CN103395861A - Accurate processing apparatus for large-flow medium-pressure condensation water - Google Patents
Accurate processing apparatus for large-flow medium-pressure condensation water Download PDFInfo
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- CN103395861A CN103395861A CN2013103668299A CN201310366829A CN103395861A CN 103395861 A CN103395861 A CN 103395861A CN 2013103668299 A CN2013103668299 A CN 2013103668299A CN 201310366829 A CN201310366829 A CN 201310366829A CN 103395861 A CN103395861 A CN 103395861A
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- water
- orifice plate
- lower cover
- end socket
- water outlet
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Abstract
The invention relates to an accurate processing apparatus for large-flow medium-pressure condensation water, and belongs to a metal multilayer-material medium-pressure exchanger. The accurate processing apparatus is formed by a cylinder, an upper end socket and a lower end socket; the upper end socket is fixedly disposed at the upper end of the cylinder, and the lower end socket is fixedly disposed at the lower end of the cylinder; the inner walls of the cylinder, the upper end socket and the lower end socket are respectively coated by a cylinder stainless protection layer, an upper-end-socket stainless protection layer and a lower-end-socket stainless protection layer; the upper end socket of the cylinder of the apparatus is fixedly provided with an inlet-chamber water-distributing orifice plate; the lower end socket is fixedly provided with a water outlet orifice plate; the upper end socket is provided with a condensate water inlet and a resin input opening; the resin input opening penetrates the inlet-chamber water-distributing orifice plate and is disposed in a processing chamber; in the processing chamber a resin bed layer is disposed on the water outlet orifice plate; the water outlet orifice plate is provided with a resin outlet opening penetrating the lower end socket; and the lower end socket is provided with a condensate water outlet. The inner layer of the apparatus is made of austenitic stainless steel, the internal of the exchanger has anticorrosion performance integrally, and the possibility of SO4<2-> leakage from the anticorrosive layer is eradicated fundamentally.
Description
Technical field
The invention belongs in a kind of Metal coating material and press interchanger, particularly relate in a kind of large flow that adopts the Metal coating material and press condensed water precision treatment device, be applicable to the application to the precision processing of large flow (separate unit rated flow>800 cube m/h) condensed water of nuclear power plant conventional island condensed water precision processing system and thermoelectricity ultra supercritical condensed water precision processing system.
Background technology
The main operational outfit of condensed water precision processing system: the equipment tradition such as preposition cation bed interchanger, high flow rate mixed bed interchanger and resin catcher are all to adopt the manufacturing process of steel lining glue, in view of the strict control of nuclear power to the secondary circuit water-quality guideline, therefore the using adaptability of vulcanized rubber line with rubber technique proposed to query, and caused concern widely.Along with the development of nuclear power technology, unit has larger generating capacity, and the conventional island secondary coolant circuit system not only increases need condensing water flow to be processed, and to using the water quality requirement after precision processing device of condensation water is processed more strict; For thermal power plant, the large-capacity ultra-supercritical unit is to using the water quality after precision processing device of condensation water is processed also to seem that requirements at the higher level are arranged.Particularly to rodent negatively charged ion SO is arranged in condensed water
4 2-, Cl
-, NO
3 -The requirement of equal size has caused concern.
Although temperature, the pressure and other parameters of nuclear power secondary circuit water-steam system, still compare much lower to overcritical thermal power generation unit with ultra supercritical; Because vapour generator uses the characteristic of metallic substance, determine, the tubing of vapour generator will be taken into account the working conditions of a circuit cools liquid and secondary circuit de-mineralized water, adopted a kind of expensive nickel-base alloy, and this nickel-base alloy is to SO contained in water
4 2-, Cl
-Ion is very responsive.Vapour generator secondary circuit water side is under the vapour generator operating pressure, and some salts are but very low at the partition ratio of saturation steam, as NaCl, Na
2SO
4Deng salt, they are constantly concentrated in water along with evaporation; Particularly in the gap between vaporizer pipe and back up pad or hoop plate, the salt in water can reach tens times concentrating, and the high concentration ion in these concentrated solutions, can make the pipe of vapour generator be subject to serious corrosion; This is can significantly reduce the resistance to corrosion of Langaloy owing to being present in sulfur component in high-temperature water, and heat-transfer pipe of evaporator is produced along the intergranular corrosion between crystal boundary.This corrosion can make the mechanicalness of metal significantly reduce, and hazardness is very big.
Steam in this external nuclear power secondary circuit separates resuperheater, the wetting vapour that enters the resuperheater saliferous, and because temperature rising humidity descends, salt obtains the concentrated degree that can reach danger, to reheater tube, can produce corrosion.So the Water Vapor Quality quality that nuclear power secondary circuit boiler circuit is controlled is but more strict than the thermal power generation unit Water Vapor Quality of ultra supercritical.So SO
4 2-, Cl
-Content, have the control criterion of regulation in compressed water reactor nuclear power secondary circuit water-steam system.Especially condensate fine is processed to mixed bed water outlet SO
4 2-Ionic concn is controlled quite strict, and expected value is less than 0.2 μ g/kg.
Ultra supercritical unit water-steam system, heating surface temperature are all very high, and the deposition of chemical substance easily occurs, and these are mainly Na
2SO
4, NaOH, this class substance dissolves, in steam, produces corrosion to superheater, reheater and steam turbine.
The generation of above-mentioned situation is all because releasing of condensate fine processing mixed bed water outlet sulphur compound (inorganic sulfide compound and organosulfur compound) caused SO in steam/water circulating
4 2-Too high levels, its reason comes from the following aspects: the leachable of positive resin; Releasing of condensed water precision processing system sun resin leachable is mainly releasing of high molecular component; Mixed bed interchanger positive and negative resin does not thoroughly mix, and the positive resin in bed bottom is in the majority, and its leachable directly enters condensate system; Preposition cation bed sun resin working conditions is severe, positive resin accelerated oxidation price reduction, and leachable increases and passes mixed bed and enter condensate system; Negative resin chemical exchange power scholarship and moral conduct degradation in mixed bed, the speed decline to anionresin, cause and include SO
4 2-, Cl
-Plasma increases with the leakage that comprises low molecular positive resin leachable; The broken resin of condensed water precision processing system spills, and enters the secondary circuit water gas system, and broken resin decomposes in vapour generator discharges SO
4 2-.
At present, at preposition cation bed interchanger and high flow rate mixed bed interchanger, tank interior adopts line with rubber anticorrosion, in order to improve the performance of line with rubber layer, to carry out a series of refinings and the course of processing to untreated rubber,, make rubber in sizing material and vulcanizing agent, promotor, various additive generation chemical reaction under certain condition, make its macromolecules cross-linking by linear structure become the macromole of tridimensional network, thereby make sizing material possess high strength, snappiness, high abrasion, anticorrosive etc. premium properties.Whole this process is called the vulcanization of rubber.Promotor and additive that these remain in vulcanizing agent, some sulfur-bearings or sulfate ion in the line with rubber preservative coat, can discharge, and finally become SO under the condition with condensed water contacts
4 2-Ion enters conventional island secondary circuit boiler circuit thereupon.Traditional equipment line with rubber technique in addition, due to the existing problem of rubber self character, after using certain time limit, the line with rubber layer can occur can be aging, lost its antiseptic property, tank body equipment must advance out of service, periodically to multiple lining and the replacing again of line with rubber layer, this is the weakness of line with rubber anticorrosion process.
Summary of the invention
The present invention is intended to overcome the deficiencies in the prior art, provides in a kind of large flow that adopts the Metal coating material and has pressed condensed water precision treatment device, is to improve nuclear power conventional island condensate fine water quality treatment, reduces the SO in the water of secondary circuit
4 2-Ion content, the slave unit manufacture is set about, and reforms the anticorrosion means of traditional equipment tank interior, has proposed preposition cation bed interchanger, high flow rate mixed bed interchanger tank body are adopted the novel process of Metal coating material antiseptic here.
in a kind of large flow that adopts the Metal coating material of the present invention, press precision processing device of condensation water, by cylindrical shell, upper cover and lower cover form, upper cover has been fixed in upper end at cylindrical shell, lower cover has been fixed in lower end, wherein, at cylindrical shell, the inwall of upper cover and lower cover has pasted respectively the cylindrical shell stainless protection layer, upper cover stainless protection layer and lower cover stainless protection layer, upper cover at the device inner barrel has been fixed intake chamber water distribution orifice plate, lower cover has been fixed the water outlet orifice plate, on upper cover, be provided with condensed water import and resin input aperture, the resin input aperture is passed intake chamber water distribution orifice plate and is placed in treatment chamber, in treatment chamber, there is resin bed to be placed on the water outlet orifice plate, the water outlet orifice plate is provided with the resin delivery port and passes lower cover, on lower cover, be provided with the condensed water outlet.
As a further improvement on the present invention, described water outlet orifice plate is sphere, and its below is provided with rises vertical support circle and oval supporting surface, rises vertical support circle and oval supporting surface, rise vertical support circle and oval supporting surface and jointly forms captation.
As a further improvement on the present invention, the inwall at lower cover is provided with the pressure equilibrium chamber.
As a further improvement on the present invention, its top of pressure equalizing chamber joins with the captation that adopts stainless material, the lower cover stainless protection layer of its underpart and lower cover joins.
As a further improvement on the present invention, on cylindrical shell, be provided with manhole.
As a further improvement on the present invention, described water distribution orifice plate is that stainless material is made.
In a kind of large flow that adopts the Metal coating material of the present invention, press condensed water precision treatment device, adopt new coat of metal for the condensate fine treatment exchanger, fundamentally solved sulfate radical separate out problem and interchanger line with rubber layer work-ing life short two large problems, further promoted security, reliability and the economy of nuclear power condensed water precision treatment device; Adopt the technique of new Metal coating material, also solved the nuclear power condensate fine is processed to preposition cation bed and high flow rate mixed bed tandem process system, the matrix metal rot-resistant problem of its high flow rate mixed bed bottom pressure balance chamber of adopting; Balance liquid can directly be quoted high flow rate mixed bed water inlet, i.e. the low pH water outlet of preposition cation bed, thus improved the safety and reliability of high flow rate mixed bed operation.For thermal power plant's condensed water precision treatment device of large capacity, high-parameters, adopt new Metal coating material technology, eliminated the stripping of sulfate ion, to the therrmodynamic system Water Vapor Quality, be also one and effectively improve.Particularly, it is compared with existing equipment, except the superperformance that keeps existing equipment, has also fundamentally reformed the inner line with rubber rot-resistant traditional technology that adopts of condensate fine treatment exchanger.Operation for the nuclear power condensed water precision processing system has great meaning especially, is that conventional island secondary circuit water-steam system prevents the radical corrosion effective measure.
The accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, below will the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is structural representation of the present invention.
Label declaration: upper cover 1, upper cover stainless protection layer 2, cylindrical shell 3, cylindrical shell stainless protection layer 4, lower cover 5, lower cover stainless protection layer 6, water outlet orifice plate 9, water hole plate 10, resin bed 11, captation 12, pressure equalizing chamber 13, condensed water outlet 14, manhole 15, resin delivery port 16, treatment chamber 17.
Embodiment
The present invention is described in further detail below in conjunction with embodiment, and following examples are explanation of the invention and the present invention is not limited to following examples.
In a kind of large flow that adopts the Metal coating material of the present invention, pressing condensed water precision treatment device, is to consist of cylindrical shell 3, upper cover 1 and lower cover 5, in the upper end of cylindrical shell 3, has fixed upper cover 1, lower cover 5 has been fixed in lower end, on cylindrical shell 3, is provided with manhole 15.
Wherein, at cylindrical shell 3, upper cover 1 and lower cover 5 inwalls, cylindrical shell stainless protection layer 4, upper cover stainless protection layer 2 and lower cover stainless protection layer 6 have been pasted respectively; its the inner preservative coat of tank body that adopts the Metal coating material to manufacture is very complete; comprise that upper and lower end socket and straight tube inwall all are under the protection of austenitic stainless steel preservative coat; the austenitic stainless steel preservative coat is tight with engaging of tank body matrix, and the tank interior matrix is without exposing.Internal layer is that austenitic stainless steel is anticorrosion, on duration of service, is not placed restrictions on, and fully can keep synchronizeing working life with the tank body matrix, for the user provides more reliable usage degree.
Water outlet orifice plate 9 has been fixed in the upper end that intake chamber water distribution orifice plate 10, lower cover 5 have been fixed in the lower end of upper cover 1 in the device, on upper cover 1, be provided with condensed water import 7 and resin input aperture 8, resin input aperture 8 is passed intake chamber water distribution orifice plate 10 and is placed in treatment chamber 17, in treatment chamber 17, there is resin bed 11 to be placed on water outlet orifice plate 9, water outlet orifice plate 9 is provided with resin delivery port 16 and passes lower cover 5, on lower cover 5, is provided with condensed water outlet 14.
Water outlet orifice plate 9 is sphere, and rise vertical support circle and oval supporting surface with its below, form captation 12 jointly; Water distribution orifice plate 10 is made for stainless material.In this device, interchanger water inlet pipe and flange thereof also adopt same process anticorrosion, and keep the complete of junction surface.
Inwall at lower cover 5 is provided with pressure equilibrium chamber 13.Pressure equalizing chamber 13 its tops join with the captation 12 that adopts stainless material, the lower cover stainless protection layer 6 of its underpart and lower cover 5 joins; the all steel of having realized whole chamber is anticorrosion, and the indoor balance liquid of pressure balance chamber and basic material are isolated fully.The water that is specially adapted to after preposition cation bed is processed enters the pressure equilibrium chamber, need not worry the corrosion of the balance liquid of low pH to matrix metal.
This device has been casted away and at condensate fine, has been processed tank interior and the tank wall more than orifice plate of catchmenting is carried out to traditional anticorrosion process (catchmenting below orifice plate and do not having preservative coat to process) of local line with rubber; But adopt its internal layer of Metal coating material, be austenitic stainless steel, with coming of new technique, make and on the interchanger inner body, accomplish anticorrosionly, can fundamentally stop from preservative coat, leaking out SO
4 2-The possibility of ion, the water quality that condensate fine is processed further is improved; The equipment that has embodied the processing of nuclear power condensate fine has the substance of an integral body to promote on Design and manufacture technique.
In addition, it should be noted that, the specific embodiment described in this specification sheets, the shape of its parts and components, institute's title of being named etc. can be different.All equivalence or simple change of doing according to the described structure of patent design of the present invention, feature and principle, be included in the protection domain of patent of the present invention.Those skilled in the art can make various modifications or supplement or adopt similar mode to substitute described specific embodiment; only otherwise depart from structure of the present invention or surmount this scope as defined in the claims, all should belong to protection scope of the present invention.
Claims (6)
1. in a large flow, press precision processing device of condensation water, by cylindrical shell (3), upper cover (1) and lower cover (5) form, in the upper end of cylindrical shell (3), fixed upper cover (1), lower cover (5) has been fixed in lower end, it is characterized in that in cylindrical shell (3), the inwall of upper cover (1) and lower cover (5) has pasted respectively cylindrical shell stainless protection layer (4), upper cover stainless protection layer (2) and lower cover stainless protection layer (6), upper cover at device inner barrel (3) has been fixed intake chamber water distribution orifice plate (10), lower cover has been fixed water outlet orifice plate (9), on upper cover (1), be provided with condensed water import (7) and resin input aperture (8), resin input aperture (8) is passed intake chamber water distribution orifice plate (10) and is placed in treatment chamber (17), in treatment chamber (17), there is resin bed (11) to be placed on water outlet orifice plate (9), water outlet orifice plate (9) is provided with resin delivery port (16) and passes lower cover (5), on lower cover (5), be provided with condensed water outlet (14).
2. in a kind of large flow as claimed in claim 1, press precision processing device of condensation water, it is characterized in that described water outlet orifice plate (9) is circular arc, its below is provided with captation (12).
3. in a kind of large flow as claimed in claim 2, press precision processing device of condensation water, it is characterized in that: the inwall at lower cover (5) is provided with pressure equilibrium chamber (13).
4. in a kind of large flow as claimed in claim 3, press precision processing device of condensation water, it is characterized in that: its top of pressure equalizing chamber (13) joins with the captation (12) that adopts stainless material, the lower cover stainless protection layer (6) of its underpart and lower cover (5) joins.
5. in a kind of large flow as claimed in claim 1, press precision processing device of condensation water, it is characterized in that: on cylindrical shell (3), be provided with manhole (15).
6. in a kind of large flow as claimed in claim 1, press precision processing device of condensation water, it is characterized in that: water distribution orifice plate (10) is made for stainless material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013103668299A CN103395861A (en) | 2013-08-22 | 2013-08-22 | Accurate processing apparatus for large-flow medium-pressure condensation water |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013103668299A CN103395861A (en) | 2013-08-22 | 2013-08-22 | Accurate processing apparatus for large-flow medium-pressure condensation water |
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| Publication Number | Publication Date |
|---|---|
| CN103395861A true CN103395861A (en) | 2013-11-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013103668299A Pending CN103395861A (en) | 2013-08-22 | 2013-08-22 | Accurate processing apparatus for large-flow medium-pressure condensation water |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201037120Y (en) * | 2007-04-13 | 2008-03-19 | 中国大唐集团科技工程有限公司 | Condensation water refined processing high-speed mixing bed |
| CN203402942U (en) * | 2013-08-22 | 2014-01-22 | 海盐力源电力设备有限公司 | High-flow medium-pressure condensate polishing device |
-
2013
- 2013-08-22 CN CN2013103668299A patent/CN103395861A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201037120Y (en) * | 2007-04-13 | 2008-03-19 | 中国大唐集团科技工程有限公司 | Condensation water refined processing high-speed mixing bed |
| CN203402942U (en) * | 2013-08-22 | 2014-01-22 | 海盐力源电力设备有限公司 | High-flow medium-pressure condensate polishing device |
Non-Patent Citations (1)
| Title |
|---|
| 杨双春等: "管道内防腐技术研究进展", 《当代化工》, vol. 41, no. 11, 30 November 2012 (2012-11-30), pages 1242 - 1244 * |
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Application publication date: 20131120 |