CN111102582A - Sludge furnace charging device - Google Patents
Sludge furnace charging device Download PDFInfo
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- CN111102582A CN111102582A CN201911358063.3A CN201911358063A CN111102582A CN 111102582 A CN111102582 A CN 111102582A CN 201911358063 A CN201911358063 A CN 201911358063A CN 111102582 A CN111102582 A CN 111102582A
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- sludge
- channel
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
- F23G7/001—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals for sludges or waste products from water treatment installations
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2205/00—Waste feed arrangements
- F23G2205/12—Waste feed arrangements using conveyors
- F23G2205/121—Screw conveyor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2205/00—Waste feed arrangements
- F23G2205/20—Waste feed arrangements using airblast or pneumatic feeding
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- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
Abstract
The invention discloses a sludge charging device, which comprises: the sludge pushing power device is used for receiving sludge and conveying the sludge to the incinerator through the sludge pushing channel; the reducing sludge discharging device is used for receiving the sludge output by the sludge pushing power device and increasing or reducing the passing capacity of the sludge entering the incinerator; the isolation pushing device is used for pushing the sludge discharged from the variable-diameter sludge discharging device into the incinerator; the auxiliary blockage dredging device is used for dredging a blocked channel; and the coordination control system is used for controlling the sludge pushing power device, the reducing sludge discharging device, the isolating pushing device and the blocking device to coordinate to feed the sludge into the incinerator. The invention sends the sludge after primary filter pressing into the boiler, so that the sludge is not dried, has no odor diffusion and no influence on the surrounding environment, and can be controlled to enter the boiler for incineration in real time.
Description
Technical Field
The invention relates to the technical field of sludge treatment, in particular to a sludge charging device.
Background
If the sludge generated after the industrial sewage treatment is incinerated by a boiler, the sludge is generally mixed with raw coal and enters the boiler along with the raw coal for incineration at present.
At present, large enterprises with self-contained power plants generally have industrial sewage treatment plants or boilers and sewage treatment matched with industrial areas, and industrial sludge with the water content of about 60 percent is mixed in raw coal through evaluation and is sent to a circulating fluidized bed boiler of the self-contained power plants for incineration. Because the sludge is sticky and has high water content, the channel of raw coal entering the furnace is influenced, the channel of raw coal entering the furnace is seriously influenced, a large amount of phenomena of coal breakage and coal blockage are caused, and the environmental protection emission data is greatly fluctuated while the operation and production of a factory are influenced; in order to ensure the environmental protection parameters of the smoke emission, the additive amount of the environmental protection treatment raw materials consumed at any time is large; and the sludge mixed raw coal enters the hearth for combustion, so that the limitation on the boiler type of the boiler is large, and the adaptability is poor.
The phenomena of a large amount of coal breakage and coal blockage are generated in the process of entering the incinerator, and the phenomena influence the production, so that economic loss and abnormal change of environment-friendly emission parameters of boiler flue gas are caused; and the system can be stopped, so that the major economic loss, the exceeding of the environmental-friendly emission parameters of the boiler smoke and even boiler safety accidents occur. The sludge mixed raw coal is burnt in a furnace, and the doping amount of the sludge mixed raw coal has higher requirement on the water content of the raw coal or the sludge. In order to increase the amount of raw coal doped into sludge, manufacturers dry the sludge. At this time, if the fruits are dried at low temperature, the production efficiency is very low. If the fruits are dried at high temperature: firstly, the energy utilization efficiency is low; secondly, due to peculiar smell and dust emission, environmental protection treatment facilities and corresponding operating cost need to be correspondingly increased; and thirdly, the tail gas is difficult to treat, secondary pollution is easy to generate, and the method is not environment-friendly. In the prior art, a furnace-entering incineration process adopting dilution pumping of sludge, water and the like is also adopted. The process has the following steps: firstly, the application range of pumping to the water content of the sludge is narrow; secondly, the water content is greatly increased by adopting a dilution method, the boiler is not economical to burn, and the coal consumption is increased; thirdly, the load capacity of the fan is increased; fourthly, the water content of the flue gas is large, the high-water-content flue gas with complex components has large corrosion to the equipment, and the maintenance cost of the boiler and the accessory equipment thereof is increased sharply. The industry generates a large amount of sludge every day, and the problem of the existing sludge incineration is urgently solved.
Disclosure of Invention
Aiming at the problems, the invention provides a sludge furnace entering device which mainly solves the problems of coal breakage and coal blockage caused by sludge entering a furnace and the problem of high energy consumption of a sludge dilution pump furnace entering method in the prior art.
The invention provides a sludge charging device, which comprises:
the sludge pushing power device is used for receiving sludge and conveying the sludge to the incinerator through the sludge pushing channel;
the reducing sludge discharging device is used for receiving the sludge output by the sludge pushing power device and increasing or reducing the passing capacity of the sludge entering the incinerator;
the isolation pushing device is used for pushing the sludge discharged from the variable-diameter sludge discharging device into the incinerator;
the auxiliary blockage dredging device is used for dredging a blocked channel;
and the coordination control system is used for controlling the sludge pushing power device, the reducing sludge discharging device, the isolating pushing device and the blocking device to coordinate to feed the sludge into the incinerator.
Furthermore, the sludge pushing power device is a screw conveyor, the screw conveyor is controlled by a motor to rotate, and a hopper for gathering sludge is fixedly installed at a feed inlet of the screw conveyor.
Furthermore, the diameter-variable sludge discharging device comprises at least one sludge discharging channel with an independent valve switch, and the coordinated control system controls the opening or closing of the sludge discharging channel; the sludge discharging channel penetrates through the sludge pushing channel and is communicated with the sludge pushing channel in an intersecting manner, and the sludge is conveyed from the sludge discharging channel on one side in the gravity direction.
Furthermore, the number of the sludge discharge channels is two, and the sludge discharge channels comprise a first discharge channel and a second discharge channel; the opening or closing of the first discharging channel is controlled by a first discharging valve; the opening or closing of the second discharging channel is controlled by a second discharging valve; the sludge discharging channel and the sludge pushing channel are cylindrical channels, and the axes of the sludge discharging channel and the sludge pushing channel are mutually vertical.
Further, the isolation pushing device is a wind power blowing system, and wind blows sludge into the incinerator; the isolation pushing device comprises a main pushing channel and an auxiliary pushing channel; the main pushing channel blows sludge conveyed from a sludge discharging channel on one side in the gravity direction into the incinerator, the auxiliary pushing channel is connected with one end of the sludge discharging channel without sludge output, and the auxiliary pushing channel is provided with an independent auxiliary pushing valve; the main pushing channel and the auxiliary pushing channel of the isolation pushing device and the sludge discharging channel of the reducing sludge discharging device are connected into a channel communicated with each other in a wind power circulation mode.
Further, the blockage removing device is a wind power blowing system and comprises a first blockage removing valve and a second blockage removing valve; the first blockage passing valve is connected with the main pushing channel and the blockage passing device and used for controlling the dredging of the main pushing channel; the second blocking valve is connected with the auxiliary pushing channel and the blocking device to control the dredging of the auxiliary pushing channel; a main detection pressure gauge is arranged on a pipeline between a main pushing channel and a sludge discharging channel of the isolation pushing device; an auxiliary detection pressure gauge is arranged on a pipeline between the auxiliary pushing channel and the sludge discharging channel.
Further, a flow guide part is fixed in a channel at one end of the sludge discharge channel connected with the auxiliary pushing channel through a support, the flow guide part is a table body or a cone, and the sludge blocked by the sludge discharge channel is dredged by the air conveyed by the auxiliary dredging device under the shunting action of the flow guide part.
Furthermore, the flow guide piece is a circular truncated cone or a pyramid or a frustum of a pyramid, and is fixed in the middle of the sludge discharge channel; the surface of the flow guide piece is smooth and is made of stainless steel.
The invention has the beneficial effects that:
1. the sludge charging device is externally hung; the sludge incinerator does not need to be newly built, and can be arranged at an inlet of the incinerator and matched with the existing incinerator for use, so that the existing resources are fully utilized, and the economic benefit is improved;
2. the sludge incinerated in the furnace only needs to be subjected to filter pressing, does not need to be dried, has no odor diffusion, and does not influence the surrounding environment. The sludge is subjected to harmless decrement and stabilization treatment, and the treatment process is safe and environment-friendly;
3. relative to the raw coal doped sludge incineration, the raw coal doped sludge enters a boiler hearth through an independent channel: the phenomena of coal breakage and coal blockage of a raw coal feeding channel due to viscosity and moisture of sludge are avoided, so that production and economy are not damaged; the treatment capacity is controllable in real time and is not influenced by the water content of raw coal or sludge;
4. carrying out drying treatment and re-incineration on sludge: no extra field, labor and energy consumption is needed; no tail gas emission in the drying process;
5. compared with the sludge charging process, the method adopts the processes of diluting and pumping sludge by adding water and the like: the sludge charging device has wider range capable of adapting to the water content of the sludge; water is not needed for dilution and pumping, so that the boiler is more economical to burn, raw coal is saved, the load of a fan is reduced, and electric power is saved; reduce the water content of the flue gas, reduce the corrosion of the flue gas containing water to equipment, and reduce the maintenance cost of the boiler and the accessory equipment thereof.
The invention sends the sludge after primary filter pressing into the boiler, so that the sludge is not dried, has no odor diffusion and no influence on the surrounding environment, and can be controlled to enter the boiler for incineration in real time. The method has the advantages of harmless reduction and stable treatment of the industrial sludge, and the treatment process ensures the production safety, makes full use of resources, improves the economic benefit, saves energy, reduces emission and protects the environment.
Drawings
FIG. 1 is a schematic diagram of a sludge charging device according to an embodiment of the present invention;
wherein: 1. a sludge pushing power device; 10. a motor; 2. a variable diameter sludge discharging device; 20. a first discharge valve; 21. a first discharge channel; 22. a second discharge valve; 23. a second discharge channel; 24. a flow guide member; 25. a support; 3. isolating the pushing device; 30. a main push channel; 31. an auxiliary push channel; 32. an auxiliary push valve; 4. an incinerator; 5. a funnel; 6. a blockage removing device; 60. a first plug valve; 61. a second block valve; 7. a main detection pressure gauge; 8. and (4) assisting in detecting the pressure gauge.
Detailed Description
In order to further understand the present invention, the following detailed description will be made with reference to the following examples, which are only used for explaining the present invention and are not to be construed as limiting the scope of the present invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted" and "connected" are to be interpreted broadly, e.g., as being either fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, so to speak, as communicating between the two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art. The technical solution of the present invention is further described below with reference to the accompanying drawings and examples.
According to the figure 1, the present embodiment provides a sludge charging device, which utilizes a sludge charging machine to connect a boiler, and treats sludge by environmental protection incineration, comprising:
the sludge pushing power device 1 is a spiral conveyor, the rotation of the spiral conveyor is controlled by a motor 10 or specifically a stepping motor, a feed inlet of the spiral conveyor is fixedly welded with a hopper 5 for gathering sludge, and the sludge falls into the spiral conveyor through the hopper 5; used for receiving the sludge and conveying the sludge to the incinerator 4 through the sludge pushing channel, the screw conveyer has the following advantages: firstly, the conveying amount of the sludge can be controlled; secondly, the sludge can be uniformly conveyed; thirdly, the sludge plays a role in sealing the spiral conveying pipeline, so that the flame in the incinerator 4 is prevented from being reversed, and the safety of the operating environment is ensured.
The variable-diameter sludge discharging device 2 is used for receiving the sludge output from the sludge pushing power device 1 and increasing or reducing the passing capacity of the sludge entering the incinerator; preferably, the diameter-variable sludge discharging device 2 comprises at least one sludge discharging channel with an independent valve switch, the coordinated control system controls the opening or closing of the sludge discharging channel, the sludge output quantity is controlled through the diameter-variable control of one inlet and two outlets or one inlet and multiple outlets, and the coordination and smoothness of the inlet and outlet of the sludge are adapted and ensured. Preferably, the number of the sludge discharge channels is two, and the sludge discharge channels comprise a first discharge channel 21 and a second discharge channel 23, and the opening or the closing of the first discharge channel 21 is controlled by a first discharge valve 20; the opening or closing of the second discharge channel 23 is controlled by a second discharge valve 22; the sludge discharging channel and the sludge pushing channel of the screw conveyor are cylindrical channels, the sludge discharging channel penetrates through the sludge pushing channel to be intersected and communicated, the axes of the sludge discharging channel and the sludge pushing channel are mutually vertical, sludge is conveyed from the sludge discharging channel on one side in the gravity direction, the first discharging valve 20 is opened, and the sludge is output from the first discharging channel 21; when the amount of the sludge output by the screw conveyor is increased, the second discharge valve 22 is selectively opened to increase the aperture through which the sludge passes, and the sludge is simultaneously output from the first discharge channel 21 and the second discharge channel 23 to increase the throughput of the sludge, so that the sludge does not block the channels.
The isolation pushing device 3 is used for pushing the sludge from the reducing sludge discharging device 2 into the incinerator 4; preferably, the isolation pushing device 3 is a wind blowing system, and wind blows sludge into the incinerator 4; the isolation pushing device 3 comprises a main pushing channel 30 and an auxiliary pushing channel 31; the main pushing channel 30 blows sludge conveyed from the sludge discharging channel on one side of the gravity direction into the incinerator 4, strong wind power is used for blowing the sludge into the incinerator 4, shaking is not needed, pushing back and forth is not needed, and the sludge can be continuously pushed. The auxiliary pushing channel 31 is connected with one end of the sludge discharging channel without sludge output, the auxiliary pushing channel 31 is provided with an independent auxiliary pushing valve 32, and the auxiliary pushing valve 32 is in a normally open state; the main pushing channel 30 and the auxiliary pushing channel 31 of the isolation pushing device 3 and the sludge discharging channel of the reducing sludge discharging device 2 are connected into a channel communicated with each other in a wind power circulation manner, so that the pressure balance in the pipeline is ensured, and the sludge is smoothly output from the sludge discharging channel and pushed into the incinerator 4.
The blockage removing device 6 is a wind power blowing system, and the wind pressure value is larger than the wind pressure value output by the isolation pushing device 3; comprises a first through blocking valve 60 and a second through blocking valve 61; the through-blocking valve is in a normally closed state and is opened when in use; the first blockage removing valve 60 is connected with the main pushing channel 30 and the blockage removing device 6 and controls the main pushing channel 30 to be removed; the second dredging valve 61 is connected with the auxiliary pushing channel 31 and the dredging device 6 and controls the dredging of the auxiliary pushing channel 31; a main detection pressure gauge 7 is arranged on a pipeline between the main pushing channel 30 of the isolation pushing device 3 and the sludge discharging channel; an auxiliary detection pressure gauge 8 is arranged on a pipeline between the auxiliary pushing channel 31 and the sludge discharging channel.
Preferably, the flow guide member 24 is fixed in the channel at one end of the sludge discharge channel connected to the auxiliary pushing channel 31, the flow guide member 24 is a table or a cone, and the pressure wind dredges the sludge blocked by the sludge discharge channel under the shunting action of the flow guide member 24, and it is found through practice that when wind blows directly from the middle of the channel, the middle of the blocked sludge is blown out a large hole, but the sludge attached to the wall of the pipeline does not fall off, and the blocked sludge cannot be dredged completely, the flow guide member 24 in this embodiment is specifically a circular table, a cone, a pyramid or a prismoid, the flow guide member 24 is fixed in the middle of the sludge discharge channel through the bracket 25, the pressure wind delivered from the dredging device 6 directly acts on the surface of the flow guide member 24, changes the direction of the wind speed, and blows to the wall of the pipeline, so that the sludge attached to the wall of the pipeline is blown down, and then the sludge in the middle part can be dredged. Preferably, the surface of the flow guide member 24 is smooth, and the material is stainless steel, so as to reduce the occurrence of corrosion.
Specifically, the working principle of the blockage removing device 6 is as follows: when the pressure value detected by the main detection pressure gauge 7 is greater than the preset pressure value, namely the main pushing channel 30 is blocked, the wind power of the isolation pushing device 3 cannot send the sludge into the incinerator, at the moment, the auxiliary pushing valve 32 is closed, the first blocking valve 60 is opened, the pressure wind of the blocking device 6 blows to the main pushing channel 30, and the blocked sludge is dredged; when the pressure value that supplementary detection pressure gauge 8 detected is greater than predetermined pressure value, also the reducing mud discharging device 2 appears blockking up, and mud can't be followed mud discharging channel and exported, at this moment, closes supplementary push valve 32, opens second and leads to stifled valve 61, leads to on stifled device 6's pressure wind blows the passageway that is fixed with water conservancy diversion piece 24 to mud discharging channel, and pressure wind is used in water conservancy diversion piece 24, blows off mud, and then dredge the pipeline.
And the coordination control system is used for controlling the sludge pushing power device 1, the reducing sludge discharging device 2, the isolation pushing device 3 and the blocking device 6 to coordinate to feed the sludge into the incinerator.
Specifically, the power source of the sludge pushing power device 1 is a hydraulic motor 10 or a motor, and the coordinated control system controls the rotating speed of the motor 10 so as to control the sludge conveying speed of the sludge pushing power device 1; the coordinated control system controls the reducing sludge discharging device 2 to adaptively increase the aperture through which the sludge passes, namely, a discharging switch of a sludge discharging channel is opened, so that the sludge is conveyed to the incinerator 4 from different apertures; the control system controls a main switch for isolating the wind power blowing of the pushing device 3 and the starting or closing of the auxiliary pushing valve 32; the control system also controls the starting of the blockage removing device 6, and the starting of a blockage removing valve of the blockage removing device 6 is controlled through data fed back by the pressure gauge.
The sludge feeding device is externally hung on a proper boiler, sludge generated after environmental protection treatment enters the incinerator through the sludge feeding device after preliminary filter pressing and environmental evaluation, the sludge produced by the sludge feeding device is incinerated, the transportation cost is reduced, secondary pollution in the transportation process is avoided, and the sludge is sent to a circulating fluidized bed boiler of a factory for incineration by using an internal conveying system for harmless treatment; the phenomena of coal breakage and coal blockage are greatly reduced, the environment-friendly smoke emission parameters are stable, the environment-friendly treatment raw materials of smoke are reduced, the electricity is saved, and a virtuous cycle is formed.
The above-described embodiments are merely illustrative of the embodiments of the present invention, and do not limit the spirit and scope of the present invention. Various modifications and improvements of the technical solutions of the present invention may be made by those skilled in the art without departing from the design concept of the present invention, and all of them should fall into the protection scope of the present invention.
Claims (8)
1. A sludge furnace charging device is characterized by comprising:
the sludge pushing power device is used for receiving sludge and conveying the sludge to the incinerator through the sludge pushing channel;
the reducing sludge discharging device is used for receiving the sludge output by the sludge pushing power device and increasing or reducing the passing capacity of the sludge entering the incinerator;
the isolation pushing device is used for pushing the sludge discharged from the variable-diameter sludge discharging device into the incinerator;
the auxiliary blockage dredging device is used for dredging a blocked channel;
and the coordination control system is used for controlling the sludge pushing power device, the reducing sludge discharging device, the isolating pushing device and the blocking device to coordinate to feed the sludge into the incinerator.
2. The sludge furnace entering device according to claim 1, wherein the sludge pushing power device is a screw conveyor, the screw conveyor is controlled by a motor to rotate, and a hopper for gathering sludge is fixedly arranged at a feed inlet of the screw conveyor.
3. The sludge charging device as claimed in claim 1, wherein the diameter-variable sludge discharging device comprises at least one sludge discharging channel with an independent valve switch, and a coordinated control system controls the opening or closing of the sludge discharging channel; the sludge discharging channel penetrates through the sludge pushing channel and is communicated with the sludge pushing channel in an intersecting manner, and the sludge is conveyed from the sludge discharging channel on one side in the gravity direction.
4. The sludge charging device as claimed in claim 3, wherein the number of the sludge discharging channels is two, including a first discharging channel and a second discharging channel; the opening or closing of the first discharging channel is controlled by a first discharging valve; the opening or closing of the second discharging channel is controlled by a second discharging valve; the sludge discharging channel and the sludge pushing channel are cylindrical channels, and the axes of the sludge discharging channel and the sludge pushing channel are mutually vertical.
5. The sludge stoker apparatus of claim 3 wherein the isolated pushing means is a wind blowing system, wind blowing sludge into the incinerator; the isolation pushing device comprises a main pushing channel and an auxiliary pushing channel; the main pushing channel blows sludge conveyed from a sludge discharging channel on one side in the gravity direction into the incinerator, the auxiliary pushing channel is connected with one end of the sludge discharging channel without sludge output, and the auxiliary pushing channel is provided with an independent auxiliary pushing valve; the main pushing channel and the auxiliary pushing channel of the isolation pushing device and the sludge discharging channel of the reducing sludge discharging device are connected into a channel communicated with each other in a wind power circulation mode.
6. The sludge furnace entering device according to claim 5, wherein the blocking device is a wind blowing system and comprises a first blocking valve and a second blocking valve; the first blockage passing valve is connected with the main pushing channel and the blockage passing device and used for controlling the dredging of the main pushing channel; the second blocking valve is connected with the auxiliary pushing channel and the blocking device to control the dredging of the auxiliary pushing channel; a main detection pressure gauge is arranged on a pipeline between a main pushing channel and a sludge discharging channel of the isolation pushing device; an auxiliary detection pressure gauge is arranged on a pipeline between the auxiliary pushing channel and the sludge discharging channel.
7. The sludge charging device as claimed in any one of claims 1 to 6, wherein a flow guide member is fixed in a channel at one end of the sludge discharging channel connected with the auxiliary pushing channel through a bracket, the flow guide member is a table body or a cone, and the wind conveyed by the auxiliary dredging device is used for dredging the sludge blocked by the sludge discharging channel under the shunting action of the flow guide member.
8. The sludge charging device as claimed in claim 7, wherein the diversion member is a circular truncated cone or a pyramid or a frustum of pyramid, and the diversion member is fixed in the middle of the sludge discharge channel; the surface of the flow guide piece is smooth and is made of stainless steel.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911358063.3A CN111102582A (en) | 2019-12-25 | 2019-12-25 | Sludge furnace charging device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911358063.3A CN111102582A (en) | 2019-12-25 | 2019-12-25 | Sludge furnace charging device |
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| CN111102582A true CN111102582A (en) | 2020-05-05 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113357644A (en) * | 2021-06-15 | 2021-09-07 | 神铄环保科技(镇江)有限公司 | Feeding device for fluidized bed household garbage incinerator and using method thereof |
-
2019
- 2019-12-25 CN CN201911358063.3A patent/CN111102582A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113357644A (en) * | 2021-06-15 | 2021-09-07 | 神铄环保科技(镇江)有限公司 | Feeding device for fluidized bed household garbage incinerator and using method thereof |
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