Skid-mounted high-sulfur-content flash steam pressurization system

Abstract

The skid-mounted high-sulfur-content flash steam pressurization system comprises a skid body base, the skid body base comprises a base table and a steel frame placed on the base table, the steel frame is a rectangular frame body of a cross structure in the shape of a Chinese character'tian ', and a compressor for diaphragm compression is arranged in the middle of the steel frame in the length direction; the compressor is provided with a first-stage membrane head and a second-stage membrane head; the prying body base further comprises a compressor motor which is transversely placed in the length direction of the steel frame. The first-stage heat exchanger and the second-stage heat exchanger are transversely mounted, and the inlet separator, the first-stage separator and the second-stage separator are longitudinally mounted; the skid body base further comprises instruments which are vertically arranged and installed on the instrument support. By designing the whole set of skid-mounted structure and setting the placement position and erection mode of each device, the device can have a better space integration effect and is convenient to overhaul, maintain, transport, hoist and the like, and the purpose of saving cost and space is achieved.

Description

Technical Field

[0001] The invention belongs to the technical field of natural gas development, and in particular relates to a skid-mounted high-sulfur flash steam pressurization system. Background Art

[0002] Among the several components of tail gas, sulfur-containing tail gas is the most concerned. Natural gas processing plants need to pressurize and recover the sulfur-containing tail gas from existing and newly built desulfurization devices to replace the traditional treatment method of flaring the sulfur-containing tail gas.

[0003] It is extremely difficult to pressurize the sulfur-containing tail gas of the desulfurization device. Under the current process conditions, the sulfur-containing tail gas comes from flash gas. The hydrogen sulfide component in the flash gas can reach up to 80%, and it contains water in the component, and the water content can reach 15%. In addition, there are many other media such as methane, and there is a requirement for pressurization. Therefore, more pressurization equipment, separation equipment, heat exchange equipment, and a large number of instruments, pipelines, valves, etc. are needed. If all are installed and set up separately, the requirements for on-site personnel and equipment are high, and accidents are likely to occur due to installation problems, and the matching of pipelines and components caused by placement needs to be considered. Therefore, if the required equipment can be integrated, and its installation, transportation, control, maintenance and overhaul are considered, it will be of great help to improve the production efficiency on site. Summary of the invention

[0004] In response to some or all of the above-mentioned problems, the present invention provides a skid-mounted high-sulfur flash steam boosting system. By designing a complete skid-mounted structure and setting the placement position and installation method of each device, it can have a better spatial integration effect and is convenient for inspection and maintenance as well as lifting for transportation, thereby achieving the purpose of saving cost and space.

[0005] The technical solution of the present invention is as follows: A skid-mounted high-sulfur flash gas boosting system, characterized in that it includes a skid base, the skid base includes a base and a steel frame placed on the base, the steel frame is a rectangular field-shaped cross-structure frame, and a diaphragm compression compressor is provided in the middle of the length direction of the steel frame, the compressor is provided with a primary diaphragm head and a secondary diaphragm head, wherein the primary diaphragm head is placed vertically, and the secondary diaphragm head is placed horizontally along the length direction of the steel frame; the skid base also includes a compressor motor, and the compressor motor is placed horizontally along the length direction of the steel frame; there are also a primary heat exchanger and a secondary heat exchanger installed horizontally, and an inlet separator, a primary separator, and a secondary separator installed longitudinally; the skid base also includes instruments arranged vertically on an instrument bracket; an electric control box is also provided on the outside of the skid base.

[0006] Furthermore, the inlet separator is provided with a pipeline connected to the external high-sulfur gas inlet, and then connected to the first-level membrane head through the pipeline; the first-level heat exchanger is respectively connected to the first-level membrane head and the first-level heat exchanger through different pipelines; the different pipelines of the first-level heat exchanger are respectively connected to the first-level heat exchanger and the second-level membrane head; the second-level heat exchanger is respectively connected to the second-level membrane head and the second-level separator through different pipelines; the different pipelines of the second-level separator are respectively connected to the second-level heat exchanger, and are also connected to the high-sulfur gas outlet for external transportation through an external transmission pipeline.

[0007] Furthermore, according to the claim, a skid-mounted high-sulfur flash gas boosting system is characterized in that it is also provided with an oil temperature cooling system, including a hand pump, two sets of circulation pipelines, two filters, an oil heater, an oil heat exchanger, and a temperature sensor, wherein the two sets of circulation pipelines, one set is connected in series with the first-level membrane head and the second-level membrane head and circulates through a hand pump as circulation pipe No. 1, and the other set circulates the heat of the oil through the oil heat exchanger and then sends it to the inlet separator, the first-level separator, the second-level separator, the first-level heat exchanger, and the second-level heat exchanger.

[0008] Furthermore, the inlet separator, the first-stage separator and the second-stage separator are all fixed on the skid base through a metal mounting plate installed on a steel frame, and the heights of the inlet separator, the first-stage separator and the second-stage separator are flush with the first-stage membrane head. The first-stage heat exchanger and the second-stage heat exchanger are both suspended horizontally through vertically arranged metal brackets, and their heights are flush with the first-stage membrane head.

[0009] Furthermore, the secondary membrane head is placed horizontally along the length direction of the steel frame and is located in the central part of the length direction. A mesh metal grille is provided near the end of the secondary membrane head as a maintenance station plate, and the maintenance station plate is fixed on the steel frame; the first-level separator is arranged on the side of the compressor motor, the inlet separator is arranged on the side of the first-level separator away from the compressor motor and close to the edge of the steel frame, and the secondary separator is arranged near the maintenance station plate; the instrument bracket is arranged on the other side of the compressor motor; the first-level heat exchanger and the second-level heat exchanger are arranged between the inlet separator and the second-level separator, wherein the first-level heat exchanger is located near the side of the second-level separator.

[0010] Furthermore, the inlet separator, the first-stage separator, and the second-stage separator are all provided with pipes and connected to an external vent pipe. The vent pipe is arranged at a height higher than the first-stage separator, the second-stage separator, and the second-stage membrane head, and is supported and fixed by a metal bracket installed on a steel frame.

[0011] Furthermore, the inlet separator, the first-stage separator, and the second-stage separator are all provided with pipes and connected to an external sewage pipe. The sewage pipe is arranged in the middle of the steel frame. Because it is located below the inlet separator, the first-stage separator, and the second-stage separator, the sewage can be discharged under the action of gravity.

[0012] Furthermore, the instrument bracket is composed of two parts of an L-shaped structure, each part is provided with multiple rows of cross bars for placing multiple instruments and junction boxes, and the instrument bracket and the control box are located at one end and are staggered along the length and width of the steel frame.

[0013] Furthermore, the brackets of the instrument bracket are all detachable structures, and the height and width of each layer are set to different sizes and positions as needed. At the same time, a space is maintained in the L-shaped structure to accommodate auxiliary equipment. When other auxiliary equipment is not installed, counterweights can be placed for counterweight considerations.

[0014] Furthermore, detachable hanging hole plates are provided at the four corners of the steel frame, and the steel frame is provided with at least three hanging points in the installation area of ​​the hanging hole plates, and the bottom of the hanging hole plates is connected to and fixed to the hanging points by reinforcing bolts.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The present invention arranges an inlet separator, a primary gas-liquid separator and a secondary gas-liquid separator. The pure gas after the sulfur-containing flash gas undergoes three gas-liquid separations is discharged from the external transmission pipeline, and the gas generated by excessive pressure is discharged from the high-sulfur gas outlet at the top. At the same time, sewage is also discharged through the sewage pipe arranged at the bottom, forming a three-dimensional longitudinal spatial structure of the skid body.

[0016] The present invention integrates all equipment and pipelines into a set of skid base and divides the skid base into two parts, which can not only ensure stable connection but also keep the bottom convenient for sewage discharge. At the same time, the equipment above can be evenly distributed according to reasonable counterweight, which is convenient for hoisting during transportation. Even if some counterweights are inappropriate during hoisting, the hoisting level can be achieved by adjusting the lifting points or adding counterweights, so that the entire skid can be transported in a unified manner. When individual equipment needs to be repaired, due to the reasonable arrangement and setting, the outside can be repaired from the periphery, and the side close to the inside can be inspected and repaired through the maintenance station board, which is more convenient for on-site implementation and operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional diagram of the structure schematic diagram of the skid-mounted supercharging system of the present invention.

[0018] Figure 2 for Figure 1 Another angle of the stereogram.

[0019] Figure 3 for Figure 1 Top view of the .

[0020] Figure 4 A detailed enlargement of one side of the compressor area. DETAILED DESCRIPTION

[0021] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments. It should be noted that the embodiments and features in the embodiments of the present application can be combined with each other without conflict.

[0022] In the description of the present invention, it is necessary to understand that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", "bottom", "top", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0023] like Figure 1-4 As shown, a skid-mounted high-sulfur flash gas boosting system is characterized in that it includes a skid body base 1, the skid body base 1 includes a base 102 and a steel frame 101 placed on the base 102, wherein the steel frame 101 can be placed on the base 102, the base 102 is a cement base, or a part of the bottom surface of the steel frame 101 can be cast and embedded in the base 102, the steel frame 101 is a rectangular field-shaped cross structure frame, and a diaphragm compression compressor 2 is provided in the middle of the length direction of the steel frame 101, and the compressor 2 is provided with a primary membrane head 201 and a secondary membrane head 202, wherein the primary membrane head 2 01 is placed vertically, and the secondary membrane head 202 is placed horizontally along the length direction of the steel frame 101; the skid base 1 also includes a compressor motor 203, and the compressor motor 203 is placed horizontally along the length direction of the steel frame 101; there are also horizontally installed primary heat exchangers 7 and secondary heat exchangers 8, as well as longitudinally installed inlet separators 4, primary separators 5, and secondary separators 6; the skid base 1 also includes instruments vertically arranged and installed on the instrument bracket 9; an electric control box 3 is also provided on the outside of the skid base 1, and the position of the electric control box 3 can be set outside the skid base 1 or farther away to facilitate manual operation.

[0024] The inlet separator 4 is provided with a pipeline connected to an external high-sulfur gas inlet, which can be directly connected to the external high-sulfur gas inlet pipeline through a flange, and then connected to the first-level membrane head 201 through a pipeline; the first-level heat exchanger 7 is respectively connected to the first-level membrane head 201 and the first-level heat exchanger 7 through different pipelines; the different pipelines of the first-level heat exchanger 7 are respectively connected to the first-level heat exchanger 7 and the second-level membrane head 202; the second-level heat exchanger 8 is respectively connected to the second-level membrane head 202 and the second-level separator 6 through different pipelines; the different pipelines of the second-level separator 6 are respectively connected to the second-level heat exchanger 8, and are also connected to the high-sulfur gas outlet for external transmission through an external transmission pipeline. Similarly, the outlet can also be connected to the external transmission pipeline through the flange at the end of the external transmission pipeline.

[0025] Preferably, in the present skid, an oil temperature cooling system is also provided, including a hand pump 13, two sets of circulation pipelines, two filters 12, an oil heater 14, an oil heat exchanger, and a temperature sensor. The two sets of circulation pipelines, one set of which is connected in series with the primary membrane head 201 and the secondary membrane head 202 and circulates through the hand pump 13, serving as circulation pipe No. 1, and the other set of which circulates the heat of the oil through the oil heat exchanger and then sends it to the inlet separator 4, the primary separator 5, the secondary separator 6, the primary heat exchanger 7, and the secondary heat exchanger 8. Among them, the filter 12, the oil heater 14, the oil heat exchanger, and the temperature sensor are all installed on the side of the compressor 2 facing the edge of the skid, for easy maintenance and repair.

[0026] The inlet separator 4, the first-stage separator 5, and the second-stage separator 6 are all fixed on the skid base 1 through a metal mounting plate installed on the steel frame 101, and the height of the inlet separator 4, the first-stage separator 5, and the second-stage separator 6 is flush with the first-stage membrane head 201. The first-stage heat exchanger 7 and the second-stage heat exchanger 8 are both suspended horizontally through a vertically arranged metal bracket, and the height is flush with the first-stage membrane head 201.

[0027] The secondary membrane head 202 is placed horizontally along the length direction of the steel frame 101 and is located in the central part of the length direction. A mesh metal grille is provided as a maintenance station plate 10 near the end of the secondary membrane head, and the maintenance station plate 10 is fixed on the steel frame 101; the first-level separator 5 is arranged on the side of the compressor motor 203, the inlet separator 4 is arranged on the side of the first-level separator 5 away from the compressor motor 203 and close to the edge of the steel frame 101, and the secondary separator 6 is arranged near the maintenance station plate 10; the instrument bracket 9 is arranged on the other side of the compressor motor 203; the first-level heat exchanger 7 and the second-level heat exchanger 8 are arranged between the inlet separator 4 and the second-level separator 6, wherein the first-level heat exchanger 7 is located near the side of the second-level separator 6.

[0028] The inlet separator 4, the primary separator 5, and the secondary separator 6 are all provided with pipelines and connected to an external vent pipe 11. The vent pipe 11 is arranged at a height higher than the primary separator 5, the secondary separator 6, and the secondary membrane head 202, and is supported and fixed by a metal bracket installed on the steel frame 101. Such a design allows the vent pipe 11 to be better connected to the external vent pipe for venting treatment, and at a high position, it is also convenient for the external recovery mechanism to be connected.

[0029] The inlet separator 4, the first-stage separator 5, and the second-stage separator 6 are all provided with pipes and connected to an external sewage pipe. The sewage pipe is arranged in the middle of the steel frame 101. Because it is located below the inlet separator 4, the first-stage separator 5, and the second-stage separator 6, the sewage can be discharged under the action of gravity. Since the steel frame 101 itself has a certain height, it is not necessary to set up an additional water pump. Moreover, due to its lower position, its thermal insulation requirements are relatively low. It can utilize the temperature of the equipment above for natural insulation to a certain extent, which helps to save insulation resources in winter.

[0030] The instrument bracket 9 is composed of two parts of an L-shaped structure, each part is provided with multiple rows of cross bars for placing multiple instruments and junction boxes, and the instrument bracket 9 and the control box 3 are located at one end and are staggered along the length and width of the steel frame 101.

[0031] The brackets of the instrument bracket 9 are all detachable structures, and the height and width of each layer are set to different sizes and positions as needed. At the same time, a space is maintained in the space of the L-shaped structure to accommodate auxiliary equipment. When other auxiliary equipment is not installed, a counterweight can be placed for counterweight considerations. Specifically, the counterweight needs to be used during transportation to prevent the carriage from tilting. The counterweight can be a spare device or part, which is placed after packaging. After arriving at the destination, it does not need to be used and is stored in a warehouse.

[0032] At the four corners of the steel frame 101, there are detachable hanging holes 15. The steel frame 101 is provided with at least three hanging points in the installation area of ​​the hanging holes 15. The bottom of the hanging holes 15 is connected to the hanging points and fixed by reinforcing bolts. Specifically, the hanging holes 15 are required when loading and installing on the base 102. At this time, it is necessary to ensure that the center of gravity of the hanging point is stable. If there is a deviation due to various reasons, the position of the hanging holes 15 can be immediately lowered and readjusted, so as to achieve the purpose of stabilizing the center of gravity of the hoisting.

[0033] The installation and use of the present invention comprises the following steps: During installation, first, the present invention can be assembled in the factory and placed strictly according to the above-mentioned arrangement and installed on the steel frame 101 to form a reasonable counterweight. Then the hanging hole plate 105 on the steel frame 101 is installed to a position that meets the counterweight for hoisting and transportation to ensure the safety of the process. After arriving at the destination, it is hoisted onto the base 102 and connected to the pipelines with other equipment. If necessary, secondary pouring can be performed to ensure fixation and stability.

[0034] When in use, after the flash gas is fed in, it is condensed and separated in the inlet separator 4, and the separated water is discharged from the drain pipe at the bottom of the skid body. At the same time, the high-sulfur flash gas after the water is removed enters the first-level membrane head 201 for pressurization, and is sent to the first-level heat exchanger 7 for cooling, and then sent to the first-level separator 5 to remove water again, and the removed water is also discharged. The high-sulfur gas after the water is removed enters the second-level membrane head 202 for pressurization, and then is sent to the second-level heat exchanger 8. After the second-level pressure increase, it is sent to the second-level heat exchanger 8, and then enters the second-level separator 6 and is discharged from the external transmission pipeline; Since the temperature will increase after the first-level membrane head 201 and the second-level membrane head 202 are pressurized during use, which will also affect the function of the equipment itself, a cooling cycle is required. The heat generated is generally directly dissipated and discharged. However, since the processing stations are generally outdoors, the temperature is very low in winter, which may cause ice blockage in the equipment. Therefore, through pipeline circulation, this part of the heat can be used to insulate other equipment, and the heat transfer medium can be delivered to each device through the circulating pipeline, thereby realizing the utilization and recovery of heat energy.

[0035] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technician familiar with the profession can make some changes or modifications to equivalent embodiments of equivalent changes using the technical contents disclosed above without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the scope of the technical solution of the present invention.

Claims

1. A skid-mounted high-sulfur flash steam boosting system, characterized in that: The invention comprises a skid body base (1), wherein the skid body base (1) comprises a base (102) and a steel frame (101) placed on the base (102), wherein the steel frame (101) is a rectangular cross-shaped structure frame, and a diaphragm compression compressor (2) is provided in the middle of the length direction of the steel frame (101), and the compressor (2) is provided with a primary membrane head (201) and a secondary membrane head (202), wherein the primary membrane head (201) is placed vertically, and the secondary membrane head (202) is placed along the steel frame (101). ) is placed horizontally in the length direction; the skid base (1) also includes a compressor motor (203), which is placed horizontally along the length direction of the steel frame (101); there are also a first-stage heat exchanger (7) and a second-stage heat exchanger (8) installed horizontally, and an inlet separator (4), a first-stage separator (5), and a second-stage separator (6) installed vertically; the skid base (1) also includes instruments arranged vertically on an instrument bracket (9); and an electric control box is also provided on the outer side of the skid base (1).

2. The skid-mounted high-sulfur flash steam boosting system according to claim 1, characterized in that: The inlet separator (4) is provided with a pipeline connected to an external high-sulfur gas inlet, and then connected to the first-stage membrane head (201) through a pipeline; the first-stage heat exchanger (7) is respectively connected to the first-stage membrane head (201) and the first-stage heat exchanger (7) through different pipelines; the first-stage heat exchanger (7) has different pipelines connected to the first-stage heat exchanger (7) and the second-stage membrane head (202); the second-stage heat exchanger (8) is respectively connected to the second-stage membrane head (202) and the second-stage separator (6) through different pipelines; the second-stage separator (6) has different pipelines connected to the second-stage heat exchanger (8), and is also connected to the high-sulfur gas outlet for external transmission through an external transmission pipeline.

3. The skid-mounted high-sulfur flash gas boosting system according to claim 2, characterized in that: A skid-mounted high-sulfur flash steam boosting system according to claim 2, characterized in that it is also provided with an oil temperature cooling system, including a hand pump (13), two sets of circulation pipelines, two filters (12), an oil heater (14), an oil heat exchanger, and a temperature sensor, wherein one of the two sets of circulation pipelines is connected in series with the primary membrane head (201) and the secondary membrane head (202) and circulated through the hand pump (13) as circulation pipe No. 1, and the other set circulates the heat of the oil through the oil heat exchanger and then sends it to the inlet separator (4), the primary separator (5), the secondary separator (6), the primary heat exchanger (7), and the secondary heat exchanger (8).

4. The skid-mounted high-sulfur flash gas boosting system according to claim 3, characterized in that: The inlet separator (4), the first-stage separator (5), and the second-stage separator (6) are all fixed on the skid base (1) via a metal mounting plate mounted on the steel frame (101), and the heights of the inlet separator (4), the first-stage separator (5), and the second-stage separator (6) are located flush with the first-stage membrane head (201). The first-stage heat exchanger (7) and the second-stage heat exchanger (8) are both suspended horizontally via a vertically mounted metal bracket, and their heights are located flush with the first-stage membrane head (201).

5. The skid-mounted high-sulfur flash steam boosting system according to claim 4, characterized in that: The secondary membrane head (202) is horizontally placed along the length direction of the steel frame (101) and is located in the central part of the length direction. A mesh metal grille is provided near the end of the secondary membrane head as a maintenance station plate (10), and the maintenance station plate (10) is fixed to the steel frame (101); the primary separator (5) is arranged on the side of the inlet separator (4) arranged on the compressor motor (203), the inlet separator (4) is arranged on the side of the primary separator (5) away from the compressor motor (203) and close to the edge of the steel frame (101), and the secondary separator (6) is arranged near the maintenance station plate (10); the instrument bracket (9) is arranged on the other side of the compressor motor (203); the primary heat exchanger (7) and the secondary heat exchanger (8) are arranged between the inlet separator (4) and the secondary separator (6), wherein the primary heat exchanger (7) is located near the side of the secondary separator (6).

6. The skid-mounted high-sulfur flash steam boosting system according to claim 4, characterized in that: The inlet separator (4), the first-stage separator (5), and the second-stage separator (6) are all provided with pipelines and connected to an external vent pipe (11). The vent pipe (11) is arranged at a height higher than the first-stage separator (5), the second-stage separator (6), and the second-stage membrane head (202), and is supported and fixed by a metal bracket installed on the steel frame (101).

7. The skid-mounted high-sulfur flash steam boosting system according to claim 4, characterized in that: The inlet separator (4), the first-stage separator (5), and the second-stage separator (6) are all provided with pipelines and connected to an external sewage pipe. The sewage pipe is arranged in the middle of the steel frame (101). Since it is located below the inlet separator (4), the first-stage separator (5), and the second-stage separator (6), sewage can be discharged under the action of gravity.

8. The skid-mounted high-sulfur flash gas boosting system according to claim 7, characterized in that: The instrument bracket (9) is composed of two parts of an L-shaped structure, each part being provided with multiple rows of cross bars for accommodating multiple instruments and junction boxes, and the instrument bracket (9) and the control box (3) are located at one end and are staggered along the length and width of the steel frame (101).

9. The skid-mounted high-sulfur flash gas boosting system according to claim 8, characterized in that: The instrument bracket (9) is a detachable structure. The height and width of each layer are set to different sizes and positions according to needs. At the same time, a space is maintained in the L-shaped structure to accommodate auxiliary equipment. When other auxiliary equipment is not installed, a counterweight can be placed for counterweight considerations.

10. The skid-mounted high-sulfur flash gas boosting system according to claim 9, characterized in that: Removable hanging hole plates (15) are provided at the four corners of the steel frame (101), and the steel frame (101) is provided with at least three hanging points in the installation area of ​​the hanging hole plates (15), and the bottom of the hanging hole plates (15) is connected to the hanging points and fixed by reinforcing bolts.

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