CN113959118A - A lead cold cylinder for coal fired boiler rapid cooling uses - Google Patents
A lead cold cylinder for coal fired boiler rapid cooling uses Download PDFInfo
- Publication number
- CN113959118A CN113959118A CN202111429737.1A CN202111429737A CN113959118A CN 113959118 A CN113959118 A CN 113959118A CN 202111429737 A CN202111429737 A CN 202111429737A CN 113959118 A CN113959118 A CN 113959118A
- Authority
- CN
- China
- Prior art keywords
- cold
- guide cylinder
- coal
- fired boiler
- cooling
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000001816 cooling Methods 0.000 title claims abstract description 27
- 239000003245 coal Substances 0.000 title claims description 3
- 239000007788 liquid Substances 0.000 claims abstract description 20
- 238000002485 combustion reaction Methods 0.000 claims abstract description 9
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 52
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 26
- 239000001569 carbon dioxide Substances 0.000 claims description 21
- 239000012530 fluid Substances 0.000 claims description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical group [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims 1
- 229910052802 copper Inorganic materials 0.000 claims 1
- 239000010949 copper Substances 0.000 claims 1
- 239000000463 material Substances 0.000 claims 1
- 238000012544 monitoring process Methods 0.000 claims 1
- 230000001105 regulatory effect Effects 0.000 claims 1
- 238000005057 refrigeration Methods 0.000 abstract description 3
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000004202 carbamide Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- 235000017550 sodium carbonate Nutrition 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B39/00—Evaporators; Condensers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B9/00—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point
- F25B9/002—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point characterised by the refrigerant
- F25B9/008—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point characterised by the refrigerant the refrigerant being carbon dioxide
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
- F25D17/02—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating liquids, e.g. brine
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D7/02—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being helically coiled
- F28D7/024—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being helically coiled the conduits of only one medium being helically coiled tubes, the coils having a cylindrical configuration
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Chemical Kinetics & Catalysis (AREA)
Abstract
The invention discloses a cold guide cylinder for quickly cooling a coal-fired boiler, and relates to the field of boiler cooling and refrigeration. The liquid CO2 storage and output pipeline is connected outside the combustion chamber of the coal-fired boiler, and the output pipeline is provided with a throttle valve and is connected with a cold coil in the combustion chamber. The cold coil is positioned in the cold guide cylinder, and the output end of the cold coil is connected to an external gas collecting pipe and finally introduced into a CO2 collecting device. Through using this cold cylinder device of leading, will realize the rapid cooling in the boiler, solved the problem of potential safety hazard and equipment damage because of the steam high temperature causes.
Description
Technical Field
The invention discloses a cold guide cylinder for quickly cooling a coal-fired boiler, relates to the field of safety protection and cooling of the coal-fired boiler, and particularly relates to a novel refrigeration system using liquid carbon dioxide as a working medium.
Background
Liquid carbon dioxide refers to the liquefaction of carbon dioxide gas to a liquid form at high pressure and low temperature. Liquid carbon dioxide is a refrigerant and can be used for preserving food and artificial rainfall. It is also an industrial raw material, and can be used for preparing soda ash, urea and soda water. CO2 has a critical pressure: 7.39 MPa and critical temperature: 31.06 ℃. When neither the temperature nor the pressure exceeds the critical point, the CO2 may be liquefied by pressurization or depressurization. When the pressure or temperature exceeds a critical value, CO2 in this state is called supercritical CO2 fluid, which is neither solid nor liquid. Because the temperature is high between the boiler oxygen-eliminating device, governing valve executor and inside electronic components damage frequently, the fault rate is high, and maintenance personal maintenance efficiency is low, often because of high temperature is uncomfortable, need have a rest, then overhauls again, has brought very big inconvenience for maintenance personal work.
Disclosure of Invention
The invention aims to provide a cold guide cylinder for quickly cooling a coal-fired boiler, which takes liquid carbon dioxide as a refrigerating working medium, fully utilizes the vaporization characteristic of the liquid carbon dioxide and achieves good cooling effect of a hearth in the boiler.
In order to achieve the purpose, the invention relates to a cooling guide cylinder for quickly cooling a coal-fired boiler, which comprises: liquid carbon dioxide reservoir, communicating pipe, control valve, cold coil pipe and gas collecting pipe. The cold coil is positioned in the cold guide cylinder and is connected with the inner wall of the cold guide cylinder through a buckle and a connecting buckle; the inner wall of the cold guide cylinder is a cold guide plate; the cold coil pipe is in close contact with the cold guide plate surface, so that the cold guide efficiency is improved. After the liquid carbon dioxide enters the cold coil, the outer wall of the cold guide plate absorbs high-temperature heat generated by combustion of the inner hearth in advance, and the high-temperature heat is transmitted to the inside of the cold guide cylinder through the cold guide plate. After flowing in through the cold coil, the liquid carbon dioxide is rapidly vaporized at the moment of contacting with the cold guide plate to generate heat absorption refrigeration effect, and the cold guide plate and the outer wall of the cold guide cylinder are rapidly cooled. Preferably: the inner hearth wall above the cold guide cylinder can be additionally provided with an air supply device, and the low temperature on the surface of the cold guide cylinder is blown to the hearth by cold air.
The temperature in the cold coil pipe is gradually increased, and the formed hot carbon dioxide gas is finally output to an external carbon dioxide collecting device through a circulating pump and is stored through the steps of drying and the like, so that the liquid carbon dioxide is convenient to manufacture again.
Drawings
Fig. 1 is a schematic view of a cold guide cylinder for rapid cooling of a coal-fired boiler.
Fig. 2 is a schematic diagram of the internal layering of the cold guiding cylinder.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, in an embodiment of the present invention, fig. 1 is a schematic view of a cooling guide cylinder for rapidly cooling a coal-fired boiler, in which the cooling guide cylinder (2) is located at an upper end of a combustion area inside a combustion chamber (16) of the coal-fired boiler, and an outside of the cooling guide cylinder is connected to a liquid carbon dioxide reservoir (7) through a connection pipe.
Referring to fig. 1, the liquid carbon dioxide reservoir is externally connected with a fluid output pipeline (17) on which a throttle valve (8) is installed, the inner wall of the pipeline is provided with an insulating layer, and the output pipeline is connected into a cooling guide cylinder (2) of an inner hearth.
Referring to fig. 2, the cold coil (3) is located in the cold guiding cylinder, and the bent pipeline thereof is connected with the inner wall of the cold guiding cylinder through a buckle (13) and a connecting buckle (14); the inner wall of the cold guide cylinder is a cold guide plate (12).
Referring to fig. 1, a gas collecting pipe (15) is connected to an external carbon dioxide gas collecting head (9) and a gas storage tank (11); the carbon dioxide gas collecting head is connected with the gas storage pool (11) through a control valve and a flow meter (10) in sequence.
Claims (6)
1. A lead cold cylinder for coal fired boiler rapid cooling uses which characterized in that: the cold guide cylinder (2) is positioned at the upper end of a combustion area in a combustion chamber (16) of the coal-fired boiler, and the outside of the cold guide cylinder is connected with a liquid carbon dioxide storage (7) through a connecting pipeline; the liquid carbon dioxide storage comprises a liquid inlet, a storage tank, a liquid outlet, an exhaust port and the like; and is provided with a temperature monitoring system, a pressure measuring and calculating device and a liquid level monitor.
2. The cooling guide cylinder for the rapid cooling of the coal-fired boiler according to claim 1, characterized in that: the liquid carbon dioxide reservoir is externally connected with a fluid output pipeline (17), a throttle valve (8) is installed on the fluid output pipeline, the inner wall of the pipeline is provided with a heat-insulating layer, and a heat-insulating pad material is wrapped outside the pipeline; the output pipeline is connected into a cold guide cylinder (2) of the inner hearth.
3. The cooling guide cylinder for the rapid cooling of the coal-fired boiler according to claim 1, characterized in that: the cold coil (3) is positioned in the cold guide cylinder, and the bent pipeline of the cold coil is connected with the inner wall of the cold guide cylinder through a buckle (13) and a connecting buckle (14); the inner wall of the cold guide cylinder is a cold guide plate (12); the cold coil pipe is in close contact with the cold guide plate surface, so that the cold guide efficiency is improved.
4. The cold guide cylinder for the rapid cooling of the coal-fired boiler according to claim 1, wherein the cold coil of the cold guide cylinder is connected with a circulating pump (5), and the outer wall of the cold guide cylinder is a copper thin plate.
5. The cooling guide cylinder for the rapid cooling of the coal-fired boiler according to claim 1, characterized in that: the left input port of the cold coil is welded on the left side wall of the combustion chamber, and the right output port of the cold coil is welded on the right side wall of the combustion chamber; the outlet of the cold coil is provided with a regulating valve, and an external gas collecting pipe (15) is used for introducing high-temperature CO2 recycled gas formed by circulation.
6. The cooling guide cylinder for the rapid cooling of the coal-fired boiler according to claim 1, characterized in that: the gas collecting pipe (15) is connected with an external carbon dioxide gas collecting head (9) and a gas storage pool (11); the carbon dioxide gas collecting head is connected with the gas storage pool (11) through a control valve and a flow meter (10) in sequence.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111429737.1A CN113959118A (en) | 2021-11-29 | 2021-11-29 | A lead cold cylinder for coal fired boiler rapid cooling uses |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111429737.1A CN113959118A (en) | 2021-11-29 | 2021-11-29 | A lead cold cylinder for coal fired boiler rapid cooling uses |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113959118A true CN113959118A (en) | 2022-01-21 |
Family
ID=79472360
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111429737.1A Pending CN113959118A (en) | 2021-11-29 | 2021-11-29 | A lead cold cylinder for coal fired boiler rapid cooling uses |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113959118A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0828834A (en) * | 1994-07-15 | 1996-02-02 | Kurabo Ind Ltd | Incinerator with water wall |
| JP2015218979A (en) * | 2014-05-20 | 2015-12-07 | 宇部興産機械株式会社 | Steam boiler device |
| CN110869675A (en) * | 2017-04-20 | 2020-03-06 | 布斯特赫特公司 | Thermal CO2 boiler and thermocompressor |
| CN111156725A (en) * | 2020-01-30 | 2020-05-15 | 洛阳麦透锋科技发展有限公司 | Carbon dioxide phase-change circulation refrigeration system and refrigeration method thereof |
-
2021
- 2021-11-29 CN CN202111429737.1A patent/CN113959118A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0828834A (en) * | 1994-07-15 | 1996-02-02 | Kurabo Ind Ltd | Incinerator with water wall |
| JP2015218979A (en) * | 2014-05-20 | 2015-12-07 | 宇部興産機械株式会社 | Steam boiler device |
| CN110869675A (en) * | 2017-04-20 | 2020-03-06 | 布斯特赫特公司 | Thermal CO2 boiler and thermocompressor |
| CN111156725A (en) * | 2020-01-30 | 2020-05-15 | 洛阳麦透锋科技发展有限公司 | Carbon dioxide phase-change circulation refrigeration system and refrigeration method thereof |
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