Volute separation cylinder and separator

Abstract

The invention relates to a volute separation barrel and a separator. The volute separation barrel comprises a barrel body, a volute is arranged in the middle of the barrel; the upper end of the cylinder body is provided with conical guide vanes which are spirally stacked; at least one stage of liquid seal is arranged at the lower end of the barrel; the lower section of the cylinder body is provided with at least one stage of slope; and a turbine is mounted in the volute. The separator comprises a separator body, a gas outlet is formed in the top of the separator body, a gas-liquid mixed inlet is formed in the side wall of the separator body, and a liquid outlet is formed in the bottom of the separator body; the gas-liquid separator is characterized in that the separator further comprises a plurality of volute separation cylinders, and the volute separation cylinders are installed in the separator body and connected with the gas-liquid mixing inlet. The distributed volute separation barrel is adopted, the clearance height does not need to be increased, the device is suitable for a large-diameter separator, and the cost is low; and three-stage gas-liquid separation is adopted, so that higher efficiency is achieved.

Description

Technical Field

[0001] The invention relates to a gas-liquid separator, and in particular to a volute separation cylinder and a separator with low cost and high gas-liquid separation efficiency. Background Art

[0002] my country is a major methanol producer in the world, and its methanol production capacity continues to grow. Influenced by abundant coal resources and policy promotion, the production capacity by the end of 2022 has exceeded 100 million tons. The unprecedented development of methanol has also rapidly promoted the reform of methanol technology and equipment. As far as the methanol synthesis process is concerned, people used to focus on the reform of technology on synthesis towers, catalysts, compressors and other parts. These technologies have made great progress and greatly promoted the transformation of methanol technology. In recent years, people have also aimed at separators for reform. Separators are also important equipment in the methanol synthesis process. The structural innovation of separators is a low-input and high-output reform with good separation effect, high methanol output, low cycle power and few impurities; on the contrary, poor separation effect affects both output and quality and has high energy consumption.

[0003] As the device becomes larger, the separator diameter also increases. The separator with increasing diameter has the following problems: 1) The clearance height needs to be increased to ensure sufficient space, and increasing the clearance height requires increasing the height of the cylinder section. For large-diameter separators with high temperature and high pressure, the weight and cost of the separator will inevitably increase; 2) As the structure of the separator becomes more and more complex and the size becomes larger, the weight of the distributor itself is also increasing, and the force under the impact of gas is also increasing, which will cause the external load to increase; and the manufacturing and installation of the above large distributors require high precision. Once there is unequal annular gap, or the guide plates of each layer are not coaxial with the center of the equipment, the airflow will be deflected, which will not only fail to ensure the uniform distribution of the airflow, but also easily cause local damage problems, reduce the service life of the equipment, and affect the safe operation of the equipment.

[0004] 3) The current separators are all fixed baffles and / or guide plates, and the separation efficiency is low. Summary of the invention

[0005] In view of the above problems, the present invention proposes a volute separation barrel and a separator, which have low cost and high gas-liquid separation efficiency.

[0006] The technical solution of the present invention: A volute separation cylinder, the volute separation cylinder comprises a cylinder body; the middle part of the cylinder body is a volute. When in use, a gas-liquid mixture enters from the inlet of the volute, and under the action of centrifugal force, the gas and liquid are separated (primary separation), the gas spirally rises and exits from the upper end of the cylinder body, and the liquid descends along the inner wall of the cylinder and exits from the lower end of the cylinder body.

[0007] The above technical solution is further improved, and the upper end of the cylinder is provided with conical spiral stacked guide vanes. The conical spiral stacked guide vanes are used to separate the gas from the liquid (secondary separation) and separate the residual liquid in the gas.

[0008] The above technical solution is further improved in that at least one level of liquid seal is arranged at the lower end of the cylinder to prevent the gas entrained by the liquid from escaping from the lower end of the cylinder.

[0009] The above technical solution is further improved in that the lower section of the cylinder has at least one slope to collect the liquid and effectively prevent the liquid from generating vortex.

[0010] The above technical solution is further improved by installing a turbine in the volute to enhance the centrifugal force in the volute and make the gas-liquid separation (primary separation) more efficient.

[0011] A separator, comprising a body, a gas outlet is arranged on the top of the body, a gas-liquid mixed inlet is arranged on the side wall, and a liquid outlet is arranged on the bottom; the separator also comprises a plurality of volute separation barrels, each of which is installed in the body and connected to the gas-liquid mixed inlet. The gas-liquid mixed inlet is connected to an external gas-liquid mixture pipeline. When in use, the gas-liquid mixed liquid enters from the gas-liquid mixed inlet and is respectively sent to each volute separation barrel for gas-liquid separation (primary and secondary separation). The gas spirally rises and is discharged from the gas outlet, and the liquid descends and is discharged from the liquid outlet.

[0012] The above technical solution is further improved, the separator also includes a gas-liquid mixed inlet box, the gas-liquid mixed inlet box is installed in the body, each volute separation barrel is fixed on both sides of the gas-liquid mixed inlet box and arranged along the gas-liquid mixed inlet box, its inlet, i.e., the volute inlet, is directly opposite to and communicated with a plurality of outlets arranged on both sides of the gas-liquid mixed inlet box, and the gas-liquid mixed inlet is directly opposite to and communicated with an inlet arranged at one end of the gas-liquid mixed inlet box. The gas-liquid mixed liquid is evenly distributed to each volute separation barrel through the gas-liquid mixed inlet box.

[0013] The above technical solution is further improved, the gas-liquid mixed inlet box is tilted, its inlet side end is high and wide, and its non-inlet side end is low and narrow. The gas-liquid mixed liquid is more evenly distributed. A drain port is provided at the lower part of the non-inlet side end of the gas-liquid mixed inlet box, and the drain port is provided with at least one level of liquid seal to drain the liquid in the liquid mixed inlet box.

[0014] The above technical solution is further improved by providing a front guide arc plate at the volute inlet of each volute separation cylinder, so as to further make the gas-liquid mixture more evenly distributed.

[0015] The above technical solution is further improved, the gas outlet is a round tube passing through the top of the body, and a cylindrical wire mesh is arranged on the periphery of the inner part of the body. The gas is further separated into gas and liquid (three-stage separation) by the cylindrical wire mesh to separate the liquid remaining in the gas.

[0016] The advantages of the present invention are reasonable design, ingenious conception, and the use of distributed volute separation cylinders. The headroom height does not need to be increased, and it is suitable for large-diameter separators. The cost is low, and the rapid turning and mutual impact of the gas-liquid mixture during the separation process are reduced, and the gas-liquid separation is efficient; the three-stage gas-liquid separation is adopted, and the gas-liquid separation is more efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the separator structure.

[0018] Figure 2 yes Figure 1 Schematic diagram of the cross section along the AA direction.

[0019] Figure 3 It is a schematic diagram of the volute separation cylinder structure.

[0020] Figure 4 yes Figure 3 Schematic diagram of the cross section along the BB direction.

[0021] In the figure, there is a body 1, a gas-liquid mixing inlet box 2, a volute separation cylinder 3, a cylinder body 3-1, a volute 3-2, a conical spiral stacked guide vane 3-3, a primary liquid seal B 3-4, a two-stage slope 3-5, a turbine 3-6, a gas outlet 4, a gas-liquid mixing inlet 5, a liquid outlet 6, a cylindrical wire mesh 7, a front guide arc plate 8, a skirt seat 9, a drain port 10, a primary liquid seal A 11, and a manhole 12. DETAILED DESCRIPTION

[0022] like Figure 1-4As shown, a separator comprises a body 1, a gas-liquid mixed inlet box 2, and a plurality of volute separation barrels 3. A gas outlet 4 is arranged on the top of the body 1, a gas-liquid mixed inlet 5 is arranged on the side wall, and a liquid outlet 6 is arranged on the bottom. The gas-liquid mixed inlet box 2 is installed in the body 1, and each volute separation barrel 3 is fixed on both sides of the gas-liquid mixed inlet box 2 and arranged along the gas-liquid mixed inlet box 2. An inlet is arranged at one end of the gas-liquid mixed inlet box 2, and a plurality of outlets are arranged on both sides. The inlet is directly opposite to and connected to the gas-liquid mixed inlet 5, and each outlet The opening is directly opposite to and connected to the inlet of each volute separation cylinder 3; the gas outlet 4 is a round tube passing through the top of the body 1, and a cylindrical wire mesh 7 is arranged on the periphery of the inner part of the body 1; a front guide arc plate 8 is arranged at the inlet of each volute separation cylinder 3; the separator also includes a skirt 9 supporting the body and a manhole 12; the gas-liquid mixed inlet box 2 is inclined, and its inlet side end is high and wide, and the non-inlet side end is low and narrow; a drain port 10 is arranged at the lower part of the non-inlet side end of the gas-liquid mixed inlet box 2, and the drain port 10 is provided with a primary liquid seal A 11; The volute separation cylinder 3 comprises a cylinder body 3-1, a volute 3-2 in the middle of the cylinder body 3-1, a conical spirally stacked guide vane 3-3 is arranged at the upper end of the cylinder body 3-1, a primary liquid seal B 3-4 is arranged at the lower end of the cylinder body 3-1, and a two-stage slope 3-5 is provided at the lower section of the cylinder body 3-1. A turbine 3-6 is installed in the volute 3-2, and the inlet of the volute 3-2 is the inlet of the shell separation cylinder 3.

[0023] The above are only preferred specific implementation modes of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and inventive concepts of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A volute separation barrel, comprising a barrel body; characterized in that: The middle part of the cylinder is a volute.

2. A volute separator according to claim 1, characterized in that: The upper end of the cylinder is provided with conical spirally stacked guide vanes.

3. A volute separator according to claim 1, characterized in that: At least one level of liquid seal is arranged at the lower end of the cylinder.

4. A volute separator according to claim 1, characterized in that: The lower section of the cylinder has at least one slope.

5. The volute separator according to claim 1, characterized in that: A turbine is installed in the volute.

6. A separator, comprising a body, wherein the top of the body is provided with a gas outlet, the side wall is provided with a gas-liquid mixing inlet, and the bottom is provided with a liquid outlet; characterized in that: The separator further comprises a plurality of volute separation barrels as described in any one of claims 1 to 5, each volute separation barrel being installed in the device body and connected to a gas-liquid mixing inlet.

7. A separator according to claim 6, characterized in that: The separator also includes a gas-liquid mixing inlet box, which is installed in the device body. Each volute separation cylinder is fixed on both sides of the gas-liquid mixing inlet box and arranged along the gas-liquid mixing inlet box. Its inlet, i.e., the volute inlet, is directly opposite to and connected with a plurality of outlets arranged on both sides of the gas-liquid mixing inlet box. The gas-liquid mixing inlet is directly opposite to and connected with an inlet arranged at one end of the gas-liquid mixing inlet box.

8. A separator according to claim 7, characterized in that: The gas-liquid mixing inlet box is tilted, with its inlet side end being high and wide and its non-inlet side end being low and narrow; a liquid discharge port is provided at the lower part of the non-inlet side end of the gas-liquid mixing inlet box, and the liquid discharge port is provided with at least one level of liquid seal.

9. A separator according to claim 7, characterized in that: A front guide arc plate is provided at the volute inlet of each volute separation cylinder.

10. A separator according to claim 7, characterized in that: A cylindrical wire mesh is arranged at the periphery of the gas outlet.

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