CN-117443022-B - Energy-saving type mixed type sieve plate extraction tower system

CN117443022BCN 117443022 BCN117443022 BCN 117443022BCN-117443022-B

Abstract

The application discloses an energy-saving type mixed type sieve plate extraction tower system, and relates to the technical field of towers. The driving magnet intermittently inputs energy into the mixed type sieve plate extraction tower, so that reciprocating vibration and circular motion of the sieve plate are realized, the energy consumption is reduced, the failure rate is reduced, and the influence of the change of the scale and the size of the tower is avoided. The system comprises a tower body assembly and a control unit, wherein a top assembly is arranged on the tower body assembly, a skirt assembly is arranged at the bottom of the tower body assembly, a transmission shaft and a bottom supporting assembly are arranged in the tower body assembly, the top assembly comprises a shell and an axial driving magnet assembly, an axial driven magnet is arranged on the transmission shaft, the bottom supporting assembly comprises a supporting cylinder and a spring, a circumferential driving magnet assembly is arranged in the tower body assembly, a circumferential driven magnet is arranged at the bottom of a sieve plate, soft magnets are adopted for the axial driving magnet assembly and the circumferential driving magnet assembly, hard magnets are adopted for the axial driven magnet and the circumferential driven magnet, and the control unit can control magnetizing and demagnetizing frequencies of the two driving magnet assemblies.

Inventors

ZHANG HONGSHENG
DONG MINGZHI
CHENG TING
JIANG JIANXU
ZHANG DEQIANG
GUO ZHIQIN
ZHANG YIRAN
GUO KAI
YU MEIQI
LU JINGYU
ZHU LIN
FAN WENYING

Assignees

燕山大学

Dates

Publication Date: 20260512
Application Date: 20231121

Claims (9)

1. An energy-saving type mixed type sieve plate extraction tower system is characterized in that, Comprises a tower body component and a control unit; The top part of the tower body assembly is provided with a top assembly, the bottom part of the tower body assembly is provided with a skirt assembly, a transmission shaft and a bottom support assembly are arranged in the skirt assembly, the top assembly comprises a shell arranged on the tower body assembly, an axial driving magnet assembly is arranged in the shell, a plurality of sieve plates are arranged on the transmission shaft, the upper end of the transmission shaft stretches out of the tower body assembly and then enters the shell, the upper end of the transmission shaft is provided with an axial driven magnet, the axial driven magnet is positioned below the axial driving magnet assembly, the axial driving magnet assembly can attract or repel the axial driven magnet so as to drive the sieve plates to reciprocate up and down, and the bottom support assembly comprises a support cylinder fixedly connected to the bottom wall surface of the tower body assembly and a spring arranged in the support cylinder; The bottom of the sieve plate is provided with a circumferential driven magnet, the tower body assembly is internally provided with a circumferential driving magnet assembly, the circumferential driving magnet assembly can attract or repel the circumferential driven magnets so as to drive the sieve plate to swing around the transmission shaft, the number of the circumferential driving magnet assemblies is two, the two groups of the circumferential driving magnet assemblies are symmetrically arranged relative to the central line of the tower body assembly, each group of the circumferential driving magnet assemblies comprises a circumferential driving magnet and a second winding coil arranged outside the circumferential driving magnet, the circumferential driving magnet is of a cuboid structure and is arranged along the horizontal direction, the second winding coils are connected with the control unit through two wires, the number of the circumferential driven magnets is also two, the two circumferential driven magnets are symmetrically arranged relative to the axis of the sieve plate, and the circumferential driven magnets are of a cuboid structure and are arranged along the horizontal direction; the axial driving magnet component and the circumferential driving magnet component both adopt soft magnets; the axial driven magnet and the circumferential driven magnet are hard magnets; the control unit is electrically connected with the axial driving magnet assembly and the circumferential driving magnet assembly, and can control the magnetizing and demagnetizing frequencies of the axial driving magnet assembly and the circumferential driving magnet assembly.
2. The energy-saving type mixed moving type sieve plate extraction tower system according to claim 1, wherein the tower body component comprises a cylinder body, an upper end socket and a lower end socket which are connected to two ends of the cylinder body in a sealing mode, an extraction phase outlet, a raffinate phase outlet, a raw material liquid inlet and an extractant inlet are formed in the cylinder body, control valves are arranged at the raw material liquid inlet and the extractant inlet, and the circumferential driving magnet component is fixedly connected to the inner side wall of the cylinder body.
3. The energy-saving type mixed moving type sieve plate extraction tower system according to claim 2, wherein the shell comprises a cone shell and a top cover connected to an upper end opening part of the cone shell, the cone shell is a hollow round table, the top cover is a circular plate, the axial driving magnet assembly is connected to the bottom of the top cover through countersunk head screws, and a rain-proof cap is arranged on the upper surface of the top cover and is located above the countersunk head screws.
4. An energy efficient hybrid screen extraction tower system according to claim 3, wherein the axial drive magnet assembly comprises an axial drive magnet arranged in a vertical direction and a first wound coil arranged outside the axial drive magnet, the axial drive magnet being a cylinder, the first wound coil being connected to the control unit by two wires, the axial driven magnet also being a cylinder.
5. The energy efficient hybrid screen plate extraction column system of claim 4 wherein the side walls of the support cylinders are provided with a plurality of through holes for ingress and egress of liquid from the column.
6. The energy efficient hybrid screen extraction tower system of claim 5, wherein the axially driven magnet is threadably connected to the drive shaft.
7. The energy-saving type mixed type sieve plate extraction tower system according to claim 6, further comprising a detection unit, wherein the detection unit comprises a temperature sensor, two flow meters and a plurality of conductivity meters, the temperature sensor is arranged on the outer side of the top assembly, the two flow meters are respectively arranged at a raw material liquid inlet and an extractant inlet, and the plurality of conductivity meters are axially and uniformly distributed on the side wall of the tower body assembly.
8. The energy-efficient hybrid screen-plate extraction column system of claim 7, wherein the control unit is communicatively coupled to the detection unit, the control unit configured to: Receiving information acquired by the temperature sensor and the conductivity meter, and processing the information to obtain heating data of the axial driving magnet and an axial mixing rule in the tower; And receiving information acquired by the flowmeter, comparing the information with a preset value, and adjusting the opening of the control valve according to a comparison result until the data acquired by the flowmeter meets the requirement.
9. The energy efficient hybrid screen plate extraction tower system of claim 8, further comprising a monitoring unit capable of displaying axial drive magnet heating data, conductivity numbers and images, charge and demagnetization frequency settings, two phase flow and total experimental time.

Description

Energy-saving type mixed type sieve plate extraction tower system Technical Field The application relates to the technical field of tower equipment, in particular to an energy-saving type mixed type sieve plate extraction tower system. Background The extraction tower is a mass transfer device commonly used in petrochemical industry, nuclear chemical industry, environment and hydrometallurgy industry, and the purpose of transferring extracted components from one phase to the other phase is achieved by making mutually incompatible two-phase fluids contact with each other. The extraction tower has the advantages of large treatment capacity, small occupied area, relatively simple structure and the like. The extraction columns may be composed of a plurality of extraction columns, including simple stirring-free extraction columns, mainly sieve-plate columns, packed columns, spray columns, etc., pulsed extraction columns as energy input, mainly pulsed packed columns, pulsed sieve-plate columns, and extraction columns with mechanical stirring input, mainly turntable columns, scheibel mechanical stirring columns, kuhni columns, karr columns, etc. The reciprocating sieve plate extraction tower has the advantages of large flux, high efficiency, easiness in processing solid-containing materials, more uniform external energy distribution, suitability for processing an easily-emulsified system, low maintenance and operation cost and the like, and is increasingly widely applied. Reciprocating sieve plate extraction towers are also known as vibrating sieve plate towers. External energy is applied to fluid in the tower by means of up-and-down reciprocating motion of a main shaft with a plurality of sieve plates, so that the contact area of two-phase fluid in the tower is increased, and the two-phase fluid in the tower is promoted to be fully mixed. The main indexes for evaluating the performance of the reciprocating sieve plate extraction tower comprise dispersed phase retention fraction phi, dispersed phase droplet diameter d32, characteristic speed u0, mass transfer specific surface area a, continuous phase axial mixing coefficient Ec and total mass transfer coefficient koca, external energy applied to the fluid is mainly represented on index vibration intensity Af consisting of sieve plate amplitude A and vibration frequency f, and the vibration sieve plate tower is changed in amplitude and vibration frequency so as to optimize various fluid mechanics and mass transfer performance indexes, thus obtaining the optimal performance state of the vibration sieve plate tower. The traditional reciprocating sieve plate extraction tower usually uses a motor to drive a transmission shaft of the tower to complete reciprocating motion in a mode of eccentric wheel combination, the sieve plates continuously stir and enhance the front mixing and back mixing of a disperse phase, so that the flow of fluid in the tower deviates from the ideal plunger flow degree, the probability of the operation of a fluid emulsification area in the extraction tower is increased, and the mass transfer effect is influenced. Disclosure of Invention The embodiment of the application provides an energy-saving mixed type sieve plate extraction tower system, which realizes reciprocating vibration and circular motion of a sieve plate by intermittently inputting energy into a mixed type sieve plate extraction tower through a driving magnet, thereby not only reducing energy consumption and reducing failure rate, but also avoiding being influenced by the change of the scale and the size of the tower. In order to achieve the above purpose, the embodiment of the application provides an energy-saving type mixed-motion sieve plate extraction tower system, which comprises a tower body component and a control unit; the top of the tower body assembly is provided with a top assembly, the bottom of the tower body assembly is provided with a skirt assembly, and a transmission shaft and a bottom supporting assembly are arranged in the tower body assembly; the top assembly comprises a shell arranged on the tower body assembly, an axial driving magnet assembly is arranged in the shell, a plurality of sieve plates are arranged on the transmission shaft, a circumferential driving magnet assembly is arranged in the tower body assembly, the upper end of the transmission shaft stretches out of the tower body assembly and then enters the shell, an axial driven magnet is arranged at the upper end of the transmission shaft and is positioned below the axial driving magnet assembly, the axial driving magnet assembly can attract or repel the axial driven magnet to drive the sieve plates to reciprocate up and down, the bottom supporting assembly comprises a supporting cylinder fixedly connected to the bottom wall surface of the tower body assembly and a spring arranged in the supporting cylinder, a circumferential driven magnet is arranged at the bottom of the sieve plates, a circumferentia