CN216571557U

CN216571557U - Tangential countercurrent spiral evaporator device applied to liquid evaporation

Info

Publication number: CN216571557U
Application number: CN202121837578.4U
Authority: CN
Inventors: 张炜; 刘瑞萍
Original assignee: Xi'an Dongfang Energy Engineering Co ltd
Current assignee: Xi'an Dongfang Energy Engineering Co ltd
Priority date: 2021-08-06
Filing date: 2021-08-06
Publication date: 2022-05-24
Anticipated expiration: 2031-08-06

Abstract

The utility model provides a tangential countercurrent spiral evaporator device applied to liquid evaporation, which comprises an evaporation tank, a spiral heater and a tangential countercurrent circulating water pump, wherein the evaporation tank is provided with a spiral heater; the evaporation tank and the spiral heater are designed into a whole, and the spiral heater is arranged at the lower part of the evaporation tank; the tangent countercurrent circulating water pump is respectively connected with the evaporating pot and the spiral heater through pipelines, and an ultrasonic descaling device is arranged on the outer wall of the lower side of the evaporating pot and the outer wall of the spiral heater. The whole evaporator has compact structure and realizes once completion of heat exchange and evaporation. The evaporation capacity can be improved, the buffeting of the pipeline is effectively eliminated, the service life of the evaporator is prolonged, and the uniformity and the high efficiency of medium heat exchange are ensured.

Description

Tangential countercurrent spiral evaporator device applied to liquid evaporation

Technical Field

The utility model relates to a device for the evaporation treatment of liquids.

Background

The evaporation equipment has extremely wide application in the fields of mechanical processing, liquid purification and environmental protection.

The traditional evaporator technology mainly adopts a tubular heater, and the principle of natural circulation or split type design adopts a circulating pump for secondary heat exchange. The disadvantages are that: large volume, short exchange time of cold and hot media and insufficient heat exchange of heat source. The natural circulation heat exchange tube has the phenomena of slow surface flow velocity, uneven heating, easy local overheating and easy scaling. The split type arrangement has secondary heat exchange, and the required temperature is higher than that of the integrated design.

In order to solve the problems in the prior art, the utility model provides a tangential countercurrent spiral evaporator applied to liquid evaporation, which is heat exchange and evaporation integrated equipment and has the characteristics of small volume, one-time completion of heat exchange and evaporation, high heat exchange efficiency and difficulty in scaling due to ultrasonic intervention.

SUMMERY OF THE UTILITY MODEL

The utility model provides a tangential countercurrent spiral evaporator device applied to liquid evaporation, which is characterized by comprising an evaporation tank and a spiral heater, wherein the evaporation tank is provided with a spiral heater; the evaporator tank body is divided into an upper part and a lower part, the lower part is a spiral heater, the upper part is an evaporation tank, and various parameters of the evaporation tank can meet the requirements of corresponding evaporation capacity and evaporation strength; the spiral heater is integrated at the lower part of the evaporation tank; and the tangential countercurrent circulating water pump is respectively connected with the evaporating pot and the spiral heater.

Furthermore, the spiral heater comprises an evaporation tube bundle which is in an asymmetric design, and each evaporation tube is wound in the evaporator in a spiral structure in a mode that an inner layer is sleeved with an outer layer in a multilayer mode, and the odd layer and the even layer are opposite in spiral; the tube bundle of each layer is designed to have nearly equal on-way resistance of each heating tube by adjusting the number, the bending radius and the spacing of the tube bundles.

Furthermore, the top of the evaporation tank is provided with a heated medium inlet and a vacuum port, the side surface of the evaporation tank is provided with a heated medium inlet, and the bottom of the spiral heater is provided with a heat source outlet.

Furthermore, a pump inlet and a pump outlet of the tangential countercurrent circulating water pump are sequentially connected with the evaporating pot and the spiral heater respectively.

Further, the evaporator system comprises a tangential counterflow circulating water pump, and the outlet of the heated medium enters the spiral heater through the side of the heater shell in the direction of the tangential counterflow line.

Furthermore, a plurality of ultrasonic descaling devices are arranged on the outer wall of the lower part of the evaporating pot and the outer wall of the spiral heater, and the ultrasonic descaling devices can select proper ultrasonic intensity and intervention time according to the characteristic evaporation temperature of the evaporated liquid.

Further, the arrangement mode of the heat source pipeline at the heat medium inlet pump port can adopt the following three arrangement modes according to actual needs: a. c, enabling the heating pipes which enter the evaporating tank body to independently enter the evaporating tank in a distributed mode, connecting the outside by using a main pipe on one or more horizontal planes, and enabling the three modes not to influence the design of the lower spiral heat exchanger.

Furthermore, the evaporator body adopts a double-layer structure arrangement, the interior of the evaporator body is kept in a vacuum state, and heat loss is reduced.

The utility model has the beneficial effects that:

1. the evaporator adopts an integrated design, the spiral heater is arranged at the lower part of the evaporating pot, the structure is compact, and the heat exchange and evaporation can be completed at one time.

2. The spiral stainless steel spiral heater adopts an asymmetric design, which is beneficial to better circulation of a heat source in a pipeline; each evaporating pipe is wound in the evaporator according to a certain rule in a spiral structure, and the structure prolongs the length of the heat exchange pipe on one hand, and greatly changes the state of fluid to strengthen heat transfer on the other hand, thereby improving the evaporating capacity. The tube bundle of every layer designs the on-the-way resistance that each heating pipe is nearly equal through the interval of adjusting its quantity, bend radius, tube bundle, guarantees medium heat exchange's even high-efficient.

3. The design of the built-in spiral pipeline can effectively eliminate the buffeting of the pipeline; the structure of spiral winding pipe for produce the pressure of expend with heat and contract with cold between the evaporating pipe, can fall to minimumly, improve life greatly.

4. The adoption of tangent line forced countercurrent heat exchange circulation enables the heated liquid to enter the shell side of the spiral heater along the tangent line direction, and the liquid entering the tank body spirally rises along the inner wall of the tank body in an eddy current manner, so that countercurrent heat exchange with a heating medium is fully realized; the process of spiral heat exchange at the tube side and the shell side is formed, heat exchange is carried out to the maximum extent, and the highest efficiency of the equipment is exerted.

Drawings

In order to more clearly illustrate the technical solution of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic structural diagram of the present invention

FIG. 2 is a schematic cross-sectional view of the outlet of the heated medium pump according to the present invention

In the figure, 1 is an evaporation tank, 2 is a spiral heater, 3 is an evaporation tube bundle and 4.

Heated medium inlet, 5 vacuum port, 6 heat medium pump port, 7 heat source

Outlet 8, pump inlet 9, pump outlet 10, tangent countercurrent circulating water pump 11.

An ultrasonic descaling device.

Detailed Description

In the description of the present invention, it is to be understood that the terms "top," "upper," "lower," "side," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings, which are used for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated, and thus are not to be construed as limiting the present invention. In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, e.g., as being fixed or detachable or integrally connected; the connection may be direct or indirect via an intermediate medium, and the connection may be internal to the two components. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example 1

A tangent countercurrent spiral evaporator device applied to liquid evaporation is characterized in that an evaporator system comprises an evaporation tank 1 and a spiral heater 2; the evaporator tank body is divided into an upper part and a lower part, the lower part is a spiral heater 2, the upper part is an evaporation tank 1, and various parameters of the evaporation tank 1 can meet the requirements of corresponding evaporation capacity and evaporation strength and are designed and manufactured; the spiral heater 2 is integrated at the lower part of the evaporation tank 1; and the tangential countercurrent circulating water pump 10 is respectively connected with the evaporating pot 1 and the spiral heater 2.

Furthermore, the spiral heater 2 comprises an evaporation tube bundle 3, the evaporation tube bundle 3 adopts an asymmetric design, and each evaporation tube is wound in the evaporator in a spiral structure according to an inner-outer multilayer loop and an odd-even layer spiral opposite mode; the tube bundle of each layer designs the on-way resistance of each heating pipe nearly equal by adjusting the quantity, the bending radius and the space of the tube bundle, and the uniformity and the high efficiency of medium heat exchange are ensured.

Furthermore, a heated medium inlet 4 and a vacuum port 5 are arranged on the top of the evaporation tank 1, a heat medium pump port 6 is arranged on the side surface of the evaporation tank 1, and a heat source outlet 7 is arranged on the bottom of the spiral heater 2.

Further, the evaporator system comprises a tangent countercurrent circulating water pump, and a pump inlet 8 and a pump outlet 9 of the tangent countercurrent circulating water pump 10 are sequentially connected with the evaporating tank 1 and the spiral heater 2 respectively.

Further, the heat medium pump port 6 enters the spiral heater 2 through the heater case side tangential against the flow line direction.

Furthermore, a plurality of ultrasonic descaling devices 11 are arranged on the outer wall of the lower part of the evaporating pot 1 and the outer wall of the spiral heater 2, and the ultrasonic descaling devices can select proper ultrasonic intensity and intervention time according to the characteristic evaporation temperature of the evaporated liquid.

Further, the arrangement of the heat source pipeline at the heat medium pump port 6 can adopt the following three arrangements according to actual needs: a. c, enabling the heating pipes which enter the evaporating tank body to independently enter the evaporating tank in a distributed mode, connecting the outside by using a main pipe on one or more horizontal planes, and enabling the three modes not to influence the design of the lower spiral heat exchanger.

Example 2

In practical production, the tangential countercurrent spiral evaporator device applied to liquid evaporation works as follows:

the heat source directly enters the spiral heater through the heat source inlet, heat exchange is realized in the spiral heater 2 through the stainless steel evaporation tube bundle 3 in the spiral heater, and the heat is discharged from the lower part of the spiral heater 2 to finish the heat release process.

Heated liquid enters the evaporation tank body from a heated medium inlet 4 at the upper part of the evaporation tank 1, after reaching the required liquid level height, a heat source enters the spiral heater from the shell side of the heat source inlet position of the spiral heater 2 along the tangential direction, the liquid entering the spiral heater 2 spirally rises along the vortex type on the inner wall of the spiral heater 2, the heat source enters the evaporation tank body at the inner part of the evaporation pipe tank body through an evaporation pipe bundle 3 in the spiral heater 2 to start heating, and bidirectional spiral countercurrent heat exchange with a heating medium is fully realized; simultaneously, starting a circulating pump, and pumping out liquid from the middle part of the evaporation tank through a pump inlet; the final concentrated liquid is discharged from the lower part. The adoption of tangent line forced countercurrent heat exchange circulation enables the heated liquid to enter the shell side of the spiral heater 2 along the tangent line direction, and the liquid entering the tank body spirally rises along the inner wall of the tank body in an eddy current manner, so that countercurrent heat exchange with a heating medium is fully realized; the process of spiral heat exchange at the tube side and the shell side is formed, heat exchange is carried out to the maximum extent, and the highest efficiency of the equipment is exerted.

Claims

1. A tangent countercurrent spiral evaporator device applied to liquid evaporation is characterized by comprising an evaporation tank (1), a spiral heater (2) and a tangent countercurrent circulating water pump (10); the evaporator tank body is divided into an upper part and a lower part, the lower part is provided with a spiral heater (2), the upper part is provided with an evaporation tank (1), and various parameters of the evaporation tank (1) can meet the corresponding evaporation capacity and evaporation strength and are designed and manufactured; the spiral heater (2) is integrated at the lower part of the evaporation tank (1); a tangent countercurrent circulating water pump (10) is respectively connected with the evaporating pot (1) and the spiral heater (2); the spiral heater (2) comprises an evaporation tube bundle (3), the evaporation tube bundle (3) adopts an asymmetric design, and each evaporation tube is wound in the evaporator in a spiral structure according to an inner-outer multilayer ring sleeve and an odd-even layer spiral opposite mode; the tube bundle of each layer is designed to have nearly equal on-way resistance of each heating tube by adjusting the number, the bending radius and the spacing of the tube bundles.

2. A tangential counterflow screw evaporator apparatus for evaporation of liquids as in claim 1 where the top of the evaporator tank (1) is equipped with heated medium inlet (4) and vacuum port (5), the side of the evaporator tank (1) is equipped with heat medium pump port (6), and the bottom of the screw heater (2) is equipped with heat source outlet (7).

3. A tangential counterflow screw evaporator arrangement for liquid evaporation according to claim 1, characterised in that the evaporator arrangement includes a tangential counterflow circulating water pump (10), the pump inlet (8) and the pump outlet (9) of which tangential counterflow circulating water pump (10) are in turn connected to the evaporator tank (1) and the screw heater (2), respectively.

4. A tangential counterflow screw evaporator unit for the evaporation of liquids as in claim 2, c h a r a c t e r i z e d in that the heat medium pump opening (6) enters the screw heater (2) through the heater shell side in the tangential counterflow line direction.

5. A tangential counterflow screw evaporator unit as claimed in claim 1, characterised in that the outer walls of the lower part of the evaporation vessel (1) and the outer walls of the screw heater (2) are provided with ultrasonic descaling means (11) with suitable ultrasonic intensity and intervention time depending on the characteristic evaporation temperature of the liquid to be evaporated.

6. A tangential counterflow screw evaporator unit as in claim 2 for evaporation of liquids where the heat source pipes at the heat medium pump port (6) are arranged as follows: a. the method comprises the following steps of (a) enabling a heat source to enter an evaporating tank from one position through centralized arrangement, b) enabling the heat source to enter the evaporating tank from multiple positions through distributed centralized arrangement, distributing heating pipes with different or same numbers at each position, c) enabling the heating pipes entering the evaporating tank to independently enter the evaporating tank through distributed arrangement, connecting the outside through a main pipe on one or more horizontal planes, and avoiding influencing the design of a lower spiral heat exchanger in the three modes.

7. A tangential counterflow spiral evaporator apparatus as in claim 1 wherein the evaporator body is constructed in a double layer configuration with a vacuum maintained to reduce heat loss.