CN111425841A - Phase-change steam boiler and application - Google Patents
Phase-change steam boiler and application Download PDFInfo
- Publication number
- CN111425841A CN111425841A CN202010371256.9A CN202010371256A CN111425841A CN 111425841 A CN111425841 A CN 111425841A CN 202010371256 A CN202010371256 A CN 202010371256A CN 111425841 A CN111425841 A CN 111425841A
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- water
- combustion
- cooling
- steam boiler
- combustion furnace
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- 238000002485 combustion reaction Methods 0.000 claims abstract description 83
- 238000001816 cooling Methods 0.000 claims abstract description 48
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 42
- 238000010438 heat treatment Methods 0.000 claims abstract description 14
- 230000007246 mechanism Effects 0.000 claims abstract description 8
- 230000008859 change Effects 0.000 claims description 15
- 239000000779 smoke Substances 0.000 claims description 4
- 230000000087 stabilizing effect Effects 0.000 claims description 4
- 238000007664 blowing Methods 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 239000007789 gas Substances 0.000 description 18
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 12
- 238000009834 vaporization Methods 0.000 description 5
- 230000008016 vaporization Effects 0.000 description 5
- 238000004880 explosion Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 239000010865 sewage Substances 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000012498 ultrapure water Substances 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- JLVVSXFLKOJNIY-UHFFFAOYSA-N Magnesium ion Chemical compound [Mg+2] JLVVSXFLKOJNIY-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- WYTGDNHDOZPMIW-RCBQFDQVSA-N alstonine Natural products C1=CC2=C3C=CC=CC3=NC2=C2N1C[C@H]1[C@H](C)OC=C(C(=O)OC)[C@H]1C2 WYTGDNHDOZPMIW-RCBQFDQVSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910001424 calcium ion Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 235000019504 cigarettes Nutrition 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000003203 everyday effect Effects 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 239000011491 glass wool Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000008236 heating water Substances 0.000 description 1
- 239000003864 humus Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910001425 magnesium ion Inorganic materials 0.000 description 1
- IJGRMHOSHXDMSA-UHFFFAOYSA-N nitrogen Substances N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- -1 silt Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B31/00—Modifications of boiler construction, or of tube systems, dependent on installation of combustion apparatus; Arrangements of dispositions of combustion apparatus
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B31/00—Modifications of boiler construction, or of tube systems, dependent on installation of combustion apparatus; Arrangements of dispositions of combustion apparatus
- F22B31/08—Installation of heat-exchange apparatus or of means in boilers for heating air supplied for combustion
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B35/00—Control systems for steam boilers
-
- 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
- F22B37/10—Water tubes; Accessories therefor
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Steam Boilers And Waste-Gas Boilers (AREA)
Abstract
The invention provides a phase-change steam boiler and application thereof, wherein the boiler comprises a combustion heating unit and a heat exchange unit, and the combustion heating unit is used for supplying heat to the heat exchange unit; the combustion heating unit comprises a combustion furnace, a plurality of combustion heads are arranged on the side wall of the combustion furnace, a water-cooling premixing combustion mechanism is arranged inside the combustion furnace, the water-cooling premixing combustion mechanism comprises a water-cooling bottom pipe horizontally arranged at the bottom of the combustion furnace, a water-cooling tank arranged above the combustion furnace and a plurality of water-cooling wall pipes arranged between the water-cooling bottom pipe and the water-cooling tank, the heat exchange unit comprises a shell which can be arranged on the water-cooling tank, the shell and the water-cooling tank are sealed and in a negative pressure state, a heat exchange pipe is arranged inside the shell, and a water inlet pipe and a water outlet pipe of the heat exchange pipe are respectively arranged. The device is safe, durable and environment-friendly.
Description
Technical Field
The invention relates to the field of industrial equipment, in particular to a phase-change steam boiler and application thereof.
Background
The boiler is a device which utilizes various fuels, electricity or other energy sources to heat the contained liquid to certain parameters (pressure and temperature) and outputs heat energy to the outside. According to the outlet medium, the boiler can be divided into a steam boiler, a hot water boiler and an organic heat carrier boiler. The steam boiler is called as steam boiler, the heat energy released by the traditional steam boiler fuel combustion directly heats the water in the boiler, the water absorbs the heat energy, the temperature rises, and the steam is generated by vaporization. As the boiler water contains impurities such as silt, humus, calcium and magnesium ions, oil content, dissolved oxygen, chloride ions and the like, after water is evaporated, the impurities are left on the heating surface of the boiler, along with the extension of the operation time of the boiler, the impurities are more and more left to finally form scale, the thermal resistance of the scale is more than 20 times that of steel, the heat transfer of the boiler is seriously influenced, the thermal efficiency is reduced, and even the safety of the boiler is influenced, so that accidents such as pipe explosion, bulging, leakage, explosion and the like are caused.
Disclosure of Invention
In view of the above-mentioned disadvantages of the prior art, an object of the present invention is to provide a phase-change steam boiler and a use thereof, which are used to solve the problems of unsafe steam boiler, low efficiency and short service life in the prior art.
To achieve the above and other related objects, the present invention provides a phase-change steam boiler, including a combustion heating unit for supplying heat to a heat exchange unit, and the heat exchange unit;
the combustion heating unit comprises a combustion furnace, a plurality of combustion heads are arranged on the side wall of the combustion furnace, a water-cooling premixed combustion mechanism is arranged in the combustion furnace, the water-cooling premixed combustion mechanism comprises a water-cooling bottom pipe which is horizontally arranged at the bottom of the combustion furnace, a water-cooling tank which is arranged above the combustion furnace and a plurality of water-cooling wall pipes which are arranged between the water-cooling bottom pipe and the water-cooling tank,
the heat exchange unit comprises a shell which can be arranged on the water-cooling pool, the shell is connected with the water-cooling pool in a sealing mode, the shell is in a negative pressure state, the shell is internally provided with a heat exchange pipe, and a water inlet pipe and a water outlet pipe of the heat exchange pipe are respectively arranged on the outer wall of the shell.
Preferably, the combustion furnace further comprises a gas inlet pipe and a variable frequency fan, and the variable frequency fan is used for blowing in gas.
Preferably, the side wall of the combustion furnace is provided with a gas supply chamber, the side wall of the gas supply chamber forms the combustion furnace, namely the side wall of the combustion furnace, the combustion heads are uniformly distributed on the side wall of the gas supply chamber, and the gas enters the combustion heads through a gas inlet pipe for combustion.
Preferably, a flame stabilizing pipe is arranged on the combustion head.
Preferably, the water-cooled pool, the water-cooled bottom tube and the water-cooled wall tube contain water. More preferably, the water is high purity water.
Preferably, a smoke exhaust port is arranged on the side wall of the combustion opposite to the combustion head.
Preferably, the number of the water wall tubes is 2-10.
Preferably, the shell is also provided with a digital vacuum gauge, a vacuum control valve and a leakage-proof valve.
Preferably, a temperature alarm, a pressure alarm and a water level alarm are further arranged in the water cooling tank.
Preferably, the combustion furnace is further provided with a base, and the combustion heating unit is arranged on the base.
Another aspect of the present invention provides the use of the above phase change steam boiler for providing steam.
As described above, the phase change steam boiler of the present invention has the following advantages:
1. in the whole heat transfer process, the flue gas flow has only one return stroke, so that the boiler has a more compact structure and is smaller than a common boiler in volume;
2. by usingThe water-cooling premixed combustion technology has low combustion flame temperature, effectively inhibits the generation of thermal nitrogen oxides, and the initial emission concentration of the boiler nitrogen oxides is lower than 30mg/m3The current environmental protection policy is met;
3. the boiler adopts heat medium water as a heat carrier, absorbs heat released by combustion and then transfers the heat to water supply, thereby effectively avoiding the problem of scale generation caused by directly heating water;
4. the whole pressure of the boiler is negative pressure, so that the danger of expansion, explosion and rupture does not exist, and the boiler is safe and reliable and can be used safely;
5. the normal service life can reach more than 30 years and far exceeds the service life of a common steam boiler for about 15 years;
6. the normal steam boiler discharges sewage every day in the using process, thereby causing the heat loss of the discharged sewage, the boiler of the invention does not need to discharge sewage in the whole life cycle, the heat loss can not be caused, and the heat efficiency of the boiler is improved.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Description of the element reference numerals
1 combustion furnace
101 water cooling pool
102 water wall tube
103 water-cooled bottom pipe
104 smoke outlet
105 burner
106 gas inlet pipe
107 frequency conversion fan
108 gas supply chamber
2 heat exchanger
201 water inlet pipe
202 drainage pipe
203 heat exchange tube
3 base
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure.
Please refer to fig. 1. It should be understood that the structures, ratios, sizes, and the like shown in the drawings and described in the specification are only used for matching with the disclosure of the specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions under which the present invention can be implemented, so that the present invention has no technical significance, and any structural modification, ratio relationship change, or size adjustment should still fall within the scope of the present invention without affecting the efficacy and the achievable purpose of the present invention. In addition, the terms "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for clarity of description, and are not intended to limit the scope of the present invention, and the relative relationship between the terms and the terms is not to be construed as a scope of the present invention.
As shown in fig. 1, the present invention provides a phase-change steam boiler, the boiler comprising a combustion heating unit for supplying heat to a heat exchange unit, and a heat exchange unit; the combustion heating unit includes a combustion furnace 1, and the combustion furnace 1 may be sized as needed, and may generally have a length of 3m, a width of 1m, and a height of 1 m. A plurality of combustion heads 105 are arranged on one side wall of the combustion furnace 1. The side wall of the combustion furnace forms a gas supply chamber 108, the side wall of the combustion supply chamber is the side wall of the combustion furnace, each combustion head is arranged on the side wall of the gas supply chamber 108, and external gas enters the gas supply chamber 108 through a gas inlet pipe 106. In one embodiment, the burners 105 are uniformly distributed on the side wall of the furnace 1. In a preferred embodiment, a flame tube is provided on the burner head 105. The flame stabilizing tube is a tubular body, and the main purpose of the flame stabilizing tube is to ensure more stable combustion of flame.
The combustion furnace 1 is internally provided with a water-cooling premixed combustion mechanism, and the water-cooling premixed combustion mechanism comprises a water-cooling bottom pipe 103 which is horizontally arranged (not strictly required) at the bottom of the combustion furnace 1, a water-cooling tank 101 which is arranged above the combustion furnace, and a plurality of water-cooling wall pipes 102 which are arranged between the water-cooling bottom pipe 103 and the water-cooling tank 101. The water-cooled bottom pipe 103 may be a pipe body disposed on the bottom surface of the combustion furnace 1, and the pipe body may be distributed on the bottom surface of the combustion furnace 1 in a winding manner. The water cooling tank 101 is located at the upper opening of the combustion furnace and is connected with the combustion furnace. The waterwall tubes 102 may be provided in plurality, and generally may be provided with tubes surrounding the inner wall of the furnace, or may be provided with a plurality of tubes located in the furnace. Preferably, the tubes in the furnace are uniformly distributed. The diameter of each of said tubes is generally 5-20 cm. In one embodiment, the number of waterwall tubes 102 is 2-10.
The water cooling pool in the device is formed by the lower part of the shell, and the water cooling pool and the shell can be integrally formed.
The heat exchange unit comprises a shell which can be arranged on the water-cooling pool, the shell is connected with the water-cooling pool in a sealing mode, the interior of the shell is in a negative pressure state, the interior of the shell is provided with heat exchange tubes, and a 201 water inlet tube and a 202 water outlet of each heat exchange tube are respectively arranged on the outer wall of the shell. The heat exchange tubes may be serpentine disposed within the housing.
In an embodiment, the combustion furnace 1 further includes a gas inlet pipe 106 and a variable frequency fan 107, and the variable frequency fan is used for blowing in gas.
In one embodiment, the water-cooled basin 101, the water-cooled bottom tube 103, and the water-cooled wall tubes 102 contain water. The heat medium water is high-purity water which is subjected to special treatment such as deoxidation and descaling, the water is filled once before the boiler leaves a factory, and the water is circulated in the boiler in a closed manner (vaporization → condensation → vaporization) in use without increasing or reducing, and does not need to be supplemented or replaced in the service life of the boiler. The heat medium water is injected in advance when the boiler is manufactured, the inside of the boiler can not scale and corrode, the normal service life can reach more than 30 years, and safety accidents such as reduction of the thermal efficiency of the boiler, tube explosion and the like caused by scale formation on a heating surface are avoided. After the heat of water absorption high temperature cigarette hot media gas, the temperature risees, vaporize gradually, the steam that the vaporization produced gathers toward boiler upper portion space (negative pressure steam chamber), because the negative pressure steam chamber has arranged a large amount of condenser pipes, the heat of steam is absorbed by the condenser pipe, the steam heat will liquefy after being absorbed, the steam phase transition becomes the hot media water, the hot media water is because the action of gravity, the water wall pipe drops to again, absorb the high temperature heat that the burning produced once more, vaporize once more, release heat once more at the negative pressure steam chamber after the vaporization, so reciprocating cycle.
In one embodiment, a smoke vent 104 is provided on the side opposite the burner head. The device adopts a water-cooling premixing combustion technology, gas and air are completely premixed according to a certain proportion, short combustion flame is adopted, the central temperature of the flame is effectively reduced, a large furnace pipe technology is adopted, the radiation heating area in the furnace is effectively increased, the generation of thermal nitrogen oxide is inhibited, the device accords with the current policy of environmental protection on low-nitrogen modification of the boiler, and the initial emission concentration of the nitrogen oxide is lower than 30mg/m3。
In one embodiment, the housing is further provided with a digital vacuum gauge, a vacuum control valve and a leakage prevention valve, and the main purpose of the leakage prevention valve is to prevent the vacuum state of the housing from being damaged.
In an embodiment, still be equipped with temperature alarm, pressure alarm and water level alarm in the water-cooling pond, its main objective is in order to detect the volume of the water in casing and the body, avoids leading to water to reveal because of the accident, and the staff does not discover, and then causes danger.
In an embodiment, the combustion furnace is further provided with a base 3, and the combustion heating unit is arranged on the base 3, so that the installation of the device is more convenient, and the installation of the device is more stable.
In one embodiment, the device is further provided with an ignition program control and flameout protection device.
In one embodiment, the high-grade centrifugal glass wool is adopted for multi-layer heat preservation, heat loss is less, and the whole structure is square.
Therefore, the invention effectively overcomes various defects in the prior art and has high industrial utilization value.
The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (10)
1. A phase change steam boiler, characterized in that said phase change steam boiler comprises at least:
the combustion heating unit is used for supplying heat to the heat exchange unit;
the combustion heating unit comprises a combustion furnace, a plurality of combustion heads are arranged on the side wall of the combustion furnace, a water-cooling premixed combustion mechanism is arranged in the combustion furnace, the water-cooling premixed combustion mechanism comprises a water-cooling bottom pipe which is horizontally arranged at the bottom of the combustion furnace, a water-cooling tank which is arranged above the combustion furnace and a plurality of water-cooling wall pipes which are arranged between the water-cooling bottom pipe and the water-cooling tank,
the heat exchange unit comprises a shell arranged on the water-cooling pool, the shell is connected with the water-cooling pool in a sealing mode, the shell is in a negative pressure state, the shell is internally provided with heat exchange tubes, and a water inlet pipe and a water outlet pipe of each heat exchange tube are respectively arranged on the outer wall of the shell.
2. A phase change steam boiler according to claim 1, characterized in that: the combustion furnace also comprises a gas inlet pipe and a variable frequency fan, wherein the variable frequency fan is used for blowing in gas.
3. A phase change steam boiler according to claim 1, characterized in that: the side wall of the combustion furnace is provided with a gas supply chamber, the side wall of the gas supply chamber forms the combustion furnace, namely the side wall of the combustion furnace, the combustion heads are uniformly distributed on the side wall of the gas supply chamber, and gas enters the combustion heads through a gas inlet pipe for combustion.
4. A phase change steam boiler according to claim 1, characterized in that: and a flame stabilizing pipe is arranged on the combustion head.
5. A phase change steam boiler according to claim 1, characterized in that: the water-cooling pool, the water-cooling bottom tube and the water-cooling wall tube contain water.
6. A phase change steam boiler according to claim 1, characterized in that: the number of the water wall tubes is 2-10.
7. A phase change steam boiler according to claim 1, characterized in that: and a smoke outlet is arranged on the side wall of the combustion furnace at the side opposite to the combustion head.
8. A phase change steam boiler according to claim 1, characterized in that: the shell is also provided with a digital vacuum gauge, a vacuum control valve and a leakage-proof valve.
9. A phase change steam boiler according to claim 1, characterized in that: and a temperature alarm, a pressure alarm and a water level alarm are also arranged in the water cooling tank.
10. Use of a phase change steam boiler according to any of claims 1-9 for providing steam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010371256.9A CN111425841A (en) | 2020-05-06 | 2020-05-06 | Phase-change steam boiler and application |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010371256.9A CN111425841A (en) | 2020-05-06 | 2020-05-06 | Phase-change steam boiler and application |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111425841A true CN111425841A (en) | 2020-07-17 |
Family
ID=71558601
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010371256.9A Pending CN111425841A (en) | 2020-05-06 | 2020-05-06 | Phase-change steam boiler and application |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111425841A (en) |
-
2020
- 2020-05-06 CN CN202010371256.9A patent/CN111425841A/en active Pending
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