CN206669783U - A kind of low-temperature flue gas used heat secondary recycling system - Google Patents
A kind of low-temperature flue gas used heat secondary recycling system Download PDFInfo
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- CN206669783U CN206669783U CN201721034384.4U CN201721034384U CN206669783U CN 206669783 U CN206669783 U CN 206669783U CN 201721034384 U CN201721034384 U CN 201721034384U CN 206669783 U CN206669783 U CN 206669783U
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/30—Technologies for a more efficient combustion or heat usage
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Abstract
A kind of low-temperature flue gas used heat secondary recycling system is the utility model is related to, it includes, and fume waste heat once recycles unit, fume waste heat secondary recovery utilizes oil pump, drying heat-sink unit and fume waste heat second-time recycling device using heat conduction fuel tank, fume waste heat secondary recovery；The output end connection fume waste heat secondary recovery that fume waste heat once recycles unit utilizes heat conduction fuel tank input, input connection fume waste heat second-time recycling device output end；Fume waste heat secondary recovery utilizes the input of oil pump using the output end connection fume waste heat secondary recovery of heat conduction fuel tank, and fume waste heat secondary recovery utilizes oil pump output end connection drying heat-sink unit input；Dry the input of heat-sink unit output end connection fume waste heat second-time recycling device；Fume waste heat second-time recycling device is also utilized from weighing area with fume waste heat secondary recovery and is bi-directionally connected.The utility model scope of application is wider, easy for operation, and recovery utilization rate is high, effect is good.
Description
Technical field
It the utility model is related to fume waste heat recovery cascade utilization technical field, and in particular to a kind of low-temperature flue gas used heat two
Secondary recycling system.
Background technology
Industrial waste heat is divided by temperature range, can be divided into the high temperature waste hot that temperature is higher than 500 DEG C, 250~500 DEG C of medium temperature
Used heat and the low-temperature waste heat less than 250 DEG C.At present, high temperature used heat becauseValue is high, and energy-saving and emission-reduction benefit is obvious after recycling,
Paid attention to by domestic and international scientific research personnel, corresponding achievement in research, such as cogeneration of heat and power, thermoelectric cold cogeneration are pushed greatly
Extensively.But such high temperature waste heat source is essentially from a limited number of large-scale high energy-consuming enterprises such as electric power, coal, metallurgy, and it is hot
The gas or coal burning devices such as homogeneous solution-type reactor, low temperature kiln are only the common common equipment of most enterprises.The separate unit used heat of these equipment
Amount is little,It is worth low, Carnot efficiency is low during Waste Heat Recovery, and the big cost of recovery difficult is high, and this, which allows for low-temperature waste heat, turns into industry
Common and easy ignored a kind of waste heat source, people are not also high to its attention rate in enterprise.However, this kind equipment is being looked forward to
Recoverable amount in industry is huge, how to improve the recovery utilization rate of such used heat and turns into a research emphasis urgently to be resolved hurrily.
2014, the low-temperature flue gas that my company have developed a set of modular comprehensive high-efficiency for certain enterprise's slush moulding kiln gas gave up
Recuperation of heat utilizes system, solves above mentioned problem well, instead of the electric heater unit of original NCS IP preheating furnaces, and in the winter
Season is to be heated from weighing area, achieves significant social and economic benefit.After the system puts into operation, enterprise finds slush moulding stove
The returning-oil temperature of exhaust gas temperature and system conduction oil is still very high, can also carry out used heat secondary recovery utilization.My company is in former low temperature
On the basis of fume waste heat recovery gradient utilization system, a set of used heat secondary recovery range site is added, instead of enterprise's baking
The dry original electric heater unit of stove, further increase the recycling efficiency of whole system.
The content of the invention
In view of the above-mentioned problems, the utility model proposes a kind of reasonable in design, easy for operation, recovery utilization rate
Low-temperature flue gas used heat secondary recycling system high, effect is good.
The technical solution of the utility model is as follows：
Above-mentioned low-temperature flue gas used heat secondary recycling system, including fume waste heat once recycle unit；It is described
System also includes fume waste heat secondary recovery and utilizes oil pump, drying heat-sink unit using heat conduction fuel tank, fume waste heat secondary recovery
With fume waste heat second-time recycling device；The output end that the fume waste heat once recycles unit connects the fume waste heat two
The secondary input for recycling heat conduction fuel tank, the input connection flue gas that the fume waste heat once recycles unit give up
The output end of hot second-time recycling device；The fume waste heat secondary recovery connects the flue gas using the output end of heat conduction fuel tank and given up
Hot secondary recovery utilizes the input of oil pump, and the fume waste heat secondary recovery is dissipated using the output end connection drying of oil pump
The input of hot cell；The output end of the drying heat-sink unit connects the input of the fume waste heat second-time recycling device；
Meanwhile the fume waste heat second-time recycling device is also utilized from weighing area with fume waste heat secondary recovery and is bi-directionally connected.
The low-temperature flue gas used heat secondary recycling system, wherein：The fume waste heat once recycles unit
Output end and the fume waste heat secondary recovery are using being connected with stop valve J1 between the input of heat conduction fuel tank；The flue gas gives up
Hot secondary recovery is connected with first filter using the output end of heat conduction fuel tank and connects a pair simultaneously by the first filter
The fume waste heat secondary recovery of connection utilizes the input of oil pump；The first filter flue gas in parallel with a pair gives up
Hot secondary recovery is using being connected to stop valve J2 and J3 between the input of oil pump.
The low-temperature flue gas used heat secondary recycling system, wherein：The drying heat-sink unit includes radiator, drying
Stove and blower fan；The radiator includes the first radiator and the second radiator；The drying oven includes the first drying oven and second
Drying oven；The blower fan includes the first blower fan and the second blower fan；The output end of first drying oven connects first blower fan
Input；Temperature sensor T3 is installed inside first drying oven, for the first blower fan described in automatic feedback control
Rotating speed；The output end of second drying oven connects the input of second blower fan；It is provided with inside second drying oven
Temperature sensor T4, the rotating speed for the second blower fan described in automatic feedback control.
The low-temperature flue gas used heat secondary recycling system, wherein：A pair of fume waste heat secondary recoveries in parallel
Check-valves H1 and temperature sensor T1 have been sequentially connected in series using the output end of oil pump；The temperature sensor T1 is used to measure and entered
The oil temperature of the radiator and first radiator and the second radiator are connected respectively；The check-valves H1 is in parallel with a pair
The fume waste heat secondary recovery is using being connected to stop valve J4 and J5, the temperature sensor between the output end of oil pump
Stop valve J6, the temperature sensor T1 and described second are connected between T1 and the one of input of the first radiator
Stop valve J7 is connected between the one of input of radiator；Another input connection described first of first radiator
The output end of blower fan, another input of the second radiator connect the output end of second blower fan.
The low-temperature flue gas used heat secondary recycling system, wherein：The fume waste heat second-time recycling device includes plate
Formula heat exchanger；The one of output end of first radiator connects the input of first drying oven, first radiating
Another output end of device connect respectively the fume waste heat once recycle the input of unit and the plate type heat exchanger its
In an input；Another output end of first radiator passes sequentially through stop valve J8, stop valve J9, temperature sensor T2
It is connected to the input that the fume waste heat once recycles unit；Another output end of first radiator also passes sequentially through
The stop valve J8, the one of input of the stop valve J11 connections plate type heat exchanger；Second radiator one of them
Output end connects the input of second drying oven, and another output end of second radiator connects the fume waste heat one
The secondary input for recycling unit and the one of input of the plate type heat exchanger；Another output of second radiator
End, which passes sequentially through stop valve J12, the stop valve J9, the temperature sensor T2 and is connected to the fume waste heat, once reclaims profit
With the input of unit；Another output end of second radiator also passes sequentially through the stop valve J12, the stop valve J11
Connect the one of input of the plate type heat exchanger；Meanwhile the fume waste heat once recycle the output end of unit with
Stop valve J13 is also associated between the output end of the stop valve J9.
The low-temperature flue gas used heat secondary recycling system, wherein：The fume waste heat second-time recycling device also includes
Fume waste heat secondary recovery utilizes water circulating pump using water tank and fume waste heat secondary recovery；Wherein the one of the plate type heat exchanger
Individual output end, which passes sequentially through stop valve J10 and temperature sensor T2 and is connected to the fume waste heat, once recycles the defeated of unit
Enter end, another output end of the plate type heat exchanger connects the fume waste heat secondary recovery using the input from weighing area
End；The fume waste heat secondary recovery connects the fume waste heat secondary recovery using the input of water tank and utilized from weighing area
Output end；The fume waste heat secondary recovery is using being additionally provided with ultra-soft water water supplement port at the top of water tank；The fume waste heat is secondary
The input for recycling water circulating pump connects the output end that the fume waste heat secondary recovery utilizes water tank, the fume waste heat
Secondary recovery connects another input of plate type heat exchanger using the output end of water circulating pump.
The low-temperature flue gas used heat secondary recycling system, wherein：The fume waste heat once recycles unit bag
Include fume waste heat once recycle heat conduction fuel tank, fume waste heat once recycle oil pump, the first fume waste heat retracting device,
Second fume waste heat retracting device and NCS IP preheating furnaces；
The input that the fume waste heat once recycles heat conduction fuel tank connects the temperature sensor T2, the flue gas
The output end that used heat once recycles heat conduction fuel tank is connected with the second filter and connected a pair by second filter
The fume waste heat in parallel once recycles the input of oil pump, second filter flue gas in parallel with a pair
Used heat is connected to stop valve J14 and stop valve J15 between once recycling the input of oil pump；
The output end that a pair of fume waste heats in parallel once recycle oil pump is connected to check-valves H2 and H3,
The check-valves H2 connects the input of the first fume waste heat retracting device, the check-valves with H3 by stop valve J16
H2 connects the input of the second fume waste heat retracting device with H3 by stop valve J17；
The input of the output end of the first fume waste heat retracting device and the second fume waste heat retracting device it
Between be connected with stop valve J18；The output end of the first fume waste heat retracting device also passes sequentially through stop valve J19 and temperature passes
The input of the sensor T5 connections NCS IP preheating furnaces；The output end of the second fume waste heat retracting device, which passes sequentially through, cuts
Only valve J20, the input of the temperature sensor T5 connections NCS IP preheating furnaces；Also pacify inside the NCS IP preheating furnaces
Equipped with temperature sensor T6.
Beneficial effect：
The utility model is according to the general principle of heat transfer, with Modern Sensor Technology, automatic measurement and control technology
With efficient hot swapping, a set of industrial low-temperature fume waste heat recovery full-automatic, man-machine interface is friendly and step are developed
Using system, its is reasonable in design, easy for operation, has higher Waste Heat Recovery utilization rate, can bring significant
Energy saving profit；The utility model uses modularized design, can root with focus such as NCS IP preheating furnaces, drying oven, from weighing area etc.
Specific according to different enterprises is changed with hot situation, so as to meet the requirement of different applying working conditions under industrial process conditions, tool
There is certain versatility.In addition, the utility model can be according to environment temperature and multiple fluctuations with focus the mount of using heat, Real-time Feedback
Waste Heat Recovery amount and usage amount are controlled, realizes the full-automatic dynamic regulation of whole system, to meet enterprise's production or life heat
Need, successfully solve that homogeneous system Waste Heat Recovery utilization rate is low, and precision hand-manipulated is low and the problems such as being not easy to grasp.
Brief description of the drawings
Fig. 1 is the structured flowchart of the utility model low-temperature flue gas used heat secondary recycling system；
Fig. 2 is the structure principle chart of the utility model low-temperature flue gas used heat secondary recycling system；
Fig. 3 is another structure principle chart of the utility model low-temperature flue gas used heat secondary recycling system.
Embodiment
As shown in Figures 1 to 3, the utility model low-temperature flue gas used heat secondary recycling system, including fume waste heat is once
Recycle unit 1, fume waste heat secondary recovery is dissipated using heat conduction fuel tank 2, fume waste heat secondary recovery using oil pump 3, drying
Hot cell 4 and fume waste heat second-time recycling device 5.Wherein, fume waste heat once recycle unit 1, drying heat-sink unit 4,
It can be adjusted from Waste Heat Reuse ends such as the heat supply in winter of weighing area 6 according to the actual of enterprise with heat demand, so that whole system
The scope of application of system is wider, and Waste Heat Recovery utilization rate is higher.
The drying heat-sink unit 4 includes radiator 41, drying oven 42 and blower fan 43；The radiator 41 includes the first radiator
411 and second radiator 412；The drying oven 42 includes the first drying oven 421 and the second drying oven 422；The blower fan 43 includes the
One blower fan 431 and the second blower fan 432.
The fume waste heat second-time recycling device 5 includes plate type heat exchanger 51, fume waste heat secondary recovery utilizes the and of water tank 52
Fume waste heat secondary recovery utilizes water circulating pump 53.
The output end connection fume waste heat secondary recovery that the fume waste heat once recycles unit 1 utilizes heat conduction fuel tank 2
Input, the fume waste heat once recycles the output of the input connection fume waste heat second-time recycling device 5 of unit 1
End.
The fume waste heat secondary recovery utilizes oil pump 3 using the output end connection fume waste heat secondary recovery of heat conduction fuel tank 2
Input, the fume waste heat secondary recovery using oil pump 3 output end connection drying heat-sink unit 4 input；The drying
The input of the output end connection fume waste heat second-time recycling device 5 of heat-sink unit 4；Meanwhile the fume waste heat secondary recovery fills
5 are put also to be bi-directionally connected using from weighing area 6 with fume waste heat secondary recovery.
The fume waste heat once recycles the output end of unit 1 and fume waste heat secondary recovery utilizes heat conduction fuel tank 2
Stop valve J1 is connected between input.Wherein, the fume waste heat secondary recovery is connected with using the output end of heat conduction fuel tank 2
One filter 21 simultaneously connects input of a pair of fume waste heat secondary recoveries in parallel using oil pump 3 by first filter 21；
The first filter 21 fume waste heat secondary recovery in parallel with a pair is connected to cut-off between the input using oil pump 3
Valve J2 and J3.A pair of fume waste heat secondary recoveries in parallel only have an operation using oil pump 3 in system operation, and another is
Standby, when operation oil pump breaks down, system can automatically switch to emergency bearing oil pump, so as to ensure system normal operation, and can
By closing the stop valve being connected with failure oil pump input and output side, to be examined under system running state to failure oil pump
Repair.
This pair fume waste heat secondary recoveries in parallel have been sequentially connected in series check-valves H1 and temperature using the output end of oil pump 3
Sensor T1；Temperature sensor T1 is used to measure the oil temperature into radiator 41, and it connects the first radiator of radiator 41
411 and second radiator 412；Fume waste heat secondary recovery in parallel with a pair check-valves H1 using oil pump 3 output end it
Between be connected to stop valve J4 and J5, connected between 411 one of input of temperature sensor T1 and the first radiator
There is stop valve J6, stop valve J7, this section are connected between 412 one of input of temperature sensor T1 and the second radiator
Only valve J6 and J7 can control the heat conduction oil mass into radiator 41, and then expand the modification scope to temperature in drying oven 42.
First drying oven 421 of 411 one of output end connection drying oven 42 of the first radiator of the radiator 41
Input, another output end connect fume waste heat and once recycle the input of unit 1 with plate type heat exchanger 51 wherein respectively
One input；Wherein, 411 another output end of the first radiator passes sequentially through stop valve J8, stop valve J9, temperature sensor
T2 is connected to the input that fume waste heat once recycles unit 1；First radiator, 411 another output end also passes sequentially through
Stop valve J8,51 one of input of stop valve J11 connecting plate types heat exchanger.Stop valve J10 and J11 in the winter time when open,
Conduction oil oil mass size into plate type heat exchanger 51 can be controlled by stop valve J9 aperture size, and then controlled to board-like
In the other end water of heat exchanger 51 discharge heat number；When stop valve J10 and J11 closing, stop valve J9 standard-sized sheets, can isolate
Fume waste heat second-time recycling device 5, this can both prevent water fouling in plate type heat exchanger 51, can also be to whole water circulation system
System is overhauled.
The input of second drying oven 512 of 412 one of output end of the second radiator connection drying oven 51, it is another
Output end connection fume waste heat once recycles the input and 51 one of input of plate type heat exchanger of unit 1；Wherein,
Second radiator, 412 another output end passes sequentially through stop valve J12, stop valve J9, temperature sensor T2 and is connected to flue gas and gives up
Heat once recycles the input of unit 1；Second radiator, 412 another output end also passes sequentially through stop valve J12, cut-off
51 one of input of valve J11 connecting plate types heat exchanger.Meanwhile the fume waste heat once recycles the output end of unit 1
Stop valve J13 is also associated between stop valve J9 output end or temperature sensor T2 input.When stop valve J13 is beaten
Open, when stop valve J1 is closed, low-temperature flue gas used heat secondary recycling system can be isolated, at this moment can be to whole low-temperature flue gas
Used heat secondary recycling system is overhauled the normal operation that unit is once recycled without influenceing low-temperature flue gas used heat.
The input of first blower fan 431 of the output end connecting fan 43 of the first drying oven 421 of the drying oven 42；This
Temperature sensor T3 is installed inside one drying oven 421, for the rotating speed of the first blower fan 431 of automatic feedback control blower fan 43,
And then the flow of recirculated hot air in the first drying oven 421 is controlled, so as to which the temperature stabilization in the first drying oven 421 produced
Within the scope of design temperature required by technique；Second blower fan 432 of the output end connecting fan 43 of second drying oven 422
Input, temperature sensor T4 is installed inside second drying oven 422, the second blower fan for automatic feedback control blower fan 43
432 rotating speed, and then the flow of recirculated hot air in the second drying oven 422 is controlled, so as to by the temperature in the second drying oven 422
Stabilization is within the scope of the design temperature required by production technology.
Output end connection 411 another input of the first radiator of first blower fan 431 of the blower fan 43, the second blower fan 432
Output end connection 412 another input of the second radiator.
One of output end of the plate type heat exchanger 51 passes sequentially through stop valve J10 and temperature sensor T2 is connected to cigarette
Gas used heat once recycles the input of unit 1, and another output end connection fume waste heat of the plate type heat exchanger 51 is secondary
It is oil-hydrothermal exchange to recycle the heat exchange undergone from the input of weighing area 6, the plate type heat exchanger 51, i.e. heat conduction
Partial heat in oil is transferred in water, and heat conduction oil temperature reduces, and water temperature rise, hot water is transported to from weighing area 6 again meets the winter
Season heating needs.
The fume waste heat secondary recovery connects the fume waste heat secondary recovery using the input of water tank 52 and utilized from dispensing
Between 6 output end.Wherein, the fume waste heat secondary recovery is additionally provided with ultra-soft water water supplement port using the top of water tank 52.
The fume waste heat secondary recovery connects the fume waste heat secondary recovery using the input of water circulating pump 53 and utilizes water
The output end of case 52, the fume waste heat secondary recovery utilize 51 another input of output end connecting plate type heat exchanger of water circulating pump 53
End.
As shown in figure 3, the fume waste heat once recycles unit 1 once recycles heat conduction fuel tank including fume waste heat
11st, fume waste heat once recycles oil pump 12, the first fume waste heat retracting device 13, the and of the second fume waste heat retracting device 14
NCS IP preheating furnaces 15.
The fume waste heat once recycles the input connection temperature sensor T2 of heat conduction fuel tank 11, the fume waste heat one
The secondary output end for recycling heat conduction fuel tank 11 is connected with the second filter 111 and connects a pair simultaneously by the second filter 111
The fume waste heat of connection once recycles the input of oil pump 12, and second filter 111 fume waste heat in parallel with a pair is once
Stop valve J14 and stop valve J15 are connected between the input of recycling oil pump 12.
The output end that this pair fume waste heats in parallel once recycle oil pump 12 is connected to check-valves H2 and H3,
Check-valves H2 connects the input of the first fume waste heat retracting device 13, check-valves H2 and H3 with H3 by stop valve J16
Pass through the input of stop valve J17 the second fume waste heats of connection retracting device 14.
Between the input of the output end of the first fume waste heat retracting device 13 and the second fume waste heat retracting device 14
It is connected with stop valve J18；The output end of the first fume waste heat retracting device 13 also passes sequentially through stop valve J19, TEMP
Device T5 connects the oil return pipe of the input of NCS IP preheating furnaces 15；The output end of the second fume waste heat retracting device 14 is led to successively
Cross stop valve J20, temperature sensor T5 connects the inputs of the NCS IP preheating furnaces 15.Wherein, the first fume waste heat recovery dress
Put 13 and the second stop valve opening and closing situation between fume waste heat retracting device 14 it is different, the He of the first fume waste heat retracting device 13
Operational mode between second fume waste heat retracting device 14 can have three kinds：Separate unit is run, two series operations, two parallel connections
Operation, can be according to the different Waste Heat Recovery operational mode of the different choice at Waste Heat Reuse end.
Temperature sensor T6 is also equipped with inside the NCS IP preheating furnaces 11.
The utility model is rational in infrastructure, and the scope of application is wider, and fume waste heat therein once recycles unit, drying dissipates
Hot cell, it can be adjusted according to the actual of enterprise with heat demand from the Waste Heat Reuse such as weighing area heat supply in winter end, so that
The Waste Heat Recovery utilization rate of whole system is higher, and energy-saving benefit is notable.
Claims (7)
1. a kind of low-temperature flue gas used heat secondary recycling system, including fume waste heat once recycle unit；Its feature exists
In：The system is also included fume waste heat secondary recovery and dissipated using heat conduction fuel tank, fume waste heat secondary recovery using oil pump, drying
Hot cell and fume waste heat second-time recycling device；
The output end connection fume waste heat secondary recovery that the fume waste heat once recycles unit utilizes heat conduction fuel tank
Input, the input that the fume waste heat once recycles unit connects the defeated of the fume waste heat second-time recycling device
Go out end；
The fume waste heat secondary recovery connects the fume waste heat secondary recovery using the output end of heat conduction fuel tank and utilizes oil pump
Input, the fume waste heat secondary recovery using oil pump output end connection it is described drying heat-sink unit input；Institute
The output end for stating drying heat-sink unit connects the input of the fume waste heat second-time recycling device；Meanwhile the fume waste heat
Second-time recycling device is also utilized from weighing area with fume waste heat secondary recovery and is bi-directionally connected.
2. low-temperature flue gas used heat secondary recycling system as claimed in claim 1, it is characterised in that：The fume waste heat one
It is secondary recycle unit output end and the fume waste heat secondary recovery using be connected between the input of heat conduction fuel tank cut
Only valve J1；
The fume waste heat secondary recovery is connected with first filter and by first mistake using the output end of heat conduction fuel tank
Filter connects the input that a pair of fume waste heat secondary recoveries in parallel utilize oil pump；
The first filter fume waste heat secondary recovery in parallel with a pair connects respectively using between the input of oil pump
It is connected to stop valve J2 and J3.
3. low-temperature flue gas used heat secondary recycling system as claimed in claim 1, it is characterised in that：The drying radiating is single
Member includes radiator, drying oven and blower fan；
The radiator includes the first radiator and the second radiator；The drying oven includes the first drying oven and the second drying
Stove；The blower fan includes the first blower fan and the second blower fan；
The output end of first drying oven connects the input of first blower fan；Temperature is installed inside first drying oven
Spend sensor T3, the rotating speed for the first blower fan described in automatic feedback control；Described in the output end connection of second drying oven
The input of second blower fan；Temperature sensor T4 is installed inside second drying oven, for described in automatic feedback control
The rotating speed of two blower fans.
4. low-temperature flue gas used heat secondary recycling system as claimed in claim 3, it is characterised in that：A pair in parallel described
Fume waste heat secondary recovery has been sequentially connected in series check-valves H1 and temperature sensor T1 using the output end of oil pump；The TEMP
Device T1 is used to measure the oil temperature for entering the radiator and connects first radiator and the second radiator respectively；
The fume waste heat secondary recovery in parallel with a pair the check-valves H1 connects respectively using between the output end of oil pump
There are stop valve J4 and J5, stop valve is connected between the temperature sensor T1 and the one of input of the first radiator
Stop valve J7 is connected between J6, the temperature sensor T1 and the one of input of the second radiator；
Another input of first radiator connects the output end of first blower fan, another input of the second radiator
End connects the output end of second blower fan.
5. low-temperature flue gas used heat secondary recycling system as claimed in claim 4, it is characterised in that：The fume waste heat two
Secondary retracting device includes plate type heat exchanger；
The one of output end of first radiator connects the input of first drying oven, first radiator it is another
One output end connect respectively the fume waste heat once recycle the input of unit and the plate type heat exchanger one of them
Input；Another output end of first radiator passes sequentially through stop valve J8, stop valve J9, temperature sensor T2 and is connected to
The fume waste heat once recycles the input of unit；Another output end of first radiator also passes sequentially through described cut
Only valve J8, the one of input of the stop valve J11 connections plate type heat exchanger；
The one of output end of second radiator connects the input of second drying oven, second radiator it is another
One output end connects input and the one of input of the plate type heat exchanger that the fume waste heat once recycles unit
End；Another output end of second radiator passes sequentially through stop valve J12, the stop valve J9, the temperature sensor T2
It is connected to the input that the fume waste heat once recycles unit；Another output end of second radiator also passes sequentially through
The stop valve J12, the one of input of the stop valve J11 connections plate type heat exchanger；
Meanwhile the fume waste heat is once recycled and is also connected between the output end of unit and the output end of the stop valve J9
There is stop valve J13.
6. low-temperature flue gas used heat secondary recycling system as claimed in claim 5, it is characterised in that：The fume waste heat two
Secondary retracting device also includes fume waste heat secondary recovery and utilizes water circulating pump using water tank and fume waste heat secondary recovery；
One of output end of the plate type heat exchanger passes sequentially through stop valve J10 and temperature sensor T2 is connected to the cigarette
Gas used heat once recycles the input of unit, and another output end of the plate type heat exchanger connects the fume waste heat two
The secondary input recycled from weighing area；
The fume waste heat secondary recovery connects the fume waste heat secondary recovery using the input of water tank and utilized from weighing area
Output end；The fume waste heat secondary recovery is using being additionally provided with ultra-soft water water supplement port at the top of water tank；
The fume waste heat secondary recovery connects the fume waste heat secondary recovery using the input of water circulating pump and utilizes water tank
Output end, the fume waste heat secondary recovery connects another input of plate type heat exchanger using the output end of water circulating pump
End.
7. low-temperature flue gas used heat secondary recycling system as claimed in claim 6, it is characterised in that：The fume waste heat one
Secondary recycling unit once recycles heat conduction fuel tank, fume waste heat including fume waste heat and once recycles oil pump, first
Fume waste heat retracting device, the second fume waste heat retracting device and NCS IP preheating furnaces；
The input that the fume waste heat once recycles heat conduction fuel tank connects the temperature sensor T2, the fume waste heat
The output end for once recycling heat conduction fuel tank is connected with the second filter and connects a pair of parallel connections by second filter
The fume waste heat once recycle the input of oil pump, second filter fume waste heat in parallel with a pair
Once stop valve J14 and stop valve J15 are connected between the input of recycling oil pump；
The output end that a pair of fume waste heats in parallel once recycle oil pump is connected to check-valves H2 and H3, described
Check-valves H2 connects the input of the first fume waste heat retracting device with H3 by stop valve J16, the check-valves H2 and
The input that H3 passes through stop valve J17 connections the second fume waste heat retracting device；
Connect between the input of the output end of the first fume waste heat retracting device and the second fume waste heat retracting device
It is connected to stop valve J18；The output end of the first fume waste heat retracting device also passes sequentially through stop valve J19 and temperature sensor
The input of the T5 connections NCS IP preheating furnaces；The output end of the second fume waste heat retracting device passes sequentially through stop valve
J20, the temperature sensor T5 connections NCS IP preheating furnaces input；It is also equipped with inside the NCS IP preheating furnaces
Temperature sensor T6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201721034384.4U CN206669783U (en) | 2017-08-17 | 2017-08-17 | A kind of low-temperature flue gas used heat secondary recycling system |
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| CN201721034384.4U CN206669783U (en) | 2017-08-17 | 2017-08-17 | A kind of low-temperature flue gas used heat secondary recycling system |
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| CN206669783U true CN206669783U (en) | 2017-11-24 |
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| CN201721034384.4U Expired - Fee Related CN206669783U (en) | 2017-08-17 | 2017-08-17 | A kind of low-temperature flue gas used heat secondary recycling system |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171124 Termination date: 20180817 |