CN101865622A - Long-distance waste heat recovery system of drying tail gas - Google Patents
Long-distance waste heat recovery system of drying tail gas Download PDFInfo
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- CN101865622A CN101865622A CN201010225079A CN201010225079A CN101865622A CN 101865622 A CN101865622 A CN 101865622A CN 201010225079 A CN201010225079 A CN 201010225079A CN 201010225079 A CN201010225079 A CN 201010225079A CN 101865622 A CN101865622 A CN 101865622A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Abstract
The invention relates to a long-distance waste heat recovery system of drying tail gas, which can effectively recover the waste heat of drier tail gas and transmit heat to a required node to preheat fresh air with lower energy consumption, and the preheated fresh air returns to a drying system to dry the material, therefore, the waste heat recycle is realized. The long-distance waste heat recovery system comprises a drying equipment tail gas heat source, wherein the heat source is connected with at least one first-level oscillatory flow heat pipe, the oscillatory flow heat pipe heats a heat carrier in a long-distance conveyer device, a plurality of second-level oscillatory flow heat pipes for acquiring heat energy are arranged on the long-distance conveyer device, and a control device is arranged on the long-distance conveyer device.
Description
Technical field
The present invention relates to a kind of length apart from heat recovery technology, be particularly useful for the using waste heat from tail gas of drying machine, the long-distance waste heat recovery system of drying tail gas that after long distance is carried, utilizes again.
Background technology
Nearly all industry at present all be unable to do without drying process, and drying is a sizable unit in the industrial consumption energy, and 14% of developed country's industrial consumption energy is used to drying, and the drying of some industry consumes energy even accounts for and produces 35% of power consumption.The tail gas of drying equipment carries a large amount of waste heats, therefore effectively utilizes the energy, reduces the adverse effect to environment, is the inexorable trend of drying operation innovation, development.
Dried tail gas waste heat in hot blast, the superheat steam drying technology reclaims the new drying medium of back heating, but the drying machine tail gas emission point in some dry run such as tunnel cave formula drying, the spray-drying reaches tens meters even rice up to a hundred with new wind access point distance, waste heat emission point and heat demand nodal distance are far away, because this drying process drying medium consumption is big, can reach 5 ~ 100,000 m as hot blast rate in some dry run
3/ h if adopt common waste heat reclaiming process, then need be provided with bulky pipeline induction system, and it is big that thermal medium wasted work amount is taken in conveying simultaneously, and some dry field condition is not suitable for installing the big large-scale pipeline induction system of this floor space especially; If adopt king-size oscillating flow heat pipe heat exchanger, heat transmission attenuation rate height, the heat exchanger steel quantity consumption is big, the initial cost height, so this part waste heat is fully reclaimed as yet.
Though this part waste heat taste is lower, but overall heat is very big, for further reducing dry power consumption, advance energy-saving and emission-reduction, realizing good recycling economy, adopt heat transmission equipment efficiently, good transmission technology, in this drying process waste heat recovery utilize again and be necessary.
Summary of the invention
Purpose of the present invention is exactly in order to address the above problem, the long-distance waste heat recovery system of drying tail gas that provides a kind of novel distance grown to carry, it can reclaim the drying machine tail gas waste heat effectively, and with lower energy consumption with heat delivery to the new wind of demand nodes preheating, new wind after preheating is got back to the drying system dried material, realizes that waste heat utilizes again.
For achieving the above object, the present invention adopts following technical scheme:
A kind of long-distance waste heat recovery system of drying tail gas, it comprises drying equipment tail gas thermal source, this thermal source is connected with at least one one-level oscillating flow heat pipe; This oscillating flow heat pipe heating is grown apart from the heat carrier in the conveying device, is provided with the secondary oscillating flow heat pipe that several are used to obtain heat energy on growing apart from conveying device; With duration apart from then being provided with control device on the conveying device.
Described length comprises circulating pump apart from conveying device, and its end is connected with expansion slot, and the other end then is connected with long-distance transmission pipeline, is provided with control device on long-distance transmission pipeline.
Described control device comprises one group of valve and one group of sensor; Wherein the one-level oscillating flow heat pipe is in parallel with control valve IV, is provided with a temperature sensor on the long-distance transmission pipeline of one-level oscillating flow heat pipe outlet; On the long-distance transmission pipeline at pump entry place, be provided with control valve I, control valve I and the control valve II that connects, bypass strainer and control valve III parallel connection, this place also is provided with a temperature sensor simultaneously.
The evaporator section of described one-level oscillating flow heat pipe is connected with thermal source, and condensation segment is connected with heat carrier, is the adiabatic section between evaporator section and condensation segment.
The evaporator section of described secondary oscillating flow heat pipe is connected with the new wind that needs heating; Condensation segment is connected with heat carrier, is the adiabatic section between evaporator section and condensation segment.
The present invention is provided with an oscillating flow heat pipe heat exchanger at waste heat emission point place, the flow through evaporator section of oscillating flow heat pipe heat exchanger of drying machine tail gas, the exchanger heat intraductal working medium conducts heat by pulsation heat is transferred to condensation segment, the conduction oil condensation segment of under the effect of pump merit, flowing through, conduction oil absorbs heat, temperature increase; Under the circulating pump effect, the long distance of conduction oil is delivered to the heat demand node place in the process system; And then through secondary oscillating flow heat pipe heat exchanger, conduction oil enters the evaporator section of heat exchanger, and heat discharges the back by the new wind medium recurrence drying system of pulsating heat pipe with the heat transferred condensation side, and waste heat obtains cycling and reutilization in native system.
The invention has the advantages that, system flexibly, little, the heat length of taking up room is apart from less energy consumption in the course of conveying, heat loss is little, is specially adapted to that hot blast consumptions such as spray-drying or tunnel cave formula drying are big, drying machine tail gas emission point and new wind medium access point distance drying process far away.Adopt this novel length apart from the conveying-type waste heat reclaiming process, can reduce to lay in the common exhaust heat recovering method drawback of bulky fresh air pipeline system, reduce the electric energy that long distance carries new wind to consume, reduce the heat loss in the heat delivery process.Oscillating flow heat pipe exchanger heat efficient height, all temperature characteristics is good, the heat transfer direction is reversible, volume is little, thermal response rapidly but also have easy for installation, easy to maintenance, long service life, drag losses little, advance the air draft runner and advantage such as be convenient to separate, do not leak through with each other; Conduction oil is a kind of transmission medium of heat, has homogeneous heating, temperature adjustment control temperature accurately, can produce high temperature under low-steam pressure, heat-transfer effect is good, and is nonflammable, thermal capacity is big, carry advantages such as energy-conservation, easy to operate, can in wideer temperature range, satisfy the process requirements of different temperatures heating, cooling.
Description of drawings
Fig. 1 utilizes a kind of process chart of growing apart from heat recovery.
Among Fig. 1: 1-evaporator section, 2-adiabatic section, 3-condensation segment, 4-circulating pump, 5-control valve I, 6-control valve II, 7-control valve III, 8-bypass strainer, 9-temperature sensor, 10-control valve IV, 11-expansion slot, 12. one-level oscillating flow heat pipes, 13. secondary oscillating flow heat pipes.
The specific embodiment
The present invention will be further described below in conjunction with accompanying drawing.
At first the flow through evaporator section 1 of one-level oscillating flow heat pipe 12 of the waste heat of drying machine tail gas, heat is passed to the condensation segment 3 of adiabatic section 2 other ends by pulsating heat pipe, flow out the exhaust gas evacuation of evaporator section, the heat pipe of evaporator section 3 is with the heat transferred conduction oil, after heating up, conduction oil under the effect of circulating pump 4, is delivered to the evaporator section 1 of secondary oscillating flow heat pipe 13 through long distance, the conduction oil release heat is passed to the condensation segment 3 of secondary oscillating flow heat pipe 13 by pulsating heat pipe, the heat pipe of condensation segment 3 is with the new wind of heat transferred, new wind after the heating returns drying process, realizes that in native system waste heat recovery utilizes again.
In the heat distance transmission system, heat carrier adopts conduction oil, and control valve II6 and control valve III7 close during the system operate as normal, and control valve I5 opens; Regular closed control valve I5, opening controlling valve II6 and control valve III7, conduction oil is by bypass line, 8 pairs of conduction oil filter cleanings of bypass strainer; Be provided with temperature sensor 9 in the transmission system, monitor the oil temperature that one-level oscillating flow heat pipe 12 is imported and exported in real time, when oily temperature exceeded limit value, opening controlling valve IV10 part conduction oil circulated by bypass line; During normal the operation, the conduction oil liquid level of expansion slot 11 should remain on about 2/3 to 3/4.
Should start circulating pump 4 earlier during driving; Stop heating during parking earlier, 4 operations of circulating pump just can stop circulating pump 4 when the conduction oil temperature drops to below 100 ℃.
Claims (5)
1. a long-distance waste heat recovery system of drying tail gas is characterized in that, it comprises drying equipment tail gas thermal source, and this thermal source is connected with at least one one-level oscillating flow heat pipe; This oscillating flow heat pipe heating is grown apart from the heat carrier in the conveying device, is provided with the secondary oscillating flow heat pipe that several are used to obtain heat energy on growing apart from conveying device; With duration apart from then being provided with control device on the conveying device.
2. long-distance waste heat recovery system of drying tail gas as claimed in claim 1, it is characterized in that described length comprises circulating pump apart from conveying device, its end is connected with expansion slot, the other end then is connected with long-distance transmission pipeline, is provided with control device on long-distance transmission pipeline.
3. long-distance waste heat recovery system of drying tail gas as claimed in claim 1 or 2 is characterized in that, described control device comprises one group of valve and one group of sensor; Wherein the one-level oscillating flow heat pipe is in parallel with control valve IV, is provided with a temperature sensor on the long-distance transmission pipeline of one-level oscillating flow heat pipe outlet; On the long-distance transmission pipeline at pump entry place, be provided with control valve I, control valve I and the control valve II that connects, bypass strainer and control valve III parallel connection, this place also is provided with a temperature sensor simultaneously.
4. long-distance waste heat recovery system of drying tail gas as claimed in claim 1 is characterized in that the evaporator section of described one-level oscillating flow heat pipe is connected with thermal source, and condensation segment is connected with heat carrier, is the adiabatic section between evaporator section and condensation segment.
5. long-distance waste heat recovery system of drying tail gas as claimed in claim 1 is characterized in that, the evaporator section of described secondary oscillating flow heat pipe is connected with the new wind that needs heating; Condensation segment is connected with heat carrier, is the adiabatic section between evaporator section and condensation segment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010225079XA CN101865622B (en) | 2010-07-13 | 2010-07-13 | Long-distance waste heat recovery system of drying tail gas |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010225079XA CN101865622B (en) | 2010-07-13 | 2010-07-13 | Long-distance waste heat recovery system of drying tail gas |
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| CN101865622A true CN101865622A (en) | 2010-10-20 |
| CN101865622B CN101865622B (en) | 2011-06-01 |
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| CN201010225079XA Active CN101865622B (en) | 2010-07-13 | 2010-07-13 | Long-distance waste heat recovery system of drying tail gas |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103322831A (en) * | 2013-06-18 | 2013-09-25 | 重庆海洲化学品有限公司 | Method for producing hot gas by using conduction oil waste heat |
| CN103344140A (en) * | 2013-06-26 | 2013-10-09 | 山东荷能节能环保科技有限公司 | Device and method for exhaust steam waste heat recovery and pollution abatement in aluminum oxide production |
| CN103398566A (en) * | 2013-08-21 | 2013-11-20 | 湖南科技大学 | Spiral-flow type heat pump dryer |
| CN106225432A (en) * | 2016-08-30 | 2016-12-14 | 广州皇上皇集团股份有限公司 | A kind of drying room and utilize the method that this drying room carries out being dehydrated |
| CN106500528A (en) * | 2016-12-30 | 2017-03-15 | 广东申菱环境系统股份有限公司 | A kind of finned heat exchanger of step heat discoloration |
| CN107606878A (en) * | 2017-10-25 | 2018-01-19 | 天津宜诺医药工业设计有限公司 | Recirculating fluidized bed and circulating fluidized bed system |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1916546A (en) * | 2006-09-06 | 2007-02-21 | 山东天力干燥设备有限公司 | Air preheater of oscillatory flow type heat pipe, and energy saving drying technique of using the preheater |
-
2010
- 2010-07-13 CN CN201010225079XA patent/CN101865622B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1916546A (en) * | 2006-09-06 | 2007-02-21 | 山东天力干燥设备有限公司 | Air preheater of oscillatory flow type heat pipe, and energy saving drying technique of using the preheater |
Non-Patent Citations (2)
| Title |
|---|
| 《盐业与化工》 20100531 柴本银，李选友，马训强，周慎杰，彭丽华，张庆磊 热管换热器在精制盐干燥系统余热回收中的实验研究 36-39 第39卷, 第3期 * |
| 《石油和化工设备》 20091231 柴本银，彭丽华，李选友，周慎杰，史勇春 干燥过程节能技术的研究与新进展 8-11 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103322831A (en) * | 2013-06-18 | 2013-09-25 | 重庆海洲化学品有限公司 | Method for producing hot gas by using conduction oil waste heat |
| CN103344140A (en) * | 2013-06-26 | 2013-10-09 | 山东荷能节能环保科技有限公司 | Device and method for exhaust steam waste heat recovery and pollution abatement in aluminum oxide production |
| CN103398566A (en) * | 2013-08-21 | 2013-11-20 | 湖南科技大学 | Spiral-flow type heat pump dryer |
| CN103398566B (en) * | 2013-08-21 | 2015-06-24 | 湖南科技大学 | Spiral-flow type heat pump dryer |
| CN106225432A (en) * | 2016-08-30 | 2016-12-14 | 广州皇上皇集团股份有限公司 | A kind of drying room and utilize the method that this drying room carries out being dehydrated |
| CN106500528A (en) * | 2016-12-30 | 2017-03-15 | 广东申菱环境系统股份有限公司 | A kind of finned heat exchanger of step heat discoloration |
| CN107606878A (en) * | 2017-10-25 | 2018-01-19 | 天津宜诺医药工业设计有限公司 | Recirculating fluidized bed and circulating fluidized bed system |
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| CN101865622B (en) | 2011-06-01 |
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