CN104089267A - Power type heat pipe waste heat recovery method - Google Patents
Power type heat pipe waste heat recovery method Download PDFInfo
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- CN104089267A CN104089267A CN201410371383.3A CN201410371383A CN104089267A CN 104089267 A CN104089267 A CN 104089267A CN 201410371383 A CN201410371383 A CN 201410371383A CN 104089267 A CN104089267 A CN 104089267A
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- 239000002918 waste heat Substances 0.000 title claims abstract description 104
- 238000011084 recovery Methods 0.000 title claims abstract description 80
- 238000000034 method Methods 0.000 title claims abstract description 39
- 239000007789 gas Substances 0.000 claims abstract description 114
- 238000009835 boiling Methods 0.000 claims abstract description 67
- 230000008569 process Effects 0.000 claims abstract description 26
- 239000000779 smoke Substances 0.000 claims abstract description 14
- 239000007788 liquid Substances 0.000 claims description 181
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 95
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 43
- 239000003546 flue gas Substances 0.000 claims description 43
- 230000002411 adverse Effects 0.000 claims description 40
- 239000000126 substance Substances 0.000 claims description 22
- 229920006395 saturated elastomer Polymers 0.000 claims description 21
- 230000000740 bleeding effect Effects 0.000 claims description 15
- 239000003517 fume Substances 0.000 claims description 15
- 238000012546 transfer Methods 0.000 claims description 15
- 230000007774 longterm Effects 0.000 claims description 13
- 238000004519 manufacturing process Methods 0.000 claims description 13
- 238000006243 chemical reaction Methods 0.000 claims description 12
- 230000007704 transition Effects 0.000 claims description 12
- 238000010438 heat treatment Methods 0.000 claims description 9
- 239000012530 fluid Substances 0.000 claims description 8
- 239000002253 acid Substances 0.000 claims description 7
- 230000007797 corrosion Effects 0.000 claims description 6
- 238000005260 corrosion Methods 0.000 claims description 6
- 230000000694 effects Effects 0.000 claims description 6
- 230000009471 action Effects 0.000 claims description 5
- 239000012535 impurity Substances 0.000 claims description 5
- 238000009833 condensation Methods 0.000 claims description 4
- 230000005494 condensation Effects 0.000 claims description 4
- 238000003860 storage Methods 0.000 claims description 4
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 239000003795 chemical substances by application Substances 0.000 claims description 3
- 238000013461 design Methods 0.000 claims description 3
- 238000004064 recycling Methods 0.000 claims description 3
- 238000009834 vaporization Methods 0.000 claims description 3
- 230000008016 vaporization Effects 0.000 claims description 3
- 125000004122 cyclic group Chemical group 0.000 claims description 2
- 238000010992 reflux Methods 0.000 claims description 2
- 238000000926 separation method Methods 0.000 claims description 2
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 238000013021 overheating Methods 0.000 abstract 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 238000005265 energy consumption Methods 0.000 description 5
- 238000012423 maintenance Methods 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 4
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 4
- 230000002427 irreversible effect Effects 0.000 description 4
- 230000002441 reversible effect Effects 0.000 description 4
- 238000005245 sintering Methods 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 229910052742 iron Inorganic materials 0.000 description 3
- 238000013459 approach Methods 0.000 description 2
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- 238000009841 combustion method Methods 0.000 description 2
- -1 generating Substances 0.000 description 2
- 230000001131 transforming effect Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 235000019504 cigarettes Nutrition 0.000 description 1
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- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000002161 passivation Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- NIFIFKQPDTWWGU-UHFFFAOYSA-N pyrite Chemical compound [Fe+2].[S-][S-] NIFIFKQPDTWWGU-UHFFFAOYSA-N 0.000 description 1
- 229910052683 pyrite Inorganic materials 0.000 description 1
- 239000011028 pyrite Substances 0.000 description 1
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Abstract
The invention belongs to the technical field of energy efficient utilization, energy saving and environmental protection engineering, and relates to a power type heat pipe waste heat recovery method. Smoke sequentially passes through a kth heat pipe circulation heat pipe evaporator for an overheating device, ... a first heat pipe circulation heat pipe evaporator for the overheating device, an mth heat pipe circulation heat pipe evaporator for a boiling section, ... a first heat pipe circulation heat pipe evaporator for the boiling section, an nth heat pipe circulation heat pipe evaporator for an economizer, ... a first heat pipe circulation heat pipe evaporator for the economizer, wherein the n is larger than or equal to one and smaller than or equal to ten, the m is larger than or equal to one and smaller than or equal to ten, and the k is larger than or equal to one and smaller than or equal to ten; liquid-state heat pipe working media in the k+m+n heat pipe evaporators absorb waste heat of the smoke to generate the liquid-gas phase change process, the smoke temperature is lowered, and efficient recovery and utilization of the smoke waste heat is achieved; the recovery process of the power type heat pipe waste heat recovery method is easy and convenient to implement, and the power type heat pipe waste heat recovery method is reliable in principle, convenient to operate, safe in use, long in service life of the using device, high in waste heat recovery efficiency, low in maintaining cost and environmentally friendly.
Description
Technical field:
The invention belongs to high efficiency of energy utilization and energy-saving environment protection engineering technical field, relate to a kind of power type heat pipe-type exhaust heat recovering method, power type heat pipe is applied to the high efficiente callback utilization of industrial exhaust heat.
Background technology:
The efficient utilization of the energy and energy-conserving and environment-protective have become the key issue that determines that can human society long-term sustainable fast development, just day by day be subject to people's attention, and how to make good use of the waste heat of various industrial processes, the efficient utilization and the energy-conserving and environment-protective problem tool that solve the energy are of great significance.In general, the specific energy consumption of a lot of products of China has a long way to go compared with developed countries, as the major industrial product specific energy consumption of the industries such as iron and steel, generating, building materials, chemical industry exceeds 20%～80%, has very large energy-saving potential.The industrial utilization rate of waste heat of the main power consumption such as China's iron and steel, generating, building materials, chemical industry, light textile, machinery is only 4%～5%, the thermal efficiency of Industrial Boiler and kiln is in 70% left and right, steel and iron industry is high pollution and highly energy-consuming industry, from statistics, steel industry total energy consumption accounts for 1/6th of national total energy consumption, and wherein a big chunk heat is not fully used, taking the callable heat of sintering process as example: the fume afterheat after sintering process, temperature reaches 350 DEG C, contains oxygen more; 800 DEG C of the temperature of sintering finished ores, have more sensible heat, occupy 45% left and right in sintering energy consumption.In chemical industry, sulfuric acid is important industrial chemicals.No matter be pyrite-based sulfuric acid production, or with sulphur or the relieving haperacidity of smelting gas, all can produce in process of production a large amount of waste heats, and in produced waste heat, the high-temperature residual heat that grade is higher account for major part (exceeding 60%).
At present, the boiler that is applied to waste heat recovery mainly contains fire tube waste heat boiler, water pipe waste heat boiler and heat pipe waste heat boiler three major types, and wherein fire tube waste heat boiler is exactly that flue gas flows through in fire cylinder or smoke pipe, to fire cylinder or cigarette outside tube water, vapour or steam water interface heating; Water pipe waste heat boiler is exactly to leak water in pipe the inside, by the water in outside smoke convection/radiation heat transfer heating pipe; Heat pipe waste heat boiler, utilize exactly the evaporator section of heat pipe to absorb the waste heat of flue gas or waste gas, and transfer heat to water, vapour or the steam water interface outside heat pipe by condensation segment, the advantages such as that fire tube waste heat boiler has is simple in structure, low to water quality requirement, processing ease, but have that metal consumption is large, flue gas parallel baffled and heat-transfer effect is poor, exhaust gas temperature is higher shortcoming; There is the shortcoming that water capacity is large, startup is slower; Also there is the problem of easy dust stratification in smoke pipe, the outer difficult snaking of smoke pipe; Also there is in addition the problem of the Transforming Engineering that cannot be adapted to large capacity and high parameter operating mode; The heating surface arrangement convenience of water pipe waste heat boiler, good heat-transfer, structurally can be used for the operating mode of large capacity and high parameter; But water system directly contacts with the high-temperature flue gas of main boiler (or production process), once generation leakage phenomenon, not only water pipe waste heat boiler needs shutdown maintenance at once, provides the main boiler (or production process) of waste heat also may need emergent management, even stops production; In addition, the pipe temperature of the variant position of water pipe waste heat boiler is widely different, also cannot accurately control exhanst gas outlet temperature, therefore be difficult to avoid low temperature acid corrosion breakoff phenomenon; And when operation at boiler initial stage, what boiler entered is cold water, and preheating needs a period of time, and water pipe waste heat boiler is because adopting direct heat transfer, and tube wall temperature approaches normal-temperature water, and very easily there is dewfall in equipment surface like this, the sticky bad phenomenon such as grey; Heat pipe waste heat boiler has thoroughly been isolated thermal source and low-temperature receiver, can not produce the blending of cold fluid and hot fluid, but existing heat pipe major part is all to utilize many gravity-type heat pipes to combine, and together with water route still must be close to flue, engineering arranges that difficulty is large; Tens, hundreds of and even several thousand heat pipe close arrangement, are not easy to maintenance, are also difficult to find which root heat pipe lost efficacy; Tens, the work operating mode of hundreds of and even several thousand heat pipes is different, and overall heat exchange amount is uncontrollable, and exhaust gas temperature also cannot effectively be controlled, and is difficult to equally avoid occurring acid dew point and the corrosion phenomenon that causes pipeline or heat exchanger; In addition, when practical application, exist: after heat pipe long-play, have incondensable gas and produce, cause vent plug, make the working medium in heat pipe cannot Natural Circulation and lost efficacy, sometimes even occur outer wall dry combustion method, the phenomenons such as booster.
Summary of the invention:
The object of the invention is to overcome the shortcoming that prior art exists, solve the problem existing in smoke and waste steam boiler, seek design a kind of power type heat pipe-type exhaust heat recovering method is provided, power type heat pipe is applied to the heat recovery of flue gas.
To achieve these goals, the present invention realizes in power type heat pipe waste heat boiler device, its concrete waste heat recovery process is: flue gas is successively by the heat pipe evaporator of k superheater heat pipe circulation, ..., the 1st heat pipe evaporator that superheater circulates with heat pipe, and then the heat pipe evaporator circulating with heat pipe by m boiling section, ..., the 1st heat pipe evaporator that boiling section circulates with heat pipe, the last heat pipe evaporator with heat pipe circulation by n economizer again, ..., the 1st heat pipe evaporator that economizer circulates with heat pipe, wherein 1≤n≤10, 1≤m≤10, 1≤k≤10, in k+m+n heat pipe evaporator there is liquid-gas phase transition process after absorbing fume afterheat in liquid heat-pipe working medium, reduces flue-gas temperature, realizes the high efficiente callback utilization of fume afterheat, n economizer circulates with heat pipe, m boiling section is identical with the operation principle of k superheater heat pipe circulation with heat pipe circulation, the formation of heat pipe circulation is also consistent, economizer is water-cooled with heat pipe cycle condenser, boiling section is pool boiling formula with heat pipe cycle condenser, heat pipe cycle condenser vapour cold type for superheater, the specific works process of each heat pipe circulation is: solution pump is by woven hose extracting liquid working medium from multi-functional liquid container, liquid working substance after adherence pressure is by the female pipe of feed flow, knockout and all liquid pipe, be assigned to equably in heat pipe evaporator, liquid working substance in heat pipe evaporator absorbs fume afterheat, there is liquid-gas phase transition process, after being converted into biphase gas and liquid flow, flow into the female pipe of biphase gas and liquid flow through gas and liquid collecting pipe, this gas-liquid two-phase gas-liquid distributing pipe of flowing through is evenly distributed in heat pipe cycle condenser, this biphase gas and liquid flow working medium transfers heat to after heated water or water vapour in heat pipe cycle condenser, total condensation is liquid working substance, this liquid working substance is transported to multi-functional liquid container by tube connector, liquid working substance in multi-functional liquid container enters solution pump through woven hose again, so move in circles, continuously fume afterheat is passed to heated water and steam, produce the superheated steam of user's request, realize the recycling of waste heat.
The agent structure of power type heat pipe waste heat boiler device of the present invention comprises exhanst gas outlet, flue, gas and liquid collecting pipe, heat pipe evaporator, all liquid pipes, knockout, economizer circulates with heat pipe, boiling section circulates with heat pipe, superheater circulates with heat pipe, smoke inlet, temperature sensor after economizer, temperature sensor after boiling section, temperature sensor after superheater, the female pipe of biphase gas and liquid flow, heat pipe cycle condenser, the female pipe of feed flow, steam water-level line, drum, drum pressure indication sensor, saturated steam pipe, saturated-steam temperature sensor, superheater heat pipe cycle condenser steam outlet pipe, heat pipe cycle condenser steam inlet pipe for superheater, superheat steam temperature sensor, softening water pipe, feed pump, gas-liquid distributing pipe, heat pipe cycle condenser outlet pipe for economizer, heat pipe cycle condenser water inlet pipe for economizer, the high point of condenser air bleeding valve, steam water-level indication sensor, Multifunction tank air bleeding valve, multi-functional liquid container, blowoff valve, tube connector, solution pump, woven hose and central controller, be divided into adverse current biphase gas and liquid flow heat pipe waste heat recovery economizer subsystem by function, biphase gas and liquid flow heat pipe waste heat recovery boiling section subsystem, adverse current biphase gas and liquid flow heat pipe waste heat recovery superheat section subsystem, the mobile subsystem of steam and center-control subsystem, the individual economizer of n (1≤n≤10) forms adverse current biphase gas and liquid flow heat pipe waste heat recovery economizer subsystem with heat pipe circulation according to counterflow configuration arranged in form, the individual boiling section of m (1≤m≤10) forms biphase gas and liquid flow heat pipe waste heat recovery boiling section subsystem with heat pipe circulation, and the individual superheater of k (1≤k≤10) forms adverse current biphase gas and liquid flow heat pipe waste heat recovery superheater subsystem with heat pipe circulation according to counterflow configuration arranged in form, the two ends of flue are respectively smoke inlet and exhanst gas outlet, the upper end of each heat pipe circulation is equipped with the heat pipe evaporator being arranged in flue, and the both sides of each heat pipe evaporator are provided with gas and liquid collecting pipe and equal liquid pipe respectively, the all corresponding heat pipe cycle condenser of heat pipe evaporator of each heat pipe circulation, a side of each heat pipe cycle condenser is equipped with gas-liquid isocon, gas and liquid collecting pipe is communicated with gas-liquid isocon by the female pipe of biphase gas and liquid flow, the lower end of each heat pipe cycle condenser all connects and is shaped with multi-functional liquid container, the two ends up and down of multi-functional liquid container are respectively equipped with Multifunction tank air bleeding valve and blowoff valve, between multi-functional liquid container and solution pump, are communicated with by tube connector, all the lower end of liquid pipe is provided with knockout, and knockout is communicated with solution pump by the female pipe of feed flow, each economizer is equipped with the high point of condenser air bleeding valve with the upper end of heat pipe cycle condenser, lower end is respectively equipped with economizer heat pipe cycle condenser outlet pipe and economizer heat pipe cycle condenser water inlet pipe, circulates for being communicated with adjacent two economizer heat pipes, the 1st economizer is communicated with one end of feed pump with heat pipe cycle condenser water inlet pipe, the other end of feed pump and softening cross current, boiling section is with being communicated with by drum between heat pipe cycle condenser, one end of drum is communicated with heat pipe cycle condenser outlet pipe with n economizer, and other end connection is shaped with steam water-level indication sensor, in drum, be provided with steam water-level line allowed band, the upper end of drum is provided with drum pressure indication sensor, m boiling section is shaped with saturated steam pipe with the drum upper end at heat pipe cycle condenser place, and drum is communicated with heat pipe cycle condenser with the 1st superheater by saturated steam pipe, and saturated steam pipe is provided with saturated-steam temperature sensor, the 1st superheater is provided with the 1st superheater heat pipe cycle condenser steam outlet pipe with heat pipe cycle condenser upper end, other superheater is respectively equipped with superheater heat pipe cycle condenser steam inlet pipe and superheater heat pipe cycle condenser steam outlet pipe with the upper end of heat pipe cycle condenser, and k superheater is with connecting and be shaped with superheat steam temperature sensor on heat pipe cycle condenser steam outlet pipe, after adverse current biphase gas and liquid flow heat pipe waste heat recovery economizer subsystem, be provided with temperature sensor after economizer, after biphase gas and liquid flow heat pipe waste heat recovery boiling section subsystem, be provided with temperature sensor after boiling section, after adverse current biphase gas and liquid flow heat pipe waste heat recovery superheat section subsystem, be provided with temperature sensor after superheater, the central controller of center-control subsystem is obtained and is controlled flue-gas temperature by temperature sensor after temperature sensor and superheater after temperature sensor, boiling section after economizer respectively, and solution pump is carried out to dibit control or frequency conversion continuous control.
The adverse current of adverse current biphase gas and liquid flow heat pipe waste heat recovery economizer subsystem of the present invention refers to that flue gas is to flow into from n economizer heat pipe evaporator, flow through successively n-1, n-2, to the last flow out with heat pipe evaporator from the 1st economizer, and heated water flows into heat pipe cycle condenser from the 1st economizer, flow through successively the 2nd, the 3rd, finally flow out with heat pipe cycle condenser from n economizer, this reverse flow can realize the cascade utilization of energy, make to form between flue gas and water maximum heat transfer temperature difference, reduce heat exchange area, improve heat exchange efficiency, make thermodynamics irreversible loss reach minimum.
Biphase gas and liquid flow heat pipe waste heat recovery boiling section subsystem of the present invention undergoes phase transition water, produce saturated vapor, the individual heat pipe circulation of m (1≤m≤10) had both been convenient to regulate control steam production size, also can be in the time that certain heat pipe circulation be broken down, do not affect the operation of overall waste heat boiler, meanwhile, in each heat pipe circulation, working medium is less, even if pipeline breaking, working medium are revealed, also can not form impact to flue and large system boiler (or industrial process).
The adverse current of adverse current biphase gas and liquid flow heat pipe waste heat recovery superheater subsystem of the present invention refers to that flue gas is to flow into from k superheater heat pipe evaporator, flow through successively k-1, k-2, to the last flow out with the evaporimeter of heat pipe circulation from the 1st superheater, and heated water vapour flows into heat pipe cycle condenser from the 1st superheater, flow through successively the 2nd, the 3rd, finally flow out with heat pipe cycle condenser from k superheater, this reverse flow can realize the cascade utilization of energy, make to form between flue gas and water vapour maximum heat transfer temperature difference, reduce heat exchange area, improve heat exchange efficiency, make thermodynamics irreversible loss reach minimum.
The course of work of the mobile subsystem of steam of the present invention is: processed good demineralized water enters feed pump through softening water pipe, after boosting, demineralized water flows into the 1st economizer heat pipe cycle condenser, after preliminary heating, be admitted to the 2nd economizer heat pipe cycle condenser, until send into n economizer heat pipe cycle condenser, complete whole heating process, after this, the water being heated is sent into drum by n economizer heat pipe cycle condenser outlet pipe, absorb the latent heat of vaporization in drum after, be converted into saturated vapor, deliver to the 1st superheater heat pipe cycle condenser by saturated steam pipe again, until send into k superheater heat pipe cycle condenser, complete after whole superheating process of superheater, give user with the condenser steam outlet pipe of heat pipe circulation by superheated steam by k superheater.
The central controller of center-control subsystem of the present invention is by carrying out dibit control or frequency conversion continuous control to the solution pump in adverse current biphase gas and liquid flow heat pipe waste heat recovery economizer subsystem, effectively control the duty of n biphase gas and liquid flow heat pipe waste heat recovery economizer subsystem, realize the control to flue-gas temperature after economizer, ensure that efficient energy reclaims, and effectively avoid occurring low temperature acid corrosion phenomenon; Central controller is by carrying out dibit control or frequency conversion continuous control to the solution pump in biphase gas and liquid flow heat pipe waste heat recovery boiling section subsystem, effectively control the duty of m biphase gas and liquid flow heat pipe waste heat recovery boiling section subsystem, realize the reasonable control of flue-gas temperature after boiling section, ensure that phase transition process is in efficient energy recovery state; Central controller is by carrying out dibit control or frequency conversion continuous control to the solution pump in adverse current biphase gas and liquid flow heat pipe waste heat recovery superheater subsystem, effectively control the duty of k biphase gas and liquid flow heat pipe waste heat recovery superheater subsystem, realize the reasonable control of flue-gas temperature after superheater, ensure that superheating process is in efficient energy recovery state; In addition, central controller, by the position that is arranged in the steam water-level indication sensor acquisition steam water-level line on drum, is realized the control of steam water-level, the stable operation of assurance device long-term safety by controlling the duty of feed pump.
Multi-functional liquid container opposite heat tube circulation of the present invention has multiple special efficacy, first heavy effect is start-up course exhaust: multi-functional liquid container is cylindrical shape, the liquid working substance coming from condenser enters multi-functional liquid container along the tangential direction of cylinder fluid reservoir, realize gas-liquid separation by centrifugal action, in start-up course, intrasystem non-condensable gas just enters into multi-functional liquid container top like this, just can discharge smoothly by air bleeding valve; Second heavy effect is the regular exhaust of running, ensure the long-term efficient operation of heat pipe: heat pipe circulates after long-term use, because of always generating portion gas of the many reasons such as the physics chemical action of heat-pipe working medium and tube wall, multi-functional liquid container can be gathered in Multifunctional liquid storage tank top by the portion gas of generation, ensures the long-term efficient operation of heat pipe circulation by regular exhaust; Triple function is blowdown: the various impurity in system all can be deposited on Multifunctional liquid storage pot bottom by cyclic process, various impurity can be discharged in time to the operation steady in a long-term of guarantee system by blowoff valve.
Each evaporimeter and the condenser setting height(from bottom) of the heat pipe circulation in adverse current biphase gas and liquid flow heat pipe waste heat recovery economizer subsystem of the present invention, biphase gas and liquid flow heat pipe waste heat recovery boiling section subsystem and adverse current biphase gas and liquid flow heat pipe waste heat recovery superheat section subsystem are unrestricted, as long as fluid reservoir separately lower than its corresponding condenser, ensures that condensate liquid can be back to smoothly corresponding multi-functional liquid container and just can normally work; If occur, part heat exchanger must be arranged on the situation of corresponding multi-functional liquid container bottom, as long as install a small-sized fluid reservoir and a reflux solution pump additional in this heat exchanger bottom, therefore can carry out flexible design to the position of each subsystem according to user's actual conditions.
The present invention compared with prior art has the following advantages: the one, and flue gas transversal flow heat-transfer surface, heat-transfer effect is good, and heat exchange efficiency is high; The 2nd, heat-pipe working medium capacity is little, water capacity is also little, and toggle speed is fast; The 3rd, flue gas flows outside pipe, is easy to ash disposal, and water side is also easy to scale removal; The 4th, as long as heat-pipe working medium is selected rationally, system is reasonable, can be adapted to the Transforming Engineering of large capacity and high parameter operating mode completely; The 5th, the high-temperature flue gas of water system and main boiler (or production process) is isolated completely, even if there is leakage phenomenon in certain heat pipe circulation, because working medium in heat pipe circulation is limited, and each heat pipe circulation only transports partial heat energy, not only provide the main boiler (or production process) of waste heat without shutdown, heat pipe waste heat boiler, also without shutdown maintenance at once, is treated to process during overhaul by the time; The 6th, the heat exchange pipeline isothermal in each heat pipe circulation is good especially, and loops dibit control or continuity Load Regulation by opposite heat tube, can accurately control exhanst gas outlet temperature, can thoroughly avoid low temperature acid corrosion breakoff phenomenon; The 7th, when device starts, boiler enters cold water also can not affect the temperature of tube wall in flue gas, can be by rationally controlling start-up time and the operating condition of heat pipe circulation, avoid water pipe waste heat boiler because adopting direct heat transfer completely, when startup, tube wall temperature approaches normal-temperature water, the bad phenomenon such as dewfall appears in heat exchanger tube surface, sticky ash; The problems such as the 8th, due to the dynamic action of solution pump, heat pipe evaporator and heat pipe condenser can need arbitrarily to arrange according to scene, thoroughly solved in former scheme together with water route must be close to flue, and engineering layout difficulty is large; The 9th, the total quantity of heat pipe circulation is 3-30, far fewer than hundreds of and even several thousand heat pipes of the gravity type system of current application, has solved hundreds of and even several thousand heat pipes because of close arrangement, is not easy to maintenance, is difficult to find the problems such as which root heat pipe had lost efficacy; The tenth, each heat pipe circulation can be controlled its heat exchange amount by control and regulator solution pump, the work operating mode that has thoroughly solved original hundreds of and even several thousand heat pipes is different, overall heat exchange amount is uncontrollable, exhaust gas temperature is also uncontrollable, is difficult to avoid occurring acid dew point and causes the problems such as corrosive pipeline phenomenon; 11 is that each heat pipe circulation has multi-functional liquid container, and at the peak of condenser, air bleeding valve is also housed, can effectively collect and regularly get rid of the incoagulable gas and the solid impurity that in running, produce, ensure the heat pipe long-term efficient stable operation that circulates, thoroughly solved general heat pipe after long operational time, have incondensable gas to produce, cause vent plug, make the working medium in heat pipe cannot Natural Circulation and lost efficacy, sometimes even occur outer wall dry combustion method, the problems such as booster; Its recovery process is easy, and principle is reliable, easy to operate, uses safety, equipment therefor long service life, and waste heat recovery efficiency is high, and maintenance cost is low, environmental friendliness.
Brief description of the drawings:
Fig. 1 is flowage structure principle schematic of the present invention.
Detailed description of the invention:
Also be described further by reference to the accompanying drawings below by embodiment.
Embodiment 1:
Described in the present embodiment, the agent structure of power type heat pipe waste heat boiler device comprises exhanst gas outlet 1, flue 2, the 1st heat pipe circulation 3 for economizer, gas and liquid collecting pipe 4, heat pipe evaporator 5, all liquid pipes 6, knockout 7, n heat pipe circulation 8 for economizer, the 1st heat pipe circulation 9 for boiling section, m heat pipe circulation 10 for boiling section, the 1st heat pipe circulation 11 for superheater, k heat pipe circulation 12 for superheater, smoke inlet 13, temperature sensor 14 after economizer, temperature sensor 15 after boiling section, temperature sensor 16 after superheater, the female pipe 17 of biphase gas and liquid flow, the 1st heat pipe cycle condenser 18 for economizer, the female pipe 19 of feed flow, n heat pipe cycle condenser 20 for economizer, steam water-level line 21, drum 22, drum pressure indication sensor 23, saturated steam pipe 24, saturated-steam temperature sensor 25, the 1st heat pipe cycle condenser 26 for superheater, the 1st heat pipe cycle condenser steam outlet pipe 27 for superheater, k heat pipe cycle condenser steam inlet pipe 28 for superheater, k heat pipe cycle condenser 29 for superheater, k heat pipe cycle condenser steam outlet pipe 30 for superheater, superheat steam temperature sensor 31, softening water pipe 32, feed pump 33, the 1st heat pipe cycle condenser 34 for boiling section, m heat pipe cycle condenser 35 for boiling section, gas-liquid distributing pipe 36, the 1st heat pipe cycle condenser outlet pipe 37 for economizer, n heat pipe cycle condenser water inlet pipe 38 for economizer, n heat pipe cycle condenser outlet pipe 39 for economizer, the high point of condenser air bleeding valve 40, steam water-level indication sensor 41, Multifunction tank air bleeding valve 42, multi-functional liquid container 43, blowoff valve 44, tube connector 45, solution pump 46, woven hose 47 and central controller 48, be divided into adverse current biphase gas and liquid flow heat pipe waste heat recovery economizer subsystem by function, biphase gas and liquid flow heat pipe waste heat recovery boiling section subsystem, adverse current biphase gas and liquid flow heat pipe waste heat recovery superheat section subsystem, the mobile subsystem of steam and center-control subsystem, the individual economizer of n (1≤n≤10) forms adverse current biphase gas and liquid flow heat pipe waste heat recovery economizer subsystem with heat pipe circulation according to counterflow configuration arranged in form, the individual boiling section of m (1≤m≤10) forms biphase gas and liquid flow heat pipe waste heat recovery boiling section subsystem with heat pipe circulation, the individual superheater of k (1≤k≤10) forms adverse current biphase gas and liquid flow heat pipe waste heat recovery superheater subsystem with heat pipe circulation according to counterflow configuration arranged in form, the upper end of each heat pipe circulation is equipped with the heat pipe evaporator 5 being arranged in flue 2, the both sides of each heat pipe evaporator 5 are provided with gas and liquid collecting pipe 4 and equal liquid pipe 6 respectively, the all corresponding heat pipe cycle condenser of heat pipe evaporator 5 of each heat pipe circulation, a side of each heat pipe cycle condenser is equipped with gas-liquid isocon 36, gas and liquid collecting pipe 4 is communicated with gas-liquid isocon 36 by the female pipe 17 of biphase gas and liquid flow, the lower end of each heat pipe cycle condenser all connects and is shaped with multi-functional liquid container 43, the two ends up and down of multi-functional liquid container 43 are respectively equipped with Multifunction tank air bleeding valve 42 and blowoff valve 44, between multi-functional liquid container 43 and solution pump 46, are communicated with by tube connector 45, all the lower end of liquid pipe 6 is provided with knockout 7, and knockout 7 is communicated with solution pump 37 by the female pipe 19 of feed flow, each economizer is equipped with the high point of condenser air bleeding valve 40 with the upper end of heat pipe cycle condenser, lower end is respectively equipped with economizer heat pipe cycle condenser outlet pipe and economizer heat pipe cycle condenser water inlet pipe, circulates for being communicated with adjacent two economizer heat pipes, the 1st economizer is communicated with one end of feed pump 33 with heat pipe cycle condenser water inlet pipe, and the other end of feed pump 33 is communicated with softening water pipe 32, boiling section is with being communicated with by drum 22 between heat pipe cycle condenser, one end of drum 22 is communicated with heat pipe cycle condenser outlet pipe 39 with n economizer, and other end connection is shaped with steam water-level indication sensor 41, in drum 22, be carved with steam water-level line 21, the upper end of drum 22 is provided with drum pressure indication sensor 23, m boiling section is shaped with saturated steam pipe 24 with drum 22 upper ends at heat pipe cycle condenser 35 places, and drum 22 is communicated with heat pipe cycle condenser 26 with the 1st superheater by saturated steam pipe 24, and saturated steam pipe 24 is provided with saturated-steam temperature sensor 25, the 1st superheater is provided with the 1st superheater heat pipe cycle condenser steam outlet pipe 27 with heat pipe cycle condenser 26 upper ends, other superheater is respectively equipped with superheater heat pipe cycle condenser steam inlet pipe and superheater heat pipe cycle condenser steam outlet pipe with the upper end of heat pipe cycle condenser, and k superheater is with connecting and be shaped with superheat steam temperature sensor 31 on heat pipe cycle condenser steam outlet pipe 30, after adverse current biphase gas and liquid flow heat pipe waste heat recovery economizer subsystem, be provided with temperature sensor 14 after economizer, after biphase gas and liquid flow heat pipe waste heat recovery boiling section subsystem, be provided with temperature sensor 15 after boiling section, after adverse current biphase gas and liquid flow heat pipe waste heat recovery superheat section subsystem, be provided with temperature sensor 16 after superheater, the central controller 48 of center-control subsystem is respectively by temperature sensor 14 after economizer, after boiling section, after temperature sensor 15 and superheater, temperature sensor 16 obtains and controls flue-gas temperature, and solution pump 44 is carried out to dibit control or frequency conversion continuous control.
The process that the present embodiment is realized waste heat recovery is: flue gas is successively by the heat pipe evaporator of k superheater heat pipe circulation 12, ..., the heat pipe evaporator of heat pipe circulation 11 for the 1st superheater, and then by circulate 10 heat pipe evaporator of heat pipe for m boiling section, ..., the heat pipe evaporator of heat pipe circulation 9 for the 1st boiling section, the last heat pipe evaporator with heat pipe circulation 8 by n economizer again, ..., the heat pipe evaporator of heat pipe circulation 3 for the 1st economizer, in this k+m+n heat pipe evaporator there is liquid-gas phase transition process after absorbing fume afterheat in liquid heat-pipe working medium, reduce flue-gas temperature, realize the high efficiente callback utilization of fume afterheat, n economizer circulates with heat pipe, m boiling section is identical with the operation principle of k superheater heat pipe circulation with heat pipe circulation, the formation of heat pipe circulation is also consistent, economizer is water-cooled with heat pipe cycle condenser, boiling section is pool boiling formula with heat pipe cycle condenser, heat pipe cycle condenser vapour cold type for superheater, the specific works process of each heat pipe circulation is: solution pump 46 is by woven hose 45 extracting liquid working medium from multi-functional liquid container 43, liquid working substance after adherence pressure is by the female pipe 19 of feed flow, liquid-dividing head 7 and all liquid pipe 6, be assigned to equably in heat pipe evaporator 5, liquid working substance in heat pipe evaporator 5 absorbs fume afterheat, there is liquid-gas phase transition process, after being converted into biphase gas and liquid flow, flow into the female pipe 17 of biphase gas and liquid flow through gas and liquid collecting pipe 4, this gas-liquid two-phase gas-liquid distributing pipe 36 of flowing through is evenly distributed in heat pipe condenser 18, this biphase gas and liquid flow working medium transfers heat to after heated water or water vapour in heat pipe condenser 18, total condensation is liquid working substance, this liquid working substance is transported to multi-functional liquid container 43 by tube connector 47, liquid working substance in multi-functional liquid container 43 enters solution pump 46 through woven hose 45 again, so move in circles, continuously fume afterheat is passed to heated water and steam, produce the superheated steam of user's request, realize the recycling of waste heat.
Described in the present embodiment, the adverse current of adverse current biphase gas and liquid flow heat pipe waste heat recovery economizer subsystem refers to that flue gas is to flow into from n economizer heat pipe evaporator, flow through successively n-1, n-2, to the last flow out with heat pipe evaporator from the 1st economizer, and heated water flows into heat pipe cycle condenser from the 1st economizer, flow through successively the 2nd, the 3rd, finally flow out with heat pipe cycle condenser from n economizer, this reverse flow can realize the cascade utilization of energy, make to form between flue gas and water maximum heat transfer temperature difference, reduce heat exchange area, improve heat exchange efficiency, make thermodynamics irreversible loss reach minimum.
Described in the present embodiment, biphase gas and liquid flow heat pipe waste heat recovery boiling section subsystem undergoes phase transition water, produce saturated vapor, the individual heat pipe circulation of m (1≤m≤10) had both been convenient to regulate control steam production size, also can be in the time that certain heat pipe circulation be broken down, do not affect the operation of overall waste heat boiler, meanwhile, in each heat pipe circulation, working medium is less, even if pipeline breaking, working medium are revealed, also can not form impact to flue and large system boiler (or industrial process).
Described in the present embodiment, the adverse current of adverse current biphase gas and liquid flow heat pipe waste heat recovery superheater subsystem refers to that flue gas is to flow into from k superheater heat pipe evaporator, flow through successively k-1, k-2, to the last flow out with the evaporimeter of heat pipe circulation from the 1st superheater, and heated water vapour flows into heat pipe cycle condenser from the 1st superheater, flow through successively the 2nd, the 3rd, finally flow out with heat pipe cycle condenser from k superheater, this reverse flow can realize the cascade utilization of energy, make to form between flue gas and water vapour maximum heat transfer temperature difference, reduce heat exchange area, improve heat exchange efficiency, make thermodynamics irreversible loss reach minimum.
Described in the present embodiment, the course of work of the mobile subsystem of steam is: processed good demineralized water enters feed pump 33 through softening water pipe 32, after boosting, demineralized water flows into the 1st economizer heat pipe cycle condenser 18, after preliminary heating, be admitted to the 2nd economizer heat pipe cycle condenser, until send into n economizer heat pipe cycle condenser 20, complete whole heating process, after this, the water being heated is sent into drum 22 by n economizer heat pipe cycle condenser outlet pipe 39, after the interior absorption latent heat of vaporization of drum 22, be converted into saturated vapor, deliver to the 1st superheater heat pipe cycle condenser 26 by saturated steam pipe 24 again, until send into k superheater heat pipe cycle condenser 29, complete after whole superheating process of superheater, give user with the condenser steam outlet pipe 30 of heat pipe circulation 12 by superheated steam by k superheater.
Described in the present embodiment, the central controller 48 of center-control subsystem is by carrying out dibit control or frequency conversion continuous control to the solution pump 44 in adverse current biphase gas and liquid flow heat pipe waste heat recovery economizer subsystem, effectively control the duty of n biphase gas and liquid flow heat pipe waste heat recovery economizer subsystem, realize the control to flue-gas temperature after economizer, ensure that efficient energy reclaims, and effectively avoid occurring low temperature acid corrosion phenomenon; Central controller 48 is by carrying out dibit control or frequency conversion continuous control to the solution pump in biphase gas and liquid flow heat pipe waste heat recovery boiling section subsystem, effectively control the duty of m biphase gas and liquid flow heat pipe waste heat recovery boiling section subsystem, realize the reasonable control of flue-gas temperature after boiling section, ensure that phase transition process is in efficient energy recovery state; Central controller 48 is by carrying out dibit control or frequency conversion continuous control to the solution pump in adverse current biphase gas and liquid flow heat pipe waste heat recovery superheater subsystem, effectively control the duty of k biphase gas and liquid flow heat pipe waste heat recovery superheater subsystem, realize the reasonable control of flue-gas temperature after superheater, ensure that superheating process is in efficient energy recovery state; In addition, central controller 48 indicates by the steam water-level being arranged in drum 22 position that obtains steam water-level line 21 with sensor 41, realizes the control of steam water-level by controlling the duty of feed pump 33, ensures the stable operation of system long-term safety.
Embodiment 2:
The present embodiment is realized fume afterheat, and to produce startup and the running of superheated steam as follows: combine and be mounted to after power type heat pipe waste heat boiler system and device by structural principle shown in Fig. 1, first dirty cleaning is blown in each heat pipe circulation line inside, again physical chemistry Passivation Treatment is carried out in each heat pipe circulation line inside, after being disposed, n economizer heat pipe circulation, a m boiling section heat pipe circulation and k superheater heat pipe circulation are all found time, after vacuum is up to standard, add respectively appropriate heat-pipe working medium; Flue-gas temperature after flue-gas temperature after flue-gas temperature after economizer in center-control subsystem, boiling section, superheater, steam water-level line position etc. are set to concrete numerical value, in flue, send in flue gas, water-steam system and send into after demineralized water, center-control subsystem will be controlled the actual numerical value of parameter according to the flue-gas temperature after economizer etc., compare with the concrete numerical value of setting, according to selected control method, start and control the solution pump 30 of n economizer heat pipe circulation, a m boiling section heat pipe circulation and k superheater heat pipe circulation; After 50-100 minute, the parameters such as the flue-gas temperature in system after economizer will reach setting value again, and whole system, in stationary operational phase, so just can be converted into fume afterheat the overheated steam of user's request successive, energy-efficiently.
Claims (5)
1. a power type heat pipe-type exhaust heat recovering method, it is characterized in that realizing in power type heat pipe waste heat boiler device, its concrete waste heat recovery process is: flue gas is successively by the heat pipe evaporator of k superheater heat pipe circulation, ..., the 1st heat pipe evaporator that superheater circulates with heat pipe, and then the heat pipe evaporator circulating with heat pipe by m boiling section, ..., the 1st heat pipe evaporator that boiling section circulates with heat pipe, the last heat pipe evaporator with heat pipe circulation by n economizer again, ..., the 1st heat pipe evaporator that economizer circulates with heat pipe, wherein 1≤n≤10, 1≤m≤10, 1≤k≤10, in k+m+n heat pipe evaporator there is liquid-gas phase transition process after absorbing fume afterheat in liquid heat-pipe working medium, reduces flue-gas temperature, realizes the high efficiente callback utilization of fume afterheat, n economizer circulates with heat pipe, m boiling section is identical with the operation principle of k superheater heat pipe circulation with heat pipe circulation, the formation of heat pipe circulation is also consistent, economizer is water-cooled with heat pipe cycle condenser, boiling section is pool boiling formula with heat pipe cycle condenser, heat pipe cycle condenser vapour cold type for superheater, the specific works process of each heat pipe circulation is: solution pump is by woven hose extracting liquid working medium from multi-functional liquid container, liquid working substance after adherence pressure is by the female pipe of feed flow, knockout and all liquid pipe, be assigned to equably in heat pipe evaporator, liquid working substance in heat pipe evaporator absorbs fume afterheat, there is liquid-gas phase transition process, after being converted into biphase gas and liquid flow, flow into the female pipe of biphase gas and liquid flow through gas and liquid collecting pipe, this gas-liquid two-phase gas-liquid distributing pipe of flowing through is evenly distributed in heat pipe cycle condenser, this biphase gas and liquid flow working medium transfers heat to after heated water or water vapour in heat pipe cycle condenser, total condensation is liquid working substance, this liquid working substance is transported to multi-functional liquid container by tube connector, liquid working substance in multi-functional liquid container enters solution pump through woven hose again, so move in circles, continuously fume afterheat is passed to heated water and steam, produce the superheated steam of user's request, realize the recycling of waste heat.
2. power type heat pipe-type exhaust heat recovering method according to claim 1, is characterized in that the agent structure of described power type heat pipe waste heat boiler device comprises exhanst gas outlet, flue, gas and liquid collecting pipe, heat pipe evaporator, all liquid pipes, knockout, economizer circulates with heat pipe, boiling section circulates with heat pipe, superheater circulates with heat pipe, smoke inlet, temperature sensor after economizer, temperature sensor after boiling section, temperature sensor after superheater, the female pipe of biphase gas and liquid flow, heat pipe cycle condenser, the female pipe of feed flow, steam water-level line, drum, drum pressure indication sensor, saturated steam pipe, saturated-steam temperature sensor, superheater heat pipe cycle condenser steam outlet pipe, heat pipe cycle condenser steam inlet pipe for superheater, superheat steam temperature sensor, softening water pipe, feed pump, gas-liquid distributing pipe, heat pipe cycle condenser outlet pipe for economizer, heat pipe cycle condenser water inlet pipe for economizer, the high point of condenser air bleeding valve, steam water-level indication sensor, Multifunction tank air bleeding valve, multi-functional liquid container, blowoff valve, tube connector, solution pump, woven hose and central controller, be divided into adverse current biphase gas and liquid flow heat pipe waste heat recovery economizer subsystem by function, biphase gas and liquid flow heat pipe waste heat recovery boiling section subsystem, adverse current biphase gas and liquid flow heat pipe waste heat recovery superheat section subsystem, the mobile subsystem of steam and center-control subsystem, n economizer forms adverse current biphase gas and liquid flow heat pipe waste heat recovery economizer subsystem with heat pipe circulation according to counterflow configuration arranged in form, m boiling section forms biphase gas and liquid flow heat pipe waste heat recovery boiling section subsystem with heat pipe circulation, k superheater forms adverse current biphase gas and liquid flow heat pipe waste heat recovery superheater subsystem with heat pipe circulation according to counterflow configuration arranged in form, wherein 1≤n≤10,1≤m≤10,1≤k≤10, the two ends of flue are respectively smoke inlet and exhanst gas outlet, the upper end of each heat pipe circulation is equipped with the heat pipe evaporator being arranged in flue, and the both sides of each heat pipe evaporator are provided with gas and liquid collecting pipe and equal liquid pipe respectively, the all corresponding heat pipe cycle condenser of heat pipe evaporator of each heat pipe circulation, a side of each heat pipe cycle condenser is equipped with gas-liquid isocon, gas and liquid collecting pipe is communicated with gas-liquid isocon by the female pipe of biphase gas and liquid flow, the lower end of each heat pipe cycle condenser all connects and is shaped with multi-functional liquid container, the two ends up and down of multi-functional liquid container are respectively equipped with Multifunction tank air bleeding valve and blowoff valve, between multi-functional liquid container and solution pump, are communicated with by tube connector, all the lower end of liquid pipe is provided with knockout, and knockout is communicated with solution pump by the female pipe of feed flow, each economizer is equipped with the high point of condenser air bleeding valve with the upper end of heat pipe cycle condenser, lower end is respectively equipped with economizer heat pipe cycle condenser outlet pipe and economizer heat pipe cycle condenser water inlet pipe, circulates for being communicated with adjacent two economizer heat pipes, the 1st economizer is communicated with one end of feed pump with heat pipe cycle condenser water inlet pipe, the other end of feed pump and softening cross current, boiling section is with being communicated with by drum between heat pipe cycle condenser, one end of drum is communicated with heat pipe cycle condenser outlet pipe with n economizer, and other end connection is shaped with steam water-level indication sensor, in drum, be provided with steam water-level line allowed band, the upper end of drum is provided with drum pressure indication sensor, m boiling section is shaped with saturated steam pipe with the drum upper end at heat pipe cycle condenser place, and drum is communicated with heat pipe cycle condenser with the 1st superheater by saturated steam pipe, and saturated steam pipe is provided with saturated-steam temperature sensor, the 1st superheater is provided with the 1st superheater heat pipe cycle condenser steam outlet pipe with heat pipe cycle condenser upper end, other superheater is respectively equipped with superheater heat pipe cycle condenser steam inlet pipe and superheater heat pipe cycle condenser steam outlet pipe with the upper end of heat pipe cycle condenser, and k superheater is with connecting and be shaped with superheat steam temperature sensor on heat pipe cycle condenser steam outlet pipe, after adverse current biphase gas and liquid flow heat pipe waste heat recovery economizer subsystem, be provided with temperature sensor after economizer, after biphase gas and liquid flow heat pipe waste heat recovery boiling section subsystem, be provided with temperature sensor after boiling section, after adverse current biphase gas and liquid flow heat pipe waste heat recovery superheat section subsystem, be provided with temperature sensor after superheater, the central controller of center-control subsystem is obtained and is controlled flue-gas temperature by temperature sensor after temperature sensor and superheater after temperature sensor, boiling section after economizer respectively, and solution pump is carried out to dibit control or frequency conversion continuous control.
3. power type heat pipe-type exhaust heat recovering method according to claim 2, the adverse current that it is characterized in that described adverse current biphase gas and liquid flow heat pipe waste heat recovery economizer subsystem refers to that flue gas is to flow into from n economizer heat pipe evaporator, flow through successively n-1, n-2, to the last flow out with heat pipe evaporator from the 1st economizer, and heated water flows into heat pipe cycle condenser from the 1st economizer, flow through successively the 2nd, the 3rd, finally flow out with heat pipe cycle condenser from n economizer, biphase gas and liquid flow heat pipe waste heat recovery boiling section subsystem undergoes phase transition water, produce saturated vapor, m heat pipe circulation had both been convenient to regulate control steam production size, also can be in the time that certain heat pipe circulation be broken down, do not affect the operation of overall waste heat boiler, meanwhile, in each heat pipe circulation, working medium is less, can not form impact to flue and large system boiler, the adverse current of adverse current biphase gas and liquid flow heat pipe waste heat recovery superheater subsystem refers to that flue gas is to flow into from k superheater heat pipe evaporator, flow through successively k-1, k-2, to the last flow out with the evaporimeter of heat pipe circulation from the 1st superheater, and heated water vapour flows into heat pipe cycle condenser from the 1st superheater, flow through successively the 2nd, the 3rd, finally flow out with heat pipe cycle condenser from k superheater, the course of work of the mobile subsystem of steam is: processed good demineralized water enters feed pump through softening water pipe, after boosting, demineralized water flows into the 1st economizer heat pipe cycle condenser, after preliminary heating, be admitted to the 2nd economizer heat pipe cycle condenser, until send into n economizer heat pipe cycle condenser, complete whole heating process, after this, the water being heated is sent into drum by n economizer heat pipe cycle condenser outlet pipe, absorb the latent heat of vaporization in drum after, be converted into saturated vapor, deliver to the 1st superheater heat pipe cycle condenser by saturated steam pipe again, until send into k superheater heat pipe cycle condenser, complete after whole superheating process of superheater, give user with the condenser steam outlet pipe of heat pipe circulation by superheated steam by k superheater, the central controller of center-control subsystem is by carrying out dibit control or frequency conversion continuous control to the solution pump in adverse current biphase gas and liquid flow heat pipe waste heat recovery economizer subsystem, effectively control the duty of n biphase gas and liquid flow heat pipe waste heat recovery economizer subsystem, realize the control to flue-gas temperature after economizer, ensure that efficient energy reclaims, and effectively avoid occurring low temperature acid corrosion phenomenon, central controller is by carrying out dibit control or frequency conversion continuous control to the solution pump in biphase gas and liquid flow heat pipe waste heat recovery boiling section subsystem, effectively control the duty of m biphase gas and liquid flow heat pipe waste heat recovery boiling section subsystem, realize the reasonable control of flue-gas temperature after boiling section, ensure that phase transition process is in efficient energy recovery state, central controller is by carrying out dibit control or frequency conversion continuous control to the solution pump in adverse current biphase gas and liquid flow heat pipe waste heat recovery superheater subsystem, effectively control the duty of k biphase gas and liquid flow heat pipe waste heat recovery superheater subsystem, realize the reasonable control of flue-gas temperature after superheater, ensure that superheating process is in efficient energy recovery state, in addition, central controller, by the position that is arranged in the steam water-level indication sensor acquisition steam water-level line on drum, is realized the control of steam water-level, the stable operation of assurance device long-term safety by controlling the duty of feed pump, wherein 1≤n≤10,1≤m≤10,1≤k≤10.
4. power type heat pipe-type exhaust heat recovering method according to claim 2, it is characterized in that described multi-functional liquid container opposite heat tube circulation has multiple special efficacy, first heavy effect is start-up course exhaust: multi-functional liquid container is cylindrical shape, the liquid working substance coming from condenser enters multi-functional liquid container along the tangential direction of cylinder fluid reservoir, realize gas-liquid separation by centrifugal action, in start-up course, intrasystem non-condensable gas just enters into multi-functional liquid container top, just can discharge smoothly by air bleeding valve; Second heavy effect is the regular exhaust of running, ensure the long-term efficient operation of heat pipe: heat pipe circulates after long-term use, because of always generating portion gas of the many reasons such as the physics chemical action of heat-pipe working medium and tube wall, multi-functional liquid container can be gathered in Multifunctional liquid storage tank top by the portion gas of generation, ensures the long-term efficient operation of heat pipe circulation by regular exhaust; Triple function is blowdown: the impurity in boiler plant is deposited on Multifunctional liquid storage pot bottom by cyclic process meeting, impurity can be discharged in time to the operation steady in a long-term of guarantee system by blowoff valve.
5. power type heat pipe-type exhaust heat recovering method according to claim 2, the each evaporimeter and the condenser setting height(from bottom) that it is characterized in that the heat pipe circulation in described adverse current biphase gas and liquid flow heat pipe waste heat recovery economizer subsystem, biphase gas and liquid flow heat pipe waste heat recovery boiling section subsystem and adverse current biphase gas and liquid flow heat pipe waste heat recovery superheat section subsystem are unrestricted, as long as fluid reservoir separately lower than its corresponding condenser, ensures that condensate liquid can be back to smoothly corresponding multi-functional liquid container and just can; If occur, part heat exchanger must be arranged on the situation of corresponding multi-functional liquid container bottom, installs a small-sized fluid reservoir and a reflux solution pump in this heat exchanger bottom additional, can carry out flexible design to the position of each subsystem according to user's actual conditions.
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Granted publication date: 20160120 |