CN2167270Y - Heat oxygen removing device - Google Patents
Heat oxygen removing device Download PDFInfo
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- CN2167270Y CN2167270Y CN 93200385 CN93200385U CN2167270Y CN 2167270 Y CN2167270 Y CN 2167270Y CN 93200385 CN93200385 CN 93200385 CN 93200385 U CN93200385 U CN 93200385U CN 2167270 Y CN2167270 Y CN 2167270Y
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Abstract
The utility model relates to a heat oxygen removing device which can heat the supplying water of a boiler by using the 'residual heat' of smoke gas discharged by the boiler and can discharge the gas of the boiler. The utility model comprises a supplying water heating box, a supplying water oxygen removing box, an oxygen removing and air collecting head, an oxygen removing water chiller, a front smoke box, a back smoke box and a bypass smoke pipe. The utility model is a heat exchanging and oxygen removing device usinga glass pipe (or enamel pipe or ceramic pipe). Supplying water is heated by smoke gas until the supplying water 'boils'. Therefore, gas contained in water is removed, and the purpose of energy saving, oxygen removing for supplying water, smoke gas desulphurization and dust removing are achieved.
Description
The utility model relates to and a kind ofly is used for boiler and utilizes the residual activity of boiler exhaust gas to come heated feed water so that the thermal deoxygenizing apparatus that the contained gas of feedwater is excluded.
At present, the exhaust gas temperature of the small-sized industrial boiler of the station boiler of big capacity, high parameter and general low parameter is 130-170 ℃; Heat loss due to exhaust gas makes boiler thermal output reduce 6-10%.The deaeration plant of boiler feedwater has thermal de-aeration, deaeration in condenser, parsing deoxygenation at present in addition, and chemical deoxidization, the redoxite deoxygenation.These equipment respectively will be with a lot of steam, electric energy, chemicals, and the method that has also can be brought side effect; The about 0.12-0.15 of operation price unit/ton water.
The purpose of this utility model provides a kind of device that utilizes flue gas " waste heat " heating, deoxygenation, it not only can remove contained gas in the feedwater (or supplementing water), and can reduce final exhaust gas temperature significantly, and reduce heat loss due to exhaust gas, improve the boiler room thermal efficiency.Hold concurrently simultaneously flue gas is carried out desulfurization and dedusting.
The purpose of this utility model realizes by following measure.
A kind of thermal deoxygenizing apparatus, comprise front smoke box, back smoke box, it is characterized in that making flue gas laterally to skim over glass tube tube bundle heat-transfer surface and utilize flue gas " waste heat " heating to flow through at least one series connection and the feedwater heating cabinet that is communicated with in parallel of the boiler feedwater in the described glass tube pipe or flue gas is flow through in each pipe of glass tube tube bundle, utilize flue gas " waste heat " heating to flow through at least one series connection and the feedwater heating cabinet that is communicated with in parallel of the outer boiler feedwater of described glass tube; Further heating is in the deoxygenation gas collection head that sprays the described feedwater in the state and discharge described feedwater bubbing; Described feedwater is added to " boiling " and separate out the water-feeding oxygen-removal box of contained gas; Make described deaerated water and described feedwater and flushing water carry out the deaerated water cooler of heat exchange and be provided with the bypass smoke pipe of gate.
Operation principle of the present utility model is: this device is arranged on the boiler exhaust gas pipe (should be arranged on after the dust settler for the configuration dry collector, should be arranged at before the deduster for configuration wet scrubber such as gallet water curtain dust collector--press flue gas flow).
The front smoke box flue that is connected with the boiler exhaust gas pipe by self-shooter is communicated with front smoke box, and described front smoke box is communicated with water-feeding oxygen-removal box, feedwater heating cabinet and back smoke box again.Back smoke box is discharged flue gas by the back smoke box flue that is communicated with it.Draw ventilating smoke tube on one side by each gate and by forward and backward smoke box flue place, described bypass smoke pipe and front smoke box, water-feeding oxygen-removal box, feedwater heating cabinet and back smoke box are connected in parallel.
The deaerated water cooler is communicated with the feedwater heating cabinet by pipeline.The feedwater deaeration upper box part is equipped with deoxygenation gas collection head.
Enter the front smoke box of this device by the front smoke box flue from the flue gas of boiler exhaust gas pipe, described flue gas passes through in the pipe of water-feeding oxygen-removal box and the glass tube tube bundle of feedwater in the heating cabinet again or described flue gas laterally skims over the outer surface of the glass tube tube bundle in the feedwater heating cabinet and flow to the back smoke box, discharges by back smoke box flue then.
Liquid level is crossed when hanging down in this device needs maintenance, cleaning glass tube or water-feeding oxygen-removal box, can open the automatic and adjustable gate and the self-shooter of bypass smoke pipe, close two self-shooters on the forward and backward smoke box flue simultaneously so that flue gas from the bypass smoke pipe by and heating glass pipe tube bundle not.In addition, emerge steam more for a long time, can suitably open the automatic and adjustable gate of bypass smoke pipe and open self-shooter, make flue gas part bypass to reduce the enthalpy drop of flue gas in this device when the blast pipe of deoxygenation gas collection head.
Feedwater enters the deaerated water cooler by feed-water inlet, receive the heat energy of deaerated water within it after, by causing feed-regulating valve through conduit for water out, enter the feedwater heating cabinet then.In described feedwater heating cabinet, feedwater is folded to through several horizontal deflection plates, segmental baffle on the way and laterally skims over the delivery port of glass tube tube bundle to the heating cabinet that feeds water several times.Enter in the water of the feedwater heating cabinet glass tube in also can each the little tube bundle district that left and right midfeather, each diaphragm plate, right tube sheet and left tube sheet limited in described feedwater heating cabinet and flow through, until the delivery port of described feedwater heating cabinet.Promptly when flue gas by glass tube in by the time, the feedwater skim over outward by glass tube; When flue gas skimmed over outside by glass tube, feedwater was by flowing through in the glass tube.
The feedwater that comes the self-water-supply heating cabinet enters the sparge pipe of deoxygenation gas collection head through aqueduct, and the feedwater of ejection evenly falls through packing layer; Packing layer and annular spraying steam pipe and and sparge pipe between the space, particularly in packing layer, steam from bottom to top makes further heating of feedwater (auxiliary heating) with from top to bottom water even contact; Then, the cross-current that feeds water is from top to bottom crossed water-feeding oxygen-removal box inner glass tube bunch outer surface, and the flue gas that is flow through in the pipe is heated to " boiling " or stockpile bottom in water-feeding oxygen-removal box, continue to be heated to " boiling " by flue gas in the pipe of glass tube bundle thus separate out contained gas.When feedwater when feedwater is walked in the glass tube in the heating cabinet, " boiling " reaches the deoxygenation purpose by being steam heated to of spraying of spraying steam coil pipe in feedwater removes case in feedwater.
From the deaerated water of water-feeding oxygen-removal box flow into the deaerated water cooler within it deaerated water be cooled to and then flow to boiler feed pump about 80 ℃ and boost and send into boiler.
When the water level in the water-feeding oxygen-removal box was lower than certain value, the automatic drain valve of feedwater heating cabinet was opened automatically, and deaerated water boosts and squeezes into boiler to guarantee boiler water supply with feedwater deaerated water cooler to the boiler feed pump of flowing through.
The utility model has the advantages that provides a kind of new boiler supply water deaerating equipment, and it had both saved a large amount of energy, reached the purpose of boiler feedwater being carried out deoxygenation again.Avoided the operation price height of the various deaerating plants existence of present use, big energy-consuming and the additional disadvantage of bringing.To hot-water boiler, also can utilize except that the unnecessary flue gas heat energy that carries out as heated feed water the deoxygenation and heat heating hot water.Flue gas is carried out desulfurization and dedusting.
Enumerating example below with reference to accompanying drawing is further described such scheme.
Accompanying drawing 1 is the front view of the utility model first embodiment;
Accompanying drawing 2 is A-A cutaway views of accompanying drawing 1;
Accompanying drawing 3 is front views of the utility model second embodiment;
Accompanying drawing 4 is A-A cutaway views of accompanying drawing 3;
Accompanying drawing 5 is vertical views of accompanying drawing 3;
Accompanying drawing 6 is accompanying drawing 2 left front, left back water tank perspective diagrams;
Accompanying drawing 7 is accompanying drawing 2 right front, right back water tank perspective diagrams;
Accompanying drawing 8 is perspective diagrams of feedwater heating cabinet and water-feeding oxygen-removal box in the accompanying drawing 3;
Accompanying drawing 9 is the utility model the 3rd embodiment front views;
Accompanying drawing 10 is the 4th embodiment front views of the present utility model.
Fig. 1, Fig. 2, Fig. 6, Fig. 7 are the utility model first embodiment.
The front smoke box flue 62 that is connected with boiler exhaust gas road 68 is provided with self-shooter 54 therebetween.Front smoke box flue 62 and front smoke box 6 are communicated with by flange.Front smoke box 6 is communicated with by flange with feedwater heating cabinet 1, is provided with seal washer between two adpting flanges.Feedwater is provided with the glass tube 24(that extends from left to right on many edges in the heating cabinet 1 as shown in Figure 2), many glass tubes 24 constitute the glass tube bundles, and are erected on left tube sheet 8, vertical clapboard 10A and the right tube sheet 9.Each plate in the described feedwater heating cabinet 1 is following setting: (Fig. 2) is arranged at intervals with left tube sheet 8, vertical clapboard 10A, right tube sheet 9 from left to right, and their marginal portion is welded in respectively on the shell 23 of feedwater heating cabinet 1; Three diaphragm plates 22,12,13,14,15 are symmetrical arranged at interval and weld continuously with described left tube sheet 8, vertical clapboard 10A, right tube sheet 9.Space between left side tube sheet 8 left side (see figure 2) diaphragm plates 22,17A downside and the shell 23 is divided into two by midfeather 10C and forms the two left front water tank 64(that seal mutually and see Fig. 6), left back water tank 65.Described left front water tank 64 bottoms are fixed with diaphragm plate 20A, 20B, and left front water tank 64 is divided into up big and down small two spaces, are pressed with rubber strip 60 between diaphragm plate 20A, the 20B.Diaphragm plate 20A, 20B and diaphragm plate 14,15 are positioned at same plane.One end of diaphragm plate 20A, 20B lower side space is communicated with water inlet 29, and a relative end is communicated with the tube bundle of glass tube 24. Diaphragm plate 20A, 20B upside space are communicated with the tube bundle of glass tube 24.Left back water tank 65 tops are fixed with diaphragm plate 18A, 18B and diaphragm plate 12,13 is positioned at same plane.One end in diaphragm plate 18A, 18B upside space is communicated with delivery port 31, and a relative end is communicated with the tube bundle of glass tube 24; Diaphragm plate 18A, the 18B lower side space is communicated with glass tube 24 tube bundles.Space between right tube sheet 9 right side (see figure 2) diaphragm plates 22,17B downside and the shell 23 is divided into two by midfeather 10D and forms the two right front water tank 66(that seal mutually mutually and see Fig. 7), right back water tank 67.Described right front water tank 66 tops are fixed with diaphragm plate 19A, 19B right front water tank 66 are divided into up-small and down-big two spaces, are pressed with rubber strip 60 between diaphragm plate 19A, the 19B.Diaphragm plate 19A, 19B and diaphragm plate 12,13 are positioned at same plane.Diaphragm plate 19A, 19B lower side space are communicated with the tube bundle of glass tube 24; Its upside space one end is communicated with the mouth of pipe 30A of conduit 30, and a relative end is communicated with glass tube 24 tube bundles.Right back water tank 67 bottoms are fixed with diaphragm plate 21A, 21B, and right back water tank 67 is divided into little down big two spaces of, and are pressed with rubber strip 60 between diaphragm plate 21A, the 21B.Diaphragm plate 21A, 21B and diaphragm plate 14,15 are positioned at same plane.Diaphragm plate 21A, 21B, an end of lower side space is communicated with the mouth of pipe 30B of conduit 30, and a relative end is communicated with glass tube 24 tube bundles; The upside space of diaphragm plate 21A, 21B is communicated with glass tube 24 tube bundles.
Every glass tube in glass tube 24 tube bundles passes each plate respective through hole, with the direction perpendicular to left tube sheet 8, extends to right tube sheet 9 and setting at interval side by side by left tube sheet 8 parallel lines, so that described four water tanks, 64,65,66,67 corresponding parts are communicated with respectively.Be provided with many steel hydraulic flushing ash pipes 57 between left side tube sheet 8, the right tube sheet 9, described hydraulic flushing ash pipe 57 1 ends sealing, the other end links to each other with flushing water outlet 59, punches on its tube wall, and injection water is with the dust stratification on the flushing glass tube 24 thus.Be provided with the vibrationproof seal washer between glass tube, hydraulic flushing ash pipe and through hole.The below of feedwater heating cabinet 1 is provided with a plurality of discharge outlet, adorns draining valve (50A, 50B, 50C, 50D) on the drainpipe.The glass tube tube bundle that described parallel interval arranged side by side is provided with and conduit will described left front water tank, right front water tank, right back water tank and left back water tank eight clearance spaces be connected and constitute a Communicating device of the heat tunnel that feeds water.
The other end of feedwater heating cabinet 1 is connected with back smoke box 7 by flange.Be provided with seal washer between flange.Back smoke box 7 is connected with back smoke box flue 63 by flange, and back smoke box flue 63 is connected with rear portion smoke pipe 69 by self-shooter 55.
Water-feeding oxygen-removal box 2 is positioned at the diaphragm plate 22 of shell 23, upside and shell 23 tops of 17A, 17B have rectangular opening, and there is upwardly extending flange cutting back in described hole portion, is communicated with deoxygenation gas collection head by described flange, is provided with packing ring between ring flange.Be provided with in the water-feeding oxygen-removal box 2 on jet coil 40, gripper shoe 11 coil pipes and have jetted hole, the import 38 of coil pipe 40 is communicated with vapour source by automatic regulating valve 37.The bottom of water-feeding oxygen-removal box 2 is provided with deaerated water outlet 43, and described outlet 43 is communicated with the deaerated water import 45 of deaerated water cooler 4 by conduit 44.
Deaerated water cooler 4 is made of pipe in the outer tube suit, the inner and outer pipe end is all sealed, annular space between outer tube wall and the outer wall of inner tube is provided with described space is divided into dividing plate that at least one gives water-tight cavity and at least one flushing water annular seal space, describedly is provided with at least one feed-water inlet 25 and gives water out 26 to water-tight cavity; Described flushing water annular seal space is provided with at least one flushing water import 58 and at least one flushing water outlet 59.Deaerated water import 45 and deaerated water outlet 46 are connected with interior pipe two ends respectively.
Be provided with feedwater straight pipe and feedwater straight pipe valve 56 between feed-water inlet 25 and the deaerated water outlet 46.
The two ends of bypass smoke pipe 5 are communicated with boiler exhaust gas pipe 68 and rear portion flue 69 respectively by automatic and adjustable gate 52 and self-shooter 53.
The workflow of described device is as follows.Close by the self-shooter 54(automatic and adjustable gate of opening this moment 52 from 130-170 ℃ flue gas of boiler exhaust gas pipe 68) enter front smoke box flue 62, enter feedwater heating cabinet 1 by the front smoke box 6 that is communicated with front smoke box flue 62, flue gas enters back smoke box 7 laterally skim over glass tube 24 tube bundle outer surfaces in feedwater heating cabinet 1 after, then by back smoke box flue 63, the self-shooter 55(self-shooter 53 this moment of unlatching cuts out) discharge by rear portion flue 69.
, in this interval, feed water and heated by flowing to water out 26 between the inner and outer pipes of deaerated water cooler 4 from the boiler feedwater of feed-water inlet 25 by the deaerated water in the interior pipe pipe to water-tight cavity.
Come the feedwater of self-water-supply outlet 26 to flow to the lower space that water inlet 29 enters left front water tank 64 by water inlet control valve 27, and then flow in the space of water tank successively by reaching intermediate conductor 30 in the pipe of glass tube 24 tube bundles, mobile backhaul is: left front water tank 64
In the glass tube inner glass tube
----→ right front water tank 66 bottoms----→ left front water tank 64 tops, bottom
In the interior intermediate conductor glass tube of glass tube
----→ right front water tank 66 tops----→ right back water tank 67 bottoms---→
In the glass tube inner glass tube
----delivery port 31 outflows are also passed through in → right back water tank 67 tops----→ left back water tank 65 tops in left back water tank 65 bottoms.The flue gas heating of glass tube 24 tube bundle outer surfaces is laterally skimmed in feedwater in this section flow process.
The conduit 32 that is connected with delivery port, to provide the sparge pipe of delivering in the deoxygenation gas collection head 3 34 by water inlet 33, feedwater is by the ejection of the hole for water spraying on sparge pipe 34 tube walls and in packing layer 35 falls into water-feeding oxygen-removal box 2, the Steam Heating that is risen on the way, amass in the feedwater of water-feeding oxygen-removal box 2 bottoms and further be heated to " boiling ", separate out contained gas and reach the deoxygenation purpose by steam from automatic regulating valve 37, steam inlet 38, jet coil 40 ejections.The described gas of separating out rises, and drains into atmosphere by way of packing layer 35 to blast pipe 41.
Through deaerated water outlet 43, aqueduct 44 deaerated water is delivered to deaerated water import 45, deaerated water is flowed through and is arrived deaerated water outlet 46 in the interior pipe of deaerated water cooler 4.In this section flow process, the deaerated water in the interior pipe is inner, feedwater and flushing water between outer tube in the annular space are cooled to uniform temperature.Cooled deaerated water is sent to feed pump by deaerated water outlet 46 and boosts and arrive boiler.
Under the situation that described device need overhaul, water level is low in flushing and the water-feeding oxygen-removal box, close self- shooter 54,55, open automatic and adjustable gate 52 and self-shooter 53, make flue gas pass through bypass smoke pipe 5 and discharge.
When the outer surface of glass tube 24 tube bundles in the flushing feedwater heating cabinet 1, flushing water is flowed through between the inner and outer pipe of flushing water import 58, deaerated water cooling 4 annular flushing water annular seal space, flushing water outlet 59 to hydrodynamic cleaning pipe 57, spray by the hole for water spraying on described hydrodynamic cleaning pipe 57 tube walls, behind the flushing water flushing glass tube 24 tube bundle outer surfaces, discharge through draining valve 50A, 50B, 50C, 50D.
When described thermal deoxygenizing apparatus overhauled or washes, feedwater was not by this device.At this moment, feedwater straight pipe valve 56 is opened, and feed pump is directly delivered in feedwater.
When boiler capacity was big, the feedwater heating cabinet 1 of described device was two or more, and was connected with series connection and form in parallel, reached thus and strengthened the purpose of exerting oneself.Other parts are all with aforementioned in this device.
Fig. 3-5, Fig. 8 are second embodiment of the present utility model.The front smoke box flue 62 that is connected with boiler exhaust gas pipe 68 is provided with self-shooter 38 therebetween.Front smoke box flue 62 and front smoke box 6 are communicated with by flange.Front smoke box 6 is communicated with by flange with (Fig. 3) space, water-feeding oxygen-removal box 2 interior left tube sheet B left side, is provided with seal washer between two adpting flanges.Water-feeding oxygen-removal box 2 places in the same housing 16 with feedwater heating cabinet 1, and dividing plate 9 left sides (Fig. 3) are water-feeding oxygen-removal box 2, and its right side is feedwater heating cabinet 1.Left side tube sheet 8, dividing plate 9, right tube sheet 12 and housing 16 inwalls welding and vertical with shell wall are divided into two seal cavities with described housing 16 inner chambers.Housing inner chamber between dividing plate 9 and right tube sheet 12 welds segmental baffle 10,11 at interval, by three diaphragm plates 13,14,15 of housing 16 inner chamber axis along continuous straight runs welding.The lower right side of housing 16 has water inlet 21.In the position that is positioned at water inlet 21 relative sides, described diaphragm plate 13,14,15 all has opening 13A, 14A, the 15A alternate with housing 16 inwalls.Have opening 10A, 11A on the segmental baffle 10,11.On the shell wall that housing 16 is arranged between dividing plate 9 and the segmental baffle 10, have delivery port 22.All have corresponding through hole on left side tube sheet 8, dividing plate 9, segmental baffle 10, the 11 right tube sheets 12, so that each the root glass tube 17 in glass tube 17 tube bundles is with the direction perpendicular to left tube sheet 8, extend to right tube sheet 12 and setting at interval side by side by left tube sheet 8 parallel lines, so that front smoke box 6 is communicated with to become a flue gas Communicating device by glass tube 24 tube bundles with back smoke box 7.Be added with the vibrationproof seal washer between each through hole and the glass tube 17.On the shell wall of the housing 16 between left tube sheet 8 and the dividing plate 9, establish opening and be connected to flange cutting back 2A, as being connected of water-feeding oxygen-removal box 2 and deoxygenation gas collection head 3.
On the shell wall of the housing 16 on left tube sheet 8 left sides and right tube sheet 12 right sides, be respectively equipped with draining valve 57A, 57B.On the shell wall of the housing 16 between left tube sheet 8 and the dividing plate 9, be provided with deaerated water outlet 29; On the shell wall of the housing 16 between dividing plate 9 and the segmental baffle 10, be provided with adjutage 32; Establish connecting pipe and automatic drain valve 33 is housed between described deaerated water outlet 29 and the described adjutage 32.
Deaerated water cooler 4 is made of pipe in the outer tube suit, and pipe left end (Fig. 3) was communicated with deaerated water outlet 29 by deaerated water import 30 in shut respectively each end of two pipes, and interior pipe right-hand member is communicated with deaerated water outlet 31.Be provided with in the annular space that between outer tube wall and outer wall of inner tube, forms described space is divided into dividing plate that at least one gives water-tight cavity and at least one flushing water annular seal space, describedly be provided with at least one feed-water inlet 18 that is communicated with feedwater and to water out 19 to water-tight cavity; Described flushing water annular seal space is provided with at least one flushing water import that is communicated with flushing water 42 and at least one flushing water outlet 43.Be provided with feedwater straight pipe valve 41 between feed-water inlet 18 and the deaerated water outlet 31.
Referring to Fig. 5.The left end of bypass smoke pipe 5 is communicated with boiler exhaust gas pipe 68 by automatic and adjustable gate 36.Its right-hand member is communicated with rear portion smoke pipe 69 by self-shooter 37.
The workflow of described device is as follows.130-170 ℃ flue gas from boiler exhaust gas pipe 68 is closed by the self-shooter 38(automatic and adjustable gate of opening this moment 36) enter front smoke box flue 62, enter the space in left tube sheet 8 left sides (Fig. 5) in the water-feeding oxygen-removal box 2 by the front smoke box 6 that is communicated with front smoke box flue 62.Flue gas flows through in the pipe by the every glass tube 24 in glass tube 24 tube bundles then, arrives the space on right tube sheet 12 right sides in the feedwater heating cabinet 1.Flue gas is closed by back smoke box 7, back smoke box flue 63, the self-shooter 39(self-shooter 37 this moment opened again) enter rear portion smoke pipe 69 and discharge.
From the feedwater of feed-water inlet 18 by arriving to water out 19 in the deaerated water cooler 4 to water-tight cavity.In this process, be heated to uniform temperature by the deaerated water in the interior pipe for the feedwater in the water-tight cavity.
Come the feedwater of self-water-supply outlet 19 to flow to water inlet 21 by water inlet control valve 20.Feedwater by the flow process that water inlet 21 flows in the feedwater heating cabinet 1 is: the epicoele that is flow to diaphragm plate 15 by diaphragm plate 15 cavity of resorptions by opening 15A, flow into the epicoele of diaphragm plate 14 by the opening 11A of segmental baffle 11, flow into the cavity of resorption of diaphragm plate 14 by opening 14A, flow into the cavity of resorption of diaphragm plate 13 by the opening 10A of segmental baffle 10, opening 13A by diaphragm plate 13 flows into the epicoele of diaphragm plate 13, and then is flowed out by delivery port 22.Feedwater is heated by the flue gas in the glass tube 24 in this section flow process.
Feedwater is by delivery port 22, and aqueduct 22A, water inlet 22B enter the sparge pipe 23 in the deoxygenation gas collection head 3, drops down onto in the water-feeding oxygen-removal box 2 by the ejection of the hole on its tube wall and by packing layer 24.In this splashes down process, further heated by the steam of annular spraying steam pipe 26 ejections, passed again later on flue gases heating in the glass tube 17 in the water-feeding oxygen-removal box 2 until " boiling " thus separate out contained gas.The gas of separating out from feedwater drains into atmosphere by the exhaust outlet 27 at deoxygenation gas collection head 3 tops, and feedwater becomes deaerated water thus.
Deaerated water is discharged by deaerated water outlet 29, and the interior pipe by deaerated water import 30, deaerated water cooler 4 is to deaerated water outlet 31, flow to feed pump and boosts and deliver to boiler (not having diagram).In this flow process, deaerated water is cooled to uniform temperature (about 80 ℃) by feedwater and the flushing water in the annular space between outer wall of inner tube and the outer tube wall (giving water-tight cavity and flushing water annular seal space).
Under the situation that described device need overhaul, water level is low excessively in flushing and the water-feeding oxygen-removal box 2, close self- shooter 38,39, open automatic and adjustable gate 36 and self-shooter 37, make flue gas pass through bypass smoke pipe 5 and discharge.
When in the pipe of the glass tube 24 in flushing feedwater heating cabinet 1 and the water-feeding oxygen-removal box 2 during dust stratification, flushing water from the flushing water annular seal space in flushing water import 42, the deaerated water cooler 4, flushing water outlet 43 is communicated with an end of glass tube 17 through conduit, and the water of breaking through in the glass tube 17 flows out through draining valve 57A or 57B.
When described thermal deoxygenizing apparatus overhauled or washes, feedwater was not by this device, and the straight pipe valve 41 that feeds water this moment is opened, and feed pump is directly delivered in feedwater.
When boiler capacity was big, the feedwater heating cabinet 1 of described device was two or more, and was communicated with series connection and form in parallel, reached thus and strengthened the purpose of exerting oneself.Other parts in this device are all with aforementioned.
As the original deoxygenation water tank in boiler room or when having the place that deoxygenation water tank (do not have diagram) is set, automatic drain valve 49 and 61(embodiment one) and automatic drain valve 33(embodiment two) can remove, the deaerated water that flows out passes to the deoxygenation water tank earlier, communicating pipe removes feed pump from its underpart to the boiler feedwater pump water inlet between female pipe again; Automatic and adjustable gate 52 and self- shooter 53,54,55(embodiment one) and automatic and adjustable gate 36 and self- shooter 37,38,39(embodiment two) not controlled by liquid levels, all be manual.Flush box can be established in the boiler room in addition, flushing water is often flowed (flushing water flow to flush box when not washing glass tube--absolute altitude is more than 20 meters) so that the deaerated water temperature drop is stable and can strengthen washing water quantity.And can improve the flushing water temperature.
Described thermal deoxygenizing apparatus can be used for steam boiler and hot-water boiler.
The embodiment of glass tube 24(described in the described thermal deoxygenizing apparatus one) and glass tube 17(embodiment two) can adopt Pyrex (homemade I type) or not have boron low-alkali glass (homemade II type) (also can adopt ward off, earthenware).When described device moved, the low glass tube tube wall temperature of the flue-gas temperature of passing through in the device was lower, nearly all below the acid dew-point temperature of flue gas, so tube wall is subjected to corrosiveness; But the decay resistance of glass (or porcelain) is very strong, so glass tube (or ward off, earthenware) can long-term work under such condition.
The material of described vibrationproof seal washer according to circumstances can adopt polytetrafluoroethylene (PTFE) (being higher than 130 ℃ locates), acrylonitrile-butadiene rubber or EP rubbers (being lower than 130 ℃ locates) and asbestos rubber.All metals that contacts with flue gas partly all should take the circumstances into consideration to carry out anticorrosive measure in this device.
Fig. 9 is the 3rd embodiment of the present utility model.The front smoke box flue 62 that is connected with boiler exhaust gas pipe 68 is provided with self-shooter 54 therebetween.Front smoke box flue 62 and front smoke box 6 are communicated with by flange.Front smoke box 6 is communicated with by flange with water-feeding oxygen-removal box 2 interior spaces, left tube sheet 8 left sides (structure is same as Fig. 3), is provided with seal washer between two adpting flanges.The rightward space of the dividing plate 9 of water-feeding oxygen-removal box 2 is connected with hollow cutting back 70 by flange.Left side tube sheet 8, dividing plate 9 are fixed with the inner wall sealing of water-feeding oxygen-removal box 2.By separately independently the glass tube tube bundle formed of many glass tubes 17 be communicated with left tube sheet 8 left sides and two spaces, dividing plate 9 right sides.Each cuvette holder is located on left tube sheet 8 and the dividing plate 9, and respectively setting up between the hole on the outer wall of each glass tube and left tube sheet 8 and the dividing plate 9 seals.Hollow cutting back 70 is connected with feedwater heating cabinet 1 by flange.Feedwater heating cabinet 1 right side is connected with back smoke box 7 by flange.Back smoke box 7 is communicated with back smoke box flue 63 by flange.Back smoke box flue 63 is communicated with rear portion smoke pipe 69 and is provided with self-shooter 55 therebetween.The structure of other structure of the water-feeding oxygen-removal box 2 in the present embodiment and deoxygenation gas collection head 3 all is same as the structure of embodiment two.The structure of the feedwater heating cabinet 1 in the present embodiment and be same as embodiment one with the syndeton of deoxygenation gas collection head 3, deaerated water cooler 4.Other structure all is same as embodiment one.Be pointed out that the steam input pipe that is loaded on vapor inlet port 25 places on the deoxygenation gas collection head 3 in the present embodiment can be adorned also and can not adorn.This is because in the present embodiment, under the situation of not importing steam, has been reached for the purpose of water heating deoxygenation.
In the present embodiment, the flue gas that boiler is discharged enters in each glass tube 17 in the water-feeding oxygen-removal box 2 by front smoke box 6, enters in the feedwater heating cabinet 1 by cutting back 70 again, and flue gas after each glass tube direction is laterally skimmed over relatively entered back smoke box 7 and discharged this moment.
From in the deaerated water cooler outer tube, the outer feedwater of interior pipe enters in each glass tube in the feedwater heating cabinet 1 by pipeline, enters deoxygenation gas collection head 3 by heated feedwater in the glass tube by pipeline 32.Other flue gas, current journey are same as embodiment two.
Figure 10 is the 4th embodiment of the present utility model.Front smoke box 6 is communicated with by the leftward space of flange with the dividing plate 9 of feedwater heating cabinet 1.Back smoke box 7 is communicated with by the rightward space of flange with the right tube sheet 12 of feedwater heating cabinet 1.The internal face sealing and fixing of the dividing plate 9 in the feedwater heating cabinet 1, right tube sheet 12 and the heating cabinet 1 that feeds water.The leftward space of dividing plate 9 is leaned on separately independently with the rightward space of right tube sheet 12, and the glass tube bundle of many glass tubes 17 is communicated with.Each cuvette holder is located on dividing plate 9, the right tube sheet 12, and the opening that sets up on support place of each glass tube outer wall and the dividing plate seals.Feedwater heating cabinet 1 is put on the shelf and is provided with water-feeding oxygen-removal box 2, and the structure and the connected mode of water-feeding oxygen-removal box 2, deoxygenation market-head 3, deaerated water cooler 4 are same as embodiment one.Other structure and the connected mode of feedwater heating cabinet 1 are same as embodiment two.
In the present embodiment, enter in each glass tube 17 in the feedwater heating cabinet 1 by front smoke box 6, then enter back smoke box 7 and discharge from the flue gas of boiler.
From in deaerated water cooler 4 outer tubes, the outer feedwater of interior pipe enters in the feedwater heating cabinet 1 by pipeline and via after each glass tube pipe outflow, enter deoxygenation gas collection head 3 by pipeline 32.Other flue gas, current journey are same as embodiment one.
Claims (10)
1, a kind of boiler thermal deoxygenizing apparatus comprises the front smoke box that is communicated with the boiler exhaust gas pipe; The back smoke box that is communicated with the rear portion smoke pipe; By pipeline is communicated with and directly is communicated with the feedwater heating cabinet with water-feeding oxygen-removal box and further heating be in the described feedwater of spraying in the state down to the deoxygenation gas collection head that discharges described feedwater bubbing; And the bypass smoke pipe that is provided with gate and described boiler exhaust gas pipe and rear portion smoke pipe are communicated with selectively, it is characterized in that described device also comprises the feedwater heating cabinet that utilizes the flue gas residual activity and be communicated with by at least one serial or parallel connection that glass tube heat-transfer surface heating boiler feeds water; Make described feedwater be heated to " boiling " and separate out the water-feeding oxygen-removal box of contained gas; Make described deaerated water and described feedwater and flushing water carry out the bushing type deaerated water cooler that heat exchange and outer, interior pipe are communicated with feedwater heating cabinet, water-feeding oxygen-removal box by pipeline respectively.
2, according to the described a kind of boiler thermal deoxygenizing apparatus of claim 1, the feedwater heating cabinet two ends that it is characterized in that described body structure are communicated with described front smoke box, back smoke box respectively, being distributed with in the described feedwater heating cabinet is orthogonal with the flow of flue gas direction flows into many glass tubes of described feedwater in the pipe of direction, the described feed-water intake of described glass tube is communicated with left front water tank bottom and is communicated with the described feedwater of deaerated water cooler thus, and the described water out of giving of described glass tube is communicated with left back water tank upper and is communicated with deoxygenation gas collection head thus; The described water-feeding oxygen-removal box that is positioned at described feedwater heating cabinet top and utilizes its top to be communicated with described deoxygenation gas collection head, the pipeline that described water-feeding oxygen-removal box is equipped with steam jet and is communicated with pipe in the described deaerated water cooler, the other end of pipe is provided with the pipeline that is communicated with boiler feed pump in the described deaerated water cooler; Be provided with the hydraulic flushing ash pipe.
3, according to the described a kind of boiler thermal deoxygenizing apparatus of claim 1, described feedwater heating cabinet one end that it is characterized in that body structure is provided with the described water-feeding oxygen-removal box that separates with it by seal diaphragm, the other end is provided with the right tube sheet of sealing, be distributed with in described feedwater heating cabinet and the described water-feeding oxygen-removal box with flow of flue gas direction pipe in the same way in flow through many glass tubes of described flue gas, described glass tube one end is communicated with described front smoke box, the other end is communicated with described back smoke box, and described feedwater heating cabinet lower right side and upper left side have water inlet that is communicated with described deaerated water cooler feedwater and the delivery port that is communicated with described deoxygenation gas collection head; The pipeline that the described water-feeding oxygen-removal box that utilizes the top to be communicated with described deoxygenation gas collection head is equipped with steam jet and is communicated with pipe in the described deaerated water cooler, the other end of pipe is provided with the pipeline that is communicated with boiler feed pump in the described deaerated water cooler; Be provided with the flushing water pipeline.
4, according to the described a kind of boiler thermal deoxygenizing apparatus of claim 1, feedwater heating cabinet one end that it is characterized in that described body structure is connected with described water-feeding oxygen-removal box by cutting back, the other end is communicated with described back smoke box, being distributed with in the described feedwater heating cabinet is orthogonal with the flow of flue gas direction flows into many glass tubes of described feedwater in the pipe of direction, the described feed-water intake of described glass tube is communicated with left front water tank bottom and is communicated with the described feedwater of deaerated water cooler thus, and the described water out of giving of described glass tube is communicated with left back water tank upper and is communicated with deoxygenation gas collection head thus; Keep left be distributed with in tube sheet and dividing plate the described water-feeding oxygen-removal box its sealing with flow of flue gas direction pipe in the same way in flow through many glass tubes of described flue gas, described glass tube one end is communicated with front smoke box, the other end is communicated with described feedwater heating cabinet, the pipeline that the described water-feeding oxygen-removal box that utilizes the top to be communicated with described deoxygenation gas collection head is equipped with steam jet and is communicated with pipe in the described deaerated water cooler, the other end of pipe is provided with the pipeline that is communicated with boiler feed pump in the described deaerated water cooler; Be provided with the flushing water pipeline.
5, according to the described a kind of boiler thermal deoxygenizing apparatus of claim 1, the described feedwater heating cabinet two ends that it is characterized in that body structure are by described dividing plate and described right tube sheet sealing, flow through many glass tubes of described flue gas in the described feedwater heating cabinet in distribution and the flow of flue gas direction pipe in the same way, described glass tube two ends are communicated with described forward and backward smoke box respectively, and described feedwater heating cabinet lower right side and upper left side have water inlet that is communicated with described deaerated water cooler feedwater and the delivery port that is communicated with described deoxygenation gas collection head; The described water-feeding oxygen-removal box that is positioned at described feedwater heating cabinet top and utilizes its top to be communicated with described deoxygenation gas collection head, the pipeline that described water-feeding oxygen-removal box is equipped with steam jet and is communicated with pipe in the described deaerated water cooler, the other end of pipe is provided with the pipeline that is communicated with boiler feed pump in the described deaerated water cooler; Be provided with flushing water water pipe and hydraulic flushing ash pipe.
6, according to the described a kind of boiler thermal deoxygenizing apparatus of claim 1～5, it is characterized in that the deaerated water cooler that constitutes by interior pipe and outer coaxial tube line suit, pipe and each end of outer tube are sealed respectively in described, be provided with in the annular space that described outer wall of inner tube and outer tube wall constitute described space be divided into dividing plate that at least one gives water-tight cavity, described to water-tight cavity be provided with at least one feed-water inlet that is communicated with feedwater and be communicated with described feedwater heating cabinet water inlet to water out; Described flushing water annular seal space is provided with the flushing water that at least one flushing water import that is communicated with flushing water and at least one be communicated with hydraulic flushing ash pipe in the described feedwater heating cabinet and exports; Export described water-feeding oxygen-removal box and the described interior aqueduct that is communicated with of managing by deaerated water import and deaerated water; Be communicated with and deaerated water delivered to the deaerated water outlet of feed pump with interior pipe.
7, according to the described a kind of boiler thermal deoxygenizing apparatus of claim 1～5, the material that it is characterized in that described each pipe of glass tube tube bundle can adopt Pyrex or do not have boron low-alkali glass also can adopt ward off, pottery; The material of described vibrationproof seal washer according to circumstances can adopt polytetrafluoroethylene (PTFE) (being higher than 130 ℃ locates), butyronitrile rubber or EP rubbers (being lower than 130 ℃ locates) and asbestos rubber.
8, according to claim 1,2,4 described a kind of boiler thermal deoxygenizing apparatus, it is characterized in that being provided with shell in the described feedwater heating cabinet and fixedly connected, and have a plurality of respective through hole left tube sheet, vertical clapboard, right tube sheet, pass a plurality of respective through hole on the described plate and extend to the tube bundle that many glass pipes that the interval arranged side by side of right tube sheet is provided with constitute by left tube sheet parallel lines, be provided with the vibrationproof seal washer between described glass tube and described respective through hole; With described glass tube at interval and the hydraulic flushing ash pipe that be arranged in parallel.
9, according to claim 1,3 described a kind of boiler thermal deoxygenizing apparatus, it is characterized in that all having a plurality of corresponding through holes on left tube sheet fixedly connected in the described feedwater heating cabinet shell, dividing plate, segmental baffle, the right tube sheet, pass a plurality of respective through hole and extend to the many glass tube tube bundles that the interval arranged side by side of right tube sheet is provided with, be provided with the vibrationproof seal washer between described glass tube and described respective through hole by left tube sheet parallel lines.
10, according to claim 1,5 described a kind of boiler thermal deoxygenizing apparatus, it is characterized in that all having a plurality of corresponding through holes on dividing plate fixedly connected in the described feedwater heating cabinet shell, segmental baffle, the right tube sheet, pass a plurality of respective through hole and extend to the many glass tube tube bundles that the interval arranged side by side of right tube sheet is provided with, be provided with the vibrationproof seal washer between described glass tube and described respective through hole by the dividing plate parallel lines.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93200385 CN2167270Y (en) | 1993-01-14 | 1993-01-14 | Heat oxygen removing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93200385 CN2167270Y (en) | 1993-01-14 | 1993-01-14 | Heat oxygen removing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2167270Y true CN2167270Y (en) | 1994-06-01 |
Family
ID=33785165
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93200385 Expired - Fee Related CN2167270Y (en) | 1993-01-14 | 1993-01-14 | Heat oxygen removing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2167270Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104033608A (en) * | 2014-06-27 | 2014-09-10 | 杨海蓉 | Polytetrafluoroethylene welding sandwich gasket |
| CN116734474A (en) * | 2023-08-11 | 2023-09-12 | 福建蓝海节能科技有限公司 | Water boiler of water supply deoxidizing device |
-
1993
- 1993-01-14 CN CN 93200385 patent/CN2167270Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104033608A (en) * | 2014-06-27 | 2014-09-10 | 杨海蓉 | Polytetrafluoroethylene welding sandwich gasket |
| CN116734474A (en) * | 2023-08-11 | 2023-09-12 | 福建蓝海节能科技有限公司 | Water boiler of water supply deoxidizing device |
| CN116734474B (en) * | 2023-08-11 | 2023-10-31 | 福建蓝海节能科技有限公司 | Water boiler of water supply deoxidizing device |
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