CN104613458B - The heat energy comprehensive utilization device of the therrmodynamic system containing steam boiler - Google Patents
The heat energy comprehensive utilization device of the therrmodynamic system containing steam boiler Download PDFInfo
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Abstract
The heat energy comprehensive utilization device of a kind of therrmodynamic system containing steam boiler, one is that steam boiler feedwater carries out heat exchange with the low temperature flue gas being ready to cleaner unit in one-level economizer；Two is that steam boiler feedwater carries out heat exchange with exhaust steam in point storehouse equipressure preheater, this heat exchange stage point echelon is carried out, the number of echelon is exactly the storehouse number of this point of storehouse equipressure preheater, and the setting of point equipressure preheater storehouse, storehouse number is the exhaust steam quantity according to whole therrmodynamic system and pressure determines；Three is that steam boiler feedwater carries out heat exchange with the high-temperature flue gas just leaving steam boiler burner hearth in two grades of economizers.The waste thermal energy carrier (flue gas, exhaust steam) of the feedwater of steam boiler and therrmodynamic system does partition reverse flow in affined space, by stage by stage, the heat exchange of point echelon, the heat energy entrained by spent heat-carrier is exchanged to greatest extent and feeds water to steam boiler.To reach the purpose that heat energy makes full use of.
Description
Technical field
The present invention relates to a kind of steam boiler technical field, the heat energy comprehensive utilization device of a kind of therrmodynamic system containing steam boiler.
Background technology
What steam boiler feed-water preheating extensively used at present has both of which: the first is the single economizer preheating mode that most boiler factory is supporting, and the feedwater of this pattern only carries out simple heat exchange with flue gas in economizer；The second is that the boiler of certain customers' self reliant rebuilding adds economizer feed-water preheating pattern, this pattern introduces the water after the pipe heat exchanger heat treated in uncovered tank by being with the exhaust steam of hot systems, and then the water after tentatively preheating is injected boiler through economizer by feed pump.The first steam boiler feed-water preheating pattern, only steam boiler feedwater in economizer with the heat transfer process of flue gas, do not utilize with the heat energy of hot systems exhaust steam.The second steam boiler feed-water preheating pattern, steam boiler feedwater is had to exchange the heat energy process of flue gas and steam-using system exhaust steam for, but, owing to the heat transfer process of steam boiler feedwater and steam-using system exhaust steam is carried out in open-top receptacle, therefore water temperature not can exceed that boiling point.The heat energy making flue gas and exhaust steam can not sufficiently be exchanged for.The feed pump of most of steam boilers is all centrifugal multistage pump multiple centrifugal pump, and during the work of single centrifugal pump, is in negative pressure state in the entry position of its impeller and a segment pipe behind.The water entering this region once exceedes certain temperature, will in this negative pressure region carburation by evaporation, small vaporization affects feed pump steady operation, and significant vaporization is formed for vapour locking so that feedwater is interrupted, and then jeopardizes the operation safety of boiler.This is also the serious bottleneck that current boiler feedwater preheating temperature is the highest.Both steam boiler feed-water preheating patterns all can not fully by flue gas and by the thermal energy exchange of exhaust steam in hot systems to boiler feedwater.And have the therrmodynamic system of substantial amounts of steam boiler and drive thereof running in national economic system, wherein the overwhelming majority has substantial amounts of exhaust steam to discharge.
Summary of the invention
The technical problem to be solved in the present invention is for the deficiencies in the prior art, it is proposed that the heat energy comprehensive utilization device of the therrmodynamic system containing steam boiler of a kind of therrmodynamic system waste thermal energy Preheated steam boiler feedwater making full use of steam boiler and drive thereof.
nullThe technical problem to be solved in the present invention is achieved through the following technical solutions，A kind of heat energy comprehensive utilization device of the therrmodynamic system containing steam boiler，It is characterized in: include feed pump and the boiler feed water mouth connected with boiler，The low temperature flue gas being sequentially provided with and being ready to cleaner unit on pipeline between feed pump and boiler feed water mouth carries out the one-level economizer of heat exchange、With two grades of economizers that the high-temperature flue gas just leaving steam boiler burner hearth carries out heat exchange，A point storehouse equipressure preheater it is provided with on pipeline between one-level economizer and two grades of economizers，Point storehouse equipressure preheater is provided with pressure-bearing shell，It is respectively arranged at two ends with the water inlet connected with one-level economizer and the outlet connected with two grades of economizers at pressure-bearing shell，Some grades of pre-heating cabins are set between water inlet and outlet，Deflection plate assembly it is provided with between adjacent pre-heating cabin，Deflection plate assembly includes lower plate and upper plate，Ebb interval was constituted between lower plate and upper plate，The bottom of lower plate connects with pressure-bearing shell，The upper edge of lower plate is set to the hot water of upper level pre-heating cabin and flowed to the transition limit of ebb interval，The top of upper plate connects with pressure-bearing shell，The lower edge of upper plate is set to hot water and is flowed to the baffling limit of next stage pre-heating cabin by ebb interval excessively，It is equipped with pipe heat exchanger in the pre-heating cabin of every one-level，Pipe heat exchanger in adjacent pre-heating cabin is connected in series，Pipe heat exchanger in the first order pre-heating cabin of water inlet connects with used heat water tank，Pipe heat exchanger in the afterbody pre-heating cabin of outlet connects with therrmodynamic system exhaust steam exhaustor，Top between adjacent pre-heating cabin the pressure pipe such as is all passed through and is connected.
The technical problem to be solved in the present invention can also be come to realize further by the following technical programs, and the pressure pipe such as described is installed on upper plate.
The technical problem to be solved in the present invention can also be come to realize further by the following technical programs, a bypass pipe it is also associated with between feed pump and boiler feed water mouth, it is provided with arm I between connecting tube I and bypass pipe between one-level economizer and point storehouse equipressure preheater, it is provided with arm II between connecting tube II and bypass pipe point between storehouse equipressure preheater and two grades of economizers, equipped with a reversal valve group on arm I, equipped with No. two reversal valve groups on arm II, equipped with one-level economizer bypass valve group on bypass pipe between arm I and feed pump, equipped with a bypass valve group on bypass pipe between arm I and arm II, equipped with No. two bypass valve groups on bypass pipe between arm II and boiler feed water mouth；Equipped with one-level economizer inlet valve group on pipeline between feed pump and one-level economizer, equipped with one-level economizer exit valve group in connecting tube I between one-level economizer and arm I, equipped with a point storehouse equipressure preheater inlet valve group in connecting tube I between arm I and point storehouse equipressure preheater, divide in the connecting tube II between storehouse equipressure preheater and arm II equipped with a point storehouse equipressure preheater outlet valve group, equipped with two grades of economizer inlet valve groups in connecting tube II between arm II and two grades of economizers, equipped with two grades of economizer exit valve groups on pipeline between two grades of economizers and boiler feed water mouth.
The technical problem to be solved in the present invention can also be come to realize further by the following technical programs, and the joint of the pipe heat exchanger in adjacent pre-heating cabin is provided with condensate pipe, and condensate pipe is connected with used heat water tank by a point storehouse equipressure preheater drain valve.
The technical problem to be solved in the present invention can also be come to realize further by the following technical programs, equipped with exhaust steam control valve group on pipeline between therrmodynamic system exhaust steam exhaustor and the pipe heat exchanger in the afterbody pre-heating cabin of outlet, connect at exhaust steam control valve group air intake and have exhaust steam vertical pipe, equipped with exhaust steam inline valve group on exhaust steam vertical pipe.
The technical problem to be solved in the present invention can also be come to realize further by the following technical programs, it is provided with bypass circuit pipe between storehouse equipressure preheater and two grades of economizer exit point, equipped with circulating pump on bypass circuit pipe, equipped with pump inlet valve group on bypass circuit pipe between circulating pump and two grades of economizer exit, equipped with outlet valve of circulating pump group on the bypass circuit pipe between circulating pump and point storehouse equipressure preheater.
The present invention is compared with prior art, the waste thermal energy carrier (flue gas, exhaust steam) of the feedwater of steam boiler and therrmodynamic system does partition reverse flow in affined space, by stage by stage, the heat exchange of point echelon, the heat energy entrained by spent heat-carrier is exchanged to greatest extent and feeds water to steam boiler.The process that this technical scheme realizes is divided into three heat exchange stages, the first heat exchange stage to be that steam boiler feedwater carries out heat exchange with the low temperature flue gas being ready to cleaner unit in one-level economizer；Second heat exchange stage was that steam boiler feedwater carries out heat exchange with exhaust steam in point storehouse equipressure preheater, this heat exchange stage point echelon is carried out, the number of echelon is exactly the storehouse number of this point of storehouse equipressure preheater, and the setting of point equipressure preheater storehouse, storehouse number is the exhaust steam quantity according to whole therrmodynamic system and pressure determines；3rd heat exchange stage was that steam boiler feedwater carries out heat exchange with the high-temperature flue gas just leaving steam boiler burner hearth in two grades of economizers.To the feed-water preheating entered before boiler, this warm is stage by stage, carries out heat exchange to point echelon, makes steam boiler feedwater be preheating to relative to the tradition higher temperature of preheating mode before entering boiler, to reach the purpose that heat energy makes full use of.Thus bring considerable income to user while saving the energy.
Accompanying drawing explanation
Fig. 1 is the structure diagram of the present invention.
Detailed description of the invention
nullA kind of heat energy comprehensive utilization device of the therrmodynamic system containing steam boiler，Including feed pump and the boiler feed water mouth that connects with boiler，The low temperature flue gas being sequentially provided with and being ready to cleaner unit on pipeline between feed pump and boiler feed water mouth carries out the one-level economizer of heat exchange、With two grades of economizers that the high-temperature flue gas just leaving steam boiler burner hearth carries out heat exchange，A point storehouse equipressure preheater it is provided with on pipeline between one-level economizer and two grades of economizers，Point storehouse equipressure preheater is provided with pressure-bearing shell，It is respectively arranged at two ends with the water inlet connected with one-level economizer and the outlet connected with two grades of economizers at pressure-bearing shell，Some grades of pre-heating cabins are set between water inlet and outlet，Deflection plate assembly it is provided with between adjacent pre-heating cabin，Deflection plate assembly includes lower plate and upper plate，Ebb interval was constituted between lower plate and upper plate，The bottom of lower plate connects with pressure-bearing shell，The upper edge of lower plate is set to the hot water of upper level pre-heating cabin and flowed to the transition limit of ebb interval，The top of upper plate connects with pressure-bearing shell，The lower edge of upper plate is set to hot water and is flowed to the baffling limit of next stage pre-heating cabin by ebb interval excessively，It is equipped with pipe heat exchanger in the pre-heating cabin of every one-level，Pipe heat exchanger in adjacent pre-heating cabin is connected in series，Pipe heat exchanger in the first order pre-heating cabin of water inlet connects with used heat water tank，Pipe heat exchanger in the afterbody pre-heating cabin of outlet connects with therrmodynamic system exhaust steam exhaustor，Top between adjacent pre-heating cabin the pressure pipe such as is all passed through and is connected.
The pressure pipe such as described is installed on upper plate.
A bypass pipe it is also associated with between feed pump and boiler feed water mouth, it is provided with arm I between connecting tube I and bypass pipe between one-level economizer and point storehouse equipressure preheater, it is provided with arm II between connecting tube II and bypass pipe point between storehouse equipressure preheater and two grades of economizers, equipped with a reversal valve group on arm I, equipped with No. two reversal valve groups on arm II, equipped with one-level economizer bypass valve group on bypass pipe between arm I and feed pump, equipped with a bypass valve group on bypass pipe between arm I and arm II, equipped with No. two bypass valve groups on bypass pipe between arm II and boiler feed water mouth；Equipped with one-level economizer inlet valve group on pipeline between feed pump and one-level economizer, equipped with one-level economizer exit valve group in connecting tube I between one-level economizer and arm I, equipped with a point storehouse equipressure preheater inlet valve group in connecting tube I between arm I and point storehouse equipressure preheater, divide in the connecting tube II between storehouse equipressure preheater and arm II equipped with a point storehouse equipressure preheater outlet valve group, equipped with two grades of economizer inlet valve groups in connecting tube II between arm II and two grades of economizers, equipped with two grades of economizer exit valve groups on pipeline between two grades of economizers and boiler feed water mouth.
The joint of the pipe heat exchanger in adjacent pre-heating cabin is provided with condensate pipe, and condensate pipe is connected with used heat water tank by a point storehouse equipressure preheater drain valve.
Equipped with exhaust steam control valve group on pipeline between therrmodynamic system exhaust steam exhaustor and the pipe heat exchanger in the afterbody pre-heating cabin of outlet, connect at exhaust steam control valve group air intake and have exhaust steam vertical pipe, equipped with exhaust steam inline valve group on exhaust steam vertical pipe.
It is provided with bypass circuit pipe between storehouse equipressure preheater and two grades of economizer exit point, equipped with circulating pump on bypass circuit pipe, equipped with pump inlet valve group on bypass circuit pipe between circulating pump and two grades of economizer exit, equipped with outlet valve of circulating pump group on the bypass circuit pipe between circulating pump and point storehouse equipressure preheater.When water do not gone up by boiler, running circulating pump, the water in point storehouse equipressure preheater and two grades of economizers forms circulation and exchanges the heat energy of flue gas for.
Below in conjunction with the accompanying drawings technical scheme is described further, and does not constitute the restriction to right of the present invention.
nullIn figure: 1、Feed pump，2、One-level economizer bypass valve group，3、One-level economizer inlet valve group，4、One-level economizer，5、One-level economizer exit valve group，6、A number reversal valve group，7、A number bypass valve group，8、Divide storehouse equipressure preheater inlet valve group，9、Divide storehouse equipressure preheater，10、Etc. pressure pipe，11、Pipe heat exchanger，12、Deflection plate，13 relief valve，14、Pressure gauge，15、Water-level gauge，16、Divide storehouse equipressure preheater outlet valve group，17、No. two reversal valve groups，18、Two grades of economizer inlet valve groups，19、Two grades of economizers，20、Two grades of economizer exit valve groups，21、No. two bypass valve groups，22、Boiler feed water mouth，23、Pump inlet valve group，24、Circulating pump，25、Outlet valve of circulating pump group，26、The in line mouth of exhaust steam，27、Exhaust steam inline valve group，28、Exhaust steam control valve group，29、Divide storehouse equipressure preheater blowoff valve，30、Divide storehouse equipressure preheater drain valve，31、Used heat water tank.
The waste thermal energy carrier (flue gas, exhaust steam) of the feedwater of steam boiler and therrmodynamic system does partition reverse flow in affined space, by stage by stage, the heat exchange of point echelon, the heat energy entrained by spent heat-carrier is exchanged to greatest extent and feeds water to steam boiler.This technical scheme is to be realized by a kind of steam boiler heat energy comprehensive utilization device of the present invention, the process realized is divided into three heat exchange stages, the first heat exchange stage to be that steam boiler feedwater carries out heat exchange with the low temperature flue gas being ready to cleaner unit in one-level economizer；Second heat exchange stage was that steam boiler feedwater carries out heat exchange with exhaust steam in point storehouse equipressure preheater, this heat exchange stage point echelon is carried out, the number of echelon is exactly the storehouse number of this point of storehouse equipressure preheater, and the setting of point equipressure preheater storehouse, storehouse number is the exhaust steam quantity according to whole therrmodynamic system and pressure determines；3rd heat exchange stage was that steam boiler feedwater carries out heat exchange with the high-temperature flue gas just leaving steam boiler burner hearth in two grades of economizers.
It is disposed with fabricated deflection plate in described point storehouse equipressure preheater, these deflection plates are while realizing dividing storehouse by preheater, also control height and the flow direction of water in each storehouse, water at low temperature in each bin is made to enter the bottom of bin all the time, based on physical principle, high-temperature water after heat exchange intensification can arrive the top of bin automatically, and is entered bottom next storehouse by next stage deflection plate, then the heat exchange carrying out next echelon heats up.Exhaust steam inversely flows through the pipe heat exchanger of each bin successively with feedwater, change thermogenetic condensation water to be discharged by the drain valve of each group of pipe heat exchanger, used heat water tank is entered stand-by through piping, remaining steam enters the pipe heat exchanger of next bin, and rule is until whole bin all passes through according to this.The reverse flow of the present invention and Fen Cang, fully can exchange the heat energy entrained by exhaust steam to boiler feedwater.Between each storehouse of the present invention on deflection plate etc. pressure pipe make each storehouse equipressure be easy to steam boiler feedwater successfully flow according to default direction between each bin in point storehouse equipressure preheater.Point storehouse equipressure preheater of the present invention uses and can bear and the housing of boiler equal pressure so that feedwater preheats temperature in high temperature storehouse can exceed well over boiling point.On point storehouse equipressure preheater equipped with relief valve, Pressure gauge, water-level gauge, to ensure safety and the acquisition of correct information.Divide on the equipressure preheater of storehouse equipped with blowoff valve, in order to divide the cleaning within the equipressure preheater of storehouse.
Described feed pump is placed between deoxygenation water tank (softened water tank) and one-level economizer.Feed pump water inlet water temperature is under the state of temperature that will not produce vaporization all the time, it is to avoid in waste heat utilization system, common feed pump gas blocks up phenomenon at present.Work with making feed pump all-the-time stable, it is ensured that water normally gone up by boiler.The feed pump of current most of steam boiler is all centrifugal multistage pump multiple centrifugal pump, and during centrifugal pump work, the entry position of its impeller is in negative pressure state.The water entering impeller once exceedes certain temperature, will in this negative pressure region carburation by evaporation, a small amount of vaporization affect feed pump steady operation, and significant vaporization will form vapour locking so that feedwater interruption, and then jeopardizes the operation safety of boiler.This is also the bottleneck that current boiler feedwater preheating temperature is the highest.The layout that the present invention is different from traditional location by feed pump position overcomes this bottleneck.
The high temperature storehouse of described point storehouse equipressure preheater has the function of high temperature pressure water tank concurrently, so that the steam boiler of the therrmodynamic system of those intermittent discharge exhaust steam is continuously available high temperature preheating feedwater.Existence due to point storehouse, native system is made to be totally different from the boiler feedwater pre-heating system of the most common UTILIZATION OF VESIDUAL HEAT IN, can be used not only for the system discharged used steam continuously, it is also possible to by the setting of high temperature storage capacity size, make full use of the heat of intermittent discharge exhaust steam.Simultaneously as the existence of point storehouse equal pressure pressure tank body of aqueous vapor heat exchanger so that the later high-temperature water of preheating is carried out long-time heat preservation and becomes relatively easy feasible.
Due to the fact that and be configured with perfect valve group and pipeline that open and close corresponding valve group can extremely flexibly process various abnormal conditions.Below the properly functioning of the present invention and misoperation are described: under normal circumstances: the feed-water preheating system constituted along 1 feed pump, 3 valve groups, 4 one-level economizers, 5 valve groups, 8 valve groups, 9 warehouse separated type heaters, 16 valve groups, 18 valve groups, 19 2 grades of economizers, 20 valve groups and relevant pipeline that feeds water arrives boiler feed water mouth.Feed water and complete the heat exchange with flue gas and exhaust steam during advancing.At this time valve group 2,6,7,17,21 is closed.
Abnormal conditions and the following several situations of process:
1, when one-level economizer breaks down, feed water the feed-water preheating system arrival boiler feed water mouth constituted along 1 feed pump, 2 valve groups, 6 valve groups, 8 valve groups, 9 warehouse separated type heaters, 16 valve groups, 18 valve groups, 19 2 grades of economizers, 20 valve groups.At this time valve group 3,5,7,17,21 is closed.
2, when a point storehouse equipressure preheater breaks down, feed water the feed-water preheating system arrival boiler feed water mouth constituted along 1 feed pump, 3 valve groups, 4 one-level economizers, 5 valve groups, 6 valve groups, 7 valve groups, 17 valve groups, 18 valve groups, 19 2 grades of economizers, 20 valve groups.At this time valve group 2,8,16,21 is closed.
3, when two grades of economizers break down, the feed-water preheating system constituted along 1 feed pump, 3 valve groups, 4 one-level economizers, 5 valve groups, 8 valve groups, 9 warehouse separated type heaters, 16 valve groups, 17 valve groups, 21 valve groups that feeds water arrives boiler feed water mouth.At this time valve group 2,6,7,18,20 is closed.
4, when one or two grades of economizers break down simultaneously, the feed-water preheating system constituted along 1 feed pump, 2 valve groups, 6 valve groups, 8 valve groups, 9 warehouse separated type heaters, 16 valve groups, 17 valve groups, 21 valve groups along feedwater that feeds water arrives boiler feed water mouth.At this time valve group 3,5,7,18,20 is closed.
5, when one-level economizer and a point storehouse equipressure preheater break down simultaneously, feed water the feed-water preheating system arrival boiler feed water mouth constituted along 1 feed pump, 2 valve groups, 7 valve groups, 17 valve groups, 18 valve groups, 19 2 grades of economizers, 20 valve groups.At this time valve group 3,5,6,7,18,21 is closed.
6, when two grades of economizers and a point storehouse equipressure preheater break down simultaneously, feed water along the feed-water preheating system arrival boiler feed water mouth of 1 feed pump, 3 valve groups, 4 one-level economizers, 5 valve groups, 6 valve groups, 7 valve groups, 21 valve groups, composition.At this time valve group 2,8,16,17,18,20 is closed.
7, when one or two grades of economizers and warehouse separated type heat exchanger break down simultaneously, feed water along 1 feed pump, 2 valve groups, 7 valve groups, 21 valve groups and the pipeline arrival boiler feedwater mouth being associated.
8, when boiler upper water temporarily, under the effect of circulating pump, the water in point equipressure preheater high temperature storehouse, storehouse and two grades of economizers forms circulation and exchanges the heat energy of flue gas for.
2,6 in above-mentioned eight kinds of abnormal conditions:, 7 three kind of situation be when occurring, 28 valve groups are closed, and 27 valve groups are opened exhaust steam and discharged by line mouth.Other five kinds of abnormal conditions and properly functioning time, 28 valve groups open, and 27 valve groups are closed, and exhaust steam sequentially enters respectively organizes heat exchanger in warehouse separated type equipressure preheater, condenses water and is emitted into used heat water tank for other purposes by each steam trap and associated conduit.
In sum, the present invention is a kind of for containing steam boiler and the therrmodynamic system that has exhaust steam to discharge, reaches to save the technological means of energy additional income by making full use of used heat.
Claims (6)
- null1. the heat energy comprehensive utilization device of the therrmodynamic system containing steam boiler，It is characterized in that: include feed pump and the boiler feed water mouth connected with boiler，The low temperature flue gas being sequentially provided with and being ready to cleaner unit on pipeline between feed pump and boiler feed water mouth carries out the one-level economizer of heat exchange、With two grades of economizers that the high-temperature flue gas just leaving steam boiler burner hearth carries out heat exchange，A point storehouse equipressure preheater it is provided with on pipeline between one-level economizer and two grades of economizers，Point storehouse equipressure preheater is provided with pressure-bearing shell，It is respectively arranged at two ends with the water inlet connected with one-level economizer and the outlet connected with two grades of economizers at pressure-bearing shell，Some grades of pre-heating cabins are set between water inlet and outlet，Deflection plate assembly it is provided with between adjacent pre-heating cabin，Deflection plate assembly includes lower plate and upper plate，Ebb interval was constituted between lower plate and upper plate，The bottom of lower plate connects with pressure-bearing shell，The upper edge of lower plate is set to the hot water of upper level pre-heating cabin and flowed to the transition limit of ebb interval，The top of upper plate connects with pressure-bearing shell，The lower edge of upper plate is set to hot water and is flowed to the baffling limit of next stage pre-heating cabin by ebb interval excessively，It is equipped with pipe heat exchanger in the pre-heating cabin of every one-level，Pipe heat exchanger in adjacent pre-heating cabin is connected in series，Pipe heat exchanger in the first order pre-heating cabin of water inlet connects with used heat water tank，Pipe heat exchanger in the afterbody pre-heating cabin of outlet connects with therrmodynamic system exhaust steam exhaustor，Top between adjacent pre-heating cabin the pressure pipe such as is all passed through and is connected.
- The heat energy comprehensive utilization device of the therrmodynamic system containing steam boiler the most according to claim 1, it is characterised in that: the pressure pipe such as described is installed on upper plate.
- The heat energy comprehensive utilization device of the therrmodynamic system containing steam boiler the most according to claim 1, it is characterized in that: between feed pump and boiler feed water mouth, be also associated with a bypass pipe, it is provided with arm I between connecting tube I and bypass pipe between one-level economizer and point storehouse equipressure preheater, it is provided with arm II between connecting tube II and bypass pipe point between storehouse equipressure preheater and two grades of economizers, equipped with a reversal valve group on arm I, equipped with No. two reversal valve groups on arm II, equipped with one-level economizer bypass valve group on bypass pipe between arm I and feed pump, equipped with a bypass valve group on bypass pipe between arm I and arm II, equipped with No. two bypass valve groups on bypass pipe between arm II and boiler feed water mouth；Equipped with one-level economizer inlet valve group on pipeline between feed pump and one-level economizer, equipped with one-level economizer exit valve group in connecting tube I between one-level economizer and arm I, equipped with a point storehouse equipressure preheater inlet valve group in connecting tube I between arm I and point storehouse equipressure preheater, divide in the connecting tube II between storehouse equipressure preheater and arm II equipped with a point storehouse equipressure preheater outlet valve group, equipped with two grades of economizer inlet valve groups in connecting tube II between arm II and two grades of economizers, equipped with two grades of economizer exit valve groups on pipeline between two grades of economizers and boiler feed water mouth.
- The heat energy comprehensive utilization device of the therrmodynamic system containing steam boiler the most according to claim 1, it is characterized in that: the joint of the pipe heat exchanger in adjacent pre-heating cabin is provided with condensate pipe, condensate pipe is connected with used heat water tank by a point storehouse equipressure preheater drain valve.
- The heat energy comprehensive utilization device of the therrmodynamic system containing steam boiler the most according to claim 1, it is characterized in that: equipped with exhaust steam control valve group on the pipeline between therrmodynamic system exhaust steam exhaustor and the pipe heat exchanger in the afterbody pre-heating cabin of outlet, connect at exhaust steam control valve group air intake and have exhaust steam vertical pipe, equipped with exhaust steam inline valve group on exhaust steam vertical pipe.
- The heat energy comprehensive utilization device of the therrmodynamic system containing steam boiler the most according to claim 1, it is characterized in that: be provided with bypass circuit pipe point between storehouse equipressure preheater and two grades of economizer exit, equipped with circulating pump on bypass circuit pipe, equipped with pump inlet valve group on bypass circuit pipe between circulating pump and two grades of economizer exit, equipped with outlet valve of circulating pump group on the bypass circuit pipe between circulating pump and point storehouse equipressure preheater.
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| AU651315B2 (en) * | 1989-05-26 | 1994-07-21 | Marcel Sultan | Waste heat recovery apparatus |
| CN201053672Y (en) * | 2007-06-25 | 2008-04-30 | 姚兴玉 | Steaming boiler exhaust heat recovery device |
| CN203628621U (en) * | 2013-12-28 | 2014-06-04 | 临沂恒昌焦化股份有限公司 | Medium-pressure boiler water-circulation system |
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