CN110205145B - Wet pressure quenching energy recovery system and method - Google Patents
Wet pressure quenching energy recovery system and method Download PDFInfo
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- CN110205145B CN110205145B CN201810359715.4A CN201810359715A CN110205145B CN 110205145 B CN110205145 B CN 110205145B CN 201810359715 A CN201810359715 A CN 201810359715A CN 110205145 B CN110205145 B CN 110205145B
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- 238000010791 quenching Methods 0.000 title claims abstract description 122
- 230000000171 quenching effect Effects 0.000 title claims abstract description 103
- 238000011084 recovery Methods 0.000 title claims abstract description 14
- 238000000034 method Methods 0.000 title claims abstract description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 98
- 239000000571 coke Substances 0.000 claims abstract description 97
- 230000005494 condensation Effects 0.000 claims abstract description 14
- 238000009833 condensation Methods 0.000 claims abstract description 14
- 239000003034 coal gas Substances 0.000 claims abstract description 8
- 238000007599 discharging Methods 0.000 claims description 22
- 230000001502 supplementing effect Effects 0.000 claims description 12
- 238000001514 detection method Methods 0.000 claims description 5
- 239000007788 liquid Substances 0.000 claims description 5
- 238000004939 coking Methods 0.000 abstract description 5
- 230000008901 benefit Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B39/00—Cooling or quenching coke
- C10B39/04—Wet quenching
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Coke Industry (AREA)
Abstract
The invention belongs to the technical field of wet pressure quenching, and relates to a wet pressure quenching energy recovery system and a wet pressure quenching energy recovery method, which are characterized in that: at least comprises: the coke quenching unit, the water vapor condensation heat exchange unit and the coke quenching water heat exchange unit; the coke quenching unit is used for: extinguishing red hot coke to generate mixed gas of heat, water vapor and coal gas; the water vapor condensation heat exchange unit is used for: separating steam and gas, transferring heat to a heat user, and guiding out the gas for reuse; the quench water heat exchange unit is used for: heat is transferred to the hot user. Is suitable for independent coking enterprises with low requirements on coke moisture content control.
Description
Technical Field
The invention relates to a wet pressure quenching energy recovery system and a wet pressure quenching energy recovery method. Belonging to the technical field of wet pressure quenching.
Background
The wet quenching is a quenching mode commonly adopted in the coking industry, and has the advantages of small energy input, simple operation and convenient operation, and can consume a large amount of coking wastewater. However, the disadvantage is that a great deal of heat is wasted when the air environment is seriously polluted, and as the national energy-saving and environment-friendly requirements become more stringent, the wet quenching is gradually replaced by the dry quenching process, so that the wet quenching process becomes a standby process. Although the dry quenching can fully utilize red Jiao Xianre to generate electricity, the economic benefit is considerable, and the pollution of the quenching to the environment can be basically eliminated, the disposable energy adding is larger, and the transformation of coking enterprises with shortage sites is difficult. Therefore, a proper method is required to be sought to reform the existing wet quenching so as to meet the requirements of energy conservation and environmental protection.
Disclosure of Invention
In order to solve the problems of waste of wet quenching heat energy and environmental pollution, the invention provides a wet pressure quenching energy recovery system which is suitable for independent coking enterprises with low requirements on coke water content control.
The invention aims at realizing the following technical scheme, and discloses a wet pressure quenching energy recovery system, which is characterized in that: at least comprises: the coke quenching unit, the water vapor condensation heat exchange unit and the coke quenching water heat exchange unit;
the coke quenching unit is used for: extinguishing red hot coke to generate mixed gas of heat, water vapor and coal gas;
The water vapor condensation heat exchange unit is used for: separating steam and gas, transferring heat to a heat user, and guiding out the gas for reuse;
the quench water heat exchange unit is used for: heat is transferred to the hot user.
The coke quenching unit comprises a red Jiao Zhucang, a coke quenching tank, a coke discharging device and a mixed gas delivery pipe; the upper part of a quenching pool of the quenching unit is divided into two parts, wherein one part is a gas escape chamber, and the other part is a coke discharge chamber; the port of the coke discharging chamber is connected with a water supplementing pipe of the coke quenching tank, so that the water level of the coke quenching tank is enough to block the gas escaping chamber and the coke discharging chamber, and gas generated by coke quenching cannot escape from the coke discharging chamber; the upper part of the gas escape chamber is connected with a condenser of the vapor condensation heat exchange unit through a mixed gas delivery pipe.
The steam condensation heat exchange unit comprises a condenser, an induced draft fan and a gas delivery pipe; the induced draft fan is arranged on a connecting pipeline of the condenser and the mixed gas delivery pipe and provides negative pressure power; the gas delivery pipe is arranged at the upper part of the condenser, the lower part of the gas delivery pipe is connected with the mixed gas delivery main pipe and the condensate water return pipe, and the condenser is connected with the coke outlet chamber through the condensate water return pipe.
The quench water heat exchange unit comprises a heat exchanger, a quench water circulating pump and a quench water circulating pipeline; the heat exchanger is a heat conduction oil heat exchanger and is connected with a quenching tank of the quenching unit through a quenching water circulation pipeline; the power equipment coke quenching water circulating pump is arranged on the coke quenching water circulating pipeline.
The gas delivery pipe and the condensate return pipe are respectively provided with a first valve group and a second valve group.
The liquid level detection device is added in the coke quenching tank, and the liquid level detection device is interlocked with the water supplementing pipe valve to control the valve switch, so that the water level of the coke quenching tank is used for preventing gas from escaping from the coke discharging chamber and ensuring that the gas generated by coke quenching cannot escape from the coke discharging chamber.
A wet pressure coke quenching energy recovery method is characterized in that: red hot coke enters a coke quenching tank through a gas escape chamber from red Jiao Zhucang, the first valve group, the second valve group and the like are all closed, the water level is ensured to separate the gas escape chamber from a coke outlet chamber through a water supplementing pipe, at the moment, the system is in a closed pressure state, and the mixed gas of water vapor and coal gas generated by coke quenching enters a condenser through the gas escape chamber through a draught fan, exchanges heat with low-temperature water of a heat user, and is condensed into water; after quenching is finished, the first valve group is opened, gas without water vapor is led out from the gas leading-out pipe, the second valve group is opened, and condensed water flows back to a quenching tank or flows to other water consumption points; the extinguished coke is transported out by a coke discharging device; the coke quenching water circulating pump is always turned on, and the high-temperature coke quenching water exchanges heat with low-temperature water of a heat user in the heat exchanger to cool.
The wet quenching method is used for wet quenching under the condition of closed pressure, so that a large amount of coal gas can be recovered, the harmful gas generated by quenching is ensured not to enter air, and the heat of red coke can be collected to the maximum extent.
Drawings
FIG. 1 is a schematic diagram of an embodiment of the present invention.
In the figure: 1. red Jiao Zhucang; 2. quenching pool; 3. a condenser; 4. a heat exchanger; 5. a coke discharging device; 6. a quench water circulation pump; 7. a quench water circulation tube; 8. an induced draft fan; 9. a mixed gas delivery pipe; 10. a gas delivery pipe; 11. a condensed water return pipe; 12. a first valve group; 13. a second valve group; 14. a gas escape chamber; 15. a coke discharging chamber; 16. and a water supplementing pipe of the coke quenching tank.
Detailed Description
The invention is further described below with reference to the drawings and examples.
Example 1
As shown in fig. 1, a wet pressure quenching energy recovery system at least includes: the coke quenching unit, the water vapor condensation heat exchange unit and the coke quenching water heat exchange unit;
the coke quenching unit is used for quenching red hot coke to generate mixed gas of heat, water vapor and coal gas;
The water vapor condensation heat exchange unit is used for: separating steam and gas, transferring heat to a heat user, and guiding out the gas for reuse;
the quench water heat exchange unit is used for: heat is transferred to the hot user.
The coke quenching unit comprises a red Jiao Zhucang, a coke quenching tank 2, a coke discharging device 5 and a mixed gas delivery pipe 9; wherein, the upper part of the quenching tank 2 of the quenching unit is divided into two parts, one part is a gas escape chamber 14, and the other part is a coke outlet chamber 15; the port of the coke discharging chamber 15 is connected with a coke quenching tank water supplementing pipe 16, and the water level of the coke quenching tank water supplementing pipe 16 is enough to ensure that the water level of the coke quenching tank 2 is enough to block the gas escaping chamber 14 and the coke discharging chamber 15, so that gas generated by coke quenching cannot escape from the coke discharging chamber 15; the upper part of the gas escape chamber 14 is connected with the condenser 3 of the water vapor condensation heat exchange unit through the mixed gas delivery pipe 9.
The steam condensation heat exchange unit comprises a condenser 3, an induced draft fan 8 and a gas delivery pipe 10; the induced draft fan 8 is connected with the connecting pipeline of the condenser 3 and the mixed gas outlet pipe 9, and the induced draft fan 8 provides negative pressure power; the gas delivery pipe 10 is arranged at the upper part of the condenser 3, the lower part of the gas delivery pipe 10 is connected with the mixed gas delivery main pipe 9 and the condensate return pipe 11, and the condenser 3 is connected with the coke outlet chamber 15 through the condensate return pipe 11.
The quench water heat exchange unit comprises a heat exchanger 4, a quench water circulating pump 6 and a quench water circulating pipeline 7; the heat exchanger 4 is a heat conduction oil heat exchanger, and the heat exchanger 4 is connected with the quenching tank 2 of the quenching unit through a quenching water circulation pipeline 7; the quench water circulation pipeline 7 is provided with a power equipment quench water circulation pump 6.
The gas delivery pipe 10 and the condensate return pipe 11 are respectively provided with a first valve group 12 and a second valve group 13.
Red hot coke enters the quenching tank 2 from the red Jiao Zhucang through the gas escape chamber 14, the first valve group 12, the second valve group 13 and the like are all closed, the water supplementing pipe 16 ensures that the water level blocks the gas escape chamber 14 and the coke outlet chamber 15, at the moment, the system is in a closed pressure state, and the mixed gas of water vapor and coal gas generated by quenching enters the condenser 3 through the gas escape chamber 14 through the induced draft fan 8, and is condensed into water after heat exchange with low-temperature water of a heat user.
After quenching is finished, the first valve group 12 is opened, gas without water vapor is led out from the gas leading-out pipe 10, the second valve group 13 is opened, and condensed water flows back to the quenching tank 2 or flows to other water consumption points. The quenched coke is carried out by the coke discharging device 5.
The quench water circulating pump 6 is always turned on, and the high-temperature quench water exchanges heat with low-temperature water of a heat user in the heat exchanger 4 to cool.
Example 2
On the basis of the embodiment 1, a liquid level detection device is added in the coke quenching tank 2 and is interlocked with a water supplementing pipe valve to control a valve switch, so that the water level of the coke quenching tank 2 is effectively ensured to be enough to block the gas escape chamber 14 and the coke outlet chamber 15, and the gas generated by coke quenching cannot escape from the coke outlet chamber 15.
The foregoing description of the preferred embodiment of the invention is not intended to limit the invention to the particular form disclosed, but on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.
Claims (4)
1. A wet pressure coke quenching energy recovery system is characterized in that: at least comprises: the coke quenching unit, the water vapor condensation heat exchange unit and the coke quenching water heat exchange unit;
the coke quenching unit is used for: extinguishing red hot coke to generate mixed gas of heat, water vapor and coal gas;
The water vapor condensation heat exchange unit is used for: separating steam and gas, transferring heat to a heat user, and guiding out the gas for reuse;
the quench water heat exchange unit is used for: transferring heat to a hot user;
The coke quenching unit comprises a red Jiao Zhucang (1), a coke quenching tank (2), a coke discharging device (5) and a mixed gas delivery pipe (9); wherein, the upper part of a coke quenching pool (2) of the coke quenching unit is divided into two parts, one part is a gas escape chamber (14), and the other part is a coke discharging chamber (15); the port of the coke discharging chamber (15) is connected with a coke quenching tank water supplementing pipe (16), and the water level of the coke quenching tank water supplementing pipe (16) is enough to ensure that the water level of the coke quenching tank (2) is enough to block the gas escaping chamber (14) and the coke discharging chamber (15), so that gas generated by coke quenching cannot escape from the coke discharging chamber (15); the upper part of the gas escape chamber (14) is connected with a condenser (3) of the water vapor condensation heat exchange unit through a mixed gas delivery pipe (9);
the steam condensation heat exchange unit comprises a condenser (3), an induced draft fan (8) and a gas delivery pipe (10); the induced draft fan (8) is arranged on a connecting pipeline of the condenser (3) and the mixed gas delivery pipe (9), and the induced draft fan (8) provides negative pressure power; the gas delivery pipe (10) is arranged at the upper part of the condenser (3), the lower part of the condenser (3) is connected with the mixed gas delivery main pipe (9) and the condensate water return pipe (11), and the condenser (3) is connected with the coke outlet chamber (15) through the condensate water return pipe (11);
The quench water heat exchange unit comprises a heat exchanger (4), a quench water circulating pump (6) and a quench water circulating pipeline (7); the heat exchanger (4) is a heat conduction oil heat exchanger, and the heat exchanger (4) is connected with a quenching tank (2) of the quenching unit through a quenching water circulation pipeline (7); the coke quenching water circulating pipeline (7) is provided with a power equipment coke quenching water circulating pump (6).
2. The wet pressure quenching energy recovery system as claimed in claim 1, wherein: the gas delivery pipe (10) and the condensate return pipe (11) are respectively provided with a first valve group (12) and a second valve group (13).
3. The wet pressure quenching energy recovery system as claimed in claim 1, wherein: the liquid level detection device is added in the coke quenching tank (2), and the liquid level detection device is interlocked with the water supplementing pipe valve to control the valve switch, so that the water level of the coke quenching tank (2) is used for preventing gas from escaping from the coke discharging chamber (15) due to the gas escaping from the gas escaping chamber (14) and the coke discharging chamber (15).
4. A wet pressure quenching energy recovery method using the system of any one of claims 1-3, characterized by: red and hot coke enters a quenching tank (2) from a red Jiao Zhucang (1) through a gas escape chamber (14), a first valve group (12) and a second valve group (13) are all closed, a water supplementing pipe (16) ensures that the water level blocks the gas escape chamber (14) and a coke discharging chamber (15), at the moment, the system is in a closed state with pressure, and the mixed gas of water vapor and coal gas generated by quenching enters a condenser (3) through the gas escape chamber (14) through a draught fan (8), and is condensed into water after heat exchange with low-temperature water of a hot user; after quenching is finished, a first valve group (12) is opened, gas without water vapor is led out from a gas leading-out pipe (10), a second valve group (13) is opened, and condensed water flows back to a quenching tank (2) or flows to other water consumption points; the extinguished coke is carried out by a coke outlet device (5); the coke quenching water circulating pump (6) is always opened, and the high-temperature coke quenching water exchanges heat with low-temperature water of a heat user in the heat exchanger (4) to reduce the temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810359715.4A CN110205145B (en) | 2018-04-20 | 2018-04-20 | Wet pressure quenching energy recovery system and method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810359715.4A CN110205145B (en) | 2018-04-20 | 2018-04-20 | Wet pressure quenching energy recovery system and method |
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| CN110205145A CN110205145A (en) | 2019-09-06 |
| CN110205145B true CN110205145B (en) | 2024-05-28 |
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| BE835589A (en) * | 1974-11-14 | 1976-03-01 | METHOD AND DEVICE FOR WET COKE EXTINGUISHING AND SIMULTANEOUS RECOVERY OF GAS TO WATER | |
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