CN212777276U - Chemical heat supply device of circulating fluidized bed boiler - Google Patents
Chemical heat supply device of circulating fluidized bed boiler Download PDFInfo
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- CN212777276U CN212777276U CN202021174312.1U CN202021174312U CN212777276U CN 212777276 U CN212777276 U CN 212777276U CN 202021174312 U CN202021174312 U CN 202021174312U CN 212777276 U CN212777276 U CN 212777276U
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- fluidized bed
- circulating fluidized
- bed boiler
- flue gas
- flue
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Abstract
The utility model discloses a chemical industry heating device of circulating fluidized bed boiler has solved the high problem of current chemical industry heating device heat supply energy supply equipment investment and running cost. The technical scheme includes that the circulating fluidized bed boiler comprises a circulating fluidized bed boiler, wherein a flue gas outlet of the circulating fluidized bed boiler is respectively connected with a flue gas inlet of an economizer and a flue gas inlet of a chemical device through a flow distribution tee joint through a flue, and flue gas adjusting baffles are arranged on the flue of the flow distribution tee joint connected with the economizer and the flue of the flow distribution tee joint connected with the chemical device; the lower section of the circulating fluidized bed boiler is provided with a limestone feeding port, and the limestone feeding port is connected with a limestone feeding system. The utility model discloses the system is simple, can provide hot-blast and steam that satisfies the requirement for the chemical plant device simultaneously, and hot-blast temperature range is nimble adjustable, equipment investment or running cost are low.
Description
Technical Field
The utility model relates to a chemical industry field, specific chemical industry heating device of circulating fluidized bed boiler that says so.
Background
In large-scale petrochemical industry project, chemical plant needs a large amount of steam and high temperature hot-blast, provides steam for chemical plant through setting up the boiler at present more, provides hot-blast for chemical plant through setting up hot-blast furnace or drying furnace alone. The boiler fuel is coal, and the drying furnace adopts fuel gas and natural gas, so that the cost of the natural gas is high. The simultaneous arrangement of a boiler and a hot blast stove or a drying furnace in a factory not only increases one-time investment and makes the system more complex, but also increases the operation and maintenance cost.
Disclosure of Invention
The utility model aims at solving the technical problem, provide a simple system, can provide the hot-blast and steam that satisfy the demands for the chemical plant simultaneously, hot-blast temperature range is nimble adjustable, equipment investment or the low chemical industry heating device of circulating fluidized bed boiler of running cost.
The technical scheme includes that the circulating fluidized bed boiler comprises a circulating fluidized bed boiler, wherein a flue gas outlet of the circulating fluidized bed boiler is respectively connected with a flue gas inlet of an economizer and a flue gas inlet of a chemical device through a flow distribution tee joint through a flue, and flue gas adjusting baffles are arranged on the flue of the flow distribution tee joint connected with the economizer and the flue of the flow distribution tee joint connected with the chemical device; the lower section of the circulating fluidized bed boiler is provided with a limestone feeding port, and the limestone feeding port is connected with a limestone feeding system.
And a steam outlet of the circulating fluidized bed boiler is connected with a steam turbine through a steam pipeline and used for supplying energy to the chemical device.
The flue gas outlet of the circulating fluidized bed boiler is connected with the shunt tee joint through the cyclone separator, and the ash residue outlet at the bottom of the cyclone separator is connected with the ash residue inlet at the lower section of the circulating fluidized bed boiler.
Has the advantages that:
(1) the flue gas of the circulating fluidized bed boiler is respectively introduced into a chemical device and an economizer as required by utilizing the shunt tee joint, the flue gas adjusting baffle can adjust the amount of the flue gas entering the chemical device and the economizer, and the temperature of the flue gas led out to the chemical device can be skillfully controlled to be 300-900 ℃ by controlling the arrangement positions of the shunt tee joint on a flue gas outlet and an economizer flue of the circulating fluidized bed boiler; the limestone adding system is used for adding limestone into the circulating fluidized bed boiler to reduce SO in the flue gas2The concentration meets the hot air requirements of different ranges of chemical devices.
(2) The circulating fluidized bed boiler can produce high-temperature high-pressure steam, and the produced steam can be sent into a turbine drive turbine or generate electricity, for the energy supply of the chemical device.
(3) The cyclone separator is arranged to remove dust from the flue gas discharged from the circulating fluidized bed boiler, so that the dust content of the flue gas is further reduced, and the hot air requirement of a chemical device is met.
(4) The utility model discloses simple structure can provide hot-blast and steam for chemical plant simultaneously, has saved investment and working costs, and the hot-blast temperature coverage who provides is wide, SO2The concentration is low.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
The system comprises a circulating fluidized bed boiler 1, a circulating fluidized bed boiler 2, a flow dividing tee joint 3, a first flue gas adjusting baffle 4, a chemical device 5, an economizer 6, a steam pipeline 7, a steam turbine 8, a limestone adding system 9, a cyclone separator 10 and a second flue gas adjusting baffle.
Detailed Description
The invention will be further explained with reference to the drawings:
referring to fig. 1, a flue gas outlet of a circulating fluidized bed boiler 1 is respectively connected with a flue gas inlet of an economizer 5 and a flue gas inlet of a chemical device 4 through a flue by a cyclone separator 9 and a shunt tee 2, wherein a first flue gas adjusting baffle 3 is arranged on the flue of the shunt tee 2 connected with the economizer 5, and a second flue gas adjusting baffle 10 is arranged on the flue of the shunt tee 2 connected with the chemical device 4; a limestone feeding port is arranged at the lower section of the circulating fluidized bed boiler 1 and is connected with a limestone feeding system 8, and an ash residue outlet at the bottom of the cyclone separator 9 is connected with an ash residue inlet at the lower section of the circulating fluidized bed boiler.
And a steam outlet of the circulating fluidized bed boiler 1 is connected with a steam turbine 7 through a steam pipeline 6, drives a compressor or generates electricity, and is used for supplying energy to the chemical device.
The process comprises the following steps:
the flue gas generated by the circulating fluidized bed boiler 1 is dedusted by the cyclone separator 9, the dedusted flue gas is divided into two parts by the shunt tee 2, one part is fed into the economizer 5 after the flue gas amount is adjusted by the first flue gas adjusting baffle 3, and the other part is fed into the chemical device 4 after the flue gas amount is adjusted by the second flue gas adjusting baffle 10; the ash slag separated from the bottom of the cyclone separator 9 is returned to the circulating fluidized bed boiler 1 for combustion through an ash slag inlet, and meanwhile, the limestone of the limestone adding system 8 is fed into the circulating fluidized bed boiler 1 through a limestone adding inlet to reduce SO in the flue gas2Concentration; the circulating fluidized bed boiler 1 also simultaneously produces high temperature and high pressure steam, which is fed via a steam line 6 to a steam turbine 7 for powering the chemical plant.
Claims (3)
1. A chemical heating device of a circulating fluidized bed boiler comprises the circulating fluidized bed boiler, and is characterized in that a flue gas outlet of the circulating fluidized bed boiler is respectively connected with a flue gas inlet of a coal economizer and a flue gas inlet of a chemical device through a flue by a shunt tee joint, wherein flue gas adjusting baffles are arranged on the flue of the shunt tee joint connected with the coal economizer and the flue of the shunt tee joint connected with the chemical device; the lower section of the circulating fluidized bed boiler is provided with a limestone feeding port, and the limestone feeding port is connected with a limestone feeding system.
2. A chemical heating apparatus of a circulating fluidized bed boiler according to claim 1, wherein a steam outlet of the circulating fluidized bed boiler is connected to a steam turbine through a steam pipe for supplying energy to the chemical apparatus.
3. A chemical heating apparatus of a circulating fluidized bed boiler according to claim 1 or 2, wherein a flue gas outlet of the circulating fluidized bed boiler is connected to a three-way bypass pipe through a cyclone, and an ash outlet at the bottom of the cyclone is connected to an ash inlet at the lower section of the circulating fluidized bed boiler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021174312.1U CN212777276U (en) | 2020-06-22 | 2020-06-22 | Chemical heat supply device of circulating fluidized bed boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021174312.1U CN212777276U (en) | 2020-06-22 | 2020-06-22 | Chemical heat supply device of circulating fluidized bed boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212777276U true CN212777276U (en) | 2021-03-23 |
Family
ID=75075039
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021174312.1U Active CN212777276U (en) | 2020-06-22 | 2020-06-22 | Chemical heat supply device of circulating fluidized bed boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212777276U (en) |
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2020
- 2020-06-22 CN CN202021174312.1U patent/CN212777276U/en active Active
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