CN213853131U - Ceramic powder drying tail gas recirculation system - Google Patents
Ceramic powder drying tail gas recirculation system Download PDFInfo
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- CN213853131U CN213853131U CN202022602500.6U CN202022602500U CN213853131U CN 213853131 U CN213853131 U CN 213853131U CN 202022602500 U CN202022602500 U CN 202022602500U CN 213853131 U CN213853131 U CN 213853131U
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- tail gas
- heat medium
- temperature flue
- reheater
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Abstract
The utility model discloses a dry tail gas recirculation system of pottery powder, including hot-blast furnace, high temperature flue and spray drying tower, the exhanst gas outlet of hot-blast furnace is connected to the heat source import of spray drying tower through the high temperature flue, be provided with exhaust emission pipeline on the drying tower, its characterized in that: the tail gas emission pipeline is connected with a dust remover, the dust remover is connected with an induced draft fan through a low-temperature flue, the induced draft fan is simultaneously connected with a chimney and a primary cooler through the low-temperature flue, a tail gas outlet of the primary cooler is connected with a dryer, a tail gas outlet of the dryer is connected with a reheater, and a gas outlet of the reheater is connected with a high-temperature flue; the heat medium outlet of the primary cooler is connected with the heat medium inlet of the reheater, and the heat medium inlet of the primary cooler is connected with the heat medium outlet of the reheater through a heat medium pipeline. The problems of unstable water content of products and high energy consumption of ceramic powder production in the prior art are solved.
Description
Technical Field
The utility model relates to a dry tail gas recirculation system of pottery powder belongs to the energy-conserving field that subtracts of ceramic trade spray drying system.
Background
At present, most ceramic industries in China adopt a cold air mixing mode of a hot blast stove to provide drying heat for a spray drying system. The drying temperature of the spray drying system is 400-plus-500 ℃, the hot blast stove takes fuel gas or coal water slurry as fuel, high-temperature flue gas with the temperature of about 1000 ℃ is generated and is connected to the vicinity of the spray drying tower through a high-temperature flue, the outside atmosphere enters the high-temperature flue through a cold blast valve and a cold blast branch pipe, is mixed with the high-temperature flue gas and reduces the temperature of the flue gas to 500 ℃, the flue gas enters the spray drying tower and is mixed with ceramic powder slurry, the temperature of the high-temperature flue gas after the slurry moisture is evaporated is about 150 ℃, and the high-temperature flue gas is directly discharged to the atmosphere after being filtered by a bag-type dust collector.
The heating process of the hot blast stove mixed with cold air causes that the influence of the drying temperature in the spray drying tower is larger along with the outdoor air temperature, although the influence of the outdoor temperature can be adjusted and reduced by a system additionally provided with a temperature control device, the stability of the water content of the dry powder cannot be ensured by adjusting the hysteresis, the periodicity and the adjusting precision of the hot blast stove mixed with cold air, and the quality of finished products of ceramic products is finally influenced.
Because outdoor atmospheric temperature is lower, the air temperature inhaled through the cold air branch pipe will increase hot-blast stove heat supply load to reach the stoving requirement, and hot-blast stove heat supply increases, leads to spray drying system energy consumption higher, and the middle temperature tail gas direct discharge of hot-blast stove leads to the very big waste of heat energy simultaneously.
SUMMERY OF THE UTILITY MODEL
To the technical problem, an object of the utility model is to provide a dry tail gas recirculation system of pottery powder solves prior art at unstable and the high problem of pottery powder production energy consumption of product moisture content.
In order to realize the purpose, the technical scheme of the utility model is that: the utility model provides a dry tail gas recirculation system of pottery powder, includes hot-blast furnace, high temperature flue and spray drying tower, the exhanst gas outlet of hot-blast furnace is connected to the heat source import of spray drying tower through high temperature flue, the last tail gas emission pipeline that is provided with of spray drying tower, its characterized in that: the tail gas emission pipeline is connected with a dust remover, the dust remover is connected with an induced draft fan through a low-temperature flue, the induced draft fan is simultaneously connected with a chimney and a primary cooler through the low-temperature flue, a tail gas outlet of the primary cooler is connected with a dryer, a tail gas outlet of the dryer is connected with a reheater, and a gas outlet of the reheater is connected with a high-temperature flue; the heat medium outlet of the primary cooler is connected with the heat medium inlet of the reheater, and the heat medium inlet of the primary cooler is connected with the heat medium outlet of the reheater through a heat medium pipeline.
In the scheme, the method comprises the following steps: and a heat medium pump is arranged on the heat medium pipeline.
By adopting the scheme, tail gas (the temperature is about 150 ℃) from a spray drying tower enters a dust remover to be filtered, the filtered clean tail gas enters a draught fan through a low-temperature flue to be pressurized and then is sent to a primary cooler, the tail gas after being cooled by circulating water (to about 50 ℃) enters a dryer to remove excessive moisture, the dehumidified tail gas is sent to a reheater to be heated (to about 130 ℃), the heated flue gas is connected to a high-temperature flue through a circulating flue, the high-temperature flue gas is mixed with the high-temperature flue gas and then is cooled to 400 ℃ and 500 ℃ to enter the spray drying tower. The heat medium heated by the primary cooler is connected to the reheater, is cooled by the reheater, is connected to the heat medium pump through the heat medium pipeline for pressurization, and is sent back to the primary cooler for recycling. No additional heat energy is needed.
In the scheme, the method comprises the following steps: the bottom of the dryer is provided with a condensed water pipeline, and a drain valve is arranged on the condensed water pipeline. When the water quantity or the water pressure in the dryer reaches a set value, the drain valve is opened and the water removed is discharged through the condensed water pipeline.
Has the advantages that: the utility model discloses a to the recycle of spray drying tower tail gas, utilize tail gas to come to mix with the high temperature flue gas, reduce the temperature of high temperature flue gas, can guarantee like this that the flue gas temperature who gets into in the spray drying tower does not receive the ambient temperature influence, tail gas is heated at the recovery in-process simultaneously, can reduce the consumption of high temperature flue gas, reduces the energy consumption. Additionally the utility model discloses a to the recycle of spray drying tower tail gas, utilize the moisture of desicator in with tail gas to get rid of, can reduce external moisture and get into the spray drying tower for the product moisture content is stable. The utility model discloses mainly be suitable for the dry recycling occasion of ceramic technology, also can be used to other process gas and deviate from moisture and cyclic utilization's occasion, especially process gas recycle under large-traffic, the high humidity condition.
Drawings
Fig. 1 is a flow chart of the present invention.
Detailed Description
The invention will be further described by way of examples with reference to the accompanying drawings:
example 1, as shown in fig. 1, a ceramic powder drying tail gas recirculation system is composed of a hot blast stove 1, a high-temperature flue 2, a spray drying tower 3, a dust remover 4, an induced draft fan 5, a chimney 6, a primary cooler 7, a dryer 8, a reheater 9, a condensed water pipeline 10, a drain valve 11 and a heat medium pump 12.
The exhanst gas outlet of hot-blast furnace 1 is connected to the heat source import of spray drying tower 3 through high temperature flue 2, is provided with the exhaust emission pipeline on the drying tower 3, and the exhaust emission pipeline links to each other with dust remover 4, and dust remover 4 links to each other with draught fan 5 through low temperature flue, and draught fan 5 links to each other with chimney 6 and primary cooler 7 simultaneously through low temperature flue, is provided with the valve on the pipeline that draught fan 5 and chimney 6 and primary cooler 7 link to each other. The tail gas outlet of the primary cooler 7 is connected with the dryer 8, the bottom of the dryer 8 is provided with a condensed water pipeline 10, and a drain valve 11 is arranged on the condensed water pipeline 10. Moisture is removed in the dryer 8, a tail gas outlet of the dryer 8 is connected with the reheater 9, and a gas outlet of the reheater 9 is connected with the high-temperature flue 2 through a pipeline. The heat medium outlet of the primary cooler 7 is connected with the heat medium inlet of the reheater 9, and the heat medium inlet of the primary cooler 7 is connected with the heat medium outlet of the reheater 9 through a heat medium pipeline. A heat medium pump 12 is provided on the heat medium pipe.
Tail gas (the temperature is about 150 ℃) from a spray drying tower 3 enters a dust remover 4 for filtering, the filtered clean tail gas enters a draught fan 5 through a low-temperature flue and is pressurized and then sent to a primary cooler 7, the tail gas after cooling by circulating water (to about 50 ℃) enters a dryer 8 for removing excessive moisture, the dehumidified tail gas is sent to a reheater 9 for heating (to about 130 ℃), the heated tail gas is connected to a high-temperature flue, and the high-temperature flue gas is mixed with the high-temperature flue gas and then is cooled to 400 ℃ and 500 ℃ and then enters the spray drying tower 3. The heat medium heated by the primary cooler 7 is connected to the reheater 9, cooled by the reheater 9, and then connected to the heat medium pump 12 through a heat medium pipeline for pressurization, and then sent back to the primary cooler 7 for recycling. No additional heat energy is needed.
The present invention is not limited to the above embodiments, and those skilled in the art can understand that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (3)
1. The utility model provides a dry tail gas recirculation system of pottery powder, includes hot-blast furnace, high temperature flue and spray drying tower, the exhanst gas outlet of hot-blast furnace is connected to the heat source import of spray drying tower through high temperature flue, the last tail gas emission pipeline that is provided with of spray drying tower, its characterized in that: the tail gas emission pipeline is connected with a dust remover, the dust remover is connected with an induced draft fan through a low-temperature flue, the induced draft fan is simultaneously connected with a chimney and a primary cooler through the low-temperature flue, a tail gas outlet of the primary cooler is connected with a dryer, a tail gas outlet of the dryer is connected with a reheater, and a gas outlet of the reheater is connected with a high-temperature flue; the heat medium outlet of the primary cooler is connected with the heat medium inlet of the reheater, and the heat medium inlet of the primary cooler is connected with the heat medium outlet of the reheater through a heat medium pipeline.
2. The ceramic powder drying tail gas recycling system according to claim 1, characterized in that: and a heat medium pump is arranged on the heat medium pipeline.
3. The ceramic powder drying tail gas recycling system according to claim 1 or 2, characterized in that: the bottom of the dryer is provided with a condensed water pipeline, and a drain valve is arranged on the condensed water pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022602500.6U CN213853131U (en) | 2020-11-11 | 2020-11-11 | Ceramic powder drying tail gas recirculation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022602500.6U CN213853131U (en) | 2020-11-11 | 2020-11-11 | Ceramic powder drying tail gas recirculation system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213853131U true CN213853131U (en) | 2021-08-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202022602500.6U Active CN213853131U (en) | 2020-11-11 | 2020-11-11 | Ceramic powder drying tail gas recirculation system |
Country Status (1)
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| CN (1) | CN213853131U (en) |
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2020
- 2020-11-11 CN CN202022602500.6U patent/CN213853131U/en active Active
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