Efficient multi-stage gas-liquid mixing reaction device

Abstract

The utility model discloses an efficient multistage gas-liquid mixing reaction device which comprises a standby liquid storage tank, the standby liquid storage tank is connected to a first input port of a prepared liquid storage tank through a standby liquid storage tank delivery pump, and a second input port of the prepared liquid storage tank is connected with a reagent storage tank through a reagent storage tank delivery pump; the prepared liquid storage tank is connected to an input port of the venturi jet mixer through the magnetic centrifugal pump, and the other input port of the venturi jet mixer is connected to an output port of the gas cylinder through the gas quantitative flowmeter; an output port of the venturi jet mixer is connected to an input port at the bottom of the first-stage gas-liquid mixer, the first-stage gas-liquid mixer is connected with the second-stage gas-liquid mixer and the third-stage gas-liquid mixer in series, and gas overflows to an input port of the first-stage reaction storage tank after being subjected to multi-stage gas-liquid mixing. The multi-stage gas-liquid mixer is mainly used for gas-liquid mixing reaction such as impurity removal of impurity-containing electrolyte and purification of wastewater containing heavy metal ions, and the multi-stage gas-liquid mixer is additionally arranged between the Venturi jet device and the first-stage reaction storage tank, so that the gas-liquid mixing time is prolonged, and the gas-liquid reaction efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of hydrometallurgical gas-liquid reaction, in particular to a high-efficiency multi-stage gas-liquid mixing reaction device. Background Art

[0002] Gas-liquid reaction is one of the common two-phase reactions in the field of hydrometallurgy. At present, how to achieve efficient gas-liquid mixing and improve the efficiency of gas-liquid mixing reaction has certain technical difficulties. Especially when it comes to gas-liquid reaction test devices for toxic and harmful gases, it is necessary to comprehensively consider issues such as quantitative control of gas-liquid flow, gas-liquid mixing efficiency, and tail gas absorption devices. This utility model patent comprehensively considers the above issues, uses a multi-stage gas-liquid mixer as the main test equipment, and builds a set of high-efficiency multi-stage gas-liquid mixing reaction devices. The gas-liquid reaction test device has good airtightness, can realize efficient and continuous gas-liquid mixing reaction, and has the characteristics of simple operation, high safety, and strong stability. Utility Model Content

[0003] The purpose of the utility model is to provide a high-efficiency multi-stage gas-liquid mixing reaction device to solve the problems raised in the above background technology.

[0004] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0005] A high-efficiency multi-stage gas-liquid mixing reaction device comprises a reserve liquid storage tank, a liquid distribution storage tank, a primary gas-liquid mixer, a secondary gas-liquid mixer, a tertiary gas-liquid mixer, a primary reaction storage tank, a secondary reaction storage tank, a tertiary reaction storage tank, a quaternary reaction storage tank and a filtered liquid storage tank. The reserve liquid storage tank is connected to the first input port of the preparation liquid storage tank through the reserve liquid storage tank delivery pump, and the second input port of the preparation liquid storage tank is connected to the reagent storage tank through the reagent storage tank delivery pump; the preparation liquid storage tank is connected to the input port of the venturi jet mixer through a magnetic centrifugal pump, and the other input port of the venturi jet mixer is connected to the output port of the gas cylinder through a gas quantitative flowmeter; the output port of the venturi jet mixer is connected to the input port at the bottom of the first-level gas-liquid mixer, and the first-level gas-liquid mixer is connected to the second-level gas-liquid mixer and the third-level gas-liquid mixer in series, and overflows to the input port of the first-level reaction storage tank after multi-stage gas-liquid mixing; the bottom output port of the first-level reaction storage tank is connected to the input port of the second-level reaction storage tank through a peristaltic pump, the bottom output port of the second-level reaction storage tank is connected to the input port of the third-level reaction storage tank through a peristaltic pump, and the bottom output port of the third-level reaction storage tank is connected to the fourth-level reaction storage tank through a peristaltic pump; the bottom output port of the fourth-level reaction storage tank is connected to the input port of the filter through a pipeline, and the output port of the filter is connected to the filtered liquid storage tank.

[0006] Preferably, a circulation pipeline is arranged between the liquid preparation storage tank and the magnetic centrifugal pump.

[0007] Preferably, a liquid flow control valve and a float flowmeter are provided on the pipeline between the liquid preparation tank and the venturi jet mixer. The gas and liquid flows in the reaction system are quantitatively controlled by the gas quantitative flowmeter, the liquid flow control valve and the float flowmeter, respectively.

[0008] Preferably, polytetrafluoroethylene stirring paddles are built into the first-stage gas-liquid mixer, the second-stage gas-liquid mixer, and the third-stage gas-liquid mixer, and a multi-stage series connection is used to extend the gas-liquid mixing time.

[0009] Preferably, a pH meter and a redox potentiometer with temperature compensation function are installed in the liquid preparation tank, the primary reaction tank, the secondary reaction tank, the tertiary reaction tank, and the quaternary reaction tank. The pH meter and the redox potentiometer with temperature compensation function are connected to the PLC controller to realize online monitoring of data.

[0010] Preferably, the liquid storage tank delivery pump, reagent storage tank delivery pump, magnetic centrifugal pump, gas quantitative flow meter, liquid flow control valve, float flow meter, primary reaction tank peristaltic pump, secondary reaction tank peristaltic pump, and tertiary reaction tank peristaltic pump are connected to the PLC controller to achieve remote automatic control of various pump bodies.

[0011] Preferably, the liquid preparation tank, the primary reaction tank, the secondary reaction tank, the tertiary reaction tank, and the quaternary reaction tank are provided with a heating device, which can realize temperature control of the liquid preparation tank, the primary reaction tank, the secondary reaction tank, the tertiary reaction tank, and the quaternary reaction tank.

[0012] Preferably, the tail gas in the primary reaction tank, the secondary reaction tank, the tertiary reaction tank, and the quaternary reaction tank is connected to the input port of the waste gas absorption device through a gas pipeline, and is discharged after absorption.

[0013] The beneficial effects of the utility model are:

[0014] (1) The utility model adds a multi-stage gas-liquid mixer between the venturi ejector and the primary reaction tank to extend the gas-liquid mixing time and improve the gas-liquid reaction efficiency.

[0015] (2) The utility model can realize accurate control of gas and liquid flow rate through the gas quantitative flow meter and the liquid flow control valve, which is convenient for calculating the material consumption.

[0016] (3) The utility model uses a waste gas absorption device to treat exhaust gas, effectively preventing the escape of toxic and harmful gases and ensuring the safety of the test device during operation.

[0017] (4) The utility model can realize online monitoring of pH value and redox potential of each storage tank and remote control of various pumps, thereby improving the operability of the test device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall connection structure of the utility model;

[0019] In the figure: 1-preparation liquid storage tank, 2-liquid storage tank, 3-reagent storage tank, 4-primary gas-liquid mixer, 5-secondary gas-liquid mixer, 6-tertiary gas-liquid mixer, 7-primary reaction storage tank, 8-secondary reaction storage tank, 9-tertiary reaction storage tank, 10-quaternary reaction storage tank, 11-filtered liquid storage tank, 12-preparation liquid storage tank delivery pump, 13-reagent storage tank delivery pump, 14-magnetic centrifugal pump, 15-primary reaction tank peristaltic pump, 16-secondary reaction tank peristaltic pump, 17-tertiary reaction tank peristaltic pump, 18-gas cylinder, 19-gas quantitative flowmeter, 20-Venturi jet mixer, 21-liquid flow control valve, 22-float flowmeter, 23-PLC controller, 24-filter, 25-waste gas absorption device. DETAILED DESCRIPTION

[0020] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0021] like Figure 1 As shown, a high-efficiency multi-stage gas-liquid mixing reaction device includes a gas cylinder 18, a gas quantitative flow meter 19, a venturi ejector 20, a liquid preparation tank 2, a liquid flow control valve 21, a first-stage gas-liquid mixer 4, a second-stage gas-liquid mixer 5, a third-stage gas-liquid mixer 6, a first-stage reaction tank 7, a second-stage reaction tank 8, a third-stage reaction tank 9, a fourth-stage reaction tank 10, a filter 24, a filtered liquid tank 11, an exhaust gas absorption device 25, and a PLC controller 23.

[0022] The standby liquid storage tank 1 is connected to the first input port of the liquid preparation storage tank 2 through the standby liquid storage tank delivery pump 12, and the second input port of the liquid preparation storage tank 2 is connected to the reagent storage tank 3 through the reagent storage tank delivery pump 13; the liquid preparation storage tank 2 is connected to the input port of the venturi jet mixer 20 through the magnetic centrifugal pump 14, and the other input port of the venturi jet mixer 20 is connected to the output port of the gas cylinder 18 through the gas quantitative flow meter 19; the output port of the venturi jet mixer 20 is connected to the input port at the bottom of the primary gas-liquid mixer 4, and the primary gas-liquid mixer 4 is connected in series with the secondary gas-liquid mixer 5 and the tertiary gas-liquid mixer 18. The mixer is connected, and after multi-stage gas-liquid mixing, it overflows to the input port of the primary reaction tank 7; the bottom output port of the primary reaction tank 7 is connected to the input port of the secondary reaction tank 8 through the primary reaction tank peristaltic pump 15, the bottom output port of the secondary reaction tank 8 is connected to the input port of the tertiary reaction tank 9 through the secondary reaction tank peristaltic pump 16, and the bottom output port of the tertiary reaction tank 9 is connected to the quaternary reaction tank 10 through the tertiary reaction tank peristaltic pump 17; the bottom output port of the quaternary reaction tank 10 is connected to the input port of the filter 24 through a pipeline, and the output port of the filter 24 is connected to the filtered liquid storage tank 11.

[0023] A circulation pipeline is arranged between the liquid preparation tank 2 and the magnetic centrifugal pump 14. A liquid flow control valve 21 and a float flow meter 22 are arranged on the pipeline between the liquid preparation tank 2 and the venturi jet mixer 20. The gas and liquid flows in the reaction system are quantitatively controlled by the gas quantitative flow meter, the liquid flow control valve and the float flow meter, respectively.

[0024] The first-stage gas-liquid mixer 4, the second-stage gas-liquid mixer 5 and the third-stage gas-liquid mixer 6 are equipped with polytetrafluoroethylene stirring blades, and a multi-stage series connection is adopted to prolong the gas-liquid mixing time.

[0025] The liquid preparation tank 2, the primary reaction tank 7, the secondary reaction tank 8, the tertiary reaction tank 9, and the quaternary reaction tank 10 are equipped with a pH meter and a redox potentiometer with temperature compensation function; the pH meter and the redox potentiometer with temperature compensation function are connected to the PLC controller 23 to realize online monitoring of data. The liquid preparation tank delivery pump 12, the reagent tank delivery pump 13, the magnetic centrifugal pump 14, the gas quantitative flow meter 19, the liquid flow control valve 21, the float flow meter 22, the primary reaction tank peristaltic pump 15, the secondary reaction tank peristaltic pump 16, and the tertiary reaction tank peristaltic pump 17 are connected to the PLC controller 23 to realize remote automatic control of various pump bodies.

[0026] The liquid preparation tank 2, the primary reaction tank 7, the secondary reaction tank 8, the tertiary reaction tank 9, and the quaternary reaction tank 10 are provided with heating devices, which can realize temperature control of the liquid preparation tank, the primary reaction tank, the secondary reaction tank, the tertiary reaction tank, and the quaternary reaction tank.

[0027] Toxic and harmful gases in the primary reaction tank 7, the secondary reaction tank 8, the tertiary reaction tank 9, and the quaternary reaction tank 10 in the high-efficiency multi-stage gas-liquid mixing reaction device are treated with tail gas through the waste gas absorption device 25.

[0028] The utility model can be used for gas-liquid mixed reactions in the field of hydrometallurgy, mainly for gas-liquid mixed reactions such as impurity removal of impure electrolytes and purification of wastewater containing heavy metal ions. The working process of the utility model is as follows:

[0029] The liquid in the reserve liquid storage tank 1 and the reagent in the reagent storage tank 3 enter the liquid preparation storage tank 2 through the reserve liquid storage tank delivery pump 12 and the reagent storage tank delivery pump 13, and the liquid preparation storage tank 2 enters the venturi jet mixer 20 through the magnetic centrifugal pump 14. The gas participating in the reaction enters the venturi jet mixer 20 through the gas quantitative flowmeter 19. After the gas and liquid are mixed, they enter from the bottom 4 of the primary gas-liquid mixer, are output from the side outlet, and enter the secondary gas-liquid mixer 5 and the tertiary gas-liquid mixer 6 in series. Overflow from the side outlet of the tertiary gas-liquid mixer to the primary reaction storage tank 7, the solution enters the secondary reaction tank 8 from the bottom through the peristaltic pump 15, and enters the secondary reaction tank 8, the tertiary reaction tank 9, and the quaternary reaction tank 10 in series. The solution overflows to the filter 24 for solid-liquid separation and finally enters the filtered liquid storage tank 11. The tail gas in the quaternary reaction tank enters the wastewater absorption device 25 for treatment and then is discharged. After the reaction is completed, the heating devices on the liquid preparation tank 2, the primary reaction tank 7, the secondary reaction tank 8, the tertiary reaction tank 9, and the quaternary reaction tank 10 are turned off.

[0030] In the utility model, a multi-stage gas-liquid mixer is added between the venturi ejector and the primary reaction tank, which prolongs the gas-liquid mixing time and further improves the gas-liquid mixing efficiency. During the reaction process, the gas and liquid flow rates are adjusted by a gas quantitative flow meter and a liquid flow control valve, respectively, which improves the accuracy of the measurement of the entire reaction system and facilitates the calculation of material dosage. The tail gas generated during the test is treated by a wastewater absorption device, which effectively avoids the escape of toxic and harmful gases and improves the safety and reliability of the test device. The utility model has good airtightness, can realize efficient and continuous gas-liquid mixing reaction, and has the characteristics of simple operation, high safety, and strong stability.

[0031] The above are only preferred examples of the present invention. It should be pointed out that for ordinary technicians in this field, under the technical inspiration provided by the present invention, as common knowledge in the mechanical field, other equivalent variations and improvements can be made, which should also be regarded as the protection scope of the present invention.

Claims

1. A high-efficiency multi-stage gas-liquid mixing reaction device, characterized in that: The invention comprises a reserve liquid storage tank (1), a liquid preparation storage tank (2), a primary gas-liquid mixer (4), a secondary gas-liquid mixer (5), a tertiary gas-liquid mixer (6), a primary reaction storage tank (7), a secondary reaction storage tank (8), a tertiary reaction storage tank (9), a quaternary reaction storage tank (10), and a filtered liquid storage tank (11); the reserve liquid storage tank (1) is connected to a first input port of the liquid preparation storage tank (2) via a reserve liquid storage tank delivery pump (12); the liquid preparation storage tank (2) is connected to an input port of a venturi jet mixer (20) via a magnetic centrifugal pump (14); another input port of the venturi jet mixer (20) is connected to an output port of a gas cylinder (18) via a gas quantitative flow meter (19); the output port of the venturi jet mixer (20) is connected to an input port at the bottom of the primary gas-liquid mixer (4); The first-stage gas-liquid mixer (4) is connected in series with the second-stage gas-liquid mixer (5) and the third-stage gas-liquid mixer (6), and overflows to the input port of the first-stage reaction tank (7) after multi-stage gas-liquid mixing; the bottom output port of the first-stage reaction tank (7) is connected to the input port of the second-stage reaction tank (8) through a first-stage reaction tank peristaltic pump (15); the bottom output port of the second-stage reaction tank (8) is connected to the input port of the third-stage reaction tank (9) through a second-stage reaction tank peristaltic pump (16); the bottom output port of the third-stage reaction tank (9) is connected to the fourth-stage reaction tank (10) through a third-stage reaction tank peristaltic pump (17); the bottom output port of the fourth-stage reaction tank (10) is connected to the input port of the filter (24) through a pipeline, and the output port of the filter (24) is connected to the filtered liquid storage tank (11).

2. A high-efficiency multi-stage gas-liquid mixing reaction device as claimed in claim 1, characterized in that: The second input port of the liquid preparation tank (2) is connected to the reagent tank (3) via a reagent tank delivery pump (13).

3. A high-efficiency multi-stage gas-liquid mixing reaction device as claimed in claim 1, characterized in that: A circulation pipeline is arranged between the liquid preparation storage tank (2) and the magnetic centrifugal pump (14).

4. A high-efficiency multi-stage gas-liquid mixing reaction device as claimed in claim 1, characterized in that: A liquid flow control valve (21) and a float flow meter (22) are provided on the pipeline between the liquid preparation storage tank (2) and the Venturi jet mixer (20).

5. A high-efficiency multi-stage gas-liquid mixing reaction device as claimed in claim 1, characterized in that: The first-stage gas-liquid mixer (4), the second-stage gas-liquid mixer (5), and the third-stage gas-liquid mixer (6) are equipped with built-in polytetrafluoroethylene stirring blades, and a multi-stage series connection method is adopted to extend the gas-liquid mixing time.

6. A high-efficiency multi-stage gas-liquid mixing reaction device as claimed in claim 1, characterized in that: The liquid preparation tank (2), the primary reaction tank (7), the secondary reaction tank (8), the tertiary reaction tank (9), and the quaternary reaction tank (10) are equipped with a pH meter and a redox potentiometer with a temperature compensation function; the pH meter and the redox potentiometer with a temperature compensation function are connected to a PLC controller (23).

7. A high-efficiency multi-stage gas-liquid mixing reaction device as claimed in claim 1, characterized in that: A heating device is provided on the liquid preparation tank (2), the primary reaction tank (7), the secondary reaction tank (8), the tertiary reaction tank (9), and the quaternary reaction tank (10).

8. The high-efficiency multi-stage gas-liquid mixing reaction device according to claim 1, characterized in that: The tail gas in the primary reaction storage tank (7), the secondary reaction storage tank (8), the tertiary reaction storage tank (9), and the quaternary reaction storage tank (10) is connected to the input port of the waste gas absorption device (25) through a gas pipeline, and is discharged after absorption.

9. A high-efficiency multi-stage gas-liquid mixing reaction device as claimed in claim 1 or 3, characterized in that: The liquid storage tank delivery pump (12), the reagent storage tank delivery pump (13), the magnetic centrifugal pump (14), the gas quantitative flow meter (19), the liquid flow control valve (21), the float flow meter (22), the primary reaction tank peristaltic pump (15), the secondary reaction tank peristaltic pump (16), and the tertiary reaction tank peristaltic pump (17) are connected to the PLC controller (23).

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