the fire tube (8) to avoid the part of the fire tube (8) connected to the smoke tube (9) at the rear. The annular plates seal the two ends of the cylinder. The sleeve is welded on the outside of the fire tube (8) to form a closed annular space therewith, forming an independent heating space to isolate the high-temperature fire tube (8) from direct contact with the produced liquid. The fire tube type heating furnace generally has two fire tubes (8), and the sleeves of the fire tube anti-overheating water jacket are also correspondingly provided with two.

2. The fire tube overheating prevention jacket of the heating furnace of the oilfield joint station according to claim 1 is characterized in that: The fire tube overheating protection jacket further comprises a water inlet main pipe (2), a water inlet branch pipe (3), a water outlet branch pipe (4), and a water outlet main pipe (5); One end of the water inlet main pipe is connected to the return pipe of the heating self-circulating water line of the joint station, and the other end passes through the shell (7) from the lower rear side of the heating furnace to enter the furnace, and is connected to the lower part of the two sleeves (1) through the two water inlet manifolds, which is used for water inlet to the annular space of the sleeve (1); one end of the water outlet main pipe is connected to the upper water pipe of the heating self-circulating water line of the joint station, and the other end passes through the shell (7) from the upper front side of the heating furnace to enter the furnace, and is connected to the upper part of the two sleeves (1) through the two water outlet manifolds, which is used for water outlet to the annular space of the sleeve (1).

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