CN211079033U - Process device for realizing coal dry distillation by using high-temperature flue gas of coal-fired power generation boiler - Google Patents
Process device for realizing coal dry distillation by using high-temperature flue gas of coal-fired power generation boiler Download PDFInfo
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- CN211079033U CN211079033U CN201920808564.6U CN201920808564U CN211079033U CN 211079033 U CN211079033 U CN 211079033U CN 201920808564 U CN201920808564 U CN 201920808564U CN 211079033 U CN211079033 U CN 211079033U
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Abstract
A process unit for realizing coal dry distillation by using high-temperature flue gas of a coal-fired power generation boiler is characterized in that: the process device comprises a coal-fired power generation boiler, a high-temperature flue gas channel, a coal dry distillation device, a flue gas channel after dry distillation and a flow control valve, wherein one end of the high-temperature flue gas channel is connected with the coal-fired power generation boiler, and the other end of the high-temperature flue gas channel is connected with the coal dry distillation device; one end of the smoke channel after dry distillation is connected with the coal-fired power generation boiler, and the other end of the smoke channel after dry distillation is connected with the coal dry distillation device; the flow control valve is arranged on the smoke channel after dry distillation.
Description
The technical field is as follows:
the utility model belongs to coal fired power boiler combines application field with the clean utilization of coal dry distillation, concretely relates to utilize coal fired power boiler high temperature flue gas to realize process units of coal dry distillation.
Background art:
the traditional coal dry distillation technology mostly adopts decomposed coal gas combustion heating in the dry distillation process, generally 40-50% of coal gas is consumed for self dry distillation heating, a large amount of coal gas resources are wasted, and if the heat of high-temperature flue gas of a coal-fired power generation boiler is adopted to replace the heat supply of the decomposed coal gas combustion in the dry distillation process, the original coal gas for dry distillation is replaced, the coal gas productivity can be increased by about one time.
The utility model has the following contents:
1. based on above-mentioned current situation, the utility model provides an utilize coal fired power boiler high temperature flue gas to realize process units of coal dry distillation, its characterized in that: the process device comprises a coal-fired power generation boiler, a high-temperature flue gas channel, a coal dry distillation device, a flue gas channel after dry distillation and a flow control valve, wherein one end of the high-temperature flue gas channel is connected with the coal-fired power generation boiler, and the other end of the high-temperature flue gas channel is connected with the coal dry distillation device; one end of the smoke channel after dry distillation is connected with the coal-fired power generation boiler, and the other end of the smoke channel after dry distillation is connected with the coal dry distillation device; the flow control valve is arranged on the smoke channel after dry distillation.
The further technical scheme is that one end of the high-temperature flue gas channel is connected to the upper part of the hearth of the coal-fired power generation boiler, the other end of the high-temperature flue gas channel is connected with the coal dry distillation device, the high-temperature flue gas channel is composed of wear-resistant and heat-insulating materials capable of bearing the temperature of more than 1000 ℃, and part of high-temperature flue gas of the coal-fired power generation boiler led out from the high-temperature flue gas.
According to a further technical scheme, one end of the smoke channel after dry distillation is connected with the original main flue in front of the SCR of the coal-fired power generation boiler, the other end of the smoke channel after dry distillation is connected with the flue of the coal dry distillation device, and smoke generated after coal dry distillation enters the original main flue in front of the SCR of the coal-fired power generation boiler through the smoke channel after dry distillation.
The further technical scheme is that the flow control valve is arranged on the smoke channel after the dry distillation, and the flow of the high-temperature smoke can be adjusted according to the heat required by the coal dry distillation device.
By adopting the scheme, the device leads out part of high-temperature flue gas with the flue gas temperature of more than 1000 ℃ at the upper part of the hearth of the coal-fired power generation boiler, and the high-temperature flue gas enters the coal carbonization device through the high-temperature flue gas channel to provide heat for carbonization of coal in the coal carbonization device, replace the heat supply amount generated by decomposing coal gas in the original carbonization process, replace the coal gas used for carbonization, and increase the coal gas productivity. The smoke temperature of the smoke after dry distillation is less than 400 ℃, the smoke channel after dry distillation is connected to the original main flue in front of the SCR of the coal-fired power generation boiler, the smoke temperature after dry distillation should meet the normal operation requirement of the SCR, and if the smoke temperature after dry distillation does not meet the operation requirement of the SCR, the smoke temperature after dry distillation can be increased through the oxygen-enriched combustion smoke under-temperature compensation device, so that the normal operation requirement of the SCR is met. The device does not consume the coal gas decomposed in the coal carbonization process, does not waste energy, can convert all heat energy in the raw coal into heat energy of coal gas, tar and shaped carbon (semi coke), has no heat energy loss, and increases the coal gas capacity by about one time; meanwhile, the high-temperature flue gas after dry distillation returns to the front of the environment-friendly device of the main flue of the coal-fired power generation boiler, so that no waste gas is discharged in the coal dry distillation process.
Drawings
FIG. 1 is a flow chart of the process of the present invention
Detailed Description
The following describes the present invention with reference to the following embodiments and drawings.
2. As shown in figure 1, based on above-mentioned current situation, the utility model provides an utilize coal fired power boiler high temperature flue gas to realize process units of coal dry distillation, its characterized in that: the process device comprises a coal-fired power generation boiler, a high-temperature flue gas channel, a coal dry distillation device, a flue gas channel after dry distillation and a flow control valve, wherein one end of the high-temperature flue gas channel is connected with the coal-fired power generation boiler, and the other end of the high-temperature flue gas channel is connected with the coal dry distillation device; one end of the smoke channel after dry distillation is connected with the coal-fired power generation boiler, and the other end of the smoke channel after dry distillation is connected with the coal dry distillation device; the flow control valve is arranged on the smoke channel after dry distillation.
One end of the high-temperature flue gas channel is connected to the upper part of the hearth of the coal-fired power generation boiler, the other end of the high-temperature flue gas channel is connected with the coal dry distillation device, the high-temperature flue gas channel is composed of wear-resistant and heat-insulating materials capable of bearing the temperature of more than 1000 ℃, and part of high-temperature flue gas of the coal-fired power generation boiler led out from the high-temperature flue gas.
One end of the smoke channel after dry distillation is connected with the original main flue before the SCR of the coal-fired power generation boiler, the other end of the smoke channel after dry distillation is connected with the flue of the coal dry distillation device, and smoke generated after coal dry distillation enters the original main flue before the SCR of the coal-fired power generation boiler through the smoke channel after dry distillation.
The flow control valve is arranged on the smoke channel after dry distillation, and can adjust the flow of high-temperature smoke according to the heat required by the coal dry distillation device.
By adopting the scheme, the device leads out part of high-temperature flue gas with the flue gas temperature of more than 1000 ℃ at the upper part of the hearth of the coal-fired power generation boiler, and the high-temperature flue gas enters the coal carbonization device through the high-temperature flue gas channel to provide heat for carbonization of coal in the coal carbonization device, replace the heat supply amount generated by decomposing coal gas in the original carbonization process, replace the coal gas used for carbonization, and increase the coal gas productivity. The smoke temperature of the smoke after dry distillation is less than 400 ℃, the smoke channel after dry distillation is connected to the original main flue in front of the SCR of the coal-fired power generation boiler, the smoke temperature after dry distillation should meet the normal operation requirement of the SCR, and if the smoke temperature after dry distillation does not meet the operation requirement of the SCR, the smoke temperature after dry distillation can be increased through the oxygen-enriched combustion smoke under-temperature compensation device, so that the normal operation requirement of the SCR is met. The device does not consume the coal gas decomposed in the coal carbonization process, does not waste energy, can convert all heat energy in the raw coal into heat energy of coal gas, tar and shaped carbon (semi coke), has no heat energy loss, and increases the coal gas capacity by about one time; meanwhile, the high-temperature flue gas after dry distillation returns to the front of the environment-friendly device of the main flue of the coal-fired power generation boiler, so that no waste gas is discharged in the coal dry distillation process.
The utility model discloses an use coal-fired power generation boiler as the platform, the heat of make full use of coal-fired power generation high temperature flue gas replaces traditional coal dry distillation technique to use the dry distillation process to decompose the heat that the buggy was burnt, practices thrift 40% ~ 50% coal gas, greatly increased coal dry distillation coal gas productivity, and the dry distillation process does not have the heat energy loss, accords with the relevant development policy of country.
In addition to the methods disclosed in this example, other embodiments related thereto are also within the scope of the present application.
Claims (4)
1. A process unit for realizing coal dry distillation by using high-temperature flue gas of a coal-fired power generation boiler is characterized in that: the process device comprises a coal-fired power generation boiler, a high-temperature flue gas channel, a coal dry distillation device, a flue gas channel after dry distillation and a flow control valve, wherein one end of the high-temperature flue gas channel is connected with the coal-fired power generation boiler, and the other end of the high-temperature flue gas channel is connected with the coal dry distillation device; one end of the smoke channel after dry distillation is connected with the coal-fired power generation boiler, and the other end of the smoke channel after dry distillation is connected with the coal dry distillation device; the flow control valve is arranged on the smoke channel after dry distillation.
2. The process unit for realizing the dry distillation of the coal by utilizing the high-temperature flue gas of the coal-fired power generation boiler as claimed in claim 1, characterized in that: one end of the high-temperature flue gas channel is connected to the upper part of the hearth of the coal-fired power generation boiler, the other end of the high-temperature flue gas channel is connected with the coal dry distillation device, the high-temperature flue gas channel is composed of wear-resistant and heat-insulating materials capable of bearing the temperature of more than 1000 ℃, and part of high-temperature flue gas of the coal-fired power generation boiler led out from the high-temperature flue gas.
3. The process unit for realizing the dry distillation of the coal by utilizing the high-temperature flue gas of the coal-fired power generation boiler as claimed in claim 1, characterized in that: one end of the smoke channel after dry distillation is connected with the original main flue before the SCR of the coal-fired power generation boiler, the other end of the smoke channel after dry distillation is connected with the flue of the coal dry distillation device, and smoke generated after coal dry distillation enters the original main flue before the SCR of the coal-fired power generation boiler through the smoke channel after dry distillation.
4. The process unit for realizing the dry distillation of the coal by utilizing the high-temperature flue gas of the coal-fired power generation boiler as claimed in claim 1, characterized in that: the flow control valve is arranged on the smoke channel after dry distillation, and can adjust the flow of high-temperature smoke according to the heat required by the coal dry distillation device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920808564.6U CN211079033U (en) | 2019-05-31 | 2019-05-31 | Process device for realizing coal dry distillation by using high-temperature flue gas of coal-fired power generation boiler |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920808564.6U CN211079033U (en) | 2019-05-31 | 2019-05-31 | Process device for realizing coal dry distillation by using high-temperature flue gas of coal-fired power generation boiler |
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| CN211079033U true CN211079033U (en) | 2020-07-24 |
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| CN201920808564.6U Active CN211079033U (en) | 2019-05-31 | 2019-05-31 | Process device for realizing coal dry distillation by using high-temperature flue gas of coal-fired power generation boiler |
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| CN (1) | CN211079033U (en) |
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2019
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