CN103585774B - Negative pressure steam heating apparatus and heating method thereof - Google Patents
Negative pressure steam heating apparatus and heating method thereof Download PDFInfo
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- CN103585774B CN103585774B CN201210294916.3A CN201210294916A CN103585774B CN 103585774 B CN103585774 B CN 103585774B CN 201210294916 A CN201210294916 A CN 201210294916A CN 103585774 B CN103585774 B CN 103585774B
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Abstract
The invention provides a negative pressure steam heating apparatus and a heating method thereof. The negative pressure steam heating apparatus comprises a first heat exchanger and a second heat exchanger, wherein the first heat exchanger and the second heat exchanger form enclosed space together. High pressure steam flowing through the shell of the first heat exchanger and having a first temperature exchanges heat with a first fluid flowing through a heat exchange tube of the first heat exchanger so as to produce negative pressure steam with a second temperature; the shell of the second heat exchanger receives the negative pressure steam which exchanges heat with a concentrate flowing through a heat exchange tube of the second heat exchanger, and the concentrate absorbs heat to heat a material solute to a third temperature; and the negative pressure steam in the shell of the second heat exchanger releases heat energy and is then converted into the first fluid which flows back to the first heat exchanger. According to the invention, through two heat exchange procedures of the first heat exchanger and the second heat exchanger, the material solute is mildly heated to a preset temperature, so situations like oxidation, deterioration and material loss of the material solute in the process of heating are avoided.
Description
Technical field
The present invention relates to concentrated or de-residual applied technical field, particularly relate to a kind of for concentrated or de-residual negative pressure steam-heating apparatus.
Background technology
Current, in traditional concentrated or de-residual application, mainly adopt in two ways: the first adopts the mode of heating directly passing into high-temperature steam, heats, to be separated solvent and solute to the material solute in extract or concentrate.But the heating-up temperature in which is difficult to control, and this is for the material solute of those non-refractories, often easily produces oxidation, go bad and the situation such as material loss; It two is adopt immersion method, but under identical heating-up temperature, the heat content of water is more much smaller than the heat content of such as high-temperature steam, causes the operating efficiency of water bath heating system lower.In addition, water bath heating needs to increase the hardware facility such as water tank, circulating pump, and heating cost is higher, and by the water resource of at substantial, energy consumption is larger.
In view of this, how to design a kind of firing equipment of novelty and the using method of this firing equipment, while overcoming above-mentioned defect or deficiency, also can accelerate heat exchange process, promoting the operating efficiency of firing equipment, is the problem that person skilled is urgently to be resolved hurrily in the industry.
Summary of the invention
For of the prior art for the above-mentioned defect existing for concentrated or de-residual firing equipment, the invention provides a kind of negative pressure steam-heating apparatus of novelty.
According to one embodiment of the present invention, provide a kind of negative pressure steam-heating apparatus, this negative pressure steam-heating apparatus comprises:
One First Heat Exchanger, comprise a heat exchanger tube and a housing, wherein, flow through described housing and a high steam with one first temperature carries out heat exchange with the first fluid flowing through described heat exchanger tube, thus described first fluid is converted into the negative pressure steam of one second temperature; And
One second heat exchanger, be positioned at the top of described First Heat Exchanger, a confined space is jointly formed with described First Heat Exchanger, described second heat exchanger comprises a heat exchanger tube and a housing, wherein, the housing of described second heat exchanger receives described negative pressure steam, and carries out heat exchange with the concentrate flowed through in the heat exchanger tube of described second heat exchanger, makes described concentrate absorb heat thus material solute is wherein heated to one the 3rd temperature;
Wherein, the negative pressure steam release heat energy in the housing of described second heat exchanger, is back to described First Heat Exchanger after being converted into described first fluid.
In an embodiment wherein, this negative pressure steam-heating apparatus also comprises one first pipeline and one second pipeline, all be arranged between described First Heat Exchanger and described second heat exchanger, described negative pressure steam Transportation extremely described second heat exchanger of described first pipeline in order to be exported by described First Heat Exchanger, described second pipeline is back to described First Heat Exchanger in order to the described first fluid exported by described second heat exchanger.
In an embodiment wherein, first fluid is water or alcohol.
In an embodiment wherein, this first temperature is greater than 100 degrees Celsius, and this second temperature is between 10 degrees Celsius to 90 degrees Celsius.Further, this second temperature is between 40 degrees Celsius to 50 degrees Celsius.
In an embodiment wherein, the 3rd temperature is less than 70 degrees Celsius.Further, when material solute is capsicum oil, described 3rd temperature is 60 degrees Celsius; When material solute is ginger essential oil, described 3rd temperature is 40 degrees Celsius.
In an embodiment wherein, this negative pressure steam-heating apparatus also comprises a temperature control electromagnetic and a temperature sensor, described temperature control electromagnetic is installed on the higher pressure steam inlet end of described First Heat Exchanger, described temperature sensor is in order to detect the Current Temperatures of the described negative pressure steam being delivered to described second heat exchanger from described First Heat Exchanger, and the Current Temperatures by described negative pressure steam controls the keying of described temperature control electromagnetic.
In an embodiment wherein, this negative pressure steam-heating apparatus also comprises a vacuum magnetic valve, and when the low vacuum in described confined space is in a predetermined vacuum degree threshold value, described vacuum magnetic valve is opened, to perform vacuum pumping.Further, this predetermined vacuum degree threshold value is the arbitrary numerical value between-0.01MPa ~-0.095MPa.
In an embodiment wherein, this negative pressure steam-heating apparatus also comprises a discharging opening, is arranged at the bottom of described second heat exchanger, in order to discharge the described material solute after heating.
In an embodiment wherein, this negative pressure steam-heating apparatus also comprises a liquid outlet, is arranged at the bottom of described First Heat Exchanger, in order to discharge condensed first fluid.
According to another embodiment of the present invention, provide a kind of negative pressure steam heating method, this negative pressure steam heating method comprises the following steps:
There is provided a First Heat Exchanger, this First Heat Exchanger comprises a heat exchanger tube and a housing, wherein, has a high steam of one first temperature, have a first fluid in described heat exchanger tube in described housing;
Described high steam and described first fluid are carried out heat exchange in described First Heat Exchanger, thus described first fluid is converted into the negative pressure steam of one second temperature;
One second heat exchanger is provided, be positioned at the top of described First Heat Exchanger, jointly form a confined space with described First Heat Exchanger, wherein, the housing of described second heat exchanger receives described negative pressure steam via one first pipeline, and the heat exchanger tube of described second heat exchanger has a concentrate;
Described negative pressure steam and described concentrate are carried out heat exchange in described second heat exchanger, makes described concentrate absorb heat thus material solute is wherein heated to one the 3rd temperature; And
The described negative pressure steam-reforming of release heat energy is described first fluid, is back to described First Heat Exchanger via one second pipeline.
Adopt negative pressure steam-heating apparatus of the present invention and heating means thereof, by First Heat Exchanger, high steam and the first fluid of such as aqueous water are carried out heat exchange, thus produce a negative pressure steam, then heat exchange will be carried out with concentrate in this negative pressure steam Transportation to the second heat exchanger, make material solute mild heat in concentrate to the temperature preset, therefore can avoid material solute in heating process, occurs oxidation, go bad or the situation such as material loss.In addition, the heat content of steam will much larger than the heat content of water, and thus the rate of heat exchange of this negative pressure steam-heating apparatus is fast, and the efficiency of heating surface is higher.Moreover, this negative pressure steam-heating apparatus circulating-heating in the confined space of condition of high vacuum degree, the temperature-controllable of negative pressure steam need not continue to pass into high temperature and high pressure steam in certain temperature range, and the condensed water being back to First Heat Exchanger also can participate in heat exchange circulation again, therefore, it is possible to economize on resources widely, reduce energy consumption.
Accompanying drawing explanation
Reader, after having read the specific embodiment of the present invention with reference to accompanying drawing, will become apparent various aspects of the present invention.Wherein,
Fig. 1 illustrates the structural representation of the negative pressure steam-heating apparatus of the embodiment according to the application; And
Fig. 2 illustrates the FB(flow block) of the negative pressure steam heating method of another embodiment according to the application.
Detailed description of the invention
The technology contents disclosed to make the application is more detailed and complete, and can refer to accompanying drawing and following various specific embodiment of the present invention, mark identical in accompanying drawing represents same or analogous assembly.But those of ordinary skill in the art should be appreciated that hereinafter provided embodiment is not used for limiting the scope that contains of the present invention.In addition, accompanying drawing, only for being schematically illustrated, is not drawn according to its life size.
With reference to the accompanying drawings, the detailed description of the invention of various aspects of the present invention is described in further detail.Before expansion specifically describes, briefly introduce the relative theory of pipe shell type heat exchange structure.Shell-and-tube heat exchanger is also referred to as tubular heat exchanger, it is the dividing wall type heat exchanger using closed wall of restraining in the housing as heat-transfer area, this heat exchange structure is simpler, operation is reliable, available various structural material (mainly metal material) manufactures, can use at high temperature under high pressure, be apply wider exchanger type.
For cold and hot (or being called high temperature and low temperature) the two kinds of fluids in heat exchanger, a kind of at Bottomhole pressure, be called tube side; Another kind of in the outer flowing of pipe, be called shell side.In general, the fluid of tube side and shell side is selected generally to follow: by the suitable bottom in and top out of fluid heated, the suitable upper entering and lower leaving of cooled fluid; When using Steam Heating, for horizontal or vertical heat exchanger, steam should enter from upper orifice, and condensed water is discharged from lower nozzle; High temperature fluid should walk tube side, and cryogen should walk shell side; Clean fluid shell side, and easily produce blocking, the fluid of fouling should walk tube side.
Fig. 1 illustrates the structural representation of the negative pressure steam-heating apparatus of the embodiment according to the application.
With reference to Fig. 1, negative pressure steam-heating apparatus of the present invention comprises First Heat Exchanger 10 and one second heat exchanger 20.Wherein, the second heat exchanger 20 is positioned at the top of First Heat Exchanger 10, and the second heat exchanger 20 forms a confined space jointly with First Heat Exchanger 10.
First Heat Exchanger 10 comprises heat exchanger tube 104 and a housing 102.After the housing 102 of First Heat Exchanger 10 passes into high steam, flow through this housing 102 and the high steam with the first temperature carries out heat exchange with the first fluid flowing through heat exchanger tube 104.At the end of heat exchange, high temperature and high pressure steam release heat is converted into steam condensate (SC), and the outlet 108 via First Heat Exchanger 10 is discharged.Meanwhile, first fluid absorbs heat thus is converted into the negative pressure steam of the second temperature.
In one embodiment, first fluid is water or alcohol.According to the numerical value difference between the boiling temperature of water and the boiling temperature of alcohol, easy understand, when first fluid is water, the temperature of the negative pressure water vapour after conversion is relatively high; When first fluid is alcohol, the temperature of the negative pressure alcohol steam after conversion is relatively low.Because the heating-up temperature of different material solute is not necessarily identical, thus the kind of first fluid should use situation elasticity to select according to reality.
In one embodiment, high temperature and high pressure steam, such as water vapour, the first temperature be greater than 100 degrees Celsius, after the heat exchange between high temperature and high pressure steam and first fluid, the second temperature of negative pressure steam is between 10 degrees Celsius to 90 degrees Celsius.Preferably, the second temperature of this negative pressure steam is between 40 degrees Celsius to 50 degrees Celsius.
Second heat exchanger 20 is positioned at the top of First Heat Exchanger 10.This second heat exchanger 20 comprises heat exchanger tube 203 and a housing 201.Wherein, the housing 201 of this second heat exchanger 20 is via the negative pressure steam (as shown in Fig. 1 vertical direction of arrow upward) of the first pipeline P1 reception from First Heat Exchanger 10, and this negative pressure steam has the second temperature.Heat exchanger tube 203 due to the second heat exchanger 20 comprises concentrate (such as, this concentrate is made up of material solute and solvent), and the negative pressure steam in housing 201 and the concentrate in heat exchanger tube 203 carry out heat exchange.At the end of heat exchange, with negative pressure steam for water vapour exemplarily, the negative pressure steam-reforming of the second temperature is negative pressure steam condensate (SC), and this negative pressure steam condensate (SC) is back to First Heat Exchanger 10(as shown in the direction of arrow down vertical in Fig. 1 via the second pipeline P2).Meanwhile, the solvent absorption converting heat in concentrate is steam and discharges from outlet 203, and the material solute in concentrate is while mild heat to the 3rd temperature, can discharge by discharging opening 207.
In one embodiment, this negative pressure steam-heating apparatus comprises one first pipeline P1 and one second pipeline P2, all be arranged between First Heat Exchanger 10 and the second heat exchanger 20, negative pressure steam Transportation to the second heat exchanger 20 of this first pipeline P1 in order to First Heat Exchanger 10 is exported.Second pipeline P2 is back to First Heat Exchanger 10 in order to the liquid (that is, the material after negative pressure steam-condensation) exported by the second heat exchanger 20.
In one embodiment, after the concentrate in the heat exchanger tube 203 of the second heat exchanger 20 and the negative pressure steam in housing 201 carry out heat exchange, the material solute in concentrate is less than 70 degrees Celsius by the 3rd temperature after heating.Such as, when material solute is capsicum oil, the 3rd temperature after heating is 60 degrees Celsius.And for example, when material solute is ginger essential oil, the 3rd temperature after heating is 40 degrees Celsius.Should be understood that, because the temperature of the negative pressure steam from First Heat Exchanger 10 is between the temperature range of 10 degrees Celsius to 90 degrees Celsius, thus can select the heating-up temperature of material solute according to concrete situation elasticity, and oxidized, the rotten or loss of material solute can not be caused.
In one embodiment, for the consideration of the temperature control aspect of negative pressure steam, this negative pressure steam-heating apparatus also comprises temperature control electromagnetic 106 and a temperature sensor 209.This temperature control electromagnetic 106 is installed on the higher pressure steam inlet end of First Heat Exchanger 10, this temperature sensor is arranged at the optional position (being preferably positioned at the porch near the second heat exchanger 20) of the first pipeline P1, in order to detect the Current Temperatures of the negative pressure steam being delivered to the second heat exchanger 20 from First Heat Exchanger 10, the Current Temperatures by this negative pressure steam controls the keying of temperature control electromagnetic 106.
When the temperature of negative pressure steam is lower than preset temperature required by heat exchange, opening temp. control magnetic valve 106, continue to pass into the housing 102 of high temperature and high pressure steam to First Heat Exchanger 10, after making high temperature and high pressure steam and first fluid carry out heat exchange, the temperature being converted into negative pressure steam continues to raise.When temperature sensor 209 shows that the Current Temperatures of negative pressure steam has reached this preset temperature, close this temperature control electromagnetic 106.It can thus be appreciated that the negative pressure vapor (steam) temperature sending into the second heat exchanger 20 via the first pipeline P1 can remain in the temperature range of a relative constancy.
In one embodiment, for the vacuum consideration of the confined space that First Heat Exchanger 10 and the second heat exchanger 20 are formed, this negative pressure steam-heating apparatus also comprises a vacuum magnetic valve 205, when the low vacuum in this confined space being detected in a predetermined vacuum degree threshold value, this vacuum magnetic valve 205 is opened, and carries out vacuum pumping to this confined space.Such as, this predetermined vacuum degree threshold value be-0.01MPa ~--the arbitrary numerical value between 0.095MPa, compare according to current vacuum level and this threshold value the keying controlling vacuum magnetic valve 205.
In addition, this negative pressure steam-heating apparatus also comprises a discharging opening 207, is arranged at the bottom of the second heat exchanger 20, in order to discharge the material solute after heating.And the solvent in concentrate also can be discharged from the corresponding port of the second heat exchanger 20 after the heating.Similarly, this negative pressure steam-heating apparatus also comprises a liquid outlet 110, is arranged at the bottom of First Heat Exchanger 10, in order to discharge condensed first fluid.
Adopt negative pressure steam-heating apparatus of the present invention and heating means thereof, by First Heat Exchanger, high steam and the first fluid of such as aqueous water are carried out heat exchange, thus produce a negative pressure steam, then heat exchange will be carried out with concentrate in this negative pressure steam Transportation to the second heat exchanger, make material solute mild heat in concentrate to the temperature preset, therefore can avoid material solute in heating process, occurs oxidation, go bad or the situation such as material loss.In addition, the heat content of steam will much larger than the heat content of water, and thus the rate of heat exchange of this negative pressure steam-heating apparatus is fast, and the efficiency of heating surface is higher.Moreover, this negative pressure steam-heating apparatus circulating-heating in the confined space of condition of high vacuum degree, the temperature-controllable of negative pressure steam need not continue to pass into high temperature and high pressure steam in certain temperature range, and the condensed water being back to First Heat Exchanger also can participate in heat exchange circulation again, therefore, it is possible to economize on resources widely, reduce energy consumption.
Fig. 2 illustrates the FB(flow block) of the negative pressure steam heating method of another embodiment according to the application.
With reference to Fig. 2, the method corresponds to the negative pressure steam-heating apparatus shown in Fig. 1.In other words, this negative pressure steam heating method also can be used as the method for operating of this negative pressure steam-heating apparatus.
Specifically, in step s 11, first provide a First Heat Exchanger 10, this First Heat Exchanger 10 comprises heat exchanger tube 104 and a housing 102.Pass into a high steam of one first temperature in this housing 102, there is in this heat exchanger tube a first fluid.At this, the first temperature is be greater than the Temperature numerical of 100 degrees Celsius.Then, in step s 13, high steam and first fluid are carried out heat exchange in First Heat Exchanger 10, thus first fluid is converted into the negative pressure steam of one second temperature.At this, the second temperature is the arbitrary Temperature numerical between 10 degrees Celsius to 90 degrees Celsius.
Then, in step S15, provide one second heat exchanger 20, this second heat exchanger 20 is positioned at the top of First Heat Exchanger 10, jointly forms a confined space with this First Heat Exchanger 10.Wherein, the housing 201 of the second heat exchanger 20 receives negative pressure steam via one first pipeline P1, accommodates concentrate in the heat exchanger tube 203 of the second heat exchanger 20.In step S17, negative pressure steam and concentrate are carried out heat exchange in the second heat exchanger 20, make concentrate absorb heat thus material solute is wherein heated to one the 3rd temperature.At this, the 3rd temperature can be set to be less than 70 degrees Celsius.Finally, perform in step S19, be first fluid by the negative pressure steam-reforming releasing heat energy, be back to First Heat Exchanger 10 via one second pipeline P2.Compared to the heating water bath mode in conventional heating system, not only the efficiency of heating surface is high for the negative pressure steam heating method in above-described embodiment, and the saving of water resource is also considerable.
Above, the specific embodiment of the present invention is described with reference to the accompanying drawings.But those skilled in the art can understand, when without departing from the spirit and scope of the present invention, various change and replacement can also be done to the specific embodiment of the present invention.These change and replace and all drop in claims of the present invention limited range.
Claims (13)
1. a negative pressure steam-heating apparatus, is characterized in that, described negative pressure steam-heating apparatus comprises:
One First Heat Exchanger, comprise a heat exchanger tube and a housing, wherein, flow through described housing and a high steam with one first temperature carries out heat exchange with the first fluid flowing through described heat exchanger tube, thus described first fluid is converted into the negative pressure steam of one second temperature; And
One second heat exchanger, be positioned at the top of described First Heat Exchanger, a confined space is jointly formed with described First Heat Exchanger, described second heat exchanger comprises a heat exchanger tube and a housing, wherein, the housing of described second heat exchanger receives described negative pressure steam, and carries out heat exchange with the concentrate flowed through in the heat exchanger tube of described second heat exchanger, makes described concentrate absorb heat thus material solute is wherein heated to one the 3rd temperature;
Wherein, the negative pressure steam release heat energy in the housing of described second heat exchanger, is back to described First Heat Exchanger after being converted into described first fluid.
2. negative pressure steam-heating apparatus according to claim 1, it is characterized in that, also comprise one first pipeline and one second pipeline, all be arranged between described First Heat Exchanger and described second heat exchanger, described negative pressure steam Transportation extremely described second heat exchanger of described first pipeline in order to be exported by described First Heat Exchanger, described second pipeline is back to described First Heat Exchanger in order to the described first fluid exported by described second heat exchanger.
3. negative pressure steam-heating apparatus according to claim 2, is characterized in that, described first fluid is water or alcohol.
4. negative pressure steam-heating apparatus according to claim 1, is characterized in that, described first temperature is greater than 100 degrees Celsius, and described second temperature is between 10 degrees Celsius to 90 degrees Celsius.
5. negative pressure steam-heating apparatus according to claim 4, is characterized in that, described second temperature is between 40 degrees Celsius to 50 degrees Celsius.
6. negative pressure steam-heating apparatus according to claim 4, is characterized in that, described 3rd temperature is less than 70 degrees Celsius.
7. negative pressure steam-heating apparatus according to claim 6, is characterized in that, when described material solute is capsicum oil, described 3rd temperature is 60 degrees Celsius; When described material solute is ginger essential oil, described 3rd temperature is 40 degrees Celsius.
8. negative pressure steam-heating apparatus according to claim 1, it is characterized in that, also comprise a temperature control electromagnetic and a temperature sensor, described temperature control electromagnetic is installed on the higher pressure steam inlet end of described First Heat Exchanger, described temperature sensor is in order to detect the Current Temperatures of the described negative pressure steam being delivered to described second heat exchanger from described First Heat Exchanger, and the Current Temperatures by described negative pressure steam controls the keying of described temperature control electromagnetic.
9. negative pressure steam-heating apparatus according to claim 1, is characterized in that, also comprises a vacuum magnetic valve, and when the low vacuum in described confined space is in a predetermined vacuum degree threshold value, described vacuum magnetic valve is opened, to perform vacuum pumping.
10. negative pressure steam-heating apparatus according to claim 9, is characterized in that, described predetermined vacuum degree threshold value is the arbitrary numerical value between-0.01MPa ~-0.095MPa.
11. negative pressure steam-heating apparatus according to claim 1, is characterized in that, also comprise a discharging opening, are arranged at the bottom of described second heat exchanger, in order to discharge the described material solute after heating.
12. negative pressure steam-heating apparatus according to claim 1, is characterized in that, also comprise a liquid outlet, be arranged at the bottom of described First Heat Exchanger, in order to discharge condensed described first fluid.
13. 1 kinds of negative pressure steam heating methods, is characterized in that, this negative pressure steam heating method comprises the following steps:
There is provided a First Heat Exchanger, this First Heat Exchanger comprises a heat exchanger tube and a housing, wherein, has a high steam of one first temperature, have a first fluid in described heat exchanger tube in described housing;
Described high steam and described first fluid are carried out heat exchange in described First Heat Exchanger, thus described first fluid is converted into the negative pressure steam of one second temperature;
One second heat exchanger is provided, be positioned at the top of described First Heat Exchanger, jointly form a confined space with described First Heat Exchanger, wherein, the housing of described second heat exchanger receives described negative pressure steam via one first pipeline, and the heat exchanger tube of described second heat exchanger has a concentrate;
Described negative pressure steam and described concentrate are carried out heat exchange in described second heat exchanger, makes described concentrate absorb heat thus material solute is wherein heated to one the 3rd temperature; And
The described negative pressure steam-reforming of release heat energy is described first fluid, is back to described First Heat Exchanger via one second pipeline.
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| CN201210294916.3A CN103585774B (en) | 2012-08-17 | 2012-08-17 | Negative pressure steam heating apparatus and heating method thereof |
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| CN201210294916.3A CN103585774B (en) | 2012-08-17 | 2012-08-17 | Negative pressure steam heating apparatus and heating method thereof |
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| CN107796237A (en) * | 2017-11-30 | 2018-03-13 | 无锡弘鼎华化工设备有限公司 | negative pressure steam heating method and system |
| CN110508016A (en) * | 2019-08-22 | 2019-11-29 | 无锡市海昌机械设备有限公司 | Modular solvent evaporation system |
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| CN1334753A (en) * | 1998-12-14 | 2002-02-06 | 奥维深产品公司 | Rotating plate fluid evaporator and condenser |
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