CN212215533U - Energy-conserving process systems of active carbon regeneration for purification waste water - Google Patents
Energy-conserving process systems of active carbon regeneration for purification waste water Download PDFInfo
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- CN212215533U CN212215533U CN202020642619.3U CN202020642619U CN212215533U CN 212215533 U CN212215533 U CN 212215533U CN 202020642619 U CN202020642619 U CN 202020642619U CN 212215533 U CN212215533 U CN 212215533U
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Abstract
The utility model discloses an active carbon regeneration energy-saving process system for purifying wastewater, which comprises a saturated carbon temporary storage tank (3), a dewatering screw conveyor (4), a rotary drying furnace (5), a bucket elevator (6), a saturated carbon feeding tank (7), a quantitative feeder (8), a multi-section rake type regeneration furnace (9), a secondary combustion chamber (10) and a waste heat boiler (11); saturated charcoal groove (3) of keeping in is located dewatering screw conveyer (4) top, saturated charcoal groove (3) bottom of keeping in is connected with dewatering screw conveyer (4) feed inlet, dewatering screw conveyer (4) discharge gate is connected with rotation drying furnace (5) front end feed inlet, rotation drying furnace (5) rear end discharge gate is connected through conveying equipment and fill lifting machine (6) bottom feed inlet. The utility model relates to a rationally, fine practical application is worth having.
Description
Technical Field
The utility model relates to an active carbon regeneration technical field specifically is an active carbon regeneration energy-saving process system for purifying waste water.
Background
With the increasing environmental protection strength in China, the usage amount of the activated carbon in China is increasing day by day, and the activated carbon is used as a renewable environment-friendly adsorption material and is widely applied in the fields of urban drinking water, municipal wastewater, industrial wastewater and the like. The active carbon regeneration in the field of water treatment mainly adopts the traditional thermal regeneration technology, the operation energy consumption is very high, and the regeneration cost of each ton of active carbon is 2000-3000 yuan. Therefore, how to reduce the operation cost in the thermal regeneration process of activated carbon has become a focus of attention of users and operation enterprises.
Disclosure of Invention
The utility model aims at providing a purify energy-conserving processing system of active carbon regeneration for waste water carries out energy-conserving transformation to current multistage rake furnace regeneration active carbon processing system, reduces the running cost that the active carbon regenerates.
The utility model discloses an adopt following technical scheme to realize:
an active carbon regeneration energy-saving process system for purifying wastewater comprises a saturated carbon temporary storage tank, a dewatering screw conveyor, a rotary drying furnace, a bucket elevator, a saturated carbon feeding tank, a constant feeder, a multi-section rake type regeneration furnace, a secondary combustion chamber and a waste heat boiler.
The saturated carbon temporary storage tank is positioned above the dewatering screw conveyor, the bottom of the saturated carbon temporary storage tank is connected with the feed inlet of the dewatering screw conveyor, the discharge hole of the dewatering screw conveyor is connected with the front end feed inlet of the rotary drying furnace, the rear end discharge hole of the rotary drying furnace is connected with the bottom feed inlet of the bucket elevator through conveying equipment, the top discharge port of the bucket elevator is connected with the top inlet of the saturated carbon feeding groove, the lower outlet of the saturated carbon feeding groove is connected with the inlet of the constant feeder, the outlet of the constant feeder is connected with the material inlet of the multi-section rake type regenerating furnace, the waste gas outlet of the multi-section rake type regenerating furnace is connected with the inlet of the secondary combustion chamber, the outlet of the secondary combustion chamber is connected with the high-temperature flue gas inlet of the waste heat boiler, and the steam outlet of the waste heat boiler is connected with the steam inlet at the front end of the rotary drying furnace and the steam inlet of the multi-section rake type regeneration furnace through pipelines respectively.
When the system is applied, after the adsorption tower with the activated carbon for purifying the wastewater is used, the purified wastewater in the adsorption tower is conveyed to the hydraulic conveying and blowing tank by the activated carbon and then enters the activated carbon regeneration energy-saving process system for purifying the wastewater for treatment.
The processing process is as follows: firstly, conveying activated carbon for water treatment with saturated adsorption to a temporary saturated carbon storage tank by utilizing a hydraulic conveying mode, wherein the bottom of the temporary saturated carbon storage tank is connected with a dewatering screw conveyor, the saturated carbon and water are discharged from the bottom of the temporary saturated carbon storage tank and enter the dewatering screw conveyor, the moisture of the saturated activated carbon is removed to about 50%, and then the saturated activated carbon is conveyed to a rotary drying furnace connected with the dewatering screw conveyor; the waste heat boiler of the tail gas treatment part is connected with the front end of a rotary drying furnace, excessive high-temperature steam (185 ℃) generated by the waste heat boiler enters the drying furnace along with saturated activated carbon, and the saturated activated carbon is dried (1.5 tons of high-temperature steam is needed for each ton of activated carbon) to the water content of below 20 percent, wherein the drying temperature is 120 ℃; the dried saturated activated carbon is conveyed to a saturated carbon feeding groove through a bucket elevator and then conveyed to a multi-section rake type regenerating furnace through a quantitative feeder to be regenerated, water vapor required by activation and regeneration comes from a waste heat boiler, flue gas generated in the regeneration process of the multi-section rake type regenerating furnace is introduced into a secondary combustion chamber to be thoroughly combusted, and high-temperature flue gas enters a preheating boiler to be subjected to heat recovery to generate excessive high-temperature steam and then is conveyed to a rotary drying furnace.
The system adopts the excessive steam generated by the regeneration waste heat boiler to replace the natural gas required by the drying of the moisture of the activated carbon, and can reduce the regeneration cost of the activated carbon by about 360 yuan per ton. Thereby reducing the operation cost of the regeneration process of the activated carbon for water treatment and improving the market competitiveness.
The utility model relates to a rationally, fine practical application is worth having.
Drawings
Fig. 1 shows a schematic connection diagram of the present invention.
In the figure: 1-an adsorption tower, 2-a hydraulic conveying and blowing tank, 3-a saturated carbon temporary storage tank, 4-a dewatering spiral conveyor, 5-a rotary drying furnace, 6-a bucket elevator, 7-a saturated carbon feeding tank, 8-a quantitative feeder, 9-a multi-section rake type regeneration furnace, 10-a secondary combustion chamber and 11-a waste heat boiler.
Detailed Description
The following describes in detail specific embodiments of the present invention with reference to the accompanying drawings.
An energy-saving active carbon regeneration process system for purifying wastewater is shown in figure 1 and comprises a saturated carbon temporary storage tank 3, a dewatering screw conveyor 4, a rotary drying furnace 5, a bucket elevator 6, a saturated carbon feeding tank 7, a constant feeder 8, a multi-section rake type regeneration furnace 9, a secondary combustion chamber 10 and a waste heat boiler 11.
The specific connection relationship is as follows: the saturated carbon temporary storage tank 3 is positioned above the dewatering screw conveyor 4, the bottom of the saturated carbon temporary storage tank 3 is connected with a feed inlet of the dewatering screw conveyor 4, a discharge outlet of the dewatering screw conveyor 4 is connected with a feed inlet at the front end of the rotary drying furnace 5, a discharge outlet at the rear end of the rotary drying furnace 5 is connected with a feed inlet at the bottom of the bucket elevator 6 through conveying equipment, a discharge outlet at the top of the bucket elevator 6 is connected with an inlet at the top of the saturated carbon feed tank 7, an outlet at the lower part of the saturated carbon feed tank 7 is connected with an inlet of a quantitative feeder 8, an outlet of the quantitative feeder 8 is connected with a material inlet of a multi-section rake type regeneration furnace 9, a waste gas outlet of the multi-section rake type regeneration furnace 9 is connected with an inlet of a secondary combustion chamber 10, an outlet of the secondary combustion chamber 10 is connected with a high-temperature flue gas inlet of a waste heat boiler 11, and introducing the low-temperature flue gas of the waste heat boiler 11 into subsequent tail gas treatment equipment.
In the process of regenerating the activated carbon, a waste heat boiler 11 is arranged in a tail gas secondary combustion chamber 10, the generated high-temperature steam is mainly used in an activation section of a multi-section rake type regeneration furnace 9 in the regeneration process, the steam has the surplus, and the surplus steam is used as a heat source and is input into a rotary drying furnace 5 to replace most natural gas in the drying process to remove moisture.
The water content of the purified wastewater is generally 50-60% after being saturated by the activated carbon, the water-containing activated carbon is directly regenerated at the moment, and the energy consumption required by the high water content is very high, so that the water content of the activated carbon is controlled within 15% before entering a regeneration furnace, and the operation energy consumption of the activated carbon during regeneration can be greatly reduced. The main process comprises the following steps: carrying out spiral dehydration on saturated carbon, drying and dehydrating, and regenerating at high temperature. The main equipment is a dewatering screw conveyer, a rotary drying furnace, a bucket elevator, a constant feeder, a multi-section rake furnace, a secondary combustion chamber and a waste heat boiler.
When the system is used specifically, after the adsorption tower 1 with the activated carbon for purifying the wastewater is used, the activated carbon for purifying the wastewater in the adsorption tower 1 is conveyed into the hydraulic conveying and blowing tank 2, and then enters the activated carbon regeneration energy-saving process system for purifying the wastewater for treatment.
The main processing process is as follows: firstly, conveying activated carbon for water treatment with saturated adsorption to a temporary saturated carbon storage tank 3 by a hydraulic conveying mode (the saturated activated carbon is discharged from the bottom of the adsorption through gravity, a process water conveying pipeline is arranged at the bottom of the adsorption tower, the activated carbon is discharged to a waste carbon tank in a water scouring mode, the carbon-water ratio is 1: 3), the bottom of the temporary saturated carbon storage tank is connected with a dewatering screw conveyor 4, the saturated carbon and water are discharged from the bottom of the temporary saturated carbon storage tank 3 and enter the dewatering screw conveyor 4, the moisture of the saturated activated carbon is removed to about 50 percent, and then the activated carbon is conveyed to a drying furnace 5 connected with the dewatering screw conveyor 4; the waste heat boiler 11 of the tail gas treatment part is connected with the front end of the rotary drying furnace 5, excessive high-temperature steam (185 ℃) generated by the waste heat boiler 11 enters the rotary drying furnace 5 along with saturated activated carbon, and the saturated activated carbon is dried (1.5 tons of high-temperature steam are needed for each ton of activated carbon) to the water content of less than 20 percent, wherein the drying temperature is 120 ℃; the dried saturated activated carbon is conveyed to a saturated carbon feeding groove 7 through a bucket elevator 6, then conveyed to a multi-section rake type regeneration furnace 9 through a constant feeder 8 for regeneration, flue gas generated in the regeneration process of the multi-section rake type regeneration furnace 9 is introduced into a secondary combustion chamber 10 for complete combustion, and high-temperature flue gas enters a preheating boiler 11 for heat recovery to generate excessive high-temperature steam and then is conveyed to a rotary drying furnace 5.
This purify energy-conserving process systems of active carbon regeneration for waste water utilizes the high temperature excess steam that the exhaust-heat boiler of active carbon regeneration produced, dries saturated active carbon, reduces saturated active carbon moisture content, introduces the heat of the excess steam that the exhaust-heat boiler produced to the rotation drying-oven and carries out the drying before the active carbon feeding, replaces the required natural gas of active carbon moisture stoving, accords with the requirement of national low carbon energy-concerving and environment-protective policy, and the high temperature steam that the exhaust-heat boiler produced can replace 70m per ton3The heat generated by the natural gas saves the operation cost of about 360 yuan per ton of the activated carbon.
The above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred examples, those skilled in the art should understand that modifications or equivalent substitutions can be made by referring to the technical solutions of the present invention without departing from the scope of the present invention, and all should be considered as included in the claims of the present invention.
Claims (1)
1. An active carbon regeneration energy-saving process system for purifying wastewater is characterized in that: comprises a saturated carbon temporary storage tank (3), a dewatering screw conveyor (4), a rotary drying furnace (5), a bucket elevator (6), a saturated carbon feeding tank (7), a constant feeder (8), a multi-section rake type regeneration furnace (9), a secondary combustion chamber (10) and a waste heat boiler (11);
the saturated carbon temporary storage tank (3) is positioned above the dewatering screw conveyor (4), the bottom of the saturated carbon temporary storage tank (3) is connected with the feed inlet of the dewatering screw conveyor (4), the discharge outlet of the dewatering screw conveyor (4) is connected with the front end feed inlet of the rotary drying furnace (5), the rear end discharge outlet of the rotary drying furnace (5) is connected with the bottom feed inlet of the bucket elevator (6) through conveying equipment, the top discharge outlet of the bucket elevator (6) is connected with the top inlet of the saturated carbon feed tank (7), the lower outlet of the saturated carbon feed tank (7) is connected with the inlet of a quantitative feeder (8), the outlet of the quantitative feeder (8) is connected with the material inlet of the multi-section rake regeneration furnace (9), the waste gas outlet of the multi-section rake regeneration furnace (9) is connected with the inlet of a secondary combustion chamber (10), the outlet of the secondary combustion chamber (10) is connected with the high-temperature flue gas inlet of a waste heat boiler (11), and a steam outlet of the waste heat boiler (11) is respectively connected with a steam inlet at the front end of the rotary drying furnace (5) and a steam inlet of the multi-section rake type regenerating furnace (9) through pipelines.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116251576A (en) * | 2023-04-10 | 2023-06-13 | 宝武水务科技有限公司 | Feeding preheating and drying device, system and method of activated carbon regenerating furnace |
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2020
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116251576A (en) * | 2023-04-10 | 2023-06-13 | 宝武水务科技有限公司 | Feeding preheating and drying device, system and method of activated carbon regenerating furnace |
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