Precise feeding device for extracting agent regeneration tower

Abstract

The utility model discloses a precise feeding device for an extracting agent regeneration tower. The precise feeding device comprises the extracting agent regeneration tower, a charging hopper; the first vibrator is mounted on the side surface of the feeding hopper; one end of the first transition pipeline is fixedly connected with the bottom of the feeding hopper; the first control valve is mounted on the side surface of the first transition pipeline; one end of the short pipe is fixedly connected with the other end of the transition pipeline; the second vibrator is mounted on the side surface of the short pipe; one end of the second transition pipeline is fixedly connected with the other end of the short pipe, and the other end of the second transition pipeline extends into the extracting agent regeneration tower; the second control valve is installed on the side face of the second transition pipeline. The feeding device has the advantages that timing feeding is achieved by controlling the opening and closing time of the first control valve and the second control valve, and quantitative feeding is achieved by selecting the length of the short pipe.

Description

Technical Field

[0001] This utility model relates to the field of extractant regeneration technology, and in particular to a precision feeding device for the extractant regeneration tower in a wet phosphoric acid extraction and purification equipment. Background Technology

[0002] Currently, in the wet-process phosphoric acid purification process, many chemical companies use organic solvents as extractants to purify phosphoric acid, and then return it to the system through a solvent regeneration device to improve the utilization of the extractant. However, during the wet-process phosphoric acid purification process, the extractant inevitably carries some impurities such as organic matter and metal ions, which seriously affects the recovery and reuse of the extractant.

[0003] Chinese Utility Model Patent Publication No. CN218924659U discloses a regeneration device for tributyl phosphate extractant, including a static mixer, an alkali preparation tank, an alkali pump, an extraction pump, a bag filter, a centrifugal extractor, and a waste alkali collection tank. It employs a synergistic processing technology of "static mixer + alkali preparation tank + bag filter + centrifugal extractor + waste alkali collection tank" to regenerate and subsequently process the tributyl phosphate extractant. This patent, from a process perspective, uses multiple devices in combination to regenerate the tributyl phosphate extractant, which differs from the solution proposed in this application. Utility Model Content

[0004] The technical problem to be solved by this invention is that the existing extractant regeneration towers do not perform well in treating extractants. To address this, a precision feeding device for extractant regeneration towers is provided.

[0005] The technical solution of this utility model is: a precision feeding device for an extractant regeneration tower, comprising: an extractant regeneration tower; a feeding hopper; a first vibrator, the first vibrator being installed on the side of the feeding hopper; a first transition pipe, one end of the first transition pipe being fixedly connected to the bottom of the feeding hopper; a first control valve, the first control valve being installed on the side of the first transition pipe; a short pipe, one end of the short pipe being fixedly connected to the other end of the transition pipe; a second vibrator, the second vibrator being installed on the side of the short pipe; a second transition pipe, one end of the second transition pipe being fixedly connected to the other end of the short pipe, the other end of the second transition pipe extending into the extractant regeneration tower; and a second control valve, the second control valve being installed on the side of the second transition pipe.

[0006] In the above scheme, one end of the first transition pipe is fixedly connected to the bottom of the feeding hopper via a flange.

[0007] In the above scheme, the other end of the first transition pipe is fixedly connected to one end of the short pipe through a flange.

[0008] In the above scheme, one end of the second transition pipe is fixedly connected to the other end of the short pipe through a flange.

[0009] In the above scheme, the other end of the second transition pipe is connected to an extension pipe located inside the extractant regeneration tower via a flange.

[0010] The extractant regeneration tower described in the above scheme has a built-in stirring mechanism, which includes a motor located at the top of the extractant regeneration tower. The motor is driven by a rotating shaft, and several stirring blades are symmetrically distributed on the rotating shaft.

[0011] The stirring paddle described in the above scheme is a straight pipe with a blind hole at its free end. A sliding rod is slidably fitted inside the blind hole, and one end of the sliding rod is provided with a limiting boss that cooperates with the blind hole.

[0012] The beneficial effects of this utility model are that it achieves timed feeding by controlling the opening and closing times of the first control valve and the second control valve, and achieves quantitative feeding by selecting the length of the short pipe. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the present invention;

[0014] In the diagram, 1 is the extractant regeneration tower, 2 is the feeding hopper, 3 is the first vibrator, 4 is the first control valve, 5 is the short pipe, 6 is the second vibrator, 7 is the second control valve, 8 is the slide bar, 9 is the first transition pipe, 10 is the second transition pipe, and 11 is the extension pipe. Detailed Implementation

[0015] The present invention will be further described below with reference to the accompanying drawings.

[0016] A precision feeding device for an extractant regeneration tower includes: an extractant regeneration tower 1; a feeding hopper 2; a first vibrator 3, which is installed on the side of the feeding hopper; a first transition pipe 9, one end of which is fixedly connected to the bottom of the feeding hopper; a first control valve 4, which is installed on the side of the first transition pipe; a short pipe 5, one end of which is fixedly connected to the other end of the transition pipe; a second vibrator 6, which is installed on the side of the short pipe; a second transition pipe 10, one end of which is fixedly connected to the other end of the short pipe, and the other end of which extends into the extractant regeneration tower; and a second control valve 7, which is installed on the side of the second transition pipe.

[0017] When it is necessary to add oxidant to the extractant regeneration tower 1, add an appropriate amount of oxidant to the feeding hopper 2. After starting the program, control the first control valve 4 to open and the first vibrator 3 to vibrate at the same time, so that the material is fully filled into the short tube 5 for quantitative measurement. After quantitative measurement is completed, close the first control valve 4 and open the second control valve 7. At the same time, the second vibrator 6 vibrates, so that the material falls fully into the extractant regeneration tower 1.

[0018] The connection between the transition pipe and the bottom of the feeding hopper, as well as the short pipe, can be welded, riveted, or bolted, preferably a detachable flange connection. The connection between the second transition pipe and the other end of the short pipe can also be welded, riveted, or bolted, preferably a detachable flange connection.

[0019] As one embodiment of the present invention, the other end of the second transition pipe is connected to an extension pipe 11 located in the extractant regeneration tower via a flange.

[0020] The components are fixed together by flange connection, which facilitates daily maintenance and allows for easy adjustment of the feeding amount according to the process. When it is necessary to change the feeding amount, only short pipe 5 needs to be replaced with a short pipe of the corresponding length.

[0021] The extractant regeneration tower has a built-in stirring mechanism, which includes a motor located at the top of the extractant regeneration tower. The motor is driven by a rotating shaft, and several stirring blades are symmetrically distributed on the rotating shaft.

[0022] In a preferred embodiment of this invention, the stirring paddle is a straight tube with a blind hole at its free end. A sliding rod 8 is slidably fitted inside the blind hole. One end of the sliding rod has a limiting boss that mates with the blind hole. When the stirring paddle is rotated by the rotating shaft, the sliding rod extends outward from the blind hole, thereby expanding the stirring range of the stirring paddle and ensuring thorough mixing of the oxidant and extractant. The limiting boss prevents the sliding rod from completely detaching from the straight tube.

[0023] The above embodiments can be combined arbitrarily as needed, and as long as the resulting solutions do not conflict, they all fall within the protection scope of this utility model.

Claims

1. A precision feeding device for extract regenerator, characterized in that it comprises: The utility model provides an extraction agent regenerating tower, which comprises an extraction agent regenerating tower (1), a feeding hopper (2), a first vibrator (3) installed on the side of the feeding hopper, a first transition pipe (9) with one end fixed to the bottom of the feeding hopper, a first control valve (4) installed on the side of the first transition pipe, a short pipe (5) with one end fixed to the other end of the transition pipe, a second vibrator (6) installed on the side of the short pipe, a second transition pipe (10) with one end fixed to the other end of the short pipe and the other end extending into the extraction agent regenerating tower, and a second control valve (7) installed on the side of the second transition pipe.

2. The precision feeding device for the extractant regenerator column according to claim 1, characterized in that: One end of the first transition pipe is fixed to the bottom of the feeding hopper through a flange.

3. The precision feeding device for the extractant regenerator column according to claim 1, characterized in that: The other end of the first transition pipe is fixed to one end of the short pipe through a flange.

4. The precision feeding device for extractant regenerator as claimed in claim 1, characterized in that: One end of the second transition pipe is fixed to the other end of the short pipe through a flange.

5. The precision feeding device for extractant regenerator as claimed in claim 1, characterized in that: The other end of the second transition pipe is connected with an extension pipe (11) in the extraction agent regenerating tower through a flange.

6. The precision feeding device for extractant regenerator as claimed in claim 1, characterized in that: The extraction agent regenerating tower is provided with a stirring mechanism, which comprises a motor at the top of the extraction agent regenerating tower, a rotating shaft drivingly connected to the motor, and a plurality of stirring paddles symmetrically distributed on the rotating shaft.

7. The precision feeding device for the extractant regenerator column according to claim 6, characterized in that: The stirring paddles are straight pipes with blind holes at the free ends, the blind holes are slidably connected with slide rods (8), and one end of each slide rod is provided with a limiting boss matched with the blind hole.

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