CN117606005B - ICS (ICS) system of steam generator - Google Patents
ICS (ICS) system of steam generator Download PDFInfo
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- CN117606005B CN117606005B CN202311779963.1A CN202311779963A CN117606005B CN 117606005 B CN117606005 B CN 117606005B CN 202311779963 A CN202311779963 A CN 202311779963A CN 117606005 B CN117606005 B CN 117606005B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 233
- 229920006395 saturated elastomer Polymers 0.000 claims abstract description 51
- 238000010438 heat treatment Methods 0.000 claims abstract description 46
- 238000001704 evaporation Methods 0.000 claims abstract description 28
- 230000008020 evaporation Effects 0.000 claims abstract description 28
- 239000000203 mixture Substances 0.000 claims abstract description 14
- 230000002209 hydrophobic effect Effects 0.000 claims description 21
- 238000011084 recovery Methods 0.000 claims description 7
- 238000001514 detection method Methods 0.000 claims description 6
- 239000010865 sewage Substances 0.000 claims description 3
- 230000003750 conditioning effect Effects 0.000 claims 1
- 238000007599 discharging Methods 0.000 abstract description 2
- 239000002351 wastewater Substances 0.000 abstract description 2
- 239000007788 liquid Substances 0.000 description 19
- 230000001105 regulatory effect Effects 0.000 description 8
- 230000000694 effects Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 3
- 239000003546 flue gas Substances 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 239000000779 smoke Substances 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000013021 overheating Methods 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000005871 repellent Substances 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 239000008234 soft water Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B37/00—Component parts or details of steam boilers
- F22B37/02—Component parts or details of steam boilers applicable to more than one kind or type of steam boiler
- F22B37/34—Adaptations of boilers for promoting water circulation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B29/00—Steam boilers of forced-flow type
- F22B29/02—Steam boilers of forced-flow type of forced-circulation type
- F22B29/023—Steam boilers of forced-flow type of forced-circulation type without drums, i.e. without hot water storage in the boiler
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B37/00—Component parts or details of steam boilers
- F22B37/02—Component parts or details of steam boilers applicable to more than one kind or type of steam boiler
- F22B37/26—Steam-separating arrangements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22D—PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
- F22D1/00—Feed-water heaters, i.e. economisers or like preheaters
- F22D1/02—Feed-water heaters, i.e. economisers or like preheaters with water tubes arranged in the boiler furnace, fire tubes, or flue ways
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat Treatment Of Water, Waste Water Or Sewage (AREA)
Abstract
The invention relates to the field of steam generators, and in particular discloses a steam generator ICS system, which comprises: a coil unit having an evaporator coil positioned in the furnace and an energy-saving heating coil positioned above the evaporator coil, wherein the deoxygenated feedwater is heated to near saturation temperature after being pumped into the energy-saving heating coil; the steam-water separator is provided with a water supply inlet, a steam-water mixture inlet, a saturated steam outlet, a water outlet and a water drain, wherein the water supply inlet is connected with a water outlet of the energy-saving heating coil pipe through a pipeline, the steam-water mixture inlet is connected with a water outlet of the evaporation section coil pipe through a pipeline, the saturated steam outlet is used for outputting saturated steam, and the water drain is used for discharging trapped wastewater at the bottom of the steam-water separator; the system has the advantages of high steam supply efficiency, high utilization rate of recovered condensed water and low-grade heat energy, and the like.
Description
Technical Field
The invention relates to the field of steam generators, in particular to a steam generator ICS system, wherein the ICS system is called INFINSTEAM CIRCULATION SYSTEM in English, namely a boiler water coil internal circulation or drainage recirculation system.
Background
As known, chinese patent publication No. CN103512018a, publication No. 2016-02-10 discloses a steam generator, which is composed of a coil pipe assembly, a burner, a steam-water separator, a water supply device, and the like, wherein deoxygenated water is pumped into a water inlet of a coil pipe through a water supply pump, the coil pipe is placed in a furnace chamber on the burner, high-temperature flue gas exchanges heat with fluid in a heat exchange coil pipe to form a steam-water mixture with a certain temperature and pressure, and then enters the steam-water separator for steam-water separation, wherein saturated steam is discharged into a superheater through a main steam pipeline, and saturated water is recovered to the deoxygenated water tank through a water outlet of the steam-water separator and then pumped to the heat exchange coil pipe to complete a hydrophobic cycle.
In the operation process of the steam generator, saturated water or hydrophobic water separated from the steam-water separator is at the general temperature of 150-200 ℃, working medium water in the deoxidization water tank is at the temperature of 102-104 ℃, and saturated water with higher temperature and pressure is directly discharged into the deoxidization water tank through the hydrophobic valve, so that the working medium water in the deoxidization water tank is instantaneously vaporized and simultaneously generates a large amount of white smoke, the pressure in the deoxidization water tank is increased, hot water (such as system condensed water) outside a system cannot be accepted, abnormal shaking of the deoxidization water tank caused by a large temperature difference of cold and heat exchange is caused, and potential safety hazards are brought to equipment.
Disclosure of Invention
The invention aims to solve the technical problem of overcoming the defects of the prior art and providing the ICS system of the steam generator, which has the advantages of high steam supply efficiency, convenient recycling of system condensate water and low-grade heat energy and the like.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
A steam generator ICS system, comprising: the coil pipe device is provided with an evaporation section coil pipe positioned in the hearth and at the hearth outlet and an energy-saving heating coil pipe positioned above the evaporation section coil pipe, and the deoxygenated feed water is heated to the saturation temperature under a given pressure after being pumped into the energy-saving heating coil pipe; the steam-water separator is provided with a water supply inlet, a steam-water mixture inlet, a saturated steam outlet, a water outlet and a drain outlet, wherein the water supply inlet is connected with a water outlet of the energy-saving heating coil pipe through a pipeline, the steam-water mixture inlet is connected with a water outlet of the evaporation section coil pipe through a pipeline, the saturated steam outlet is used for outputting saturated steam, and the water outlet is used for draining sewage at the bottom of the steam-water separator; and the drainage circulating device comprises a high-temperature circulating pump, the circulating pump is connected between a drainage port of the steam-water separator and a water inlet of the evaporation section coil pipe through a pipeline, and saturated water output from the drainage port can be pumped into the evaporation section coil pipe through the circulating pump for circulating heating.
Compared with the prior art, the scheme has the following beneficial effects:
In the technical scheme, saturated water from the steam-water separator is conveyed back to the evaporation section coil pipe for continuous heating through the high-temperature shielding pump or the circulating pump in the ICS system by the arrangement of the drainage circulating device, and does not pass through the deoxidizing water tank, so that the steam generator runs as follows:
firstly, a large amount of white smoke generated by instant condensation after the saturated water with high temperature and high pressure enters the deoxidizing water tank can be avoided, impact is caused on equipment, and meanwhile the deoxidizing effect is reduced.
And secondly, the working medium in the hearth pipe can reach the steam supply state more quickly.
And thirdly, circulating utilization, namely external circulation, of excessive saturated water is not needed to be carried out by a deaerator when the steam generator operates, so that sufficient space is reserved for system condensate water recovery and low-grade heat energy utilization, and the heat efficiency of the circulating system is improved by at least 2% particularly for the system with 80% condensate water recovery.
In order to optimize the technical scheme, the following technical measures are also adopted:
As a preferred embodiment, the hydrophobic circulation device further comprises a hydrophobic shut-off valve, a filter and a hydrophobic regulating valve, wherein the hydrophobic shut-off valve and the filter are connected in series on a pipeline between the hydrophobic port and the circulation pump, and the hydrophobic regulating valve is connected on a pipeline between the circulation pump and the evaporation section coil.
As a preferred embodiment, the device further comprises a liquid level detection pipeline for detecting the liquid level of the trapped water in the steam-water separator, wherein the liquid level detection pipeline comprises a stop valve and a liquid level meter which are connected in series through pipelines in sequence.
As a preferable implementation mode, the water outlet of the energy-saving heating coil is connected with a three-way valve through a pipeline, one outlet of the three-way valve is connected with the water inlet through a pipeline, and the other outlet of the three-way valve is connected with the saturated heating coil through a pipeline.
As a preferred embodiment, the coil device further comprises an overheating coil above the energy-saving heating coil, and a steam inlet of the overheating coil is connected with a saturated steam outlet of the steam-water separator through a pipeline so as to be capable of heating saturated steam into superheated steam.
As a preferred embodiment, a burner is provided at the lower part of the coil device, the furnace is provided above the burner, and the saturated heating coil, the energy-saving heating coil and the superheating coil are sequentially connected in series.
In a preferred embodiment, the saturated water has a temperature of 180 to 250 ℃, the deoxygenated water has a temperature of 102 to 104 ℃ and a pressure of 0.02 to 0.04mpa.
The energy-saving heating coil is characterized by further comprising a water supply pipeline, wherein the water supply pipeline is connected with a water treatment device, a deoxidizing water tank and a water supply pump, and raw water is pumped into the energy-saving heating coil through the water treatment device, the deoxidizing water tank and the water supply pump in sequence.
As a preferred embodiment, the deoxidizing water tank is provided with a water return port, and the water return port is connected to a condensate recovery pipeline.
As a preferred embodiment, the liquid level gauge and the water drain adjusting valve are electrically connected to the same controller.
The system monitors the water interception liquid level in the steam-water separator in real time through the liquid level meter, sends a detected liquid level signal to a controller such as a PLC (programmable logic controller) and controls the opening degree of the water-repellent regulating valve, so that the water level of the steam-water separator is maintained at a set height, and the running process of the system is more reliable.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following brief description of the drawings of the embodiments will make it apparent that the drawings in the following description relate only to some embodiments of the present invention and are not limiting of the present invention.
FIG. 1 is a schematic diagram of a steam-water system according to a first embodiment;
Fig. 2 is a schematic flow diagram of the working fluid of the first embodiment.
Reference numerals:
A coil device 1; an energy-saving heating coil 11; a furnace 12; an evaporation section coil 13; a chimney 14; a steam-water separator 2; a feed water inlet 21; a steam-water mixture inlet 22; a drain opening 23; a drain port 24; a saturated steam outlet 25; spiral separator blades 26; a regulating valve 31; a level gauge 32; a hydrophobic shut-off valve 41; a filter 42; a circulation pump 43; an integrated heat exchanger 431; a hydrophobic regulating valve 44; a sampling cooler 5; a tap water inlet 51; a deaeration water tank 61; a water feed pump 62; a one-way water supply valve 63; a boiler blow-down outlet 7; a furnace-stopping water return port 8 is started; a main steam outlet 9.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
Unless defined otherwise, technical or scientific terms used in this patent document should be given the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The terms "first," "second," and the like in the description and in the claims, do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. Likewise, the terms "a," "an," or "the" and similar terms do not denote a limitation of quantity, but rather denote the presence of at least one. The word "comprising" or "comprises", and the like, is intended to mean that elements or items that are present in front of "comprising" or "comprising" are included in the word "comprising" or "comprising", and equivalents thereof, without excluding other elements or items. "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are used merely to denote relative positional relationships, which may be changed accordingly when the absolute position of the object being described is changed, merely to facilitate description of the present invention and to simplify description, and not to indicate or imply that the apparatus or elements being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the invention.
Some embodiments of the present invention are described in detail below with reference to the accompanying drawings. Features of the embodiments described below may be combined with each other without conflict.
Embodiment one:
The embodiment of the application provides a steam generator ICS system, which aims to solve the problems that in the prior art, the steam supply efficiency of a system is low, oxygen removing equipment is impacted by saturated water under high pressure and the like based on external circulation, namely a system realizing recirculation through an oxygen remover, not only realizes the effect that the internal circulation is hydrophobic, namely the water can directly reenter a heat exchange coil to exchange heat, so that the system can reach the steam supply state more quickly, but also improves the thermal efficiency of the whole system.
Referring to fig. 1 to 2, the steam generator ICS system in this embodiment specifically includes a coil device 1, a steam-water separator 2, and a cavitation prevention and circulating water amount adjustment device, where the coil device 1 has a burner located in a furnace 12, an evaporation section coil 13 located in the furnace 12 and at the outlet of the furnace, and an energy-saving heating coil 11 located above the evaporation section coil 13, where deoxygenated feedwater or cold water is heated to a saturation temperature at a given pressure after being pumped into the energy-saving heating coil 11, and the lower part of the steam-water separator 2 may be integrally designed as a circulating water tank, typically having a feedwater inlet 21, a steam-water mixture inlet 22, a saturated steam outlet 25, a drain 23, and a drain 24, where the feedwater inlet 21 is connected to the water outlet of the energy-saving heating coil 11 through a pipe, the steam-water mixture inlet 22 is connected to the water outlet of the evaporation section coil 13 through a pipe, and the saturated steam outlet 25 is used for outputting saturated steam. The water outlet 23 is used for discharging sewage at the bottom of the steam-water separator 2, the drainage circulating device comprises a high-temperature circulating pump 43, the circulating pump 43 is connected between the drainage outlet 24 of the steam-water separator 2 and the water inlet of the evaporation section coil 13 through a pipeline, and saturated water output from the drainage outlet 24 can be pumped into the evaporation section coil 13 through the circulating pump 43 for circulating heating. Preferably, a separate circulation water tank can be connected to the lower part of the steam-water separator 2, and the water supply inlet 21, the steam-water mixture inlet 22, the saturated steam outlet 25, the water outlet 23 and the water drain 24 are all arranged on the circulation water tank, which is not limited in this regard.
As shown in fig. 2, in the operation process of the system, the water supply (soft water or pure water) enters the energy-saving heating coil through the water supply pump 62 to heat, so that the water supply can reach the rated water supply temperature, the water supply reaching the water supply temperature enters the steam-water separator 2 from the water supply inlet 21, then the water drain port 24 and the water drain circulating device flow into the evaporation section coil to perform radiation heat exchange, high-temperature supersaturated water or wet steam or steam-water mixture is generated, the water-water mixture enters the steam-water separator 2 through the steam-water mixture inlet to perform steam-water separation, the saturated steam is output from the saturated steam outlet, the trapped wastewater at the bottom of the inner cavity of the steam-water separator 2 is discharged through the water drain port 23, wherein the water drain port 23 is provided with two branches, one branch is connected with the start-stop furnace water return port 8, namely, the water flows back to the deaerator deaerated water tank 61, the other branch is connected with the boiler drain port 7, when the working medium level in the inner cavity of the steam-water separator 2 reaches a certain height, the water drain regulating valve 44 is opened, the saturated water enters the water drain circulating device through the water drain port 24, and is pumped into the evaporation section coil again under the action of the high-temperature circulating pump 43 to perform circulating heating, so that more wet steam enters the steam-water separator 2, and reaches a faster supply state.
In this embodiment, the saturated water from the steam-water separator 2 is conveyed back to the evaporation section coil 13 through the high-temperature shielding pump or the circulating pump 43 in the ICS system to continue heating or circulating secondary heating without passing through the deoxidizing water tank 61 by the hydrophobic circulating device, so that the steam generator not only can make the working medium in the furnace 12 reach the steam supply state faster, but also can avoid a large amount of white smoke generated due to instant condensation after the saturated water with high temperature and high pressure enters the deoxidizing water tank 61, thereby causing impact to equipment and reducing deoxidizing effect. And in addition, the excessive saturated water is not required to be recycled by a deaerator during the operation of the steam generator, namely, the external circulation is not required, so that sufficient space is reserved for the recovery of the condensed water and the utilization of low-grade heat energy of the system, and the system is particularly suitable for the system with 80% condensed water recovery, and the thermal efficiency of the circulating system is improved by at least 2%.
Specifically, the drainage circulation device further comprises a drainage shutoff valve 41, a filter 42 and a drainage regulating valve 44, wherein the drainage shutoff valve 41 and the filter 42 are connected in series on a pipeline between the drainage port 24 and the circulation pump 43, and the drainage regulating valve 44 is connected on a pipeline between the circulation pump 43 and the evaporation section coil 13, wherein the drainage shutoff valve 41 can be a pneumatic drainage valve. As shown in fig. 1, in this embodiment, the device further includes a liquid level detection pipeline for detecting the level of trapped water in the steam-water separator 2, where the liquid level detection pipeline includes a stop valve 31 and a liquid level meter 32 that are sequentially connected in series through a pipeline, the liquid level meter 32 may be a magnetic flap type force liquid level meter, a spiral separation blade 26 is disposed in the steam-water separator 2, the upper end of the liquid level meter is communicated with the outer wall of the upper portion of the steam-water separator 2 through a pipeline, and the pressure of the upper end of the liquid level meter is kept consistent with the inner cavity of the separator. Here, the liquid level meter 32 and the drain shutoff valve 41 are electrically connected to the same controller, in the system, the liquid level meter 32 monitors the level of the trapped water in the steam-water separator 2 in real time, and sends the detected liquid level signal to the controller, such as a PLC controller, and controls the opening degree of the drain regulator valve 44, so that the water level of the steam-water separator 2 is maintained at a set height, and the system cooperates the drain regulator valve 44 with the liquid level meter 32 of the steam-water separator 2 to control the water level of the steam-water separator 2, so that the running process of the system is more reliable.
For the superheated steam boiler, the coil device 1 further comprises a superheated coil above the energy-saving heating coil 11, and a steam inlet of the superheated coil is connected with a saturated steam outlet 25 of the steam-water separator 2 through a pipeline so as to heat the saturated steam into superheated steam, and the superheated steam can be output from a main steam outlet 9 to equipment such as a steam turbine which needs steam to do work. Still further, the upper portion of the coil apparatus 1 is provided with a chimney 14, the superheating coil is disposed at a flue position between the chimney 14 and the energy-saving heating coil 11, the lower portion of the coil apparatus 1 is provided with a burner, the furnace 12 is disposed above the burner, and the saturated heating coil, the energy-saving heating coil 11 and the superheating coil are sequentially connected in series. By adopting the vertical coil heat exchanger, the flowing direction of working medium is the countercurrent direction of the high-temperature flue gas direction, so that the optimal heat exchange effect can be obtained, the utilization rate of flue gas heat energy is high, the whole occupied area of the equipment is small, and the intensive management is convenient.
In this embodiment, as shown in fig. 1, an integrated heat exchanger 431 is disposed on the circulating pump 43, after the circulating cooling water exchanges heat with the saturated water in the integrated heat exchanger 431, the cooled saturated water enters the evaporation section coil 13, where the temperature of the saturated water is 180-250 ℃, the temperature of the deoxygenated water is 102-104 ℃, and the pressure is 0.02-0.04 mpa.
As shown in fig. 2, the embodiment further includes a water supply pipeline, and the water supply pipeline is connected with a water treatment device, a deoxidizing water tank 61, a water supply pump 62 and a one-way water supply valve 63, the one-way water supply valve 63 is started, and raw water or boiler makeup water is pumped into the energy-saving heating coil 11 through the water treatment device, the deoxidizing water tank 61 and the water supply pump 62 in sequence.
In order to be convenient for retrieve steam boiler return water, have a return water mouth on the deoxidization water tank 61, the return water mouth is connected to condensate recovery pipeline, can further improve system condensate recycle efficiency.
In addition, in order to be convenient for carry out the sample chemical examination to soda, hydrophobic circulating device's end still is connected with the sample pipeline, be provided with sample cooler 5 on the sample pipeline, the running water carries out heat exchange with saturated water from the cold water tank that running water inlet 51 got into sample cooler 5, and saturated water cooling forms the sample water that accords with the chemical examination requirement.
Embodiment two:
the basic structure of the ICS system of this embodiment is the same as that of the first embodiment, and the difference between the two is that the water outlet of the energy-saving heating coil 11 is connected to a three-way valve through a pipeline, one outlet of the three-way valve is connected to the water supply inlet 21 through a pipeline, and the other outlet of the three-way valve is connected to the saturated heating coil through a pipeline. In the first embodiment, the water supply reaching the water supply temperature is sent to the evaporation section coil 13 through the steam-water separator 2 and the drainage circulation device for first heating, and in the embodiment, the water supply can directly enter the evaporation section coil 13 through the three-way valve for first heating after flowing out of the energy-saving heating coil without passing through the steam-water separator 2, so that the efficiency of heat transfer and heat exchange of working media can be saved, and the cleaning and maintenance of system components are facilitated.
In summary, in the above embodiment, by setting the internal circulation type drainage circulation device, the saturated water from the steam-water separator 2 is conveyed back to the evaporation section coil 13 through the circulation pump 43 for circulation heating, and does not pass through the deoxidizing water tank 61, so that the working medium in the furnace 12 of the steam generator can reach the steam supply state more quickly, the thermal efficiency of the whole steam-water circulation system is improved, and the space is saved for recycling the condensed water and low-grade heat energy in the system.
The foregoing is merely illustrative of the present invention, and the present invention is not limited thereto, and any changes or substitutions easily contemplated by those skilled in the art within the scope of the present invention should be included in the present invention. Therefore, the protection scope of the invention is subject to the protection scope of the claims.
Claims (10)
1. A steam generator ICS system, comprising:
the coil device is provided with a high-temperature evaporation section coil pipe positioned in the hearth and at the hearth outlet and an energy-saving heating coil pipe positioned above the evaporation section coil pipe, and the deoxygenated feed water is heated to the saturation temperature under a given pressure after being pumped into the energy-saving heating coil pipe;
The steam-water separator is provided with a water supply inlet, a steam-water mixture inlet, a saturated steam outlet, a water outlet and a drain outlet, wherein the water supply inlet is connected with a water outlet of the energy-saving heating coil pipe through a pipeline, the steam-water mixture inlet is connected with a water outlet of the evaporation section coil pipe through a pipeline, the saturated steam outlet is used for outputting saturated steam, and the water outlet is used for draining sewage at the bottom of the steam-water separator; and
The drainage circulating device comprises a high-temperature circulating pump and a circulating water quantity adjusting device, wherein the circulating pump is connected between a drainage port of the steam-water separator and a water inlet of an evaporation section coil pipe through a pipeline, and saturated water output from the drainage port can sequentially pass through the circulating water quantity adjusting device and the circulating pump and is pumped into the evaporation section coil pipe to be circularly heated.
2. The steam generator ICS system of claim 1, wherein said hydrophobic circulation means further comprises a hydrophobic shut-off valve, a filter, and a hydrophobic regulator valve, wherein said hydrophobic shut-off valve, filter are connected in series on a conduit between a hydrophobic port and a circulation pump, and said hydrophobic regulator valve is connected on a conduit between a circulation pump and an evaporation section coil.
3. The steam generator ICS system of claim 2, further comprising a level detection line for detecting a level of trapped water within said steam-water separator, said level detection line comprising a shut-off valve and a level gauge connected in series by a conduit in sequence.
4. The steam generator ICS system of claim 1, wherein the water outlet of said energy-saving heating coil is connected by a pipe to a three-way valve, one of said three-way valve is connected by a pipe to the water inlet, and the other of said three-way valve is connected by a pipe to the saturated heating coil.
5. The steam generator ICS system of claim 4, wherein said coil means further comprises a superheating coil located above said energy efficient heating coil, the steam inlet of said superheating coil being connected by a pipe to the saturated steam outlet of the steam-water separator to enable heating of saturated steam to superheated steam.
6. The steam generator ICS system of claim 5, wherein said coil means is provided with a burner in a lower portion thereof, said furnace being provided above the burner, and said saturated heating coil, energy-saving heating coil and superheating coil are connected in series in this order.
7. The steam generator ICS system of claim 1, wherein said saturated water has a temperature of 180 to 250 ℃, deoxygenated feedwater has a temperature of 102 to 104 ℃, and a pressure of 0.02 to 0.04mpa.
8. The steam generator ICS system of claim 1, further comprising a water feed line connected to the water treatment device, the deoxygenated water tank, and the water feed pump, wherein raw water is pumped into the energy-saving heating coil sequentially through the water treatment device, the deoxygenated water tank, and the water feed pump.
9. The steam generator ICS system of claim 8, wherein said deoxygenated water tank has a return port thereon, said return port being connected to a condensate recovery line.
10. The steam generator ICS system of claim 3, wherein said level gauge and said hydrophobic conditioning valve are each electrically connected to the same controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311779963.1A CN117606005B (en) | 2023-12-22 | 2023-12-22 | ICS (ICS) system of steam generator |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202311779963.1A CN117606005B (en) | 2023-12-22 | 2023-12-22 | ICS (ICS) system of steam generator |
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| CN117606005A CN117606005A (en) | 2024-02-27 |
| CN117606005B true CN117606005B (en) | 2024-05-31 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100947048B1 (en) * | 2009-10-05 | 2010-03-10 | (주)우신비엔피 | Recycling system of high temperature condensed water |
| CN203478180U (en) * | 2013-05-06 | 2014-03-12 | 中国石油天然气第八建设有限公司 | Superheated steam and subcritical pressure steam generator |
| CN206669703U (en) * | 2017-01-05 | 2017-11-24 | 中国石油天然气集团公司 | Demineralizer and oil field overheat steam injection boiler steam demineralizer |
| CN215061970U (en) * | 2021-02-20 | 2021-12-07 | 路卉 | Coil pipe structure rapid steam generation system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7587996B2 (en) * | 2006-06-07 | 2009-09-15 | Babcock & Wilcox Power Generation Group, Inc. | Circulation system for sliding pressure steam generator |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100947048B1 (en) * | 2009-10-05 | 2010-03-10 | (주)우신비엔피 | Recycling system of high temperature condensed water |
| CN203478180U (en) * | 2013-05-06 | 2014-03-12 | 中国石油天然气第八建设有限公司 | Superheated steam and subcritical pressure steam generator |
| CN206669703U (en) * | 2017-01-05 | 2017-11-24 | 中国石油天然气集团公司 | Demineralizer and oil field overheat steam injection boiler steam demineralizer |
| CN215061970U (en) * | 2021-02-20 | 2021-12-07 | 路卉 | Coil pipe structure rapid steam generation system |
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