Simple ionic liquid desulfurization desorption vapor-liquid separation device

Abstract

The utility model discloses a simple ionic liquid desulfurization desorption gas-liquid separation device which is provided with a gas-liquid separation tank, the top of the gas-liquid separation tank is provided with a liquid inlet, a liquid inlet pipe is inserted in the liquid inlet, the upper part of the liquid inlet pipe is provided with a control valve, the upper end opening of the liquid inlet pipe is connected to the lowest point position of an acid making pipeline, and the lower end opening of the liquid inlet pipe is connected to the lower end position of the acid making pipeline. A lower port of the liquid inlet pipe extends to the position, close to the bottom, in the gas-liquid separation tank, an overflow port is further formed in the upper portion of the side wall of the gas-liquid separation tank, and an overflow pipe is arranged on the overflow port; the top of the gas-liquid separation tank is also provided with an exhaust port, and the exhaust port is connected to an acid making pipeline when the gas-liquid separation tank is used; the device is simple in structure and convenient to operate, well solves the problems of gas-liquid mixing and unable automatic gas-liquid separation of the ionic liquid desulfurization desorption steam, ensures the normal delivery of the ionic liquid desulfurization desorption steam, provides support for the normal operation of an ionic liquid desorption system, and ensures the quality of the ionic liquid.

Description

Technical Field

[0001] The utility model relates to the technical field of ionic liquid desulfurization production equipment, in particular to a simple ionic liquid desulfurization analysis steam-gas-liquid separation device. Background Art

[0002] In the ionic liquid desulfurization process, the rich amine liquid stored in the lower part of the desulfurization tower is pressurized and transported to the lean-rich amine heat exchanger by the rich amine delivery pump. The lean amine liquid flowing out of the desorption tower is heated to about 90°C through heat exchange, and then enters the rich amine reheater to be heated to about 100°C through secondary heat exchange with desorption steam. The heated rich amine liquid enters the middle section of the desorption tower, is evenly distributed in the tower through the liquid distributor, and flows from top to bottom into the middle packing layer. In the packing layer, it is reversely contacted with the steam generated in the lower section of the desorption tower, and is heated to about 105-110°C, thereby desorbing and releasing SO2. In the lower section of the desorption tower, the lean amine liquid and the desorption steam are separated by gas and liquid. The desorption steam enters the middle section of the desorption tower through the gas cap device of the isolation tower plate, and the rich amine liquid is heated in the middle packing layer, and then mixed with the SO2 desorbed from the rich amine liquid and enters the upper packing layer of the desorption tower. In the upper packing layer, it is slightly cooled by the desorption reflux liquid, and then flows out from the top of the desorption tower. The desorption steam flowing out of the top of the desorption tower is transported by the internal pressure of the desorption tower, enters the rich amine reheater, and exchanges heat with the rich amine liquid to cool down to about 100°C; the desorption steam at the outlet of the rich amine reheater enters the desorption steam condenser again and exchanges heat with the cooling circulating water to cool to below 50°C, and then enters the desorption reflux tank. The condensed liquid and SO2 gas are separated by gas and liquid in the desorption reflux tank, and the high-concentration SO2 gas is sent to the sulfuric acid workshop for purification process reuse. High-concentration SO2 gas is directly transported to the purification process of the sulfuric acid workshop through a composite PE pipe to produce 98% concentrated sulfuric acid. The high-concentration SO2 pipeline is laid overhead along the pipe rack, and an acid gas cut-off valve is installed before entering the acid-making device. The condensate in the pipeline will gather at the lowest point of the pipeline to form a "liquid seal" blockage, causing the analyzed SO2 to not be extracted in time, affecting the analysis effect of the ion liquid. At the same time, a large amount of water vapor gathers, causing the water content of the sulfuric acid purification inlet gas to be too high, affecting the operation of the acid-making process.

[0003] Since the current gas-liquid separation effect through analytical analysis is poor and automatic liquid drainage cannot be achieved, it is very meaningful to make a simple, efficient and highly operable ionic liquid desulfurization analytical gas-liquid separation device for the normal operation of ionic liquid desulfurization. Utility Model Content

[0004] The purpose of the utility model is to provide a simple ionic liquid desulfurization analysis gas-liquid separation device for the above situation. The device is simple and easy to operate and has strong practicality.

[0005] The specific scheme of the utility model is: a simple ionic liquid desulfurization analysis gas-liquid separation device, comprising a gas-liquid separation tank, a liquid inlet is provided on the top of the gas-liquid separation tank, a liquid inlet pipe is inserted on the liquid inlet, a control valve is provided on the upper part of the liquid inlet pipe, the upper end of the liquid inlet pipe is connected to the lowest point of the acid-making pipeline, the lower end of the liquid inlet pipe extends to the gas-liquid separation tank near the bottom, an overflow port is also provided on the upper part of the side wall of the gas-liquid separation tank, an overflow pipe is provided on the overflow port; an exhaust port is also provided on the top of the gas-liquid separation tank, and the exhaust port is connected to the acid-making pipeline when in use.

[0006] Furthermore, the gas-liquid separation tank in the utility model is a cylindrical glass fiber reinforced plastic tank with a diameter of 0.5 meters and a height of 1.25 meters, and the lower end of the liquid inlet pipe is 10 cm away from the bottom of the gas-liquid separation tank.

[0007] Furthermore, the overflow port in the utility model is 15 cm away from the top of the gas-liquid separation tank.

[0008] Furthermore, the exhaust port in the utility model is in the shape of a trumpet mouth that is small at the top and large at the bottom, and the exhaust port is connected to a high position on the acid-making pipeline through a connecting pipe.

[0009] Furthermore, the control valve in the utility model is a manual valve or a solenoid valve.

[0010] The utility model has a simple structure and is easy to operate. It effectively solves the problem of gas-liquid mixing and gas-liquid failure in automatic separation of ionic liquid desulfurization analysis steam, ensures the normal transportation of ionic liquid desulfurization analysis steam, provides support for the normal operation of the ionic liquid analysis system, and ensures the quality of the ionic liquid. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic diagram of the main viewing direction structure of the utility model;

[0012] Figure 2 It is a schematic diagram of the structure of the utility model in a top view;

[0013] Figure 3 It is a schematic diagram of the structure in the main section direction of the utility model;

[0014] Figure 4 It is a schematic diagram of the connection structure of the utility model when it is used.

[0015] In the figure: 1—control valve, 2—exhaust port, 3—overflow port, 4—overflow pipe, 5—gas-liquid separation tank, 6—liquid inlet pipe, 7—acid production pipeline, 8—connecting pipe. DETAILED DESCRIPTION

[0016] The following will be combined with the accompanying drawings of the utility model to clearly and completely describe the technical solution of the utility model. It is obvious that the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the protection scope of the utility model. In the description of the utility model, it should be noted that the terms "upper", "lower", "inside", "outside" and the like indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when used, which is only for the convenience of describing the utility model or simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed or operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model.

[0017] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0018] See also Figure 1 to Figure 4 The utility model is a simple ionic liquid desulfurization analysis gas-liquid separation device, which has a gas-liquid separation tank 5, a liquid inlet is provided on the top of the gas-liquid separation tank, a liquid inlet pipe 6 is inserted on the liquid inlet, and a control valve 1 is provided on the upper part of the liquid inlet pipe. Furthermore, the control valve in the utility model is a manual valve or a solenoid valve, the upper end of the liquid inlet pipe is connected to the lowest point of the acid production pipeline, and the lower end of the liquid inlet pipe extends to the gas-liquid separation tank near the bottom. The upper part of the side wall of the gas-liquid separation tank is also provided with an overflow port 3, and an overflow pipe 4 is provided on the overflow port; the gas An exhaust port 2 is also provided on the top of the liquid separation tank, which is connected to the acid-making pipeline when in use. Furthermore, the exhaust port described in the utility model is a trumpet-shaped port that is small at the top and large at the bottom, and the exhaust port is connected to a high position on the acid-making pipeline 7 through a connecting pipe 8; further, the gas-liquid separation tank described in the utility model is a cylindrical fiberglass tank with a diameter of 0.5 meters and a height of 1.25 meters, and the lower end of the liquid inlet pipe is 10 cm away from the bottom of the gas-liquid separation tank; further, the overflow port described in the utility model is 15 cm away from the top of the gas-liquid separation tank.

[0019] The overflow port in the utility model is about 1 meter away from the lowest point of the liquid inlet pipe, which serves as a distance height of the overflow.

[0020] When the utility model device is in use, it is first connected as a whole to the lowest point on the acid-making pipeline, and at the same time, the exhaust port is connected to a relatively high point on the acid-making pipeline by a connecting pipe. During specific operation, the control valve on the liquid inlet pipe on the gas-liquid separation tank is opened by 2 / 3, and the condensate of the analytical vapor enters the gas-liquid separation tank. When the condensate in the gas-liquid separation tank flows out from the overflow port, the control valve of the liquid inlet pipe is closed to 1 / 3, and the valve opening is appropriately modified according to the actual amount of the overflowing condensate.

[0021] The condensate enters the gas-liquid separation tank from the liquid inlet pipe. The condensate is mixed with SO2 gas and is stored in the gas-liquid separation tank. The SO2 gas therein returns to the acid production pipeline through the exhaust port and continues to be pumped forward.

[0022] The utility model has a simple structure and is easy to operate. It effectively solves the problem of gas-liquid mixing and gas-liquid failure in automatic separation of ionic liquid desulfurization analysis steam, ensures the normal transportation of ionic liquid desulfurization analysis steam, provides support for the normal operation of the ionic liquid analysis system, and ensures the quality of the ionic liquid.

Claims

1. A simple ionic liquid desulfurization analysis steam-liquid separation device, characterized in that: The invention has a gas-liquid separation tank, the top of which is provided with a liquid inlet, a liquid inlet pipe is inserted on the liquid inlet, a control valve is arranged on the upper part of the liquid inlet pipe, the upper end of the liquid inlet pipe is connected to the lowest point of the acid-making pipeline, the lower end of the liquid inlet pipe extends to the bottom of the gas-liquid separation tank, an overflow port is also arranged on the upper part of the side wall of the gas-liquid separation tank, and an overflow pipe is arranged on the overflow port; the top of the gas-liquid separation tank is also provided with an exhaust port, which is connected to the acid-making pipeline when in use.

2. A simple ionic liquid desulfurization analysis steam-liquid separation device according to claim 1, characterized in that: The gas-liquid separation tank is a cylindrical glass fiber reinforced plastic tank with a diameter of 0.5 meters and a height of 1.25 meters. The lower end of the liquid inlet pipe is 10 cm away from the bottom of the gas-liquid separation tank.

3. A simple ionic liquid desulfurization analysis steam-liquid separation device according to claim 1, characterized in that: The overflow port is 15 cm away from the top of the gas-liquid separation tank.

4. A simple ionic liquid desulfurization analysis steam-liquid separation device according to claim 1, characterized in that: The exhaust port is in the shape of a trumpet with a small top and a large bottom, and the exhaust port is connected to a high position on the acid-making pipeline through a connecting pipe.

5. The simple ionic liquid desulfurization analysis steam-liquid separation device according to claim 1 is characterized by: The control valve is a manual valve or a solenoid valve.

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