CN104215058B - Solid material drying device - Google Patents
Solid material drying device Download PDFInfo
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- CN104215058B CN104215058B CN201310208200.1A CN201310208200A CN104215058B CN 104215058 B CN104215058 B CN 104215058B CN 201310208200 A CN201310208200 A CN 201310208200A CN 104215058 B CN104215058 B CN 104215058B
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Abstract
The invention provides a kind of solid material drying device.This solid material drying device comprises: afterheat heat exchanger; Pneumatic conveyer dryer, its heat carrier import is connected with the heating medium outlet of afterheat heat exchanger; And heat pump, its carrier gas inlet exports with the carrier gas of pneumatic conveyer dryer and is connected, its carrier gas outlet is connected with the carrier gas inlet of pneumatic conveyer dryer, and its heat carrier import is connected with the heating medium outlet of pneumatic conveyer dryer, and its heating medium outlet is connected with the heat carrier import of afterheat heat exchanger.Solid material drying device structure of the present invention is simple, be easy to management and maintenance, and fuel utilization efficiency is high.
Description
Technical field
The invention belongs to heat energy recycle field, particularly relate to a kind of solid material drying device.
Background technology
The drying of solid particle fuel and classification are preconditioning techniques important in derived energy chemical industry.For coal chemical industry, carrying out the comprehensive utilization ratio that gasification process can improve coal, alleviate environmental pollution to coal, is one of optimumitem in current clean coal technology.The coal of high volatile is comparatively applicable to gasification, and as the bituminous coal on low-order coal and middle coal rank, but the general moisture of this kind of coal is higher, if directly enter furnace gas, moisture evaporation in burner hearth can absorb amount of heat, reduces fire box temperature, reduces gasification product calorific value, increases CO
2discharge; And once as-fired coal moisture is higher than certain critical value, just there will be the not smooth problem of charging, make gasification furnace there is burning and explosion danger.The High water cut of coal has had a strong impact on the efficiency utilization of coal.Therefore, before gasification drying process is carried out to as-fired coal very necessary.
Chinese utility model patent ZL201020131205.0 discloses a kind of blast furnace air absorbent dehumidifier utilizing hot-blast stove fume waste heat.As shown in Figure 1, this blast furnace air absorbent dehumidifier comprises at least one heat exchanger, at least one hot water lithium bromide absorbing refrigeration unit, blast furnace air moisture eliminator and air cleaner; Heat exchanger connects hot-blast stove fume discharge tube by flue, hot water lithium bromide absorbing refrigeration unit is connected by heat-exchanger pump and pipeline with heat exchanger, blast furnace air moisture eliminator is connected with hot water lithium bromide absorbing refrigeration unit by water supply pump and pipeline, air cleaner is arranged on the import department of blast furnace air moisture eliminator, and the outlet of blast furnace air moisture eliminator connects air blast.Utilize hot-blast stove fume waste heat as driven by energy lithium bromide adsorption water chilling unit for blast furnace air absorbent dehumidifier provides cold water and reach the object of air blow for removing moisture.But above-mentioned blast furnace air absorbent dehumidifier system architecture more complicated, fuel utilization efficiency is on the low side.
Summary of the invention
(1) technical problem that will solve
In view of above-mentioned technical problem, the invention provides a kind of solid material drying device, to simplify the structure of solid material drying device, improve fuel utilization efficiency.
(2) technical scheme
According to an aspect of the present invention, a kind of solid material drying device is provided.This solid material drying device comprises: afterheat heat exchanger; Pneumatic conveyer dryer, its heat carrier import is connected with the heating medium outlet of afterheat heat exchanger; And heat pump, its carrier gas inlet exports with the carrier gas of pneumatic conveyer dryer and is connected, its carrier gas outlet is connected with the carrier gas inlet of pneumatic conveyer dryer, and its heat carrier import is connected with the heating medium outlet of pneumatic conveyer dryer, and its heating medium outlet is connected with the heat carrier import of afterheat heat exchanger.Wherein, in afterheat heat exchanger, heat carrier and waste heat carrier carry out heat exchange, and heat absorption enters pneumatic conveyer dryer after heating up; In pneumatic conveyer dryer, this heat carrier carries out drying at heat-transfer surface Inner eycle to treating material, then enters heat pump; In heat pump, utilize the heat pump fluid of the heat of this heat carrier remnants to heat pump to heat, drive heat pump cycle, then this heat carrier is circulated to afterheat heat exchanger again.In pneumatic conveyer dryer, carrier gas is carried the steam brought due to dry materials and is entered heat pump, in heat pump, carries out cooling condensation dry to this carrier gas, again send in pneumatic conveyer dryer after then utilizing heat pump fluid to heat carrier gas.
(3) beneficial effect
As can be seen from technique scheme, solid material drying device of the present invention has following beneficial effect:
(1) system architecture is simple, is easy to management and maintenance;
(2) heat carrier is to after flue gas waste heat recovery, realizes cascade utilization according to heat grade, and more high-grade heat is directly used in drying, again can provide thermal source for heat pump; Realize the effect of energy-saving and emission-reduction, a tractor serves several purposes, improve fuel utilization efficiency;
(3) drive heat pump using industrial exhaust heat/waste gas as thermal source, utilize heat pump to be greater than warm amount in 1 part, warm amount preheating/drying fuel in utilization with the high-temperature residual heat of 1 part for cost obtains, promote fuel grade, thus optimize stove combustion condition;
(4) waste heat can also provide industrial hot water to scene; And can reclaim the condensed water evaporated in wet stock, may be used for on-the-spot other after being collected to cistern needs water conservancy project process flow, and therefore this system is particularly useful for the area of lack of water, and except producing condensed water, without any discharge, very environmental protection;
(5) because carrier gas is at system Inner eycle, inert atmosphere can be adopted, effectively to avoid the burning of flammable materials in dry run and hidden peril of explosion;
(6) existing equipment is typically equipped with afterheat heat exchanger, steam, hot water or other heat carrier can being provided, therefore except needing pipe laying to introduce except the heat carrier of up-stream system, using Analysis of Heat Pump Drying System, need not transform existing equipment, it is low that system realizes cost.
Accompanying drawing explanation
Fig. 1 is the structural representation of prior art blast furnace air absorbent dehumidifier;
Fig. 2 is the structural representation of embodiment of the present invention solid material drying device.
[main element symbol description of the present invention]
1-pneumatic conveyer dryer; 2-deduster;
3 heat pumps; 4-afterheat heat exchanger;
31-evaporimeter; 32-condenser;
33-generator; 34-working medium circulation pipeline.
A-carrier gas; B-waste heat carrier;
C-heat carrier.
Detailed description of the invention
For making the object, technical solutions and advantages of the present invention clearly understand, below in conjunction with specific embodiment, and with reference to accompanying drawing, the present invention is described in more detail.It should be noted that, in accompanying drawing or description describe, similar or identical part all uses identical figure number.The implementation not illustrating in accompanying drawing or describe is form known to a person of ordinary skill in the art in art.In addition, although herein can providing package containing the demonstration of the parameter of particular value, should be appreciated that, parameter without the need to definitely equaling corresponding value, but can be similar to corresponding value in acceptable error margin or design constraint.
The invention provides a kind of solid material drying device.In this solid material drying device, heat carrier is to after flue gas waste heat recovery, and more high-grade heat is directly used in drying, again can provide thermal source for heat pump, thus realize cascade utilization according to heat grade, improve fuel efficiency.
In one exemplary embodiment of the present invention, provide a kind of solid material drying device.Fig. 2 is the structural representation of embodiment of the present invention solid material drying device.As shown in Figure 2, this solid material drying device comprises: afterheat heat exchanger 4; Pneumatic conveyer dryer 1, its heat carrier import is connected with the heating medium outlet of described afterheat heat exchanger 4; Deduster 2, its carrier gas inlet exports with the carrier gas of described pneumatic conveyer dryer 1 and is connected; Heat pump 3, its carrier gas inlet exports with the carrier gas of described deduster 2 and is connected, its carrier gas outlet is connected with the carrier gas inlet of described pneumatic conveyer dryer 1, its heat carrier import is connected with the heating medium outlet of described pneumatic conveyer dryer 1, and its heating medium outlet is connected with the heat carrier import of described afterheat heat exchanger 4.
Heat carrier C circulation technology is: in described afterheat heat exchanger 4, and the waste heat carrier B of heat carrier C and process upstream carries out heat exchange, and heat absorption enters pneumatic conveyer dryer after heating up; In described pneumatic conveyer dryer, this heat carrier C carries out drying at heat-transfer surface Inner eycle to material, then enters heat pump; In described heat pump, utilize the heat pump fluid E of the heat of this heat carrier C remnants to heat pump to heat, drive heat pump cycle, then this heat carrier C is circulated to afterheat heat exchanger again.
Wherein, waste heat carrier B be can in a large number, the stable engineering residual heat resources obtained, as flue gas, hot water or steam.Thermal cyclic carrier C is water/steam or oil.When waste heat carrier B is steam, can directly use as thermal cyclic carrier C.
Carrier gas A circulation technology is: in pneumatic conveyer dryer, and carrier gas A carries the steam brought due to dry materials and enters dust arrester; The carrier gas A of dust arrester centering temperature high humidity carries out dust removal process; In heat pump, the carrier gas A of centering temperature high humidity carries out cooling condensation and dries, then utilize heat pump fluid E realize heat carrying carrier gas A is heated after again send in pneumatic conveyer dryer.
Wherein, carrier gas A is selected from the one in following group: the mixture of air, flue gas, coal gas, nitrogen or These gases.Preferably, carrier gas A is selected from nitrogen or other oxygen content are low or oxygen-free gas, thus avoids the burning of flammable materials in dry run and hidden peril of explosion.
In the preferred embodiment of the invention, afterheat heat exchanger 4 shown in Fig. 2 is indirect type heat exchanger or the heat exchanger with assignment of traffic and regulatory function, thus can control the temperature of heat carrier C easily, prevent it too high or too low and affect the effect of material desiccant dehumidification.
The internal placement of pneumatic conveyer dryer 1 has indirect type heat-transfer surface.Treating material, such as Loose Bodies material is placed on this indirect type heat-transfer surface, and the heating medium inlet of this indirect type heat-transfer surface is connected to the heating medium outlet of afterheat heat exchanger 4, and its heating medium outlet is connected to the heat carrier import of heat pump 3.
Although have deduster 2 in the solid material drying device shown in Fig. 2, deduster 2 is not necessary in the present embodiment, and when the dust that solid material produces is less, this deduster 2 can omit.
Please refer to Fig. 2, heat pump is absorption heat pump, comprising: evaporimeter 31, working medium circulation pipeline 34, condenser 32 and generator 33.Evaporimeter 31, for carrying out condensation process to carrying out the carrier gas after dedusting by deduster 2, make part steam be cooled to dew point, separate out as condensed water D, condensed water D is discharged into cistern 5 by pipeline.Condenser 32, for heating the carrier gas after condensation process, is re-entered pneumatic conveyer dryer 1.Heat pump fluid E flows in heat pump, heated by heat carrier C at generator 33, impel it to flow along working medium circulation pipeline 34, simultaneously, go out at evaporimeter 31 heat produced due to carrier gas condensation process also to be circulated by heat pump fluid, thus in condenser 32, carrier gas is heated.
The present embodiment solid material drying device can reclaim the condensed water evaporated in wet stock; may be used for on-the-spot other after being collected to cistern and need water conservancy project process flow, therefore this system is particularly useful for the area of lack of water, and except producing condensed water; without any discharge, very environmental protection.
Existing equipment is typically equipped with afterheat heat exchanger, can provide steam, hot water or other heat carrier, therefore except needing pipe laying to introduce except the heat carrier of up-stream system, use Analysis of Heat Pump Drying System, need not transform existing equipment, it is low that system realizes cost, is very beneficial for applying.
In sum, the invention provides a kind of solid material drying device.In this solid material drying device, heat carrier, to after flue gas waste heat recovery, realizes cascade utilization according to heat grade, and more high-grade heat is directly used in drying, again can provide thermal source for heat pump; Realize the effect of energy-saving and emission-reduction, a tractor serves several purposes, improve fuel utilization efficiency.
Above-described specific embodiment; object of the present invention, technical scheme and beneficial effect are further described; be understood that; the foregoing is only specific embodiments of the invention; be not limited to the present invention; within the spirit and principles in the present invention all, any amendment made, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a solid material drying device, is characterized in that, comprising:
Afterheat heat exchanger;
Pneumatic conveyer dryer, its heat carrier import is connected with the heating medium outlet of described afterheat heat exchanger; And
Heat pump, its carrier gas inlet exports with the carrier gas of described pneumatic conveyer dryer and is connected, its carrier gas outlet is connected with the carrier gas inlet of described pneumatic conveyer dryer, its heat carrier import is connected with the heating medium outlet of described pneumatic conveyer dryer, and its heating medium outlet is connected with the heat carrier import of described afterheat heat exchanger;
In described afterheat heat exchanger, heat carrier and waste heat carrier carry out heat exchange, and heat absorption enters described pneumatic conveyer dryer after heating up; In described pneumatic conveyer dryer, this heat carrier carries out drying at heat-transfer surface Inner eycle to treating material, then enters described heat pump; In described heat pump, utilize the heat pump fluid of the heat of this heat carrier remnants to described heat pump to heat, drive described heat pump cycle, then this heat carrier is circulated to described afterheat heat exchanger again;
In described pneumatic conveyer dryer, carrier gas is carried the steam brought due to dry materials and is entered described heat pump, in described heat pump, cooling condensation is carried out to this carrier gas and dries, again send in described pneumatic conveyer dryer after then utilizing described heat pump fluid to heat carrier gas.
2. solid material drying device according to claim 1, is characterized in that, described heat pump is absorption heat pump, comprising:
Evaporimeter, for carrying out condensation process to the carrier gas exported by described pneumatic conveyer dryer, making part steam be cooled to dew point, separating out as condensed water;
Generator, for utilizing the described heat carrier that utilizes to heat the heat pump fluid of heat to described heat pump that material carries out dry rear remnants at pneumatic conveyer dryer, drives described heat pump to circulate in working medium circulation pipeline; And
Condenser, for utilizing the heat of heat pump fluid to heat the carrier gas after condensation process, is re-entered pneumatic conveyer dryer.
3. solid material drying device according to claim 2, is characterized in that, described heat pump also comprises:
Cistern, is connected to described evaporimeter by pipeline, for collecting the condensed water that described evaporimeter produces.
4. solid material drying device according to claim 1, is characterized in that, described waste heat carrier is flue gas, hot water or steam.
5. solid material drying device according to claim 4, is characterized in that, described afterheat heat exchanger is indirect type heat exchanger or the heat exchanger with assignment of traffic and regulatory function.
6. solid material drying device according to claim 1, is characterized in that, described carrier gas is selected from the one in following group: the mixture of air, flue gas, coal gas, nitrogen or These gases.
7. solid material drying device according to claim 6, is characterized in that, described carrier gas is nitrogen.
8. solid material drying device according to any one of claim 1 to 7, is characterized in that, also comprise:
Deduster, its carrier gas inlet exports with the carrier gas of described pneumatic conveyer dryer and is connected, and its carrier gas outlet is connected with the carrier gas inlet of described heat pump, carries out dust removal process for the carrier gas exported described pneumatic conveyer dryer.
9. solid material drying device according to any one of claim 1 to 7, is characterized in that, the internal placement of described pneumatic conveyer dryer has indirect type heat-transfer surface, and described treating material is placed on this indirect type heat-transfer surface.
10. solid material drying device according to claim 9, is characterized in that, described treating material is Loose Bodies material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310208200.1A CN104215058B (en) | 2013-05-30 | 2013-05-30 | Solid material drying device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310208200.1A CN104215058B (en) | 2013-05-30 | 2013-05-30 | Solid material drying device |
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| CN104215058A CN104215058A (en) | 2014-12-17 |
| CN104215058B true CN104215058B (en) | 2016-02-24 |
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| CN201310208200.1A Active CN104215058B (en) | 2013-05-30 | 2013-05-30 | Solid material drying device |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108202076A (en) * | 2018-01-02 | 2018-06-26 | 大连理工大学 | A kind of pump coupled heat biological heat anhydration system and method |
| CN108362075B (en) * | 2018-02-09 | 2024-03-12 | 山西大学 | Bed-mixing type air fluidized bed dry coal slime combustion system integrated with absorption heat pump |
| CN113758226B (en) * | 2021-09-13 | 2022-09-27 | 南昌航空大学 | Dryer tail gas waste heat recovery device, dryer and waste heat recovery method |
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| JP6063257B2 (en) * | 2010-03-31 | 2017-01-18 | 株式会社大川原製作所 | Operation method of drying system comprising heat pump unit and exhaust heat recovery mechanism |
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| CN104215058A (en) | 2014-12-17 |
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