CN-224207981-U - Stirring device and reaction device with stirring device and filtering mechanism

CN224207981UCN 224207981 UCN224207981 UCN 224207981UCN-224207981-U

Abstract

The utility model discloses a stirring device and a reaction device with the stirring device and a filtering mechanism. Belongs to the field of chemical production devices. The stirring device is arranged in the reaction container and comprises a stirring mechanism and a filtering mechanism, the stirring mechanism comprises a stirring rod and stirring paddles, the stirring rod is of a hollow tubular structure, the stirring rod and the reaction container are coaxially arranged, a discharge hole is formed in the upper end of the stirring rod, the upper end of the stirring rod extends upwards out of the top of the reaction container, the lower end of the stirring rod is a closed end, the stirring paddles are arranged at the lower end of the stirring rod, the filtering mechanism comprises a filter screen and an annular wall structure, the filter screen is of a closed curved surface structure formed around the stirring rod, and a filtering hole is formed in the filter screen. In the running process of the stirring device, the liquid tangentially contacts with the surface of the filtering mechanism in the rotating process due to the acting force of the blades, so that solid particles deposited on the surface are continuously washed by the shearing force to fall off, thereby realizing the self-cleaning function and needing no additional recoil system.

Inventors

SUN HAILONG
Hu Kangfei
WANG CAIJIE
WEI YANYU
DU WENBIN

Assignees

中国石油化工股份有限公司
中国石化扬子石油化工有限公司

Dates

Publication Date: 20260508
Application Date: 20250102

Claims (10)

1. A stirring device is characterized in that the stirring device is arranged in a reaction vessel and comprises a stirring mechanism and a filtering mechanism, The stirring mechanism comprises a stirring rod and stirring paddles; the stirring rod is of a hollow tubular structure, and is coaxially arranged with the reaction container, the upper end of the stirring rod is provided with a discharge hole, the upper end of the stirring rod extends upwards out of the top of the reaction container, the lower end of the stirring rod is a closed end, and the lower end of the stirring rod is provided with stirring paddles; the filter mechanism comprises a filter screen and an annular wall structure, wherein the filter screen is of a closed curved surface structure formed by surrounding a stirring rod, a filter hole is formed in the filter screen, and the annular wall structure is of a rod wall structure with a through hole on the stirring rod surrounded by the filter screen.
2. The stirring device as set forth in claim 1, wherein the total length of the annular wall structure is 20% -80% of the length of the stirring rod in the central axis direction, and each annular wall structure is provided with one or more through holes.
3. The stirring device as set forth in claim 1, wherein the filter net has a cylindrical structure, and the diameter of the filter hole of the filter net is 0.5-200 μm.
4. A stirring device as set forth in claim 3, wherein the diameter of said filter screen is 110% -1000% of the diameter of the inner wall of said stirring rod.
5. The stirring device as set forth in claim 1, wherein the number of the through holes provided in the annular wall structure is 1 to 100, and the aperture of the through holes is 1 to 50mm.
6. The stirring device according to claim 1, wherein 1-20 filter screens are arranged on the stirring rod, and 1-20 stirring blades are arranged on the stirring rod.
7. The stirring apparatus of claim 6, wherein the stirring rod is provided with stirring blades and a filter screen alternately from the lower end to the upper end.
8. A reaction device with a stirring device and a filtering mechanism, which is characterized by comprising the stirring device as claimed in any one of claims 1-7, and further comprising a reaction container, an air inlet, an air outlet and a feed inlet, wherein the feed inlet, the air inlet, the discharge outlet and the air outlet are arranged at the top of the reaction container.
9. The reactor apparatus of claim 8, wherein the reactor apparatus bottom further comprises one or more discharge ports different from the discharge port.
10. The reaction apparatus of claim 8 wherein the process material in the reaction vessel of the reaction apparatus is a fluid material; The fluid material is a solid-liquid mixture, wherein the solid-liquid mixture comprises solid particles with the average size of 1-1000 mu m, and the content of the solid particles in the solid-liquid mixture is 3-40wt%; The filtering mechanism of the stirring device is immersed below the liquid level of the fluid material in the reaction vessel in the working state.

Description

Stirring device and reaction device with stirring device and filtering mechanism Technical Field The utility model belongs to the field of chemical production devices, and relates to a stirring device and a reaction device with a stirring device and a filtering mechanism. Background The stirring device is a mechanical device widely applied at present, and is mainly used for stirring materials, and in order to enable the materials to be fully mixed, the patent CN213557030U promotes the materials to be fully and uniformly fused by arranging a plurality of groups of stirring paddles on the inner side of the reactor, so that the reaction rate is accelerated, and the production speed is improved. Patent CN211706062U discloses a catalyst filter for caprolactam hydrofining process, the invention uses barrel-shaped filter screen to make separation, and the catalyst is accumulated in the barrel-shaped filter screen, can be poured out from circular hole, and is convenient for collection and recovery. The device has the defect that the device collects the catalyst in the filter vat, recycles the catalyst after disassembly, but does not entrap the catalyst in the reaction vessel for direct recycling, and the operation steps are relatively complicated. In addition, the reaction process requires the brush to be rotated to scrape the filter screen for instant cleaning. Patent CN216727218U has agitating unit for sodium gluconate preparation of filter mechanism, through setting up rotatable filtration passageway, when stirring material, solution, filters the particulate matter in the material, and the particulate matter is held back in filtration passageway, and the material is thrown to the jar in to prevent that the material from containing particulate impurity in the jar, influence stirring quality. The filter pipeline of the device can separate impurity particles in materials, filtration and stirring are carried out simultaneously, but the impurity particles are remained in the filter pipeline, the pipeline is required to be disassembled for removing and cleaning the particle impurities, and the operation process is complex. The existing stirring device can fully stir and uniformly mix the reaction materials, but the invention of the stirring device with the filtering function is relatively less. How to effectively separate the catalyst and the reaction liquid in the reaction vessel, so that the catalyst is trapped in the kettle for recycling, and the problem still needs to be solved. Disclosure of utility model The utility model aims to provide a stirring device which is arranged in a reaction container and comprises a stirring mechanism and a filtering mechanism; The stirring mechanism comprises a stirring rod and stirring paddles; the stirring rod is of a hollow tubular structure, and is coaxially arranged with the reaction container, the upper end of the stirring rod is provided with a discharge hole, the upper end of the stirring rod extends upwards out of the top of the reaction container, the lower end of the stirring rod is a closed end, and the lower end of the stirring rod is provided with stirring paddles; The filter mechanism comprises a filter screen and an annular wall structure, wherein the filter screen is of a closed curved surface structure formed by surrounding a stirring rod, a filter hole is formed in the filter screen, and the annular wall structure is of a rod wall structure with a through hole on the stirring rod surrounded by the filter screen. The filtering mechanism is of a cylindrical structure and has the advantages of large filtering area, large flux, good filtering effect and the like. The stirring device provided by the utility model has the functions of stirring and filtering, realizes continuous and efficient separation of the product and the catalyst in the reactor, and has the advantages of high catalyst utilization rate and high reaction efficiency. The utility model also provides a reaction device with a stirring device and a filtering mechanism, which comprises a reaction container, a feed inlet and a discharge outlet, and the reaction device also comprises a stirring device (the stirring device and the filtering mechanism); 1. Stirring device The stirring device comprises a stirring rod and stirring paddles; The stirring rod is of a hollow tubular structure and is coaxially arranged with the reaction vessel; The upper end of the stirring rod is an open end, the upper end of the stirring rod extends upwards out of the top of the reaction vessel and is provided with a discharge port (preferably forming a single discharge port), and the filtering mechanism is configured to form a single inlet for the fluid contained in the inner cavity to enter the tubular channel through the through hole; the lower end of the stirring rod is a closed end, the closed end is a conical inclined surface, and the lower end of the stirring rod is provided with stirring blades; the rotation speed of the st