CN111685178A - Fluid heat treatment device and fluid heat treatment method - Google Patents
Fluid heat treatment device and fluid heat treatment method Download PDFInfo
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- CN111685178A CN111685178A CN202010516742.5A CN202010516742A CN111685178A CN 111685178 A CN111685178 A CN 111685178A CN 202010516742 A CN202010516742 A CN 202010516742A CN 111685178 A CN111685178 A CN 111685178A
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- A23C3/00—Preservation of milk or milk preparations
- A23C3/02—Preservation of milk or milk preparations by heating
- A23C3/03—Preservation of milk or milk preparations by heating the materials being loose unpacked
- A23C3/033—Preservation of milk or milk preparations by heating the materials being loose unpacked and progressively transported through the apparatus
- A23C3/037—Preservation of milk or milk preparations by heating the materials being loose unpacked and progressively transported through the apparatus in direct contact with the heating medium, e.g. steam
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Abstract
The invention relates to the technical field of fluid heat treatment, and provides a fluid heat treatment device and a fluid heat treatment method, wherein the device comprises a pressure adjusting structure, a heat exchange unit and a steam conveying pipeline; the pressure adjusting structure with the heat transfer unit passes through the connecting pipe intercommunication, install first governing valve on the connecting pipe, steam conveying pipeline with the heat transfer unit intercommunication, the last second governing valve that installs of steam conveying pipeline, install the state monitoring device in the heat transfer unit, the state monitoring device the pressure adjusting structure first governing valve with the second governing valve is connected with the micro-control spare electricity respectively. The method comprises the steps of introducing steam into a heat exchange unit, adjusting the pressure in the heat exchange unit until the temperature of the steam in the heat exchange unit reaches a preset value, and carrying out heat exchange treatment on fluid to be treated and the steam reaching the preset value state in the heat exchange unit. The heat treatment process of the invention is stable and easy to regulate and control, and the treatment efficiency is high.
Description
Technical Field
The invention relates to the technical field of fluid heat treatment, in particular to a fluid heat treatment device and a fluid heat treatment method.
Background
Pasteurization is a treatment method in which a raw material to be treated is heated to a certain temperature (usually 60 to 82 ℃), and is rapidly cooled after the temperature is maintained for a certain period of time. For example, the material to be treated may be maintained in an environment at 72 ℃ for a period of 15 seconds, the sterilization process being capable of killing pathogenic bacteria as well as most non-pathogenic bacteria in the material to be treated.
At present, pasteurization technology mainly adopts two modes, one mode is low-temperature long-time treatment, and the other mode is high-temperature short-time treatment. For the method of low-temperature long-time treatment, taking a sterilization mode of milk as an example, the milk can be heated to 62-65 ℃ and kept at the temperature for 30min, the treatment mode can kill various growth-type pathogenic bacteria in the milk, and the sterilization efficiency can reach 99.9%. However, this treatment method is not effective in killing thermotolerant bacteria, and the treatment efficiency is low in the batch treatment process.
Compared with a low-temperature long-time treatment mode, the high-temperature short-time treatment method can be used for continuous operation and has higher treatment efficiency. However, in some practical cases of the technology, the phenomenon of local overheating and coking caused by uneven heating of the material liquid occurs, and in other practical cases, the difference between the heat exchange source and the material processing temperature is large, and the sterilization temperature control precision is poor due to large temperature fluctuation, which also affects the quality of products, especially heat-sensitive materials.
In the prior art, plate heat exchangers or tube heat exchangers and the like mainly used by a heat exchange device for fluid materials have the problems of low heat exchange efficiency and long heating time; in addition, in the heating process of the heat-sensitive material and the easily oxidized material, the problems of product quality deterioration, damage to effective components of the product and the like are easily caused.
Disclosure of Invention
The invention provides a fluid heat treatment device and a fluid heat treatment method, and aims to solve the technical problems that in the prior art, the fluid heat treatment temperature fluctuation is large, the treatment temperature control accuracy is not high, local overheating is easy to occur, and the treatment efficiency is low.
According to a first aspect of the present invention, there is provided a fluid heat treatment apparatus comprising a pressure regulating structure, a heat exchange unit and a vapor delivery conduit; the pressure adjusting structure with the heat transfer unit passes through the connecting pipe intercommunication, install first governing valve on the connecting pipe, steam conveying pipeline with the heat transfer unit intercommunication, the last second governing valve that installs of steam conveying pipeline, install the state monitoring device in the heat transfer unit, the state monitoring device the pressure adjusting structure first governing valve with the second governing valve is connected with the micro-control spare electricity respectively.
Further, the fluid heat treatment device further comprises a fluid containing unit and a dehydration unit, the bottom of the heat exchange unit is communicated with the fluid containing unit, the fluid containing unit is communicated with the dehydration unit through a material conveying pipeline, a third regulating valve is installed on the material conveying pipeline, a liquid level detection device is installed in the fluid containing unit, and the third regulating valve and the liquid level detection device are respectively electrically connected with the micro-control device.
Furthermore, the heat exchange unit is communicated with a material conveying pipeline, a fourth adjusting valve and a flow monitoring device are installed on the material conveying pipeline, and the fourth adjusting valve and the flow monitoring device are respectively electrically connected with the micro-control device.
Furthermore, the fluid heat treatment device further comprises a fluid dispersion structure, wherein the fluid dispersion structure comprises a dispersion part with a hollow inner cavity, the dispersion part is positioned in the heat exchange unit, the bottom of the dispersion part is provided with a plurality of spray holes, any spray hole is communicated with the hollow inner cavity, and the fluid to be treated enters the heat exchange unit through the spray holes.
Furthermore, the aperture of the spray hole is 0.8-2 mm.
Further, the distance between any two adjacent spray holes is 40-60 mm.
Further, the steam delivery pipe is provided with a plurality of pipes, and the plurality of pipes are distributed around the periphery of the fluid dispersion structure.
According to a second aspect of the present invention, a fluid heat treatment method is provided, in which steam is introduced into a heat exchange unit, the pressure in the heat exchange unit is adjusted until the temperature of the steam in the heat exchange unit reaches a preset value, a fluid to be treated is delivered into the heat exchange unit, and the fluid to be treated and the steam reaching the preset value are subjected to heat exchange treatment in the heat exchange unit.
Further, the initial temperature of the steam introduced into the heat exchange unit is T1The temperature of the fluid to be treated after heat exchange with the steam is T2，T1-T2<20。
Furthermore, the bottom of the heat exchange unit is communicated with a fluid containing unit, a heating fluid obtained after heat exchange between the fluid to be treated and the steam enters the fluid containing unit, and the retention time of the heating fluid in the fluid containing unit is 1-120 s.
The fluid heat treatment device and the fluid heat treatment method provided by the invention have the following beneficial effects:
the pressure adjusting structure and the steam conveying pipeline are respectively communicated with the heat exchange unit, the vacuum degree or the pressure in the heat exchange unit can be adjusted and controlled in real time by adjusting and controlling the corresponding adjusting valve and the pressure adjusting structure, the pressure and/or the temperature of the heat exchange unit are more stable, the influence of overlarge pressure change on the stability of the steam temperature in the heat exchange unit is avoided, when the fluid to be treated is contacted with the steam, the heat exchange efficiency is higher, the effect is better, the problem of local temperature overheating when the fluid to be treated is contacted with the steam can be avoided, and the sterilization effect and the product quality can be effectively improved; in addition, when the heat-sensitive material is processed, the loss of effective components in the heat-sensitive material can be effectively reduced under stable and accurate temperature control conditions.
The third regulating valve is arranged on a material conveying pipeline communicated with the heat exchange unit and the dehydration unit and linked with the liquid level detection device for acquiring liquid level data in the fluid containing unit, so that the stay time of the fluid to be treated in the fluid containing unit can be conveniently regulated and controlled, the contact time of the fluid to be treated and steam can be regulated and controlled, the heat treatment time of the fluid to be treated and the heating fluid obtained by heat exchange of the steam can be regulated and controlled, and the operation efficiency can be improved.
The fourth regulating valve and the flow monitoring device are arranged on the material conveying pipeline for conveying the fluid to be treated in the heat exchange unit, so that the flow of the fluid to be treated entering the heat exchange unit can be regulated and controlled conveniently, and the regulation and control effect of the steam pressure in the heat exchange unit can be further improved.
The fluid dispersing structure adopts a structure of a plurality of spray holes, the inner diameter of the spray holes and the distance between the spray holes are arranged, fluid to be treated entering the heat exchange unit can be dispersed into a plurality of strands of fluid, the contact efficiency of the fluid to be treated and steam can be remarkably increased, the steam is rapidly condensed on the surface of the fluid, latent heat is released to heat the fluid, and the heating time of the fluid can be greatly shortened. The plurality of steam conveying pipelines are arranged around the fluid dispersing structure, so that the contact efficiency of the fluid and the steam can be further improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a fluid heat treatment apparatus according to an embodiment of the present invention.
In the figure, 1-a steam generating device, 2-a heat exchange unit, 3-a vacuum processing device, 4-a dehydration unit, 5-a state monitoring device, 6-a material conveying pipeline, 7-a fourth regulating valve, 8-a steam conveying pipeline, 9-a second regulating valve, 10-a connecting pipe, 11-a first regulating valve, 12-a material conveying pipeline, 13-a third regulating valve, 14-a liquid level detecting device, 15-an emptying pipe, 16-an emptying valve and 17-a fluid containing unit.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. 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 invention.
Referring to fig. 1, an embodiment of the present invention provides a fluid heat treatment apparatus, including a pressure regulating structure, a heat exchange unit 2 and a steam delivery pipe 8; the pressure regulating structure is communicated with the heat exchange unit 2 through a connecting pipe 10, a first regulating valve 11 is installed on the connecting pipe 10, the steam conveying pipeline 8 is communicated with the heat exchange unit 2, a second regulating valve 9 is installed on the steam conveying pipeline 8, a state monitoring device 5 is installed in the heat exchange unit 2, and the state monitoring device 5, the pressure regulating structure, the first regulating valve 11 and the second regulating valve 9 are respectively electrically connected with the micro-control device.
The heat exchange unit 2 may include a heat exchange cylinder, and the structure of the cylinder may not be particularly limited. For example, the middle of the cylinder is generally a cylindrical structure, which is generally vertically disposed, i.e., the axis of the cylindrical structure is in a vertical direction. The upper and/or lower portion of the cylinder may be a cylinder or frustum structure having a smaller diameter than the middle cylinder. The cylinder is hollow, and the fluid to be treated is input into the cylinder and is subjected to heat treatment in the cylinder. It will be understood that heat exchange unit 2 also includes feed ports, discharge ports and other conventional necessary structures.
One end of the steam delivery pipe 8 can be communicated with the steam generating device 1, and the other end thereof is communicated with the heat exchange unit 2, and is used for delivering clean steam with a certain temperature into the heat exchange unit 2. A second regulating valve 9 is arranged on the steam conveying pipeline 8; the opening of the second adjusting valve 9 is adjusted, and the amount of steam conveyed in the pipeline can be adjusted. The position where the steam delivery pipe 8 is connected to the heat exchange unit 2 is usually located at the top or upper part of the heat exchange unit 2, and the specific position thereof can be adaptively adjusted according to actual needs.
The pressure regulating structure is used for regulating and controlling the pressure inside the heat exchange unit 2 or the vacuum degree of the heat exchange unit. The pressure regulating structure is communicated with the heat exchange unit 2 through a connecting pipe 10, and a first regulating valve 11 is installed on the connecting pipe 10. Specifically, the pressure regulating structure may be a vacuum processing device 3, such as a vacuum pump; the vacuum processing device 3 is electrically connected to the micro-controller. Or, the pressure regulating structure comprises an emptying pipe 15 and an emptying valve 16, one end of the emptying pipe 15 is communicated with the connecting pipe 10, the other end of the emptying pipe is directly communicated with the atmosphere or other empty containers, the emptying valve 16 is arranged on the emptying pipe 15, and the emptying valve 16 is also electrically connected with the micro-control element. Or one end of the connecting pipe 10 is communicated with the heat exchange unit 2, the other end is respectively communicated with the vacuum treatment device 3 and the emptying pipe 15, and the emptying valve 16 is arranged on the emptying pipe 15.
When a heat-sensitive fluid or other fluid to be heat-treated at a relatively low temperature is to be treated, for example, the preset air pressure value in the heat exchange unit 2 is less than or equal to 1 standard atmosphere (absolute pressure), and the actual pressure in the heat exchange unit 2 is relatively high (still less than or equal to 1 standard atmosphere, but higher than the preset air pressure value), the evacuation valve 16 may be closed, clean steam may be introduced into the heat exchange unit 2, and the vacuum treatment device 3 and the first regulating valve 11 may be opened until the pressure in the heat exchange unit 2 reaches a preset state.
When a fluid requiring a relatively high temperature for heat treatment is treated, for example, the preset air pressure value in the heat exchange unit 2 is greater than 1 standard atmospheric pressure (absolute pressure), and the air pressure in the heat exchange unit 2 is higher than the preset air pressure value, the vacuum treatment device 3 is put in a non-operation state; at the same time, the first regulating valve 11 and the evacuation valve 16 are opened. After the first regulating valve 11 and the evacuation valve 16 are opened, the heat exchange unit 2 directly releases pressure outwards through the evacuation pipe 15 until the air pressure in the heat exchange unit 2 reaches a preset state.
When the pressure in the heat exchange unit 2 needs to be less than or equal to 1 standard atmospheric pressure, the flow rate of conveying steam into the heat exchange unit 2 can be regulated and controlled by the vacuum degree in the heat exchange unit 2, and a corresponding pumping structure can also be correspondingly arranged on the steam conveying pipeline 8, and the flow rate of conveying steam into the heat exchange unit 2 can be regulated and controlled by the corresponding pumping structure; when the pressure in the heat exchange unit 2 needs to be higher than 1 standard atmospheric pressure, the flow rate of the steam conveyed into the heat exchange unit 2 can be regulated and controlled by a corresponding pumping structure.
The following description will be made by taking a pressure adjusting structure as an example of the structure of the vacuum processing device 3. When the pressure regulating structure is started and the first regulating valve 11 is opened, the vacuum degree in the heat exchange unit 2 can be regulated and controlled; when the vacuum degree in the heat exchange unit 2 is adjusted to a preset value, the pressure adjusting structure and the first adjusting valve 11 can be closed. The preset value may be a specific value or a range of values.
The condition monitoring device 5 may be installed in the heat exchange unit 2 or on the connection pipe 10, as long as the detection element of the condition monitoring device 5 can obtain the pressure and/or temperature in the heat exchange unit 2 or the connection pipe 10 in real time. The condition monitoring device 5 may be a pressure monitoring device and/or a temperature monitoring device, or other devices capable of facilitating obtaining the pressure and/or temperature inside the heat exchange unit 2 or the connection pipe 10. For example, the condition monitoring device 5 may be a thermometer, and provided one each on the heat exchange unit 2 and the connection pipe 10; because the temperature on the connecting pipe 10 may be different from the temperature inside the heat exchange unit 2, the preset values of the steam temperatures at the two positions may be the same or different, so long as the temperature of the steam inside the heat exchange unit 2 is conveniently obtained so as to conveniently control the operation of mechanisms such as a pressure adjusting structure and the like.
The first regulating valve 11, the second regulating valve 9 and the state monitoring device 5 are respectively electrically connected with the micro-control device, and the opening and closing or the opening degree of the first regulating valve 11 and/or the second regulating valve 9 can be adaptively controlled according to the information of the state monitoring device 5. First and second regulator valves 11, 9 may be solenoid valves or other valve structures that facilitate automatic control of opening and/or closing. The micro-controller can be a conventional programmable device at present.
Before the fluid to be treated is conveyed into the heat exchange unit 2, the heat exchange unit 2 can be in a closed state, then the pressure regulating structure and the first regulating valve 11 are opened, the second regulating valve 9 on the steam conveying pipeline 8 is opened, and clean steam is conveyed into the heat exchange unit 2. Through the vacuumizing treatment of the pressure adjusting structure on the heat exchange unit 2 and the regulation and control of the flow rate of the clean steam conveyed into the heat exchange unit 2, the vacuum degree in the heat exchange unit 2 can be kept within an allowable fluctuation range, and therefore the temperature of the steam input into the heat exchange unit 2 is kept within a preset range. For example, the temperature of the steam in the heat exchange unit 2 can be kept within the range of 90-100 ℃; when the steam temperature exceeds a preset value, the steam conveying amount is increased or decreased in the heat exchange unit 2 and/or the starting and stopping state of the vacuum treatment device is adjusted.
And after the vacuum degree or the temperature of the steam in the heat exchange unit 2 is regulated to a preset value, conveying the fluid to be treated into the heat exchange unit 2. The fluid to be treated is contacted with the steam in the heat exchange unit 2, and the steam is condensed on the surface of the fluid to be treated to release latent heat, so that the heat treatment of the fluid to be treated is realized. The treated fluid exits heat exchange unit 2. In the fluid heat treatment process, the opening and closing or opening degree of the first regulating valve 11 and/or the second regulating valve can be regulated and controlled in real time according to actual conditions or specific set conditions, so that the vacuum degree or the steam temperature in the heat exchange unit 2 is kept at an allowable or preset value or range, the fluid heat treatment process is more stable, and the heat treatment effect is improved. Moreover, by adopting the structure, the heating time of the fluid to be treated can be effectively shortened, the heat exchange time of the fluid to be treated and the fluid to be treated can be shortened to 0.1s, and the heat exchange efficiency can be effectively improved.
Wherein, still can open pressure regulation structure and first governing valve 11 earlier before carrying steam in to heat transfer unit 2, carry out evacuation preliminary treatment to heat transfer unit 2 earlier, can improve the discharge efficiency of non-condensable gas in heat transfer unit 2, reach the purpose of adjusting the interior vacuum degree of heat transfer unit 2 simultaneously.
By adopting the device, the heat treatment condition is easier to regulate and control, the treatment process is more stable, the temperature of the steam in the heat exchange unit 2 can be stably controlled within a preset range, the treatment effect can be effectively improved, the sterilization effect on fluid is improved, and the integral quality of a fluid product cannot be influenced due to large fluctuation of operation factors; in addition, in the heat treatment process, the influence of overhigh steam temperature on the fluid property can be avoided, and the adverse effect on the product quality can be reduced or avoided; the temperature difference between the fluid to be treated and the steam in the heat exchange unit 2 is relatively small, so that the influence of local overheating of the fluid on the treatment effect can be avoided. The device not only can be used for fluid sterilization, but also can be widely applied to other heat exchange processes in the fluid processing process.
On the basis of the above embodiments, the present embodiment provides a fluid heat treatment apparatus, the fluid heat treatment apparatus further includes a fluid containing unit 17 and a dehydration unit 4, the bottom of the heat exchange unit 2 is communicated with the fluid containing unit 17, the fluid containing unit 17 is communicated with the dehydration unit 4 through a material conveying pipeline 12, a third regulating valve 13 is installed on the material conveying pipeline 12, a liquid level detection device 14 is installed in the heat exchange unit 2, and the third regulating valve 13 and the liquid level detection device 14 are respectively electrically connected with a micro-controller.
The fluid containing unit 17 may be a pipe or other structure capable of containing fluid, and the material thereof is not particularly limited as long as it can normally work in a corresponding working environment. A discharge port may be formed at a lower portion of the cylinder of the heat exchange unit 2, and an upper end of the fluid housing unit 17 is communicated with the discharge port to achieve communication between the fluid housing unit 17 and the heat exchange unit 2. The bottom or the side near the bottom of the fluid containing unit 17 is communicated with one end of the material conveying pipeline 12, and the other end of the material conveying pipeline 12 is communicated with the dewatering unit 4.
The fluid after heat treatment in the heat exchange unit 2 is transported to the dehydration unit 4 for dehydration treatment through the fluid containing unit 17 and the material transporting pipeline 12. As one of specific implementations, the dehydration unit 4 may include a vacuum dehydration device, a vacuum pump, and a centrifugal pump; the material conveying pipeline 12 is communicated with a vacuum dehydration device, a vacuum pump and a centrifugal pump are respectively communicated with the vacuum dehydration device, fluid dehydrated in the vacuum dehydration device to meet the requirement is discharged out of the vacuum dehydration device through the bottom of the vacuum dehydration device and is pumped to a storage container or other devices through the centrifugal pump.
A third regulating valve 13 is arranged on the material conveying pipeline 12; the fluid containing unit 17 can be internally provided with a liquid level detection device 14, the liquid level detection device 14 is also electrically connected with the micro-control part, so that the opening degree of the third regulating valve 13 can be conveniently and timely regulated according to the amount of fluid in the fluid containing unit 17, and the retention time of the fluid in the fluid containing unit 17 can be further regulated, thereby regulating and controlling the contact time of the fluid and steam in the heat exchange unit 2, and regulating and controlling the heat treatment effect of the fluid. According to the conditions of different types of the fluid to be treated, different heat sensitivity, different treatment efficiency or different quality requirements and the like, the contact time of the fluid to be treated and steam is properly regulated and controlled, so that the heat treatment efficiency and the product quality can be improved, and for example, the sterilization effect can be improved. The liquid level detector 14 may be a magnetic levitation level gauge, an ultrasonic level gauge or a capacitance level gauge, preferably a capacitance level gauge.
On the basis of the above embodiments, this embodiment provides a fluid heat treatment apparatus, the heat exchange unit 2 is communicated with the material conveying pipeline 6, the material conveying pipeline 6 is provided with the fourth regulating valve 7 and the flow monitoring device, and the fourth regulating valve 7 and the flow monitoring device are respectively electrically connected with the micro-control device.
The material conveying pipeline 6 is used for conveying the fluid to be treated into the heat exchange unit 2. The location where the material transfer pipe 6 is connected to the heat exchange unit 2 is typically at the top or upper part of the cylinder of the heat exchange unit 2. And a fourth regulating valve 7 and a flow monitoring device are respectively arranged on the material conveying pipeline 6, so that the conveying state of the fluid to be treated can be conveniently regulated and controlled in real time. When the pressure of the heat exchange unit 2 is adjusted, the steam volume entering the heat exchange unit 2, the flow of the fluid to be treated and/or the vacuumizing treatment can be adjusted, the pressure and/or the temperature in the heat exchange unit 2 can be stably controlled more efficiently, the adjustment and control mode can be adopted, the adjustment and control flexibility can be increased, the rapid adjustment and control can be realized, and the problem that the accuracy of the adjustment and control is influenced due to the fact that the single operation condition is changed too much can be avoided.
On the basis of the foregoing embodiments, the present embodiment provides a fluid heat treatment apparatus, further comprising a fluid dispersing structure, wherein the fluid dispersing structure includes a dispersing portion having a hollow inner cavity, the dispersing portion is located in the heat exchange unit, and a plurality of nozzles are disposed at the bottom of the dispersing portion, any nozzle is communicated with the hollow inner cavity, and the fluid to be treated enters the heat exchange unit 2 through the nozzle. The material of the fluid dispersing structure is not particularly limited, as long as the fluid dispersing structure is convenient for fluid transportation and can work normally in a corresponding working environment.
The fluid dispersing structure further includes a communicating portion that communicates with the dispersing portion. The communicating part can be a straight pipe, a bent pipe or other tubular structures, and the communicating part can be directly communicated with the material conveying pipeline 6 or other pipelines so that the fluid to be treated can enter the dispersing part through the communicating part. The dispersion part can be a structure with a regular or irregular hollow inner cavity, and the bottom of the dispersion part can be a structure with a flat plate shape, a cambered surface or other regular/irregular structures; the bottom of the dispersing section is generally a flat plate-like structure, and the axis of the cylinder of the heat exchange unit 2 is perpendicular to the flat plate-like structure.
The flat structure is provided with a plurality of spray holes, any spray hole is communicated with the hollow inner cavity of the dispersion part, and the axis of any spray hole is preferably parallel to the axis of the cylinder; it will be appreciated that the axis of the orifice may also have an inclination with respect to the axis of the barrel. The fluid to be treated entering the hollow inner cavity of the dispersion part enters the heat exchange unit 2 through the spray holes and directly contacts with the steam dispersed in the heat exchange unit 2 to carry out heat exchange treatment.
A fluid dispersion structure with a plurality of spray holes is adopted, so that the fluid to be treated enters the heat exchange unit 2 from different channels at the same time; fluid enters the heat exchange unit 2 through the spray holes, so that the fluid to be treated can be more fully contacted with steam in the heat exchange unit 2 after entering the heat exchange unit 2, the contact efficiency between the steam and the fluid to be treated divided into a plurality of strands of fluid is remarkably improved, the steam is rapidly condensed on the surface of each strand of fluid, the heating time of the fluid can be greatly shortened, and the heat exchange efficiency is improved. Specifically, the distance between any two adjacent spray holes is 40-60 mm; the aperture of any spray hole is 0.8-2 mm. The aperture of the spray holes and the distance between the spray holes are reasonably arranged, so that the contact efficiency between the fluid to be treated and the steam can be further improved.
On the basis of the above embodiments, the present embodiment provides a fluid heat treatment apparatus, wherein a plurality of vapor transmission pipes 8 are provided, and a plurality of vapor transmission pipes 8 are distributed around the periphery of the fluid distribution structure.
The positions where the plurality of steam delivery pipes 8 are connected to the heat exchange unit 2 may be distributed around the circumference of the bottom of the dispersion part. Wherein, the outlet position of the steam in the steam conveying pipeline 8 and the bottom of the dispersion part can be positioned at the same height or different heights. The initial flow direction of the steam entering the heat exchange unit 2 and the axis of the cylinder of the heat exchange unit 2 may have a certain inclination angle, or may be parallel to each other, and preferably, they are parallel to each other, that is, at least a part of the pipe sections of the steam delivery pipe 8 is parallel to the axis of the cylinder, and the part of the pipe sections is communicated with the cylinder of the heat exchange unit 2. Fluid to be treated enters into heat exchange unit 2 through dispersion portion, and steam enters into heat exchange unit 2 from steam conveying pipe 8, and the initial flow state of steam that enters into heat exchange unit 2 can not influence the flow of fluid to be treated, and simultaneously, steam enters into heat exchange unit 2 with the mode that encircles fluid to be treated, can further improve the contact efficiency and the effect of fluid and steam.
A fluid heat treatment method comprises the steps of introducing steam into a heat exchange unit 2, adjusting the pressure in the heat exchange unit 2 until the temperature of the steam in the heat exchange unit 2 reaches a preset value, conveying fluid to be treated into the heat exchange unit 2, and carrying out heat exchange treatment on the fluid to be treated and the steam reaching the preset value state in the heat exchange unit 2.
The following description will be made by taking as an example a processing method in which the pressure regulating structure is the vacuum processing device 3 and the pressure inside the heat exchange unit 2 is less than 1 standard atmospheric pressure (absolute pressure). Before the fluid to be treated is conveyed into the heat exchange unit 2, clean steam is input into the heat exchange unit 2, the pressure adjusting structure is started, the first adjusting valve 11 is opened, the heat exchange unit 2 is vacuumized until the air pressure in the heat exchange unit 2 reaches a preset numerical value or a preset numerical value range, and the vacuum treatment device and the first adjusting valve 11 are closed. At this time, the temperature of the steam in the heat exchange unit 2 reaches a preset value, and the fluid to be treated starts to be input into the heat exchange unit 2. Wherein, before carrying steam in heat transfer unit 2, still can open pressure regulation structure and first governing valve 11 earlier, carry out evacuation preliminary treatment to heat transfer unit 2 earlier, can improve the discharge efficiency of non-condensable gas in heat transfer unit 2.
The fluid to be treated and the steam reaching the preset value state are mutually contacted in the heat exchange unit 2, the steam with relatively high temperature releases latent heat on the surface of the fluid to be treated, so that the temperature of the fluid to be treated is raised, and the fluid to be treated is subjected to heat treatment. The preset value of the steam temperature may be a specific value or a range of values.
It can be understood that, during the heat treatment process, the air pressure in the heat exchange unit 2 will change with the factors such as the addition of the fluid to be treated and the retention time of the fluid entering the heat exchange unit 2 in the fluid containing unit 17 communicated with the bottom of the heat exchange unit 2. Therefore, after the fluid to be treated is input into the heat exchange unit 2, the flow of clean steam can be conveyed by the adjusting steam conveying pipeline 8, the flow of the fluid to be treated entering the heat exchange unit 2 is adjusted, and/or the start-stop state of the pressure adjusting structure is adjusted, the pressure state in the heat exchange unit 2 is adjusted in real time, the stability of the air pressure and the steam temperature in the heat exchange unit 2 can be kept, the steam temperature in the heat exchange unit 2 is always kept at a preset value in the heat treatment process of the fluid to be treated, the steam and the fluid to be treated are subjected to heat exchange treatment in a stable preset state all the time, and the heat treatment effect can be improved.
Before the fluid to be treated is conveyed to the heat exchange unit 2, the fluid to be treated can be subjected to heat exchange or heating treatment, so that the temperature of the fluid to be treated is properly increased, and the heat treatment effect is prevented from being influenced by overlarge temperature difference between the fluid to be treated and steam in the heat exchange unit 2. The temperature of the fluid to be treated entering the heat exchange unit 2 is 0-70 ℃; preferably 40 to 70 ℃, and more preferably 55 to 65 ℃.
The initial temperature of the steam input into the heat exchange unit, namely the temperature of the steam in the cavity after entering the heat exchange unit is controlled and adjusted, wherein the temperature is T1. The steam entering the heat exchange unit 2 exchanges heat with the fluid to be treated, and the temperature of the heated fluid obtained after heat exchange is T2。
The temperature difference between the initial temperature of the steam and the temperature of the heating fluid is kept in a smaller range, the temperature difference between the initial temperature of the steam and the heated heating fluid is reduced, the temperature control during the fluid heat treatment is more accurate, the stability of the treatment condition is more facilitated, and the heat treatment effect is improved. Wherein, T1-T2<20 ℃ and preferably 0<T1-T2<15℃，More preferably 0 < T1-T2≤10℃。
Wherein the initial temperature range of the steam is 80-160 ℃, preferably 90-150 ℃, and further preferably 95-130 ℃. Specifically, when the absolute air pressure in the heat exchange unit 2 is equal to or lower than the processing condition of 1 atmosphere, the initial temperature range of the steam is 80 to 100 ℃, and preferably 90 to 100 ℃; when the absolute pressure in the heat exchange unit 2 is higher than the processing condition of 1 atmospheric pressure, the initial temperature range of the steam is 100 to 160 ℃, preferably 100 to 150 ℃, and more preferably 120 to 135 ℃.
The temperature range of the heating fluid obtained after the fluid to be treated enters the heat exchange unit 2 and exchanges heat with steam is 75-155 ℃, preferably 86-145 ℃, and further preferably 90-125 ℃.
The fluid to be treated enters the fluid containing unit 17 from the bottom of the heat exchange unit 2 through the heated fluid obtained by heat exchange between the fluid to be treated and the steam in the heat exchange unit 2, and the residence time of the heated fluid in the fluid containing unit 17 can be regulated and controlled through linkage control of the third regulating valve and the liquid level detection device, wherein the residence time is 1-120 s, preferably 2-60 s, and further preferably 5-15 s.
The treated heated fluid is conveyed to a vacuum dehydration device of the dehydration unit 4 through a conveying pipeline 12, dehydrated in the vacuum dehydration device and then discharged. And (3) cooling the heated fluid to 55-70 ℃ in the dehydration process in the vacuum dehydration device, and preferably 60-65 ℃.
DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION
The following examples are given to further illustrate the embodiments of the present invention. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
Examples 1, 2, 3, and 4 are based on an ARA (arachidonic acid triglyceride) emulsion in which whey protein is used as an emulsifier as a sterilization target, and coliform bacteria and bacillus subtilis are added to the emulsion as indicator bacteria, and sterilization is performed under different sterilization intensity conditions, and the effect of different sterilization intensity on the product is evaluated by evaluating the sterilization effect of the indicator bacteria, the denaturation rate of whey protein (total β -lactoglobulin), and the retention rate of the target ARA as indicators.
Example 1
Step 1: the vacuum treatment device and the first regulating valve 11 are opened, and the non-condensable air in the heat exchange unit 2 is extracted. The state monitoring device 5 is a thermometer, the heat exchange unit 2 and the connecting pipe 10 are respectively provided with one temperature sensor, the preset steam temperature value at the heat exchange unit 2 is 90 ℃, and the preset steam temperature value at the connecting pipe 10 is 88 ℃. 1bar (absolute pressure) of clean steam is introduced into the heat exchange unit 2 through the steam conveying pipeline 8, and the speed of the clean steam entering the heat exchange unit 2 is controlled by the vacuum degree inside the heat exchange unit 2 (the vacuum degree is set to be-30 kPa, and the temperature of the steam is 90 ℃). When the temperature of the connecting pipe 10 exceeds 88 ℃, the pressure regulating structure and the first regulating valve 11 are closed, and the vacuum degree in the heat exchange unit reaches-30 KPa, the temperature of steam in the cavity is 90 ℃; injecting the ARA emulsion into the heat exchange unit 2 at the temperature of 60 ℃ through a fluid dispersion structure at the flow rate of 300L/h, condensing steam on the surface of the ARA emulsion to release latent heat, and rapidly heating the ARA emulsion to 75-85 ℃; in the process, the steam temperature in the heat exchange unit 2 is regulated and controlled to be stable by regulating and controlling the starting, stopping and/or opening conditions of the vacuum treatment device, the first regulating valve, the second regulating valve and the fourth regulating valve;
step 2: the ARA emulsion falls into the bottom of the heat exchange unit 2 after being heated, and the heated fluid is controlled to stay in the fluid containing unit 17 for 60s through the linkage of a third regulating valve 13 and a liquid level detection device 14;
and step 3: the ARA emulsion treated in the heat exchange unit 2 enters the dehydration unit 4 to rapidly remove water, and the temperature of the ARA emulsion is reduced to 60-65 ℃.
Example 2
Step 1: the vacuum treatment device and the first regulating valve 11 are opened, and the non-condensable air in the heat exchange unit 2 is extracted. The state monitoring device 5 is a thermometer, the heat exchange unit 2 and the connecting pipe 10 are respectively provided with one temperature sensor, the preset value of the steam temperature in the heat exchange unit 2 is 98 ℃, and the preset value of the steam temperature at the connecting pipe 10 is 98 ℃. 1bar (absolute pressure) of clean steam is introduced into the heat exchange unit 2 through the steam conveying pipeline 8, and the speed of the clean steam entering the heat exchange unit 2 is controlled by the vacuum degree inside the heat exchange unit 2 (the vacuum degree is set to be-7 kPa, and the temperature of the steam corresponds to 98 ℃). When the temperature of the connecting pipe 10 exceeds 98 ℃, the pressure regulating structure and the first regulating valve 11 are closed, and the vacuum degree in the heat exchange unit reaches-7 kPa, the steam in the cavity has the temperature of 98 ℃; injecting the ARA emulsion into the heat exchange unit 2 at the temperature of 60 ℃ through a fluid dispersion structure at the flow rate of 300L/h, condensing steam on the surface of the ARA emulsion to release latent heat, and rapidly heating the ARA emulsion to 85-95 ℃; in the process, the steam temperature in the heat exchange unit 2 is regulated and controlled to be stable by regulating and controlling the starting, stopping and/or opening conditions of the vacuum treatment device, the first regulating valve, the second regulating valve and the fourth regulating valve;
step 2: the ARA emulsion falls into the bottom of the heat exchange unit 2 after being heated, and the heated fluid is controlled to stay in the fluid containing unit 17 for 15s through the linkage of a third regulating valve 13 and a liquid level detection device 14;
and step 3: the ARA emulsion treated in the heat exchange unit 2 enters the dehydration unit 4 to rapidly remove water, and the temperature of the ARA emulsion is reduced to 60-65 ℃.
Example 3
Step 1: the evacuation valve 16 is opened and the first regulating valve 11 is closed, and steam is introduced while non-condensable air inside the heat exchange unit 2 is discharged. The state monitoring device 5 is a thermometer, the heat exchange unit 2 and the connecting pipe 10 are respectively provided with one, the preset value of the steam temperature in the heat exchange unit 2 is 130 ℃, and the preset value of the steam temperature at the connecting pipe 10 is 125 ℃. When the temperature reaches the standard, closing the emptying valve and the first regulating valve 11, introducing 270KPa (absolute pressure) clean steam into the heat exchange unit 2 through the steam conveying pipeline 8, injecting the ARA emulsion into the heat exchange unit 2 at the temperature of 60 ℃ through the fluid dispersion structure at the flow rate of 300L/h after the air pressure in the heat exchange unit reaches 270KPa, condensing the steam on the surface of the ARA emulsion to release latent heat, and rapidly heating the ARA emulsion to 115-125 ℃; in the process, the steam temperature in the heat exchange unit 2 is regulated and controlled to be stable by regulating and controlling the starting, stopping and/or opening conditions of the emptying valve, the first regulating valve, the second regulating valve and the fourth regulating valve;
step 2: the ARA emulsion falls into the bottom of the heat exchange unit 2 after being heated, and the heated fluid is controlled to stay in the fluid containing unit 17 for 5s through the linkage of a third regulating valve 13 and a liquid level detection device 14;
and step 3: the ARA emulsion treated in the heat exchange unit 2 enters the dehydration unit 4 to rapidly remove water, and the temperature of the ARA emulsion is reduced to 60-65 ℃. Example 4
Step 1: the evacuation valve 16 is opened and the first regulating valve 11 is closed, and steam is introduced while non-condensable air inside the heat exchange unit 2 is discharged. The state monitoring device 5 is a thermometer, the heat exchange unit 2 and the connecting pipe 10 are respectively provided with one temperature sensor, the preset value of the steam temperature in the heat exchange unit 2 is 150 ℃, and the preset value of the steam temperature at the connecting pipe 10 is 145 ℃. Closing the emptying valve 16 and the first regulating valve 11, introducing 480KPa (absolute pressure) clean steam into the heat exchange unit 2 through the steam conveying pipeline 8 until the air pressure in the heat exchange unit reaches 480KPa (corresponding to the steam temperature of 150 ℃), injecting the ARA emulsion into the heat exchange unit 2 at the temperature of 60 ℃ through a fluid dispersion structure at the flow rate of 300L/h, condensing the steam on the surface of the ARA emulsion to release latent heat, and rapidly heating the ARA emulsion to 135-145 ℃; in the process, the temperature in the heat exchange unit 2 is regulated and controlled to be stable by regulating and controlling the starting, stopping and/or opening conditions of the emptying valve, the first regulating valve, the second regulating valve and the fourth regulating valve;
step 2: the ARA emulsion falls into the bottom of the heat exchange unit 2 after being heated, and the heated fluid is controlled to stay in the fluid containing unit 17 for 2 seconds through the linkage of a third regulating valve 13 and a liquid level detection device 14;
and step 3: the ARA emulsion treated in the heat exchange unit 2 enters the dehydration unit 4 to rapidly remove water, and the temperature of the ARA emulsion is reduced to 60-65 ℃.
The result shows that the sterilization of the device under the conditions of the above 4 temperatures has no influence on the content of the target substance of ARA, can achieve a relatively ideal sterilization effect on coliform bacteria, has an unsatisfactory sterilization effect on heat-resistant spores under the condition of below 120 ℃, gradually improves the sterilization effect along with the sterilization temperature condition of above 120 ℃, and can achieve a relatively ideal sterilization effect under the condition of 2s at 140 ℃. The denaturation rates of the whey proteins (total beta-lactoglobulin denaturation rate) are less than or equal to 20%, wherein the denaturation rate is 10% due to longer retention time (60s) in example 1, and the denaturation rate of the whey proteins is only 2% in example 2, although the temperature is lower, so that the protein coagulation and the like caused by the denaturation of the products are greatly reduced, and the solubility of the products taking the whey proteins as emulsifying agents is improved.
Examples 5, 6, 7, and 8 use raw milk as a target for sterilization, and add coliform and bacillus subtilis as indicator bacteria to the milk, and sterilize under different sterilization intensity conditions, and evaluate the effect of different sterilization intensities on the product by evaluating the killing effect of the indicator bacteria, the denaturation rate of whey protein (beta-lactoglobulin, lactalbumin), and thiamine as indicators.
Example 5
Step 1: the vacuum treatment device and the first regulating valve 11 are opened, and the non-condensable air in the heat exchange unit 2 is extracted. The state monitoring device 5 is a thermometer, the heat exchange unit 2 and the connecting pipe 10 are respectively provided with one temperature sensor, the preset value of the steam temperature in the heat exchange unit 2 is 90 ℃, and the preset value of the steam temperature at the connecting pipe 10 is 88 ℃. 1bar (absolute pressure) of clean steam is introduced into the heat exchange unit 2 through the steam conveying pipeline 8, and the speed of the clean steam entering the heat exchange unit 2 is controlled by the vacuum degree inside the heat exchange unit 2 (the vacuum degree is set to be-30 kPa, and the temperature of the steam is 90 ℃). When the temperature of the connecting pipe 10 exceeds 88 ℃, the pressure regulating structure and the first regulating valve 11 are closed, and the vacuum degree in the heat exchange unit reaches-30 KPa, the temperature of steam in the cavity is 90 ℃; raw milk is injected into the heat exchange unit 2 at a temperature of 60 ℃ through the fluid dispersion structure at a flow rate of 300L/h, steam is condensed on the surface of the raw milk to release latent heat, and the raw milk is rapidly heated to 75-85 ℃; in the process, the steam temperature in the heat exchange unit 2 is regulated and controlled to be stable by regulating and controlling the starting, stopping and/or opening conditions of the vacuum treatment device, the first regulating valve, the second regulating valve and the fourth regulating valve;
step 2: the raw milk falls into the bottom of the heat exchange unit 2 after being heated, and the heated fluid is controlled to stay in the fluid containing unit 17 for 60s through the linkage of the third regulating valve 13 and the liquid level detection device 14;
and step 3: the raw milk treated in the heat exchange unit 2 enters the dehydration unit 4 to rapidly remove moisture, and the temperature of the raw milk is reduced to 60-65 ℃.
Example 6
Step 1: the vacuum treatment device and the first regulating valve 11 are opened, and the non-condensable air in the heat exchange unit 2 is extracted. The state monitoring device 5 is a thermometer, the heat exchange unit 2 and the connecting pipe 10 are respectively provided with one temperature sensor, the preset value of the steam temperature in the heat exchange unit 2 is 98 ℃, and the preset value of the steam temperature at the connecting pipe 10 is 98 ℃. 1bar (absolute pressure) of clean steam is introduced into the heat exchange unit 2 through the steam conveying pipeline 8, and the speed of the clean steam entering the heat exchange unit 2 is controlled by the vacuum degree inside the heat exchange unit 2 (the vacuum degree is set to be-7 kPa, and the temperature of the steam corresponds to 98 ℃). When the temperature of the connecting pipe 10 exceeds 98 ℃, the pressure regulating structure and the first regulating valve 11 are closed, and the vacuum degree in the heat exchange unit reaches-7 kPa, the steam temperature in the cavity is 98 ℃; raw milk is injected into the heat exchange unit 2 at a temperature of 60 ℃ through the fluid dispersion structure at a flow rate of 300L/h, steam is condensed on the surface of the raw milk to release latent heat, and the raw milk is rapidly heated to 85-95 ℃; in the process, the steam temperature in the heat exchange unit 2 is regulated and controlled to be stable by regulating and controlling the starting, stopping and/or opening conditions of the vacuum treatment device, the first regulating valve, the second regulating valve and the fourth regulating valve;
step 2: the raw milk falls into the bottom of the heat exchange unit 2 after being heated, and the heated fluid is controlled to stay in the fluid containing unit 17 for 15s in a linkage manner through a third regulating valve 13 and a liquid level detection device 14;
and step 3: the raw milk treated in the heat exchange unit 2 enters the dehydration unit 4 to rapidly remove moisture, and the temperature of the raw milk is reduced to 60-65 ℃.
Example 7
Step 1: the evacuation valve 16 is opened and the first regulating valve 11 is closed, and steam is introduced while non-condensable air inside the heat exchange unit 2 is discharged. The state monitoring device 5 is a thermometer, the heat exchange unit 2 and the connecting pipe 10 are respectively provided with one, the preset value of the steam temperature in the heat exchange unit 2 is 130 ℃, and the preset value of the steam temperature at the connecting pipe 10 is 125 ℃. Closing the emptying valve 16 and the first adjusting valve 11, introducing 270KPa (absolute pressure) clean steam into the heat exchange unit 2 through the steam conveying pipeline 8 until the air pressure in the heat exchange unit reaches 270KPa (corresponding to the steam temperature of 130 ℃), injecting raw milk into the heat exchange unit 2 at the temperature of 60 ℃ through a fluid dispersion structure at the flow rate of 300L/h, condensing the steam on the surface of the raw milk emulsion to release latent heat, and rapidly heating the raw milk emulsion to 115-125 ℃; in the process, the steam temperature in the heat exchange unit 2 is regulated and controlled to be stable by regulating and controlling the starting, stopping and/or opening conditions of the emptying valve, the first regulating valve, the second regulating valve and the fourth regulating valve;
step 2: the raw milk falls into the bottom of the heat exchange unit 2 after being heated, and the heated fluid is controlled to stay in the fluid containing unit 17 for 5s in a linkage manner through a third regulating valve 13 and a liquid level detection device 14; (ii) a
And step 3: the raw milk emulsion treated in the heat exchange unit 2 enters the dehydration unit 4 to rapidly remove water, and the temperature of the raw milk is reduced to the temperature of the raw milk.
Example 8
Step 1: the evacuation valve 16 is opened and the first regulating valve 11 is closed, and steam is introduced while non-condensable air inside the heat exchange unit 2 is discharged. The state monitoring device 5 is a thermometer, the heat exchange unit 2 and the connecting pipe 10 are respectively provided with one temperature sensor, the preset value of the steam temperature in the heat exchange unit 2 is 150 ℃, and the preset value of the steam temperature at the connecting pipe 10 is 145 ℃. Closing the emptying valve 16 and the first regulating valve 11, introducing 480KPa (absolute pressure) clean steam into the heat exchange unit 2 through the steam conveying pipeline 8 until the air pressure in the heat exchange unit reaches 480KPa (corresponding to the steam temperature of 150 ℃), injecting ARA emulsion into the heat exchange unit 2 at the temperature of 60 ℃ through a fluid dispersion structure at the flow rate of 300L/h, condensing the steam on the surface of the raw milk emulsion to release latent heat, and rapidly heating the raw milk emulsion to 135-145 ℃; in the process, the steam temperature in the heat exchange unit 2 is regulated and controlled to be stable by regulating and controlling the starting, stopping and/or opening conditions of the emptying valve, the first regulating valve, the second regulating valve and the fourth regulating valve;
step 2: the raw milk falls into the bottom of the heat exchange unit 2 after being heated, and the heated fluid is controlled to stay in the fluid containing unit 17 for 2s in a linkage manner through a third regulating valve 13 and a liquid level detection device 14; (ii) a
And step 3: the raw milk emulsion treated in the heat exchange unit 2 enters the dehydration unit 4 to rapidly remove water, and the temperature of the raw milk emulsion is reduced to 60-65 ℃.
The result shows that the sterilization of the device under the conditions of the above 4 temperatures can achieve a relatively ideal sterilization effect on coliform bacteria, the sterilization effect on heat-resistant spores is not ideal under the condition of below 120 ℃, the sterilization effect is gradually improved along with the sterilization temperature condition of above 120 ℃, and the sterilization effect can achieve a relatively ideal sterilization effect under the condition of 140 ℃ for 2 s. The denaturation rates of the whey proteins (total beta-lactoglobulin denaturation rate) are less than or equal to 20%, wherein the denaturation rate is 10.3% due to long retention time (60s) in example 5 although the temperature is low, and the denaturation rate of the whey proteins is only 2.5% in example 6, so that the conditions of protein coagulation and the like caused by denaturation of the products are greatly reduced, and the solubility of the products taking the whey proteins as emulsifying agents is improved. The loss rate of thiamine (vitamin B1) is increased along with the temperature condition, but the overall loss rate is not high, and the influence on the product quality is not great.
The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A fluid heat treatment device is characterized by comprising a pressure adjusting structure, a heat exchange unit and a steam conveying pipeline; the pressure adjusting structure with the heat transfer unit passes through the connecting pipe intercommunication, install first governing valve on the connecting pipe, steam conveying pipeline with the heat transfer unit intercommunication, the last second governing valve that installs of steam conveying pipeline, install the state monitoring device in the heat transfer unit, the state monitoring device the pressure adjusting structure first governing valve with the second governing valve is connected with the micro-control spare electricity respectively.
2. The fluid heat treatment apparatus according to claim 1, further comprising a fluid containing unit and a dewatering unit, wherein the bottom of the heat exchange unit is communicated with the fluid containing unit, the fluid containing unit and the dewatering unit are communicated through a material conveying pipeline, a third regulating valve is installed on the material conveying pipeline, a liquid level detecting device is installed in the fluid containing unit, and the third regulating valve and the liquid level detecting device are respectively electrically connected with the micro-controller.
3. The fluid heat treatment device according to claim 1, wherein the heat exchange unit is communicated with a material conveying pipeline, a fourth regulating valve and a flow monitoring device are mounted on the material conveying pipeline, and the fourth regulating valve and the flow monitoring device are respectively and electrically connected with the micro-controller.
4. The fluid heat treatment device according to claim 1 or 3, further comprising a fluid dispersing structure, wherein the fluid dispersing structure comprises a dispersing part having a hollow inner cavity, the dispersing part is located in the heat exchange unit, and a plurality of spray holes are formed at the bottom of the dispersing part, any of the spray holes is communicated with the hollow inner cavity, and the fluid to be treated enters the heat exchange unit through the spray holes.
5. The fluid heat treatment apparatus according to claim 4, wherein the diameter of the nozzle hole is 0.8 to 2 mm.
6. The fluid heat treatment apparatus according to claim 4, wherein a distance between any two adjacent spray holes is 40 to 60 mm.
7. The fluid thermal treatment apparatus of claim 4, wherein said plurality of vapor delivery conduits are distributed about the periphery of said fluid dispersion structure.
8. A fluid heat treatment method is characterized in that steam is introduced into a heat exchange unit, the pressure in the heat exchange unit is adjusted until the temperature of the steam in the heat exchange unit reaches a preset value, a fluid to be treated is conveyed into the heat exchange unit, and the fluid to be treated and the steam reaching the preset value are subjected to heat exchange treatment in the heat exchange unit.
9. The method for heat treatment of a fluid according to claim 8, wherein the steam introduced into the heat exchange unit has an initial temperature T1The temperature of the fluid to be treated after heat exchange with the steam is T2，T1-T2<20。
10. The fluid heat treatment method according to claim 8 or 9, wherein a fluid containing unit is communicated with the bottom of the heat exchange unit, a heated fluid obtained after the fluid to be treated exchanges heat with steam enters the fluid containing unit, and the residence time of the heated fluid in the fluid containing unit is 1-120 s.
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| GB726452A (en) * | 1952-04-05 | 1955-03-16 | Alpura Ag | Heat treatment of liquids |
| JPH08226711A (en) * | 1995-02-23 | 1996-09-03 | Motoyama Shinko Kk | Heating fluid supplying apparatus |
| CN102652543A (en) * | 2012-05-22 | 2012-09-05 | 江南大学 | Floating type liquid food material heating device |
| CN206586284U (en) * | 2017-02-14 | 2017-10-27 | 佛山市恒芯磁能科技有限公司 | A kind of vacreation device |
| CN209197562U (en) * | 2018-12-04 | 2019-08-02 | 安徽禾庚生物技术有限公司 | A kind of heating device of automatic control |
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2020
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB726452A (en) * | 1952-04-05 | 1955-03-16 | Alpura Ag | Heat treatment of liquids |
| JPH08226711A (en) * | 1995-02-23 | 1996-09-03 | Motoyama Shinko Kk | Heating fluid supplying apparatus |
| CN102652543A (en) * | 2012-05-22 | 2012-09-05 | 江南大学 | Floating type liquid food material heating device |
| CN206586284U (en) * | 2017-02-14 | 2017-10-27 | 佛山市恒芯磁能科技有限公司 | A kind of vacreation device |
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