CN101408372A - Process for drying material by hot pipe and heat pump technology - Google Patents
Process for drying material by hot pipe and heat pump technology Download PDFInfo
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- CN101408372A CN101408372A CNA2007100096574A CN200710009657A CN101408372A CN 101408372 A CN101408372 A CN 101408372A CN A2007100096574 A CNA2007100096574 A CN A2007100096574A CN 200710009657 A CN200710009657 A CN 200710009657A CN 101408372 A CN101408372 A CN 101408372A
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Abstract
The invention discloses a technique for drying materials by adopting heat pipe and heat pump techniques. The technique includes the following steps: 1. a sealed gas-circulation loop used for drying is constructed; 2. a heat pipe and a heat pump system are connected in parallel on the gas-circulation loop; 3. the heat pipe is adopted to pre-heat the gas; 4. the heat pump system is adopted to heat the pre-heated gas and raise the temperature of the gas; 5. the heated gas is adopted to dry materials; 6. the dried materials are received and the gas is purified; and 7. the gas, heat energy and water are recycled for the next 7 circulation steps. The technique adopts the high-efficient heat conductivity of the heat pipe and the temperature-raising technique of the heat pump to heat the gas so as to dry materials; the final product, gas and water can be separated well by the materials dried by the equipment; and the yielding is high and the gas, water and energy can be recycled. The technique has great popularization value and actually realizes high efficiency, energy conservation, non-contamination and sustainable cost saving.
Description
[affiliated technical field]
The present invention relates to a kind of technology of dry materials, particularly a kind of heat pipe and heat pump techniques of utilizing carries out dry technology to field materials such as food, feed, chemical industry, medicine, salt manufacturing, pottery, timber.
[background technology]
At present, processing industries such as food, feed, chemical industry, the medicine equipment that is used for the drying of material is made of a combustion furnace and a spray dryer usually.Its processing technology is very simple, is about to be used for enter spray dryer after dry air or other gas are heated to uniform temperature through combustion furnace, and the material in the spray dryer is carried out drying.The vapours of the dry material particles that is mixing suitable vast scale that finishes is directly discharged, and not only causes heat-energy losses serious, and its combustion furnace produces a large amount of CO
2, SO
2Gas and dry intact vapours of discharging cause severe contamination to environment.
[summary of the invention]
The technical problem to be solved in the present invention is to provide a kind of technology of utilizing heat pipe and heat pump techniques dried material, can realize the recycling of cold water and heat energy, is a kind of technology of efficient, energy-conservation, free of contamination dry materials.
The present invention is achieved in that the technology of utilizing heat pipe and heat pump techniques dried material, comprises the steps:
(1), makes up the airtight gas circulation loop that is used for drying;
(2), the heat pump that the heat pipe of a recovery heat in parallel and heating and condensation are used on gas circulation loop;
(3), utilize heat pipe to the gas preheating in the described gas circulation loop;
(4), the gas heat temperature raising after utilizing heat pump to preheating;
(5), the gas behind the heat temperature raising is carried out dry materials;
(6), receive product, Purge gas;
(7), reclaim gas and heat energy and reclaim moisture content and organic solvent, enter circulation next time.
Gas circulation loop described in the above-mentioned steps (1) is to be connected and composed with wireway by spray dryer, deduster group, blower fan.
Heat pipe and heat pump are connected in parallel on the two ends of described blower fan described in the above-mentioned steps (2), wherein the condenser in the hot junction of the heat pipe connection heat pump is connected to the air inlet of described spray dryer again, and the cold junction of the evaporimeter connection heat pipe in the heat pump is connected to the gas outlet of spray dryer again.
The middle heat pipe of above-mentioned steps (3) is passed to the hot junction with the heat of its cold junction will be to described gas preheating.
Dry materials described in the above-mentioned steps (5) carries out in described spray dryer, and products obtained therefrom is discharged from the discharging opening of spray dryer.
Purge gas described in the above-mentioned steps (6), to reclaim heat energy and moisture content be that the material mixing high temp. gas is discharged by the deduster group on the gas circulation loop that is located between the cold junction of spray dryer and heat pipe in the gas outlet of spray dryer, realizes material, gas cleaning and separation.
Above-mentioned deduster group is made up of three dedusters, in first and second deduster behind dedusting precipitate and separate material and the gas, feed water vapour at last and carry out the coagulating remainder material in the 3rd deduster, and be recovered to a steam trap, described gas then enters the cold junction of heat pipe.
The recovery of gas, heat energy and moisture content is that cold junction that the gas of will discharge in the 3rd deduster is recycled to heat pipe is lowered the temperature and further reclaimed heat and moisture content in the above-mentioned steps (7).
Described moisture content filters the back through filter and collects.Described technology Driven by Solar Energy.
Dry materials technology of the present invention, it utilizes heat pump that gas is heated, and adopts heat pipe as heat transfer element again, for heat energy and moisture content are provided with closed circuit, can realize the recycling of cold water and heat energy.Because heat pipe is to utilize the physical process of Working fluid phase changing to transmit heat, have high thermal conductivity and good isothermal, and possess low noise, dynamical technical advantage, be a kind of enhanced heat transfer component efficiently.Heat pump techniques is the novel energy technology that the whole world receives much attention in recent years, its basic principle is based on contrary Carnot cycle, adopt draw heat in the low-temperature heat source, and it is transferred to high temperature heat source for use, be transferred to heat in the high temperature heat source not only greater than the energy that is consumed, and greater than the energy that from low-temperature heat source, absorbs, under standard condition, the energy of a unit of system consumption, from low-temperature heat source, extract the energy of 0.4～7 unit, lump together the energy of 1.4～8 units of output.In addition, the deduster group is set, the vapours that is mixed with material particles further can be purified, thing vapour is separated, not only improved finished product output but also non-pollution discharge in the gas outlet of spray dryer.Its compared with prior art, the present invention accomplishes very down: energy-conservation, water saving, pollution-free, and can realize truly saving cost for long-term production.
[description of drawings]
The present invention is further illustrated in conjunction with the embodiments with reference to the accompanying drawings.
Fig. 1 is a dry materials process flow diagram of the present invention.
Fig. 2 is a dry materials technological work principle schematic of the present invention.
[specific embodiment]
Please refer to shown in Figure 1ly, dry materials technological process of the present invention comprises the steps: (1), make up and to be used for dry airtight gas circulation loop; (2), the heat pump that the heat pipe of a recovery heat in parallel and heating and condensation are used on gas circulation loop; (3), utilize heat pipe to the gas preheating in the described gas circulation loop; (4), the gas heat temperature raising after utilizing heat pump to preheating; (5), the gas behind the heat temperature raising is carried out dry materials; (6), receive product, Purge gas; (7), reclaim gas and heat energy and reclaim moisture content, enter circulation next time.
Again as shown in Figure 2, be used for making up the present invention and be used for the dry used equipment of airtight gas circulation loop, mainly comprise spray dryer 1, heat pipe 2, heat pump 3, deduster group 4, steam trap 5 and blower fan 6.Described spray dryer 1, deduster group 4, blower fan 6 usefulness conduits connect and compose an airtight air-flow closed circuit, the parallel two ends that are connected air-flow closed circuit fan 2 of described heat pipe and heat pump.
Wherein, described heat pipe 2 comprises cold junction 21 and hot junction 22; Heat can be passed to hot junction 22 from cold junction 21 continuously.Heat pipe in the present embodiment is a separated heat pipe, and promptly hot junction and cold junction are one high and one low splits, and connects with two pipes, is full of working medium in the pipe.When the cold junction of heat pipe is heated (when the temperature difference appears in two ends), the liquid working substance carburation by evaporation that pipe is interior, steam flows to the hot junction and emits heat and condense into liquid and utilize self gravitation to reflux from another root pipe under pressure reduction, so circulation endlessly, heat is able to transmit rapidly along heat pipe.
Wherein, described heat pump 3 can be chosen as one-level as the case may be, and secondary or three grades of heat pumps are the secondary heat pump in this enforcement, comprises one-level, secondary working medium loop 31,32.Its one-level working medium loop 31 is connected and composed by the bloated machine 314 of first evaporimeter 311, first compressor 312, second evaporimeter 321, first condenser 313 and first Peng; Described secondary working medium loop 32 is connected and composed by the bloated machine 324 of second evaporimeter 321, second compressor 322, second condenser 323 and second Peng.One-level working medium loop 31 is raised to a high temperature values with temperature, and behind second evaporimeter 321 and secondary working medium loop 32 heat-shifts, further heat up on the basis of the high temperature values in one-level working medium loop 31 in secondary working medium loop 32, up to finally temperature required; And the temperature reduction behind second evaporimeter 311, second condenser, 323 heat-shifts of the working medium in the I and II working medium loop 31,32 enters next circulation through first condenser 313 and bloated machine 314, the 324 further condensations coolings of first and second Peng again.
Described deduster group 4 is connected to form in turn by first deduster 41, second deduster 42, the 3rd deduster 43 usefulness wireways; Wherein first and second deduster 41,42 includes an air inlet, gas outlet and discharging opening, and described air inlet, gas outlet are respectively equipped with air-supply, air draft mechanism, makes the little negative pressure of the inner generation of deduster, to reduce boiling point, prevents organic solvent blast etc.The structure of the 3rd deduster 43 among the present invention and first deduster 41, second deduster 42 are slightly different, can realize with Venturi tube, comprise an air inlet, gas outlet, air intake and delivery port; It mainly acts on is that high-temperature gas mixture body with after purifying through first and second deduster 41,42 passes to the further dedusting of water vapour.
The concrete annexation of the utility model is: second condenser, 323 1 ends of heat pump 3 are connected with the hot junction 22 of heat pipe 2, and the other end is connected to the air inlet of spray dryer 1; First evaporimeter 311 in the described heat pump 3 links to each other with the cold junction 21 of heat pipe 2.First deduster, 41 air inlets connect the gas outlet of spray dryer 1 in the deduster group 4, and the gas outlet connects the air inlet of second deduster 42; The gas outlet of second deduster 42 connects the air inlet of the 3rd deduster 43; The gas outlet of the 3rd deduster 43 connects the cold junction 21 of heat pipe 2, and air intake connects a steam generator 7 again, and 631 of delivery ports connect a steam trap 5, and the water side of described steam trap 5 also connects a filter 8.
In conjunction with illustrated in figures 1 and 2, its operation principle is again; At first the air of the position at first evaporimeter, 311 places in the heat pump 3 is starting points of whole air-flow closed circuit, its temperature is lower, can reach-10 ℃, under the effect of blower fan 6, air flows to the hot junction 22 of heat pipe 2, the cold junction 21 of heat pipe 2 reaches the 22 pairs of air in hot junction with heat and carries out preheating earlier, and this moment, temperature can reach 50 ℃; Temperature at second condenser 323 after this moment, heat pump 3 heated up through two-stage working medium loop has reached about 200 ℃, arrives at last in the spray dryer 1 material (may be mixed with organic solvent as required) is carried out rapid draing.After drying finishes, overwhelming majority product is directly discharged from the discharging opening of spray dryer 1, and the less mixing of materials high-temperature gas of small part particle enters the air inlet of first deduster 41 from the gas outlet of spray dryer 1, through first deduster, 41 dedusting post precipitations again output part product discharge via discharging opening, remaining mixing of materials high-temperature gas is then entered the further dedusting precipitation of air inlet of second deduster 42 by the gas outlet, in like manner, output part product is discharged via discharging opening again, at this moment, resulting dried material product has reached 99.9%, the mixing of materials high-temperature gas that material content is very low enters the 3rd deduster 43 again from the gas outlet, at this moment, steam generator 1 produces a large amount of water vapours and sprays into from the air intake of the 3rd deduster 43, material in the high-temperature gas mixture body in the 3rd deduster 43 just combines with water vapour rapidly and condenses into water droplet and finally discharge from delivery port, and be collected into steam trap 5, process filter 8 can be collected with recycling after crossing and filtering into clear water, as gets back to steam generator 1 etc.Through the high-temperature gas after 43 dedustings of the 3rd deduster has been the high-temperature gas that does not contain the humidity of material, discharges the cold junction 21 that enters heat pipe 2 from the gas outlet.Its energy is then reached hot junction 32 by the cold junction 21 of heat pipe 2, temperature just descends rapidly, near about 30 ℃, with first evaporimeter 311 of heat pump is that the working medium of low-temperature end-20 ℃ is docked cold and hot exchange, moist high-temperature gas is met condensation and is formed water droplet with dry gas,-20 ℃ working medium is met heat heat is passed to next circulation in first evaporimeter 311 of heat pump, so both can realize energy recovery, the water vapour in the gas (or organic solvent) can be condensed into the water discharge again and collect in the steam trap 5.Reach first evaporimeter 311 of heat pump 3 via the cold air of the cold junction 21 of heat pipe 2, so far finish a circulation.Energy-conservation, water saving, pollution-free that the whole circulation process is really accomplished, and for long-term production, can realize truly saving cost.
Claims (9)
1, a kind of technology of utilizing heat pipe and heat pump techniques dried material is characterized in that: comprise the steps:
(1), makes up the airtight gas circulation loop that is used for drying;
(2), a heat pipe in parallel and heat pump on gas circulation loop;
(3), utilize heat pipe to the gas preheating in the described gas circulation loop;
(4), the gas heat temperature raising after utilizing heat pump to preheating;
(5), the gas behind the heat temperature raising is carried out dry materials;
(6), receive product, Purge gas;
(7), reclaim gas and heat energy and reclaim moisture content, enter circulation next time.
2, the technology of utilizing heat pipe and heat pump techniques dried material according to claim 1 is characterized in that: the gas circulation loop described in the step (1) is to be connected and composed with wireway by spray dryer, deduster group, blower fan.
3, the technology of utilizing heat pipe and heat pump techniques dried material according to claim 2, it is characterized in that: heat pipe and heat pump are connected in parallel on the two ends of described blower fan described in the step (2), wherein the condenser in the hot junction of the heat pipe connection heat pump is connected to the air inlet of described spray dryer again, and the cold junction of the evaporimeter connection heat pipe in the heat pump is connected to the gas outlet of spray dryer again.
4, the technology of utilizing heat pipe and heat pump techniques dried material according to claim 3 is characterized in that: the middle heat pipe of step (3) is passed to the hot junction with the heat of its cold junction will be to described gas preheating.
5, the technology of utilizing heat pipe and heat pump techniques dried material according to claim 1, it is characterized in that: the dry materials described in the step (5) carries out in described spray dryer, and products obtained therefrom is discharged from the discharging opening of spray dryer.
6, the technology of utilizing heat pipe and heat pump techniques dried material according to claim 1, it is characterized in that: Purge gas described in the step (6), to reclaim heat energy and moisture content be that the material mixing high temp. gas is discharged by the deduster group on the gas circulation loop that is located between the cold junction of spray dryer and heat pipe in the gas outlet of spray dryer, realizes the separation of material, gas.
7, the technology of utilizing heat pipe and heat pump techniques dried material according to claim 6, it is characterized in that: described deduster group is made up of three dedusters, in first and second deduster behind dedusting precipitate and separate material and the gas, in the 3rd deduster, feed water vapour at last and carry out the coagulating remainder material, and being recovered to a steam trap, described gas then enters the cold junction of heat pipe.
8, the technology of utilizing heat pipe and heat pump techniques dried material according to claim 1 is characterized in that: the recovery of gas, heat energy and moisture content is that cold junction that the gas of will discharge in the 3rd deduster is recycled to heat pipe is lowered the temperature and further reclaimed heat and moisture content in the step (7).
9, the technology of utilizing heat pipe and heat pump techniques dried material according to claim 1 and 2 is characterized in that: described moisture content filters the back through filter and collects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100096574A CN101408372A (en) | 2007-10-12 | 2007-10-12 | Process for drying material by hot pipe and heat pump technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100096574A CN101408372A (en) | 2007-10-12 | 2007-10-12 | Process for drying material by hot pipe and heat pump technology |
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| Publication Number | Publication Date |
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| CN101408372A true CN101408372A (en) | 2009-04-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007100096574A Pending CN101408372A (en) | 2007-10-12 | 2007-10-12 | Process for drying material by hot pipe and heat pump technology |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103123215A (en) * | 2013-03-11 | 2013-05-29 | 孙应真 | Intelligent hot-air drying control device |
| CN103278000A (en) * | 2013-04-12 | 2013-09-04 | 陕西北人印刷机械有限责任公司 | Drying system based on heat pipe and heat pump and use method of drying system |
| CN104888481A (en) * | 2015-04-27 | 2015-09-09 | 河海大学常州校区 | Waste heat recovery heat pump technology-based energy-efficient spray drying device |
| CN106390495A (en) * | 2016-09-25 | 2017-02-15 | 黄卫东 | Air energy spraying and drying equipment |
| CN106546091A (en) * | 2015-12-24 | 2017-03-29 | 广东展翠食品股份有限公司 | A kind of bergamot fruit drying equipment and its drying meanss |
| CN109157855A (en) * | 2018-09-28 | 2019-01-08 | 朱玲琳 | A kind of novel atomizing drying device |
| CN111473614A (en) * | 2020-04-23 | 2020-07-31 | 安徽欧瑞达电器科技有限公司 | Environment-friendly heat pump dryer |
| CN112629188A (en) * | 2021-01-12 | 2021-04-09 | 桂平市三寻记食品有限公司 | Rice flour cold-hot circulation drying method and system |
| CN115682641A (en) * | 2022-11-01 | 2023-02-03 | 海南优联生态环境有限公司 | Drying machine |
| WO2023083423A1 (en) * | 2021-11-12 | 2023-05-19 | Gea Process Engineering A/S | An efficient heat pump-based heating system with heat recovery |
-
2007
- 2007-10-12 CN CNA2007100096574A patent/CN101408372A/en active Pending
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103123215A (en) * | 2013-03-11 | 2013-05-29 | 孙应真 | Intelligent hot-air drying control device |
| CN103278000A (en) * | 2013-04-12 | 2013-09-04 | 陕西北人印刷机械有限责任公司 | Drying system based on heat pipe and heat pump and use method of drying system |
| CN104888481A (en) * | 2015-04-27 | 2015-09-09 | 河海大学常州校区 | Waste heat recovery heat pump technology-based energy-efficient spray drying device |
| CN106546091A (en) * | 2015-12-24 | 2017-03-29 | 广东展翠食品股份有限公司 | A kind of bergamot fruit drying equipment and its drying meanss |
| CN106390495A (en) * | 2016-09-25 | 2017-02-15 | 黄卫东 | Air energy spraying and drying equipment |
| CN106390495B (en) * | 2016-09-25 | 2018-06-29 | 黄卫东 | A kind of air energy spray drying device |
| CN109157855A (en) * | 2018-09-28 | 2019-01-08 | 朱玲琳 | A kind of novel atomizing drying device |
| CN109157855B (en) * | 2018-09-28 | 2021-07-02 | 朱玲琳 | Spray drying device |
| CN111473614A (en) * | 2020-04-23 | 2020-07-31 | 安徽欧瑞达电器科技有限公司 | Environment-friendly heat pump dryer |
| CN111473614B (en) * | 2020-04-23 | 2020-11-10 | 安徽欧瑞达电器科技有限公司 | Environment-friendly heat pump dryer |
| CN112629188A (en) * | 2021-01-12 | 2021-04-09 | 桂平市三寻记食品有限公司 | Rice flour cold-hot circulation drying method and system |
| CN112629188B (en) * | 2021-01-12 | 2022-04-15 | 桂平市三寻记食品有限公司 | Rice flour cold-hot circulation drying method and system |
| WO2023083423A1 (en) * | 2021-11-12 | 2023-05-19 | Gea Process Engineering A/S | An efficient heat pump-based heating system with heat recovery |
| CN115682641A (en) * | 2022-11-01 | 2023-02-03 | 海南优联生态环境有限公司 | Drying machine |
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Open date: 20090415 |