CN217220193U

CN217220193U - External circulation evaporator

Info

Publication number: CN217220193U
Application number: CN202220911365.XU
Authority: CN
Inventors: 张东全; 杨爽
Original assignee: Anhui Huili Equipment Technology Co Ltd
Current assignee: Anhui Huili Equipment Technology Co Ltd
Priority date: 2022-04-19
Filing date: 2022-04-19
Publication date: 2022-08-19
Anticipated expiration: 2032-04-19

Abstract

The application discloses extrinsic cycle evaporimeter includes: the feed liquid is supplied the pipe, and the heater is connected to the output of feed liquid supply pipe, and the feed liquid gets into behind the heater through heating output to the evaporating chamber, the output port intercommunication evaporating chamber's of heater both sides to output port slope sets up, ensures that the feed liquid is inciding into in the evaporating chamber along tangential direction, increases the velocity of flow of feed liquid, and evaporation rate with higher speed. The bottom end of the evaporation chamber is communicated with a circulating pump for driving and accelerating evaporation, and the top end of the evaporation chamber is communicated with a vacuum pumping mechanism, so that the equipment runs in a vacuum environment, and gas in the evaporation chamber is also output from the top end. The bottom of the inside of the evaporation chamber is provided with a specific gravity detection device, and the output end of the circulating pump and the input end of the feed liquid feed pipe are provided with valves. The structure evaporation rate is fast, the feed liquid circulation rate is fast, can avoid the solution wall built-up to be detained.

Description

External circulation evaporator

Technical Field

The application relates to the technical field of evaporation device manufacturing, in particular to an external circulation evaporator.

Background

Traditional evaporimeter adopts the direct liquid evaporation to trades such as a small amount of liquid or the light chemical industry of laboratory chinese and western medicine of tubular outside natural circulation evaporimeter, and ubiquitous evaporation rate will let in a large amount of steam when slow, and continuous heating leads to the wall built-up serious, and evaporation rate is slow to the broken meeting scheduling problem of feed liquid composition. And because the structural limitation, the self-circulation speed is slow, because the solution circulation retention time is long, the effective components are destroyed, so that the solution in the heating pipe is always close to the concentration of the finished solution, the evaporation speed is slow, the energy consumption is high, and the problems of scaling, blockage, wall hanging and the like are easily caused when the solution viscosity is high.

Therefore, how to provide an evaporator with a fast evaporation rate and a fast circulation rate is a problem to be solved by those skilled in the art.

SUMMERY OF THE UTILITY MODEL

The application aims at providing an outer circulation evaporator with a faster evaporation rate and a fast feed liquid circulation speed.

To achieve the above object, the present application provides an external circulation evaporator comprising: the output end of the feed liquid feeding pipe is connected with a heater, the output ports of the heater are respectively connected to the two sides of the evaporation chamber, and the output ports are obliquely arranged; the bottom end of the evaporation chamber is connected with a circulating pump for driving evaporation, the top end of the evaporation chamber is communicated with a vacuum pumping mechanism, and the bottom end of the evaporation chamber is provided with a specific gravity detection device.

In some embodiments, the lower portion of the evaporation chamber is provided with a tapered surface, and the inner walls of both sides of the tapered surface are contracted toward the bottom end.

In some embodiments, the vacuum pumping mechanism comprises: a vacuum conveying pipe and a vacuum pump.

In some embodiments, a gas output mechanism for collecting vapor is disposed between the vacuum pumping mechanism and the evaporation chamber, and the gas output mechanism comprises: a condenser and a liquid collector;

the input end of the condenser is connected with the evaporation chamber, the output end of the condenser is connected with the liquid collector, and the output end of the liquid collector is connected with the vacuum air pumping mechanism.

In some embodiments, a gas-liquid separation device is arranged between the gas output mechanism and the evaporation chamber, and the gas-liquid separation device is used for distinguishing the recovered steam.

In some embodiments, the heater side is also communicated with a hot gas supply pipeline.

For above-mentioned background art, this application is provided with this application and discloses an extrinsic cycle evaporimeter, includes: the feed liquid is supplied the pipe, and the heater is connected to the output of feed liquid supply pipe, and the feed liquid gets into behind the heater through heating output to the evaporating chamber, the output port intercommunication evaporating chamber's of heater both sides to output port slope sets up, ensures that the feed liquid is inciding into in the evaporating chamber along tangential direction, increases the velocity of flow of feed liquid, and evaporation rate with higher speed. The bottom end of the evaporation chamber is communicated with a circulating pump for driving and accelerating evaporation, and the top end of the evaporation chamber is communicated with a vacuum pumping mechanism, so that the equipment runs in a vacuum environment, and gas in the evaporation chamber is output from the top end. The bottom in the evaporation chamber is provided with a specific gravity detection device, and the output end of the circulating pump and the input end of the feed liquid feed pipe are both provided with valves. The structure evaporation rate is fast, the feed liquid circulation rate is fast, can avoid solution wall built-up to be detained.

Drawings

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

Fig. 1 is a schematic connection diagram of an external circulation evaporator according to an embodiment of the present application.

Wherein:

1-a material liquid feeding pipe, 2-a heater, 21-a material liquid transmission pipe, 3-an evaporation chamber, 31-a specific gravity detection device, 32-a gas transmission pipe, 4-a circulating pump, 5-a vacuum transmission pipe, 6-a vacuum pump, 7-a condenser, 8-a liquid collector, 9-a gas-liquid separation device and 10-a steam supply pipeline.

Detailed Description

The technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only some embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

In order to enable those skilled in the art to better understand the scheme of the present application, the present application will be described in further detail with reference to the accompanying drawings and the detailed description.

Referring to the attached fig. 1, fig. 1 is a schematic connection diagram of an external circulation evaporator provided by an embodiment of the present application, and the external circulation evaporator comprises: feed liquid supply tube 1, heater 2 is connected to the output of above-mentioned feed liquid supply tube 1, and the feed liquid gets into heater 2 after through heating output to evaporating chamber 3, and the output port of heater 2 passes through feed liquid transmission pipe 21 intercommunication evaporating chamber 3's both sides to output port downward sloping sets up and is connected with evaporating chamber 3, ensures that the feed liquid jets into evaporating chamber 3 along tangential direction in, increases the velocity of flow of feed liquid, and makes the feed liquid form half vortex in the container, evaporation rate with higher speed. The bottom end of the evaporation chamber 3 is communicated with a circulating pump 4 for driving and accelerating evaporation, and the top end of the evaporation chamber 3 is communicated with a vacuum pumping mechanism, so that the equipment operates in a vacuum environment, and the gas in the evaporation chamber 3 is also output from the top end. The bottom end of the inside of the evaporation chamber 3 is provided with a specific gravity detection device 31, and the output end of the circulating pump 4 and the input end of the feed liquid feed pipe 1 are both provided with valves.

When the evaporator is used, the vacuum air exhaust mechanism is firstly opened to vacuumize the interior and then closed, so that the evaporator is ensured to operate in a vacuum state, and the evaporation rate and the accuracy of evaporation specific gravity detection are improved; then, a valve at the input end of the feed liquid supply pipe 1 is opened to introduce feed liquid into the heater 2, the feed liquid flows to a feed liquid transmission pipe 21 after being heated, and is injected into two sides of the evaporation chamber 3 in a tangential direction, evaporation is started, and the circulation pump 4 is used for assisting evaporation. Gas generated by the evaporation of the feed liquid rises and is discharged from a gas transmission pipe 32 at the top end, liquid concentrated by the feed liquid is remained at the bottom of the evaporation chamber 3, a specific gravity detection device 31 is started to detect the material specific gravity of the concentrated feed liquid in real time, the evaporation relative density is calculated, before a target value is not reached, a valve at the output end of the circulating pump 4 is kept closed, and the feed liquid feeding pipe 1 continuously inputs the feed liquid into the evaporation chamber 3. And (3) closing the valve of the feed liquid feed pipe 1 and opening the valve at the output end of the circulating pump 4 until the feed liquid is detected to be concentrated to the required concentration, and recovering to obtain the target concentrated feed liquid. This application additional helping hand circulation under vacuum state can realize simultaneously that the political law temperature is low and the fast characteristics of evaporation rate, can satisfy the low temperature vacuum concentration condition of some heat sensitive materials, and can not take place the material wall built-up and be detained.

Furthermore, the lower part of the evaporation chamber 3 is a conical surface, the two side walls of the conical surface shrink towards the bottom end, the feed liquid enters along the tangent line and forms a film on the inner wall, the feed liquid flows down by gravity, the evaporation surface area of the feed liquid forming the film is increased, the evaporation speed of the feed liquid is also increased, and the wall hanging is not easy to form. The degree of inclination of above-mentioned lateral wall can change according to actual need, in some embodiments, when 3 lateral walls of evaporating chamber and the cooperation of homonymy heater 2 output port set up, can guarantee that the feed liquid jets out along lateral wall tangential direction to guarantee the at utmost increase velocity of flow.

Further, the vacuum pumping mechanism includes: a vacuum conveying pipe 5 and a vacuum pump 6; the vacuum conveying pipe 5 is connected with the output end of the gas output pipe 21 and the vacuum pump 6; the operation of the vacuum pump 6 is used for carrying out air exhaust vacuum treatment on the evaporation chamber 3, so that the gas in the device originally can not influence the gas concentration in the evaporation process, the evaporation rate is increased, and gas influence factors are removed side by side. The use of the vacuum transfer tube 5 and vacuum pump 6 described above is referred to the prior art and will not be further described herein. And the specific structure of the vacuum pumping mechanism is not limited to the above, and will not be described in detail herein.

Further, a gas output mechanism is arranged between the vacuum pumping mechanism and the evaporation chamber 3, and the gas output mechanism comprises: a condenser 7 and a liquid collector 8; the input end of the condenser 7 is connected with a gas transmission pipe 21 at the top end of the evaporation chamber 3, and gas generated by evaporation is collected, condensed and then output to the liquid collector 8 for storage, so that condensed gas is ensured not to be returned to the inside of the evaporation chamber 3 to dilute the concentration of the feed liquid. The method of using the condenser 7 and the liquid collector 8 can refer to the prior art, and will not be described in detail herein. The specific structure of the gas output mechanism is not limited to the above, and the detailed description thereof is omitted

Further, a gas-liquid separation device 9 is connected in series between the gas output mechanism and the evaporation chamber 3, the gas-liquid separation device 9 is arranged on a pipeline of the gas transmission pipe 21, and can break foam of material liquid mixed in the evaporation gas, so that the material liquid returns to the evaporation chamber 3 after being broken, water vapor in the evaporation gas is distinguished and recovered, and the material vapor returns to the evaporation chamber 3 again to accelerate evaporation rate.

Further, the side surface of the heater 2 is also communicated with a hot gas supply pipeline 10, and the hot gas supply pipeline 10 inputs high-temperature hot gas into the device shell to provide heat for heating the feed liquid and evaporating the feed liquid; high-temperature hot gas is input through a shell pass, and is different from liquid pipeline input, so that the evaporation rate is prevented from being influenced by mixing of the high-temperature hot gas into diluent liquid, the shell pass is not shown in the figure, the structure of the shell pass can refer to the prior art, and the shell pass structure is not taken as the design focus of the text and is not described again.

It is noted that, in this specification, relational terms such as first and second, and the like are used solely to distinguish one entity from another entity without necessarily requiring or implying any actual such relationship or order between such entities.

The external circulation evaporator provided by the present application is described in detail above. The principles and embodiments of the present application are explained herein using specific examples, which are provided only to help understand the method and the core idea of the present application. It should be noted that, for those skilled in the art, without departing from the principle of the present application, the present application can also make several improvements and modifications, and those improvements and modifications also fall into the protection scope of the claims of the present application.

Claims

1. An external circulation evaporator, comprising: the device comprises a feed liquid feeding pipe (1), wherein the output end of the feed liquid feeding pipe (1) is connected with a heater (2), the output ports of the heater (2) are respectively connected to two sides of an evaporation chamber (3), and the output ports are obliquely arranged; the bottom of evaporating chamber (3) is connected with circulating pump (4) that is used for driving the evaporation, the top intercommunication of evaporating chamber (3) has the vacuum pumping mechanism, the bottom of evaporating chamber (3) is provided with proportion detection device (31).

2. An evaporator according to claim 1 in which the lower part of the chamber (3) is a conical surface, the inner walls of the sides of which converge towards the bottom.

3. The external circulation evaporator according to claim 2, wherein the vacuum pumping mechanism comprises: a vacuum conveying pipe (5) and a vacuum pump (6).

4. An external circulation evaporator according to claim 3, characterized in that a gas output mechanism for collecting vapor is arranged between the vacuum suction mechanism and the evaporation chamber (3), and comprises: a condenser (7) and a liquid collector (8);

the input of condenser (7) is connected evaporation chamber (3), the output of condenser (7) is connected liquid trap (8), the output of liquid trap (8) is connected vacuum pumping mechanism.

5. The external circulation evaporator according to claim 4, characterized in that a gas-liquid separation device (9) is arranged between the gas output mechanism and the evaporation chamber (3), and the gas-liquid separation device (9) is used for distinguishing recovery steam.

6. An external circulation evaporator according to any one of claims 1-5, characterized in that the heater (2) is further connected with a hot gas supply line (10) at the side.