CN104649559B - Utilize the low temperature belt-type drying device of fume afterheat - Google Patents

Utilize the low temperature belt-type drying device of fume afterheat Download PDF

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Publication number
CN104649559B
CN104649559B CN201310590079.3A CN201310590079A CN104649559B CN 104649559 B CN104649559 B CN 104649559B CN 201310590079 A CN201310590079 A CN 201310590079A CN 104649559 B CN104649559 B CN 104649559B
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heat
low temperature
type drying
exchanger
temperature belt
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CN104649559A (en
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钱学略
屈鹏飞
刘茂玲
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Shanghai Fubo Environmental Protection Equipment Co., Ltd.
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Holt Thermal Energy Technology (jiangsu) Co Ltd
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    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F11/00Treatment of sludge; Devices therefor
    • C02F11/12Treatment of sludge; Devices therefor by de-watering, drying or thickening
    • C02F11/16Treatment of sludge; Devices therefor by de-watering, drying or thickening using drying or composting beds

Abstract

The present invention provides a kind of low temperature belt-type drying device utilizing fume afterheat, comprise boiler body, low temperature belt-type drying machine, also comprise inlet pipe, partition formula phase-change heat-exchanger, direct type flue gas waste heat recovery apparatus and airheater, described partition formula phase-change heat-exchanger comprises endotherm section and heat release section, the heat release section of described partition formula phase-change heat-exchanger, direct type flue gas waste heat recovery apparatus and airheater are connected in turn on circulation line, circulation line is provided with heat-transfer medium, circulation line is provided with recycle pump, described inlet pipe is connected with the inlet mouth of airheater, the air outlet of airheater is connected with low temperature belt-type drying machine, described direct type flue gas waste heat recovery apparatus and partition formula phase-change heat-exchanger endotherm section are arranged in discharge flue. the present invention makes fume afterheat be utilized to a greater extent, and the wall temperature of partition formula phase-change heat-exchanger endotherm section can be regulated by the present invention, avoids the low temperature corrosion of partition formula phase-change heat-exchanger.

Description

Utilize the low temperature belt-type drying device of fume afterheat
Technical field
The present invention relates to mummification field, particularly relate to a kind of device utilizing the fume afterheats such as incinerator, coal and oil boiler, process furnace to make the mummification such as mud, fire coal, biomass fuel.
Background technology
Along with improving constantly of the level of urbanization, sewage treatment facility construction obtains high speed development, but the construction of Sewage Plant and operation produce with a large amount of excess sludges, environment is caused very big impact containing a large amount of pollutents by these mud, so effective and stable lignin-sludge has become an important problem.
What extensively promoted at present is that mud is carried out drying and other treatment by the mode utilizing heat drying technique to combine with UTILIZATION OF VESIDUAL HEAT IN. Utilize the difference of form that heat drying can be divided into direct type heat drying and indirect type heat drying according to heat. Direct type heat drying is that high-temperature flue gas is directly introduced moisture eliminator, carries out heat exchange mummification by contact, the convection current of flue gas and mud. The feature of this kind of way is the efficiency height that heat utilizes, but continue because of high-temperature flue gas to enter low temperature belt-type drying machine, therefore there is the useless flue gas directly contacted could must discharge after special processing with mud, and the latent heat of dried using waste heat from tail gas and water vapour is not utilized effectively, thermo-efficiency is low. Meanwhile, flue gas directly contacts with mud and the heavy metal component in flue gas can be made to penetrate in mud, thus cause the follow-up cost of disposal of mud to raise, and drying equipment is also had certain corrosive nature by the acidic substance (such as acid dew etc.) existed in flue gas, this will inevitably affect the work-ing life of drying equipment. Indirect type heat drying be by the heat of high-temperature flue gas by heat exchanger, pass to certain medium, these media can be thermal oil, steam or air etc. Medium circulates in a closed loop, does not contact with by the material of mummification, after heat is partly utilized, and flue gas normal discharge.
Name is called the Chinese patent CN1686879A of " the tandem sludge drying system utilizing remaining heat of flue gas from steam power plant ", disclose one and directly utilize smoke contacts formula drying sludge system, flue gas dewatered sludge technology is wherein directly utilized to be directly mix flue gas with wet mud to contact dewatered sludge in revolution drying kiln, the utilising efficiency of its energy is higher beyond doubt, but its shortcoming is also apparent as previously mentioned, there were a large amount of flue gases directly contacted could must discharge after special processing with mud, this will inevitably improve processing costs, and drying equipment is also had certain corrosive nature by the acidic substance that may exist in flue gas, have impact on the work-ing life of drying equipment.
Can reaching a conclusion in sum: direct heating mode is more single because of required energy source type, be subject to a definite limitation, wherein the exhaust gas volumn of coal furnace, incinerator is big, there is again acid attack material, more difficult use; Indirect heating mode can use the various different energy, such as flue gas, fire coal, Sweet natural gas etc., but can corrode the equipment with smoke contacts owing to flue-gas temperature is lower. So, how the limitation of comprehensive above sludge drying technique, can ensure the permanent use of equipment, utilization rate of waste heat low can be avoided again to be a problem demanding prompt solution when sludge drying.
Summary of the invention
The technical problem to be solved in the present invention is that providing a kind of improves utilization rate of waste heat, and ensures the low temperature belt-type drying device utilizing fume afterheat in the work-ing life of equipment, to overcome the above-mentioned defect of prior art.
In order to solve the problems of the technologies described above, the present invention adopts the first technical scheme:
A kind of low temperature belt-type drying device utilizing fume afterheat, comprise boiler body, low temperature belt-type drying machine, also comprise inlet pipe, partition formula phase-change heat-exchanger, direct type flue gas waste heat recovery apparatus and airheater, described partition formula phase-change heat-exchanger comprises endotherm section and heat release section, the heat release section of described partition formula phase-change heat-exchanger, direct type flue gas waste heat recovery apparatus and airheater are connected in turn on circulation line, circulation line is provided with heat-transfer medium, circulation line is provided with recycle pump, described inlet pipe is connected with the inlet mouth of airheater, the air outlet of airheater is connected with low temperature belt-type drying machine, described direct type flue gas waste heat recovery apparatus and partition formula phase-change heat-exchanger endotherm section are arranged in discharge flue.
Preferably, the venting port of described low temperature belt-type drying machine is connected with exhaust gas processing device, condenser also it is provided with between low temperature belt-type drying machine and exhaust gas processing device, the venting port of condenser is connected with inlet pipe by air recovery channel, is also provided with blower fan between described condenser and exhaust gas processing device.
Further, also comprising apparatus for reusing residual heat, described apparatus for reusing residual heat comprises endothermic section and heat unit, and endothermic section is arranged on the pipeline between described low temperature belt-type drying machine and condenser, and heat unit is connected with inlet pipe.
Preferably, the endotherm section of described direct type flue gas waste heat recovery apparatus and partition formula phase-change heat-exchanger is arranged in discharge flue through direction successively by flue stream.
Preferably, it is provided with blower fan between described inlet pipe and airheater.
Another kind of technical scheme of the present invention: a kind of low temperature belt-type drying device utilizing fume afterheat, comprise boiler body, low temperature belt-type drying machine, also comprise inlet pipe, blower fan, partition formula phase-change heat-exchanger and direct type flue gas waste heat recovery apparatus, described partition formula phase-change heat-exchanger comprises endotherm section and heat release section, described inlet pipe, blower fan, the heat release section of partition formula phase-change heat-exchanger, direct type flue gas waste heat recovery apparatus is connected by pipeline successively with low temperature belt-type drying machine, the endotherm section of described direct type flue gas waste heat recovery apparatus and partition formula phase-change heat-exchanger is arranged in discharge flue.
Preferably, the venting port of described low temperature belt-type drying machine is connected with exhaust gas processing device, also being provided with condenser between low temperature belt-type drying machine and exhaust gas processing device, the venting port of condenser is connected by the heat release section of air recovery channel with partition formula phase-change heat-exchanger.
Further, also comprising apparatus for reusing residual heat, described apparatus for reusing residual heat comprises endothermic section and heat unit, and described endothermic section is arranged on the pipeline between low temperature belt-type drying machine and condenser, and heat unit is connected with inlet pipe.
Further, blower fan also it is provided with between described condenser and exhaust gas processing device.
Preferably, the endotherm section of described direct type flue gas waste heat recovery apparatus and partition formula phase-change heat-exchanger is arranged in discharge flue through direction successively by flue stream.
As mentioned above, it is necessary, the low temperature belt-type drying device utilizing fume afterheat of the present invention, there is following useful effect:
The present invention is connected with partition formula phase-change heat-exchanger by direct type flue gas waste heat recovery apparatus, fume afterheat is utilized to a greater extent, and the wall temperature of partition formula phase-change heat-exchanger endotherm section can be regulated by the present invention, the endotherm section of partition formula phase-change heat-exchanger is avoided to be subject to low temperature corrosion, reduce funnel temperature simultaneously, more independent flue gas waste heat recovery dewatered sludge, its fume afterheat space reclaimed is bigger, and the efficiency of heat energy utilization is higher.
Accompanying drawing explanation
Fig. 1 is the first enforcement mode structure iron of the present invention.
Fig. 2 is that the present invention the 2nd kind implements mode structure iron.
Fig. 3 is the structural representation of partition formula phase-change heat-exchanger of the present invention.
In figure: 1 direct type flue gas waste heat recovery apparatus 10 discharge flue
11 blower fan 12 recycle pumps
2 partition formula phase-change heat-exchanger 21 endotherm sections
22 heat release section 23 upcasts
24 downtake 3 inlet pipe
31 blower fan 4 low temperature belt-type drying machines
5 exhaust gas processing device 51 blower fans
6 airheater 7 condensers
71 air recovery channel 8 apparatus for reusing residual heats
81 endothermic section 82 heat units
9 boiler bodies
Embodiment
Structure that Figure of description illustrates, ratio, size etc., all only content in order to coordinate specification sheets to disclose, understand for person skilled in the art scholar and read, and be not used to limit the enforceable qualifications of the present invention, therefore do not have an essential meaning in technology, the adjustment of the modification of any structure, the change of proportionlity or size, not affecting under effect that the present invention can produce and the object that can reach, all should still drop in the scope that disclosed technology contents can be contained. Simultaneously, this specification sheets is quoted as " on ", D score, "front", "rear", the term such as " centre ", also only for ease of understanding of describing, and it is not used to limit the enforceable scope of the present invention, the change of its relative relation or adjustment, under changing technology contents without essence, when being also considered as the enforceable category of the present invention.
The present invention utilizes the first enforcement mode structure iron of the low temperature belt-type drying device of fume afterheat as shown in Figure 1, comprise boiler body 9, low temperature belt-type drying machine 4, also comprise inlet pipe 3, partition formula phase-change heat-exchanger 2, direct type flue gas waste heat recovery apparatus 1 and airheater 6, as shown in Figure 3, described partition formula phase-change heat-exchanger 2 comprises endotherm section 21 and heat release section 22, endotherm section 21 is connected with downtake 24 by upcast 23 with heat release section 22, the heat release section 22 of described partition formula phase-change heat-exchanger 2, direct type flue gas waste heat recovery apparatus 1 and airheater 6 are connected in turn on circulation line, circulation line is provided with heat-transfer medium, described heat-transfer medium is water or heat-transfer oil etc., circulation line is provided with recycle pump 12, described inlet pipe 3 is connected with the inlet mouth of airheater 6, the air outlet of airheater 6 is connected with low temperature belt-type drying machine 4, the endotherm section 21 of described direct type flue gas waste heat recovery apparatus 1 and partition formula phase-change heat-exchanger 2 is arranged in discharge flue 10.So the venting port of low temperature belt-type drying machine 4 is also connected with an exhaust gas processing device 5, the air after exhaust gas processing device 5 processes enters the external world again. Also being provided with condenser 7 between low temperature belt-type drying machine 4 and exhaust gas processing device 5, described condenser 7 can pass through water-cooled or air cooling way water coolant steam. Also it is provided with blower fan 51 between described condenser 7 and exhaust gas processing device 5, between described inlet pipe 3 and airheater 6, it is provided with blower fan 31. When the air with water vapour discharged from low temperature belt-type drying machine 4 is by condenser 7, water vapour can be condensed into water and be discharged, portion of air is discharged after being processed by blower fan 51 suction exhaust gas processing device 5, and portion of air is drawn back, by blower fan 31, the pipeline recycle again that inlet pipe 3 is connected with airheater 6 by air recovery channel 71.
The present embodiment also comprises apparatus for reusing residual heat 8, described apparatus for reusing residual heat 8 comprises endothermic section 81 and heat unit 82, endothermic section 81 is arranged on the pipeline between described low temperature belt-type drying machine 4 and condenser 7, and heat unit 82 is connected with the pipeline of inlet pipe 3. Absorbing heat and transfer heat to heat unit 82 in the air that described endothermic section 81 can be discharged from low temperature belt-type drying machine 4, heat is passed to the air entering pipeline from inlet pipe 3 by heat unit 82 again, makes air obtain preheating.
In the present embodiment, the flow direction of flue gas in discharge flue 10 is as shown by the arrows in Figure 1, along with the flowing of flue gas, the temperature of flue gas can reduce gradually, medium temperature in pipeline is raised to greatest extent so the endotherm section 21 of direct type flue gas waste heat recovery apparatus 1 and partition formula phase-change heat-exchanger 2 is installed parallel-series by flue stream in discharge flue 10 successively through direction to make full use of fume afterheat, do like this is make use of temperature difference principle, even if flue-gas temperature can reduce gradually along with flowing, but but it is greater than the temperature of heat-transfer medium all the time, heat-transfer medium just can absorb heat always from flue gas. partition formula phase-change heat-exchanger 2 reclaims the fume afterheat of low-grade (low temperature), prevent acid dew corrosion simultaneously, medium in pipeline can absorb the heat of the heat release section 22 of partition formula phase-change heat-exchanger 2, and the medium after heat absorption enters into direct type flue gas waste heat recovery apparatus 1 again, the advantage of direct type flue gas waste heat recovery apparatus is that the temperature difference is little, it is possible to heat-transfer medium is heated to higher temperature, finally the air that temperature is very high is used for mummification and treats mummification material, this is not only maximized has recycled fume afterheat, also makes the efficiency of utilization of low temperature belt-type drying system entirety be improved.
Because containing sour gas in flue gas, when cigarette temperature is high, they can exist in the form of a vapor, when cigarette temperature is lower than a certain temperature, they can be combined into sulfuric acid with the water vapour in flue gas and corrode heat-exchange equipment, so in order to control wall temperature well, prevent acid dew corrosion, the present embodiment also comprises temperature-control device, described temperature-control device is equipped with temperature point on low temperature belt-type drying machine 4 inside with the wall face of the endotherm section 21 of partition formula phase-change heat-exchanger 2, temperature can be carried out Real-Time Monitoring by staff, and by regulating recycle pump 12 to adjust in time and control the temperature of the endotherm section 21 of low temperature belt-type drying machine 4 and partition formula phase-change heat-exchanger 2, prevent acid dew from corroding and ensure to treat the mummification temperature of mummification material.
Working process and the principle of the present embodiment are as follows:
The heat release section 22 of direct type flue gas waste heat recovery apparatus 1, airheater 6, partition formula phase-change heat-exchanger 2 and recycle pump 12 form circulation loop a by pipeline, as shown in double-headed arrow direction in Fig. 1, having the heat-transfer medium such as water or heat-transfer oil in pipeline, heat-transfer medium is flowed in circulation loop by recycle pump 12.For water, flue-gas temperature in discharge flue 10 is probably 130 DEG C~160 DEG C, when the water in circulation loop is through direct type flue gas waste heat recovery apparatus 1, flue gas heat is absorbed by the water flowed through in direct type flue gas waste heat recovery apparatus 1, water after intensification is transported to coupled airheater 6 again, in airheater 6, water transfers heat to the air entered in airheater 6 by pipeline, and the air heated enters low temperature belt-type drying machine 4 again and treats mummification material and carry out mummification. The heat release section 22 that now water in pipeline is back to partition formula phase-change heat-exchanger 2 is preheating to about 80 DEG C, and then again return in direct type flue gas waste heat recovery apparatus 1 and heat further, water circulation in the duct completes the transmission of heat from flue gas to air.
The air of mummification after mummification material is discharged from the venting port of low temperature belt-type drying machine 4, discharge air in low temperature belt-type drying machine 4 after release of heat decrease in temperature to about 85 DEG C, in order to make full use of waste heat, from the air with water vapour of low temperature belt-type drying machine 4 discharge first through the endothermic section 81 of apparatus for reusing residual heat 8, the heat of air is absorbed by the endothermic section 81 of apparatus for reusing residual heat 8 and passes to heat unit 82, the preheating of air that heat unit 82 is connected will newly enter with the pipeline of inlet pipe 3, the temperature of air is made to be elevated to about 70 DEG C, like this through circulation and preheating air again when airheater 6 temperature just can raise further, the complete mud of mummification or other air with water vapour after mummification material enter in condenser 7 again, water vapour is condensed into water and discharges, a condensed air part enters after tail gas disposal device 5 processes and discharges, a part by air recovery channel 71 waste heat again profit enter airheater 6 and heated further by the water in pipeline again, temperature now is probably about 110 DEG C, then in low temperature belt-type drying machine 4, treat mummification material and carry out mummification. air, because the effect of blower fan 31, successively through the heat unit 82 of airheater 6, condenser 7, apparatus for reusing residual heat 8, is finally recovered, and forms circulation loop b, as shown in the direction of arrow single in Fig. 1. in plant running process, the temperature of low temperature belt-type drying machine 4 is carried out Real-Time Monitoring by the temperature point being arranged in low temperature belt-type drying machine 4, the wall temperature of the endotherm section 21 of partition formula phase-change heat-exchanger 2 is carried out Real-Time Monitoring by the temperature point being positioned on partition formula phase-change heat-exchanger 2, signal is passed to Controlling System by two place's temperature points again, Controlling System regulates the wall surface temperature of the endotherm section 21 of the temperature in low temperature belt-type drying machine 4 and partition formula phase-change heat-exchanger 2 by adjustment recycle pump 12, make the temperature in low temperature belt-type drying machine 4 be applicable to mummification and treat mummification material, and make the wall surface temperature of endotherm section 21 all the time higher than acid dew-point temperature, ensure the safe operation of partition formula phase-change heat-exchanger 2, prevent from being corroded.
It is illustrated in figure 2 the 2nd kind of enforcement mode structure iron that the present invention utilizes the low temperature belt-type drying device of fume afterheat, comprise boiler body 9, low temperature belt-type drying machine 4, also comprise inlet pipe 3, blower fan 11, partition formula phase-change heat-exchanger 2 and direct type flue gas waste heat recovery apparatus 1, described partition formula phase-change heat-exchanger 2 comprises endotherm section 21 and heat release section 22 as shown in Figure 3, and endotherm section 21 is connected with downtake 24 by upcast 23 with heat release section 22. Heat release section 22, the direct type flue gas waste heat recovery apparatus 1 of described inlet pipe 3, blower fan 11, partition formula phase-change heat-exchanger 2 are connected by pipeline successively with low temperature belt-type drying machine 4, and the endotherm section 21 of described direct type flue gas waste heat recovery apparatus 1 and partition formula phase-change heat-exchanger 2 is arranged in discharge flue 10.In the present embodiment, the venting port of described low temperature belt-type drying machine 4 is also connected with an exhaust gas processing device 5, and the air after exhaust gas processing device 5 processes enters the external world again. Condenser 7 also it is provided with between described low temperature belt-type drying machine 4 and exhaust gas processing device 5, when the air with water vapour discharged from low temperature belt-type drying machine 4 is by condenser 7, water vapour can be condensed into water and be discharged, and described condenser 7 can pass through water-cooled or air cooling way water coolant steam. Blower fan 51 also it is provided with between described condenser 7 and exhaust gas processing device 5. In order to improve the whole efficiency of device, an air part after cooling is drawn into after exhaust gas processing device 5 processes by blower fan 51 and discharges, another part recycles, and the air recycled enters partition formula phase-change heat-exchanger 2 by air recovery channel 71 after discharging from the venting port of condenser 7 and again utilizes.
From low temperature belt-type drying machine 4 discharge air low temperature belt-type drying machine 4 after release of heat decrease in temperature to about 85 DEG C. So also comprising apparatus for reusing residual heat 8 in the present embodiment, described apparatus for reusing residual heat 8 comprises endothermic section 81 and heat unit 82, described endothermic section 81 is arranged on the pipeline between low temperature belt-type drying machine 4 and condenser 7, and heat unit 82 is connected with inlet pipe 3 pipeline. The air that described endothermic section 81 can be discharged from low temperature belt-type drying machine 4 absorbs heat, and transfers heat to the air flowing through heat unit 82, make air obtain preheating.
The endotherm section 21 of the flue gas waste heat recovery apparatus of direct type described in the present embodiment 1 and partition formula phase-change heat-exchanger 2 is arranged in discharge flue 10 by flue stream through direction, and the object that the object arranged like this implements mode with the first is identical. Also being provided with temperature-control device in the present embodiment, it is identical that mode is implemented with the first in the effect of described temperature-control device and the position of temperature point.
Working process and the principle of the present invention are as follows:
As shown in the direction of arrow in Fig. 2, the heat release section 22 of direct type flue gas waste heat recovery apparatus 1, partition formula phase-change heat-exchanger 2, low temperature belt-type drying machine 4 and blower fan 11 form a circulation loop by pipeline, and inlet pipe 3 is that circulation loop provides air. flue-gas temperature in discharge flue 10 is probably 130 DEG C~160 DEG C, the absorption of air that the heat of flue stream through direct type flue gas waste heat recovery apparatus 1 and in flue gas is flowed through in direct type flue gas waste heat recovery apparatus 1, air after intensification enters into low temperature belt-type drying machine 4 dewatered sludge again or other treat mummification material, in drying process, mud or other water vapour treating that mummification material evaporates are discharged from the venting port of low temperature belt-type drying machine 4 with air, air now probably has 85 DEG C, air is again through the endothermic section 81 of apparatus for reusing residual heat 8, heat is predominantly absorbed and passes to the air that the heat unit 82 of apparatus for reusing residual heat 8 newly enters in circulation loop for preheating. condenser 7 is entered by the air of apparatus for reusing residual heat 8, water vapour in air is cooled to water and is discharged, then because of the effect of blower fan 51, major part air can enter exhaust gas processing device 5 and discharges after treatment, and another part air enters into circulating line by air recovery channel 71 and is reused for dewatered sludge or other treat mummification material. also temperature-control device is comprised in the present embodiment, in overall operation process of the present invention, the temperature of low temperature belt-type drying machine 4 carries out Real-Time Monitoring by the temperature point being arranged in low temperature belt-type drying machine, the effect of temperature point that is positioned on partition formula phase-change heat-exchanger 2 is identical with the effect of the first enforcement mode.
Boiler body 9 in above embodiment can be coal-fired, oil-firing boiler, and incinerator, process furnace etc., above embodiment is equally applicable to the high coal dust of the water ratio such as mummification brown coal and biomass fuel etc.
In sum, the low temperature belt-type drying device utilizing fume afterheat of the present invention, it is possible to improve the utilization ratio of fume afterheat, and reduce the corrosion to equipment. So, the present invention effectively overcomes practical problemss more of the prior art thus is utilizing very high utility value and use meaning in smoke residual heat to dry sludge, fire coal, biomass fuel etc.
Above-mentioned enforcement mode is the principle of illustrative the present invention and effect thereof only, but not for limiting the present invention. The present invention also has many aspects can improve under the prerequisite not running counter to overall thought, all under the spirit not running counter to the present invention and category, can be modified by above-described embodiment or change for person skilled in the art scholar. Therefore, in art, tool usually intellectual, not departing under disclosed spirit and technological thought all the equivalence modifications completed or change, must be contained by the claim of the present invention such as.

Claims (10)

1. one kind utilizes the low temperature belt-type drying device of fume afterheat, comprise boiler body (9), low temperature belt-type drying machine (4), it is characterized in that: also comprise inlet pipe (3), partition formula phase-change heat-exchanger (2), direct type flue gas waste heat recovery apparatus (1) and airheater (6), described partition formula phase-change heat-exchanger (2) comprises endotherm section (21) and heat release section (22), the heat release section (22) of described partition formula phase-change heat-exchanger (2), direct type flue gas waste heat recovery apparatus (1) and airheater (6) are connected in turn on circulation line, circulation line is provided with heat-transfer medium, circulation line is provided with recycle pump (12), described inlet pipe (3) is connected with the inlet mouth of airheater (6), the air outlet of airheater (6) is connected with low temperature belt-type drying machine (4), the endotherm section (21) of described direct type flue gas waste heat recovery apparatus (1) and partition formula phase-change heat-exchanger (2) is arranged in discharge flue (10).
2. the low temperature belt-type drying device utilizing fume afterheat according to claim 1, it is characterized in that: the venting port of described low temperature belt-type drying machine (4) is connected with exhaust gas processing device (5), condenser (7) also it is provided with between low temperature belt-type drying machine (4) and exhaust gas processing device (5), the venting port of condenser (7) is connected with inlet pipe (3) by air recovery channel (71), is also provided with blower fan (51) between described condenser (7) and exhaust gas processing device (5).
3. the low temperature belt-type drying device utilizing fume afterheat according to claim 2, it is characterized in that: also comprise apparatus for reusing residual heat (8), described apparatus for reusing residual heat (8) comprises endothermic section (81) and heat unit (82), endothermic section (81) is arranged on the pipeline between described low temperature belt-type drying machine (4) and condenser (7), and heat unit (82) is connected with inlet pipe (3).
4. the low temperature belt-type drying device utilizing fume afterheat according to claim 1, it is characterised in that: the endotherm section (21) of described direct type flue gas waste heat recovery apparatus (1) and partition formula phase-change heat-exchanger (2) is arranged in discharge flue (10) through direction successively by flue stream.
5. the low temperature belt-type drying device utilizing fume afterheat according to claim 1, it is characterised in that: it is provided with blower fan (31) between described inlet pipe (3) and airheater (6).
6. one kind utilizes the low temperature belt-type drying device of fume afterheat, comprise boiler body (9), low temperature belt-type drying machine (4), it is characterized in that: also comprise inlet pipe (3), blower fan (11), partition formula phase-change heat-exchanger (2) and direct type flue gas waste heat recovery apparatus (1), described partition formula phase-change heat-exchanger (2) comprises endotherm section (21) and heat release section (22), described inlet pipe (3), blower fan (11), the heat release section (22) of partition formula phase-change heat-exchanger (2), direct type flue gas waste heat recovery apparatus (1) is connected by pipeline successively with low temperature belt-type drying machine (4), the endotherm section (21) of described direct type flue gas waste heat recovery apparatus (1) and partition formula phase-change heat-exchanger (2) is arranged in discharge flue (10).
7. the low temperature belt-type drying device utilizing fume afterheat according to claim 6, it is characterized in that: the venting port of described low temperature belt-type drying machine (4) is connected with exhaust gas processing device (5), also being provided with condenser (7) between low temperature belt-type drying machine (4) and exhaust gas processing device (5), the venting port of condenser (7) is connected with the heat release section (22) of partition formula phase-change heat-exchanger (2) by air recovery channel (71).
8. the low temperature belt-type drying device utilizing fume afterheat according to claim 7, it is characterized in that: also comprise apparatus for reusing residual heat (8), described apparatus for reusing residual heat (8) comprises endothermic section (81) and heat unit (82), described endothermic section (81) is arranged on the pipeline between low temperature belt-type drying machine (4) and condenser (7), and heat unit (82) is connected with inlet pipe (3).
9. the low temperature belt-type drying device utilizing fume afterheat according to claim 7, it is characterised in that: also it is provided with blower fan (51) between described condenser (7) and exhaust gas processing device (5).
10. the low temperature belt-type drying device utilizing fume afterheat according to claim 6, it is characterised in that: the endotherm section (21) of described direct type flue gas waste heat recovery apparatus (1) and partition formula phase-change heat-exchanger (2) is arranged in discharge flue (10) through direction successively by flue stream.
CN201310590079.3A 2013-11-20 2013-11-20 Utilize the low temperature belt-type drying device of fume afterheat Active CN104649559B (en)

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