CN206724123U - Residual neat recovering system - Google Patents
Residual neat recovering system Download PDFInfo
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- CN206724123U CN206724123U CN201720338760.2U CN201720338760U CN206724123U CN 206724123 U CN206724123 U CN 206724123U CN 201720338760 U CN201720338760 U CN 201720338760U CN 206724123 U CN206724123 U CN 206724123U
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Abstract
The utility model provides a kind of residual neat recovering system, including：First heat-exchanger rig and the second heat-exchanger rig；The inner wall surrounding of first heat-exchanger rig is provided with water-cooling wall, and the water-cooling wall surround and forms the first cavity；The second cavity is formed between the water-cooling wall and the inwall；First cavity connects with second cavity；Second heat-exchanger rig is internally provided with the first heat-exchanging tube bundle, has the 3rd cavity between the inwall of first heat-exchanging tube bundle and second heat-exchanger rig；Second cavity is also connected with first heat-exchanging tube bundle, and the water-cooling wall is also connected with the 3rd cavity；First gas exports second gas to first heat-exchanging tube bundle after passing sequentially through first cavity, second cavity；The temperature of the first gas is more than the temperature of the second gas.The utility model carries out repeatedly reclaiming and utilizing to the waste heat in gas, improves the recycling efficiency of gas waste-heat, preferably reached the purpose of energy-saving and emission-reduction by setting multiple heat-exchanger rigs.
Description
Technical field
The utility model belongs to technical field of waste heat utilization, more particularly to a kind of residual neat recovering system.
Background technology
Gas waste-heat resource belongs to secondary energy sources, be primary energy or combustible material conversion after product, or fuel combustion
The heat sent during burning heat remaining after a certain technical process is completed.
Prior art typically uses waste heat boiler gas recovery waste heat, and waste heat boiler is built into burner hearth by refractory brick, in burner hearth
The water flowed in tube bank is heated and vaporized by burner hearth by installing tube bank, high-temperature gas, but in restraining caused vapor (steam) temperature compared with
It is low, thus also need to set superheater in waste heat boiler, to caused vapor in tube bank, further heating is steamed with producing superheated water
Gas, superheated steam is recycled to be generated electricity, heated.
Current waste heat boiler also needs to set superheater to heat steam, can not make full use of gas waste-heat, while using general
As heating surface, its heating surface is small, and waste heat recovery efficiency is low, is returned therefore, it is necessary to develop a kind of fume afterheat for logical tube bank
Receipts system, the recycling efficiency of waste heat can be effectively improved, preferably reach the purpose of energy-saving and emission-reduction.
Utility model content
The utility model provides a kind of residual neat recovering system, is combined by multiple heat-exchanger rigs, to make full use of more than gas
Heat, improve the efficiency of waste heat recovery.
Residual neat recovering system provided by the utility model, including：First heat-exchanger rig and the second heat-exchanger rig；
The inner wall surrounding of first heat-exchanger rig is provided with water-cooling wall, and the water-cooling wall surround and forms the first cavity；Institute
State and the second cavity is formed between water-cooling wall and the inwall；First cavity connects with second cavity；
Second heat-exchanger rig is internally provided with the first heat-exchanging tube bundle, first heat-exchanging tube bundle and the described second heat exchange
There is the 3rd cavity between the inwall of device；
Second cavity is also connected with first heat-exchanging tube bundle, and the water-cooling wall is also connected with the 3rd cavity；
First gas exports second gas to the described first heat exchange after passing sequentially through first cavity, second cavity
Tube bank；The temperature of the first gas is more than the temperature of the second gas；
Water with the first preset temperature is by exporting the first steam to the 3rd cavity after the water-cooling wall so that institute
State the 3rd cavity and export the second steam；The temperature of second steam is more than the temperature of first steam.
Optionally, the system also includes：First drum；
First steam is exported to the 3rd cavity by first drum；
Water with the second preset temperature passes through first drum so that the first drum output is described to have first
The water of preset temperature is to the water-cooling wall.
Optionally, the system also includes the 3rd heat-exchanger rig, and the 3rd heat-exchanger rig is internally provided with the second heat exchange
There is the 4th cavity between the inwall of tube bank, second heat-exchanging tube bundle and the 3rd heat-exchanger rig；
First heat-exchanging tube bundle also exports third gas to second heat-exchanging tube bundle；The temperature of the third gas is small
In the temperature of the second gas；
Water with the 3rd preset temperature is by exporting the 3rd steam after the 4th cavity；
The third gas is by exporting the 4th gas after second heat-exchanging tube bundle；The temperature of 4th gas is less than
The temperature of the third gas.
Optionally, the system also includes：Second drum；
3rd steam after second drum by exporting；
Water with the 4th preset temperature passes through second drum so that the second drum output is described to have the 3rd
The water of preset temperature is to the 4th cavity.
Optionally, the water-cooling wall includes：At least one layer of water-cooling wall；Away from the inwall at least one layer of water-cooling wall
Water-cooling wall around forming first cavity；In at least one layer of water-cooling wall close to the inwall water-cooling wall with it is described interior
The second cavity is formed between wall；Wherein, it is also formed with cavity between the water-cooling wall of adjacent layer.
Optionally, first cavity bottom is additionally provided with tank so that the first gas enters first cavity
Afterwards by being exported after the tank to second cavity.
Optionally, the bottom of the tank is connected with collector；The collector is used to collect in the first gas
Solid impurity.
Optionally, the bottom of the tank connects the collector by flange.
Optionally, deflector is additionally provided with inside first heat-exchanger rig, the deflector is used for first gas
Body is imported in first cavity.
Residual neat recovering system provided by the utility model, including：First heat-exchanger rig and the second heat-exchanger rig；This first is changed
The inner wall surrounding of thermal is provided with water-cooling wall, and the water-cooling wall surround and forms the first cavity；Formed between the water-cooling wall and the inwall
Second cavity；First cavity connects with second cavity；Second heat-exchanger rig is internally provided with the first heat-exchanging tube bundle, and this
There is the 3rd cavity between the inwall of one heat-exchanging tube bundle and second heat-exchanger rig；First gas passes sequentially through first cavity, is somebody's turn to do
Second gas is exported after second cavity to first heat-exchanging tube bundle；The temperature of the first gas is more than the temperature of the second gas；
Water with the first preset temperature is by exporting the first steam to the 3rd cavity after the water-cooling wall so that the 3rd cavity exports
Second steam；The temperature of second steam is more than the temperature of first steam.The utility model by setting multiple heat-exchanger rigs,
Waste heat in gas is carried out repeatedly to reclaim and utilize, the recycling efficiency of gas waste-heat is improved, has preferably reached section
The purpose of energy emission reduction.
Brief description of the drawings
Fig. 1 is a kind of residual neat recovering system schematic diagram provided by the utility model；
Fig. 2 is another residual neat recovering system schematic diagram provided by the utility model；
Fig. 3 is also a kind of residual neat recovering system schematic diagram provided by the utility model；
Fig. 4 is another residual neat recovering system schematic diagram provided by the utility model.
Description of reference numerals：
The heat-exchanger rigs of 1- first；2- water-cooling walls；The cavitys of 3- first；The cavitys of 4- second；The air inlets of 5- first；6- first is intake
Mouthful；The steam (vapor) outlets of 7- first；The gas outlets of 8- first；The heat-exchanger rigs of 9- second；The heat-exchanging tube bundles of 10- first；The cavitys of 11- the 3rd；12-
Second air inlet；The steam inlets of 13- first；The gas outlets of 14- second；The steam (vapor) outlets of 15- second；The drums of 16- first；17- the 3rd
Heat-exchanger rig；The heat-exchanging tube bundles of 18- second；The cavitys of 19- the 4th；The air inlets of 20- the 3rd；The water inlets of 21- second；The outlets of 22- the 3rd
Mouthful；The steam (vapor) outlets of 23- the 3rd；The drums of 24- second；25- tanks；26- collectors；27- deflectors.
Embodiment
The utility model provides a kind of residual neat recovering system, and Fig. 1 is a kind of residual neat recovering system provided by the utility model
Schematic diagram.Residual neat recovering system as shown in Figure 1, including：First heat-exchanger rig 1 and the second heat-exchanger rig 9.
The inner wall surrounding of first heat-exchanger rig 1 is provided with water-cooling wall 2, and water-cooling wall 2 is around the first cavity 3 of formation；Water-cooling wall 2
The second cavity 4 is formed between the inwall；First cavity 3 connects with the second cavity 4.
Second heat-exchanger rig 9 is internally provided with the first heat-exchanging tube bundle 10, the first heat-exchanging tube bundle 10 and the second heat-exchanger rig 9
There is the 3rd cavity 11 between inwall.
Second cavity 4 is also connected with the first heat-exchanging tube bundle 10, and water-cooling wall 2 is also connected with the 3rd cavity 11.
First gas exports second gas to the first heat-exchanging tube bundle 6 after passing sequentially through the first cavity 3, the second cavity 4；First
The temperature of gas is more than the temperature of second gas.
Water with the first preset temperature is by exporting the first steam to the 3rd cavity 11 after water-cooling wall 2 so that the 3rd chamber
Body 11 exports the second steam；The temperature of second steam is more than the temperature of the first steam.
Specifically, water-cooling wall is composed in parallel by more water pipes, the inwall of the first heat-exchanger rig 1 is looped around, with waste heat boiler
Internal tube bank is compared, and its evaporating heating surface is bigger, and heat recovery efficiency is higher.
First gas for example can be by the high-temperature gas of reacting furnace output, such as high-temperature flue gas.First gas can pass through
One heat-exchanger rig 1 is exchanged heat, and exports second gas；The temperature of second gas is less than the temperature of first gas.The first gas
Temperature for example can be 900~1400 DEG C, the temperature of the second gas for example can be 580 DEG C.
First preset temperature for example can be normal temperature.The water of first preset temperature is changed into the first heat-exchanger rig
Heat so that the first heat-exchanger rig exports the first steam, and first steam can be saturated vapor, and pressure for example can be
4.2MPa, temperature for example can be 250 DEG C.
First gas is by the first cavity 3, because the first cavity 3 connects with the second cavity 4 so that first gas is passed through
In second cavity 4.First cavity 3 is that the second cavity 4 is to be formed by water-cooling wall 2 with inwall around being formed by water-cooling wall 2,
Therefore, first gas is from the first cavity 3 during the second cavity 4 is passed through, first gas and be passed through in water-cooling wall 2 the
The water of one preset temperature is exchanged heat so that the first steam is produced in water-cooling wall 2, second gas is produced in the second cavity 4.
Second gas in second cavity 4 enters in the first heat-exchanging tube bundle 10, and the first steam caused by water-cooling wall 2 enters the
In three cavitys 11, because the first heat-exchanging tube bundle 10 is arranged in the 3rd cavity 11, and the temperature of the first steam is less than second gas
The temperature of body, therefore, during second gas is passed through the first heat-exchanging tube bundle 10, second gas is with being passed through in the 3rd cavity 11
First steam is exchanged heat so that produces the second steam in the 3rd cavity 11.
Wherein, the temperature of second steam for example can be 400 DEG C.Because the temperature of the second steam is more than the first steam
Temperature, therefore second steam can also be referred to as superheated steam.Second steam can be used for generating electricity, heating.
For example, the first air inlet 5, the first water inlet 6, the first steam (vapor) outlet 7 and are provided with outside the first heat-exchanger rig 1
One gas outlet 8；Wherein, the first air inlet 6 is connected with the first cavity 3, and the first water inlet 6 is connected with water-cooling wall 2；First gas outlet
8 are connected with the second cavity 4；First steam (vapor) outlet 7 is connected with water-cooling wall 2.
The second air inlet 12, the first steam inlet 13, the second gas outlet 14 and second are provided with outside second heat-exchanger rig 9
Steam (vapor) outlet 15；Wherein, the first gas outlet 8 is connected with the second air inlet 12, and the second air inlet 12 connects with the first heat-exchanging tube bundle 10
Connect, the first heat-exchanging tube bundle 10 is connected with the second gas outlet 14, and the first steam (vapor) outlet 7 is connected with the first steam inlet 13, and first steams
Vapor inlet 13 is connected with the 3rd cavity 11, and the 3rd cavity 11 is connected with the second steam (vapor) outlet 15.Wherein, the first gas outlet 8 and
Two air inlets 12 are connected by gas pipeline, and expansion joint is additionally provided with the gas pipeline, and the expansion joint can be used for absorbing the gas
Body pipeline caused change in size due to reasons such as expanded by heating.Wherein, the first gas outlet 8 and the second air inlet 12 pass through
Flange is connected with the gas pipeline.
First gas sequentially enters the first cavity 3, the second cavity 4 by the first air inlet 5 so that the first gas outlet 8 is defeated
Go out second gas；Second gas enters heat-exchanging tube bundle by the second air inlet 12, is discharged by the second gas outlet 14.
Water with preset temperature is gone out by exporting the first steam to the first steam after the first water inlet 6 entrance water-cooling wall 2
Mouth 7；First steam of output enters the 3rd cavity 11 by the first steam inlet 13, is discharged by the second steam (vapor) outlet 15.
Wherein, the second air inlet 12 and the first steam inlet 13 are respectively arranged at the top and bottom of the second heat-exchanger rig 9,
So that the flow direction of the first steam and second gas on the contrary, realize the first steam and the countercurrent flow of second gas, improves remaining
Heat recovery efficiency.
The present embodiment provides a kind of residual neat recovering system, including：First heat-exchanger rig and the second heat-exchanger rig；This first is changed
The inner wall surrounding of thermal is provided with water-cooling wall, and the water-cooling wall surround and forms the first cavity；Formed between the water-cooling wall and the inwall
Second cavity；First cavity connects with second cavity；Second heat-exchanger rig is internally provided with the first heat-exchanging tube bundle, and this
There is the 3rd cavity between the inwall of one heat-exchanging tube bundle and second heat-exchanger rig；First gas passes sequentially through first cavity, is somebody's turn to do
Second gas is exported after second cavity to first heat-exchanging tube bundle；The temperature of the first gas is more than the temperature of the second gas；
Water with the first preset temperature is by exporting the first steam to the 3rd cavity after the water-cooling wall so that the 3rd cavity exports
Second steam；The temperature of second steam is more than the temperature of first steam.The utility model by setting multiple heat-exchanger rigs,
The waste heat of first gas repeatedly reclaim and utilize, improves the recycling efficiency of gas waste-heat, while without setting
Superheater, the purpose of energy-saving and emission-reduction is reached.
Meanwhile the residual neat recovering system shown in the present embodiment Fig. 1, due to can be by setting multiple heat-exchanger rigs to carry out successively
Exchanged heat, so as to produce the second higher steam of temperature, without setting superheater, save the operation of residual neat recovering system into
This, while realizes the abundant recovery to gas waste-heat, more efficiently, environmental protection.
Optionally, the utility model also provides a kind of residual neat recovering system.Fig. 2 is more than another kind provided by the utility model
Heat recovery system schematic diagram.As shown in Fig. 2 another residual neat recovering system provided by the utility model is compared to Figure 1, also wrap
Include：First drum 16.
First steam is exported to the 3rd cavity 11 by the first drum 16.
Water with the second preset temperature passes through the first drum 16 so that the output of the first drum 16 has the first preset temperature
Water to water-cooling wall 2.
Specifically, second preset temperature can for example be equal to first preset temperature, first preset temperature and this
Two preset temperatures can be normal temperature or low temperature.
First drum 16 can be provided in above the first heat-exchanger rig.Wherein, between the first drum 16 and water-cooling wall 2
Steam/water circulating can be Natural Circulation, and water pump can also be set to carry out forced circulation between the first drum 16 and water-cooling wall 2, with
Improve waste heat recovery efficiency.
The first drum 16 that the present embodiment provides, enter water-filling available for caused first steam in the first heat-exchanger rig 1
Vapour separates, while it is the offer water of water-cooling wall 2 that the first drum 16 is also sustainable, and the first drum 16 and water-cooling wall 2 form carbonated drink and followed
Loop system so that the 1 sustainable carry out waste heat recovery of the first heat-exchanger rig, improve waste heat recovery efficiency.
Optionally, the utility model also provides a kind of residual neat recovering system.Wherein, Fig. 3 goes back to be provided by the utility model
A kind of residual neat recovering system schematic diagram.System as shown in Figure 3, compared with Fig. 2, in addition to the 3rd heat-exchanger rig 17, the 3rd changes
Thermal 17 is internally provided with the second heat-exchanging tube bundle 18, has the between the inwall of the second heat-exchanging tube bundle 18 and the 3rd heat-exchanger rig 17
Four cavitys 19；
First heat-exchanging tube bundle 10 also exports third gas to the second heat-exchanging tube bundle 18；The temperature of the third gas be less than this
The temperature of two gases；
Water with the 3rd preset temperature is by exporting the 3rd steam after the 4th cavity 19；
Third gas is by exporting the 4th gas after the second heat-exchanging tube bundle 18；The temperature of 4th gas is less than third gas
Temperature.
For example, the 3rd air inlet 20, the second water inlet 21, the and of the 3rd gas outlet 22 are provided with outside the 3rd heat-exchanger rig 17
3rd steam (vapor) outlet 23；Wherein, the second gas outlet 14 is connected with the 3rd air inlet 20, the 3rd air inlet 20 and the second heat-exchanging tube bundle
18 connections, the second heat-exchanging tube bundle 18 are connected with the 3rd gas outlet 22, and the second water inlet 21 is connected with the 4th cavity 19, the 4th cavity
19 are connected with the 3rd steam (vapor) outlet 23.Wherein, the second gas outlet 14 can be connected with the 3rd air inlet 20 by gas pipeline, the gas
Expansion joint is also provided with body pipeline, the expansion joint can be used for absorbing the gas pipeline and producing due to reasons such as expanded by heating
Change in size.Wherein, the second gas outlet 14 is connected with the 3rd air inlet 20 by flange with the gas pipeline.
Water with the 3rd preset temperature enters the 4th cavity 19 by the second water inlet 21 so that the 3rd steam (vapor) outlet 23
Export the 3rd steam.
The third gas enters the second heat-exchanging tube bundle 18 by the 3rd air inlet 20 so that the 3rd gas outlet 22 output the 4th
Gas.
Specifically, the 3rd preset temperature can for example be equal to first preset temperature and second preset temperature, and, should
First preset temperature, second preset temperature and the 3rd preset temperature can be normal temperature or low temperature.The third gas temperature example
It such as can be 410 DEG C, the 4th gas temperature for example can be 170 DEG C.
By the second heat-exchanging tube bundle 18, the water with the 3rd preset temperature is passed through in the 4th cavity 19 third gas, by
It is arranged in the second heat-exchanging tube bundle 18 in the 4th cavity 19, and the temperature of the reclaimed water of the 4th cavity 19 is less than the temperature of the third gas
Degree, therefore, during third gas is passed through the second heat-exchanging tube bundle 18, the third gas is entered with the water being passed through in the 4th cavity 19
Row heat exchange so that the 3rd steam is produced in the 4th cavity 19.
During work, the water of normal temperature is inputted in the 4th cavity 19, the third gas heats to the water of the normal temperature, produces
3rd steam, the 3rd steam can be low-temperature saturated steams.
The residual neat recovering system that the present embodiment provides, is additionally provided with the 3rd waste-heat recovery device, can enter one to gas waste-heat
Step recycles, and improves the recycling efficiency of fume afterheat.
Optionally, the first heat-exchanger rig 1 provided by the utility model, the second heat-exchanger rig 9, the 3rd heat-exchanger rig 17 combine
Formula is set, and is vertical so that residual neat recovering system is more compact, reduces floor space, and system architecture is simple, drop
Low manufacturing cost, easy care.
Optionally, the utility model also provides a kind of residual neat recovering system.Fig. 4 is to be provided by the utility model more than another
Heat recovery system schematic diagram.As shown in figure 4, also a kind of residual neat recovering system provided by the utility model also wraps compared with Fig. 3
Include：Second drum 24.
3rd steam after the second drum 24 by exporting.
Water with the 4th preset temperature passes through the second drum 24 so that the output of the second drum 24 has the 3rd preset temperature
Water to the 4th cavity 19.
Specifically, the 4th preset temperature can for example be equal to first preset temperature, second preset temperature and this
Three preset temperatures, first preset temperature, second preset temperature, the 3rd preset temperature and the 4th preset temperature can be
Normal temperature or low temperature.
Second drum 24 can be provided in the top of the 3rd heat-exchanger rig 17.Wherein, the second drum 24 and the 4th cavity
Steam/water circulating between 19 can be Natural Circulation, and water pump can also be set to carry out between the second drum 24 and the 4th cavity 19
Forced circulation, to improve waste heat recovery efficiency.
The second drum 24 that the present embodiment provides can supply water to the 4th cavity 19 and to caused in the 3rd heat-exchanger rig 17
3rd steam carries out steam-water separation, and the steam after final output steam-water separation, the steam can be used for insulation of equipment etc..Second drum
24 and the 4th cavity 19 form steam-water circulation system so that the 17 sustainable carry out waste heat recovery of the 3rd heat-exchanger rig, improve remaining
Heat recovery efficiency.
Further, as in Fig. 1-Fig. 4 it is any shown in residual neat recovering system in, the water-cooling wall 2 in the first heat-exchanger rig 1
Including：At least one layer of water-cooling wall；The water-cooling wall away from inwall surround and forms the first cavity 3 at least one layer of water-cooling wall；At least one
In layer water-cooling wall the second cavity 4 is formed between the water-cooling wall and inwall of inwall；Wherein, it is also formed between the water-cooling wall of adjacent layer
Cavity.
First heat-exchanger rig provided by the utility model, by setting multilayer water wall structure, it may be such that the first heat exchange fills
Put interior high-temperature gas and water-cooling wall contact area is bigger, improve waste heat recovery efficiency.
Optionally, as in any shown residual neat recovering system in Fig. 1-Fig. 4, the bottom of the first cavity 3 is additionally provided with tank
25 so that first gas enters after the first cavity 3 by being exported after tank to the second cavity 4.
Specifically, a large amount of solid impurities, such as lime-ash, to each device in residual neat recovering system may be contained in first gas
Part is caused to wash away and worn, meanwhile, solid impurity is also liable to stick to the inner surface of each heat-exchanger rig in residual neat recovering system, difficult
To clear up, the normal operation of residual neat recovering system is influenceed.
First heat-exchanger rig provided by the utility model, by setting tank 25 in the first cavity bottom so that into the
The high-temperature flue gas of one cavity 3 must could enter the second cavity 4, the process that first gas passes through the tank 25 by tank 25
In, gas flow direction changes, and the solid impurity in the first gas falls into tank in the presence of inertia, realizes
The separation of one gas and solid impurity, avoid residual neat recovering system equipment attrition and dead band dust stratification.
Optionally, tank 25 may include moisturizing pipeline and water seal, and the moisturizing pipeline can be used for supplying water to tank 25, the water seal
For completely cutting off first gas, the first gas leakage of the first tank 25 is avoided passing through.
Optionally, as in any shown residual neat recovering system in Fig. 1-Fig. 4, the bottom of tank 25 is connected with collector
26；Collector 26 is used to collect the solid impurity in first gas.
Specifically, collector 26 is connected with tank 25, and when the first gas is by tank 25, the solid impurity meeting in gas
The bottom of tank 25 is stayed in, hence into collector 26.
First heat-exchanger rig 1 provided by the utility model, by setting collector 26, by the solid impurity in first gas
Collector 26 collects discharge so that water in tank reusable edible after cooling, more saves the energy.
Optionally, the bottom of tank 25 connects collector 26 by flange.
Specifically, collector 26 is dismountable, if impurity is excessive in collector 26, collector 26 can be disassembled
Cleared up, it is achieved thereby that the recycling of collector 26, more environmentally-friendly.
Optionally, optionally, in the residual neat recovering system as shown in any in Fig. 1-Fig. 4, the inside of the first heat-exchanger rig 1 is also
Deflector 27 is provided with, deflector 27 is used to import first gas in the first cavity 3.
Specifically, deflector 27 is arranged on the both sides of the first air inlet 5, deflector 27 is used to first gas importing the first chamber
In body 3, prevent the first gas from directly washing away the water screen tube of internal layer.
First heat-exchanger rig provided by the utility model, by setting deflector 27 above the first cavity 3, avoid containing ash
The flue gas damage internal layer water screen tube of slag.
First heat-exchanger rig 1 provided by the utility model, inside be disposed with from top to bottom deflector 27, tank 25 with
And collector 26, the first gas into the first air inlet 5 enter the first cavity in the presence of deflector 27, avoid this
One gas directly washes away the water screen tube of internal layer, and then enters the second cavity 4 by tank 25 so that consolidating in the first gas
Body impurity is sunk in collector 26, solves the problems, such as waste-heat recovery device dust stratification and abrasion so that the residual neat recovering system life-span
It is longer, it is more environmentally-friendly.
Finally it should be noted that：Various embodiments above is only to illustrate the technical solution of the utility model, rather than it is limited
System；Although the utility model is described in detail with reference to foregoing embodiments, one of ordinary skill in the art should
Understand：It can still modify to the technical scheme described in foregoing embodiments, either to which part or whole
Technical characteristic carries out equivalent substitution；And these modifications or replacement, the essence of appropriate technical solution is departed from this practicality newly
The scope of each embodiment technical scheme of type.
Claims (9)
- A kind of 1. residual neat recovering system, it is characterised in that including：First heat-exchanger rig and the second heat-exchanger rig；The inner wall surrounding of first heat-exchanger rig is provided with water-cooling wall, and the water-cooling wall surround and forms the first cavity；The water The second cavity is formed between cold wall and the inwall；First cavity connects with second cavity；Second heat-exchanger rig is internally provided with the first heat-exchanging tube bundle, first heat-exchanging tube bundle and second heat-exchanger rig Inwall between there is the 3rd cavity；Second cavity is also connected with first heat-exchanging tube bundle, and the water-cooling wall is also connected with the 3rd cavity；First gas exports second gas to first heat exchanger tube after passing sequentially through first cavity, second cavity Beam；The temperature of the first gas is more than the temperature of the second gas；Water with the first preset temperature is by exporting the first steam to the 3rd cavity after the water-cooling wall so that described Three cavitys export the second steam；The temperature of second steam is more than the temperature of first steam.
- 2. system according to claim 1, it is characterised in that the system also includes：First drum；First steam is exported to the 3rd cavity by first drum；Water with the second preset temperature passes through first drum so that the first drum output is described to have first to preset The water of temperature is to the water-cooling wall.
- 3. system according to claim 1, it is characterised in that also including the 3rd heat-exchanger rig, the 3rd heat-exchanger rig It is internally provided with the second heat-exchanging tube bundle, there is the 4th chamber between the inwall of second heat-exchanging tube bundle and the 3rd heat-exchanger rig Body；First heat-exchanging tube bundle also exports third gas to second heat-exchanging tube bundle；The temperature of the third gas is less than institute State the temperature of second gas；Water with the 3rd preset temperature is by exporting the 3rd steam after the 4th cavity；The third gas is by exporting the 4th gas after second heat-exchanging tube bundle；The temperature of 4th gas is less than described The temperature of third gas.
- 4. system according to claim 3, it is characterised in that the system also includes：Second drum；3rd steam after second drum by exporting；Water with the 4th preset temperature passes through second drum so that the second drum output is described to have the 3rd to preset The water of temperature is to the 4th cavity.
- 5. according to the system any one of claim 1-4, it is characterised in that the water-cooling wall includes：At least one layer of water Cold wall；The water-cooling wall away from the inwall surround and forms first cavity at least one layer of water-cooling wall；Described at least one In layer water-cooling wall the second cavity is formed between the water-cooling wall and the inwall of the inwall；Wherein, between the water-cooling wall of adjacent layer It is also formed with cavity.
- 6. according to the system any one of claim 1-4, it is characterised in that first cavity bottom is additionally provided with water Groove so that the first gas enters after first cavity by being exported after the tank to second cavity.
- 7. system according to claim 6, it is characterised in that the bottom of the tank is connected with collector；The collection Device is used to collect the solid impurity in the first gas.
- 8. system according to claim 7, it is characterised in that the bottom of the tank connects the collection by flange Device.
- 9. according to the system any one of claim 1-4, it is characterised in that also set up inside first heat-exchanger rig There is deflector, the deflector is used to import the first gas in first cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720338760.2U CN206724123U (en) | 2017-04-01 | 2017-04-01 | Residual neat recovering system |
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| CN106895384A (en) * | 2017-04-01 | 2017-06-27 | 安徽科达洁能股份有限公司 | Residual neat recovering system |
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