CN202605770U - Novel water heating system for supercritical fluid extraction device - Google Patents

Novel water heating system for supercritical fluid extraction device Download PDF

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Publication number
CN202605770U
CN202605770U CN2012202676778U CN201220267677U CN202605770U CN 202605770 U CN202605770 U CN 202605770U CN 2012202676778 U CN2012202676778 U CN 2012202676778U CN 201220267677 U CN201220267677 U CN 201220267677U CN 202605770 U CN202605770 U CN 202605770U
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CN
China
Prior art keywords
water
water tank
heating
supercritical fluid
kettle
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Expired - Fee Related
Application number
CN2012202676778U
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Chinese (zh)
Inventor
罗松明
蒲彪
刘书亮
叶劲松
王燕高
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Sichuan Agricultural University
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Sichuan Agricultural University
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Priority to CN2012202676778U priority Critical patent/CN202605770U/en
Application granted granted Critical
Publication of CN202605770U publication Critical patent/CN202605770U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model discloses a novel water heating system for a supercritical fluid extraction device, which relates to the technical field of the supercritical extraction, and the novel water heating system comprises a water tank, an electric heater, a water temperature control sensor, a heat preserving water cavity and a water pump, wherein the water pump is communicated with the heat preserving water cavity through a water inlet pipeline, the water pump is arranged on a water inlet pipeline on one side outside the water tank, and the bottom of the water tank is provided with a water discharging pipeline. Due to the adoption of the novel water heating system, the outer surface of an external sealing structure of the water pump is free from being contacted with the water inside the water tank, and a water pump impeller and an external sealing component of the water pump impeller are not contacted with hot water and not corroded by the hot water after the extraction and separation procedures of the water pump.

Description

A kind of novel water heating system that is used for supercritical fluid extraction equipment
Technical field
The utility model relates to the supercritical extraction technique field, just relates to exactly that a kind of what be applicable to supercritical extract equipment is the device for carrying out said of the heating system of media with water.
Background technology
The principle of supercritical fluid extraction separation process is to utilize supercritical fluid (like carbon dioxide) that some special natural products is had special dissolution; Utilize the solvability of supercritical fluid and the relation of its density, promptly utilize pressure and temperature that the influence of supercritical fluid solvability is carried out.Under supercriticality,, it is extracted the composition of polarity size, boiling point height and molecular weight size selectively successively with material contact overcritical and to be separated.Certainly; The resulting extract of corresponding each pressure limit can not be single; But the blending constituent that can controlled condition obtains optimal proportion; Method by decompression, intensification makes supercritical fluid become common gases then, is extracted material and then separates out fully or basically, separates the purpose of purifying thereby reach.The device fabrication merchant who has has also set up rectification working process after extraction and separation circuit, to reach the extracted product that obtains is separated according to different volatility and collects.The equipment of operations such as supercritical fluid extraction, separation and rectifying all requires the certain temperature of maintenance in running.
The equipment of operations such as supercritical fluid extraction, separation and rectifying all requires the certain temperature of maintenance in running, for this reason, equipment manufacturers have developed the device of internal heat type ceramic insulation heater and two kinds of heat tracings of heating water jacket.
Granted publication number is CN2179191Y; Granted publication day is disclosed " a supercritical fluid extraction appearance " in the Chinese utility model patent specification on October 12nd, 1994; Design internal heat type ceramic insulation heater and realized the heat tracing operation of extraction equipment; This heating and heat-insulating device can heat and reaches 200 ℃ or higher temperature, but the cost of equipment is higher.
Because the temperature that operations such as the extraction of supercritical extract appearance, separation require is lower; Generally be no more than 50-60 ℃; According to these characteristics; Overcritical equipment manufacturers have designed and developed the heat tracing operation that water heating system is realized supercritical extraction unit, with the production cost that reduces equipment with reduce the cost of use that overcritical equipment uses the client.The structure of the water heating system of each overcritical equipment manufacturers design is as shown in Figure 1 at present.The principal character of this traditional water heating system is:
1. the heat tracing operation that extracts kettle or separation kettle (9), rectifying column (14) realizes through its peripheral pipe with spiral pipe type heating water jacket (10);
2. the top of water tank (1) is more lower slightly than the outlet pipeline (7) of heating water jacket (10) bottom, and for ease of the convenience of operation, present water tank (1) usually places on the ground, so present water tank (1) all is not provided with discharge pipe line;
3. for ease of the interpolation of water tank (1) water, only designed a filler (5), and the filler pipe road has not been set;
4. the inlet pipeline (12) at heating water jacket (10) top couples together through a water pump (13) and water tank (1), thereby the hot water of water tank (1) can be flowed among the heating water jacket (10).The manufacturer that has then places the inlet pipeline (12) of heating water jacket (10) bottom of heating water jacket (10), and its outlet pipeline (7) is arranged on the top of heating water jacket (10).Since the water pump effect to as if hot water; If water pump is placed on the top of water tank; Then vaporization takes place and reduces water pump delivering hot water's efficient greatly in water more easily; While is owing to the existence of second characteristic of traditional water heating system, so equipment manufacturers have selected water pump (13) is immersed in the mentality of designing in the water tank (1) at large.
The shortcoming of traditional water heating system is:
1. for realizing the heat tracing operation of extraction kettle or separation kettle (9), rectifying column (14); Caloric requirement among the heating water jacket (10) extracts in kettle or separation kettle (9), the rectifying column (14), so heat transfer efficiency is lower through just being delivered to after " tube wall of water pipe " and " extraction or separates the chamber wall of kettle " two layer medium;
2. water tank (1) is not provided with discharge pipe line and filler pipe road, and the enforcement of " to water tank (1) Zhong Jiashui " or " discharging the water in the water tank (1) " all bothers;
3. water pump (13) integral body is immersed in the water tank (1); Because of water tank (1) designing and arranging water lines not; Water pump (13) will receive the immersion of high-temperature water behind end-of-job, the external structure of the water pump (13) that uses in the overcritical equipment in early days is ferrous material, and what have also scribbles paint at the outer surface of water pump (13); Under long-term action of soaking; The pump housing hermetically-sealed construction of this irony water pump and impeller all will corrode and finally can't operate as normal gradually, and the incrustation scale of generation also can influence the proper flow of water among the heating water jacket (10), and influence extraction kettle or separate the enforcement of the heat tracing operation of kettle (9), rectifying column (14).Though there have equipment manufacturers newly to adopt in recent years to be a kind of with the outside enclosed construction material of duroplasts replacement irony as water pump (13) impeller; But will be immersed in the water tank (1) by this water pump (13); If duroplasts is immersed in the water (especially need be heated and be in the water of higher temperature for a long time) for a long time; After certain service time, this duroplasts will produce the situation of damage gradually because of frequently receiving heat effect, thereby influences heating water jacket's (10) normal operation.In recent years, the researcher who has has inquired into 70-90 ℃ supercritical extraction process condition, and the water pump of traditional water heating system is worked under this experiment condition, will damage more easily.
The utility model content
For solving existing above-mentioned technical problem in the prior art; The utility model provides a kind of novel water heating system that is used for supercritical fluid extraction equipment; Adopt the utility model; Can make water pump outer seal structure outer surface not with water tank in water contact, water pump is after extraction and separation circuit operation completion, water pump vane and outer seal thereof do not receive the contact of hot water even the influence of corrosion.
The utility model is realized through adopting following technical proposals:
A kind of novel water heating system that is used for supercritical fluid extraction equipment; Comprise water tank, electric heater, water temperature control sensor and water pump; It is characterized in that: said water pump is set in place on the said inlet pipeline of the outside side of water tank, is provided with discharge pipe line at water tank bottom.
Also include the insulation water cavity, said insulation water cavity is arranged on the extraction kettle or separates the outer wall of kettle and rectifying column, and said inlet pipeline and outlet pipeline are communicated with the insulation water cavity.
Said water tank is provided with the filler pipe road, and the filler pipe road is communicated with water supply line from the beginning.
On the discharge pipe line of outlet pipeline, the water tank of insulation water cavity and filler pipe road, be respectively arranged with magnetic valve.
The inlet pipeline of said insulation water cavity and the discharge pipe line of water tank are the triplate line structures, and magnetic valve is arranged on the discharge ends of tank drains pipeline.
Between water tank and ground, be provided with the bottom fixed mount.
Compared with prior art, the beneficial effect that the utility model reached is following:
1, in the utility model, adopts water pump is set in place the technical scheme on the said inlet pipeline of the outside side of water tank, avoided water pump to be corroded in the hot water of long period of soaking in water tank, thereby prolonged the service life of water pump and whole device; Simultaneously; Bottom at water tank is provided with discharge pipe line; The discharge pipe line of water tank is the triplate line structure with the inlet pipeline of insulation water cavity, is provided with a magnetic valve in the discharge ends of discharge pipe line, and such version is used at overcritical equipment can be in time with heating water tank and the hot water emptying that is incubated in the water cavity after finishing; Avoided the damaging influence of hot water, also can reduce the generation of the incrustation scale in the water circulation pipe water pump.
2, in the utility model, be provided with the insulation water cavity at the outer wall of " extraction kettle or separate kettle, rectifying column ", said inlet pipeline and outlet pipeline be incubated water cavity and be communicated with, such version has improved the efficient of heat exchange.
3, in the utility model, on the filler pipe road of outlet pipeline, the water tank of insulation water cavity and discharge pipe line, all be provided with magnetic valve, realized the automation control of water heating system.
Description of drawings
Fig. 1 is the structural representation of the traditional water heating system of supercritical extract appearance; Wherein Fig. 1-1 is the structural representation of the traditional water heating system of extraction kettle or separation kettle; Fig. 1-2 is the structural representation of the traditional water heating system of rectifying column kettle, and Fig. 1-3 is the structural representation of electric heater.
Fig. 2 is the structural representation about the water heating system of supercritical extract appearance of the utility model; Wherein Fig. 2-1 is the structural representation of the water heating system of extraction kettle or separation kettle; Fig. 2-2 is the structural representation of the water heating system of rectifying column kettle, and Fig. 2-3 is the structural representation of electric heater.
Figure acceptance of the bid note is respectively: 1. water tank; 2. electric heater; 3. the inlet of screw type fluid circuit; 4. screw type fluid circuit; 5. the filler of water tank; 6. water temperature is controlled sensor; The heating water jacket or the insulation water cavity outlet pipeline (being back in the water tank); 8. extract the entering pipeline of the supercritical fluid of kettle or separation kettle; 9. extract kettle or separate kettle; 10. (pipe with spiral pipe type) heating water jacket; 11. the outflow pipeline of the supercritical fluid of extraction kettle or separation kettle; 12. the inlet pipeline of heating water jacket or insulation water cavity; 13. water pump; 14. rectifying column; 15. the fluid of rectifying column gets into pipeline; 16. the fluid of rectifying column flows out pipeline; 17. the fraction collection pipeline of rectifying column; 18. the filler pipe road of water tank; 19. magnetic valve; 20. insulation water cavity; 21. the water level peephole of insulation water cavity; 22. tank drains pipeline; 23. water tank bottom fixed mount.
The specific embodiment
Embodiment 1
Preferred forms as the utility model is following: in Fig. 2, be provided with electric heater 2, the water tank filler pipe road 18 that the water in the water tank 1 is heated at the top of water tank 1 and have automatic control add the water time response magnetic valve 19, be used for monitoring in real time the sensor 6 of water tank water temperature; For ease of the recycle of " extraction kettle or separation kettle 9, rectifying column 14 " peripheral insulation water cavity 20 waters and the realization of insulation, and designed the outlet pipeline 7 that is incubated water cavity 20.
In the water heating system of extraction and separation circuit; Also be provided with screw type fluid circuit 4 in the water tank 1; Heating or cooling effect through water tank 1; Make " wait to get into the extraction kettle or separate the fluid of kettle 9 " in screw type fluid circuit 4, change the fluid of uniform temperature into, through the extraction kettle or after separating the entering pipeline 8 of supercritical fluid of kettle 9, get in extraction kettle or the separation kettle 9 then; The entering pipeline 8 of the supercritical fluid of the fluid intake 3 of screw type fluid circuit, extraction kettle or separation kettle 9 is arranged on the top of water tank 1.
For making the water in the water tank 1 get into the water pump 13 that insulation water cavity 20 needs; Design is than lower slightly position, water tank 1 bottom in the utility model; Between the connecting line of the bottom of water pump 13 and water tank 1, be provided with a tank drains pipeline 22 of being convenient to control water tank 1 draining and one magnetic valve 19 of control draining automatically.
In this system, the filler pipe road 18 of water tank 1, water pump 13 are identical with the pipeline internal diameter with the water velocity of the outlet pipeline 7 of insulation water cavity 20.
Embodiment 2
The heat tracing operation of supercritical extract kettle or separation kettle, rectifying column
The utility model also includes automatic control system, is used to control the opening and closing of water heating system, and the temperature, pump working time, the unlatching of magnetic valve or the time of closing that obtain water tank, and controls accordingly.Through encoder in the digital circuit and decoder the information between each parts is coupled together, described magnetic valve, automatic control system, transfer circuit, encoder and decoder etc. all are prior arts.
Pass through automatic control system; Get into the human-computer interaction interface of " water heating system unlatching ", close " magnetic valve 19 on the discharge pipe line 22 of water tank 1 " and " magnetic valve 19 on the outlet pipeline 7 of insulation water cavity 20 " earlier, open then by " magnetic valve 19 on the filler pipe road 18 of water tank 1 "; When treating to have added the water of 4/5 volume in the water tank; Opening electric heater 2 and water pump 13 are observed the water level in the insulation water cavities 20 through the water level peephole 21 of insulation water cavity 20, when waiting to be incubated water in the water cavity 20 and expiring soon; Open " magnetic valve 19 on the outlet pipeline 7 of insulation water cavity 20 ", close " magnetic valve 19 on the filler pipe road 18 of water tank 1 " simultaneously.When the water temperature in the water tank during, close electric heater 2 than the high 0.5-1 of temperature ℃ of " extraction kettle or separate kettle 9, rectifying column 14 " technological requirement; When the water temperature in the water tank is lower than low 0.5-1 ℃ of temperature that " extraction kettle or separate kettle 9, rectifying column 14 " require, open electric heater 2." from opening the moment of water pump, to open ' 19 ' the preceding needed time of magnetic valve on the outlet pipeline 7 of insulation water cavity 20 ", also can confirm with the volume that is incubated water cavity 20 according to the power of water pump 13.
Embodiment 3
Closing of water heating system
After supercritical extract, separation or rectifying experiment finish; If do not use this equipment at short notice,, get into the human-computer interaction interface of " water heating system is closed " then through automatic control system; Close electric heater 2 and water pump 13; Open " magnetic valve 19 on the discharge pipe line 22 of water tank 1 ", after treating water tank 1 and being incubated the water emptying in the water cavity 20, close all magnetic valves.Like this, can avoid the damaging influence of hot water, also can reduce the generation of the incrustation scale in the water circulation pipe water pump.

Claims (6)

1. novel water heating system that is used for supercritical fluid extraction equipment; Comprise water tank (1), electric heater (2), water temperature control sensor (6) and water pump (13); It is characterized in that: said water pump (13) is set in place on the inlet pipeline (12) of the outside side of water tank (1), is provided with discharge pipe line (22) in water tank (1) bottom.
2. a kind of novel water heating system that is used for supercritical fluid extraction equipment according to claim 1; It is characterized in that: also include insulation water cavity (20); Said insulation water cavity (20) is arranged on the extraction kettle or separates the outer wall of kettle (9) and rectifying column (14), and said inlet pipeline (12) and outlet pipeline (7) are communicated with insulation water cavity (20).
3. a kind of novel water heating system that is used for supercritical fluid extraction equipment according to claim 1 and 2, it is characterized in that: said water tank (1) is provided with filler pipe road (18), and filler pipe road (18) are communicated with water supply line from the beginning.
4. a kind of novel water heating system that is used for supercritical fluid extraction equipment according to claim 3 is characterized in that: on the filler pipe road (18) of outlet pipeline (7), the water tank of insulation water cavity (20) and discharge pipe line (22), be respectively arranged with magnetic valve (19).
5. a kind of novel water heating system that is used for supercritical fluid extraction equipment according to claim 4; It is characterized in that: said discharge pipe line (22) is the triplate line structure with inlet pipeline (12), and magnetic valve (19) is arranged on the discharge ends of discharge pipe line (22).
6. a kind of novel water heating system that is used for supercritical fluid extraction equipment according to claim 1 is characterized in that: between water tank (1) and ground, be provided with bottom fixed mount (23).
CN2012202676778U 2012-06-08 2012-06-08 Novel water heating system for supercritical fluid extraction device Expired - Fee Related CN202605770U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2012202676778U CN202605770U (en) 2012-06-08 2012-06-08 Novel water heating system for supercritical fluid extraction device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2012202676778U CN202605770U (en) 2012-06-08 2012-06-08 Novel water heating system for supercritical fluid extraction device

Publications (1)

Publication Number Publication Date
CN202605770U true CN202605770U (en) 2012-12-19

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN2012202676778U Expired - Fee Related CN202605770U (en) 2012-06-08 2012-06-08 Novel water heating system for supercritical fluid extraction device

Country Status (1)

Country Link
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103920304A (en) * 2014-04-18 2014-07-16 吉首大学 Device for improving safety of leaching workshop and reducing solvent loss

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103920304A (en) * 2014-04-18 2014-07-16 吉首大学 Device for improving safety of leaching workshop and reducing solvent loss
CN103920304B (en) * 2014-04-18 2015-07-22 吉首大学 Device for improving safety of leaching workshop and reducing solvent loss

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C14 Grant of patent or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20121219

Termination date: 20150608

EXPY Termination of patent right or utility model