CN203946910U - Secondary deaerating type of cycles is reclaimed in the exhaust steam of water of condensation de-mineralized water indirect heat exchange - Google Patents
Secondary deaerating type of cycles is reclaimed in the exhaust steam of water of condensation de-mineralized water indirect heat exchange Download PDFInfo
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- CN203946910U CN203946910U CN201420313462.4U CN201420313462U CN203946910U CN 203946910 U CN203946910 U CN 203946910U CN 201420313462 U CN201420313462 U CN 201420313462U CN 203946910 U CN203946910 U CN 203946910U
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Abstract
The utility model relates to a kind of water of condensation de-mineralized water indirect heat exchange exhaust steam and reclaims secondary deaerating type of cycles, pressure-bearing surge tank be provided be positioned at first and third water inlet pipe on upper strata and be positioned at lower floor second, four water inlet pipes; Mixing condensation water respectively by accessing respectively second after third and fourth interchanger and synthetic ammonia de-mineralized water, conversion de-mineralized water indirect heat exchange, four water inlet pipes, synthetic ammonia de-mineralized water and conversion de-mineralized water access respectively first and third water inlet pipe after by third and fourth interchanger heat exchange; Surge tank exhaust steam enters First Heat Exchanger and is cooled into as surge tank exhaust steam water of condensation fills into pressure-bearing surge tank through condensation water collection tank and the second water pump, non-condensable gases discharge simultaneously; Surge tank water outlet is sent into higher-pressure deaerator by the first water pump, and deoxygenation case water shoot is through the 3rd water pump access boiler replenishing water pipe, and pressure-bearing surge tank base plate is connected with blow-off pipe.This device condensation water residual heat utilization ratio is high and reliable.
Description
Technical field
The utility model relates to a kind of water of condensation de-mineralized water indirect heat exchange exhaust steam and reclaims secondary deaerating type of cycles, can be used for the recovery of the high-temperature condensation water of alkali factory production line generation and the de-mineralized water through heating.
Background technology
For preventing heat power equipment and corrosive pipeline thereof, and prevent non-condensable gases from sneaking into steam and reduce steam quality, must remove the dissolved oxygen and other non-condensable gases that are dissolved in boiler replenishing water, often realizing by deoxygenator.According to Henry's law and Dalton's law, for the various gases that are dissolved in the water, under certain pressure, the temperature of water is higher, and solubleness is lower; Or under certain pressure, the pressure component of gas is lower, and the solubleness of this gas is lower.Thermal de-aeration is exactly when boiler replenishing water is heated to the temperature of saturation under corresponding pressure, vapor partial pressure power will be close to total pressure on the water surface, the pressure component of various gases soluble in water is close to zero, therefore, water does not just have the ability of gas dissolved, gas soluble in water is just precipitated, thereby removes oxygen and other gases in water.Thermal deaerator comprises deoxygenation head and deoxygenation case, deoxygenation head is positioned at deoxygenation upper box part, the side wall upper part of deoxygenation head is connected with a deoxygenation water inlet pipe, the lower sidewall of deoxygenation head is connected with deoxygenation vapour pipe, the top of deoxygenation head is connected with a deoxygenation steam discharge pipe, and the bottom of deoxygenation case is connected with deoxygenation case water shoot.
In alkali factory production line, because a large amount of steam that uses can produce a lot of water of condensation, as calcining furnace water of condensation, fluidized-bed water of condensation and dry ammonium water of condensation etc., the temperature of water of condensation after flash distillation utilization still has 135 DEG C ~ 155 DEG C.In addition, synthetic ammonia and shift conversion step can use a large amount of de-mineralized waters as indirect cooling water, approximately 60 DEG C ~ 80 DEG C of the temperature of the synthetic ammonia cooling and desalting water after heating, approximately 60 DEG C ~ 95 DEG C of the temperature of the conversion cooling and desalting water through heating.Because of the water of condensation and the temperature of cooling and desalting water that produce higher, water quality meets again the requirement of boiler replenishing water, Ge Jian factory is often recycled to above steam condensate and cooling and desalting water in the deoxygenation case of atmospheric type deaerator, then delivers to boiler as boiler replenishing water by deoxygenation case by water pump.
There is following weak point in above way of recycling: 1. deoxygenator is air suspended type, approximately 104 DEG C of working temperatures, and the mixed actual temperature of water of condensation and de-mineralized water is considerably beyond 104 DEG C, therefore a large amount of kitings of flash tank that excess portion can only be communicated with by deoxygenation head with deoxygenator, waste a large amount of residual heat resources and water resources.2. water of condensation and the de-mineralized water temperature difference are large, and by direct contact heat transfer, heat is difficult to reach balance in moment, therefore easily produce thermal explosion in deoxygenation case, affect equipment safety operation.3. there is contradiction in the continuity that the intermittence of boiler replenishing water and water of condensation produce: when not moisturizing of boiler or rate of water make-up are when little, the valve opening that calcining furnace water of condensation enters deoxygenator is less, and system builds the pressure, and calcining fire grate water of condensation is not smooth; In the time of a large amount of moisturizing of boiler, the valve opening that calcining furnace water of condensation enters deoxygenator is large, and system back pressure reduces, and calcining furnace steam string, to deoxygenator, aggravates the discharge of waste heat.4. deoxygenation case volume is limited, can not between boiler unit and productive unit, form effectively buffering.
Utility model content
The purpose of this utility model is, overcome problems of the prior art, provide a kind of water of condensation de-mineralized water indirect heat exchange exhaust steam to reclaim secondary deaerating type of cycles, condensation water residual heat utilization ratio is high and can guarantee that the fluctuation of boiler replenishing water does not affect the normal operation with vapour unit.
For solving above technical problem, secondary deaerating type of cycles is reclaimed in a kind of water of condensation de-mineralized water indirect heat exchange exhaust steam of the present utility model, calcining furnace water of condensation, fluidized-bed water of condensation and dry ammonium water of condensation enter respectively calcining furnace condensate pipe, fluidized-bed condensate pipe and dry ammonium condensate pipe, synthetic ammonia cooling and desalting water enters synthetic ammonia desalination water pipe, and conversion cooling and desalting water enters conversion desalination water pipe, described calcining furnace condensate pipe, fluidized-bed condensate pipe and dry ammonium condensate pipe access respectively water of condensation header, also comprise the 3rd interchanger, the pressure-bearing surge tank of the 4th interchanger and sealing, on the circumference of described pressure-bearing surge tank, be vertically connected with the first water inlet pipe, the second water inlet pipe, the 3rd water inlet pipe and the 4th water inlet pipe, in the relative and short transverse of the mouth of pipe of described the first water inlet pipe and the 3rd water inlet pipe, mutually stagger, in the relative and short transverse of the mouth of pipe of described the second water inlet pipe and the 4th water inlet pipe, mutually stagger, the height of described the first water inlet pipe and the 3rd water inlet pipe is higher than described the second water inlet pipe and the 4th water inlet pipe, the outlet of described water of condensation header is connected with the 3rd interchanger mixing condensation water inlet of described the 3rd interchanger and the 4th interchanger mixing condensation water inlet of the 4th interchanger respectively, the 3rd interchanger mixing condensation water out of described the 3rd interchanger is connected with described the second water inlet pipe, and the 4th interchanger mixing condensation water out of described the 4th interchanger is connected with described the 4th water inlet pipe, described synthetic ammonia desalination water pipe is connected with the 3rd interchanger synthetic ammonia de-mineralized water import of described the 3rd interchanger, the 3rd interchanger synthetic ammonia de-mineralized water outlet of described the 3rd interchanger is connected with described the first water inlet pipe, described conversion desalination water pipe is connected with the 4th interchanger conversion de-mineralized water import, and the 4th interchanger conversion de-mineralized water outlet of described the 4th interchanger is connected with described the 3rd water inlet pipe, the roof middle part of described pressure-bearing surge tank is connected with surge tank steam discharge pipe, and reverse checkvalve and the first control valve are installed on described surge tank steam discharge pipe from lower to upper successively, the outlet of described the first control valve is connected with the First Heat Exchanger surge tank exhaust steam import of First Heat Exchanger, the First Heat Exchanger surge tank exhaust steam condensation-water drain of described First Heat Exchanger is connected with the surge tank exhaust steam water of condensation water inlet pipe of condensation water collection tank, the condensation water collection tank rising pipe of described condensation water collection tank is connected with the entrance of the second water pump, and the outlet pipe of described the second water pump accesses in described pressure-bearing surge tank, the First Heat Exchanger circulating cooling water inlet of described First Heat Exchanger and First Heat Exchanger circulating cooling water out connect and compose circulation with outside circulating cooling water pipe respectively, the 3rd control valve is installed on the inlet duct of First Heat Exchanger circulating cooling water inlet, the first non-condensable gases delivery pipe stretching out is straight up installed on the outlet pipe of First Heat Exchanger surge tank exhaust steam condensation-water drain, in described pressure-bearing surge tank, be provided with the surge tank rising pipe of opening upwards, the lower end of described surge tank rising pipe is connected with the entrance of the first water pump through the base plate of pressure-bearing surge tank, described the first water pump outlet is through a deoxygenation water inlet pipe of the 5th control valve access higher-pressure deaerator, the entrance of deoxygenation case water shoot access the 3rd water pump of described higher-pressure deaerator, described the 3rd water pump outlet access boiler replenishing water pipe, external steam is by the 4th control valve access deoxygenation vapour pipe, the deoxygenation crown portion of described higher-pressure deaerator is connected with a deoxygenation steam discharge pipe of discharge deoxygenation exhaust steam and non-condensable gases, the base plate of described pressure-bearing surge tank is provided with sewage draining exit, and described sewage draining exit is connected with blow-off pipe, and the second control valve is installed on described blow-off pipe.
With respect to prior art, the utility model has been obtained following beneficial effect: (1) first calcining furnace water of condensation, fluidized-bed water of condensation and dry ammonium water of condensation enter water of condensation header becomes mixing condensation water, mixing condensation water, synthetic ammonia cooling and desalting water and conversion cooling and desalting water enter respectively in pressure-bearing surge tank, after mixing, discharge from surge tank rising pipe, send into higher-pressure deaerator by the first water pump and carry out deep deoxygenization, to meet the requirement of high-duty boiler to oxygen level; The non-condensable gasess such as the oxygen overflowing in a deoxygenation deoxygenation exhaust steam that steam mixing produces and water are discharged from a deoxygenation steam discharge pipe of deoxygenation crown portion.Pressure-bearing surge tank can bearing certain pressure and water level can in a big way, adjust, can make up the contradiction between the intermittence of boiler replenishing water and the continuity of water of condensation generation, between by vapour unit and boiler replenishing water system, form isolation and buffering, the fluctuation of guaranteeing boiler replenishing water does not affect the normal operation with vapour unit, avoid when boiler replenishing water amount hour, water of condensation pipe network back pressure is high, and calcining furnace, fluidized-bed and dry ammonium system occur that the row's of building the pressure water of condensation is not smooth; Also avoided in the time of a large amount of moisturizing of boiler, water of condensation pipe network back pressure is low, and the steam string of calcining furnace and fluidised bed system, to deoxygenator, aggravates the discharge of waste heat.(3) the temperature of synthetic ammonia cooling and desalting water and conversion cooling and desalting water is slightly low and contain the non-condensable gasess such as oxygen, the non-condensable gasess such as the high and oxygen-free gas of mixing condensation water temp, temperature rise after synthetic ammonia cooling and desalting water, conversion cooling and desalting water and mixing condensation water are mixed, and pressure-bearing surge tank operating pressure is saturation pressure corresponding to pressure-bearing surge tank mixing water temperature, the pressure component of oxygen and other non-condensable gases is close to zero, solubleness is close to zero, after overflowing the pressure-bearing surge tank water surface, discharge from surge tank steam discharge pipe with surge tank exhaust steam, realize one-level deoxygenation; Sent into a deoxygenation water inlet pipe of higher-pressure deaerator through the first water pump and the 5th control valve by the discharge of surge tank rising pipe through the water of one-level deoxygenation, external steam enters deoxygenation head to carrying out secondary deoxygenation from deoxygenation vapour pipe and the 4th control valve, a deoxygenation steam mixes the non-condensable gases such as deoxygenation exhaust steam and oxygen producing discharges from a deoxygenation steam discharge pipe, sends into boiler as boiler replenishing water through the water of secondary deoxygenation by the 3rd water pump.(4) the reverse checkvalve on surge tank steam discharge pipe can guarantee that atmosphere can not pour in down a chimney to pressure-bearing surge tank, prevents from introducing extraneous oxygen.(5) the first control valve, by controlling the quantity discharged of surge tank exhaust steam, makes to maintain certain pressure in pressure-bearing surge tank, to fully receive the heat of water of condensation and de-mineralized water, reduces the loss of surge tank exhaust steam discharge and heat, not only energy-conservation but also environmental protection.(6) improve boiler replenishing water temperature, reduced unit steam coal consumption.(7) the synthetic ammonia cooling and desalting water that temperature is relatively low, density is higher and conversion cooling and desalting water first water inlet pipe and three water inlet pipe higher from position enter, the second water inlet pipe that the mixing condensation water that temperature is relatively high, density is lower is lower from position and the 4th water inlet pipe enter pressure-bearing surge tank, can in pressure-bearing surge tank, form natural convection, promote abundant heat exchange.(8) along with the increase of working hour, certain impurity can be gathered in pressure-bearing surge tank bottom, and water quality can decline, and now can open the second control valve, discharges the water of water quality variation from blow-off pipe, guarantees boiler replenishing water water quality.(9) the calcining furnace water of condensation of 135 DEG C ~ 155 DEG C, the dry ammonium water of condensation of the fluidized-bed water of condensation of 135 DEG C ~ 155 DEG C and 135 DEG C ~ 155 DEG C enters first respectively water of condensation header to be mixed, mixing condensation water enters respectively the 3rd interchanger and the 4th interchanger and the synthetic ammonia de-mineralized water of 60 DEG C ~ 80 DEG C and the conversion de-mineralized water of 60 DEG C ~ 95 DEG C again and carries out indirect heat exchange, the temperature of mixing condensation water reduces, the temperature of synthetic ammonia de-mineralized water and conversion de-mineralized water raises, dwindle the temperature difference of mixing condensation water and de-mineralized water, make the temperature field in pressure-bearing surge tank more even, avoid the generation of thermal explosion, (10) the surge tank exhaust steam of pressure-bearing surge tank discharge enters First Heat Exchanger and is recycled water coolant and is condensed into surge tank exhaust steam water of condensation after indirectly cooling and enters in condensation water collection tank, fill into pressure-bearing surge tank by the second water pump, reclaimed entrained most of water and the part heat of surge tank exhaust steam.(11) after surge tank exhaust steam condensation, the non-condensable gasess such as the oxygen of discharging with surge tank exhaust steam are still gaseous state, discharge from the first non-condensable gases delivery pipe; Non-condensable gases density is little, and the first non-condensable gases delivery pipe stretches out the discharge that is beneficial to non-condensable gases straight up.
As preferred version of the present utility model, the mouth of pipe that described the first water inlet pipe, the second water inlet pipe, the 3rd water inlet pipe and the 4th water inlet pipe are positioned at pressure-bearing surge tank is connected with respectively the annular water distributor extending along the inner peripheral wall of horizontal plane and pressure-bearing surge tank, the middle and lower part of each described annular water distributor is evenly distributed with respectively to the jet hole of the axis jet of pressure-bearing surge tank, the axis of each described jet hole become with horizontal plane 30 ° ~ 45 ° angles and respectively with the axes intersect of pressure-bearing surge tank.The water inlet of every road is all by having arranged ring pipe water outlet in the tank of jet hole, and current blowing perforation oliquely downward sprays, and contacts with water body in tank with parabolical, extended with tank in duration of contact of water body, realize abundant heat exchange, avoid thermal explosion.
As preferred version of the present utility model, the intracavity bottom of described pressure-bearing surge tank is provided with disturbance impeller, described disturbance impeller is fixedly connected on disturbance impeller shaft, described disturbance impeller shaft vertically downward through the base plate of pressure-bearing surge tank and and pressure-bearing surge tank base plate realize sealing, the lower end of described disturbance impeller shaft is connected with disturbance impeller drive motor; Described disturbance impeller shaft departs from the axis of described pressure-bearing surge tank, and the plate inner wall of described pressure-bearing surge tank is provided with eddy current baffle plate, and described eddy current baffle plate extends perpendicular to base plate and along base plate diametric(al).In the time of needs blowdown, impurity often accumulates in the bottom of pressure-bearing surge tank, is difficult to discharge with current, now opens disturbance impeller bottom water flow rotation can be flashed impurity; If current are stable circulation state, good not to the disturbance effect of impurity, disturbance impeller shaft of the present utility model departs from the axis of pressure-bearing surge tank, can avoid making current to present stable circulation state; The eddy current baffle plate that plate inner wall is installed can thoroughly destroy circulation more, makes current occur turbulence state, is more conducive to disturbance and the discharge of impurity.
As preferred version of the present utility model, described sewage draining exit is provided with multiple, be divided into two groups of inner ring sewage draining exit and outer ring sewage draining exits, each inner ring sewage draining exit is evenly distributed on from pressure-bearing surge tank axis on the circumference close to, each outer ring sewage draining exit is evenly distributed on from pressure-bearing surge tank axis on the circumference away from, and each inner ring sewage draining exit and each outer ring sewage draining exit are distributed on the different diameter of base plate.The more sewage draining exit that distributes in multiple orientation of base plate, can improve contaminant removal effectiveness, reduces water displacement.
As preferred version of the present utility model, described inner ring sewage draining exit and outer ring sewage draining exit are respectively provided with four, and the angle between each inner ring sewage draining exit place diameter and adjacent sewage draining exit place, outer ring diameter is 45 °.Inner ring sewage draining exit and outer ring sewage draining exit are staggered in a circumferential direction, centered by pressure-bearing surge tank axis, be equipped with sewage draining exit to extraradial eight directions, can making blowdown more evenly rationally, better effects if, within the shortest time, get rid of as far as possible many dirts, reduce water displacement.
As preferred version of the present utility model, the intracavity bottom of described pressure-bearing surge tank is provided with sampling tube, described sampling tube stretches out outside pressure-bearing surge tank and with sampling water cooler and is connected, and online electric conductivity detector and online Ph value detector are installed on the export pipeline of described sampling water cooler.Can detect in real time in-tank mixing electrical conductivity of water and Ph value.
As preferred version of the present utility model, on described the first water inlet pipe, the second water inlet pipe, the 3rd water inlet pipe and the 4th water inlet pipe, be separately installed with temperature sensor and under meter, the different azimuth of the liquid Space of described pressure-bearing surge tank and different heights are provided with multiple temperature sensors altogether, and the gas-phase space of described pressure-bearing surge tank is provided with pressure transmitter.Temperature sensor can detect the water temperature of each water inlet pipe and pressure-bearing surge tank, and under meter can be measured the actual flow of each water inlet pipe.
Brief description of the drawings
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail, accompanying drawing only provides reference and explanation use, non-in order to limit the utility model.
Fig. 1 is the schematic diagram that secondary deaerating type of cycles is reclaimed in the exhaust steam of the utility model water of condensation de-mineralized water indirect heat exchange.
Fig. 2 is the part sectioned view at pressure-bearing surge tank the 3rd water inlet pipe position in the utility model.
Fig. 3 is the base plate vertical view of pressure-bearing surge tank in the utility model.
In figure: PLC.PLC controller;
E1. pressure-bearing surge tank; E1a. sewage draining exit; E1b. eddy current baffle plate; E1d. disturbance impeller; E1e. sampling tube;
G1. the first water inlet pipe; G2. the second water inlet pipe; G3. the 3rd water inlet pipe; G4. the 4th water inlet pipe; G5. surge tank steam discharge pipe; G6. surge tank rising pipe; G7. blow-off pipe; Vd. reverse checkvalve; V1. the first control valve; B1. the first water pump; T1. the first temperature sensor; T2. the second temperature sensor; T3. three-temperature sensor; T4. the 4th temperature sensor; T5. the 5th temperature sensor; T6. the 6th temperature sensor; T7. the 7th temperature sensor; T8. the 8th temperature sensor; P. pressure transmitter; V2. the second control valve; M1. first flow meter; M2. the second under meter; M3. the 3rd under meter; M4. the 4th under meter;
Q. the water cooler of sampling; Q1. online electric conductivity detector; Q2. online Ph value detector;
S1. calcining furnace condensate pipe; S2. fluidized-bed condensate pipe; S3. dry ammonium condensate pipe; S4. other condensate pipe; S0. water of condensation header; Y1. synthetic ammonia desalination water pipe; Y2. convert desalination water pipe;
H1. First Heat Exchanger; H1a. First Heat Exchanger circulating cooling water inlet; H1b. First Heat Exchanger circulating cooling water out; H1c. First Heat Exchanger surge tank exhaust steam import; H1d. First Heat Exchanger surge tank exhaust steam condensation-water drain; H1e. the first non-condensable gases delivery pipe; T9. the 9th temperature sensor; V3. the 3rd control valve;
E2. condensation water collection tank; E2a. condensation water collection tank rising pipe; E2b. surge tank exhaust steam water of condensation water inlet pipe; B2. the second water pump;
E3. higher-pressure deaerator; E3a. deoxygenation vapour pipe; E3b. a deoxygenation water inlet pipe; E3c. a deoxygenation steam discharge pipe; E3d. deoxygenation case water shoot; B3. the 3rd water pump; V4. the 4th control valve; V5. the 5th control valve;
H3. the 3rd interchanger; H3a. the 3rd interchanger synthetic ammonia de-mineralized water import; H3b. the 3rd interchanger synthetic ammonia de-mineralized water outlet; H3c. the 3rd interchanger mixing condensation water inlet; H3d. the 3rd interchanger mixing condensation water out; V7. the 7th control valve;
H4. the 4th interchanger; H4a. the 4th interchanger conversion de-mineralized water import; H4b. the 4th interchanger conversion de-mineralized water outlet; H4c. the 4th interchanger mixing condensation water inlet; H4d. the 4th interchanger mixing condensation water out; V8. the 8th control valve.
Embodiment
As shown in Figure 1, secondary deaerating type of cycles is reclaimed in the exhaust steam of the utility model water of condensation de-mineralized water indirect heat exchange, comprises pressure-bearing surge tank E1, the 3rd interchanger H3 and the 4th interchanger H4 of sealing.The calcining furnace water of condensation of 135 DEG C ~ 155 DEG C enters calcining furnace condensate pipe S1, the fluidized-bed water of condensation of 135 DEG C ~ 155 DEG C enters fluidized-bed condensate pipe S2, the dry ammonium water of condensation of 135 DEG C ~ 155 DEG C enters dry ammonium condensate pipe, the synthetic ammonia cooling and desalting water of 60 DEG C ~ 80 DEG C enters synthetic ammonia desalination water pipe Y1, the conversion cooling and desalting water of 60 DEG C ~ 95 DEG C enters conversion desalination water pipe Y2, calcining furnace condensate pipe S1, fluidized-bed condensate pipe S2 and dry ammonium condensate pipe S3 access respectively water of condensation header S0, also can be by other condensate pipe S4 access water of condensation header S0.
On the circumference of pressure-bearing surge tank E1, be vertically connected with the first water inlet pipe G1, the second water inlet pipe G2, the 3rd water inlet pipe G3 and the 4th water inlet pipe G4, in the relative and short transverse of the mouth of pipe of the first water inlet pipe G1 and the 3rd water inlet pipe G3, mutually stagger, in the relative and short transverse of the mouth of pipe of the second water inlet pipe G2 and the 4th water inlet pipe G4, mutually stagger, the height of the first water inlet pipe G1 and the 3rd water inlet pipe G3 is higher than the second water inlet pipe G2 and the 4th water inlet pipe G4.After synthetic ammonia cooling and desalting water and conversion cooling and desalting water heat up, access respectively the first water inlet pipe G1 and the 3rd water inlet pipe G3, after mixing condensation water for cooling, access respectively the second water inlet pipe G2 and the 4th water inlet pipe G4; The roof middle part of pressure-bearing surge tank E1 is connected with surge tank steam discharge pipe G5, and reverse checkvalve Vd and the first control valve V1 are installed on surge tank steam discharge pipe G5 from lower to upper successively.
The outlet of the first control valve V1 is connected with the First Heat Exchanger surge tank exhaust steam import H1c of First Heat Exchanger H1, the First Heat Exchanger surge tank exhaust steam condensation-water drain H1d of First Heat Exchanger H1 is connected with the surge tank exhaust steam water of condensation water inlet pipe E2b of condensation water collection tank E2, the condensation water collection tank rising pipe E2a of condensation water collection tank E2 is connected with the entrance of the second water pump B2, in the outlet pipe access pressure-bearing surge tank E1 of the second water pump B2, the First Heat Exchanger circulating cooling water inlet H1a of First Heat Exchanger H1 and First Heat Exchanger circulating cooling water out H1b connect and compose circulation with outside circulating cooling water pipe respectively, be that First Heat Exchanger circulating cooling water inlet H1a is connected with the circulating cooling water pipe of low temperature, First Heat Exchanger circulating cooling water out H1b is connected with the circulating cooling water pipe of high temperature, on the inlet duct of First Heat Exchanger circulating cooling water inlet H1a, the 3rd control valve V3 is installed, the the first non-condensable gases delivery pipe H1e stretching out is straight up installed on the outlet pipe of First Heat Exchanger surge tank exhaust steam condensation-water drain H1d, on the first non-condensable gases delivery pipe H1e, stopping valve is installed.The first non-condensable gases delivery pipe H1e is preferably installed on the highest point of First Heat Exchanger surge tank exhaust steam condensating water outlet tube, and the best is installed on the descending opposite direction of turning round of First Heat Exchanger surge tank exhaust steam condensating water outlet tube.
In pressure-bearing surge tank E1, be provided with the surge tank rising pipe G6 of opening upwards, the lower end of surge tank rising pipe G6 is connected with the entrance of the first water pump B1 through the base plate of pressure-bearing surge tank E1, the outlet of the first water pump B1 is through a deoxygenation water inlet pipe E3b of the 5th control valve V5 access higher-pressure deaerator E3, the entrance of deoxygenation case water shoot E3d access the 3rd water pump B3 of higher-pressure deaerator E3, the outlet access boiler replenishing water pipe of the 3rd water pump B3, external steam is by the 4th control valve V4 access deoxygenation vapour pipe E3a, the deoxygenation crown portion of higher-pressure deaerator E3 is connected with a deoxygenation steam discharge pipe E3c of discharge deoxygenation exhaust steam and non-condensable gases.
The base plate of pressure-bearing surge tank E1 is provided with sewage draining exit E1a, and sewage draining exit E1a is connected with blow-off pipe G7, and the second control valve V2 is installed on blow-off pipe G7.
The outlet of water of condensation header S0 is connected with the 3rd interchanger mixing condensation water inlet H3c of the 3rd interchanger H3 and the 4th interchanger mixing condensation water inlet H4c of the 4th interchanger H4 respectively, the 3rd interchanger mixing condensation water out H3d of the 3rd interchanger H3 is connected with the second water inlet pipe G2, and the 4th interchanger mixing condensation water out H4d of the 4th interchanger H4 is connected with the 4th water inlet pipe G4; Synthetic ammonia desalination water pipe Y1 is connected with the 3rd interchanger synthetic ammonia de-mineralized water import H3a of the 3rd interchanger H3, the 3rd interchanger synthetic ammonia de-mineralized water outlet H3b of the 3rd interchanger H3 is connected with the first water inlet pipe G1, conversion desalination water pipe Y2 is connected with the 4th interchanger conversion de-mineralized water import H4a, and the 4th interchanger conversion de-mineralized water outlet H4b of the 4th interchanger H4 is connected with the 3rd water inlet pipe G3.
When work, the calcining furnace water of condensation of 135 DEG C ~ 155 DEG C, the dry ammonium water of condensation of the fluidized-bed water of condensation of 135 DEG C ~ 155 DEG C and 135 DEG C ~ 155 DEG C enters first respectively water of condensation header S0 to be mixed, other water of condensation also can enter water of condensation header S0 to be mixed, mixing condensation water enters respectively the 3rd interchanger H3 and the 4th interchanger H4 and the synthetic ammonia de-mineralized water of 60 DEG C ~ 80 DEG C and the conversion de-mineralized water of 60 DEG C ~ 95 DEG C again and carries out indirect heat exchange, the temperature of mixing condensation water reduces, the temperature of synthetic ammonia de-mineralized water and conversion de-mineralized water raises, dwindle the temperature difference of mixing condensation water and de-mineralized water, make the temperature field in pressure-bearing surge tank more even.From position, higher the first water inlet pipe G1 and the 3rd water inlet pipe G3 enters respectively for the synthetic ammonia cooling and desalting water that temperature is relatively low, density is higher and conversion cooling and desalting water; The second water inlet pipe G2 and the 4th water inlet pipe G4 that the mixing condensation water that temperature is relatively high, density is lower is lower from position enter pressure-bearing surge tank E1, can in pressure-bearing surge tank, form natural convection, promote abundant heat exchange.After synthetic ammonia cooling and desalting water, conversion cooling and desalting water and mixing condensation water are mixed, discharge from surge tank rising pipe G6, send into higher-pressure deaerator E3 by the first water pump B1 and carry out secondary deoxygenation.The temperature of synthetic ammonia cooling and desalting water and conversion cooling and desalting water is slightly low and contain the non-condensable gasess such as oxygen, the non-condensable gasess such as the high and oxygen-free gas of mixing condensation water temp, synthetic ammonia cooling and desalting water, temperature rise after conversion cooling and desalting water and mixing condensation water are mixed, and the operating pressure of pressure-bearing surge tank E1 is the corresponding saturation pressure of pressure-bearing surge tank mixing water temperature, the pressure component of oxygen and other non-condensable gases is close to zero, solubleness is close to zero, after overflowing the pressure-bearing surge tank water surface, discharge from surge tank steam discharge pipe G5 with surge tank exhaust steam, realize one-level deoxygenation, sent into a deoxygenation water inlet pipe E3b of higher-pressure deaerator E3 through the first water pump B1 and the 5th control valve V5 by surge tank rising pipe G6 discharge through the water of one-level deoxygenation, external steam enters deoxygenation head to carrying out secondary deoxygenation from deoxygenation vapour pipe E3a and the 4th control valve V4, the non-condensable gasess such as deoxygenation exhaust steam and oxygen are discharged from a deoxygenation steam discharge pipe E3c, water through secondary deoxygenation is discharged from deoxygenation case water shoot E3d, sends into boiler as boiler replenishing water by the 3rd water pump B3.
Surge tank exhaust steam enters First Heat Exchanger H1 from First Heat Exchanger surge tank exhaust steam import H1c, being recycled water coolant becomes surge tank exhaust steam water of condensation after indirectly cooling and discharges from First Heat Exchanger surge tank exhaust steam condensation-water drain H1d, this surge tank water of condensation enters condensation water collection tank E2 from surge tank exhaust steam water of condensation water inlet pipe E2b, enter the second water pump B2 from condensation water collection tank rising pipe E2a again, the non-condensable gasess such as the second water pump B2 is pumped in pressure-bearing surge tank E1, the oxygen of discharging with surge tank exhaust steam are discharged from the first non-condensable gases delivery pipe H1e.Reverse checkvalve Vd on surge tank steam discharge pipe G5 can guarantee that atmosphere can not pour in down a chimney to pressure-bearing surge tank E1, prevents from introducing extraneous oxygen.The first control valve V1 can control the quantity discharged of surge tank exhaust steam, make to maintain certain pressure in pressure-bearing surge tank E1, to fully receive the heat of water of condensation and de-mineralized water, reduce the loss of surge tank exhaust steam discharge and heat, improve boiler replenishing water temperature, reduced unit steam coal consumption.Along with the increase of working hour, pressure-bearing surge tank E1 can gather certain impurity in bottom, and water quality can decline, and now can open the second control valve V2, and the water of discharging water quality variation from blow-off pipe G7, guarantees boiler replenishing water water quality.
As improvement, the first temperature sensor T1 and first flow meter M1 are installed on the first water inlet pipe G1, the second temperature sensor T2 and the second under meter M2 are installed on the second water inlet pipe G2, three-temperature sensor T3 and the 3rd under meter M3 are installed on the 3rd water inlet pipe G3, the 4th temperature sensor T4 and the 4th under meter M4 are installed on the 4th water inlet pipe G4.Different azimuth and the different heights of the liquid Space of pressure-bearing surge tank E1 are provided with multiple temperature sensors altogether, for example, be separately installed with the 5th temperature sensor T5, the 6th temperature sensor T6, the 7th temperature sensor T7 and the 8th temperature sensor T8 at height different sites.The gas-phase space of pressure-bearing surge tank E1 is also provided with pressure transmitter P.
For improving the automatization level of system, the signal wire of the first temperature sensor T1, the second temperature sensor T2, three-temperature sensor T3, the 4th temperature sensor T4, the 5th temperature sensor T5, the 6th temperature sensor T6, the 7th temperature sensor T7, the 8th temperature sensor T8, first flow meter M1, the second under meter M2, the 3rd under meter M3, the 4th under meter M4 and pressure transmitter P accesses respectively the corresponding signal input terminus of PLC controller, and the corresponding signal output terminal of PLC controller is connected with the control line of the first control valve V1.
The aperture of controlling the first control valve V1 in the time that PLC controller detects t>t0 or p>p0 strengthens, and the aperture of controlling the first control valve V1 in the time that PLC controller detects t<t0 or p<p0 reduces; Wherein t is the mean value of the water temperature that each temperature sensor is surveyed of pressure-bearing surge tank liquid Space, for example, be the mean value of the 5th temperature sensor T5, the 6th temperature sensor T6, the 7th temperature sensor T7 and the 8th temperature sensor water temperature that T8 surveys; The force value that p surveys for pressure transmitter P; T0 is the set temperature value of PLC controller, and t0=(t1 × m1+t2 × m2+t3 × m3+t4 × m4) ÷ (m1+m2+m3+m4) × safety coefficient, t1, t2, t3 and t4 are respectively the water temperature that the first temperature sensor T1, the second temperature sensor T2, three-temperature sensor T3 and the 4th temperature sensor T4 detect, and m1, m2, m3 and m4 are respectively first flow meter M1, the second under meter M2, the 3rd under meter M3 and the measured flow of the 4th under meter M4.P0 is the setup pressure value of PLC controller, and p0 is the saturation pressure value of water vapor corresponding at t0 temperature, and safety coefficient gets 0.8 ~ 0.95.
The set temperature value of PLC controller is got the weighted mean water temperature t0 of each water inlet pipe, there is one-to-one relationship in saturation pressure p0 and the water temperature t0 of water vapor, in the time that temperature in tank is greater than design temperature or tank internal pressure and is greater than setting pressure, the aperture of PLC controller control the first control valve V1 strengthens, to strengthen the discharge of surge tank exhaust steam; When temperature in tank is lower than design temperature or tank internal pressure during lower than setting pressure, the aperture of PLC controller control the first control valve V1 reduces, and prevents from that steam discharge is excessive even to occur that tank outer air pours in down a chimney.Adopt PLC controller automatically to regulate the aperture of the first control valve V1 according to water temperature and pressure, improved the automatization level of system, avoid the excess discharge of surge tank exhaust steam, guarantee that pressure-bearing surge tank is operated at the peak pressure/temperature of permission, not only energy-conservation but also environmental protection.
For improving automatization level, on the inlet duct of the 3rd interchanger mixing condensation water inlet H3c, the 7th control valve V7 is installed, on the inlet duct of the 4th interchanger mixing condensation water inlet H4c, the 8th control valve V8 is installed, the corresponding signal output terminal of PLC controller is connected with the control line of the 8th control valve V8 with the 7th control valve V7, the aperture of water temperature control the 7th control valve V7 that PLC controller detects according to the second temperature sensor T2 on the first temperature sensor T1 and the second water inlet pipe on the first water inlet pipe; The aperture of water temperature control the 8th control valve V8 that PLC controller detects according to the 4th temperature sensor T4 on three-temperature sensor T3 and the 4th water inlet pipe on the 3rd water inlet pipe.
As improvement, the 9th temperature sensor T9 that surveys surge tank exhaust steam condensate temperature is installed on the outlet pipe of First Heat Exchanger surge tank exhaust steam condensation-water drain H1d, the 9th temperature sensor T9 can detect the temperature of the surge tank exhaust steam water of condensation of arranging of First Heat Exchanger H1, the corresponding signal input terminus of the signal wire access PLC controller of the 9th temperature sensor, the corresponding signal output terminal of PLC controller is connected with the control line of the 3rd control valve V3, the temperature height that PLC controller detects according to the 9th temperature sensor T9 is controlled the aperture size of the 3rd control valve V3, to control the cooling water flow that enters First Heat Exchanger H1.
The intracavity bottom of pressure-bearing surge tank E1 can be provided with sampling tube E1e, sampling tube E1e stretches out outside pressure-bearing surge tank E1 and with sampling water cooler Q and is connected, online electric conductivity detector Q1 and online Ph value detector Q2 are installed, to detect in real time in-tank mixing electrical conductivity of water and Ph value on the export pipeline of sampling water cooler Q.
For improving the automatization level of system, the signal wire of online electric conductivity detector Q1 and online Ph value detector Q2 accesses respectively the corresponding signal input terminus of PLC controller, and the corresponding signal output terminal of PLC controller is connected with the control line of the second control valve V2; In the time that PLC controller detects that Ph value that specific conductivity that online electric conductivity detector Q1 provides is greater than set(ting)value or online Ph value detector Q2 and provides exceedes setting range, controlling the second control valve V2 opens, when PLC controller detects that specific conductivity that online electric conductivity detector Q1 provides is less than Ph value that set(ting)value and online Ph value detector Q2 provide and controls the second control valve V2 in setting range time and close, the specific conductivity providing according to online electric conductivity detector Q1 and the Ph value that Ph value detector Q2 provides are online provided, automatically control the keying of the second control valve V2.
As shown in Figure 2, as improvement, the mouth of pipe that the first water inlet pipe G1, the second water inlet pipe G2, the 3rd water inlet pipe G3 and the 4th water inlet pipe G4 are positioned at pressure-bearing surge tank is connected with respectively the annular water distributor extending along the inner peripheral wall of horizontal plane and pressure-bearing surge tank, in Fig. 2 taking the 3rd water inlet pipe G3 as example, the middle and lower part of each annular water distributor is evenly distributed with respectively to the jet hole of the axis jet of pressure-bearing surge tank, the axis of each jet hole become with horizontal plane 30 ° ~ 45 ° angles and respectively with the axes intersect of pressure-bearing surge tank.The water inlet of every road is all by having arranged ring pipe water outlet in the tank of jet hole, and current blowing perforation oliquely downward sprays, and contacts with water body in tank with parabolical, extended with tank in duration of contact of water body, realize abundant heat exchange, avoid thermal explosion.
Because impurity accumulates in the bottom of pressure-bearing surge tank, when blowdown, be difficult to discharge with current, can disturbance impeller E1d be installed at the intracavity bottom of pressure-bearing surge tank, disturbance impeller E1d is fixedly connected on disturbance impeller shaft, disturbance impeller shaft vertically downward through the base plate of pressure-bearing surge tank and and pressure-bearing surge tank base plate realize sealing, the lower end of disturbance impeller shaft is connected with disturbance impeller drive motor, opens disturbance impeller E1d bottom water flow rotation can be flashed impurity, is beneficial to discharge.
Disturbance impeller shaft preferably departs from the axis of pressure-bearing surge tank, to avoid making current present stable circulation state.
As shown in Figure 3, as improvement, the plate inner wall of pressure-bearing surge tank can be provided with eddy current baffle plate E1b, eddy current baffle plate E1b extends perpendicular to base plate and along base plate diametric(al), eddy current baffle plate E1b can thoroughly destroy circulation, makes current occur turbulence state, is more conducive to disturbance and the discharge of impurity.
Sewage draining exit E1a can be provided with multiple, for example be divided into two groups of inner ring sewage draining exit and outer ring sewage draining exits, each inner ring sewage draining exit is evenly distributed on from pressure-bearing surge tank axis on the circumference close to, each outer ring sewage draining exit is evenly distributed on from pressure-bearing surge tank axis on the circumference away from, and each inner ring sewage draining exit and each outer ring sewage draining exit are distributed on the different diameter of pressure-bearing surge tank base plate.
Inner ring sewage draining exit and outer ring sewage draining exit are preferably respectively provided with four, inner ring sewage draining exit and outer ring sewage draining exit are staggered in a circumferential direction, the 45 ° of settings of staggering successively in phase place, four inner ring sewage draining exits layout that assumes diamond in shape, four outer ring sewage draining exits are arranged in squares, and the angle between each inner ring sewage draining exit place diameter and adjacent sewage draining exit place, outer ring diameter is 45 °.
The foregoing is only the better possible embodiments of the utility model, non-ly therefore limit to scope of patent protection of the present utility model.In addition to the implementation, the utility model can also have other embodiments, and whole device can share a PLC controller, also can each unit by PLC controller control separately.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop in the protection domain of the utility model requirement.
Claims (7)
1. secondary deaerating type of cycles is reclaimed in a water of condensation de-mineralized water indirect heat exchange exhaust steam, calcining furnace water of condensation, fluidized-bed water of condensation and dry ammonium water of condensation enter respectively calcining furnace condensate pipe, fluidized-bed condensate pipe and dry ammonium condensate pipe, synthetic ammonia cooling and desalting water enters synthetic ammonia desalination water pipe, and conversion cooling and desalting water enters conversion desalination water pipe, described calcining furnace condensate pipe, fluidized-bed condensate pipe and dry ammonium condensate pipe access respectively water of condensation header, it is characterized in that: also comprise the 3rd interchanger, the pressure-bearing surge tank of the 4th interchanger and sealing, on the circumference of described pressure-bearing surge tank, be vertically connected with the first water inlet pipe, the second water inlet pipe, the 3rd water inlet pipe and the 4th water inlet pipe, in the relative and short transverse of the mouth of pipe of described the first water inlet pipe and the 3rd water inlet pipe, mutually stagger, in the relative and short transverse of the mouth of pipe of described the second water inlet pipe and the 4th water inlet pipe, mutually stagger, the height of described the first water inlet pipe and the 3rd water inlet pipe is higher than described the second water inlet pipe and the 4th water inlet pipe, the outlet of described water of condensation header is connected with the 3rd interchanger mixing condensation water inlet of described the 3rd interchanger and the 4th interchanger mixing condensation water inlet of the 4th interchanger respectively, the 3rd interchanger mixing condensation water out of described the 3rd interchanger is connected with described the second water inlet pipe, and the 4th interchanger mixing condensation water out of described the 4th interchanger is connected with described the 4th water inlet pipe, described synthetic ammonia desalination water pipe is connected with the 3rd interchanger synthetic ammonia de-mineralized water import of described the 3rd interchanger, the 3rd interchanger synthetic ammonia de-mineralized water outlet of described the 3rd interchanger is connected with described the first water inlet pipe, described conversion desalination water pipe is connected with the 4th interchanger conversion de-mineralized water import, and the 4th interchanger conversion de-mineralized water outlet of described the 4th interchanger is connected with described the 3rd water inlet pipe, the roof middle part of described pressure-bearing surge tank is connected with surge tank steam discharge pipe, and reverse checkvalve and the first control valve are installed on described surge tank steam discharge pipe from lower to upper successively, the outlet of described the first control valve is connected with the First Heat Exchanger surge tank exhaust steam import of First Heat Exchanger, the First Heat Exchanger surge tank exhaust steam condensation-water drain of described First Heat Exchanger is connected with the surge tank exhaust steam water of condensation water inlet pipe of condensation water collection tank, the condensation water collection tank rising pipe of described condensation water collection tank is connected with the entrance of the second water pump, and the outlet pipe of described the second water pump accesses in described pressure-bearing surge tank, the First Heat Exchanger circulating cooling water inlet of described First Heat Exchanger and First Heat Exchanger circulating cooling water out connect and compose circulation with outside circulating cooling water pipe respectively, the 3rd control valve is installed on the inlet duct of First Heat Exchanger circulating cooling water inlet, the first non-condensable gases delivery pipe stretching out is straight up installed on the outlet pipe of First Heat Exchanger surge tank exhaust steam condensation-water drain, in described pressure-bearing surge tank, be provided with the surge tank rising pipe of opening upwards, the lower end of described surge tank rising pipe is connected with the entrance of the first water pump through the base plate of pressure-bearing surge tank, described the first water pump outlet is through a deoxygenation water inlet pipe of the 5th control valve access higher-pressure deaerator, the entrance of deoxygenation case water shoot access the 3rd water pump of described higher-pressure deaerator, described the 3rd water pump outlet access boiler replenishing water pipe, external steam is by the 4th control valve access deoxygenation vapour pipe, the deoxygenation crown portion of described higher-pressure deaerator is connected with a deoxygenation steam discharge pipe of discharge deoxygenation exhaust steam and non-condensable gases, the base plate of described pressure-bearing surge tank is provided with sewage draining exit, and described sewage draining exit is connected with blow-off pipe, and the second control valve is installed on described blow-off pipe.
2. secondary deaerating type of cycles is reclaimed in water of condensation de-mineralized water indirect heat exchange exhaust steam according to claim 1, it is characterized in that: the mouth of pipe that described the first water inlet pipe, the second water inlet pipe, the 3rd water inlet pipe and the 4th water inlet pipe are positioned at pressure-bearing surge tank is connected with respectively the annular water distributor extending along the inner peripheral wall of horizontal plane and pressure-bearing surge tank, the middle and lower part of each described annular water distributor is evenly distributed with respectively to the jet hole of the axis jet of pressure-bearing surge tank, the axis of each described jet hole become with horizontal plane 30 ° ~ 45 ° angles and respectively with the axes intersect of pressure-bearing surge tank.
3. secondary deaerating type of cycles is reclaimed in water of condensation de-mineralized water indirect heat exchange exhaust steam according to claim 1, it is characterized in that: the intracavity bottom of described pressure-bearing surge tank is provided with disturbance impeller, described disturbance impeller is fixedly connected on disturbance impeller shaft, described disturbance impeller shaft vertically downward through the base plate of pressure-bearing surge tank and and pressure-bearing surge tank base plate realize sealing, the lower end of described disturbance impeller shaft is connected with disturbance impeller drive motor; Described disturbance impeller shaft departs from the axis of described pressure-bearing surge tank, and the plate inner wall of described pressure-bearing surge tank is provided with eddy current baffle plate, and described eddy current baffle plate extends perpendicular to base plate and along base plate diametric(al).
4. secondary deaerating type of cycles is reclaimed in water of condensation de-mineralized water indirect heat exchange exhaust steam according to claim 1, it is characterized in that: described sewage draining exit is provided with multiple, be divided into two groups of inner ring sewage draining exit and outer ring sewage draining exits, each inner ring sewage draining exit is evenly distributed on from pressure-bearing surge tank axis on the circumference close to, each outer ring sewage draining exit is evenly distributed on from pressure-bearing surge tank axis on the circumference away from, and each inner ring sewage draining exit and each outer ring sewage draining exit are distributed on the different diameter of base plate.
5. secondary deaerating type of cycles is reclaimed in water of condensation de-mineralized water indirect heat exchange exhaust steam according to claim 4, it is characterized in that: described inner ring sewage draining exit and outer ring sewage draining exit are respectively provided with four, the angle between each inner ring sewage draining exit place diameter and adjacent sewage draining exit place, outer ring diameter is 45 °.
6. secondary deaerating type of cycles is reclaimed in water of condensation de-mineralized water indirect heat exchange exhaust steam according to claim 1, it is characterized in that: the intracavity bottom of described pressure-bearing surge tank is provided with sampling tube, described sampling tube stretches out outside pressure-bearing surge tank and with sampling water cooler and is connected, and online electric conductivity detector and online Ph value detector are installed on the export pipeline of described sampling water cooler.
7. secondary deaerating type of cycles is reclaimed in water of condensation de-mineralized water indirect heat exchange exhaust steam according to claim 1, it is characterized in that: on described the first water inlet pipe, the second water inlet pipe, the 3rd water inlet pipe and the 4th water inlet pipe, be separately installed with temperature sensor and under meter, the different azimuth of the liquid Space of described pressure-bearing surge tank and different heights are provided with multiple temperature sensors altogether, and the gas-phase space of described pressure-bearing surge tank is provided with pressure transmitter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420313462.4U CN203946910U (en) | 2014-06-13 | 2014-06-13 | Secondary deaerating type of cycles is reclaimed in the exhaust steam of water of condensation de-mineralized water indirect heat exchange |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420313462.4U CN203946910U (en) | 2014-06-13 | 2014-06-13 | Secondary deaerating type of cycles is reclaimed in the exhaust steam of water of condensation de-mineralized water indirect heat exchange |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104085943A (en) * | 2014-06-13 | 2014-10-08 | 云南能投有能科技股份有限公司 | Condensate water and demineralized water indirect heat-exchange exhaust steam recovery two-stage deoxygenization device |
-
2014
- 2014-06-13 CN CN201420313462.4U patent/CN203946910U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104085943A (en) * | 2014-06-13 | 2014-10-08 | 云南能投有能科技股份有限公司 | Condensate water and demineralized water indirect heat-exchange exhaust steam recovery two-stage deoxygenization device |
| CN104085943B (en) * | 2014-06-13 | 2015-09-02 | 云南能投有能科技股份有限公司 | Secondary de-aerator plant is reclaimed in the exhaust steam of water of condensation de-mineralized water indirect heat exchange |
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