CN103994603A - Chemical heat pump device assisted by ultrasonic radiation - Google Patents
Chemical heat pump device assisted by ultrasonic radiation Download PDFInfo
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- CN103994603A CN103994603A CN201410259645.7A CN201410259645A CN103994603A CN 103994603 A CN103994603 A CN 103994603A CN 201410259645 A CN201410259645 A CN 201410259645A CN 103994603 A CN103994603 A CN 103994603A
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Abstract
Provided is a chemical heat pump device assisted by ultrasonic radiation. An ultrasonic probe is inserted into liquid reactants stored in a reboiler, and the ultrasonic probe is connected to an ultrasonic generator through an energy converter; liquid in the reboiler generates a chemical reaction after absorbing waste heat under the action of ultrasonic waves, reaction products are evaporated into a rectifying tower, the reactants and the products are separated in the rectifying tower, the products obtained in an overhead condenser are heated up through a heat regenerator and then enter an exothermic reactor, after a balanced reaction conversion rate is reached and reaction heat is released, the products are cooled in the heat regenerator and then return to the rectifying tower, the reactants and the products are separated again, and circulation of the chemical heat pump device is achieved; cold fluid recycles reaction heat through heat exchange tubes arranged in the exothermic reactor, and therefore heat energy transfer from low temperature to medium temperature is achieved.
Description
Technical field
The present invention relates to the auxiliary chemical heat pump device of a kind of Ultrasonic Radiation, can be used for low temperature exhaust heat and recycle.
Background technology
Along with the fast development of China's economy, the problem of environmental pollution producing in energy shortage and using energy source process highlights day by day.And in industrial processes, a large amount of low temperature exhaust heats that are less than 100 ℃, as low-temperature flue gas and condensed water etc., but can not be utilized and waste.Therefore, the recycling of reinforcement low temperature exhaust heat is important channel and the effective means that improves efficiency of energy utilization, energy-saving and emission-reduction.Heat pump is a kind of low-grade heat source that utilizes, and realizes by heat the circulatory system from low-temperature heat source to high temperature heat source pumping, can promote waste heat grade, the high-grade heat energy that output is more easily utilized.Chemical heat pump is to utilize a pair of reversible suction/heat-producing chemical reaction, form recovery by the heat energy of low-grade heat source with chemical energy stores, then under higher temperature, discharge for heat supply, refrigeration, dry and generating etc., the grade that realizes energy promotes and utilizes.Chemical heat pump has that temperature accommodation is wide, temperature increase ability is high, possess the advantages such as energy storage function, is specially adapted to intermittence and unstability cryogenic waste heat resource deep exploitation, has broad prospect of application.
Prevost and Bugarel (International Seminar on Thermochemical Energy Storage, Stockholm1980,95-111) a kind of isopropyl alcohol/acetone/hydrogen-chemical heat pump (isopropanol-acetone-hydrogen chemical heat pump, IAH-CHP) has been proposed.In this system, the heat generation dehydrogenation reaction that gas phase isopropyl alcohol absorbs the low temperature exhaust heat of 90 ℃ in the endothermic reaction device of loading catalyst generates acetone and hydrogen, after reaction, enter rectifying column, tower bottom reboiler absorbs equally low temperature exhaust heat and drives rectifying column that product and unreacted isopropyl alcohol are carried out to separation, tower bottom product isopropyl alcohol returns to endothermic reaction device through pump, overhead product acetone and hydrogen flow out after compressor compression and regenerator intensification and enter exothermic reactor from condenser, acetone and the hydrogen generation isopropyl alcohol that reacts under the high temperature of 180-220 ℃ in exothermic reactor, product returns to rectifying column after regenerator.In endothermic reaction device and tower bottom of rectifying tower reboiler, input low temperature exhaust heat, and the heat of high temperature producing is recovered utilization in exothermic reactor.
(the International Journal of Energy Research1987 such as Saito, 11,549-558) propose to utilize the propyl alcohol/acetone/hydrogen-chemical heat pump of isopropyl alcohol liquid phase dehydrogenation, remove gas phase endothermic reaction device in above system, at tower bottom reboiler, carry out the low-temperature heat quantity of 80 ℃ of liquid phase dehydrogenation of isopropanol reactive absorptions, use mechanical agitation that catalyst and liquid phase reactor thing are mixed.Can the low temperature exhaust heat of approximately 80 ℃ be promoted to the highest 220 ℃.
In above known technology, topmost technological deficiency is: under approximately 80 ℃ of conditions, use mechanical agitator liquid phase dehydrogenation of isopropanol reaction rate lower, and the acetone and the hydrogen that produce are easily adsorbed on catalyst surface, hindered the carrying out of reaction, further reduce reaction rate.System thermal efficiency is lower.
Summary of the invention
The object of this invention is to provide the auxiliary chemical heat pump device of a kind of Ultrasonic Radiation, to improve the defect existing in known technology.
For achieving the above object, the auxiliary chemical heat pump device of Ultrasonic Radiation provided by the invention:
In the liquid reactant of depositing in reboiler, insert ultrasonic probe, ultrasonic probe connects supersonic generator by transducer;
After liquid absorption waste heat in reboiler, in hyperacoustic effect, issue biochemical reaction, product is evaporated to rectifying column, in rectifying column, reactant obtains separated with product, the product obtaining in overhead condenser enters exothermic reactor after regenerator heats up, after reaching balanced reaction conversion ratio release reaction heat, in regenerator, after cooling, get back to rectifying column, isolate reactant and product, realize the circulation of chemical heat pump device again;
Cold fluid is recycled reaction heat by the built-in heat exchanger tube of exothermic reactor, thus realize heat from low temperature to warm can transfer.
The chemical heat pump device that described Ultrasonic Radiation is auxiliary, wherein, the ultrasonic frequency of supersonic generator is 20kHz, the power density acting in the reactant in reboiler is greater than 0.1W/ml.
The chemical heat pump device that described Ultrasonic Radiation is auxiliary, wherein, reactant is isopropyl alcohol, product is acetone and hydrogen; Or reactant is the tert-butyl alcohol, product is ethene and water.
The chemical heat pump device that described Ultrasonic Radiation is auxiliary, wherein, the waste heat supply temperature of the liquid absorption in reboiler is 70-80 ℃.
The invention has the beneficial effects as follows:
A, the present invention adopt Ultrasonic Radiation to increase substantially isopropyl alcohol endothermic reaction conversion ratio under low temperature (being less than 80 ℃);
The endothermic reaction conversion ratio that b, the present invention adopt Ultrasonic Radiation to improve can be offset and be produced the required power of ultrasonic wave, can improve chemical heat pump system thermal efficiency;
C, the present invention adopt Ultrasonic Radiation to compare mechanical agitation and still guarantee that 70 ℃ of left and right dehydrogenation of isopropanol has higher reaction rate, compare general chemistry heat pump and can be suitable for the more residual heat resources of low temperature;
The heat energy of d, the present invention output can be directly used in heat supply, refrigeration, dry etc., meets different hot users' demand;
E, the present invention, except using isopropyl alcohol/acetone/hydrogen reaction system, also can use the tert-butyl alcohol/ethene/water reaction system.
Accompanying drawing explanation
Fig. 1 is device schematic diagram of the present invention.
The specific embodiment
Device of the present invention, except using isopropyl alcohol/acetone/hydrogen system, also can be used the tert-butyl alcohol/ethene/water reaction system.Below to be that example describes with isopropyl alcohol/acetone/hydrogen
Refer to Fig. 1.Liquid isopropyl alcohol leaves in the reboiler 1 of tower reactor, inserts ultrasonic probe 2 in liquid isopropyl alcohol, and the ultrasonic wave that supersonic generator 4 sends ultrasonic probe 2 in inserting liquid after transducer 3 is applied in the reactant liquid isopropyl alcohol in reboiler.The ultrasonic frequency that supersonic generator produces is 20kHz, acts on the power density in liquid in the reboiler ratio of liquid volume (ultrasonic power with) and should be greater than 0.1W/ml.
Isopropyl alcohol in reboiler absorbs the effect at Ultrasonic Radiation after the low temperature exhaust heat of 70-80 ℃ and issues biochemical reaction, product (acetone and hydrogen) and part isopropyl alcohol are evaporated to rectifying column 5, at the interior isopropyl alcohol of rectifying column 5, obtain separated with product (acetone and hydrogen), in overhead condenser 6, obtain purer acetone and hydrogen, through compressor 7, provide after power, again after regenerator 8 heats up, enter exothermic reactor 9, reach after balanced reaction conversion ratio release reaction heat, acetone and hydrogen are got back to rectifying column 4 after lowering the temperature in regenerator 8, isopropyl alcohol again with acetone/Hydrogen Separation, realize the circulation of chemical heat pump device.Cold fluid is recycled the reaction heat of 180-220 ℃ by the built-in heat exchanger tube of exothermic reactor 9, thus realize heat from low-temperature solar energy to warm can transfer.
Claims (4)
1. the chemical heat pump device that Ultrasonic Radiation is auxiliary:
In the liquid reactant of depositing in reboiler, insert ultrasonic probe, ultrasonic probe connects supersonic generator by transducer;
After liquid absorption waste heat in reboiler, in hyperacoustic effect, issue biochemical reaction, product is evaporated to rectifying column, in rectifying column, reactant obtains separated with product, the product obtaining in overhead condenser enters exothermic reactor after regenerator heats up, after reaching balanced reaction conversion ratio release reaction heat, in regenerator, after cooling, get back to rectifying column, isolate reactant and product, realize the circulation of chemical heat pump device again;
Cold fluid is recycled reaction heat by the built-in heat exchanger tube of exothermic reactor, thus realize heat from low temperature to warm can transfer.
2. the auxiliary chemical heat pump device of Ultrasonic Radiation according to claim 1, wherein, the ultrasonic frequency of supersonic generator is 20kHz, acts on the power density in reactant in reboiler and is greater than 0.1W/ml.
3. the auxiliary chemical heat pump device of Ultrasonic Radiation according to claim 1, wherein, reactant is isopropyl alcohol, product is acetone and hydrogen; Or reactant is the tert-butyl alcohol, product is ethene and water.
4. the auxiliary chemical heat pump device of Ultrasonic Radiation according to claim 1, wherein, the waste heat supply temperature of the liquid absorption in reboiler is 70-80 ℃.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410259645.7A CN103994603A (en) | 2014-06-12 | 2014-06-12 | Chemical heat pump device assisted by ultrasonic radiation |
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| CN201410259645.7A CN103994603A (en) | 2014-06-12 | 2014-06-12 | Chemical heat pump device assisted by ultrasonic radiation |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107514837A (en) * | 2017-09-04 | 2017-12-26 | 中国科学院工程热物理研究所 | The cooling heating and power generation system that heat pump couples with supercritical carbon dioxide Brayton cycle |
| CN107621096A (en) * | 2017-09-15 | 2018-01-23 | 中国科学院工程热物理研究所 | A kind of chemical heat pump system for the recovery of low temperature exhaust heat depth |
| US9885002B2 (en) | 2016-04-29 | 2018-02-06 | Emerson Climate Technologies, Inc. | Carbon dioxide co-fluid |
| US11333412B2 (en) | 2019-03-07 | 2022-05-17 | Emerson Climate Technologies, Inc. | Climate-control system with absorption chiller |
| CN115212698A (en) * | 2022-07-06 | 2022-10-21 | 中国石油大学(华东) | Supergravity regeneration system for promoting reboiling by ultrasonic waves |
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| JPH1137596A (en) * | 1997-07-18 | 1999-02-12 | Chubu Electric Power Co Inc | Chemical heat pump |
| KR20080007284A (en) * | 2006-07-15 | 2008-01-18 | 박상현 | Waste water heat recycle system |
| CN102287954A (en) * | 2011-06-23 | 2011-12-21 | 江苏河海新能源有限公司 | Dissolving heat absorption type chemical heat pump and heating or refrigerating method thereof |
| CN103566613A (en) * | 2012-08-06 | 2014-02-12 | 南通醋酸纤维有限公司 | Rectification device and process for low-concentration organic solvent aqueous liquor recycling heat pump |
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2014
- 2014-06-12 CN CN201410259645.7A patent/CN103994603A/en active Pending
Patent Citations (5)
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| JPH1137596A (en) * | 1997-07-18 | 1999-02-12 | Chubu Electric Power Co Inc | Chemical heat pump |
| KR20080007284A (en) * | 2006-07-15 | 2008-01-18 | 박상현 | Waste water heat recycle system |
| CN102287954A (en) * | 2011-06-23 | 2011-12-21 | 江苏河海新能源有限公司 | Dissolving heat absorption type chemical heat pump and heating or refrigerating method thereof |
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Non-Patent Citations (2)
| Title |
|---|
| FANG XIN，MIN XU，XIULAN HUAI，XUNFENG LI: "Study on isopropanol-acetone-hydrogen chemical heat pump:Liquid phase dehydrogenation of isopropanol using a reactive distillation column", 《APPLIED THERMAL ENGINEERING》, 30 September 2013 (2013-09-30) * |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9885002B2 (en) | 2016-04-29 | 2018-02-06 | Emerson Climate Technologies, Inc. | Carbon dioxide co-fluid |
| CN107514837A (en) * | 2017-09-04 | 2017-12-26 | 中国科学院工程热物理研究所 | The cooling heating and power generation system that heat pump couples with supercritical carbon dioxide Brayton cycle |
| CN107621096A (en) * | 2017-09-15 | 2018-01-23 | 中国科学院工程热物理研究所 | A kind of chemical heat pump system for the recovery of low temperature exhaust heat depth |
| US11333412B2 (en) | 2019-03-07 | 2022-05-17 | Emerson Climate Technologies, Inc. | Climate-control system with absorption chiller |
| CN115212698A (en) * | 2022-07-06 | 2022-10-21 | 中国石油大学(华东) | Supergravity regeneration system for promoting reboiling by ultrasonic waves |
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Application publication date: 20140820 |