CN215336353U - Energy-conserving efficient sludge drying incineration disposal equipment - Google Patents
Energy-conserving efficient sludge drying incineration disposal equipment Download PDFInfo
- Publication number
- CN215336353U CN215336353U CN202121628137.3U CN202121628137U CN215336353U CN 215336353 U CN215336353 U CN 215336353U CN 202121628137 U CN202121628137 U CN 202121628137U CN 215336353 U CN215336353 U CN 215336353U
- Authority
- CN
- China
- Prior art keywords
- drying
- sludge
- tower
- incinerating
- dust collector
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
The utility model discloses energy-saving and efficient sludge drying and incinerating treatment equipment which comprises a sludge storage tank, wherein one end of the sludge storage tank is connected with a sludge screw pump, one end of the sludge screw pump is connected with a drying and incinerating tower, the lower end of the drying and incinerating tower is connected with a rotary kiln, the front end and the rear end of the rotary kiln are provided with a fan and a burner, the right end of the drying and incinerating tower is connected with a cyclone dust collector, the upper end of the cyclone dust collector is connected with a dry deacidification tower, one end of the dry deacidification tower is connected with a bag-type dust collector, a combustion-supporting air preheater is arranged behind the bag-type dust collector, one end of the bag-type dust collector is connected with a waste gas incinerator, the upper part of the waste gas incinerator is provided with the burner, and one end of the waste gas incinerator is connected with a wet deacidification tower. Compared with the common spray drying and incineration, the operation cost of the wet sludge drying incineration can be effectively reduced, and the incineration heat energy utilization rate is improved by more than 10-20%.
Description
Technical Field
The utility model relates to the technical field of sludge treatment, in particular to energy-saving and efficient sludge drying and incinerating treatment equipment.
Background
Sludge incineration is developed gradually in China in recent years as the most effective sludge treatment mode for sludge reduction and harmlessness. The existing treatment process of sludge incineration comprises synergistic mixed incineration and independent incineration, wherein the synergistic incineration means that the sludge and coal or household garbage are sent into an incinerator for incineration together, and the independent incineration means that the sludge is independently incinerated. Because the water content of the sludge discharged from the water treatment plant is generally about 80%, the heat value is about-200 to 150Kcal/kg, and the heat value is very low, the sludge needs to be dried firstly during combustion, so that the heat value is improved, and the smooth operation of the incineration process is ensured. At present, the independent sludge incineration process at home and abroad is mainly divided into two types, one type is indirect drying and bubbling bed incineration, and the other type is spray drying and rotary kiln incineration.
The sludge spray drying and rotary kiln incineration technology is one of the mainstream sludge independent drying incineration technologies at present, in order to prevent sludge pyrolysis, the temperature of flue gas in contact with sludge in a sludge spray drying tower cannot exceed 600 ℃, the temperature is reduced by adopting a mixed cold air mode, the treatment load of equipment is increased, and the heat utilization rate of an incineration system is reduced due to the fact that a large amount of heat is taken away by flue gas emission. If the spray drying is improper in operation and control, a small amount of sludge can be pyrolyzed at high temperature in the sludge drying process, so that VOC in the sludge overflows, the standard of the VOC in the flue gas is not ensured, an ozone oxidation device is added in front of a tail gas treatment facility at the tail end of the existing treatment process, and the equipment operation cost and the one-time investment are both large. Therefore, the utility model provides an energy-saving and high-efficiency sludge drying and incinerating treatment device to solve the problems.
Disclosure of Invention
The utility model aims to provide energy-saving and high-efficiency sludge drying and incinerating treatment equipment to solve the problems in the background technology.
In order to achieve the purpose, the utility model provides the following technical scheme:
an energy-saving and efficient sludge drying and incinerating treatment device comprises a sludge storage tank, wherein one end of the sludge storage tank is connected with a sludge screw pump, one end of the sludge screw pump is connected with a drying and incinerating tower, the lower end of the drying and incinerating tower is connected with a rotary kiln, the rear end of the rotary kiln is provided with a fan, the right end of the drying and incinerating tower is connected with a cyclone dust collector, the upper end of the cyclone dust collector is connected with a dry deacidification tower, one end of the dry deacidification tower is connected with a bag-type dust collector, a combustion-supporting air preheater is arranged behind the bag-type dust collector, one end of the bag-type dust collector is connected with a waste gas incinerator, the upper part of the waste gas incinerator is provided with a burner, and one end of the waste gas incinerator is connected with a wet deacidification tower;
as a further scheme of the utility model: and the front end and the rear end of the rotary kiln are respectively provided with a burner.
As a still further scheme of the utility model: the waste gas incinerator is a heat accumulating type incinerator.
As a still further scheme of the utility model: the rotary kiln adopts a reverse burning furnace.
As a still further scheme of the utility model: and a burner is arranged at the lower part of the drying incineration tower.
Compared with the prior art, the utility model has the beneficial effects that:
1. compared with the common spray drying and incineration, the operation cost of the wet sludge drying incineration can be effectively reduced, and the incineration heat energy utilization rate is improved by more than 10-20%.
2. The utility model does not need to add ozone, adopts high-temperature oxidation technology, can reliably ensure the destruction rate of VOC and CO, and can reach 2g/Nm of combustible materials3Fuel does not need to be added, and the process flow is simplified.
3. The spray tower and the secondary combustion chamber are coupled into the drying incineration tower, so that the equipment is simplified, cold air mixing is avoided, the scale of the flue gas treatment equipment is reduced, and the occupied area is greatly reduced.
4. According to the utility model, the air supply coefficient of the rotary kiln is adjusted, the pyrolysis of sludge can be directly realized, the recycling of sludge can be realized according to requirements, and the tail gas VOC can reach the standard due to the arrangement of the waste gas incinerator at the rear end.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
In the figure: 1. a sludge storage tank; 2. a sludge screw pump; 3. a drying incineration tower; 4. a rotary kiln; 5. a fan; 6. a burner; 7. a cyclone dust collector; 8. a dry deacidification tower; 9. a bag-type dust collector; 10. an exhaust gas incinerator; 11. a wet deacidification tower.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, in the embodiment of the present invention, an energy-saving and efficient sludge drying and incinerating apparatus includes a sludge storage tank 1, one end of the sludge storage tank 1 is connected to a sludge screw pump 2, one end of the sludge screw pump 2 is connected to a drying and incinerating tower 3, the lower end of the drying and incinerating tower 3 is connected to a rotary kiln 4, the rotary kiln 4 is a reverse combustion furnace, two burners 6 are respectively disposed at the front end and the rear end of the rotary kiln 4, a blower 5 is disposed at the rear end of the rotary kiln 4, a burner 6 is disposed at the right end of the drying and incinerating tower 3, the right end of the drying and incinerating tower 3 is connected to a cyclone dust collector 7, the upper end of the cyclone dust collector 7 is connected to a dry deacidification tower 8, one end of the dry deacidification tower 8 is connected to a bag-type dust collector 9, a combustion-supporting air preheater is disposed behind the bag-type dust collector 9, one end of the bag-type dust collector 9 is connected to a waste gas incinerator 10, the waste gas incinerator 10 is a heat accumulating type incinerator, and the burner 6 is disposed at the upper portion of the waste gas incinerator 10, one end of the waste gas incinerator 10 is connected with a wet deacidification tower 11;
an energy-saving and high-efficiency sludge drying and incinerating treatment device comprises the following specific process steps;
(1) the sludge is sent to a drying incineration tower 3 through a sludge screw pump 2, is sprayed into the tower through a nozzle at the top of the tower and is in reverse contact with high-temperature flue gas in the tower, the primary drying dehydration process of the sludge is rapidly completed, the moisture content of the dried sludge is 20-40%, the dried sludge falls to a bottom of the tower and is conveyed to a grate or a scraper, and the sludge is sent to a rotary kiln 4 through the grate;
(2) the temperature in the rotary kiln 4 is controlled to be about 850 ℃ to ensure that the sludge is completely incinerated, and the temperature of the flue gas discharged by the drying and incinerating tower 3 is 140 ℃;
(3) the discharged flue gas enters a cyclone dust collector 7, most sludge particles are collected and then are sent back to the drying incineration tower 3 through an inclined chute;
(4) the flue gas discharged by the cyclone dust collector 7 enters a dry-method deacidification tower 8, and is fully mixed with lime powder and activated carbon powder sprayed from the top of the tower to remove dioxin and acid gas in the flue gas;
(5) the flue gas enters a combustion-supporting air preheater, the combustion-supporting air is preheated to more than 120 ℃ by utilizing the waste heat of the flue gas, the temperature of the flue gas is reduced to 70 ℃, the moisture in the flue gas is saturated, part of water vapor is condensed, and condensate is discharged from the bottom of the heat exchanger;
(6) the flue gas is pressurized by a fan 5 and sent into a waste gas incinerator 10, honeycomb heat storage ceramics are built at the bottom in a hearth, cold flue gas and the incinerated flue gas exchange heat through the heat storage ceramics, the temperature reaches 700 ℃, VOC in the waste gas in the upper hearth of the waste gas incinerator 10 is decomposed at the high temperature of 850 ℃, and the decomposition rate reaches 99% under the condition that the retention time is more than 1s, so that the VOC in the flue gas is ensured to reach the standard;
(7) high-temperature flue gas and low-temperature flue gas sequentially exchange heat through heat storage ceramics under the action of a steering valve at the lower part of the waste gas incinerator 10, the temperature of the high-temperature flue gas is 80-90 ℃ after the high-temperature flue gas exchanges heat through a heat storage body, and the flue gas enters the wet deacidification tower 11 for further acid gas removal.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (5)
1. An energy-saving and high-efficiency sludge drying and incinerating treatment device comprises a sludge storage tank (1), the drying and incinerating device is characterized in that one end of a sludge storage tank (1) is connected with a sludge screw pump (2), one end of the sludge screw pump (2) is connected with a drying and incinerating tower (3), the lower end of the drying and incinerating tower (3) is connected with a rotary kiln (4), the rear end of the rotary kiln (4) is provided with a fan (5), the right end of the drying and incinerating tower (3) is connected with a cyclone dust collector (7), the upper end of the cyclone dust collector (7) is connected with a dry deacidification tower (8), one end of the dry deacidification tower (8) is connected with a bag-type dust collector (9), a combustion-supporting air preheater is arranged behind the bag-type dust collector (9), one end of the bag-type dust collector (9) is connected with a waste gas incinerator (10), the upper part of the waste gas incinerator (10) is provided with a combustor (6), and one end of the waste gas incinerator (10) is connected with a wet deacidification tower (11).
2. The energy-saving and efficient sludge drying and incinerating treatment equipment as claimed in claim 1, wherein the front end and the rear end of the rotary kiln (4) are respectively provided with a burner (6).
3. The energy-saving and high-efficiency sludge drying and incinerating treatment device according to claim 1, wherein the waste gas incinerator (10) is a regenerative incinerator.
4. The energy-saving and efficient sludge drying and incinerating treatment equipment as claimed in claim 1, wherein the rotary kiln (4) adopts a reverse-burning furnace.
5. The energy-saving and high-efficiency sludge drying and incinerating treatment equipment according to claim 1, wherein a combustor (6) is arranged below the drying and incinerating tower (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121628137.3U CN215336353U (en) | 2021-07-18 | 2021-07-18 | Energy-conserving efficient sludge drying incineration disposal equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121628137.3U CN215336353U (en) | 2021-07-18 | 2021-07-18 | Energy-conserving efficient sludge drying incineration disposal equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215336353U true CN215336353U (en) | 2021-12-28 |
Family
ID=79568079
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121628137.3U Active CN215336353U (en) | 2021-07-18 | 2021-07-18 | Energy-conserving efficient sludge drying incineration disposal equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215336353U (en) |
-
2021
- 2021-07-18 CN CN202121628137.3U patent/CN215336353U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2019095964A1 (en) | Treatment method and device for cooperatively burning garbage and semi-dry sludge | |
| WO2009015575A1 (en) | Double-loop double-pyrogenation incinerator for garbage harmless treatment and its usage method | |
| CN104033905B (en) | System for combustible waste co-processing in cement kiln with bypass exhaust and waste heat power generation | |
| CN203980292U (en) | Cement kiln associated treatment combustible waste material system that can bypass cogeneration | |
| CN110068013B (en) | Sludge deep-dewatering drying incineration power generation system | |
| CN107269335B (en) | A kind of rubbish and combined cycle generation system of fuel gas-steam using combustion gas garbage drying | |
| CN101708939A (en) | Sludge drying incineration processing system utilizing system residual heat | |
| CN109945211A (en) | A kind of incineration treatment method and system of semicoke pyrolysis off-gas waste liquid | |
| CN104048297B (en) | Cement kiln cooperative processing combustible waste and by-pass exhaust power generation complementary system | |
| CN209229743U (en) | Refuse pyrolysis gasification furnace and refuse disposal system | |
| CN101476730A (en) | Energy-saving rubbish and dangerous waste incineration processing method | |
| CN102344259A (en) | Environmental-protection and energy-saving garbage incineration and waste gas utilization device | |
| CN206944167U (en) | The system for reducing waste incinerator discharged nitrous oxides | |
| CN101708940B (en) | Sludge drying incineration processing system utilizing gas and solid residual heat | |
| CN113357642A (en) | Energy-saving and efficient sludge drying and incineration treatment equipment and process | |
| CN210891654U (en) | System for thermal power plant's boiler flue gas pyrolysis rubbish | |
| CN203116031U (en) | System incinerating sludge through smoke waste heat of garbage-incinerating electricity generation | |
| CN215336353U (en) | Energy-conserving efficient sludge drying incineration disposal equipment | |
| CN108194929B (en) | A kind of low heat value wet stock self energizing drying and incinerating System and method for | |
| CN110964574A (en) | Organic hazardous waste disposal system and treatment method thereof | |
| CN111059540A (en) | Household garbage incineration power generation process | |
| CN214571448U (en) | Sludge pyrolysis treatment system based on multistage furnace | |
| CN203980293U (en) | A kind of cement kiln associated treatment combustible waste material and the power generation complemented system of bypass | |
| CN210891659U (en) | Dry pyrolysis incineration power generation system for municipal solid waste | |
| CN209944349U (en) | Sludge deep-dehydration and drying incineration power generation system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |