CN105066724B - A kind of square equipment manufacture of cement waste heat recovery system of grate cooler - Google Patents
A kind of square equipment manufacture of cement waste heat recovery system of grate cooler Download PDFInfo
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- CN105066724B CN105066724B CN201510618031.8A CN201510618031A CN105066724B CN 105066724 B CN105066724 B CN 105066724B CN 201510618031 A CN201510618031 A CN 201510618031A CN 105066724 B CN105066724 B CN 105066724B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
- Y02P80/15—On-site combined power, heat or cool generation or distribution, e.g. combined heat and power [CHP] supply
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Abstract
The invention provides a kind of square equipment manufacture of cement waste heat recovery system of grate cooler, the grate-cooler includes shell, clinker passage, insulation material is set between shell and the clinker passage, waste heat recovery apparatus is set in insulation material, the waste heat recovery apparatus includes at least one cylinder, heat exchanger tube is set at least one described cylinder, and the cylinder is rectangle, and cylinder bottom is plane.The grate-cooler of the present invention can either fully absorb the sensible heat that clinker discharges in cooler during very fast cooling, reduce clinker energy consumption, utilization rate of waste heat can be effectively lifted again.
Description
Technical field
The present invention relates to a kind of heat recovery system of grate cooler, cooled down more particularly, to the comb formula in manufacture of cement
Machine heat recovery system, belongs to F27D UTILIZATION OF VESIDUAL HEAT INs, F28D field of heat exchangers.
Background technology
Grate cooler (abbreviation grate-cooler), is a kind of capital equipment in cement production process.Its basic function includes：
(1) appropriate clinker cooling speed is provided, to improve the grindability of cement quality and clinker；(2) as far as possible improve Secondary Air and
Tertiary air temperature, as combustion air, reduces firing system fuel consumption；(3) by remaining Hot-blast Heating, for cogeneration and coal
Mill drying；(4) clinker is crushed and is cooled to alap temperature, to meet clinker conveyor, storage and cement grinding
Requirement.Grate plate and grate structure are the most important parts of grate-cooler, and it determines the thickness of feed layer of grate, air feed is determined again
System and heat recovery efficiency, one, two, three, four generation grate-cooler products are mainly manifested in the improvement of the structure of grate plate and grate.
The basic structure that forth generation grate-cooler is commonly used in manufacture of cement is as shown in Figure 1：Grate-cooler 4 includes kiln head cover 2, cooling
Machine shell 3, high warm air outlet 5, low temperature wind outlet 6, clinker outlet 7 and blower fan 8, wherein clinker enter cooling from rotary kiln 1
Machine 4, is then transmitted, blower fan 8 is blown into grate-cooler 4 in the transmission channel in grate-cooler 4, is reduced by wind
The temperature of clinker, so as to carry out clinker cooling in transmitting procedure, the clinker after cooling is exported by clinker outlet 7.
But subject matter present in existing grate-cooler：Clinker cooling degree is not enough, the clinker temperature mistake of clinker outlet
Height, generally more than 200 DEG C.The consequence thereby resulted in is that cement production process energy consumption is higher, while influenceing the matter of finished cement again
Amount.
It is therefore desirable to research and develop a kind of new heat reclaim unit, clinker can either be fully absorbed very fast in cooler
The sensible heat discharged during cooling, reduces ton clinker energy consumption, and the quantity of UTILIZATION OF VESIDUAL HEAT IN electricity can be effectively lifted again.
The content of the invention
The present invention is for subject matter present in existing grate-cooler, it is proposed that a kind of square equipment manufacture of cement grate-cooler
Residual neat recovering system.
To achieve these goals, technical scheme is as follows：A kind of square equipment manufacture of cement grate-cooler waste heat
Recovery system, the grate-cooler includes setting insulation material between shell, clinker passage, shell and the clinker passage, is protecting
Waste heat recovery apparatus is set in adiabator.
Preferably, the waste heat recovery apparatus includes setting heat exchanger tube at least one cylinder, the cylinder.
Preferably, also including the device for pressure measurement of measurement barrel pressure, the device for pressure measurement is connected with cylinder
Connect.
Preferably, the waste heat recovery apparatus includes by connectivity structure entering between multiple cylinders, the multiple cylinder
Row connection, any one of the device for pressure measurement and multiple cylinders is attached.
Preferably, the outer surface of the bottom of the cylinder is sticked together with insulation material, the heat exchanger tube and cylinder
The inner surface of bottom has a certain distance.
Preferably, the cylinder is rectangle, cylinder bottom is plane.
Preferably, the heat exchanger tube is many, two at least adjacent pipe heat pipes are linked together by swan neck.
Preferably, the heat exchanger tube have it is multiple rows of, often arrange heat exchanger tube there are many.
Preferably, filling heat conduction or accumulation of heat porous material in cylinder.
Preferably, the device for pressure measurement can be replaced with temperature in use measurement apparatus or humidity measuring instrument.
Preferably, also there is clinker outlet temperature detection means on grate-cooler, the clinker temperature for detecting clinker outlet
Degree, the temperature-detecting device and control system data cube computation, the control system are detected according to outlet temperature detection means
The aperture of clinker temperature autocontrol valve, so as to control the flow into the fluid of heat exchanger tube；Exported when the clinker of detection
Temperature is too high, then the aperture of the automatic intensifying valve of control system, and increase enters the flow of the fluid of heat exchanger tube, if detection is ripe
Expect that the temperature of outlet is too low, then control system turns valve opening down automatically, reduce the flow for entering heat exchange pipe fluid.
Preferably, described control system control mode is as follows：Outlet temperature T represents to meet the clinker temperature of manufacture of cement
Degree condition, fluid flow V, above-mentioned outlet temperature T, flow V during temperature T into waste heat recovery apparatus are normal data, institute
The normal data storage stated is in the controls；
When outlet temperature is changed into t, flow v changes are as follows：
V=b*V* (t/T)a, wherein a is parameter, 1.06<a<1.10；It is preferred that, a=1.08；
B is regulation coefficient, (t/T)>1,0.97<b<1.00；Preferably 0.98；
(t/T)<1,1.00<b<1.04；Preferably 1.02；
(t/T)=1, b=1；
0.85<t/T<1.15。
In above-mentioned formula, temperature T, t are absolute temperature, and unit is K, and flow V, v unit are m/s, to enter UTILIZATION OF VESIDUAL HEAT IN
The total flow of equipment.
Preferably, the water in the heat exchanger tube can be delivered directly in convector, or pass through intermediate heat transfer
Device, transfers heat to heating water, and then heating water is entered back into convector and heated, and the convector includes
Upper header and lower collector pipe and the radiating tube of the triangular-section between upper header and lower collector pipe, the radiating tube include base
Pipe and the fin positioned at matrix periphery, the cross section of the base tube is isosceles triangle, and the fin includes first and dissipated
Backing and the second fin, first fin are stretched out from isosceles triangle drift angle, and second fin includes
Multiple fin extended outwardly where two waists from isosceles triangle and from the first fin stretch out it is many
Individual fin, the second fin extended to same direction is parallel to each other, first fin, the end of the second fin extension
Portion forms the second isosceles triangle；The substrate tube sets and sets second inside first fluid passage, first fin
Fluid passage, the first fluid passage is connected with second fluid passage；Second fin is relative in the first fin
Face specular where line, the distance of adjacent the second described fin is L1, the base length of the isosceles triangle
For W, the length of the waist of second isosceles triangle is S, meets equation below：
L1/S*100=A*Ln (L1/W*100)+B* (L1/W)+C, wherein Ln is logarithmic function, and A, B, C are coefficient, 0.68
<A<0.72,22<B<26,7.5<C<8.8；
0.09<L1/S<0.11,0.11<L1/W<0.13
4mm<L1<8mm
40mm<S<75mm
45mm<W<85mm
The drift angle of isosceles triangle is a, 110 °<a<160°.
Base tube length is L, 0.02<W/L<0.08,800mm<L<2500mm.
Compared with prior art, residual neat recovering system of the present invention has the following advantages：
1) the invention provides a kind of new waste heat recovery system of grate cooler, clinker can either be fully absorbed in cooler
In very fast cooling when the sensible heat that discharges so that the outlet temperature of clinker is changed into 100 DEG C, reduces ton clinker energy consumption, again can be effective
Lift the utilization of waste heat.
2) present invention has insulation material between waste heat recovery apparatus and clinker passage, can avoid passage high temperature
Air-flow directly washes away waste-heat recovery device, it is to avoid waste-heat recovery device booster or damage because of washing away for high temperature.
3) by setting device for pressure measurement, waste heat recovery apparatus is closed in time in the case where booster occurs for heat exchanger tube
Fluid flows into heat exchanger tube.
4) by setting cylinder, radiation heat transfer can be carried out to heat exchanger tube by cylinder or is passed by heat-conducting medium
Lead heat exchange, it is to avoid heat exchanger tube is directly directly contacted with the insulation material of high temperature, it is to avoid heat exchanger tube temperature too high generation booster.
5) intelligent control method that a kind of outlet temperature according to clinker automatically adjusts fluid flow in heat exchanger tube is provided,
The need for meeting production, the energy has been saved.
6) according to the frequency of grate-cooler clinker outlet temperature adjust automatically blower fan, so that the purpose for saving the energy is reached, with
Realize the intellectuality of production.
7) the invention provides the radiating tube that a kind of new residual heat system is used, and the fin of radiating tube is carried out rationally
Set, more fin can be arranged, therefore with good radiating effect.
Brief description of the drawings
Fig. 1 is the schematic diagram of grate-cooler；
Fig. 2 is grate-cooler waste heat recovery apparatus scheme of installation；
Fig. 3 is the schematic diagram of waste heat recovery apparatus structure；
Fig. 4 is the main structure diagram of radiator in residual neat recovering system；
Fig. 5 is the fluid passage relative position schematic diagram of radiator in residual neat recovering system；
Fig. 6 is the schematic diagram of Fig. 4 right side observation.
Reference is as follows：
1st, rotary kiln, 2, kiln head cover, 3, shell, 4, grate-cooler, 5, the outlet of high warm air, 6, the outlet of low temperature wind, 7, clinker goes out
Mouthful, 8, blower fan, 9, clinker passage, 10, insulation material, 11, waste heat recovery apparatus, 12, connectivity structure, 13, pipe plug, 14, cylinder
Body, 15, heat exchanger tube, 16, device for pressure measurement, 17, porous material, 18, swan neck, 19, base tube, 20, first fluid passage,
21st, the first fin, the 22, second fin, the 23, second fin, the 24, first waist, the 25, second waist, 26, second fluid lead to
Road, 27, base, 28, valve.
Embodiment
The embodiment to the present invention is described in detail below in conjunction with the accompanying drawings.
A kind of manufacture of cement waste heat recovery system of grate cooler, including grate-cooler, Fig. 1 illustrate a kind of manufacture of cement grate-cooler
4, grate-cooler 4 includes kiln head cover 2, grate-cooler shell 3, high warm air outlet 5, low temperature wind outlet 6, clinker outlet 7 and blower fan 8, its
Middle clinker enters grate-cooler 4 from rotary kiln 1, is then transmitted in the clinker passage 9 in grate-cooler 4, and blower fan 8 is to cooling
Blown in machine 4, the temperature of clinker is reduced by wind, so that clinker cooling is carried out in transmitting procedure, it is ripe after cooling
Material is exported by clinker outlet 7.
Clinker from rotary kiln 1 is transported in grate-cooler clinker passage 9, and the wind conveyed by blower fan is cooled down, institute
Setting insulation material 10 between shell 3 and clinker passage 9 is stated, as shown in Fig. 2 setting waste heat recovery apparatus in insulation material 10
11。
Certainly, the blower fan in Fig. 1 is only schematic diagram, and blower fan transports cooling wind and blown upwards along clinker channel bottom, with
Cool down the clinker in clinker passage.
Be waste heat recovery apparatus is set in insulation material, main cause is to find in operation, from clinker outlet
Clinker temperature out is too high, so as to influence the quality of finished cement, and it is too high to also result in the energy consumption in cement production process,
Therefore the energy consumption of the heat in Cement Cold being reclaimed by setting waste heat recovery apparatus but, further reduction manufacture of cement, is improved
The quality of finished cement.
Preferably, insulation material 10 is insulating brick.
Preferably, having insulation material 10 between the waste heat recovery apparatus 11 and clinker passage.As shown in Fig. 2
Two layers of insulating brick is set between waste heat recovery apparatus 11 and clinker passage 9.Why insulation material is set, and main cause is to avoid
Waste heat recovery apparatus 11 is directly contacted with the high-temperature flue gas in clinker passage 9 or directly washed away by high-temperature flue gas, causes waste heat
Reclaimer temperature is too high, or directly washes away and be easily damaged, heat-exchanging tube bundle in waste heat recovery apparatus can also be avoided because
High temperature and wash away and cause booster.
As shown in Fig. 2 preferably, the waste heat recovery apparatus includes at least one cylinder 14, at least one described cylinder
Heat exchanger tube 15 is set in body.
By setting cylinder 14, it is to avoid heat exchanger tube is directly contacted with insulation material so that the spoke that heat exchanger tube passes through cylinder 14
Penetrate or by porous material heat conduction, it is to avoid heat exchanger tube is because temperature is too high and occurs booster.
By setting cylinder, Another reason is once occur booster, then to avoid fluid from leaking, destroy insulation material.
Preferably, have certain space between cylinder 14 and heat exchanger tube 15, described space as be preferably filled with for
The porous material 17 of heat conduction or accumulation of heat.
Preferably, also including the device for pressure measurement 16 of measurement barrel pressure.The device for pressure measurement 16 is connected to
Cylinder 14, by measuring the pressure in cylinder 14, to check whether heat exchanger tube 15 occurs booster, once occur booster, then pressure
The measurement data of measurement apparatus 16 will be abnormal, then close the Fluid valve entered in heat exchanger tube 15 in time.
Preferably, the system also includes control system and valve 28, the control system carries out data with valve 28
Connection, opening and closing and the size of the flow of valve 28 for control valve 28.The control system is entered with device for pressure measurement 16
Row data cube computation, the pressure for detecting device for pressure measurement 16.Once the pressure of the device for pressure measurement 16 of control system detection
Power exceed predetermined value, then show pressure anomaly, it is likely that heat exchanger tube 15 occur booster, now control system control valve 28 from
It is dynamic to close.Pass through above-mentioned automatic control function so that monitoring process realizes automation.
Preferably, the waste heat recovery apparatus 11 includes passing through connectivity structure between multiple cylinders 14, the cylinder 14
12 are connected, and any one of the device for pressure measurement 16 and multiple cylinders 14 are attached.
By setting connectivity structure 12 so that the connection of multiple cylinders 14 is got up, once booster occurs for some cylinder, then because
The reason for for connection, device for pressure measurement 14 can also detect pressure anomaly at any time, then can also automatically control Fluid valve closing,
Fluid is avoided to enter in heat exchanger tube.The quantity of device for pressure measurement 16 can be so reduced, only by one or quantity
Few device for pressure measurement, so as to realize the pressure detecting of multiple cylinders.
Preferably, the outer surface of the bottom of the cylinder 14 is sticked together with insulation material, the heat exchanger tube 15 and cylinder
The inner surface of the bottom of body 14 has a certain distance.
Sticked together by the outer surface of the bottom of cylinder 14 with insulation material, it is ensured that the outer surface of cylinder 14 and insulation
Heat transfer between material, it is ensured that heat is delivered to cylinder from insulation material by way of heat transfer.Heat exchanger tube 15 and cylinder
The inner surface of 14 bottom has a certain distance, realizes radiation heat transfer, it is to avoid heat exchanger tube directly contacts with cylinder and causes temperature
It is too high, so as to cause booster phenomenon to occur.
Preferably, the cylinder 14 is rectangle, cylinder bottom is plane.
Preferably, the heat exchanger tube 15 is many, two at least adjacent pipe heat pipes are connected to one by swan neck 18
Rise.Preferably, being connected between heat exchanger tube in each cylinder by swan neck 18, so that in each cylinder 14
The series connection of heat exchanger tube 15 is a heat exchanger tube.
Preferably, the heat exchanger tube 15 have it is multiple rows of, often arrange heat exchanger tube there are many.For example, as shown in Fig. 2 vertical
In clinker channel direction, two row's heat exchanger tubes are set.
Preferably, multiple heat exchanger tubes in each cylinder 14 are a heat exchanger tube 15 by elbow series connection, with independent
Entrance and exit, and heat exchanger tube 15 in multiple cylinders 14 is parallel-connection structure.So, the heat exchanger tube of each cylinder 14 is independent
One valve is set, and by being separately provided valve, control system can individually control each valve, so that individually control enters every
The flow of the fluid of individual cylinder.
Certainly, preferably, each cylinder can be separately provided a device for pressure measurement 16, device for pressure measurement is passed through
16 pressure come in each cylinder of automatic detection, when detecting that some cylinder internal pressure is abnormal, then close the valve of the cylinder automatically,
Fluid is prevented to enter the heat exchanger tube of the cylinder.
Preferably, because connectivity structure 12 is set, therefore the few device for pressure measurement of quantity can be set, for example only set
Put one.Now, control system detects pressure generation exception, then can control to close all valves or total valve.
Preferably, device for pressure measurement 16 can be replaced with temperature in use measurement apparatus.Temperature measuring equipment and control
System carries out data cube computation, and when the temperature of detection will be abnormal less than certain numerical value, i.e. measurement data, then control system is closed in time
The Fluid valve closed into heat exchanger tube 15.
Preferably, humidity measuring instrument can be used to replace device for pressure measurement 16.Humidity measuring instrument and control
System carries out data cube computation, and when the humidity of detection will be abnormal higher than certain numerical value, i.e. measurement data, then control system is closed in time
The Fluid valve closed into heat exchanger tube 15.
Preferably, filling heat conduction or accumulation of heat porous material 17 in cylinder 14.By setting porous material 17, it can make
Obtain unnecessary heat storage to get up, while heat exchanger tube 15 can be transferred heat to by way of heat conduction.
Preferably, fluid flow passageway is set in the porous media 17, to detect internal fluid pressure.
The structure of cylinder 14 as shown in Figure 3, the one end of cylinder 14 closing, the other end sets pipe plug 13, and pipe is U-tube
Structure.
Certainly, preferably, many pipes in cylinder 14 can be parallel-connection structure, for example, in the fluid of heat exchanger tube 15
Inlet and outlet sets collector, and the collector of similar convector is such.
Preferably, the pipe between multiple cylinders 14 can be cascaded structure, i.e. heat exchanger tube between adjacent cylinder 14
15 are connected as the structure of series connection by connecting tube.So only need to a valve.
Preferably, in this case, the outer surface of described heat exchanger tube 15 coats heat-absorbing material, to strengthen to radiation
Absorption.
Preferably, along the transporting direction of clinker, the heat absorption capacity of the heat-absorbing material of heat exchanger tube 15 of different cylinders 14 by
It is cumulative strong, it is further used as preferably, the enhanced amplitude of heat absorption capacity gradually increases.It is found through experiments that, can by being arranged such
To improve exhaust-heat absorption ability 15% or so.And by being arranged such, can make it that the overall heat absorption of heat exchanger tube is uniform, temperature
Difference diminishes, it is ensured that heat exchanger tube bulk life time, it is to avoid part heat exchanger tube temperature is too high, causes constantly frequently to change.
Preferably, along the transporting direction of clinker, the capacity of heat transmission of the different porous materials 17 of 14 heat exchanger tube of cylinder 15 by
It is cumulative strong, it is further used as preferably, the enhanced amplitude of the capacity of heat transmission gradually increases.It is found through experiments that, can by being arranged such
16% or so is provided to provide exhaust-heat absorption ability.Before main cause is similar.
Preferably, preferably, along the transporting direction of clinker, the storage of the different porous materials 17 of 14 heat exchanger tube of cylinder 15
Heat energy power gradually strengthens, and is further used as preferably, the enhanced amplitude of heat storage capacity gradually increases.Before main cause is similar.
, can be by setting phase same material in different parts in this programme, the porous material layer 17 of different thermal conductivity factors can
With the different enhancings for the absorption heat energy power for realizing different parts heat exchanger tube 15.The porous material of unlike material can also be directly selected
Layer 17, to obtain different heat absorption capacities.
Preferably, the outer surface of cylinder 14 sets heat-absorbing material.Main cause be because insulation material and cylinder 14 it
Between heat exchange there is also a part of radiation heat transfer, it is therefore desirable to heat-storing material is set to increase caloric receptivity.
Preferably, along the transporting direction of clinker, the heat absorption capacity of the different surface heat-absorbing materials of cylinder 14 gradually strengthens,
It is further used as preferably, the enhanced amplitude of heat absorption capacity gradually increases.Before main cause is similar.
Preferably, the outside of cylinder 14 sets raised.The raised height of different drum surfaces is different, along the transport of clinker
Direction, the raised height of different drum surfaces gradually increases, and is further used as preferably, increased amplitude gradually increases.It is main former
Before similar.
Preferably, the outside of cylinder 14 sets raised.The raised density of different drum surfaces is different, along the transport of clinker
Direction, the raised density of different drum surfaces gradually increases, and is further used as preferably, increased amplitude gradually increases.It is main former
Before similar.
Preferably, described grate-cooler also includes clinker outlet temperature detection means, for detecting the ripe of clinker outlet
Material temperature degree.The temperature-detecting device and control system data cube computation.The control system is automatic according to the clinker temperature of detection
The aperture of control valve, so as to control the flow into the fluid of heat exchanger tube.
When the temperature that the clinker of detection is exported is too high, then the aperture of automatic intensifying valve, increases the fluid for entering heat exchanger tube
Flow, if the temperature of detection is too low, turn valve opening down automatically, reduce the flow for entering heat exchange pipe fluid.By certainly
Dynamic regulation fluid flow, so as to automatically adjust the quantity for the fluid for participating in heat exchange, clinker temperature is exported so as to realize to clinker
Regulation, the need for meeting production above, it is ensured that cement quality.
Described control system can be realized automatically adjusts flow according to outlet temperature.Control mode is as follows：Outlet temperature
When spending T, flow V represents to meet the clinker temperature condition of manufacture of cement.Above-mentioned outlet temperature T, flow V is normal data.Institute
The normal data storage stated is in the controls.
When outlet temperature is changed into t, flow v changes are as follows：
V=b*V* (t/T)a, wherein a is parameter, 1.06<a<1.10；It is preferred that, a=1.08；
B is regulation coefficient, (t/T)>1,0.97<b<1.00；Preferably 0.98；
(t/T)<1,1.00<b<1.04；Preferably 1.02；
(t/T)=1, b=1；
0.85<t/T<1.15。
In above-mentioned formula, temperature T, t are absolute temperature, and unit is K, and flow V, v unit are m/s, to enter waste heat recovery
The total flow of equipment.
Preferably, when the heat exchanger tube 15 of multiple cylinders 14 is parallel-connection structure, when flow is adjusted, often
The ratio of increase or the reduction of the heat exchanger tube flow of individual cylinder is identical.
Preferably, the ratio of the increase of the flow of heat exchanger tube 15 or the reduction of each cylinder 14 is different, along the fortune of clinker
The ratio of defeated direction, increase or reduction is less and less.Further preferably, the amplitude for increasing or reducing ratio is less and less.
It is found through experiments that, the setting changed by flowrate amplitude, can make it that the data of control are more accurate, error is smaller, can
The error of reduction 30% or so.
Pass through above-mentioned formula, it is possible to achieve the intellectuality of flow is automatically adjusted according to outlet temperature, having saved to transport,
Improve production efficiency.
Preferably, multigroup normal data can be inputted in the controls.When appearance two groups or multigroup reference data
In the case of, the interface of the reference data of user's selection can be provided, it is preferred that control system can be automatically selected (1-t/T)2
Minimum one of value.
Preferably, the control system includes blower fan frequency regulation arrangement, the clinker temperature that can be exported according to clinker
Blower fan frequency is controlled, so as to adjust the flow of the wind of cooling clinker into grate-cooler.When temperature is too high, then blower fan is tuned up automatically
Frequency, increase air output, if the temperature of detection is too low, automatic reduction blower fan frequency reduces air output.
It is of course possible to which blower fan FREQUENCY CONTROL is combined with fluid flow control, clinker outlet temperature is controlled together.
Preferably, the fluid heated in heat exchanger tube 15 is used for Waste Heat Generation.
Preferably, heat exchanger tube 15 connects convector, so that the water of heating is used to heat.
Preferably, the water in heat exchanger tube 15 can be delivered directly in convector, and can also be by heat exchanger, will
Heat transfer is entered back into convector and heated to heating water, then heating water.The radiator include upper header and
Lower collector pipe and positioned at upper header and the radiating tube of lower collector pipe.
As shown in Figure 4,5, the radiating tube that the radiator is used, the radiating tube includes base tube 19 and outside base tube
The fin 21-23 enclosed, as shown in Figure 4,5, the cross section of the base tube is isosceles triangle, and the fin includes first and dissipated
The fin 22 of backing 21 and second, the second fin 23, first fin 21 is stretched out from isosceles triangle drift angle
, second fin include multiple second fin 22 extended outwardly where two waists from isosceles triangle with
And multiple second fin 23 stretched out from the first fin, the second fin 22, second extended to same direction dissipates
Backing 23 is parallel to each other, for example, as illustrated, the second radiating stretched out from the second waist of isosceles triangle 25 (waist on the left side)
Piece 22, the second fin 23 are parallel to each other, the second radiating stretched out from the first waist of isosceles triangle 24 (i.e. the waist on the right)
Piece 22, the second fin 23 are parallel to each other, first fin 21, the second fin 22, the end of the second fin 23 extension
Portion forms the second isosceles triangle, as shown in figure 4, the length of the waist of the second isosceles triangle is S；The inside of base tube 19 is set
First fluid passage 20, the inside of first fin 21 sets second fluid passage 26, the first fluid passage 21 and the
Two fluid passages 26 are connected.For example, as described in Figure 4, in the connection of isosceles triangle corner position.
By structure setting so, it can make it that the outside of base tube 19 sets multiple fin, increase radiating, while the
The inside of one fin 21 sets fluid passage so that fluid enters in the first fin 21, directly with the phase of the first fin 21
The second fin 22 even is exchanged heat, and adds heat-sinking capability.
General radiating tube is all surrounding or both sides set fin, but is found in engineering, one contacted with wall
Generally heat convection effect is bad for the fin of side, because relatively poor, therefore this hair that air flows in wall side
It is bright that isosceles triangle base 27 is set to plane, therefore when fin is installed, can be directly close with wall by plane
Contact, compared with other radiators, can greatly save installing space, it is to avoid the waste in space, while taking special dissipate
Backing form, it is ensured that meet optimal radiating effect.
Preferably, second fin 22, the second fin 23 are relative to the face where the center line of the first fin 21
Specular, i.e., relative to the face specular where the line at the midpoint where the summit and base of isosceles triangle.
Preferably, the second fin 22, the second fin 23 extend perpendicular to two waists of the second isosceles triangle.
In the case that the length on the side of isosceles triangle is certain, the first fin 21 and the radiating of the second fin 22, second
Piece 23 is longer, then heat transfer effect is better in theory, is found in process of the test, when the first fin 21 and the second fin 22,
When second fin 23 reaches certain length, then heat transfer effect just increases very unobvious, is primarily due to as first dissipates
The fin 22 of backing 21 and second, the increase of the length of the second fin 23, the temperature in fin end are also more and more lower, with temperature
Degree reduction to a certain extent, then can cause heat transfer effect unobvious, conversely also add the cost of material and considerably increase
The space occupied of radiator, meanwhile, in heat transfer process, if the spacing between the second fin is too small, also easily causes and change
The deterioration of thermal effect, because with the increase of radiating length of tube, boundary layer is thickening in air uphill process, causes abutting fins
Between boundary layer mutually coincide, deteriorate heat transfer, radiating length of tube is too low or the second fin between spacing cause greatly very much to change
Hot area is reduced, and have impact on the transmission of heat, therefore the distance in the second adjacent fin, the length of side of isosceles triangle, the
The size relationship of an optimization is met between one fin and the length and heat sink length of the second fin.
Therefore, the present invention optimal is dissipated by what thousands of test datas of multiple various sizes of radiators were summed up
The dimensionally-optimised relation of hot device.
The distance of described the second adjacent fin is L1, and the base length of the isosceles triangle is W, described second
The length of the waist of isosceles triangle is S, and the relation of above-mentioned three meets equation below：
L1/S*100=A*Ln (L1/W*100)+B* (L1/W)+C, wherein Ln is logarithmic function, and A, B, C are coefficient, 0.68
<A<0.72,22<B<26,7.5<C<8.8；
0.09<L1/S<0.11,0.11<L1/W<0.13
4mm<L1<8mm
40mm<S<75mm
45mm<W<85mm
The drift angle of isosceles triangle is a, 110 °<a<160°.
Preferably, the length of base tube 19 is L, 0.02<W/L<0.08,800mm<L<2500mm.
Preferably, A=0.69, B=24.6, C=8.3.
It should be noted that adjacent second fin apart from L1 be counted since the center of the second fin away from
From as shown in Figure 1.
By being tested again after result of calculation, by calculating the numerical value on border and median, the result of gained is basic
Upper to be matched with formula, error is substantially within 3.54%, and maximum relative error is no more than 3.97%, and mean error is
2.55%.
It is preferred that, the distance of described the second adjacent fin is identical.
Preferably, the width of the first fin 21 is greater than the second fin 22, the width of the second fin 23.
It is preferred that, the width of the first fin 21 is b1, and the second fin 22, the width of the second fin 23 are b2, its
Middle 2.2*b2<b1<3.1*b2；
Preferably, 0.9mm<b2<1mm,2.0mm<b1<3.2mm.
Preferably, the width of second fluid passage 26 is 0.85-0.95 times of the width of the second fin 22, it is preferably
0.90-0.92 times.
Width b1, b2 herein refers to the mean breadth of fin.
Although the present invention is disclosed as above with preferred embodiment, the present invention is not limited to this.Any art technology
Personnel, without departing from the spirit and scope of the present invention, can make various changes or modifications, therefore protection scope of the present invention should
It is defined when by claim limited range.
Claims (3)
1. a kind of square equipment manufacture of cement waste heat recovery system of grate cooler, the grate-cooler includes shell, clinker passage, it is special
Levy and be, insulation material is set between shell and the clinker passage, waste heat recovery apparatus is set in insulation material, it is described remaining
Heat recovery equipment includes setting heat exchanger tube at least one cylinder, at least one described cylinder, and the cylinder is rectangle, cylinder
Bottom is plane；
There is insulation material between waste heat recovery apparatus and the clinker passage；The heat exchanger tube is many, at least adjacent two
Root pipe heat pipe is linked together by swan neck；
Also there is clinker outlet temperature detection means, the clinker temperature for detecting clinker outlet, the temperature on the grate-cooler
Spend detection means and control system data cube computation, the clinker temperature that the control system detect according to outlet temperature detection means oneself
The aperture of dynamic control valve, so as to control the flow into the fluid of heat exchanger tube；When detection clinker export temperature it is too high, then
The aperture of the automatic intensifying valve of control system, increase enters the flow of the fluid of heat exchanger tube, if the temperature of the clinker outlet of detection
Spend low, then control system turns valve opening down automatically, reduces the flow for entering heat exchange pipe fluid；
Described control system control mode is as follows：Outlet temperature T represents to meet the clinker temperature condition of manufacture of cement, temperature T
When into waste heat recovery apparatus fluid flow V, above-mentioned outlet temperature T, flow V is normal data, and the normal data is deposited
Storage is in the controls；
When outlet temperature is changed into t, flow v changes are as follows：
V=b*V* (t/T)a, wherein a is parameter, 1.06<a<1.10；
B is regulation coefficient, (t/T)>When 1,0.97<b<1.00；
(t/T)<When 1,1.00<b<1.04；
(t/T) when=1, b=1；
0.85<t/T<1.15；
In above-mentioned formula, temperature T, t are absolute temperature, and unit is K, and flow V, v unit are m/s, to enter waste heat utilization equipment
Total flow.
2. residual neat recovering system as claimed in claim 1, it is characterised in that the pressure measxurement also including measuring barrel pressure is filled
Put, the device for pressure measurement is connected with cylinder.
3. residual neat recovering system as claimed in claim 2, it is characterised in that the waste heat recovery apparatus includes multiple cylinders,
Connected between the multiple cylinder by connectivity structure, any one progress of the device for pressure measurement and multiple cylinders
Connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510618031.8A CN105066724B (en) | 2015-09-24 | 2015-09-24 | A kind of square equipment manufacture of cement waste heat recovery system of grate cooler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510618031.8A CN105066724B (en) | 2015-09-24 | 2015-09-24 | A kind of square equipment manufacture of cement waste heat recovery system of grate cooler |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105066724A CN105066724A (en) | 2015-11-18 |
| CN105066724B true CN105066724B (en) | 2017-10-24 |
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ID=54496155
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510618031.8A Expired - Fee Related CN105066724B (en) | 2015-09-24 | 2015-09-24 | A kind of square equipment manufacture of cement waste heat recovery system of grate cooler |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106766963B (en) * | 2017-01-12 | 2018-08-10 | 中国科学院力学研究所 | A kind of cement clinker production line grate-cooler afterheat utilizing system |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3560368A (en) * | 1968-06-05 | 1971-02-02 | Allis Chalmers Mfg Co | Traveling grate method for the recovery of oil from shale |
| CN2151429Y (en) * | 1992-12-23 | 1993-12-29 | 南京化工学院 | Energy saver for production of steam by waste heat from fritting furnace |
| CN102052847B (en) * | 2009-10-31 | 2014-09-24 | 山东省冶金设计院股份有限公司 | Chain grate machine of dry distillation oil shale |
| CN204404790U (en) * | 2014-12-17 | 2015-06-17 | 无锡迅德环保科技有限公司 | A kind of pusher-tray type roaster |
| CN204944221U (en) * | 2015-09-24 | 2016-01-06 | 山东大学 | A kind of square equipment manufacture of cement waste heat recovery system of grate cooler |
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2015
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