CN210620705U - Wet coke quenching steam recovery system - Google Patents
Wet coke quenching steam recovery system Download PDFInfo
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- CN210620705U CN210620705U CN201921529636.XU CN201921529636U CN210620705U CN 210620705 U CN210620705 U CN 210620705U CN 201921529636 U CN201921529636 U CN 201921529636U CN 210620705 U CN210620705 U CN 210620705U
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Abstract
The utility model discloses a wet quenching steam recovery system, include: the device comprises a first smoke pipe, a second smoke pipe, a third smoke pipe, a spray tower, a fan, a coke quenching tower, a circulating water tank, a washer and a cooling tower; a first spray pipe is arranged in the spray tower; the washer comprises a transfusion tube and a gas transmission tube, wherein the transfusion tube comprises a first connecting section, a second connecting section and a third connecting section, and the inner diameter of the second connecting section is smaller than that of the first connecting section/the third connecting section. First shower spun cold water in the spray column for get rid of dust and partial harmful gas in the flue gas, make steam release latent heat simultaneously and become hot water, retrieve most vapor in the flue gas, liquid process during the second linkage segment, the velocity of flow of liquid can increase in the twinkling of an eye, produces the negative pressure, thereby will flue gas in the third flue pipe is introduced the second linkage segment realizes the further washing to the flue gas, discharges towards the cooling tower with the tail gas after the washing, discharges after cooling process to tail gas.
Description
Technical Field
The utility model relates to a wet quenching technical field, concretely relates to wet quenching steam recovery system.
Background
At present, two technologies of wet quenching and dry quenching are mainly used for coke quenching and wet quenching, and the wet quenching has more problems, such as high moisture content of finished coke, influence on the quality of the coke and unstable moisture, and the key is that a large amount of water vapor containing coke breeze and other pollutants generated during coke quenching causes serious dust pollution of environmental air, which is absolutely not allowed by current environmental supervision and government departments, the amount of discharged steam is very large during coke quenching, and 0.54-0.60 ton of water is consumed by each ton of coke on average to be discharged as steam. The method for quenching coke by using wastewater generated by a coke-oven plant is a common main method for the coke-oven plant at present, and the amount of sewage discharge is reduced due to the transfer discharge of the coking wastewater, but the amount of water vapor containing a large amount of coke breeze and other pollutants generated in the coke-quenching process is not reduced at all, so that the coke-quenching process still pollutes the atmosphere, is one of the root causes involved in the generation of suspected haze, and wastes precious water resources.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome above-mentioned technique not enough, provide a wet quenching steam recovery system, retrieve quenching steam, practiced thrift the water resource.
In order to achieve the technical purpose, the technical scheme of the utility model provides a wet quenching steam recovery system, include: the device comprises a first smoke pipe, a second smoke pipe, a third smoke pipe, a spray tower, a fan, a coke quenching tower, a circulating water tank, a washer and a cooling tower;
the upper end of the first smoke pipe is communicated with an upper inner cavity of the coke quenching tower, the lower end of the first smoke pipe is communicated with a lower inner cavity of the spray tower, a first spray pipe is arranged in the spray tower, the first spray pipe is communicated with the circulating water tank through a first water suction pump, and the bottom of the spray tower is also communicated with the circulating water tank;
the upper end of the second smoke pipe is communicated with the upper inner cavity of the spray tower, and the lower end of the second smoke pipe is communicated with the air exhaust end of the fan;
the cooling tower comprises a shell and a fan, wherein the upper end and the lower end of the shell are both provided with openings, the lower end opening of the shell is communicated with the circulating water pool, and the fan is arranged at the upper end opening of the shell;
the scrubber includes transfer line and gas-supply pipe, the transfer line includes first linkage segment, second linkage segment and third linkage segment, first linkage segment, second linkage segment and third linkage segment communicate in proper order, just the internal diameter of second linkage segment is less than the internal diameter of first linkage segment/third linkage segment, the third linkage segment is kept away from the one end of second linkage segment with the inner chamber intercommunication of casing, the one end of gas-supply pipe with the inner chamber intercommunication of second linkage segment the other end of gas-supply pipe with the one end intercommunication of third tobacco pipe, the other end of third tobacco pipe with the air-out end intercommunication of fan, first linkage segment is kept away from the one end of second linkage segment pass through the second suction pump with the lower part inner chamber intercommunication of spray column.
Compared with the prior art, the beneficial effects of the utility model include: the fan is used for guiding smoke in the quenching tower to move in sequence along the first smoke pipe, the spray tower, the second smoke pipe, the fan, the third smoke pipe, the washer and the cooling tower, cold water sprayed by the first spray pipe in the spray tower is used for removing dust and partial harmful gas in the smoke, meanwhile, latent heat released by water vapor is changed into hot water, most of water vapor in the smoke is recovered, the fan pumps the purified smoke and a small amount of water vapor into the third smoke pipe, the second water suction pump pumps liquid at the bottom of the spray tower into the liquid conveying pipe, as the inner diameter of the second connecting section is smaller than that of the first connecting section/the third connecting section, the liquid conveying pipe is of a Venturi structure, when the liquid passes through the second connecting section, the flow velocity of the liquid can be instantly increased, so that negative pressure is generated in the second connecting section, and the smoke in the third smoke pipe is introduced into the second connecting section, the further washing of the flue gas is realized, the washed tail gas is discharged to a cooling tower, and the tail gas is discharged after being subjected to cooling treatment, so that the closed cycle of the whole wet quenching production system is realized, and no white smoke overflows.
Drawings
Fig. 1 is a schematic diagram of an embodiment of a wet quenching vapor recovery system provided by the present invention.
Fig. 2 is a schematic diagram of the internal structure of the scrubber of the present invention.
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 merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1 and 2, the present embodiment provides a wet quenching vapor recovery system, including: the device comprises a first smoke pipe 1, a second smoke pipe 2, a third smoke pipe 3, a spray tower 4, a fan 5, a coke quenching tower 6, a circulating water tank 7, a scrubber 8 and a cooling tower 9.
The upper end of the first smoke pipe 1 is communicated with an upper inner cavity of the coke quenching tower 6, the lower end of the first smoke pipe 1 is communicated with a lower inner cavity of the spray tower 4, a first spray pipe 4a is arranged in the spray tower 4, the first spray pipe 4a is communicated with the circulating water tank 7 through a first water suction pump a, and the bottom of the spray tower 4 is also communicated with the circulating water tank 7.
The upper end of the second smoke tube 2 is communicated with the upper inner cavity of the spray tower 4, the lower end of the second smoke tube 2 is communicated with the air exhaust end of the fan 5, and the fan 5 is used for guiding smoke to flow.
The scrubber 8 includes transfer line 81 and gas-supply pipe 82, the transfer line 81 includes first linkage 811, second linkage 812 and third linkage 813, first linkage 811, second linkage 812 and third linkage 813 communicate in proper order, just the internal diameter of second linkage 812 is less than the internal diameter of first linkage 811/third linkage 813, the one end of gas-supply pipe 82 with the inner chamber intercommunication of second linkage 812, the other end of gas-supply pipe 82 with the one end intercommunication of third tobacco pipe 3, the other end of third tobacco pipe 3 with the air-out end intercommunication of fan 5, first linkage 811 keeps away from the one end of second linkage 812 pass through second suction pump c with the lower part inner chamber intercommunication of spray column 4.
The cooling tower 9 includes a housing 91 and a fan 92, the upper and lower ends of the housing 91 are open, the lower end opening of the housing 91 is communicated with the circulating water tank 7, the fan 92 is disposed at the upper end opening of the housing 91, the fan 92 is used for discharging hot air in the housing 91 upwards, specifically, the housing 91 is filled with stainless steel corrugated packing, one end of the third connecting section 813 away from the second connecting section 812 is communicated with the inner cavity of the housing 91, and the third connecting section 813 is disposed above the stainless steel corrugated packing.
The fan 5 is used for guiding the flue gas in the quenching tower 6 to move in sequence along the first smoke pipe 1, the spray tower 4, the second smoke pipe 2, the fan 5, the third smoke pipe 3, the scrubber 8 and the cooling tower 9, the cold water sprayed by the first spray pipe 4a in the spray tower 4 is used for removing dust and partial harmful gas in the flue gas, simultaneously the water vapor releases latent heat to become hot water, most of water vapor in the flue gas is recovered, the fan 5 pumps the purified flue gas and a small amount of water vapor into the third smoke pipe 3, the second water pump c pumps the liquid at the bottom of the spray tower 4 into the liquid conveying pipe 81, because the inner diameter of the second connecting section 812 is smaller than that of the first connecting section 811/the third connecting section 813, the liquid 81 is of a venturi structure, when the liquid passes through the second connecting section 812, the flow rate of the liquid can be increased instantaneously, so that negative pressure is generated in the second connecting section 812, thereby the flue gas in the third flue pipe 3 is introduced into the second connecting section 812, further washing of the flue gas is realized, the washed tail gas is discharged to the cooling tower 9, the tail gas is discharged after cooling treatment, the closed cycle of the whole wet quenching production system is realized, and no white smoke overflows.
In this embodiment, an annular water tank d is disposed at the edge of the lower end of the spray tower 4, a water guide hole or/and a water guide pipe communicated with the annular water tank d is disposed at the lower end of the spray tower 4, a water outlet end of the water guide hole or/and the water guide pipe is disposed below the water surface of the annular water tank d, and water in the annular water tank d flows to the circulating water tank 7.
The number of the first spray pipes 4a is multiple, the first spray pipes 4a are sequentially arranged at intervals along the height direction of the spray tower 4, a plurality of first packing layers 4b are arranged in the spray tower 4, the first packing layers 4b are sequentially arranged at intervals along the height direction of the spray tower 4, and at least one first spray pipe 4a is arranged between every two adjacent first packing layers 4 b.
The embodiment further provides a preferable implementation manner, a second spraying pipe 1a is arranged in the first smoke pipe 1, the second spraying pipe 1a is communicated with the circulating water tank 7 through a third water pump e, the second spraying pipes 1a are multiple, the second spraying pipes 1a are sequentially arranged along the height direction of the first smoke pipe 1 at intervals, a plurality of second packing layers 1b are arranged in the first smoke pipe 1, the second packing layers 1b are sequentially arranged along the height direction of the first smoke pipe 1 at intervals, at least one second spraying pipe 1a is arranged between every two adjacent second packing layers 1b, and the smoke purification effect is further improved.
The working principle is as follows: the fan 5 is used for guiding the flue gas in the quenching tower 6 to move in sequence along the first smoke pipe 1, the spray tower 4, the second smoke pipe 2, the fan 5, the third smoke pipe 3, the scrubber 8 and the cooling tower 9, the cold water sprayed by the first spray pipe 4a in the spray tower 4 is used for removing dust and partial harmful gas in the flue gas, simultaneously the water vapor releases latent heat to become hot water, most of water vapor in the flue gas is recovered, the fan 5 pumps the purified flue gas and a small amount of water vapor into the third smoke pipe 3, the second water pump c pumps the liquid at the bottom of the spray tower 4 into the liquid conveying pipe 81, because the inner diameter of the second connecting section 812 is smaller than that of the first connecting section 811/the third connecting section 813, the liquid 81 is of a venturi structure, when the liquid passes through the second connecting section 812, the flow rate of the liquid can be increased instantaneously, so that negative pressure is generated in the second connecting section 812, thereby will the flue gas in the third tobacco pipe 3 is introduced second linkage segment 812 realizes the further washing to the flue gas, discharges the tail gas after will washing to cooling tower 9, discharges after cooling down the tail gas, has accomplished whole wet process quenching production system and has realized closed cycle, and no white smoke overflows, and this technology can practice thrift a large amount of water of quenching out coke, and per ton finished product coke can save water 459 ~ 510 kilograms, and per car 40 tons coke can practice thrift water of quenching out coke 18360 ~ 20400 kilograms, and this is very meaningful to the enterprise in water shortage area.
The above description of the present invention does not limit the scope of the present invention. Any other corresponding changes and modifications made according to the technical idea of the present invention should be included in the scope of the claims of the present invention.
Claims (7)
1. A wet quench vapor recovery system, comprising: the device comprises a first smoke pipe, a second smoke pipe, a third smoke pipe, a spray tower, a fan, a coke quenching tower, a circulating water tank, a washer and a cooling tower;
the upper end of the first smoke pipe is communicated with an upper inner cavity of the coke quenching tower, the lower end of the first smoke pipe is communicated with a lower inner cavity of the spray tower, a first spray pipe is arranged in the spray tower, the first spray pipe is communicated with the circulating water tank through a first water suction pump, and the bottom of the spray tower is also communicated with the circulating water tank;
the upper end of the second smoke pipe is communicated with the upper inner cavity of the spray tower, and the lower end of the second smoke pipe is communicated with the air exhaust end of the fan;
the cooling tower comprises a shell and a fan, wherein the upper end and the lower end of the shell are both provided with openings, the lower end opening of the shell is communicated with the circulating water pool, and the fan is arranged at the upper end opening of the shell;
the scrubber includes transfer line and gas-supply pipe, the transfer line includes first linkage segment, second linkage segment and third linkage segment, first linkage segment, second linkage segment and third linkage segment communicate in proper order, just the internal diameter of second linkage segment is less than the internal diameter of first linkage segment/third linkage segment, the third linkage segment is kept away from the one end of second linkage segment with the inner chamber intercommunication of casing, the one end of gas-supply pipe with the inner chamber intercommunication of second linkage segment the other end of gas-supply pipe with the one end intercommunication of third tobacco pipe, the other end of third tobacco pipe with the air-out end intercommunication of fan, first linkage segment is kept away from the one end of second linkage segment pass through the second suction pump with the lower part inner chamber intercommunication of spray column.
2. The wet quenching steam recovery system of claim 1, wherein the lower end edge of the spray tower is provided with an annular water tank, the lower end of the spray tower is provided with a water guide hole or/and a water guide pipe communicated with the annular water tank, the water outlet end of the water guide hole or/and the water guide pipe is arranged below the water surface of the annular water tank, and the water flow in the annular water tank flows to the circulating water tank.
3. The wet quenching vapor recovery system of claim 1, wherein the first spray pipe is a plurality of first spray pipes, and the plurality of first spray pipes are sequentially arranged at intervals along the height direction of the spray tower.
4. The wet quenching vapor recovery system of claim 3, wherein a plurality of first packing layers are arranged in the spray tower, the plurality of first packing layers are sequentially arranged at intervals along the height direction of the spray tower, and at least one first spray pipe is arranged between every two adjacent first packing layers.
5. The wet quenching vapor recovery system of claim 1, wherein a second spray pipe is disposed within the first flue pipe, the second spray pipe being in communication with the circulating water sump via a third suction pump.
6. The wet quenching vapor recovery system of claim 5, wherein the second spray pipe is a plurality of second spray pipes, and the plurality of second spray pipes are sequentially arranged at intervals along the height direction of the first smoke pipe.
7. The wet quenching steam recovery system of claim 6, wherein a plurality of second packing layers are arranged in the first smoke pipe, the plurality of second packing layers are sequentially arranged at intervals along the height direction of the first smoke pipe, and at least one second spraying pipe is arranged between every two adjacent second packing layers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921529636.XU CN210620705U (en) | 2019-09-12 | 2019-09-12 | Wet coke quenching steam recovery system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921529636.XU CN210620705U (en) | 2019-09-12 | 2019-09-12 | Wet coke quenching steam recovery system |
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| Publication Number | Publication Date |
|---|---|
| CN210620705U true CN210620705U (en) | 2020-05-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921529636.XU Active CN210620705U (en) | 2019-09-12 | 2019-09-12 | Wet coke quenching steam recovery system |
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|---|---|
| CN (1) | CN210620705U (en) |
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2019
- 2019-09-12 CN CN201921529636.XU patent/CN210620705U/en active Active
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