Evaporator capable of reducing backmixing effect

Abstract

An evaporator capable of reducing the backmixing effect comprises an evaporator body, a material inlet, an evaporated steam outlet and a concentrated solution outlet are formed in the evaporator body, a spiral evaporator and a spiral evaporator rotating shaft are arranged in the evaporator body, and a partition plate is additionally arranged in the evaporator body. The partition plate is vertically fixed on the spiral evaporator rotating shaft and is driven by the spiral evaporator rotating shaft to synchronously rotate; the plane of the partition plate is parallel to the radial plane of the spiral evaporator rotating shaft. According to the utility model, turbulent materials in the evaporator can be effectively prevented from directly and quickly entering the discharging end from the feeding end to influence the concentration of a discharged concentrated solution, and the concentration of the discharging end can be accurately controlled.

Description

Technical Field

[0001] This utility model relates to the field of chemical equipment technology, specifically to an evaporator that reduces backmixing. Background Technology

[0002] An evaporator is a commonly used piece of chemical equipment. Liquid materials enter the evaporator body, are heated, and propelled by a screw propeller. The evaporated vapor is output from the gas phase outlet, and the concentrated liquid is output from the concentrate outlet. However, during evaporation, the liquid inside the evaporator body generally exhibits turbulent flow. Under the stirring action of the screw propeller, newly entering material rapidly flows directly from the feed end to the discharge end due to turbulence, especially when process conditions change suddenly, making the turbulence phenomenon more severe. This has a certain impact on the concentration of the concentrate at the discharge end, and due to the turbulence, precise control of the discharge concentration is challenging. Summary of the Invention

[0003] The technical problem to be solved by this utility model is to solve the problems existing in the prior art and provide an evaporator that reduces back-mixing effect, prevents turbulent materials in the evaporator from directly and quickly entering the discharge end from the feed end, affecting the concentration of the discharge concentrate, and achieves precise control of the discharge end concentration.

[0004] The technical solution adopted in this utility model is:

[0005] An evaporator for reducing backmixing includes an evaporator body with a material inlet, an evaporation vapor outlet, and a concentrate outlet. The evaporator body contains a spiral evaporator and a spiral evaporator shaft. A baffle is added inside the evaporator body. The baffle is vertically fixed on the spiral evaporator shaft and rotates synchronously driven by the spiral evaporator shaft. The plane of the baffle is parallel to the radial plane of the spiral evaporator shaft.

[0006] In the above technical solution, there are one or more partitions, the plane shape of the partition is the same as the cross-sectional shape of the inner cavity of the evaporator body, the plane area of ​​the partition is slightly smaller than the cross-sectional area of ​​the inner cavity of the evaporator body, and the partition can rotate radially within the evaporator body, with the outer periphery of the partition and the inner cavity wall of the evaporator body having a clearance fit.

[0007] In the above technical solution, the partition plate has multiple perforations.

[0008] In the above technical solution, the spiral evaporator adopts a spiral hollow tube, the spiral evaporator shaft adopts a hollow shaft, the spiral hollow tube of the spiral evaporator is connected to the hollow shaft of the spiral evaporator shaft, and the hollow shaft end of the spiral evaporator shaft is connected to a heating source inlet and a heating source outlet.

[0009] In the above technical solution, a drive motor is connected to the end of the spiral evaporator shaft.

[0010] In the above technical solution, the vapor outlet on the evaporator body is connected to the gas-liquid separation chamber. Beneficial effects

[0011] This invention features an evaporator body with an internal spiral evaporator and a rotating shaft that connects to an externally sourced heat source for heating, evaporating, and concentrating materials. The spiral tube of the evaporator also has a spiral propulsion function. To prevent material entering the evaporator body from the inlet from rapidly flowing into the outlet due to turbulence, one or more baffles are installed within the evaporator body's internal cavity. These baffles are fixed to the spiral evaporator's rotating shaft and rotate together with the evaporator. Due to the baffles, turbulent back-mixing is effectively prevented, preventing material from rapidly reaching the outlet and ensuring uniform heating, evaporation, and concentration. This guarantees consistent concentration of the concentrated liquid at the outlet and achieves precise control over the product quality at the outlet. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model.

[0013] Attached image captions:

[0014] 1-Evaporator body, 2-Material inlet, 3-Drive motor, 4-Gas phase outlet, 5-Gas-liquid separation chamber, 6-Heating source inlet, 7-Heating source outlet, 8-Concentrate outlet, 9-Baffle plate, 10-Spiral evaporator, 11-Spiral evaporator shaft.

[0015] Copy 11 technical solution content Detailed Implementation

[0016] See Figure 1This utility model discloses an evaporator for reducing backmixing, comprising an evaporator body with a material inlet, an evaporation vapor outlet, and a concentrate outlet. The evaporator body contains a spiral evaporator and a spiral evaporator shaft. A baffle plate is added inside the evaporator body, vertically fixed to the spiral evaporator shaft and driven to rotate synchronously by the shaft. The plane of the baffle plate is parallel to the radial plane of the spiral evaporator shaft. There are one or more baffle plates, the baffle plate's plane shape is the same as the cross-sectional shape of the evaporator body's inner cavity, the baffle plate's plane area is slightly smaller than the cross-sectional area of ​​the evaporator body's inner cavity, and the baffle plate can rotate radially within the evaporator body. The outer circumference of the baffle plate is clearance-fitted with the inner wall of the evaporator body's inner cavity. Multiple perforations are formed on the baffle plate. The spiral evaporator uses a spiral hollow tube, and the spiral evaporator shaft also uses a hollow shaft. The spiral hollow tube of the spiral evaporator is connected to the hollow shaft of the spiral evaporator shaft, and the hollow shaft end of the spiral evaporator shaft is connected to a heating source inlet and a heating source outlet. The spiral evaporator shaft is connected to a drive motor; the vapor outlet on the evaporator body is connected to a gas-liquid separation chamber.

Claims

1. An evaporator for reducing the effects of back mixing, characterized by: The evaporator body is provided with a material inlet, an evaporated vapor outlet and a concentrated liquid outlet, and is internally provided with a spiral evaporator and a spiral evaporator rotating shaft.

2. The reduced backmixing effect evaporator of claim 1, wherein: The baffle is one or more, and the baffle plane shape is the same as the cross section shape of the inner cavity of the evaporator body, the baffle plane area is slightly smaller than the cross section area of the inner cavity of the evaporator body, and the baffle can rotate radially in the evaporator body, and the baffle outer periphery is in clearance fit with the inner cavity wall of the evaporator body.

3. The reduced back mixing effect evaporator of claim 1, wherein: The baffle is provided with a plurality of perforations.

4. The reduced backmix effect evaporator of claim 1, wherein: The spiral evaporator adopts a spiral hollow tube, the spiral evaporator rotating shaft adopts a hollow shaft, the spiral hollow tube of the spiral evaporator is in communication with the hollow shaft of the spiral evaporator rotating shaft, and the hollow shaft end of the spiral evaporator rotating shaft is connected with a heating heat source inlet and a heating heat source outlet.

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