Pulse extraction column and pulse generation device

Abstract

The utility model relates to the technical field of chemical engineering separation equipment, and discloses a pulse extraction column and a pulse generator, the pulse extraction column comprises an upper clarifying chamber, a lower clarifying chamber and a plate section, the upper clarifying chamber is communicated with the lower clarifying chamber through the plate section, an L-shaped organic phase inlet pipe is installed on one side of the lower clarifying chamber in a penetrating mode, and the lower clarifying chamber is communicated with the plate section through the organic phase inlet pipe. A pulse pipe is mounted at an inlet of the transverse end of the organic phase inlet pipe. According to the pulse extraction column and the pulse generation device, the upper clarifying chamber and the lower clarifying chamber are made of glass transparent materials, the conditions in the upper clarifying chamber and the lower clarifying chamber can be directly observed conveniently, a row of complementary PWM waves are used for driving an MOS switch, periodic opening and closing of a pulse valve are achieved, a pulse system can be guaranteed to be in a closed state by cutting off a power supply when equipment breaks down, and the operation is convenient. The magnetic pulse valve prevents the rotary valve from being in an open state during failure, and prevents liquid in a pipe from being blown into a pulse column by high-pressure air to affect equipment safety.

Description

Technical Field

[0001] The utility model relates to the technical field of chemical separation equipment, in particular to a pulsed extraction column and a pulse generating device. Background Art

[0002] The pulsed extraction column consists of upper and lower clarification sections and a column body with a very large height-diameter ratio. A number of thin plates made of different materials and of different types are horizontally installed in the column body, which are usually also called plate sections. The two phases flow countercurrently, mix and mass-transfer in the plate sections of the pulsed extraction column, and then clarify and separate phases in the upper and lower clarification sections. The pulsed extraction column stirs the extraction column by means of air pulses, which can break up the liquid droplets in the column, increase the contact area between the two phases, increase the degree of turbulence and improve the mass-transfer efficiency.

[0003] In the plate section of the baffle pulsed extraction column, discs and rings are installed at certain intervals. Under the action of pulses, stable vortices are generated between the discs and rings, causing the dispersed-phase liquid droplets to rotate continuously while moving, and thus being continuously broken and coalesced.

[0004] Most of the existing pulsed extraction columns are made of opaque materials, and the flow state inside the column is difficult to observe; the pulse generating device is of a rotary valve type, which alternately connects compressed air with the pulse tube and the pulse tube with the exhaust port as the valve body rotates. When the equipment fails and loses power, the rotary valve is liable to be in the open position, resulting in excessive compressed air entering the pulse tube and blowing the liquid in the pulse tube into the column, threatening the safety of the equipment.

[0005] Therefore, we propose a pulsed extraction column and a pulse generating device. Summary of the Utility Model

[0006] In view of the problems that most of the existing pulsed extraction columns are made of opaque materials and the flow state inside the column is difficult to observe; the pulse generating device is of a rotary valve type, which alternately connects compressed air with the pulse tube and the pulse tube with the exhaust port as the valve body rotates. When the equipment fails and loses power, the rotary valve is liable to be in the open position, resulting in excessive compressed air entering the pulse tube and blowing the liquid in the pulse tube into the column, threatening the safety of the equipment, the present utility model is proposed.

[0007] Therefore, the purpose of the present utility model is to provide a pulsed extraction column and a pulse generating device, and the purpose thereof is: to avoid the failure of the rotary valve, and at the same time for the convenience of observation, a pulsed extraction column made of a transparent material and a more reliable pulse generating device are needed.

[0008] To solve the above technical problems, the present utility model provides the following technical solution: a pulsed extraction column, comprising an upper clarification chamber, a lower clarification chamber and a plate section, the upper clarification chamber and the lower clarification chamber are connected and communicated through the plate section, an L-shaped organic phase inlet pipe is inserted and installed on one side of the lower clarification chamber, and a pulse tube is installed at the inlet of the horizontal end of the organic phase inlet pipe;

[0009] A baffle is installed inside the plate section. The baffle includes three first sleeves. A group of baffle plates are fixed between the three first sleeves. A baffle ring is fixedly installed between the three first sleeves and between two adjacent baffle plates, and the baffle ring is located between the middles of two adjacent baffle plates. A second sleeve is fixed between the centers of the group of baffle plates.

[0010] As an improved technical solution, screw rods are fixed at both ends of the first sleeve and the second sleeve, and nuts are threadedly installed on the screw rods.

[0011] As an improved technical solution, the outlet end of the vertical section of the organic phase inlet pipe is located inside the lower clarification chamber and below the plate section, and the vertical section of the organic phase inlet pipe and the baffle plate are coaxially arranged.

[0012] As an improved technical solution, a water phase inlet pipe is inserted and installed at the center of the top of the upper clarification chamber. An organic phase outlet pipe is installed at the outlet on one side of the upper clarification chamber. A blowing instrument pressure guiding pipe and an exhaust pipe are respectively fixed on both sides of the top of the upper clarification chamber.

[0013] As an improved technical solution, a water phase outlet pipe is installed at the outlet on one side of the lower clarification chamber, and a drain pipe is installed at the outlet on one side of the bottom of the lower clarification chamber.

[0014] A pulse generating device includes a standby gas path, a main gas path and a pulse connection pipe. The standby gas path and the main gas path are connected to the pulse connection pipe through a tee.

[0015] As an improved technical solution, the main gas path is composed of a pressure regulating valve, a buffer tank, a normally closed valve one, an electromagnetic pulse valve one, an electromagnetic pulse valve two and a normally closed valve two. The regulating valve is installed at the inlet of the buffer tank. The normally closed valve one is installed at the outlet of the buffer tank. The electromagnetic pulse valve one is installed at the outlet of the normally closed valve one. The electromagnetic pulse valve two is installed at the outlet of the electromagnetic pulse valve one. The normally closed valve two is installed at the outlet of the electromagnetic pulse valve two.

[0016] As an improved technical solution, the standby gas path is composed of a normally closed valve three, a standby electromagnetic pulse valve one, a standby electromagnetic pulse two and a normally closed valve four. The inlet of the normally closed valve three is installed at the outlet end of the buffer tank. The standby electromagnetic pulse valve one is installed at the outlet end of the normally closed valve three. The standby electromagnetic pulse valve two is installed at the outlet end of the standby electromagnetic pulse valve one. The normally closed valve four is installed at the outlet end of the standby electromagnetic pulse valve two, and the outlet end of the standby valve four is communicated with the exhaust tail end of the main gas path through a pipeline.

[0017] The beneficial effects of the present utility model:

[0018] 1. For this utility model, turn on the pressure regulating valve to slowly increase the pressure in the tank until the pulse amplitude reaches the requirement. When the equipment is turned off, just cut off the power supply and close the pressure regulating valve to disconnect the pulse tube from the high-pressure gas source, effectively protecting the equipment. If the main road valve fails, disconnect the main road power supply and start the standby power supply, and open the normally closed valves III and IV of the bypass to complete the switching.

[0019] 2. For this utility model, with multiple alternately installed baffle rings and baffle plates, the gas is frequently blocked and guided, prolonging the residence time of the gas flow in the plate section. At the same time, the installation method of the baffle parts with the cooperation of the lead screw and the nut is more convenient and also reduces the weight of the device.

[0020] 3. For this utility model, the upper clarification chamber and the lower clarification chamber are made of glass transparent material, which is convenient to directly observe the internal conditions of the upper clarification chamber and the lower clarification chamber. Use a column of complementary PWM waves to drive the MOS switch to realize the periodic opening and closing of the pulse valve. When the equipment fails, cut off the power supply to ensure that the pulse system is in the closed state. The magnetic pulse valve avoids being in the open state when the rotary valve fails, preventing the liquid in the pipe from being blown into the pulse column by the high-pressure gas and affecting the safety of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of this utility model, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of this utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings. Among them:

[0022] Figure 1 It is a schematic diagram of the overall structure of a pulse extraction column and a pulse generating device of this utility model.

[0023] Figure 2 It is a schematic diagram of the structure of the baffle part of a pulse extraction column and a pulse generating device of this utility model.

[0024] Figure 3 It is a schematic diagram of the structure of the pulse generating device of a pulse extraction column and a pulse generating device of this utility model.

[0025] Figure 4 It is a schematic diagram of the flow of the plate section of a pulse extraction column and a pulse generating device of this utility model.

[0026] DESCRIPTION OF THE REFERENCE NUMERALS:

[0027] 1. Organic phase inlet pipe; 2. Pulse pipe; 3. Upper clarification chamber; 4. Blowing instrument pressure guiding pipe; 5. Aqueous phase inlet pipe; 6. Exhaust pipe; 7. Organic phase outlet pipe; 8. Lead screw; 9. Nut; 10. Baffle ring; 11. Baffle plate; 12. Sleeve one; 13. Lower clarification chamber; 14. Aqueous phase outlet pipe; 15. Drain pipe; 16. Standby gas path; 17. Main gas path; 18. Pulse connection pipe. Detailed implementation mode

[0028] To make the above objects, features and advantages of the present utility model more obvious and understandable, the following will make a detailed description of the specific implementation mode of the present utility model in conjunction with the drawings of the specification.

[0029] Refer to Figures 1-4 , which is the first embodiment of the present utility model, provides a pulsed extraction column and a pulse generating device. Such a pulsed extraction column includes an upper clarification chamber 3, a lower clarification chamber 13 and a plate section. The upper clarification chamber 3 and the lower clarification chamber 13 are connected through the plate section. An L-shaped organic phase inlet pipe 1 is inserted and installed on one side of the lower clarification chamber 13. A pulse pipe 2 is installed at the inlet of the horizontal end of the organic phase inlet pipe 1, and the upper end is connected to the pulse generating device. The upper clarification chamber 3 and the lower clarification chamber 13 are glass jars, and the upper clarification chamber 3 and the lower clarification chamber 13 are made of glass transparent material, which is convenient to directly observe the internal conditions of the upper clarification chamber 3 and the lower clarification chamber 13;

[0030] A baffle member is installed inside the plate section. The baffle member includes three sleeves one 12. A group of baffle plates 11 are fixed between the three sleeves one 12. A baffle ring 10 is fixedly installed between the three sleeves one 12 and between two adjacent baffle plates 11, and the baffle ring 10 is located between the middle parts of two adjacent baffle plates 11. A sleeve two is fixed between the centers of a group of baffle plates 11.

[0031] The principle of the baffle member is as follows:

[0032] When the air flow moves upward from bottom to top, the air flow first impacts the bottom of the lowermost baffle plate 11. Due to the blocking effect of the baffle plate 11, the air flow flows to the periphery and finally passes through the baffle plate 11 and flows upward. Since a baffle ring 10 is installed between two adjacent baffle plates 11, the air flow flowing upward from the periphery will directly impact the bottom of the baffle ring 10. Due to the blocking and guiding of the baffle ring 10, the air flow flows to the central part and finally passes through the inner hole of the baffle ring 10 and flows upward. With multiple alternately installed baffle rings 10 and baffle plates 11, the air flow is frequently blocked and guided, extending the residence time of the air flow in the plate section.

[0033] Both ends of the sleeve one 12 and the sleeve two are fixed with lead screws 8, and nuts 9 are threadedly installed on the lead screws 8. The cooperation of the lead screws 8 and the nuts 9 makes the installation method of the baffle member more convenient and also reduces the weight of the device.

[0034] The outlet end of the vertical section of the organic phase inlet pipe 1 is located inside the lower clarification chamber 13 and below the plate section. The vertical section of the organic phase inlet pipe 1 is coaxially arranged with the baffle plate 11.

[0035] At the center of the top of the upper clarification chamber 3, the aqueous phase inlet pipe 5 is inserted and installed. At the outlet on one side of the upper clarification chamber 3, the organic phase outlet pipe 7 is installed. On both sides of the top of the upper clarification chamber 3, the blowing instrument pressure guiding pipe 4 and the exhaust pipe 6 are respectively fixed. The blowing instrument pressure guiding pipe 4 is externally connected to the blowing test system.

[0036] At the outlet on one side of the lower clarification chamber 13, the aqueous phase outlet pipe 14 is installed. At the outlet on one side of the bottom of the lower clarification chamber 13, the drain pipe 15 is installed.

[0037] A pulse generating device includes a standby gas path 16, a main gas path 17 and a pulse connection pipe 18. The standby gas path 16 and the main gas path 17 are connected to the pulse connection pipe 18 through a tee.

[0038] Drive the MOS switch with a column of complementary PWM waves to realize the periodic opening and closing of the pulse valve. When a device failure occurs, cutting off the power supply can ensure that the pulse system is in the closed state. The magnetic pulse valve avoids being in the open state when the rotary valve fails, and avoids the liquid in the pipe being blown into the pulse column by high-pressure gas, which affects the safety of the equipment. If a main path valve fails, disconnect the main path power supply and start the standby power supply, and open the bypass normally closed valves three and four normally closed valves to complete the switching.

[0039] The main gas path 17 consists of a pressure regulating valve, a buffer tank, a normally closed valve one, an electromagnetic pulse valve one, an electromagnetic pulse valve two and a normally closed valve two. The pressure regulating valve is installed at the inlet of the buffer tank. The normally closed valve one is installed at the outlet of the buffer tank. The electromagnetic pulse valve one is installed at the outlet of the normally closed valve one. The electromagnetic pulse valve two is installed at the outlet of the electromagnetic pulse valve one. The normally closed valve two is installed at the outlet of the electromagnetic pulse valve two.

[0040] Open the pressure regulating valve to make the pressure in the tank rise slowly until the pulse amplitude reaches the requirement. When the equipment is closed, just cut off the power supply and close the pressure regulating valve to disconnect the pulse pipe from the high-pressure gas source, effectively protecting the equipment.

[0041] The standby gas path 16 consists of a normally closed valve three, a standby electromagnetic pulse valve one, a standby electromagnetic pulse two and a normally closed valve four. The inlet of the normally closed valve three is installed at the outlet end of the buffer tank. The standby electromagnetic pulse valve one is installed at the outlet end of the normally closed valve three. The standby electromagnetic pulse valve two is installed at the outlet end of the standby electromagnetic pulse valve one. The normally closed valve four is installed at the outlet end of the standby electromagnetic pulse valve two. And the outlet end of the standby valve four is connected to the exhaust tail end of the main gas path 17 through a pipeline.

[0042] During the use process, the working process of the extraction column is as follows:

[0043] The water tank enters the interior of the upper clarification chamber 3 through the aqueous phase inlet pipe 5 until the aqueous phase liquid level is higher than the height where the organic phase outlet pipe 7 is located. The organic phase enters the interior of the lower clarification chamber 13 through the organic phase inlet pipe 1 until the organic phase liquid level is higher than the position where the aqueous phase outlet pipe 14 is located. Then, start the external blowing device to enter the interior of the upper clarification chamber 3 through the blowing instrument pressure guiding pipe 4, establish the material balance at the inlet and outlet, maintain the two-phase interface above the organic phase outlet pipe 7, and then the pulse generating device can be started.

[0044] The working process of the pulse generating device is as follows:

[0045] Power supply is provided for the main gas path 17, the PWM wave generator operates, the first electromagnetic pulse valve and the second electromagnetic pulse valve are in a periodic opening and closing state. At this time, open the normally closed first valve and the normally closed second valve to connect the gas path, the pulse connection pipe 18 is connected to the pulse pipe 2, the high level of the PWM main wave, the first electromagnetic pulse valve opens, the high-pressure gas in the buffer tank fills the pulse pipe, causing the liquid level in the pipe to drop. At this time, the complementary wave is at a low level, and the second electromagnetic pulse valve closes;

[0046] The low level of the PWM main wave, the first electromagnetic pulse valve closes. At this time, the complementary wave is at a high level, the second electromagnetic pulse valve opens, the gas in the pipe exhausts to the exhaust pipe, and the liquid level rises, thus completing one pulse action.

[0047] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered by the scope of the claims of the present invention.

Claims

1. A pulse extraction column, comprising an upper clarifying chamber (3), a lower clarifying chamber (13) and a plate section, characterized in that: The upper clarifying chamber (3) and the lower clarifying chamber (13) are connected via a plate section, an L-shaped organic phase inlet pipe (1) is inserted into one side of the lower clarifying chamber (13), and a pulse tube (2) is installed at the inlet of the lateral end of the organic phase inlet pipe (1); A deflector is installed inside the plate segment, the deflector comprising three sleeves one (12), a group of deflector plates (11) being fixed between the three sleeves one (12), a deflector ring (10) being fixed between the three sleeves one (12) and between two connected deflector plates (11), and the deflector ring (10) being located between the middle parts of the two connected deflector plates (11), and a sleeve two being fixed between the centers of a group of the deflector plates (11).

2. A pulse extraction column according to claim 1, characterized in that: Screw rods (8) are fixed at both ends of the first sleeve (12) and the second sleeve, and nuts (9) are threadedly mounted on the screw rods (8).

3. A pulse extraction column according to claim 2, characterized in that: The outlet end of the vertical end of the organic phase inlet pipe (1) is located inside the lower clarification chamber (13) and below the plate section. The vertical end of the organic phase inlet pipe (1) and the baffle (11) are coaxially arranged.

4. A pulse extraction column according to claim 3, characterized in that: A water phase inlet pipe (5) is installed through the center of the top of the upper clarification chamber (3), an organic phase outlet pipe (7) is installed at the outlet of one side of the upper clarification chamber (3), and a gas blowing instrument pressure pipe (4) and an exhaust pipe (6) are respectively fixed to both sides of the top of the upper clarification chamber (3).

5. A pulse extraction column according to claim 4, characterized in that: A water phase outlet pipe (14) is installed at an outlet on one side of the lower clarifying chamber (13), and an emptying pipe (15) is installed at an outlet on one side of the bottom of the lower clarifying chamber (13).

6. A pulse generating device, characterized in that: It comprises a spare gas circuit (16), a main gas circuit (17) and a pulse connecting pipe (18), wherein the spare gas circuit (16) and the main gas circuit (17) are connected to the pulse connecting pipe (18) via a three-way pipe.

7. A pulse generating device according to claim 6, characterized in that: The main gas circuit (17) comprises a pressure regulating valve, a buffer tank, a normally closed valve 1, an electromagnetic pulse valve 1, an electromagnetic pulse valve 2 and a normally closed valve 2. The pressure regulating valve is installed at the inlet of the buffer tank, the normally closed valve 1 is installed at the outlet of the buffer tank, the electromagnetic pulse valve 1 is installed at the outlet of the normally closed valve 1, the electromagnetic pulse valve 2 is installed at the outlet of the electromagnetic pulse valve 1, and the normally closed valve 2 is installed at the outlet of the electromagnetic pulse valve 2.

8. A pulse generating device according to claim 7, characterized in that: The backup gas circuit (16) comprises a normally closed valve three, a backup electromagnetic pulse valve one, a backup electromagnetic pulse valve two and a normally closed valve four, wherein the inlet of the normally closed valve three is installed at the outlet end of the buffer tank, the backup electromagnetic pulse valve one is installed at the outlet end of the normally closed valve three, the backup electromagnetic pulse valve two is installed at the outlet end of the backup electromagnetic pulse valve one, the normally closed valve four is installed at the outlet end of the backup electromagnetic pulse valve two, and the outlet end of the backup valve four is connected to the exhaust tail end of the main gas circuit (17) through a pipeline.

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