High liquid level treatment system for suction tank of dry gas compressor

By designing a high-level treatment system for suction tank of dry air compressor and using combination valves, regulating valves and other control valves, the problem of rising tank level between dry air compressor sections is solved, and the liquid level is stable control is achieved, reducing losses .

CN222478882UActive Publication Date: 2025-02-14HENGLI PETROCHEMICAL (DALIAN) REFINING & CHEM CO LTD
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Patent Information

Application Number
CN202421221155.3
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-05-31
Publication Date
2025-02-14
Estimated Expiration
2034-05-31

AI Technical Summary

Technical Problem

Due to the changes in dry gas components of the refinery, the liquid phase condensed in the tank between the dry gas compressor sections has increased greatly, resulting in the original tank bottom discharge line being unable to control the liquid level. When the liquid level rises, the torch needs to be discharged to prevent interlocking and stopping, which affects compression The machine is operating normally.

Method used

A high-level treatment system for suction tank of dry air compressor is designed, including components such as distorted dry gas booster, first and second stage suction tanks of dry air compressors, aftercooler, alkaline washing tower and quench water tower, etc., through the installation Combination valves, regulating valves and one-way combination valves can achieve effective liquid phase treatment and stable liquid level control.

Benefits of technology

The liquid level of the first and second sections of the dry air compressor is achieved, which avoids the rise in the liquid level, eliminates the risk of interlocking parking, and reduces the losses caused by material discharge torch.

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Patent Text Reader

Abstract

The utility model provides a high liquid level processing system for a suction tank of a dry gas compressor. Comprising a disproportionated dry gas supercharger, a dry gas compressor first-section suction tank, a refinery dry gas compressor first section, a dry gas compressor first-section aftercooler, a dry gas compressor second-section suction tank, a refinery dry gas compressor second section, a dry gas compressor second-section aftercooler, a dry gas compressor second-section discharge tank, an alkaline tower and a quench water tower, a boundary refinery dry gas pipeline is connected to an inlet of a first-section suction tank of the dry gas compressor; and the boundary disproportionation dry gas pipeline is connected to a boundary refinery dry gas pipeline through a disproportionation dry gas supercharger. The liquid level of the first-section suction tank of the dry gas compressor and the liquid level of the second-section suction tank of the dry gas compressor are controlled stably, the liquid level does not rise any more, the risk of high-liquid-level interlocking shutdown of the tanks between the sections of the dry gas compressor is eliminated, and loss caused by the fact that materials discharge torches is reduced.
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Description

Technical Field

[0001] The utility model mainly relates to a high liquid level processing system for a dry gas compressor suction tank. Background Art

[0002] Due to changes in the refinery's dry gas composition, the condensed liquid phase in the interstage tank of the dry gas compressor has increased significantly. The liquid level in the interstage tank can no longer be controlled through the original tank bottom discharge line. When the liquid level is high, the flare can only be discharged to prevent the dry gas compressor from interlocking and stopping.

[0003] The liquid level LC18001 of the first suction tank of the dry gas compressor and the liquid level LC18006 of the second suction tank of the dry gas compressor often rise to about 60%, affecting the normal operation of the dry gas compressor. Utility Model Content

[0004] The utility model aims to provide a high liquid level processing system for a dry gas compressor suction tank, which can effectively control the liquid level to be stable and prevent the liquid level from rising, thereby reducing the loss caused by the material discharge torch.

[0005] In order to overcome the above technical problems, a dry gas compressor suction tank high liquid level processing system is provided, comprising: a manifold dry gas booster, a first suction tank of a dry gas compressor, a first stage of a refinery dry gas compressor, a first stage aftercooler of a dry gas compressor, a second stage suction tank of a dry gas compressor, a second stage of a refinery dry gas compressor, a second stage aftercooler of a dry gas compressor, a second stage discharge tank of a dry gas compressor, an alkali washing tower and a quenching water tower, the boundary refinery dry gas pipeline is connected to the inlet of the first suction tank of the dry gas compressor; the boundary manifold dry gas pipeline is connected to the boundary refinery dry gas pipeline through the manifold dry gas booster; the gas phase outlet pipeline of the first suction tank of the dry gas compressor is connected in sequence to the first stage of the refinery dry gas compressor, and the gas phase outlet pipeline of the first suction tank of the dry gas compressor is connected ... and the first stage aftercooler of the dry gas compressor are connected to the first inlet of the second stage suction tank of the dry gas compressor; the liquid phase outlet pipeline of the first stage suction tank of the dry gas compressor is connected to the main pipeline of the quenching water tower inlet; the gas phase outlet pipeline of the second stage suction tank of the dry gas compressor is connected to the second stage of the refinery dry gas compressor and the second stage aftercooler of the dry gas compressor in sequence and connected to the inlet of the second stage discharge tank of the dry gas compressor; the liquid phase outlet pipeline of the second stage suction tank of the dry gas compressor is connected to the main pipeline of the quenching water tower inlet; the gas phase outlet pipeline of the second stage discharge tank of the dry gas compressor is connected to the inlet of the alkali washing tower; the liquid phase outlet pipeline of the second stage discharge tank of the dry gas compressor is connected to the second inlet of the second stage suction tank of the dry gas compressor.

[0006] Furthermore, a combination valve 1 and a combination valve 2 are provided on the boundary refinery dry gas pipeline.

[0007] Furthermore, a combination valve three is provided at the inlet of the manifold dry gas supercharger; and an outlet valve is provided at the outlet of the manifold dry gas supercharger.

[0008] Furthermore, a regulating valve group 1 is arranged on the liquid phase outlet pipeline of the first suction tank of the dry gas compressor.

[0009] Furthermore, a first crossover line is provided between the first-stage suction tank of the dry gas compressor and the second-stage suction tank of the dry gas compressor; and a second regulating valve group is provided on the first crossover line.

[0010] Furthermore, a combination valve four is provided at the inlet of the liquid phase outlet pipeline of the second stage suction tank of the dry gas compressor; a regulating valve group three is provided on the liquid phase outlet pipeline of the second stage suction tank of the dry gas compressor; and a one-way combination valve is provided at the outlet of the liquid phase outlet pipeline of the second stage suction tank of the dry gas compressor.

[0011] Furthermore, a bypass pipeline is provided at the outlet of the second stage of the refinery dry gas compressor and connected to the inlet of the second stage discharge tank of the dry gas compressor; a diaphragm valve is provided on the bypass pipeline.

[0012] Furthermore, a regulating valve group 4 is arranged on the liquid phase outlet pipeline of the second-stage discharge tank of the dry gas compressor.

[0013] Furthermore, a water washing circulation line, a strong alkali circulation line and a weak alkali circulation line are arranged on the alkali washing tower.

[0014] Furthermore, a water washing centrifugal pump and a water replenishing line are sequentially arranged on the water washing circulation line; a strong alkali centrifugal pump and an alkali replenishing line are sequentially arranged on the strong alkali circulation line; and a weak alkali centrifugal pump is arranged on the weak alkali circulation line.

[0015] Beneficial effects: The utility model realizes stable liquid level control of the first-stage suction tank and the second-stage suction tank of the dry gas compressor, and the liquid level no longer rises, eliminates the risk of high liquid level interlocking shutdown of the inter-stage tank of the dry gas compressor, and reduces the loss caused by material discharge flare. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the process of the utility model;

[0017] Figure 2 It is a schematic diagram of a partial A process of the utility model;

[0018] Figure 3 It is a partial B flow diagram of the utility model;

[0019] Figure 4 It is a partial C flow diagram of the utility model;

[0020] In the figure: 1. Dry gas compressor first stage suction tank, 2. Dry gas compressor second stage suction tank, 3. Dry gas compressor second stage discharge tank, 4. Alkali washing tower, 5. Rapid cooling water tower, 6. Disproportionate dry gas booster, 7. Water washing centrifugal pump, 8. Strong alkali centrifugal pump, 9. Weak alkali centrifugal pump, 11. Refinery dry gas compressor first stage, 12. Dry gas compressor first stage aftercooler, 21. Refinery dry gas compressor second stage, 22. Dry gas compressor second stage aftercooler, A1. Combination valve one, A2. Combination valve two, A3. Combination valve three, A4. Combination valve four, B1. Control valve group one, B2. Control valve group two, B3. Control valve group three, B4. Control valve group four, C1. Outlet valve, D1. One-way combination valve, E1. Diaphragm valve. DETAILED DESCRIPTION

[0021] Typical embodiments that embody the features and advantages of the present invention will be described in detail in the following description. It should be understood that the present invention can have various changes in different embodiments without departing from the scope of the present invention, and the descriptions and illustrations therein are essentially for illustrative purposes rather than for limiting the present invention.

[0022] In order to further illustrate the principle and structure of the present utility model, the preferred embodiments of the present utility model are now described in detail with reference to the accompanying drawings.

[0023] Reference Figure 1-4 A high liquid level treatment system for a dry gas compressor suction tank comprises: a manifold dry gas booster 6, a first suction tank 1 of a dry gas compressor, a first stage 11 of a refinery dry gas compressor, a first stage aftercooler 12 of a dry gas compressor, a second stage suction tank 2 of a dry gas compressor, a second stage 21 of a refinery dry gas compressor, a second stage aftercooler 22 of a dry gas compressor, a second stage discharge tank 3 of a dry gas compressor, an alkali washing tower 4 and a quenching water tower 5, wherein the boundary refinery dry gas pipeline is connected to the inlet of the first stage suction tank 1 of the dry gas compressor; the boundary refinery manifold dry gas pipeline is connected to the boundary refinery dry gas pipeline through the manifold dry gas booster 6; the gas phase outlet pipeline of the first stage suction tank of the dry gas compressor is connected in sequence to the first stage 11 of the refinery dry gas compressor and the dry gas The compressor first stage aftercooler 12 is connected to the inlet one of the dry gas compressor second stage suction tank 2; the liquid phase outlet pipeline of the dry gas compressor first stage suction tank is connected to the main inlet pipeline of the quenching water tower 5; the gas phase outlet pipeline of the dry gas compressor second stage suction tank is connected in sequence to the refinery dry gas compressor second stage 21 and the dry gas compressor second stage aftercooler 22 and connected to the inlet of the dry gas compressor second stage discharge tank 3; the liquid phase outlet pipeline of the dry gas compressor second stage suction tank is connected to the main inlet pipeline of the quenching water tower; the gas phase outlet pipeline of the dry gas compressor second stage discharge tank is connected to the inlet of the alkali washing tower 4; the liquid phase outlet pipeline of the dry gas compressor second stage discharge tank is connected to the inlet two of the dry gas compressor second stage suction tank 3.

[0024] The function of the first stage and second stage of the refinery dry gas compressor is to increase the pressure of the refinery dry gas; the function of the first stage suction tank and second stage suction tank of the dry gas compressor is to separate the gas and liquid of the refinery dry gas and prevent the liquid phase from entering the first stage and second stage of the refinery dry gas compressor; the function of the quenching water tower is to reduce the temperature of the cracking gas and recover heat; the function of the alkali washing tower is to remove hydrogen sulfide and carbon dioxide in the refinery dry gas through alkali washing.

[0025] Furthermore, a combination valve 1 B1 and a combination valve 2 B2 are provided on the boundary refinery dry gas pipeline.

[0026] Furthermore, a combination valve three B3 is provided at the inlet of the manifold dry gas supercharger; and an outlet valve C1 is provided at the outlet of the manifold dry gas supercharger.

[0027] Furthermore, a regulating valve group B1 is provided on the liquid phase outlet pipeline of the first suction tank of the dry gas compressor.

[0028] Furthermore, a crossover line 1 is arranged between the first-stage suction tank 1 of the dry gas compressor and the second-stage suction tank 2 of the dry gas compressor; and a regulating valve group 2 B2 is arranged on the crossover line 1.

[0029] Furthermore, a combination valve four A4 is provided at the inlet of the liquid phase outlet pipeline of the second-stage suction tank of the dry gas compressor; a regulating valve group three B3 is provided on the liquid phase outlet pipeline of the second-stage suction tank of the dry gas compressor; and a one-way combination valve D1 is provided at the outlet of the liquid phase outlet pipeline of the second-stage suction tank of the dry gas compressor.

[0030] The liquid phase outlet pipeline of the second-stage suction tank of the dry gas compressor is equipped with a regulating valve group 3, which can realize automatic control and is equipped with a one-way valve to prevent material backflow, so that the liquid phase at the bottom of the first-stage suction tank and the second-stage suction tank of the dry gas compressor can be directly sent to the quenching water tower.

[0031] Furthermore, a shunt pipeline is provided at the outlet of the second stage of the refinery dry gas compressor and connected to the inlet of the second stage discharge tank 2 of the dry gas compressor; a diaphragm valve E1 is provided on the shunt pipeline.

[0032] Furthermore, a regulating valve group 4 is arranged on the liquid phase outlet pipeline of the second stage discharge tank of the dry gas compressor; the gas phase temperature at the top of the second stage discharge tank of the dry gas compressor is controlled at about 50°C by the bypass flow regulating valve of the second stage aftercooler of the dry gas compressor, which is the ideal reaction temperature of the alkali washing tower.

[0033] Furthermore, a water washing circulation line, a strong alkali circulation line and a weak alkali circulation line are arranged on the alkali washing tower.

[0034] Furthermore, a water washing centrifugal pump 7 and a water replenishing line are sequentially arranged on the water washing circulation line; a strong alkali centrifugal pump 8 and an alkali replenishing line are sequentially arranged on the strong alkali circulation line; and a weak alkali centrifugal pump 9 is arranged on the weak alkali circulation line.

[0035] Although the utility model has been described with reference to several typical embodiments, it should be understood that the terms used are illustrative and exemplary, rather than restrictive. Since the utility model can be implemented in a variety of forms without departing from the spirit or essence of the utility model, it should be understood that the above-mentioned embodiments are not limited to any of the aforementioned details, but should be widely interpreted within the spirit and scope defined by the attached claims, so all changes and modifications falling within the scope of the claims or their equivalents should be covered by the attached claims.

Claims

1. A high liquid level treatment system for a dry gas compressor suction tank, characterized in that: include: The manifold dry gas booster, the first suction tank of the dry gas compressor, the first stage of the refinery dry gas compressor, the first stage of the dry gas compressor aftercooler, the second suction tank of the dry gas compressor, the second stage of the refinery dry gas compressor, the second stage of the dry gas compressor aftercooler, the second stage of the dry gas compressor discharge tank, the alkali washing tower and the quenching water tower; the boundary refinery dry gas pipeline is connected to the inlet of the first suction tank of the dry gas compressor; the boundary manifold dry gas pipeline is connected to the boundary refinery dry gas pipeline through the manifold dry gas booster; the gas phase outlet pipeline of the first suction tank of the dry gas compressor is connected to the first stage of the refinery dry gas compressor and the first stage aftercooler of the dry gas compressor in sequence to the dry gas The inlet one of the second stage suction tank of the compressor; the liquid phase outlet pipeline of the first stage suction tank of the dry gas compressor is connected to the main pipeline of the quenching water tower inlet; the gas phase outlet pipeline of the second stage suction tank of the dry gas compressor is connected in sequence to the second stage of the refinery dry gas compressor and the second stage aftercooler of the dry gas compressor to the inlet of the second stage discharge tank of the dry gas compressor; the liquid phase outlet pipeline of the second stage suction tank of the dry gas compressor is connected to the main pipeline of the quenching water tower inlet; the gas phase outlet pipeline of the second stage discharge tank of the dry gas compressor is connected to the inlet of the alkali washing tower; the liquid phase outlet pipeline of the second stage discharge tank of the dry gas compressor is connected to the inlet two of the second stage suction tank of the dry gas compressor.

2. According to claim 1, a high liquid level treatment system for a dry gas compressor suction tank is characterized in that: Combination valve 1 and combination valve 2 are arranged on the boundary refinery dry gas pipeline.

3. According to claim 1, a high liquid level treatment system for a dry gas compressor suction tank is characterized in that: A combination valve three is arranged at the inlet of the manifold dry gas supercharger; an outlet valve is arranged at the outlet of the manifold dry gas supercharger.

4. According to claim 1, a high liquid level treatment system for a dry gas compressor suction tank is characterized in that: A regulating valve group 1 is arranged on the liquid phase outlet pipeline of the first suction tank of the dry gas compressor.

5. According to claim 1, a high liquid level treatment system for a dry gas compressor suction tank is characterized in that: A first crossover line is arranged between the first-stage suction tank of the dry gas compressor and the second-stage suction tank of the dry gas compressor; and a second regulating valve group is arranged on the first crossover line.

6. A dry gas compressor suction tank high liquid level processing system according to claim 1, characterized in that: A combination valve four is arranged at the inlet of the liquid phase outlet pipeline of the second-stage suction tank of the dry gas compressor; a regulating valve group three is arranged on the liquid phase outlet pipeline of the second-stage suction tank of the dry gas compressor; a one-way combination valve is arranged at the outlet of the liquid phase outlet pipeline of the second-stage suction tank of the dry gas compressor.

7. The high liquid level treatment system for the dry gas compressor suction tank according to claim 1, characterized in that: A shunt pipeline is provided at the outlet of the second stage of the refinery dry gas compressor and connected to the inlet of the second stage discharge tank of the dry gas compressor; a diaphragm valve is provided on the shunt pipeline.

8. The high liquid level treatment system for the dry gas compressor suction tank according to claim 1, characterized in that: A regulating valve group 4 is arranged on the liquid phase outlet pipeline of the second-stage discharge tank of the dry gas compressor.

9. A dry gas compressor suction tank high liquid level processing system according to claim 1, characterized in that: The alkali washing tower is provided with a water washing circulation line, a strong alkali circulation line and a weak alkali circulation line.

10. A dry gas compressor suction tank high liquid level processing system according to claim 9, characterized in that: The water washing circulation line is provided with a water washing centrifugal pump and a water replenishing line in sequence; the strong alkali circulation line is provided with a strong alkali centrifugal pump and an alkali replenishing line in sequence; and the weak alkali circulation line is provided with a weak alkali centrifugal pump.