CN217875881U - Industry contains salt waste gas, waste liquid purification treatment system - Google Patents
Industry contains salt waste gas, waste liquid purification treatment system Download PDFInfo
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- CN217875881U CN217875881U CN202222232347.1U CN202222232347U CN217875881U CN 217875881 U CN217875881 U CN 217875881U CN 202222232347 U CN202222232347 U CN 202222232347U CN 217875881 U CN217875881 U CN 217875881U
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- waste gas
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Abstract
The utility model discloses an industry is interior to contain salt waste gas, waste liquid purification processing system, including low NOx combustor, low NOx combustor has exhaust-heat boiler through the pipe connection, exhaust-heat boiler keeps away from the one end of low NOx combustor and has SCR deNOx systems through the pipe connection, SCR deNOx systems keeps away from exhaust-heat boiler's one end and has SGH vapour gas heat exchanger through the pipe connection, the one end that SCR deNOx systems was kept away from to SGH vapour gas heat exchanger has the economizer through the pipe connection, the one end that SGH vapour gas heat exchanger was kept away from to the economizer has the chimney through the pipe connection. The utility model is suitable for a waste gas burns burning furnace and exhaust-gas purification and handles, can ensure through the low NOx combustor that sets up that the organic matter obtains thoroughly decomposing, and the salt on the soot blower of setting can regularly clear up the heat-transfer surface prevents that molten state salt from bonding formation salt ash bridging on the tube bank and blockking up convection section tube bank and make the boiler can not normal operating.
Description
Technical Field
The utility model belongs to the technical field of waste gas incinerator and exhaust purification handles, specifically be an industry is interior to contain salt waste gas, waste liquid purification treatment system.
Background
The disposal of hazardous waste is various, and the main purpose is to reduce the amount of waste produced, reduce the volume of solid hazardous waste, reduce or eliminate the activity of hazardous components of the hazardous waste by landfill, incineration or other physical, chemical and biological methods, or to finally place the hazardous waste in a place or facility meeting the requirements of environmental protection regulations and not to take back the hazardous waste;
the system for purifying and treating the waste gas and the waste liquid containing salt in the industry is a system specially used for purifying the waste gas and the waste liquid containing salt;
the incineration is one of important means for safe disposal of the hazardous waste, the reduction and harmless disposal of the hazardous waste can be realized, at present, the most treatment processes applied at home and abroad comprise rotary kiln incineration, mechanical grate furnaces, pyrolysis gasifiers and other technologies, when the waste gas incinerator and the waste gas are treated, the waste gas incinerator and the waste gas cannot be fully combusted, and molten salt is bonded on a tube bundle to form salt ash bridging to block the tube bundle of a convection section, so that the boiler cannot normally operate.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to solve the problem in the background art, provide an industry contains salt waste gas, waste liquid purification treatment system.
The utility model adopts the technical scheme as follows:
the utility model provides an industry is including salt waste gas, waste liquid purification processing system, includes low NOx combustor, low NOx combustor has exhaust-heat boiler through the pipe connection, exhaust-heat boiler keeps away from the one end of low NOx combustor through the pipe connection and has SCR deNOx systems, SCR deNOx systems keeps away from exhaust-heat boiler's one end through the pipe connection and has SGH steam gas heat exchanger, the one end that SCR deNOx systems was kept away from to SGH steam gas heat exchanger has the economizer through the pipe connection, the one end that SGH steam gas heat exchanger was kept away from to the economizer has the chimney through the pipe connection.
The low NOx combustor can ensure that waste gas, atomized waste liquid and combustion air are fully mixed, and meanwhile, the incineration temperature and the smoke retention time in the combustion chamber are respectively more than or equal to 1100 ℃ and more than or equal to 2s, so that organic matters are thoroughly decomposed, and the soot blower can regularly clean salt on a heat exchange surface.
Preferably, the low NOx burner comprises a burner main body, a discharge hole is fixedly connected to one side of the bottom surface of the burner main body, and a combustion-supporting fan is fixedly connected to the other side of the bottom surface of the burner main body.
Preferably, a first evaporator is mounted on the inner side of the burner body close to the top of the discharge hole, and a superheater is mounted on the top of the first evaporator.
Preferably, the waste heat boiler comprises a boiler main body, a charcoal discharging port is fixedly connected to the bottom end of the boiler main body, a waste gas outlet is fixedly connected to one side of the bottom end of the boiler main body, and a plurality of second evaporators are arranged in an inner cavity of the boiler main body.
The water-cooling double-screw cooler arranged at the bottom of the low NOx burner and the waste heat boiler can cool the temperature of the flue gas to be below the melting point of salt before the flue gas enters the convection section tube bundle of the waste heat boiler, so that the residual salt in the flue gas is converted from a molten state into a solid state, and the phenomenon that the boiler cannot normally run due to the fact that the molten salt is bonded on the tube bundle to form salt ash bridging to block the convection section tube bundle is prevented.
Preferably, the second evaporator is in a linear type and is arranged in the inner cavity of the boiler main body at equal intervals.
Preferably, an induced draft fan is installed at the connection position of the economizer and the chimney.
Preferably, a bag-type dust collector is arranged at the bottom of the SCR denitration system.
Preferably, the bottom of the SGH steam-gas heat exchanger is provided with an analysis cabin.
Preferably, the bottoms of the low NOx burner and the waste heat boiler are both connected with a conveying pipeline, and the bottom end of the conveying pipeline is connected with a water-cooling double-screw cooler.
Preferably, a plurality of soot blowers are installed on a surface of the burner body.
To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:
1. the utility model discloses in, waste liquid and combustion air intensive mixing after waste gas, atomizing can be guaranteed to the low NOx combustor that sets up, must guarantee simultaneously that incineration temperature and flue gas dwell time in the combustion chamber satisfy respectively more than or equal to 1100 ℃ and more than or equal to 2s to ensure that the organic matter obtains thorough decomposition, the salinity on the soot blower of setting can regularly clear up the heat-transfer surface.
2. The utility model discloses in, can cool off its temperature to below the melting point of salt before the flue gas gets into exhaust-heat boiler convection section tube bank at the water-cooling twin-screw cooler that low NOx combustor and exhaust-heat boiler bottom set up, make remaining salt change into solid-state by the molten state in the flue gas, prevent that molten state salt from bonding formation salt ash bridging on the tube bank and stopping up the convection section tube bank and make the boiler can not normal operating.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural diagram of a low NOx burner according to the present invention;
fig. 3 is a schematic structural diagram of the middle waste heat boiler of the present invention.
The labels in the figure are: 1. a low NOx burner; 101. a burner body; 102. a discharge port; 103. a soot blower; 104. a first evaporator; 105. a superheater; 2. a waste heat boiler; 201. a boiler main body; 202. a charcoal discharging port; 203. an exhaust gas outlet; 204. a second evaporator; 3. an SCR denitration system; 4. an SGH steam-gas heat exchanger; 5. a coal economizer; 6. an induced draft fan; 7. a chimney; 8. a delivery conduit; 9. a water-cooled twin-screw cooler; 10. a combustion fan; 11. a bag-type dust collector; 12. the cabin is analyzed.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
Example 1:
referring to fig. 1-3, a system for purifying and treating waste gas and waste liquid containing salt in industry comprises a low NOx burner 1, wherein the low NOx burner 1 is connected with a waste heat boiler 2 through a pipeline, one end of the waste heat boiler 2, which is far away from the low NOx burner 1, is connected with an SCR denitration system 3 through a pipeline, one end of the SCR denitration system 3, which is far away from the waste heat boiler 2, is connected with an SGH steam-gas heat exchanger 4 through a pipeline, one end of the SGH steam-gas heat exchanger 4, which is far away from the SCR denitration system 3, is connected with an economizer 5 through a pipeline, and one end of the economizer 5, which is far away from the SGH steam-gas heat exchanger 4, is connected with a chimney 7 through a pipeline.
And an induced draft fan 6 is arranged at the joint of the economizer 5 and the chimney 7.
And a bag-type dust collector 11 is arranged at the bottom of the SCR denitration system 3.
Waste gas and waste liquid from a production device are sent to a vertically arranged incinerator for incineration, high-temperature flue gas generated by incineration recovers heat through a waste heat boiler 2 to generate superheated steam of 2.2MPa (G) and 250 ℃, an SNCR reserved opening is formed in a hearth of the waste heat boiler 2, the high-temperature flue gas discharged from the waste heat boiler 2 enters an economizer 5, and the temperature of the flue gas is further reduced while boiler feed water is heated, so that the temperature of the flue gas is reduced to a reasonable temperature which can be borne by a bag-type dust collector 11; the flue gas from the economizer 5 is firstly subjected to dust and impurities removal by a bag-type dust remover 11, the flue gas from the bag-type dust remover 11 is subjected to SGH steam-gas heat exchanger 4 to raise the temperature of the flue gas to 230 ℃ which is the optimal reaction temperature of the catalyst, NOx is removed by SCR, and finally the flue gas enters the economizer 5 to exchange heat to reduce the temperature of the flue gas, and finally the flue gas reaching the standard is discharged from a chimney 7 through a draught fan 6.
Example 2:
the low NOx burner 1 comprises a burner body 101, a discharge hole 102 is fixedly connected to one side of the bottom surface of the burner body 101, a combustion fan 10 is fixedly connected to the other side of the bottom surface of the burner body 101, and a plurality of soot blowers 103 are mounted on the surface of the burner body 101.
The low NOx combustor 1 can ensure that waste gas, atomized waste liquid and combustion-supporting air are fully mixed, and meanwhile, the incineration temperature and the smoke retention time in the combustion chamber are respectively more than or equal to 1100 ℃ and more than or equal to 2s, so that organic matters are thoroughly decomposed, and the dust blower 103 can regularly clean salt on a heat exchange surface.
A first evaporator 104 is installed at a top portion of the inner side of the burner body 101 near the discharge port 102, and a superheater 105 is installed at a top portion of the first evaporator 104.
The waste heat boiler 2 comprises a boiler main body 201, a charcoal discharging port 202 is fixedly connected to the bottom end of the boiler main body 201, a waste gas outlet 203 is fixedly connected to one side of the bottom end of the boiler main body 201, and a plurality of second evaporators 204 are arranged in an inner cavity of the boiler main body 201.
The second evaporator 204 is a straight line and is disposed at equal intervals in the inner cavity of the boiler main body 201.
The bottom of the SGH vapour-gas heat exchanger 4 is provided with an analysis cabin 12.
The bottoms of the low NOx burner 1 and the waste heat boiler 2 are both connected with a conveying pipeline 8, and the bottom end of the conveying pipeline 8 is connected with a water-cooling double-screw cooler 9.
The water-cooling double-screw cooler 9 arranged at the bottoms of the low NOx burner 1 and the waste heat boiler 2 can cool the temperature of the flue gas to be below the melting point of salt before the flue gas enters the convection section tube bundle of the waste heat boiler 2, so that the residual salt in the flue gas is converted from a molten state into a solid state, and the phenomenon that the molten salt is bonded on the tube bundle to form salt ash bridging to block the convection section tube bundle is prevented, so that the boiler cannot normally run.
According to the working principle, referring to fig. 1-3, waste gas and waste liquid from a production device are sent to a vertically arranged incinerator for incineration, high-temperature flue gas generated by incineration recovers heat through a waste heat boiler 2 to generate superheated steam of 2.2MPa (G) and 250 ℃, an SNCR reserved opening is arranged in a hearth of the waste heat boiler 2, the high-temperature flue gas from the waste heat boiler 2 enters an economizer 5, the boiler feed water is heated, and meanwhile, the flue gas temperature is further reduced, so that the flue gas temperature is reduced to a reasonable temperature which can be born by a bag-type dust collector 11; the flue gas from the economizer 5 is firstly subjected to dust and impurities removal by a bag-type dust remover 11, the flue gas from the bag-type dust remover 11 is subjected to SGH steam-gas heat exchanger 4 to raise the temperature of the flue gas to 230 ℃ which is the optimal reaction temperature of the catalyst, NOx is removed by SCR, and finally the flue gas enters the economizer 5 to exchange heat to reduce the temperature of the flue gas, and finally the flue gas reaching the standard is discharged from a chimney 7 through a draught fan 6.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not intended to limit the present invention, and any modifications, equivalents, improvements, etc. made within the spirit and principles of the present invention should be included within the scope of the present invention.
Claims (10)
1. The utility model provides an industry contains salt waste gas, waste liquid purification treatment system, includes low NOx combustor (1), its characterized in that: the low NOx burner (1) is connected with a waste heat boiler (2) through a pipeline, one end, far away from the low NOx burner (1), of the waste heat boiler (2) is connected with an SCR denitration system (3) through a pipeline, one end, far away from the waste heat boiler (2), of the SCR denitration system (3) is connected with an SGH steam-gas heat exchanger (4) through a pipeline, one end, far away from the SCR denitration system (3), of the SGH steam-gas heat exchanger (4) is connected with an economizer (5) through a pipeline, and one end, far away from the SGH steam-gas heat exchanger (4), of the economizer (5) is connected with a chimney (7) through a pipeline.
2. The system for purifying and treating the industrial salt-containing waste gas and liquid as claimed in claim 1, wherein: the low NOx burner (1) comprises a burner body (101), a discharge hole (102) is fixedly connected to one side of the bottom surface of the burner body (101), and a combustion fan (10) is fixedly connected to the other side of the bottom surface of the burner body (101).
3. The system for purifying and treating the industrial waste gas and liquid containing salt according to claim 2, wherein: a first evaporator (104) is arranged on the inner side of the burner main body (101) close to the top of the discharge hole (102), and a superheater (105) is arranged on the top of the first evaporator (104).
4. The system for purifying and treating the industrial waste gas and liquid containing salt according to claim 1, wherein: the waste heat boiler (2) comprises a boiler main body (201), a bottom end fixedly connected with charcoal discharging port (202) of the boiler main body (201), a bottom end one side fixedly connected with waste gas outlet (203) of the boiler main body (201), and an inner cavity of the boiler main body (201) is provided with a plurality of second evaporators (204).
5. The system for purifying and treating the industrial waste gas and liquid containing salt according to claim 4, wherein: the second evaporator (204) is in a linear type and is arranged in the inner cavity of the boiler main body (201) at equal intervals.
6. The system for purifying and treating the industrial waste gas and liquid containing salt according to claim 1, wherein: and an induced draft fan (6) is installed at the joint of the economizer (5) and the chimney (7).
7. The system for purifying and treating the industrial waste gas and liquid containing salt according to claim 1, wherein: and a bag-type dust collector (11) is arranged at the bottom of the SCR denitration system (3).
8. The system for purifying and treating the industrial waste gas and liquid containing salt according to claim 1, wherein: and an analysis cabin (12) is arranged at the bottom of the SGH steam-gas heat exchanger (4).
9. The system for purifying and treating the industrial waste gas and liquid containing salt according to claim 1, wherein: the bottom of the low NOx burner (1) and the bottom of the waste heat boiler (2) are both connected with a conveying pipeline (8), and the bottom end of the conveying pipeline (8) is connected with a water-cooling double-screw cooler (9).
10. The system for purifying and treating the industrial salt-containing waste gas and liquid as claimed in claim 2, wherein: the surface of the burner main body (101) is provided with a plurality of soot blowers (103).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222232347.1U CN217875881U (en) | 2022-08-24 | 2022-08-24 | Industry contains salt waste gas, waste liquid purification treatment system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222232347.1U CN217875881U (en) | 2022-08-24 | 2022-08-24 | Industry contains salt waste gas, waste liquid purification treatment system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217875881U true CN217875881U (en) | 2022-11-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222232347.1U Active CN217875881U (en) | 2022-08-24 | 2022-08-24 | Industry contains salt waste gas, waste liquid purification treatment system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217875881U (en) |
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2022
- 2022-08-24 CN CN202222232347.1U patent/CN217875881U/en active Active
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