CN221036854U - Waste heat recovery system of waste heat boiler - Google Patents
Waste heat recovery system of waste heat boiler Download PDFInfo
- Publication number
- CN221036854U CN221036854U CN202322978131.4U CN202322978131U CN221036854U CN 221036854 U CN221036854 U CN 221036854U CN 202322978131 U CN202322978131 U CN 202322978131U CN 221036854 U CN221036854 U CN 221036854U
- Authority
- CN
- China
- Prior art keywords
- steam
- communicated
- waste heat
- pipe
- water
- 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.)
- Active
Links
- 239000002918 waste heat Substances 0.000 title claims abstract description 41
- 238000011084 recovery Methods 0.000 title claims abstract description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 55
- 238000005070 sampling Methods 0.000 claims abstract description 14
- 230000001502 supplementing effect Effects 0.000 claims abstract description 8
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 15
- 239000003546 flue gas Substances 0.000 claims description 15
- 239000007788 liquid Substances 0.000 claims description 10
- 239000007789 gas Substances 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 abstract description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 239000002699 waste material Substances 0.000 abstract description 5
- 238000001514 detection method Methods 0.000 abstract description 4
- 238000001816 cooling Methods 0.000 abstract description 3
- 239000000779 smoke Substances 0.000 description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 3
- 229910052710 silicon Inorganic materials 0.000 description 3
- 239000010703 silicon Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
Landscapes
- Control Of Steam Boilers And Waste-Gas Boilers (AREA)
Abstract
The utility model discloses a waste heat recovery system of a waste heat boiler, which comprises a steam branch pipe, wherein one end of the steam branch pipe is communicated with a steam main pipe through a three-way valve, the other end of the steam branch pipe is communicated with a steam inlet of a first heat exchanger, a steam condensate outlet of the first heat exchanger is communicated with a water tank through a pipeline, an outlet of the water tank is communicated with a water inlet of the first heat exchanger through a circulating pump, and the water tank is communicated with a water supplementing pipe; the steam branch pipe is provided with a temperature and pressure reducing device. The advantages are that: in the production process, when the water quality detection of cooling and sampling is unqualified, the three-way valve is switched, so that the steam exhausted by the waste heat boiler enters the steam branch pipe, is reduced in pressure and temperature through the temperature and pressure reducing device, is fed into the first heat exchanger, heats circulating water, is used for heating or heating areas of factories, realizes the heat recovery and utilization of the steam, and effectively avoids waste.
Description
Technical field:
The utility model relates to the technical field of industrial silicon smelting production equipment, in particular to a waste heat recovery system of a waste heat boiler.
The background technology is as follows:
In the production process of smelting industrial silicon, the submerged arc furnace generates a large amount of flue gas, the flue gas is introduced into a waste heat boiler to exchange heat with the fed water to generate hot steam for a steam turbine to generate power, and the flue gas subjected to heat exchange is directly exhausted; in the use process of the waste heat boiler, after overhauling or restarting the boiler, impurities such as iron, silicon, sodium and the like are mixed into waste heat boiler water, so that a plurality of parameters such as water quality conductivity and the like are unqualified, a large amount of generated unqualified steam is sent into a steam turbine, equipment is damaged, and therefore, after the unqualified steam is detected in the production process, only all the steam can be discharged until new qualified steam is generated, and steam heat energy is wasted; in addition, the temperature of the flue gas waste heat discharged by the waste heat boiler reaches 120-160 ℃, and heat waste is caused by direct emptying.
The utility model comprises the following steps:
The utility model aims to provide a waste heat recovery system of a waste heat boiler, which is favorable for realizing effective recovery of heat energy and avoiding energy waste.
The utility model is implemented by the following technical scheme: the waste heat recovery system of the waste heat boiler comprises the waste heat boiler and a main steam pipe communicated with a steam turbine, wherein a steam sampling cooler is arranged on the main steam pipe in a communicated manner through a sampling pipe, and an on-off valve is arranged on the sampling pipe; the system also comprises a steam branch pipe, wherein one end of the steam branch pipe is communicated with the steam main pipe through a three-way valve, the other end of the steam branch pipe is communicated with a steam inlet of the first heat exchanger, a steam condensate outlet of the first heat exchanger is communicated with a water tank through a pipeline, an outlet of the water tank is communicated with a water inlet of the first heat exchanger through a circulating pump, and the water tank is communicated with a water supplementing pipe; and the steam branch pipe is provided with a temperature and pressure reducing device.
Further, a liquid level sensor is installed in the water tank, an electric valve is installed on the water supplementing pipe, the liquid level sensor is electrically connected with the input end of the controller, and the output end of the controller is electrically connected with the electric valve.
Further, a smoke outlet of the waste heat boiler is communicated with an inlet of a smoke pipeline, an outlet of the smoke pipeline is communicated with a gas inlet of the second heat exchanger, and a gas outlet of the smoke pipeline is communicated with an inlet of the induced draft fan; and the outlet of the circulating pump is communicated with the water inlet of the second heat exchanger through a water pipe.
The utility model has the advantages that: in the production process, when the water quality detection of cooling and sampling is unqualified, the three-way valve is switched, so that the steam exhausted by the waste heat boiler enters the steam branch pipe, is reduced in pressure and temperature through the temperature and pressure reducing device, is fed into the first heat exchanger, heats circulating water, is used for heating or heating areas of factories, realizes the heat recovery and utilization of the steam, and effectively avoids waste.
And the flue gas exhausted by the waste heat boiler is sent into the second heat exchanger to heat water under the action of the induced draft fan, and the heated hot water is used for heating or in-plant use, so that the recovery of flue gas waste heat is realized, and the recovery of heat energy is further realized.
Description of the drawings:
Fig. 1 is a schematic structural view of the present utility model.
The components in the drawings are marked as follows: the system comprises a waste heat boiler 1, a steam turbine 2, a steam main pipe 3, a sampling pipe 4, a steam sampling cooler 5, an on-off valve 6, a steam branch pipe 7, a three-way valve 8, a first heat exchanger 9, a water tank 10, a circulating pump 11, a water supplementing pipe 12, a temperature and pressure reducing device 13, a liquid level sensor 14, an electric valve 15, a controller 16, a flue gas pipeline 17, a second heat exchanger 18, an induced draft fan 19 and a water pipe 20.
The specific embodiment is as follows:
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
In the description of the present utility model, it should be noted that the terms "center," "upper," "lower," "front," "rear," "top," "bottom," "left," "right," "vertical," "horizontal," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate description of the present utility model and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
As shown in fig. 1, the embodiment provides a waste heat recovery system of a waste heat boiler, which comprises a waste heat boiler 1 and a main steam pipe 3 communicated with a steam turbine 2, wherein a steam sampling cooler 5 is installed on the main steam pipe 3 through a sampling pipe 4, and an on-off valve 6 is installed on the sampling pipe 4; in the normal operation process, the steam discharged by the waste heat boiler 1 is sent into the steam turbine 2 through the main steam pipe 3, the on-off valve 6 is opened, the steam with the temperature of more than 400 ℃ discharged by the waste heat boiler 1 is cooled to water with the temperature of 30-40 ℃, and the detection is carried out after the safe sampling of operators.
The device also comprises a steam branch pipe 7, one end of the steam branch pipe 7 is communicated with the steam main pipe 3 through a three-way valve 8, the other end of the steam branch pipe 7 is communicated with a steam inlet of the first heat exchanger 9, a temperature and pressure reducing device 13 is arranged on the steam branch pipe 7, the temperature and pressure reducing device 13 is known existing equipment in the field, and the specific structure is not repeated here; in the production process, when the water quality detection of the cooling sample is unqualified, the three-way valve 8 is switched, so that the steam discharged by the waste heat boiler 1 enters the steam branch pipe 7; the pressure of the steam discharged from the waste heat boiler 1 is up to 3.5 megapascals, the temperature is up to more than 400 ℃, the steam is fed into the first heat exchanger 9 of the low-pressure equipment after being reduced in pressure and temperature by the temperature and pressure reducing device 13 in order to ensure safe production, the circulating water is heated for heating or hot area use of a factory, the heat recovery and the utilization of the steam are realized, and the waste is effectively avoided.
The steam condensate outlet of the first heat exchanger 9 is communicated with the water tank 10 through a pipeline, the outlet of the water tank 10 is communicated with the water inlet of the first heat exchanger 9 through the circulating pump 11, and water after steam condensation in the first heat exchanger 9 is recovered into the water tank 10 and is recycled through the circulating pump 11; the water tank 10 is communicated with the water supplementing pipe 12, a liquid level sensor 14 is arranged in the water tank 10, an electric valve 15 is arranged on the water supplementing pipe 12, the liquid level sensor 14 is electrically connected with the input end of the controller 16, and the output end of the controller 16 is electrically connected with the electric valve 15; the liquid level in the water tank 10 is monitored in real time through the liquid level sensor 14 and fed back to the controller 16, when the liquid level is reduced to a set lower limit value, the electric valve 15 is controlled to be opened through the controller 16, and circulating water is fed into the water tank 10 through the water feeding pipe 12.
The exhaust port of the waste heat boiler 1 is communicated with the inlet of a flue gas pipeline 17, the outlet of the flue gas pipeline 17 is communicated with the gas inlet of a second heat exchanger 18, and the gas outlet of the flue gas pipeline 17 is communicated with the inlet of an induced draft fan 19; the outlet of the circulating pump 11 is communicated with the water inlet of the second heat exchanger 18 through a water pipe 20; the flue gas discharged by the waste heat boiler 1 is sent into the second heat exchanger 18 to heat water under the action of the induced draft fan 19, and the heated hot water is used for heating or in-plant use, so that the recovery of flue gas waste heat is realized, and the recovery of heat energy is further realized.
The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.
Claims (3)
1. The waste heat recovery system of the waste heat boiler comprises the waste heat boiler and a main steam pipe communicated with a steam turbine, wherein a steam sampling cooler is arranged on the main steam pipe in a communicated manner through a sampling pipe, and an on-off valve is arranged on the sampling pipe;
The device is characterized by further comprising a steam branch pipe, wherein one end of the steam branch pipe is communicated with the steam main pipe through a three-way valve, the other end of the steam branch pipe is communicated with a steam inlet of a first heat exchanger, a steam condensate outlet of the first heat exchanger is communicated with a water tank through a pipeline, an outlet of the water tank is communicated with a water inlet of the first heat exchanger through a circulating pump, and the water tank is communicated with a water supplementing pipe; and the steam branch pipe is provided with a temperature and pressure reducing device.
2. The waste heat recovery system of a waste heat boiler according to claim 1, wherein a liquid level sensor is installed in the water tank, an electric valve is installed on the water supplementing pipe, the liquid level sensor is electrically connected with an input end of a controller, and an output end of the controller is electrically connected with the electric valve.
3. The waste heat recovery system of claim 1, wherein the exhaust port of the waste heat boiler is in communication with an inlet of a flue gas duct, an outlet of the flue gas duct is in communication with a gas inlet of the second heat exchanger, and a gas outlet of the flue gas duct is in communication with an inlet of the induced draft fan; and the outlet of the circulating pump is communicated with the water inlet of the second heat exchanger through a water pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322978131.4U CN221036854U (en) | 2023-11-03 | 2023-11-03 | Waste heat recovery system of waste heat boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322978131.4U CN221036854U (en) | 2023-11-03 | 2023-11-03 | Waste heat recovery system of waste heat boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221036854U true CN221036854U (en) | 2024-05-28 |
Family
ID=91168433
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322978131.4U Active CN221036854U (en) | 2023-11-03 | 2023-11-03 | Waste heat recovery system of waste heat boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221036854U (en) |
-
2023
- 2023-11-03 CN CN202322978131.4U patent/CN221036854U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102242647A (en) | Waste heat power generation system of multiple glass kilns | |
| CN101639211A (en) | Float glass melting furnace parallel connection waste heat power generation system | |
| CN215063963U (en) | Electrophoresis drying furnace flue gas waste heat recovery device | |
| CN221036854U (en) | Waste heat recovery system of waste heat boiler | |
| CN210532424U (en) | Low-temperature waste heat utilization system | |
| CN204874563U (en) | Towards sediment exhaust steam waste heat heating system | |
| CN207527620U (en) | Gas-steam boiler flue gas waste heat recovery apparatus | |
| CN202171240U (en) | Waste heat boiler of glass annealing kiln | |
| CN212961495U (en) | Water circulation system for boiler | |
| CN211502980U (en) | Heating device capable of cooling reaction liquid and recycling waste heat | |
| CN205014337U (en) | A water supply equipment for improving waste heat power generation system heat exchange efficiency | |
| CN212692569U (en) | Dry quenching air cooling condensing system | |
| CN212029473U (en) | Condensate water recovery transformation device | |
| CN210425085U (en) | Flue gas heat energy recovery device and system of alkali recovery boiler | |
| CN210638535U (en) | High-temperature industrial waste residue waste heat power generation system | |
| CN212081211U (en) | Boiler sampling heat energy recycling system | |
| CN214842698U (en) | Waste heat recovery system for sand washing water of steel mill | |
| CN207299958U (en) | A kind of energy-saving circulating utilizes tail gas treatment device control circuit | |
| CN211261824U (en) | Blast furnace low temperature waste heat recovery system | |
| CN210773425U (en) | Waste heat recovery device for heating furnace for processing wind power flange | |
| CN215863294U (en) | Submerged arc furnace waste heat power generation system boiler device | |
| CN215675222U (en) | Waste heat utilization economizer system of useless processing system that burns of danger | |
| CN221147230U (en) | Large-scale industrial furnace waste heat recovery treatment equipment | |
| CN219829107U (en) | Heat exchange energy-saving steam water heater | |
| CN201521937U (en) | Waste-heat power-generation apparatus connected with float glass smelting kiln in parallel |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |