CN218058686U - Sodium salt ash processing apparatus - Google Patents
Sodium salt ash processing apparatus Download PDFInfo
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- CN218058686U CN218058686U CN202222006006.2U CN202222006006U CN218058686U CN 218058686 U CN218058686 U CN 218058686U CN 202222006006 U CN202222006006 U CN 202222006006U CN 218058686 U CN218058686 U CN 218058686U
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- sodium salt
- ash
- salt ash
- sodium
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Abstract
The utility model discloses a sodium salt ash processing apparatus, including the clean flue, still include sodium salt ash water-dissolving system, sodium salt ash solution filtration system and sodium salt drying system, wherein sodium salt ash solution filtration system is connected with sodium salt ash water-dissolving system, and sodium salt drying system is connected with sodium salt ash solution filtration system, and sodium salt drying system and sodium salt ash water-dissolving system are connected with clean flue respectively. The utility model discloses a device is handled solid useless sodium salt ash, and the investment is low, the material consumption is low, no three wastes produce, and make full use of flue gas waste heat does not newly increase the heat source, accords with the two carbon target requirements.
Description
Technical Field
The utility model relates to a solid useless processing technology field especially relates to a by-product sodium salt ash processing apparatus for boiler or other combustion apparatus flue gas desulfurization.
Background
At present, the flue gas desulfurization technology is generally divided into a wet method, a dry method and a semi-dry method, in some working conditions (such as coke oven flue gas) with low sulfur dioxide concentration, complex components of flue gas dust and high flue gas temperature, an SDS (sodium dodecyl sulfate) dry desulfurization process is often adopted, and NaHCO is utilized 3 As the absorbent, the process is mature and reliable and has more engineering applications.
The desulfurization byproduct of the dry desulfurization process is sodium salt ash, which belongs to solid waste at present, and because the desulfurization ash has complex components and high treatment cost, the problems of harmless discharge, external sale and internal recycling exist, and how to treat the sodium salt ash is a difficult problem which is not thoroughly solved in the desulfurization industry.
SUMMERY OF THE UTILITY MODEL
Utility model purpose: the utility model aims at providing a make full use of flue gas waste heat improves sodium salt ash solution temperature, improves the solubility of sodium salt ash, reduces the sodium salt ash processing apparatus of technology moisturizing.
The technical scheme is as follows: the utility model discloses a sodium salt ash processing apparatus, including the clean flue, still include sodium salt ash water-dissolving system, sodium salt ash solution filtration system and sodium salt drying system, wherein sodium salt ash solution filtration system is connected with sodium salt ash water-dissolving system, and sodium salt drying system is connected with sodium salt ash solution filtration system, and sodium salt drying system and sodium salt ash water-dissolving system are connected with clean flue respectively.
Furthermore, the sodium salt ash water dissolving system comprises a heat exchanger arranged in the clean flue, a water pump connected with the inlet end of the heat exchanger, and a sodium salt ash water dissolving tank connected with the outlet end of the heat exchanger.
Furthermore, the sodium ash water dissolving system also comprises a sodium ash solution pump connected with the sodium ash water dissolving tank, and the sodium ash solution pump is used for conveying the sodium ash solution to the sodium ash solution filtering system.
Furthermore, the sodium salt ash solution filtering system comprises a concentration circulating tank connected with the sodium salt ash water dissolving system, a filtering circulating pump connected with an outlet of the concentration circulating tank, and a filtering device connected with the filtering circulating pump, wherein an inlet of the filtering device is connected with an outlet of the filtering circulating pump, and an outlet of the filtering device is connected with an inlet of the concentration circulating tank.
Furthermore, the sodium salt ash solution filtering system also comprises a mixer arranged between the sodium salt ash water-dissolving system and the concentration circulating tank, the inlet of the mixer is connected with a dosing tank, and a dosing pump is arranged between the dosing tank and the mixer.
Further, the filtering device is a microfiltration membrane treatment device, and the filtering device is provided with a backwashing water tank.
Further, the sodium salt drying system comprises a spray drying tower connected with the sodium salt ash solution filtering system, a dust remover connected with the spray drying tower, and a packaging machine which is respectively connected with the spray drying tower and the dust remover and is used for collecting the treated sodium salt.
Furthermore, the sodium salt drying system also comprises an induced draft fan connected with the dust remover.
Has the advantages that: compared with the prior art, the utility model has the advantages of as follows:
(1) The sodium salt ash water dissolving system adopts the flue gas heat exchanger to heat the process water, fully utilizes the flue gas waste heat, improves the temperature of the sodium salt ash solution, improves the solubility of the sodium salt ash, reduces the process water supplement, further reduces the evaporation capacity of the sodium salt drying system, reduces the model selection parameters of the spray drying tower and saves the investment;
(2) The sodium salt ash solution filtering system is characterized in that a flocculating agent is added into a mixer and a microfiltration membrane treatment device is used for deeply filtering and removing ash in sodium salt ash, so that the whiteness of a sodium salt finished product is ensured, the selling price of the sodium salt is increased, and the project income is further increased. The sodium salt drying system heats and dries the sodium salt solution by utilizing the waste heat of the clean flue gas without adding a heat source, thereby effectively reducing the operation cost and the energy consumption of the project;
(3) Simple structure, low investment, low operation cost and energy consumption, and is worth popularizing and using.
Drawings
FIG. 1 is a schematic view of the present invention;
reference numerals are as follows: 1. a spray drying tower; 2. a dust remover; 3. an induced draft fan; 4. a sodium salt ash dissolving tank; 5. a sodium salt ash solution pump; 6. a mixer; 7. a concentration circulating tank; 8. a filtration circulating pump; 9. a filtration device; 10. a dosing box; 11. a dosing pump; 12. a packaging machine; 13. a water pump; 14. a heat exchanger; 15. a first flapper door; 16. a second shutter door; 17. a flue; 18. cleaning a flue; 19. process water; 20. a flocculating agent; 21. a backwash water tank; 22. a coal yard.
Detailed Description
The technical solution of the present invention will be further explained with reference to the accompanying drawings.
According to the utility model discloses a specific embodiment, shown by figure 1, the utility model provides a pair of sodium salt ash processing apparatus for boiler or other combustion apparatus flue gas desulfurization's accessory substance is handled, and clean flue 18 is existing for original combustion apparatus, the utility model discloses a sodium salt ash processing apparatus includes: the system comprises a sodium salt ash water dissolving system, a sodium salt ash solution filtering system and a sodium salt drying system, wherein the sodium salt ash solution filtering system is connected with the sodium salt ash water dissolving system through a water pipe, the sodium salt drying system is connected with the sodium salt ash solution filtering system through a water pipe, and the sodium salt drying system and the sodium salt ash water dissolving system are respectively connected with a clean flue 18.
The sodium salt ash water-dissolving system comprises a heat exchanger 14, a water pump 13, a sodium salt ash water-dissolving tank 4 and a sodium salt ash water-dissolving pump 5; the heat exchanger 14 is arranged in an original clean flue 18 of the combustion equipment, the water pump 13 is connected with the inlet end of the heat exchanger 14, and the sodium salt ash water-dissolving tank 4 is connected with the outlet end of the heat exchanger 14. The sodium salt ash solution pump 5 is connected with the sodium salt ash water-dissolving tank 4, and the sodium salt ash solution pump 5 is used for conveying the sodium salt ash solution to the sodium salt ash solution filtering system.
The sodium salt ash solution filtering system comprises a mixer 6, a dosing tank 10, a dosing pump 11, a concentration circulating tank 7, a filtering circulating pump 8 and a filtering device 9; the mixer 6 is arranged at the outlet of the sodium salt ash solution pump 5 and the inlet of the concentration circulating tank 7 and is connected with the outlet of the dosing pump 11. Filtration circulating pump 8 and 7 exit linkage of concentrated recycle tank, filter equipment 9 is connected with filtration circulating pump 8, and wherein filter equipment 9's import and 8 exit linkage of filtration circulating pump, filter equipment 9's export and 7 exit linkage of concentrated recycle tank. The inlet of the mixer 6 is connected with a dosing tank 10, and a dosing pump 11 is arranged between the dosing tank 10 and the mixer 6. The filtering device 9 is a microfiltration membrane treatment device, and the filtering device 9 is provided with a backwashing water tank 21.
The sodium salt drying system comprises a first baffle door 15, a spray drying tower 1, a dust remover 2, an induced draft fan 3, a packaging machine 12, a flue 17 and a second baffle door 16. The dust remover 2 is connected with the spray drying tower 1, the packaging machine 12 is respectively connected with the spray drying tower 1 and the discharge hole of the dust remover 2, and the packaging machine 12 is used for collecting the treated salt. The air inlet of the draught fan 3 is connected with the air outlet of the dust remover 2, the air outlet of the draught fan 3 is connected with the clean flue 18 through a flue 17, and a second baffle plate door 16 is arranged between the draught fan 3 and the clean flue 18. The spray drying tower 1 is connected with a clean flue 18, and a first baffle door 15 is arranged between the spray drying tower 1 and the clean flue 18. The spray drying tower 1, the dust remover 2 and the induced draft fan 3 are connected through a bypass flue 17 and connected with a clean flue 18 through a first baffle door 15 and a second baffle door 16.
The filtering device 9 adopts a micro-filtration membrane treatment device, a back flushing water tank 21 is arranged, and a small amount of grey water is sent to a raw coal yard 22 for recycling.
The dosing tank 10 is fed to the mixer 6 by a dosing pump 11 using a flocculating agent 20.
The dust remover 2 adopts one or two of bag dust removal and electric bag dust removal to collect the finished sodium salt product.
The utility model relates to a sodium ash processing apparatus, its theory of use as follows: the process water 19 exchanges heat with clean flue gas through a heat exchanger 14, is heated to a certain temperature, enters a sodium salt ash dissolving tank 4, forms sodium salt ash solution with desulfurization by-product sodium salt ash, is sent to a mixer 6 through a sodium salt ash solution pump 5, is fully mixed with a flocculating agent sent by a dosing pump 11, is sent to a concentration circulating tank 7, is sent to a filtering device 9 through a filtering circulating pump 8 for deep filtration, is sent to a spray drying tower 1 after ash in the sodium salt ash solution is removed, a flue gas is introduced into the spray drying tower 1 from a clean flue 18 through a flue 17 by controlling a first baffle door 15, is evaporated and crystallized for the sodium salt solution, is collected through a dust collector 2, and is packaged and sold through a packaging machine 12. The flue gas is sucked by the draught fan 3 after passing through the spray drying tower 1 and the dust remover 2, is sent to the clean flue 18 by controlling the second baffle plate door 16, and then enters the chimney to reach the standard for emission.
Claims (8)
1. The sodium salt ash treatment device comprises a clean flue (18) and is characterized by comprising a sodium salt ash water dissolving system, a sodium salt ash solution filtering system and a sodium salt drying system, wherein the sodium salt ash solution filtering system is connected with the sodium salt ash water dissolving system, the sodium salt drying system is connected with the sodium salt ash solution filtering system, and the sodium salt drying system and the sodium salt ash water dissolving system are respectively connected with the clean flue (18).
2. The sodium ash treatment plant according to claim 1, wherein the sodium ash dissolving system comprises a heat exchanger (14) installed in the clean flue (18), a water pump (13) connected to an inlet end of the heat exchanger (14), and a sodium ash dissolving tank (4) connected to an outlet end of the heat exchanger (14).
3. The sodium salt ash treatment device according to claim 2, wherein the sodium salt ash water dissolving system further comprises a sodium salt ash solution pump (5) connected to the sodium salt ash water dissolving tank (4), the sodium salt ash solution pump (5) being configured to deliver the sodium salt ash solution to the sodium salt ash solution filtering system.
4. The sodium salt ash treatment device according to claim 1, wherein the sodium salt ash solution filtering system comprises a concentration circulating tank (7) connected with the sodium salt ash dissolving water system, a filtering circulating pump (8) connected with an outlet of the concentration circulating tank (7), and a filtering device (9) connected with the filtering circulating pump (8), wherein an inlet of the filtering device (9) is connected with an outlet of the filtering circulating pump (8), and an outlet of the filtering device (9) is connected with an inlet of the concentration circulating tank (7).
5. The sodium ash treatment device according to claim 4, wherein the sodium ash solution filtration system further comprises a mixer (6) provided between the sodium ash solution system and the concentration circulation tank (7), a dosing tank (10) is connected to an inlet of the mixer (6), and a dosing pump (11) is provided between the dosing tank (10) and the mixer (6).
6. The sodium ashes treating device according to claim 4, characterized in that the filtration device (9) is a microfiltration membrane treatment device, the filtration device (9) being provided with a backwash water tank (21).
7. The sodium salt ash treatment plant according to claim 1, characterized in that the sodium salt drying system comprises a spray drying tower (1) connected to the sodium salt ash solution filtration system, a dust separator (2) connected to the spray drying tower (1), and a packing machine (12) connected to the spray drying tower (1) and the dust separator (2), respectively, for collecting the treated sodium salt.
8. The sodium salt ash treatment device according to claim 7, wherein the sodium salt drying system further comprises an induced draft fan (3) connected to the dust collector (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222006006.2U CN218058686U (en) | 2022-08-01 | 2022-08-01 | Sodium salt ash processing apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222006006.2U CN218058686U (en) | 2022-08-01 | 2022-08-01 | Sodium salt ash processing apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218058686U true CN218058686U (en) | 2022-12-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222006006.2U Active CN218058686U (en) | 2022-08-01 | 2022-08-01 | Sodium salt ash processing apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218058686U (en) |
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2022
- 2022-08-01 CN CN202222006006.2U patent/CN218058686U/en active Active
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